PMID- 36708027 OWN - NLM STAT- MEDLINE DCOM- 20230407 LR - 20230407 IS - 2190-6009 (Electronic) IS - 2190-5991 (Print) IS - 2190-5991 (Linking) VI - 14 IP - 2 DP - 2023 Apr TI - Mesenchymal stromal cells ameliorate diabetes-induced muscle atrophy through exosomes by enhancing AMPK/ULK1-mediated autophagy. PG - 915-929 LID - 10.1002/jcsm.13177 [doi] AB - BACKGROUND: Diabetes and obesity are associated with muscle atrophy that reduces life quality and lacks effective treatment. Mesenchymal stromal cell (MSC)-based therapy can ameliorate high fat-diet (HFD) and immobilization (IM)-induced muscle atrophy in mice. However, the effect of MSCs on muscle atrophy in type 2 diabetes mellitus (T2DM) and the potential mechanism is unclear. Here, we evaluated the efficacy and explored molecular mechanisms of human umbilical cord MSCs (hucMSCs) and hucMSC-derived exosomes (MSC-EXO) on diabetes- and obesity-induced muscle atrophy. METHODS: Diabetic db/db mice, mice fed with high-fat diet (HFD), mice with hindlimb immobilization (IM), and C2C12 myotubes were used to explore the effect of hucMSCs or MSC-EXO in alleviating muscle atrophy. Grip strength test and treadmill running were used to measure skeletal muscle strength and performance. Body composition, muscle weight, and muscle fibre cross-sectional area (CSA) was used to evaluate muscle mass. RNA-seq analysis of tibialis anterior (TA) muscle and Western blot analysis of muscle atrophy signalling, including MuRF1 and Atrogin 1, were performed to investigate the underlying mechanisms. RESULTS: hucMSCs increased grip strength (P = 0.0256 in db/db mice, P = 0.012 in HFD mice, P = 0.0097 in IM mice), running endurance (P = 0.0154 in HFD mice, P = 0.0006 in IM mice), and muscle mass (P = 0.0004 in db/db mice, P = 0.0076 in HFD mice, P = 0.0144 in IM mice) in all models tested, with elevated CSA of muscle fibres (P < 0.0001 in db/db mice and HFD mice, P = 0.0088 in IM mice) and reduced Atrogin1 (P = 0.0459 in db/db mice, P = 0.0088 in HFD mice, P = 0.0016 in IM mice) and MuRF1 expression (P = 0.0004 in db/db mice, P = 0.0077 in HFD mice, P = 0.0451 in IM mice). MSC-EXO replicated all these hucMSC-mediated changes (P = 0.0103 for grip strength, P = 0.013 for muscle mass, P < 0.0001 for CSA of muscle fibres, P = 0.0171 for Atrogin1 expression, and P = 0.006 for MuRF1 expression). RNA-seq revealed that hucMSCs activated the AMPK/ULK1 signalling and enhanced autophagy. Knockdown of AMPK or inhibition of autophagy with 3-methyladenine (3-MA) diminished the beneficial anti-atrophy effects of hucMSCs or MSC-EXO. CONCLUSIONS: Our results suggest that human umbilical cord mesenchymal stromal cells mitigate diabetes- and obesity-induced muscle atrophy via enhancing AMPK/ULK1-mediated autophagy through exosomes, with implications of applying hucMSCs or hucMSC-derived exosomes to treat muscle atrophy. CI - (c) 2023 The Authors. Journal of Cachexia, Sarcopenia and Muscle published by John Wiley & Sons Ltd on behalf of Society on Sarcopenia, Cachexia and Wasting Disorders. FAU - Song, Jia AU - Song J AD - Department of Endocrinology, Qilu Hospital of Shandong University, Jinan, Shandong, China. FAU - Liu, Jidong AU - Liu J AD - Department of Endocrinology, Qilu Hospital of Shandong University, Jinan, Shandong, China. FAU - Cui, Chen AU - Cui C AD - Department of Endocrinology, Qilu Hospital of Shandong University, Jinan, Shandong, China. FAU - Hu, Huiqing AU - Hu H AD - Department of Endocrinology, Qilu Hospital of Shandong University, Jinan, Shandong, China. FAU - Zang, Nan AU - Zang N AD - Department of Endocrinology, Qilu Hospital of Shandong University, Jinan, Shandong, China. FAU - Yang, Mengmeng AU - Yang M AD - Department of Endocrinology, Qilu Hospital