Discovery and Characterization of a Pan-betacoronavirus S2-binding antibody

Three coronaviruses have spilled over from animal reservoirs into the human population and caused deadly epidemics or pandemics. The continued emergence of coronaviruses highlights the need for pan-coronavirus interventions for effective pandemic preparedness. Here, using LIBRA-seq, we report a pane...

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Bibliographic Details
Published in:bioRxiv 2024-01
Main Authors: Johnson, Nicole V, Wall, Steven C, Kramer, Kevin J, Holt, Clinton M, Periasamy, Sivakumar, Richardson, Simone, Suryadevara, Naveenchandra, Andreano, Emanuele, Paciello, Ida, Pierleoni, Giulio, Piccini, Giulia, Huang, Ying, Ge, Pan, Allen, James D, Uno, Naoko, Shiakolas, Andrea R, Pilewski, Kelsey A, Nargi, Rachel S, Sutton, Rachel E, Abu-Shmais, Alexandria A, Parks, Robert, Haynes, Barton F, Carnahan, Robert H, Crowe, Jr, James E, Montomoli, Emanuele, Rappuoli, Rino, Bukreyev, Alexander, Ross, Ted M, Sautto, Giuseppe A, McLellan, Jason S, Georgiev, Ivelin S
Format: Article
Language:English
Subjects:
Antibodies
Coronaviridae
Coronaviruses
Epitopes
Lymphocytes B
Pandemics
Severe acute respiratory syndrome coronavirus 2
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Summary:Three coronaviruses have spilled over from animal reservoirs into the human population and caused deadly epidemics or pandemics. The continued emergence of coronaviruses highlights the need for pan-coronavirus interventions for effective pandemic preparedness. Here, using LIBRA-seq, we report a panel of 50 coronavirus antibodies isolated from human B cells. Of these antibodies, 54043-5 was shown to bind the S2 subunit of spike proteins from alpha-, beta-, and deltacoronaviruses. A cryo-EM structure of 54043-5 bound to the pre-fusion S2 subunit of the SARS-CoV-2 spike defined an epitope at the apex of S2 that is highly conserved among betacoronaviruses. Although non-neutralizing, 54043-5 induced Fc-dependent antiviral responses, including ADCC and ADCP. In murine SARS-CoV-2 challenge studies, protection against disease was observed after introduction of Leu234Ala, Leu235Ala, and Pro329Gly (LALA-PG) substitutions in the Fc region of 54043-5. Together, these data provide new insights into the protective mechanisms of non-neutralizing antibodies and define a broadly conserved epitope within the S2 subunit.
ISSN:2692-8205
2692-8205
DOI:10.1101/2024.01.15.575741