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Author Spotlight: Manipulating Signaling in Zebrafish Embryos to Decode Cell Fate Decisions
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Optogenetic Protein Cleavage in Zebrafish Embryos.

Wes Brown1, Savannah Albright1, Michael Tsang2

  • 1Department of Chemistry, University of Pittsburgh, Pittsburgh, PA 15260, USA.

Chembiochem : a European Journal of Chemical Biology
|October 5, 2022
PubMed
Summary

Researchers can now control cellular processes in zebrafish embryos using light. A new optogenetic tool, PhoCl, enables precise, light-triggered protein cleavage for applications like protein translocation and apoptosis.

Keywords:
PhoClapoptosisoptogeneticsphotocleavable proteinszebrafish

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Area of Science:

  • Optogenetics
  • Molecular Biology
  • Zebrafish Embryology

Background:

  • Optogenetic tools offer precise spatiotemporal control over cellular functions.
  • Zebrafish embryos are valuable models due to their optical transparency.
  • Photocleavable optogenetic proteins have not been previously applied in zebrafish research.

Purpose of the Study:

  • To introduce and validate a photocleavable optogenetic protein for use in zebrafish embryos.
  • To demonstrate light-induced control over protein cleavage events in vivo.
  • To establish a novel tool for temporal and spatial manipulation of cellular processes in zebrafish.

Main Methods:

  • Utilized PhoCl, a photocleavable fluorescent protein, in zebrafish embryos.
  • Applied light stimulation to induce protein cleavage.
  • Observed light-triggered protein translocation and apoptosis as functional readouts.

Main Results:

  • Successfully demonstrated optical control of protein cleavage in zebrafish embryos using PhoCl.
  • Confirmed PhoCl's capability for temporal and spatial regulation of cellular events.
  • Validated light-triggered protein translocation and apoptosis mediated by PhoCl.

Conclusions:

  • PhoCl is an effective optogenetic tool for controlling protein cleavage in zebrafish embryos.
  • This technology enables precise, light-inducible manipulation of cellular processes in a transparent vertebrate model.
  • Opens new avenues for optogenetic research in developmental biology and disease modeling using zebrafish.