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Ryu M, Kim M, Jung HY, Kim CH, Jo C. Effect of p38 inhibitor on the proliferation of chicken muscle stem cells and differentiation into muscle and fat. Anim Biosci 2023; 36:295-306. [PMID: 36108703 PMCID: PMC9834727 DOI: 10.5713/ab.22.0171] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2022] [Accepted: 07/04/2022] [Indexed: 12/24/2022] Open
Abstract
OBJECTIVE Inhibiting the p38 mitogen-activated protein kinase (MAPK) signaling pathway delays differentiation and increases proliferation of muscle stem cells in most species. Here, we aimed to investigate the effect of p38 inhibitor (p38i) treatment on the proliferation and differentiation of chicken muscle stem cells. METHODS Chicken muscle stem cells were collected from the muscle tissues of Hy-line Brown chicken embryos at embryonic day 18, then isolated by the preplating method. Cells were cultured for 4 days in growth medium supplemented with dimethyl sulfoxide or 1, 10, 20 μM of p38i, then subcultured for up to 4 passages. Differentiation was induced for 3 days with differentiation medium. Each treatment was replicated 3 times. RESULTS The proliferation and mRNA expression of paired box 7 gene and myogenic factor 5 gene, as well as the mRNA expression of myogenic differentiation marker gene myogenin were significantly higher in p38i-treated cultures than in control (p<0.05), but immunofluorescence staining and mRNA expression of myosin heavy chain (MHC) were not significantly different between the two groups. Oil red O staining of accumulated lipid droplets in differentiated cell cultures revealed a higher lipid density in p38i-treated cultures than in control; however, the expression of the adipogenic marker gene peroxisome proliferator activated receptor gamma was not significantly different between the two groups. CONCLUSION p38 inhibition in chicken muscle stem cells improves cell proliferation, but the effects on myogenic differentiation and lipid accumulation require additional analysis. Further studies are needed on the chicken p38-MAPK pathway to understand the muscle and fat development mechanism.
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Affiliation(s)
- Minkyung Ryu
- Department of Agricultural Biotechnology, Center for Food and Bioconvergence, and Research Institute of Agriculture and Life Science, Seoul National University, Seoul 08826,
Korea
| | - Minsu Kim
- Department of Agricultural Biotechnology, Center for Food and Bioconvergence, and Research Institute of Agriculture and Life Science, Seoul National University, Seoul 08826,
Korea
| | - Hyun Young Jung
- Department of Agricultural Biotechnology, Center for Food and Bioconvergence, and Research Institute of Agriculture and Life Science, Seoul National University, Seoul 08826,
Korea
| | - Cho Hyun Kim
- Department of Agricultural Biotechnology, Center for Food and Bioconvergence, and Research Institute of Agriculture and Life Science, Seoul National University, Seoul 08826,
Korea
| | - Cheorun Jo
- Department of Agricultural Biotechnology, Center for Food and Bioconvergence, and Research Institute of Agriculture and Life Science, Seoul National University, Seoul 08826,
Korea,Institute of Green Bio Science and Technology, Seoul National University, Pyeongchang 25354,
Korea,Corresponding Author: Cheorun Jo, Tel: +82-2-880-4804, Fax: +82-2-873-2271, E-mail:
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2
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Tran D, Myers S, McGowan C, Henstridge D, Eri R, Sonda S, Caruso V. 1-Deoxysphingolipids, Early Predictors of Type 2 Diabetes, Compromise the Functionality of Skeletal Myoblasts. Front Endocrinol (Lausanne) 2021; 12:772925. [PMID: 35002962 PMCID: PMC8739520 DOI: 10.3389/fendo.2021.772925] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/09/2021] [Accepted: 12/03/2021] [Indexed: 01/18/2023] Open
Abstract
Metabolic dysfunction, dysregulated differentiation, and atrophy of skeletal muscle occur as part of a cluster of abnormalities associated with the development of Type 2 diabetes mellitus (T2DM). Recent interest has turned to the attention of the role of 1-deoxysphingolipids (1-DSL), atypical class of sphingolipids which are found significantly elevated in patients diagnosed with T2DM but also in the asymptomatic population who later develop T2DM. In vitro studies demonstrated that 1-DSL have cytotoxic properties and compromise the secretion of insulin from pancreatic beta cells. However, the role of 1-DSL on the functionality of skeletal muscle cells in the pathophysiology of T2DM still remains unclear. This study aimed to investigate whether 1-DSL are cytotoxic and disrupt the cellular processes of skeletal muscle precursors (myoblasts) and differentiated cells (myotubes) by performing a battery of in vitro assays including cell viability adenosine triphosphate assay, migration assay, myoblast fusion assay, glucose uptake assay, and immunocytochemistry. Our results demonstrated that 1-DSL significantly reduced the viability of myoblasts in a concentration and time-dependent manner, and induced apoptosis as well as cellular necrosis. Importantly, myoblasts were more sensitive to the cytotoxic effects induced by 1-DSL rather than by saturated fatty acids, such as palmitate, which are critical mediators of skeletal muscle dysfunction in T2DM. Additionally, 1-DSL significantly reduced the migration ability of myoblasts and the differentiation process of myoblasts into myotubes. 1-DSL also triggered autophagy in myoblasts and significantly reduced insulin-stimulated glucose uptake in myotubes. These findings demonstrate that 1-DSL directly compromise the functionality of skeletal muscle cells and suggest that increased levels of 1-DSL observed during the development of T2DM are likely to contribute to the pathophysiology of muscle dysfunction detected in this disease.
