1
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Motohashi N, Minegishi K, Aoki Y. Inherited myogenic abilities in muscle precursor cells defined by the mitochondrial complex I-encoding protein. Cell Death Dis 2023; 14:689. [PMID: 37857600 PMCID: PMC10587152 DOI: 10.1038/s41419-023-06192-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2023] [Revised: 09/18/2023] [Accepted: 09/28/2023] [Indexed: 10/21/2023]
Abstract
Skeletal muscle comprises different muscle fibers, including slow- and fast-type muscles, and satellite cells (SCs), which exist in individual muscle fibers and possess different myogenic properties. Previously, we reported that myoblasts (MBs) from slow-type enriched soleus (SOL) had a high potential to self-renew compared with cells derived from fast-type enriched tibialis anterior (TA). However, whether the functionality of myogenic cells in adult muscles is attributed to the muscle fiber in which they reside and whether the characteristics of myogenic cells derived from slow- and fast-type fibers can be distinguished at the genetic level remain unknown. Global gene expression analysis revealed that the myogenic potential of MBs was independent of the muscle fiber type they reside in but dependent on the region of muscles they are derived from. Thus, in this study, proteomic analysis was conducted to clarify the molecular differences between MBs derived from TA and SOL. NADH dehydrogenase (ubiquinone) iron-sulfur protein 8 (Ndufs8), a subunit of NADH dehydrogenase in mitochondrial complex I, significantly increased in SOL-derived MBs compared with that in TA-derived cells. Moreover, the expression level of Ndufs8 in MBs significantly decreased with age. Gain- and loss-of-function experiments revealed that Ndufs8 expression in MBs promoted differentiation, self-renewal, and apoptosis resistance. In particular, Ndufs8 suppression in MBs increased p53 acetylation, followed by a decline in NAD/NADH ratio. Nicotinamide mononucleotide treatment, which restores the intracellular NAD+ level, could decrease p53 acetylation and increase myogenic cell self-renewal ability in vivo. These results suggested that the functional differences in MBs derived from SOL and TA governed by the mitochondrial complex I-encoding gene reflect the magnitude of the decline in SC number observed with aging, indicating that the replenishment of NAD+ is a possible approach for improving impaired cellular functions caused by aging or diseases.
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Affiliation(s)
- Norio Motohashi
- Department of Molecular Therapy, National Institute of Neuroscience, National Center of Neurology and Psychiatry (NCNP), Tokyo, 187-8502, Japan.
| | - Katsura Minegishi
- Department of Molecular Therapy, National Institute of Neuroscience, National Center of Neurology and Psychiatry (NCNP), Tokyo, 187-8502, Japan
| | - Yoshitsugu Aoki
- Department of Molecular Therapy, National Institute of Neuroscience, National Center of Neurology and Psychiatry (NCNP), Tokyo, 187-8502, Japan.
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2
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Bouredji Z, Hamoudi D, Marcadet L, Argaw A, Frenette J. Testing the efficacy of a human full-length OPG-Fc analog in a severe model of cardiotoxin-induced skeletal muscle injury and repair. MOLECULAR THERAPY-METHODS & CLINICAL DEVELOPMENT 2021; 21:559-573. [PMID: 33997104 PMCID: PMC8102421 DOI: 10.1016/j.omtm.2021.03.022] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/04/2020] [Accepted: 03/25/2021] [Indexed: 11/19/2022]
Abstract
Although receptor-activator of nuclear factor κB (RANK), its ligand RANKL, and osteoprotegerin (OPG), which are members of the tumor necrosis factor (TNF) superfamily, were first discovered in bone cells, they are also expressed in other cells, including skeletal muscle. We previously showed that the RANK/RANKL/OPG pathway is involved in the physiopathology of Duchenne muscular dystrophy and that a mouse full-length OPG-Fc (mFL-OPG-Fc) treatment is superior to muscle-specific RANK deletion in protecting dystrophic muscles. Although mFL-OPG-Fc has a beneficial effect in the context of muscular dystrophy, the function of human FL-OPG-Fc (hFL-OPG-Fc) during muscle repair is not yet known. In the present study, we investigated the impacts of an hFL-OPG-Fc treatment following the intramuscular injection of cardiotoxin (CTX). We show that a 7-day hFL-OPG-Fc treatment improved force production of soleus muscle. hFL-OPG-Fc also improved soleus muscle integrity and regeneration by increasing satellite cell density and fiber cross-sectional area, attenuating neutrophil inflammatory cell infiltration at 3 and 7 days post-CTX injury, increasing the anti-inflammatory M2 macrophages 7 days post-CTX injury. hFL-OPG-Fc treatment also favored M2 over M1 macrophage phenotypic polarization in vitro. We show for the first time that hFL-OPG-Fc improved myotube maturation and fusion in vitro and reduced cytotoxicity and cell apoptosis. These findings demonstrate that hFL-OPG-Fc has therapeutic potential for muscle diseases in which repair and regeneration are impaired.
