PMID- 22231518 OWN - NLM STAT- MEDLINE DCOM- 20120308 LR - 20211021 IS - 1529-2916 (Electronic) IS - 1529-2908 (Print) IS - 1529-2908 (Linking) VI - 13 IP - 2 DP - 2012 Jan 8 TI - Signaling via the kinase p38alpha programs dendritic cells to drive TH17 differentiation and autoimmune inflammation. PG - 152-61 LID - 10.1038/ni.2207 [doi] AB - Dendritic cells (DCs) bridge innate and adaptive immunity, but how DC-derived signals regulate T cell lineage choices remains unclear. We report here that the mitogen-activated protein kinase p38alpha programmed DCs to drive the differentiation of the T(H)17 subset of helper T cells. Deletion of p38alpha in DCs protected mice from T(H)17 cell-mediated autoimmune neuroinflammation, but deletion of p38alpha in macrophages or T cells did not. We also found that p38alpha orchestrated the expression of cytokines and costimulatory molecules in DCs and further 'imprinted' signaling via the receptor for interleukin 23 (IL-23R) in responding T cells to promote T(H)17 differentiation. Moreover, p38alpha was required for tissue-infiltrating DCs to sustain T(H)17 responses. This activity of p38alpha was conserved in mouse and human DCs and was dynamically regulated by pattern recognition and fungal infection. Our results identify p38alpha signaling as a central pathway for the integration of instructive signals in DCs for T(H)17 differentiation and inflammation. FAU - Huang, Gonghua AU - Huang G AD - Department of Immunology, St. Jude Children's Research Hospital, Memphis, Tennessee, USA. FAU - Wang, Yanyan AU - Wang Y FAU - Vogel, Peter AU - Vogel P FAU - Kanneganti, Thirumala-Devi AU - Kanneganti TD FAU - Otsu, Kinya AU - Otsu K FAU - Chi, Hongbo AU - Chi H LA - eng GR - K01 AR053573-05/AR/NIAMS NIH HHS/United States GR - R01 NS064599-04/NS/NINDS NIH HHS/United States GR - K01 AR053573/AR/NIAMS NIH HHS/United States GR - R01 NS064599/NS/NINDS NIH HHS/United States GR - K01 AR053573-03S1/AR/NIAMS NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, Non-U.S. Gov't DEP - 20120108 PL - United States TA - Nat Immunol JT - Nature immunology JID - 100941354 RN - 0 (Cytokines) RN - 0 (Receptors, Interleukin) RN - 0 (Receptors, Pattern Recognition) RN - 0 (interleukin-23 receptor, mouse) RN - EC 2.7.11.24 (Mitogen-Activated Protein Kinase 14) SB - IM MH - Animals MH - Cytokines/immunology MH - Dendritic Cells/enzymology/*immunology MH - Encephalomyelitis, Autoimmune, Experimental/enzymology/*immunology MH - Gene Deletion MH - Humans MH - Lymphocyte Activation/*immunology MH - Macrophages/enzymology/immunology MH - Mice MH - Mitogen-Activated Protein Kinase 14/genetics/*metabolism MH - Mycoses/immunology/metabolism MH - Receptors, Interleukin/immunology MH - Receptors, Pattern Recognition/immunology/metabolism MH - T-Lymphocytes/enzymology/immunology MH - Th17 Cells/enzymology/*immunology PMC - PMC3262925 MID - NIHMS342899 EDAT- 2012/01/11 06:00 MHDA- 2012/03/09 06:00 PMCR- 2012/08/01 CRDT- 2012/01/11 06:00 PHST- 2011/08/30 00:00 [received] PHST- 2011/12/07 00:00 [accepted] PHST- 2012/01/11 06:00 [entrez] PHST- 2012/01/11 06:00 [pubmed] PHST- 2012/03/09 06:00 [medline] PHST- 2012/08/01 00:00 [pmc-release] AID - ni.2207 [pii] AID - 10.1038/ni.2207 [doi] PST - epublish SO - Nat Immunol. 2012 Jan 8;13(2):152-61. doi: 10.1038/ni.2207.