Toolkit/channelrhodopsins
channelrhodopsins
Also known as: channelrhodopsin, channelrhodopsins, Channelrhodopsins, ChRs, light sensitive channels, light sensitive proteins
Taxonomy: Mechanism Branch / Architecture. Workflows sit above the mechanism and technique branches rather than replacing them.
Summary
Channelrhodopsins are light-activated ion channels from algae used as optogenetic tools to control membrane potential. Reported channelrhodopsin variants conduct either cations or anions, enabling light-driven depolarization or hyperpolarization.
Usefulness & Problems
Why this is useful
Channelrhodopsins provide optical control of membrane voltage and thereby enable artificial modulation of neuronal activity. The cited literature places them within microbial rhodopsin optogenetics for analyses of synaptic transmission, neuronal network activity, and developmental systems such as Xenopus embryos after mRNA injection.
Source:
Channelrhodopsins and their variants are microbial rhodopsin optogenetic tools used to alter membrane potential with light. The abstract states that cation- or anion-conducting variants support depolarization or hyperpolarization.
Source:
optogenetic control of neuronal activity
Source:
membrane depolarization
Source:
membrane hyperpolarization
Problem solved
This tool addresses the need to drive or inhibit excitable cells with light by directly controlling membrane potential. The evidence specifically supports use for depolarization or hyperpolarization through cation- or anion-conducting channelrhodopsin variants.
Source:
They provide a way to drive or inhibit neuronal activity by controlling membrane potential optically.
Source:
light-controlled modulation of membrane potential
Published Workflows
Objective: Engineer and apply NIR upconversion optogenetic systems for more precise and efficient control of membrane ion channels, especially in deep tissues.
Why it works: The review frames the approach as using emissive UCNPs to convert NIR excitation into light that can actuate conventional light-gated channels or ligands, thereby retaining optical control while improving tissue penetration and reducing photodamage concerns associated with shorter wavelengths.
Stages
- 1.Engineering and incorporation of emissive UCNPs into light-gated channel or ligand systems(library_design)
This stage establishes the core UCNP-actuator system needed for NIR control of membrane ion channels.
Selection: Constructing upconversion optogenetic systems by incorporating multiple emissive UCNPs into various light-gated ChRs/ligands.
- 2.Technical improvement for precise and efficient membrane-channel control(functional_characterization)
After building UCNP-coupled optogenetic systems, the review emphasizes technical improvements to make control more precise and efficient.
Selection: Improving precision and efficiency of membrane channel control in the engineered upconversion optogenetic systems.
- 3.Refinement and advancement toward in vivo and clinical applications(in_vivo_validation)
The review presents in vivo and clinical advancement as a later-stage goal after system engineering and performance improvement.
Selection: Advancing NIR-mediated upconversion optogenetics into in vivo and potentially clinical applications.
Objective: Use time-resolved infrared spectroscopic approaches to investigate channelrhodopsin photocycle, ion channel gating, and conductance across the full kinetic range of the light response.
Why it works: The review states that channelrhodopsin dynamics span femtoseconds to minutes, so different IR approaches are needed to observe distinct mechanistic phases over that full range.
Stages
- 1.Ultrafast photochemical observation(functional_characterization)
The review states that retinal isomerization occurs within femtoseconds, requiring an approach suitable for the ultrafast regime.
Selection: Capture earliest light-induced molecular events immediately after photon absorption.
- 2.Conductive-state characterization(functional_characterization)
The review identifies the microsecond regime as the timescale on which conductive states are reached.
Selection: Measure molecular changes associated with formation of conductive states on the microsecond timescale.
- 3.Dark-state recovery characterization(secondary_characterization)
The review states that return into the fully dark-adapted state may take more than minutes, so slower measurements are needed.
Selection: Track return to the fully dark-adapted state over slow timescales.
Taxonomy & Function
Primary hierarchy
Mechanism Branch
Architecture: A composed arrangement of multiple parts that instantiates one or more mechanisms.
Techniques
Directed EvolutionTarget processes
recombinationsignalingInput: Light
Implementation Constraints
Implementation requires light delivery and expression of channelrhodopsin proteins in target cells; one cited example used mRNA injection into 1–8 cell embryos. The evidence identifies channelrhodopsins as algal light-activated channels and supports use of engineered variants with either cation or anion conductance, but it does not specify cofactors, promoters, or construct architecture.
The supplied evidence does not provide quantitative performance metrics such as action spectrum, conductance, kinetics, light sensitivity, or trafficking behavior for specific channelrhodopsin variants. It also does not document direct validation for recombination control, even though signaling-related membrane potential modulation is supported.
Validation
Supporting Sources
Ranked Claims
Channelrhodopsins from green algae enabled precise light-controlled manipulation of neuronal activity and are described as having revolutionized neuroscience.
Channelrhodopsins from green algae, for example, have revolutionized neuroscience by enabling precise, light-controlled manipulation of neuronal activity.
Channelrhodopsins from green algae have revolutionized neuroscience by enabling precise, light-controlled manipulation of neuronal activity.
Optogenetic techniques have been applied to partially restore vision in blind patients and are being explored for neurological, psychiatric, cardiac, and immunological disorders.
Microbial channelrhodopsins allow precise manipulation of neuronal and cardiac activities.
