National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)
120553
米国
引用
ジャーナル: bioRxiv / 年: 2020 タイトル: Structural and functional analysis of a potent sarbecovirus neutralizing antibody. 著者: Dora Pinto / Young-Jun Park / Martina Beltramello / Alexandra C Walls / M Alejandra Tortorici / Siro Bianchi / Stefano Jaconi / Katja Culap / Fabrizia Zatta / Anna De Marco / Alessia Peter / ...著者: Dora Pinto / Young-Jun Park / Martina Beltramello / Alexandra C Walls / M Alejandra Tortorici / Siro Bianchi / Stefano Jaconi / Katja Culap / Fabrizia Zatta / Anna De Marco / Alessia Peter / Barbara Guarino / Roberto Spreafico / Elisabetta Cameroni / James Brett Case / Rita E Chen / Colin Havenar-Daughton / Gyorgy Snell / Amalio Telenti / Herbert W Virgin / Antonio Lanzavecchia / Michael S Diamond / Katja Fink / David Veesler / Davide Corti 要旨: SARS-CoV-2 is a newly emerged coronavirus responsible for the current COVID-19 pandemic that has resulted in more than one million infections and 73,000 deaths . Vaccine and therapeutic discovery ...SARS-CoV-2 is a newly emerged coronavirus responsible for the current COVID-19 pandemic that has resulted in more than one million infections and 73,000 deaths . Vaccine and therapeutic discovery efforts are paramount to curb the pandemic spread of this zoonotic virus. The SARS-CoV-2 spike (S) glycoprotein promotes entry into host cells and is the main target of neutralizing antibodies. Here we describe multiple monoclonal antibodies targeting SARS-CoV-2 S identified from memory B cells of a SARS survivor infected in 2003. One antibody, named S309, potently neutralizes SARS-CoV-2 and SARS-CoV pseudoviruses as well as authentic SARS-CoV-2 by engaging the S receptor-binding domain. Using cryo-electron microscopy and binding assays, we show that S309 recognizes a glycan-containing epitope that is conserved within the sarbecovirus subgenus, without competing with receptor attachment. Antibody cocktails including S309 along with other antibodies identified here further enhanced SARS-CoV-2 neutralization and may limit the emergence of neutralization-escape mutants. These results pave the way for using S309 and S309-containing antibody cocktails for prophylaxis in individuals at high risk of exposure or as a post-exposure therapy to limit or treat severe disease.