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| タイトル | Molecular basis of Ad5-nCoV vaccine-induced immunogenicity. |
|---|---|
| ジャーナル・号・ページ | Structure, Vol. 33, Issue 5, Page 858-868.e5, Year 2025 |
| 掲載日 | 2025年5月1日 |
著者 | Dongyang Dong / Yutong Song / Shipo Wu / Busen Wang / Cheng Peng / Weiping Zhang / Weizheng Kong / Zheyuan Zhang / Jingwen Song / Li-Hua Hou / Sai Li / ![]() |
| PubMed 要旨 | Ad5-nCoV (Convidecia) is listed for emergency use against COVID-19 by the World Health Organization (WHO) and has been globally administered to millions of people. It utilizes human adenovirus 5 (Ad5) ...Ad5-nCoV (Convidecia) is listed for emergency use against COVID-19 by the World Health Organization (WHO) and has been globally administered to millions of people. It utilizes human adenovirus 5 (Ad5) replication-incompetent vector to deliver the spike (S) protein gene from various SARS-CoV-2 strains. Despite promising clinical data, the molecular mechanism underlying its high immunogenicity and adverse reactions remain incompletely understood. Here, we primarily applied cryo-electron tomography (cryo-ET), fluorescence microscopy and mass spectrometry to analyze the Ad5-nCoV_Wu and Ad5-nCoV_O vaccine-induced S antigens. These antigens encode the unmodified SARS-CoV-2 Wuhan-Hu-1 S gene and the stabilized Omicron S gene, respectively. Our findings highlight the structural integrity, antigenicity, and dense distribution on cell membrane of the vaccine-induced S proteins. Ad5-nCoV_O induced S proteins exhibit improved stability and reduced syncytia formation among inoculated cells. Our work demonstrates that Ad5-nCoV is a prominent platform for antigen induction and cryo-ET can be a useful technique for vaccine characterization and development. |
リンク | Structure / PubMed:40112804 |
| 手法 | EM (サブトモグラム平均) |
| 解像度 | 15.0 - 22.0 Å |
| 構造データ | ![]() EMDB-60599: SARS-CoV-2 spike (Wuhan-Hu-1) in the closed conformation induced by Ad5-nCoV vaccine ![]() EMDB-60600: SARS-CoV-2 spike (Wuhan-Hu-1) in the One-RBD-up conformation induced by Ad5-nCoV vaccine ![]() EMDB-60601: SARS-CoV-2 spike (Omicron) in the closed conformation induced by Ad5-nCoV vaccine ![]() EMDB-60602: SARS-CoV-2 spike (Omicron) in the One-RBD-up conformation induced by Ad5-nCoV vaccine |
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