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-Structure paper
| タイトル | Vaccination with different group 2 influenza subtypes alters epitope targeting and breadth of hemagglutinin stem-specific human B cells. |
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| ジャーナル・号・ページ | Sci Transl Med, Vol. 17, Issue 779, Page eadr8373, Year 2025 |
| 掲載日 | 2025年1月1日 |
著者 | Grace E Mantus / Ankita J Chopde / Jason Gorman / Lauren Y Cominsky / Amine Ourahmane / Adrian Creanga / Geoffrey D Shimberg / Rebecca A Gillespie / David J Van Wazer / Tongqing Zhou / Suprabhath R Gajjala / Connor Williams / Emma Maestle / Douglas S Reed / Leonid Serebryannyy / Pamela Costner / Lasonji Holman / Joseph P Casazza / Richard A Koup / Lesia K Dropulic / Peter D Kwong / Adrian B McDermott / Masaru Kanekiyo / Sarah F Andrews / ![]() |
| PubMed 要旨 | The conserved influenza hemagglutinin stem, which is a target of cross-neutralizing antibodies, is now used in vaccine strategies focused on protecting against influenza pandemics. Antibody responses ...The conserved influenza hemagglutinin stem, which is a target of cross-neutralizing antibodies, is now used in vaccine strategies focused on protecting against influenza pandemics. Antibody responses to group 1 stem have been extensively characterized, but little is known about group 2. Here, we characterized the stem-specific repertoire of individuals vaccinated with one of three group 2 influenza subtypes (H3, H7, or H10). Epitope mapping revealed two epitope supersites on the group 2 stem. Antibodies targeting the central epitope were broadly cross-reactive, whereas antibodies targeting the lower epitope had narrower breadth but higher potency against H3 subtypes. The ratio of B cells targeting each of the supersites varied with the vaccine subtype, leading to differences in the cross-reactivity of the B cell response. Our findings suggest that vaccine strategies targeting both group 2 stem epitopes would be complementary, eliciting broader and more potent protection against both seasonal and pandemic influenza strains. |
リンク | Sci Transl Med / PubMed:39742506 |
| 手法 | EM (単粒子) |
| 解像度 | 3.65 - 3.96 Å |
| 構造データ | EMDB-44901, PDB-9bu6: EMDB-44903, PDB-9bu8: |
| 化合物 | ![]() ChemComp-NAG: |
| 由来 |
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キーワード | VIRAL PROTEIN/IMMUNE SYSTEM / Vaccine / VIRAL PROTEIN-IMMUNE SYSTEM complex / IMMUNE SYSTEM |
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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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