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Carrara E, Soliveri L, Poloni S, Bozzetto M, Campiglio CE. Effects of high-frequency mechanical stimuli on flow related vascular cell biology. Int J Artif Organs 2024:3913988241268105. [PMID: 39166431 DOI: 10.1177/03913988241268105] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/23/2024]
Abstract
Mechanical forces related to blood pressure and flow patterns play a crucial role in vascular homeostasis. Perturbations in vascular stresses and strain resulting from changes in hemodynamic may occur in pathological conditions, leading to vascular dysfunction as well as in vascular prosthesis, arteriovenous shunt for hemodialysis and in mechanical circulation support. Turbulent-like blood flows can induce high-frequency vibrations of the vessel wall, and this stimulus has recently gained attention as potential contributors to vascular pathologies, such as development of intimal hyperplasia in arteriovenous fistula for hemodialysis. However, the biological response of vascular cells to this stimulus remains incompletely understood. This review provides an analysis of the existing literature concerning the impact of high-frequency stimuli on vascular cell morphology, function, and gene expression. Morphological and functional investigations reveal that vascular cells stimulated at frequencies higher than the normal heart rate exhibit alterations in cell shape, alignment, and proliferation, potentially leading to vessel remodeling. Furthermore, vibrations modulate endothelial and smooth muscle cells gene expression, affecting pathways related to inflammation, oxidative stress, and muscle hypertrophy. Understanding the effects of high-frequency vibrations on vascular cells is essential for unraveling the mechanisms underlying vascular diseases and identifying potential therapeutic targets. Nevertheless, there are still gaps in our understanding of the molecular pathways governing these cellular responses. Further research is necessary to elucidate these mechanisms and their therapeutic implications for vascular diseases.
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Affiliation(s)
- Elena Carrara
- Department of Biomedical Engineering, Istituto di Ricerche Farmacologiche Mario Negri IRCCS, Bergamo, Italy
| | - Luca Soliveri
- Department of Biomedical Engineering, Istituto di Ricerche Farmacologiche Mario Negri IRCCS, Bergamo, Italy
| | - Sofia Poloni
- Department of Engineering and Applied Sciences, University of Bergamo, Dalmine, Italy
| | - Michela Bozzetto
- Department of Biomedical Engineering, Istituto di Ricerche Farmacologiche Mario Negri IRCCS, Bergamo, Italy
| | - Chiara Emma Campiglio
- Department of Management, Information and Production Engineering, University of Bergamo, Dalmine, Italy
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2
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Faraldi M, Sansoni V, Vitale J, Perego S, Gomarasca M, Verdelli C, Messina C, Sconfienza LM, Banfi G, Corbetta S, Lombardi G. Plasma microRNA signature associated with skeletal muscle wasting in post-menopausal osteoporotic women. J Cachexia Sarcopenia Muscle 2024; 15:690-701. [PMID: 38272849 PMCID: PMC10995257 DOI: 10.1002/jcsm.13421] [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: 01/18/2023] [Revised: 11/07/2023] [Accepted: 12/07/2023] [Indexed: 01/27/2024] Open
Abstract
BACKGROUND Skeletal muscle mass wasting almost invariably accompanies bone loss in elderly, and the coexistence of these two conditions depends on the tight endocrine crosstalk existing between the two organs, other than the biomechanical coupling. Since the current diagnostics limitation in this field, and given the progressive population aging, more effective tools are needed. The aim of this study was to identify circulating microRNAs (miRNAs) as potential biomarkers for muscle mass wasting in post-menopausal osteoporotic women. METHODS One hundred seventy-nine miRNAs were assayed by quantitative real-time polymerase chain reaction in plasma samples from 28 otherwise healthy post-menopausal osteoporotic women (73.4 ± 6.6 years old). The cohort was divided in tertiles based on appendicular skeletal muscle mass index (ASMMI) to better highlight the differences on skeletal muscle mass (first tertile: n = 9, ASMMI = 4.88 ± 0.40 kg·m-2; second tertile: n = 10, ASMMI = 5.73 ± 0.23 kg·m-2; third tertile: n = 9, ASMMI = 6.40 ± 0.22 kg·m-2). Receiver operating characteristic (ROC) curves were calculated to estimate the diagnostic potential of miRNAs. miRNAs displaying a statistically significant fold change ≥ ±1.5 and area under the curve (AUC) > 0.800 (P < 0.05) between the first and third tertiles were considered. A linear regression model was applied to estimate the association between miRNA expression and ASMMI in the whole population, adjusting for body mass index, age, total fat (measured by total-body dual-energy X-ray absorptiometry [DXA]) and bone mineral density (measured by femur DXA). Circulating levels of adipo-myokines were evaluated by bead-based immunofluorescent assays and enzyme-linked immunosorbent assays. RESULTS Five miRNAs (hsa-miR-221-3p, hsa-miR-374b-5p, hsa-miR-146a-5p, hsa-miR-126-5p and hsa-miR-425-5p) resulted down-regulated and two miRNAs (hsa-miR-145-5p and hsa-miR-25-3p) were up-regulated in the first tertile (relative-low ASMMI) compared with the third tertile (relative-high ASMMI) (fold change ≥ ±1.5; P-value < 0.05). All the corresponding ROC curves had AUC > 0.8 (P < 0.05). Two signatures hsa-miR-126-5p, hsa-miR-146a-5p and hsa-miR-425-5p; and hsa-miR-126-5p, hsa-miR-146a-5p, hsa-miR-145-5p and hsa-miR-25-3p showed the highest AUC, 0.914 (sensitivity = 77.78%; specificity = 100.00%) and 0.901 (sensitivity = 88.89%; specificity = 100.00%), respectively. CONCLUSIONS In this study, we identified, for the first time, two miRNA signatures, hsa-miR-126-5p, hsa-miR-146a-5p and hsa-miR-425-5p; and hsa-miR-126-5p, hsa-miR-146a-5p, hsa-miR-145-5p and hsa-miR-25-3p, specifically associated with muscle mass wasting in post-menopausal osteoporotic women.
