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Van Vossel K, Hardeel J, Van der Stede T, Weyns A, Boone J, Blemker SS, Derave W, Lievens E. Influence of intramuscular steroid receptor content and fiber capillarization on skeletal muscle hypertrophy. Scand J Med Sci Sports 2024; 34:e14668. [PMID: 38802727 DOI: 10.1111/sms.14668] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2024] [Revised: 05/04/2024] [Accepted: 05/06/2024] [Indexed: 05/29/2024]
Abstract
Multiple intramuscular variables have been proposed to explain the high variability in resistance training induced muscle hypertrophy across humans. This study investigated if muscular androgen receptor (AR), estrogen receptor α (ERα) and β (ERβ) content and fiber capillarization are associated with fiber and whole-muscle hypertrophy after chronic resistance training. Male (n = 11) and female (n = 10) resistance training novices (22.1 ± 2.2 years) trained their knee extensors 3×/week for 10 weeks. Vastus lateralis biopsies were taken at baseline and post the training period to determine changes in fiber type specific cross-sectional area (CSA) and fiber capillarization by immunohistochemistry and, intramuscular AR, ERα and ERβ content by Western blotting. Vastus lateralis volume was quantified by MRI-based 3D segmentation. Vastus lateralis muscle volume significantly increased over the training period (+7.22%; range: -1.82 to +18.8%, p < 0.0001) but no changes occurred in all fiber (+1.64%; range: -21 to +34%, p = 0.869), type I fiber (+1.33%; range: -24 to +41%, p = 0.952) and type II fiber CSA (+2.19%; range: -23 to +29%, p = 0.838). However, wide inter-individual ranges were found. Resistance training increased the protein expression of ERα but not ERβ and AR, and the increase in ERα content was positively related to changes in fiber CSA. Only for the type II fibers, the baseline capillary-to-fiber-perimeter index was positively related to type II fiber hypertrophy but not to whole muscle responsiveness. In conclusion, an upregulation of ERα content and an adequate initial fiber capillarization may be contributing factors implicated in muscle fiber hypertrophy responsiveness after chronic resistance training.
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Affiliation(s)
- Kim Van Vossel
- Department of Movement and Sports Sciences, Ghent University, Ghent, Belgium
| | - Julie Hardeel
- Department of Movement and Sports Sciences, Ghent University, Ghent, Belgium
| | - Thibaux Van der Stede
- Department of Movement and Sports Sciences, Ghent University, Ghent, Belgium
- Department of Nutrition, Exercise and Sports, University of Copenhagen, Copenhagen, Denmark
| | - Anneleen Weyns
- Department of Movement and Sports Sciences, Ghent University, Ghent, Belgium
| | - Jan Boone
- Department of Movement and Sports Sciences, Ghent University, Ghent, Belgium
| | - Silvia Salinas Blemker
- Department of Biomedical Engineering, University of Virginia, Charlottesville, VA, USA
- Springbok Analytics, Charlottesville, VA, USA
| | - Wim Derave
- Department of Movement and Sports Sciences, Ghent University, Ghent, Belgium
| | - Eline Lievens
- Department of Movement and Sports Sciences, Ghent University, Ghent, Belgium
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2
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Zahr T, Boda VK, Ge J, Yu L, Wu Z, Que J, Li W, Qiang L. Small molecule conjugates with selective estrogen receptor β agonism promote anti-aging benefits in metabolism and skin recovery. Acta Pharm Sin B 2024; 14:2137-2152. [PMID: 38799642 PMCID: PMC11119546 DOI: 10.1016/j.apsb.2024.01.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2023] [Revised: 12/13/2023] [Accepted: 01/05/2024] [Indexed: 05/29/2024] Open
Abstract
Estrogen is imperative to mammalian reproductivity, metabolism, and aging. However, the hormone activating estrogen receptor (ERs) α can cause major safety concerns due to the enrichment of ERα in female tissues and certain malignancies. In contrast, ERβ is more broadly expressed in metabolic tissues and the skin. Thus, it is desirable to generate selective ERβ agonist conjugates for maximizing the therapeutic effects of ERs while minimizing the risks of ERα activation. Here, we report the design and production of small molecule conjugates containing selective non-steroid ERβ agonists Gtx878 or genistein. Treatment of aged mice with our synthesized conjugates improved aging-associated declines in insulin sensitivity, visceral adipose integrity, skeletal muscle function, and skin health, with validation in vitro. We further uncovered the benefits of ERβ conjugates in the skin using two inducible skin injury mouse models, showing increased skin basal cell proliferation, epidermal thickness, and wound healing. Therefore, our ERβ-selective agonist conjugates offer novel therapeutic potential to improve aging-associated conditions and aid in rejuvenating skin health.
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Affiliation(s)
- Tarik Zahr
- Naomi Berrie Diabetes Center, Columbia University, New York, NY 10032, USA
- Department of Molecular Pharmacology and Therapeutics, Columbia University, New York, NY 10032, USA
| | - Vijay K. Boda
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Tennessee Health Science Center, Memphis, TN 38163, USA
- Drug Discovery Center, College of Pharmacy, University of Tennessee Health Science Center, Memphis, TN 38163, USA
| | - Jian Ge
- Division of Digestive and Liver Diseases, Columbia University, New York, NY 10032, USA
- Center for Human Development, Columbia University, New York, NY 10027, USA
| | - Lexiang Yu
- Naomi Berrie Diabetes Center, Columbia University, New York, NY 10032, USA
- Department of Pathology and Cell Biology, Columbia University, New York, NY 10032, USA
| | - Zhongzhi Wu
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Tennessee Health Science Center, Memphis, TN 38163, USA
- Drug Discovery Center, College of Pharmacy, University of Tennessee Health Science Center, Memphis, TN 38163, USA
| | - Jianwen Que
- Division of Digestive and Liver Diseases, Columbia University, New York, NY 10032, USA
- Center for Human Development, Columbia University, New York, NY 10027, USA
- Department of Medicine, Columbia University, New York, NY 10032, USA
| | - Wei Li
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Tennessee Health Science Center, Memphis, TN 38163, USA
- Drug Discovery Center, College of Pharmacy, University of Tennessee Health Science Center, Memphis, TN 38163, USA
| | - Li Qiang
- Naomi Berrie Diabetes Center, Columbia University, New York, NY 10032, USA
- Department of Pathology and Cell Biology, Columbia University, New York, NY 10032, USA
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3
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Theret M, Chazaud B. Skeletal muscle niche, at the crossroad of cell/cell communications. Curr Top Dev Biol 2024; 158:203-220. [PMID: 38670706 DOI: 10.1016/bs.ctdb.2024.01.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/28/2024]
Abstract
Skeletal muscle is composed of a variety of tissue and non-tissue resident cells that participate in homeostasis. In particular, the muscle stem cell niche is a dynamic system, requiring direct and indirect communications between cells, involving local and remote cues. Interactions within the niche must happen in a timely manner for the maintenance or recovery of the homeostatic niche. For instance, after an injury, pro-myogenic cues delivered too early will impact on muscle stem cell proliferation, delaying the repair process. Within the niche, myofibers, endothelial cells, perivascular cells (pericytes, smooth muscle cells), fibro-adipogenic progenitors, fibroblasts, and immune cells are in close proximity with each other. Each cell behavior, membrane profile, and secretome can interfere with muscle stem cell fate and skeletal muscle regeneration. On top of that, the muscle stem cell niche can also be modified by extra-muscle (remote) cues, as other tissues may act on muscle regeneration via the production of circulating factors or the delivery of cells. In this review, we highlight recent publications evidencing both local and remote effectors of the muscle stem cell niche.
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Affiliation(s)
- Marine Theret
- School of Biomedical Engineering and Department of Medical Genetics University of British Columbia, Vancouver, BC, Canada
| | - Bénédicte Chazaud
- Institut NeuroMyoGène, Unité Physiopathologie et Génétique du Neurone et du Muscle, Université Claude Bernard Lyon 1, Inserm U1315, CNRS UMR 5261, Lyon, France.
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ISHIMARU M, OKANO A, MATSUI A, MURASE H, KOROSUE K, AKIYAMA K, TAYA K. Effects of an extended photoperiod on body composition of young Thoroughbreds in training. J Vet Med Sci 2024; 86:58-65. [PMID: 37967974 PMCID: PMC10849847 DOI: 10.1292/jvms.23-0349] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2023] [Accepted: 11/05/2023] [Indexed: 11/17/2023] Open
Abstract
The effects of an extended photoperiod (EP) on body composition of Thoroughbreds colts and fillies from December at one year old to April at two years old were investigated. Seventy-three Thoroughbreds reared and trained in Hidaka Training and Research Center, Japan Racing Association, Hokkaido were used. Forty-one horses were under the EP conditions from December 20 to April 15, and the 32 horses were under natural light alone as the control group. Body weight (BW), rump fat thickness (RFT), fat free mass (FFM) and percentage of fat (%F) were used as parameters of body composition. The present study revealed that BW and FFM increased with age in the EP group in colts. In fillies, BW increased with age in both the EP and the control group, however FFM increased with age only in the EP group. From December to April, only colts had a higher rate of increase in both BW and FFM in the EP group than in the control group. However, according to the mean rates of increase in FFM from January to March, the EP group was significantly higher than the control group in both sexes. Furthermore, monthly increase rate of FFM in March was significantly higher in the EP group than in the control group in both sexes. These results suggests that EP treatment to young Thoroughbreds in training at Hokkaido, which is shorter daylength in winter, accelerate the increase of FFM, representing muscle mass.
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Affiliation(s)
- Mutsuki ISHIMARU
- International Department, Japan Racing Association, Tokyo, Japan
| | - Atsushi OKANO
- Ritto Training Center, Japan Racing Association, Shiga, Japan
| | - Akira MATSUI
- Hidaka Training and Research Center, Japan Racing Association, Hokkaido, Japan
| | - Harutaka MURASE
- Hidaka Training and Research Center, Japan Racing Association, Hokkaido, Japan
| | - Kenji KOROSUE
- Hidaka Training and Research Center, Japan Racing Association, Hokkaido, Japan
| | | | - Kazuyoshi TAYA
- Laboratory of Veterinary Physiology, Cooperative Department of Veterinary Medicine, Faculty of Agriculture, Tokyo University of Agriculture and Technology,
Tokyo, Japan
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5
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Hosoi T, Yakabe M, Hashimoto S, Akishita M, Ogawa S. The roles of sex hormones in the pathophysiology of age-related sarcopenia and frailty. Reprod Med Biol 2024; 23:e12569. [PMID: 38476959 PMCID: PMC10927916 DOI: 10.1002/rmb2.12569] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2023] [Revised: 02/13/2024] [Accepted: 02/26/2024] [Indexed: 03/14/2024] Open
Abstract
Background Sarcopenia is an age-related condition characterized by a progressive and systemic decline in skeletal muscle mass, quality, and strength. The incidence of sarcopenia contains sex-specific aspects, indicating the contribution of sex hormones to its pathophysiology. This review focuses on changing trends in sarcopenia, discusses alterations in definitions and diagnostic criteria, and emphasizes the association between sarcopenia and sex hormones. Methods A literature search was performed on PubMed for related articles published between 1997 and December 2023 using appropriate keywords. Main Findings Results Advances in research have emphasized the significance of muscle quality and strength over muscle mass, resulting in new diagnostic criteria for sarcopenia. Androgens demonstrated anabolic effects on skeletal muscles and played a significant role in the pathophysiology of sarcopenia. In clinical settings, androgen replacement therapy has exhibited certain positive outcomes for treating sarcopenia, despite concerns about potential side effects. Conversely, estrogen is involved in skeletal muscle maintenance, but the detailed mechanisms remain unclear. Moreover, results regarding the clinical application of estrogen replacement therapy for treating sarcopenia remained inconsistent. Conclusion The elucidation of molecular mechanisms that involve sex hormones is eagerly awaited for novel therapeutic interventions for sarcopenia.
