PMID- 19299717 OWN - NLM STAT- MEDLINE DCOM- 20090414 LR - 20211203 IS - 1550-6606 (Electronic) IS - 0022-1767 (Print) IS - 0022-1767 (Linking) VI - 182 IP - 7 DP - 2009 Apr 1 TI - Signal transduction inhibition of APCs diminishes th17 and Th1 responses in experimental autoimmune encephalomyelitis. PG - 4192-9 LID - 10.4049/jimmunol.0803631 [doi] AB - IL-17- and IFN-gamma-secreting T cells play an important role in autoimmune responses in multiple sclerosis and the model system experimental autoimmune encephalomyelitis (EAE). Dendritic cells (DCs) in the periphery and microglia in the CNS are responsible for cytokine polarization and expansion of this T cell subset. Our results indicate that in vivo administration of a signal transduction inhibitor that targets DCs to mice with EAE led to a decrease in CNS infiltration of pathogenic Ag-specific T cells. Since this approach does not target T cells directly, we assessed the effects on the APCs that are involved in generating the T cell responses. Since in EAE and multiple sclerosis, both microglia and peripheral DCs are likely to contribute to disease, we utilized a bone marrow chimera system to distinguish between these two populations. These studies show that peripheral DCs are the primary target but that microglia are also modestly affected by CEP-701, as numbers and activation states of the cells in the CNS are decreased after therapy. Our results also showed a decrease in secretion of TNF-alpha, IL-6, and IL-23 by DCs as well as a decrease in expression of costimulatory molecules. We further determined that levels of phospho-Stat1, Stat3, Stat5, and NF-kappaB, which are signaling molecules that have been implicated in these pathways, were decreased. Thus, use of this class of signal transduction inhibitors may represent a novel method to treat autoimmunity by dampening the autoreactive polarizing condition driven by DCs. FAU - Skarica, Mario AU - Skarica M AD - Department of Oncology, Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins University School of Medicine, Baltimore MD 21231, USA. FAU - Wang, Tianhong AU - Wang T FAU - McCadden, Erin AU - McCadden E FAU - Kardian, David AU - Kardian D FAU - Calabresi, Peter A AU - Calabresi PA FAU - Small, Donald AU - Small D FAU - Whartenby, Katharine A AU - Whartenby KA LA - eng GR - R01 CA090668/CA/NCI NIH HHS/United States GR - R01-CA11989/CA/NCI NIH HHS/United States GR - R01-CA70970/CA/NCI NIH HHS/United States GR - P01 CA070970/CA/NCI NIH HHS/United States GR - R37 NS041435/NS/NINDS NIH HHS/United States GR - NS041435/NS/NINDS NIH HHS/United States GR - R01 CA090668-09/CA/NCI NIH HHS/United States GR - R01 NS041435/NS/NINDS NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural 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 (Carbazoles) RN - 0 (Cytokines) RN - 0 (Enzyme Inhibitors) RN - 0 (Furans) RN - 0 (Interleukin-17) RN - DO989GC5D1 (lestaurtinib) RN - EC 2.7.10.1 (Flt3 protein, mouse) RN - EC 2.7.10.1 (fms-Like Tyrosine Kinase 3) SB - IM MH - Animals MH - Antigen-Presenting Cells/*drug effects/immunology MH - Blotting, Western MH - Brain/immunology/metabolism/pathology MH - Carbazoles/*pharmacology MH - Chemotaxis, Leukocyte/drug effects MH - Cytokines/biosynthesis/immunology MH - Encephalomyelitis, Autoimmune, Experimental/*drug therapy/immunology/pathology MH - Enzyme Inhibitors/*pharmacology MH - Female MH - Furans MH - Interleukin-17/immunology/metabolism MH - Mice MH - Microglia/drug effects/immunology/metabolism MH - Signal Transduction/*drug effects/immunology MH - T-Lymphocyte Subsets/drug effects/immunology MH - Th1 Cells/*drug effects/immunology MH - fms-Like Tyrosine Kinase 3/deficiency/immunology PMC - PMC3727416 MID - NIHMS250789 COIS- Disclosures The authors have no financial conflicts of interest. EDAT- 2009/03/21 09:00 MHDA- 2009/04/15 09:00 PMCR- 2013/07/30 CRDT- 2009/03/21 09:00 PHST- 2009/03/21 09:00 [entrez] PHST- 2009/03/21 09:00 [pubmed] PHST- 2009/04/15 09:00 [medline] PHST- 2013/07/30 00:00 [pmc-release] AID - 182/7/4192 [pii] AID - 10.4049/jimmunol.0803631 [doi] PST - ppublish SO - J Immunol. 2009 Apr 1;182(7):4192-9. doi: 10.4049/jimmunol.0803631.