Vertebrate rhodopsins can modulate ion channels through GPCR pathways.
Optogenetics provides precise spatiotemporal control, minimal invasiveness, and tunable reversibility for controlling protein activity and cellular processes.
The review covers genetically encoded light-sensitive ion channel actuators and modulators with diverse ion selectivity and spectral sensitivity.
Animals expressing channelrhodopsin in specific neuronal populations have been used to map neural circuitry and examine post junctional neural effects on GI motility.
GCaMP-expressing animals have been used to characterize Ca2+ signalling behaviours of distinct classes of interstitial cells of Cajal and smooth muscle cells throughout the GI musculature.
Mice expressing GCaMP or RCaMP allow cell-specific visualization of Ca2+ signalling behaviours in the gastrointestinal tract.
Mice expressing channelrhodopsins or halorhodopsins allow light-based manipulation of specific signalling pathways.
Rhodopsin cyclases can be combined with cyclic nucleotide-gated channels in two-component optogenetics for depolarization or hyperpolarization of membrane potential.
We further show how they can be combined with cyclic nucleotide-gated channels in two-component optogenetics, for depolarization or hyperpolarization of membrane potential.
Rhodopsin cyclases can be combined with cyclic nucleotide-gated channels in two-component optogenetics for depolarization or hyperpolarization of membrane potential.
We further show how they can be combined with cyclic nucleotide-gated channels in two-component optogenetics, for depolarization or hyperpolarization of membrane potential.
Rhodopsin cyclases can be combined with cyclic nucleotide-gated channels in two-component optogenetics for depolarization or hyperpolarization of membrane potential.
We further show how they can be combined with cyclic nucleotide-gated channels in two-component optogenetics, for depolarization or hyperpolarization of membrane potential.
Rhodopsin cyclases can be combined with cyclic nucleotide-gated channels in two-component optogenetics for depolarization or hyperpolarization of membrane potential.
We further show how they can be combined with cyclic nucleotide-gated channels in two-component optogenetics, for depolarization or hyperpolarization of membrane potential.
Rhodopsin cyclases can be combined with cyclic nucleotide-gated channels in two-component optogenetics for depolarization or hyperpolarization of membrane potential.
We further show how they can be combined with cyclic nucleotide-gated channels in two-component optogenetics, for depolarization or hyperpolarization of membrane potential.
Rhodopsin cyclases can be combined with cyclic nucleotide-gated channels in two-component optogenetics for depolarization or hyperpolarization of membrane potential.
We further show how they can be combined with cyclic nucleotide-gated channels in two-component optogenetics, for depolarization or hyperpolarization of membrane potential.
Rhodopsin cyclases can be combined with cyclic nucleotide-gated channels in two-component optogenetics for depolarization or hyperpolarization of membrane potential.
We further show how they can be combined with cyclic nucleotide-gated channels in two-component optogenetics, for depolarization or hyperpolarization of membrane potential.
Rhodopsin cyclases can be combined with cyclic nucleotide-gated channels in two-component optogenetics for depolarization or hyperpolarization of membrane potential.
We further show how they can be combined with cyclic nucleotide-gated channels in two-component optogenetics, for depolarization or hyperpolarization of membrane potential.
Rhodopsin cyclases can be combined with cyclic nucleotide-gated channels in two-component optogenetics for depolarization or hyperpolarization of membrane potential.
We further show how they can be combined with cyclic nucleotide-gated channels in two-component optogenetics, for depolarization or hyperpolarization of membrane potential.
Channelrhodopsins and their variants conduct cations or anions and are used for depolarization and hyperpolarization of membrane potential.
We address channelrhodopsins and variants thereof, which conduct cations or anions, for depolarization and hyperpolarization of the membrane potential.
Channelrhodopsins and their variants conduct cations or anions and are used for depolarization and hyperpolarization of membrane potential.
We address channelrhodopsins and variants thereof, which conduct cations or anions, for depolarization and hyperpolarization of the membrane potential.
Channelrhodopsins and their variants conduct cations or anions and are used for depolarization and hyperpolarization of membrane potential.
We address channelrhodopsins and variants thereof, which conduct cations or anions, for depolarization and hyperpolarization of the membrane potential.
Channelrhodopsins and their variants conduct cations or anions and are used for depolarization and hyperpolarization of membrane potential.
We address channelrhodopsins and variants thereof, which conduct cations or anions, for depolarization and hyperpolarization of the membrane potential.
Channelrhodopsins and their variants conduct cations or anions and are used for depolarization and hyperpolarization of membrane potential.
We address channelrhodopsins and variants thereof, which conduct cations or anions, for depolarization and hyperpolarization of the membrane potential.
Channelrhodopsins and their variants conduct cations or anions and are used for depolarization and hyperpolarization of membrane potential.
We address channelrhodopsins and variants thereof, which conduct cations or anions, for depolarization and hyperpolarization of the membrane potential.
Channelrhodopsins and their variants conduct cations or anions and are used for depolarization and hyperpolarization of membrane potential.
We address channelrhodopsins and variants thereof, which conduct cations or anions, for depolarization and hyperpolarization of the membrane potential.
Channelrhodopsins and their variants conduct cations or anions and are used for depolarization and hyperpolarization of membrane potential.
