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Sensitive and rapid on-site detection of SARS-CoV-2 using a gold nanoparticle-based high-throughput platform coupled with CRISPR/Cas12-assisted RT-LAMP.
- Source :
-
Sensors and actuators. B, Chemical [Sens Actuators B Chem] 2021 Oct 15; Vol. 345, pp. 130411. Date of Electronic Publication: 2021 Jul 06. - Publication Year :
- 2021
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Abstract
- The outbreak of corona virus disease 2019 (COVID-19) caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) has led to a global pandemic. The high infectivity of SARS-CoV-2 highlights the need for sensitive, rapid and on-site diagnostic assays of SARS-CoV-2 with high-throughput testing capability for large-scale population screening. The current detection methods in clinical application need to operate in centralized labs. Though some on-site detection methods have been developed, few tests could be performed for high-throughput analysis. We here developed a gold nanoparticle-based visual assay that combines with CRISPR/Cas12a-assisted RT-LAMP, which is called Cas12a-assisted RT-LAMP/AuNP (CLAP) assay for rapid and sensitive detection of SARS-CoV-2. In optimal condition, we could detect down to 4 copies/μL of SARS-CoV-2 RNA in 40 min. by naked eye. The sequence-specific recognition character of CRISPR/Cas12a enables CLAP a superior specificity. More importantly, the CLAP is easy for operation that can be extended to high-throughput test by using a common microplate reader. The CLAP assay holds a great potential to be applied in airports, railway stations, or low-resource settings for screening of suspected people. To the best of our knowledge, this is the first AuNP-based colorimetric assay coupled with Cas12 and RT-LAMP for on-site diagnosis of COVID-19. We expect CLAP assay will improve the current COVID-19 screening efforts, and make contribution for control and mitigation of the pandemic.<br />Competing Interests: The authors report no declarations of interest.<br /> (© 2021 Elsevier B.V. All rights reserved.)
Details
- Language :
- English
- ISSN :
- 0925-4005
- Volume :
- 345
- Database :
- MEDLINE
- Journal :
- Sensors and actuators. B, Chemical
- Publication Type :
- Academic Journal
- Accession number :
- 34248284
- Full Text :
- https://doi.org/10.1016/j.snb.2021.130411