Issue 37, 2022

Recombinase amplified CRISPR enhanced chain reaction (RACECAR) for viral genome detection

Abstract

We have developed a ‘recombinase amplified CRISPR enhanced chain reaction’ (RACECAR) assay that can detect as little as 40 copies of hepatitis B virus (HBV) genome using a benchtop spectrofluorometer. The limit of detection was determined to be 3 copies of HBV genome. The specificity of RACECAR was confirmed against hepatitis A virus (HAV). This assay can detect the genomic targets directly in serum samples without an extraction step. The 4 h-long fluorometric assay was developed by combining three tiers of isothermal amplification processes and can be repurposed for any target of choice. This highly modular reaction setup is an untapped resource that can be incorporated into the front-runners of molecular diagnostics.

Graphical abstract: Recombinase amplified CRISPR enhanced chain reaction (RACECAR) for viral genome detection

Supplementary files

Article information

Article type
Communication
Submitted
30 Jūn. 2022
Accepted
11 Sept. 2022
First published
12 Sept. 2022

Nanoscale, 2022,14, 13500-13504

Author version available

Recombinase amplified CRISPR enhanced chain reaction (RACECAR) for viral genome detection

M. J. Kachwala, C. W. Smith, N. Nandu and M. V. Yigit, Nanoscale, 2022, 14, 13500 DOI: 10.1039/D2NR03590A

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