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Antibody cocktail just might ward off COVID-19

25 Sep 2020, 02:12 UTC
Antibody cocktail just might ward off COVID-19
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An international research team led by University of Washington scientists has identified two kinds of “ultrapotent human antibodies” that could go into a drug cocktail for guarding against COVID-19.

UW’s David Veesler and Vir Biotechnology’s Katja Fink are the senior authors of the study published online today by the journal Science, which highlights two monoclonal antibodies known as S2E12 and S2M11. The antibodies were found to block SARS-CoV-2, the coronavirus that causes COVID-19, from latching onto molecular receptors on cells in hamsters.
An analysis of the antibodies’ molecular structure determined that they block the virus by gumming up its characteristic “spike” protein, which has been a target for many of the vaccines and therapies under development to fight COVID-19. Some of the researchers behind the newly published study, including Veesler, reported a similarly promising antibody called S309 in May.
Researchers say such antibodies could be combined in a drug cocktail to guard against the virus evolving to evade any single one of the ingredients. A drug that takes advantage of S309’s effect is already being tested in a phase 2/3 clinical trial launched by GlaxoSmithKline and Vir Biotechnology.

The principal authors of the Science study, “Ultrapotent Human Antibodies Protect Against ...

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