title: IL-10 and IL-27 producing dendritic cells capable of enhancing IL-10 production of T cells are induced in oral tolerance.
abstract: Oral tolerance is a key feature of intestinal immunity, generating systemic tolerance to ingested antigens (Ag). Dendritic cells (DC) have been revealed as important immune regulators, however, the precise role of DC in oral tolerance induction remains unclear. We investigated the characteristics of DC in spleen, mesenteric lymph node (MLN), and Peyer's patch (PP) after oral Ag administration in a TCR-transgenic mouse model. DC from PP and MLN of tolerized mice induced IL-10 production but not Foxp3 expression in cocultured T cells. IL-10 production was markedly increased after 5-7-day Ag administration especially in PP DC. On the other hand, IL-27 production was increased after 2-5-day Ag administration. CD11b(+) DC, which increased after ingestion of Ag, prominently expressed IL-10 and IL-27 compared with CD11b(-) DC. These results suggest that IL-10 and IL-27 producing DC are increased by interaction with antigen specific T cells in PP, and these DC act as an inducer of IL-10 producing T cells in oral tolerance.
authors.affiliation: Research Center for Food Safety, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo, Japan.
authors.forename: Aya
authors.initials: A
authors.lastname: Shiokawa
authors.forename: Kosuke
authors.initials: K
authors.lastname: Tanabe
authors.forename: Noriko M
authors.initials: NM
authors.lastname: Tsuji
authors.forename: Ryuichiro
authors.initials: R
authors.lastname: Sato
authors.forename: Satoshi
authors.initials: S
authors.lastname: Hachimura
mesh_terms: D000284:Administration, Oral; D000818:Animals; D004268:DNA-Binding Proteins / Q000235:genetics / Q000276:immunology / Q000378:metabolism*; D003713:Dendritic Cells / Q000276:immunology* / Q000378:metabolism; D051858:Forkhead Transcription Factors / Q000276:immunology / Q000378:metabolism; D007108:Immune Tolerance / Q000276:immunology; D016753:Interleukin-10 / Q000276:immunology / Q000378:metabolism*; D007378:Interleukins / Q000276:immunology / Q000378:metabolism*; D008198:Lymph Nodes / Q000276:immunology / Q000378:metabolism; D051379:Mice; D008807:Mice, Inbred BALB C; D018345:Mice, Knockout; D008822:Mice, Transgenic; D009055:Mouth / Q000276:immunology*; D010047:Ovalbumin / Q000276:immunology; D010581:Peyer's Patches / Q000276:immunology / Q000378:metabolism; D011948:Receptors, Antigen, T-Cell / Q000276:immunology / Q000378:metabolism; D013154:Spleen / Q000276:immunology / Q000378:metabolism; D013601:T-Lymphocytes / Q000276:immunology* / Q000378:metabolism
chemical_list: D004268:DNA-Binding Proteins; D051858:Forkhead Transcription Factors; C498833:Foxp3 protein, mouse; C486767:Il27 protein, mouse; D007378:Interleukins; C499308:Rag2 protein, mouse; D011948:Receptors, Antigen, T-Cell; D016753:Interleukin-10; D010047:Ovalbumin