Open AccessConvergent structural features of respiratory syncytial virus neutralizing antibodies and plasticity of the site V epitope on prefusion F
Author(s) -
Wayne Harshbarger,
Sai Tian,
Newton Wahome,
Ankita Balsaraf,
Deep Bhattacharya,
Desheng Jiang,
R. Pandey,
Kunal Tungare,
Kristian Friedrich,
N. Mehzabeen,
Marco Biancucci,
Diana Chinchilla-Olszar,
Corey P. Mallett,
Ying Huang,
Zihao Wang,
Matthew J. Bottomley,
E. Malito,
Sumana Chandramouli
Publication year - 2020
Publication title -
plos pathogens
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.719
H-Index - 206
eISSN - 1553-7374
pISSN - 1553-7366
DOI - 10.1371/journal.ppat.1008943
Subject(s) - immunogenicity , epitope , virology , biology , antibody , neutralizing antibody , glycoprotein , virus , immunology , microbiology and biotechnology
Respiratory syncytial virus (RSV) is a global public health burden for which no licensed vaccine exists. To aid vaccine development via increased understanding of the protective antibody response to RSV prefusion glycoprotein F (PreF), we performed structural and functional studies using the human neutralizing antibody (nAb) RSB1. The crystal structure of PreF complexed with RSB1 reveals a conformational, pre-fusion specific site V epitope with a unique cross-protomer binding mechanism. We identify shared structural features between nAbs RSB1 and CR9501, elucidating for the first time how diverse germlines obtained from different subjects can develop convergent molecular mechanisms for recognition of the same PreF site of vulnerability. Importantly, RSB1-like nAbs were induced upon immunization with PreF in naturally-primed cattle. Together, this work reveals new details underlying the immunogenicity of site V and further supports PreF-based vaccine development efforts.