We address channelrhodopsins and variants thereof, which conduct cations or anions, for depolarization and hyperpolarization of the membrane potential.
Channelrhodopsins and their variants conduct cations or anions and are used for depolarization and hyperpolarization of membrane potential.
We address channelrhodopsins and variants thereof, which conduct cations or anions, for depolarization and hyperpolarization of the membrane potential.
Rhodopsin guanylyl cyclases and mutated variants with cyclic AMP specificity can regulate intracellular cGMP and cAMP levels.
Last, we report on a new addition to the optogenetic toolbox, which is rhodopsin guanylyl cyclases, as well as mutated variants with specificity for cyclic AMP. These can be used to regulate intracellular levels of cGMP and cAMP, which are important second messengers in sensory and other neurons.
Rhodopsin guanylyl cyclases and mutated variants with cyclic AMP specificity can regulate intracellular cGMP and cAMP levels.
Last, we report on a new addition to the optogenetic toolbox, which is rhodopsin guanylyl cyclases, as well as mutated variants with specificity for cyclic AMP. These can be used to regulate intracellular levels of cGMP and cAMP, which are important second messengers in sensory and other neurons.
Rhodopsin guanylyl cyclases and mutated variants with cyclic AMP specificity can regulate intracellular cGMP and cAMP levels.
Last, we report on a new addition to the optogenetic toolbox, which is rhodopsin guanylyl cyclases, as well as mutated variants with specificity for cyclic AMP. These can be used to regulate intracellular levels of cGMP and cAMP, which are important second messengers in sensory and other neurons.
Rhodopsin guanylyl cyclases and mutated variants with cyclic AMP specificity can regulate intracellular cGMP and cAMP levels.
Last, we report on a new addition to the optogenetic toolbox, which is rhodopsin guanylyl cyclases, as well as mutated variants with specificity for cyclic AMP. These can be used to regulate intracellular levels of cGMP and cAMP, which are important second messengers in sensory and other neurons.
Rhodopsin guanylyl cyclases and mutated variants with cyclic AMP specificity can regulate intracellular cGMP and cAMP levels.
Last, we report on a new addition to the optogenetic toolbox, which is rhodopsin guanylyl cyclases, as well as mutated variants with specificity for cyclic AMP. These can be used to regulate intracellular levels of cGMP and cAMP, which are important second messengers in sensory and other neurons.
Rhodopsin guanylyl cyclases and mutated variants with cyclic AMP specificity can regulate intracellular cGMP and cAMP levels.
Last, we report on a new addition to the optogenetic toolbox, which is rhodopsin guanylyl cyclases, as well as mutated variants with specificity for cyclic AMP. These can be used to regulate intracellular levels of cGMP and cAMP, which are important second messengers in sensory and other neurons.
Rhodopsin guanylyl cyclases and mutated variants with cyclic AMP specificity can regulate intracellular cGMP and cAMP levels.
Last, we report on a new addition to the optogenetic toolbox, which is rhodopsin guanylyl cyclases, as well as mutated variants with specificity for cyclic AMP. These can be used to regulate intracellular levels of cGMP and cAMP, which are important second messengers in sensory and other neurons.
Rhodopsin guanylyl cyclases and mutated variants with cyclic AMP specificity can regulate intracellular cGMP and cAMP levels.
Last, we report on a new addition to the optogenetic toolbox, which is rhodopsin guanylyl cyclases, as well as mutated variants with specificity for cyclic AMP. These can be used to regulate intracellular levels of cGMP and cAMP, which are important second messengers in sensory and other neurons.
Rhodopsin guanylyl cyclases and mutated variants with cyclic AMP specificity can regulate intracellular cGMP and cAMP levels.
Last, we report on a new addition to the optogenetic toolbox, which is rhodopsin guanylyl cyclases, as well as mutated variants with specificity for cyclic AMP. These can be used to regulate intracellular levels of cGMP and cAMP, which are important second messengers in sensory and other neurons.
The review covers engineering and applications of upconversion optogenetic systems that incorporate multiple emissive UCNPs into various light-gated channelrhodopsin or ligand systems, and discusses technical improvements for more precise and efficient membrane-channel control.
Established optogenetic tools such as channelrhodopsins are mainly stimulated by UV or visible light, which raises concerns about photodamage, limited tissue penetration, and invasive optical fiber implantation.
These optogenetic and chemogenetic toolboxes have enabled advances in deciphering nervous system function and its influence on physiological processes in health and disease.
These novel toolboxes are enabling significant advances in deciphering how the nervous system works and its influence on various physiological processes in health and disease.
These optogenetic and chemogenetic toolboxes have enabled advances in deciphering nervous system function and its influence on physiological processes in health and disease.
These novel toolboxes are enabling significant advances in deciphering how the nervous system works and its influence on various physiological processes in health and disease.
These optogenetic and chemogenetic toolboxes have enabled advances in deciphering nervous system function and its influence on physiological processes in health and disease.
These novel toolboxes are enabling significant advances in deciphering how the nervous system works and its influence on various physiological processes in health and disease.
These optogenetic and chemogenetic toolboxes have enabled advances in deciphering nervous system function and its influence on physiological processes in health and disease.
These novel toolboxes are enabling significant advances in deciphering how the nervous system works and its influence on various physiological processes in health and disease.
