PMID- 37918086 OWN - NLM STAT- MEDLINE DCOM- 20231120 LR - 20231227 IS - 1878-1705 (Electronic) IS - 1567-5769 (Linking) VI - 125 IP - Pt A DP - 2023 Dec TI - Human umbilical cord mesenchymal stem cells inhibit liver fibrosis via the microRNA-148a-5p/SLIT3 axis. PG - 111134 LID - S1567-5769(23)01460-1 [pii] LID - 10.1016/j.intimp.2023.111134 [doi] AB - BACKGROUND: Human umbilical cord-derived mesenchymal stem cells (hUC-MSCs) have garnered considerable attention as prospective modalities of treatment for liver fibrosis (LF). The inhibition of hepatic stellate cell (HSC) activation underlies the anti-fibrotic effects of hUC-MSCs. However, the precise mechanism by which hUC-MSCs impede HSC activation remains unclarified. We aimed to elucidate the intrinsic mechanisms underlying the therapeutic effects of hUC-MSCs in LF patients. METHODS: Mice with liver cirrhosis induced by carbon tetrachloride (CCl(4)) were used as experimental models and administered hUC-MSCs via tail-vein injection. The alterations in inflammation and fibrosis were evaluated through histopathological examinations. RNA sequencing (RNA-seq) and bioinformatics analysis were then conducted to investigate the therapeutic mechanism of hUC-MSCs. Finally, an in-vitro experiment involving the co-cultivation of hUC-MSCs or hUC-MSC-derived exosomes (MSC-Exos) with LX2 cells was performed to validate the potential mechanism underlying the hepatoprotective effects of hUC-MSCs in LF patients. RESULTS: hUC-MSC therapy significantly improved liver function and alleviated LF in CCl(4)-induced mice. High-throughput RNA-Seq analysis identified 1142 differentially expressed genes that were potentially involved in mediating the therapeutic effects of hUC-MSCs. These genes play an important role in regulating the extracellular matrix. miRNA expression data (GSE151098) indicated that the miR-148a-5p level was downregulated in LF samples, but restored following hUC-MSC treatment. miR-148a-5p was delivered to LX2 cells by hUC-MSCs via the exosome pathway, and the upregulated expression of miR-148a-5p significantly suppressed the expression of the activated phenotype of LX2 cells. SLIT3 was identified within the pool of potential target genes regulated by miR-148a-5p. Furthermore, hUC-MSC administration upregulated the expression of miR-148a-5p, which played a crucial role in suppressing the expression of SLIT3, thereby palliating fibrosis. CONCLUSIONS: hUC-MSCs inhibit the activation of HSCs through the miR-148a-5p/SLIT3 pathway and are thus capable of alleviating LF. CI - Copyright (c) 2023 The Author(s). Published by Elsevier B.V. All rights reserved. FAU - Yuan, Mengqin AU - Yuan M AD - Department of Infectious Diseases, Renmin Hospital of Wuhan University, Wuhan 430060, China. FAU - Yao, Lichao AU - Yao L AD - Department of Infectious Diseases, Renmin Hospital of Wuhan University, Wuhan 430060, China. FAU - Chen, Ping AU - Chen P AD - Department of Infectious Diseases, Renmin Hospital of Wuhan University, Wuhan 430060, China. FAU - Wang, Zheng AU - Wang Z AD - Department of Infectious Diseases, Renmin Hospital of Wuhan University, Wuhan 430060, China. FAU - Liu, Pingji AU - Liu P AD - Department of Infectious Diseases, Renmin Hospital of Wuhan University, Wuhan 430060, China. FAU - Xiong, Zhiyu AU - Xiong Z AD - Department of Infectious Diseases, Renmin Hospital of Wuhan University, Wuhan 430060, China. FAU - Hu, Xue AU - Hu X AD - Department of Infectious Diseases, Renmin Hospital of Wuhan University, Wuhan 430060, China. FAU - Li, Lanjuan AU - Li L AD - Department of Infectious Diseases, Renmin Hospital of Wuhan University, Wuhan 430060, China; State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, National Clinical Research Centre for Infectious Diseases, Collaborative Innovation Centre for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310053, China. Electronic address: ljli@zju.edu.cn. FAU - Jiang, Yingan AU - Jiang Y AD - Department of Infectious Diseases, Renmin Hospital of Wuhan University, Wuhan 430060, China. Electronic address: jiangya_cn@aliyun.com. LA - eng PT - Journal Article DEP - 20231031 PL - Netherlands TA - Int Immunopharmacol JT - International immunopharmacology JID - 100965259 RN - 0 (MicroRNAs) RN - 0 (SLIT3 protein, human) RN - 0 (Membrane Proteins) SB - IM MH - Humans MH - Mice MH - Animals MH - Prospective Studies MH - Liver Cirrhosis/chemically induced/genetics/therapy MH - *MicroRNAs/genetics/metabolism MH - Fibrosis MH - *Mesenchymal Stem Cells/metabolism MH - Umbilical Cord MH - Membrane Proteins/metabolism OTO - NOTNLM OT - Hepatic stellate cell OT - Human umbilical cord mesenchymal stem cells OT - Liver fibrosis OT - SLIT3 OT - microRNA-148a-5p COIS- Declaration of Competing Interest The 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- 2023/11/03 00:42 MHDA- 2023/11/20 06:55 CRDT- 2023/11/02 19:02 PHST- 2023/07/20 00:00 [received] PHST- 2023/10/08 00:00 [revised] PHST- 2023/10/23 00:00 [accepted] PHST- 2023/11/20 06:55 [medline] PHST- 2023/11/03 00:42 [pubmed] PHST- 2023/11/02 19:02 [entrez] AID - S1567-5769(23)01460-1 [pii] AID - 10.1016/j.intimp.2023.111134 [doi] PST - ppublish SO - Int Immunopharmacol. 2023 Dec;125(Pt A):111134. doi: 10.1016/j.intimp.2023.111134. Epub 2023 Oct 31.