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Affiliation(s)
- Martina Faraldi
- Laboratory of Experimental Biochemistry and Molecular BiologyIRCCS Istituto Ortopedico GaleazziMilanItaly
| | - Veronica Sansoni
- Laboratory of Experimental Biochemistry and Molecular BiologyIRCCS Istituto Ortopedico GaleazziMilanItaly
| | - Jacopo Vitale
- Laboratory of Movement and Sport ScienceIRCCS Istituto Ortopedico GaleazziMilanItaly
| | - Silvia Perego
- Laboratory of Experimental Biochemistry and Molecular BiologyIRCCS Istituto Ortopedico GaleazziMilanItaly
| | - Marta Gomarasca
- Laboratory of Experimental Biochemistry and Molecular BiologyIRCCS Istituto Ortopedico GaleazziMilanItaly
| | - Chiara Verdelli
- Laboratory of Experimental EndocrinologyIRCCS Istituto Ortopedico GaleazziMilanItaly
| | - Carmelo Messina
- OU Diagnostic and Interventional RadiologyIRCCS Istituto Ortopedico GaleazziMilanItaly
- Department of Biomedical Science for HealthUniversity of MilanMilanItaly
| | - Luca M. Sconfienza
- OU Diagnostic and Interventional RadiologyIRCCS Istituto Ortopedico GaleazziMilanItaly
- Department of Biomedical Science for HealthUniversity of MilanMilanItaly
| | - Giuseppe Banfi
- Laboratory of Experimental Biochemistry and Molecular BiologyIRCCS Istituto Ortopedico GaleazziMilanItaly
- Vita‐Salute San Raffaele UniversityMilanItaly
| | - Sabrina Corbetta
- Department of Biomedical, Surgical and Dental SciencesUniversity of MilanMilanItaly
- Endocrinology and Diabetology ServiceIRCCS Istituto Ortopedico GaleazziMilanItaly
| | - Giovanni Lombardi
- Laboratory of Experimental Biochemistry and Molecular BiologyIRCCS Istituto Ortopedico GaleazziMilanItaly
- Department of Athletics, Strength and ConditioningPoznań University of Physical EducationPoznańPoland
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3
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Wherley TJ, Thomas S, Millay DP, Saunders T, Roy S. Molecular regulation of myocyte fusion. Curr Top Dev Biol 2024; 158:53-82. [PMID: 38670716 DOI: 10.1016/bs.ctdb.2024.01.016] [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] [Indexed: 04/28/2024]
Abstract
Myocyte fusion is a pivotal process in the development and regeneration of skeletal muscle. Failure during fusion can lead to a range of developmental as well as pathological consequences. This review aims to comprehensively explore the intricate processes underlying myocyte fusion, from the molecular to tissue scale. We shed light on key players, such as the muscle-specific fusogens - Myomaker and Myomixer, in addition to some lesser studied molecules contributing to myocyte fusion. Conserved across vertebrates, Myomaker and Myomixer play a crucial role in driving the merger of plasma membranes of fusing myocytes, ensuring the formation of functional muscle syncytia. Our multiscale approach also delves into broader cell and tissue dynamics that orchestrate the timing and positioning of fusion events. In addition, we explore the relevance of muscle fusogens to human health and disease. Mutations in fusogen genes have been linked to congenital myopathies, providing unique insights into the molecular basis of muscle diseases. We conclude with a discussion on potential therapeutic avenues that may emerge from manipulating the myocyte fusion process to remediate skeletal muscle disorders.
