Identification of nsp1 gene as the target of SARS-CoV-2 real-time RT-PCR using nanopore whole-genome sequencing

© 2020 Wiley Periodicals LLC..

Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) has caused the coronavirus disease 2019 (COVID-19) pandemic. Accurate detection of SARS-CoV-2 using molecular assays is critical for patient management and the control of the COVID-19 pandemic. However, there is an increasing number of SARS-CoV-2 viruses with mutations at the primer or probe binding sites, and these mutations may affect the sensitivity of currently available real-time reverse transcription-polymerase chain reaction (RT-PCR) assays targeting the nucleocapsid (N), envelope (E), and open reading frame 1a or 1b genes. Using sequence-independent single-primer amplification and nanopore whole-genome sequencing, we have found that the nonstructural protein 1 (nsp1) gene, located at the 5' end of the SARS-CoV-2 genome, was highly expressed in the nasopharyngeal or saliva specimens of 9 COVID-19 patients of different clinical severity. Based on this finding, we have developed a novel nsp1 real-time RT-PCR assay. The primers and probes are highly specific for SARS-CoV-2. Validation with 101 clinical specimens showed that our nsp1 RT-PCR assay has a sensitivity of 93.1% (95% confidence interval [CI]: 86.2%-97.2%), which was similar to those of N and E gene RT-PCR assays. The diagnostic specificity was 100% (95% CI: 92.9%-100%). The addition of nsp1 for multitarget detection of SARS-CoV-2 can avoid false-negative results due to mutations at the primers/probes binding sites of currently available RT-PCR assays.

Medienart:

E-Artikel

Erscheinungsjahr:

2020

Erschienen:

2020

Enthalten in:

Zur Gesamtaufnahme - volume:92

Enthalten in:

Journal of medical virology - 92(2020), 11 vom: 01. Nov., Seite 2725-2734

Sprache:

Englisch

Beteiligte Personen:

Chan, Wan-Mui [VerfasserIn]
Ip, Jonathan Daniel [VerfasserIn]
Chu, Allen Wing-Ho [VerfasserIn]
Yip, Cyril Chik-Yan [VerfasserIn]
Lo, Lap-Sum [VerfasserIn]
Chan, Kwok-Hung [VerfasserIn]
Ng, Anthony Chin-Ki [VerfasserIn]
Poon, Rosana Wing-Shan [VerfasserIn]
To, Wing-Kin [VerfasserIn]
Tsang, Owen Tak-Yin [VerfasserIn]
Leung, Wai-Shing [VerfasserIn]
Kwan, Mike Yat-Wah [VerfasserIn]
Chua, Gilbert T [VerfasserIn]
Chung, Tom Wai-Hin [VerfasserIn]
Hung, Ivan Fan-Ngai [VerfasserIn]
Kok, Kin-Hang [VerfasserIn]
Cheng, Vincent Chi-Chung [VerfasserIn]
Chan, Jasper Fuk-Woo [VerfasserIn]
Yuen, Kwok-Yung [VerfasserIn]
To, Kelvin Kai-Wang [VerfasserIn]

Links:

Volltext

Themen:

COVID-19
Diagnosis
EC 2.7.7.48
Journal Article
Nanopore sequencing
Nsp1
Nsp1 protein, SARS coronavirus
RNA, Viral
RNA-Dependent RNA Polymerase
RT-PCR
Research Support, Non-U.S. Gov't
SARS-CoV-2
Viral Nonstructural Proteins

Anmerkungen:

Date Completed 24.12.2020

Date Revised 16.07.2022

published: Print-Electronic

Citation Status MEDLINE

doi:

10.1002/jmv.26140

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM310811066