Toolkit/channelrhodopsin-2
channelrhodopsin-2
Also known as: channelrhodopsin-2, Channelrhodopsin-2, Channelrhodopsin2, channelrhodopsin-2 (ChR2), Channelrhodopsin-2 (ChR2), channelrhodopsin protein ChR2, ChR2, FLEX-ChR2, highly light-sensitive channelrhodopsin-2 mutant, optogenetic seizure-like afterdischarge model
Taxonomy: Mechanism Branch / Architecture. Workflows sit above the mechanism and technique branches rather than replacing them.
Summary
Channelrhodopsin-2 (ChR2) is a light-activated ion channel used as an optogenetic switch to depolarize membranes and activate electrically excitable cells. The supplied evidence also indicates that light-activated ChR2 can modulate CaV1.3 calcium channel activity.
Usefulness & Problems
Why this is useful
ChR2 is useful for optical control of membrane voltage in excitable cells, enabling noninvasive activation with light rather than direct electrical stimulation. The evidence places it as a prominent optogenetic actuator and as one of the classical mechanisms for optical cell activation.
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We summarize the recent results of work in the field to control plant growth and cellular motion via green light-gated ion channels
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present successful applications to light-control gene expression with single or combined photoswitches in plants
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Light can be turned on or off, and adjusting its intensity and duration allows optogenetic fine-tuning of cellular processes in a noninvasive and spatiotemporally resolved manner.
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the C128T mutant, which has a markedly increased open-state lifetime
Problem solved
ChR2 helps solve the problem of triggering membrane depolarization and activation of electrically excitable cells with precise light input. The evidence further suggests utility for coupling light stimulation to downstream voltage-dependent processes such as CaV1.3 channel modulation.
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We summarize the recent results of work in the field to control plant growth and cellular motion via green light-gated ion channels
Source:
present successful applications to light-control gene expression with single or combined photoswitches in plants
Source:
The combination of ChR2 with hyperpolarizing-light-driven ion pumps such as the Cl(-) pump halorhodopsin (NpHR) enables multimodal remote control of neuronal cells in culture, tissue, and living animals.
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we sought to determine if this optical modulation can be obtained also in a miniaturized format, such as a 384-well plate, using the instrumentations normally dedicated to fluorescence analysis in High Throughput Screening (HTS) activities, such as for example the FLIPR (Fluorometric Imaging Plate Reader) instrument
Published Workflows
Objective: Validate common viral serotypes for identifying and analyzing Sp5C projection neurons that project to the parabrachial nucleus and demonstrate selective genetic access to this population.
Why it works: The workflow uses injections into the projection target, the parabrachial nucleus, so neurons projecting there can be retrogradely labeled and then assessed for labeling pattern and transduction utility. A subsequent Cre-dependent recombination demonstration tests whether the labeled projection class can be selectively accessed for future functional studies.
Stages
- 1.Retrograde viral labeling of PBN-projecting Sp5C neurons(broad_screen)
This stage tests whether the two viral serotypes can identify and label Sp5C neurons that project to the parabrachial nucleus.
Selection: Ability of rgAAV or AAV9 injected into the PBN to retrogradely label Sp5C projection neurons.
- 2.Comparative characterization of labeling pattern(secondary_characterization)
This stage characterizes how labeling is distributed and whether performance differs by serotype, region, or age.
Selection: Bilateral versus ipsilateral-biased labeling, superficial versus deep Sp5C labeling, and age dependence of retrograde labeling.
- 3.Selective Cre-dependent effector expression in labeled projection neurons(confirmatory_validation)
This stage confirms that the projection-neuron population can be selectively targeted with a functional effector after viral labeling logic is established.
Selection: Successful Cre-dependent recombination to selectively express channelrhodopsin-2 in Sp5C projection neurons.
Steps
- 1.Inject rgAAV or AAV9 unilaterally into the parabrachial nucleusretrograde viral labeling vectors
Target the projection field so Sp5C neurons projecting to the PBN can be retrogradely labeled.
Injection into the target region is required before labeled projection neurons can be identified and compared.
- 2.Assess labeling distribution and compare serotype and age effectsvectors being compared
Determine whether labeling is bilateral or ipsilateral-biased, whether superficial and deep Sp5C are similarly labeled, and whether labeling depends on age at injection.
Characterization follows labeling so the utility and context dependence of each serotype can be evaluated before claiming suitability for future studies.
- 3.Demonstrate Cre-dependent recombination for selective channelrhodopsin-2 expression in Sp5C projection neuronsselectively expressed effector
Confirm that the projection-neuron population can be selectively targeted for future functional studies.
Selective effector expression is tested after establishing that the projection-neuron population can be robustly labeled and analyzed.
Objective: Develop an all-optical cardiac electrophysiology approach that simultaneously monitors transmembrane potential and cytosolic calcium while enabling optogenetic manipulation with minimal optical crosstalk.
Why it works: The abstract states that spectral congestion causes crosstalk, and that the reported approach minimizes this by exploiting the isosbestic point of ElectroFluor 730p while avoiding the ChR2 activation spectrum.
Objective: Implement cardiac optogenetic experiments by selecting an appropriate opsin class, establishing expression in the target cardiac system, delivering light effectively, and measuring physiological or optical responses.
Why it works: The review links tool performance first to opsin biophysical properties, then to successful expression in the cardiac target, then to practical light delivery, and finally to physiological or optical readout. This ordering reflects that optical control requires both a suitable actuator and a feasible delivery-and-measurement setup.
Stages
- 1.Select optogenetic actuator class and spectral properties(library_design)
The abstract explicitly states that opsin biophysical properties determine whether stimulation or silencing will be reliable and precise, and that spectral shifts can improve penetration and combinatorial use.
Selection: Choose among depolarizing, hyperpolarizing, GPCR-signaling, and spectrally shifted optogenetic tools based on biophysical properties needed for reliable and precise stimulation or silencing.
- 2.Establish expression in the cardiac target(library_build)
The review states that expression of the chosen optogenetic tool is required before optical control can be attempted in cardiac cells or whole systems.
Selection: Introduce opsin-encoding genes by viral transduction or use spark-cell coupling at single-cell level; at system level use transgenic mice or in vivo adenoviral injection.
- 3.Deliver light to the preparation(functional_characterization)
Even with a suitable opsin and expression strategy, optical control depends on practical light delivery to the cardiac tissue.
Selection: Use laser or LED illumination with widespread or multipoint delivery appropriate to the preparation.
- 4.Measure physiological or optical responses(confirmatory_validation)
The abstract presents these readouts as the means to confirm and monitor the effects of cardiac optogenetic stimulation.
Selection: Assess responses using patch clamp, multi-unit microarray recordings, Langendorff heart electrical recordings, or optical reporters including small detecting molecules and genetically encoded sensors.
Objective: Develop and demonstrate a wireless, battery-free, fully implantable pacemaker platform for small animal models that supports multimodal and multisite cardiac stimulation.
Why it works: The platform combines wireless energy harvesting and digital communication electronics with implanted stimulation interfaces, enabling battery-free pacing while supporting both electrical and optical modalities.
Objective: Restore light responsiveness in degenerated retina while using stimulation intensities compatible with retinal safety and assess translatability across mouse, macaque, and human retinal systems.
Why it works: The abstract states that blue-light activation of ChR2 exceeds retinal safety thresholds, whereas red-shifted light has much lower damage potential. The workflow therefore uses a red-shifted channelrhodopsin and tests function in progressively more translational retinal systems.
Stages
- 1.Actuator and delivery choice based on retinal safety rationale(decision_gate)
This stage exists to choose an optogenetic strategy compatible with retinal safety constraints before testing restoration.
Selection: Prefer a red-shifted channelrhodopsin over ChR2 because blue-light activation of ChR2 exceeds retinal safety thresholds and red-shifted light has lower damage potential.
- 2.Blind mouse functional restoration testing(confirmatory_validation)
This stage establishes proof of functional restoration in a blind animal model.
Selection: Test whether AAV-delivered ReaChR restores light responses in blind rd1 mice at retinal, cortical, and behavioral levels under orange light below the human retinal safety threshold.
- 3.Macaque retina translatability testing(confirmatory_validation)
This stage extends the findings from mouse to primate retinal tissue.
Selection: Test whether AAV-ReaChR can evoke spike trains in postmortem macaque retina at safe orange-light intensities.
- 4.Human retina translatability testing(confirmatory_validation)
This stage directly addresses translatability to human subjects.
Selection: Directly test translatability to human subjects by measuring optogenetic spike responses in ganglion cells of postmortem human retina after AAV- or lentivirus-mediated delivery.
Objective: Test whether selective optogenetic activation of VTA dopamine neurons is sufficient to induce arousal and reanimation from an anesthetized unconscious state.
Why it works: The workflow combines cell-type-targeted ChR2 expression in DAT-cre mice with optical VTA stimulation to test causal sufficiency, then uses a no-ChR2 control and D1 receptor antagonist pretreatment to distinguish opsin-dependent and receptor-dependent effects.
Optogenetic defibrillation terminates ventricular arrhythmia in mouse hearts and human simulations
2016Objective: Test whether optogenetic defibrillation using cardiac ChR2 expression can terminate ventricular arrhythmias in mouse hearts and assess translational feasibility in human heart simulations.
Why it works: The workflow combines optical actuation in ChR2-expressing cardiac tissue with mechanistic and simulation analyses because illumination-induced transmural depolarization is proposed to block Na+ channel availability and interrupt arrhythmia wavefront propagation.
Objective: Control seizure activity using optogenetic interventions selected by target cell type, circuit location, and intervention timing.
Why it works: The supplied evidence indicates that seizure-control strategies are organized across focal targets, cell types, and closed-loop paradigms, implying that intervention efficacy depends on matching optical control mode and timing to the relevant seizure network.
Objective: Characterize optogenetic stimulation of spiral ganglion neurons as a strategy to activate the auditory pathway and improve frequency resolution relative to electrical cochlear stimulation in rodents.
Why it works: The abstract states that optical stimulation can be spatially confined, which may improve frequency resolution compared with electrical stimulation that suffers from broad current spread within the cochlea.
Stages
- 1.Initial functional characterization of optogenetic SGN stimulation(functional_characterization)
This stage establishes that light stimulation of ChR2-expressing SGNs can drive auditory pathway responses before broader translational comparisons.
Selection: Ability of optogenetic stimulation of SGNs to activate the auditory pathway as measured by single-neuron and population recordings.
- 2.Validation in deaf mice(confirmatory_validation)
This stage tests whether the optogenetic strategy remains effective in a deaf condition relevant to hearing restoration.
Selection: Restoration of auditory activity in a deaf mouse model.
- 3.Comparative spatial spread and frequency-resolution assessment(secondary_characterization)
This stage compares optical stimulation against electrical stimulation to test the proposed advantage of spatial confinement and improved frequency resolution.
Selection: Approximation of spatial spread of cochlear excitation using inferior colliculus LFP recordings under optical, acoustic, and electrical stimulation.
- 4.Opsin sensitivity optimization by virus-mediated variant expression(functional_characterization)
This stage improves the optogenetic actuator to lower required light and increase usable stimulation frequency.
Selection: Reduced light requirement and support for neuronal spiking up to 60 Hz after expression of a more light-sensitive ChR2 variant in SGNs.
Objective: Develop and apply an in vivo optogenetic seizure-like afterdischarge model to investigate directional network dynamics along the septo-temporal axis of hippocampus.
Why it works: The workflow combines controlled optical induction of afterdischarges with simultaneous electrophysiological recording and downstream network analysis, allowing seizure-like events to be reproducibly evoked and directionality along the hippocampal septo-temporal axis to be measured.
Stages
- 1.Establish ChR2 expression platform for hippocampal photostimulation(library_build)
This stage provides the optogenetic actuator needed for seizure-like afterdischarge induction.
Selection: Use either W-TChR2V4 transgenic rats or wild-type rats transfected with AAV vectors carrying ChR2 to enable hippocampal photostimulation.
- 2.Photostimulation-based induction of seizure-like afterdischarges(broad_screen)
This stage establishes the in vivo seizure-like afterdischarge model and identifies effective stimulation parameters.
Selection: Apply repetitive pulse photostimulation and identify conditions that induce seizure-like afterdischarges.
- 3.Secondary characterization of induction parameters and activation extent(secondary_characterization)
This stage refines the induction conditions and confirms that the induced event engages the hippocampal network broadly enough for downstream network-dynamics analysis.
Selection: Characterize optimal pulse frequency and duty ratio and confirm neuronal activation across the hippocampus by c-Fos staining.
- 4.Functional characterization of septo-temporal network dynamics(functional_characterization)
This stage extracts the main mechanistic insight about longitudinal hippocampal network dynamics during seizure initiation and termination.
Selection: Record LFPs along the septo-temporal axis and analyze causality and coherence during seizure-like afterdischarges.
Steps
- 1.Obtain hippocampal ChR2 expression in rodentsdelivery route for optogenetic actuator expression
Enable optical activation of hippocampal neurons for seizure-like afterdischarge induction.
ChR2 expression is required before photostimulation can be used to induce afterdischarges.
- 2.Apply repetitive pulse photostimulation while recording LFPsinduced seizure model
Induce seizure-like afterdischarges and observe them electrophysiologically.
After ChR2 expression is established, photostimulation is used to test whether the model can reliably evoke afterdischarges.
- 3.Identify effective stimulation parameters and confirm whole-hippocampus activation by c-Fos staininginduced seizure model under characterization
Determine optimal induction settings and verify that the induced event activates the hippocampal network broadly.
Parameter optimization and activation confirmation strengthen interpretation before detailed network-dynamics analysis.
- 4.Analyze septo-temporal LFP recordings with Granger causality and state-space methodsnetwork-analysis method
Infer directional signal flow and identify dynamical states during seizure-like afterdischarges.
This analysis depends on having induced afterdischarges and recorded LFPs along the septo-temporal axis.
Objective: Probe how matrix thalamic inputs influence layer 1 circuits in mouse prefrontal cortex and test whether matrix thalamocortical systems share or differ from established core sensory thalamocortical synaptic and circuit mechanisms.
Why it works: Expressing Channelrhodopsin-2 in matrix thalamic neurons allows optical activation of their L1-projecting axons, while in vitro electrophysiology reads out synaptic and circuit responses in prefrontal cortex.
Objective: Test whether transient optogenetic activation of genetically targeted VTA dopamine neurons is sufficient to act as a reward signal and reinforce behavior.
Why it works: The study uses ChR2-mediated optical stimulation to reproduce the brief approximately 200 ms activation pattern associated with natural reward events, allowing direct causal testing of whether that transient is sufficient for reinforcement.
Taxonomy & Function
Primary hierarchy
Mechanism Branch
Architecture: A composed arrangement of multiple parts that instantiates one or more mechanisms.
Mechanisms
light-gated ion conductionmembrane depolarizationmodulation of cav1.3 calcium channel activityTechniques
No technique tags yet.
Target processes
recombinationsignalingInput: Light
Implementation Constraints
The evidence supports heterologous expression as an implementation approach and indicates that retinal availability can be a practical issue in plant systems. Beyond these points, the supplied material does not provide construct architecture, promoter choices, trafficking elements, or delivery details.
