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Updated: Jun 27, 2026
An Optogenetic Method to Control and Analyze Gene Expression Patterns in Cell-to-cell Interactions
Published on: March 22, 2018
Targeted Activation of Programmed Cell Death Pathways by Optogenetics
Kateryna Shkarina1, Petr Broz2
1Institute of Innate Immunity, University Hospital Bonn, Bonn, Germany. kateryna.shkarina@uni-bonn.de.
Abstract:
Regulated cell death is an important biological process by which an organism removes unwanted, malignant, or infected cells. Although it has become clear that different forms of regulated cell death exist, it remains difficult to compare their consequences at the cellular and tissue level as they are induced by different stimuli and proceed with different kinetics. Moreover, it was so far difficult to target and induce cell death in selected cells within cell populations or complex tissues without affecting its neighbors. To overcome these obstacles researchers developed novel synthetic biology tools that use chemical or optogenetic approaches to specifically induce PCD in selected cells. Here, we describe a protocol for optogenetic activation of three major types of regulated cell death: apoptosis, necroptosis, and pyroptosis, using light-induced forced oligomerization of their major effector proteins (caspases or kinases).
Insights
Researchers developed optogenetic tools to precisely control programmed cell death (PCD) like apoptosis, necroptosis, and pyroptosis. This allows for targeted cell removal in tissues, overcoming previous limitations in studying and manipulating cell death processes.
Area of Science:
- Cell Biology
- Synthetic Biology
- Biotechnology
Background:
- Regulated cell death is crucial for removing unwanted, malignant, or infected cells.
- Existing methods struggle to compare cell death types or target specific cells without collateral damage.
- Controlling cell death at the cellular and tissue level presents significant challenges.
Purpose of the Study:
- To develop novel synthetic biology tools for precise control over regulated cell death.
- To enable targeted induction of apoptosis, necroptosis, and pyroptosis in selected cells.
- To overcome limitations in comparing cell death consequences and targeting specific cells within tissues.
Main Methods:
- Utilized optogenetic approaches for cell death induction.
- Developed tools for light-induced forced oligomerization of key effector proteins (caspases, kinases).
- Established a protocol for optogenetic activation of apoptosis, necroptosis, and pyroptosis.
Main Results:
- Successfully demonstrated optogenetic control over three major forms of regulated cell death.
- Enabled specific targeting of cell death induction in selected cells.
- Provided a method to overcome challenges in comparing cell death kinetics and consequences.
Conclusions:
- Optogenetic tools offer a precise method for inducing and studying regulated cell death.
- This approach facilitates targeted cell removal in complex biological systems.
- The developed protocol advances the study and therapeutic potential of apoptosis, necroptosis, and pyroptosis.
