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Predicting Gene Silencing Through the Spatiotemporal Control of siRNA Release from Photo-responsive Polymeric Nanocarriers
Published on: July 21, 2017
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Controlling Gene-Silencing with Azobenzene-Containing siRNAs (siRNAzos).
Matthew L Hammill1, Golam Islam1, Jean-Paul Desaulniers1
1University of Ontario Institute of Technology, Faculty of Science, Oshawa, Ontario, Canada.
Current Protocols in Nucleic Acid Chemistry
|November 11, 2020
Summary
Researchers developed light-controlled RNA interference (RNAi) using azobenzene-modified siRNAs (siRNAzos). These siRNAzos allow reversible, real-time control over gene silencing with UV and visible light, offering a robust new tool for molecular biology research.
Area of Science:
- Molecular Biology
- Biochemistry
- Biophysics
Background:
- RNA interference (RNAi) is a powerful gene silencing technique.
- Controlling RNAi activity with external stimuli remains a challenge.
- Azobenzene derivatives offer photoswitchable properties exploitable for molecular control.
Purpose of the Study:
- To characterize azobenzene-containing siRNAs (siRNAzos).
- To evaluate the biological gene silencing efficacy of siRNAzos.
- To establish light-inducible control over siRNA activity.
Main Methods:
- Biophysical characterization including circular dichroism (CD) and melting temperature (Tm) analysis.
- Cell-based assays to assess gene silencing efficacy (Firefly Luciferase, RT-PCR).
- Photo-switching protocols involving UV light for inactivation and visible light for reactivation.
Main Results:
- Successful biophysical characterization of siRNAzo duplexes.
- Demonstrated light-dependent modulation of gene silencing activity.
- Established a reversible and robust protocol for real-time control of siRNAzo function.
Conclusions:
- siRNAzos provide a novel platform for light-controlled gene silencing.
- The developed protocol allows for precise, reversible, and repeatable modulation of RNAi.
- This technology has potential applications in molecular biology and therapeutic research.
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