Paired heavy- and light-chain signatures contribute to potent SARS-CoV-2 neutralization in public antibody responses.
Cell Rep
; 37(1): 109771, 2021 10 05.
Article
in English
| MEDLINE | ID: covidwho-1439919
Preprint
This scientific journal article is probably based on a previously available preprint. It has been identified through a machine matching algorithm, human confirmation is still pending.
See preprint
This scientific journal article is probably based on a previously available preprint. It has been identified through a machine matching algorithm, human confirmation is still pending.
See preprint
ABSTRACT
Understanding mechanisms of protective antibody recognition can inform vaccine and therapeutic strategies against SARS-CoV-2. We report a monoclonal antibody, 910-30, targeting the SARS-CoV-2 receptor-binding site for ACE2 as a member of a public antibody response encoded by IGHV3-53/IGHV3-66 genes. Sequence and structural analyses of 910-30 and related antibodies explore how class recognition features correlate with SARS-CoV-2 neutralization. Cryo-EM structures of 910-30 bound to the SARS-CoV-2 spike trimer reveal binding interactions and its ability to disassemble spike. Despite heavy-chain sequence similarity, biophysical analyses of IGHV3-53/3-66-encoded antibodies highlight the importance of native heavylight pairings for ACE2-binding competition and SARS-CoV-2 neutralization. We develop paired heavylight class sequence signatures and determine antibody precursor prevalence to be â¼1 in 44,000 human B cells, consistent with public antibody identification in several convalescent COVID-19 patients. These class signatures reveal genetic, structural, and functional immune features that are helpful in accelerating antibody-based medical interventions for SARS-CoV-2.
Keywords
Full text:
Available
Collection:
International databases
Database:
MEDLINE
Main subject:
Spike Glycoprotein, Coronavirus
/
Angiotensin-Converting Enzyme 2
/
SARS-CoV-2
/
COVID-19
/
Antibodies, Monoclonal
Type of study:
Prognostic study
/
Risk factors
Limits:
Aged
/
Animals
/
Humans
/
Male
Language:
English
Journal:
Cell Rep
Year:
2021
Document Type:
Article
Affiliation country:
J.celrep.2021.109771