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Affiliation(s)
- Tatsuya Hosoi
- Department of Geriatric Medicine, Graduate School of Medicine The University of Tokyo Bunkyo-ku, Tokyo Japan
| | - Mitsutaka Yakabe
- Department of Geriatric Medicine, Graduate School of Medicine The University of Tokyo Bunkyo-ku, Tokyo Japan
| | - Seiji Hashimoto
- Department of Geriatric Medicine, Graduate School of Medicine The University of Tokyo Bunkyo-ku, Tokyo Japan
| | - Masahiro Akishita
- Department of Geriatric Medicine, Graduate School of Medicine The University of Tokyo Bunkyo-ku, Tokyo Japan
| | - Sumito Ogawa
- Department of Geriatric Medicine, Graduate School of Medicine The University of Tokyo Bunkyo-ku, Tokyo Japan
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6
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Kumar A, Narkar VA. Nuclear receptors as potential therapeutic targets in peripheral arterial disease and related myopathy. FEBS J 2023; 290:4596-4613. [PMID: 35942640 PMCID: PMC9908775 DOI: 10.1111/febs.16593] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2022] [Revised: 07/28/2022] [Accepted: 08/08/2022] [Indexed: 12/31/2022]
Abstract
Peripheral arterial disease (PAD) is a prevalent cardiovascular complication of limb vascular insufficiency, causing ischemic injury, mitochondrial metabolic damage and functional impairment in the skeletal muscle, and ultimately leading to immobility and mortality. While potential therapies have been mostly focussed on revascularization, none of the currently available pharmacological treatments are fully effective in PAD, often leading to amputations, particularly in chronic metabolic diseases. One major limitation of focussed angiogenesis and revascularization as a therapeutic strategy is a limited effect on metabolic restoration and muscle regeneration in the affected limb. Therefore, additional preclinical investigations are needed to discover novel treatment options for PAD preferably targeting multiple aspects of muscle recovery. In this review, we propose nuclear receptors expressed in the skeletal muscle as potential candidates for ischemic muscle repair in PAD. We review classic steroid and orphan receptors that have been reported to be involved in the regulation of paracrine muscle angiogenesis, oxidative metabolism, mitochondrial biogenesis and muscle regeneration, and discuss how these receptors could be critical for recovery from ischemic muscle damage. Furthermore, we identify existing gaps in our understanding of nuclear receptor signalling in the skeletal muscle and propose future areas of research that could be instrumental in exploring nuclear receptors as therapeutic candidates for treating PAD.
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Affiliation(s)
- Ashok Kumar
- Department of Pharmacological and Pharmaceutical Sciences, College of Pharmacy, University of Houston, Houston, TX 77204
| | - Vihang A. Narkar
- Brown Foundation Institute of Molecular Medicine, UTHealth McGovern Medical School, Houston, TX, 77030
- University of Texas MD Anderson and UTHealth Graduate School of Biomedical Sciences, Houston, TX, 77030
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7
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Sánchez-Mendoza LM, Pérez-Sánchez C, Rodríguez-López S, López-Pedrera C, Calvo-Rubio M, de Cabo R, Burón MI, González-Reyes JA, Villalba JM. Sex-specific metabolic adaptations in transgenic mice overexpressing cytochrome b 5 reductase-3. Free Radic Biol Med 2023; 207:144-160. [PMID: 37463636 DOI: 10.1016/j.freeradbiomed.2023.07.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/25/2023] [Revised: 06/14/2023] [Accepted: 07/11/2023] [Indexed: 07/20/2023]
Abstract
Cytochrome b5 reductase 3 (CYB5R3) activates respiratory metabolism in cellular systems and exerts a prolongevity action in transgenic mice overexpressing this enzyme, mimicking some of the beneficial effects of calorie restriction. The aim of our study was to investigate the role of sex on metabolic adaptations elicited by CYB5R3 overexpression, and how key markers related with mitochondrial function are modulated in skeletal muscle, one of the major contributors to resting energy expenditure. Young CYB5R3 transgenic mice did not exhibit the striking adaptations in carbon metabolism previously detected in older animals. CYB5R3 was efficiently overexpressed and targeted to mitochondria in skeletal muscle from transgenic mice regardless sex. Overexpression significantly elevated NADH in both sexes, although differences were not statistically significant for NAD+, and increased the abundance of cytochrome c and the fission protein DRP-1 in females but not in males. Moreover, while mitochondrial biogenesis and function markers (as TFAM, NRF-1 and cleaved SIRT3) were markedly upregulated by CYB5R3 overexpression in females, a downregulation was observed in males. Ultrastructural changes were also highlighted, with an increase in the number of mitochondria per surface unit, and in the size of intermyofibrillar mitochondria in transgenic females compared with their wild-type controls. Our results support that CYB5R3 overexpression upregulates markers consistent with enhanced mitochondrial biogenesis and function, and increases mitochondrial abundance in skeletal muscle, producing most of these potentially beneficial actions in females.
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Affiliation(s)
- Luz Marina Sánchez-Mendoza
- Departamento de Biología Celular, Fisiología e Inmunología, Universidad de Córdoba, Campus de Excelencia Internacional Agroalimentario, CeiA3, Córdoba, Spain.
| | - Carlos Pérez-Sánchez
- Departamento de Biología Celular, Fisiología e Inmunología, Universidad de Córdoba, Campus de Excelencia Internacional Agroalimentario, CeiA3, Córdoba, Spain; Rheumatology Service, Reina Sofia Hospital/ Maimonides Institute for Research in Biomedicine of Cordoba (IMIBIC)/University of Cordoba, Cordoba, Spain.
| | - Sandra Rodríguez-López
- Departamento de Biología Celular, Fisiología e Inmunología, Universidad de Córdoba, Campus de Excelencia Internacional Agroalimentario, CeiA3, Córdoba, Spain.
| | - Chary López-Pedrera
- Rheumatology Service, Reina Sofia Hospital/ Maimonides Institute for Research in Biomedicine of Cordoba (IMIBIC)/University of Cordoba, Cordoba, Spain.
| | - Miguel Calvo-Rubio
- Experimental Gerontology Section, Translational Gerontology Branch, National Institute on Aging, National Institutes of Health, Baltimore, MD, 21224, USA
| | - Rafael de Cabo
- Experimental Gerontology Section, Translational Gerontology Branch, National Institute on Aging, National Institutes of Health, Baltimore, MD, 21224, USA.
| | - María I Burón
- Departamento de Biología Celular, Fisiología e Inmunología, Universidad de Córdoba, Campus de Excelencia Internacional Agroalimentario, CeiA3, Córdoba, Spain.
| | - José A González-Reyes
- Departamento de Biología Celular, Fisiología e Inmunología, Universidad de Córdoba, Campus de Excelencia Internacional Agroalimentario, CeiA3, Córdoba, Spain.
| | - José M Villalba
- Departamento de Biología Celular, Fisiología e Inmunología, Universidad de Córdoba, Campus de Excelencia Internacional Agroalimentario, CeiA3, Córdoba, Spain.
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8
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Jomard C, Gondin J. Influence of sexual dimorphism on satellite cell regulation and inflammatory response during skeletal muscle regeneration. Physiol Rep 2023; 11:e15798. [PMID: 37798097 PMCID: PMC10555529 DOI: 10.14814/phy2.15798] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2023] [Revised: 08/02/2023] [Accepted: 08/02/2023] [Indexed: 10/07/2023] Open
Abstract
After injury, skeletal muscle regenerates thanks to the key role of satellite cells (SC). The regeneration process is supported and coordinated by other cell types among which immune cells. Among the mechanisms involved in skeletal muscle regeneration, a sexual dimorphism, involving sex hormones and more particularly estrogens, has been suggested. However, the role of sexual dimorphism on skeletal muscle regeneration is not fully understood, likely to the use of various experimental settings in both animals and human. This review aims at addressing how sex and estrogens regulate both the SC and the inflammatory response during skeletal muscle regeneration by considering the different experimental designs used in both animal models (i.e., ovarian hormone deficiency, estrogen replacement or supplementation, treatments with estrogen receptors agonists/antagonists and models knockout for estrogen receptors) and human (hormone therapy replacement, pre vs. postmenopausal, menstrual cycle variation…).
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Affiliation(s)
- Charline Jomard
- Institut NeuroMyoGène (INMG), Physiopathologie et Génétique du Neurone et du Muscle (PGNM), Université Claude Bernard LyonLyonFrance
| | - Julien Gondin
- Institut NeuroMyoGène (INMG), Physiopathologie et Génétique du Neurone et du Muscle (PGNM), Université Claude Bernard LyonLyonFrance
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Campbell MD, Djukovic D, Raftery D, Marcinek DJ. Age-related changes of skeletal muscle metabolic response to contraction are also sex-dependent. J Physiol 2023:10.1113/JP285124. [PMID: 37742081 PMCID: PMC10959763 DOI: 10.1113/jp285124] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2023] [Accepted: 09/08/2023] [Indexed: 09/25/2023] Open
Abstract
Mitochondria adapt to increased energy demands during muscle contraction by acutely altering metabolite fluxes and substrate oxidation. With age, an impaired mitochondrial metabolic response may contribute to reduced exercise tolerance and decreased skeletal muscle mass, specific force, increased overall fatty depositions in the skeletal muscle, frailty and depressed energy maintenance. We hypothesized that elevated energy stress in mitochondria with age alters the capacity of mitochondria to utilize different substrates following muscle contraction. To test this hypothesis, we used in vivo electrical stimulation to simulate high-intensity intervals (HII) or low intensity steady-state (LISS) exercise in young (5-7 months) and aged (27-29 months) male and female mice to characterize effects of age and sex on mitochondrial substrate utilization in skeletal muscle following contraction. Mitochondrial respiration using glutamate decreased in aged males following HII and glutamate oxidation was inhibited following HII in both the contracted and non-stimulated muscle of aged female muscle. Analyses of the muscle metabolome of female mice indicated that changes in metabolic pathways induced by HII and LISS contractions in young muscle are absent in aged muscle. To test improved mitochondrial function on substrate utilization following HII, we treated aged females with elamipretide (ELAM), a mitochondrially-targeted peptide shown to improve mitochondrial bioenergetics and restore redox status in aged muscle. ELAM removed inhibition of glutamate oxidation and showed increased metabolic pathway changes following HII, suggesting rescuing redox status and improving bioenergetic function in mitochondria from aged muscle increases glutamate utilization and enhances the metabolic response to muscle contraction in aged muscle. KEY POINTS: Acute local contraction of gastrocnemius can systemically alter mitochondrial respiration in non-stimulated muscle. Age-related changes in mitochondrial respiration using glutamate or palmitoyl carnitine following contraction are sex-dependent. Respiration using glutamate after high-intensity contraction is inhibited in aged female muscle. Metabolite level and pathway changes following muscle contraction decrease with age in female mice. Treatment with the mitochondrially-targeted peptide elamipretide can partially rescue metabolite response to muscle contraction.
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Affiliation(s)
| | - Danijel Djukovic
- Anesthesiology & Pain Medicine, University of Washington, Seattle, WA
| | - Daniel Raftery
- Anesthesiology & Pain Medicine, University of Washington, Seattle, WA
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Morris E, Abreu A, Scordilis SP. Effect of Tamoxifen on Proteome Expression during In Vitro Myogenesis in Murine Skeletal Muscle C 2C 12 Cells. J Proteome Res 2023; 22:3040-3053. [PMID: 37552804 PMCID: PMC10476267 DOI: 10.1021/acs.jproteome.3c00340] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2023] [Indexed: 08/10/2023]
Abstract
Tamoxifen (TMX), a selective estrogen receptor modulator, is commonly used in the treatment of hormone-responsive cancers. However, the effects of TMX in anabolic tissues harboring estrogen receptors, such as skeletal muscle, are poorly understood. We report a tandem mass-tag approach to TMX-treated myogenesis in C2C12 cells, a well-characterized model of in vitro murine skeletal muscle differentiation. A longitudinal analysis of >10,000 proteins identified in untreated C2C12 myogenesis revealed a novel subset of 1,062 myogenically regulated proteins. These proteins clustered into five distinct longitudinal expression trends which significantly overlap those obtained in similar analyses performed in human myocytes. We document a specific functional enrichment for adiponectin-signaling unique to TMX-treated myogenesis, as well as a subset of 198 proteins that are differentially expressed in TMX-treated cells relative to controls at one or more stages of myogenesis, the majority of which were involved in steroid and lipid metabolism. Further analysis highlights metallothionein-1 as a novel target of TMX treatment at each stage of C2C12 myogenesis. Finally, we present a powerful, self-validating pipeline for analyzing the total proteomic response to in vitro treatment across every stage of muscle cell development which can be easily adapted to study the effects of other drugs on myogenesis.
