A non-RBM targeted RBD specific antibody neutralizes SARS-CoV-2 inducing S1 shedding.
Biochem Biophys Res Commun
; 571: 152-158, 2021 09 24.
Article
in English
| MEDLINE | ID: covidwho-1330656
ABSTRACT
Potent neutralizing antibodies (Abs) have been proven with therapeutic efficacy for the intervention against SARS-CoV-2. Majority of these Abs function by directly interfering with the virus entry to host cells. Here, we identified a receptor binding domain (RBD) specific monoclonal Ab (mAb) 82A6 with efficient neutralizing potency against authentic SARS-CoV-2 virus. As most Abs targeting the non-receptor binding motif (RBM) region, 82A6 was incapable to block the RBD-ACE2 interaction. In particular, it actively promoted the S1 subunit shedding from the S protein, which may lead to effective reduction of intact SARS-CoV-2 viruses. Importantly, it could block potential syncytia formation associated with post-infectious cell surface expression of S proteins. Our study evidenced a RBD specific Ab with unique beneficial efficacy against SARS-CoV-2 infection, which might bring informative significance to understand the collective effects of neutralizing Abs elicited in COVID-19 patients.
Keywords
Full text:
Available
Collection:
International databases
Database:
MEDLINE
Main subject:
Antibodies, Neutralizing
/
Spike Glycoprotein, Coronavirus
/
SARS-CoV-2
/
COVID-19
/
Antibodies, Viral
Limits:
Humans
Language:
English
Journal:
Biochem Biophys Res Commun
Year:
2021
Document Type:
Article
Affiliation country:
J.bbrc.2021.07.062
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