The provided evidence does not report quantitative performance metrics such as conductance, kinetics, spectral peak, or photocurrent amplitude for this specific profile. A cited plant optogenetics review notes that dependence on light and absence of retinal were barriers in plants, indicating practical constraints for some biological contexts.
Validation
Observations
Inferred from claim c4 during normalization. A combination of ElectroFluor 730p, X-Rhod-1, and ChR2 in mouse hearts enables simultaneous monitoring of transmembrane potential and cytosolic calcium while performing optogenetic manipulation with minimal crosstalk. Derived from claim c4. Quoted text: We here present a novel approach to simultaneously monitor transmembrane potential and cytosolic calcium, while also performing optogenetic manipulation. For this, we used the novel voltage-sensitive dye ElectroFluor 730p and the cytosolic calcium indicator X-Rhod-1 in mouse hearts expressing channelrhodopsin-2 (ChR2). By exploiting the isosbestic point of ElectroFluor 730p and avoiding the ChR2 activation spectrum, we here introduce a novel optical imaging and manipulation approach with minimal crosstalk.
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behavioral and EEG
Inferred from claim c1 during normalization. Selective optogenetic activation of VTA dopamine neurons is sufficient to induce arousal from an anesthetized unconscious state during steady-state isoflurane anesthesia. Derived from claim c1.
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Inferred from claim c2 during normalization. Optogenetic stimulation of spiral ganglion neurons restored auditory activity in deaf mice. Derived from claim c2. Quoted text: Furthermore, optogenetic stimulation of SGNs restored auditory activity in deaf mice.
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operant reinforcement
Inferred from claim c2 during normalization. A single 200 ms light pulse delivered after each self-initiated nose poke was sufficient to cause operant reinforcement. Derived from claim c2. Quoted text: When a single light pulse followed each self-initiated nose poke, it was sufficient in itself to cause operant reinforcement.
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locomotor behavior
Inferred from claim c3 during normalization. Optical stimulation of genetically targeted VTA dopamine neurons increased locomotion and contralateral rotations when delivered according to a predetermined pattern in separate sessions. Derived from claim c3. Quoted text: when optical stimulation was delivered in separate sessions according to a predetermined pattern, it increased locomotion and contralateral rotations
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Supporting Sources
Ranked Claims
Retrograde labeling of Sp5C projection neurons was greater when injections were made in young adult animals.
A key milestone described by the review is partial vision restoration in a human patient using ChrimsonR with light-amplifying goggles.
Within Sp5C, rgAAV and AAV9 produced similar levels of projection-neuron labeling in superficial and deep regions.
Red-shifted opsins including ReaChR and ChrimsonR reduce phototoxicity by enabling activation under longer wavelengths.
For both serotypes, labeled Sp5C projection neurons were found bilaterally with a strong ipsilateral bias.
Cre-dependent recombination successfully enabled selective channelrhodopsin-2 expression in Sp5C projection neurons.
rgAAV and AAV9 produce strong Sp5C projection-neuron transduction and provide a basis for future study of Sp5C projection-neuron afferent and efferent functions.
Following unilateral PBN injections, both rgAAV and AAV9 retrogradely labeled many Sp5C projection neurons.
Chronos provides superior temporal kinetics for dynamic visual tracking.
MCO1 optimized opsin performance under ambient light, helping bridge optogenetic vision restoration toward real-world applications.
rgAAV and AAV9 were evaluated as viral serotypes for identifying and analyzing Sp5C projection neurons that project to the parabrachial nucleus.
Plant dependence on light and the absence of retinal were barriers to establishing plant optogenetics until recent progress overcame these difficulties.
For a long time, the dependence of plant growth on light and the absence of retinal, the rhodopsin chromophore, prevented the establishment of plant optogenetics until recent progress overcame these difficulties.
Plant dependence on light and the absence of retinal were barriers to establishing plant optogenetics until recent progress overcame these difficulties.
For a long time, the dependence of plant growth on light and the absence of retinal, the rhodopsin chromophore, prevented the establishment of plant optogenetics until recent progress overcame these difficulties.
Plant dependence on light and the absence of retinal were barriers to establishing plant optogenetics until recent progress overcame these difficulties.
For a long time, the dependence of plant growth on light and the absence of retinal, the rhodopsin chromophore, prevented the establishment of plant optogenetics until recent progress overcame these difficulties.
Plant dependence on light and the absence of retinal were barriers to establishing plant optogenetics until recent progress overcame these difficulties.
For a long time, the dependence of plant growth on light and the absence of retinal, the rhodopsin chromophore, prevented the establishment of plant optogenetics until recent progress overcame these difficulties.
Plant dependence on light and the absence of retinal were barriers to establishing plant optogenetics until recent progress overcame these difficulties.
For a long time, the dependence of plant growth on light and the absence of retinal, the rhodopsin chromophore, prevented the establishment of plant optogenetics until recent progress overcame these difficulties.
Plant dependence on light and the absence of retinal were barriers to establishing plant optogenetics until recent progress overcame these difficulties.
For a long time, the dependence of plant growth on light and the absence of retinal, the rhodopsin chromophore, prevented the establishment of plant optogenetics until recent progress overcame these difficulties.
Plant dependence on light and the absence of retinal were barriers to establishing plant optogenetics until recent progress overcame these difficulties.
For a long time, the dependence of plant growth on light and the absence of retinal, the rhodopsin chromophore, prevented the establishment of plant optogenetics until recent progress overcame these difficulties.
A combination of ElectroFluor 730p, X-Rhod-1, and ChR2 in mouse hearts enables simultaneous monitoring of transmembrane potential and cytosolic calcium while performing optogenetic manipulation with minimal crosstalk.
We here present a novel approach to simultaneously monitor transmembrane potential and cytosolic calcium, while also performing optogenetic manipulation. For this, we used the novel voltage-sensitive dye ElectroFluor 730p and the cytosolic calcium indicator X-Rhod-1 in mouse hearts expressing channelrhodopsin-2 (ChR2). By exploiting the isosbestic point of ElectroFluor 730p and avoiding the ChR2 activation spectrum, we here introduce a novel optical imaging and manipulation approach with minimal crosstalk.
Recent work has used green light-gated ion channels to control plant growth and cellular motion.
We summarize the recent results of work in the field to control plant growth and cellular motion via green light-gated ion channels
Recent work has used green light-gated ion channels to control plant growth and cellular motion.
We summarize the recent results of work in the field to control plant growth and cellular motion via green light-gated ion channels
Recent work has used green light-gated ion channels to control plant growth and cellular motion.
We summarize the recent results of work in the field to control plant growth and cellular motion via green light-gated ion channels
Recent work has used green light-gated ion channels to control plant growth and cellular motion.
We summarize the recent results of work in the field to control plant growth and cellular motion via green light-gated ion channels
Recent work has used green light-gated ion channels to control plant growth and cellular motion.
We summarize the recent results of work in the field to control plant growth and cellular motion via green light-gated ion channels
Recent work has used green light-gated ion channels to control plant growth and cellular motion.
We summarize the recent results of work in the field to control plant growth and cellular motion via green light-gated ion channels
Recent work has used green light-gated ion channels to control plant growth and cellular motion.
We summarize the recent results of work in the field to control plant growth and cellular motion via green light-gated ion channels
Single or combined photoswitches have been successfully applied for light-controlled gene expression in plants.
present successful applications to light-control gene expression with single or combined photoswitches in plants
Light input can be switched on or off and tuned in intensity and duration to provide noninvasive, spatiotemporally resolved control of cellular processes.
Light can be turned on or off, and adjusting its intensity and duration allows optogenetic fine-tuning of cellular processes in a noninvasive and spatiotemporally resolved manner.
Light input can be switched on or off and tuned in intensity and duration to provide noninvasive, spatiotemporally resolved control of cellular processes.
Light can be turned on or off, and adjusting its intensity and duration allows optogenetic fine-tuning of cellular processes in a noninvasive and spatiotemporally resolved manner.
Light input can be switched on or off and tuned in intensity and duration to provide noninvasive, spatiotemporally resolved control of cellular processes.
Light can be turned on or off, and adjusting its intensity and duration allows optogenetic fine-tuning of cellular processes in a noninvasive and spatiotemporally resolved manner.
Light input can be switched on or off and tuned in intensity and duration to provide noninvasive, spatiotemporally resolved control of cellular processes.
Light can be turned on or off, and adjusting its intensity and duration allows optogenetic fine-tuning of cellular processes in a noninvasive and spatiotemporally resolved manner.
Light input can be switched on or off and tuned in intensity and duration to provide noninvasive, spatiotemporally resolved control of cellular processes.
Light can be turned on or off, and adjusting its intensity and duration allows optogenetic fine-tuning of cellular processes in a noninvasive and spatiotemporally resolved manner.
Light input can be switched on or off and tuned in intensity and duration to provide noninvasive, spatiotemporally resolved control of cellular processes.
Light can be turned on or off, and adjusting its intensity and duration allows optogenetic fine-tuning of cellular processes in a noninvasive and spatiotemporally resolved manner.
Light input can be switched on or off and tuned in intensity and duration to provide noninvasive, spatiotemporally resolved control of cellular processes.
Light can be turned on or off, and adjusting its intensity and duration allows optogenetic fine-tuning of cellular processes in a noninvasive and spatiotemporally resolved manner.
Optogenetic tools have been widely successful in multiple model organisms but have been used relatively rarely in plants.
optogenetic tools have been applied in a variety of model organisms with enormous success, but rarely in plants
Optogenetic tools have been widely successful in multiple model organisms but have been used relatively rarely in plants.
optogenetic tools have been applied in a variety of model organisms with enormous success, but rarely in plants
Optogenetic tools have been widely successful in multiple model organisms but have been used relatively rarely in plants.
optogenetic tools have been applied in a variety of model organisms with enormous success, but rarely in plants
Optogenetic tools have been widely successful in multiple model organisms but have been used relatively rarely in plants.
optogenetic tools have been applied in a variety of model organisms with enormous success, but rarely in plants
Optogenetic tools have been widely successful in multiple model organisms but have been used relatively rarely in plants.
optogenetic tools have been applied in a variety of model organisms with enormous success, but rarely in plants
Optogenetic tools have been widely successful in multiple model organisms but have been used relatively rarely in plants.
optogenetic tools have been applied in a variety of model organisms with enormous success, but rarely in plants
Optogenetic tools have been widely successful in multiple model organisms but have been used relatively rarely in plants.
optogenetic tools have been applied in a variety of model organisms with enormous success, but rarely in plants
Optogenetics uses natural or engineered photoreceptors in transgenic organisms to manipulate biological activities with light.
Optogenetics is a technique employing natural or genetically engineered photoreceptors in transgene organisms to manipulate biological activities with light.
Optogenetics uses natural or engineered photoreceptors in transgenic organisms to manipulate biological activities with light.
Optogenetics is a technique employing natural or genetically engineered photoreceptors in transgene organisms to manipulate biological activities with light.
Optogenetics uses natural or engineered photoreceptors in transgenic organisms to manipulate biological activities with light.
Optogenetics is a technique employing natural or genetically engineered photoreceptors in transgene organisms to manipulate biological activities with light.
Optogenetics uses natural or engineered photoreceptors in transgenic organisms to manipulate biological activities with light.
Optogenetics is a technique employing natural or genetically engineered photoreceptors in transgene organisms to manipulate biological activities with light.
Optogenetics uses natural or engineered photoreceptors in transgenic organisms to manipulate biological activities with light.
Optogenetics is a technique employing natural or genetically engineered photoreceptors in transgene organisms to manipulate biological activities with light.
Optogenetics uses natural or engineered photoreceptors in transgenic organisms to manipulate biological activities with light.
Optogenetics is a technique employing natural or genetically engineered photoreceptors in transgene organisms to manipulate biological activities with light.
Optogenetics uses natural or engineered photoreceptors in transgenic organisms to manipulate biological activities with light.
Optogenetics is a technique employing natural or genetically engineered photoreceptors in transgene organisms to manipulate biological activities with light.
Channelrhodopsin-2 is described as enabling millisecond neuromodulation.
Since the first demonstration of the millisecond neuromodulation ability of the channelrhodopsin-2 (ChR2)
Optogenetic technology progressed rapidly in basic life science research, especially neurobiology, after the first demonstration of ChR2-based millisecond neuromodulation.
the application of optogenetic technology in basic life science research has been rapidly progressed, especially in neurobiology
Channelrhodopsin-2-based optogenetic approaches can offer low-energy and localized control.
ChR2 expression in retinal ganglion cells of blind mice served as an early feasibility demonstration for optogenetic vision restoration.
Our first demonstration of the feasibility of such an approach involved expressing ChR2 in the retinal ganglion cells of blind mice
Implantable optical devices are being extensively developed for studying cardiac electrophysiological phenomena with precise optogenetic control.
Translation of implantable optogenetic technology toward clinical cardiovascular applications remains difficult and requires potential solutions.
These reviewed tools serve as powerful technical means to explore mechanisms underlying disease models and to evaluate drug effects in neuroscience.
CLARITY technology and optogenetics can be used to visualize neuronal circuits in whole-brain samples.
Tracer-based magnetic resonance imaging can be used to visualize the interstitial system of the brain.
The review covers MALDI time-of-flight mass spectrometry imaging, tracer-based MRI, CLARITY technology, and optogenetics as CNS study tools.
Spectrally shifted opsin variants can support enhanced tissue penetration, combinatorial stimulation of different cell subpopulations, and all-optical read-in and read-out studies.
The paper includes biocompatibility characterization of the implant platform.
The paper reports chronic rat pacing for up to 6 days.
The paper reports ex vivo optogenetic pacing in ChR2 hearts.
In cardiac physiology, optogenetics has mainly used optically controlled depolarizing ion channels to control heart rate and for optogenetic defibrillation.
Cardiac optogenetic stimulation can be read out using patch clamp, multi-unit microarray recordings, Langendorff heart electrical recordings, and optical reporters including small detecting molecules or genetically encoded sensors.
Optogenetic techniques use genetically expressed light-gated microbial channels or pumps to modulate cellular excitability with millisecond precision.
Cochlear optogenetics and optical cochlear implant work are framed around improved spectral selectivity relative to electrical cochlear implants.
The anchor article ... sits in the cochlear optogenetics / optical cochlear implant literature centered on spiral ganglion neuron (SGN) stimulation for improved spectral selectivity over electrical cochlear implants.
ChR2-expressing cardiomyocytes show normal baseline and active excitable membrane and Ca2+ signaling properties and are sensitive even to approximately 1 ms light pulses.
Expression of the chosen optogenetic tool in cardiac cells requires gene introduction by viral transduction or coupling via spark cells at the single-cell level, and transgenic expression or in vivo adenoviral delivery at system level.
Light delivery by laser or LED is relatively straightforward in vitro but is challenged in cardiac tissue by motion and light scattering.
The review includes caged compounds, photoswitchable tethered ligands, and engineered light-sensitive receptors or channels as optical control modalities.
