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Updated: Mar 11, 2026

Controllable Ion Channel Expression through Inducible Transient Transfection
Published on: February 17, 2017
Light-Controlled Ion Transport through Biomimetic DNA-Based Channels
Pei Li1,2, Ganhua Xie3,4, Xiang-Yu Kong2,4
1Key Laboratory of Bio-Inspired Smart Interfacial Science and Technology of Ministry of Education School of Chemistry and Environment, Beihang University, Beijing, 100191, P.R. China.
Researchers created light-controlled DNA nanochannels using azobenzene-DNA (Azo-DNA) strands. These switchable channels regulate ion transport, offering potential for drug delivery and data storage applications.
Area of Science:
- Biotechnology
- Nanotechnology
- Materials Science
Background:
- Developing controllable nanochannels is crucial for advanced applications.
- Photoresponsive materials offer precise external control over nanoscale systems.
Purpose of the Study:
- To fabricate light-controlled nanochannels using azobenzene-incorporated DNA (Azo-DNA) strands.
- To investigate the regulation of ion transport through these switchable Azo-DNA nanochannels.
Main Methods:
- Self-assembly of azobenzene-incorporated DNA (Azo-DNA) strands to form nanochannels.
- Utilizing visible and ultraviolet light to reversibly switch Azo-DNA conformation between collapsed and relaxed states.
- Monitoring ion transport through the nanochannels under light stimulation.
Main Results:
- Successfully fabricated light-controlled nanochannels using Azo-DNA.
- Demonstrated reversible opening and closing of nanochannels by alternating light stimuli.
- Observed light-induced regulation of ion transport through the Azo-DNA nanochannels.
Conclusions:
- Azo-DNA serves as an effective switchable unit for nanochannel control.
- The developed system exhibits fast response times and reversibility.
- Potential applications include light-controlled drug release, optical information storage, and logic networks due to biocompatibility and design versatility.
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