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Affiliation(s)
- Emily
A. Morris
- Department
of Microbiology and Immunology, Geisel School
of Medicine at Dartmouth, Borwell Building 644E, Lebanon, New Hampshire 03756, United States
| | - Ahlenne Abreu
- Department
of Cancer Biology, Perelman School of Medicine,
University of Pennsylvania Medical School, 421 Curie Blvd. Room 612 BRB II/III, Philadelphia, Pennsylvania 19104, United States
| | - Stylianos P. Scordilis
- Department
of Biological Sciences, Smith College, Ford Hall 202 B, Northampton, Massachusetts 01063, United States
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11
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Horii N, Miyamoto-Mikami E, Fujie S, Uchida M, Inoue K, Iemitsu K, Tabata I, Nakamura S, Tsubota J, Tsubota K, Iemitsu M. Effect of Exogenous Acute β-Hydroxybutyrate Administration on Different Modalities of Exercise Performance in Healthy Rats. Med Sci Sports Exerc 2023; 55:1184-1194. [PMID: 36893302 DOI: 10.1249/mss.0000000000003151] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/11/2023]
Abstract
PURPOSE A ketone body (β-hydroxybutyrate [β-HB]) is used as an energy source in the peripheral tissues. However, the effects of acute β-HB supplementation on different modalities of exercise performance remain unclear. This study aimed to assess the effects of acute β-HB administration on the exercise performance of rats. METHODS In study 1, Sprague-Dawley rats were randomly divided into six groups: endurance exercise (EE + PL and EE + KE), resistance exercise (RE + PL and RE + KE), and high-intensity intermittent exercise (HIIE + PL and HIIE + KE) with placebo (PL) or β-HB salt (KE) administration. In study 2, metabolome analysis using capillary electrophoresis mass spectrometry was performed to profile the effects of β-HB salt administration on HIIE-induced metabolic responses in the skeletal and heart muscles. RESULTS The maximal carrying capacity (rest for 3 min after each ladder climb, while carrying heavy weights until the rats could not climb) in the RE + KE group was higher than that in the RE + PL group. The maximum number of HIIE sessions (a 20-s swimming session with a 10-s rest between sessions, while bearing a weight equivalent to 16% of body weight) in the HIIE + KE group was higher than that in the HIIE + PL group. However, there was no significant difference in the time to exhaustion at 30 m·min -1 between the EE + PL and the EE + KE groups. Metabolome analysis showed that the overall tricarboxylic acid cycle and creatine phosphate levels in the skeletal muscle were higher in the HIIE + KE group than those in the HIIE + PL group. CONCLUSIONS These results indicate that acute β-HB salt administration may accelerate HIIE and RE performance, and the changes in metabolic responses in the skeletal muscle after β-HB salt administration may be involved in the enhancement of HIIE performance.
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Affiliation(s)
| | - Eri Miyamoto-Mikami
- Graduate School of Health and Sports Science, Juntendo University, Inzai, Chiba, JAPAN
| | - Shumpei Fujie
- Faculty of Sport and Health Science, Ritsumeikan University, Kusatsu, Shiga, JAPAN
| | - Masataka Uchida
- Faculty of Sport and Health Science, Ritsumeikan University, Kusatsu, Shiga, JAPAN
| | | | - Keiko Iemitsu
- Faculty of Sport and Health Science, Ritsumeikan University, Kusatsu, Shiga, JAPAN
| | - Izumi Tabata
- Faculty of Sport and Health Science, Ritsumeikan University, Kusatsu, Shiga, JAPAN
| | - Shigeru Nakamura
- Department of Ophthalmology, Keio University School of Medicine, Shinjuku-ku, Tokyo, JAPAN
| | - Jun Tsubota
- Energy Technology Laboratories, OSAKA GAS Co., Ltd., Konohana-ku, Osaka, JAPAN
| | | | - Motoyuki Iemitsu
- Faculty of Sport and Health Science, Ritsumeikan University, Kusatsu, Shiga, JAPAN
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12
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Pepe GJ, Albrecht ED. Microvascular Skeletal-Muscle Crosstalk in Health and Disease. Int J Mol Sci 2023; 24:10425. [PMID: 37445602 DOI: 10.3390/ijms241310425] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2023] [Revised: 06/13/2023] [Accepted: 06/14/2023] [Indexed: 07/15/2023] Open
Abstract
As an organ system, skeletal muscle is essential for the generation of energy that underpins muscle contraction, plays a critical role in controlling energy balance and insulin-dependent glucose homeostasis, as well as vascular well-being, and regenerates following injury. To achieve homeostasis, there is requirement for "cross-talk" between the myogenic and vascular components and their regulatory factors that comprise skeletal muscle. Accordingly, this review will describe the following: [a] the embryonic cell-signaling events important in establishing vascular and myogenic cell-lineage, the cross-talk between endothelial cells (EC) and myogenic precursors underpinning the development of muscle, its vasculature and the satellite-stem-cell (SC) pool, and the EC-SC cross-talk that maintains SC quiescence and localizes ECs to SCs and angio-myogenesis postnatally; [b] the vascular-myocyte cross-talk and the actions of insulin on vasodilation and capillary surface area important for the uptake of glucose/insulin by myofibers and vascular homeostasis, the microvascular-myocyte dysfunction that characterizes the development of insulin resistance, diabetes and hypertension, and the actions of estrogen on muscle vasodilation and growth in adults; [c] the role of estrogen in utero on the development of fetal skeletal-muscle microvascularization and myofiber hypertrophy required for metabolic/vascular homeostasis after birth; [d] the EC-SC interactions that underpin myofiber vascular regeneration post-injury; and [e] the role of the skeletal-muscle vasculature in Duchenne muscular dystrophy.
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Affiliation(s)
- Gerald J Pepe
- Department of Physiological Sciences, Eastern Virginia Medical School, Norfolk, VA 23501, USA
| | - Eugene D Albrecht
- Department of Obstetrics, Gynecology and Reproductive Sciences, University of Maryland School of Medicine, Baltimore, MD 21201, USA
- Department of Physiology, University of Maryland School of Medicine, Baltimore, MD 21201, USA
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13
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Sheptulina AF, Antyukh KY, Kiselev AR, Mitkovskaya NP, Drapkina OM. Possible Mechanisms Linking Obesity, Steroidogenesis, and Skeletal Muscle Dysfunction. Life (Basel) 2023; 13:1415. [PMID: 37374197 DOI: 10.3390/life13061415] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2023] [Revised: 06/12/2023] [Accepted: 06/16/2023] [Indexed: 06/29/2023] Open
Abstract
Increasing evidence suggests that skeletal muscles may play a role in the pathogenesis of obesity and associated conditions due to their impact on insulin resistance and systemic inflammation. Skeletal muscles, as well as adipose tissue, are largely recognized as endocrine organs, producing biologically active substances, such as myokines and adipokines. They may have either beneficial or harmful effects on the organism and its functions, acting through the endocrine, paracrine, and autocrine pathways. Moreover, the collocation of adipose tissue and skeletal muscles, i.e., the amount of intramuscular, intermuscular, and visceral adipose depots, may be of major importance for metabolic health. Traditionally, the generalized and progressive loss of skeletal muscle mass and strength or physical function, named sarcopenia, has been thought to be associated with age. That is why most recently published papers are focused on the investigation of the effect of obesity on skeletal muscle function in older adults. However, accumulated data indicate that sarcopenia may arise in individuals with obesity at any age, so it seems important to clarify the possible mechanisms linking obesity and skeletal muscle dysfunction regardless of age. Since steroids, namely, glucocorticoids (GCs) and sex steroids, have a major impact on the amount and function of both adipose tissue and skeletal muscles, and are involved in the pathogenesis of obesity, in this review, we will also discuss the role of steroids in the interaction of these two metabolically active tissues in the course of obesity.
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Affiliation(s)
- Anna F Sheptulina
- Department of Fundamental and Applied Aspects of Obesity, National Medical Research Center for Therapy and Preventive Medicine, 101990 Moscow, Russia
- Department of Therapy and Preventive Medicine, A.I. Evdokimov Moscow State University of Medicine and Dentistry, 127473 Moscow, Russia
| | - Karina Yu Antyukh
- Republican Scientific and Practical Center of Cardiology, 220036 Minsk, Belarus
| | - Anton R Kiselev
- National Medical Research Center for Therapy and Preventive Medicine, 101990 Moscow, Russia
| | - Natalia P Mitkovskaya
- Republican Scientific and Practical Center of Cardiology, 220036 Minsk, Belarus
- Department of Cardiology and Internal Diseases, Belarusian State Medical University, 220116 Minsk, Belarus
| | - Oxana M Drapkina
- Department of Fundamental and Applied Aspects of Obesity, National Medical Research Center for Therapy and Preventive Medicine, 101990 Moscow, Russia
- Department of Therapy and Preventive Medicine, A.I. Evdokimov Moscow State University of Medicine and Dentistry, 127473 Moscow, Russia
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14
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Liu S, Liu Z, Wang P, Li W, Zhao S, Liu Y, Chu M. Estrogen-mediated oar-miR-485-5p targets PPP1R13B to regulate myoblast proliferation in sheep. Int J Biol Macromol 2023; 236:123987. [PMID: 36906210 DOI: 10.1016/j.ijbiomac.2023.123987] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2022] [Revised: 02/03/2023] [Accepted: 02/19/2023] [Indexed: 03/11/2023]
Abstract
Ovaries are important endocrine organs in female animals that secrete various steroid hormones, which are involved in multiple physiological functions. Estrogen, one of the hormones secreted by ovaries, is essential for the overall maintenance of muscle growth and development. However, the molecular mechanisms that affect muscle growth and development in sheep following ovariectomy remain unclear. In this study, we identified 1662 differentially expressed mRNAs (DEGs) and 40 differentially expressed miRNAs (DEMs) in sheep that underwent ovariectomy compared with those that underwent sham surgery. A total of 178 DEG-DEM pairs were negatively correlated. GO and KEGG analysis showed that PPP1R13B was involved in the PI3K-Akt signaling pathway, which was essential for muscle development. Using in vitro experiments, we examined the effect of PPP1R13B on myoblast proliferation and found that overexpression or inhibition of PPP1R13B increased or decreased the expression of myoblast proliferation markers, respectively. PPP1R13B was identified as a functional downstream target of miR-485-5p. Our results suggested that miR-485-5p promoted myoblast proliferation by regulating proliferation factors in myoblasts by targeting PPP1R13B. Notably, exogenous estradiol supplementation to myoblasts regulated the expression of oar-miR-485-5p and PPP1R13B and promoted myoblast proliferation. These results provided new insights into the molecular mechanism by which ovaries influence muscle growth and development in sheep.
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Affiliation(s)
- Siqi Liu
- Key Laboratory of Animal Genetics, Breeding and Reproduction of Ministry of Agriculture and Rural Affairs, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, China; College of Animal Science and Technology, Gansu Agricultural University, Lanzhou 730070, China
| | - Ziyi Liu
- Key Laboratory of Animal Genetics, Breeding and Reproduction of Ministry of Agriculture and Rural Affairs, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Peng Wang
- Key Laboratory of Animal Genetics, Breeding and Reproduction of Ministry of Agriculture and Rural Affairs, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Wentao Li
- Key Laboratory of Animal Genetics, Breeding and Reproduction of Ministry of Agriculture and Rural Affairs, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Shengguo Zhao
- College of Animal Science and Technology, Gansu Agricultural University, Lanzhou 730070, China
| | - Yufang Liu
- Key Laboratory of Animal Genetics, Breeding and Reproduction of Ministry of Agriculture and Rural Affairs, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, China.
| | - Mingxing Chu
- Key Laboratory of Animal Genetics, Breeding and Reproduction of Ministry of Agriculture and Rural Affairs, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, China.
