PMID- 36931619 OWN - NLM STAT- MEDLINE DCOM- 20230602 LR - 20230614 IS - 1873-2399 (Electronic) IS - 0301-472X (Linking) VI - 122 DP - 2023 Jun TI - Human umbilical cord mesenchymal stem cells ameliorate acute graft-versus-host disease by elevating phytosphingosine. PG - 19-29 LID - S0301-472X(23)00070-X [pii] LID - 10.1016/j.exphem.2023.03.002 [doi] AB - Acute graft-versus-host disease (aGVHD) is a prominent barrier to allogeneic hematopoietic stem cell transplantation (allo-HSCT) and even leads to death after HSCT. Human umbilical cord mesenchymal stem cells (HUCMSCs) are effective in aGVHD treatment and have mild side effects, but the underlying mechanisms remain unclear. Phytosphingosine (PHS) is known to prevent the loss of moisture from the skin; regulate epidermal cell growth, differentiation, and apoptosis; and exert bactericidal and anti-inflammatory effects. In this study, our results revealed the efficacy of HUCMSCs in alleviating aGVHD in a murine model, with striking changes in metabolism and significantly elevated PHS levels due to sphingolipid metabolism. In vitro, PHS reduced CD4(+) T-cell proliferation, enhanced apoptosis, and reduced T helper 1 (Th1) cell differentiation. Transcriptional analysis of donor CD4(+) T cells treated with PHS revealed significant decreases in transcripts regulating proinflammatory pathways, such as nuclear factor (NF)-kappaB. In vivo, the administration of PHS significantly ameliorated aGVHD development. Collectively, these beneficial effects indicate proof of concept that sphingolipid metabolites could be a safe and effective means to prevent aGVHD in the clinic. CI - Copyright (c) 2023. Published by Elsevier Inc. FAU - Hong, Tao AU - Hong T AD - Medical Center of Hematology, Xinqiao Hospital, State Key Laboratory of Trauma, Burns and Combined Injury, Army Medical University, Chongqing, China. FAU - Wang, Rui AU - Wang R AD - Medical Center of Hematology, Xinqiao Hospital, State Key Laboratory of Trauma, Burns and Combined Injury, Army Medical University, Chongqing, China; Jinfeng Laboratory, Chongqing, China. FAU - Yang, Guancui AU - Yang G AD - Medical Center of Hematology, Xinqiao Hospital, State Key Laboratory of Trauma, Burns and Combined Injury, Army Medical University, Chongqing, China; Department of Hematology, Affiliated Hospital of North Sichuan Medical College, Nanchong, China. FAU - Wang, Xiaoqi AU - Wang X AD - Medical Center of Hematology, Xinqiao Hospital, State Key Laboratory of Trauma, Burns and Combined Injury, Army Medical University, Chongqing, China. FAU - Zeng, Lingyu AU - Zeng L AD - Department of Hematology, The Affiliated Hospital of Xuzhou Medical University, Xuzhou, Jiangsu, China. FAU - Yang, Shijie AU - Yang S AD - Medical Center of Hematology, Xinqiao Hospital, State Key Laboratory of Trauma, Burns and Combined Injury, Army Medical University, Chongqing, China; Jinfeng Laboratory, Chongqing, China. FAU - Wei, Jin AU - Wei J AD - Department of Hematology, Affiliated Hospital of North Sichuan Medical College, Nanchong, China. FAU - Gao, Qiangguo AU - Gao Q AD - Department of Cell Biology, College of Basic Medicine, Army Medical University, Chongqing, China. Electronic address: qiangguogao@163.com. FAU - Zhang, Xi AU - Zhang X AD - Medical Center of Hematology, Xinqiao Hospital, State Key Laboratory of Trauma, Burns and Combined Injury, Army Medical University, Chongqing, China; Jinfeng Laboratory, Chongqing, China. Electronic address: zhangxxi@sina.com. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20230316 PL - Netherlands TA - Exp Hematol JT - Experimental hematology JID - 0402313 RN - GIN46U9Q2Q (phytosphingosine) RN - 0 (Sphingolipids) SB - IM MH - Humans MH - Animals MH - Mice MH - *Hematopoietic Stem Cell Transplantation/methods MH - *Graft vs Host Disease/prevention & control/etiology MH - *Mesenchymal Stem Cells MH - Sphingolipids MH - Umbilical Cord MH - Acute Disease EDAT- 2023/03/18 06:00 MHDA- 2023/06/02 06:42 CRDT- 2023/03/17 20:35 PHST- 2022/11/12 00:00 [received] PHST- 2023/02/28 00:00 [revised] PHST- 2023/03/08 00:00 [accepted] PHST- 2023/06/02 06:42 [medline] PHST- 2023/03/18 06:00 [pubmed] PHST- 2023/03/17 20:35 [entrez] AID - S0301-472X(23)00070-X [pii] AID - 10.1016/j.exphem.2023.03.002 [doi] PST - ppublish SO - Exp Hematol. 2023 Jun;122:19-29. doi: 10.1016/j.exphem.2023.03.002. Epub 2023 Mar 16.