These optogenetic and chemogenetic toolboxes have enabled advances in deciphering nervous system function and its influence on physiological processes in health and disease.
These novel toolboxes are enabling significant advances in deciphering how the nervous system works and its influence on various physiological processes in health and disease.
These optogenetic and chemogenetic toolboxes have enabled advances in deciphering nervous system function and its influence on physiological processes in health and disease.
These novel toolboxes are enabling significant advances in deciphering how the nervous system works and its influence on various physiological processes in health and disease.
These optogenetic and chemogenetic toolboxes have enabled advances in deciphering nervous system function and its influence on physiological processes in health and disease.
These novel toolboxes are enabling significant advances in deciphering how the nervous system works and its influence on various physiological processes in health and disease.
Bioengineered light-sensitive ion channels including channelrhodopsins, halorhodopsin, and archaerhodopsins enable light-based artificial modulation of neuronal activity in optogenetics.
Identification and subsequent bioengineering of light-sensitive ion channels (e.g., channelrhodopsins, halorhodopsin, and archaerhodopsins) from the bacteria have made it possible to use light to artificially modulate neuronal activity, namely optogenetics.
Bioengineered light-sensitive ion channels including channelrhodopsins, halorhodopsin, and archaerhodopsins enable light-based artificial modulation of neuronal activity in optogenetics.
Identification and subsequent bioengineering of light-sensitive ion channels (e.g., channelrhodopsins, halorhodopsin, and archaerhodopsins) from the bacteria have made it possible to use light to artificially modulate neuronal activity, namely optogenetics.
Bioengineered light-sensitive ion channels including channelrhodopsins, halorhodopsin, and archaerhodopsins enable light-based artificial modulation of neuronal activity in optogenetics.
Identification and subsequent bioengineering of light-sensitive ion channels (e.g., channelrhodopsins, halorhodopsin, and archaerhodopsins) from the bacteria have made it possible to use light to artificially modulate neuronal activity, namely optogenetics.
Bioengineered light-sensitive ion channels including channelrhodopsins, halorhodopsin, and archaerhodopsins enable light-based artificial modulation of neuronal activity in optogenetics.
Identification and subsequent bioengineering of light-sensitive ion channels (e.g., channelrhodopsins, halorhodopsin, and archaerhodopsins) from the bacteria have made it possible to use light to artificially modulate neuronal activity, namely optogenetics.
Bioengineered light-sensitive ion channels including channelrhodopsins, halorhodopsin, and archaerhodopsins enable light-based artificial modulation of neuronal activity in optogenetics.
Identification and subsequent bioengineering of light-sensitive ion channels (e.g., channelrhodopsins, halorhodopsin, and archaerhodopsins) from the bacteria have made it possible to use light to artificially modulate neuronal activity, namely optogenetics.
Bioengineered light-sensitive ion channels including channelrhodopsins, halorhodopsin, and archaerhodopsins enable light-based artificial modulation of neuronal activity in optogenetics.
Identification and subsequent bioengineering of light-sensitive ion channels (e.g., channelrhodopsins, halorhodopsin, and archaerhodopsins) from the bacteria have made it possible to use light to artificially modulate neuronal activity, namely optogenetics.
Bioengineered light-sensitive ion channels including channelrhodopsins, halorhodopsin, and archaerhodopsins enable light-based artificial modulation of neuronal activity in optogenetics.
Identification and subsequent bioengineering of light-sensitive ion channels (e.g., channelrhodopsins, halorhodopsin, and archaerhodopsins) from the bacteria have made it possible to use light to artificially modulate neuronal activity, namely optogenetics.
Engineered G protein-coupled receptors activated by otherwise inert drug-like small molecules provide a chemogenetic or pharmacogenetic approach for selective remote control of neuronal activity.
Recent advance in genetics has also allowed development of novel pharmacological tools to selectively and remotely control neuronal activity using engineered G protein-coupled receptors, which can be activated by otherwise inert drug-like small molecules such as the designer receptors exclusively activated by designer drug, a form of chemogenetics.
Engineered G protein-coupled receptors activated by otherwise inert drug-like small molecules provide a chemogenetic or pharmacogenetic approach for selective remote control of neuronal activity.
Recent advance in genetics has also allowed development of novel pharmacological tools to selectively and remotely control neuronal activity using engineered G protein-coupled receptors, which can be activated by otherwise inert drug-like small molecules such as the designer receptors exclusively activated by designer drug, a form of chemogenetics.
Engineered G protein-coupled receptors activated by otherwise inert drug-like small molecules provide a chemogenetic or pharmacogenetic approach for selective remote control of neuronal activity.
Recent advance in genetics has also allowed development of novel pharmacological tools to selectively and remotely control neuronal activity using engineered G protein-coupled receptors, which can be activated by otherwise inert drug-like small molecules such as the designer receptors exclusively activated by designer drug, a form of chemogenetics.
Engineered G protein-coupled receptors activated by otherwise inert drug-like small molecules provide a chemogenetic or pharmacogenetic approach for selective remote control of neuronal activity.
Recent advance in genetics has also allowed development of novel pharmacological tools to selectively and remotely control neuronal activity using engineered G protein-coupled receptors, which can be activated by otherwise inert drug-like small molecules such as the designer receptors exclusively activated by designer drug, a form of chemogenetics.
