ジャーナル: bioRxiv / 年: 2021 タイトル: Memory B cell repertoire for recognition of evolving SARS-CoV-2 spike. 著者: Pei Tong / Avneesh Gautam / Ian Windsor / Meghan Travers / Yuezhou Chen / Nicholas Garcia / Noah B Whiteman / Lindsay G A McKay / Felipe J N Lelis / Shaghayegh Habibi / Yongfei Cai / Linda J ...著者: Pei Tong / Avneesh Gautam / Ian Windsor / Meghan Travers / Yuezhou Chen / Nicholas Garcia / Noah B Whiteman / Lindsay G A McKay / Felipe J N Lelis / Shaghayegh Habibi / Yongfei Cai / Linda J Rennick / W Paul Duprex / Kevin R McCarthy / Christy L Lavine / Teng Zuo / Junrui Lin / Adam Zuiani / Jared Feldman / Elizabeth A MacDonald / Blake M Hauser / Anthony Griffths / Michael S Seaman / Aaron G Schmidt / Bing Chen / Donna Neuberg / Goran Bajic / Stephen C Harrison / Duane R Wesemann / 要旨: Memory B cell reserves can generate protective antibodies against repeated SARS-CoV-2 infections, but with an unknown reach from original infection to antigenically drifted variants. We charted ...Memory B cell reserves can generate protective antibodies against repeated SARS-CoV-2 infections, but with an unknown reach from original infection to antigenically drifted variants. We charted memory B cell receptor-encoded monoclonal antibodies (mAbs) from 19 COVID-19 convalescent subjects against SARS-CoV-2 spike (S) and found 7 major mAb competition groups against epitopes recurrently targeted across individuals. Inclusion of published and newly determined structures of mAb-S complexes identified corresponding epitopic regions. Group assignment correlated with cross-CoV-reactivity breadth, neutralization potency, and convergent antibody signatures. mAbs that competed for binding the original S isolate bound differentially to S variants, suggesting the protective importance of otherwise-redundant recognition. The results furnish a global atlas of the S-specific memory B cell repertoire and illustrate properties conferring robustness against emerging SARS-CoV-2 variants.