title: A single intraduodenal administration of human adenovirus 40 vaccine effectively prevents anaphylactic shock.
abstract: Vaccine administration into the intestine is known to induce mucosal tolerance most efficiently. Therefore, developing a delivery system that targets the intestinal mucosa is expected to improve the efficiency of immunosuppression. Human enteric adenovirus serotype 40 (Ad40)-based vectors have the advantage of targeting intestinal mucosa, making them prime candidates as mucosal vaccine carriers for immunosuppression. Here, after both oral and intraduodenal administrations, the vector distribution of replication-defective recombinant Ad40 vectors (rAd40) was significantly higher than that of a conventional Ad vector based on human adenovirus 5 (Ad5) in ilea containing Peyer's patches. Single intraduodenal administration of rAd40 induced antigen-specific mucosal immunoreaction mediated by intestinal mucosal and systemic immunity. In ovalbumin-induced allergy mouse models, this approach inhibited antigen-specific delayed-type hypersensitivity reactions, diarrhea occurrence, and systemic anaphylaxis. Thus, a single intraduodenal administration of rAd40 provides a potent method of inducing allergen-specific mucosal tolerance and a new allergen-specific immunotherapy for overcoming problems with current therapies against life-threatening allergic reactions, including anaphylaxis.
authors.affiliation: Department of Surgery.
authors.forename: Satoshi
authors.initials: S
authors.lastname: Yamasaki
authors.forename: Yoshiaki
authors.initials: Y
authors.lastname: Miura
authors.forename: Julia
authors.initials: J
authors.lastname: Davydova
authors.forename: Selwyn M
authors.initials: SM
authors.lastname: Vickers
authors.forename: Masato
authors.initials: M
authors.lastname: Yamamoto
mesh_terms: D062705:Adenovirus Vaccines / Q000008:administration & dosage* / Q000009:adverse effects / Q000276:immunology*; D000260:Adenoviruses, Human / Q000276:immunology*; D000485:Allergens / Q000276:immunology; D000707:Anaphylaxis / Q000517:prevention & control*; D000818:Animals; D004386:Duodenum / Q000276:immunology*; D005260:Female; D007108:Immune Tolerance; D007413:Intestinal Mucosa / Q000276:immunology*; D051379:Mice; D008807:Mice, Inbred BALB C; D008810:Mice, Inbred C57BL; D010047:Ovalbumin / Q000276:immunology
chemical_list: D062705:Adenovirus Vaccines; D000485:Allergens; D010047:Ovalbumin