mBio (Jun 2021)

An Engineered Receptor-Binding Domain Improves the Immunogenicity of Multivalent SARS-CoV-2 Vaccines

  • Yan Guo,
  • Wenhui He,
  • Huihui Mou,
  • Lizhou Zhang,
  • Jing Chang,
  • Shoujiao Peng,
  • Amrita Ojha,
  • Rubens Tavora,
  • Mark S. Parcells,
  • Guangxiang Luo,
  • Wenhui Li,
  • Guocai Zhong,
  • Hyeryun Choe,
  • Michael Farzan,
  • Brian D. Quinlan

DOI
https://doi.org/10.1128/mBio.00930-21
Journal volume & issue
Vol. 12, no. 3

Abstract

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All available vaccines for coronavirus disease 2019 (COVID-19) express or deliver the full-length SARS-CoV-2 spike (S) protein. We show that this antigen is not optimal, consistent with observations that the vast majority of the neutralizing response to the virus is focused on the S-protein receptor-binding domain (RBD).