Issue 40, 2018

A DNA nanowire based localized catalytic hairpin assembly reaction for microRNA imaging in live cells

Abstract

Here, we have developed a localized catalytic hairpin assembly (LCHA) strategy for intracellular miR-21 imaging by using DNA nanowires confining both hairpin probes in a compact space. The LCHA is constructed by interval hybridization of DNA hairpin probe pairs to a DNA nanowire with multiplex footholds generated by alternating chain hybridization. Compared to the conventional catalytic hairpin assembly (CHA) strategy, the LCHA significantly shortens the reaction time and enhances the sensitivity. Moreover, the proposed LCHA can serve as a carrier for delivery of probes into live cells as well as protect the probes from nuclease degradation and enhances the stability. We anticipate that this design can be widely applied in facilitating basic biomedical research and disease diagnosis.

Graphical abstract: A DNA nanowire based localized catalytic hairpin assembly reaction for microRNA imaging in live cells

Supplementary files

Article information

Article type
Edge Article
Submitted
04 Jul 2018
Accepted
19 Aug 2018
First published
20 Aug 2018
This article is Open Access

All publication charges for this article have been paid for by the Royal Society of Chemistry
Creative Commons BY-NC license

Chem. Sci., 2018,9, 7802-7808

A DNA nanowire based localized catalytic hairpin assembly reaction for microRNA imaging in live cells

Q. Wei, J. Huang, J. Li, J. Wang, X. Yang, J. Liu and K. Wang, Chem. Sci., 2018, 9, 7802 DOI: 10.1039/C8SC02943A

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