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Issue 3, 2019
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Controlled disassembly of a DNA tetrahedron using strand displacement

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Abstract

In this study, we assembled a DNA tetrahedron containing single stranded extensions in the middle of the struts. Using these extensions as toeholds, the tetrahedron can be disassembled by nucleic acid triggers via strand displacement. The release mechanism is sequence specific, is functional in biological fluids such as serum and urine, and the kinetics of the disassembly process can be controlled by different molar ratios of the release strand. Such DNA nanostructures that respond to external stimuli have potential use in biosensing and drug delivery, and we demonstrate a proof-of-concept of this approach for microRNA detection.

Graphical abstract: Controlled disassembly of a DNA tetrahedron using strand displacement

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Publication details

The article was received on 11 Nov 2018, accepted on 21 Dec 2018 and first published on 21 Dec 2018


Article type: Communication
DOI: 10.1039/C8NA00340H
Nanoscale Adv., 2019,1, 969-972
  • Open access: Creative Commons BY-NC license
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    Controlled disassembly of a DNA tetrahedron using strand displacement

    A. R. Chandrasekaran and K. Halvorsen, Nanoscale Adv., 2019, 1, 969
    DOI: 10.1039/C8NA00340H

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