The review explicitly spans optogenetics and optopharmacology/photopharmacology for neuronal ion channels and neurotransmitter receptors, including caged compounds, photoswitchable tethered ligands, and engineered light-sensitive receptors/channels.
Biophysical properties of microbial opsins determine their ability to evoke reliable and precise stimulation or silencing of electrophysiological activity.
The implant platform includes wireless energy-harvesting and digital communication electronics for battery-free operation.
The implant platform supports both electrical and optical stimulation.
The paper presents wireless, battery-free, fully implantable multimodal and multisite pacemakers for applications in small animal models.
Named platforms aligned with the review's scope include LiGluR, LiGluN, LimGluR, optogating, ChR2, and Arch.
Primary papers for specific photoswitchable receptor platforms explicitly named in or strongly aligned with the review (LiGluR, LiGluN, LimGluR, optogating of P2X2)... Channelrhodopsin-2 (ChR2)... Arch.
Comparison with the ChR2 C128T structure reveals a direct connection of the DC gate to the central gate and suggests that the gating mechanism is affected by subtle tuning of Schiff base interactions.
Comparison with the C128T structure reveals a direct connection of the DC gate to the central gate and suggests how the gating mechanism is affected by subtle tuning of the Schiff base's interactions.
Comparison with the ChR2 C128T structure reveals a direct connection of the DC gate to the central gate and suggests that the gating mechanism is affected by subtle tuning of Schiff base interactions.
Comparison with the C128T structure reveals a direct connection of the DC gate to the central gate and suggests how the gating mechanism is affected by subtle tuning of the Schiff base's interactions.
Comparison with the ChR2 C128T structure reveals a direct connection of the DC gate to the central gate and suggests that the gating mechanism is affected by subtle tuning of Schiff base interactions.
Comparison with the C128T structure reveals a direct connection of the DC gate to the central gate and suggests how the gating mechanism is affected by subtle tuning of the Schiff base's interactions.
Comparison with the ChR2 C128T structure reveals a direct connection of the DC gate to the central gate and suggests that the gating mechanism is affected by subtle tuning of Schiff base interactions.
Comparison with the C128T structure reveals a direct connection of the DC gate to the central gate and suggests how the gating mechanism is affected by subtle tuning of the Schiff base's interactions.
Comparison with the ChR2 C128T structure reveals a direct connection of the DC gate to the central gate and suggests that the gating mechanism is affected by subtle tuning of Schiff base interactions.
Comparison with the C128T structure reveals a direct connection of the DC gate to the central gate and suggests how the gating mechanism is affected by subtle tuning of the Schiff base's interactions.
Comparison with the ChR2 C128T structure reveals a direct connection of the DC gate to the central gate and suggests that the gating mechanism is affected by subtle tuning of Schiff base interactions.
Comparison with the C128T structure reveals a direct connection of the DC gate to the central gate and suggests how the gating mechanism is affected by subtle tuning of the Schiff base's interactions.
Comparison with the ChR2 C128T structure reveals a direct connection of the DC gate to the central gate and suggests that the gating mechanism is affected by subtle tuning of Schiff base interactions.
Comparison with the C128T structure reveals a direct connection of the DC gate to the central gate and suggests how the gating mechanism is affected by subtle tuning of the Schiff base's interactions.
The ChR2 C128T mutant has a markedly increased open-state lifetime.
the C128T mutant, which has a markedly increased open-state lifetime
The ChR2 C128T mutant has a markedly increased open-state lifetime.
the C128T mutant, which has a markedly increased open-state lifetime
The ChR2 C128T mutant has a markedly increased open-state lifetime.
the C128T mutant, which has a markedly increased open-state lifetime
The ChR2 C128T mutant has a markedly increased open-state lifetime.
the C128T mutant, which has a markedly increased open-state lifetime
The ChR2 C128T mutant has a markedly increased open-state lifetime.
the C128T mutant, which has a markedly increased open-state lifetime
The ChR2 C128T mutant has a markedly increased open-state lifetime.
the C128T mutant, which has a markedly increased open-state lifetime
The ChR2 C128T mutant has a markedly increased open-state lifetime.
the C128T mutant, which has a markedly increased open-state lifetime
In ChR2, the retinal Schiff base controls and synchronizes three gates that separate the cavities.
Central is the retinal Schiff base that controls and synchronizes three gates that separate the cavities.
In ChR2, the retinal Schiff base controls and synchronizes three gates that separate the cavities.
Central is the retinal Schiff base that controls and synchronizes three gates that separate the cavities.
In ChR2, the retinal Schiff base controls and synchronizes three gates that separate the cavities.
Central is the retinal Schiff base that controls and synchronizes three gates that separate the cavities.
In ChR2, the retinal Schiff base controls and synchronizes three gates that separate the cavities.
Central is the retinal Schiff base that controls and synchronizes three gates that separate the cavities.
In ChR2, the retinal Schiff base controls and synchronizes three gates that separate the cavities.
Central is the retinal Schiff base that controls and synchronizes three gates that separate the cavities.
In ChR2, the retinal Schiff base controls and synchronizes three gates that separate the cavities.
Central is the retinal Schiff base that controls and synchronizes three gates that separate the cavities.
In ChR2, the retinal Schiff base controls and synchronizes three gates that separate the cavities.
Central is the retinal Schiff base that controls and synchronizes three gates that separate the cavities.
The ChR2 structure reveals two intracellular cavities and two extracellular cavities connected by extended hydrogen-bonding networks involving water molecules and side-chain residues.
The structure reveals two cavities on the intracellular side and two cavities on the extracellular side. They are connected by extended hydrogen-bonding networks involving water molecules and side-chain residues.
The ChR2 structure reveals two intracellular cavities and two extracellular cavities connected by extended hydrogen-bonding networks involving water molecules and side-chain residues.
The structure reveals two cavities on the intracellular side and two cavities on the extracellular side. They are connected by extended hydrogen-bonding networks involving water molecules and side-chain residues.
The ChR2 structure reveals two intracellular cavities and two extracellular cavities connected by extended hydrogen-bonding networks involving water molecules and side-chain residues.
The structure reveals two cavities on the intracellular side and two cavities on the extracellular side. They are connected by extended hydrogen-bonding networks involving water molecules and side-chain residues.
The ChR2 structure reveals two intracellular cavities and two extracellular cavities connected by extended hydrogen-bonding networks involving water molecules and side-chain residues.
The structure reveals two cavities on the intracellular side and two cavities on the extracellular side. They are connected by extended hydrogen-bonding networks involving water molecules and side-chain residues.
The ChR2 structure reveals two intracellular cavities and two extracellular cavities connected by extended hydrogen-bonding networks involving water molecules and side-chain residues.
The structure reveals two cavities on the intracellular side and two cavities on the extracellular side. They are connected by extended hydrogen-bonding networks involving water molecules and side-chain residues.
The ChR2 structure reveals two intracellular cavities and two extracellular cavities connected by extended hydrogen-bonding networks involving water molecules and side-chain residues.
The structure reveals two cavities on the intracellular side and two cavities on the extracellular side. They are connected by extended hydrogen-bonding networks involving water molecules and side-chain residues.
The ChR2 structure reveals two intracellular cavities and two extracellular cavities connected by extended hydrogen-bonding networks involving water molecules and side-chain residues.
The structure reveals two cavities on the intracellular side and two cavities on the extracellular side. They are connected by extended hydrogen-bonding networks involving water molecules and side-chain residues.
The DC gate in ChR2 comprises a water-mediated bond between C128 and D156 and interacts directly with the retinal Schiff base.
Separate from this network is the DC gate that comprises a water-mediated bond between C128 and D156 and interacts directly with the retinal Schiff base.
The DC gate in ChR2 comprises a water-mediated bond between C128 and D156 and interacts directly with the retinal Schiff base.
Separate from this network is the DC gate that comprises a water-mediated bond between C128 and D156 and interacts directly with the retinal Schiff base.
The DC gate in ChR2 comprises a water-mediated bond between C128 and D156 and interacts directly with the retinal Schiff base.
Separate from this network is the DC gate that comprises a water-mediated bond between C128 and D156 and interacts directly with the retinal Schiff base.
The DC gate in ChR2 comprises a water-mediated bond between C128 and D156 and interacts directly with the retinal Schiff base.
Separate from this network is the DC gate that comprises a water-mediated bond between C128 and D156 and interacts directly with the retinal Schiff base.
The DC gate in ChR2 comprises a water-mediated bond between C128 and D156 and interacts directly with the retinal Schiff base.
Separate from this network is the DC gate that comprises a water-mediated bond between C128 and D156 and interacts directly with the retinal Schiff base.
The DC gate in ChR2 comprises a water-mediated bond between C128 and D156 and interacts directly with the retinal Schiff base.
Separate from this network is the DC gate that comprises a water-mediated bond between C128 and D156 and interacts directly with the retinal Schiff base.
The DC gate in ChR2 comprises a water-mediated bond between C128 and D156 and interacts directly with the retinal Schiff base.
Separate from this network is the DC gate that comprises a water-mediated bond between C128 and D156 and interacts directly with the retinal Schiff base.
High-resolution structures were presented for ChR2 and the ChR2 C128T mutant.
We present high-resolution structures of ChR2 and the C128T mutant
High-resolution structures were presented for ChR2 and the ChR2 C128T mutant.
We present high-resolution structures of ChR2 and the C128T mutant
High-resolution structures were presented for ChR2 and the ChR2 C128T mutant.
We present high-resolution structures of ChR2 and the C128T mutant
High-resolution structures were presented for ChR2 and the ChR2 C128T mutant.
We present high-resolution structures of ChR2 and the C128T mutant
High-resolution structures were presented for ChR2 and the ChR2 C128T mutant.
We present high-resolution structures of ChR2 and the C128T mutant
High-resolution structures were presented for ChR2 and the ChR2 C128T mutant.
We present high-resolution structures of ChR2 and the C128T mutant
High-resolution structures were presented for ChR2 and the ChR2 C128T mutant.
We present high-resolution structures of ChR2 and the C128T mutant
Channelrhodopsin 2 is a major optogenetic tool.
The light-gated ion channel channelrhodopsin 2 (ChR2) from Chlamydomonas reinhardtii is a major optogenetic tool.
Channelrhodopsin 2 is a major optogenetic tool.
The light-gated ion channel channelrhodopsin 2 (ChR2) from Chlamydomonas reinhardtii is a major optogenetic tool.
Channelrhodopsin 2 is a major optogenetic tool.
The light-gated ion channel channelrhodopsin 2 (ChR2) from Chlamydomonas reinhardtii is a major optogenetic tool.
Channelrhodopsin 2 is a major optogenetic tool.
The light-gated ion channel channelrhodopsin 2 (ChR2) from Chlamydomonas reinhardtii is a major optogenetic tool.
Channelrhodopsin 2 is a major optogenetic tool.
The light-gated ion channel channelrhodopsin 2 (ChR2) from Chlamydomonas reinhardtii is a major optogenetic tool.
Channelrhodopsin 2 is a major optogenetic tool.
The light-gated ion channel channelrhodopsin 2 (ChR2) from Chlamydomonas reinhardtii is a major optogenetic tool.
Channelrhodopsin 2 is a major optogenetic tool.
The light-gated ion channel channelrhodopsin 2 (ChR2) from Chlamydomonas reinhardtii is a major optogenetic tool.
Optogenetic defibrillation using cardiac ChR2 expression effectively terminated ventricular arrhythmias in mouse hearts.
Combining channelrhodopsin-2 with halorhodopsin enables multimodal remote control of neuronal cells in culture, tissue, and living animals.
The combination of ChR2 with hyperpolarizing-light-driven ion pumps such as the Cl(-) pump halorhodopsin (NpHR) enables multimodal remote control of neuronal cells in culture, tissue, and living animals.
Combining channelrhodopsin-2 with halorhodopsin enables multimodal remote control of neuronal cells in culture, tissue, and living animals.
The combination of ChR2 with hyperpolarizing-light-driven ion pumps such as the Cl(-) pump halorhodopsin (NpHR) enables multimodal remote control of neuronal cells in culture, tissue, and living animals.
Combining channelrhodopsin-2 with halorhodopsin enables multimodal remote control of neuronal cells in culture, tissue, and living animals.
The combination of ChR2 with hyperpolarizing-light-driven ion pumps such as the Cl(-) pump halorhodopsin (NpHR) enables multimodal remote control of neuronal cells in culture, tissue, and living animals.
Combining channelrhodopsin-2 with halorhodopsin enables multimodal remote control of neuronal cells in culture, tissue, and living animals.
The combination of ChR2 with hyperpolarizing-light-driven ion pumps such as the Cl(-) pump halorhodopsin (NpHR) enables multimodal remote control of neuronal cells in culture, tissue, and living animals.
Combining channelrhodopsin-2 with halorhodopsin enables multimodal remote control of neuronal cells in culture, tissue, and living animals.
The combination of ChR2 with hyperpolarizing-light-driven ion pumps such as the Cl(-) pump halorhodopsin (NpHR) enables multimodal remote control of neuronal cells in culture, tissue, and living animals.
Combining channelrhodopsin-2 with halorhodopsin enables multimodal remote control of neuronal cells in culture, tissue, and living animals.
The combination of ChR2 with hyperpolarizing-light-driven ion pumps such as the Cl(-) pump halorhodopsin (NpHR) enables multimodal remote control of neuronal cells in culture, tissue, and living animals.
Combining channelrhodopsin-2 with halorhodopsin enables multimodal remote control of neuronal cells in culture, tissue, and living animals.
The combination of ChR2 with hyperpolarizing-light-driven ion pumps such as the Cl(-) pump halorhodopsin (NpHR) enables multimodal remote control of neuronal cells in culture, tissue, and living animals.
New genetically encoded tools have been applied to feeding circuits that regulate appetite.
This chapter reviews the application of new genetically encoded tools in feeding circuits that regulate appetite.
Rapid activation and inhibition of AgRP neurons established a causal role for rapid control of food intake.
Rapid activation and inhibition of agouti related peptide (AgRP) neurons conclusively established a causal role for rapid control of food intake.
Chemogenetic activation of AgRP neurons using hM3Dq avoids the invasive protocols required for ChR2 activation.
Chemogenetic activation of AgRP neurons using hM3Dq avoids the invasive protocols required for ChR2 activation.
Optical VTA stimulation does not restore righting or produce EEG changes in control DAT-cre mice targeted with a viral vector lacking ChR2 during steady-state isoflurane anesthesia.
AAV-based gene transfer of ChR2 enabled effective optogenetic termination of ventricular arrhythmias in WT mouse hearts.
D1 receptor antagonist pretreatment inhibits the arousal and righting-restoration effects of optical stimulation of VTA dopamine neurons during isoflurane anesthesia.
Ventricular tachycardia termination was attributed to ChR2-mediated transmural depolarization that blocks voltage-dependent Na+ channels throughout the myocardial wall and interrupts wavefront propagation into illuminated tissue.
Channelrhodopsin-2 enables activation of electrically excitable cells through light-dependent depolarization.
The most prominent example is channelrhodopsin-2 (ChR2), which allows the activation of electrically excitable cells via light-dependent depolarization.
Channelrhodopsin-2 enables activation of electrically excitable cells through light-dependent depolarization.
