- EMDB-41523: Polyclonal immune complex of Fab binding the H2 HA from serum of ... -
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データベース: EMDB / ID: EMD-41523
タイトル
Polyclonal immune complex of Fab binding the H2 HA from serum of subject 2-1 at week 4
マップデータ
Negative stain map of global refinement of particle stack used to sort polyclonal responses to H2 HA from human subject 2-1 at week 4Negative stain map of half map A for global refinement of particle
試料
複合体: Polyclonal immune complex of Fab binding the H2 HA from serum of subject 2-1 at week 4
キーワード
influenza / hemagglutinin / H2 / polyclonal complex / Fab complex / viral fusion protein / VIRAL PROTEIN
ジャーナル: Cell Rep / 年: 2024 タイトル: Immune memory shapes human polyclonal antibody responses to H2N2 vaccination. 著者: Yuhe R Yang / Julianna Han / Hailee R Perrett / Sara T Richey / Alesandra J Rodriguez / Abigail M Jackson / Rebecca A Gillespie / Sarah O'Connell / Julie E Raab / Lauren Y Cominsky / Ankita ...著者: Yuhe R Yang / Julianna Han / Hailee R Perrett / Sara T Richey / Alesandra J Rodriguez / Abigail M Jackson / Rebecca A Gillespie / Sarah O'Connell / Julie E Raab / Lauren Y Cominsky / Ankita Chopde / Masaru Kanekiyo / Katherine V Houser / Grace L Chen / Adrian B McDermott / Sarah F Andrews / Andrew B Ward / 要旨: Influenza A virus subtype H2N2, which caused the 1957 influenza pandemic, remains a global threat. A recent phase 1 clinical trial investigating a ferritin nanoparticle vaccine displaying H2 ...Influenza A virus subtype H2N2, which caused the 1957 influenza pandemic, remains a global threat. A recent phase 1 clinical trial investigating a ferritin nanoparticle vaccine displaying H2 hemagglutinin (HA) in H2-naive and H2-exposed adults enabled us to perform comprehensive structural and biochemical characterization of immune memory on the breadth and diversity of the polyclonal serum antibody response elicited. We temporally map the epitopes targeted by serum antibodies after vaccine prime and boost, revealing that previous H2 exposure results in higher responses to the variable HA head domain. In contrast, initial responses in H2-naive participants are dominated by antibodies targeting conserved epitopes. We use cryoelectron microscopy and monoclonal B cell isolation to describe the molecular details of cross-reactive antibodies targeting conserved epitopes on the HA head, including the receptor-binding site and a new site of vulnerability deemed the medial junction. Our findings accentuate the impact of pre-existing influenza exposure on serum antibody responses post-vaccination.
ダウンロード / ファイル: emd_41523.map.gz / 形式: CCP4 / 大きさ: 15.6 MB / タイプ: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
注釈
Negative stain map of global refinement of particle stack used to sort polyclonal responses to H2 HA from human subject 2-1 at week 4Negative stain map of half map A for global refinement of particle