Download MendeleyThe neutralizing breadth of antibodies targeting diverse conserved epitopes between SARS-CoV and SARS-CoV-2.
Xiong, H., Sun, H., Wang, S., Yuan, L., Liu, L., Zhu, Y., Zhang, J., Huang, Y., Qi, R., Jiang, Y., Ma, J., Zhou, M., Ma, Y., Fu, R., Yan, S., Yue, M., Wu, Y., Wei, M., Wang, Y., Li, T., Wang, Y., Zheng, Z., Yu, H., Cheng, T., Li, S., Yuan, Q., Zhang, J., Guan, Y., Zheng, Q., Zhang, T., Xia, N.(2022) Proc Natl Acad Sci U S A 119: e2204256119-e2204256119
- PubMed: 35972965
- DOI: https://doi.org/10.1073/pnas.2204256119
- Primary Citation of Related Structures:
7X7T, 7X7U, 7X7V - PubMed Abstract:
Antibody therapeutics for the treatment of COVID-19 have been highly successful. However, the recent emergence of the Omicron variant has posed a challenge, as it evades detection by most existing SARS-CoV-2 neutralizing antibodies (nAbs). Here, we successfully generated a panel of SARS-CoV-2/SARS-CoV cross-neutralizing antibodies by sequential immunization of the two pseudoviruses. Of the potential candidates, we found that nAbs X01, X10, and X17 offer broad neutralizing potential against most variants of concern, with X17 further identified as a Class 5 nAb with undiminished neutralization against the Omicron variant. Cryo-electron microscopy structures of the three antibodies together in complex with each of the spike proteins of the prototypical SARS-CoV, SARS-CoV-2, and Delta and Omicron variants of SARS-CoV-2 defined three nonoverlapping conserved epitopes on the receptor-binding domain. The triple-antibody mixture exhibited enhanced resistance to viral evasion and effective protection against infection of the Beta variant in hamsters. Our findings will aid the development of antibody therapeutics and broad vaccines against SARS-CoV-2 and its emerging variants.
Organizational Affiliation:
State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, National Institute of Diagnostics and Vaccine Development in Infectious Diseases, School of Public Health, School of Life Sciences, Xiamen University, Xiamen 361102, China.