The most prominent example is channelrhodopsin-2 (ChR2), which allows the activation of electrically excitable cells via light-dependent depolarization.
Channelrhodopsin-2 enables activation of electrically excitable cells through light-dependent depolarization.
The most prominent example is channelrhodopsin-2 (ChR2), which allows the activation of electrically excitable cells via light-dependent depolarization.
Channelrhodopsin-2 enables activation of electrically excitable cells through light-dependent depolarization.
The most prominent example is channelrhodopsin-2 (ChR2), which allows the activation of electrically excitable cells via light-dependent depolarization.
Channelrhodopsin-2 enables activation of electrically excitable cells through light-dependent depolarization.
The most prominent example is channelrhodopsin-2 (ChR2), which allows the activation of electrically excitable cells via light-dependent depolarization.
Channelrhodopsin-2 enables activation of electrically excitable cells through light-dependent depolarization.
The most prominent example is channelrhodopsin-2 (ChR2), which allows the activation of electrically excitable cells via light-dependent depolarization.
Channelrhodopsin-2 enables activation of electrically excitable cells through light-dependent depolarization.
The most prominent example is channelrhodopsin-2 (ChR2), which allows the activation of electrically excitable cells via light-dependent depolarization.
ChR2 distributes into axons, enabling selective optogenetic activation of AgRP neuron axon projection fields in distinct brain areas to examine their contribution to feeding behavior.
ChR2 distributes into axons, and selective optogenetic activation of AgRP neuron axon projection fields in distinct brain areas was used to examine their individual contribution to feeding behavior.
In diseased ChR2-expressing human heart simulations, red light effectively terminated ventricular tachycardia.
Selective optogenetic activation of VTA dopamine neurons is sufficient to induce arousal from an anesthetized unconscious state during steady-state isoflurane anesthesia.
GCaMP6s is used in the review context as an activity reporter example for zebrafish brain imaging.
The anchor figure caption explicitly cites GCaMP6s for zebrafish brain activity imaging.
LOVpep and ePDZ are presented in the review context as a light-induced intracellular trafficking control system.
The anchor figure caption names LOVpep and ePDZ in a light-induced trafficking example.
Optopatch is presented in the review context as an all-optical electrophysiology system with CheRiff and QuasAr2 as named components.
PubMed figure captions ... explicitly mention tool/component names used in the review, especially Optopatch/CheRiff/QuasAr2.
The review context includes inhibitory opsins, excitatory opsins, closed-loop seizure detection, and luminopsin-based approaches as relevant seizure-control tools or components.
Explicitly supported component/tool names found in these sources include NpHR, ChR2, ArchT, closed-loop real-time seizure detection, and inhibitory luminopsins.
pMag and nMag are presented in the review context as a light-induced dimerization pair used to reconstitute split Cas9 in photoactivatable genome editing.
The anchor figure caption names pMag as one half of the light-induced dimerization pair used to reconstitute split Cas9 ... nMag as the partner to pMag.
Optogenetic defibrillation could potentially be translated into humans to achieve nondamaging and pain-free termination of ventricular arrhythmia.
Optical modulation for optogenetic assays can be obtained in a miniaturized 384-well plate format using the FLIPR instrument.
we sought to determine if this optical modulation can be obtained also in a miniaturized format, such as a 384-well plate, using the instrumentations normally dedicated to fluorescence analysis in High Throughput Screening (HTS) activities, such as for example the FLIPR (Fluorometric Imaging Plate Reader) instrument
Optical modulation for optogenetic assays can be obtained in a miniaturized 384-well plate format using the FLIPR instrument.
we sought to determine if this optical modulation can be obtained also in a miniaturized format, such as a 384-well plate, using the instrumentations normally dedicated to fluorescence analysis in High Throughput Screening (HTS) activities, such as for example the FLIPR (Fluorometric Imaging Plate Reader) instrument
Optical modulation for optogenetic assays can be obtained in a miniaturized 384-well plate format using the FLIPR instrument.
we sought to determine if this optical modulation can be obtained also in a miniaturized format, such as a 384-well plate, using the instrumentations normally dedicated to fluorescence analysis in High Throughput Screening (HTS) activities, such as for example the FLIPR (Fluorometric Imaging Plate Reader) instrument
Optical modulation for optogenetic assays can be obtained in a miniaturized 384-well plate format using the FLIPR instrument.
we sought to determine if this optical modulation can be obtained also in a miniaturized format, such as a 384-well plate, using the instrumentations normally dedicated to fluorescence analysis in High Throughput Screening (HTS) activities, such as for example the FLIPR (Fluorometric Imaging Plate Reader) instrument
Optical modulation for optogenetic assays can be obtained in a miniaturized 384-well plate format using the FLIPR instrument.
we sought to determine if this optical modulation can be obtained also in a miniaturized format, such as a 384-well plate, using the instrumentations normally dedicated to fluorescence analysis in High Throughput Screening (HTS) activities, such as for example the FLIPR (Fluorometric Imaging Plate Reader) instrument
Optical modulation for optogenetic assays can be obtained in a miniaturized 384-well plate format using the FLIPR instrument.
we sought to determine if this optical modulation can be obtained also in a miniaturized format, such as a 384-well plate, using the instrumentations normally dedicated to fluorescence analysis in High Throughput Screening (HTS) activities, such as for example the FLIPR (Fluorometric Imaging Plate Reader) instrument
Optical modulation for optogenetic assays can be obtained in a miniaturized 384-well plate format using the FLIPR instrument.
we sought to determine if this optical modulation can be obtained also in a miniaturized format, such as a 384-well plate, using the instrumentations normally dedicated to fluorescence analysis in High Throughput Screening (HTS) activities, such as for example the FLIPR (Fluorometric Imaging Plate Reader) instrument
Stable, robust, and miniaturized cellular assays can be developed using different optogenetic tools and modulated by FLIPR LEDs in a 384-well format.
stable, robust and miniaturized cellular assays can be developed using different optogenetic tools, and efficiently modulated by the FLIPR instrument LEDs in a 384-well format
Stable, robust, and miniaturized cellular assays can be developed using different optogenetic tools and modulated by FLIPR LEDs in a 384-well format.
stable, robust and miniaturized cellular assays can be developed using different optogenetic tools, and efficiently modulated by the FLIPR instrument LEDs in a 384-well format
Stable, robust, and miniaturized cellular assays can be developed using different optogenetic tools and modulated by FLIPR LEDs in a 384-well format.
stable, robust and miniaturized cellular assays can be developed using different optogenetic tools, and efficiently modulated by the FLIPR instrument LEDs in a 384-well format
Stable, robust, and miniaturized cellular assays can be developed using different optogenetic tools and modulated by FLIPR LEDs in a 384-well format.
stable, robust and miniaturized cellular assays can be developed using different optogenetic tools, and efficiently modulated by the FLIPR instrument LEDs in a 384-well format
Stable, robust, and miniaturized cellular assays can be developed using different optogenetic tools and modulated by FLIPR LEDs in a 384-well format.
stable, robust and miniaturized cellular assays can be developed using different optogenetic tools, and efficiently modulated by the FLIPR instrument LEDs in a 384-well format
Stable, robust, and miniaturized cellular assays can be developed using different optogenetic tools and modulated by FLIPR LEDs in a 384-well format.
stable, robust and miniaturized cellular assays can be developed using different optogenetic tools, and efficiently modulated by the FLIPR instrument LEDs in a 384-well format
Stable, robust, and miniaturized cellular assays can be developed using different optogenetic tools and modulated by FLIPR LEDs in a 384-well format.
stable, robust and miniaturized cellular assays can be developed using different optogenetic tools, and efficiently modulated by the FLIPR instrument LEDs in a 384-well format
Channelrhodopsin-2 can be used to control the number and frequency of action potentials.
Using the naturally occurring algal protein Channelrhodopsin-2 (ChR2), a rapidly gated light-sensitive cation channel, the number and frequency of action potentials can be controlled.
Channelrhodopsin-2 can be used to control the number and frequency of action potentials.
Using the naturally occurring algal protein Channelrhodopsin-2 (ChR2), a rapidly gated light-sensitive cation channel, the number and frequency of action potentials can be controlled.
Channelrhodopsin-2 can be used to control the number and frequency of action potentials.
Using the naturally occurring algal protein Channelrhodopsin-2 (ChR2), a rapidly gated light-sensitive cation channel, the number and frequency of action potentials can be controlled.
Channelrhodopsin-2 can be used to control the number and frequency of action potentials.
Using the naturally occurring algal protein Channelrhodopsin-2 (ChR2), a rapidly gated light-sensitive cation channel, the number and frequency of action potentials can be controlled.
Channelrhodopsin-2 can be used to control the number and frequency of action potentials.
Using the naturally occurring algal protein Channelrhodopsin-2 (ChR2), a rapidly gated light-sensitive cation channel, the number and frequency of action potentials can be controlled.
Channelrhodopsin-2 can be used to control the number and frequency of action potentials.
Using the naturally occurring algal protein Channelrhodopsin-2 (ChR2), a rapidly gated light-sensitive cation channel, the number and frequency of action potentials can be controlled.
Channelrhodopsin-2 can be used to control the number and frequency of action potentials.
Using the naturally occurring algal protein Channelrhodopsin-2 (ChR2), a rapidly gated light-sensitive cation channel, the number and frequency of action potentials can be controlled.
bPAC adenylyl cyclase was used to modulate the HCN2 cyclic nucleotide gated channel in an optogenetic assay.
the HCN2 cyclic nucleotide gated (CNG) channel was modulated by the light activated bPAC adenylyl cyclase
bPAC adenylyl cyclase was used to modulate the HCN2 cyclic nucleotide gated channel in an optogenetic assay.
the HCN2 cyclic nucleotide gated (CNG) channel was modulated by the light activated bPAC adenylyl cyclase
bPAC adenylyl cyclase was used to modulate the HCN2 cyclic nucleotide gated channel in an optogenetic assay.
the HCN2 cyclic nucleotide gated (CNG) channel was modulated by the light activated bPAC adenylyl cyclase
bPAC adenylyl cyclase was used to modulate the HCN2 cyclic nucleotide gated channel in an optogenetic assay.
the HCN2 cyclic nucleotide gated (CNG) channel was modulated by the light activated bPAC adenylyl cyclase
bPAC adenylyl cyclase was used to modulate the HCN2 cyclic nucleotide gated channel in an optogenetic assay.
the HCN2 cyclic nucleotide gated (CNG) channel was modulated by the light activated bPAC adenylyl cyclase
bPAC adenylyl cyclase was used to modulate the HCN2 cyclic nucleotide gated channel in an optogenetic assay.
the HCN2 cyclic nucleotide gated (CNG) channel was modulated by the light activated bPAC adenylyl cyclase
bPAC adenylyl cyclase was used to modulate the HCN2 cyclic nucleotide gated channel in an optogenetic assay.
the HCN2 cyclic nucleotide gated (CNG) channel was modulated by the light activated bPAC adenylyl cyclase
Channelrhodopsin-2 was used to modulate the CaV1.3 calcium channel in an optogenetic assay.
the CaV1.3 calcium channel was modulated by the light-activated Channelrhodopsin-2
Channelrhodopsin-2 was used to modulate the CaV1.3 calcium channel in an optogenetic assay.
the CaV1.3 calcium channel was modulated by the light-activated Channelrhodopsin-2
Channelrhodopsin-2 was used to modulate the CaV1.3 calcium channel in an optogenetic assay.
the CaV1.3 calcium channel was modulated by the light-activated Channelrhodopsin-2
Channelrhodopsin-2 was used to modulate the CaV1.3 calcium channel in an optogenetic assay.
the CaV1.3 calcium channel was modulated by the light-activated Channelrhodopsin-2
Channelrhodopsin-2 was used to modulate the CaV1.3 calcium channel in an optogenetic assay.
the CaV1.3 calcium channel was modulated by the light-activated Channelrhodopsin-2
Channelrhodopsin-2 was used to modulate the CaV1.3 calcium channel in an optogenetic assay.
the CaV1.3 calcium channel was modulated by the light-activated Channelrhodopsin-2
Channelrhodopsin-2 provides a way to manipulate a single type of neuron while affecting no others.
The ChR2 provides a way to manipulate a single type of neuron while affecting no others, an unprecedented specificity.
Channelrhodopsin-2 provides a way to manipulate a single type of neuron while affecting no others.
The ChR2 provides a way to manipulate a single type of neuron while affecting no others, an unprecedented specificity.
Channelrhodopsin-2 provides a way to manipulate a single type of neuron while affecting no others.
The ChR2 provides a way to manipulate a single type of neuron while affecting no others, an unprecedented specificity.
Channelrhodopsin-2 provides a way to manipulate a single type of neuron while affecting no others.
The ChR2 provides a way to manipulate a single type of neuron while affecting no others, an unprecedented specificity.
Channelrhodopsin-2 provides a way to manipulate a single type of neuron while affecting no others.
The ChR2 provides a way to manipulate a single type of neuron while affecting no others, an unprecedented specificity.
Channelrhodopsin-2 provides a way to manipulate a single type of neuron while affecting no others.
The ChR2 provides a way to manipulate a single type of neuron while affecting no others, an unprecedented specificity.
Channelrhodopsin-2 provides a way to manipulate a single type of neuron while affecting no others.
The ChR2 provides a way to manipulate a single type of neuron while affecting no others, an unprecedented specificity.
The review context highlights optogenetic and chemogenetic tools as major approaches for manipulating genetically defined amygdala populations in fear-circuit studies.
ChR2 has been used to control neuronal activity in vitro and in vivo on short time scales and with exquisite anatomical precision.
ChR2 has been used by many groups to control neuronal activity, both in vitro and in vivo , on short time scales and with exquisite anatomical precision.
Optogenetic stimulation of spiral ganglion neurons restored auditory activity in deaf mice.
Furthermore, optogenetic stimulation of SGNs restored auditory activity in deaf mice.
Light-activated Gq protein-coupled opsins are described as a way to selectively activate astrocytes to explore the influence of gliotransmission on epileptic network function.
The influence of gliotransmission on epileptic network function is another topic of great interest that can be further explored by using light-activated Gq protein-coupled opsins for selective activation of astrocytes.
Light-activated Gq protein-coupled opsins are described as a way to selectively activate astrocytes to explore the influence of gliotransmission on epileptic network function.
The influence of gliotransmission on epileptic network function is another topic of great interest that can be further explored by using light-activated Gq protein-coupled opsins for selective activation of astrocytes.
Light-activated Gq protein-coupled opsins are described as a way to selectively activate astrocytes to explore the influence of gliotransmission on epileptic network function.
The influence of gliotransmission on epileptic network function is another topic of great interest that can be further explored by using light-activated Gq protein-coupled opsins for selective activation of astrocytes.
Light-activated Gq protein-coupled opsins are described as a way to selectively activate astrocytes to explore the influence of gliotransmission on epileptic network function.
The influence of gliotransmission on epileptic network function is another topic of great interest that can be further explored by using light-activated Gq protein-coupled opsins for selective activation of astrocytes.
Light-activated Gq protein-coupled opsins are described as a way to selectively activate astrocytes to explore the influence of gliotransmission on epileptic network function.