Engineered G protein-coupled receptors activated by otherwise inert drug-like small molecules provide a chemogenetic or pharmacogenetic approach for selective remote control of neuronal activity.
Recent advance in genetics has also allowed development of novel pharmacological tools to selectively and remotely control neuronal activity using engineered G protein-coupled receptors, which can be activated by otherwise inert drug-like small molecules such as the designer receptors exclusively activated by designer drug, a form of chemogenetics.
Engineered G protein-coupled receptors activated by otherwise inert drug-like small molecules provide a chemogenetic or pharmacogenetic approach for selective remote control of neuronal activity.
Recent advance in genetics has also allowed development of novel pharmacological tools to selectively and remotely control neuronal activity using engineered G protein-coupled receptors, which can be activated by otherwise inert drug-like small molecules such as the designer receptors exclusively activated by designer drug, a form of chemogenetics.
Engineered G protein-coupled receptors activated by otherwise inert drug-like small molecules provide a chemogenetic or pharmacogenetic approach for selective remote control of neuronal activity.
Recent advance in genetics has also allowed development of novel pharmacological tools to selectively and remotely control neuronal activity using engineered G protein-coupled receptors, which can be activated by otherwise inert drug-like small molecules such as the designer receptors exclusively activated by designer drug, a form of chemogenetics.
Optogenetics and pharmacogenetics allow selective and bidirectional modulation of defined neuronal populations with unprecedented specificity.
The cutting-edge optogenetics and pharmacogenetics are powerful tools in neuroscience that allow selective and bidirectional modulation of the activity of defined populations of neurons with unprecedented specificity.
Optogenetics and pharmacogenetics allow selective and bidirectional modulation of defined neuronal populations with unprecedented specificity.
The cutting-edge optogenetics and pharmacogenetics are powerful tools in neuroscience that allow selective and bidirectional modulation of the activity of defined populations of neurons with unprecedented specificity.
Optogenetics and pharmacogenetics allow selective and bidirectional modulation of defined neuronal populations with unprecedented specificity.
The cutting-edge optogenetics and pharmacogenetics are powerful tools in neuroscience that allow selective and bidirectional modulation of the activity of defined populations of neurons with unprecedented specificity.
Optogenetics and pharmacogenetics allow selective and bidirectional modulation of defined neuronal populations with unprecedented specificity.
The cutting-edge optogenetics and pharmacogenetics are powerful tools in neuroscience that allow selective and bidirectional modulation of the activity of defined populations of neurons with unprecedented specificity.
Optogenetics and pharmacogenetics allow selective and bidirectional modulation of defined neuronal populations with unprecedented specificity.
The cutting-edge optogenetics and pharmacogenetics are powerful tools in neuroscience that allow selective and bidirectional modulation of the activity of defined populations of neurons with unprecedented specificity.
Optogenetics and pharmacogenetics allow selective and bidirectional modulation of defined neuronal populations with unprecedented specificity.
The cutting-edge optogenetics and pharmacogenetics are powerful tools in neuroscience that allow selective and bidirectional modulation of the activity of defined populations of neurons with unprecedented specificity.
Optogenetics and pharmacogenetics allow selective and bidirectional modulation of defined neuronal populations with unprecedented specificity.
The cutting-edge optogenetics and pharmacogenetics are powerful tools in neuroscience that allow selective and bidirectional modulation of the activity of defined populations of neurons with unprecedented specificity.
High-resolution structural data and molecular dynamics calculations support models that explain channelrhodopsin activation and ion conductance through chromophore isomerization, structural changes, proton transfer reactions, and water rearrangement across timescales from femtoseconds to minutes.
With significant support from a high-resolution 3D structure and from molecular dynamics calculations, scientists are now able to develop models that conclusively explain ChR activation and ion conductance on the basis of chromophore isomerization, structural changes, proton transfer reactions, and water rearrangement on timescales ranging from femtoseconds to minutes.
Channelrhodopsins are versatile neuroscience tools for light-induced activation of selected cells or cell types with high temporal and spatial precision.
In neuroscience, ChRs constitute the most versatile tools for the light-induced activation of selected cells or cell types with unprecedented precision in time and space.
Many channelrhodopsin variants have been discovered or engineered.
In recent years, many ChR variants have been discovered or engineered
Optogenetic reagents including proteins and photochemical switches were used to vary steady-state bioelectrical properties of non-spiking embryonic cells in Xenopus laevis.
we used optogenetic reagents, both proteins and photochemical switches, to vary steady-state bioelectrical properties of non-spiking embryonic cells in Xenopus laevis
Optogenetic reagents including proteins and photochemical switches were used to vary steady-state bioelectrical properties of non-spiking embryonic cells in Xenopus laevis.
we used optogenetic reagents, both proteins and photochemical switches, to vary steady-state bioelectrical properties of non-spiking embryonic cells in Xenopus laevis
Optogenetic reagents including proteins and photochemical switches were used to vary steady-state bioelectrical properties of non-spiking embryonic cells in Xenopus laevis.
we used optogenetic reagents, both proteins and photochemical switches, to vary steady-state bioelectrical properties of non-spiking embryonic cells in Xenopus laevis
Optogenetic reagents including proteins and photochemical switches were used to vary steady-state bioelectrical properties of non-spiking embryonic cells in Xenopus laevis.
