Low-dose in vivo protection and neutralization across SARS-CoV-2 variants by monoclonal antibody combinations.
Amino Acid Sequence
Animals
Antibodies, Monoclonal
/ administration & dosage
Antibodies, Neutralizing
/ chemistry
Antibodies, Viral
/ immunology
Binding Sites
/ genetics
COVID-19
/ immunology
Disease Models, Animal
Dose-Response Relationship, Drug
Epitope Mapping
Epitopes
/ chemistry
Humans
Mice, Transgenic
Neutralization Tests
Protein Binding
Protein Conformation
SARS-CoV-2
/ genetics
Sequence Homology, Amino Acid
Spike Glycoprotein, Coronavirus
/ genetics
Survival Analysis
Journal
Nature immunology
ISSN: 1529-2916
Titre abrégé: Nat Immunol
Pays: United States
ID NLM: 100941354
Informations de publication
Date de publication:
12 2021
12 2021
Historique:
received:
16
06
2021
accepted:
08
10
2021
pubmed:
31
10
2021
medline:
21
12
2021
entrez:
30
10
2021
Statut:
ppublish
Résumé
Prevention of viral escape and increased coverage against severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) variants of concern require therapeutic monoclonal antibodies (mAbs) targeting multiple sites of vulnerability on the coronavirus spike glycoprotein. Here we identify several potent neutralizing antibodies directed against either the N-terminal domain (NTD) or the receptor-binding domain (RBD) of the spike protein. Administered in combinations, these mAbs provided low-dose protection against SARS-CoV-2 infection in the K18-human angiotensin-converting enzyme 2 mouse model, using both neutralization and Fc effector antibody functions. The RBD mAb WRAIR-2125, which targets residue F486 through a unique heavy-chain and light-chain pairing, demonstrated potent neutralizing activity against all major SARS-CoV-2 variants of concern. In combination with NTD and other RBD mAbs, WRAIR-2125 also prevented viral escape. These data demonstrate that NTD/RBD mAb combinations confer potent protection, likely leveraging complementary mechanisms of viral inactivation and clearance.
Identifiants
pubmed: 34716452
doi: 10.1038/s41590-021-01068-z
pii: 10.1038/s41590-021-01068-z
pmc: PMC8642242
doi:
Substances chimiques
Antibodies, Monoclonal
0
Antibodies, Neutralizing
0
Antibodies, Viral
0
Epitopes
0
Spike Glycoprotein, Coronavirus
0
Types de publication
Journal Article
Research Support, N.I.H., Extramural
Research Support, U.S. Gov't, P.H.S.
Langues
eng
Sous-ensembles de citation
IM
Pagination
1503-1514Subventions
Organisme : NIH HHS
ID : S10 OD021527
Pays : United States
Organisme : NIAID NIH HHS
ID : 75N93019C00073
Pays : United States
Organisme : NIAID NIH HHS
ID : R01 AI078788
Pays : United States
Organisme : NIAID NIH HHS
ID : R01 AI050111
Pays : United States
Organisme : NIGMS NIH HHS
ID : P30 GM124165
Pays : United States
Informations de copyright
© 2021. The Author(s).
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