The influence of gliotransmission on epileptic network function is another topic of great interest that can be further explored by using light-activated Gq protein-coupled opsins for selective activation of astrocytes.
Light-activated Gq protein-coupled opsins are described as a way to selectively activate astrocytes to explore the influence of gliotransmission on epileptic network function.
The influence of gliotransmission on epileptic network function is another topic of great interest that can be further explored by using light-activated Gq protein-coupled opsins for selective activation of astrocytes.
Light-activated Gq protein-coupled opsins are described as a way to selectively activate astrocytes to explore the influence of gliotransmission on epileptic network function.
The influence of gliotransmission on epileptic network function is another topic of great interest that can be further explored by using light-activated Gq protein-coupled opsins for selective activation of astrocytes.
Channelrhodopsin-2, halorhodopsin, and archaerhodopsin-3 are presented as potent optogenetic candidates for controlling neuronal firing in models of epilepsy and for providing insights into neuronal network organization and synchronization.
The versatility and the electrophysiologic characteristics of the light-sensitive ion-channels channelrhodopsin-2 (ChR2), halorhodopsin (NpHR), and the light-sensitive proton pump archaerhodopsin-3 (Arch) make these optogenetic tools potent candidates in controlling neuronal firing in models of epilepsy and in providing insights into the physiology and pathology of neuronal network organization and synchronization.
Channelrhodopsin-2, halorhodopsin, and archaerhodopsin-3 are presented as potent optogenetic candidates for controlling neuronal firing in models of epilepsy and for providing insights into neuronal network organization and synchronization.
The versatility and the electrophysiologic characteristics of the light-sensitive ion-channels channelrhodopsin-2 (ChR2), halorhodopsin (NpHR), and the light-sensitive proton pump archaerhodopsin-3 (Arch) make these optogenetic tools potent candidates in controlling neuronal firing in models of epilepsy and in providing insights into the physiology and pathology of neuronal network organization and synchronization.
Channelrhodopsin-2, halorhodopsin, and archaerhodopsin-3 are presented as potent optogenetic candidates for controlling neuronal firing in models of epilepsy and for providing insights into neuronal network organization and synchronization.
The versatility and the electrophysiologic characteristics of the light-sensitive ion-channels channelrhodopsin-2 (ChR2), halorhodopsin (NpHR), and the light-sensitive proton pump archaerhodopsin-3 (Arch) make these optogenetic tools potent candidates in controlling neuronal firing in models of epilepsy and in providing insights into the physiology and pathology of neuronal network organization and synchronization.
Channelrhodopsin-2, halorhodopsin, and archaerhodopsin-3 are presented as potent optogenetic candidates for controlling neuronal firing in models of epilepsy and for providing insights into neuronal network organization and synchronization.
The versatility and the electrophysiologic characteristics of the light-sensitive ion-channels channelrhodopsin-2 (ChR2), halorhodopsin (NpHR), and the light-sensitive proton pump archaerhodopsin-3 (Arch) make these optogenetic tools potent candidates in controlling neuronal firing in models of epilepsy and in providing insights into the physiology and pathology of neuronal network organization and synchronization.
Channelrhodopsin-2, halorhodopsin, and archaerhodopsin-3 are presented as potent optogenetic candidates for controlling neuronal firing in models of epilepsy and for providing insights into neuronal network organization and synchronization.
The versatility and the electrophysiologic characteristics of the light-sensitive ion-channels channelrhodopsin-2 (ChR2), halorhodopsin (NpHR), and the light-sensitive proton pump archaerhodopsin-3 (Arch) make these optogenetic tools potent candidates in controlling neuronal firing in models of epilepsy and in providing insights into the physiology and pathology of neuronal network organization and synchronization.
Channelrhodopsin-2, halorhodopsin, and archaerhodopsin-3 are presented as potent optogenetic candidates for controlling neuronal firing in models of epilepsy and for providing insights into neuronal network organization and synchronization.
The versatility and the electrophysiologic characteristics of the light-sensitive ion-channels channelrhodopsin-2 (ChR2), halorhodopsin (NpHR), and the light-sensitive proton pump archaerhodopsin-3 (Arch) make these optogenetic tools potent candidates in controlling neuronal firing in models of epilepsy and in providing insights into the physiology and pathology of neuronal network organization and synchronization.
Channelrhodopsin-2, halorhodopsin, and archaerhodopsin-3 are presented as potent optogenetic candidates for controlling neuronal firing in models of epilepsy and for providing insights into neuronal network organization and synchronization.
The versatility and the electrophysiologic characteristics of the light-sensitive ion-channels channelrhodopsin-2 (ChR2), halorhodopsin (NpHR), and the light-sensitive proton pump archaerhodopsin-3 (Arch) make these optogenetic tools potent candidates in controlling neuronal firing in models of epilepsy and in providing insights into the physiology and pathology of neuronal network organization and synchronization.
The optogenetic toolbox can be combined with juxtacellular recording and two-photon guided whole-cell recording to help identify specific cortical and hippocampal neuron subtypes altered in epileptic networks.
The ever-growing optogenetic toolbox can also be combined with emerging techniques that have greatly expanded our ability to record specific subtypes of cortical and hippocampal neurons in awake behaving animals such as juxtacellular recording and two-photon guided whole-cell recording, to identify the specific subtypes of neurons that are altered in epileptic networks.
The optogenetic toolbox can be combined with juxtacellular recording and two-photon guided whole-cell recording to help identify specific cortical and hippocampal neuron subtypes altered in epileptic networks.
The ever-growing optogenetic toolbox can also be combined with emerging techniques that have greatly expanded our ability to record specific subtypes of cortical and hippocampal neurons in awake behaving animals such as juxtacellular recording and two-photon guided whole-cell recording, to identify the specific subtypes of neurons that are altered in epileptic networks.
The optogenetic toolbox can be combined with juxtacellular recording and two-photon guided whole-cell recording to help identify specific cortical and hippocampal neuron subtypes altered in epileptic networks.
The ever-growing optogenetic toolbox can also be combined with emerging techniques that have greatly expanded our ability to record specific subtypes of cortical and hippocampal neurons in awake behaving animals such as juxtacellular recording and two-photon guided whole-cell recording, to identify the specific subtypes of neurons that are altered in epileptic networks.
The optogenetic toolbox can be combined with juxtacellular recording and two-photon guided whole-cell recording to help identify specific cortical and hippocampal neuron subtypes altered in epileptic networks.
The ever-growing optogenetic toolbox can also be combined with emerging techniques that have greatly expanded our ability to record specific subtypes of cortical and hippocampal neurons in awake behaving animals such as juxtacellular recording and two-photon guided whole-cell recording, to identify the specific subtypes of neurons that are altered in epileptic networks.
The optogenetic toolbox can be combined with juxtacellular recording and two-photon guided whole-cell recording to help identify specific cortical and hippocampal neuron subtypes altered in epileptic networks.
The ever-growing optogenetic toolbox can also be combined with emerging techniques that have greatly expanded our ability to record specific subtypes of cortical and hippocampal neurons in awake behaving animals such as juxtacellular recording and two-photon guided whole-cell recording, to identify the specific subtypes of neurons that are altered in epileptic networks.
The optogenetic toolbox can be combined with juxtacellular recording and two-photon guided whole-cell recording to help identify specific cortical and hippocampal neuron subtypes altered in epileptic networks.
The ever-growing optogenetic toolbox can also be combined with emerging techniques that have greatly expanded our ability to record specific subtypes of cortical and hippocampal neurons in awake behaving animals such as juxtacellular recording and two-photon guided whole-cell recording, to identify the specific subtypes of neurons that are altered in epileptic networks.
The optogenetic toolbox can be combined with juxtacellular recording and two-photon guided whole-cell recording to help identify specific cortical and hippocampal neuron subtypes altered in epileptic networks.
The ever-growing optogenetic toolbox can also be combined with emerging techniques that have greatly expanded our ability to record specific subtypes of cortical and hippocampal neurons in awake behaving animals such as juxtacellular recording and two-photon guided whole-cell recording, to identify the specific subtypes of neurons that are altered in epileptic networks.
Virus-mediated expression of a more light-sensitive ChR2 variant in spiral ganglion neurons reduced the amount of light required for responses and allowed neuronal spiking up to 60 Hz.
Virus-mediated expression of a ChR2 variant with greater light sensitivity in SGNs reduced the amount of light required for responses and allowed neuronal spiking following stimulation up to 60 Hz.
Optogenetic stimulation of spiral ganglion neurons activated the auditory pathway.
Optogenetic stimulation of spiral ganglion neurons (SGNs) activated the auditory pathway, as demonstrated by recordings of single neuron and neuronal population responses.
Optogenetic tools allow rapid and reversible suppression of epileptic EEG activity upon photoactivation.
Finally, optogenetic tools allow rapid and reversible suppression of epileptic electroencephalography (EEG) activity upon photoactivation.
Optogenetic tools allow rapid and reversible suppression of epileptic EEG activity upon photoactivation.
Finally, optogenetic tools allow rapid and reversible suppression of epileptic electroencephalography (EEG) activity upon photoactivation.
Optogenetic tools allow rapid and reversible suppression of epileptic EEG activity upon photoactivation.
Finally, optogenetic tools allow rapid and reversible suppression of epileptic electroencephalography (EEG) activity upon photoactivation.
Optogenetic tools allow rapid and reversible suppression of epileptic EEG activity upon photoactivation.
Finally, optogenetic tools allow rapid and reversible suppression of epileptic electroencephalography (EEG) activity upon photoactivation.
Optogenetic tools allow rapid and reversible suppression of epileptic EEG activity upon photoactivation.
Finally, optogenetic tools allow rapid and reversible suppression of epileptic electroencephalography (EEG) activity upon photoactivation.
Optogenetic tools allow rapid and reversible suppression of epileptic EEG activity upon photoactivation.
Finally, optogenetic tools allow rapid and reversible suppression of epileptic electroencephalography (EEG) activity upon photoactivation.
Optogenetic tools allow rapid and reversible suppression of epileptic EEG activity upon photoactivation.
Finally, optogenetic tools allow rapid and reversible suppression of epileptic electroencephalography (EEG) activity upon photoactivation.
Opsins allow selective activation of excitatory neurons and inhibitory interneurons, including interneuron subclasses, to study activity patterns in distinct brain states and dissect roles in synchrony and seizures.
Opsins allow selective activation of excitatory neurons and inhibitory interneurons, or subclasses of interneurons, to study their activity patterns in distinct brain-states in vivo and to dissect their role in generation of synchrony and seizures.
Opsins allow selective activation of excitatory neurons and inhibitory interneurons, including interneuron subclasses, to study activity patterns in distinct brain states and dissect roles in synchrony and seizures.
Opsins allow selective activation of excitatory neurons and inhibitory interneurons, or subclasses of interneurons, to study their activity patterns in distinct brain-states in vivo and to dissect their role in generation of synchrony and seizures.
Opsins allow selective activation of excitatory neurons and inhibitory interneurons, including interneuron subclasses, to study activity patterns in distinct brain states and dissect roles in synchrony and seizures.
Opsins allow selective activation of excitatory neurons and inhibitory interneurons, or subclasses of interneurons, to study their activity patterns in distinct brain-states in vivo and to dissect their role in generation of synchrony and seizures.
Opsins allow selective activation of excitatory neurons and inhibitory interneurons, including interneuron subclasses, to study activity patterns in distinct brain states and dissect roles in synchrony and seizures.
Opsins allow selective activation of excitatory neurons and inhibitory interneurons, or subclasses of interneurons, to study their activity patterns in distinct brain-states in vivo and to dissect their role in generation of synchrony and seizures.
Opsins allow selective activation of excitatory neurons and inhibitory interneurons, including interneuron subclasses, to study activity patterns in distinct brain states and dissect roles in synchrony and seizures.
Opsins allow selective activation of excitatory neurons and inhibitory interneurons, or subclasses of interneurons, to study their activity patterns in distinct brain-states in vivo and to dissect their role in generation of synchrony and seizures.
Opsins allow selective activation of excitatory neurons and inhibitory interneurons, including interneuron subclasses, to study activity patterns in distinct brain states and dissect roles in synchrony and seizures.
Opsins allow selective activation of excitatory neurons and inhibitory interneurons, or subclasses of interneurons, to study their activity patterns in distinct brain-states in vivo and to dissect their role in generation of synchrony and seizures.
Opsins allow selective activation of excitatory neurons and inhibitory interneurons, including interneuron subclasses, to study activity patterns in distinct brain states and dissect roles in synchrony and seizures.
Opsins allow selective activation of excitatory neurons and inhibitory interneurons, or subclasses of interneurons, to study their activity patterns in distinct brain-states in vivo and to dissect their role in generation of synchrony and seizures.
A light-activated transgene system is a more recently developed optogenetic tool discussed by the source.
and a light-activated transgene system.
Opsin/G protein-coupled receptor chimeric molecules are more recently developed optogenetic tools discussed by the source.
In addition, we describe more recently developed tools such as opsin/G protein-coupled receptor chimeric molecules
ChR2 is the photosensitive protein most commonly employed in optogenetics.
We focus especially on the channelrhodopsin protein ChR2, the photosensitive protein most commonly employed in optogenetics.
Optogenetic stimulation allows arbitrary stimulation of opsin-expressing brain regions, enabling brain mapping independent of behavior or sensory processing.
The optogenetic seizure-like afterdischarge model was advantageous for reproducibility and artifact-free electrophysiological observations.
Hippocampal photostimulation of ChR2-expressing rodents successfully induced seizure-like afterdischarges in both transgenic rats and wild-type rats transfected with AAV vectors carrying ChR2.
With KENGE-tet-based optogenetic mice, in vivo manipulation of nonexcitable glial cells is possible in addition to neurons.
In addition to neurons, manipulations of the activities of nonexcitable glial cells in vivo have also proved possible.
A recent report using KENGE-tet found that selective optogenetic stimulation of glia can lead to glutamate release, synaptic plasticity, and accelerated cerebellar-modulated motor learning.
A recent report that used the KENGE-tet has shown that the selective optogenetic stimulation of glia can lead to the release of glutamate as a gliotransmitter, synaptic plasticity, and the acceleration of cerebellar-modulated motor learning.
Channelrhodopsin-2 can be genetically expressed in mammalian brain cells to allow optical control of cell activity.
channelrhodopsin-2, that are found in microorganisms can now be genetically expressed in mammalian brain cells, allowing experimenters to optically control cell activity at will
Red-shifted organic voltage-sensitive dyes permit high temporal resolution imaging that is spectrally separated from Channelrhodopsin-2 activation.
Long-term in vivo optogenetic studies in this review context rely on implantable optical-fiber strategies for light delivery.
A single induced afterdischarge produced c-Fos evidence of neuronal activation across the entire hippocampus.
VSD maps stimulated by ChR2 were dependent on intracortical synaptic activity and reflected circuits used for sensory processing.
The computational modeling technique was demonstrated using channelrhodopsin-2 and halorhodopsin as examples of optical activation and silencing mechanisms.
