PMID- 36423379 OWN - NLM STAT- MEDLINE DCOM- 20221206 LR - 20221221 IS - 1090-2104 (Electronic) IS - 0006-291X (Linking) VI - 637 DP - 2022 Dec 31 TI - Mesenchymal stem cells-derived exosomal miR-24-3p ameliorates non-alcohol fatty liver disease by targeting Keap-1. PG - 331-340 LID - S0006-291X(22)01546-7 [pii] LID - 10.1016/j.bbrc.2022.11.012 [doi] AB - The prevalence of nonalcoholic fatty liver disease (NAFLD) is increasing worldwide with ill-defined etiology and pathogenesis, and no approved effective therapy is presently available. Exosome-dependent intercellular communication has been identified as a potential signaling involved in tissue repair. Unfortunately, the exact influence and underlying mechanism of mesenchymal stem cells (MSCs)-derived exosome (Exo) in modulating fatty liver have not been well determined. Here in our study, in vitro results initially showed that human umbilical cord-derived mesenchymal stem cells (hUC-MSCs)-derived Exo treatment significantly suppressed lipid accumulation, reactive oxygen species (ROS) generation and inflammatory response in palmitate (PA)-stimulated mouse hepatocytes. Consistently, MSCs-derived Exo administration strongly ameliorated metabolic disorders, hepatic dysfunction and steatosis in high fat diet (HFD)-induced mouse model with NAFLD. Furthermore, Exo derived from MSCs significantly alleviated hepatic lipid metabolism disturbance, inflammation and oxidative stress induced by HFD. Exo treatment resulted in a stronger increase in miR-24-3p expression in hepatocytes. Reducing miR-24-3p in MSCs markedly abrogated the protective effects of Exo in hepatocytes under PA stimulation. Mechanistically, miR-24-3p directly targeted Kelch-like ECH-associated protein 1 (Keap-1), and suppressed its expression. In addition, the effects of MSCs-derived exosomal miR-24-3p to restrain lipid accumulation, ROS generation and inflammation in vitro were largely Keap-1 dependent via Keap-1 depression. Collectively, our study demonstrated that MSCs-derived exosomal miR-24-3p had hepaprotective effects through targeting Keap-1 signaling, providing a potential therapeutic value for NAFLD treatment. CI - Copyright (c) 2022. Published by Elsevier Inc. FAU - Du, Xiaolin AU - Du X AD - Department of Medical Center, The Second Affiliated Hospital of Shandong University of Traditional Chinese Medicine, Jinan, 250001, China. Electronic address: dxl0252@126.com. FAU - Li, Haiyan AU - Li H AD - Department of Scientific Research Center, The Second Affiliated Hospital of Shandong University of Traditional Chinese Medicine, Jinan, 250001, China. FAU - Han, Xingjun AU - Han X AD - Prevention and Treatment Center, The Second Affiliated Hospital of Shandong University of Traditional Chinese Medicine, Jinan, 250001, China. FAU - Ma, Wenlu AU - Ma W AD - Department of Medical Center, The Second Affiliated Hospital of Shandong University of Traditional Chinese Medicine, Jinan, 250001, China. Electronic address: 826036122@qq.com. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20221111 PL - United States TA - Biochem Biophys Res Commun JT - Biochemical and biophysical research communications JID - 0372516 RN - 0 (Kelch-Like ECH-Associated Protein 1) RN - 0 (MicroRNAs) RN - 0 (MIRN24 microRNA, human) RN - 0 (Palmitates) RN - 0 (Reactive Oxygen Species) RN - 0 (KEAP1 protein, human) SB - IM MH - Animals MH - Humans MH - Mice MH - Inflammation MH - Kelch-Like ECH-Associated Protein 1/genetics MH - *Mesenchymal Stem Cells MH - *MicroRNAs/genetics MH - *Non-alcoholic Fatty Liver Disease/genetics/therapy MH - Palmitates MH - Reactive Oxygen Species OTO - NOTNLM OT - Exosome OT - Keap-1 OT - MSCs OT - NAFLD OT - miR-24-3p COIS- Declaration of competing interest The authors see no conflict of interest. EDAT- 2022/11/25 06:00 MHDA- 2022/12/06 06:00 CRDT- 2022/11/24 18:14 PHST- 2022/10/24 00:00 [received] PHST- 2022/11/03 00:00 [revised] PHST- 2022/11/06 00:00 [accepted] PHST- 2022/11/25 06:00 [pubmed] PHST- 2022/12/06 06:00 [medline] PHST- 2022/11/24 18:14 [entrez] AID - S0006-291X(22)01546-7 [pii] AID - 10.1016/j.bbrc.2022.11.012 [doi] PST - ppublish SO - Biochem Biophys Res Commun. 2022 Dec 31;637:331-340. doi: 10.1016/j.bbrc.2022.11.012. Epub 2022 Nov 11.