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15
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Claus C, Slavin M, Ansseau E, Lancelot C, Bah K, Lassche S, Fiévet M, Greco A, Tomaiuolo S, Tassin A, Dudome V, Kusters B, Declèves AE, Laoudj-Chenivesse D, van Engelen BGM, Nonclercq D, Belayew A, Kalisman N, Coppée F. The double homeodomain protein DUX4c is associated with regenerating muscle fibers and RNA-binding proteins. Skelet Muscle 2023; 13:5. [PMID: 36882853 PMCID: PMC9990282 DOI: 10.1186/s13395-022-00310-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2021] [Accepted: 11/30/2022] [Indexed: 03/09/2023] Open
Abstract
BACKGROUND We have previously demonstrated that double homeobox 4 centromeric (DUX4C) encoded for a functional DUX4c protein upregulated in dystrophic skeletal muscles. Based on gain- and loss-of-function studies we have proposed DUX4c involvement in muscle regeneration. Here, we provide further evidence for such a role in skeletal muscles from patients affected with facioscapulohumeral muscular dystrophy (FSHD). METHODS DUX4c was studied at RNA and protein levels in FSHD muscle cell cultures and biopsies. Its protein partners were co-purified and identified by mass spectrometry. Endogenous DUX4c was detected in FSHD muscle sections with either its partners or regeneration markers using co-immunofluorescence or in situ proximity ligation assay. RESULTS We identified new alternatively spliced DUX4C transcripts and confirmed DUX4c immunodetection in rare FSHD muscle cells in primary culture. DUX4c was detected in nuclei, cytoplasm or at cell-cell contacts between myocytes and interacted sporadically with specific RNA-binding proteins involved, a.o., in muscle differentiation, repair, and mass maintenance. In FSHD muscle sections, DUX4c was found in fibers with unusual shape or central/delocalized nuclei (a regeneration feature) staining for developmental myosin heavy chain, MYOD or presenting intense desmin labeling. Some couples of myocytes/fibers locally exhibited peripheral DUX4c-positive areas that were very close to each other, but in distinct cells. MYOD or intense desmin staining at these locations suggested an imminent muscle cell fusion. We further demonstrated DUX4c interaction with its major protein partner, C1qBP, inside myocytes/myofibers that presented features of regeneration. On adjacent muscle sections, we could unexpectedly detect DUX4 (the FSHD causal protein) and its interaction with C1qBP in fusing myocytes/fibers. CONCLUSIONS DUX4c upregulation in FSHD muscles suggests it contributes not only to the pathology but also, based on its protein partners and specific markers, to attempts at muscle regeneration. The presence of both DUX4 and DUX4c in regenerating FSHD muscle cells suggests DUX4 could compete with normal DUX4c functions, thus explaining why skeletal muscle is particularly sensitive to DUX4 toxicity. Caution should be exerted with therapeutic agents aiming for DUX4 suppression because they might also repress the highly similar DUX4c and interfere with its physiological role.
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Affiliation(s)
- Clothilde Claus
- Laboratory of Metabolic and Molecular Biochemistry, Research Institute for Health Sciences and Technology, University of Mons, 6, Avenue du Champs de Mars, B-7000, Mons, Belgium
| | - Moriya Slavin
- Department of Biological Chemistry, the Alexander Silberman Institute of Life Sciences, Hebrew University of Jerusalem, Jerusalem, Israel
| | - Eugénie Ansseau
- Laboratory of Metabolic and Molecular Biochemistry, Research Institute for Health Sciences and Technology, University of Mons, 6, Avenue du Champs de Mars, B-7000, Mons, Belgium
| | - Céline Lancelot
- Laboratory of Metabolic and Molecular Biochemistry, Research Institute for Health Sciences and Technology, University of Mons, 6, Avenue du Champs de Mars, B-7000, Mons, Belgium
| | - Karimatou Bah
- Laboratory of Metabolic and Molecular Biochemistry, Research Institute for Health Sciences and Technology, University of Mons, 6, Avenue du Champs de Mars, B-7000, Mons, Belgium
| | - Saskia Lassche
- Department of Neurology, Donders Institute for Brain, Cognition and Behaviour, Radboud University Medical Center, 6525 GA, Nijmegen, The Netherlands.,Department of Neurology, Zuyderland Medical Center, Heerlen, the Netherlands
| | - Manon Fiévet
- Laboratory of Metabolic and Molecular Biochemistry, Research Institute for Health Sciences and Technology, University of Mons, 6, Avenue du Champs de Mars, B-7000, Mons, Belgium
| | - Anna Greco
- Department of Neurology, Donders Institute for Brain, Cognition and Behaviour, Radboud University Medical Center, 6525 GA, Nijmegen, The Netherlands
| | - Sara Tomaiuolo
- Laboratory of Metabolic and Molecular Biochemistry, Research Institute for Health Sciences and Technology, University of Mons, 6, Avenue du Champs de Mars, B-7000, Mons, Belgium
| | - Alexandra Tassin
- Laboratory of Metabolic and Molecular Biochemistry, Research Institute for Health Sciences and Technology, University of Mons, 6, Avenue du Champs de Mars, B-7000, Mons, Belgium.,Laboratory of Respiratory Physiology and Rehabilitation, Research Institute for Health Sciences and Technology, University of Mons, 6, Avenue du Champs de Mars, B-7000, Mons, Belgium
| | - Virginie Dudome
- Laboratory of Metabolic and Molecular Biochemistry, Research Institute for Health Sciences and Technology, University of Mons, 6, Avenue du Champs de Mars, B-7000, Mons, Belgium
| | - Benno Kusters
- Department of Pathology, Donders Institute for Brain, Cognition and Behaviour, Radboud University Medical Center, 6525 GA, Nijmegen, The Netherlands
| | - Anne-Emilie Declèves
- Laboratory of Metabolic and Molecular Biochemistry, Research Institute for Health Sciences and Technology, University of Mons, 6, Avenue du Champs de Mars, B-7000, Mons, Belgium
| | | | - Baziel G M van Engelen
- Department of Neurology, Donders Institute for Brain, Cognition and Behaviour, Radboud University Medical Center, 6525 GA, Nijmegen, The Netherlands
| | - Denis Nonclercq
- Laboratory of Histology, Research Institute for Health Sciences and Technology, University of Mons, 6, Avenue du Champs de Mars, B-7000, Mons, Belgium
| | - Alexandra Belayew
- Laboratory of Metabolic and Molecular Biochemistry, Research Institute for Health Sciences and Technology, University of Mons, 6, Avenue du Champs de Mars, B-7000, Mons, Belgium
| | - Nir Kalisman
- Department of Biological Chemistry, the Alexander Silberman Institute of Life Sciences, Hebrew University of Jerusalem, Jerusalem, Israel
| | - Frédérique Coppée
- Laboratory of Metabolic and Molecular Biochemistry, Research Institute for Health Sciences and Technology, University of Mons, 6, Avenue du Champs de Mars, B-7000, Mons, Belgium.
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16
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Le G, Baumann CW, Warren GL, Lowe DA. In vivo potentiation of muscle torque is enhanced in female mice through estradiol-estrogen receptor signaling. J Appl Physiol (1985) 2023; 134:722-730. [PMID: 36735234 PMCID: PMC10027088 DOI: 10.1152/japplphysiol.00731.2022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2022] [Revised: 01/13/2023] [Accepted: 02/02/2023] [Indexed: 02/04/2023] Open
Abstract
Estradiol affects several properties of skeletal muscle in females including strength. Here, we developed an approach to measure in vivo posttetanic twitch potentiation (PTP) of the anterior crural muscles of anesthetized mice and tested the hypothesis that 17β-estradiol (E2) enhances PTP through estrogen receptor (ER) signaling. Peak torques of potentiated twitches were ∼40%-60% greater than those of unpotentiated twitches and such PTP was greater in ovary-intact mice, or ovariectomized (Ovx) mice treated with E2, compared with Ovx mice (P ≤ 0.047). PTP did not differ between mice with and without ERα ablated in skeletal muscle fibers (P = 0.347). Treatment of ovary-intact and Ovx mice with ERβ antagonist and agonist (PHTPP and DPN, respectively) did not affect PTP (P ≥ 0.258). Treatment with G1, an agonist of the G protein-coupled estrogen receptor (GPER), significantly increased PTP in Ovx mice from 41 ± 10% to 66 ± 21% (means ± SD; P = 0.034). Collectively, these data indicate that E2 signals through GPER, and not ERα or ERβ, in skeletal muscles of female mice to augment an in vivo parameter of strength, namely, PTP.NEW & NOTEWORTHY A novel in vivo approach was developed to measure potentiation of skeletal muscle torque in female mice and highlight another parameter of strength that is impacted by estradiol. The enhancement of PTP by estradiol is mediated distinctively through the G-protein estrogen receptor, GPER.
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Affiliation(s)
- Gengyun Le
- Division of Rehabilitation Science and Physical Therapy, Department of Rehabilitation Medicine, University of Minnesota Medical School, Minneapolis, Minnesota, United States
| | - Cory W Baumann
- Division of Rehabilitation Science and Physical Therapy, Department of Rehabilitation Medicine, University of Minnesota Medical School, Minneapolis, Minnesota, United States
| | - Gordon L Warren
- Department of Physical Therapy, Georgia State University, Atlanta, Georgia, United States
| | - Dawn A Lowe
- Division of Rehabilitation Science and Physical Therapy, Department of Rehabilitation Medicine, University of Minnesota Medical School, Minneapolis, Minnesota, United States
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17
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Mitoma T, Maki J, Ooba H, Eto E, Takahashi K, Kondo T, Ikeda T, Sakamoto Y, Mitsuhashi T, Masuyama H. Protocol for a randomised, placebo-controlled, double-blinded clinical trial on the effect of oestrogen replacement on physical performance to muscle resistance exercise for older women with osteoarthritis of knee joint: the EPOK trial. BMC Geriatr 2023; 23:104. [PMID: 36800940 PMCID: PMC9938988 DOI: 10.1186/s12877-023-03828-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2022] [Accepted: 02/15/2023] [Indexed: 02/20/2023] Open
Abstract
BACKGROUND Knee osteoarthritis (KOA) is highly prevalent in older women, and previous studies suggest the involvement of hormonal factors play a role in the pathogenesis of osteoarthritis. KOA causes musculoskeletal impairment, resulting in decreased physical activity, muscle mass, and strength, which leads to sarcopenia and further increases the burden on healthcare systems. Oestrogen replacement therapy (ERT) improves joint pain and muscle performance in early menopausal women. Muscle resistance exercise (MRE) is a non-pharmacological method that preserves the physical functions of patients with KOA. However, data on short-term oestrogen administration combined with MRE in postmenopausal women, especially in those aged > 65 years, are limited. Therefore, this study presents a protocol of a trial aimed to examine the synergistic effect of ERT and MRE on lower-limb physical performance in older women with KOA. METHODS We will conduct a double-blinded, randomised placebo-controlled trial in 80 Japanese women aged > 65 years living independently with knee pain. The participants will be randomly categorised into two groups: (1) 12-week MRE programme with transdermal oestrogen gel containing 0.54 mg oestradiol per push and (2) 12-week MRE programme with placebo gel. The primary outcome measured using the 30-s chair stand test, and secondary outcomes (body composition, lower-limb muscle strength, physical performance, self-reported measure of knee pain, and quality of life) will be measured at baseline, 3 months, and 12 months, and these outcomes will be analysed based on the intention-to-treat. DISCUSSION The EPOK trial is the first study to focus on the efficacy of ERT on MRE among women aged > 65 years with KOA. This trial will provide an effective MRE to prevent KOA-induced lower-limb muscle weakness, confirming the benefit of short-term oestrogen administration. TRIAL REGISTRATION Japan Registry of Clinical Trials: jRCTs061210062. Registered 17th December 2021, https://jrct.niph.go.jp/en-latest-detail/jRCTs061210062 .
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Affiliation(s)
- Tomohiro Mitoma
- grid.261356.50000 0001 1302 4472Department of Obstetrics and Gynecology, Graduate School of Medicine Dentistry and Pharmaceutical Sciences, Okayama University, Okayama, Japan
| | - Jota Maki
- grid.261356.50000 0001 1302 4472Department of Obstetrics and Gynecology, Graduate School of Medicine Dentistry and Pharmaceutical Sciences, Okayama University, Okayama, Japan
| | - Hikaru Ooba
- grid.261356.50000 0001 1302 4472Department of Obstetrics and Gynecology, Graduate School of Medicine Dentistry and Pharmaceutical Sciences, Okayama University, Okayama, Japan
| | - Eriko Eto
- grid.261356.50000 0001 1302 4472Department of Obstetrics and Gynecology, Graduate School of Medicine Dentistry and Pharmaceutical Sciences, Okayama University, Okayama, Japan
| | - Kasumi Takahashi
- Department of Obstetrics and Gynecology, Ochiai Hospital, Okayama, Japan
| | - Tsunemasa Kondo
- Department of Obstetrics and Gynecology, Ochiai Hospital, Okayama, Japan
| | - Tomohiro Ikeda
- grid.261356.50000 0001 1302 4472Department of Rehabilitation Medicine, Okayama University, Okayama, Japan
| | - Yoko Sakamoto
- grid.261356.50000 0001 1302 4472Center for Innovative Clinical Medicine, Okayama University, Okayama, Japan
| | - Toshiharu Mitsuhashi
- grid.261356.50000 0001 1302 4472Center for Innovative Clinical Medicine, Okayama University, Okayama, Japan
| | - Hisashi Masuyama
- Department of Obstetrics and Gynecology, Graduate School of Medicine Dentistry and Pharmaceutical Sciences, Okayama University, Okayama, Japan.
