PropertyValue
?:abstract
  • SARS-CoV-2 can mutate to evade immunity, with consequences for the efficacy of emerging vaccines and antibody therapeutics. Herein we demonstrate that the immunodominant SARS-CoV-2 spike (S) receptor binding motif (RBM) is the most divergent region of S, and provide epidemiological, clinical, and molecular characterization of a prevalent RBM variant, N439K. We demonstrate that N439K S protein has enhanced binding affinity to the hACE2 receptor, and that N439K virus has similar clinical outcomes and in vitro replication fitness as compared to wild- type. We observed that the N439K mutation resulted in immune escape from a panel of neutralizing monoclonal antibodies, including one in clinical trials, as well as from polyclonal sera from a sizeable fraction of persons recovered from infection. Immune evasion mutations that maintain virulence and fitness such as N439K can emerge within SARS-CoV-2 S, highlighting the need for ongoing molecular surveillance to guide development and usage of vaccines and therapeutics.
is ?:annotates of
?:creator
?:doi
  • 10.1101/2020.11.04.355842
?:doi
?:externalLink
?:journal
  • bioRxiv
?:license
  • biorxiv
?:pdf_json_files
  • document_parses/pdf_json/91dd66ca93ca31cf12517ea4287a36debd3b4c47.json
?:publication_isRelatedTo_Disease
?:sha_id
?:source
  • BioRxiv; WHO
?:title
  • The circulating SARS-CoV-2 spike variant N439K maintains fitness while evading antibody-mediated immunity
?:type
?:year
  • 2020-11-05

Metadata

Anon_0  
expand all