title: Antigen-specific IL-23/17 pathway activation by murine semi-mature DC-like cells.
abstract: We analyzed the phenotype and function of bone marrow-derived dendritic cells (DCs) induced in vitro without using any serum during the late stage of cultivation. These 'serum-free' DCs (SF-DCs) possessed the ability to induce T cell proliferation as well as antibody responses, indicating that they were functional DCs. Surprisingly, the SF-DCs akin to semi-mature DCs in terms of both phenotypic and functional characteristics. The SF-DCs did not produce IL-12 but produced large amounts of IL-23 following lipopolysaccharide stimulation. The antigen-specific production of IL-17 by CD4(+) T cells co-cultured with OVA-loaded SF-DCs was significantly higher than that with OVA-loaded conventional DCs. These results suggest that SF-DCs tend to produce IL-23 and can consequently induce the IL-17 producing CD4(+) T cells. The semi-mature DC-like cells reported here will be useful vehicles for DC immunization and might contribute to studies on the possible involvement of semi-mature DCs in Th17 cell differentiation.
authors: Department of Biological Science and Technology, Tokyo University of Science, 2641 Yamazaki, Noda-shi, Chiba, Japan.
authors: Shinya
authors: S
authors: Nagasaka
authors: Takumi
authors: T
authors: Iwasaki
authors: Tomoko
authors: T
authors: Okano
authors: Joe
authors: J
authors: Chiba
mesh_terms: D000818:Animals; D000906:Antibodies / Q000276:immunology; D000941:Antigens / Q000276:immunology*; D015415:Biomarkers; D001853:Bone Marrow / Q000276:immunology*; D015496:CD4-Positive T-Lymphocytes / Q000276:immunology; D003713:Dendritic Cells / Q000276:immunology*; D018664:Interleukin-12 / Q000096:biosynthesis; D020381:Interleukin-17 / Q000096:biosynthesis*; D053759:Interleukin-23 / Q000096:biosynthesis*; D051379:Mice; D008807:Mice, Inbred BALB C; D010047:Ovalbumin / Q000276:immunology; D006377:T-Lymphocytes, Helper-Inducer / Q000276:immunology
chemical_list: D000906:Antibodies; D000941:Antigens; D015415:Biomarkers; D020381:Interleukin-17; D053759:Interleukin-23; D018664:Interleukin-12; D010047:Ovalbumin