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Affiliation(s)
- Zineb Bouredji
- Centre Hospitalier Universitaire de Québec, Centre de Recherche du Centre Hospitalier de l’Université Laval (CHUQ-CHUL), Axe Neurosciences, Université Laval, Quebec City, QC G1V 4G2, Canada
| | - Dounia Hamoudi
- Centre Hospitalier Universitaire de Québec, Centre de Recherche du Centre Hospitalier de l’Université Laval (CHUQ-CHUL), Axe Neurosciences, Université Laval, Quebec City, QC G1V 4G2, Canada
| | - Laetitia Marcadet
- Centre Hospitalier Universitaire de Québec, Centre de Recherche du Centre Hospitalier de l’Université Laval (CHUQ-CHUL), Axe Neurosciences, Université Laval, Quebec City, QC G1V 4G2, Canada
| | - Anteneh Argaw
- Centre Hospitalier Universitaire de Québec, Centre de Recherche du Centre Hospitalier de l’Université Laval (CHUQ-CHUL), Axe Neurosciences, Université Laval, Quebec City, QC G1V 4G2, Canada
| | - Jérôme Frenette
- Centre Hospitalier Universitaire de Québec, Centre de Recherche du Centre Hospitalier de l’Université Laval (CHUQ-CHUL), Axe Neurosciences, Université Laval, Quebec City, QC G1V 4G2, Canada
- Département de Réadaptation, Faculté de Médecine, Université Laval, Quebec City, QC G1V 0A6, Canada
- Corresponding author: Jérôme Frenette, Centre Hospitalier Universitaire de Québec, Centre de Recherche du Centre Hospitalier de l’Université Laval (CHUQ-CHUL), Axe Neurosciences, Université Laval, Quebec City, QC G1V 4G2, Canada.
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3
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Dalle S, Hiroux C, Poffé C, Ramaekers M, Deldicque L, Koppo K. Cardiotoxin-induced skeletal muscle injury elicits profound changes in anabolic and stress signaling, and muscle fiber type composition. J Muscle Res Cell Motil 2020; 41:375-387. [PMID: 32621158 DOI: 10.1007/s10974-020-09584-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2020] [Accepted: 06/12/2020] [Indexed: 12/20/2022]
Abstract
To improve muscle healing upon injury, it is of importance to understand the interplay of key signaling pathways during muscle regeneration. To study this, mice were injected with cardiotoxin (CTX) or PBS in the Tibialis Anterior muscle and were sacrificed 2, 5 and 12 days upon injection. The time points represent different phases of the regeneration process, i.e. destruction, repair and remodeling, respectively. Two days upon CTX-injection, p-mTORC1 signaling and stress markers such as BiP and p-ERK1/2 were upregulated. Phospho-ERK1/2 and p-mTORC1 peaked at d5, while BiP expression decreased towards PBS levels. Phospho-FOXO decreased 2 and 5 days following CTX-injection, indicative of an increase in catabolic signaling. Furthermore, CTX-injection induced a shift in the fiber type composition, characterized by an initial loss in type IIa fibers at d2 and at d5. At d5, new type IIb fibers appeared, whereas type IIa fibers were recovered at d12. To conclude, CTX-injection severely affected key modulators of muscle metabolism and histology. These data provide useful information for the development of strategies that aim to improve muscle molecular signaling and thereby recovery.
