ジャーナル: Cell Rep / 年: 2021 タイトル: A highly potent antibody effective against SARS-CoV-2 variants of concern. 著者: Craig Fenwick / Priscilla Turelli / Laurent Perez / Céline Pellaton / Line Esteves-Leuenberger / Alex Farina / Jérémy Campos / Erica Lana / Flurin Fiscalini / Charlène Raclot / Florence ...著者: Craig Fenwick / Priscilla Turelli / Laurent Perez / Céline Pellaton / Line Esteves-Leuenberger / Alex Farina / Jérémy Campos / Erica Lana / Flurin Fiscalini / Charlène Raclot / Florence Pojer / Kelvin Lau / Davide Demurtas / Marc Descatoire / Victor S Joo / Mathilde Foglierini / Alessandra Noto / Rana Abdelnabi / Caroline S Foo / Laura Vangeel / Johan Neyts / Wenjuan Du / Berend-Jan Bosch / Geertruida Veldman / Pieter Leyssen / Volker Thiel / Roger LeGrand / Yves Lévy / Didier Trono / Giuseppe Pantaleo / 要旨: Control of the ongoing SARS-CoV-2 pandemic is endangered by the emergence of viral variants with increased transmission efficiency, resistance to marketed therapeutic antibodies, and reduced ...Control of the ongoing SARS-CoV-2 pandemic is endangered by the emergence of viral variants with increased transmission efficiency, resistance to marketed therapeutic antibodies, and reduced sensitivity to vaccine-induced immunity. Here, we screen B cells from COVID-19 donors and identify P5C3, a highly potent and broadly neutralizing monoclonal antibody with picomolar neutralizing activity against all SARS-CoV-2 variants of concern (VOCs) identified to date. Structural characterization of P5C3 Fab in complex with the spike demonstrates a neutralizing activity defined by a large buried surface area, highly overlapping with the receptor-binding domain (RBD) surface necessary for ACE2 interaction. We further demonstrate that P5C3 shows complete prophylactic protection in the SARS-CoV-2-infected hamster challenge model. These results indicate that P5C3 opens exciting perspectives either as a prophylactic agent in immunocompromised individuals with poor response to vaccination or as combination therapy in SARS-CoV-2-infected individuals.