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A SARS-CoV-2 variant elicits an antibody response with a shifted immunodominance hierarchy

  • Allison J. Greaney*
  • , Tyler N. Starr
  • , Rachel T. Eguia
  • , Andrea N. Loes
  • , Khadija Khan
  • , Farina Karim
  • , Sandile Cele
  • , John E. Bowen
  • , Jennifer K. Logue
  • , Davide Corti
  • , David Veesler
  • , Helen Y. Chu
  • , Alex Sigal
  • , Jesse D. Bloom*
  • *Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

44 Scopus citations

Abstract

Many SARS-CoV-2 variants have mutations at key sites targeted by antibodies. However, it is unknown if antibodies elicited by infection with these variants target the same or different regions of the viral spike as antibodies elicited by earlier viral isolates. Here we compare the specificities of polyclonal antibodies produced by humans infected with early 2020 isolates versus the B.1.351 variant of concern (also known as Beta or 20H/501Y.V2), which contains mutations in multiple key spike epitopes. The serum neutralizing activity of antibodies elicited by infection with both early 2020 viruses and B.1.351 is heavily focused on the spike receptor-binding domain (RBD). However, within the RBD, B.1.351-elicited antibodies are more focused on the “class 3” epitope spanning sites 443 to 452, and neutralization by these antibodies is notably less affected by mutations at residue 484. Our results show that SARS-CoV-2 variants can elicit polyclonal antibodies with different immunodominance hierarchies.

Original languageEnglish
Article numbere1010248
JournalPLoS Pathogens
Volume18
Issue number2
DOIs
StatePublished - Feb 2022
Externally publishedYes

Bibliographical note

Publisher Copyright:
Copyright: © 2022 Greaney et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

  1. SDG 3 - Good Health and Well-being
    SDG 3 Good Health and Well-being

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