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Affiliation(s)
- Tanner J Wherley
- Division of Molecular Cardiovascular Biology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, United States
| | - Serena Thomas
- Warwick Medical School, University of Warwick, Coventry, United Kingdom; Institute of Molecular and Cell Biology, Agency for Science, Technology and Research, Proteos, Singapore, Singapore
| | - Douglas P Millay
- Division of Molecular Cardiovascular Biology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, United States; Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH, United States.
| | - Timothy Saunders
- Warwick Medical School, University of Warwick, Coventry, United Kingdom; Institute of Molecular and Cell Biology, Agency for Science, Technology and Research, Proteos, Singapore, Singapore.
| | - Sudipto Roy
- Institute of Molecular and Cell Biology, Agency for Science, Technology and Research, Proteos, Singapore, Singapore; Department of Biological Sciences, National University of Singapore, Singapore, Singapore; Department of Pediatrics, National University of Singapore, Singapore, Singapore.
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4
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Huang F, Xue F, Wang Q, Huang Y, Wan Z, Cao X, Zhong L. Transcription factor-target gene regulatory network analysis in human lung adenocarcinoma. J Thorac Dis 2023; 15:6996-7012. [PMID: 38249888 PMCID: PMC10797383 DOI: 10.21037/jtd-23-1688] [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: 11/03/2023] [Accepted: 12/19/2023] [Indexed: 01/23/2024]
Abstract
Background Transcription factors (TFs) play a crucial role in the occurrence and progression of lung adenocarcinoma (LUAD), and targeting TFs is an important direction for treating LUAD. However, targeting a single TF often fails to achieve satisfactory therapeutic outcomes. Furthermore, the regulatory TF-target gene networks involved in the development of LUAD is complex and not yet fully understood. Methods In this study, we performed RNA sequencing (RNA-seq) to analyze the transcriptome profile of human LUAD tissues and matched adjacent nontumor tissues. We selected the differentially expressed TFs, performed enrichment analysis and survival curve analysis, and predicted the regulatory networks of the top differential TFs with their target genes. Finally, alternative splicing analyses were also performed. Results We found that TFs GRHL3, SIX1, SIX2, SPDEF, and ETV4 were upregulated, while TAL1, EPAS1, SOX17, NR4A1, and EGR3 were significantly downregulated in LUAD tissues compared to normal tissues. We propose a potential GRHL3-CDH15-Wnt-β-catenin pro-oncogenic signaling axis and a potential TAL1-ADAMTS1-vascular antioncogenic signaling axis. In addition, we found that alternative splicing of intron retention (IR), approximate IR (XIR), multi-IR (MIR), approximate MIR (XMIR), and approximate alternative exon ends (XAE) showed abnormally increased frequencies in LUAD tissues. Conclusions These findings revealed a novel TF-target gene regulatory axis related to tumorigenesis and provided potential therapeutic targets and mechanisms for LUAD.
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Affiliation(s)
- Fang Huang
- Department of Pathology, Affiliated Hospital of Nantong University, Nantong, China
| | - Fangsu Xue
- Department of Respiration, Binhai County People’s Hospital, Yancheng, China
| | - Qing Wang
- Department of Thoracic surgery, Nantong Tumor Hospital/Tumor Hospital Affiliated to Nantong University, Nantong, China
| | - Yuchen Huang
- Department of Clinical Medicine, Medical College of Nantong University, Nantong, China
| | - Zixin Wan
- Department of Clinical Medicine, Medical College of Nantong University, Nantong, China
| | - Xiaowen Cao
- Department of Thoracic Surgery, Affiliated Hospital of Nantong University, Nantong, China
| | - Lou Zhong
- Department of Thoracic Surgery, Affiliated Hospital of Nantong University, Nantong, China
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5
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Taylor L, Wankell M, Saxena P, McFarlane C, Hebbard L. Cell adhesion an important determinant of myogenesis and satellite cell activity. BIOCHIMICA ET BIOPHYSICA ACTA-MOLECULAR CELL RESEARCH 2021; 1869:119170. [PMID: 34763027 DOI: 10.1016/j.bbamcr.2021.119170] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/05/2021] [Revised: 10/18/2021] [Accepted: 11/01/2021] [Indexed: 10/19/2022]
Abstract
Skeletal muscles represent a complex and highly organised tissue responsible for all voluntary body movements. Developed through an intricate and tightly controlled process known as myogenesis, muscles form early in development and are maintained throughout life. Due to the constant stresses that muscles are subjected to, skeletal muscles maintain a complex course of regeneration to both replace and repair damaged myofibers and to form new functional myofibers. This process, made possible by a pool of resident muscle stem cells, termed satellite cells, and controlled by an array of transcription factors, is additionally reliant on a diverse range of cell adhesion molecules and the numerous signaling cascades that they initiate. This article will review the literature surrounding adhesion molecules and their roles in skeletal muscle myogenesis and repair.