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Affiliation(s)
- Sebastiaan Dalle
- Exercise Physiology Research Group, Department of Movement Sciences, KU Leuven, Tervuursevest 101, 3001, Louvain, Belgium
| | - Charlotte Hiroux
- Exercise Physiology Research Group, Department of Movement Sciences, KU Leuven, Tervuursevest 101, 3001, Louvain, Belgium
| | - Chiel Poffé
- Exercise Physiology Research Group, Department of Movement Sciences, KU Leuven, Tervuursevest 101, 3001, Louvain, Belgium
| | - Monique Ramaekers
- Exercise Physiology Research Group, Department of Movement Sciences, KU Leuven, Tervuursevest 101, 3001, Louvain, Belgium
| | - Louise Deldicque
- Institute of Neuroscience, Université Catholique de Louvain, Place Pierre de Coubertin 1, 1348, Louvain-la-Neuve, Belgium
| | - Katrien Koppo
- Exercise Physiology Research Group, Department of Movement Sciences, KU Leuven, Tervuursevest 101, 3001, Louvain, Belgium.
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4
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Motohashi N, Uezumi A, Asakura A, Ikemoto-Uezumi M, Mori S, Mizunoe Y, Takashima R, Miyagoe-Suzuki Y, Takeda S, Shigemoto K. Tbx1 regulates inherited metabolic and myogenic abilities of progenitor cells derived from slow- and fast-type muscle. Cell Death Differ 2018; 26:1024-1036. [PMID: 30154444 DOI: 10.1038/s41418-018-0186-4] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2018] [Revised: 07/18/2018] [Accepted: 07/27/2018] [Indexed: 11/09/2022] Open
Abstract
Skeletal muscle is divided into slow- and fast-type muscles, which possess distinct contractile and metabolic properties. Myogenic progenitors associated with each muscle fiber type are known to intrinsically commit to specific muscle fiber lineage during embryonic development. However, it is still unclear whether the functionality of postnatal adult myogenic cells is attributable to the muscle fiber in which they reside, and whether the characteristics of myogenic cells derived from slow- and fast-type fibers can be distinguished at the genetic level. In this study, we isolated adult satellite cells from slow- and fast-type muscle individually and observed that satellite cells from each type of muscle generated myotubes expressing myosin heavy chain isoforms similar to their original muscle, and showed different metabolic features. Notably, we discovered that slow muscle-derived cells had low potential to differentiate but high potential to self-renew compared with fast muscle-derived cells. Additionally, cell transplantation experiments of slow muscle-derived cells into fast-type muscle revealed that slow muscle-derived cells could better contribute to myofiber formation and satellite cell constitution than fast muscle-derived cells, suggesting that the recipient muscle fiber type may not affect the predetermined abilities of myogenic cells. Gene expression analyses identified T-box transcriptional factor Tbx1 as a highly expressed gene in fast muscle-derived myoblasts. Gain- and loss-of-function experiments revealed that Tbx1 modulated muscle fiber types and oxidative metabolism in myotubes, and that Tbx1 stimulated myoblast differentiation, but did not regulate myogenic cell self-renewal. Our data suggest that metabolic and myogenic properties of myogenic progenitor cells vary depending on the type of muscle from which they originate, and that Tbx1 expression partially explains the functional differences of myogenic cells derived from fast-type and slow-type muscles.
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Affiliation(s)
- Norio Motohashi
- Department of Geriatric Medicine, Tokyo Metropolitan Institute of Gerontology, Itabashi, Tokyo, 173-0015, Japan. .,Stem Cell Institute, Paul and Sheila Wellstone Muscular Dystrophy Center, Department of Neurology, University of Minnesota Medical School, Minneapolis, MN, 55455, USA.
