Portal de Periódicos da CAPES

NVX-CoV2373 vaccine protects cynomolgus macaque upper and lower airways against SARS-CoV-2 challenge

2020; Elsevier BV; Volume: 38; Issue: 50 Linguagem: Inglês

10.1016/j.vaccine.2020.10.064

1873-2518

Mimi Guebre‐Xabier, Nita Patel, Jing-Hui Tian, Bin Zhou, Sonia Maciejewski, Kristal Lam, Alyse D. Portnoff, Michael J. Massare, Matthew B. Frieman, Pedro A. Piedra, Larry Ellingsworth, Gregory M. Glenn, Gale Smith,

Respiratory viral infections research

There is an urgent need for a safe and protective vaccine to control the global spread of SARS-CoV-2 and prevent COVID-19. Here, we report the immunogenicity and protective efficacy of a SARS-CoV-2 subunit vaccine (NVX-CoV2373) produced from the full-length SARS-CoV-2 spike (S) glycoprotein stabilized in the prefusion conformation. Cynomolgus macaques (Macaca fascicularis) immunized with NVX-CoV2373 and the saponin-based Matrix-M™ adjuvant induced anti-S antibody that was neutralizing and blocked binding to the human angiotensin-converting enzyme 2 (hACE2) receptor. Following intranasal and intratracheal challenge with SARS-CoV-2, immunized macaques were protected against upper and lower infection and pulmonary disease. These results support ongoing phase 1/2 clinical studies of the safety and immunogenicity of NVX-CoV2327 vaccine (NCT04368988).