Structural basis for neutralization of SARS-CoV-2 and SARS-CoV by a potent therapeutic antibody

Copyright © 2020 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works..

The coronavirus disease 2019 (COVID-19) pandemic caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) has resulted in an unprecedented public health crisis. There are no approved vaccines or therapeutics for treating COVID-19. Here we report a humanized monoclonal antibody, H014, that efficiently neutralizes SARS-CoV-2 and SARS-CoV pseudoviruses as well as authentic SARS-CoV-2 at nanomolar concentrations by engaging the spike (S) receptor binding domain (RBD). H014 administration reduced SARS-CoV-2 titers in infected lungs and prevented pulmonary pathology in a human angiotensin-converting enzyme 2 mouse model. Cryo-electron microscopy characterization of the SARS-CoV-2 S trimer in complex with the H014 Fab fragment unveiled a previously uncharacterized conformational epitope, which was only accessible when the RBD was in an open conformation. Biochemical, cellular, virological, and structural studies demonstrated that H014 prevents attachment of SARS-CoV-2 to its host cell receptors. Epitope analysis of available neutralizing antibodies against SARS-CoV and SARS-CoV-2 uncovered broad cross-protective epitopes. Our results highlight a key role for antibody-based therapeutic interventions in the treatment of COVID-19.

Medienart:

E-Artikel

Erscheinungsjahr:

2020

Erschienen:

2020

Enthalten in:

Zur Gesamtaufnahme - volume:369

Enthalten in:

Science (New York, N.Y.) - 369(2020), 6510 vom: 18. Sept., Seite 1505-1509

Sprache:

Englisch

Beteiligte Personen:

Lv, Zhe [VerfasserIn]
Deng, Yong-Qiang [VerfasserIn]
Ye, Qing [VerfasserIn]
Cao, Lei [VerfasserIn]
Sun, Chun-Yun [VerfasserIn]
Fan, Changfa [VerfasserIn]
Huang, Weijin [VerfasserIn]
Sun, Shihui [VerfasserIn]
Sun, Yao [VerfasserIn]
Zhu, Ling [VerfasserIn]
Chen, Qi [VerfasserIn]
Wang, Nan [VerfasserIn]
Nie, Jianhui [VerfasserIn]
Cui, Zhen [VerfasserIn]
Zhu, Dandan [VerfasserIn]
Shaw, Neil [VerfasserIn]
Li, Xiao-Feng [VerfasserIn]
Li, Qianqian [VerfasserIn]
Xie, Liangzhi [VerfasserIn]
Wang, Youchun [VerfasserIn]
Rao, Zihe [VerfasserIn]
Qin, Cheng-Feng [VerfasserIn]
Wang, Xiangxi [VerfasserIn]

Links:

Volltext

Themen:

ACE2 protein, human
Ace2 protein, mouse
Angiotensin-Converting Enzyme 2
Antibodies, Monoclonal, Humanized
Antibodies, Neutralizing
EC 3.4.15.1
EC 3.4.17.23
Immunoglobulin Fab Fragments
Journal Article
Peptidyl-Dipeptidase A
Receptors, Virus
Research Support, Non-U.S. Gov't

Anmerkungen:

Date Completed 21.10.2020

Date Revised 07.12.2022

published: Print-Electronic

Citation Status MEDLINE

doi:

10.1126/science.abc5881

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM31279908X