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TitleExtremely potent human monoclonal antibodies from COVID-19 convalescent patients.
Journal, issue, pagesCell, Vol. 184, Issue 7, Page 1821-1835.e16, Year 2021
Publish dateApr 1, 2021
AuthorsEmanuele Andreano / Emanuele Nicastri / Ida Paciello / Piero Pileri / Noemi Manganaro / Giulia Piccini / Alessandro Manenti / Elisa Pantano / Anna Kabanova / Marco Troisi / Fabiola Vacca / Dario Cardamone / Concetta De Santi / Jonathan L Torres / Gabriel Ozorowski / Linda Benincasa / Hyesun Jang / Cecilia Di Genova / Lorenzo Depau / Jlenia Brunetti / Chiara Agrati / Maria Rosaria Capobianchi / Concetta Castilletti / Arianna Emiliozzi / Massimiliano Fabbiani / Francesca Montagnani / Luisa Bracci / Giuseppe Sautto / Ted M Ross / Emanuele Montomoli / Nigel Temperton / Andrew B Ward / Claudia Sala / Giuseppe Ippolito / Rino Rappuoli /
PubMed AbstractHuman monoclonal antibodies are safe, preventive, and therapeutic tools that can be rapidly developed to help restore the massive health and economic disruption caused by the coronavirus disease 2019 ...Human monoclonal antibodies are safe, preventive, and therapeutic tools that can be rapidly developed to help restore the massive health and economic disruption caused by the coronavirus disease 2019 (COVID-19) pandemic. By single-cell sorting 4,277 SARS-CoV-2 spike protein-specific memory B cells from 14 COVID-19 survivors, 453 neutralizing antibodies were identified. The most potent neutralizing antibodies recognized the spike protein receptor-binding domain, followed in potency by antibodies that recognize the S1 domain, the spike protein trimer, and the S2 subunit. Only 1.4% of them neutralized the authentic virus with a potency of 1-10 ng/mL. The most potent monoclonal antibody, engineered to reduce the risk of antibody-dependent enhancement and prolong half-life, neutralized the authentic wild-type virus and emerging variants containing D614G, E484K, and N501Y substitutions. Prophylactic and therapeutic efficacy in the hamster model was observed at 0.25 and 4 mg/kg respectively in absence of Fc functions.
External linksCell / PubMed:33667349 / PubMed Central
MethodsEM (single particle)
Resolution26.0 - 29.0 Å
Structure data

EMDB-23523:
SARS-2 CoV 6P Mut7 in complex with Fab J08
Method: EM (single particle) / Resolution: 29.0 Å

EMDB-23524:
SARS-2 CoV 6P Mut7 in complex with Fab F05
Method: EM (single particle) / Resolution: 26.0 Å

EMDB-23525:
SARS-2 CoV 6P Mut 7 in complex with fragment antigen binding (fab) I14
Method: EM (single particle) / Resolution: 29.0 Å

Source
  • Homo sapiens (human)
  • Severe acute respiratory syndrome coronavirus 2

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