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Affiliation(s)
- Duyen Tran
- School of Pharmacy and Pharmacology, College of Health and Medicine, University of Tasmania, Hobart, TAS, Australia
| | - Stephen Myers
- School of Health Science, College of Health and Medicine, University of Tasmania, Launceston, TAS, Australia
| | - Courtney McGowan
- School of Health Science, College of Health and Medicine, University of Tasmania, Launceston, TAS, Australia
- Sport Performance Optimization Research Team, School of Health Sciences, College of Health and Medicine, University of Tasmania, Launceston, TAS, Australia
| | - Darren Henstridge
- School of Health Science, College of Health and Medicine, University of Tasmania, Launceston, TAS, Australia
| | - Rajaraman Eri
- School of Health Science, College of Health and Medicine, University of Tasmania, Launceston, TAS, Australia
| | - Sabrina Sonda
- School of Health Science, College of Health and Medicine, University of Tasmania, Launceston, TAS, Australia
| | - Vanni Caruso
- School of Pharmacy and Pharmacology, College of Health and Medicine, University of Tasmania, Hobart, TAS, Australia
- Institute for Research on Pain, Istituto di Formazione e Ricerca in Scienze Algologiche (ISAL) Foundation, Rimini, Italy
- *Correspondence: Vanni Caruso,
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3
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mRNA expression characteristics are different in irreversibly atrophic intrinsic muscles of the forepaw compared with reversibly atrophic biceps in a rat model of obstetric brachial plexus palsy (OBPP). J Muscle Res Cell Motil 2016; 37:17-25. [PMID: 26902607 DOI: 10.1007/s10974-016-9442-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2015] [Accepted: 02/16/2016] [Indexed: 10/22/2022]
Abstract
In obstetric brachial plexus palsy (OBPP), irreversible muscle atrophy occurs much faster in intrinsic muscles of the hand than in the biceps. To elucidate the mechanisms involved, mRNA expression profiles of denervated intrinsic muscles of the forepaw (IMF) and denervated biceps were determined by microarray using the rat model of OBPP where atrophy of IMF is irreversible while atrophy of biceps is reversible. Relative to contralateral control, 446 dysregulated mRNAs were detected in denervated IMF and mapped to 51 KEGG pathways, and 830 dysregulated mRNAs were detected in denervated biceps and mapped to 52 KEGG pathways. In denervated IMF, 10 of the pathways were related to muscle regulation; six with down-regulated and one with up-regulated mRNAs. The remaining three pathways had both up- and down-regulated mRNAs. In denervated biceps, 13 of the pathways were related to muscle regulation, six with up-regulated and seven with down-regulated mRNAs. Five of the pathways with up-regulated mRNAs were related to regrowth and differentiation of muscle cells. Among the 23 pathways with dysregulated mRNAs, 13 were involved in regulation of neuromuscular junctions. Our results demonstrated that mRNAs expression characteristics in irreversibly atrophic denervated IMF were different from those in reversibly atrophic denervated biceps; dysregulated mRNAs in IMF were associated with inactive pathways of muscle regulation, and in biceps they were associated with active pathways of regrowth and differentiation. Lack of self-repair potential in IMF may be a major reason why atrophy of IMF becomes irreversible much faster than atrophy of biceps after denervation.
