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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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Citations
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Deep geometric representations for modeling effects of mutations on protein-protein binding affinity.

TL;DR: Experiments showed that, without any annotated signals, GraphPPI can capture meaningful patterns of the protein structures and new state-of-the-art performance in predicting the binding affinity changes upon both single- and multi-point mutations on five benchmark datasets.
Journal ArticleDOI

SARS-CoV-2 Antiviral Therapy.

TL;DR: In this article, a review summarizes 1 year of progress in the race to develop antiviral therapies for COVID-19, including research spanning preclinical and clinical drug development efforts, with an emphasis on antiviral compounds that are in clinical development or that are high priorities for clinical development.
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SARS-CoV-2: Immune Response Elicited by Infection and Development of Vaccines and Treatments.

TL;DR: Clinical evidence suggests that migration of immune cells to the affected organs can produce an exacerbated release of proinflammatory mediators that contribute to disease and render the immune response as a major player during the development of the COVID-19 disease.
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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