PMID- 37454634 OWN - NLM STAT- MEDLINE DCOM- 20230825 LR - 20230825 IS - 1878-1705 (Electronic) IS - 1567-5769 (Linking) VI - 122 DP - 2023 Sep TI - Taurodeoxycholate ameliorates DSS-induced colitis in mice. PG - 110628 LID - S1567-5769(23)00953-0 [pii] LID - 10.1016/j.intimp.2023.110628 [doi] AB - BACKGROUND: Inflammatory bowel disease (IBD) is typically managed using medications such as 5-aminosalicylic acid (5-ASA), glucocorticoids, anti-TNFalpha Ab, or anti-IL-12/23 Ab. However, some patients do not respond well to these treatments or frequently experience relapses. Therefore, alternative therapeutic options are needed. Since the activation of the inflammasome is crucial to the pathogenesis of IBD, inhibiting the inflammasome may be beneficial for patients. MATERIALS AND METHODS: We tested the efficacy of taurodeoxycholate (TDCA), which is a known G-protein coupled receptor 19 (GPCR19) agonist, in a mouse colitis model induced by dextran sodium sulfate (DSS). RESULTS: In the mouse colitis model, TDCA prevented loss of body weight, shortening of the colon, production of pro-inflammatory cytokines, infiltration of pro-inflammatory cells, and mucosal ulceration in the colon. In vitro, TDCA inhibited the activation of NF-kappaB in bone marrow-derived macrophages (BMDMs) by activating the cAMP-PKA axis. TDCA downregulated the expression of purinergic receptor P2X7 (P2X7R) and enhanced the colocalization of P2X7R with GPCR19, and inhibited the Ca(2+) mobilization of BMDMs when stimulated with ATP or BzATP, which plays a pivotal role in activating the NLRP3 inflammasome (N3I) via P2X7R. TDCA inhibited the oligomerization of NLRP3-ASC and downregulated the expression of NLRP3 and ASC, as well as suppressed the maturation of pro-caspase-1 and pro-IL-1beta. TDCA also increased the percentage of M2 macrophages while decreasing the number of M1 macrophages, Th1, Th2, and Th17 cells in the colon. CONCLUSION: TDCA ameliorated DSS-induced colitis in mice, possibly by inhibiting both the priming phase (via the GPCR19-cAMP-PKA-NF-kappaB axis) and the activation phase (via the GPCR19-P2X7R-NLRP3-Caspase 1-IL-1beta axis) of N3I signaling. CI - Copyright (c) 2023 Elsevier B.V. All rights reserved. FAU - Zou, Yunyun AU - Zou Y AD - Wide River Institute of Immunology, Seoul National University, Hongcheon, Republic of Korea; Department of Biomedical Sciences, Seoul National University College of Medicine, Seoul, Republic of Korea. FAU - Ghaderpour, Aziz AU - Ghaderpour A AD - Wide River Institute of Immunology, Seoul National University, Hongcheon, Republic of Korea; Department of Biomedical Sciences, Seoul National University College of Medicine, Seoul, Republic of Korea. FAU - Munkhbileg, Bolormaa AU - Munkhbileg B AD - Wide River Institute of Immunology, Seoul National University, Hongcheon, Republic of Korea; Department of Microbiology and Immunology, Seoul National University College of Medicine, Seoul, Republic of Korea. FAU - Seo, Sang-Uk AU - Seo SU AD - Department of Microbiology, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea. FAU - Seong, Seung-Yong AU - Seong SY AD - Wide River Institute of Immunology, Seoul National University, Hongcheon, Republic of Korea; Department of Biomedical Sciences, Seoul National University College of Medicine, Seoul, Republic of Korea; Department of Microbiology and Immunology, Seoul National University College of Medicine, Seoul, Republic of Korea; Shaperon Inc., Seoul, Republic of Korea. Electronic address: seongsy@snu.ac.kr. LA - eng PT - Journal Article DEP - 20230714 PL - Netherlands TA - Int Immunopharmacol JT - International immunopharmacology JID - 100965259 RN - 0 (Inflammasomes) RN - 0 (NLR Family, Pyrin Domain-Containing 3 Protein) RN - 0 (NF-kappa B) RN - 9042-14-2 (Dextran Sulfate) SB - IM MH - Mice MH - Animals MH - Inflammasomes/metabolism MH - NLR Family, Pyrin Domain-Containing 3 Protein/metabolism MH - NF-kappa B/metabolism MH - *Colitis/chemically induced/drug therapy/metabolism MH - *Inflammatory Bowel Diseases/metabolism MH - Dextran Sulfate MH - Mice, Inbred C57BL OTO - NOTNLM OT - GPCR19 OT - NLRP3 OT - P2X7R OT - TDCA OT - Ulcerative colitis COIS- Declaration of Competing Interest The patent titled "Composition Comprising GPCR19 Agonist as an Active Ingredient for Preventing or Treating Inflammatory Bowel Disease" with the following references: KR102204406B1, PCT/KR2020/001179, 17/284.305, 202080005732.3, 2021-547027, 20745833.2, 202147022375, was invented by Seong et al. and applied for by the Seoul National University R&DB Foundation. The exclusive license for the patent was transferred from SNU R&DB to Shaperon Inc., of which Dr. S.Y. Seong is a founder and the current CEO. The other authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper. EDAT- 2023/07/17 00:42 MHDA- 2023/08/25 06:42 CRDT- 2023/07/16 18:09 PHST- 2023/04/16 00:00 [received] PHST- 2023/07/04 00:00 [revised] PHST- 2023/07/06 00:00 [accepted] PHST- 2023/08/25 06:42 [medline] PHST- 2023/07/17 00:42 [pubmed] PHST- 2023/07/16 18:09 [entrez] AID - S1567-5769(23)00953-0 [pii] AID - 10.1016/j.intimp.2023.110628 [doi] PST - ppublish SO - Int Immunopharmacol. 2023 Sep;122:110628. doi: 10.1016/j.intimp.2023.110628. Epub 2023 Jul 14.