Broad SARS-CoV-2 neutralization by monoclonal and bispecific antibodies derived from a Gamma-infected individual
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- University of Amsterdam (The Netherlands); Amsterdam Institute for Infection and Immunity, Infectious Diseases (The Netherlands)
- The Scripps Research Institute, La Jolla, CA (United States)
- National Institute for Public Health and the Environment (RIVM), Bilthoven (The Netherlands)
- University of Amsterdam (The Netherlands); Amsterdam Institute for Infection and Immunity, Infectious Diseases (The Netherlands); National Institute for Public Health and the Environment (RIVM), Bilthoven (The Netherlands)
- Amsterdam Institute for Infection and Immunity, Infectious Diseases (The Netherlands); University of Amsterdam (The Netherlands)
- University of Amsterdam (The Netherlands); Amsterdam Institute for Infection and Immunity, Infectious Diseases (The Netherlands); Cornell University, New York, NY (United States)
The pandemic caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) has remained a medical threat due to the evolution of multiple variants that acquire resistance to vaccines and prior infection. Therefore, it is imperative to discover monoclonal antibodies (mAbs) that neutralize a broad range of SARS-CoV-2 variants. A stabilized spike glycoprotein was used to enrich antigen-specific B cells from an individual with a primary Gamma variant infection. Five mAbs selected from those B cells showed considerable neutralizing potency against multiple variants, with COVA309-35 being the most potent against the autologous virus, as well as Omicron BA.1 and BA.2, and COVA309-22 having binding and neutralization activity against Omicron BA.4/5, BQ.1.1, and XBB.1. When combining the COVA309 mAbs as cocktails or bispecific antibodies, the breadth and potency were improved. In addition, the mechanism of cross-neutralization of the COVA309 mAbs was elucidated by structural analysis. Altogether these data indicate that a Gamma-infected individual can develop broadly neutralizing antibodies.
- Research Organization:
- SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- Grant/Contract Number:
- AC02-76SF00515
- OSTI ID:
- 2469865
- Journal Information:
- iScience, Journal Name: iScience Journal Issue: 10 Vol. 26; ISSN 2589-0042
- Publisher:
- ElsevierCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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