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Saunders, Kevin O; Lee, Esther; Parks, Robert; Martinez, David R; Li, Dapeng; Chen, Haiyan; Edwards, Robert J; Gobeil, Sophie; Barr, Maggie; Mansouri, Katayoun; Alam, S Munir; Sutherland, Laura L; Cai, Fangping; Sanzone, Aja M; Berry, Madison; Manne, Kartik; Bock, Kevin W; Minai, Mahnaz; Nagata, Bianca M; Kapingidza, Anyway B; Azoitei, Mihai; Tse, Longping V; Scobey, Trevor D; Spreng, Rachel L; Rountree, R Wes; DeMarco, C Todd; Denny, Thomas N; Woods, Christopher W; Petzold, Elizabeth W; Tang, Juanjie; Oguin, 3rd, Thomas H; Sempowski, Gregory D; Gagne, Matthew; Douek, Daniel C; Tomai, Mark A; Fox, Christopher B; Seder, Robert; Wiehe, Kevin; Weissman, Drew; Pardi, Norbert; Golding, Hana; Khurana, Surender; Acharya, Priyamvada; Andersen, Hanne; Lewis, Mark G; Moore, Ian N; Montefiori, David C; Baric, Ralph S; Haynes, Barton F
Nature, 06/2021, Letnik: 594, Številka: 7864Journal Article
Betacoronaviruses caused the outbreaks of severe acute respiratory syndrome (SARS) and Middle East respiratory syndrome, as well as the current pandemic of SARS coronavirus 2 (SARS-CoV-2) . Vaccines that elicit protective immunity against SARS-CoV-2 and betacoronaviruses that circulate in animals have the potential to prevent future pandemics. Here we show that the immunization of macaques with nanoparticles conjugated with the receptor-binding domain of SARS-CoV-2, and adjuvanted with 3M-052 and alum, elicits cross-neutralizing antibody responses against bat coronaviruses, SARS-CoV and SARS-CoV-2 (including the B.1.1.7, P.1 and B.1.351 variants). Vaccination of macaques with these nanoparticles resulted in a 50% inhibitory reciprocal serum dilution (ID ) neutralization titre of 47,216 (geometric mean) for SARS-CoV-2, as well as in protection against SARS-CoV-2 in the upper and lower respiratory tracts. Nucleoside-modified mRNAs that encode a stabilized transmembrane spike or monomeric receptor-binding domain also induced cross-neutralizing antibody responses against SARS-CoV and bat coronaviruses, albeit at lower titres than achieved with the nanoparticles. These results demonstrate that current mRNA-based vaccines may provide some protection from future outbreaks of zoonotic betacoronaviruses, and provide a multimeric protein platform for the further development of vaccines against multiple (or all) betacoronaviruses.
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in: SICRIS
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