| | - Akiyoshi Uezumi
- Department of Geriatric Medicine, Tokyo Metropolitan Institute of Gerontology, Itabashi, Tokyo, 173-0015, Japan
| | - Atsushi Asakura
- Stem Cell Institute, Paul and Sheila Wellstone Muscular Dystrophy Center, Department of Neurology, University of Minnesota Medical School, Minneapolis, MN, 55455, USA
| | - Madoka Ikemoto-Uezumi
- Department of Geriatric Medicine, Tokyo Metropolitan Institute of Gerontology, Itabashi, Tokyo, 173-0015, Japan
| | - Shuuichi Mori
- Department of Geriatric Medicine, Tokyo Metropolitan Institute of Gerontology, Itabashi, Tokyo, 173-0015, Japan
| | - Yuhei Mizunoe
- Department of Geriatric Medicine, Tokyo Metropolitan Institute of Gerontology, Itabashi, Tokyo, 173-0015, Japan
| | - Rumi Takashima
- Department of Geriatric Medicine, Tokyo Metropolitan Institute of Gerontology, Itabashi, Tokyo, 173-0015, Japan
| | - Yuko Miyagoe-Suzuki
- Department of Molecular Therapy, National Institute of Neuroscience, National Center of Neurology and Psychiatry, Kodaira, Tokyo, 187-8502, Japan
| | - Shin'ichi Takeda
- Department of Molecular Therapy, National Institute of Neuroscience, National Center of Neurology and Psychiatry, Kodaira, Tokyo, 187-8502, Japan
| | - Kazuhiro Shigemoto
- Department of Geriatric Medicine, Tokyo Metropolitan Institute of Gerontology, Itabashi, Tokyo, 173-0015, Japan
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5
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McGrath AM, Brohlin M, Wiberg R, Kingham PJ, Novikov LN, Wiberg M, Novikova LN. Long-Term Effects of Fibrin Conduit with Human Mesenchymal Stem Cells and Immunosuppression after Peripheral Nerve Repair in a Xenogenic Model. CELL MEDICINE 2018; 10:2155179018760327. [PMID: 32634185 PMCID: PMC6172997 DOI: 10.1177/2155179018760327] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/19/2017] [Revised: 01/07/2018] [Accepted: 01/12/2018] [Indexed: 12/22/2022]
Abstract
Introduction: Previously we showed that a fibrin glue conduit with human mesenchymal stem cells
(hMSCs) and cyclosporine A (CsA) enhanced early nerve regeneration. In this study long
term effects of this conduit are investigated. Methods: In a rat model, the sciatic nerve was repaired with fibrin conduit containing fibrin
matrix, fibrin conduit containing fibrin matrix with CsA treatment and fibrin conduit
containing fibrin matrix with hMSCs and CsA treatment, and also with nerve graft as
control. Results: At 12 weeks 34% of motoneurons of the control group regenerated axons through the
fibrin conduit. CsA treatment alone or with hMSCs resulted in axon regeneration of 67%
and 64% motoneurons respectively. The gastrocnemius muscle weight was reduced in the
conduit with fibrin matrix. The treatment with CsA or CsA with hMSCs induced recovery of
the muscle weight and size of fast type fibers towards the levels of the nerve graft
group. Discussion: The transplantation of hMSCs for peripheral nerve injury should be optimized to
demonstrate their beneficial effects. The CsA may have its own effect on nerve
regeneration.
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Affiliation(s)
- Aleksandra M McGrath
- Department of Integrative Medical Biology, Section for Anatomy, Umeå University, Umeå, Sweden.,Department of Surgical and Perioperative Science, Section for Hand and Plastic Surgery, Norrland's University Hospital, Umeå, Sweden
| | - Maria Brohlin
- Department of Integrative Medical Biology, Section for Anatomy, Umeå University, Umeå, Sweden.,Department of Clinical Microbiology, Infection and Immunology, Umeå University, Umeå, Sweden
| | - Rebecca Wiberg
- Department of Integrative Medical Biology, Section for Anatomy, Umeå University, Umeå, Sweden.,Department of Surgical and Perioperative Science, Section for Hand and Plastic Surgery, Norrland's University Hospital, Umeå, Sweden
| | - Paul J Kingham
- Department of Integrative Medical Biology, Section for Anatomy, Umeå University, Umeå, Sweden
| | - Lev N Novikov
- Department of Integrative Medical Biology, Section for Anatomy, Umeå University, Umeå, Sweden
| | - Mikael Wiberg
- Department of Integrative Medical Biology, Section for Anatomy, Umeå University, Umeå, Sweden.,Department of Surgical and Perioperative Science, Section for Hand and Plastic Surgery, Norrland's University Hospital, Umeå, Sweden
