Year: 2022
Type: article
Abstract: ABSTRACT Coronavirus vaccines that are highly effective against SARS-CoV-2 variants are needed to control the current pandemic. We previously reported a receptor-binding domain (RBD) sortase A-conjugated ferritin nanoparticle (RBD-scNP) vaccine that induced neutralizing antibodies against SARS-CoV-2 and pre-emergent sarbecoviruses and protected monkeys from SARS-CoV-2 WA-1 infection. Here, we demonstrate SARS-CoV-2 RBD-scNP immunization induces potent neutralizing antibodies in non-human primates (NHPs) against all eight SARS-CoV-2 variants tested including the Beta, Delta, and Omicron variants. The Omicron variant was neutralized by RBD-scNP-induced serum antibodies with a mean of 10.6-fold reduction of ID50 titers compared to SARS-CoV-2 D614G. Immunization with RBD-scNPs protected NHPs from SARS-CoV-2 WA-1, Beta, and Delta variant challenge, and protected mice from challenges of SARS-CoV-2 Beta variant and two other heterologous sarbecoviruses. These results demonstrate the ability of RBD-scNPs to induce broad neutralization of SARS-CoV-2 variants and to protect NHPs and mice from multiple different SARS-related viruses. Such a vaccine could provide the needed immunity to slow the spread of and reduce disease caused by SARS-CoV-2 variants such as Delta and Omicron.
Source: Nature Communications
Authors: Dapeng Li, David R. Martinez, Alexandra Schäfer, Haiyan Chen, Maggie Barr, Laura L. Sutherland, Esther Lee, Robert Parks, Dieter Mielke, Whitney Edwards, Amanda Newman, Kevin W. Bock, Mahnaz Minai, Bianca M. Nagata, Matthew Gagne, Daniel C. Douek, C. Todd DeMarco, Thomas N. Denny, Thomas H. Oguin, Alecia Brown, Wes Rountree, Yunfei Wang, Katayoun Mansouri, Robert J. Edwards, Guido Ferrari, Gregory D. Sempowski, Amanda Eaton, Juanjie Tang, Derek W. Cain, Sampa Santra, Norbert Pardi, Drew Weissman, Mark A. Tomai, Christopher B. Fox, Ian N. Moore, Hanne Andersen, Mark G. Lewis, Hana Golding, Robert Seder, Surender Khurana, Ralph S. Baric, David C. Montefiori, Kevin O. Saunders, Barton F. Haynes
Institutions: Duke University, Duke Medical Center, University of North Carolina at Chapel Hill, National Institutes of Health, National Institute of Allergy and Infectious Diseases, Vaccine Research Center, Center for Biologics Evaluation and Research, United States Food and Drug Administration, Beth Israel Deaconess Medical Center, University of Pennsylvania, 3M (United States), Infectious Disease Research Institute, Bioqual
Language: English
Subfield: Infectious Diseases
Field: Medicine
Domain: Health Sciences
Open Access status: gold
Estimated APC paid: $5,890
Awards: Regional Biocontainment Laboratories Facility and Building System Upgrades Support, Regional Biocontainment Laboratory (RBL), Design and Development of a Pan-betacoronavirus Vaccine, Messenger RNA Immunogens for initiation of protective HIV non-neutralizing antibodies, Emory National Primate Research Center
OpenAlex ID: W4307099094