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4
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Han AA, Currie HN, Loos MS, Vrana JA, Fabyanic EB, Prediger MS, Boyd JW. Spatiotemporal phosphoprotein distribution and associated cytokine response of a traumatic injury. Cytokine 2015; 79:12-22. [PMID: 26702931 DOI: 10.1016/j.cyto.2015.12.006] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2015] [Revised: 11/25/2015] [Accepted: 12/06/2015] [Indexed: 02/02/2023]
Abstract
Molecular mechanisms of wound healing have been extensively characterized, providing a better understanding of the processes involved in wound repair and offering advances in treatment methods. Both spatial and temporal investigations of injury biomarkers have helped to pinpoint significant time points and locations during the recovery process, which may be vital in managing the injury and making the appropriate diagnosis. This study addresses spatial and temporal differences of phosphoproteins found in skeletal muscle tissue following a traumatic femur fracture, which were further compared to co-localized cytokine responses. In particular, several proteins (Akt, ERK, c-Jun, CREB, JNK, MEK1, and p38) and post-translational phosphorylations (p-Akt, p-c-Jun, p-CREB, p-ERK1/2, p-MEK1, p-p38, p-GSK3α/β, p-HSP27, p-p70S6K, and p-STAT3) associated with inflammation, new tissue formation, and remodeling were found to exhibit significant spatial and temporal differences in response to the traumatic injury. Quadratic discriminant analysis of all measured responses, including cytokine concentrations from previously published findings, was used to classify temporal and spatial observations at high predictive rates, further confirming that distinct spatiotemporal distributions for total protein, phosphorylation signaling, and cytokine (IL-1α, IL-1ß, IL2, IL6, TNF-α, and MIP-1α) responses exist. Finally, phosphoprotein measurements were found to be significantly correlated to cytokine concentrations, suggesting coordinated intracellular and extracellular activity during crucial periods of repair. This study represents a first attempt to monitor and assess integrated changes in extracellular and intracellular signaling in response to a traumatic injury in muscle tissues, which may provide a framework for future research to improve both our understanding of wounds and their treatment options.
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Affiliation(s)
- Alice A Han
- C. Eugene Bennett Department of Chemistry, West Virginia University, Morgantown, WV, USA
| | - Holly N Currie
- C. Eugene Bennett Department of Chemistry, West Virginia University, Morgantown, WV, USA
| | - Matthew S Loos
- Department of Surgery, West Virginia University, Morgantown, WV, USA
| | - Julie A Vrana
- C. Eugene Bennett Department of Chemistry, West Virginia University, Morgantown, WV, USA
| | - Emily B Fabyanic
- C. Eugene Bennett Department of Chemistry, West Virginia University, Morgantown, WV, USA
| | - Maren S Prediger
- C. Eugene Bennett Department of Chemistry, West Virginia University, Morgantown, WV, USA
| | - Jonathan W Boyd
- C. Eugene Bennett Department of Chemistry, West Virginia University, Morgantown, WV, USA.
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5
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Jiang W, Zhu J, Zhuang X, Zhang X, Luo T, Esser KA, Ren H. Lipin1 Regulates Skeletal Muscle Differentiation through Extracellular Signal-regulated Kinase (ERK) Activation and Cyclin D Complex-regulated Cell Cycle Withdrawal. J Biol Chem 2015; 290:23646-55. [PMID: 26296887 DOI: 10.1074/jbc.m115.686519] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2015] [Indexed: 12/20/2022] Open
Abstract
Lipin1, an intracellular protein, plays critical roles in controlling lipid synthesis and energy metabolism through its enzymatic activity and nuclear transcriptional functions. Several mouse models of skeletal muscle wasting are associated with lipin1 mutation or altered expression. Recent human studies have suggested that children with homozygous null mutations in the LPIN1 gene suffer from rhabdomyolysis. However, the underlying pathophysiologic mechanism is still poorly understood. In the present study we examined whether lipin1 contributes to regulating muscle regeneration. We characterized the time course of skeletal muscle regeneration in lipin1-deficient fld mice after injury. We found that fld mice exhibited smaller regenerated muscle fiber cross-sectional areas compared with wild-type mice in response to injury. Our results from a series of in vitro experiments suggest that lipin1 is up-regulated and translocated to the nucleus during myoblast differentiation and plays a key role in myogenesis by regulating the cytosolic activation of ERK1/2 to form a complex and a downstream effector cyclin D3-mediated cell cycle withdrawal. Overall, our study reveals a previously unknown role of lipin1 in skeletal muscle regeneration and expands our understanding of the cellular and molecular mechanisms underlying skeletal muscle regeneration.