| | - Liudmila N Novikova
- Department of Integrative Medical Biology, Section for Anatomy, Umeå University, Umeå, Sweden
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6
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Koulmann N, Richard‐Bulteau H, Crassous B, Serrurier B, Pasdeloup M, Bigard X, Banzet S. Physical exercise during muscle regeneration improves recovery of the slow/oxidative phenotype. Muscle Nerve 2016; 55:91-100. [DOI: 10.1002/mus.25151] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/13/2016] [Indexed: 01/22/2023]
Affiliation(s)
- Nathalie Koulmann
- Institut de Recherche Biomédicale des Armées, Département Environnements OpérationnelsBretigny‐Sur‐Orge France
- Ecole du Val‐de‐GrâceParis France
| | - Hélène Richard‐Bulteau
- Institut de Recherche Biomédicale des Armées, Département Environnements OpérationnelsBretigny‐Sur‐Orge France
| | - Brigitte Crassous
- Institut de Recherche Biomédicale des Armées, Département Environnements OpérationnelsBretigny‐Sur‐Orge France
| | - Bernard Serrurier
- Institut de Recherche Biomédicale des Armées, Département Environnements OpérationnelsBretigny‐Sur‐Orge France
| | - Marielle Pasdeloup
- Institut de Recherche Biomédicale des Armées, Département Environnements OpérationnelsBretigny‐Sur‐Orge France
| | - Xavier Bigard
- Institut de Recherche Biomédicale des Armées, Département Environnements OpérationnelsBretigny‐Sur‐Orge France
- Ecole du Val‐de‐GrâceParis France
| | - Sébastien Banzet
- Ecole du Val‐de‐GrâceParis France
- Institut de Recherche Biomédicale des Armées, Département Soutien Médico‐Chirurgical des Forces1 rue du lieutenant Raoul Batany92140Clamart France
- INSERM U1197Clamart France
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7
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Mechanical Overloading Increases Maximal Force and Reduces Fragility in Hind Limb Skeletal Muscle from Mdx Mouse. THE AMERICAN JOURNAL OF PATHOLOGY 2015; 185:2012-24. [DOI: 10.1016/j.ajpath.2015.03.027] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2014] [Revised: 01/30/2015] [Accepted: 03/09/2015] [Indexed: 12/20/2022]
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8
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Price FD, von Maltzahn J, Bentzinger CF, Dumont NA, Yin H, Chang NC, Wilson DH, Frenette J, Rudnicki MA. Inhibition of JAK-STAT signaling stimulates adult satellite cell function. Nat Med 2014; 20:1174-81. [PMID: 25194569 PMCID: PMC4191983 DOI: 10.1038/nm.3655] [Citation(s) in RCA: 274] [Impact Index Per Article: 27.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2014] [Accepted: 07/14/2014] [Indexed: 02/08/2023]
Abstract
Diminished regenerative capacity of skeletal muscle occurs during adulthood. We identified a reduction in the intrinsic capacity of murine adult satellite cells to contribute to regeneration and repopulate the niche. Gene expression analysis identified an increase in expression of JAK/STAT signaling targets between 3 week old and 18 month old mice. Knockdown of Jak2 or Stat3 significantly stimulated symmetric satellite stem cell divisions on cultured myofibers. Knockdown of Jak2 or Stat3 in prospectively isolated satellite cells markedly enhanced their ability to repopulate the satellite cell niche. Pharmacological inhibition of Jak2 and Stat3 similarly stimulated symmetric expansion of satellite cells in vitro and their engraftment in vivo. Intramuscular injection of these drugs resulted in a dramatic enhancement of muscle repair and force generation. Together these results reveal intrinsic properties that functionally distinguish adult satellite cells and suggest a promising therapeutic avenue for the treatment of muscle wasting diseases.
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Affiliation(s)
- Feodor D Price
- 1] Sprott Center For Stem Cell Research, Ottawa Hospital Research Institute, Regenerative Medicine Program, Ottawa, Ontario, Canada. [2] Department of Cellular and Molecular Medicine, University of Ottawa, Faculty of Medicine, Ottawa, Ontario, Canada. [3]
| | - Julia von Maltzahn
- 1] Sprott Center For Stem Cell Research, Ottawa Hospital Research Institute, Regenerative Medicine Program, Ottawa, Ontario, Canada. [2] Department of Cellular and Molecular Medicine, University of Ottawa, Faculty of Medicine, Ottawa, Ontario, Canada. [3] [4]