It was demonstrated on the example of a two classical mechanisms for cells optical activation and silencing: channelrhodopsin-2 (ChR2) and halorhodopsin (NpHR).
The computational modeling technique was demonstrated using channelrhodopsin-2 and halorhodopsin as examples of optical activation and silencing mechanisms.
It was demonstrated on the example of a two classical mechanisms for cells optical activation and silencing: channelrhodopsin-2 (ChR2) and halorhodopsin (NpHR).
The computational modeling technique was demonstrated using channelrhodopsin-2 and halorhodopsin as examples of optical activation and silencing mechanisms.
It was demonstrated on the example of a two classical mechanisms for cells optical activation and silencing: channelrhodopsin-2 (ChR2) and halorhodopsin (NpHR).
The computational modeling technique was demonstrated using channelrhodopsin-2 and halorhodopsin as examples of optical activation and silencing mechanisms.
It was demonstrated on the example of a two classical mechanisms for cells optical activation and silencing: channelrhodopsin-2 (ChR2) and halorhodopsin (NpHR).
The computational modeling technique was demonstrated using channelrhodopsin-2 and halorhodopsin as examples of optical activation and silencing mechanisms.
It was demonstrated on the example of a two classical mechanisms for cells optical activation and silencing: channelrhodopsin-2 (ChR2) and halorhodopsin (NpHR).
The computational modeling technique was demonstrated using channelrhodopsin-2 and halorhodopsin as examples of optical activation and silencing mechanisms.
It was demonstrated on the example of a two classical mechanisms for cells optical activation and silencing: channelrhodopsin-2 (ChR2) and halorhodopsin (NpHR).
The computational modeling technique was demonstrated using channelrhodopsin-2 and halorhodopsin as examples of optical activation and silencing mechanisms.
It was demonstrated on the example of a two classical mechanisms for cells optical activation and silencing: channelrhodopsin-2 (ChR2) and halorhodopsin (NpHR).
Projection-specific optogenetic manipulation is presented as a central strategy for dissecting stress-related circuitry.
KENGE-tet generated a repertoire of transgenic mice expressing a highly light-sensitive channelrhodopsin-2 mutant at levels sufficient to stimulate multiple cell types.
KENGE-tet method, which has generated a repertoire of transgenic mice that express levels of the highly light-sensitive channelrhodopsin-2 mutant that are sufficient to stimulate multiple cell types
The paper presents a generalised computational modeling technique for various optogenetic mechanisms implemented in the NEURON simulation environment.
Here we present a generalised computational modeling technique for various types of optogenetic mechanisms, which was implemented in the NEURON simulation environment.
The paper presents a generalised computational modeling technique for various optogenetic mechanisms implemented in the NEURON simulation environment.
Here we present a generalised computational modeling technique for various types of optogenetic mechanisms, which was implemented in the NEURON simulation environment.
The paper presents a generalised computational modeling technique for various optogenetic mechanisms implemented in the NEURON simulation environment.
Here we present a generalised computational modeling technique for various types of optogenetic mechanisms, which was implemented in the NEURON simulation environment.
The paper presents a generalised computational modeling technique for various optogenetic mechanisms implemented in the NEURON simulation environment.
Here we present a generalised computational modeling technique for various types of optogenetic mechanisms, which was implemented in the NEURON simulation environment.
The paper presents a generalised computational modeling technique for various optogenetic mechanisms implemented in the NEURON simulation environment.
Here we present a generalised computational modeling technique for various types of optogenetic mechanisms, which was implemented in the NEURON simulation environment.
The paper presents a generalised computational modeling technique for various optogenetic mechanisms implemented in the NEURON simulation environment.
Here we present a generalised computational modeling technique for various types of optogenetic mechanisms, which was implemented in the NEURON simulation environment.
The paper presents a generalised computational modeling technique for various optogenetic mechanisms implemented in the NEURON simulation environment.
Here we present a generalised computational modeling technique for various types of optogenetic mechanisms, which was implemented in the NEURON simulation environment.
The paper developed a novel in vivo optogenetic model of seizure-like afterdischarge in the rodent hippocampus.
Granger causality analysis of hippocampal LFPs showed bidirectional but asymmetric signal flow along the septo-temporal axis during seizure-like afterdischarges.
Pulse frequencies of 10 and 20 Hz with a 0.05 duty ratio were optimal for afterdischarge induction.
Opsin-based activation allows investigation of connectivity with spatial resolution on the order of single neurons and temporal resolution on the order of milliseconds.
In the modeled layer 5 cortical pyramidal neuron, whole-cell illumination of halorhodopsin most effectively hyperpolarizes the neuron and can silence the cell even when driving input is present.
We show that whole-cell illumination of halorhodopsin most effectively hyperpolarizes the neuron and is able to silence the cell even when driving input is present.
In the modeled layer 5 cortical pyramidal neuron, whole-cell illumination of halorhodopsin most effectively hyperpolarizes the neuron and can silence the cell even when driving input is present.
We show that whole-cell illumination of halorhodopsin most effectively hyperpolarizes the neuron and is able to silence the cell even when driving input is present.
In the modeled layer 5 cortical pyramidal neuron, whole-cell illumination of halorhodopsin most effectively hyperpolarizes the neuron and can silence the cell even when driving input is present.
We show that whole-cell illumination of halorhodopsin most effectively hyperpolarizes the neuron and is able to silence the cell even when driving input is present.
In the modeled layer 5 cortical pyramidal neuron, whole-cell illumination of halorhodopsin most effectively hyperpolarizes the neuron and can silence the cell even when driving input is present.
We show that whole-cell illumination of halorhodopsin most effectively hyperpolarizes the neuron and is able to silence the cell even when driving input is present.
In the modeled layer 5 cortical pyramidal neuron, whole-cell illumination of halorhodopsin most effectively hyperpolarizes the neuron and can silence the cell even when driving input is present.
We show that whole-cell illumination of halorhodopsin most effectively hyperpolarizes the neuron and is able to silence the cell even when driving input is present.
In the modeled layer 5 cortical pyramidal neuron, whole-cell illumination of halorhodopsin most effectively hyperpolarizes the neuron and can silence the cell even when driving input is present.
We show that whole-cell illumination of halorhodopsin most effectively hyperpolarizes the neuron and is able to silence the cell even when driving input is present.
When channelrhodopsin-2 and halorhodopsin are concurrently active, the relative location of each illumination determines whether the neural response is modulated toward depolarization.
However, when channelrhodopsin-2 and halorhodopsin are concurrently active, the relative location of each illumination determines whether the response is modulated with a balance towards depolarization.
When channelrhodopsin-2 and halorhodopsin are concurrently active, the relative location of each illumination determines whether the neural response is modulated toward depolarization.
However, when channelrhodopsin-2 and halorhodopsin are concurrently active, the relative location of each illumination determines whether the response is modulated with a balance towards depolarization.
When channelrhodopsin-2 and halorhodopsin are concurrently active, the relative location of each illumination determines whether the neural response is modulated toward depolarization.
However, when channelrhodopsin-2 and halorhodopsin are concurrently active, the relative location of each illumination determines whether the response is modulated with a balance towards depolarization.
When channelrhodopsin-2 and halorhodopsin are concurrently active, the relative location of each illumination determines whether the neural response is modulated toward depolarization.
However, when channelrhodopsin-2 and halorhodopsin are concurrently active, the relative location of each illumination determines whether the response is modulated with a balance towards depolarization.
When channelrhodopsin-2 and halorhodopsin are concurrently active, the relative location of each illumination determines whether the neural response is modulated toward depolarization.
However, when channelrhodopsin-2 and halorhodopsin are concurrently active, the relative location of each illumination determines whether the response is modulated with a balance towards depolarization.
When channelrhodopsin-2 and halorhodopsin are concurrently active, the relative location of each illumination determines whether the neural response is modulated toward depolarization.
However, when channelrhodopsin-2 and halorhodopsin are concurrently active, the relative location of each illumination determines whether the response is modulated with a balance towards depolarization.
State-space analysis of causality and coherence identified three discrete states of seizure-like afterdischarge: resting, initiation with dominant septal-to-temporal causality, and termination with dominant temporal-to-septal causality.
The review discusses promoter-based targeting such as CaMKIIα to enrich opsin delivery to selected neuronal populations.
The review discusses both excitatory and inhibitory optogenetic actuators for causal manipulation of stress-related neural circuits.
Channelrhodopsin-2 was used as an optogenetic tag to identify PV+ and PV- neurons in vivo in transgenic mice.
We used channelrhodopsin-2 (ChR2) as an optogenetic tag to identify PV+ and PV- neurons in vivo in transgenic mice.
A single 200 ms light pulse delivered after each self-initiated nose poke was sufficient to cause operant reinforcement.
When a single light pulse followed each self-initiated nose poke, it was sufficient in itself to cause operant reinforcement.
Optical stimulation of genetically targeted VTA dopamine neurons increased locomotion and contralateral rotations when delivered according to a predetermined pattern in separate sessions.
when optical stimulation was delivered in separate sessions according to a predetermined pattern, it increased locomotion and contralateral rotations
A bicistronic expression cassette with GFP helps identify the correct expression pattern.
A bicistronic expression cassette with GFP helps to identify the correct expression pattern
A bicistronic expression cassette with GFP helps identify the correct expression pattern.
A bicistronic expression cassette with GFP helps to identify the correct expression pattern
A bicistronic expression cassette with GFP helps identify the correct expression pattern.
A bicistronic expression cassette with GFP helps to identify the correct expression pattern
A bicistronic expression cassette with GFP helps identify the correct expression pattern.
A bicistronic expression cassette with GFP helps to identify the correct expression pattern
A bicistronic expression cassette with GFP helps identify the correct expression pattern.
A bicistronic expression cassette with GFP helps to identify the correct expression pattern
A bicistronic expression cassette with GFP helps identify the correct expression pattern.
A bicistronic expression cassette with GFP helps to identify the correct expression pattern
A bicistronic expression cassette with GFP helps identify the correct expression pattern.
A bicistronic expression cassette with GFP helps to identify the correct expression pattern
Optically induced operant and locomotor behaviors were tightly correlated with the number of VTA dopamine neurons expressing ChR2.
All three of the optically induced operant and locomotor behaviors were tightly correlated with the number of VTA dopamine neurons that expressed ChR2
Success of the conditional single-neuron Channelrhodopsin-2 expression method depends on precise knowledge of individual promoter expression patterns and on relative expression levels of recombinase and Channelrhodopsin-2.
Success of this method depends on precise knowledge of the individual promoters' expression patterns and on relative expression levels of recombinase and ChR2
Success of the conditional single-neuron Channelrhodopsin-2 expression method depends on precise knowledge of individual promoter expression patterns and on relative expression levels of recombinase and Channelrhodopsin-2.
Success of this method depends on precise knowledge of the individual promoters' expression patterns and on relative expression levels of recombinase and ChR2
Success of the conditional single-neuron Channelrhodopsin-2 expression method depends on precise knowledge of individual promoter expression patterns and on relative expression levels of recombinase and Channelrhodopsin-2.
Success of this method depends on precise knowledge of the individual promoters' expression patterns and on relative expression levels of recombinase and ChR2
Success of the conditional single-neuron Channelrhodopsin-2 expression method depends on precise knowledge of individual promoter expression patterns and on relative expression levels of recombinase and Channelrhodopsin-2.
Success of this method depends on precise knowledge of the individual promoters' expression patterns and on relative expression levels of recombinase and ChR2
Success of the conditional single-neuron Channelrhodopsin-2 expression method depends on precise knowledge of individual promoter expression patterns and on relative expression levels of recombinase and Channelrhodopsin-2.
Success of this method depends on precise knowledge of the individual promoters' expression patterns and on relative expression levels of recombinase and ChR2
Success of the conditional single-neuron Channelrhodopsin-2 expression method depends on precise knowledge of individual promoter expression patterns and on relative expression levels of recombinase and Channelrhodopsin-2.
Success of this method depends on precise knowledge of the individual promoters' expression patterns and on relative expression levels of recombinase and ChR2
The authors show specific expression in the AVA reverse command neurons and the aversive polymodal sensory ASH neurons.
Here we show specific expression in the AVA reverse command neurons and the aversive polymodal sensory ASH neurons
The authors show specific expression in the AVA reverse command neurons and the aversive polymodal sensory ASH neurons.
Here we show specific expression in the AVA reverse command neurons and the aversive polymodal sensory ASH neurons
The authors show specific expression in the AVA reverse command neurons and the aversive polymodal sensory ASH neurons.
Here we show specific expression in the AVA reverse command neurons and the aversive polymodal sensory ASH neurons
The authors show specific expression in the AVA reverse command neurons and the aversive polymodal sensory ASH neurons.
Here we show specific expression in the AVA reverse command neurons and the aversive polymodal sensory ASH neurons
The authors show specific expression in the AVA reverse command neurons and the aversive polymodal sensory ASH neurons.
Here we show specific expression in the AVA reverse command neurons and the aversive polymodal sensory ASH neurons
The authors show specific expression in the AVA reverse command neurons and the aversive polymodal sensory ASH neurons.
Here we show specific expression in the AVA reverse command neurons and the aversive polymodal sensory ASH neurons
ChR2 responds to blue light to induce neuronal firing via cation influx.
ChR2 responds to blue light to induce neuronal firing via cation influx
NpHR responds to yellow light to inhibit neuronal activity via chloride influx.
NpHR responds to yellow light to inhibit neuronal activity via Cl- influx
The authors used Cre or FLP recombinases with conditional Channelrhodopsin-2 expression at the intersection of two promoter expression domains to restrict expression to the cell of interest.
we adopted the use of Cre or FLP recombinases and conditional ChR2 expression at the intersection of two promoter expression domains, i.e. in the cell of interest only
The authors used Cre or FLP recombinases with conditional Channelrhodopsin-2 expression at the intersection of two promoter expression domains to restrict expression to the cell of interest.
we adopted the use of Cre or FLP recombinases and conditional ChR2 expression at the intersection of two promoter expression domains, i.e. in the cell of interest only
The authors used Cre or FLP recombinases with conditional Channelrhodopsin-2 expression at the intersection of two promoter expression domains to restrict expression to the cell of interest.
we adopted the use of Cre or FLP recombinases and conditional ChR2 expression at the intersection of two promoter expression domains, i.e. in the cell of interest only
The authors used Cre or FLP recombinases with conditional Channelrhodopsin-2 expression at the intersection of two promoter expression domains to restrict expression to the cell of interest.
we adopted the use of Cre or FLP recombinases and conditional ChR2 expression at the intersection of two promoter expression domains, i.e. in the cell of interest only
The authors used Cre or FLP recombinases with conditional Channelrhodopsin-2 expression at the intersection of two promoter expression domains to restrict expression to the cell of interest.
we adopted the use of Cre or FLP recombinases and conditional ChR2 expression at the intersection of two promoter expression domains, i.e. in the cell of interest only
The authors used Cre or FLP recombinases with conditional Channelrhodopsin-2 expression at the intersection of two promoter expression domains to restrict expression to the cell of interest.
we adopted the use of Cre or FLP recombinases and conditional ChR2 expression at the intersection of two promoter expression domains, i.e. in the cell of interest only
In source material connected to this review, ChR2 and NpHR are explicit optogenetic actuators used to interrogate dopamine circuits, while FSCV is an explicit paired measurement method for dopamine release dynamics.
