PMID- 28779023 OWN - NLM STAT- MEDLINE DCOM- 20171010 LR - 20201209 IS - 1550-6606 (Electronic) IS - 0022-1767 (Linking) VI - 199 IP - 6 DP - 2017 Sep 15 TI - Notch Balances Th17 and Induced Regulatory T Cell Functions in Dendritic Cells by Regulating Aldh1a2 Expression. PG - 1989-1997 LID - 10.4049/jimmunol.1700645 [doi] AB - Dendritic cells (DCs) are important for adaptive immune responses through the activation of T cells. The molecular interplay between DCs and T cells determines the magnitude of T cell responses or outcomes of functional differentiation of T cells. In this study, we demonstrated that DCs in mice that are Rbpj deficient in CD11c(+) cells (Rbpj(-/-) mice) promoted the differentiation of IL-17A-producing Th17 cells. Rbpj-deficient DCs expressed little Aldh1a2 protein that is required for generating retinoic acid. Those DCs exhibited a reduced ability for differentiating regulatory T cells induced by TGF-beta. Rbpj protein directly regulated Aldh1a2 transcription by binding to its promoter region. The overexpression of Aldh1a2 in Rbpj-deficient DCs negated their Th17-promoting ability. Transfer of naive CD4(+) T cells into Rag1-deficient Rbpj(-/-) mice enhanced colitis with increased Th17 and reduced induced regulatory T cells (iTreg) compared with control Rag1-deficient mice. The cotransfer of iTreg and naive CD4(+) T cells into Rag1-deficient Rbpj(-/-) mice improved colitis compared with transfer of naive CD4(+) T cell alone. Furthermore, cotransfer of DCs from Rbpj(-/-) mice that overexpressed Aldh1a2 or Notch-stimulated DCs together with naive CD4(+) T cells into Rbpj(-/-)Rag1-deficient mice led to reduced colitis with increased iTreg numbers. Therefore, our studies identify Notch signaling in DCs as a crucial balancer of Th17/iTreg, which depends on the direct regulation of Aldh1a2 transcription in DCs. CI - Copyright (c) 2017 by The American Association of Immunologists, Inc. FAU - Zaman, Taskia Sultana AU - Zaman TS AD - Department of Immunology and Parasitology, Graduate School of Medicine, Tokushima University, Tokushima 770-8503, Japan. FAU - Arimochi, Hideki AU - Arimochi H AD - Department of Immunology and Parasitology, Graduate School of Medicine, Tokushima University, Tokushima 770-8503, Japan. FAU - Maruyama, Satoshi AU - Maruyama S AD - Department of Immunology and Parasitology, Graduate School of Medicine, Tokushima University, Tokushima 770-8503, Japan. FAU - Ishifune, Chieko AU - Ishifune C AD - Department of Immunology and Parasitology, Graduate School of Medicine, Tokushima University, Tokushima 770-8503, Japan. FAU - Tsukumo, Shin-Ichi AU - Tsukumo SI AD - Department of Immunology and Parasitology, Graduate School of Medicine, Tokushima University, Tokushima 770-8503, Japan. FAU - Kitamura, Akiko AU - Kitamura A AD - Department of Immunology and Parasitology, Graduate School of Medicine, Tokushima University, Tokushima 770-8503, Japan. FAU - Yasutomo, Koji AU - Yasutomo K AD - Department of Immunology and Parasitology, Graduate School of Medicine, Tokushima University, Tokushima 770-8503, Japan yasutomo@tokushima-u.ac.jp. LA - eng PT - Journal Article DEP - 20170804 PL - United States TA - J Immunol JT - Journal of immunology (Baltimore, Md. : 1950) JID - 2985117R RN - 0 (CD11c Antigen) RN - 0 (Immunoglobulin J Recombination Signal Sequence-Binding Protein) RN - 0 (Interleukin-17) RN - 0 (Rbpj protein, mouse) RN - 0 (Receptors, Notch) RN - 5688UTC01R (Tretinoin) RN - EC 1.2.1 (Aldehyde Dehydrogenase 1 Family) RN - EC 1.2.1.36 (ALDH1A2 protein, human) RN - EC 1.2.1.36 (Retinal Dehydrogenase) SB - IM MH - Aldehyde Dehydrogenase 1 Family MH - Animals MH - CD11c Antigen/metabolism MH - Cell Differentiation MH - Cells, Cultured MH - Colitis/*immunology MH - Dendritic Cells/*immunology MH - Gene Expression Regulation MH - Genes, RAG-1 MH - Humans MH - Immunoglobulin J Recombination Signal Sequence-Binding Protein/genetics MH - Interleukin-17/metabolism MH - Lymphocyte Activation MH - Mice MH - Mice, Inbred C57BL MH - Mice, Knockout MH - Receptors, Notch/metabolism MH - Retinal Dehydrogenase/genetics/*metabolism MH - T-Lymphocytes, Regulatory/*immunology/transplantation MH - Th17 Cells/*immunology MH - Tretinoin/metabolism EDAT- 2017/08/06 06:00 MHDA- 2017/10/11 06:00 CRDT- 2017/08/06 06:00 PHST- 2017/05/04 00:00 [received] PHST- 2017/07/06 00:00 [accepted] PHST- 2017/08/06 06:00 [pubmed] PHST- 2017/10/11 06:00 [medline] PHST- 2017/08/06 06:00 [entrez] AID - jimmunol.1700645 [pii] AID - 10.4049/jimmunol.1700645 [doi] PST - ppublish SO - J Immunol. 2017 Sep 15;199(6):1989-1997. doi: 10.4049/jimmunol.1700645. Epub 2017 Aug 4.