PMID- 28130275 OWN - NLM STAT- MEDLINE DCOM- 20171004 LR - 20211204 IS - 1757-4684 (Electronic) IS - 1757-4676 (Print) IS - 1757-4676 (Linking) VI - 9 IP - 3 DP - 2017 Mar TI - Modulation of mTOR signaling as a strategy for the treatment of Pompe disease. PG - 353-370 LID - 10.15252/emmm.201606547 [doi] AB - Mechanistic target of rapamycin (mTOR) coordinates biosynthetic and catabolic processes in response to multiple extracellular and intracellular signals including growth factors and nutrients. This serine/threonine kinase has long been known as a critical regulator of muscle mass. The recent finding that the decision regarding its activation/inactivation takes place at the lysosome undeniably brings mTOR into the field of lysosomal storage diseases. In this study, we have examined the involvement of the mTOR pathway in the pathophysiology of a severe muscle wasting condition, Pompe disease, caused by excessive accumulation of lysosomal glycogen. Here, we report the dysregulation of mTOR signaling in the diseased muscle cells, and we focus on potential sites for therapeutic intervention. Reactivation of mTOR in the whole muscle of Pompe mice by TSC knockdown resulted in the reversal of atrophy and a striking removal of autophagic buildup. Of particular interest, we found that the aberrant mTOR signaling can be reversed by arginine. This finding can be translated into the clinic and may become a paradigm for targeted therapy in lysosomal, metabolic, and neuromuscular diseases. CI - (c) 2017 The Authors. Published under the terms of the CC BY 4.0 license. FAU - Lim, Jeong-A AU - Lim JA AD - Laboratory of Muscle Stem Cells and Gene Regulation, National Institute of Arthritis and Musculoskeletal and Skin Diseases, National Institutes of Health, Bethesda, MD, USA. AD - Cell Biology and Physiology Center, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD, USA. FAU - Li, Lishu AU - Li L AUID- ORCID: 0000-0003-2133-6702 AD - Laboratory of Muscle Stem Cells and Gene Regulation, National Institute of Arthritis and Musculoskeletal and Skin Diseases, National Institutes of Health, Bethesda, MD, USA lishuli1@hotmail.com puertolr@mail.nih.gov rabenn@mail.nih.gov. FAU - Shirihai, Orian S AU - Shirihai OS AUID- ORCID: 0000-0001-8466-3431 AD - Department of Medicine, Obesity and Nutrition Section, Evans Biomedical Research Center, Boston University School of Medicine, Boston, MA, USA. FAU - Trudeau, Kyle M AU - Trudeau KM AD - Department of Medicine, Obesity and Nutrition Section, Evans Biomedical Research Center, Boston University School of Medicine, Boston, MA, USA. FAU - Puertollano, Rosa AU - Puertollano R AUID- ORCID: 0000-0002-1106-5489 AD - Cell Biology and Physiology Center, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD, USA lishuli1@hotmail.com puertolr@mail.nih.gov rabenn@mail.nih.gov. FAU - Raben, Nina AU - Raben N AUID- ORCID: 0000-0001-9519-3535 AD - Laboratory of Muscle Stem Cells and Gene Regulation, National Institute of Arthritis and Musculoskeletal and Skin Diseases, National Institutes of Health, Bethesda, MD, USA lishuli1@hotmail.com puertolr@mail.nih.gov rabenn@mail.nih.gov. LA - eng GR - R01 DK099618/DK/NIDDK NIH HHS/United States PT - Journal Article PL - England TA - EMBO Mol Med JT - EMBO molecular medicine JID - 101487380 RN - 94ZLA3W45F (Arginine) RN - EC 2.7.1.1 (mTOR protein, mouse) RN - EC 2.7.11.1 (TOR Serine-Threonine Kinases) SB - IM MH - Animals MH - Arginine/administration & dosage MH - Disease Models, Animal MH - Glycogen Storage Disease Type II/*physiopathology/therapy MH - Mice MH - Mice, Knockout MH - Muscles/pathology MH - *Signal Transduction MH - TOR Serine-Threonine Kinases/*metabolism MH - Treatment Outcome PMC - PMC5331267 OTO - NOTNLM OT - mTOR OT - Pompe disease OT - autophagy OT - lysosomal storage disorders OT - myopathy EDAT- 2017/01/29 06:00 MHDA- 2017/10/05 06:00 PMCR- 2017/03/01 CRDT- 2017/01/29 06:00 PHST- 2017/01/29 06:00 [pubmed] PHST- 2017/10/05 06:00 [medline] PHST- 2017/01/29 06:00 [entrez] PHST- 2017/03/01 00:00 [pmc-release] AID - emmm.201606547 [pii] AID - EMMM201606547 [pii] AID - 10.15252/emmm.201606547 [doi] PST - ppublish SO - EMBO Mol Med. 2017 Mar;9(3):353-370. doi: 10.15252/emmm.201606547.