title: Induction of antigen-specific T cell responses in human volunteers after intranasal immunization with a whole-cell pertussis vaccine.
abstract: We have studied the ability of an intranasally administered whole-cell pertussis vaccine (WCP) without adjuvant to induce antigen-specific T cell responses in humans. Six adult volunteers were given a vaccine dose (corresponding to 250 microg protein) by nasal spray four times at weekly intervals, and peripheral blood mononuclear cells were assayed for antigen-specific proliferative T cell responses. All six vaccinees had a WCP-specific response, which in four of them remained elevated throughout the 2 month study. All participants also responded to the filamentous haemagglutinin (FHA) antigen, and four of them responded to inactivated pertussis toxin (PTd). A significant correlation between T cell proliferation against WCP and WCP-specific IgA antibody levels in nasal secretions was observed. This demonstrates that intranasal administration of a non-proliferating bacterial vaccine without any additional mucosal adjuvant can induce vaccine-specific T cell responses related to mucosal IgA secretion.
authors.affiliation: Department of Vaccinology, National Institute of Public Health, P.O. Box 4404 Torshov, N-0403, Oslo, Norway. aud.herland.berstad@folkehelsa.no
authors.forename: A K
authors.initials: AK
authors.lastname: Berstad
authors.forename: F
authors.initials: F
authors.lastname: Oftung
authors.forename: G E
authors.initials: GE
authors.lastname: Korsvold
authors.forename: I L
authors.initials: IL
authors.lastname: Haugen
authors.forename: L O
authors.initials: LO
authors.lastname: Froholm
authors.forename: J
authors.initials: J
authors.lastname: Holst
authors.forename: B
authors.initials: B
authors.lastname: Haneberg
mesh_terms: D018829:Adhesins, Bacterial / Q000276:immunology; D000281:Administration, Intranasal; D000328:Adult; D000907:Antibodies, Bacterial / Q000096:biosynthesis; D000942:Antigens, Bacterial; D001886:Bordetella pertussis / Q000276:immunology; D005260:Female; D006388:Hemagglutinins / Q000276:immunology; D006801:Humans; D018928:Immunity, Mucosal; D007070:Immunoglobulin A / Q000096:biosynthesis; D007074:Immunoglobulin G / Q000096:biosynthesis; D066298:In Vitro Techniques; D008213:Lymphocyte Activation; D008297:Male; D008875:Middle Aged; D037342:Pertussis Toxin; D010567:Pertussis Vaccine / Q000008:administration & dosage* / Q000276:immunology; D013601:T-Lymphocytes / Q000276:immunology*; D010566:Virulence Factors, Bordetella / Q000276:immunology
chemical_list: D018829:Adhesins, Bacterial; D000907:Antibodies, Bacterial; D000942:Antigens, Bacterial; D006388:Hemagglutinins; D007070:Immunoglobulin A; D007074:Immunoglobulin G; D010567:Pertussis Vaccine; D010566:Virulence Factors, Bordetella; C065273:filamentous hemagglutinin adhesin, Bordetella pertussis; D037342:Pertussis Toxin