1
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Tam LM, Rand MD. Review: myogenic and muscle toxicity targets of environmental methylmercury exposure. Arch Toxicol 2024; 98:1645-1658. [PMID: 38546836 PMCID: PMC11105986 DOI: 10.1007/s00204-024-03724-3] [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: 12/12/2023] [Accepted: 02/29/2024] [Indexed: 05/01/2024]
Abstract
A number of environmental toxicants are noted for their activity that leads to declined motor function. However, the role of muscle as a proximal toxicity target organ for environmental agents has received considerably less attention than the toxicity targets in the nervous system. Nonetheless, the effects of conventional neurotoxicants on processes of myogenesis and muscle maintenance are beginning to resolve a concerted role of muscle as a susceptible toxicity target. A large body of evidence from epidemiological, animal, and in vitro studies has established that methylmercury (MeHg) is a potent developmental toxicant, with the nervous system being a preferred target. Despite its well-recognized status as a neurotoxicant, there is accumulating evidence that MeHg also targets muscle and neuromuscular development as well as contributes to the etiology of motor defects with prenatal MeHg exposure. Here, we summarize evidence for targets of MeHg in the morphogenesis and maintenance of skeletal muscle that reveal effects on MeHg distribution, myogenesis, myotube formation, myotendinous junction formation, neuromuscular junction formation, and satellite cell-mediated muscle repair. We briefly recapitulate the molecular and cellular mechanisms of skeletal muscle development and highlight the pragmatic role of alternative model organisms, Drosophila and zebrafish, in delineating the molecular underpinnings of muscle development and MeHg-mediated myotoxicity. Finally, we discuss how toxicity targets in muscle development may inform the developmental origins of health and disease theory to explain the etiology of environmentally induced adult motor deficits and accelerated decline in muscle fitness with aging.
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Affiliation(s)
- Lok Ming Tam
- Department of Environmental Medicine, University of Rochester School of Medicine and Dentistry, 601 Elmwood Ave, Rochester, NY, 14642, USA.
- Clinical and Translational Science Institute, University of Rochester Medical Center, 601 Elmwood Ave, Rochester, NY, 14642, USA.
| | - Matthew D Rand
- Department of Environmental Medicine, University of Rochester School of Medicine and Dentistry, 601 Elmwood Ave, Rochester, NY, 14642, USA
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2
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Yin Y, He GJ, Hu S, Tse EHY, Cheung TH. Muscle stem cell niche dynamics during muscle homeostasis and regeneration. Curr Top Dev Biol 2024; 158:151-177. [PMID: 38670704 DOI: 10.1016/bs.ctdb.2024.02.008] [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
The process of skeletal muscle regeneration involves a coordinated interplay of specific cellular and molecular interactions within the injury site. This review provides an overview of the cellular and molecular components in regenerating skeletal muscle, focusing on how these cells or molecules in the niche regulate muscle stem cell functions. Dysfunctions of muscle stem cell-to-niche cell communications during aging and disease will also be discussed. A better understanding of how niche cells coordinate with muscle stem cells for muscle repair will greatly aid the development of therapeutic strategies for treating muscle-related disorders.
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Affiliation(s)
- Yishu Yin
- Division of Life Science, Center for Stem Cell Research, HKUST-Nan Fung Life Sciences Joint Laboratory, State Key Laboratory of Molecular Neuroscience, Molecular Neuroscience Center, The Hong Kong University of Science and Technology, Hong Kong, P.R. China
| | - Gary J He
- Hong Kong Center for Neurodegenerative Diseases, Hong Kong, P.R. China
| | - Shenyuan Hu
- Division of Life Science, Center for Stem Cell Research, HKUST-Nan Fung Life Sciences Joint Laboratory, State Key Laboratory of Molecular Neuroscience, Molecular Neuroscience Center, The Hong Kong University of Science and Technology, Hong Kong, P.R. China
| | - Erin H Y Tse
- Division of Life Science, Center for Stem Cell Research, HKUST-Nan Fung Life Sciences Joint Laboratory, State Key Laboratory of Molecular Neuroscience, Molecular Neuroscience Center, The Hong Kong University of Science and Technology, Hong Kong, P.R. China; Hong Kong Center for Neurodegenerative Diseases, Hong Kong, P.R. China
| | - Tom H Cheung
- Division of Life Science, Center for Stem Cell Research, HKUST-Nan Fung Life Sciences Joint Laboratory, State Key Laboratory of Molecular Neuroscience, Molecular Neuroscience Center, The Hong Kong University of Science and Technology, Hong Kong, P.R. China; Hong Kong Center for Neurodegenerative Diseases, Hong Kong, P.R. China; Guangdong Provincial Key Laboratory of Brain Science, Disease and Drug Development, Shenzhen-Hong Kong Institute of Brain Science, HKUST Shenzhen Research Institute, Shenzhen, P.R. China.
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3
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Helzer D, Kannan P, Reynolds JC, Gibbs DE, Crosbie RH. Role of microenvironment on muscle stem cell function in health, adaptation, and disease. Curr Top Dev Biol 2024; 158:179-201. [PMID: 38670705 DOI: 10.1016/bs.ctdb.2024.02.002] [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
The role of the cellular microenvironment has recently gained attention in the context of muscle health, adaption, and disease. Emerging evidence supports major roles for the extracellular matrix (ECM) in regeneration and the dynamic regulation of the satellite cell niche. Satellite cells normally reside in a quiescent state in healthy muscle, but upon muscle injury, they activate, proliferate, and fuse to the damaged fibers to restore muscle function and architecture. This chapter reviews the composition and mechanical properties of skeletal muscle ECM and the role of these factors in contributing to the satellite cell niche that impact muscle regeneration. In addition, the chapter details the effects of satellite cell-matrix interactions and provides evidence that there is bidirectional regulation affecting both the cellular and extracellular microenvironment within skeletal muscle. Lastly, emerging methods to investigate satellite cell-matrix interactions will be presented.
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Affiliation(s)
- Daniel Helzer
- Department of Integrative Biology and Physiology, University of California, Los Angeles, Los Angeles, CA, United States
| | - Pranav Kannan
- Department of Integrative Biology and Physiology, University of California, Los Angeles, Los Angeles, CA, United States
| | - Joseph C Reynolds
- Department of Integrative Biology and Physiology, University of California, Los Angeles, Los Angeles, CA, United States
| | - Devin E Gibbs
- Department of Integrative Biology and Physiology, University of California, Los Angeles, Los Angeles, CA, United States; Molecular Biology Institute, University of California, Los Angeles, Los Angeles, CA, United States
| | - Rachelle H Crosbie
- Department of Integrative Biology and Physiology, University of California, Los Angeles, Los Angeles, CA, United States; Molecular Biology Institute, University of California, Los Angeles, Los Angeles, CA, United States; Eli and Edythe Broad Center of Regenerative Medicine and Stem Cell Research, University of California, Los Angeles, Los Angeles, CA, United States; Department of Neurology, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA, United States.
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4
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Metti S, Da Ros F, Toniato G, Cescon M, Bonaldo P. Native collagen VI delays early muscle stem cell differentiation. J Cell Sci 2024; 137:jcs261419. [PMID: 38224152 PMCID: PMC10911284 DOI: 10.1242/jcs.261419] [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: 06/17/2023] [Accepted: 01/05/2024] [Indexed: 01/16/2024] Open
Abstract
Adult muscle stem cells (MuSCs) are critical for muscle homeostasis and regeneration, and their behavior relies on a finely regulated niche made of specific extracellular matrix (ECM) components and soluble factors. Among ECM proteins, collagen VI (Col6) influences the mechanical properties of the niche and, in turn, MuSC self-renewal capabilities. Here, we investigated whether Col6 can exert a direct function as a biochemical signal for regulating the stemness and differentiation of murine MuSCs and myoblasts. Native Col6, but not its pepsin-resistant fragment, counteracts the early differentiation of myogenic cells by reducing the expression of differentiation marker genes and preserving stemness features, with inhibition of the canonical Wnt pathway. Our data indicate that extracellular Col6 acts as a soluble ligand in delaying early myogenic differentiation by regulating intracellular signals involved in adult myogenesis.
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Affiliation(s)
- Samuele Metti
- Department of Molecular Medicine, University of Padova, 35131 Padova, Italy
| | - Francesco Da Ros
- Department of Molecular Medicine, University of Padova, 35131 Padova, Italy
| | - Giorgia Toniato
- Department of Molecular Medicine, University of Padova, 35131 Padova, Italy
| | - Matilde Cescon
- Department of Molecular Medicine, University of Padova, 35131 Padova, Italy
| | - Paolo Bonaldo
- Department of Molecular Medicine, University of Padova, 35131 Padova, Italy
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Yılmaz D, Mathavan N, Wehrle E, Kuhn GA, Müller R. Mouse models of accelerated aging in musculoskeletal research for assessing frailty, sarcopenia, and osteoporosis - A review. Ageing Res Rev 2024; 93:102118. [PMID: 37935249 DOI: 10.1016/j.arr.2023.102118] [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: 07/03/2023] [Revised: 10/01/2023] [Accepted: 11/03/2023] [Indexed: 11/09/2023]
Abstract
Musculoskeletal aging encompasses the decline in bone and muscle function, leading to conditions such as frailty, osteoporosis, and sarcopenia. Unraveling the underlying molecular mechanisms and developing effective treatments are crucial for improving the quality of life for those affected. In this context, accelerated aging models offer valuable insights into these conditions by displaying the hallmarks of human aging. Herein, this review focuses on relevant mouse models of musculoskeletal aging with particular emphasis on frailty, osteoporosis, and sarcopenia. Among the discussed models, PolgA mice in particular exhibit hallmarks of musculoskeletal aging, presenting early-onset frailty, as well as reduced bone and muscle mass that closely resemble human musculoskeletal aging. Ultimately, findings from these models hold promise for advancing interventions targeted at age-related musculoskeletal disorders, effectively addressing the challenges posed by musculoskeletal aging and associated conditions in humans.
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Affiliation(s)
- Dilara Yılmaz
- Institute for Biomechanics, ETH Zurich, Zurich, Switzerland
| | | | - Esther Wehrle
- Institute for Biomechanics, ETH Zurich, Zurich, Switzerland; AO Research Institute Davos, Davos Platz, Switzerland
| | - Gisela A Kuhn
- Institute for Biomechanics, ETH Zurich, Zurich, Switzerland
| | - Ralph Müller
- Institute for Biomechanics, ETH Zurich, Zurich, Switzerland.
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Ito Y, Yamagata M, Yamamoto T, Hirasaka K, Nikawa T, Sato T. The reciprocal regulation between mitochondrial-associated membranes and Notch signaling in skeletal muscle atrophy. eLife 2023; 12:RP89381. [PMID: 38099641 PMCID: PMC10723794 DOI: 10.7554/elife.89381] [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: 12/17/2023] Open
Abstract
Skeletal muscle atrophy and the inhibition of muscle regeneration are known to occur as a natural consequence of aging, yet the underlying mechanisms that lead to these processes in atrophic myofibers remain largely unclear. Our research has revealed that the maintenance of proper mitochondrial-associated endoplasmic reticulum membranes (MAM) is vital for preventing skeletal muscle atrophy in microgravity environments. We discovered that the deletion of the mitochondrial fusion protein Mitofusin2 (MFN2), which serves as a tether for MAM, in human induced pluripotent stem (iPS) cells or the reduction of MAM in differentiated myotubes caused by microgravity interfered with myogenic differentiation process and an increased susceptibility to muscle atrophy, as well as the activation of the Notch signaling pathway. The atrophic phenotype of differentiated myotubes in microgravity and the regenerative capacity of Mfn2-deficient muscle stem cells in dystrophic mice were both ameliorated by treatment with the gamma-secretase inhibitor DAPT. Our findings demonstrate how the orchestration of mitochondrial morphology in differentiated myotubes and regenerating muscle stem cells plays a crucial role in regulating Notch signaling through the interaction of MAM.
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Affiliation(s)
- Yurika Ito
- Faculty of Medical Sciences, Fujita Health UniversityToyoakeJapan
| | - Mari Yamagata
- Department of Biomedical Engineering, Faculty of Life and Medical Sciences, Doshisha UniversityKyotanabeJapan
| | - Takuya Yamamoto
- Center for iPS Cell Research and Application, Kyoto UniversityKyotoJapan
- Institute for the Advanced Study of Human Biology (WPI-ASHBi), Kyoto UniversityKyotoJapan
- Medical-risk Avoidance based on iPS Cells Team, RIKEN Center for Advanced Intelligence Project (AIP)KyotoJapan
| | - Katsuya Hirasaka
- Organization for Marine Science and Technology, Nagasaki University Graduate SchoolNagasakiJapan
| | - Takeshi Nikawa
- Department of Nutritional Physiology, Institute of Medical Nutrition, Tokushima University Graduate SchoolTokushimaJapan
| | - Takahiko Sato
- Department of Ophthalmology, Kyoto Prefectural University of MedicineKyotoJapan
- Department of Anatomy, Faculty of Medicine, Fujita Health UniversityToyoakeJapan
- International Center for Cell and Gene Therapy, Fujita Health UniversityToyoakeJapan
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Yu M, Thorner K, Parameswaran S, Wei W, Yu C, Lin X, Kopan R, Hass MR. The unique function of Runx1 in skeletal muscle differentiation and regeneration is mediated by an ETS interaction domain. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.11.21.568117. [PMID: 38045385 PMCID: PMC10690193 DOI: 10.1101/2023.11.21.568117] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/05/2023]
Abstract
The conserved Runt-related (RUNX) transcription factor family are well-known master regulators of developmental and regenerative processes. Runx1 and Runx2 are both expressed in satellite cells (SC) and skeletal myotubes. Conditional deletion of Runx1 in adult SC negatively impacted self-renewal and impaired skeletal muscle maintenance. Runx1- deficient SC retain Runx2 expression but cannot support muscle regeneration in response to injury. To determine the unique molecular functions of Runx1 that cannot be compensated by Runx2 we deleted Runx1 in C2C12 that retain Runx2 expression and established that myoblasts differentiation was blocked in vitro due in part to ectopic expression of Mef2c, a target repressed by Runx1 . Structure-function analysis demonstrated that the Ets-interacting MID/EID region of Runx1, absent from Runx2, is critical to regulating myoblasts proliferation, differentiation, and fusion. Analysis of in-house and published ChIP-seq datasets from Runx1 (T-cells, muscle) versus Runx2 (preosteoblasts) dependent tissue identified enrichment for a Ets:Runx composite site in Runx1 -dependent tissues. Comparing ATACseq datasets from WT and Runx1KO C2C12 cells showed that the Ets:Runx composite motif was enriched in peaks open exclusively in WT cells compared to peaks unique to Runx1KO cells. Thus, engagement of a set of targets by the RUNX1/ETS complex define the non-redundant functions of Runx1 .
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Oprescu SN, Baumann N, Chen X, Sun Q, Zhao Y, Yue F, Wang H, Kuang S. Sox11 is enriched in myogenic progenitors but dispensable for development and regeneration of the skeletal muscle. Skelet Muscle 2023; 13:15. [PMID: 37705115 PMCID: PMC10498607 DOI: 10.1186/s13395-023-00324-0] [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: 03/09/2023] [Accepted: 08/24/2023] [Indexed: 09/15/2023] Open
Abstract
Transcription factors (TFs) play key roles in regulating differentiation and function of stem cells, including muscle satellite cells (MuSCs), a resident stem cell population responsible for postnatal regeneration of the skeletal muscle. Sox11 belongs to the Sry-related HMG-box (SOX) family of TFs that play diverse roles in stem cell behavior and tissue specification. Analysis of single-cell RNA-sequencing (scRNA-seq) datasets identify a specific enrichment of Sox11 mRNA in differentiating but not quiescent MuSCs. Consistent with the scRNA-seq data, Sox11 levels increase during differentiation of murine primary myoblasts in vitro. scRNA-seq data comparing muscle regeneration in young and old mice further demonstrate that Sox11 expression is reduced in aged MuSCs. Age-related decline of Sox11 expression is associated with reduced chromatin contacts within the topologically associating domains. Unexpectedly, Myod1Cre-driven deletion of Sox11 in embryonic myoblasts has no effects on muscle development and growth, resulting in apparently healthy muscles that regenerate normally. Pax7CreER- or Rosa26CreER- driven (MuSC-specific or global) deletion of Sox11 in adult mice similarly has no effects on MuSC differentiation or muscle regeneration. These results identify Sox11 as a novel myogenic differentiation marker with reduced expression in quiescent and aged MuSCs, but the specific function of Sox11 in myogenesis remains to be elucidated.
