Reversibly switchable DNA nanocompartment on surfaces: experiments, applications, and theory

This paper summarizes our studies of DNA nano-compartement in recent years. Biological macromolecules have been used to fabricate many nanostructures, bio-devices, and biomimetics because of their physical and chemical properties. But dynamic nanostructure and bio-machinery that depend on collective...

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Bibliographic Details
Published in:Frontiers of physics 2008-02, Vol.3 (1), p.74-87
Main Authors: Mao, You-dong, Luo, Chun-xiong, Ou-Yang, Qi
Format: Article
Language:English
Subjects:
Astronomy
Astrophysics and Cosmology
Atomic
Biomaterials
Biomedical materials
Biomimetics
Biomolecules
Chemical properties
Condensed Matter Physics
Deoxyribonucleic acid
DNA
Macromolecules
Mechanical properties
Molecular
Nanostructure
Optical and Plasma Physics
Particle and Nuclear Physics
Physics
Physics and Astronomy
Review Article
Substrates
Theoretical analysis
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Summary:This paper summarizes our studies of DNA nano-compartement in recent years. Biological macromolecules have been used to fabricate many nanostructures, bio-devices, and biomimetics because of their physical and chemical properties. But dynamic nanostructure and bio-machinery that depend on collective behavior of biomolecules have not been demonstrated. Here, we report the design of DNA nanocompartment on surfaces that exhibit reversible changes in molecular mechanical properties. Such molecular nanocompartment is served to encage molecules, switched by the collective effect of Watson-Crick base-pairing interactions. This effect is used to investigate the dynamic process of nanocompartment switching and molecular thermosensing, as well as perform molecular recognition. Further, we found that ‘fuel’ strands with single-base variation cannot afford an efficient closing of nanocompartment, which allows highly sensitive label-free DNA array detection. Theoretical analysis and computer simulations confirm our experimental observations, which are discussed in this review paper. Our results suggest that DNA nanocompartment can be used as building blocks for complex biomaterials, because its core functions are independent of substrates and mediators.
ISSN:1673-3487
2095-0462
1673-3606
2095-0470
DOI:10.1007/s11467-008-0004-4