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Affiliation(s)
- Weihua Jiang
- From the Division of Cardiovascular Medicine, Department of Internal Medicine, Saha Cardiovascular Center
| | - Jing Zhu
- From the Division of Cardiovascular Medicine, Department of Internal Medicine, Saha Cardiovascular Center
| | - Xun Zhuang
- From the Division of Cardiovascular Medicine, Department of Internal Medicine, Saha Cardiovascular Center
| | - Xiping Zhang
- Department of Physiology, University of Kentucky, Lexington, Kentucky 40536
| | - Tao Luo
- From the Division of Cardiovascular Medicine, Department of Internal Medicine, Saha Cardiovascular Center
| | - Karyn A Esser
- Department of Physiology, University of Kentucky, Lexington, Kentucky 40536
| | - Hongmei Ren
- From the Division of Cardiovascular Medicine, Department of Internal Medicine, Saha Cardiovascular Center,
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6
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Leal ALRC, Albuquerque JPC, Matos MS, Fortunato RS, Carvalho DP, Rosenthal D, da Costa VMC. Thyroid hormones regulate skeletal muscle regeneration after acute injury. Endocrine 2015; 48:233-40. [PMID: 24798447 DOI: 10.1007/s12020-014-0271-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/04/2014] [Accepted: 04/08/2014] [Indexed: 01/21/2023]
Abstract
We evaluated the effects of hypo- and hyperthyroid statuses during the initial phase of skeletal muscle regeneration in rats. To induce hypo- or hyperthyroidism, adult male Wistar rats were treated with methimazole (0.03%) or T4 (10 μg/100 g), respectively, for 10 days. Three days before sacrifice, a crush injury was produced in the solear muscles of one half of the animals, while the other half remained intact. T3, T4, TSH, and leptin serum levels were not affected by the injury. Serum T3 and T4 levels were significantly increased in hyperthyroid and hyper-injury animals. Hypothyroidism was confirmed by the significant increase in serum TSH levels in hypothyroid and hypo-injury animals. Injury increased cell infiltration and macrophage accumulation especially in hyperthyroid animals. Both type 2 and type 3 deiodinases were induced by lesion, and the opposite occurred with the type 1 isoform, at least in the control and hyperthyroid groups. Injury increased both MyoD and myogenin expression in all the studied groups, but only MyoD expression was increased by thyroidal status only at the protein level. We conclude that thyroid hormones modulate skeletal muscle regeneration possibly by regulating the inflammatory process, as well as MyoD and myogenin expression in the injured tissue.
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Affiliation(s)
- Anna Lúcia R C Leal
- Laboratório de Fisiologia Endócrina Doris Rosenthal, Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, CCS, bloco G, Cidade Universitária, Ilha do Fundão, Rio de Janeiro, 21949-900, Brazil
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7
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Ko MH, Li CY, Lee CF, Chang CK, Fang SH. Scratch wound closure of myoblasts and myotubes is reduced by inflammatory mediators. Int Wound J 2014; 13:680-5. [PMID: 25123045 DOI: 10.1111/iwj.12346] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2014] [Revised: 06/27/2014] [Accepted: 07/05/2014] [Indexed: 11/27/2022] Open
Abstract
Complex interactions exist between muscle repair processes and acute inflammatory responses that are initiated by exercise-induced muscle damage. The purpose of this study was to examine whether inflammatory mediators secreted by activated macrophages affect the migration of myogenic cells to the injury site. Migration was measured using a scratch wound closure assay in C2 C12 -derived myogenic cells incubated in activated macrophage-conditioned medium. Both myoblast and myotube migrations were significantly reduced in activated macrophage-conditioned medium compared with control medium. Furthermore, we demonstrated that the inhibitory effect on myoblast and myotube migrations was mediated, at least in part, by the two major cytokines secreted by activated macrophages, tumour necrosis factor (TNF)-α and interleukin (IL)-6. These findings suggest that the migration rate of myogenic cells may be reduced by inflammatory mediators. It may provide useful insights for future researches on the role of macrophages in the process of muscle repair and regeneration.
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Affiliation(s)
- Miau-Hwa Ko
- Department of Anatomy, School of Medicine, China Medical University, Taichung, Taiwan
| | - Chia-Yang Li
- Department of Genome Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Chun-Feng Lee
- Department of Oral and Maxillofacial Surgery, Taichung Tzu Chi General Hospital, Taichung, Taiwan
| | - Chen-Kang Chang
- Sport Science Research Center, National Taiwan University of Physical Education and Sport, Taichung, Taiwan
| | - Shih-Hua Fang
- Institute of Athletics, National Taiwan University of Physical Education and Sport, Taichung, Taiwan.
