美国Adimab公司Laura M. Walker团队利用人类单克隆抗体实现对SARS相关病毒的广泛中和。该项研究成果于2020年6月15日在线发表在《科学》杂志上。

Title: Broad neutralization of SARS-related viruses by human monoclonal antibodies

Author: Anna Z. Wec, Daniel Wrapp, Andrew S. Herbert, Daniel P. Maurer, Denise Haslwanter, Mrunal Sakharkar, Rohit K. Jangra, M. Eugenia Dieterle, Asparouh Lilov, Deli Huang, Longping V. Tse, Nicole V. Johnson, Ching-Lin Hsieh, Nianshuang Wang, Juergen H. Nett, Elizabeth Champney, Irina Burnina, Michael Brown, Shu Lin, Melanie Sinclair, Carl Johnson, Sarat Pudi, Robert Bortz, Ariel S. Wirchnianski, Ethan Laudermilch, Catalina Florez, J. Maximilian Fels, Cecilia M. O’Brien, Barney S. Graham, David Nemazee, Dennis R. Burton, Ralph S. Baric, James E. Voss, Kartik Chandran, John M. Dye, Jason S. McLellan, Laura M. Walker

Issue&Volume: 2020/06/15

Abstract: Abstract Broadly protective vaccines against known and pre-emergent human coronaviruses (HCoVs) are urgently needed. To gain a deeper understanding of cross-neutralizing antibody responses, we mined the memory B cell repertoire of a convalescent SARS donor and identified 200 SARS-CoV-2 binding antibodies that target multiple conserved sites on the spike (S) protein. A large proportion of the non-neutralizing antibodies display high levels of somatic hypermutation and cross-react with circulating HCoVs, suggesting recall of pre-existing memory B cells (MBCs) elicited by prior HCoV infections. Several antibodies potently cross-neutralize SARS-CoV, SARS-CoV-2, and the bat SARS-like virus WIV1 by blocking receptor attachment and inducing S1 shedding. These antibodies represent promising candidates for therapeutic intervention and reveal a target for the rational design of pan-sarbecovirus vaccines.

DOI: 10.1126/science.abc7424

Source: https://science.sciencemag.org/content/early/2020/06/15/science.abc7424