title: Role of the polymorphic region 1 of the Bordetella pertussis protein pertactin in immunity.
abstract: In several countries pertussis is re-emerging, despite a high vaccination coverage. It is suggested that antigenic divergence between Bordetella pertussis vaccine strains and circulating strains, in particular with respect to pertactin, has contributed to pertussis re-emergence. Polymorphism in pertactin is essentially limited to region 1, which is composed of repeats and is located adjacent to an Arg-Gly-Asp motif implicated in adherence. Evidence is provided for the immunological relevance of polymorphism in region 1. Region 1 was found to contain a B-cell epitope recognized in both humans and mice. Furthermore, variation in region 1 affected antibody binding and, in a mouse respiratory infection model, the efficacy of a whole-cell vaccine. Moreover, passive and active immunization indicated that region 1 confers protective immunity. An mAb directed against a linear conserved epitope conferred cross-immunity against isolates with distinct pertactin variants. The results indicate an important role of region 1 of pertactin in immunity.
authors.affiliation: Research Laboratory for Infectious Diseases, National Institute of Public Health and the Environment, PO Box 1, 3720 BA Bilthoven, The Netherlands.
authors.forename: A J
authors.initials: AJ
authors.lastname: King
authors.forename: G
authors.initials: G
authors.lastname: Berbers
authors.forename: H F
authors.initials: HF
authors.lastname: van Oirschot
authors.forename: P
authors.initials: P
authors.lastname: Hoogerhout
authors.forename: K
authors.initials: K
authors.lastname: Knipping
authors.forename: F R
authors.initials: FR
authors.lastname: Mooi
mesh_terms: D000595:Amino Acid Sequence; D000818:Animals; D000907:Antibodies, Bacterial / Q000096:biosynthesis / Q000276:immunology; D000911:Antibodies, Monoclonal / Q000276:immunology; D001425:Bacterial Outer Membrane Proteins / Q000235:genetics / Q000276:immunology*; D001428:Bacterial Vaccines / Q000276:immunology; D001483:Base Sequence; D001886:Bordetella pertussis / Q000235:genetics / Q000276:immunology* / Q000472:pathogenicity; D003429:Cross Reactions; D004269:DNA, Bacterial; D004195:Disease Models, Animal; D018604:Epitope Mapping; D018985:Epitopes, B-Lymphocyte / Q000276:immunology; D006801:Humans; D051379:Mice; D008969:Molecular Sequence Data; D011110:Polymorphism, Genetic; D017434:Protein Structure, Tertiary; D010566:Virulence Factors, Bordetella; D014917:Whooping Cough / Q000276:immunology
chemical_list: D000907:Antibodies, Bacterial; D000911:Antibodies, Monoclonal; D001425:Bacterial Outer Membrane Proteins; D001428:Bacterial Vaccines; D004269:DNA, Bacterial; D018985:Epitopes, B-Lymphocyte; D010566:Virulence Factors, Bordetella; C068929:pertactin