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8
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Okamoto M, Tanaka H, Okada K, Kuroda Y, Nishimoto S, Murase T, Yoshikawa H. Methylcobalamin promotes proliferation and migration and inhibits apoptosis of C2C12 cells via the Erk1/2 signaling pathway. Biochem Biophys Res Commun 2013; 443:871-5. [PMID: 24342621 DOI: 10.1016/j.bbrc.2013.12.056] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2013] [Accepted: 12/10/2013] [Indexed: 10/25/2022]
Abstract
Methylcobalamin (MeCbl) is a vitamin B12 analog that has some positive effects on peripheral nervous disorders. Although some previous studies revealed the effects of MeCbl on neurons, its effect on the muscle, which is the final target of motoneuron axons, remains to be elucidated. This study aimed to determine the effect of MeCbl on the muscle. We found that MeCbl promoted the proliferation and migration of C2C12 myoblasts in vitro and that these effects are mediated by the Erk1/2 signaling pathway without affecting the activity of the Akt signaling pathway. We also demonstrated that MeCbl inhibits C2C12 cell apoptosis during differentiation. Our results suggest that MeCbl has beneficial effects on the muscle in vitro. MeCbl administration may provide a novel therapeutic approach for muscle injury or degenerating muscle after denervation.
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Affiliation(s)
- Michio Okamoto
- Department of Orthopaedic Surgery, Osaka University Graduate School of Medicine, 2-2 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Hiroyuki Tanaka
- Department of Orthopaedic Surgery, Osaka University Graduate School of Medicine, 2-2 Yamadaoka, Suita, Osaka 565-0871, Japan.
| | - Kiyoshi Okada
- Department of Orthopaedic Surgery, Osaka University Graduate School of Medicine, 2-2 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Yusuke Kuroda
- Department of Orthopaedic Surgery, Kansai Rosai Hospital, 3-1-69 Inabaso, Amagasaki, Hyogo 660-8511, Japan
| | - Shunsuke Nishimoto
- Department of Orthopaedic Surgery, Osaka University Graduate School of Medicine, 2-2 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Tsuyoshi Murase
- Department of Orthopaedic Surgery, Osaka University Graduate School of Medicine, 2-2 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Hideki Yoshikawa
- Department of Orthopaedic Surgery, Osaka University Graduate School of Medicine, 2-2 Yamadaoka, Suita, Osaka 565-0871, Japan
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9
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Andres-Mateos E, Mejias R, Soleimani A, Lin BM, Burks TN, Marx R, Lin B, Zellars RC, Zhang Y, Huso DL, Marr TG, Leinwand LA, Merriman DK, Cohn RD. Impaired skeletal muscle regeneration in the absence of fibrosis during hibernation in 13-lined ground squirrels. PLoS One 2012; 7:e48884. [PMID: 23155423 PMCID: PMC3498346 DOI: 10.1371/journal.pone.0048884] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2012] [Accepted: 10/02/2012] [Indexed: 02/06/2023] Open
Abstract
Skeletal muscle atrophy can occur as a consequence of immobilization and/or starvation in the majority of vertebrates studied. In contrast, hibernating mammals are protected against the loss of muscle mass despite long periods of inactivity and lack of food intake. Resident muscle-specific stem cells (satellite cells) are known to be activated by muscle injury and their activation contributes to the regeneration of muscle, but whether satellite cells play a role in hibernation is unknown. In the hibernating 13-lined ground squirrel we show that muscles ablated of satellite cells were still protected against atrophy, demonstrating that satellite cells are not involved in the maintenance of skeletal muscle during hibernation. Additionally, hibernating skeletal muscle showed extremely slow regeneration in response to injury, due to repression of satellite cell activation and myoblast differentiation caused by a fine-tuned interplay of p21, myostatin, MAPK, and Wnt signaling pathways. Interestingly, despite long periods of inflammation and lack of efficient regeneration, injured skeletal muscle from hibernating animals did not develop fibrosis and was capable of complete recovery when animals emerged naturally from hibernation. We propose that hibernating squirrels represent a new model system that permits evaluation of impaired skeletal muscle remodeling in the absence of formation of tissue fibrosis.
