在研机构- |
最高研发阶段无进展临床2期 |
首次获批日期- |
最高研发阶段(中国)- |
特殊审评- |
开始日期2021-11-23 |
申办/合作机构 |
开始日期2021-05-20 |
申办/合作机构 |
Immunization via the respiratory route is predicted to increase the effectiveness of a SARS-CoV-2 vaccine. We evaluated the immunogenicity and protective efficacy of one or two doses of a live-attenuated murine pneumonia virus vector expressing SARS-CoV-2 prefusion-stabilized spike protein (MPV/S-2P), delivered intranasally/intratracheally to rhesus macaques. A single dose of MPV/S-2P was highly immunogenic, and a second dose increased the magnitude and breadth of the mucosal and systemic anti-S antibody responses and increased levels of dimeric anti-S IgA in the airways. MPV/S-2P also induced S-specific CD4+ and CD8+ T-cells in the airways that differentiated into large populations of tissue-resident memory cells within a month after the boost. One dose induced substantial protection against SARS-CoV-2 challenge, and two doses of MPV/S-2P were fully protective against SARS-CoV-2 challenge virus replication in the airways. A prime/boost immunization with a mucosally-administered live-attenuated MPV vector could thus be highly effective in preventing SARS-CoV-2 infection and replication.
适应症 | 最高研发状态 | 国家/地区 | 公司 | 日期 |
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新型冠状病毒感染 | 临床2期 | 墨西哥 | 2021-11-23 |
研究 | 分期 | 人群特征 | 评价人数 | 分组 | 结果 | 评价 | 发布日期 |
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No Data |