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18
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Roles of Estrogen, Estrogen Receptors, and Estrogen-Related Receptors in Skeletal Muscle: Regulation of Mitochondrial Function. Int J Mol Sci 2023; 24:ijms24031853. [PMID: 36768177 PMCID: PMC9916347 DOI: 10.3390/ijms24031853] [Citation(s) in RCA: 23] [Impact Index Per Article: 23.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2022] [Revised: 01/13/2023] [Accepted: 01/14/2023] [Indexed: 01/19/2023] Open
Abstract
Estrogen is an essential sex steroid hormone that functions primarily in female reproductive system, as well as in a variety of tissues and organs with pleiotropic effects, such as in cardiovascular, nervous, immune, and musculoskeletal systems. Women with low estrogen, as exemplified by those in postmenopause, are therefore prone to suffer from various disorders, i.e., cardiovascular disease, dementia, metabolic syndrome, osteoporosis, sarcopenia, frailty, and so on. Estrogen regulates the expression of its target genes by binding to its cognate receptors, estrogen receptors (ERs) α and β. Notably, the estrogen-related receptors (ERRs) α, β, and γ are originally identified as orphan receptors that share substantial structural homology and common transcriptional targets with ERs. Accumulating evidence suggests that ERs and ERRs play crucial roles in skeletal muscles, such as muscle mass maintenance, muscle exercise physiology, and muscle regeneration. In this article, we review potential regulatory roles of ERs and ERRs in muscle physiology, particularly with regard to mitochondrial function and metabolism.
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19
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Marsh ML, Oliveira MN, Vieira-Potter VJ. Adipocyte Metabolism and Health after the Menopause: The Role of Exercise. Nutrients 2023; 15:444. [PMID: 36678314 PMCID: PMC9862030 DOI: 10.3390/nu15020444] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2022] [Revised: 01/09/2023] [Accepted: 01/10/2023] [Indexed: 01/19/2023] Open
Abstract
Postmenopausal women represent an important target population in need of preventative cardiometabolic approaches. The loss of estrogen following the menopause eliminates protections against metabolic dysfunction, largely due to its role in the health and function of adipose tissue. In addition, some studies associate the menopause with reduced physical activity, which could potentially exacerbate the deleterious cardiometabolic risk profile accompanying the menopause. Meanwhile, exercise has adipocyte-specific effects that may alleviate the adverse impact of estrogen loss through the menopausal transition period and beyond. Exercise thus remains the best therapeutic agent available to mitigate menopause-associated metabolic dysfunction and represents a vital behavioral strategy to prevent and alleviate health decline in this population.
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20
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Yan Q, Fei Z, Li M, Zhou J, Du G, Guan X. Naringenin Promotes Myotube Formation and Maturation for Cultured Meat Production. Foods 2022; 11:foods11233755. [PMID: 36496566 PMCID: PMC9738036 DOI: 10.3390/foods11233755] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2022] [Revised: 11/18/2022] [Accepted: 11/21/2022] [Indexed: 11/23/2022] Open
Abstract
Cultured meat is an emerging technology for manufacturing meat through cell culture rather than animal rearing. Under most existing culture systems, the content and maturity of in vitro generated myotubes are insufficient, limiting the application and public acceptance of cultured meat. Here we demonstrated that a natural compound, naringenin (NAR), promoted myogenic differentiation of porcine satellite cells (PSCs) in vitro and increased the content and maturity of generated myotubes, especially for PSCs that had undergone extensive expansion. Mechanistically, NAR upregulated the IGF-1/AKT/mTOR anabolic pathway during the myogenesis of PSCs by activating the estrogen receptor β. Moreover, PSCs were mixed with hydrogels and cultured in a mold with parallel micro-channels to manufacture cultured pork samples. More mature myosin was detected, and obvious sarcomere was observed when the differentiation medium was supplemented with NAR. Taken together, these findings suggested that NAR induced the differentiation of PSCs and generation of mature myotubes through upregulation of the IGF-1 signaling, contributing to the development of efficient and innovative cultured meat production systems.
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Affiliation(s)
- Qiyang Yan
- Key Laboratory of Industrial Biotechnology, Ministry of Education, Jiangnan University, Wuxi 214122, China
- Science Center for Future Foods, Jiangnan University, Wuxi 214122, China
| | - Zhuocheng Fei
- Key Laboratory of Industrial Biotechnology, Ministry of Education, Jiangnan University, Wuxi 214122, China
- Science Center for Future Foods, Jiangnan University, Wuxi 214122, China
| | - Mei Li
- Key Laboratory of Industrial Biotechnology, Ministry of Education, Jiangnan University, Wuxi 214122, China
- Science Center for Future Foods, Jiangnan University, Wuxi 214122, China
| | - Jingwen Zhou
- Key Laboratory of Industrial Biotechnology, Ministry of Education, Jiangnan University, Wuxi 214122, China
- Science Center for Future Foods, Jiangnan University, Wuxi 214122, China
- Engineering Research Center of Ministry of Education on Food Synthetic Biotechnology, Jiangnan University, Wuxi 214122, China
| | - Guocheng Du
- Key Laboratory of Industrial Biotechnology, Ministry of Education, Jiangnan University, Wuxi 214122, China
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, Jiangnan University, Wuxi 214122, China
- Correspondence: (G.D.); (X.G.)
| | - Xin Guan
- Science Center for Future Foods, Jiangnan University, Wuxi 214122, China
- Engineering Research Center of Ministry of Education on Food Synthetic Biotechnology, Jiangnan University, Wuxi 214122, China
- Correspondence: (G.D.); (X.G.)
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21
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Thapa S, Nandy A, Rendina-Ruedy E. Endocrinal metabolic regulation on the skeletal system in post-menopausal women. Front Physiol 2022; 13:1052429. [PMID: 36439254 PMCID: PMC9691779 DOI: 10.3389/fphys.2022.1052429] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2022] [Accepted: 10/27/2022] [Indexed: 08/13/2023] Open
Abstract
Osteoporosis is a common endocrinologic disorder characterized as a chronic bone loss condition. Sexual dimorphism is ubiquitous in the incidence of osteoporosis with post-menopausal women being acutely affected. Gonadal sex hormones including estrogen act as crucial regulators of bone mass; therefore, loss of such hormones leads to an imbalance in skeletal turnover leading to osteoporosis. Estrogen can influence both bone formation as well as resorption by reducing osteoblast activity and enhancing osteoclastogenesis. Additionally, estrogen is a potent regulator of systemic metabolism. Recent studies have provided clues that estrogenic effect on bone might also involve alterations in bone cell metabolism and bioenergetic potential. While direct effects of gonadal hormones ability to alter intracellular metabolism of bone cells has not been studied, there is precedence within the literature that this is occurring and contributing to post-menopausal bone loss. This review aims to serve as a perspective piece detailing the prospective role of gonadal hormones regulating bone cell metabolic potential.
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Affiliation(s)
- Santosh Thapa
- Department of Medicine, Division of Clinical Pharmacology, Vanderbilt University Medical Center, Nashville, TN, United States
| | - Ananya Nandy
- Department of Medicine, Division of Clinical Pharmacology, Vanderbilt University Medical Center, Nashville, TN, United States
| | - Elizabeth Rendina-Ruedy
- Department of Medicine, Division of Clinical Pharmacology, Vanderbilt University Medical Center, Nashville, TN, United States
- Molecular Physiology and Biophysics, Vanderbilt University, Nashville, TN, United States
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22
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高山 賢. [Recent advances in the sex steroid hormone action involved in the development of dementia and frailty]. Nihon Ronen Igakkai Zasshi 2022; 59:430-445. [PMID: 36476689 DOI: 10.3143/geriatrics.59.430] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- 賢一 高山
- 東京都健康長寿医療センター研究所老化機構研究チームシステム加齢医学
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23
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Kim SO, Albrecht ED, Pepe GJ. Estrogen promotes fetal skeletal muscle myofiber development important for insulin sensitivity in offspring. Endocrine 2022; 78:32-41. [PMID: 35715687 PMCID: PMC9474690 DOI: 10.1007/s12020-022-03108-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/06/2021] [Accepted: 06/03/2022] [Indexed: 11/03/2022]
Abstract
Using our nonhuman primate baboon model, we showed that offspring born to mothers deprived of estrogen during the second half of gestation exhibited insulin resistance and a deficit in first phase insulin release. Although insulin resistance was not due to an impairment of fetal or offspring growth, nor to an alteration in adipose or hepatic sensitivity to insulin, skeletal muscle microvacularization critical for delivery of nutrients/insulin was significantly reduced in fetuses and offspring deprived of estrogen in utero. Skeletal muscle myofiber maturation occurs in utero and estrogen modulates myofiber growth in adults. Therefore, the current study determined whether fetal skeletal muscle development was altered in baboons in which estradiol levels were suppressed/restored during the second half of gestation by maternal treatment with letrozole ± estradiol benzoate. In estrogen-suppressed animals, fetal skeletal muscle fascicles were structurally less organized, smaller, and comprised of slow type I and fast type II fibers, the size, but not the number of which were smaller than in untreated baboons. Moreover, the proportion of non-muscle fiber tissue was greater and that of muscle fibers lower in estrogen-deprived fetuses. Thus, the maintenance of fetal body weight in estrogen-deprived animals was maintained at the expense of muscle fibers and likely reflected increased deposition of non-muscle proteins. Importantly, fetal skeletal muscle development, including fascicle organization, myofiber size and composition was normal in baboons treated with letrozole and estradiol benzoate. Collectively, these and our previous findings support our proposal that exposure of the fetus to estrogen is important for fetal skeletal muscle development and glucose homeostasis in adulthood.
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Affiliation(s)
- Soon Ok Kim
- Department of Physiological Sciences, Eastern Virginia Medical School, Norfolk, VA, USA
| | - Eugene D Albrecht
- Departments of Obstetrics/Gynecology/Reproductive Sciences and Physiology, University of Maryland School of Medicine, Baltimore, MD, USA
| | - Gerald J Pepe
- Department of Physiological Sciences, Eastern Virginia Medical School, Norfolk, VA, USA.
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24
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Thomas NT, Confides AL, Fry CS, Dupont-Versteegden EE. Satellite cell depletion does not affect diaphragm adaptations to hypoxia. J Appl Physiol (1985) 2022; 133:637-646. [PMID: 35861521 PMCID: PMC9448290 DOI: 10.1152/japplphysiol.00083.2022] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2022] [Revised: 07/01/2022] [Accepted: 07/13/2022] [Indexed: 01/25/2023] Open
Abstract
The diaphragm is the main skeletal muscle responsible for inspiration and is susceptible to age-associated decline in function and morphology. Satellite cells in diaphragm fuse into unperturbed muscle fibers throughout life, yet their role in adaptations to hypoxia in diaphragm is unknown. Given their continual fusion, we hypothesize that satellite cell depletion will negatively impact adaptations to hypoxia in the diaphragm, particularly with aging. We used the Pax7CreER/CreER:R26RDTA/DTA genetic mouse model of inducible satellite cell depletion to investigate diaphragm responses to hypoxia in adult (6 mo) and aged (22 mo) male mice. The mice were subjected to normobaric hypoxia at 10% [Formula: see text] or normoxia for 4 wk. We showed that satellite cell depletion had no effect on diaphragm muscle fiber cross-sectional area, fiber-type distribution, myonuclear density, or regulation of extracellular matrix in either adult or aged mice. Furthermore, we showed lower muscle fiber cross-sectional area with hypoxia and age (main effects), while extracellular matrix content was higher and satellite cell abundance was lower with age (main effect) in diaphragm. Lastly, a greater number of Pax3-mRNA+ cells was observed in diaphragm muscle of satellite cell-depleted mice independent of hypoxia (main effect), potentially as a compensatory mechanism for the loss of satellite cells. We conclude that satellite cells are not required for diaphragm muscle adaptations to hypoxia in either adult or aged mice.NEW & NOTEWORTHY Satellite cells show consistent fusion into diaphragm muscle fibers throughout life, suggesting a critical role in maintaining homeostasis. Here, we report identical diaphragm adaptations to hypoxia with and without satellite cells in adult and aged mice. In addition, we propose that the higher number of Pax3-positive cells in satellite cell-depleted diaphragm muscle acts as a compensatory mechanism.
