Optoribogenetic Modulation of Transcription

Area of Science:

• Molecular Biology
• Optogenetics
• Gene Regulation

Background:

• Optogenetic tools offer precise spatiotemporal control over biological processes.
• CRISPR/dCas9 systems are powerful tools for gene editing and regulation.
• Existing methods for gene expression control lack precise light-dependent activation.

Purpose of the Study:

• To develop a light-inducible CRISPR/dCas9 system for controlled gene expression.
• To demonstrate the feasibility of light-dependent gene overexpression using a proof-of-concept experiment.
• To establish a protocol for rapid, in vitro application of this optogenetic system.

Main Methods:

• Integration of the PAL photoreceptor and aptamer 53 into a CRISPR/dCas9 framework.
• Development of a protocol involving cell seeding, transfection, and flow cytometry analysis.
• Utilizing eBFP as a reporter for proof-of-concept validation.

Main Results:

• Successful implementation of light-dependent gene overexpression in vitro.
• Demonstration of precise and reversible control over gene expression using light.
• Validation of the system's applicability for upregulating endogenous genes.

Conclusions:

• The developed optogenetic CRISPR/dCas9 system provides a robust platform for light-controlled gene activation.
• This method offers subcellular resolution and broad applicability for gene expression studies.
• The 3-day protocol facilitates efficient and rapid experimentation.