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Helicobacter pylori flagella: antigenic profile and protective immunity
Authors:Skene Caroline  Young Anna  Every Alison  Sutton Philip
Institution:Centre for Animal Biotechnology, University of Melbourne, Melbourne, Australia.
Abstract:Reproducible induction of sterilizing immunity, essential for an effective Helicobacter pylori vaccine, remains elusive. As motility is essential for gastric colonization by Helicobacter, we evaluated whether a vaccine targeting flagella induces improved protection. Mice immunized with a vaccine enriched for H. pylori flagella sheath proteins exhibited significantly reduced colonization, equivalent to that observed in mice immunized with whole-cell lysate. Two-dimensional profiles indicated that flagella contain proteins not evident in whole-cell lysate. Moreover, comparison of Western blot profiles using whole-cell lysate antisera revealed striking differences in antigenicity.
Keywords:Helicobacter pylori            flagella sheath  motility  vaccine  protective antigen
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