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Affiliation(s)
- Lauren Taylor
- Department of Molecular and Cell Biology, College of Public Health, Medical and Veterinary Sciences, Centre for Molecular Therapeutics, Centre for Tropical Bioinformatics and Molecular Biology, Australian Institute of Tropical Medicine and Health, James Cook University, Townsville, Queensland, Australia
| | - Miriam Wankell
- Department of Molecular and Cell Biology, College of Public Health, Medical and Veterinary Sciences, Centre for Molecular Therapeutics, Centre for Tropical Bioinformatics and Molecular Biology, Australian Institute of Tropical Medicine and Health, James Cook University, Townsville, Queensland, Australia
| | - Pankaj Saxena
- Department of Cardiothoracic Surgery, The Townsville University Hospital, Townsville, Queensland, Australia; College of Medicine, Dentistry, James Cook University, Townsville, Queensland, Australia
| | - Craig McFarlane
- Department of Molecular and Cell Biology, College of Public Health, Medical and Veterinary Sciences, Centre for Molecular Therapeutics, Centre for Tropical Bioinformatics and Molecular Biology, Australian Institute of Tropical Medicine and Health, James Cook University, Townsville, Queensland, Australia.
| | - Lionel Hebbard
- Department of Molecular and Cell Biology, College of Public Health, Medical and Veterinary Sciences, Centre for Molecular Therapeutics, Centre for Tropical Bioinformatics and Molecular Biology, Australian Institute of Tropical Medicine and Health, James Cook University, Townsville, Queensland, Australia; Storr Liver Centre, Westmead Institute for Medical Research, Westmead Hospital and University of Sydney, Sydney, New South Wales, Australia.
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Ding R, Horie M, Nagasaka S, Ohsumi S, Shimizu K, Honda H, Nagamori E, Fujita H, Kawamoto T. Effect of cell-extracellular matrix interaction on myogenic characteristics and artificial skeletal muscle tissue. J Biosci Bioeng 2020; 130:98-105. [PMID: 32278672 DOI: 10.1016/j.jbiosc.2020.02.008] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2019] [Revised: 02/06/2020] [Accepted: 02/07/2020] [Indexed: 01/23/2023]
Abstract
Although various types of artificial skeletal muscle tissue have been reported, the contractile forces generated by tissue-engineered artificial skeletal muscles remain to be improved for biological model and clinical applications. In this study, we investigated the effects of extracellular matrix (ECM) and supplementation of a small molecule, which has been reported to enhance α7β1 integrin expression (SU9516), on cell migration speed, cell fusion rate, myoblast (mouse C2C12 cells) differentiation and contractile force generation of tissue-engineered artificial skeletal muscles. When cells were cultured on varying ECM coated-surfaces, we observed significant enhancement in the migration speed, while the myotube formation (differentiation ratio) decreased in all except for cells cultured on Matrigel coated-surfaces. In contrast, SU9516 supplementation resulted in an increase in both the myotube width and differentiation ratio. Following combined culture with a Matrigel-coated surface and SU9516 supplementation, myotube width was further increased. Additionally, contractile forces produced by the tissue-engineered artificial skeletal muscles was augmented following combined culture. These findings indicate that regulation of the cell-ECM interaction is a promising approach to improve the function of tissue-engineered artificial skeletal muscles.
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Affiliation(s)
- Ran Ding
- Graduate School of Human and Environmental, Kyoto University, Yoshida-Konoe-Cho, Sakyo-ku, Kyoto 606-8507, Japan
| | - Masanobu Horie
- Division of Biochemical Engineering, Radioisotope Research Center, Kyoto University, Yoshida-Konoe-Cho, Sakyo-ku, Kyoto 606-8507, Japan.
| | - Sumire Nagasaka
- Department of Biomolecular Engineering, Graduate School of Engineering, Nagoya University, Nagoya 464-8603, Japan
| | - Saki Ohsumi
- Department of Biomolecular Engineering, Graduate School of Engineering, Nagoya University, Nagoya 464-8603, Japan
| | - Kazunori Shimizu
- Department of Biomolecular Engineering, Graduate School of Engineering, Nagoya University, Nagoya 464-8603, Japan
| | - Hiroyuki Honda
- Department of Biomolecular Engineering, Graduate School of Engineering, Nagoya University, Nagoya 464-8603, Japan; Innovative Research Center for Preventive Medical Engineering, Nagoya University, Nagoya 464-8601, Japan
| | - Eiji Nagamori
- Department of Biomedical Engineering, Osaka Institute of Technology, 5-16-1 Omiya, Asahi-ku, Osaka 535-8585, Japan
| | - Hideaki Fujita
- WPI, Immunology Frontier Research Center, Institute of Scientific and Industrial Research Center, Osaka University, Suita, Osaka 565-0871, Japan
| | - Takuo Kawamoto
- Graduate School of Human and Environmental, Kyoto University, Yoshida-Konoe-Cho, Sakyo-ku, Kyoto 606-8507, Japan; Division of Biological Chemistry, Radioisotope Research Center, Kyoto University, Yoshida-Konoe-Cho, Sakyo-ku, Kyoto 606-8507, Japan
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7
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Vieira PDC, Waghabi MC, Beghini DG, Predes D, Abreu JG, Mouly V, Butler-Browne G, Barbosa HS, Adesse D. Toxoplasma gondii Impairs Myogenesis in vitro, With Changes in Myogenic Regulatory Factors, Altered Host Cell Proliferation and Secretory Profile. Front Cell Infect Microbiol 2019; 9:395. [PMID: 31828046 PMCID: PMC6890860 DOI: 10.3389/fcimb.2019.00395] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2019] [Accepted: 11/04/2019] [Indexed: 01/06/2023] Open