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Affiliation(s)
- Stephanie N Oprescu
- Department of Biological Sciences, Purdue University, West Lafayette, IN, 47907, USA
| | - Nick Baumann
- Department of Biological Sciences, Purdue University, West Lafayette, IN, 47907, USA
| | - Xiyue Chen
- Department of Animal Sciences, Purdue University, West Lafayette, IN, 47907, USA
| | - Qiang Sun
- Department of Orthopedics and Traumatology, Li Ka Shing Institute of Health Sciences, The Chinese University of Hong Kong; Center for Neuromusculoskeletal Restorative Medicine, Hong Kong Science Park, Hong Kong, China
| | - Yu Zhao
- Department of Orthopedics and Traumatology, Li Ka Shing Institute of Health Sciences, The Chinese University of Hong Kong; Center for Neuromusculoskeletal Restorative Medicine, Hong Kong Science Park, Hong Kong, China
| | - Feng Yue
- Department of Animal Sciences, Purdue University, West Lafayette, IN, 47907, USA
| | - Huating Wang
- Department of Orthopedics and Traumatology, Li Ka Shing Institute of Health Sciences, The Chinese University of Hong Kong; Center for Neuromusculoskeletal Restorative Medicine, Hong Kong Science Park, Hong Kong, China
| | - Shihuan Kuang
- Department of Biological Sciences, Purdue University, West Lafayette, IN, 47907, USA.
- Department of Animal Sciences, Purdue University, West Lafayette, IN, 47907, USA.
- Center for Cancer Research, Purdue University, West Lafayette, IN, 47907, USA.
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Rahman NIA, Lam CL, Sulaiman N, Abdullah NAH, Nordin F, Ariffin SHZ, Yazid MD. PAX7, a Key for Myogenesis Modulation in Muscular Dystrophies through Multiple Signaling Pathways: A Systematic Review. Int J Mol Sci 2023; 24:13051. [PMID: 37685856 PMCID: PMC10487808 DOI: 10.3390/ijms241713051] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2023] [Revised: 08/11/2023] [Accepted: 08/11/2023] [Indexed: 09/10/2023] Open
Abstract
Muscular dystrophy is a heterogenous group of hereditary muscle disorders caused by mutations in the genes responsible for muscle development, and is generally defined by a disastrous progression of muscle wasting and massive loss in muscle regeneration. Pax7 is closely associated with myogenesis, which is governed by various signaling pathways throughout a lifetime and is frequently used as an indicator in muscle research. In this review, an extensive literature search adhering to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines was performed to identify research that examined signaling pathways in living models, while quantifying Pax7 expression in myogenesis. A total of 247 articles were retrieved from the Web of Science (WoS), PubMed and Scopus databases and were thoroughly examined and evaluated, resulting in 19 articles which met the inclusion criteria. Admittedly, we were only able to discuss the quantification of Pax7 carried out in research affecting various type of genes and signaling pathways, rather than the expression of Pax7 itself, due to the massive differences in approach, factor molecules and signaling pathways analyzed across the research. However, we highlighted the thorough evidence for the alteration of the muscle stem cell precursor Pax7 in multiple signaling pathways described in different living models, with an emphasis on the novel approach that could be taken in manipulating Pax7 expression itself in dystrophic muscle, towards the discovery of an effective treatment for muscular dystrophy. Therefore, we believe that this could be applied to the potential gap in muscle research that could be filled by tuning the well-established marker expression to improve dystrophic muscle.
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Affiliation(s)
- Nor Idayu A. Rahman
- Centre for Tissue Engineering & Regenerative Medicine, Faculty of Medicine, Universiti Kebangsaan Malaysia Medical Centre, Jalan Yaacob Latif, Cheras, Kuala Lumpur 56000, Malaysia; (N.I.A.R.)
| | - Chung Liang Lam
- Centre for Tissue Engineering & Regenerative Medicine, Faculty of Medicine, Universiti Kebangsaan Malaysia Medical Centre, Jalan Yaacob Latif, Cheras, Kuala Lumpur 56000, Malaysia; (N.I.A.R.)
| | - Nadiah Sulaiman
- Centre for Tissue Engineering & Regenerative Medicine, Faculty of Medicine, Universiti Kebangsaan Malaysia Medical Centre, Jalan Yaacob Latif, Cheras, Kuala Lumpur 56000, Malaysia; (N.I.A.R.)
| | - Nur Atiqah Haizum Abdullah
- Centre for Tissue Engineering & Regenerative Medicine, Faculty of Medicine, Universiti Kebangsaan Malaysia Medical Centre, Jalan Yaacob Latif, Cheras, Kuala Lumpur 56000, Malaysia; (N.I.A.R.)
| | - Fazlina Nordin
- Centre for Tissue Engineering & Regenerative Medicine, Faculty of Medicine, Universiti Kebangsaan Malaysia Medical Centre, Jalan Yaacob Latif, Cheras, Kuala Lumpur 56000, Malaysia; (N.I.A.R.)
| | - Shahrul Hisham Zainal Ariffin
- Centre of Biotechnology & Functional Food, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, Bangi 43600, Malaysia
| | - Muhammad Dain Yazid
- Centre for Tissue Engineering & Regenerative Medicine, Faculty of Medicine, Universiti Kebangsaan Malaysia Medical Centre, Jalan Yaacob Latif, Cheras, Kuala Lumpur 56000, Malaysia; (N.I.A.R.)
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Dubuisson N, Versele R, Davis-López de Carrizosa MA, Selvais CM, Noel L, Planchon C, Van den Bergh PYK, Brichard SM, Abou-Samra M. The Adiponectin Receptor Agonist, ALY688: A Promising Therapeutic for Fibrosis in the Dystrophic Muscle. Cells 2023; 12:2101. [PMID: 37626911 PMCID: PMC10453606 DOI: 10.3390/cells12162101] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Revised: 08/11/2023] [Accepted: 08/17/2023] [Indexed: 08/27/2023] Open
Abstract
Duchenne muscular dystrophy (DMD) is one of the most devastating myopathies, where severe inflammation exacerbates disease progression. Previously, we demonstrated that adiponectin (ApN), a hormone with powerful pleiotropic effects, can efficiently improve the dystrophic phenotype. However, its practical therapeutic application is limited. In this study, we investigated ALY688, a small peptide ApN receptor agonist, as a potential novel treatment for DMD. Four-week-old mdx mice were subcutaneously treated for two months with ALY688 and then compared to untreated mdx and wild-type mice. In vivo and ex vivo tests were performed to assess muscle function and pathophysiology. Additionally, in vitro tests were conducted on human DMD myotubes. Our results showed that ALY688 significantly improved the physical performance of mice and exerted potent anti-inflammatory, anti-oxidative and anti-fibrotic actions on the dystrophic muscle. Additionally, ALY688 hampered myonecrosis, partly mediated by necroptosis, and enhanced the myogenic program. Some of these effects were also recapitulated in human DMD myotubes. ALY688's protective and beneficial properties were mainly mediated by the AMPK-PGC-1α axis, which led to suppression of NF-κβ and TGF-β. Our results demonstrate that an ApN mimic may be a promising and effective therapeutic prospect for a better management of DMD.
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Affiliation(s)
- Nicolas Dubuisson
- Endocrinology, Diabetes and Nutrition Unit, Institute of Experimental and Clinical Research (IREC), Medical Sector, Université Catholique de Louvain (UCLouvain), Avenue Hippocrate 55, 1200 Brussels, Belgium; (N.D.); (R.V.); (M.A.D.-L.d.C.); (C.M.S.); (L.N.); (C.P.); (S.M.B.)
- Neuromuscular Reference Center, Department of Neurology, Cliniques Universitaires Saint-Luc, Avenue Hippocrate 10, 1200 Brussels, Belgium;
| | - Romain Versele
- Endocrinology, Diabetes and Nutrition Unit, Institute of Experimental and Clinical Research (IREC), Medical Sector, Université Catholique de Louvain (UCLouvain), Avenue Hippocrate 55, 1200 Brussels, Belgium; (N.D.); (R.V.); (M.A.D.-L.d.C.); (C.M.S.); (L.N.); (C.P.); (S.M.B.)
| | - Maria A. Davis-López de Carrizosa
- Endocrinology, Diabetes and Nutrition Unit, Institute of Experimental and Clinical Research (IREC), Medical Sector, Université Catholique de Louvain (UCLouvain), Avenue Hippocrate 55, 1200 Brussels, Belgium; (N.D.); (R.V.); (M.A.D.-L.d.C.); (C.M.S.); (L.N.); (C.P.); (S.M.B.)
- Departamento de Fisiología, Facultad de Biología, Universidad de Sevilla, 41012 Seville, Spain
| | - Camille M. Selvais
- Endocrinology, Diabetes and Nutrition Unit, Institute of Experimental and Clinical Research (IREC), Medical Sector, Université Catholique de Louvain (UCLouvain), Avenue Hippocrate 55, 1200 Brussels, Belgium; (N.D.); (R.V.); (M.A.D.-L.d.C.); (C.M.S.); (L.N.); (C.P.); (S.M.B.)
| | - Laurence Noel
- Endocrinology, Diabetes and Nutrition Unit, Institute of Experimental and Clinical Research (IREC), Medical Sector, Université Catholique de Louvain (UCLouvain), Avenue Hippocrate 55, 1200 Brussels, Belgium; (N.D.); (R.V.); (M.A.D.-L.d.C.); (C.M.S.); (L.N.); (C.P.); (S.M.B.)
| | - Chloé Planchon
- Endocrinology, Diabetes and Nutrition Unit, Institute of Experimental and Clinical Research (IREC), Medical Sector, Université Catholique de Louvain (UCLouvain), Avenue Hippocrate 55, 1200 Brussels, Belgium; (N.D.); (R.V.); (M.A.D.-L.d.C.); (C.M.S.); (L.N.); (C.P.); (S.M.B.)
| | - Peter Y. K. Van den Bergh
- Neuromuscular Reference Center, Department of Neurology, Cliniques Universitaires Saint-Luc, Avenue Hippocrate 10, 1200 Brussels, Belgium;
| | - Sonia M. Brichard
- Endocrinology, Diabetes and Nutrition Unit, Institute of Experimental and Clinical Research (IREC), Medical Sector, Université Catholique de Louvain (UCLouvain), Avenue Hippocrate 55, 1200 Brussels, Belgium; (N.D.); (R.V.); (M.A.D.-L.d.C.); (C.M.S.); (L.N.); (C.P.); (S.M.B.)
| | - Michel Abou-Samra
- Endocrinology, Diabetes and Nutrition Unit, Institute of Experimental and Clinical Research (IREC), Medical Sector, Université Catholique de Louvain (UCLouvain), Avenue Hippocrate 55, 1200 Brussels, Belgium; (N.D.); (R.V.); (M.A.D.-L.d.C.); (C.M.S.); (L.N.); (C.P.); (S.M.B.)
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11
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Mierzejewski B, Grabowska I, Michalska Z, Zdunczyk K, Zareba F, Irhashava A, Chrzaszcz M, Patrycy M, Streminska W, Janczyk-Ilach K, Koblowska M, Iwanicka-Nowicka R, Gromadka A, Kowalski K, Ciemerych MA, Brzoska E. SDF-1 and NOTCH signaling in myogenic cell differentiation: the role of miRNA10a, 425, and 5100. Stem Cell Res Ther 2023; 14:204. [PMID: 37582765 PMCID: PMC10426160 DOI: 10.1186/s13287-023-03429-x] [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: 09/27/2022] [Accepted: 07/25/2023] [Indexed: 08/17/2023] Open
Abstract
BACKGROUND Skeletal muscle regeneration is a complex process regulated by many cytokines and growth factors. Among the important signaling pathways regulating the myogenic cell identity are these involving SDF-1 and NOTCH. SDF-1 participates in cell mobilization and acts as an important chemoattractant. NOTCH, on the other hand, controls cell activation and myogenic determination of satellite cells. Knowledge about the interaction between SDF-1 and NOTCH signaling is limited. METHODS We analyzed two populations of myogenic cells isolated from mouse skeletal muscle, that is, myoblasts derived from satellite cells (SCs) and muscle interstitial progenitor cells (MIPCs). First, microRNA level changes in response to SDF-1 treatment were analyzed with next-generation sequencing (NGS). Second, myogenic cells, i.e., SC-derived myoblasts and MIPCs were transfected with miRNA mimics, selected on the basis of NGS results, or their inhibitors. Transcriptional changes, as well as proliferation, migration, and differentiation abilities of SC-derived myoblasts and MIPCs, were analyzed in vitro. Naive myogenic potential was assessed in vivo, using subcutaneous engrafts and analysis of cell contribution to regeneration of the skeletal muscles. RESULTS SDF-1 treatment led to down-regulation of miR10a, miR151, miR425, and miR5100 in myoblasts. Interestingly, miR10a, miR425, and miR5100 regulated the expression of factors involved in the NOTCH signaling pathway, including Dll1, Jag2, and NICD. Furthermore, miR10a, miR425, and miR5100 down-regulated the expression of factors involved in cell migration: Acta1, MMP12, and FAK, myogenic differentiation: Pax7, Myf5, Myod, Mef2c, Myog, Musk, and Myh3. However, these changes did not significantly affect myogenic cell migration or fusion either in vitro or in vivo, except when miR425 was overexpressed, or miR5100 inhibitor was used. These two molecules increased the fusion of MIPCs and myoblasts, respectively. Furthermore, miR425-transfected MIPC transplantation into injured skeletal muscle resulted in more efficient regeneration, compared to control cell transplantation. However, skeletal muscles that were injected with miR10a transfected myoblasts regenerated less efficiently. CONCLUSIONS SDF-1 down-regulates miR10a, miR425, and miR5100, what could affect NOTCH signaling, differentiation of myogenic cells, and their participation in skeletal muscle regeneration.
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Affiliation(s)
- Bartosz Mierzejewski
- Department of Cytology, Faculty of Biology, University of Warsaw, Miecznikowa 1 St, 02-096, Warsaw, Poland
| | - Iwona Grabowska
- Department of Cytology, Faculty of Biology, University of Warsaw, Miecznikowa 1 St, 02-096, Warsaw, Poland
| | - Zuzanna Michalska
- Department of Cytology, Faculty of Biology, University of Warsaw, Miecznikowa 1 St, 02-096, Warsaw, Poland
| | - Kamila Zdunczyk
- Department of Cytology, Faculty of Biology, University of Warsaw, Miecznikowa 1 St, 02-096, Warsaw, Poland
| | - Franciszek Zareba
- Department of Cytology, Faculty of Biology, University of Warsaw, Miecznikowa 1 St, 02-096, Warsaw, Poland
| | - Aliksandra Irhashava
- Department of Cytology, Faculty of Biology, University of Warsaw, Miecznikowa 1 St, 02-096, Warsaw, Poland
| | - Marta Chrzaszcz
- Department of Cytology, Faculty of Biology, University of Warsaw, Miecznikowa 1 St, 02-096, Warsaw, Poland
| | - Magdalena Patrycy
- Department of Cytology, Faculty of Biology, University of Warsaw, Miecznikowa 1 St, 02-096, Warsaw, Poland
| | - Wladyslawa Streminska
- Department of Cytology, Faculty of Biology, University of Warsaw, Miecznikowa 1 St, 02-096, Warsaw, Poland
| | - Katarzyna Janczyk-Ilach
- Department of Cytology, Faculty of Biology, University of Warsaw, Miecznikowa 1 St, 02-096, Warsaw, Poland
| | - Marta Koblowska
- Laboratory of Systems Biology, Faculty of Biology, University of Warsaw, 02-096, Warsaw, Poland
- Laboratory of Microarray Analysis, Institute of Biochemistry and Biophysics, Polish Academy of Sciences, 02-106, Warsaw, Poland
| | - Roksana Iwanicka-Nowicka
- Laboratory of Systems Biology, Faculty of Biology, University of Warsaw, 02-096, Warsaw, Poland
- Laboratory of Microarray Analysis, Institute of Biochemistry and Biophysics, Polish Academy of Sciences, 02-106, Warsaw, Poland
| | - Agnieszka Gromadka
- Department of Bioinformatics, Institute of Biochemistry and Biophysics, Polish Academy of Sciences, 02-106, Warsaw, Poland
| | - Kamil Kowalski
- Department of Cytology, Faculty of Biology, University of Warsaw, Miecznikowa 1 St, 02-096, Warsaw, Poland
| | - Maria Anna Ciemerych
- Department of Cytology, Faculty of Biology, University of Warsaw, Miecznikowa 1 St, 02-096, Warsaw, Poland
| | - Edyta Brzoska
- Department of Cytology, Faculty of Biology, University of Warsaw, Miecznikowa 1 St, 02-096, Warsaw, Poland.
