Abstract
Respiratory syncytial virus (RSV) is a worldwide public health concern for which no vaccine is available. Elucidation of the prefusion structure of the RSV F glycoprotein and its identification as the main target of neutralizing antibodies have provided new opportunities for development of an effective vaccine. Here, we describe the structure-based design of a self-assembling protein nanoparticle presenting a prefusion-stabilized variant of the F glycoprotein trimer (DS-Cav1) in a repetitive array on the nanoparticle exterior. The two-component nature of the nanoparticle scaffold enabled the production of highly ordered, monodisperse immunogens that display DS-Cav1 at controllable density. In mice and nonhuman primates, the full-valency nanoparticle immunogen displaying 20 DS-Cav1 trimers induced neutralizing antibody responses ∼10-fold higher than trimeric DS-Cav1. These results motivate continued development of this promising nanoparticle RSV vaccine candidate and establish computationally designed two-component nanoparticles as a robust and customizable platform for structure-based vaccine design.
Original language | English |
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Pages (from-to) | 1420-1431 |
Journal | Cell |
Volume | 176 |
Issue number | 6 |
DOIs | |
Publication status | Published - 7 Mar 2019 |
Externally published | Yes |
Funding
The authors wish to thank Ratika Krishnamurty for project management support and helpful suggestions, David Jarrossay for scientific advice with flow cytometry data acquisition and cell sorting, the IRB animal house for supporting immunization studies, Drs. Mats Spångberg and Bengt Eriksson and their personnel at the Astrid Fagraeus laboratory at Karolinska Institutet for expert assistance and care of the nonhuman primates, Daniel Ellis for advice in protein production and in vitro assembly, Barney Graham for helpful discussions and advice, and Amy Weiner and Lynda Stuart for support and advice. This work was supported by the Bill and Melinda Gates Foundation ( OPP1120319 to D.B., N.P.K., L.P., and K.L.; OPP1126258 to K.K.L.; OPP1162875 to P.D.), the state of Washington (to D.B.), the Howard Hughes Medical Institute (to D.B.), the Netherlands Organization for Scientific Research (NWO; Rubicon 019.2015.2.310.006 to J.S.), the European Molecular Biology Organisation (EMBO; ALTF 933-2015 to J.S.), the Swedish Research Council (Vetenskapsrådet 2015-02608 to K.L.), an intramural faculty salary grant from Karolinska Institutet (to S.O.), NIAID ( HHSN272201700059C to D.V.), NIGMS ( R01GM120553 to D.V.), a Pew Biomedical Scholars Award (to D.V.), and an Investigators in the Pathogenesis of Infectious Disease Award from the Burroughs Wellcome Fund (to D.V.).
Keywords
- computational protein design
- nanoparticles
- neutralizing antibodies
- respiratory syncytial virus
- self-assembly
- vaccines