title: Nasal vaccination with P6 outer membrane protein and alpha-galactosylceramide induces nontypeable Haemophilus influenzae-specific protective immunity associated with NKT cell activation and dendritic cell expansion in nasopharynx.
abstract: The efficacy of alpha-galactosylceramide (alpha-GalCer) as a mucosal adjuvant was examined. Mice were immunized intranasally with nontypeable Haemophilus influenzae (NTHi) P6 protein and alpha-GalCer. P6-specific antibody responses in the form of P6-specific IgA in nasal washes and serum IgG titers were significantly elevated. Splenic CD4(+) T cells expressed P6-specific Th1 and Th2 cytokine mRNA. In addition, NTHi was quantified in nasal washes following NTHi challenges, and the clearance of NTHi from the nasopharynx was also enhanced. These results indicate that alpha-GalCer might be an effective mucosal adjuvant.
authors.affiliation: Department of Otolaryngology, Oita University Faculty of Medicine, 1-1 Idaigaoka, Hazama-machi, Yufu, Oita 879-5593, Japan.
authors.forename: Kenji
authors.initials: K
authors.lastname: Noda
authors.forename: Satoru
authors.initials: S
authors.lastname: Kodama
authors.forename: Shingo
authors.initials: S
authors.lastname: Umemoto
authors.forename: Nobuyuki
authors.initials: N
authors.lastname: Abe
authors.forename: Takashi
authors.initials: T
authors.lastname: Hirano
authors.forename: Masashi
authors.initials: M
authors.lastname: Suzuki
mesh_terms: D000276:Adjuvants, Immunologic / Q000494:pharmacology; D000281:Administration, Intranasal; D000818:Animals; D000907:Antibodies, Bacterial / Q000097:blood / Q000276:immunology; D000917:Antibody Formation; D001425:Bacterial Outer Membrane Proteins / Q000276:immunology*; D015496:CD4-Positive T-Lymphocytes / Q000276:immunology; D003713:Dendritic Cells / Q000276:immunology*; D005699:Galactosylceramides / Q000276:immunology*; D006192:Haemophilus Infections / Q000276:immunology / Q000517:prevention & control*; D018073:Haemophilus Vaccines / Q000276:immunology*; D006193:Haemophilus influenzae / Q000276:immunology; D018928:Immunity, Mucosal; D007070:Immunoglobulin A / Q000276:immunology; D007074:Immunoglobulin G / Q000097:blood; D051379:Mice; D008807:Mice, Inbred BALB C; D009305:Nasopharynx / Q000276:immunology; D055611:Natural Killer T-Cells / Q000276:immunology*
chemical_list: D000276:Adjuvants, Immunologic; D000907:Antibodies, Bacterial; D001425:Bacterial Outer Membrane Proteins; D005699:Galactosylceramides; D018073:Haemophilus Vaccines; D007070:Immunoglobulin A; D007074:Immunoglobulin G; C069990:P6 outer membrane protein, Haemophilus; C493154:alpha-galactosylceramide