| | - C Florian Bentzinger
- 1] Sprott Center For Stem Cell Research, Ottawa Hospital Research Institute, Regenerative Medicine Program, Ottawa, Ontario, Canada. [2] Department of Cellular and Molecular Medicine, University of Ottawa, Faculty of Medicine, Ottawa, Ontario, Canada
| | - Nicolas A Dumont
- 1] Sprott Center For Stem Cell Research, Ottawa Hospital Research Institute, Regenerative Medicine Program, Ottawa, Ontario, Canada. [2] Department of Cellular and Molecular Medicine, University of Ottawa, Faculty of Medicine, Ottawa, Ontario, Canada
| | - Hang Yin
- 1] Sprott Center For Stem Cell Research, Ottawa Hospital Research Institute, Regenerative Medicine Program, Ottawa, Ontario, Canada. [2] Department of Cellular and Molecular Medicine, University of Ottawa, Faculty of Medicine, Ottawa, Ontario, Canada
| | - Natasha C Chang
- 1] Sprott Center For Stem Cell Research, Ottawa Hospital Research Institute, Regenerative Medicine Program, Ottawa, Ontario, Canada. [2] Department of Cellular and Molecular Medicine, University of Ottawa, Faculty of Medicine, Ottawa, Ontario, Canada
| | - David H Wilson
- Sprott Center For Stem Cell Research, Ottawa Hospital Research Institute, Regenerative Medicine Program, Ottawa, Ontario, Canada
| | - Jérôme Frenette
- Programme de Physiothérapie, Département de Réadaptation, Université Laval, Québec, Canada
| | - Michael A Rudnicki
- 1] Sprott Center For Stem Cell Research, Ottawa Hospital Research Institute, Regenerative Medicine Program, Ottawa, Ontario, Canada. [2] Department of Cellular and Molecular Medicine, University of Ottawa, Faculty of Medicine, Ottawa, Ontario, Canada
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9
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Li Z, Parlakian A, Coletti D, Alonso-Martin S, Hourdé C, Joanne P, Gao-Li J, Blanc J, Ferry A, Paulin D, Xue Z, Agbulut O. Synemin acts as a regulator of signalling molecules during skeletal muscle hypertrophy. J Cell Sci 2014; 127:4589-601. [PMID: 25179606 DOI: 10.1242/jcs.143164] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
Synemin, a type IV intermediate filament (IF) protein, forms a bridge between IFs and cellular membranes. As an A-kinase-anchoring protein, it also provides temporal and spatial targeting of protein kinase A (PKA). However, little is known about its functional roles in either process. To better understand its functions in muscle tissue, we generated synemin-deficient (Synm(-) (/-)) mice. Synm(-) (/-) mice displayed normal development and fertility but showed a mild degeneration and regeneration phenotype in myofibres and defects in sarcolemma membranes. Following mechanical overload, Synm(-) (/-) mice muscles showed a higher hypertrophic capacity with increased maximal force and fatigue resistance compared with control mice. At the molecular level, increased remodelling capacity was accompanied by decreased myostatin (also known as GDF8) and atrogin (also known as FBXO32) expression, and increased follistatin expression. Furthermore, the activity of muscle-mass control molecules (the PKA RIIα subunit, p70S6K and CREB1) was increased in mutant mice. Finally, analysis of muscle satellite cell behaviour suggested that the absence of synemin could affect the balance between self-renewal and differentiation of these cells. Taken together, our results show that synemin is necessary to maintain membrane integrity and regulates signalling molecules during muscle hypertrophy.
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Affiliation(s)
- Zhenlin Li
- Sorbonne Universités, UPMC Univ Paris 06, UMR CNRS 8256/INSERM ERL U1164, Biological Adaptation and Ageing, Institut de Biologie Paris-Seine, Paris, F-75005 France
| | - Ara Parlakian
- Sorbonne Universités, UPMC Univ Paris 06, UMR CNRS 8256/INSERM ERL U1164, Biological Adaptation and Ageing, Institut de Biologie Paris-Seine, Paris, F-75005 France
| | - Dario Coletti
- Sorbonne Universités, UPMC Univ Paris 06, UMR CNRS 8256/INSERM ERL U1164, Biological Adaptation and Ageing, Institut de Biologie Paris-Seine, Paris, F-75005 France
| | - Sonia Alonso-Martin
- Sorbonne Universités, UPMC Univ-Paris 06, INSERM U974, CNRS UMR7215, Institut de Myologie, Paris-France
| | - Christophe Hourdé