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Chen J, Yue F, Kim KH, Zhu P, Qiu J, Tao WA, Kuang S. FAM210A mediates an inter-organelle crosstalk essential for protein synthesis and muscle growth in mouse. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.08.03.551853. [PMID: 37577696 PMCID: PMC10418219 DOI: 10.1101/2023.08.03.551853] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/15/2023]
Abstract
Mitochondria are not only essential for energy production in eukaryocytes but also a key regulator of intracellular signaling. Here, we report an unappreciated role of mitochondria in regulating cytosolic protein translation in skeletal muscle cells (myofibers). We show that the expression of mitochondrial protein FAM210A (Family With Sequence Similarity 210 Member A) is positively associated with muscle mass in mice and humans. Muscle-specific Myl1Cre-driven Fam210a knockout (Fam210aMKO) in mice reduces mitochondrial density and function, leading to progressive muscle atrophy and premature death. Metabolomic and biochemical analyses reveal that Fam210aMKO reverses the oxidative TCA cycle towards the reductive direction, resulting in acetyl-CoA accumulation and hyperacetylation of cytosolic proteins. Specifically, hyperacetylation of several ribosomal proteins leads to disassembly of ribosomes and translational defects. Transplantation of Fam210aMKO mitochondria into wildtype myoblasts is sufficient to elevate protein acetylation in recipient cells. These findings reveal a novel crosstalk between the mitochondrion and ribosome mediated by FAM210A.
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Affiliation(s)
- Jingjuan Chen
- Department of Animal Sciences, Purdue University, West Lafayette, IN 47907, USA
| | - Feng Yue
- Department of Animal Sciences, Purdue University, West Lafayette, IN 47907, USA
- Department of Animal Sciences, University of Florida, Gainesville, FL 32611, USA
| | - Kun Ho Kim
- Department of Animal Sciences, Purdue University, West Lafayette, IN 47907, USA
| | - Peipei Zhu
- Department of Chemistry, Purdue University, West Lafayette, IN 47907, USA
| | - Jiamin Qiu
- Department of Animal Sciences, Purdue University, West Lafayette, IN 47907, USA
| | - W. Andy Tao
- Department of Chemistry, Purdue University, West Lafayette, IN 47907, USA
- Department of Biochemistry, Purdue University, West Lafayette, IN 47907, USA
- Purdue Institute for Cancer Research, West Lafayette, IN 47907, USA
| | - Shihuan Kuang
- Department of Animal Sciences, Purdue University, West Lafayette, IN 47907, USA
- Purdue Institute for Cancer Research, West Lafayette, IN 47907, USA
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13
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Kim KH, Jia Z, Snyder M, Chen J, Qiu J, Oprescu SN, Chen X, Syed SA, Yue F, Roseguini BT, Imbalzano AN, Hu C, Kuang S. PRMT5 links lipid metabolism to contractile function of skeletal muscles. EMBO Rep 2023; 24:e57306. [PMID: 37334900 PMCID: PMC10398672 DOI: 10.15252/embr.202357306] [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: 04/06/2023] [Revised: 05/30/2023] [Accepted: 06/05/2023] [Indexed: 06/21/2023] Open
Abstract
Skeletal muscle plays a key role in systemic energy homeostasis besides its contractile function, but what links these functions is poorly defined. Protein Arginine Methyl Transferase 5 (PRMT5) is a well-known oncoprotein but also expressed in healthy tissues with unclear physiological functions. As adult muscles express high levels of Prmt5, we generated skeletal muscle-specific Prmt5 knockout (Prmt5MKO ) mice. We observe reduced muscle mass, oxidative capacity, force production, and exercise performance in Prmt5MKO mice. The motor deficiency is associated with scarce lipid droplets in myofibers due to defects in lipid biosynthesis and accelerated degradation. Specifically, PRMT5 deletion reduces dimethylation and stability of Sterol Regulatory Element-Binding Transcription Factor 1a (SREBP1a), a master regulator of de novo lipogenesis. Moreover, Prmt5MKO impairs the repressive H4R3 symmetric dimethylation at the Pnpla2 promoter, elevating the level of its encoded protein ATGL, the rate-limiting enzyme catalyzing lipolysis. Accordingly, skeletal muscle-specific double knockout of Pnpla2 and Prmt5 normalizes muscle mass and function. Together, our findings delineate a physiological function of PRMT5 in linking lipid metabolism to contractile function of myofibers.
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Affiliation(s)
- Kun Ho Kim
- Department of Animal SciencesPurdue UniversityWest LafayetteINUSA
| | - Zhihao Jia
- Department of Animal SciencesPurdue UniversityWest LafayetteINUSA
| | - Madigan Snyder
- Department of Animal SciencesPurdue UniversityWest LafayetteINUSA
- Department of Biological SciencesPurdue UniversityWest LafayetteINUSA
| | - Jingjuan Chen
- Department of Animal SciencesPurdue UniversityWest LafayetteINUSA
| | - Jiamin Qiu
- Department of Animal SciencesPurdue UniversityWest LafayetteINUSA
| | - Stephanie N Oprescu
- Department of Animal SciencesPurdue UniversityWest LafayetteINUSA
- Department of Biological SciencesPurdue UniversityWest LafayetteINUSA
| | - Xiyue Chen
- Department of Animal SciencesPurdue UniversityWest LafayetteINUSA
| | - Sabriya A Syed
- Department of Biochemistry and Molecular PharmacologyUniversity of Massachusetts Medical SchoolWorcesterMAUSA
| | - Feng Yue
- Department of Animal SciencesPurdue UniversityWest LafayetteINUSA
| | - Bruno T Roseguini
- Department of Health and KinesiologyPurdue UniversityWest LafayetteINUSA
| | - Anthony N Imbalzano
- Department of Biochemistry and Molecular PharmacologyUniversity of Massachusetts Medical SchoolWorcesterMAUSA
| | - Changdeng Hu
- Department of Medicinal Chemistry and Molecular PharmacologyPurdue UniversityWest LafayetteINUSA
- Center for Cancer ResearchPurdue UniversityWest LafayetteINUSA
| | - Shihuan Kuang
- Department of Animal SciencesPurdue UniversityWest LafayetteINUSA
- Center for Cancer ResearchPurdue UniversityWest LafayetteINUSA
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Oprescu SN, Baumann N, Chen X, Sun Q, Zhao Y, Yue F, Wang H, Kuang S. Sox11 is enriched in myogenic progenitors but dispensable for development and regeneration of skeletal muscle. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.03.30.534956. [PMID: 37034612 PMCID: PMC10081271 DOI: 10.1101/2023.03.30.534956] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/19/2023]
Abstract
Transcription factors (TFs) play key roles in regulating the differentiation and function of stem cells, including muscle satellite cells (MuSCs), a resident stem cell population responsible for postnatal regeneration of the skeletal muscle. Sox11 belongs to the Sry-related HMG-box (SOX) family of TFs that play diverse roles in stem cell behavior and tissue specification. Analysis of single-cell RNA-sequencing (scRNA-seq) datasets identify a specific enrichment of Sox11 mRNA in differentiating but not quiescent MuSCs. Consistent with the scRNA-seq data, Sox11 levels increase during differentiation of murine primary myoblasts in vitro. scRNA-seq data comparing muscle regeneration in young and old mice further demonstrate that Sox11 expression is reduced in aged MuSCs. Age-related decline of Sox11 expression is associated with reduced chromatin contacts within the topologically associated domains. Unexpectedly, Myod1 Cre -driven deletion of Sox11 in embryonic myoblasts has no effects on muscle development and growth, resulting in apparently healthy muscles that regenerate normally. Pax7 CreER or Rosa26 CreER driven (MuSC-specific or global) deletion of Sox11 in adult mice similarly has no effects on MuSC differentiation or muscle regeneration. These results identify Sox11 as a novel myogenic differentiation marker with reduced expression in quiescent and aged MuSCs, but the specific function of Sox11 in myogenesis remain to be elucidated.
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15
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Molecular mechanisms of exercise contributing to tissue regeneration. Signal Transduct Target Ther 2022; 7:383. [PMID: 36446784 PMCID: PMC9709153 DOI: 10.1038/s41392-022-01233-2] [Citation(s) in RCA: 25] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2022] [Revised: 10/03/2022] [Accepted: 10/17/2022] [Indexed: 12/03/2022] Open
Abstract
Physical activity has been known as an essential element to promote human health for centuries. Thus, exercise intervention is encouraged to battle against sedentary lifestyle. Recent rapid advances in molecular biotechnology have demonstrated that both endurance and resistance exercise training, two traditional types of exercise, trigger a series of physiological responses, unraveling the mechanisms of exercise regulating on the human body. Therefore, exercise has been expected as a candidate approach of alleviating a wide range of diseases, such as metabolic diseases, neurodegenerative disorders, tumors, and cardiovascular diseases. In particular, the capacity of exercise to promote tissue regeneration has attracted the attention of many researchers in recent decades. Since most adult human organs have a weak regenerative capacity, it is currently a key challenge in regenerative medicine to improve the efficiency of tissue regeneration. As research progresses, exercise-induced tissue regeneration seems to provide a novel approach for fighting against injury or senescence, establishing strong theoretical basis for more and more "exercise mimetics." These drugs are acting as the pharmaceutical alternatives of those individuals who cannot experience the benefits of exercise. Here, we comprehensively provide a description of the benefits of exercise on tissue regeneration in diverse organs, mainly focusing on musculoskeletal system, cardiovascular system, and nervous system. We also discuss the underlying molecular mechanisms associated with the regenerative effects of exercise and emerging therapeutic exercise mimetics for regeneration, as well as the associated opportunities and challenges. We aim to describe an integrated perspective on the current advances of distinct physiological mechanisms associated with exercise-induced tissue regeneration on various organs and facilitate the development of drugs that mimics the benefits of exercise.
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16
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Jo YW, Park I, Yoo K, Woo HY, Kim YL, Kim YE, Kim JH, Kong YY. Notch1 and Notch2 Signaling Exclusively but Cooperatively Maintain Fetal Myogenic Progenitors. Stem Cells 2022; 40:1031-1042. [PMID: 35922037 DOI: 10.1093/stmcls/sxac056] [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: 03/22/2022] [Accepted: 07/27/2022] [Indexed: 11/14/2022]
Abstract
Myogenic progenitors (MPs) generate myocytes that fuse to form myofibers during skeletal muscle development while maintaining the progenitor pool, which is crucial for generating sufficient muscle. Notch signaling has been known to reserve a population of embryonic MPs during primary myogenesis by promoting cell cycle exit and suppressing premature differentiation. However, the roles of individual Notch receptors (Notch1-4) during embryonic/fetal myogenesis are still elusive. In this study, we found that Notch1 and Notch2, which exhibit the highest structural similarity among Notch receptors, maintain the MP population by distinct mechanisms: Notch1 induces cell cycle exit and Notch2 suppresses premature differentiation. Moreover, genetic and cell culture studies showed that Notch1 and Notch2 signaling in MPs are distinctively activated by interacting with Notch ligand-expressing myofibers and MP-lineage cells, respectively. These results suggest that through different activation modes, Notch1 and Notch2 distinctively and cooperatively maintain MP population during fetal myogenesis for proper muscle development.
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Affiliation(s)
- Young-Woo Jo
- School of Biological Sciences, Seoul National University, Seoul, Republic of Korea
| | - Inkuk Park
- School of Biological Sciences, Seoul National University, Seoul, Republic of Korea
| | - Kyusang Yoo
- School of Biological Sciences, Seoul National University, Seoul, Republic of Korea
| | - Hyun-Young Woo
- School of Biological Sciences, Seoul National University, Seoul, Republic of Korea
| | - Ye Lynne Kim
- School of Biological Sciences, Seoul National University, Seoul, Republic of Korea
| | - Yea-Eun Kim
- School of Biological Sciences, Seoul National University, Seoul, Republic of Korea
| | - Ji-Hoon Kim
- School of Biological Sciences, Seoul National University, Seoul, Republic of Korea.,Molecular Recognition Research Center, Korea Institute of Science and Technology, Seoul, Republic of Korea
| | - Young-Yun Kong
- School of Biological Sciences, Seoul National University, Seoul, Republic of Korea
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17
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Catalani E, Zecchini S, Giovarelli M, Cherubini A, Del Quondam S, Brunetti K, Silvestri F, Roux-Biejat P, Napoli A, Casati SR, Ceci M, Romano N, Bongiorni S, Prantera G, Clementi E, Perrotta C, De Palma C, Cervia D. RACK1 is evolutionary conserved in satellite stem cell activation and adult skeletal muscle regeneration. Cell Death Dis 2022; 8:459. [PMID: 36396939 PMCID: PMC9672362 DOI: 10.1038/s41420-022-01250-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2022] [Revised: 11/03/2022] [Accepted: 11/07/2022] [Indexed: 11/19/2022]
Abstract
Skeletal muscle growth and regeneration involves the activity of resident adult stem cells, namely satellite cells (SC). Despite numerous mechanisms have been described, different signals are emerging as relevant in SC homeostasis. Here we demonstrated that the Receptor for Activated C-Kinase 1 (RACK1) is important in SC function. RACK1 was expressed transiently in the skeletal muscle of post-natal mice, being abundant in the early phase of muscle growth and almost disappearing in adult mature fibers. The presence of RACK1 in interstitial SC was also detected. After acute injury in muscle of both mouse and the fruit fly Drosophila melanogaster (used as alternative in vivo model) we found that RACK1 accumulated in regenerating fibers while it declined with the progression of repair process. To note, RACK1 also localized in the active SC that populate recovering tissue. The dynamics of RACK1 levels in isolated adult SC of mice, i.e., progressively high during differentiation and low compared to proliferating conditions, and RACK1 silencing indicated that RACK1 promotes both the formation of myotubes and the accretion of nascent myotubes. In Drosophila with depleted RACK1 in all muscle cells or, specifically, in SC lineage we observed a delayed recovery of skeletal muscle after physical damage as well as the low presence of active SC in the wound area. Our results also suggest the coupling of RACK1 to muscle unfolded protein response during SC activation. Collectively, we provided the first evidence that transient levels of the evolutionarily conserved factor RACK1 are critical for adult SC activation and proper skeletal muscle regeneration, favoring the efficient progression of SC from a committed to a fully differentiated state.
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18
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Fasudil, a ROCK inhibitor, preserves limb integrity in a mouse model of unilateral critical limb ischemia: Possible interplay of inflammatory and angiogenic signaling pathways. Life Sci 2022; 309:121019. [DOI: 10.1016/j.lfs.2022.121019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2022] [Revised: 09/17/2022] [Accepted: 09/27/2022] [Indexed: 11/20/2022]
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19
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Vargas‐Franco D, Kalra R, Draper I, Pacak CA, Asakura A, Kang PB. The Notch signaling pathway in skeletal muscle health and disease. Muscle Nerve 2022; 66:530-544. [PMID: 35968817 PMCID: PMC9804383 DOI: 10.1002/mus.27684] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2022] [Revised: 07/20/2022] [Accepted: 07/24/2022] [Indexed: 01/05/2023]
Abstract
The Notch signaling pathway is a key regulator of skeletal muscle development and regeneration. Over the past decade, the discoveries of three new muscle disease genes have added a new dimension to the relationship between the Notch signaling pathway and skeletal muscle: MEGF10, POGLUT1, and JAG2. We review the clinical syndromes associated with pathogenic variants in each of these genes, known molecular and cellular functions of their protein products with a particular focus on the Notch signaling pathway, and potential novel therapeutic targets that may emerge from further investigations of these diseases. The phenotypes associated with two of these genes, POGLUT1 and JAG2, clearly fall within the realm of muscular dystrophy, whereas the third, MEGF10, is associated with a congenital myopathy/muscular dystrophy overlap syndrome classically known as early-onset myopathy, areflexia, respiratory distress, and dysphagia. JAG2 is a canonical Notch ligand, POGLUT1 glycosylates the extracellular domain of Notch receptors, and MEGF10 interacts with the intracellular domain of NOTCH1. Additional genes and their encoded proteins relevant to muscle function and disease with links to the Notch signaling pathway include TRIM32, ATP2A1 (SERCA1), JAG1, PAX7, and NOTCH2NLC. There is enormous potential to identify convergent mechanisms of skeletal muscle disease and new therapeutic targets through further investigations of the Notch signaling pathway in the context of skeletal muscle development, maintenance, and disease.
