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Related Experiment Video

Updated: Nov 30, 2025

A Method for High Fidelity Optogenetic Control of Individual Pyramidal Neurons In vivo
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Optogenetic approaches to control Ca2+-modulated physiological processes.

Nhung T Nguyen1, Guolin Ma1, Yubin Zhou1,2

  • 1Center for Translational Cancer Research, Institute of Biosciences and Technology, Texas A&M University, Houston, TX 77030, USA.

Current Opinion in Physiology
|November 13, 2020
PubMed
Summary
This summary is machine-generated.

Optogenetic tools called genetically-encoded calcium channel actuators (GECAs) offer precise control over calcium signals. These tools are engineered into cells and show promise for in vivo applications.

Keywords:
CRISPRaCRY2Calcium signalingIon channelLOV2NFATNear-infrared lightgenetically-encoded calcium channel actuatorsimmune responseneuromodulationoptogeneticsprotein design and engineeringsynthetic biologyupconversion nanoparticles

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Area of Science:

  • Cell Biology
  • Neuroscience
  • Biotechnology

Background:

  • Calcium ions (Ca2+) are crucial intracellular second messengers regulating diverse physiological processes.
  • Precise spatiotemporal control of Ca2+ signaling is essential for understanding cellular functions.
  • Existing methods for manipulating Ca2+ signals have limitations in specificity and invasiveness.

Purpose of the Study:

  • To review the engineering strategies, properties, and applications of genetically-encoded Ca2+ channel actuators (GECAs).
  • To highlight the advantages and limitations of GECAs for precise Ca2+ signal modulation.
  • To discuss advanced optogenetic approaches for in vivo GECAs applications.

Main Methods:

  • Engineering photosensitive domains into intracellular signaling proteins, GPCRs, RTKs, and Ca2+ channels.
  • Characterization of kinetic properties, advantages, and limitations of GECAs.
  • Demonstration of GECAs applications in excitable and non-excitable cells and tissues.
  • Exploration of wireless optogenetics strategies, including upconversion nanoparticles (UCNPs) and bioluminescence.

Main Results:

  • Development of genetically-encoded Ca2+ channel actuators (GECAs) for optogenetic control of Ca2+ signals.
  • GECAs demonstrate versatile applications in various cell types and tissues.
  • Integration with NIR light-excitable UCNPs and bioluminescence offers potential for advanced in vivo optogenetics.

Conclusions:

  • GECAs represent powerful tools for precise manipulation of Ca2+ signaling in biological systems.
  • Optogenetic approaches with GECAs provide new avenues for studying Ca2+ dependent physiological processes.
  • Future directions include wireless optogenetics for enhanced in vivo GECAs applications.