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-Structure paper
| タイトル | The N terminus of H3-influenza hemagglutinin as a site-of-vulnerability to neutralizing antibody. |
|---|---|
| ジャーナル・号・ページ | Structure, Vol. 33, Issue 11, Page 1820-11830.e4, Year 2025 |
| 掲載日 | 2025年11月6日 |
著者 | Reda Rawi / Nicholas C Morano / Crystal Sao-Fong Cheung / Haijuan Du / Jason Gorman / Madhu Prabhakaran / Jordan E Becker / Tatsiana Bylund / Sam Charaf / Xuejun Chen / Myungjin Lee / Darcy R Harris / Adam S Olia / Li Ou / Lingshu Wang / Shuishu Wang / Baoshan Zhang / Masaru Kanekiyo / Adrian B McDermott / Tongqing Zhou / Lawrence Shapiro / Peter D Kwong / ![]() |
| PubMed 要旨 | The N terminus of the H3 subtype of influenza virus hemagglutinin is ∼10 residues longer than the N termini of most other hemagglutinins. As conserved, exposed, and linear regions may be good ...The N terminus of the H3 subtype of influenza virus hemagglutinin is ∼10 residues longer than the N termini of most other hemagglutinins. As conserved, exposed, and linear regions may be good vaccine targets, we investigated the vaccine utility of the extended H3-N terminus. First, we identified antibody 5E10, for which structure and binding analyses revealed recognition of the H3-N terminus. Second, we immunized mice with immunogens incorporating the H3-N terminus, boosted with hemagglutinin trimer, and isolated antibodies from immunogen-elicited B cells that bound both H3-N terminus and hemagglutinin trimer. However, hemagglutinin-complex structures of two such antibodies, 3864-6 and 3864-10, that neutralized H3-influenza strains, revealed only peripheral recognition of the hemagglutinin N terminus. Collectively, these results reveal the N terminus of H3 hemagglutinin to be a suboptimal vaccine target and suggest that-in addition to being conserved, flexible, and accessible-other factors influence the elicitation of potent broadly neutralizing responses. |
リンク | Structure / PubMed:40816277 / PubMed Central |
| 手法 | EM (単粒子) / X線回折 |
| 解像度 | 2.63 - 3.89 Å |
| 構造データ | EMDB-48078, PDB-9ei8: EMDB-48079, PDB-9ei9: ![]() PDB-9e69: |
| 化合物 | ![]() ChemComp-NAG: |
| 由来 |
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キーワード | IMMUNE SYSTEM / antibody / HA / influenza / flu / N-term / H3 / sing16 |
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influenza a virus (A型インフルエンザウイルス)
homo sapiens (ヒト)
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