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Affiliation(s)
| | - Raghav Kalra
- Division of Pediatric NeurologyUniversity of Florida College of MedicineGainesvilleFlorida
| | - Isabelle Draper
- Molecular Cardiology Research InstituteTufts Medical CenterBostonMassachusetts
| | - Christina A. Pacak
- Paul and Sheila Wellstone Muscular Dystrophy CenterUniversity of Minnesota Medical SchoolMinneapolisMinnesota
- Department of NeurologyUniversity of Minnesota Medical SchoolMinneapolisMinnesota
| | - Atsushi Asakura
- Paul and Sheila Wellstone Muscular Dystrophy CenterUniversity of Minnesota Medical SchoolMinneapolisMinnesota
- Department of NeurologyUniversity of Minnesota Medical SchoolMinneapolisMinnesota
| | - Peter B. Kang
- Paul and Sheila Wellstone Muscular Dystrophy CenterUniversity of Minnesota Medical SchoolMinneapolisMinnesota
- Department of NeurologyUniversity of Minnesota Medical SchoolMinneapolisMinnesota
- Institute for Translational NeuroscienceUniversity of Minnesota Medical SchoolMinneapolisMinnesota
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Abstract
The efficacy of implanted biomaterials is largely dependent on the response of the host's immune and stromal cells. Severe foreign body response (FBR) can impede the integration of the implant into the host tissue and compromise the intended mechanical and biochemical function. Many features of FBR, including late-stage fibrotic encapsulation of implants, parallel the formation of fibrotic scar tissue after tissue injury. Regenerative organisms like zebrafish and salamanders can avoid fibrosis after injury entirely, but FBR in these research organisms is rarely investigated because their immune competence is much lower than humans. The recent characterization of a regenerative mammal, the spiny mouse (Acomys), has inspired us to take a closer look at cellular regulation in regenerative organisms across the animal kingdom for insights into avoiding FBR in humans. Here, we highlight how major features of regeneration, such as blastema formation, macrophage polarization, and matrix composition, can be modulated across a range of regenerative research organisms to elucidate common features that may be harnessed to minimize FBR. Leveraging a deeper understanding of regenerative biology for biomaterial design may help to reduce FBR and improve device integration and performance.
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Affiliation(s)
- Sunaina Sapru
- Department of Mechanical and Aerospace Engineering, University of Florida, Gainesville, Florida 32611, United States
| | - Michele N Dill
- J. Crayton Pruitt Family Department of Biomedical Engineering, University of Florida, Gainesville, Florida 32611, United States
| | - Chelsey S Simmons
- Department of Mechanical and Aerospace Engineering, University of Florida, Gainesville, Florida 32611, United States.,J. Crayton Pruitt Family Department of Biomedical Engineering, University of Florida, Gainesville, Florida 32611, United States
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21
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Den Hartog L, Asakura A. Implications of notch signaling in duchenne muscular dystrophy. Front Physiol 2022; 13:984373. [PMID: 36237531 PMCID: PMC9553129 DOI: 10.3389/fphys.2022.984373] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2022] [Accepted: 09/05/2022] [Indexed: 11/13/2022] Open
Abstract
This review focuses upon the implications of the Notch signaling pathway in muscular dystrophies, particularly Duchenne muscular dystrophy (DMD): a pervasive and catastrophic condition concerned with skeletal muscle degeneration. Prior work has defined the pathogenesis of DMD, and several therapeutic approaches have been undertaken in order to regenerate skeletal muscle tissue and ameliorate the phenotype. There is presently no cure for DMD, but a promising avenue for novel therapies is inducing muscle regeneration via satellite cells (muscle stem cells). One specific target using this approach is the Notch signaling pathway. The canonical Notch signaling pathway has been well-characterized and it ultimately governs cell fate decision, cell proliferation, and induction of differentiation. Additionally, inhibition of the Notch signaling pathway has been directly implicated in the deficits seen with muscular dystrophies. Here, we explore the connection between the Notch signaling pathway and DMD, as well as how Notch signaling may be targeted to improve the muscle degeneration seen in muscular dystrophies.
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22
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Barutcu AR, Elizalde G, Gonzalez AE, Soni K, Rinn JL, Wagers AJ, Almada AE. Prolonged FOS activity disrupts a global myogenic transcriptional program by altering 3D chromatin architecture in primary muscle progenitor cells. Skelet Muscle 2022; 12:20. [PMID: 35971133 PMCID: PMC9377060 DOI: 10.1186/s13395-022-00303-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2021] [Accepted: 08/04/2022] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND The AP-1 transcription factor, FBJ osteosarcoma oncogene (FOS), is induced in adult muscle satellite cells (SCs) within hours following muscle damage and is required for effective stem cell activation and muscle repair. However, why FOS is rapidly downregulated before SCs enter cell cycle as progenitor cells (i.e., transiently expressed) remains unclear. Further, whether boosting FOS levels in the proliferating progeny of SCs can enhance their myogenic properties needs further evaluation. METHODS We established an inducible, FOS expression system to evaluate the impact of persistent FOS activity in muscle progenitor cells ex vivo. We performed various assays to measure cellular proliferation and differentiation, as well as uncover changes in RNA levels and three-dimensional (3D) chromatin interactions. RESULTS Persistent FOS activity in primary muscle progenitor cells severely antagonizes their ability to differentiate and form myotubes within the first 2 weeks in culture. RNA-seq analysis revealed that ectopic FOS activity in muscle progenitor cells suppressed a global pro-myogenic transcriptional program, while activating a stress-induced, mitogen-activated protein kinase (MAPK) transcriptional signature. Additionally, we observed various FOS-dependent, chromosomal re-organization events in A/B compartments, topologically associated domains (TADs), and genomic loops near FOS-regulated genes. CONCLUSIONS Our results suggest that elevated FOS activity in recently activated muscle progenitor cells perturbs cellular differentiation by altering the 3D chromosome organization near critical pro-myogenic genes. This work highlights the crucial importance of tightly controlling FOS expression in the muscle lineage and suggests that in states of chronic stress or disease, persistent FOS activity in muscle precursor cells may disrupt the muscle-forming process.
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Affiliation(s)
- A Rasim Barutcu
- Department of Stem Cell and Regenerative Biology, Harvard University, Cambridge, MA, USA
- Present address: Donnelly Centre, University of Toronto, Toronto, ON, Canada
| | - Gabriel Elizalde
- Department of Orthopaedic Surgery, University of Southern California, Los Angeles, CA, USA
- Department of Stem Cell Biology and Regenerative Medicine, University of Southern California, Los Angeles, CA, USA
| | - Alfredo E Gonzalez
- Department of Stem Cell and Regenerative Biology, Harvard University, Cambridge, MA, USA
| | - Kartik Soni
- Department of Orthopaedic Surgery, University of Southern California, Los Angeles, CA, USA
- Department of Stem Cell Biology and Regenerative Medicine, University of Southern California, Los Angeles, CA, USA
| | - John L Rinn
- Department of Stem Cell and Regenerative Biology, Harvard University, Cambridge, MA, USA
- Present address: BioFrontiers and Department of Biochemistry, University of Colorado Boulder, Boulder, CO, 80303, USA
| | - Amy J Wagers
- Department of Stem Cell and Regenerative Biology, Harvard University, Cambridge, MA, USA
| | - Albert E Almada
- Department of Stem Cell and Regenerative Biology, Harvard University, Cambridge, MA, USA.
- Department of Orthopaedic Surgery, University of Southern California, Los Angeles, CA, USA.
- Department of Stem Cell Biology and Regenerative Medicine, University of Southern California, Los Angeles, CA, USA.
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Notch signaling leads to a slower progression of embryonic myogenic differentiation in Landrace than in Langtang pigs. Acta Biochim Biophys Sin (Shanghai) 2022; 54:1122-1132. [PMID: 35866607 PMCID: PMC9827795 DOI: 10.3724/abbs.2022095] [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] [Indexed: 11/25/2022] Open
Abstract
Delving into porcine embryonic myogenesis is the key to elucidate the complex regulation of breed-specific differences in growth performance and meat production. Increasing evidence proves that pigs with less meat production show earlier embryonic myogenesis, but little is known about the underlying mechanisms. In this study, we examine the longissimus dorsi muscle (LDM) by immunohistochemistry and confirm that the differentiation of myogenic progenitors is increased ( P<0.05) in Lantang (LT, fatty) pigs compared with that in Landrace (LR, lean) pigs, which results in more ( P<0.001) differentiated myoblasts (Pax7 -/MyoD +) and less ( P<0.001) myogenic progenitors (Pax7 +/MyoD -) in LT pigs at 35 days post-conception (35dpc). Additionally, embryonic myogenic progenitors isolated from LT pigs show greater ( P<0.001) differentiation capacity with earlier expression of MyoD compared with those from LR pigs. Moreover, Notch signaling is more active ( P<0.05) in LR pig myogenic progenitors than in LT pig myogenic progenitors. Inhibition of Notch signaling in LR myogenic progenitors suppresses Pax7 expression and increases MyoD expression, thus promoting myogenic differentiation. Consistently, the process of myogenic progenitors differentiating into myoblasts in ex vivo embryo limbs is accelerated when Notch signaling is inhibited. These results indicate that Notch signaling facilitates the maintenance of myogenic progenitors and antagonizes myogenic differentiation by promoting Pax7 expression and preventing MyoD expression in LR pigs.
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Saini N, Lakshminarayanan S, Kundu P, Sarin A. Notch1 Modulation of Cellular Calcium Regulates Mitochondrial Metabolism and Anti-Apoptotic Activity in T-Regulatory Cells. Front Immunol 2022; 13:832159. [PMID: 35222416 PMCID: PMC8866856 DOI: 10.3389/fimmu.2022.832159] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2021] [Accepted: 01/21/2022] [Indexed: 01/04/2023] Open
Abstract
As the major hub of metabolic activity and an organelle sequestering pro-apoptogenic intermediates, mitochondria lie at the crossroads of cellular decisions of death and survival. Intracellular calcium is a key regulator of these outcomes with rapid, uncontrolled uptake into mitochondria, activating pro-apoptotic cascades that trigger cell death. Here, we show that calcium uptake and mitochondrial metabolism in murine T-regulatory cells (Tregs) is tuned by Notch1 activity. Based on analysis of Tregs and the HEK cell line, we present evidence that modulation of cellular calcium dynamics underpins Notch1 regulation of mitochondrial homeostasis and consequently anti-apoptotic activity. Targeted siRNA-mediated ablations reveal dependency on molecules controlling calcium release from the endoplasmic reticulum (ER) and the chaperone, glucose-regulated protein 75 (Grp75), the associated protein Voltage Dependent Anion Channel (VDAC)1 and the Mitochondrial Calcium Uniporter (MCU), which together facilitate ER calcium transfer and uptake into the mitochondria. Endogenous Notch1 is detected in immune-complexes with Grp75 and VDAC1. Deficits in mitochondrial oxidative and survival in Notch1 deficient Tregs, were corrected by the expression of recombinant Notch1 intracellular domain, and in part by recombinant Grp75. Thus, the modulation of calcium dynamics and consequently mitochondrial metabolism underlies Treg survival in conditions of nutrient stress. This work positions a key role for Notch1 activity in these outcomes.
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Affiliation(s)
- Neetu Saini
- Regulation of Cell Fate, Institute for Stem Cell Science and Regenerative Medicine (inStem), Bengaluru, India.,Department of Biology, Manipal Academy of Higher Education, Manipal, India
| | - Sowmya Lakshminarayanan
- National Centre for Biological Science, TATA Institute of Fundamental Research (TIFR), Bengaluru, India
| | - Priyanka Kundu
- National Centre for Biological Science, TATA Institute of Fundamental Research (TIFR), Bengaluru, India
| | - Apurva Sarin
- Regulation of Cell Fate, Institute for Stem Cell Science and Regenerative Medicine (inStem), Bengaluru, India
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25
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Sirt6 reprograms myofibers to oxidative type through CREB-dependent Sox6 suppression. Nat Commun 2022; 13:1808. [PMID: 35379817 PMCID: PMC8980083 DOI: 10.1038/s41467-022-29472-5] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2021] [Accepted: 03/17/2022] [Indexed: 11/08/2022] Open
Abstract
AbstractExpanding the exercise capacity of skeletal muscle is an emerging strategy to combat obesity-related metabolic diseases and this can be achieved by shifting skeletal muscle fibers toward slow-twitch oxidative type. Here, we report that Sirt6, an anti-aging histone deacetylase, is critical in regulating myofiber configuration toward oxidative type and that Sirt6 activator can be an exercise mimetic. Genetic inactivation of Sirt6 in skeletal muscle reduced while its transgenic overexpression increased mitochondrial oxidative capacity and exercise performance in mice. Mechanistically, we show that Sirt6 downregulated Sox6, a key repressor of slow fiber specific gene, by increasing the transcription of CREB. Sirt6 expression is elevated in chronically exercised humans, and mice treated with an activator of Sirt6 showed an increase in exercise endurance as compared to exercise-trained controls. Thus, the current study identifies Sirt6 as a molecular target for reprogramming myofiber composition toward the oxidative type and for improving muscle performance.
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26
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Dey P, Soyer MA, Dey BK. MicroRNA-24-3p promotes skeletal muscle differentiation and regeneration by regulating HMGA1. Cell Mol Life Sci 2022; 79:170. [PMID: 35238991 PMCID: PMC11072726 DOI: 10.1007/s00018-022-04168-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2021] [Revised: 01/13/2022] [Accepted: 01/24/2022] [Indexed: 11/30/2022]
Abstract
Numerous studies have established the critical roles of microRNAs in regulating post-transcriptional gene expression in diverse biological processes. Here, we report on the role and mechanism of miR-24-3p in skeletal muscle differentiation and regeneration. miR-24-3p promotes myoblast differentiation and skeletal muscle regeneration by directly targeting high mobility group AT-hook 1 (HMGA1) and regulating it and its direct downstream target, the inhibitor of differentiation 3 (ID3). miR-24-3p knockdown in neonatal mice increases PAX7-positive proliferating muscle stem cells (MuSCs) by derepressing Hmga1 and Id3. Similarly, inhibition of miR-24-3p in the tibialis anterior muscle prevents Hmga1 and Id3 downregulation and impairs regeneration. These findings provide evidence that the miR-24-3p/HMGA1/ID3 axis is required for MuSC differentiation and skeletal muscle regeneration in vivo.
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Affiliation(s)
- Paromita Dey
- The RNA Institute, University at Albany, State University of New York (SUNY), 1400 Washington Avenue, Albany, NY, 12222, USA
| | - Miles A Soyer
- The RNA Institute, University at Albany, State University of New York (SUNY), 1400 Washington Avenue, Albany, NY, 12222, USA
- Department of Biological Sciences, University at Albany, State University of New York (SUNY), 1400 Washington Avenue, Albany, NY, 12222, USA
| | - Bijan K Dey
- The RNA Institute, University at Albany, State University of New York (SUNY), 1400 Washington Avenue, Albany, NY, 12222, USA.
- Department of Biological Sciences, University at Albany, State University of New York (SUNY), 1400 Washington Avenue, Albany, NY, 12222, USA.
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27
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Engineering tissue morphogenesis: taking it up a Notch. Trends Biotechnol 2022; 40:945-957. [PMID: 35181146 PMCID: PMC7613405 DOI: 10.1016/j.tibtech.2022.01.007] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2021] [Revised: 01/11/2022] [Accepted: 01/12/2022] [Indexed: 12/16/2022]
Abstract
Recreating functional tissues through bioengineering strategies requires steering of complex cell fate decisions. Notch, a juxtacrine signaling pathway, regulates cell fate and controls cellular organization with local precision. The engineering-friendly characteristics of the Notch pathway provide handles for engineering tissue patterning and morphogenesis. We discuss the physiological significance and mechanisms of Notch signaling with an emphasis on its potential use for engineering complex tissues. We highlight the current state of the art of Notch activation and provide a view on the design aspects, opportunities, and challenges in modulating Notch for tissue-engineering strategies. We propose that finely tuned control of Notch contributes to the generation of tissues with accurate form and functionality.
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28
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Addicks GC, Zhang H, Ryu D, Vasam G, Green AE, Marshall PL, Patel S, Kang BE, Kim D, Katsyuba E, Williams EG, Renaud JM, Auwerx J, Menzies KJ. GCN5 maintains muscle integrity by acetylating YY1 to promote dystrophin expression. J Cell Biol 2022; 221:e202104022. [PMID: 35024765 PMCID: PMC8931935 DOI: 10.1083/jcb.202104022] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2021] [Revised: 11/04/2021] [Accepted: 12/08/2021] [Indexed: 12/12/2022] Open
Abstract
Protein lysine acetylation is a post-translational modification that regulates protein structure and function. It is targeted to proteins by lysine acetyltransferases (KATs) or removed by lysine deacetylases. This work identifies a role for the KAT enzyme general control of amino acid synthesis protein 5 (GCN5; KAT2A) in regulating muscle integrity by inhibiting DNA binding of the transcription factor/repressor Yin Yang 1 (YY1). Here we report that a muscle-specific mouse knockout of GCN5 (Gcn5skm-/-) reduces the expression of key structural muscle proteins, including dystrophin, resulting in myopathy. GCN5 was found to acetylate YY1 at two residues (K392 and K393), disrupting the interaction between the YY1 zinc finger region and DNA. These findings were supported by human data, including an observed negative correlation between YY1 gene expression and muscle fiber diameter. Collectively, GCN5 positively regulates muscle integrity through maintenance of structural protein expression via acetylation-dependent inhibition of YY1. This work implicates the role of protein acetylation in the regulation of muscle health and for consideration in the design of novel therapeutic strategies to support healthy muscle during myopathy or aging.
