ジャーナル: Sci Transl Med / 年: 2022 タイトル: An antibody class with a common CDRH3 motif broadly neutralizes sarbecoviruses. 著者: Lihong Liu / Sho Iketani / Yicheng Guo / Eswar R Reddem / Ryan G Casner / Manoj S Nair / Jian Yu / Jasper F-W Chan / Maple Wang / Gabriele Cerutti / Zhiteng Li / Nicholas C Morano / Candace D ...著者: Lihong Liu / Sho Iketani / Yicheng Guo / Eswar R Reddem / Ryan G Casner / Manoj S Nair / Jian Yu / Jasper F-W Chan / Maple Wang / Gabriele Cerutti / Zhiteng Li / Nicholas C Morano / Candace D Castagna / Laura Corredor / Hin Chu / Shuofeng Yuan / Vincent Kwok-Man Poon / Chris Chun-Sing Chan / Zhiwei Chen / Yang Luo / Marcus Cunningham / Alejandro Chavez / Michael T Yin / David S Perlin / Moriya Tsuji / Kwok-Yung Yuen / Peter D Kwong / Zizhang Sheng / Yaoxing Huang / Lawrence Shapiro / David D Ho / 要旨: The devastation caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) has made clear the importance of pandemic preparedness. To address future zoonotic outbreaks due to related ...The devastation caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) has made clear the importance of pandemic preparedness. To address future zoonotic outbreaks due to related viruses in the sarbecovirus subgenus, we identified a human monoclonal antibody, 10-40, that neutralized or bound all sarbecoviruses tested in vitro and protected against SARS-CoV-2 and SARS-CoV in vivo. Comparative studies with other receptor-binding domain (RBD)-directed antibodies showed 10-40 to have the greatest breadth against sarbecoviruses, suggesting that 10-40 is a promising agent for pandemic preparedness. Moreover, structural analyses on 10-40 and similar antibodies not only defined an epitope cluster in the inner face of the RBD that is well conserved among sarbecoviruses but also uncovered a distinct antibody class with a common CDRH3 motif. Our analyses also suggested that elicitation of this class of antibodies may not be overly difficult, an observation that bodes well for the development of a pan-sarbecovirus vaccine.