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

NVX-CoV2373 vaccine protects cynomolgus macaque upper and lower airways against SARS-CoV-2 challenge.
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DOI:
10.1016/j.vaccine.2020.10.064
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发表时间:
2020-11-25
期刊:
影响因子:
5.5
通讯作者:
Smith G
Smith G
中科院分区:
医学3区
文献类型:
--
作者:
Guebre-Xabier M;Patel N;Tian JH;Zhou B;Maciejewski S;Lam K;Portnoff AD;Massare MJ;Frieman MB;Piedra PA;Ellingsworth L;Glenn G;Smith G

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全长SARS-CoV-2融合前加标Matrix-M™(NVX-CoV 2373)疫苗。在猕猴中诱导hACE 2受体阻断和中和抗体。疫苗可防止SARS-CoV-2在鼻和肺中复制。NVX-CoV 2373接种的猕猴中不存在肺部病理学。为了控制SARS-CoV-2的全球传播和预防COVID-19,迫切需要一种安全和保护性的疫苗。在这里,我们报告了SARS-CoV-2亚单位疫苗(NVX-CoV 2373)的免疫原性和保护效力,该疫苗由融合前构象稳定的全长SARS-CoV-2刺突(S)糖蛋白制备。用NVX-CoV 2373和基于皂苷的Matrix-M™佐剂免疫的食蟹猴(Macaca fascicularis)诱导抗S抗体,所述抗S抗体中和并阻断与人血管紧张素转化酶2(hACE 2)受体的结合。SARS-CoV-2经鼻和气管内攻击后,免疫猕猴对上、下感染和肺部疾病具有保护作用。这些结果支持正在进行的NVX-CoV 2327疫苗(NCT 04368988)安全性和免疫原性的I/II期临床研究。
Full-length SARS-CoV-2 prefusion spike with Matrix-M™ (NVX-CoV2373) vaccine. Induced hACE2 receptor blocking and neutralizing antibodies in macaques. Vaccine protected against SARS-CoV-2 replication in the nose and lungs. Absence of pulmonary pathology in NVX-CoV2373 vaccinated macaques. 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).
Chadox1 NCOV-19疫苗可防止恒河猕猴中的SARS-COV-2肺炎。
DOI: 10.1038/s41586-020-2608-y
发表时间: 2020-10
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影响因子: 64.8
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发表时间: 2020-12-10
影响因子: 158.5
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期刊: SCIENCE
影响因子: 56.9
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发表时间: 2020-08-14
期刊: SCIENCE
影响因子: 56.9
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通讯作者: Barouch, Dan H.