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Affiliation(s)
- Gregory C Addicks
- Interdisciplinary School of Health Sciences, Faculty of Health Sciences, University of Ottawa, Ottawa, Ontario, Canada
| | - Hongbo Zhang
- Key Laboratory for Stem Cells and Tissue Engineering, Ministry of Education, Department of Histology and Embryology, Zhongshan School of Medicine, Sun Yat-Sen University, Guangzhou, China
- Laboratory of Integrative Systems Physiology, École polytechnique fédérale de Lausanne, Lausanne, Switzerland
| | - Dongryeol Ryu
- Department of Molecular Cell Biology, Sungkyunkwan University School of Medicine, Suwon, South Korea
| | - Goutham Vasam
- Interdisciplinary School of Health Sciences, Faculty of Health Sciences, University of Ottawa, Ottawa, Ontario, Canada
| | - Alexander E Green
- Interdisciplinary School of Health Sciences, Faculty of Health Sciences, University of Ottawa, Ottawa, Ontario, Canada
- Ottawa Institute of Systems Biology and the Éric Poulin Centre for Neuromuscular Disease, Department of Biochemistry, Microbiology and Immunology, Faculty of Medicine, University of Ottawa, Ottawa, Ontario, Canada
| | - Philip L Marshall
- Interdisciplinary School of Health Sciences, Faculty of Health Sciences, University of Ottawa, Ottawa, Ontario, Canada
| | - Sonia Patel
- Interdisciplinary School of Health Sciences, Faculty of Health Sciences, University of Ottawa, Ottawa, Ontario, Canada
| | - Baeki E Kang
- Department of Molecular Cell Biology, Sungkyunkwan University School of Medicine, Suwon, South Korea
| | - Doyoun Kim
- Division of Therapeutics and Biotechnology, Korea Research Institute of Chemical Technology, Daejeon, South Korea
| | - Elena Katsyuba
- Laboratory of Integrative Systems Physiology, École polytechnique fédérale de Lausanne, Lausanne, Switzerland
| | - Evan G Williams
- Luxembourg Centre for Systems Biomedicine, University of Luxembourg, Esch-sur-Alzette, Luxembourg
| | - Jean-Marc Renaud
- Department of Cellular and Molecular Medicine, Faculty of Medicine, University of Ottawa, Ottawa, Ontario, Canada
| | - Johan Auwerx
- Laboratory of Integrative Systems Physiology, École polytechnique fédérale de Lausanne, Lausanne, Switzerland
| | - Keir J Menzies
- Interdisciplinary School of Health Sciences, Faculty of Health Sciences, University of Ottawa, Ottawa, Ontario, Canada
- Ottawa Institute of Systems Biology and the Éric Poulin Centre for Neuromuscular Disease, Department of Biochemistry, Microbiology and Immunology, Faculty of Medicine, University of Ottawa, Ottawa, Ontario, Canada
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29
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Fujimaki S, Matsumoto T, Muramatsu M, Nagahisa H, Horii N, Seko D, Masuda S, Wang X, Asakura Y, Takahashi Y, Miyamoto Y, Usuki S, Yasunaga KI, Kamei Y, Nishinakamura R, Minami T, Fukuda T, Asakura A, Ono Y. The endothelial Dll4-muscular Notch2 axis regulates skeletal muscle mass. Nat Metab 2022; 4:180-189. [PMID: 35228746 DOI: 10.1038/s42255-022-00533-9] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/25/2021] [Accepted: 01/17/2022] [Indexed: 02/03/2023]
Abstract
Adult skeletal muscle is a highly plastic tissue that readily reduces or gains its mass in response to mechanical and metabolic stimulation; however, the upstream mechanisms that control muscle mass remain unclear. Notch signalling is highly conserved, and regulates many cellular events, including proliferation and differentiation of various types of tissue stem cell via cell-cell contact. Here we reveal that multinucleated myofibres express Notch2, which plays a crucial role in disuse- or diabetes-induced muscle atrophy. Mechanistically, in both atrophic conditions, the microvascular endothelium upregulates and releases the Notch ligand, Dll4, which then activates muscular Notch2 without direct cell-cell contact. Inhibition of the Dll4-Notch2 axis substantively prevents these muscle atrophy and promotes mechanical overloading-induced muscle hypertrophy in mice. Our results illuminate a tissue-specific function of the endothelium in controlling tissue plasticity and highlight the endothelial Dll4-muscular Notch2 axis as a central upstream mechanism that regulates catabolic signals from mechanical and metabolic stimulation, providing a therapeutic target for muscle-wasting diseases.
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Affiliation(s)
- Shin Fujimaki
- Department of Muscle Development and Regeneration, Institute of Molecular Embryology and Genetics, Kumamoto University, Kumamoto, Japan
- Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Tomohiro Matsumoto
- Department of Muscle Development and Regeneration, Institute of Molecular Embryology and Genetics, Kumamoto University, Kumamoto, Japan
| | - Masashi Muramatsu
- Division of Molecular and Vascular Biology, IRDA, Kumamoto University, Kumamoto, Japan
| | - Hiroshi Nagahisa
- Department of Muscle Development and Regeneration, Institute of Molecular Embryology and Genetics, Kumamoto University, Kumamoto, Japan
| | - Naoki Horii
- Department of Muscle Development and Regeneration, Institute of Molecular Embryology and Genetics, Kumamoto University, Kumamoto, Japan
| | - Daiki Seko
- Department of Muscle Development and Regeneration, Institute of Molecular Embryology and Genetics, Kumamoto University, Kumamoto, Japan
- Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Shinya Masuda
- Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Xuerui Wang
- Department of Neurology, University of Minnesota Medical School, Minneapolis, MN, USA
| | - Yoko Asakura
- Department of Neurology, University of Minnesota Medical School, Minneapolis, MN, USA
| | - Yukie Takahashi
- International Research Center for Medical Sciences, Faculty of Life Sciences, Kumamoto University, Kumamoto, Japan
| | - Yuta Miyamoto
- Department of Anatomy and Neurobiology, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan
| | - Shingo Usuki
- Liaison Laboratory Research Promotion Center, Institute of Molecular Embryology and Genetics, Kumamoto University, Kumamoto, Japan
| | - Kei-Ichiro Yasunaga
- Liaison Laboratory Research Promotion Center, Institute of Molecular Embryology and Genetics, Kumamoto University, Kumamoto, Japan
| | - Yasutomi Kamei
- Graduate School of Life and Environmental Sciences, Kyoto Prefectural University, Kyoto, Japan
| | - Ryuichi Nishinakamura
- Department of Kidney Development, Institute of Molecular Embryology and Genetics, Kumamoto University, Kumamoto, Japan
| | - Takashi Minami
- Division of Molecular and Vascular Biology, IRDA, Kumamoto University, Kumamoto, Japan
| | - Takaichi Fukuda
- Department of Anatomy and Neurobiology, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan
| | - Atsushi Asakura
- Department of Neurology, University of Minnesota Medical School, Minneapolis, MN, USA
| | - Yusuke Ono
- Department of Muscle Development and Regeneration, Institute of Molecular Embryology and Genetics, Kumamoto University, Kumamoto, Japan.
- Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan.
- Center for Metabolic Regulation of Healthy Aging, Kumamoto University Faculty of Life Sciences, Kumamoto, Japan.
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30
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Zbinden-Foncea H, Castro-Sepulveda M, Fuentes J, Speisky H. Effect of epicatechin on skeletal muscle. Curr Med Chem 2021; 29:1110-1123. [DOI: 10.2174/0929867329666211217100020] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2021] [Revised: 10/04/2021] [Accepted: 10/06/2021] [Indexed: 11/22/2022]
Abstract
:
Loss of skeletal muscle (SkM) quality is associated with different clinical conditions such as aging, diabetes, obesity, cancer and heart failure. Nutritional research has focused on identifying naturally occurring molecules that mitigate the loss of SkM quality induced by a pathology or syndrome. In this context, although few human studies have been conducted, Epicatechin (Epi) is a prime candidate that may positively affect SkM quality by its potential ability to mitigate muscle mass loss. This seems to be a consequence of its antioxidant, anti-inflammatory properties, and its stimulation of mitochondrial biogenesis to increase myogenic differentiation, as well as its modulation of key proteins involved in SkM structure, function, metabolism, and growth. In conclusion, the Epi could prevent, mitigate, delay, and even treat muscle-related disorders caused by aging and diseases, however, studies in humans are needed.
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Affiliation(s)
| | | | - Jocelyn Fuentes
- School of Kinesiology, Faculty of Medicine, Universidad Finis Terrae, Santiago, Chile
| | - Hernan Speisky
- Laboratory of Antioxidants, Nutrition and Food Technology Institute, University of Chile, Santiago, Chile
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31
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Roy A, Tomaz da Silva M, Bhat R, Bohnert KR, Iwawaki T, Kumar A. The IRE1/XBP1 signaling axis promotes skeletal muscle regeneration through a cell non-autonomous mechanism. eLife 2021; 10:e73215. [PMID: 34812145 PMCID: PMC8635982 DOI: 10.7554/elife.73215] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2021] [Accepted: 11/22/2021] [Indexed: 12/12/2022] Open
Abstract
Skeletal muscle regeneration is regulated by coordinated activation of multiple signaling pathways. The unfolded protein response (UPR) is a major mechanism that detects and alleviates protein-folding stresses in the endoplasmic reticulum. However, the role of individual arms of the UPR in skeletal muscle regeneration remain less understood. In the present study, we demonstrate that IRE1α (also known as ERN1) and its downstream target, XBP1, are activated in skeletal muscle of mice upon injury. Myofiber-specific ablation of IRE1α or XBP1 in mice diminishes skeletal muscle regeneration that is accompanied with reduced number of satellite cells. Ex vivo cultures of myofiber explants demonstrate that ablation of IRE1α reduces the proliferative capacity of myofiber-associated satellite cells. Myofiber-specific ablation of IRE1α dampens Notch signaling and canonical NF-κB pathway in skeletal muscle of adult mice. Finally, targeted ablation of IRE1α also reduces Notch signaling, abundance of satellite cells, and skeletal muscle regeneration in the mdx mice, a model of Duchenne muscular dystrophy. Collectively, our experiments suggest that the IRE1α-mediated signaling promotes muscle regeneration through augmenting the proliferation of satellite cells in a cell non-autonomous manner.
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Affiliation(s)
- Anirban Roy
- Department of Pharmacological and Pharmaceutical Sciences, University of HoustonHoustonUnited States
| | - Meiricris Tomaz da Silva
- Department of Pharmacological and Pharmaceutical Sciences, University of HoustonHoustonUnited States
| | - Raksha Bhat
- Department of Pharmacological and Pharmaceutical Sciences, University of HoustonHoustonUnited States
| | - Kyle R Bohnert
- Kinesiology Department, St Ambrose UniversityDavenportUnited States
| | - Takao Iwawaki
- Division of Cell Medicine, Department of Life Science, Medical Research Institute, Kanazawa Medical UniversityUchinadaJapan
| | - Ashok Kumar
- Department of Pharmacological and Pharmaceutical Sciences, University of HoustonHoustonUnited States
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32
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Feedback regulation of Notch signaling and myogenesis connected by MyoD-Dll1 axis. PLoS Genet 2021; 17:e1009729. [PMID: 34370738 PMCID: PMC8376015 DOI: 10.1371/journal.pgen.1009729] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2021] [Revised: 08/19/2021] [Accepted: 07/20/2021] [Indexed: 12/27/2022] Open
Abstract
Muscle precursor cells known as myoblasts are essential for muscle development and regeneration. Notch signaling is an ancient intercellular communication mechanism that plays prominent roles in controlling the myogenic program of myoblasts. Currently whether and how the myogenic cues feedback to refine Notch activities in these cells are largely unknown. Here, by mouse and human gene gain/loss-of-function studies, we report that MyoD directly turns on the expression of Notch-ligand gene Dll1 which activates Notch pathway to prevent precautious differentiation in neighboring myoblasts, while autonomously inhibits Notch to facilitate a myogenic program in Dll1 expressing cells. Mechanistically, we studied cis-regulatory DNA motifs underlying the MyoD-Dll1-Notch axis in vivo by characterizing myogenesis of a novel E-box deficient mouse model, as well as in human cells through CRISPR-mediated interference. These results uncovered the crucial transcriptional mechanism that mediates the reciprocal controls of Notch and myogenesis.
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33
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Kutz LC, Cui X, Xie JX, Mukherji ST, Terrell KC, Huang M, Wang X, Wang J, Martin AJ, Pessoa MT, Cai L, Zhu H, Heiny JA, Shapiro JI, Blanco G, Xie Z, Pierre SV. The Na/K-ATPase α1/Src interaction regulates metabolic reserve and Western diet intolerance. Acta Physiol (Oxf) 2021; 232:e13652. [PMID: 33752256 DOI: 10.1111/apha.13652] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2020] [Revised: 03/12/2021] [Accepted: 03/15/2021] [Indexed: 02/06/2023]
Abstract
AIM Highly prevalent diseases such as insulin resistance and heart failure are characterized by reduced metabolic flexibility and reserve. We tested whether Na/K-ATPase (NKA)-mediated regulation of Src kinase, which requires two NKA sequences specific to the α1 isoform, is a regulator of metabolic capacity that can be targeted pharmacologically. METHODS Metabolic capacity was challenged functionally by Seahorse metabolic flux analyses and glucose deprivation in LLC-PK1-derived cells expressing Src binding rat NKA α1, non-Src-binding rat NKA α2 (the most abundant NKA isoform in the skeletal muscle), and Src binding gain-of-function mutant rat NKA α2. Mice with skeletal muscle-specific ablation of NKA α1 (skα1-/-) were generated using a MyoD:Cre-Lox approach and were subjected to treadmill testing and Western diet. C57/Bl6 mice were subjected to Western diet with or without pharmacological inhibition of NKA α1/Src modulation by treatment with pNaKtide, a cell-permeable peptide designed by mapping one of the sites of NKA α1/Src interaction. RESULTS Metabolic studies in mutant cell lines revealed that the Src binding regions of NKA α1 are required to maintain metabolic reserve and flexibility. Skα1-/- mice had decreased exercise endurance and mitochondrial Complex I dysfunction. However, skα1-/- mice were resistant to Western diet-induced insulin resistance and glucose intolerance, a protection phenocopied by pharmacological inhibition of NKA α1-mediated Src regulation with pNaKtide. CONCLUSIONS These results suggest that NKA α1/Src regulatory function may be targeted in metabolic diseases. Because Src regulatory capability by NKA α1 is exclusive to endotherms, it may link the aerobic scope hypothesis of endothermy evolution to metabolic dysfunction.
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Affiliation(s)
- Laura C. Kutz
- Marshall Institute for Interdisciplinary Research Marshall University Huntington WV USA
| | - Xiaoyu Cui
- Marshall Institute for Interdisciplinary Research Marshall University Huntington WV USA
| | - Jeffrey X. Xie
- Marshall Institute for Interdisciplinary Research Marshall University Huntington WV USA
- Department of Internal Medicine University of Michigan Ann Arbor MI USA
| | - Shreya T. Mukherji
- Marshall Institute for Interdisciplinary Research Marshall University Huntington WV USA
| | - Kayleigh C. Terrell
- Marshall Institute for Interdisciplinary Research Marshall University Huntington WV USA
| | - Minqi Huang
- Marshall Institute for Interdisciplinary Research Marshall University Huntington WV USA
| | - Xiaoliang Wang
- Marshall Institute for Interdisciplinary Research Marshall University Huntington WV USA
| | - Jiayan Wang
- Marshall Institute for Interdisciplinary Research Marshall University Huntington WV USA
| | - Adam J. Martin
- Marshall Institute for Interdisciplinary Research Marshall University Huntington WV USA
| | - Marco T. Pessoa
- Marshall Institute for Interdisciplinary Research Marshall University Huntington WV USA
| | - Liquan Cai
- Marshall Institute for Interdisciplinary Research Marshall University Huntington WV USA
| | - Hua Zhu
- Department of Surgery Wexner Medical Center Ohio State University Columbus OH USA
| | - Judith A. Heiny
- Department of Pharmacology and Systems Physiology University of Cincinnati Cincinnati OH USA
| | - Joseph I. Shapiro
- Joan C. Edwards School of Medicine Marshall University Huntington WV USA
| | - Gustavo Blanco
- Department of Molecular and Integrative Physiology, and The Kidney Institute University of Kansas Medical Center Kansas City KS USA
| | - Zijian Xie
- Marshall Institute for Interdisciplinary Research Marshall University Huntington WV USA
| | - Sandrine V. Pierre
- Marshall Institute for Interdisciplinary Research Marshall University Huntington WV USA
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34
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Hurtado E, Núñez-Álvarez Y, Muñoz M, Gutiérrez-Caballero C, Casas J, Pendás AM, Peinado MA, Suelves M. HDAC11 is a novel regulator of fatty acid oxidative metabolism in skeletal muscle. FEBS J 2021; 288:902-919. [PMID: 32563202 DOI: 10.1111/febs.15456] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2019] [Revised: 04/14/2020] [Accepted: 06/15/2020] [Indexed: 12/19/2022]
Abstract
Skeletal muscle is the largest tissue in mammalian organisms and is a key determinant of basal metabolic rate and whole-body energy metabolism. Histone deacetylase 11 (HDAC11) is the only member of the class IV subfamily of HDACs, and it is highly expressed in skeletal muscle, but its role in skeletal muscle physiology has never been investigated. Here, we describe for the first time the consequences of HDAC11 genetic deficiency in skeletal muscle, which results in the improvement of muscle function enhancing fatigue resistance and muscle strength. Loss of HDAC11 had no obvious impact on skeletal muscle structure but increased the number of oxidative myofibers by promoting a glycolytic-to-oxidative muscle fiber switch. Unexpectedly, HDAC11 was localized in muscle mitochondria and its deficiency enhanced mitochondrial content. In particular, we showed that HDAC11 depletion increased mitochondrial fatty acid β-oxidation through activating the AMP-activated protein kinase-acetyl-CoA carboxylase pathway and reducing acylcarnitine levels in vivo, thus providing a mechanistic explanation for the improved muscle strength and fatigue resistance. Overall, our data reveal a unique role of HDAC11 in the maintenance of muscle fiber-type balance and the mitochondrial lipid oxidation. These findings shed light on the mechanisms governing muscle metabolism and may have implications for chronic muscle metabolic disease management.