Abstract
Toxoplasma gondii is the causative agent of toxoplasmosis, a parasitic disease with a wide global prevalence. The parasite forms cysts in skeletal muscle cells and neurons, although no evident association with inflammatory infiltrates has been typically found. We studied the impact of T. gondii infection on the myogenic program of mouse skeletal muscle cells (SkMC). The C2C12 murine myoblast cell line was infected with T. gondii tachyzoites (ME49 strain) for 24 h followed by myogenic differentiation induction. T. gondii infection caused a general decrease in myotube differentiation, fusion and maturation, along with decreased expression of myosin heavy chain. The expression of Myogenic Regulatory Factors Myf5, MyoD, Mrf4 and myogenin was modulated by the infection. Infected cultures presented increased proliferation rates, as assessed by Ki67 immunostaining, whereas neither host cell lysis nor apoptosis were significantly augmented in infected dishes. Cytokine Bead Array indicated that IL-6 and MCP-1 were highly increased in the medium from infected cultures, whereas TGF-β1 was consistently decreased. Inhibition of the IL-6 receptor or supplementation with recombinant TGF-β failed to reverse the deleterious effects caused by the infection. However, conditioned medium from infected cultures inhibited myogenesis in C2C12 cells. Activation of the Wnt/β-catenin pathway was impaired in T. gondii-infected cultures. Our data indicate that T. gondii leads SkMCs to a pro-inflammatory phenotype, leaving cells unresponsive to β-catenin activation, and inhibition of the myogenic differentiation program. Such deregulation may suggest muscle atrophy and molecular mechanisms similar to those involved in myositis observed in human patients.
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Affiliation(s)
| | - Mariana Caldas Waghabi
- Laboratório de Genômica Funcional e Bioinformática, Instituto Oswaldo Cruz, Fiocruz, Rio de Janeiro, Brazil
| | - Daniela Gois Beghini
- Laboratório de Inovação em Terapias, Ensino e Bioprodutos, Instituto Oswaldo Cruz, Fiocruz, Rio de Janeiro, Brazil
| | - Danilo Predes
- Laboratório de Embriologia de Vertebrados, Instituto de Ciências Biomédicas, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Jose Garcia Abreu
- Laboratório de Embriologia de Vertebrados, Instituto de Ciências Biomédicas, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Vincent Mouly
- Sorbonne Université, INSERM, Institut de Myologie, Myology Research Center UMRS974, Paris, France
| | - Gillian Butler-Browne
- Sorbonne Université, INSERM, Institut de Myologie, Myology Research Center UMRS974, Paris, France
| | - Helene Santos Barbosa
- Laboratório de Biologia Estrutural, Instituto Oswaldo Cruz, Fiocruz, Rio de Janeiro, Brazil
| | - Daniel Adesse
- Laboratório de Biologia Estrutural, Instituto Oswaldo Cruz, Fiocruz, Rio de Janeiro, Brazil
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Schroer AB, Mohamed JS, Willard MD, Setola V, Oestreich E, Siderovski DP. A role for Regulator of G protein Signaling-12 (RGS12) in the balance between myoblast proliferation and differentiation. PLoS One 2019; 14:e0216167. [PMID: 31408461 PMCID: PMC6691989 DOI: 10.1371/journal.pone.0216167] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2019] [Accepted: 04/15/2019] [Indexed: 12/28/2022] Open
Abstract
Regulators of G Protein Signaling (RGS proteins) inhibit G protein-coupled receptor (GPCR) signaling by accelerating the GTP hydrolysis rate of activated Gα subunits. Some RGS proteins exert additional signal modulatory functions, and RGS12 is one such protein, with five additional, functional domains: a PDZ domain, a phosphotyrosine-binding domain, two Ras-binding domains, and a Gα·GDP-binding GoLoco motif. RGS12 expression is temporospatially regulated in developing mouse embryos, with notable expression in somites and developing skeletal muscle. We therefore examined whether RGS12 is involved in the skeletal muscle myogenic program. In the adult mouse, RGS12 is expressed in the tibialis anterior (TA) muscle, and its expression is increased early after cardiotoxin-induced injury, suggesting a role in muscle regeneration. Consistent with a potential role in coordinating myogenic signals, RGS12 is also expressed in primary myoblasts; as these cells undergo differentiation and fusion into myotubes, RGS12 protein abundance is reduced. Myoblasts isolated from mice lacking Rgs12 expression have an impaired ability to differentiate into myotubes ex vivo, suggesting that RGS12 may play a role as a modulator/switch for differentiation. We also assessed the muscle regenerative capacity of mice conditionally deficient in skeletal muscle Rgs12 expression (via Pax7-driven Cre recombinase expression), following cardiotoxin-induced damage to the TA muscle. Eight days post-damage, mice lacking RGS12 in skeletal muscle had attenuated repair of muscle fibers. However, when mice lacking skeletal muscle expression of Rgs12 were cross-bred with mdx mice (a model of human Duchenne muscular dystrophy), no increase in muscle degeneration was observed over time. These data support the hypothesis that RGS12 plays a role in coordinating signals during the myogenic program in select circumstances, but loss of the protein may be compensated for within model syndromes of prolonged bouts of muscle damage and repair.