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Affiliation(s)
- Eva Andres-Mateos
- McKusick-Nathans Institute of Genetic Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland, United States of America
| | - Rebeca Mejias
- McKusick-Nathans Institute of Genetic Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland, United States of America
| | - Arshia Soleimani
- McKusick-Nathans Institute of Genetic Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland, United States of America
| | - Brian M. Lin
- McKusick-Nathans Institute of Genetic Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland, United States of America
| | - Tyesha N. Burks
- McKusick-Nathans Institute of Genetic Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland, United States of America
| | - Ruth Marx
- McKusick-Nathans Institute of Genetic Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland, United States of America
| | - Benjamin Lin
- McKusick-Nathans Institute of Genetic Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland, United States of America
| | - Richard C. Zellars
- Department of Radiation Oncology and Molecular Radiation Sciences, Johns Hopkins School of Medicine, Baltimore, Maryland, United States of America
| | - Yonggang Zhang
- Department of Radiation Oncology and Molecular Radiation Sciences, Johns Hopkins School of Medicine, Baltimore, Maryland, United States of America
| | - David L. Huso
- Department of Molecular and Comparative Pathobiology, Johns Hopkins University School of Medicine, Baltimore, Maryland, United States of America
| | - Tom G. Marr
- Hiberna Corporation, Boulder, Colorado, United States of America
| | - Leslie A. Leinwand
- Department of Molecular, Cellular, and Developmental Biology, University of Colorado, Boulder, Colorado, United States of America
| | - Dana K. Merriman
- Department of Biology and Microbiology, University of Wisconsin, Oshkosh, Wisconsin, United States of America
| | - Ronald D. Cohn
- McKusick-Nathans Institute of Genetic Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland, United States of America
- Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, Maryland, United States of America
- Department of Pediatrics, Johns Hopkins University School of Medicine, Baltimore, Maryland, United States of America
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10
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Nakazato K, Ochi E, Waga T. Dietary apple polyphenols have preventive effects against lengthening contraction-induced muscle injuries. Mol Nutr Food Res 2009; 54:364-72. [DOI: 10.1002/mnfr.200900145] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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11
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The role of mitogen-activated protein kinases in hydrogen peroxide-induced myogenic cell apoptosis. ACTA ACUST UNITED AC 2009. [DOI: 10.2478/v10054-008-0043-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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12
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Yahiaoui L, Gvozdic D, Danialou G, Mack M, Petrof BJ. CC family chemokines directly regulate myoblast responses to skeletal muscle injury. J Physiol 2008; 586:3991-4004. [PMID: 18566004 DOI: 10.1113/jphysiol.2008.152090] [Citation(s) in RCA: 86] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022] Open
Abstract
Chemokines have been implicated in the promotion of leucocyte trafficking to diseased muscle. The purpose of this study was to determine whether a subset of inflammatory chemokines are able to directly drive myoblast proliferation, an essential early component of muscle regeneration, in a manner which is entirely independent of leucocytes. Cultured myoblasts (C2C12) were exposed to monocyte chemoattractant protein-1 (MCP-1; CCL2), macrophage inflammatory protein-1alpha (MIP-1alpha; CCL3) or MIP-1beta (CCL4). All chemokines induced phosphorylation of extracellular signal-regulated kinase (ERK)1/2 mitogen-activated protein kinase (MAPK) and greatly increased myoblast proliferative responses. Chemokine-induced myoblast proliferation was abolished by pertussis toxin and the MEK1/2 inhibitor U0126, implicating both Galphai-coupled receptors and ERK1/2-dependent signalling. Myoblasts expressed receptors for all of the chemokines tested, and mitogenic responses were specifically inhibited by antibodies directed against CC family chemokine receptors 2 and 5 (CCR2 and CCR5). Within an in vitro myogenic wound healing assay devoid of leucocytes, all chemokines significantly accelerated the time course of myoblast wound closure after mechanical injury. Injections of MCP-1 into cardiotoxin-injured skeletal muscles in vivo also suppressed expression of the differentiation marker myogenin, consistent with a mitogenic effect. Taken together, our results indicate that CC chemokines have potent and direct effects on myoblast behaviour, thus indicating a novel role in muscle repair beyond leucocyte chemoattraction. Therefore, interventions aimed at modulating the balance between myoblast and leucocyte effects of CC chemokines in injured muscle could represent a novel strategy for the treatment of destructive muscle pathologies.
