Autoreactivity profiles of influenza hemagglutinin broadly neutralizing antibodies.

ABSTRACT: Epitope-focused approaches for selective clonal induction of broadly neutralizing antibodies (bnAbs) inform most current vaccine strategies for influenza virus and other rapidly evolving pathogens. The two conserved epitopes on the influenza hemagglutinin (HA) - the "stem" and the receptor-binding site (RBS) on the "head" - are the focus of the current "universal" influenza vaccine development efforts. Because stem-directed serum bnAbs are much less abundant than head-directed ones, we hypothesized that the HA stem bnAbs may be autoreactive and thus eliminated through the mechanisms of self-tolerance. We compared autoreactivity profiles of a set of stem and head-directed bnAbs. Most of the stem bnAbs we examined bound autoantigens; several showed staining of HEp-2 cells. A smaller proporti

SUBMITTER: Bajic G 

PROVIDER: S-EPMC6401307 | biostudies-literature | 2019 Mar

REPOSITORIES: biostudies-literature