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Affiliation(s)
- Erica Hurtado
- Program of Predictive and Personalized Medicine of Cancer, Germans Trias i Pujol Research Institute, Can Ruti Campus, Badalona, Spain
| | - Yaiza Núñez-Álvarez
- Program of Predictive and Personalized Medicine of Cancer, Germans Trias i Pujol Research Institute, Can Ruti Campus, Badalona, Spain
| | - Mar Muñoz
- Program of Predictive and Personalized Medicine of Cancer, Germans Trias i Pujol Research Institute, Can Ruti Campus, Badalona, Spain
| | | | - Josefina Casas
- Institute of Advanced Chemistry of Catalonia, Barcelona, Spain
- Liver and Digestive Diseases Networking Biomedical Research Centre, Madrid, Spain
| | - Alberto M Pendás
- Institute of Cellular and Molecular Biology of Cancer, Salamanca, Spain
| | - Miguel A Peinado
- Program of Predictive and Personalized Medicine of Cancer, Germans Trias i Pujol Research Institute, Can Ruti Campus, Badalona, Spain
| | - Mònica Suelves
- Program of Predictive and Personalized Medicine of Cancer, Germans Trias i Pujol Research Institute, Can Ruti Campus, Badalona, Spain
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Small L, Ingerslev LR, Manitta E, Laker RC, Hansen AN, Deeney B, Carrié A, Couvert P, Barrès R. Ablation of DNA-methyltransferase 3A in skeletal muscle does not affect energy metabolism or exercise capacity. PLoS Genet 2021; 17:e1009325. [PMID: 33513138 PMCID: PMC7875352 DOI: 10.1371/journal.pgen.1009325] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2020] [Revised: 02/10/2021] [Accepted: 01/04/2021] [Indexed: 02/03/2023] Open
Abstract
In response to physical exercise and diet, skeletal muscle adapts to energetic demands through large transcriptional changes. This remodelling is associated with changes in skeletal muscle DNA methylation which may participate in the metabolic adaptation to extracellular stimuli. Yet, the mechanisms by which muscle-borne DNA methylation machinery responds to diet and exercise and impacts muscle function are unknown. Here, we investigated the function of de novo DNA methylation in fully differentiated skeletal muscle. We generated muscle-specific DNA methyltransferase 3A (DNMT3A) knockout mice (mD3AKO) and investigated the impact of DNMT3A ablation on skeletal muscle DNA methylation, exercise capacity and energy metabolism. Loss of DNMT3A reduced DNA methylation in skeletal muscle over multiple genomic contexts and altered the transcription of genes known to be influenced by DNA methylation, but did not affect exercise capacity and whole-body energy metabolism compared to wild type mice. Loss of DNMT3A did not alter skeletal muscle mitochondrial function or the transcriptional response to exercise however did influence the expression of genes involved in muscle development. These data suggest that DNMT3A does not have a large role in the function of mature skeletal muscle although a role in muscle development and differentiation is likely. Skeletal muscle is a plastic tissue able to adapt to environmental stimuli such as exercise and diet in order to respond to energetic demand. One of the ways in which skeletal muscle can rapidly react to these stimuli is DNA methylation. This is when chemical groups are attached to DNA, potentially influencing the transcription of genes. We investigated the function of DNA methylation in skeletal muscle by generating mice that lacked one of the main enzymes responsible for de novo DNA methylation, DNA methyltransferase 3A (DNMT3A), specifically in muscle. We found that loss of DNMT3A reduced DNA methylation in muscle however this did not lead to differences in exercise capacity or energy metabolism. This suggests that DNMT3a is not involved in the adaptation of skeletal muscle to diet or exercise.
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Affiliation(s)
- Lewin Small
- Novo Nordisk Foundation Center for Basic Metabolic Research, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Lars R. Ingerslev
- Novo Nordisk Foundation Center for Basic Metabolic Research, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Eleonora Manitta
- Novo Nordisk Foundation Center for Basic Metabolic Research, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Rhianna C. Laker
- Novo Nordisk Foundation Center for Basic Metabolic Research, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Ann N. Hansen
- Novo Nordisk Foundation Center for Basic Metabolic Research, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Brendan Deeney
- Novo Nordisk Foundation Center for Basic Metabolic Research, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Alain Carrié
- Sorbonne Université-INSERM UMR_S 1166 ICAN, Pitié-Salpêtrière Hospital, Paris, France
| | - Philippe Couvert
- Sorbonne Université-INSERM UMR_S 1166 ICAN, Pitié-Salpêtrière Hospital, Paris, France
| | - Romain Barrès
- Novo Nordisk Foundation Center for Basic Metabolic Research, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
- * E-mail:
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Endo Y, Baldino K, Li B, Zhang Y, Sakthivel D, MacArthur M, Panayi AC, Kip P, Spencer DJ, Jasuja R, Bagchi D, Bhasin S, Nuutila K, Neppl RL, Wagers AJ, Sinha I. Loss of ARNT in skeletal muscle limits muscle regeneration in aging. FASEB J 2020; 34:16086-16104. [PMID: 33064329 PMCID: PMC7756517 DOI: 10.1096/fj.202000761rr] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2020] [Revised: 09/23/2020] [Accepted: 09/28/2020] [Indexed: 12/11/2022]
Abstract
The ability of skeletal muscle to regenerate declines significantly with aging. The expression of aryl hydrocarbon receptor nuclear translocator (ARNT), a critical component of the hypoxia signaling pathway, was less abundant in skeletal muscle of old (23-25 months old) mice. This loss of ARNT was associated with decreased levels of Notch1 intracellular domain (N1ICD) and impaired regenerative response to injury in comparison to young (2-3 months old) mice. Knockdown of ARNT in a primary muscle cell line impaired differentiation in vitro. Skeletal muscle-specific ARNT deletion in young mice resulted in decreased levels of whole muscle N1ICD and limited muscle regeneration. Administration of a systemic hypoxia pathway activator (ML228), which simulates the actions of ARNT, rescued skeletal muscle regeneration in both old and ARNT-deleted mice. These results suggest that the loss of ARNT in skeletal muscle is partially responsible for diminished myogenic potential in aging and activation of hypoxia signaling holds promise for rescuing regenerative activity in old muscle.
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Affiliation(s)
- Yori Endo
- Division of Plastic SurgeryBrigham and Women's HospitalHarvard Medical SchoolBostonMAUSA
| | - Kodi Baldino
- Division of Plastic SurgeryBrigham and Women's HospitalHarvard Medical SchoolBostonMAUSA
| | - Bin Li
- Division of Plastic SurgeryBrigham and Women's HospitalHarvard Medical SchoolBostonMAUSA
- Department of Plastic and Aesthetic SurgeryNanfang HospitalSouthern Medical UniversityGuangzhouChina
| | - Yuteng Zhang
- Division of Plastic SurgeryBrigham and Women's HospitalHarvard Medical SchoolBostonMAUSA
- Department of Plastic and Aesthetic SurgeryNanfang HospitalSouthern Medical UniversityGuangzhouChina
| | | | - Michael MacArthur
- Department of Genetics and Complex DiseasesHarvard School of Public HealthBostonMAUSA
- Division of Vascular and Endovascular SurgeryBrigham and Women's HospitalBostonMAUSA
| | - Adriana C. Panayi
- Division of Plastic SurgeryBrigham and Women's HospitalHarvard Medical SchoolBostonMAUSA
| | - Peter Kip
- Division of Vascular and Endovascular SurgeryBrigham and Women's HospitalBostonMAUSA
| | | | - Ravi Jasuja
- Division of EndocrinologyBrigham and Women's HospitalBostonMAUSA
| | - Debalina Bagchi
- Department of Orthopedic SurgeryBrigham and Women's Hospital, Harvard Medical SchoolBostonMAUSA
| | - Shalender Bhasin
- Division of EndocrinologyBrigham and Women's HospitalBostonMAUSA
| | - Kristo Nuutila
- Division of Plastic SurgeryBrigham and Women's HospitalHarvard Medical SchoolBostonMAUSA
| | - Ronald L. Neppl
- Department of Orthopedic SurgeryBrigham and Women's Hospital, Harvard Medical SchoolBostonMAUSA
| | - Amy J. Wagers
- Joslin Diabetes CenterBostonMAUSA
- Harvard Department of Stem Cell and Regenerative BiologyHarvard Stem Cell InstituteCambridgeMAUSA
- Paul F. Glenn Center for the Biology of AgingHarvard Medical SchoolBostonMAUSA
| | - Indranil Sinha
- Division of Plastic SurgeryBrigham and Women's HospitalHarvard Medical SchoolBostonMAUSA
- Harvard Department of Stem Cell and Regenerative BiologyHarvard Stem Cell InstituteCambridgeMAUSA
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Quiroz HJ, Parikh PP, Lassance-Soares RM, Regueiro MM, Li Y, Shao H, Vazquez-Padron R, Percival J, Liu ZJ, Velazquez OC. Gangrene, revascularization, and limb function improved with E-selectin/adeno-associated virus gene therapy. JVS Vasc Sci 2020; 2:20-32. [PMID: 34617055 PMCID: PMC8489216 DOI: 10.1016/j.jvssci.2020.10.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2020] [Accepted: 10/19/2020] [Indexed: 11/05/2022] Open
Abstract
OBJECTIVE Novel therapeutic angiogenic concepts for critical limb ischemia are still needed for limb salvage. E-selectin, a cell-adhesion molecule, is vital for recruitment of the stem/progenitor cells necessary for neovascularization in ischemic tissues. We hypothesized that priming ischemic limb tissue with E-selectin/adeno-associated virus (AAV) gene therapy, in a murine hindlimb ischemia and gangrene model, would increase therapeutic angiogenesis and improve gangrene. METHODS FVB/NJ mice were given intramuscular hindlimb injections of either E-selectin/AAV or LacZ/AAV and then underwent induction of gangrene via femoral artery ligation and concomitant systemic injections of the nitric oxide synthesis inhibitor L-NAME (L-NG-Nitro arginine methyl ester; 40 mg/kg). Gangrene was evaluated via the Faber hindlimb appearance score. The rate of ischemic limb reperfusion and ischemic tissue angiogenesis were evaluated using laser Doppler perfusion imaging and DiI perfusion with confocal laser scanning microscopy of the ischemic footpads, respectively. The treadmill exhaustion test was performed on postoperative day (POD) 8 to determine hindlimb functionality. RESULTS The E-selectin/AAV-treated mice (n = 10) had decreased Faber ischemia scores compared with those of the LacZ/AAV-treated mice (n = 7) at both PODs 7 and 14 (P < .05 and P < .01, respectively), improved laser Doppler perfusion imaging reperfusion indexes by POD 14 (P < .01), and greater gangrene footpad capillary density (P < .001). E-selectin/AAV-treated mice also had improved exercise tolerance (P < .05) and lower relative muscular atrophy (P < .01). CONCLUSION We surmised that E-selectin/AAV gene therapy would significantly promote hindlimb angiogenesis, reperfusion, and limb functionality in mice with hindlimb ischemia and gangrene. Our findings highlight the reported novel gene therapy approach to critical limb ischemia as a potential therapeutic option for future clinical studies.
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Affiliation(s)
- Hallie J. Quiroz
- Division of Vascular Surgery, DeWitt-Daughtry Family Department of Surgery, University of Miami Leonard M. Miller School of Medicine, Miami, Fla
| | - Punam P. Parikh
- Division of Vascular Surgery, DeWitt-Daughtry Family Department of Surgery, University of Miami Leonard M. Miller School of Medicine, Miami, Fla
| | - Roberta M. Lassance-Soares
- Division of Vascular Surgery, DeWitt-Daughtry Family Department of Surgery, University of Miami Leonard M. Miller School of Medicine, Miami, Fla
| | - Manuela M. Regueiro
- Division of Vascular Surgery, DeWitt-Daughtry Family Department of Surgery, University of Miami Leonard M. Miller School of Medicine, Miami, Fla
| | - Yan Li
- Division of Vascular Surgery, DeWitt-Daughtry Family Department of Surgery, University of Miami Leonard M. Miller School of Medicine, Miami, Fla
| | - Hongwei Shao
- Division of Vascular Surgery, DeWitt-Daughtry Family Department of Surgery, University of Miami Leonard M. Miller School of Medicine, Miami, Fla
| | - Roberto Vazquez-Padron
- Division of Vascular Surgery, DeWitt-Daughtry Family Department of Surgery, University of Miami Leonard M. Miller School of Medicine, Miami, Fla
| | - Justin Percival
- Department of Molecular and Cellular Pharmacology, University of Miami Leonard M. Miller School of Medicine, Miami, Fla
| | - Zhao-Jun Liu
- Division of Vascular Surgery, DeWitt-Daughtry Family Department of Surgery, University of Miami Leonard M. Miller School of Medicine, Miami, Fla
| | - Omaida C. Velazquez
- Division of Vascular Surgery, DeWitt-Daughtry Family Department of Surgery, University of Miami Leonard M. Miller School of Medicine, Miami, Fla
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Peng Y, Yue F, Chen J, Xia W, Huang K, Yang G, Kuang S. Phosphatase orphan 1 inhibits myoblast proliferation and promotes myogenic differentiation. FASEB J 2020; 35:e21154. [PMID: 33140469 DOI: 10.1096/fj.202001672r] [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: 07/07/2020] [Revised: 09/29/2020] [Accepted: 10/16/2020] [Indexed: 01/08/2023]
Abstract
Myogenesis includes sequential stages of progenitor cell proliferation, myogenic commitment and differentiation, myocyte fusion, and myotube maturation. Different stages of myogenesis are orchestrated and regulated by myogenic regulatory factors and various downstream cellular signaling. Here we identify phosphatase orphan 1 (Phospho1) as a new player in myogenesis. During activation, proliferation, and differentiation of quiescent satellite cells, the expression of Phospho1 gradually increases. Overexpression of Phospho1 inhibits myoblast proliferation but promotes their differentiation and fusion. Conversely, knockdown of Phospho1 accelerates myoblast proliferation but impairs myotube formation. Moreover, knockdown of Phospho1 decreases the OXPHO protein levels and mitochondria density, whereas overexpression of Phospho1 upregulates OXPHO protein levels and promotes mitochondrial oxygen consumption. Finally, we show that Phospho1 expression is controlled by myogenin, which binds to the promoter of Phospho1 to regulate its transcription. These results indicate a key role of Phospho1 in regulating myogenic differentiation and mitochondrial function.
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Affiliation(s)
- Ying Peng
- College of Animal Science and Technology, Northwest A&F University, Yangling, China.,Department of Animal Sciences, Purdue University, West Lafayette, IN, USA
| | - Feng Yue
- Department of Animal Sciences, Purdue University, West Lafayette, IN, USA
| | - Jingjuan Chen
- Department of Animal Sciences, Purdue University, West Lafayette, IN, USA
| | - Wei Xia
- Department of Animal Sciences, Purdue University, West Lafayette, IN, USA.,College of Life Science and Technology, Southwest Minzu University, Chengdu, China
| | - Kuilong Huang
- College of Animal Science and Technology, Northwest A&F University, Yangling, China.,Department of Animal Sciences, Purdue University, West Lafayette, IN, USA
| | - Gongshe Yang
- College of Animal Science and Technology, Northwest A&F University, Yangling, China
| | - Shihuan Kuang
- Department of Animal Sciences, Purdue University, West Lafayette, IN, USA
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Abstract
Stem cells (SCs) maintain tissue homeostasis and repair wounds. Despite marked variation in tissue architecture and regenerative demands, SCs often follow similar paradigms in communicating with their microenvironmental "niche" to transition between quiescent and regenerative states. Here we use skin epithelium and skeletal muscle-among the most highly-stressed tissues in our body-to highlight similarities and differences in niche constituents and how SCs mediate natural tissue rejuvenation and perform regenerative acts prompted by injuries. We discuss how these communication networks break down during aging and how understanding tissue SCs has led to major advances in regenerative medicine.