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Affiliation(s)
- Nicholas T Thomas
- Center for Muscle Biology, University of Kentucky, Lexington, Kentucky
- Department of Athletic Training and Clinical Nutrition, University of Kentucky, Lexington, Kentucky
| | - Amy L Confides
- Center for Muscle Biology, University of Kentucky, Lexington, Kentucky
- Department of Physical Therapy, University of Kentucky, Lexington, Kentucky
| | - Christopher S Fry
- Center for Muscle Biology, University of Kentucky, Lexington, Kentucky
- Department of Athletic Training and Clinical Nutrition, University of Kentucky, Lexington, Kentucky
| | - Esther E Dupont-Versteegden
- Center for Muscle Biology, University of Kentucky, Lexington, Kentucky
- Department of Physical Therapy, University of Kentucky, Lexington, Kentucky
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25
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Knewtson KE, Ohl NR, Robinson JL. Estrogen Signaling Dictates Musculoskeletal Stem Cell Behavior: Sex Differences in Tissue Repair. TISSUE ENGINEERING. PART B, REVIEWS 2022; 28:789-812. [PMID: 34409868 PMCID: PMC9419932 DOI: 10.1089/ten.teb.2021.0094] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Sexual dimorphisms in humans and other species exist in visually evident features such as body size and less apparent characteristics, including disease prevalence. Current research is adding to a growing understanding of sex differences in stem cell function and response to external stimuli, including sex hormones such as estrogens. These differences are proving significant and directly impact both the understanding of stem cell processes in tissue repair and the clinical implementation of stem cell therapies. Adult stem cells of the musculoskeletal system, including those used for development and repair of muscle, bone, cartilage, fibrocartilage, ligaments, and tendons, are no exception. Both in vitro and in vivo studies have found differences in stem cell number, proliferative and differentiation capabilities, and response to estrogen treatment between males and females of many species. Maintaining the stemness and reducing senescence of adult stem cells is an important topic with implications in regenerative therapy and aging. As such, this review discusses the effect of estrogens on musculoskeletal system stem cell response in multiple species and highlights the research gaps that still need to be addressed. The following evidence from investigations of sex-related phenotypes in adult progenitor and stem cells are pieces to the big puzzle of sex-related effects on aging and disease and critical information for both fundamental tissue repair and regeneration studies and safe and effective clinical use of stem cells. Impact Statement This review summarizes current knowledge of sex differences in and the effects of estrogen treatment on musculoskeletal stem cells in the context of tissue engineering. Specifically, it highlights the impact of sex on musculoskeletal stem cell function and ability to regenerate tissue. Furthermore, it discusses the varying effects of estrogen on stem cell properties, including proliferation and differentiation, important to tissue engineering. This review aims to highlight the potential impact of estrogens and the importance of performing sex comparative studies in the field of tissue engineering.
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Affiliation(s)
- Kelsey E. Knewtson
- Department of Chemical and Petroleum Engineering, University of Kansas, Lawrence, Kansas, USA
| | - Nathan R. Ohl
- Department of Chemical and Petroleum Engineering, University of Kansas, Lawrence, Kansas, USA
| | - Jennifer L. Robinson
- Department of Chemical and Petroleum Engineering, University of Kansas, Lawrence, Kansas, USA
- Bioengineering Graduate Program, University of Kansas, Lawrence, Kansas, USA
- Address correspondence to: Jennifer L. Robinson, PhD, Department of Chemical and Petroleum Engineering, The University of Kansas, 1530 West 15th Street Room 4132, Lawrence, KS 66045, USA
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26
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Mechanisms of Estrogen Influence on Skeletal Muscle: Mass, Regeneration, and Mitochondrial Function. Sports Med 2022; 52:2853-2869. [PMID: 35907119 DOI: 10.1007/s40279-022-01733-9] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/24/2022] [Indexed: 10/16/2022]
Abstract
Human menopause is widely associated with impaired skeletal muscle quality and significant metabolic dysfunction. These observations pose significant challenges to the quality of life and mobility of the aging population, and are of relevance when considering the significantly greater losses in muscle mass and force-generating capacity of muscle from post-menopausal females relative to age-matched males. In this regard, the influence of estrogen on skeletal muscle has become evident across human, animal, and cell-based studies. Beneficial effects of estrogen have become apparent in mitigation of muscle injury and enhanced post-damage repair via various mechanisms, including prophylactic effects on muscle satellite cell number and function, as well as membrane stability and potential antioxidant influences following injury, exercise, and/or mitochondrial stress. In addition to estrogen replacement in otherwise deficient states, exercise has been found to serve as a means of augmenting and/or mimicking the effects of estrogen on skeletal muscle function in recent literature. Detailed mechanisms behind the estrogenic effect on muscle mass, strength, as well as the injury response are beginning to be elucidated and point to estrogen-mediated molecular cross talk amongst signalling pathways, such as apoptotic signaling, contractile protein modifications, including myosin regulatory light chain phosphorylation, and the maintenance of muscle satellite cells. This review discusses current understandings and highlights new insights regarding the role of estrogen in skeletal muscle, with particular regard to muscle mass, mitochondrial function, the response to muscle damage, and the potential implications for human physiology and mobility.
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ITGβ6 Facilitates Skeletal Muscle Development by Maintaining the Properties and Cytoskeleton Stability of Satellite Cells. LIFE (BASEL, SWITZERLAND) 2022; 12:life12070926. [PMID: 35888016 PMCID: PMC9318838 DOI: 10.3390/life12070926] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/25/2022] [Revised: 06/11/2022] [Accepted: 06/16/2022] [Indexed: 11/25/2022]
Abstract
Integrin proteins are important receptors connecting the intracellular skeleton of satellite cells and the extracellular matrix (ECM), playing an important role in the process of skeletal muscle development. In this research, the function of ITGβ6 in regulating the differentiation of satellite cells was studied. Transcriptome and proteome analysis indicated that Itgβ6 is a key node connecting ECM-related proteins to the cytoskeleton, and it is necessary for the integrity of the membrane structure and stability of the cytoskeletal system, which are essential for satellite cell adhesion. Functional analysis revealed that the ITGβ6 protein could affect the myogenic differentiation potential of satellite cells by regulating the expression of PAX7 protein, thus regulating the formation of myotubes. Moreover, ITGβ6 is involved in muscle development by regulating cell-adhesion-related proteins, such as β-laminin, and cytoskeletal proteins such as PXN, DMD, and VCL. In conclusion, the effect of ITGβ6 on satellite cell differentiation mainly occurs before the initiation of differentiation, and it regulates terminal differentiation by affecting satellite cell characteristics, cell adhesion, and the stability of the cytoskeleton system.
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Larson AA, Shams AS, McMillin SL, Sullivan BP, Vue C, Roloff ZA, Batchelor E, Kyba M, Lowe DA. Estradiol deficiency reduces the satellite cell pool by impairing cell cycle progression. Am J Physiol Cell Physiol 2022; 322:C1123-C1137. [PMID: 35442828 PMCID: PMC9169829 DOI: 10.1152/ajpcell.00429.2021] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2021] [Revised: 03/31/2022] [Accepted: 04/17/2022] [Indexed: 12/22/2022]
Abstract
The size of the satellite cell pool is reduced in estradiol (E2)-deficient female mice and humans. Here, we use a combination of in vivo and in vitro approaches to identify mechanisms, whereby E2 deficiency impairs satellite cell maintenance. By measuring satellite cell numbers in mice at several early time points postovariectomy (Ovx), we determine that satellite cell numbers decline by 33% between 10 and 14 days post-Ovx in tibialis anterior and gastrocnemius muscles. At 14 days post-Ovx, we demonstrate that satellite cells have a reduced propensity to transition from G0/G1 to S and G2/M phases, compared with cells from ovary-intact mice, associated with changes in two key satellite cell cycle regulators, ccna2 and p16INK4a. Further, freshly isolated satellite cells treated with E2 in vitro have 62% greater cell proliferation and require less time to complete the first division. Using clonal and differentiation assays, we measured 69% larger satellite cell colonies and enhanced satellite cell-derived myoblast differentiation with E2 treatment compared with vehicle-treated cells. Together, these results identify a novel mechanism for preservation of the satellite cell pool by E2 via promotion of satellite cell cycling.
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Affiliation(s)
- Alexie A Larson
- Department of Integrative Biology and Physiology, Medical School, University of Minnesota, Minneapolis, Minnesota
| | - Ahmed S Shams
- Lillehei Heart Institute, Medical School, University of Minnesota, Minneapolis, Minnesota
- Department of Pediatrics, Medical School, University of Minnesota, Minneapolis, Minnesota
- Human Anatomy and Embryology Department, Faculty of Medicine, Suez Canal University, Ismailia, Egypt
| | - Shawna L McMillin
- Divisions of Rehabilitation Science and Physical Therapy, Department of Rehabilitation Medicine, Medical School, University of Minnesota, Minneapolis, Minnesota
| | - Brian P Sullivan
- Divisions of Rehabilitation Science and Physical Therapy, Department of Rehabilitation Medicine, Medical School, University of Minnesota, Minneapolis, Minnesota
| | - Cha Vue
- Divisions of Rehabilitation Science and Physical Therapy, Department of Rehabilitation Medicine, Medical School, University of Minnesota, Minneapolis, Minnesota
| | - Zachery A Roloff
- Divisions of Rehabilitation Science and Physical Therapy, Department of Rehabilitation Medicine, Medical School, University of Minnesota, Minneapolis, Minnesota
| | - Eric Batchelor
- Department of Integrative Biology and Physiology, Medical School, University of Minnesota, Minneapolis, Minnesota
| | - Michael Kyba
- Lillehei Heart Institute, Medical School, University of Minnesota, Minneapolis, Minnesota
- Department of Pediatrics, Medical School, University of Minnesota, Minneapolis, Minnesota
| | - Dawn A Lowe
- Divisions of Rehabilitation Science and Physical Therapy, Department of Rehabilitation Medicine, Medical School, University of Minnesota, Minneapolis, Minnesota
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29
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Fortino SA, Wageh M, Pontello R, McGlory C, Kumbhare D, Phillips SM, Parise G. Sex-Based Differences in the Myogenic Response and Inflammatory Gene Expression Following Eccentric Contractions in Humans. Front Physiol 2022; 13:880625. [PMID: 35574443 PMCID: PMC9099417 DOI: 10.3389/fphys.2022.880625] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2022] [Accepted: 03/14/2022] [Indexed: 11/13/2022] Open
Abstract
After muscle injury, the interaction between muscle satellite cells (SC) and the immune response is instrumental for the repair and regeneration of skeletal muscle tissue. Studies have reported sex-based differences in the skeletal muscle inflammatory and regenerative response following injury. However, many of these studies investigated such differences by manipulating the concentration of estradiol, in rodents and humans, without directly comparing males to females. We sought to explore differences in the myogenic and inflammatory response following unaccustomed eccentric exercise in males and females. We hypothesized that females would have a blunted myogenic and inflammatory response as compared to males. Methods: 26 (13 male, 13 female) healthy young adults (22 ± 0.4 years [mean ± SEM]) performed 300 maximal eccentric contractions (180°/s) of the knee extensors. Muscle biopsies were taken before (pre) and 48 h (post) following eccentric damage. SC content and activation were determined by immunohistochemical and real time-polymerase chain reaction (rt-PCR) analysis. Inflammatory markers were analyzed using rt-PCR. Results: Following eccentric damage, males had a greater expansion of type I-associated SC (p < 0.05), and there was a trend for a greater expansion in total SC (type I + II fibers) (p = 0.06) compared to females. There was a trend for a greater increase in Pax7 and CCL2 gene expression in males compared to females (p = 0.09). Conclusion: We conclude that there are sex-based differences in the myogenic and inflammatory response, where females have a blunted SC and inflammatory response.
