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Open AccessJournal ArticleDOI

Antibody cocktail to SARS-CoV-2 spike protein prevents rapid mutational escape seen with individual antibodies.

TLDR
This work investigated the development of resistance against four antibodies to the spike protein that potently neutralize SARS-CoV-2, individually as well as when combined into cocktails.
Abstract
Antibodies targeting the spike protein of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) present a promising approach to combat the coronavirus disease 2019 (COVID-19) pandemic; however, concerns remain that mutations can yield antibody resistance. We investigated the development of resistance against four antibodies to the spike protein that potently neutralize SARS-CoV-2, individually as well as when combined into cocktails. These antibodies remain effective against spike variants that have arisen in the human population. However, novel spike mutants rapidly appeared after in vitro passaging in the presence of individual antibodies, resulting in loss of neutralization; such escape also occurred with combinations of antibodies binding diverse but overlapping regions of the spike protein. Escape mutants were not generated after treatment with a noncompeting antibody cocktail.

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Linear epitope landscape of SARS-CoV-2 Spike protein constructed from 1,051 COVID-19 patients

TL;DR: Wang et al. as mentioned in this paper generated a linear epitope landscape of Spike protein by analyzing serum IgG response of 1,051 COVID-19 patients with a peptide microarray, revealing two regions that rich of linear epitopes, i.e., CTD and a region close to the S29 cleavage site and fusion peptide.
Journal ArticleDOI

Synthetic Neutralizing Peptides Inhibit the Host Cell Binding of Spike Protein and Block Infection of SARS-CoV-2.

TL;DR: In this article, three chemically synthetic neutralizing peptides were obtained via quartz crystal microbalance measurement screening, which showed high affinity at nanomole to the S1 subunit of the spike protein and wild-type SARS-CoV-2 pseudovirus.
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An update on COVID-19: SARS-CoV-2 variants, antiviral drugs, and vaccines

TL;DR: A comprehensive review of the dynamic nature of SARS-CoV-2 transmission is presented in this paper , which summarizes the virus transmission, variants (a variant of concern and a variant of interest), antiviral drugs and vaccines utilized against SARS CoV2 at a glance.
References
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Journal ArticleDOI

Structural basis for the recognition of SARS-CoV-2 by full-length human ACE2.

TL;DR: Cryo–electron microscopy structures of full-length human ACE2 in the presence of the neutral amino acid transporter B0AT1 with or without the receptor binding domain (RBD) of the surface spike glycoprotein of SARS-CoV-2 are presented, providing important insights into the molecular basis for coronavirus recognition and infection.
Journal ArticleDOI

Structural and Functional Basis of SARS-CoV-2 Entry by Using Human ACE2.

TL;DR: The crystal structure of the C-terminal domain of SARS-CoV-2 (SARS- coV- 2-CTD) spike (S) protein in complex with human ACE2 (hACE2) is presented, which reveals a hACE2-binding mode similar overall to that observed for SARS -CoV.
Journal ArticleDOI

Cross-neutralization of SARS-CoV-2 by a human monoclonal SARS-CoV antibody.

TL;DR: Several monoclonal antibodies that target the S glycoprotein of SARS-CoV-2, which was identified from memory B cells of an individual who was infected with severe acute respiratory syndrome coronavirus (SARS- coV) in 2003, and one antibody (named S309) potently neutralization, which may limit the emergence of neutralization-escape mutants.
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