SARS-CoV-2 protein subunit vaccination of mice and rhesus macaques elicits potent and durable neutralizing antibody responses.
Cell Rep Med
; 2(4): 100252, 2021 04 20.
Article
in English
| MEDLINE | ID: covidwho-1164615
ABSTRACT
The outbreak and spread of SARS-CoV-2 (severe acute respiratory syndrome-coronavirus-2) is a current global health emergency, and effective prophylactic vaccines are needed urgently. The spike glycoprotein of SARS-CoV-2 mediates entry into host cells, and thus is the target of neutralizing antibodies. Here, we show that adjuvanted protein immunization with soluble SARS-CoV-2 spike trimers, stabilized in prefusion conformation, results in potent antibody responses in mice and rhesus macaques, with neutralizing antibody titers exceeding those typically measured in SARS-CoV-2 seropositive humans by more than one order of magnitude. Neutralizing antibody responses were observed after a single dose, with exceptionally high titers achieved after boosting. A follow-up to monitor the waning of the neutralizing antibody responses in rhesus macaques demonstrated durable responses that were maintained at high and stable levels at least 4 months after boosting. These data support the development of adjuvanted SARS-CoV-2 prefusion-stabilized spike protein subunit vaccines.
Keywords
Full text:
Available
Collection:
International databases
Database:
MEDLINE
Main subject:
Antibodies, Neutralizing
/
Spike Glycoprotein, Coronavirus
/
SARS-CoV-2
Type of study:
Cohort study
/
Prognostic study
Topics:
Vaccines
Limits:
Animals
Language:
English
Journal:
Cell Rep Med
Year:
2021
Document Type:
Article
Affiliation country:
J.xcrm.2021.100252
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