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Affiliation(s)
| | - Mai Wageh
- Department of Kinesiology, McMaster University, Hamilton, ON, Canada
| | - Riley Pontello
- Department of Kinesiology, McMaster University, Hamilton, ON, Canada
| | - Chris McGlory
- Department of Kinesiology, McMaster University, Hamilton, ON, Canada
- School of Kinesiology and Health Studies, Queen’s University, Kingston, ON, Canada
| | - Dinesh Kumbhare
- Toronto Rehabilitation Institute, University Health Network, Toronto, ON, Canada
| | | | - Gianni Parise
- Department of Kinesiology, McMaster University, Hamilton, ON, Canada
- *Correspondence: Gianni Parise,
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30
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Oxfeldt M, Dalgaard LB, Farup J, Hansen M. Sex Hormones and Satellite Cell Regulation in Women. TRANSLATIONAL SPORTS MEDICINE 2022; 2022:9065923. [PMID: 38655160 PMCID: PMC11022763 DOI: 10.1155/2022/9065923] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2022] [Revised: 02/17/2022] [Accepted: 03/02/2022] [Indexed: 04/26/2024]
Abstract
Recent years have seen growing scholarly interest in female physiology in general. Moreover, particular attention has been devoted to how concentrations of female sex hormones vary during the menstrual cycle and menopausal transition and how hormonal contraception and hormonal therapy influence skeletal muscle tissue. While much effort has been paid to macro outcomes, such as muscle function or mass, rather less attention has been paid to mechanistic work that may help explain the underlying mechanism through which sex hormones regulate skeletal muscle tissue. Evidence from animal studies shows a strong relationship between the female sex hormone estrogen and satellite cells (SCs), a population of muscle stem cells involved in skeletal muscle regulation. A few human studies investigating this relationship have been published only recently. Thus, the purpose of this study was to bring an updated review on female sex hormones and their role in SC regulation. First, we describe how SCs regulate skeletal muscle maintenance and repair and introduce sex hormone signaling within the muscle. Second, we present evidence from animal studies elucidating how estrogen deficiency and supplementation influence SCs. Third, we present results from investigations from human trials including women whose concentrations of female hormones differ due to menopause, hormone therapy, hormonal contraceptives, and the menstrual cycle. Finally, we discuss research and methodological recommendations for future studies aiming at elucidating the link between female sex hormones and SCs with respect to aging and training.
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Affiliation(s)
- Mikkel Oxfeldt
- Department of Public Health, Aarhus University, Aarhus, Denmark
| | | | - Jean Farup
- Department of Biomedicine, Aarhus University, Aarhus, Denmark
- Steno Diabetes Center Aarhus, Aarhus University Hospital, Aarhus, Denmark
| | - Mette Hansen
- Department of Public Health, Aarhus University, Aarhus, Denmark
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31
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Emmert ME, Aggarwal P, Shay-Winkler K, Lee SJ, Goh Q, Cornwall R. Sex-specific role of myostatin signaling in neonatal muscle growth, denervation atrophy, and neuromuscular contractures. eLife 2022; 11:81121. [PMID: 36314781 PMCID: PMC9873256 DOI: 10.7554/elife.81121] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2022] [Accepted: 10/31/2022] [Indexed: 01/27/2023] Open
Abstract
Neonatal brachial plexus injury (NBPI) causes disabling and incurable muscle contractures that result from impaired longitudinal growth of denervated muscles. This deficit in muscle growth is driven by increased proteasome-mediated protein degradation, suggesting a dysregulation of muscle proteostasis. The myostatin (MSTN) pathway, a prominent muscle-specific regulator of proteostasis, is a putative signaling mechanism by which neonatal denervation could impair longitudinal muscle growth, and thus a potential target to prevent NBPI-induced contractures. Through a mouse model of NBPI, our present study revealed that pharmacologic inhibition of MSTN signaling induces hypertrophy, restores longitudinal growth, and prevents contractures in denervated muscles of female but not male mice, despite inducing hypertrophy of normally innervated muscles in both sexes. Additionally, the MSTN-dependent impairment of longitudinal muscle growth after NBPI in female mice is associated with perturbation of 20S proteasome activity, but not through alterations in canonical MSTN signaling pathways. These findings reveal a sex dimorphism in the regulation of neonatal longitudinal muscle growth and contractures, thereby providing insights into contracture pathophysiology, identifying a potential muscle-specific therapeutic target for contracture prevention, and underscoring the importance of sex as a biological variable in the pathophysiology of neuromuscular disorders.
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Affiliation(s)
- Marianne E Emmert
- Department of Medical Sciences, University of Cincinnati College of MedicineCincinnatiUnited States
| | - Parul Aggarwal
- Division of Orthopaedic Surgery, Cincinnati Children’s Hospital Medical CenterCincinnatiUnited States
| | - Kritton Shay-Winkler
- Division of Orthopaedic Surgery, Cincinnati Children’s Hospital Medical CenterCincinnatiUnited States
| | - Se-Jin Lee
- The Jackson LaboratoryFarmingtonUnited States,Department of Genetics and Genome Sciences, University of Connecticut School of MedicineFarmingtonUnited States
| | - Qingnian Goh
- Division of Orthopaedic Surgery, Cincinnati Children’s Hospital Medical CenterCincinnatiUnited States,Department of Orthopaedic Surgery, University of Cincinnati College of MedicineCincinnatiUnited States
| | - Roger Cornwall
- Division of Orthopaedic Surgery, Cincinnati Children’s Hospital Medical CenterCincinnatiUnited States,Department of Orthopaedic Surgery, University of Cincinnati College of MedicineCincinnatiUnited States,Division of Developmental Biology, Cincinnati Children’s Hospital Medical CenterCincinnatiUnited States,Department of Pediatrics, University of Cincinnati College of MedicineCincinnatiUnited States
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32
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McMillin SL, Minchew EC, Lowe DA, Spangenburg EE. Skeletal muscle wasting: the estrogen side of sexual dimorphism. Am J Physiol Cell Physiol 2022; 322:C24-C37. [PMID: 34788147 PMCID: PMC8721895 DOI: 10.1152/ajpcell.00333.2021] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
The importance of defining sex differences across various biological and physiological mechanisms is more pervasive now than it has been over the past 15-20 years. As the muscle biology field pushes to identify small molecules and interventions to prevent, attenuate, or even reverse muscle wasting, we must consider the effect of sex as a biological variable. It should not be assumed that a therapeutic will affect males and females with equal efficacy or equivalent target affinities under conditions where muscle wasting is observed. With that said, it is not surprising to find that we have an unclear or even a poor understanding of the effects of sex or sex hormones on muscle wasting conditions. Although recent investigations are beginning to establish experimental approaches that will allow investigators to assess the impact of sex-specific hormones on muscle wasting, the field still needs rigorous scientific tools that will allow the community to address critical hypotheses centered around sex hormones. The focus of this review is on female sex hormones, specifically estrogens, and the roles that these hormones and their receptors play in skeletal muscle wasting conditions. With the overall review goal of assembling the current knowledge in the area of sexual dimorphism driven by estrogens with an effort to provide insights to interested physiologists on necessary considerations when trying to assess models for potential sex differences in cellular and molecular mechanisms of muscle wasting.
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Affiliation(s)
- Shawna L. McMillin
- 1Division of Rehabilitation Science, Department of Rehabilitation Medicine, Medical School, University of Minnesota, Minneapolis, Minnesota,2Division of Physical Therapy, Department of Rehabilitation Medicine, Medical School, University of Minnesota, Minneapolis, Minnesota
| | - Everett C. Minchew
- 3Department of Physiology, Brody School of Medicine, East Carolina Diabetes and Obesity Institute, East Carolina University, Greenville, North Carolina
| | - Dawn A. Lowe
- 1Division of Rehabilitation Science, Department of Rehabilitation Medicine, Medical School, University of Minnesota, Minneapolis, Minnesota,2Division of Physical Therapy, Department of Rehabilitation Medicine, Medical School, University of Minnesota, Minneapolis, Minnesota
| | - Espen E. Spangenburg
- 3Department of Physiology, Brody School of Medicine, East Carolina Diabetes and Obesity Institute, East Carolina University, Greenville, North Carolina
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33
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Chaiyasing R, Sugiura A, Ishikawa T, Ojima K, Warita K, Hosaka YZ. Estrogen modulates the skeletal muscle regeneration process and myotube morphogenesis: morphological analysis in mice with a low estrogen status. J Vet Med Sci 2021; 83:1812-1819. [PMID: 34670921 PMCID: PMC8762410 DOI: 10.1292/jvms.21-0495] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
The purpose of this study was to elucidate the functions of estrogen and two estrogen receptors (ERs; ERα and ERβ) in the myoregeneration process and morphogenesis. Cardiotoxin (CTX) was injected into the tibialis anterior (TA) muscles of ovariectomized (OVX) mice to induce muscle injury, and subsequent myoregeneration was morphologically assessed. The diameter of regenerated myotubes in OVX mice was significantly smaller than that in intact mice at all time points of measurement. OVX mice also showed lower muscle recovery rates and slower speeds than did intact mice. ER protein levels showed a predominance of ERβ over ERα in both intact and OVX states. The ERβ level was increased significantly at 7 days after CTX injection in OVX mice and remained at a high level until 14 days. In addition, continuous administration of E2 to OVX mice in which muscle injury was induced resulted in a significantly larger diameter of regenerated myotubes than that in mice that did not receive estrogen. The results indicate that estrogen is an essential factor in the myoregeneration process since estrogen depletion delayed myoregeneration in injured muscles and administration of estrogen under the condition of a low estrogen status rescued delayed myoregeneration. The results strongly suggested that ERβ may be a factor that promotes myoregeneration more than does ERα.
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Affiliation(s)
- Rattanatrai Chaiyasing
- Laboratory of Basic Veterinary Science, United Graduate School of Veterinary Science, Yamaguchi University.,Faculty of Veterinary Sciences, Maha Sarakham University
| | - Akihiro Sugiura
- Department of Veterinary Anatomy, Faculty of Agriculture, Tottori University
| | - Takuro Ishikawa
- Laboratory of Basic Veterinary Science, United Graduate School of Veterinary Science, Yamaguchi University
| | - Koichi Ojima
- Muscle Biology Research Unit, Division of Animal Products Research, Institute of Livestock and Grassland Science, NARO
| | - Katsuhiko Warita
- Laboratory of Basic Veterinary Science, United Graduate School of Veterinary Science, Yamaguchi University.,Department of Veterinary Anatomy, Faculty of Agriculture, Tottori University
| | - Yoshinao Z Hosaka
- Laboratory of Basic Veterinary Science, United Graduate School of Veterinary Science, Yamaguchi University.,Department of Veterinary Anatomy, Faculty of Agriculture, Tottori University
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34
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Rosa-Caldwell ME, Mortreux M, Kaiser UB, Sung DM, Bouxsein ML, Dunlap KR, Greene NP, Rutkove SB. The oestrous cycle and skeletal muscle atrophy: Investigations in rodent models of muscle loss. Exp Physiol 2021; 106:2472-2488. [PMID: 34569104 DOI: 10.1113/ep089962] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2021] [Accepted: 09/20/2021] [Indexed: 01/21/2023]
Abstract
NEW FINDINGS What is the central question of this study? Is the oestrous cycle affected during disuse atrophies and, if so, how are oestrous cycle changes related to musculoskeletal outcomes? What is the main finding and its importance? Rodent oestrous cycles were altered during disuse atrophy, which was correlated with musculoskeletal outcomes. However, the oestrous cycle did not appear to be changed by Lewis lung carcinoma, which resulted in no differences in muscle size in comparison to healthy control animals. These findings suggest a relationship between the oestrous cycle and muscle size during atrophic pathologies. ABSTRACT Recent efforts have focused on improving our understanding of female muscle physiology during exposure to muscle atrophic stimuli. A key feature of female rodent physiology is the oestrous cycle. However, it is not known how such stimuli interact with the oestrous cycle to influence muscle health. In this study, we investigated the impact of muscle atrophic stimuli on the oestrous cycle and how these alterations are correlated with musculoskeletal outcomes. A series of experiments were performed in female rodents, including hindlimb unloading (HU), HU followed by 24 h of reloading, HU combined with dexamethasone treatment, and Lewis lung carcinoma. The oestrous cycle phase was assessed throughout each intervention and correlated with musculoskeletal outcomes. Seven or 14 days of HU increased the duration in dioestrus or metoestrus (D/M; low hormones) and was negatively correlated with gastrocnemius mass. Time spent in D/M was also negatively correlated with changes in grip strength and bone density after HU, and with muscle recovery 24 h after the cessation of HU. The addition of dexamethasone strengthened these relationships between time in D/M and reduced musculoskeletal outcomes. However, in animals with Lewis lung carcinoma, oestrous cyclicity did not differ from that of control animals, and time spent in D/M was not correlated with either gastrocnemius mass or tumour burden. In vitro experiments suggested that enhanced protein synthesis induced by estrogen might protect against muscle atrophy. In conclusion, muscle atrophic insults are correlated with changes in the oestrous cycle, which are associated with deterioration in musculoskeletal outcomes. The magnitude of oestrous cycle alterations depends on the atrophic stimuli.
