PMID- 35306755 OWN - NLM STAT- MEDLINE DCOM- 20220610 LR - 20220716 IS - 2190-6009 (Electronic) IS - 2190-5991 (Print) IS - 2190-5991 (Linking) VI - 13 IP - 3 DP - 2022 Jun TI - Skeletal muscle mitoribosomal defects are linked to low bone mass caused by bone marrow inflammation in male mice. PG - 1785-1799 LID - 10.1002/jcsm.12975 [doi] AB - BACKGROUND: Mitochondrial oxidative phosphorylation (OxPhos) is a critical regulator of skeletal muscle mass and function. Although muscle atrophy due to mitochondrial dysfunction is closely associated with bone loss, the biological characteristics of the relationship between muscle and bone remain obscure. We showed that muscle atrophy caused by skeletal muscle-specific CR6-interacting factor 1 knockout (MKO) modulates the bone marrow (BM) inflammatory response, leading to low bone mass. METHODS: MKO mice with lower muscle OxPhos were fed a normal chow or high-fat diet and then evaluated for muscle mass and function, and bone mineral density. Immunophenotyping of BM immune cells was also performed. BM transcriptomic analysis was used to identify key factors regulating bone mass in MKO mice. To determine the effects of BM-derived CXCL12 (C-X-C motif chemokine ligand 12) on regulation of bone homeostasis, a variety of BM niche-resident cells were treated with recombinant CXCL12. Vastus lateralis muscle and BM immune cell samples from 14 patients with hip fracture were investigated to examine the association between muscle function and BM inflammation. RESULTS: MKO mice exhibited significant reductions in both muscle mass and expression of OxPhos subunits but increased transcription of mitochondrial stress response-related genes in the extensor digitorum longus (P < 0.01). MKO mice showed a decline in grip strength and a higher drop rate in the wire hanging test (P < 0.01). Micro-computed tomography and von Kossa staining revealed that MKO mice developed a low mass phenotype in cortical and trabecular bone (P < 0.01). Transcriptomic analysis of the BM revealed that mitochondrial stress responses in skeletal muscles induce an inflammatory response and adipogenesis in the BM and that the CXCL12-CXCR4 (C-X-C chemokine receptor 4) axis is important for T-cell homing to the BM. Antagonism of CXCR4 attenuated BM inflammation and increased bone mass in MKO mice. In humans, patients with low body mass index (BMI = 17.2 +/- 0.42 kg/m(2) ) harboured a larger population of proinflammatory and cytotoxic senescent T-cells in the BMI (P < 0.05) and showed reduced expression of OxPhos subunits in the vastus lateralis, compared with controls with a normal BMI (23.7 +/- 0.88 kg/m(2) ) (P < 0.01). CONCLUSIONS: Defects in muscle mitochondrial OxPhos promote BM inflammation in mice, leading to decreased bone mass. Muscle mitochondrial dysfunction is linked to BM inflammatory cytokine secretion via the CXCL12-CXCR4 signalling axis, which is critical for inducing low bone mass. CI - (c) 2022 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 - Tian, Jingwen AU - Tian J AD - Department of Medical Science, Chungnam National University, Daejeon, Korea. AD - Laboratory of Endocrinology and Immune System, Chungnam National University School of Medicine, Daejeon, Korea. FAU - Chung, Hyo Kyun AU - Chung HK AD - Research Center for Endocrine and Metabolic Diseases, Chungnam National University School of Medicine, Daejeon, Korea. FAU - Moon, Ji Sun AU - Moon JS AD - Laboratory of Endocrinology and Immune System, Chungnam National University School of Medicine, Daejeon, Korea. AD - Research Center for Endocrine and Metabolic Diseases, Chungnam National University School of Medicine, Daejeon, Korea. FAU - Nga, Ha Thi AU - Nga HT AD - Department of Medical Science, Chungnam National University, Daejeon, Korea. AD - Laboratory of Endocrinology and Immune System, Chungnam National University School of Medicine, Daejeon, Korea. FAU - Lee, Ho Yeop AU - Lee HY AD - Department of Medical Science, Chungnam National University, Daejeon, Korea. AD - Laboratory of