The abstract names optogenetic actuators as part of the toolset enabling all-optical interrogation of neural circuits in vitro.
First-pass extracted concept
optogenetic actuators
Candidate: concept label8 source documents21 linked claims
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Aliases
optogenetic probes
Extracted Explainers
What the tool is doing
This review describes optogenetic actuators as tools for precise spatiotemporal interrogation of biological processes across multiple biological scales.
Optogenetic actuators are genetically encoded light-sensitive proteins used to manipulate cellular activity. In the review abstract, they are described as enabling precise spatiotemporal control of cardiac activity in zebrafish.
Optogenetic actuators are genetically encoded proteins whose activity or conformation changes in response to light. In this review they are presented as tools for interrogating and controlling signaling networks in space and time.
Optogenetic actuators are described as molecular tools for interrogating membrane contact sites. The review frames them as part of the recent methodological progress in the field.
Optogenetic actuators are described as light-activated tools for controlling neuronal activity in intact living animals. The abstract specifically includes light-activated ion channels and ion pumps.
Resources required
Their use requires genetic introduction or expression of light-sensitive proteins and optical stimulation hardware. The abstract does not specify particular constructs or illumination setups.
These systems require expression of genetically encoded light-responsive proteins and a way to illuminate cells. The abstract does not specify particular wavelengths, hardware, or delivery formats.
These tools imply genetically encoded light-responsive components and light delivery, although the abstract does not specify exact systems.
They require targeted transgene expression and optical hardware capable of precise spatiotemporal illumination.
What problem it solves
They allow non-contact optical control of heart activity in a zebrafish model. This helps probe cardiac electrophysiology in healthy and diseased states.
They solve the problem of perturbing signaling with temporal and spatial precision for molecular-level analysis. The review also frames them as enabling construction of synthetic biochemical systems.
They support mechanistic dissection of membrane contact sites by enabling active experimental interrogation.
These tools let researchers causally manipulate neuronal circuits with light.
What it does not solve
The abstract does not claim that actuators alone solve downstream translational, delivery, or mammalian-model limitations. Specific performance tradeoffs are not detailed in the provided text.
The abstract does not claim that optogenetic actuators solve all downstream issues of pathway interpretation, delivery, or in vivo deployment. Specific performance limits are not described in the provided evidence.
The abstract does not specify which optogenetic actuators are covered or their organelle-pair specificity.
The abstract does not identify which actuator is best for excitation versus inhibition or discuss detailed operational limits.
Alternatives
The abstract contrasts actuators with optogenetic reporters, which measure rather than manipulate activity. No non-optogenetic alternatives are explicitly discussed in the provided text.
The provided abstract does not explicitly name alternative non-optogenetic perturbation methods. It only contrasts optogenetic systems implicitly by emphasizing light-driven spatiotemporal control.
The abstract places optogenetic actuators alongside chemogenetic actuators and genetically encoded probes.
The abstract contrasts actuators with optogenetic sensors, which are used to monitor rather than control activity.
Evidence Snippets
recent advances in optogenetic actuators, genetically encoded calcium and voltage indicators, and patterned photostimulation have transformed in vitro research
Optogenetic actuators enable highly precise spatiotemporal interrogation of biological processes at levels ranging from the subcellular to cells, circuits and behaving organisms.
Among the pioneering cardiac applications of optogenetic actuators were studies in zebrafish, which first demonstrated their use for precise spatiotemporal control of cardiac activity.
Optogenetic actuators - genetically encoded proteins that undergo light-induced changes in activity or conformation - are useful tools for probing signaling networks over time and space.
In recent years, a series of genetically encoded probes and chemogenetic or optogenetic actuators have been invented to aid the visualization and interrogation of MCSs in both fixed and living cells.
optogenetic actuators now allow the activity of neurons to be controlled with millisecond precision
Finally, we discuss current and future efforts towards the combined use of various optogenetic actuators and reporters for simultaneously controlling and imaging the physiology of cells and tissues.
light activated 'actuators'... we can monitor and control neuronal activity... actuators (i.e., light activated ion channels and ion pumps)
Supporting Sources
Linked Claims
Advances in optogenetic actuators, genetically encoded calcium and voltage indicators, and patterned photostimulation enable all-optical interrogation of synaptic plasticity, functional connectivity, and emergent network dynamics in vitro research.
Optogenetic actuators enable highly precise spatiotemporal interrogation of biological processes across scales from subcellular to behaving organisms.
In neuroscience, optogenetics has traditionally focused on somatodendritic control of spiking activity, but tools for direct manipulation of presynaptic functions are growing in scope.
Increasingly sophisticated fluorescence imaging and spatially resolved light stimulation methods make zebrafish a model with unrealized potential for cardiac optogenetic studies.
Quoted textsource-backed
With the advent of increasingly sophisticated fluorescence imaging approaches and methods for spatially-resolved light stimulation in the heart, the zebrafish represents an experimental model with unrealized potential for cardiac optogenetic studies.
For cardiac optogenetic studies, zebrafish offer whole-heart in vivo visualization and interrogation in transparent externally developing embryos, and the small adult heart enables in situ cell-specific observation and control not possible in mammals.
