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Changes in serum-neutralizing antibody potency and breadth post-SARS-CoV-2 mRNA vaccine boost

Journal Article · · iScience
A better understanding of the durability and breadth of serum-neutralizing antibody responses against multiple severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) variants elicited by COVID-19 vaccines is crucial in addressing the current pandemic. In this study, we quantified the decay of serum neutralization antibodies (nAbs) after second and third doses of the original COVID-19 mRNA vaccine. Using an authentic virus-neutralization assay, we found that decay half-lives of WA1- and Delta-nAbs were both ~60 days after second and third vaccine dose. Unexpectedly, the durability of serum antibodies that neutralize three different Omicron subvariants (BA.1.1, BA.5, BA.2.12.1) was substantially better, with half-lives of ≥6 months. A booster dose of the original COVID-19 vaccine was also found to broaden antibody responses against SARS-CoV and four other sarbecoviruses, in addition to multiple SARS-CoV-2 strains. These findings suggest that repeated vaccinations with the COVID-19 vaccine may confer a degree of protection against future spillover of sarbecoviruses from animal reservoirs.
Research Organization:
Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
Sponsoring Organization:
Bill and Melinda Gates Foundation; Brii Biosciences; JPB Foundation; National Institute of Allergy and Infectious Diseases (NIAID); National Institutes of Health (NIH); USDOE
Grant/Contract Number:
89233218CNA000001
OSTI ID:
1961384
Report Number(s):
LA-UR-22-32667
Journal Information:
iScience, Journal Name: iScience Journal Issue: 4 Vol. 26; ISSN 2589-0042
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English

References (25)

Breakthrough infections with SARS-CoV-2 omicron despite mRNA vaccine booster dose journal February 2022
Alarming antibody evasion properties of rising SARS-CoV-2 BQ and XBB subvariants journal January 2023
Increased resistance of SARS-CoV-2 variant P.1 to antibody neutralization journal May 2021
Researchers fear growing COVID vaccine hesitancy in developing nations journal December 2021
Evolution of resistance to COVID-19 vaccination with dynamic social distancing journal February 2022
Potent neutralizing antibodies against multiple epitopes on SARS-CoV-2 spike journal July 2020
Antibody resistance of SARS-CoV-2 variants B.1.351 and B.1.1.7 journal March 2021
Striking antibody evasion manifested by the Omicron variant of SARS-CoV-2 journal December 2021
Bat coronaviruses related to SARS-CoV-2 and infectious for human cells journal February 2022
Antibody evasion properties of SARS-CoV-2 Omicron sublineages journal March 2022
Increased memory B cell potency and breadth after a SARS-CoV-2 mRNA boost journal April 2022
Limited cross-variant immunity from SARS-CoV-2 Omicron without vaccination journal May 2022
Antibody evasion by SARS-CoV-2 Omicron subvariants BA.2.12.1, BA.4 and BA.5 journal July 2022
Covid-19 Vaccine Effectiveness against the Omicron (B.1.1.529) Variant journal April 2022
BNT162b2 Vaccine Effectiveness against Omicron in Children 5 to 11 Years of Age journal July 2022
SARS-CoV-2 neutralizing antibody responses are more robust in patients with severe disease journal January 2020
Mapping the Antigenic and Genetic Evolution of Influenza Virus journal July 2004
Immunological Memory and Protective Immunity: Understanding Their Relation journal April 1996
Immune recall improves antibody durability and breadth to SARS-CoV-2 variants journal December 2022
An antibody class with a common CDRH3 motif broadly neutralizes sarbecoviruses journal May 2022
Neutralizing antibody responses elicited by SARS-CoV-2 mRNA vaccination wane over time and are boosted by breakthrough infection journal March 2022
SARS-CoV-2 BA.1 variant is neutralized by vaccine booster–elicited serum but evades most convalescent serum and therapeutic antibodies journal May 2022
Use of Antigenic Cartography in Vaccine Seed Strain Selection journal March 2010
Protocol and Reagents for Pseudotyping Lentiviral Particles with SARS-CoV-2 Spike Protein for Neutralization Assays journal May 2020
Cutting Edge: Long-Term B Cell Memory in Humans after Smallpox Vaccination journal November 2003