of Shandong University, Jinan, Shandong, China. FAU - Yang, Jingwen AU - Yang J AD - Department of Endocrinology, Qilu Hospital of Shandong University, Jinan, Shandong, China. FAU - Zou, Ying AU - Zou Y AD - Department of Endocrinology, Qilu Hospital of Shandong University, Jinan, Shandong, China. FAU - Li, Jinquan AU - Li J AD - Department of Endocrinology, Qilu Hospital of Shandong University, Jinan, Shandong, China. FAU - Wang, Lingshu AU - Wang L AD - Department of Endocrinology, Qilu Hospital of Shandong University, Jinan, Shandong, China. FAU - He, Qin AU - He Q AD - Department of Endocrinology, Qilu Hospital of Shandong University, Jinan, Shandong, China. FAU - Guo, Xinghong AU - Guo X AD - Department of Endocrinology, Qilu Hospital of Shandong University, Jinan, Shandong, China. FAU - Zhao, Ruxing AU - Zhao R AD - Department of Endocrinology, Qilu Hospital of Shandong University, Jinan, Shandong, China. FAU - Yan, Fei AU - Yan F AD - Department of Endocrinology, Qilu Hospital of Shandong University, Jinan, Shandong, China. FAU - Liu, Fuqiang AU - Liu F AD - Department of Endocrinology, Qilu Hospital of Shandong University, Jinan, Shandong, China. FAU - Hou, Xinguo AU - Hou X AD - Department of Endocrinology, Qilu Hospital of Shandong University, Jinan, Shandong, China. AD - Institute of Endocrine and Metabolic Diseases of Shandong University, Jinan, Shandong, China. AD - Key Laboratory of Endocrine and Metabolic Diseases, Shandong Province Medicine & Health, Jinan, Shandong, China. AD - Jinan Clinical Research Center for Endocrine and Metabolic Disease, Jinan, Shandong, China. FAU - Sun, Zheng AU - Sun Z AD - Department of Endocrinology, Qilu Hospital of Shandong University, Jinan, Shandong, China. FAU - Chen, Li AU - Chen L AD - Department of Endocrinology, Qilu Hospital of Shandong University, Jinan, Shandong, China. AD - Institute of Endocrine and Metabolic Diseases of Shandong University, Jinan, Shandong, China. AD - Key Laboratory of Endocrine and Metabolic Diseases, Shandong Province Medicine & Health, Jinan, Shandong, China. AD - Jinan Clinical Research Center for Endocrine and Metabolic Disease, Jinan, Shandong, China. LA - eng GR - 82070800/National Natural Science Foundation of China/ GR - ts201712089/Taishan Scholar Foundation of Shandong Province/ PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20230127 PL - Germany TA - J Cachexia Sarcopenia Muscle JT - Journal of cachexia, sarcopenia and muscle JID - 101552883 RN - EC 2.7.11.31 (AMP-Activated Protein Kinases) RN - EC 2.7.11.1 (Autophagy-Related Protein-1 Homolog) RN - 0 (Intracellular Signaling Peptides and Proteins) RN - EC 2.7.11.1 (ULK1 protein, human) SB - IM MH - Animals MH - Humans MH - Mice MH - AMP-Activated Protein Kinases/metabolism MH - Autophagy MH - Autophagy-Related Protein-1 Homolog/metabolism MH - *Diabetes Mellitus, Type 2/complications/therapy MH - *Exosomes/metabolism MH - Intracellular Signaling Peptides and Proteins/metabolism MH - *Mesenchymal Stem Cells/metabolism MH - *Muscular Atrophy/etiology/therapy/metabolism MH - Obesity PMC - PMC10067482 OTO - NOTNLM OT - AMPK/ULK1 OT - Autophagy OT - Exosome OT - Muscle atrophy OT - hucMSCs COIS- All authors declare that they have no competing interests. EDAT- 2023/01/29 06:00 MHDA- 2023/04/04 06:42 PMCR- 2023/01/27 CRDT- 2023/01/28 01:43 PHST- 2022/11/21 00:00 [revised] PHST- 2022/06/21 00:00 [received] PHST- 2023/01/02 00:00 [accepted] PHST- 2023/04/04 06:42 [medline] PHST- 2023/01/29 06:00 [pubmed] PHST- 2023/01/28 01:43 [entrez] PHST- 2023/01/27 00:00 [pmc-release] AID - JCSM13177 [pii] AID - 10.1002/jcsm.13177 [doi] PST - ppublish SO - J Cachexia Sarcopenia Muscle. 2023 Apr;14(2):915-929. doi: 10.1002/jcsm.13177. Epub 2023 Jan 27.