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Affiliation(s)
- Elaine Fuchs
- Robin Chemers Neustein Laboratory of Mammalian Cell Biology and Development, Howard Hughes Medical Institute, The Rockefeller University, New York, NY 10065, USA.
| | - Helen M Blau
- Baxter Foundation Laboratory for Stem Cell Biology, Department of Microbiology and Immunology, Stanford University School of Medicine, Stanford, CA 94305, USA.
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40
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Wang L, Shan T. Factors inducing transdifferentiation of myoblasts into adipocytes. J Cell Physiol 2020; 236:2276-2289. [PMID: 32989814 DOI: 10.1002/jcp.30074] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2020] [Revised: 09/08/2020] [Accepted: 09/14/2020] [Indexed: 12/15/2022]
Abstract
Fat infiltration in skeletal muscle is observed in several myopathies, is associated with muscular dysfunction, and is strongly correlated with insulin resistance, diabetes, obesity, and aging. In animal production, skeletal muscle fat (also known as intermuscular and intramuscular fat) is positively related to meat quality including tenderness, flavor, and juiciness. Thus, understanding the cell origin and regulation mechanism of skeletal muscle fat infiltration is important for developing therapies against human myopathies as well as for improving meat quality. Notably, age, sarcopenia, oxidative stress, injury, and regeneration can activate adipogenic differentiation potential in myoblasts and affect fat accumulation in skeletal muscle. In addition, several transcriptional and nutritional factors can directly induce transdifferentiation of myoblasts into adipocytes. In this review, we focused on the recent progress in understanding the muscle-to-adipocyte differentiation and summarized and discussed the genetic, nutritional, and physiological factors that can induce transdifferentiation of myoblasts into adipocytes. Moreover, the regulatory roles and mechanisms of these factors during the transdifferentiation process were also discussed.
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Affiliation(s)
- Liyi Wang
- College of Animal Sciences, Zhejiang University, Hangzhou, Zhejiang, China
- Key Laboratory of Molecular Animal Nutrition, Ministry of Education, Zhejiang University, Hangzhou, China
- Zhejiang Provincial Laboratory of Feed and Animal Nutrition, Hangzhou, China
| | - Tizhong Shan
- College of Animal Sciences, Zhejiang University, Hangzhou, Zhejiang, China
- Key Laboratory of Molecular Animal Nutrition, Ministry of Education, Zhejiang University, Hangzhou, China
- Zhejiang Provincial Laboratory of Feed and Animal Nutrition, Hangzhou, China
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41
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Li Q, Lin J, Rosen SM, Zhang T, Kazerounian S, Luo S, Agrawal PB. Striated Preferentially Expressed Protein Kinase (SPEG)-Deficient Skeletal Muscles Display Fewer Satellite Cells with Reduced Proliferation and Delayed Differentiation. THE AMERICAN JOURNAL OF PATHOLOGY 2020; 190:2453-2463. [PMID: 32919980 DOI: 10.1016/j.ajpath.2020.08.012] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/06/2020] [Revised: 08/19/2020] [Accepted: 08/27/2020] [Indexed: 12/17/2022]
Abstract
Centronuclear myopathies (CNMs) are a subtype of congenital myopathies characterized by skeletal muscle weakness and an increase in the number of central myonuclei. SPEG (striated preferentially expressed protein kinase) has been identified as the sixth gene associated with CNM, and it has been shown that striated muscle-specific Speg-knockout (KO) mice have defective triad formation, abnormal excitation-contraction coupling, and calcium mishandling. The impact of SPEG deficiency on the survival and function of myogenic cells remains to be deciphered. In this study, the authors examined the overall population, proliferation, and differentiation of myogenic cells obtained from striated muscle-specific Speg-KO mice and compared them with wild-type (WT) controls. SPEG-deficient skeletal muscles contained fewer myogenic cells, which on further study demonstrated reduced proliferation and delayed differentiation compared with those from WT muscles. Regenerative response to skeletal muscle injury in Speg-KO mice was compared with that of WT mice, leading to the identification of similar abnormalities including fewer satellite cells, fewer dividing cells, and an increase in apoptotic cells in KO mice. Overall, these results reveal specific abnormalities in myogenic cell number and behavior associated with SPEG deficiency. Similar satellite cell defects have been reported in mouse models of MTM1- and DNM2-associated CNM, suggestive of shared underlying pathways.
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Affiliation(s)
- Qifei Li
- Division of Newborn Medicine, Boston Children's Hospital and Harvard Medical School, Boston, Massachusetts; Division of Genetics and Genomics, Boston Children's Hospital and Harvard Medical School, Boston, Massachusetts; The Manton Center for Orphan Disease Research, Boston Children's Hospital and Harvard Medical School, Boston, Massachusetts
| | - Jasmine Lin
- Division of Newborn Medicine, Boston Children's Hospital and Harvard Medical School, Boston, Massachusetts; Division of Genetics and Genomics, Boston Children's Hospital and Harvard Medical School, Boston, Massachusetts; The Manton Center for Orphan Disease Research, Boston Children's Hospital and Harvard Medical School, Boston, Massachusetts
| | - Samantha M Rosen
- Division of Newborn Medicine, Boston Children's Hospital and Harvard Medical School, Boston, Massachusetts; Division of Genetics and Genomics, Boston Children's Hospital and Harvard Medical School, Boston, Massachusetts; The Manton Center for Orphan Disease Research, Boston Children's Hospital and Harvard Medical School, Boston, Massachusetts
| | - Tian Zhang
- Division of Newborn Medicine, Boston Children's Hospital and Harvard Medical School, Boston, Massachusetts; The Manton Center for Orphan Disease Research, Boston Children's Hospital and Harvard Medical School, Boston, Massachusetts
| | - Shideh Kazerounian
- Division of Genetics and Genomics, Boston Children's Hospital and Harvard Medical School, Boston, Massachusetts; The Manton Center for Orphan Disease Research, Boston Children's Hospital and Harvard Medical School, Boston, Massachusetts
| | - Shiyu Luo
- Division of Newborn Medicine, Boston Children's Hospital and Harvard Medical School, Boston, Massachusetts; Division of Genetics and Genomics, Boston Children's Hospital and Harvard Medical School, Boston, Massachusetts; The Manton Center for Orphan Disease Research, Boston Children's Hospital and Harvard Medical School, Boston, Massachusetts
| | - Pankaj B Agrawal
- Division of Newborn Medicine, Boston Children's Hospital and Harvard Medical School, Boston, Massachusetts; Division of Genetics and Genomics, Boston Children's Hospital and Harvard Medical School, Boston, Massachusetts; The Manton Center for Orphan Disease Research, Boston Children's Hospital and Harvard Medical School, Boston, Massachusetts.
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Rønning SB, Carlson CR, Aronsen JM, Pisconti A, Høst V, Lunde M, Liland KH, Sjaastad I, Kolset SO, Christensen G, Pedersen ME. Syndecan-4 -/- Mice Have Smaller Muscle Fibers, Increased Akt/mTOR/S6K1 and Notch/HES-1 Pathways, and Alterations in Extracellular Matrix Components. Front Cell Dev Biol 2020; 8:730. [PMID: 32850844 PMCID: PMC7411008 DOI: 10.3389/fcell.2020.00730] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2020] [Accepted: 07/15/2020] [Indexed: 12/11/2022] Open
Abstract
Background Extracellular matrix (ECM) remodeling is essential for skeletal muscle development and adaption in response to environmental cues such as exercise and injury. The cell surface proteoglycan syndecan-4 has been reported to be essential for muscle differentiation, but few molecular mechanisms are known. Syndecan-4–/– mice are unable to regenerate damaged muscle, and display deficient satellite cell activation, proliferation, and differentiation. A reduced myofiber basal lamina has also been reported in syndecan-4–/– muscle, indicating possible defects in ECM production. To get a better understanding of the underlying molecular mechanisms, we have here investigated the effects of syndecan-4 genetic ablation on molecules involved in ECM remodeling and muscle growth, both under steady state conditions and in response to exercise. Methods Tibialis anterior (TA) muscles from sedentary and exercised syndecan-4–/– and WT mice were analyzed by immunohistochemistry, real-time PCR and western blotting. Results Compared to WT, we found that syndecan-4–/– mice had reduced body weight, reduced muscle weight, muscle fibers with a smaller cross-sectional area, and reduced expression of myogenic regulatory transcription factors. Sedentary syndecan-4–/– had also increased mRNA levels of syndecan-2, decorin, collagens, fibromodulin, biglycan, and LOX. Some of these latter ECM components were reduced at protein level, suggesting them to be more susceptible to degradation or less efficiently translated when syndecan-4 is absent. At the protein level, TRPC7 was reduced, whereas activation of the Akt/mTOR/S6K1 and Notch/HES-1 pathways were increased. Finally, although exercise induced upregulation of several of these components in WT, a further upregulation of these molecules was not observed in exercised syndecan-4–/– mice. Conclusion Altogether our data suggest an important role of syndecan-4 in muscle development.
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Affiliation(s)
| | - Cathrine Rein Carlson
- Institute for Experimental Medical Research, Oslo University Hospital and University of Oslo, Oslo, Norway
| | - Jan Magnus Aronsen
- Institute for Experimental Medical Research, Oslo University Hospital and University of Oslo, Oslo, Norway.,Bjørknes College, Oslo, Norway
| | - Addolorata Pisconti
- Department of Biochemistry and Cell Biology, Stony Brook University, Stony Brook, NY, United States
| | | | - Marianne Lunde
- Institute for Experimental Medical Research, Oslo University Hospital and University of Oslo, Oslo, Norway
| | - Kristian Hovde Liland
- Nofima AS, Ås, Norway.,Faculty of Sciences and Technology, Norwegian University of Life Sciences, Ås, Norway
| | - Ivar Sjaastad
- Institute for Experimental Medical Research, Oslo University Hospital and University of Oslo, Oslo, Norway.,K.G. Jebsen Center for Cardiac Research, University of Oslo, Oslo, Norway
| | - Svein Olav Kolset
- Department of Nutrition, Institute of Basic Medical Sciences, University of Oslo, Oslo, Norway
| | - Geir Christensen
- Institute for Experimental Medical Research, Oslo University Hospital and University of Oslo, Oslo, Norway.,K.G. Jebsen Center for Cardiac Research, University of Oslo, Oslo, Norway
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Sakai-Takemura F, Nogami K, Elhussieny A, Kawabata K, Maruyama Y, Hashimoto N, Takeda S, Miyagoe-Suzuki Y. Prostaglandin EP2 receptor downstream of Notch signaling inhibits differentiation of human skeletal muscle progenitors in differentiation conditions. Commun Biol 2020; 3:182. [PMID: 32313117 PMCID: PMC7171165 DOI: 10.1038/s42003-020-0904-6] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2019] [Accepted: 03/20/2020] [Indexed: 11/17/2022] Open
Abstract
Understanding the signaling pathways that regulate proliferation and differentiation of muscle progenitors is essential for successful cell transplantation for treatment of Duchenne muscular dystrophy. Here, we report that a γ-secretase inhibitor, DAPT (N-[N-(3,5-difluorophenacetyl-L-alanyl)]-S-phenylglycine tertial butyl ester), which inhibits the release of NICD (Notch intercellular domain), promotes the fusion of human muscle progenitors in vitro and improves their engraftment in the tibialis anterior muscle of immune-deficient mice. Gene expression analysis revealed that DAPT severely down-regulates PTGER2, which encodes prostaglandin (PG) E2 receptor 2 (EP2), in human muscle progenitors in the differentiation condition. Functional analysis suggested that Notch signaling inhibits differentiation and promotes self-renewal of human muscle progenitors via PGE2/EP2 signaling in a cAMP/PKA-independent manner.
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Affiliation(s)
- Fusako Sakai-Takemura
- Department of Molecular Therapy, National Institute of Neuroscience, National Center of Neurology and Psychiatry, Tokyo, Japan
| | - Ken'ichiro Nogami
- Department of Molecular Therapy, National Institute of Neuroscience, National Center of Neurology and Psychiatry, Tokyo, Japan.,Department of Neurology, Neurological Institute, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Ahmed Elhussieny
- Department of Molecular Therapy, National Institute of Neuroscience, National Center of Neurology and Psychiatry, Tokyo, Japan.,Department of Neurology, Faculty of Medicine, Minia University, Minia, Egypt
| | - Kota Kawabata
- Department of Molecular Therapy, National Institute of Neuroscience, National Center of Neurology and Psychiatry, Tokyo, Japan
| | - Yusuke Maruyama
- Department of Molecular Therapy, National Institute of Neuroscience, National Center of Neurology and Psychiatry, Tokyo, Japan
| | - Naohiro Hashimoto
- Department of Regenerative Medicine, National Institute for Longevity Sciences, National Center for Geriatrics and Gerontology, Aichi, Japan
| | - Shin'ichi Takeda
- Department of Molecular Therapy, National Institute of Neuroscience, National Center of Neurology and Psychiatry, Tokyo, Japan
| | - Yuko Miyagoe-Suzuki
- Department of Molecular Therapy, National Institute of Neuroscience, National Center of Neurology and Psychiatry, Tokyo, Japan.
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44
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Wang W, Wang J, Lin W, Kao C, Hung M, Teng Y, Tsai T, Chi Y. Progerin in muscle leads to thermogenic and metabolic defects via impaired calcium homeostasis. Aging Cell 2020; 19:e13090. [PMID: 31833196 PMCID: PMC6996945 DOI: 10.1111/acel.13090] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2019] [Revised: 10/26/2019] [Accepted: 11/21/2019] [Indexed: 12/19/2022] Open
Abstract
Mutations in lamin A (LMNA) are responsible for a variety of human dystrophic and metabolic diseases. Here, we created a mouse model in which progerin, the lamin A mutant protein that causes Hutchinson–Gilford progeria syndrome (HGPS), can be inducibly overexpressed. Muscle‐specific overexpression of progerin was sufficient to induce muscular dystrophy and alter whole‐body energy expenditure, leading to premature death. Intriguingly, sarcolipin (Sln), an endoplasmic reticulum (ER)‐associated protein involved in heat production, is upregulated in progerin‐expressing and Lmna knockout (Lmna−/−) skeletal muscle. The depletion of Sln accelerated the early death of Lmna−/− mice. An examination at the molecular level revealed that progerin recruits Sln and Calnexin to the nuclear periphery. Furthermore, progerin‐expressing myoblasts presented enhanced store‐operated Ca2+ entry, as well as increased co‐localization of STIM1 and ORAI1. These findings suggest that progerin dysregulates calcium homeostasis through an interaction with a subset of ER‐associated proteins, resulting in thermogenic and metabolic abnormalities.
