Rapid detection of Nipah virus using the one-pot RPA-CRISPR/Cas13a assay



doi: 10.1016/j.virusres.2023.199130.


Online ahead of print.

Affiliations

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Jing Miao et al.


Virus Res.


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Abstract

Nipah virus (NiV) is a zoonotic pathogen with airborne transmission and high case fatality rates in humans. There is currently no treatment or vaccine against NiV infection approved for humans or animals, therefore early diagnosis is the key to control any potential outbreaks. In this study, we developed an optimized one-pot assay using recombinase polymerase amplification (RPA) coupled to CRISPR/Cas13a for the molecular detection of NiV. The one-pot RPA-CRISPR/Cas13a assay for NiV detection was specific and did not cross-react against other selected (re)-emerging pathogens. The sensitivity of the one-pot RPA-CRISPR/Cas13a assay for NiV detection can detect as little as 103 cp/μL of total synthetic NiV cDNA. The assay was then validated with simulated clinical samples. The results for the one-pot RPA-CRISPR/Cas13a assay could be visualized with either fluorescence or lateral flow strips for convenient clinical or field diagnostics, providing a useful supplement to the gold-standard qRT-PCR assay for detecting NiV detections.


Keywords:

CRISPR/Cas13a; Nipah virus; lateral flow strips; molecular detection; recombinase polymerase amplification.

Conflict of interest statement

Declaration of Competing Interest We declare no competing interests.

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