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Affiliation(s)
- Linda Yahiaoui
- Meakins-Christie Laboratories, McGill University, 3626 St Urbain Street, Montreal, Quebec, Canada H2X 2P2
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13
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Shi H, Scheffler JM, Pleitner JM, Zeng C, Park S, Hannon KM, Grant AL, Gerrard DE. Modulation of skeletal muscle fiber type by mitogen‐activated protein kinase signaling. FASEB J 2008; 22:2990-3000. [DOI: 10.1096/fj.07-097600] [Citation(s) in RCA: 63] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Hao Shi
- Department of Animal SciencesPurdue UniversityWest LafayetteIndianaUSA
| | | | | | - Caiyun Zeng
- Department of Animal SciencesPurdue UniversityWest LafayetteIndianaUSA
| | - Sungkwon Park
- Department of Animal SciencesPurdue UniversityWest LafayetteIndianaUSA
| | - Kevin M. Hannon
- Department of Basic Medical SciencesPurdue UniversityWest LafayetteIndianaUSA
| | - Alan L. Grant
- Department of Animal SciencesPurdue UniversityWest LafayetteIndianaUSA
| | - David E. Gerrard
- Department of Animal SciencesPurdue UniversityWest LafayetteIndianaUSA
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14
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Pisani DF, Dechesne CA. Skeletal muscle HIF-1alpha expression is dependent on muscle fiber type. ACTA ACUST UNITED AC 2005; 126:173-8. [PMID: 16043777 PMCID: PMC2266573 DOI: 10.1085/jgp.200509265] [Citation(s) in RCA: 62] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Oxygen homeostasis is an essential regulation system for cell energy production and survival. The oxygen-sensitive subunit α of the hypoxia inducible factor-1 (HIF-1) complex is a key protein of this system. In this work, we analyzed mouse and rat HIF-1α protein and mRNA expression in parallel to energetic metabolism variations within skeletal muscle. Two physiological situations were studied using HIF-1α–specific Western blotting and semiquantitative RT-PCR. First, we compared HIF-1α expression between the predominantly oxidative soleus muscle and three predominantly glycolytic muscles. Second, HIF-1α expression was assessed in an energy metabolism switch model that was based on muscle disuse. These two in vivo situations were compared with the in vitro HIF-1α induction by CoCl2 treatment on C2C12 mouse muscle cells. HIF-1α mRNA and protein levels were found to be constitutively higher in the more glycolytic muscles compared with the more oxidative muscles. Our results gave rise to the hypothesis that the oxygen homeostasis regulation system depends on the fiber type.
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Affiliation(s)
- Didier F Pisani
- CNRS UMR 6548, Faculté des Sciences, 06108 Nice cedex 2, France
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Chen SE, Gerken E, Zhang Y, Zhan M, Mohan RK, Li AS, Reid MB, Li YP. Role of TNF-{alpha} signaling in regeneration of cardiotoxin-injured muscle. Am J Physiol Cell Physiol 2005; 289:C1179-87. [PMID: 16079187 PMCID: PMC3099530 DOI: 10.1152/ajpcell.00062.2005] [Citation(s) in RCA: 118] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Recent data suggest a physiological role for the proinflammatory cytokine TNF-alpha in skeletal muscle regeneration. However, the underlying mechanism is not understood. In the present study, we analyzed TNF-alpha-activated signaling pathways involved in myogenesis in soleus muscle injured by cardiotoxin (CTX) in TNF-alpha receptor double-knockout mice (p55(-/-)p75(-/-)). We found that activation of p38MAPK, which is critical for myogenesis, was blocked in CTX-injured p55(-/-)p75(-/-) soleus on day 3 postinjury when myogenic differentiation was being initiated, while activation of ERK1/2 and JNK MAPK, as well as transcription factor NF-kappaB, was not reduced. Consequently, the phosphorylation of transcription factor myocyte enhancer factor-2C, which is catalyzed by p38 and crucial for the expression of muscle-specific genes, was blunted. Meanwhile, expression of p38-dependent differentiation marker myogenin and p21 were suppressed. In addition, expression of cyclin D1 was fivefold that in wild-type (WT) soleus. These results suggest that myogenic differentiation is blocked or delayed in the absence of TNF-alpha signaling. Histological studies revealed abnormalities in regenerating p55(-/-)p75(-/-) soleus. On day 5 postinjury, new myofiber formation was clearly observed in WT soleus but not in p55(-/-)p75(-/-) soleus. To the contrary, p55(-/-)p75(-/-) soleus displayed renewed inflammation and dystrophic calcification. On day 12 postinjury, the muscle architecture of WT soleus was largely restored. Yet, in p55(-/-)p75(-/-) soleus, multifocal areas of inflammation, myofiber death, and myofibers with smaller cross-sectional area were observed. Functional studies demonstrated an attenuated recovery of contractile force in injured p55(-/-)p75(-/-) soleus. These data suggest that TNF-alpha signaling plays a critical regulatory role in muscle regeneration.
