National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID)
R01 AI165475
米国
Howard Hughes Medical Institute (HHMI)
Emerging Pathogens Initiative
米国
引用
ジャーナル: J Exp Med / 年: 2025 タイトル: Identification of a seasonal influenza vaccine-induced broadly protective neuraminidase antibody. 著者: Anders Madsen / Nisreen M A Okba / Tossapol Pholcharee / Hanover C Matz / Huibin Lv / Maria Ibanez Trullen / Julian Q Zhou / Jackson S Turner / Aaron J Schmitz / Fangjie Han / Stephen C ...著者: Anders Madsen / Nisreen M A Okba / Tossapol Pholcharee / Hanover C Matz / Huibin Lv / Maria Ibanez Trullen / Julian Q Zhou / Jackson S Turner / Aaron J Schmitz / Fangjie Han / Stephen C Horvath / Sameer Kumar Malladi / Florian Krammer / Nicholas C Wu / Ali H Ellebedy / 要旨: Seasonal influenza viruses cause significant global illness and death annually, and the potential spillover of avian H5N1 poses a serious pandemic threat. Traditional influenza vaccines target the ...Seasonal influenza viruses cause significant global illness and death annually, and the potential spillover of avian H5N1 poses a serious pandemic threat. Traditional influenza vaccines target the variable hemagglutinin (HA) protein, necessitating annual vaccine updates, while the slower-evolving neuraminidase (NA) presents a promising target for broader protection. We investigated the breadth of anti-NA B cell responses to seasonal influenza vaccination in humans. We screened plasmablast-derived monoclonal antibodies (mAbs) from three donors, identifying 11 clonally distinct NA mAbs from 268 vaccine-specific mAbs. Among these, mAb-297 showed exceptionally broad NA inhibition, effectively protecting mice against lethal doses of influenza A and B viruses, including H5N1. We show that mAb-297 targets a common binding motif in the conserved NA active site. Our findings show that while B cell responses against NA following conventional, egg-derived influenza vaccines are rare, inducing broadly protective NA antibodies through such vaccination remains feasible, highlighting the importance of improving NA immunogens to develop a more broadly protective influenza vaccine.
全体 : A complex of neuraminidase from influenza A A/Victoria/4897/2022 ...
全体
名称: A complex of neuraminidase from influenza A A/Victoria/4897/2022 with human Fab 297
要素
複合体: A complex of neuraminidase from influenza A A/Victoria/4897/2022 with human Fab 297
タンパク質・ペプチド: Neuraminidase
タンパク質・ペプチド: Variable domain of the heavy chain of Fab 297
タンパク質・ペプチド: Variable domain of the light chain of Fab 297
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超分子 #1: A complex of neuraminidase from influenza A A/Victoria/4897/2022 ...
超分子
名称: A complex of neuraminidase from influenza A A/Victoria/4897/2022 with human Fab 297 タイプ: complex / ID: 1 / 親要素: 0 / 含まれる分子: all 詳細: Neuraminidase was expressed recombinantly in SF9 cells. Fab 297 was expressed recombinantly in Expi293F cells.
モデルのタイプ: OTHER 詳細: Initial model was built directly into the map using automated model building algorithm ModelAngelo (DOI: 10.1038/s41586-024-07215-4)