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Affiliation(s)
- Megan E Rosa-Caldwell
- Department of Neurology, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, Massachusetts, USA.,Cachexia Research Laboratory, Exercise Science Research Center, Department of Health, Human Performance and Recreation, University of Arkansas, Fayetteville, Arkansas, USA
| | - Marie Mortreux
- Department of Neurology, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, Massachusetts, USA
| | - Ursula B Kaiser
- Division of Endocrinology, Diabetes and Hypertension, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts, USA
| | - Dong-Min Sung
- Department of Neurology, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, Massachusetts, USA
| | - Mary L Bouxsein
- Center for Advanced Orthopedic Studies, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, Massachusetts, USA
| | - Kirsten R Dunlap
- Cachexia Research Laboratory, Exercise Science Research Center, Department of Health, Human Performance and Recreation, University of Arkansas, Fayetteville, Arkansas, USA
| | - Nicholas P Greene
- Cachexia Research Laboratory, Exercise Science Research Center, Department of Health, Human Performance and Recreation, University of Arkansas, Fayetteville, Arkansas, USA
| | - Seward B Rutkove
- Department of Neurology, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, Massachusetts, USA
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Natural Compounds Attenuate Denervation-Induced Skeletal Muscle Atrophy. Int J Mol Sci 2021; 22:ijms22158310. [PMID: 34361076 PMCID: PMC8348757 DOI: 10.3390/ijms22158310] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2021] [Revised: 07/29/2021] [Accepted: 07/29/2021] [Indexed: 12/14/2022] Open
Abstract
The weight of skeletal muscle accounts for approximately 40% of the whole weight in a healthy individual, and the normal metabolism and motor function of the muscle are indispensable for healthy life. In addition, the skeletal muscle of the maxillofacial region plays an important role not only in eating and swallowing, but also in communication, such as facial expressions and conversations. In recent years, skeletal muscle atrophy has received worldwide attention as a serious health problem. However, the mechanism of skeletal muscle atrophy that has been clarified at present is insufficient, and a therapeutic method against skeletal muscle atrophy has not been established. This review provides views on the importance of skeletal muscle in the maxillofacial region and explains the differences between skeletal muscles in the maxillofacial region and other regions. We summarize the findings to change in gene expression in muscle remodeling and emphasize the advantages and disadvantages of denervation-induced skeletal muscle atrophy model. Finally, we discuss the newly discovered beneficial effects of natural compounds on skeletal muscle atrophy.
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Al-Zaeed N, Budai Z, Szondy Z, Sarang Z. TAM kinase signaling is indispensable for proper skeletal muscle regeneration in mice. Cell Death Dis 2021; 12:611. [PMID: 34120143 PMCID: PMC8197762 DOI: 10.1038/s41419-021-03892-5] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2021] [Revised: 05/21/2021] [Accepted: 05/24/2021] [Indexed: 02/05/2023]
Abstract
Skeletal muscle regeneration following injury results from the proliferation and differentiation of myogenic stem cells, called satellite cells, located beneath the basal lamina of the muscle fibers. Infiltrating macrophages play an essential role in the process partly by clearing the necrotic cell debris, partly by producing cytokines that guide myogenesis. Infiltrating macrophages are at the beginning pro-inflammatory, but phagocytosis of dead cells induces a phenotypic change to become healing macrophages that regulate inflammation, myoblast fusion and growth, fibrosis, vascularization and return to homeostasis. The TAM receptor kinases Mer and Axl are known efferocytosis receptors in macrophages functioning in tolerogenic or inflammatory conditions, respectively. Here we investigated their involvement in the muscle regeneration process by studying the muscle repair following cardiotoxin-induced injury in Mer-/- mice. We found that Axl was the only TAM kinase receptor expressed on the protein level by skeletal muscle and C2C12 myoblast cells, while Mer was the dominant TAM kinase receptor in the CD45+ cells, and its expression significantly increased during repair. Mer ablation did not affect the skeletal muscle weight or structure, but following injury it resulted in a delay in the clearance of necrotic muscle cell debris, in the healing phenotype conversion of macrophages and consequently in a significant delay in the full muscle regeneration. Administration of the TAM kinase inhibitor BMS-777607 to wild type mice mimicked the effect of Mer ablation on the muscle regeneration process, but in addition, it resulted in a long-persisting necrotic area. Finally, in vitro inhibition of TAM kinase signaling in C2C12 myoblasts resulted in decreased viability and in impaired myotube growth. Our work identifies Axl as a survival and growth receptor in the mouse myoblasts, and reveals the contribution of TAM kinase-mediated signaling to the skeletal muscle regeneration both in macrophages and in myoblasts.
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Affiliation(s)
- Nour Al-Zaeed
- grid.7122.60000 0001 1088 8582Doctoral School of Molecular Cell and Immune Biology, University of Debrecen, 1 Egyetem square, Debrecen, H-4032 Hungary
| | - Zsófia Budai
- grid.7122.60000 0001 1088 8582Department of Biochemistry and Molecular Biology, Faculty of Medicine, University of Debrecen, 1 Egyetem square, Debrecen, H-4032 Hungary
| | - Zsuzsa Szondy
- grid.7122.60000 0001 1088 8582Department of Biochemistry and Molecular Biology, Faculty of Medicine, University of Debrecen, 1 Egyetem square, Debrecen, H-4032 Hungary ,grid.7122.60000 0001 1088 8582Dental Biochemistry, Faculty of Dentistry, University of Debrecen, 1 Egyetem square, Debrecen, H-4032 Hungary
| | - Zsolt Sarang
- grid.7122.60000 0001 1088 8582Department of Biochemistry and Molecular Biology, Faculty of Medicine, University of Debrecen, 1 Egyetem square, Debrecen, H-4032 Hungary
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Safety and clinical outcome of tamoxifen in Duchenne Muscular Dystrophy. Neuromuscul Disord 2021; 31:803-813. [PMID: 34304968 DOI: 10.1016/j.nmd.2021.05.005] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2020] [Revised: 05/13/2021] [Accepted: 05/18/2021] [Indexed: 01/25/2023]
Abstract
Patients having Duchenne Muscular Dystrophy (DMD) are currently being treated with corticosteroids, which slow down disease progression at the expense of serious adverse effects. Tamoxifen is a pro-drug some of whose metabolites interact with the nuclear estrogen receptor, leading to anti-fibrotic and muscle-protective effects as has been demonstrated in a murine model of DMD. Here we report the results from a monocentric single arm prospective study in 13 ambulant boys aged 6-14 years with genetically confirmed DMD, aimed to assess the safety of tamoxifen and its impact on disease progression. Boys were treated for up to 3 years with 20 mg/day of oral tamoxifen, in addition to their ongoing corticosteroid treatment. For 8 of these patients, outcome was compared to an age- and performance-matched 12-month natural history dataset. The primary end point was the 6-minute walk test. Secondary end points were the NorthStar assessment, timed function tests, pulmonary function, the biomarker creatine phosphokinase and adverse effects. No adverse effects were noticed other than mild gynecomastia in 4 boys. Tamoxifen-treated patients retained motor and respiratory function, compared with a significant deterioration of age-matched historical control patients receiving corticosteroids only. These encouraging findings warrant a larger clinical trial to substantiate the use of tamoxifen in Duchenne Muscular Dystrophy.
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Chaiyasing R, Ishikawa T, Warita K, Hosaka YZ. Absence of estrogen receptors delays myoregeneration and leads to intermuscular adipogenesis in a low estrogen status: Morphological comparisons in estrogen receptor alpha and beta knock out mice. J Vet Med Sci 2021; 83:1022-1030. [PMID: 33967186 PMCID: PMC8349812 DOI: 10.1292/jvms.20-0696] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
This study aimed to investigate the function of estrogen receptors (ERs) in myoregeneration and intermuscular adipogenesis. Ovariectomized (OVX) ERα knockout
(KO) mice and ERβ KO mice were used to assess the effect of estrogen on the myoregenerative process. Tibialis anterior muscle was collected on days 7, 10, and
14 after cardiotoxin injection to assess myotube morphology and adipogenesis area. Regenerated myotubes from OVX-ERβ KO mice were consistently smaller in
diameter than those from OVX-ERα KO and OVX-wild-type mice, whereas the adipogenesis area of OVX-ERβ KO mice was consistently greater than that of the other
types. Therefore, ERβ may be an influential factor in promoting myoregeneration and adipogenesis inhibition compared to ERα.
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Affiliation(s)
- Rattanatrai Chaiyasing
- Laboratory of Basic Veterinary Science, United Graduate School of Veterinary Science, Yamaguchi University, Yamaguchi 753-8515, Japan.,Faculty of Veterinary Sciences, Office of Academic Affairs, Maha Sarakham University, Maha Sarakham 44000, Thailand
| | - Takuro Ishikawa
- Laboratory of Basic Veterinary Science, United Graduate School of Veterinary Science, Yamaguchi University, Yamaguchi 753-8515, Japan
| | - Katsuhiko Warita
- Laboratory of Basic Veterinary Science, United Graduate School of Veterinary Science, Yamaguchi University, Yamaguchi 753-8515, Japan.,Department of Veterinary Anatomy, Faculty of Agriculture, Tottori University, Tottori 680-8553, Japan
| | - Yoshinao Z Hosaka
- Laboratory of Basic Veterinary Science, United Graduate School of Veterinary Science, Yamaguchi University, Yamaguchi 753-8515, Japan.,Department of Veterinary Anatomy, Faculty of Agriculture, Tottori University, Tottori 680-8553, Japan
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Oxfeldt M, Dalgaard LB, Risikesan J, Johansen FT, Hansen M. Influence of Fermented Red Clover Extract on Skeletal Muscle in Early Postmenopausal Women: A Double-Blinded Cross-Over Study. Nutrients 2020; 12:E3587. [PMID: 33238442 PMCID: PMC7700192 DOI: 10.3390/nu12113587] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2020] [Revised: 11/16/2020] [Accepted: 11/18/2020] [Indexed: 12/12/2022] Open
Abstract
Objective: To investigate effects of supplementation with a fermented red clover (RC) extract on signaling proteins related to muscle protein synthesis and breakdown at rest and in response to a resistance exercise bout. Methods: Ten postmenopausal women completed a double-blinded cross-over trial with two different intervention periods performed in random order: (A) RC extract twice daily for 14 days, and (B) placebo drink twice daily for 14 days. The intervention periods were separated by a two-week washout period. After each intervention period a muscle tissue sample was obtained before and three hours after a one-legged resistance exercise bout. Muscle strength was assessed before and after each intervention period. Results: Protein expression of FOXO1 and FOXO3a, two key transcription factors involved in protein degradation, were significantly lower and HSP27, a protein involved in cell protection and prevention of protein aggregation was significantly higher following RC extract compared to placebo. No significant treatment × time interaction was observed for muscle protein expression in response to exercise. However, p-mTOR, p-p70S6k and HSP90 protein content were significantly increased in response to exercise in both groups. Conclusions: This study demonstrates that RC extract supplementation downregulates molecular markers of muscle protein degradation compared to placebo in postmenopausal women.
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Affiliation(s)
- Mikkel Oxfeldt
- Department of Public Health, Aarhus University, 8000 Aarhus C, Denmark; (M.O.); (L.B.D.); (F.T.J.)
| | - Line Barner Dalgaard
- Department of Public Health, Aarhus University, 8000 Aarhus C, Denmark; (M.O.); (L.B.D.); (F.T.J.)
| | - Jeyanthini Risikesan
- Department of Clinical Medicine, Diabetes and Hormones Diseases, Aarhus University Hospital, 8200 Aarhus N, Denmark;
| | - Frank Ted Johansen
- Department of Public Health, Aarhus University, 8000 Aarhus C, Denmark; (M.O.); (L.B.D.); (F.T.J.)
| | - Mette Hansen
- Department of Public Health, Aarhus University, 8000 Aarhus C, Denmark; (M.O.); (L.B.D.); (F.T.J.)
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