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Optogenetic Activation of Intrinsic Cardiac Autonomic Neurons in Excised Perfused Mouse Hearts
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Cardiac applications of optogenetics.

Christina M Ambrosi1, Aleksandra Klimas1, Jinzhu Yu1

  • 1Department of Biomedical Engineering, Stony Brook University, Stony Brook, NY 11794-8661, USA.

Progress in Biophysics and Molecular Biology
|July 19, 2014
PubMed
Summary
This summary is machine-generated.

Optogenetics, using light-sensitive opsins, enables precise control of cellular activity. This review explores its expanding applications in cardiac electrophysiology for pacing, arrhythmia research, and understanding cell communication.

Keywords:
CardiomyocytesCell deliveryChannelrhodopsinFibroblastsGene deliveryOptogenetics

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Area of Science:

  • Cardiovascular Research
  • Neuroscience
  • Biotechnology

Background:

  • Understanding complex multicellular systems like the brain and heart requires precise cellular-level perturbation and observation.
  • Optogenetics offers cell-specific manipulation and recording with high spatiotemporal resolution using light-sensitive microbial opsins.
  • While established in neuroscience, optogenetics' application in cardiac electrophysiology has been limited.

Purpose of the Study:

  • To review optogenetics applications in cardiac electrophysiology.
  • To discuss the manipulation of membrane voltage in cardiac cells using light.
  • To highlight implications for cardiac pacing, cardioversion, cell communication, and arrhythmia research.

Main Methods:

  • Review of published research and original data on cardiac optogenetics.
  • Discussion of gene and cell delivery methods for cardiac tissue.
  • Analysis of light-sensitive ion channel functionality in various cardiac cell types.
  • Exploration of all-optical electrophysiology using optogenetic sensors and actuators.

Main Results:

  • Optogenetics enables precise control of cardiac cell membrane voltage via light.
  • Applications include probing electrical coupling and studying arrhythmias.
  • All-optical approaches combine optogenetic sensors and actuators for advanced electrophysiology.

Conclusions:

  • Optogenetics holds significant potential for advancing cardiac electrophysiology research.
  • Challenges remain in translating these techniques for in vivo cardiac applications.
  • Further development is needed for widespread in vivo cardiac optogenetics.