Cited by 67SARS-CoV-2 and COVID-19 ResearchAnimal Virus Infections Studiesvaccines and immunoinformatics approaches

Immunization with the receptor-binding domain of SARS-CoV-2 elicits antibodies cross-neutralizing SARS-CoV-2 and SARS-CoV without antibody-dependent enhancement

Open access
Zang, Jinkai, Gu, Chenjian, Zhou, Bingjie, Zhang, Chao, Yang, Yong, Xu, Shiqi, Bai, Lulu, Zhang, Rong +7 more·2020·Cell Discovery

Published version of a preprint

Abstract

Abstract Recently emerged severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is the pathogen responsible for the ongoing coronavirus disease 2019 (COVID-19) pandemic. Currently, there is no vaccine available for preventing SARS-CoV-2 infection. Like closely related severe acute respiratory syndrome coronavirus (SARS-CoV), SARS-CoV-2 also uses its receptor-binding domain (RBD) on the spike (S) protein to engage the host receptor, human angiotensin-converting enzyme 2 (ACE2), facilitating subsequent viral entry. Here we report the immunogenicity and vaccine potential of SARS-CoV-2 RBD (SARS2-RBD)-based recombinant proteins. Immunization with SARS2-RBD recombinant proteins potently induced a multi-functional antibody response in mice. The resulting antisera could efficiently block the interaction between SARS2-RBD and ACE2, inhibit S-mediated cell-cell fusion, and neutralize both SARS-CoV-2 pseudovirus entry and authentic SARS-CoV-2 infection. In addition, the anti-RBD sera also exhibited cross binding, ACE2-blockade, and neutralization effects towards SARS-CoV. More importantly, we found that the anti-RBD sera did not promote antibody-dependent enhancement of either SARS-CoV-2 pseudovirus entry or authentic virus infection of Fc receptor-bearing cells. These findings provide a solid foundation for developing RBD-based subunit vaccines for SARS-CoV2.

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Authors
Zang, J., Gu, C., Zhou, B., Zhang, C., Yang, Y., Xu, S., Bai, L., Zhang, R., Deng, Q., Yuan, Z., Tang, H., Qu, D., Lavillette, D., Xie, Y., & Huang, Z.
Affiliations
  • Chinese Academy of Sciences (CN)
  • Shanghai Medical College of Fudan University (CN)
Corresponding author
  • Lavillette, Dimitri
  • Xie, Youhua
  • Huang, Zhong
Venue
Cell Discovery
Published
2020-09-03
Volume
6
Issue
1
Pages
61-61
ISSN
2056-5968 (ISSN-L)
OpenAlex
W3082164758
Cited by
67
References
42
Citations by year
2026: 3 · 2025: 5 · 2024: 4 · 2023: 6 · 2022: 13 · 2021: 27 · 2020: 9
FWCI
1.80
Type
journal article
Language
en
Open access
Locations
  • Cell Discovery (publishedVersion, cc-by)
  • bioRxiv (Cold Spring Harbor Laboratory) (acceptedVersion)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • HAL (submittedVersion, cc-by)
Funders
  • Ministry of Science and Technology of the People’;s Republic of China (2020YFC0845900)
  • Chinese Academy of Sciences (XDB29040300)
Topics
  • Health Sciences › Medicine › Infectious Diseases › SARS-CoV-2 and COVID-19 Research
  • Life Sciences › Agricultural and Biological Sciences › Animal Science and Zoology › Animal Virus Infections Studies
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › vaccines and immunoinformatics approaches
Keywords
SARS-CoV-2, receptor binding domain, spike protein, SARS-CoV, cross-neutralizing antibodies, antibody-dependent enhancement, vaccine immunization, ACE2 receptor, S1 subunit, COVID-19 pandemic

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