1区 · 生物学
ArticleOA
作者: Moreira, Gustavo Marçal Schmidt Garcia  ; Adler, Julia  ; Frenzel, André  ; Ruschig, Maximilian  ; Schirrmann, Thomas  ; Roth, Günter  ; Roth, Kristian Daniel Ralph  ; Schäckermann, Dorina  ; Fühner, Viola  ; Garritsen, Hendrikus S P  ; Abassi, Leila  ; Bertoglio, Federico  ; Trimpert, Jakob  ; Meier, Doris  ; Koch, Allan  ; Gerstner, Andreas  ; Čičin-Šain, Luka  ; Wenzel, Esther Veronika  ; Casu, Sebastian  ; Hermann, Andreas  ; Langreder, Nora  ; Schneider, Kai-Thomas  ; Steinke, Stephan  ; Chaudhry, M Zeeshan  ; Eschke, Kathrin  ; Rand, Ulfert  ; Klünemann, Thomas  ; Kuhn, Philipp  ; Heine, Philip Alexander  ; Ballmann, Rico  ; Hust, Michael  ; Korn, Janin  ; Dübel, Stefan  ; Becker, Marlies  ; Russo, Giulio  ; Riese, Peggy  ; Van den Heuvel, Joop  ; Kim, Yeonsu  ; Zock-Emmenthal, Susanne  ; Scholz, Margitta  ; Schubert, Maren 
The novel betacoronavirus severe acute respiratory syndrome-coronavirus-2 (SARS-CoV-2) causes a form of severe pneumonia disease called coronavirus disease 2019 (COVID-19). To develop human neutralizing anti-SARS-CoV-2 antibodies, antibody gene libraries from convalescent COVID-19 patients were constructed and recombinant antibody fragments (scFv) against the receptor-binding domain (RBD) of the spike protein were selected by phage display. The antibody STE90-C11 shows a subnanometer IC50 in a plaque-based live SARS-CoV-2 neutralization assay. The in vivo efficacy of the antibody is demonstrated in the Syrian hamster and in the human angiotensin-converting enzyme 2 (hACE2) mice model. The crystal structure of STE90-C11 Fab in complex with SARS-CoV-2-RBD is solved at 2.0 Å resolution showing that the antibody binds at the same region as ACE2 to RBD. The binding and inhibition of STE90-C11 is not blocked by many known emerging RBD mutations. STE90-C11-derived human IgG1 with FcγR-silenced Fc (COR-101) is undergoing Phase Ib/II clinical trials for the treatment of moderate to severe COVID-19.