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Updated: Dec 22, 2025
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Published on: October 7, 2025
Photocaged FRET nanoflares for intracellular microRNA imaging
Jing Li1, Shijun Cai, Bing Zhou
1State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, College of Biology, Key Laboratory for Bio-Nanotechnology and Molecular Engineering of Hunan Province, Hunan University, Changsha, China. jinhuang@hnu.edu.cn kmwang@hnu.edu.cn.
We developed photocaged FRET nanoflares for precise, on-demand microRNA imaging in living cells. These probes are activated by UV light, enabling spatiotemporal control over molecular detection.
Area of Science:
- Biotechnology
- Molecular Imaging
- Cell Biology
Background:
- Förster Resonance Energy Transfer (FRET) nanoflares were previously developed for intracellular molecular detection.
- Existing methods lack spatiotemporal control and on-demand activation for molecular imaging.
Purpose of the Study:
- To develop photocaged FRET nanoflares for spatiotemporal microRNA imaging in living cells.
- To enhance detection accuracy and enable on-demand sensing capabilities.
Main Methods:
- Development of photocaged FRET nanoflares.
- Utilizing UV light activation for probe functionality.
- Imaging of microRNA in living cells.
Main Results:
- Successful development of photocaged FRET nanoflares.
- Demonstrated spatiotemporal control over microRNA imaging.
- Probes require UV light exposure to become active for detection.
Conclusions:
- Photocaged FRET nanoflares offer a novel approach for controlled, on-demand microRNA imaging in live cells.
- This technology improves spatiotemporal resolution in molecular detection.
- UV-activated probes provide enhanced accuracy and control in cellular imaging applications.
