Abstract:
:The present vaccine against influenza virus has the inevitable risk of antigenic discordance between the vaccine and the circulating strains, which diminishes vaccine efficacy. This necessitates new approaches that provide broader protection against influenza. Here we designed a vaccine using the hypervariable receptor-binding domain (RBD) of viral hemagglutinin displayed on a nanoparticle (np) able to elicit antibody responses that neutralize H1N1 influenza viruses spanning over 90 years. Co-display of RBDs from multiple strains across time, so that the adjacent RBDs are heterotypic, provides an avidity advantage to cross-reactive B cells. Immunization with the mosaic RBD-np elicited broader antibody responses than those induced by an admixture of nanoparticles encompassing the same set of RBDs as separate homotypic arrays. Furthermore, we identified a broadly neutralizing monoclonal antibody in a mouse immunized with mosaic RBD-np. The mosaic antigen array signifies a unique approach that subverts monotypic immunodominance and allows otherwise subdominant cross-reactive B cell responses to emerge.
journal_name
Nat Immunoljournal_title
Nature immunologyauthors
Kanekiyo M,Joyce MG,Gillespie RA,Gallagher JR,Andrews SF,Yassine HM,Wheatley AK,Fisher BE,Ambrozak DR,Creanga A,Leung K,Yang ES,Boyoglu-Barnum S,Georgiev IS,Tsybovsky Y,Prabhakaran MS,Andersen H,Kong WP,Baxa U,Zephidoi
10.1038/s41590-018-0305-xsubject
Has Abstractpub_date
2019-03-01 00:00:00pages
362-372issue
3eissn
1529-2908issn
1529-2916pii
10.1038/s41590-018-0305-xjournal_volume
20pub_type
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