we used optogenetic reagents, both proteins and photochemical switches, to vary steady-state bioelectrical properties of non-spiking embryonic cells in Xenopus laevis
Optogenetic reagents including proteins and photochemical switches were used to vary steady-state bioelectrical properties of non-spiking embryonic cells in Xenopus laevis.
we used optogenetic reagents, both proteins and photochemical switches, to vary steady-state bioelectrical properties of non-spiking embryonic cells in Xenopus laevis
Optogenetic reagents including proteins and photochemical switches were used to vary steady-state bioelectrical properties of non-spiking embryonic cells in Xenopus laevis.
we used optogenetic reagents, both proteins and photochemical switches, to vary steady-state bioelectrical properties of non-spiking embryonic cells in Xenopus laevis
Optogenetic reagents including proteins and photochemical switches were used to vary steady-state bioelectrical properties of non-spiking embryonic cells in Xenopus laevis.
we used optogenetic reagents, both proteins and photochemical switches, to vary steady-state bioelectrical properties of non-spiking embryonic cells in Xenopus laevis
Experiments on the dark phenotype yielded evidence that ion flux direction via common optogenetic reagents may be reversed or unpredictable in non-neural cells.
Experiments on this "dark phenotype" yielded evidence that the direction of ion flux via common optogenetic reagents may be reversed, or unpredictable in non-neural cells
Experiments on the dark phenotype yielded evidence that ion flux direction via common optogenetic reagents may be reversed or unpredictable in non-neural cells.
Experiments on this "dark phenotype" yielded evidence that the direction of ion flux via common optogenetic reagents may be reversed, or unpredictable in non-neural cells
Experiments on the dark phenotype yielded evidence that ion flux direction via common optogenetic reagents may be reversed or unpredictable in non-neural cells.
Experiments on this "dark phenotype" yielded evidence that the direction of ion flux via common optogenetic reagents may be reversed, or unpredictable in non-neural cells
Experiments on the dark phenotype yielded evidence that ion flux direction via common optogenetic reagents may be reversed or unpredictable in non-neural cells.
Experiments on this "dark phenotype" yielded evidence that the direction of ion flux via common optogenetic reagents may be reversed, or unpredictable in non-neural cells
Experiments on the dark phenotype yielded evidence that ion flux direction via common optogenetic reagents may be reversed or unpredictable in non-neural cells.
Experiments on this "dark phenotype" yielded evidence that the direction of ion flux via common optogenetic reagents may be reversed, or unpredictable in non-neural cells
Experiments on the dark phenotype yielded evidence that ion flux direction via common optogenetic reagents may be reversed or unpredictable in non-neural cells.
Experiments on this "dark phenotype" yielded evidence that the direction of ion flux via common optogenetic reagents may be reversed, or unpredictable in non-neural cells
Experiments on the dark phenotype yielded evidence that ion flux direction via common optogenetic reagents may be reversed or unpredictable in non-neural cells.
Experiments on this "dark phenotype" yielded evidence that the direction of ion flux via common optogenetic reagents may be reversed, or unpredictable in non-neural cells
The majority of tested reagents also induced phenotypes in dark-kept controls.
however, the majority of reagents also induced phenotypes in controls kept in the dark
The majority of tested reagents also induced phenotypes in dark-kept controls.
however, the majority of reagents also induced phenotypes in controls kept in the dark
The majority of tested reagents also induced phenotypes in dark-kept controls.
however, the majority of reagents also induced phenotypes in controls kept in the dark
The majority of tested reagents also induced phenotypes in dark-kept controls.
however, the majority of reagents also induced phenotypes in controls kept in the dark
The majority of tested reagents also induced phenotypes in dark-kept controls.
however, the majority of reagents also induced phenotypes in controls kept in the dark
The majority of tested reagents also induced phenotypes in dark-kept controls.
however, the majority of reagents also induced phenotypes in controls kept in the dark
The majority of tested reagents also induced phenotypes in dark-kept controls.
however, the majority of reagents also induced phenotypes in controls kept in the dark
The majority of tested reagents caused a significant increase in the percentage of light-exposed tadpoles showing phenotypes associated with altered membrane voltage.
The majority of reagents we tested caused a significant increase in the percentage of light-exposed tadpoles showing relevant phenotypes
The majority of tested reagents caused a significant increase in the percentage of light-exposed tadpoles showing phenotypes associated with altered membrane voltage.
The majority of reagents we tested caused a significant increase in the percentage of light-exposed tadpoles showing relevant phenotypes
The majority of tested reagents caused a significant increase in the percentage of light-exposed tadpoles showing phenotypes associated with altered membrane voltage.
The majority of reagents we tested caused a significant increase in the percentage of light-exposed tadpoles showing relevant phenotypes
The majority of tested reagents caused a significant increase in the percentage of light-exposed tadpoles showing phenotypes associated with altered membrane voltage.
The majority of reagents we tested caused a significant increase in the percentage of light-exposed tadpoles showing relevant phenotypes
The majority of tested reagents caused a significant increase in the percentage of light-exposed tadpoles showing phenotypes associated with altered membrane voltage.
The majority of reagents we tested caused a significant increase in the percentage of light-exposed tadpoles showing relevant phenotypes
The majority of tested reagents caused a significant increase in the percentage of light-exposed tadpoles showing phenotypes associated with altered membrane voltage.
