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-Structure paper
タイトル | Eliciting a single amino acid change by vaccination generates antibody protection against group 1 and group 2 influenza A viruses. |
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ジャーナル・号・ページ | Immunity, Vol. 57, Issue 5, Page 1141-1159.e11, Year 2024 |
掲載日 | 2024年5月14日 |
著者 | Rashmi Ray / Faez Amokrane Nait Mohamed / Daniel P Maurer / Jiachen Huang / Berk A Alpay / Larance Ronsard / Zhenfei Xie / Julianna Han / Monica Fernandez-Quintero / Quynh Anh Phan / Rebecca L Ursin / Mya Vu / Kathrin H Kirsch / Thavaleak Prum / Victoria C Rosado / Thalia Bracamonte-Moreno / Vintus Okonkwo / Julia Bals / Caitlin McCarthy / Usha Nair / Masaru Kanekiyo / Andrew B Ward / Aaron G Schmidt / Facundo D Batista / Daniel Lingwood / |
PubMed 要旨 | Broadly neutralizing antibodies (bnAbs) targeting the hemagglutinin (HA) stem of influenza A viruses (IAVs) tend to be effective against either group 1 or group 2 viral diversity. In rarer cases, ...Broadly neutralizing antibodies (bnAbs) targeting the hemagglutinin (HA) stem of influenza A viruses (IAVs) tend to be effective against either group 1 or group 2 viral diversity. In rarer cases, intergroup protective bnAbs can be generated by human antibody paratopes that accommodate the conserved glycan differences between the group 1 and group 2 stems. We applied germline-engaging nanoparticle immunogens to elicit a class of cross-group bnAbs from physiological precursor frequency within a humanized mouse model. Cross-group protection depended on the presence of the human bnAb precursors within the B cell repertoire, and the vaccine-expanded antibodies enriched for an N55T substitution in the CDRH2 loop, a hallmark of the bnAb class. Structurally, this single mutation introduced a flexible fulcrum to accommodate glycosylation differences and could alone enable cross-group protection. Thus, broad IAV immunity can be expanded from the germline repertoire via minimal antigenic input and an exceptionally simple antibody development pathway. |
リンク | Immunity / PubMed:38670113 / PubMed Central |
手法 | EM (単粒子) / X線回折 |
解像度 | 2.7 - 4.02 Å |
構造データ | EMDB-42528, PDB-8ut3: EMDB-42529, PDB-8ut4: EMDB-42530, PDB-8ut5: EMDB-42531, PDB-8ut6: EMDB-42532, PDB-8ut7: EMDB-42533, PDB-8ut8: EMDB-42534, PDB-8ut9: EMDB-42535: CryoEM structure of A/Perth/16/2009 H3 EMDB-42536: CryoEM map of A/Shanghai/1/2013 H7 HA PDB-8uwa: |
化合物 | ChemComp-NAG: |
由来 |
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キーワード | VIRAL PROTEIN/IMMUNE SYSTEM / Flu Hemagglutinin / Central stem epitope / VH1-18 / VIRAL PROTEIN / VIRAL PROTEIN-IMMUNE SYSTEM complex / cryoEMPEM / antibody / stem / influenza / hemagglutinin |