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A Method for High Fidelity Optogenetic Control of Individual Pyramidal Neurons In vivo
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Pyroptosis Induction and Visualization at the Single-Cell Level Using Optogenetics.

Bernhard F Röck1, Raed Shalaby1, Ana J García-Sáez2

  • 1Institute for Genetics and Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), University of Cologne, Cologne, Germany.

Methods in Molecular Biology (Clifton, N.J.)
|August 14, 2023
PubMed
Summary
This summary is machine-generated.

Pyroptosis, a programmed cell death, is precisely controlled using a new optogenetics tool. This method allows researchers to study pyroptosis signaling and its effects on surrounding cells with unprecedented temporal and spatial accuracy.

Keywords:
Bystander cell responsesOptogeneticsPyroptosis

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Area of Science:

  • Cell Biology
  • Immunology
  • Molecular Biology

Background:

  • Pyroptosis is a pro-inflammatory programmed cell death pathway critical in immunity and disease.
  • Gasdermin (GSDM) proteins execute pyroptosis by forming pores that release inflammatory cytokines.
  • Current methods lack precise control over pyroptosis induction, limiting mechanistic studies.

Purpose of the Study:

  • To introduce a novel optogenetics tool for controlled pyroptosis induction.
  • To enable spatiotemporal analysis of pyroptosis signaling and its downstream effects.
  • To facilitate quantitative imaging and analysis of pyroptosis in cellular populations.

Main Methods:

  • Development and application of the optogenetics tool NLS_PhoCl_N-GSDMD_mCherry.
  • Utilizing a confocal microscopy setup for pyroptosis induction and imaging.
  • Quantitative analysis of cell death processes and bystander cell responses.

Main Results:

  • Precise temporal and spatial control of pyroptosis induction was achieved.
  • The tool facilitated real-time imaging and quantitative analysis of pyroptosis.
  • Downstream consequences of pyroptosis on neighboring cells can now be studied.

Conclusions:

  • The optogenetics tool NLS_PhoCl_N-GSDMD_mCherry offers a powerful new approach to study pyroptosis.
  • This technology advances our understanding of inflammatory diseases and cancer biology.
  • Opens new avenues for investigating cell death pathways and immune responses.