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Affiliation(s)
- Adam B. Schroer
- Department of Physiology & Pharmacology, WVU School of Medicine, West Virginia University, Morgantown, WV, United States of America
| | - Junaith S. Mohamed
- Division of Exercise Physiology, West Virginia University, Morgantown, WV, United States of America
| | - Melinda D. Willard
- Department of Pharmacology, The University of North Carolina, Chapel Hill, NC, United States of America
| | - Vincent Setola
- Department of Neuroscience, West Virginia University, Morgantown, WV, United States of America
| | - Emily Oestreich
- Department of Pharmacology, The University of North Carolina, Chapel Hill, NC, United States of America
- * E-mail: (EO); (DPS)
| | - David P. Siderovski
- Department of Physiology & Pharmacology, WVU School of Medicine, West Virginia University, Morgantown, WV, United States of America
- * E-mail: (EO); (DPS)
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9
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Myers MJ, Shepherd DL, Durr AJ, Stanton DS, Mohamed JS, Hollander JM, Alway SE. The role of SIRT1 in skeletal muscle function and repair of older mice. J Cachexia Sarcopenia Muscle 2019; 10:929-949. [PMID: 31197980 PMCID: PMC6711423 DOI: 10.1002/jcsm.12437] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/13/2018] [Accepted: 03/21/2019] [Indexed: 01/06/2023] Open
Abstract
BACKGROUND Sirtuin 1 (SIRT1) is a NAD+ sensitive deacetylase that has been linked to longevity and has been suggested to confer beneficial effects that counter aging-associated deterioration. Muscle repair is dependent upon satellite cell function, which is reported to be reduced with aging; however, it is not known if this is linked to an aging-suppression of SIRT1. This study tested the hypothesis that Sirtuin 1 (SIRT1) overexpression would increase the extent of muscle repair and muscle function in older mice. METHODS We examined satellite cell dependent repair in tibialis anterior, gastrocnemius, and soleus muscles of 13 young wild-type mice (20-30 weeks) and 49 older (80+ weeks) mice that were controls (n = 13), overexpressed SIRT1 in skeletal muscle (n = 14), and had a skeletal muscle SIRT1 knockout (n = 12) or a satellite cell SIRT1 knockout (n = 10). Acute muscle injury was induced by injection of cardiotoxin (CTX), and phosphate-buffered saline was used as a vector control. Plantarflexor muscle force and fatigue were evaluated before or 21 days after CTX injection. Satellite cell proliferation and mitochondrial function were also evaluated in undamaged muscles. RESULTS Maximal muscle force was significantly lower in control muscles of older satellite cell knockout SIRT1 mice compared to young adult wild-type (YWT) mice (P < 0.001). Mean contraction force at 40 Hz stimulation was significantly greater after recovery from CTX injury in older mice that overexpressed muscle SIRT1 than age-matched SIRT1 knockout mice (P < 0.05). SIRT1 muscle knockout models (P < 0.05) had greater levels of p53 (P < 0.05 MKO, P < 0.001 OE) in CTX-damaged tissues as compared to YWT CTX mice. SIRT1 overexpression with co-expression of p53 was associated with increased fatigue resistance and increased force potentiation during repeated contractions as compared to wild-type or SIRT1 knockout models (P < 0.001). Muscle structure and mitochondrial function were not different between the groups, but proliferation of satellite cells was significantly greater in older mice with SIRT1 muscle knockout (P < 0.05), but not older SIRT1 satellite cell knockout models, in vitro, although this effect was attenuated in vivo after 21 days of recovery. CONCLUSIONS The data suggest skeletal muscle structure, function, and recovery after CTX-induced injury are not significantly influenced by gain or loss of SIRT1 abundance alone in skeletal muscle; however, muscle function is impaired by ablation of SIRT1 in satellite cells. SIRT1 appears to interact with p53 to improve muscle fatigue resistance after repair from muscle injury.
