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Updated: Sep 8, 2025

Dual-color Correlative Light and Electron Microscopy for the Visualization of Interactions between Mitochondria and Lysosomes
Published on: September 27, 2024
Dual-key cooperatively activated DNA regulator for controlling mitochondria-lysosome interactions
Yang Xiao1, Longyi Zhu1, Songyuan Du1,2
1School of Chemistry and Chemical Engineering, Nanjing University of Science and Technology, Nanjing, China.
Researchers developed a DNA-based platform for precise control over mitochondria-lysosome interactions. This system enables spatiotemporal regulation of cellular processes like mitochondrial fission and autophagy, offering a new tool for cell biology and therapy.
Area of Science:
- Cell Biology
- Biotechnology
- Molecular Medicine
Background:
- Mitochondria-lysosome interactions are vital for cellular homeostasis.
- Existing optogenetic methods for regulating these interactions are complex and can disrupt organelle function.
Purpose of the Study:
- To develop a fast, simple, biocompatible, and programmable platform for spatiotemporal regulation of mitochondria-lysosome interactions.
- To overcome the limitations of current optogenetic techniques.
Main Methods:
- Design and implementation of two DNA regulators: OK-MLIR (UV-activated) and DK-MLIR (UV and glutathione-activated).
- Utilizing these DNA regulators to modulate mitochondria-lysosome contacts in living cells.
- Investigating the effects on mitochondrial fission, autophagy, cell migration, and proliferation.
Main Results:
- Demonstrated successful spatiotemporal regulation of mitochondria-lysosome interactions using DNA regulators.
- Showcased the facilitation of mitochondrial fission and autophagy.
- DK-MLIR enabled selective and efficient manipulation of cell migration and proliferation with high controllability.
Conclusions:
- The developed DNA-based platform offers a programmable and modular approach for studying organelle interactions.
- This system provides a versatile tool for cellular regulation and precision therapy.
- The technology allows for precise control over cellular functions through targeted organelle communication modulation.
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