The majority of reagents we tested caused a significant increase in the percentage of light-exposed tadpoles showing relevant phenotypes
The majority of tested reagents caused a significant increase in the percentage of light-exposed tadpoles showing phenotypes associated with altered membrane voltage.
The majority of reagents we tested caused a significant increase in the percentage of light-exposed tadpoles showing relevant phenotypes
When used with rigorous controls, optogenetics can be a powerful tool for investigating ion-flux based signaling in non-excitable systems.
When used in combination with rigorous controls, optogenetics can be a powerful tool for investigating ion-flux based signaling in non-excitable systems
When used with rigorous controls, optogenetics can be a powerful tool for investigating ion-flux based signaling in non-excitable systems.
When used in combination with rigorous controls, optogenetics can be a powerful tool for investigating ion-flux based signaling in non-excitable systems
When used with rigorous controls, optogenetics can be a powerful tool for investigating ion-flux based signaling in non-excitable systems.
When used in combination with rigorous controls, optogenetics can be a powerful tool for investigating ion-flux based signaling in non-excitable systems
When used with rigorous controls, optogenetics can be a powerful tool for investigating ion-flux based signaling in non-excitable systems.
When used in combination with rigorous controls, optogenetics can be a powerful tool for investigating ion-flux based signaling in non-excitable systems
When used with rigorous controls, optogenetics can be a powerful tool for investigating ion-flux based signaling in non-excitable systems.
When used in combination with rigorous controls, optogenetics can be a powerful tool for investigating ion-flux based signaling in non-excitable systems
When used with rigorous controls, optogenetics can be a powerful tool for investigating ion-flux based signaling in non-excitable systems.
When used in combination with rigorous controls, optogenetics can be a powerful tool for investigating ion-flux based signaling in non-excitable systems
When used with rigorous controls, optogenetics can be a powerful tool for investigating ion-flux based signaling in non-excitable systems.
When used in combination with rigorous controls, optogenetics can be a powerful tool for investigating ion-flux based signaling in non-excitable systems
OptoXRs are rhodopsin-GPCR chimeras for controlling intracellular signaling cascades.
Channelrhodopsins, halorhodopsins, bacteriorhodopsins, and OptoXRs are explicitly named tool classes associated with the paper's scope.
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.
Optogenetics as described here is based on channelrhodopsins that are genetically integrated into neuronal membranes and activated by brief light pulses delivered through an optical fibre.
This technique is based on a group of light-sensitive ion channels called channelrhodopsins that can be integrated by genetic engineering into the neuronal cell membrane. By a laser-diode-coupled optical fibre targeting a specific neuronal population of interest, a brief light pulse can then activate those neurones.
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.
Activation of light sensitive channels was used in the authors' recent work to restore respiratory function after experimental spinal cord injury.
we briefly review the history of various attempts to restore breathing after C2 hemisection, and focus on our recent work using the activation of light sensitive channels to restore respiratory function after experimental SCI.
Light-induced activity can be used to investigate the central nervous system respiratory circuitry that controls diaphragmatic function.
We also discuss how such light-induced activity can help shed light on the inner workings of the central nervous system respiratory circuitry that controls diaphragmatic function.
Expression of channelrhodopsins is presented as a therapeutically relevant alternative approach for restoring respiratory function after spinal cord injury.
With the emergence of new and powerful tools from molecular neuroscience, new therapeutically relevant alternatives to these approaches have become available, including expression of light sensitive proteins called channelrhodopsins.
Approval Evidence
Microbial channelrhodopsins (ChRs) allow precise manipulation of neuronal and cardiac activities
Source:
Channelrhodopsins from green algae, for example, have revolutionized neuroscience by enabling precise, light-controlled manipulation of neuronal activity.
Source:
Availability of mice expressing optogenetic modulators (channelrhodopsins or halorhodospins) has allowed manipulation of specific signalling pathways using light. Animals that express channelrhodopsin in specific neuronal populations have been used to map neural circuitry and to examine post junctional neural effects on GI motility.
Source:
We address channelrhodopsins and variants thereof, which conduct cations or anions, for depolarization and hyperpolarization of the membrane potential.
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Most of the established optogenetic tools (e.g., channelrhodopsins, ChRs) for optical manipulations, are mainly stimulated by UV or visible light.
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Identification and subsequent bioengineering of light-sensitive ion channels (e.g., channelrhodopsins, halorhodopsin, and archaerhodopsins) from the bacteria have made it possible to use light to artificially modulate neuronal activity
Source:
In neuroscience, ChRs constitute the most versatile tools for the light-induced activation of selected cells or cell types with unprecedented precision in time and space.
Source:
We injected mRNA for various proteins, including Channelrhodopsins and Archaerhodopsin, into 1-8 cell embryos
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Explicitly supported tool/component names in the discovered sources include channelrhodopsins (ChRs).
Source:
This technique is based on a group of light-sensitive ion channels called channelrhodopsins that can be integrated by genetic engineering into the neuronal cell membrane.