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Affiliation(s)
- Matthew J. Myers
- Laboratory of Muscle Biology and SarcopeniaWest Virginia University School of MedicineMorgantownUSA
| | - Danielle L. Shepherd
- Division of Exercise Physiology and Center for Cardiovascular and Respiratory SciencesWest Virginia University School of MedicineMorgantownUSA
| | - Andrya J. Durr
- Division of Exercise Physiology and Center for Cardiovascular and Respiratory SciencesWest Virginia University School of MedicineMorgantownUSA
| | - David S. Stanton
- Laboratory of Muscle Biology and SarcopeniaWest Virginia University School of MedicineMorgantownUSA
| | - Junaith S. Mohamed
- Laboratory of Muscle Biology and SarcopeniaWest Virginia University School of MedicineMorgantownUSA
- Laboratory of Nerve and Muscle, Department of Clinical Laboratory Sciences, College of Health ProfessionsUniversity of Tennessee Health Science CenterMemphisUSA
| | - John M. Hollander
- Division of Exercise Physiology and Center for Cardiovascular and Respiratory SciencesWest Virginia University School of MedicineMorgantownUSA
| | - Stephen E. Alway
- Laboratory of Muscle Biology and SarcopeniaWest Virginia University School of MedicineMorgantownUSA
- Laboratory of Muscle Biology and Sarcopenia, Department of Physical Therapy, College of Health ProfessionsUniversity of Tennessee Health Science CenterMemphisUSA
- Department of Physiology, College of MedicineUniversity of Tennessee Health Science CenterMemphisUSA
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Hayashi S, Yonekura S. Thermal stimulation at 39°C facilitates the fusion and elongation of C2C12 myoblasts. Anim Sci J 2019; 90:1008-1017. [DOI: 10.1111/asj.13227] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2018] [Revised: 03/11/2019] [Accepted: 04/09/2019] [Indexed: 12/17/2022]
Affiliation(s)
- Satoko Hayashi
- Graduate School of Science and Technology Shinshu University Kamiina Japan
| | - Shinichi Yonekura
- Graduate School of Science and Technology Shinshu University Kamiina Japan
- Department of Interdisciplinary Genome Sciences and Cell Metabolism Institute for Biomedical Sciences Interdisciplinary Cluster for Cutting Edge Research, Shinshu University Kamiina Japan
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Fiorino C, Harrison RE. E-cadherin is important for cell differentiation during osteoclastogenesis. Bone 2016; 86:106-18. [PMID: 26959175 DOI: 10.1016/j.bone.2016.03.004] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/03/2015] [Revised: 01/29/2016] [Accepted: 03/04/2016] [Indexed: 01/05/2023]
Abstract
E-cadherin, a protein responsible for intercellular adhesion between epithelial cells, is also expressed in the monocyte/macrophage lineage. In this study we have explored the involvement of E-cadherin during receptor activator of nuclear factor-κB ligand (RANKL)-stimulated osteoclast differentiation. Osteoclastogenesis involves a period of precursor expansion followed by multiple fusion events to generate a multinuclear osteoclast that is capable of bone resorption. We asked whether E-cadherin participated in early precursor interactions and recognition or was a component of the osteoclast fusion machinery. Here, we show that endogenous E-cadherin expression is the highest during early stages of osteoclast differentiation, with surface expression visible on small precursor cells (fewer than four nuclei per cell) in both RAW 264.7 cells and primary macrophages. Blocking E-cadherin function with neutralizing antibodies prior to the onset of fusion delayed the expression of TRAP, Cathepsin K, DC-STAMP and NFATc1 and significantly diminished multinucleated osteoclast formation. Conversely, E-cadherin-GFP overexpressing macrophages displayed earlier NFATc1 nuclear translocation along with faster formation of multinucleated osteoclasts compared to control macrophages. Through live imaging we identified that disrupting E-cadherin function prolonged the proliferative phase of the precursor population while concomitantly decreasing the proportion of migrating precursors. The lamellipodium and polarized membrane extensions appeared to be the principal sites of fusion, indicating precursor migration was a critical factor contributing to osteoclast fusion. These findings demonstrate that E-cadherin-mediated cell-cell contacts can modulate osteoclast-specific gene expression and prompt differentiating osteoclast precursors toward migratory and fusion activities.
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Affiliation(s)
- Cara Fiorino
- Department of Cell & Systems Biology, University of Toronto, Toronto, Ontario M1C 1A4, Canada; Department of Biological Sciences, University of Toronto Scarborough, Toronto, Ontario M1C 1A4, Canada
| | - Rene E Harrison
- Department of Cell & Systems Biology, University of Toronto, Toronto, Ontario M1C 1A4, Canada; Department of Biological Sciences, University of Toronto Scarborough, Toronto, Ontario M1C 1A4, Canada.
