PMID- 33592327 OWN - NLM STAT- MEDLINE DCOM- 20210708 LR - 20211204 IS - 1873-2763 (Electronic) IS - 1873-2763 (Linking) VI - 146 DP - 2021 May TI - Magnesium supplementation enhances mTOR signalling to facilitate myogenic differentiation and improve aged muscle performance. PG - 115886 LID - S8756-3282(21)00048-X [pii] LID - 10.1016/j.bone.2021.115886 [doi] AB - Magnesium (Mg(2+)), as an essential mineral, supports and sustains the health and activity of the organs of the human body. Despite some clinical evidence on the association of Mg(2+) deficiency with muscle regeneration dysfunction and sarcopenia in older-aged individuals, there is no consensus on the action mode and molecular mechanism by which Mg(2+) influences aged muscle size and function. Here, we identified the appropriate Mg(2+) environment that promotes the myogenic differentiation and myotube hypertrophy in both C2C12 myoblast and primary aged muscle stem cell (MuSC). Through animal experiments, we demonstrated that Mg(2+) supplementation in aged mice significantly promotes muscle regeneration and conserves muscle mass and strength. Mechanistically, Mg(2+) stimulation activated the mammalian target of rapamycin (mTOR) signalling, inducing the myogenic differentiation and protein synthesis, which consequently offers protections against the age-related decline in muscle regenerative potential and muscle mass. These findings collectively provide a promising therapeutic strategy for MuSC dysfunction and sarcopenia through Mg(2+) supplementation in the elderly. CI - Copyright (c) 2021 Elsevier Inc. All rights reserved. FAU - Liu, Yuantong AU - Liu Y AD - Department of Spine Surgery, Shenzhen People's Hospital, The Second Clinical Medical College, Jinan University, Shenzhen 518020, China; The First Affiliated Hospital, Jinan University, Guangzhou 510630, China. FAU - Wang, Qinghe AU - Wang Q AD - Department of Spine Surgery, Shenzhen People's Hospital, The Second Clinical Medical College, Jinan University, Shenzhen 518020, China. FAU - Zhang, Zengfu AU - Zhang Z AD - School of Medicine, Cheeloo College of Medicine, Shandong University, Jinan 250012, China. FAU - Fu, Runhan AU - Fu R AD - School of Medicine, Cheeloo College of Medicine, Shandong University, Jinan 250012, China. FAU - Zhou, Tianjian AU - Zhou T AD - Shenzhen Key Laboratory of Tissue and Functional Reconstruction of Sports System, The First Affiliated Hospital of Southern University of Science and Technology, Shenzhen 518020, China. FAU - Long, Canling AU - Long C AD - Department of Spine Surgery, Shenzhen People's Hospital, The Second Clinical Medical College, Jinan University, Shenzhen 518020, China. FAU - He, Tongzhong AU - He T AD - Department of Spine Surgery, Shenzhen People's Hospital, The Second Clinical Medical College, Jinan University, Shenzhen 518020, China. FAU - Yang, Dazhi AU - Yang D AD - Department of Spine Surgery, Shenzhen People's Hospital, The Second Clinical Medical College, Jinan University, Shenzhen 518020, China. Electronic address: yangdazhi1111@163.com. FAU - Li, Zhizhong AU - Li Z AD - The First Affiliated Hospital, Jinan University, Guangzhou 510630, China. Electronic address: lizhizhongjd@163.com. FAU - Peng, Songlin AU - Peng S AD - Department of Spine Surgery, Shenzhen People's Hospital, The Second Clinical Medical College, Jinan University, Shenzhen 518020, China; Shenzhen Key Laboratory of Tissue and Functional Reconstruction of Sports System, The First Affiliated Hospital of Southern University of Science and Technology, Shenzhen 518020, China. Electronic address: songlin824@gmail.com. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20210214 PL - United States TA - Bone JT - Bone JID - 8504048 RN - EC 2.7.11.1 (TOR Serine-Threonine Kinases) RN - I38ZP9992A (Magnesium) SB - IM MH - Animals MH - Cell Differentiation MH - Dietary Supplements MH - *Magnesium/pharmacology MH - Mice MH - *Muscle Development MH - Muscle, Skeletal MH - TOR Serine-Threonine Kinases OTO - NOTNLM OT - Aging OT - Magnesium OT - Muscle regeneration OT - Muscle stem cell OT - Myogenic differentiation OT - Sarcopenia EDAT- 2021/02/17 06:00 MHDA- 2021/07/09 06:00 CRDT- 2021/02/16 20:09 PHST- 2020/11/03 00:00 [received] PHST- 2021/01/08 00:00 [revised] PHST- 2021/02/09 00:00 [accepted] PHST- 2021/02/17 06:00 [pubmed] PHST- 2021/07/09 06:00 [medline] PHST- 2021/02/16 20:09 [entrez] AID - S8756-3282(21)00048-X [pii] AID - 10.1016/j.bone.2021.115886 [doi] PST - ppublish SO - Bone. 2021 May;146:115886. doi: 10.1016/j.bone.2021.115886. Epub 2021 Feb 14.