title: Cutting edge: Expression of functional CD137 receptor by dendritic cells.
abstract: Interaction between dendritic cells (DCs) and T cells is a prerequisite for the initiation of a T cell response. The molecular nature of this interaction remains to be fully characterized. We report in this work that freshly isolated mouse splenic DCs and bone marrow-derived DCs express CD137 on the cell surface and in soluble form. Triggering CD137 increased the secretion of IL-6 and IL-12 from DCs. More importantly, infusion of an agonistic mAb to CD137 into naive mice enhanced the ability of DCs to stimulate T cell proliferation in response to both alloantigens and a nominal Ag in vitro. This enhancement of DC function is not mediated through activation of T cells, because the effect was also observed in RAG-1 knockout mice that lack T cells. Our findings implicate CD137 as an important receptor involved in the modulation of DC function.
authors.affiliation: Department of Immunology, Mayo Clinic, Rochester, MN 55905, USA.
authors.forename: Ryan A
authors.initials: RA
authors.lastname: Wilcox
authors.forename: Andrei I
authors.initials: AI
authors.lastname: Chapoval
authors.forename: Kevin S
authors.initials: KS
authors.lastname: Gorski
authors.forename: Mizuto
authors.initials: M
authors.lastname: Otsuji
authors.forename: Tahiro
authors.initials: T
authors.lastname: Shin
authors.forename: Dallas B
authors.initials: DB
authors.lastname: Flies
authors.forename: Koji
authors.initials: K
authors.lastname: Tamada
authors.forename: Robert S
authors.initials: RS
authors.lastname: Mittler
authors.forename: Haruo
authors.initials: H
authors.lastname: Tsuchiya
authors.forename: Drew M
authors.initials: DM
authors.lastname: Pardoll
authors.forename: Lieping
authors.initials: L
authors.lastname: Chen
mesh_terms: D000818:Animals; D000911:Antibodies, Monoclonal / Q000494:pharmacology; D015703:Antigens, CD; D002478:Cells, Cultured; D016207:Cytokines / Q000096:biosynthesis; D003713:Dendritic Cells / Q000276:immunology*; D005260:Female; D006412:Hematopoietic Stem Cells / Q000276:immunology; D008213:Lymphocyte Activation; D051379:Mice; D008807:Mice, Inbred BALB C; D008810:Mice, Inbred C57BL; D017475:Receptors, Nerve Growth Factor / Q000276:immunology / Q000378:metabolism* / Q000502:physiology*; D018124:Receptors, Tumor Necrosis Factor / Q000276:immunology / Q000378:metabolism* / Q000502:physiology*; D013154:Spleen / Q000276:immunology; D013601:T-Lymphocytes / Q000276:immunology; D053261:Tumor Necrosis Factor Receptor Superfamily, Member 9
chemical_list: D000911:Antibodies, Monoclonal; D015703:Antigens, CD; D016207:Cytokines; D017475:Receptors, Nerve Growth Factor; D018124:Receptors, Tumor Necrosis Factor; C505715:Tnfrsf9 protein, mouse; D053261:Tumor Necrosis Factor Receptor Superfamily, Member 9