PMID- 17641016 OWN - NLM STAT- MEDLINE DCOM- 20070917 LR - 20190516 IS - 0022-1767 (Print) IS - 0022-1767 (Linking) VI - 179 IP - 3 DP - 2007 Aug 1 TI - Immunomodulatory dendritic cells inhibit Th1 responses and arthritis via different mechanisms. PG - 1506-15 AB - Dendritic cells (DCs) are professional APCs which have the unique ability to present both foreign and self-Ags to T cells and steer the outcome of immune responses. Because of these characteristics, DCs are attractive vehicles for the delivery of therapeutic vaccines. Fully matured DCs are relatively well-defined and even used in clinical trials in cancer. DCs also have the potential to influence the outcome of autoimmunity by modulating the underlying autoimmune response. To gain a better appreciation of the abilities and mechanisms by which immunomodulatory DCs influence the outcome of T cell responses, we studied several immunomodulatory DCs (TNF-, IL-10-, or dexamethasone-stimulated bone marrow-derived DCs) side by side for their ability to modulate T cell responses and autoimmune diseases. Our data show that these differentially modulated DCs display a different composition of molecules involved in T cell activation. Although, all DC subsets analyzed were able to inhibit the induction of collagen-induced arthritis, the modulation of the underlying immune response was different. Vaccination with TNF- or IL-10-modulated DCs altered the Th1/Th2 balance as evidenced by the induction of IL-5- and IL-10-secreting T cells and the concomitant reduction of the IgG2a-IgG1 ratio against the immunizing Ag. In contrast, DCs modulated with dexamethasone did not affect the ratio of IL-5-producing vs IFN-gamma-producing T cells and tended to affect the Ab response in a nonspecific manner. These data indicate that distinct mechanisms can be used by distinct DC subsets to change the outcome of autoimmunity. FAU - van Duivenvoorde, Leonie M AU - van Duivenvoorde LM AD - Department of Rheumatology, Leiden University Medical Center, Leiden, The Netherlands. FAU - Han, Wanda G H AU - Han WG FAU - Bakker, Aleida M AU - Bakker AM FAU - Louis-Plence, Pascale AU - Louis-Plence P FAU - Charbonnier, Louis-Marie AU - Charbonnier LM FAU - Apparailly, Florence AU - Apparailly F FAU - van der Voort, Ellen I H AU - van der Voort EI FAU - Jorgensen, Christian AU - Jorgensen C FAU - Huizinga, Tom W J AU - Huizinga TW FAU - Toes, Rene E M AU - Toes RE LA - eng PT - Comparative Study PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - J Immunol JT - Journal of immunology (Baltimore, Md. : 1950) JID - 2985117R RN - 0 (Collagen Type II) RN - 7S5I7G3JQL (Dexamethasone) SB - IM MH - Adoptive Transfer MH - Animals MH - Arthritis, Experimental/*immunology/*prevention & control MH - Cells, Cultured MH - Collagen Type II/administration & dosage/immunology MH - Dendritic Cells/drug effects/*immunology/*transplantation MH - Dexamethasone/pharmacology MH - *Immune Tolerance/drug effects MH - Male MH - Mice MH - Mice, Inbred BALB C MH - Mice, Inbred DBA MH - Mice, Transgenic MH - Th1 Cells/*immunology/metabolism EDAT- 2007/07/21 09:00 MHDA- 2007/09/18 09:00 CRDT- 2007/07/21 09:00 PHST- 2007/07/21 09:00 [pubmed] PHST- 2007/09/18 09:00 [medline] PHST- 2007/07/21 09:00 [entrez] AID - 179/3/1506 [pii] AID - 10.4049/jimmunol.179.3.1506 [doi] PST - ppublish SO - J Immunol. 2007 Aug 1;179(3):1506-15. doi: 10.4049/jimmunol.179.3.1506.