Two-component spike nanoparticle vaccine protects macaques from SARS-CoV-2 infection
Двухкомпонентная наночастичная вакцина на основе спайкового белка защищает макак от инфекции SARS-CoV-2
2021-01-25
SCID: 54.1/vrjhuxwm
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SARS-CoV-2 spike proteincynomolgus macaquesneutralizing antibody responsesprotein-based nanoparticle vaccineviral infection and replication
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Abstract (AI)
The severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) pandemic is continuing to disrupt personal lives, global healthcare systems, and economies. Hence, there is an urgent need for a vaccine that prevents viral infection, transmission, and disease. Here, we present a two-component protein-based nanoparticle vaccine that displays multiple copies of the SARS-CoV-2 spike protein. Immunization studies show that this vaccine induces potent neutralizing antibody responses in mice, rabbits, and cynomolgus macaques. The vaccine-induced immunity protects macaques against a high-dose challenge, resulting in strongly reduced viral infection and replication in the upper and lower airways. These nanoparticles are a promising vaccine candidate to curtail the SARS-CoV-2 pandemic.
Key Findings
1
A two-component protein-based nanoparticle vaccine displays multiple copies of the SARS-CoV-2 spike protein.
2
The nanoparticle vaccine is identified as a promising candidate for limiting SARS-CoV-2 transmission and disease.
3
The vaccine induces potent neutralizing antibody responses in mice, rabbits, and cynomolgus macaques.
4
Vaccination protects cynomolgus macaques against high-dose SARS-CoV-2 challenge.
5
Vaccine-induced immunity strongly reduces viral infection and replication in both upper and lower airways of macaques.
Research Object
The two-component protein-based nanoparticle vaccine displaying multiple copies of the SARS-CoV-2 spike protein
Research Subject
Its immunogenicity and protective efficacy against SARS-CoV-2 infection and replication in the airways of cynomolgus macaques
Publication Details
Publication Date
2021-01-25
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