PreprintCited by 559SARS-CoV-2 and COVID-19 ResearchImmune responses and vaccinationsvaccines and immunoinformatics approaches

A single mRNA immunization boosts cross-variant neutralizing antibodies elicited by SARS-CoV-2 infection

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Stamatatos, Leonidas, Czartoski, Julie, Wan, Yu-Hsin, Homad, Leah J., Rubin, Vanessa, Glantz, Hayley, Neradilek, Moni, Seydoux, Emilie +11 more·2021·Science

Preprint — published as 10.1126/science.abg9175 · Paper page

Abstract

Emerging SARS-CoV-2 variants have raised concerns about resistance to neutralizing antibodies elicited by previous infection or vaccination. We examined whether sera from recovered and naïve donors collected prior to, and following immunizations with existing mRNA vaccines, could neutralize the Wuhan-Hu-1 and B.1.351 variants. Pre-vaccination sera from recovered donors neutralized Wuhan-Hu-1 and sporadically neutralized B.1.351, but a single immunization boosted neutralizing titers against all variants and SARS-CoV-1 by up to 1000-fold. Neutralization was due to antibodies targeting the receptor binding domain and was not boosted by a second immunization. Immunization of naïve donors also elicited cross-neutralizing responses, but at lower titers. Our study highlights the importance of vaccinating both uninfected and previously infected persons to elicit cross-variant neutralizing antibodies.

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  • Convalescent individuals who received mRNA vaccines showed an average increase of 8.6-fold in the number of circulating RBD-specific memory B cells.

    “By contrast, and consistent with previous reports5,8,20, individuals who recovered from COVID-19 and received mRNA vaccines showed an average increase of 8.6-fold in the number of circulating RBD-specific memory B cells (Fig. 2a).”

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Authors
Stamatatos, L., Czartoski, J., Wan, Y.-H., Homad, L. J., Rubin, V., Glantz, H., Neradilek, M., Seydoux, E., Jennewein, M. F., MacCamy, A. J., Feng, J., Mize, G., De Rosa, S. C., Finzi, A., Lemos, M. P., Cohen, K. W., Moodie, Z., McElrath, M. J., & McGuire, A. T.
Affiliations
  • University of Washington (US)
  • Fred Hutch Cancer Center (US)
  • Centre Hospitalier de l’Université de Montréal (CA)
Corresponding author
  • Stamatatos, Leonidas
  • McElrath, M. Juliana
  • McGuire, Andrew T.
Venue
Science
Publisher
openRxiv
Published
2021-02-08
Volume
372
Issue
6549
Pages
1413-1418
ISSN
0036-8075 (ISSN-L)
OpenAlex
W3136570200
Cited by
559
References
55
Citations by year
2026: 14 · 2025: 35 · 2024: 49 · 2023: 72 · 2022: 212 · 2021: 176
FWCI
40.19
Type
journal article
Language
en
Open access
Licence
cc-by
Locations
  • Science (publishedVersion, cc-by)
  • medRxiv (acceptedVersion, cc-by-nc-nd)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • PubMed Central (submittedVersion, cc-by-nc-nd)
Funders
  • Paul G. Allen Family Foundation
  • Fred Hutchinson Cancer Research Center (UM1 AI068618)
  • National Institute of Allergy and Infectious Diseases (COVID-19, AI-068618, UM1A057266-S1, AI069481, UM1AI068618, UM1AI068635, UM1AI069481, U19AI057266)
Topics
  • Health Sciences › Medicine › Infectious Diseases › SARS-CoV-2 and COVID-19 Research
  • Life Sciences › Immunology and Microbiology › Immunology › Immune responses and vaccinations
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › vaccines and immunoinformatics approaches
Keywords
mRNA vaccines, SARS-CoV-2, booster vaccination, B.1.351 variant, reinfection protection, memory B cells, antibody neutralization

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