Explicitly supported related components/tools include ChR2, NpHR, fast-scan cyclic voltammetry (FSCV), TH-Cre, DAT-Cre, and recombinase-driver rat lines.
The source synthesizes early optogenetic circuit-dissection studies of emotional valence and motivated behaviors, emphasizing ChR2, NpHR/eNpHR3.0, and projection-specific manipulations.
The review synthesizes early optogenetic circuit-dissection work across mesolimbic dopamine, striatum, hypothalamus, and amygdala, emphasizing tools such as ChR2 and NpHR/eNpHR3.0 and projection-specific manipulations.
A 200 ms optogenetic activation of genetically targeted VTA dopamine neurons was sufficient to mimic transient natural reward-associated dopamine activation.
We mimicked the transient activation of dopamine neurons that occurs in response to natural reward by applying a light pulse of 200 ms in VTA.
Selective genetic targeting is a central enabling component in dopamine optogenetics, with TH-Cre, DAT-Cre, and recombinase-driver rat lines identified as relevant targeting tools in source material connected to this review.
Explicitly supported related components/tools include ChR2, NpHR, fast-scan cyclic voltammetry (FSCV), TH-Cre, DAT-Cre, and recombinase-driver rat lines.
Channelrhodopsin-2 is presented in the supplied evidence scaffold as an optogenetic actuator enabling causal circuit perturbation in studies aligned to this review's scope.
Channelrhodopsin-2 and PAC α expressed in individual olfactory receptor neurons of Drosophila larvae allow stimulation of individual receptor neurons by light.
Both channelrhodopsin-2 and the photosensitive adenylyl cyclase PAC α in individual olfactory receptor neurons (ORNs) of the olfactory system of Drosophila larvae allows stimulating individual receptor neurons by light.
The reviewed remote-control tools differ in effect direction, onset and offset kinetics, spatial resolution, and invasiveness.
None of the reviewed neuronal remote-control tools is perfect, and each has advantages and disadvantages.
The reviewed tools use light, peptides, and small molecules to primarily activate ion channels and GPCRs, thereby activating or inhibiting neuronal firing.
Remote bidirectional manipulation of neuronal electrical and chemical signaling with high spatiotemporal precision is presented as an ideal approach for linking neural activity to behavior.
The review compares channelrhodopsin variants using seven key properties that influence their effectiveness as research tools: conductance, selectivity, kinetics, desensitization, light sensitivity, spectral response, and membrane trafficking.
In this review, the seven following key properties of ChRs that have significant influences on their effectiveness as research tools are examined: conductance, selectivity, kinetics, desensitization, light sensitivity, spectral response and membrane trafficking.
The review compares channelrhodopsin variants using seven key properties that influence their effectiveness as research tools: conductance, selectivity, kinetics, desensitization, light sensitivity, spectral response, and membrane trafficking.
In this review, the seven following key properties of ChRs that have significant influences on their effectiveness as research tools are examined: conductance, selectivity, kinetics, desensitization, light sensitivity, spectral response and membrane trafficking.
The review compares channelrhodopsin variants using seven key properties that influence their effectiveness as research tools: conductance, selectivity, kinetics, desensitization, light sensitivity, spectral response, and membrane trafficking.
In this review, the seven following key properties of ChRs that have significant influences on their effectiveness as research tools are examined: conductance, selectivity, kinetics, desensitization, light sensitivity, spectral response and membrane trafficking.
The review compares channelrhodopsin variants using seven key properties that influence their effectiveness as research tools: conductance, selectivity, kinetics, desensitization, light sensitivity, spectral response, and membrane trafficking.
In this review, the seven following key properties of ChRs that have significant influences on their effectiveness as research tools are examined: conductance, selectivity, kinetics, desensitization, light sensitivity, spectral response and membrane trafficking.
The review compares channelrhodopsin variants using seven key properties that influence their effectiveness as research tools: conductance, selectivity, kinetics, desensitization, light sensitivity, spectral response, and membrane trafficking.
In this review, the seven following key properties of ChRs that have significant influences on their effectiveness as research tools are examined: conductance, selectivity, kinetics, desensitization, light sensitivity, spectral response and membrane trafficking.
The review compares channelrhodopsin variants using seven key properties that influence their effectiveness as research tools: conductance, selectivity, kinetics, desensitization, light sensitivity, spectral response, and membrane trafficking.
In this review, the seven following key properties of ChRs that have significant influences on their effectiveness as research tools are examined: conductance, selectivity, kinetics, desensitization, light sensitivity, spectral response and membrane trafficking.
The review compares channelrhodopsin variants using seven key properties that influence their effectiveness as research tools: conductance, selectivity, kinetics, desensitization, light sensitivity, spectral response, and membrane trafficking.
In this review, the seven following key properties of ChRs that have significant influences on their effectiveness as research tools are examined: conductance, selectivity, kinetics, desensitization, light sensitivity, spectral response and membrane trafficking.
Chimeragenesis, mutagenesis, and bioinformatic approaches have introduced additional channelrhodopsin variants including ChR2/H134R, ChETA, VChR1, VChR2, ChR2/C128X/D156A, ChD, ChEF, and I170V.
Subsequent chimeragenesis, mutagenesis and bioinformatic approaches have introduced additional ChR variants, such as channelrhodopsin-2 with H134R mutation (ChR2/H134R), channelrhodopsin-2 with E123T mutation (ChETA), Volvox carteri channelrhodopsin-1 (VChR1), Volvox carteri channelrhodopsin-2 (VChR2), channelrhodopsin-2 with C128 or D156A mutations (ChR2/C128X/D156A), chimera D (ChD), chimera EF (ChEF) and chimera EF with I170V mutation (I170V).
Chimeragenesis, mutagenesis, and bioinformatic approaches have introduced additional channelrhodopsin variants including ChR2/H134R, ChETA, VChR1, VChR2, ChR2/C128X/D156A, ChD, ChEF, and I170V.
Subsequent chimeragenesis, mutagenesis and bioinformatic approaches have introduced additional ChR variants, such as channelrhodopsin-2 with H134R mutation (ChR2/H134R), channelrhodopsin-2 with E123T mutation (ChETA), Volvox carteri channelrhodopsin-1 (VChR1), Volvox carteri channelrhodopsin-2 (VChR2), channelrhodopsin-2 with C128 or D156A mutations (ChR2/C128X/D156A), chimera D (ChD), chimera EF (ChEF) and chimera EF with I170V mutation (I170V).
Chimeragenesis, mutagenesis, and bioinformatic approaches have introduced additional channelrhodopsin variants including ChR2/H134R, ChETA, VChR1, VChR2, ChR2/C128X/D156A, ChD, ChEF, and I170V.
Subsequent chimeragenesis, mutagenesis and bioinformatic approaches have introduced additional ChR variants, such as channelrhodopsin-2 with H134R mutation (ChR2/H134R), channelrhodopsin-2 with E123T mutation (ChETA), Volvox carteri channelrhodopsin-1 (VChR1), Volvox carteri channelrhodopsin-2 (VChR2), channelrhodopsin-2 with C128 or D156A mutations (ChR2/C128X/D156A), chimera D (ChD), chimera EF (ChEF) and chimera EF with I170V mutation (I170V).
Chimeragenesis, mutagenesis, and bioinformatic approaches have introduced additional channelrhodopsin variants including ChR2/H134R, ChETA, VChR1, VChR2, ChR2/C128X/D156A, ChD, ChEF, and I170V.
Subsequent chimeragenesis, mutagenesis and bioinformatic approaches have introduced additional ChR variants, such as channelrhodopsin-2 with H134R mutation (ChR2/H134R), channelrhodopsin-2 with E123T mutation (ChETA), Volvox carteri channelrhodopsin-1 (VChR1), Volvox carteri channelrhodopsin-2 (VChR2), channelrhodopsin-2 with C128 or D156A mutations (ChR2/C128X/D156A), chimera D (ChD), chimera EF (ChEF) and chimera EF with I170V mutation (I170V).
Chimeragenesis, mutagenesis, and bioinformatic approaches have introduced additional channelrhodopsin variants including ChR2/H134R, ChETA, VChR1, VChR2, ChR2/C128X/D156A, ChD, ChEF, and I170V.
Subsequent chimeragenesis, mutagenesis and bioinformatic approaches have introduced additional ChR variants, such as channelrhodopsin-2 with H134R mutation (ChR2/H134R), channelrhodopsin-2 with E123T mutation (ChETA), Volvox carteri channelrhodopsin-1 (VChR1), Volvox carteri channelrhodopsin-2 (VChR2), channelrhodopsin-2 with C128 or D156A mutations (ChR2/C128X/D156A), chimera D (ChD), chimera EF (ChEF) and chimera EF with I170V mutation (I170V).
Chimeragenesis, mutagenesis, and bioinformatic approaches have introduced additional channelrhodopsin variants including ChR2/H134R, ChETA, VChR1, VChR2, ChR2/C128X/D156A, ChD, ChEF, and I170V.
Subsequent chimeragenesis, mutagenesis and bioinformatic approaches have introduced additional ChR variants, such as channelrhodopsin-2 with H134R mutation (ChR2/H134R), channelrhodopsin-2 with E123T mutation (ChETA), Volvox carteri channelrhodopsin-1 (VChR1), Volvox carteri channelrhodopsin-2 (VChR2), channelrhodopsin-2 with C128 or D156A mutations (ChR2/C128X/D156A), chimera D (ChD), chimera EF (ChEF) and chimera EF with I170V mutation (I170V).
Chimeragenesis, mutagenesis, and bioinformatic approaches have introduced additional channelrhodopsin variants including ChR2/H134R, ChETA, VChR1, VChR2, ChR2/C128X/D156A, ChD, ChEF, and I170V.
Subsequent chimeragenesis, mutagenesis and bioinformatic approaches have introduced additional ChR variants, such as channelrhodopsin-2 with H134R mutation (ChR2/H134R), channelrhodopsin-2 with E123T mutation (ChETA), Volvox carteri channelrhodopsin-1 (VChR1), Volvox carteri channelrhodopsin-2 (VChR2), channelrhodopsin-2 with C128 or D156A mutations (ChR2/C128X/D156A), chimera D (ChD), chimera EF (ChEF) and chimera EF with I170V mutation (I170V).
Channelrhodopsins are light-activated channels from algae that function as fast sensors to visible light for phototaxis.
Channelrhodopsins (ChRs) are light-activated channels from algae that provide these organisms with fast sensors to visible light for phototaxis.
Channelrhodopsins are light-activated channels from algae that function as fast sensors to visible light for phototaxis.
Channelrhodopsins (ChRs) are light-activated channels from algae that provide these organisms with fast sensors to visible light for phototaxis.
Channelrhodopsins are light-activated channels from algae that function as fast sensors to visible light for phototaxis.
Channelrhodopsins (ChRs) are light-activated channels from algae that provide these organisms with fast sensors to visible light for phototaxis.
Channelrhodopsins are light-activated channels from algae that function as fast sensors to visible light for phototaxis.
Channelrhodopsins (ChRs) are light-activated channels from algae that provide these organisms with fast sensors to visible light for phototaxis.
Channelrhodopsins are light-activated channels from algae that function as fast sensors to visible light for phototaxis.
Channelrhodopsins (ChRs) are light-activated channels from algae that provide these organisms with fast sensors to visible light for phototaxis.
Channelrhodopsins are light-activated channels from algae that function as fast sensors to visible light for phototaxis.
Channelrhodopsins (ChRs) are light-activated channels from algae that provide these organisms with fast sensors to visible light for phototaxis.
Channelrhodopsins are light-activated channels from algae that function as fast sensors to visible light for phototaxis.
Channelrhodopsins (ChRs) are light-activated channels from algae that provide these organisms with fast sensors to visible light for phototaxis.
The review summarizes valuable qualities and deficits of each channelrhodopsin variant and discusses optimal uses and potential future improvements of channelrhodopsins as optogenetic tools.
Using this information, valuable qualities and deficits of each ChR variant are summarized. Optimal uses and potential future improvements of ChRs as optogenetic tools are also discussed.
The review summarizes valuable qualities and deficits of each channelrhodopsin variant and discusses optimal uses and potential future improvements of channelrhodopsins as optogenetic tools.
Using this information, valuable qualities and deficits of each ChR variant are summarized. Optimal uses and potential future improvements of ChRs as optogenetic tools are also discussed.
The review summarizes valuable qualities and deficits of each channelrhodopsin variant and discusses optimal uses and potential future improvements of channelrhodopsins as optogenetic tools.
Using this information, valuable qualities and deficits of each ChR variant are summarized. Optimal uses and potential future improvements of ChRs as optogenetic tools are also discussed.
The review summarizes valuable qualities and deficits of each channelrhodopsin variant and discusses optimal uses and potential future improvements of channelrhodopsins as optogenetic tools.
Using this information, valuable qualities and deficits of each ChR variant are summarized. Optimal uses and potential future improvements of ChRs as optogenetic tools are also discussed.
The review summarizes valuable qualities and deficits of each channelrhodopsin variant and discusses optimal uses and potential future improvements of channelrhodopsins as optogenetic tools.
Using this information, valuable qualities and deficits of each ChR variant are summarized. Optimal uses and potential future improvements of ChRs as optogenetic tools are also discussed.
The review summarizes valuable qualities and deficits of each channelrhodopsin variant and discusses optimal uses and potential future improvements of channelrhodopsins as optogenetic tools.
Using this information, valuable qualities and deficits of each ChR variant are summarized. Optimal uses and potential future improvements of ChRs as optogenetic tools are also discussed.
The review summarizes valuable qualities and deficits of each channelrhodopsin variant and discusses optimal uses and potential future improvements of channelrhodopsins as optogenetic tools.
Using this information, valuable qualities and deficits of each ChR variant are summarized. Optimal uses and potential future improvements of ChRs as optogenetic tools are also discussed.
Channelrhodopsin-2 has been used as a research tool to depolarize membranes of excitable cells with light.
Since its discovery, channelrhodopsin-2 (ChR2) has been used as a research tool to depolarize membranes of excitable cells with light.
Channelrhodopsin-2 has been used as a research tool to depolarize membranes of excitable cells with light.
Since its discovery, channelrhodopsin-2 (ChR2) has been used as a research tool to depolarize membranes of excitable cells with light.
Channelrhodopsin-2 has been used as a research tool to depolarize membranes of excitable cells with light.
Since its discovery, channelrhodopsin-2 (ChR2) has been used as a research tool to depolarize membranes of excitable cells with light.
Channelrhodopsin-2 has been used as a research tool to depolarize membranes of excitable cells with light.
Since its discovery, channelrhodopsin-2 (ChR2) has been used as a research tool to depolarize membranes of excitable cells with light.
Channelrhodopsin-2 has been used as a research tool to depolarize membranes of excitable cells with light.
Since its discovery, channelrhodopsin-2 (ChR2) has been used as a research tool to depolarize membranes of excitable cells with light.
Channelrhodopsin-2 has been used as a research tool to depolarize membranes of excitable cells with light.
