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Phototriggered RNase H-Powered Patterning of Caged DNA/RNA-Functionalized Interfaces Using DNA-Modified Particles,
Danlong Chen1, Yunlong Qin2, Shijun Xu1
1State Key Laboratory of Geomicrobiology and Environmental Changes, Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan, 430074, China.
Small (Weinheim an Der Bergstrasse, Germany)
|June 26, 2025
Summary
This study introduces photoresponsive RNA/DNA interfaces patterned by DNA-modified rolling motor particles. Controlled light activation enables precise directional patterning of these novel bio-interfaces.
Area of Science:
- Biomaterials Science
- Surface Chemistry
- Nanotechnology
Background:
- Developing methods for precise control over nanoscale patterning is crucial for advanced materials and devices.
- Photoresponsive materials offer tunable properties activated by light, enabling spatiotemporal control.
- DNA nanotechnology provides versatile tools for assembling and functionalizing nanoscale components.
Purpose of the Study:
- To describe the patterning of photoresponsive RNA/DNA monolayer interfaces using DNA-modified rolling motor particles.
- To investigate methods for achieving controlled and directional patterning of these interfaces.
- To introduce a novel approach for transforming cells into patterning frameworks.
Main Methods:
- Utilizing o-nitrobenzyl phosphate caged RNA hairpin/DNA monolayer interfaces.
- Employing photochemical uncaging (λ = 365 nm) to activate interfaces for particle binding.
- Using DNA-modified rolling motor particles (SiO2 particles, liposomes, cells) for patterning.
- Applying photolithography and laser confocal microscopy for directed patterning.
- Integrating DNA tetrahedra into cell membranes to create cellular rolling motor frameworks.
Main Results:
- Photoactivation of the interface enables binding of DNA-modified particle frameworks.
- RNase H stimulation facilitates patterning by rolling motor particles.
- Localized photoactivation leads to directional patterning, while global activation results in random patterning.
- DNA-bridged particle assemblies create linear patterns, which can be disrupted.
- Cells transformed with DNA tetrahedra act as rolling motor patterning frameworks.
Conclusions:
- Photoresponsive RNA/DNA interfaces can be precisely patterned using DNA-modified rolling motor particles.
- Light-based activation and microscopy techniques allow for controlled directional assembly.
- This work presents a novel method for creating functional cellular patterning agents.
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