Endocrinology and Immune System, Chungnam National University School of Medicine, Daejeon, Korea. FAU - Kim, Jung Tae AU - Kim JT AD - Department of Medical Science, Chungnam National University, Daejeon, Korea. AD - Research Center for Endocrine and Metabolic Diseases, Chungnam National University School of Medicine, Daejeon, Korea. FAU - Chang, Joon Young AU - Chang JY AD - Department of Medical Science, Chungnam National University, Daejeon, Korea. AD - Research Center for Endocrine and Metabolic Diseases, Chungnam National University School of Medicine, Daejeon, Korea. FAU - Kang, Seul Gi AU - Kang SG AD - Department of Medical Science, Chungnam National University, Daejeon, Korea. AD - Research Center for Endocrine and Metabolic Diseases, Chungnam National University School of Medicine, Daejeon, Korea. FAU - Ryu, Dongryeol AU - Ryu D AD - Department of Molecular Cell Biology, Sungkyunkwan University School of Medicine, Suwon, Korea. AD - Samsung Biomedical Research Institute, Samsung Medical Center, Seoul, Korea. FAU - Che, Xiangguo AU - Che X AD - Department of Biochemistry and Cell Biology, Cell and Matrix Research Institute, BK21 Plus KNU Biomedical Convergence Program, School of Medicine, Kyungpook National University, Daegu, Korea. AD - Department of Internal Medicine, Rheumatology and Immunology, The Affiliated Hospital of Yanbian University, Yanji, China. FAU - Choi, Je-Yong AU - Choi JY AD - Department of Biochemistry and Cell Biology, Cell and Matrix Research Institute, BK21 Plus KNU Biomedical Convergence Program, School of Medicine, Kyungpook National University, Daegu, Korea. FAU - Tsukasaki, Masayuki AU - Tsukasaki M AD - Department of Immunology, Graduate School of Medicine and Faculty of Medicine, The University of Tokyo, Tokyo, Japan. FAU - Sasako, Takayoshi AU - Sasako T AD - Department of Diabetes and Metabolic Diseases, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan. FAU - Lee, Sang-Hee AU - Lee SH AD - Bio-Electron Microscopy Research Center (104-Dong), Korea Basic Science Institute, Cheongju, Korea. FAU - Shong, Minho AU - Shong M AD - Department of Medical Science, Chungnam National University, Daejeon, Korea. AD - Research Center for Endocrine and Metabolic Diseases, Chungnam National University School of Medicine, Daejeon, Korea. FAU - Yi, Hyon-Seung AU - Yi HS AUID- ORCID: 0000-0002-3767-1954 AD - Department of Medical Science, Chungnam National University, Daejeon, Korea. AD - Laboratory of Endocrinology and Immune System, Chungnam National University School of Medicine, Daejeon, Korea. AD - Research Center for Endocrine and Metabolic Diseases, Chungnam National University School of Medicine, Daejeon, Korea. LA - eng GR - Korean Endocrine Society of Hyangseol Young Investigator Award/ GR - Chungnam National University Hospital Research Fund/ GR - NRF-2017R1E1A1A01075126/National Research Foundation of Korea/ GR - NRF-2021R1A5A8029876/National Research Foundation of Korea/ GR - NRF-2019M3E5D1A02068575/National Research Foundation of Korea/ PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20220320 PL - Germany TA - J Cachexia Sarcopenia Muscle JT - Journal of cachexia, sarcopenia and muscle JID - 101552883 SB - IM MH - Animals MH - *Bone Marrow/pathology MH - Humans MH - Inflammation/metabolism MH - Male MH - Mice MH - *Muscle, Skeletal/pathology MH - Muscular Atrophy/pathology MH - X-Ray Microtomography PMC - PMC9178379 OTO - NOTNLM OT - Bone loss OT - Bone marrow OT - Inflammation OT - Mitochondria COIS- The authors declare no competing interests. EDAT- 2022/03/21 06:00 MHDA- 2022/06/11 06:00 PMCR- 2022/06/01 CRDT- 2022/03/20 20:36 PHST- 2022/02/01 00:00 [revised] PHST- 2021/07/14 00:00 [received] PHST- 2022/02/15 00:00 [accepted] PHST- 2022/03/21 06:00 [pubmed] PHST- 2022/06/11 06:00 [medline] PHST- 2022/03/20 20:36 [entrez] PHST- 2022/06/01 00:00 [pmc-release] AID - JCSM12975 [pii] AID - 10.1002/jcsm.12975 [doi] PST - ppublish SO - J Cachexia Sarcopenia Muscle. 2022 Jun;13(3):1785-1799. doi: 10.1002/jcsm.12975. Epub 2022 Mar 20.