Since its discovery, channelrhodopsin-2 (ChR2) has been used as a research tool to depolarize membranes of excitable cells with light.
Channelrhodopsin-2 has been used as a research tool to depolarize membranes of excitable cells with light.
Since its discovery, channelrhodopsin-2 (ChR2) has been used as a research tool to depolarize membranes of excitable cells with light.
The study used a transgenic rat expressing ChR2 specifically in retinal ganglion cells under the regulation of a Thy-1.2 promoter.
by using a transgenic rat expressing ChR2 specifically in the RGCs under the regulation of a Thy-1.2 promoter
The study used a transgenic rat expressing ChR2 specifically in retinal ganglion cells under the regulation of a Thy-1.2 promoter.
by using a transgenic rat expressing ChR2 specifically in the RGCs under the regulation of a Thy-1.2 promoter
The study used a transgenic rat expressing ChR2 specifically in retinal ganglion cells under the regulation of a Thy-1.2 promoter.
by using a transgenic rat expressing ChR2 specifically in the RGCs under the regulation of a Thy-1.2 promoter
The study used a transgenic rat expressing ChR2 specifically in retinal ganglion cells under the regulation of a Thy-1.2 promoter.
by using a transgenic rat expressing ChR2 specifically in the RGCs under the regulation of a Thy-1.2 promoter
The study used a transgenic rat expressing ChR2 specifically in retinal ganglion cells under the regulation of a Thy-1.2 promoter.
by using a transgenic rat expressing ChR2 specifically in the RGCs under the regulation of a Thy-1.2 promoter
The study used a transgenic rat expressing ChR2 specifically in retinal ganglion cells under the regulation of a Thy-1.2 promoter.
by using a transgenic rat expressing ChR2 specifically in the RGCs under the regulation of a Thy-1.2 promoter
After degeneration of native photoreceptors, transgenic rats showed enhanced optomotor contrast sensitivity for low-spatial-frequency visual stimuli compared with wild-type-like baseline similarity.
Although the contrast sensitivities of the optomotor responses of transgenic rats were similar to those observed in the wild-type rats, they were enhanced for visual stimuli of low-spatial frequency after the degeneration of native photoreceptors.
After degeneration of native photoreceptors, transgenic rats showed enhanced optomotor contrast sensitivity for low-spatial-frequency visual stimuli compared with wild-type-like baseline similarity.
Although the contrast sensitivities of the optomotor responses of transgenic rats were similar to those observed in the wild-type rats, they were enhanced for visual stimuli of low-spatial frequency after the degeneration of native photoreceptors.
After degeneration of native photoreceptors, transgenic rats showed enhanced optomotor contrast sensitivity for low-spatial-frequency visual stimuli compared with wild-type-like baseline similarity.
Although the contrast sensitivities of the optomotor responses of transgenic rats were similar to those observed in the wild-type rats, they were enhanced for visual stimuli of low-spatial frequency after the degeneration of native photoreceptors.
After degeneration of native photoreceptors, transgenic rats showed enhanced optomotor contrast sensitivity for low-spatial-frequency visual stimuli compared with wild-type-like baseline similarity.
Although the contrast sensitivities of the optomotor responses of transgenic rats were similar to those observed in the wild-type rats, they were enhanced for visual stimuli of low-spatial frequency after the degeneration of native photoreceptors.
After degeneration of native photoreceptors, transgenic rats showed enhanced optomotor contrast sensitivity for low-spatial-frequency visual stimuli compared with wild-type-like baseline similarity.
Although the contrast sensitivities of the optomotor responses of transgenic rats were similar to those observed in the wild-type rats, they were enhanced for visual stimuli of low-spatial frequency after the degeneration of native photoreceptors.
After degeneration of native photoreceptors, transgenic rats showed enhanced optomotor contrast sensitivity for low-spatial-frequency visual stimuli compared with wild-type-like baseline similarity.
Although the contrast sensitivities of the optomotor responses of transgenic rats were similar to those observed in the wild-type rats, they were enhanced for visual stimuli of low-spatial frequency after the degeneration of native photoreceptors.
The results suggest that visual signals derived from ChR2-expressing retinal ganglion cells were reinterpreted by the brain to form behavior-related vision.
This result suggests that the visual signals derived from the ChR2-expressing RGCs were reinterpreted by the brain to form behavior-related vision.
The results suggest that visual signals derived from ChR2-expressing retinal ganglion cells were reinterpreted by the brain to form behavior-related vision.
This result suggests that the visual signals derived from the ChR2-expressing RGCs were reinterpreted by the brain to form behavior-related vision.
The results suggest that visual signals derived from ChR2-expressing retinal ganglion cells were reinterpreted by the brain to form behavior-related vision.
This result suggests that the visual signals derived from the ChR2-expressing RGCs were reinterpreted by the brain to form behavior-related vision.
The results suggest that visual signals derived from ChR2-expressing retinal ganglion cells were reinterpreted by the brain to form behavior-related vision.
This result suggests that the visual signals derived from the ChR2-expressing RGCs were reinterpreted by the brain to form behavior-related vision.
The results suggest that visual signals derived from ChR2-expressing retinal ganglion cells were reinterpreted by the brain to form behavior-related vision.
This result suggests that the visual signals derived from the ChR2-expressing RGCs were reinterpreted by the brain to form behavior-related vision.
The results suggest that visual signals derived from ChR2-expressing retinal ganglion cells were reinterpreted by the brain to form behavior-related vision.
This result suggests that the visual signals derived from the ChR2-expressing RGCs were reinterpreted by the brain to form behavior-related vision.
Channelrhodopsin-2 is described as a potentially useful optogenetic tool for restoring vision in photoreceptor degeneration.
Channelrhodopsin-2 (ChR2), one of the archea-type rhodopsins from green algae, is a potentially useful optogenetic tool for restoring vision in patients with photoreceptor degeneration, such as retinitis pigmentosa.
Channelrhodopsin-2 is described as a potentially useful optogenetic tool for restoring vision in photoreceptor degeneration.
Channelrhodopsin-2 (ChR2), one of the archea-type rhodopsins from green algae, is a potentially useful optogenetic tool for restoring vision in patients with photoreceptor degeneration, such as retinitis pigmentosa.
Channelrhodopsin-2 is described as a potentially useful optogenetic tool for restoring vision in photoreceptor degeneration.
Channelrhodopsin-2 (ChR2), one of the archea-type rhodopsins from green algae, is a potentially useful optogenetic tool for restoring vision in patients with photoreceptor degeneration, such as retinitis pigmentosa.
Channelrhodopsin-2 is described as a potentially useful optogenetic tool for restoring vision in photoreceptor degeneration.
Channelrhodopsin-2 (ChR2), one of the archea-type rhodopsins from green algae, is a potentially useful optogenetic tool for restoring vision in patients with photoreceptor degeneration, such as retinitis pigmentosa.
Channelrhodopsin-2 is described as a potentially useful optogenetic tool for restoring vision in photoreceptor degeneration.
Channelrhodopsin-2 (ChR2), one of the archea-type rhodopsins from green algae, is a potentially useful optogenetic tool for restoring vision in patients with photoreceptor degeneration, such as retinitis pigmentosa.
Channelrhodopsin-2 is described as a potentially useful optogenetic tool for restoring vision in photoreceptor degeneration.
Channelrhodopsin-2 (ChR2), one of the archea-type rhodopsins from green algae, is a potentially useful optogenetic tool for restoring vision in patients with photoreceptor degeneration, such as retinitis pigmentosa.
Approval Evidence
we demonstrate successful Cre-dependent recombination to selectively express channelrhodopsin-2 in Sp5C projection neurons
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This review traces the evolution of opsins in optogenetic therapies, highlighting advancements from early research on channelrhodopsin-2 (ChR2) to engineered variants addressing key limitations.
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Since the introduction of Channelrhodopsin-2 and phytochrome-based switches nearly 20 years ago
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mouse hearts expressing channelrhodopsin-2 (ChR2)
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Since the first demonstration of the millisecond neuromodulation ability of the channelrhodopsin-2 (ChR2)...
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These tools can offer low-energy and localized approaches due to the use of the transgenically expressed light gated cation channel Channelrhodopsin-2 (ChR2).
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Our first demonstration of the feasibility of such an approach involved expressing ChR2 in the retinal ganglion cells of blind mice; since then, optogenetic vision restoration has been demonstrated by using a variety of optogenetic tools, especially microbial channelrhodopsins (ChRs).
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Several explicitly supported related method/component names surfaced from the literature, including PACT, PARS, RIMS, electrophoretic tissue clearing (ETC), and Channelrhodopsin-2 (ChR2).
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The supplied web research summary lists Channelrhodopsin-2 (ChR2) as an explicitly supported related tool/component and a canonical optogenetic actuator relevant to the review's broader modality coverage.
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At the system-level, this requires construction of transgenic mice expressing ChR2 in their cardiomyocytes... ChR2-expressing cardiomyocytes show normal baseline and active excitable membrane and Ca2+ signaling properties and are sensitive even to ~1 ms light pulses.
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Channelrhodopsin is present in the source metadata concepts, and the web research summary lists Channelrhodopsin-2 (ChR2) as an explicitly supported component/tool name across sources connected to the review.
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The paper reports ex vivo optogenetic pacing in ChR2 hearts.
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Cre-dependent recombination successfully enabled selective channelrhodopsin-2 expression in Sp5C projection neurons.
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Plant dependence on light and the absence of retinal were barriers to establishing plant optogenetics until recent progress overcame these difficulties.
For a long time, the dependence of plant growth on light and the absence of retinal, the rhodopsin chromophore, prevented the establishment of plant optogenetics until recent progress overcame these difficulties.
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A combination of ElectroFluor 730p, X-Rhod-1, and ChR2 in mouse hearts enables simultaneous monitoring of transmembrane potential and cytosolic calcium while performing optogenetic manipulation with minimal crosstalk.
We here present a novel approach to simultaneously monitor transmembrane potential and cytosolic calcium, while also performing optogenetic manipulation. For this, we used the novel voltage-sensitive dye ElectroFluor 730p and the cytosolic calcium indicator X-Rhod-1 in mouse hearts expressing channelrhodopsin-2 (ChR2). By exploiting the isosbestic point of ElectroFluor 730p and avoiding the ChR2 activation spectrum, we here introduce a novel optical imaging and manipulation approach with minimal crosstalk.
Source:
Light input can be switched on or off and tuned in intensity and duration to provide noninvasive, spatiotemporally resolved control of cellular processes.
Light can be turned on or off, and adjusting its intensity and duration allows optogenetic fine-tuning of cellular processes in a noninvasive and spatiotemporally resolved manner.
Source:
Optogenetic tools have been widely successful in multiple model organisms but have been used relatively rarely in plants.
optogenetic tools have been applied in a variety of model organisms with enormous success, but rarely in plants
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Optogenetics uses natural or engineered photoreceptors in transgenic organisms to manipulate biological activities with light.
Optogenetics is a technique employing natural or genetically engineered photoreceptors in transgene organisms to manipulate biological activities with light.
Source:
Channelrhodopsin-2 is described as enabling millisecond neuromodulation.
Since the first demonstration of the millisecond neuromodulation ability of the channelrhodopsin-2 (ChR2)
Source:
Optogenetic technology progressed rapidly in basic life science research, especially neurobiology, after the first demonstration of ChR2-based millisecond neuromodulation.
the application of optogenetic technology in basic life science research has been rapidly progressed, especially in neurobiology
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Channelrhodopsin-2-based optogenetic approaches can offer low-energy and localized control.
Source:
ChR2 expression in retinal ganglion cells of blind mice served as an early feasibility demonstration for optogenetic vision restoration.
Our first demonstration of the feasibility of such an approach involved expressing ChR2 in the retinal ganglion cells of blind mice
Source:
The paper reports ex vivo optogenetic pacing in ChR2 hearts.
Source:
In cardiac physiology, optogenetics has mainly used optically controlled depolarizing ion channels to control heart rate and for optogenetic defibrillation.
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ChR2-expressing cardiomyocytes show normal baseline and active excitable membrane and Ca2+ signaling properties and are sensitive even to approximately 1 ms light pulses.
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Expression of the chosen optogenetic tool in cardiac cells requires gene introduction by viral transduction or coupling via spark cells at the single-cell level, and transgenic expression or in vivo adenoviral delivery at system level.
Source:
Named platforms aligned with the review's scope include LiGluR, LiGluN, LimGluR, optogating, ChR2, and Arch.
Primary papers for specific photoswitchable receptor platforms explicitly named in or strongly aligned with the review (LiGluR, LiGluN, LimGluR, optogating of P2X2)... Channelrhodopsin-2 (ChR2)... Arch.
Source:
Comparison with the ChR2 C128T structure reveals a direct connection of the DC gate to the central gate and suggests that the gating mechanism is affected by subtle tuning of Schiff base interactions.
Comparison with the C128T structure reveals a direct connection of the DC gate to the central gate and suggests how the gating mechanism is affected by subtle tuning of the Schiff base's interactions.
Source:
In ChR2, the retinal Schiff base controls and synchronizes three gates that separate the cavities.
Central is the retinal Schiff base that controls and synchronizes three gates that separate the cavities.
Source:
The ChR2 structure reveals two intracellular cavities and two extracellular cavities connected by extended hydrogen-bonding networks involving water molecules and side-chain residues.
The structure reveals two cavities on the intracellular side and two cavities on the extracellular side. They are connected by extended hydrogen-bonding networks involving water molecules and side-chain residues.
Source:
The DC gate in ChR2 comprises a water-mediated bond between C128 and D156 and interacts directly with the retinal Schiff base.
Separate from this network is the DC gate that comprises a water-mediated bond between C128 and D156 and interacts directly with the retinal Schiff base.
Source:
High-resolution structures were presented for ChR2 and the ChR2 C128T mutant.
We present high-resolution structures of ChR2 and the C128T mutant
Source:
Comparisons
Source-backed strengths
The supplied evidence states that ChR2 has been used as a research tool to depolarize membranes of excitable cells with light and is a prominent example for light-dependent activation of electrically excitable cells. Its use across optogenetics literature over nearly 20 years and the existence of structural work on ion conduction support that it is a well-established tool.
Source:
Comparison with the C128T structure reveals a direct connection of the DC gate to the central gate and suggests how the gating mechanism is affected by subtle tuning of the Schiff base's interactions.
Source:
In this review, the seven following key properties of ChRs that have significant influences on their effectiveness as research tools are examined: conductance, selectivity, kinetics, desensitization, light sensitivity, spectral response and membrane trafficking.
Source:
Subsequent chimeragenesis, mutagenesis and bioinformatic approaches have introduced additional ChR variants, such as channelrhodopsin-2 with H134R mutation (ChR2/H134R), channelrhodopsin-2 with E123T mutation (ChETA), Volvox carteri channelrhodopsin-1 (VChR1), Volvox carteri channelrhodopsin-2 (VChR2), channelrhodopsin-2 with C128 or D156A mutations (ChR2/C128X/D156A), chimera D (ChD), chimera EF (ChEF) and chimera EF with I170V mutation (I170V).
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