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Affiliation(s)
- Wan‐Ping Wang
- Institute of Biotechnology and Pharmaceutical Research National Health Research Institutes Zhunan Taiwan
| | - Jing‐Ya Wang
- Institute of Biotechnology and Pharmaceutical Research National Health Research Institutes Zhunan Taiwan
| | - Wen‐Hsin Lin
- Institute of Biotechnology and Pharmaceutical Research National Health Research Institutes Zhunan Taiwan
| | - Cheng‐Heng Kao
- Center of General Education Chang Gung University Taoyuan Taiwan
| | - Ming‐Chun Hung
- Institute of Biotechnology and Pharmaceutical Research National Health Research Institutes Zhunan Taiwan
| | - Yuan‐Chi Teng
- Department of Life Sciences and Institute of Genome Sciences National Yang‐Ming University Taipei Taiwan
| | - Ting‐Fen Tsai
- Institute of Biotechnology and Pharmaceutical Research National Health Research Institutes Zhunan Taiwan
- Department of Life Sciences and Institute of Genome Sciences National Yang‐Ming University Taipei Taiwan
| | - Ya‐Hui Chi
- Institute of Biotechnology and Pharmaceutical Research National Health Research Institutes Zhunan Taiwan
- Graduate Institute of Biomedical Sciences China Medical University Taichung Taiwan
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45
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Hauck JS, Howard ZM, Lowe J, Rastogi N, Pico MG, Swager SA, Petrosino JM, Gomez-Sanchez CE, Gomez-Sanchez EP, Accornero F, Rafael-Fortney JA. Mineralocorticoid Receptor Signaling Contributes to Normal Muscle Repair After Acute Injury. Front Physiol 2019; 10:1324. [PMID: 31736768 PMCID: PMC6830343 DOI: 10.3389/fphys.2019.01324] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2019] [Accepted: 10/03/2019] [Indexed: 01/11/2023] Open
Abstract
Acute skeletal muscle injury is followed by a temporal response of immune cells, fibroblasts, and muscle progenitor cells within the muscle microenvironment to restore function. These same cell types are repeatedly activated in muscular dystrophy from chronic muscle injury, but eventually, the regenerative portion of the cycle is disrupted and fibrosis replaces degenerated muscle fibers. Mineralocorticoid receptor (MR) antagonist drugs have been demonstrated to increase skeletal muscle function, decrease fibrosis, and directly improve membrane integrity in muscular dystrophy mice, and therefore are being tested clinically. Conditional knockout of MR from muscle fibers in muscular dystrophy mice also improves skeletal muscle function and decreases fibrosis. The mechanism of efficacy likely results from blocking MR signaling by its endogenous agonist aldosterone, being produced at high local levels in regions of muscle damage by infiltrating myeloid cells. Since chronic and acute injuries share the same cellular processes to regenerate muscle, and MR antagonists are clinically used for a wide variety of conditions, it is crucial to define the role of MR signaling in normal muscle repair after injury. In this study, we performed acute injuries using barium chloride injections into tibialis anterior muscles both in myofiber MR conditional knockout mice on a wild-type background (MRcko) and in MR antagonist-treated wild-type mice. Steps of the muscle regeneration response were analyzed at 1, 4, 7, or 14 days after injury. Presence of the aldosterone synthase enzyme was also assessed during the injury repair process. We show for the first time aldosterone synthase localization in infiltrating immune cells of normal skeletal muscle after acute injury. MRcko mice had an increased muscle area infiltrated by aldosterone synthase positive myeloid cells compared to control injured animals. Both MRcko and MR antagonist treatment stabilized damaged myofibers and increased collagen infiltration or compaction at 4 days post-injury. MR antagonist treatment also led to reduced myofiber size at 7 and 14 days post-injury. These data support that MR signaling contributes to the normal muscle repair process following acute injury. MR antagonist treatment delays muscle fiber growth, so temporary discontinuation of these drugs after a severe muscle injury could be considered.
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Affiliation(s)
- J. Spencer Hauck
- Department of Physiology and Cell Biology, College of Medicine, The Ohio State University, Columbus, OH, United States
| | - Zachary M. Howard
- Department of Physiology and Cell Biology, College of Medicine, The Ohio State University, Columbus, OH, United States
| | - Jeovanna Lowe
- Department of Physiology and Cell Biology, College of Medicine, The Ohio State University, Columbus, OH, United States
| | - Neha Rastogi
- Department of Physiology and Cell Biology, College of Medicine, The Ohio State University, Columbus, OH, United States
| | - Madison G. Pico
- Department of Physiology and Cell Biology, College of Medicine, The Ohio State University, Columbus, OH, United States
| | - Sarah A. Swager
- Department of Physiology and Cell Biology, College of Medicine, The Ohio State University, Columbus, OH, United States
| | - Jennifer M. Petrosino
- Department of Physiology and Cell Biology, College of Medicine, The Ohio State University, Columbus, OH, United States
- Dorothy M. Davis Heart and Lung Research Institute, College of Medicine, The Ohio State University, Columbus, OH, United States
| | - Celso E. Gomez-Sanchez
- Department of Internal Medicine, University of Mississippi Medical Center, Jackson, MS, United States
| | - Elise P. Gomez-Sanchez
- Department of Pharmacology and Toxicology, University of Mississippi Medical Center, Jackson, MS, United States
| | - Federica Accornero
- Department of Physiology and Cell Biology, College of Medicine, The Ohio State University, Columbus, OH, United States
- Dorothy M. Davis Heart and Lung Research Institute, College of Medicine, The Ohio State University, Columbus, OH, United States
| | - Jill A. Rafael-Fortney
- Department of Physiology and Cell Biology, College of Medicine, The Ohio State University, Columbus, OH, United States
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46
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Marinkovic M, Fuoco C, Sacco F, Cerquone Perpetuini A, Giuliani G, Micarelli E, Pavlidou T, Petrilli LL, Reggio A, Riccio F, Spada F, Vumbaca S, Zuccotti A, Castagnoli L, Mann M, Gargioli C, Cesareni G. Fibro-adipogenic progenitors of dystrophic mice are insensitive to NOTCH regulation of adipogenesis. Life Sci Alliance 2019; 2:e201900437. [PMID: 31239312 PMCID: PMC6599969 DOI: 10.26508/lsa.201900437] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2019] [Accepted: 06/07/2019] [Indexed: 12/14/2022] Open
Abstract
Fibro-adipogenic progenitors (FAPs) promote satellite cell differentiation in adult skeletal muscle regeneration. However, in pathological conditions, FAPs are responsible for fibrosis and fatty infiltrations. Here we show that the NOTCH pathway negatively modulates FAP differentiation both in vitro and in vivo. However, FAPs isolated from young dystrophin-deficient mdx mice are insensitive to this control mechanism. An unbiased mass spectrometry-based proteomic analysis of FAPs from muscles of wild-type and mdx mice suggested that the synergistic cooperation between NOTCH and inflammatory signals controls FAP differentiation. Remarkably, we demonstrated that factors released by hematopoietic cells restore the sensitivity to NOTCH adipogenic inhibition in mdx FAPs. These results offer a basis for rationalizing pathological ectopic fat infiltrations in skeletal muscle and may suggest new therapeutic strategies to mitigate the detrimental effects of fat depositions in muscles of dystrophic patients.
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Affiliation(s)
| | - Claudia Fuoco
- Department of Biology, University of Rome Tor Vergata, Rome, Italy
| | - Francesca Sacco
- Department of Biology, University of Rome Tor Vergata, Rome, Italy
- Department of Proteomics and Signal Transduction, Max-Planck Institute of Biochemistry, Martinsried, Germany
| | | | - Giulio Giuliani
- Department of Biology, University of Rome Tor Vergata, Rome, Italy
| | - Elisa Micarelli
- Department of Biology, University of Rome Tor Vergata, Rome, Italy
| | | | | | - Alessio Reggio
- Department of Biology, University of Rome Tor Vergata, Rome, Italy
| | - Federica Riccio
- Department of Biology, University of Rome Tor Vergata, Rome, Italy
| | - Filomena Spada
- Department of Biology, University of Rome Tor Vergata, Rome, Italy
| | - Simone Vumbaca
- Department of Biology, University of Rome Tor Vergata, Rome, Italy
| | | | - Luisa Castagnoli
- Department of Biology, University of Rome Tor Vergata, Rome, Italy
| | - Matthias Mann
- Department of Proteomics and Signal Transduction, Max-Planck Institute of Biochemistry, Martinsried, Germany
| | - Cesare Gargioli
- Department of Biology, University of Rome Tor Vergata, Rome, Italy
| | - Gianni Cesareni
- Department of Biology, University of Rome Tor Vergata, Rome, Italy
- Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS) Fondazione Santa Lucia, Rome, Italy
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47
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Chen B, Shan T. The role of satellite and other functional cell types in muscle repair and regeneration. J Muscle Res Cell Motil 2019; 40:1-8. [PMID: 30968305 DOI: 10.1007/s10974-019-09511-3] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2018] [Accepted: 04/04/2019] [Indexed: 12/21/2022]
Abstract
Skeletal muscles play essential roles in physiological processes, including motor function, energy hemostasis, and respiration. Skeletal muscles also have the capacity to regenerate after injury. Regeneration of skeletal muscle is an extremely complex biological process, which involves multiple cell types. Skeletal muscle stem cells (also known as satellite cells; SCs) are crucial for the development, growth, maintenance and repair of the skeletal muscle. Cell fates and function have been extensively studied in the context of skeletal muscle regeneration. In addition to SCs, other cell types, such as fibro-adipogenic precursors (FAPs), endothelial cells, fibroblasts, pericytes and certain immune cells, play important regulatory roles during skeletal muscle regeneration. In this review, we summarize and discuss the current research progress on the different cell types and their respective functions in skeletal muscle regeneration and repair.
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Affiliation(s)
- Bide Chen
- College of Animal Sciences, Zhejiang University; The Key Laboratory of Molecular Animal Nutrition, Ministry of Education; Zhejiang Provincial Laboratory of Feed and Animal Nutrition, No. 866 Yuhangtang Road, Hangzhou, 310058, Zhejiang, People's Republic of China
| | - Tizhong Shan
- College of Animal Sciences, Zhejiang University; The Key Laboratory of Molecular Animal Nutrition, Ministry of Education; Zhejiang Provincial Laboratory of Feed and Animal Nutrition, No. 866 Yuhangtang Road, Hangzhou, 310058, Zhejiang, People's Republic of China.
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48
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You JS, McNally RM, Jacobs BL, Privett RE, Gundermann DM, Lin KH, Steinert ND, Goodman CA, Hornberger TA. The role of raptor in the mechanical load-induced regulation of mTOR signaling, protein synthesis, and skeletal muscle hypertrophy. FASEB J 2019; 33:4021-4034. [PMID: 30509128 PMCID: PMC6404572 DOI: 10.1096/fj.201801653rr] [Citation(s) in RCA: 90] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2018] [Accepted: 11/05/2018] [Indexed: 12/21/2022]
Abstract
It is well known that an increase in mechanical loading can induce skeletal muscle hypertrophy, and a long standing model in the field indicates that mechanical loads induce hypertrophy via a mechanism that requires signaling through the mechanistic target of rapamycin complex 1 (mTORC1). Specifically, it has been widely proposed that mechanical loads activate signaling through mTORC1 and that this, in turn, promotes an increase in the rate of protein synthesis and the subsequent hypertrophic response. However, this model is based on a number of important assumptions that have not been rigorously tested. In this study, we created skeletal muscle specific and inducible raptor knockout mice to eliminate signaling by mTORC1, and with these mice we were able to directly demonstrate that mechanical stimuli can activate signaling by mTORC1, and that mTORC1 is necessary for mechanical load-induced hypertrophy. Surprisingly, however, we also obtained multiple lines of evidence that indicate that mTORC1 is not required for a mechanical load-induced increase in the rate of protein synthesis. This observation highlights an important shortcoming in our understanding of how mechanical loads induce hypertrophy and illustrates that additional mTORC1-independent mechanisms play a critical role in this process.-You, J.-S., McNally, R. M., Jacobs, B. L., Privett, R. E., Gundermann, D. M., Lin, K.-H., Steinert, N. D., Goodman, C. A., Hornberger, T. A. The role of raptor in the mechanical load-induced regulation of mTOR signaling, protein synthesis, and skeletal muscle hypertrophy.
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Affiliation(s)
- Jae-Sung You
- Department of Comparative Biosciences, University of Wisconsin–Madison, Madison, Wisconsin, USA
- School of Veterinary Medicine, University of Wisconsin–Madison, Madison, Wisconsin, USA
| | - Rachel M. McNally
- Department of Comparative Biosciences, University of Wisconsin–Madison, Madison, Wisconsin, USA
- School of Veterinary Medicine, University of Wisconsin–Madison, Madison, Wisconsin, USA
| | - Brittany L. Jacobs
- Department of Comparative Biosciences, University of Wisconsin–Madison, Madison, Wisconsin, USA
- School of Veterinary Medicine, University of Wisconsin–Madison, Madison, Wisconsin, USA
| | - Rachel E. Privett
- Department of Comparative Biosciences, University of Wisconsin–Madison, Madison, Wisconsin, USA
- School of Veterinary Medicine, University of Wisconsin–Madison, Madison, Wisconsin, USA
| | - David M. Gundermann
- Department of Comparative Biosciences, University of Wisconsin–Madison, Madison, Wisconsin, USA
- School of Veterinary Medicine, University of Wisconsin–Madison, Madison, Wisconsin, USA
| | - Kuan-Hung Lin
- Department of Comparative Biosciences, University of Wisconsin–Madison, Madison, Wisconsin, USA
- School of Veterinary Medicine, University of Wisconsin–Madison, Madison, Wisconsin, USA
| | - Nate D. Steinert
- Department of Comparative Biosciences, University of Wisconsin–Madison, Madison, Wisconsin, USA
- School of Veterinary Medicine, University of Wisconsin–Madison, Madison, Wisconsin, USA
| | - Craig A. Goodman
- Department of Comparative Biosciences, University of Wisconsin–Madison, Madison, Wisconsin, USA
- School of Veterinary Medicine, University of Wisconsin–Madison, Madison, Wisconsin, USA
- Institute of Health and Sport, Victoria University, Melbourne, Victoria, Australia
- Australian Institute for Musculoskeletal Science, Victoria University, St. Albans, Victoria, Australia
| | - Troy A. Hornberger
- Department of Comparative Biosciences, University of Wisconsin–Madison, Madison, Wisconsin, USA
- School of Veterinary Medicine, University of Wisconsin–Madison, Madison, Wisconsin, USA
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Loss of microRNA-23-27-24 clusters in skeletal muscle is not influential in skeletal muscle development and exercise-induced muscle adaptation. Sci Rep 2019; 9:1092. [PMID: 30705375 PMCID: PMC6355808 DOI: 10.1038/s41598-018-37765-3] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2018] [Accepted: 12/06/2018] [Indexed: 01/21/2023] Open
Abstract
MicroRNAs are small regulatory noncoding RNAs that repress gene expression at the posttranscriptional level. Previous studies have reported that the expression of miR-23, miR-27, and miR-24, driven from two miR-23–27–24 clusters, is altered by various pathophysiological conditions. However, their functions in skeletal muscle have not been clarified. To define the roles of the miR-23–27–24 clusters in skeletal muscle, we generated double-knockout (dKO) mice muscle-specifically lacking the miR-23–27–24 clusters. The dKO mice were viable and showed normal growth. The contractile and metabolic features of the muscles, represented by the expression of the myosin heavy chain and the oxidative markers PGC1-α and COX IV, were not altered in the dKO mice compared with wild-type mice. The dKO mice showed increased cross-sectional areas of the oxidative fibers. However, this dKO did not induce functional changes in the muscles. The dKO mice also showed normal adaptation to voluntary wheel running for 4 weeks, including the glycolytic-to-oxidative fiber type switch, and increases in mitochondrial markers, succinate dehydrogenase activity, and angiogenesis. In conclusion, our data demonstrate that the miR-23–27–24 clusters have subtle effects on skeletal muscle development and endurance-exercise-induced muscle adaptation.
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50
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Whitehouse LM, Manzon RG. Hypoxia alters the expression of hif-1a mRNA and downstream HIF-1 response genes in embryonic and larval lake whitefish (Coregonus clupeaformis). Comp Biochem Physiol A Mol Integr Physiol 2019; 230:81-90. [PMID: 30659950 DOI: 10.1016/j.cbpa.2019.01.005] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2018] [Revised: 12/27/2018] [Accepted: 01/06/2019] [Indexed: 12/12/2022]
Abstract
Lake whitefish (Coregonus clupeaformis) embryos and larvae were exposed to hypoxia at different developmental ages to determine when the cellular response to hypoxia could be initiated. mRNA levels of hypoxia-inducible factor 1α (hif-1α), hsp70, and several HIF-1 target genes were quantified in embryos at 21, 38, 63, 83- and 103-days post fertilisation (dpf) and in larvae at 1, 2, 3- and 4-weeks post hatch (wph) following a 6-hour hypoxia exposure. hsp70 mRNA levels were increased in response to hypoxia at all embryonic ages. By comparison, the first observed change in hif-1α mRNA in response to hypoxia was at 38 dpf, where it was down-regulated from high basal levels, with this response persisting through to 83 dpf. Interestingly, this decrease in hif-1α mRNA coincided with increases in the mRNA levels of the HIF-1 target genes: vegfa (vascular endothelial growth factor A), igfbp1 (insulin-like growth factor binding protein 1), ldha (lactate dehydrogenase a), gapdh (glyceraldehyde-3-phosphate dehydrogenase) and epo (erythropoietin) at select ages. Collectively, this suggests a possible HIF-1-mediated response to hypoxia despite a decrease in hif-1α mRNA. Coinciding with a decrease in basal levels, increases in hif-1α were measured in response to hypoxia at 103 dpf and in larval fish at 1, 2 and 3 wph but there were no consistent increases in HIF-1 target genes at these ages. Overall, our findings indicate that lake whitefish can mount a response to hypoxia early in embryogenesis which may mitigate some of the damaging effects of exposure to low oxygen levels at these critical life history stages.
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Affiliation(s)
- Lindy M Whitehouse
- Department of Biology, University of Regina, 3737 Wascana Parkway, Regina, SK S4S 0A2, Canada
| | - Richard G Manzon
- Department of Biology, University of Regina, 3737 Wascana Parkway, Regina, SK S4S 0A2, Canada.
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