National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)
R01GM120553
United States
Citation
Journal: Science / Year: 2022 Title: Antibody-mediated broad sarbecovirus neutralization through ACE2 molecular mimicry. Authors: Young-Jun Park / Anna De Marco / Tyler N Starr / Zhuoming Liu / Dora Pinto / Alexandra C Walls / Fabrizia Zatta / Samantha K Zepeda / John E Bowen / Kaitlin R Sprouse / Anshu Joshi / Martina ...Authors: Young-Jun Park / Anna De Marco / Tyler N Starr / Zhuoming Liu / Dora Pinto / Alexandra C Walls / Fabrizia Zatta / Samantha K Zepeda / John E Bowen / Kaitlin R Sprouse / Anshu Joshi / Martina Giurdanella / Barbara Guarino / Julia Noack / Rana Abdelnabi / Shi-Yan Caroline Foo / Laura E Rosen / Florian A Lempp / Fabio Benigni / Gyorgy Snell / Johan Neyts / Sean P J Whelan / Herbert W Virgin / Jesse D Bloom / Davide Corti / Matteo Samuele Pizzuto / David Veesler / Abstract: Understanding broadly neutralizing sarbecovirus antibody responses is key to developing countermeasures against SARS-CoV-2 variants and future zoonotic sarbecoviruses. We describe the isolation and ...Understanding broadly neutralizing sarbecovirus antibody responses is key to developing countermeasures against SARS-CoV-2 variants and future zoonotic sarbecoviruses. We describe the isolation and characterization of a human monoclonal antibody, designated S2K146, that broadly neutralizes viruses belonging to SARS-CoV- and SARS-CoV-2-related sarbecovirus clades which use ACE2 as an entry receptor. Structural and functional studies show that most of the virus residues that directly bind S2K146 are also involved in binding to ACE2. This allows the antibody to potently inhibit receptor attachment. S2K146 protects against SARS-CoV-2 Beta challenge in hamsters and viral passaging experiments reveal a high barrier for emergence of escape mutants, making it a good candidate for clinical development. The conserved ACE2-binding residues present a site of vulnerability that might be leveraged for developing vaccines eliciting broad sarbecovirus immunity.
History
Deposition
Dec 21, 2021
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Header (metadata) release
Jan 12, 2022
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Map release
Jan 12, 2022
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Update
Feb 9, 2022
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Current status
Feb 9, 2022
Processing site: RCSB / Status: Released
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