PMID- 35643343 OWN - NLM STAT- MEDLINE DCOM- 20220719 LR - 20220719 IS - 1879-3177 (Electronic) IS - 0887-2333 (Linking) VI - 83 DP - 2022 Sep TI - Dendritic cells activated by cimetidine induce Th1/Th17 polarization in vitro and in vivo. PG - 105395 LID - S0887-2333(22)00092-3 [pii] LID - 10.1016/j.tiv.2022.105395 [doi] AB - Dendritic cells (DCs) are powerful antigen presentation cells and the initiator of adaptive immune response. Cimetidine, a widely used drug for gastric ulcers treatment, has significant immunomodulatory ability. However, the effects of cimetidine on DC-mediated T cell activation need to be further explored. In this study, we constructed the in vitro and in vivo model of cimetidine exposure, and our data showed that cimetidine stimulated the maturity of immature DCs, and further enhanced its T cell priming capacity. In vivo, the number of rat splenic CD103(+) DC were not altered after cimetidine exposure, but the expression of surface markers CD54, CD11c, and MHC-II of which were up-regulated. Importantly, cimetidine interfered with DC-mediated T cell polarization, which was reflected in the up-regulation of Th1 and Th17 cells and the down-regulation of Th2 and Treg cells in vitro and in vivo. These results indicate that cimetidine can induce DC activation and promote DC mediated pro-inflammatory T cell response while weaken immunosuppressive T cell response. CI - Copyright (c) 2022 Elsevier Ltd. All rights reserved. FAU - Qu, Yaqian AU - Qu Y AD - Department of Occupational Health and Occupational Disease, College of Public Health, Zhengzhou University, Zhengzhou, Henan, PR China. FAU - Bao, Lei AU - Bao L AD - School of Public Health, Hebei Medical University, Shijiazhuang, Hebei, PR China. FAU - Zhao, Youliang AU - Zhao Y AD - Department of Occupational Health and Occupational Disease, College of Public Health, Zhengzhou University, Zhengzhou, Henan, PR China. FAU - Li, Yiping AU - Li Y AD - Department of Occupational Health and Occupational Disease, College of Public Health, Zhengzhou University, Zhengzhou, Henan, PR China. FAU - Ding, Mingcui AU - Ding M AD - Department of Occupational Health and Occupational Disease, College of Public Health, Zhengzhou University, Zhengzhou, Henan, PR China. FAU - Hao, Changfu AU - Hao C AD - Department of Occupational Health and Occupational Disease, College of Public Health, Zhengzhou University, Zhengzhou, Henan, PR China. Electronic address: haochangfu@126.com. FAU - Yao, Wu AU - Yao W AD - Department of Occupational Health and Occupational Disease, College of Public Health, Zhengzhou University, Zhengzhou, Henan, PR China. Electronic address: yaowu@zzu.edu.cn. LA - eng PT - Journal Article DEP - 20220526 PL - England TA - Toxicol In Vitro JT - Toxicology in vitro : an international journal published in association with BIBRA JID - 8712158 RN - 80061L1WGD (Cimetidine) SB - IM MH - Animals MH - Cell Differentiation MH - *Cimetidine/metabolism/pharmacology MH - Dendritic Cells/metabolism MH - Lymphocyte Activation MH - Rats MH - *Th17 Cells OTO - NOTNLM OT - Cimetidine OT - Dendritic cells OT - Immunomodulatory OT - T cell polarization EDAT- 2022/06/02 06:00 MHDA- 2022/07/20 06:00 CRDT- 2022/06/01 09:24 PHST- 2022/01/15 00:00 [received] PHST- 2022/04/27 00:00 [revised] PHST- 2022/05/19 00:00 [accepted] PHST- 2022/06/02 06:00 [pubmed] PHST- 2022/07/20 06:00 [medline] PHST- 2022/06/01 09:24 [entrez] AID - S0887-2333(22)00092-3 [pii] AID - 10.1016/j.tiv.2022.105395 [doi] PST - ppublish SO - Toxicol In Vitro. 2022 Sep;83:105395. doi: 10.1016/j.tiv.2022.105395. Epub 2022 May 26.