Quoted textsource-backed
For optogenetic studies, zebrafish provide additional advantages, as the whole zebrafish heart can be visualized and interrogated in vivo in the transparent, externally developing embryo, and the relatively small adult heart allows for in situ cell-specific observation and control not possible in mammals.
Optogenetics is a powerful experimental technique for optical measurement and manipulation of cellular activity using genetically encoded light-sensitive reporters and actuators.
Quoted textsource-backed
Optogenetics, involving the optical measurement and manipulation of cellular activity with genetically encoded light-sensitive proteins ("reporters" and "actuators"), is a powerful experimental technique for probing (patho-)physiological function.
Zebrafish studies were among the pioneering cardiac applications of optogenetic actuators and first demonstrated precise spatiotemporal control of cardiac activity.
Quoted textsource-backed
Among the pioneering cardiac applications of optogenetic actuators were studies in zebrafish, which first demonstrated their use for precise spatiotemporal control of cardiac activity.
Optogenetic actuators have enabled assembly of synthetic systems with applications in photography, chemical synthesis, and medicine.
Quoted textsource-backed
enabled the assembly of synthetic systems with applications in areas as diverse as photography, chemical synthesis, and medicine
Optogenetic actuators have permitted detailed dissections of cellular proliferation, differentiation, motility, and death.
Quoted textsource-backed
They have permitted detailed dissections of cellular proliferation, differentiation, motility, and death
Optogenetic actuators are genetically encoded proteins that undergo light-induced changes in activity or conformation.
Quoted textsource-backed
Optogenetic actuators - genetically encoded proteins that undergo light-induced changes in activity or conformation
Optogenetic actuators are useful tools for probing signaling networks over time and space.
Quoted textsource-backed
are useful tools for probing signaling networks over time and space
These molecular tools have accelerated mechanistic dissection of membrane contact sites at the molecular level.
Quoted textsource-backed
These molecular tools have greatly accelerated the pace of mechanistic dissection of membrane contact sites at the molecular level.
The review covers genetically encoded probes and chemogenetic or optogenetic actuators for visualization and interrogation of membrane contact sites.
Quoted textsource-backed
In recent years, a series of genetically encoded probes and chemogenetic or optogenetic actuators have been invented to aid the visualization and interrogation of MCSs in both fixed and living cells. In this review, we present an overview on the latest progress in this endeavour, and provide a general guide to the selection of methods and molecular tools for probing interorganellar membrane contact sites.
Combining activity sensors, optogenetic actuators, and advanced microscopy enables all-optical readout and manipulation of neural circuit activity with single-spike and single-neuron precision.
Quoted textsource-backed
These revolutions have now been combined, together with advanced microscopies, to allow "all-optical" readout and manipulation of activity in neural circuits with single-spike and single-neuron precision.
Optogenetic actuators allow neuronal activity to be controlled with millisecond precision.
Quoted textsource-backed
optogenetic actuators now allow the activity of neurons to be controlled with millisecond precision
All-optical interrogation requires coexpression of genetically encoded activity sensors and optogenetic probes in the same neurons together with the ability to target and record light from selected neurons.
Quoted textsource-backed
Harnessing the power of light in the all-optical approach requires coexpression of genetically encoded activity sensors and optogenetic probes in the same neurons, as well as the ability to simultaneously target and record the light from the selected neurons.
Optogenetic actuators and reporters can be combined for simultaneous control and imaging of cell and tissue physiology.
Quoted textsource-backed
the combined use of various optogenetic actuators and reporters for simultaneously controlling and imaging the physiology of cells and tissues
Implementing optogenetics in zebrafish requires strategies for high transgene expression in defined neuronal populations and optical methods that permit precise spatiotemporal control of illumination.
Quoted textsource-backed
We also describe crucial technical aspects to implement optogenetics in zebrafish including strategies to drive a high level of transgene expression in defined neuronal populations, and recent optical advances that allow the precise spatiotemporal control of sample illumination.
Zebrafish neuronal circuits are presented as an ideal system for optogenetic analysis because of transparency, relatively small size, and amenability to genetic manipulation.
Quoted textsource-backed
Zebrafish neuronal circuits represent an ideal system to apply an optogenetic based analysis owing to its transparency, relatively small size and amenability to genetic manipulation.
Optogenetics provides a combined sensor-and-actuator toolkit for monitoring and controlling neuronal activity in intact living animals with minimal perturbation and high spatiotemporal resolution.
Quoted textsource-backed
With a combination of light emitting 'sensors' and light activated 'actuators', we can monitor and control neuronal activity with minimal perturbation and unprecedented spatiotemporal resolution.
The review covers recent advances in optogenetic sensors including genetically encoded calcium indicators and voltage sensors, and actuators including light-activated ion channels and ion pumps.
Quoted textsource-backed
we describe some of the most recent advances in the development and applications of optogenetic sensors (i.e., genetically encoded calcium indicators and voltage sensors) and actuators (i.e., light activated ion channels and ion pumps).