PMID- 34953165 OWN - NLM STAT- MEDLINE DCOM- 20220506 LR - 20220506 IS - 1460-2377 (Electronic) IS - 0953-8178 (Linking) VI - 34 IP - 4 DP - 2022 Mar 25 TI - Selective suppression of IL-10 transcription by calcineurin in dendritic cells through inactivation of CREB. PG - 197-206 LID - 10.1093/intimm/dxab112 [doi] AB - Myeloid cells play a pivotal role in immune responses against bacterial and fungal infection. Among innate immune receptors, C-type lectin receptors (CLRs) can induce a wide spectrum of cytokines through immunoreceptor tyrosine-based activation motifs (ITAMs)-mediated signaling pathways. Dendritic cells (DCs) produce IL-10 through CLR stimulation; however, the regulatory mechanism of IL-10 expression has not been elucidated. In the current study, we report that calcium (Ca2+) signaling-deficient DCs produced more IL-10 than wild-type DCs. Mechanistically, Ca2+-dependent phosphatase calcineurin directly inactivates cAMP response element-binding protein (CREB), a transcription factor of Il10 in DCs, through dephosphorylating CREB at serine 133. In calcineurin-deficient DCs, CREB was highly phosphorylated and increased its binding to the Il10 promoter. Elimination of mitogen-activated protein kinase (MAPK) signaling that phosphorylates CREB, deficiency of CREB, as well as deletion of a CREB-binding site in the Il10 promoter could diminish IL-10 production in DCs. Our findings identified a novel substrate of calcineurin as well as a mechanism through which Ca2+ signaling regulates IL-10 expression downstream of CLRs. As IL-10 is a crucial immunosuppressive cytokine, this mechanism may counteract the over-activated IL-10-producing signals induced by CARD9 and MAPK pathways, preventing the ineffectiveness of the immune system during bacterial and fungal infection. CI - (c) The Author(s) 2021. Published by Oxford University Press on behalf of The Japanese Society for Immunology. All rights reserved. For permissions, please e-mail: journals.permissions@oup.com. FAU - Lu, Xiuyuan AU - Lu X AUID- ORCID: 0000-0002-0784-2871 AD - Laboratory of Molecular Immunology, Immunology Frontier Research Center, Osaka University, Suita, Japan. FAU - Oh-Hora, Masatsugu AU - Oh-Hora M AD - Laboratory of Molecular Immunology, Immunology Frontier Research Center, Osaka University, Suita, Japan. AD - Department of Biochemistry, Juntendo University School of Medicine, Tokyo, Japan. FAU - Takeda, Kiyoshi AU - Takeda K AD - Laboratory of Immune Regulation, Department of Microbiology and Immunology, Graduate School of Medicine, Osaka University, Suita, Japan. AD - Department of Mucosal Immunology, Immunology Frontier Research Center, Osaka University, Suita, Japan. AD - Center for Infectious Disease Education and Research (CiDER), Osaka University, Suita, Japan. FAU - Yamasaki, Sho AU - Yamasaki S AD - Laboratory of Molecular Immunology, Immunology Frontier Research Center, Osaka University, Suita, Japan. AD - Center for Infectious Disease Education and Research (CiDER), Osaka University, Suita, Japan. AD - Department of Molecular Immunology, Research Institute for Microbial Diseases, Osaka University, Suita, Japan. AD - Division of Molecular Design, Research Center for Systems Immunology, Medical Institute of Bioregulation, Kyushu University, Fukuoka, Japan. AD - Division of Molecular Immunology, Medical Mycology Research Center, Chiba University, Chiba, Japan. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - England TA - Int Immunol JT - International immunology JID - 8916182 RN - 0 (Cyclic AMP Response Element-Binding Protein) RN - 0 (Cytokines) RN - 0 (Lectins, C-Type) RN - 130068-27-8 (Interleukin-10) RN - EC 3.1.3.16 (Calcineurin) RN - SY7Q814VUP (Calcium) SB - IM MH - Calcineurin/metabolism MH - Calcium/metabolism MH - *Cyclic AMP Response Element-Binding Protein/metabolism MH - Cytokines/metabolism MH - Dendritic Cells MH - *Interleukin-10 MH - Lectins, C-Type MH - Phosphorylation OTO - NOTNLM OT - C-type lectin receptors (CLRs) OT - Ca2+ signaling OT - immune regulation OT - myeloid cells OT - phosphatase EDAT- 2021/12/26 06:00 MHDA- 2022/05/07 06:00 CRDT- 2021/12/25 17:02 PHST- 2021/11/26 00:00 [received] PHST- 2021/12/24 00:00 [accepted] PHST- 2021/12/26 06:00 [pubmed] PHST- 2022/05/07 06:00 [medline] PHST- 2021/12/25 17:02 [entrez] AID - 6483060 [pii] AID - 10.1093/intimm/dxab112 [doi] PST - ppublish SO - Int Immunol. 2022 Mar 25;34(4):197-206. doi: 10.1093/intimm/dxab112.