Source:
Channelrhodopsins (ChRs) are light-activated channels from algae
Source:
With the emergence of new and powerful tools from molecular neuroscience, new therapeutically relevant alternatives to these approaches have become available, including expression of light sensitive proteins called channelrhodopsins. In this article we briefly review the history of various attempts to restore breathing after C2 hemisection, and focus on our recent work using the activation of light sensitive channels to restore respiratory function after experimental SCI.
Source:
Channelrhodopsins from green algae enabled precise light-controlled manipulation of neuronal activity and are described as having revolutionized neuroscience.
Channelrhodopsins from green algae, for example, have revolutionized neuroscience by enabling precise, light-controlled manipulation of neuronal activity.
Source:
Channelrhodopsins from green algae have revolutionized neuroscience by enabling precise, light-controlled manipulation of neuronal activity.
Source:
Microbial channelrhodopsins allow precise manipulation of neuronal and cardiac activities.
Source:
Animals expressing channelrhodopsin in specific neuronal populations have been used to map neural circuitry and examine post junctional neural effects on GI motility.
Source:
Mice expressing channelrhodopsins or halorhodopsins allow light-based manipulation of specific signalling pathways.
Source:
Channelrhodopsins and their variants conduct cations or anions and are used for depolarization and hyperpolarization of membrane potential.
We address channelrhodopsins and variants thereof, which conduct cations or anions, for depolarization and hyperpolarization of the membrane potential.
Source:
The review covers engineering and applications of upconversion optogenetic systems that incorporate multiple emissive UCNPs into various light-gated channelrhodopsin or ligand systems, and discusses technical improvements for more precise and efficient membrane-channel control.
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Established optogenetic tools such as channelrhodopsins are mainly stimulated by UV or visible light, which raises concerns about photodamage, limited tissue penetration, and invasive optical fiber implantation.
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These optogenetic and chemogenetic toolboxes have enabled advances in deciphering nervous system function and its influence on physiological processes in health and disease.
These novel toolboxes are enabling significant advances in deciphering how the nervous system works and its influence on various physiological processes in health and disease.
Source:
Bioengineered light-sensitive ion channels including channelrhodopsins, halorhodopsin, and archaerhodopsins enable light-based artificial modulation of neuronal activity in optogenetics.
Identification and subsequent bioengineering of light-sensitive ion channels (e.g., channelrhodopsins, halorhodopsin, and archaerhodopsins) from the bacteria have made it possible to use light to artificially modulate neuronal activity, namely optogenetics.
Source:
Optogenetics and pharmacogenetics allow selective and bidirectional modulation of defined neuronal populations with unprecedented specificity.
The cutting-edge optogenetics and pharmacogenetics are powerful tools in neuroscience that allow selective and bidirectional modulation of the activity of defined populations of neurons with unprecedented specificity.
Source:
High-resolution structural data and molecular dynamics calculations support models that explain channelrhodopsin activation and ion conductance through chromophore isomerization, structural changes, proton transfer reactions, and water rearrangement across timescales from femtoseconds to minutes.
With significant support from a high-resolution 3D structure and from molecular dynamics calculations, scientists are now able to develop models that conclusively explain ChR activation and ion conductance on the basis of chromophore isomerization, structural changes, proton transfer reactions, and water rearrangement on timescales ranging from femtoseconds to minutes.
Source:
Channelrhodopsins are versatile neuroscience tools for light-induced activation of selected cells or cell types with high temporal and spatial precision.
In neuroscience, ChRs constitute the most versatile tools for the light-induced activation of selected cells or cell types with unprecedented precision in time and space.
Source:
Many channelrhodopsin variants have been discovered or engineered.
In recent years, many ChR variants have been discovered or engineered
Source:
Optogenetic reagents including proteins and photochemical switches were used to vary steady-state bioelectrical properties of non-spiking embryonic cells in Xenopus laevis.
we used optogenetic reagents, both proteins and photochemical switches, to vary steady-state bioelectrical properties of non-spiking embryonic cells in Xenopus laevis
Source:
Experiments on the dark phenotype yielded evidence that ion flux direction via common optogenetic reagents may be reversed or unpredictable in non-neural cells.
Experiments on this "dark phenotype" yielded evidence that the direction of ion flux via common optogenetic reagents may be reversed, or unpredictable in non-neural cells
Source:
The majority of tested reagents also induced phenotypes in dark-kept controls.
however, the majority of reagents also induced phenotypes in controls kept in the dark
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The majority of tested reagents caused a significant increase in the percentage of light-exposed tadpoles showing phenotypes associated with altered membrane voltage.
The majority of reagents we tested caused a significant increase in the percentage of light-exposed tadpoles showing relevant phenotypes
Source:
When used with rigorous controls, optogenetics can be a powerful tool for investigating ion-flux based signaling in non-excitable systems.
When used in combination with rigorous controls, optogenetics can be a powerful tool for investigating ion-flux based signaling in non-excitable systems
Source:
Channelrhodopsins, halorhodopsins, bacteriorhodopsins, and OptoXRs are explicitly named tool classes associated with the paper's scope.
Source:
Comparisons
Source-backed strengths
A key strength is bidirectional control at the level of membrane potential through distinct channelrhodopsin variants that conduct cations or anions. The evidence also supports practical use in optogenetic modulation of neuronal activity and reports expression by mRNA injection in 1–8 cell embryos.
Source:
supports depolarization or hyperpolarization through cation- or anion-conducting variants
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