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Open AccessJournal ArticleDOI

The surveillance of spike protein for patients with COVID-19 detected in Hong Kong in 2020.

TLDR
In this paper, the authors summarize the S protein mutations detected among coronavirus disease 2019 (COVID-19) patients in Hong Kong in 2020, and the full encoding region of the S proteins was sequenced.
Abstract
In 2020, numerous fast-spreading severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) variants have been reported. These variants had unusually high genetic changes in the spike (S) protein. In an attempt to understand the genetic background of SARS-CoV-2 viruses in Hong Kong, especially before vaccination, the purpose of this study is to summarize the S protein mutations detected among coronavirus disease 2019 (COVID-19) patients in Hong Kong in 2020. COVID-19 cases were selected every month in 2020. One virus from each case was analyzed. The full encoding region of the S proteins was sequenced. From January 2020 to December 2020, a total of 340 COVID-19 viruses were sequenced. The amino acids of the S protein for 44 (12.9%) were identical to the reference sequence, WIV04 (GenBank accession MN996528). For the remaining 296 sequences (87.1%), a total of 43 nonsynonymous substitution patterns were found. Of the nonsynonymous substitutions found, some of them were only detected at specific time intervals and then they disappeared. The ongoing genetic surveillance system is important. It would facilitate early detection of mutations that can increase infectivity as well as mutations that are selected for the virus to escape immunological restraint.

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The D614G Virus Mutation Enhances Anosmia in COVID-19 Patients: Evidence from a Systematic Review and Meta-analysis of Studies from South Asia.

TL;DR: In this article, the authors conducted a systematic review and meta-analysis of studies in South Asian populations when either the D614 or the G614 virus was dominant, and found that populations infected predominantly with the G-614 virus had a much higher prevalence of anosmia (pooled prevalence of 31.8%) compared with the same ethnic populations infected mostly with the D-6G mutation.
Posted ContentDOI

The D614G virus mutation enhances anosmia in COVID-19 patients: Evidence from a systematic review and meta-analysis of studies from South Asia

TL;DR: In this article, the authors conducted a systematic review and meta-analysis of studies in South Asian populations when either the D614 or the G614 virus was dominant and found that populations infected predominantly with the G6G mutation had a much higher prevalence of chemosensory dysfunction (pooled prevalence of 31.8%) compared with the same ethnic populations infected mostly with the D6g mutation.
Journal ArticleDOI

Early detection of community acquired of SARS-CoV-2 lineage B.1.351 in Hong Kong

TL;DR: In this article, SARS-CoV-2 cases were screened for the key non-synonymous substitutions in spike protein by different assays and preliminary positive cases were further tested by whole genome sequencing.
References
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Journal ArticleDOI

Structure, Function, and Antigenicity of the SARS-CoV-2 Spike Glycoprotein.

TL;DR: It is demonstrating that cross-neutralizing antibodies targeting conserved S epitopes can be elicited upon vaccination, and it is shown that SARS-CoV-2 S uses ACE2 to enter cells and that the receptor-binding domains of Sars- coV- 2 S and SARS S bind with similar affinities to human ACE2, correlating with the efficient spread of SATS among humans.
Posted ContentDOI

Emergence and rapid spread of a new severe acute respiratory syndrome-related coronavirus 2 (SARS-CoV-2) lineage with multiple spike mutations in South Africa

Houriiyah Tegally, +60 more
- 22 Dec 2020 - 
TL;DR: In this paper, the authors describe a new SARS-CoV-2 lineage (501Y.V2) characterised by eight lineage-defining mutations in the spike protein, including three at important residues in the receptor-binding domain (K417N, E484K and N501Y).
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