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Split G-Quadruplexes Enhance Nanopore Signals for Simultaneous Identification of Multiple Nucleic Acids.

Published version
Peer-reviewed

Type

Article

Change log

Abstract

Assembly of DNA structures based on hybridization like split G-quadruplex (GQ) have great potential for the base-pair specific identification of nucleic acid targets. Herein, we combine multiple split G-quadruplex (GQ) assemblies on designed DNA nanostructures (carrier) with a solid-state nanopore sensing platform. The split GQ probes recognize various nucleic acid sequences in a parallel assay that is based on glass nanopore analysis of molecular structures. Specifically, we split a GQ into two asymmetric parts extended with sequences complementary to the target. The longer G-segment is in solution, and the shorter one is on a DNA carrier. If the target is present, the two separate GQ parts will be brought together to facilitate the split GQ formation and enhance the nanopore signal. We demonstrated detection of multiple target sequences from different viruses with low crosstalk. Given the programmability of this DNA based nanopore sensing platform, it is promising in biosensing.

Description

Funder: Wellcome Trust


Funder: University of Cambridge

Keywords

DNA nanostructure, G-quadruplex, Nanopore, multiplex sensing, nucleic acid detection, Biosensing Techniques, DNA, G-Quadruplexes, Nanopores, Nucleic Acid Hybridization, Nucleic Acids

Journal Title

Nano Lett

Conference Name

Journal ISSN

1530-6984
1530-6992

Volume Title

22

Publisher

American Chemical Society (ACS)
Sponsorship
European Research Council (647144)