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Affiliation(s)
- Shuen-Ei Chen
- Department of Medicine, Baylor College of Medicine, One Baylor Plaza 520B, Houston, TX 77030, USA
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Fioretti B, Pietrangelo T, Catacuzzeno L, Franciolini F. Intermediate-conductance Ca2+-activated K+ channel is expressed in C2C12 myoblasts and is downregulated during myogenesis. Am J Physiol Cell Physiol 2005; 289:C89-96. [PMID: 15743891 DOI: 10.1152/ajpcell.00369.2004] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
We report here the expression in C2C12 myoblasts of the intermediate-conductance Ca2+-activated K+ (IK(Ca)) channel. The IK(Ca) current, recorded under perforated-patch configuration, had a transient time course when activated by ionomycin (0.5 microM; peak current density 26.2 +/- 3.7 pA/pF; n = 10), but ionomycin (0.5 microM) + 5,6-dichloro-1-ethyl-1,3-dihydro-2H-benzimidazol-2-one (100 microM) evoked a stable outward current (28.4 +/- 8.2 pA/pF; n = 11). The current was fully inhibited by charybdotoxin (200 nM), clotrimazole (2 microM), and 5-nitro-2-(3-phenylpropylamino)benzoic acid (300 microM), but not by tetraethylammonium (1 mM) or D-tubocurarine (300 microM). Congruent with the IK(Ca) channel, elevation of intracellular Ca2+ in inside-out patches resulted in the activation of a voltage-insensitive K+ channel with weak inward rectification, a unitary conductance of 38 +/- 6 pS (at negative voltages), and an IC50 for Ca2+ of 530 nM. The IK(Ca) channel was activated metabotropically by external application of ATP (100 microM), an intracellular Ca2+ mobilizer. Under current-clamp conditions, ATP application resulted in a membrane hyperpolarization of approximately 35 mV. The IK(Ca) current downregulated during myogenesis, ceasing to be detectable 4 days after the myoblasts were placed in differentiating medium. Downregulation was prevented by the myogenic suppressor agent basic FGF (bFGF). We also found that block of the IK(Ca) channel by charybdotoxin did not inhibit bFGF-sustained myoblast proliferation. These observations show that in C2C12 myoblasts the IK(Ca) channel expression correlates inversely with differentiation, yet it does not appear to have a role in myoblast proliferation.
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Affiliation(s)
- Bernard Fioretti
- Dipartimento Biologia Cellulare e Molecolare, Università di Perugia, Via Pascoli 1, I-06123 Perugia, Italy
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Pisani DF, Pierson PM, Massoudi A, Leclerc L, Chopard A, Marini JF, Dechesne CA. Myodulin is a novel potential angiogenic factor in skeletal muscle. Exp Cell Res 2004; 292:40-50. [PMID: 14720505 DOI: 10.1016/j.yexcr.2003.08.017] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
We examined the expression and function of a gene we previously cloned from its downregulation in a muscle atrophy model. The encoded protein was named myodulin because of sequence homologies with the cartilage-specific chondromodulin-I (ChM-I) protein, its restricted expression in skeletal muscle tissue, and its modulating properties on vascular endothelial cells described here. We investigated the expression of myodulin in muscle fibers and cultured muscle cells. Myodulin RNA messengers were found in muscle fibers and their tendon extensions. Overexpression of myodulin fused to a FLAG peptide showed evidence of a muscle cell surface protein. Myodulin functions were assessed from similarities with chondromodulin-I. Coculture experiments using C(2)C(12) mouse myoblasts or myotubes, which stably overexpress myodulin, with H5V mouse cardiac vascular endothelial cells revealed that myodulin had a very active role in the invasive action of endothelial cells, without any evidence of extracellular myodulin secretion. Our results suggest that myodulin may be a muscle angiogenic factor operating through direct cell-to-cell interactions. This role is consistent with the correlation between modulations in myodulin expression and modifications in muscle microvascularization associated with activity-dependent muscle mass variations.
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Affiliation(s)
- Didier F Pisani
- CNRS UMR 6548, Faculté des Sciences, Parc Valrose 06108 Nice cedex 2, France
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