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Bennett BT, Mohamed JS, Alway SE. Effects of resveratrol on the recovery of muscle mass following disuse in the plantaris muscle of aged rats. PLoS One 2013; 8:e83518. [PMID: 24349525 PMCID: PMC3861503 DOI: 10.1371/journal.pone.0083518] [Citation(s) in RCA: 78] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2013] [Accepted: 11/05/2013] [Indexed: 12/19/2022] Open
Abstract
Aging is associated with poor skeletal muscle regenerative ability following extended periods of hospitalization and other forms of muscular disuse. Resveratrol (3,5,4’-trihydroxystilbene) is a natural phytoalexin which has been shown in skeletal muscle to improve oxidative stress levels in muscles of aged rats. As muscle disuse and reloading after disuse increases oxidative stress, we hypothesized that resveratrol supplementation would improve muscle regeneration after disuse. A total of thirty-six male Fisher 344 × Brown Norway rats (32 mo.) were treated with either a water vehicle or resveratrol via oral gavage. The animals received hindlimb suspension for 14 days. Thereafter, they were either sacrificed or allowed an additional 14 day period of cage ambulation during reloading. A total of six rats from the vehicle and the resveratrol treated groups were used for the hindlimb suspension and recovery protocols. Furthermore, two groups of 6 vehicle treated animals maintained normal ambulation throughout the experiment, and were used as control animals for the hindlimb suspension and reloading groups. The data show that resveratrol supplementation was unable to attenuate the decreases in plantaris muscle wet weight during hindlimb suspension but it improved muscle mass during reloading after hindlimb suspension. Although resveratrol did not prevent fiber atrophy during the period of disuse, it increased the fiber cross sectional area of type IIA and IIB fibers in response to reloading after hindlimb suspension. There was a modest enhancement of myogenic precursor cell proliferation in resveratrol-treated muscles after reloading, but this failed to reach statistical significance. The resveratrol-associated improvement in type II fiber size and muscle mass recovery after disuse may have been due to decreases in the abundance of pro-apoptotic proteins Bax, cleaved caspase 3 and cleaved caspase 9 in reloaded muscles. Resveratrol appears to have modest therapeutic benefits for improving muscle mass after disuse in aging.
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Affiliation(s)
- Brian T. Bennett
- Laboratory of Muscle Biology and Sarcopenia Division of Exercise Physiology, West Virginia University School of Medicine, Morgantown, West Virginia, United States of America
- West Virginia Center for Clinical and Translational Science Institute, Morgantown, West Virginia, United States of America
| | - Junaith S. Mohamed
- Laboratory of Muscle Biology and Sarcopenia Division of Exercise Physiology, West Virginia University School of Medicine, Morgantown, West Virginia, United States of America
- West Virginia Center for Clinical and Translational Science Institute, Morgantown, West Virginia, United States of America
| | - Stephen E. Alway
- Laboratory of Muscle Biology and Sarcopenia Division of Exercise Physiology, West Virginia University School of Medicine, Morgantown, West Virginia, United States of America
- West Virginia Center for Clinical and Translational Science Institute, Morgantown, West Virginia, United States of America
- Center for Cardiovascular, and Respiratory Sciences, West Virginia University School of Medicine, Morgantown, West Virginia, United States of America
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Alway SE, Pereira SL, Edens NK, Hao Y, Bennett BT. β-Hydroxy-β-methylbutyrate (HMB) enhances the proliferation of satellite cells in fast muscles of aged rats during recovery from disuse atrophy. Exp Gerontol 2013; 48:973-84. [DOI: 10.1016/j.exger.2013.06.005] [Citation(s) in RCA: 71] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2013] [Revised: 06/04/2013] [Accepted: 06/23/2013] [Indexed: 01/06/2023]
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Interaction of Wnt Signaling with BMP/Smad Signaling during the Transition from Cell Proliferation to Myogenic Differentiation in Mouse Myoblast-Derived Cells. Int J Cell Biol 2013; 2013:616294. [PMID: 23864860 PMCID: PMC3705783 DOI: 10.1155/2013/616294] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2013] [Accepted: 06/03/2013] [Indexed: 11/17/2022] Open
Abstract
Background. Wnt signaling is involved in muscle formation through β-catenin-dependent or -independent pathways, but interactions with other signaling pathways including transforming growth factor β/Smad have not been precisely elucidated. Results. As Wnt4 stimulates myogenic differentiation by antagonizing myostatin (GDF8) activity, we examined the role of Wnt4 signaling during muscle differentiation in the C2C12 myoblast cell line. Among several extrinsic signaling molecules examined in a microarray analysis of C2C12 cells during the transition from cell proliferation to differentiation after mitogen deprivation, bone morphogenetic protein 4 (BMP4) expression was prominently increased. Wnt4 overexpression had similar effects on BMP4 expression. BMP4 was able to inhibit muscle differentiation when added to the culture medium. BMP4 and noggin had no effects on the cellular localization of β-catenin induced by Wnt3a; however, the BMP4-induced phosphorylation of Smad1/5/8 was enhanced by Wnt4, but not by Wnt3a. The BMP antagonist noggin effectively stimulated muscle differentiation through binding to endogenous BMPs, and the effect of noggin was enhanced by the presence of Wnt3a and Wnt4. Conclusion. These results suggest that BMP/Smad pathways are modified through Wnt signaling during the transition from progenitor cell proliferation to myogenic differentiation, although Wnt/β-catenin signaling is not modified with BMP/Smad signaling.
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