PMID- 34348977 OWN - NLM STAT- MEDLINE DCOM- 20210831 LR - 20220902 IS - 1550-6606 (Electronic) IS - 0022-1767 (Print) IS - 0022-1767 (Linking) VI - 207 IP - 5 DP - 2021 Sep 1 TI - Activation of Transcription Factor 4 in Dendritic Cells Controls Th1/Th17 Responses and Autoimmune Neuroinflammation. PG - 1428-1436 LID - 10.4049/jimmunol.2100010 [doi] AB - Dendritic cells (DCs) are professional APCs that play a crucial role in initiating robust immune responses against invading pathogens while inducing regulatory responses to the body's tissues and commensal microorganisms. A breakdown of DC-mediated immunological tolerance leads to chronic inflammation and autoimmune disorders. However, cell-intrinsic molecular regulators that are critical for programming DCs to a regulatory state rather than to an inflammatory state are not known. In this study, we show that the activation of the TCF4 transcription factor in DCs is critical for controlling the magnitude of inflammatory responses and limiting neuroinflammation. DC-specific deletion of TCF4 in mice increased Th1/Th17 responses and exacerbated experimental autoimmune encephalomyelitis pathology. Mechanistically, loss of TCF4 in DCs led to heightened activation of p38 MAPK and increased levels of proinflammatory cytokines IL-6, IL-23, IL-1beta, TNF-alpha, and IL-12p40. Consistent with these findings, pharmacological blocking of p38 MAPK activation delayed experimental autoimmune encephalomyelitis onset and diminished CNS pathology in TCF4(DeltaDC) mice. Thus, manipulation of the TCF4 pathway in DCs could provide novel opportunities for regulating chronic inflammation and represents a potential therapeutic approach to control autoimmune neuroinflammation. CI - Copyright (c) 2021 by The American Association of Immunologists, Inc. FAU - Manoharan, Indumathi AU - Manoharan I AD - Department of Biochemistry and Molecular Biology, Medical College of Georgia, Augusta University, Augusta, GA. AD - Georgia Cancer Center, Medical College of Georgia, Augusta University, Augusta, GA. FAU - Swafford, Daniel AU - Swafford D AD - Georgia Cancer Center, Medical College of Georgia, Augusta University, Augusta, GA. FAU - Shanmugam, Arulkumaran AU - Shanmugam A AD - Georgia Cancer Center, Medical College of Georgia, Augusta University, Augusta, GA. FAU - Patel, Nikhil AU - Patel N AUID- ORCID: 0000-0001-9335-0082 AD - Department of Pathology, Medical College of Georgia, Augusta University, Augusta, GA; and. FAU - Prasad, Puttur D AU - Prasad PD AUID- ORCID: 0000-0002-8455-0186 AD - Department of Biochemistry and Molecular Biology, Medical College of Georgia, Augusta University, Augusta, GA. FAU - Thangaraju, Muthusamy AU - Thangaraju M AD - Department of Biochemistry and Molecular Biology, Medical College of Georgia, Augusta University, Augusta, GA. FAU - Manicassamy, Santhakumar AU - Manicassamy S AUID- ORCID: 0000-0002-2203-3917 AD - Department of Biochemistry and Molecular Biology, Medical College of Georgia, Augusta University, Augusta, GA; smanicassamy@augusta.edu. AD - Georgia Cancer Center, Medical College of Georgia, Augusta University, Augusta, GA. AD - Department of Medicine, Medical College of Georgia, Augusta University, Augusta, GA. LA - eng GR - R01 DK097271/DK/NIDDK NIH HHS/United States GR - R01 DK123360/DK/NIDDK NIH HHS/United States GR - R21 AI156103/AI/NIAID NIH HHS/United States PT - Comment PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, Non-U.S. Gov't DEP - 20210804 PL - United States TA - J Immunol JT - Journal of immunology (Baltimore, Md. : 1950) JID - 2985117R RN - 0 (Transcription Factor 4) SB - IM CON - J Immunol. 2021 Sep 1;207(5):1223-1224. PMID: 34426516 MH - Animals MH - Dendritic Cells MH - *Encephalomyelitis, Autoimmune, Experimental MH - Mice MH - Mice, Inbred C57BL MH - *Th1 Cells MH - Th17 Cells MH - Transcription Factor 4 PMC - PMC8415100 MID - NIHMS1721021 COIS- Conflict of Interest: Authors disclose no conflict of interest. EDAT- 2021/08/06 06:00 MHDA- 2021/09/01 06:00 PMCR- 2022/09/01 CRDT- 2021/08/05 05:43 PHST- 2021/01/07 00:00 [received] PHST- 2021/06/28 00:00 [accepted] PHST- 2021/08/06 06:00 [pubmed] PHST- 2021/09/01 06:00 [medline] PHST- 2021/08/05 05:43 [entrez] PHST- 2022/09/01 00:00 [pmc-release] AID - jimmunol.2100010 [pii] AID - 10.4049/jimmunol.2100010 [doi] PST - ppublish SO - J Immunol. 2021 Sep 1;207(5):1428-1436. doi: 10.4049/jimmunol.2100010. Epub 2021 Aug 4.