DNA Structural Barcode Copying and Random Access

被引:18
|
作者
Boskovic, Filip [1 ]
Ohmann, Alexander [1 ]
Keyser, Ulrich F. [1 ]
Chen, Kaikai [1 ]
机构
[1] Univ Cambridge, Cavendish Lab, JJ Thomson Ave, Cambridge CB3 0HE, England
来源
SMALL STRUCTURES | 2021年 / 2卷 / 05期
基金
欧洲研究理事会;
关键词
deoxyribonucleic acid data storage; deoxyribonucleic acid nanostructures; deoxyribonucleic acid nanotechnology; nanopores; single-molecule; SINGLE; NANOSTRUCTURES; REPLICATION; ORIGAMI;
D O I
10.1002/sstr.202000144
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Digitally encoded deoxyribonucleic acid (DNA) nanostructures built via DNA self-assembly have established applications in multiplexed biosensing and storing digital information. However, a key challenge is that DNA structures are not easily copied which is of vital importance for their large-scale production and access to desired molecules by target-specific amplification. Herein, DNA structural barcodes are built and the copying and random access of the barcodes from a library of molecules is demonstrated using a modified polymerase chain reaction (PCR). The structural barcodes are assembled by annealing a single-stranded DNA scaffold with complementary short oligonucleotides containing protrusions as digital bits at defined locations. DNA nicks in these structures are ligated to facilitate barcode copying using PCR. To randomly access a target from a library of barcodes, a non-complementary end in the DNA construct that serves as a barcode-specific primer-template is used. Readout of the DNA structural barcodes is performed with nanopore measurements. The study provides a roadmap for the convenient production of large quantities of self-assembled DNA nanostructures. In addition, this strategy offers access to specific targets, a crucial capability for multiplexed single-molecule sensing, and DNA data storage.
引用
收藏
页数:7
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