- Sorbonne Universités, UPMC Univ Paris 06, UMR CNRS 8256/INSERM ERL U1164, Biological Adaptation and Ageing, Institut de Biologie Paris-Seine, Paris, F-75005 France
| | - Pierre Joanne
- Sorbonne Universités, UPMC Univ Paris 06, UMR CNRS 8256/INSERM ERL U1164, Biological Adaptation and Ageing, Institut de Biologie Paris-Seine, Paris, F-75005 France
| | - Jacqueline Gao-Li
- Sorbonne Universités, UPMC Univ Paris 06, UMR CNRS 8256/INSERM ERL U1164, Biological Adaptation and Ageing, Institut de Biologie Paris-Seine, Paris, F-75005 France
| | - Jocelyne Blanc
- Sorbonne Universités, UPMC Univ Paris 06, UMR CNRS 8256/INSERM ERL U1164, Biological Adaptation and Ageing, Institut de Biologie Paris-Seine, Paris, F-75005 France
| | - Arnaud Ferry
- Sorbonne Universités, UPMC Univ-Paris 06, INSERM U974, CNRS UMR7215, Institut de Myologie, Paris-France
| | - Denise Paulin
- Sorbonne Universités, UPMC Univ Paris 06, UMR CNRS 8256/INSERM ERL U1164, Biological Adaptation and Ageing, Institut de Biologie Paris-Seine, Paris, F-75005 France
| | - Zhigang Xue
- Sorbonne Universités, UPMC Univ Paris 06, UMR CNRS 8256/INSERM ERL U1164, Biological Adaptation and Ageing, Institut de Biologie Paris-Seine, Paris, F-75005 France
| | - Onnik Agbulut
- Sorbonne Universités, UPMC Univ Paris 06, UMR CNRS 8256/INSERM ERL U1164, Biological Adaptation and Ageing, Institut de Biologie Paris-Seine, Paris, F-75005 France
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10
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Ferry A, Joanne P, Hadj-Said W, Vignaud A, Lilienbaum A, Hourdé C, Medja F, Noirez P, Charbonnier F, Chatonnet A, Chevessier F, Nicole S, Agbulut O, Butler-Browne G. Advances in the understanding of skeletal muscle weakness in murine models of diseases affecting nerve-evoked muscle activity, motor neurons, synapses and myofibers. Neuromuscul Disord 2014; 24:960-72. [PMID: 25042397 DOI: 10.1016/j.nmd.2014.06.001] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2014] [Revised: 05/23/2014] [Accepted: 06/01/2014] [Indexed: 12/13/2022]
Abstract
Disease processes and trauma affecting nerve-evoked muscle activity, motor neurons, synapses and myofibers cause different levels of muscle weakness, i.e., reduced maximal force production in response to voluntary activation or nerve stimulation. However, the mechanisms of muscle weakness are not well known. Using murine models of amyotrophic lateral sclerosis (SOD1(G93A) transgenic mice), congenital myasthenic syndrome (AChE knockout mice and Musk(V789M/-) mutant mice), Schwartz-Jampel syndrome (Hspg2(C1532YNEO/C1532YNEO) mutant mice) and traumatic nerve injury (Neurotomized wild-type mice), we show that the reduced maximal activation capacity (the ability of the nerve to maximally activate the muscle) explains 52%, 58% and 100% of severe weakness in respectively SOD1(G93A), Neurotomized and Musk mice, whereas muscle atrophy only explains 37%, 27% and 0%. We also demonstrate that the impaired maximal activation capacity observed in SOD1, Neurotomized, and Musk mice is not highly related to Hdac4 gene upregulation. Moreover, in SOD1 and Neurotomized mice our results suggest LC3, Fn14, Bcl3 and Gadd45a as candidate genes involved in the maintenance of the severe atrophic state. In conclusion, our study indicates that muscle weakness can result from the triggering of different signaling pathways. This knowledge may be helpful in designing therapeutic strategies and finding new drug targets for amyotrophic lateral sclerosis, congenital myasthenic syndrome, Schwartz-Jampel syndrome and nerve injury.
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Affiliation(s)
- Arnaud Ferry
- Université Pierre et Marie Curie - Paris 6, Sorbonne Universités, UMR S794, INSERM U974, CNRS UMR 7215, Institut de Myologie, Paris F-75013, France; Université Paris Descartes, Sorbonne Paris Cité, Paris F-75006, France.
| | - Pierre Joanne
- Université Paris Diderot, Sorbonne Paris Cité, CNRS EAC 4413, Unit of Functional and Adaptive Biology, Laboratory of Stress and Pathologies of the Cytoskeleton, Paris F-75013, France
| | - Wahiba Hadj-Said
- Université Pierre et Marie Curie - Paris 6, Sorbonne Universités, UMR S794, INSERM U974, CNRS UMR 7215, Institut de Myologie, Paris F-75013, France
| | - Alban Vignaud
- Université Pierre et Marie Curie - Paris 6, Sorbonne Universités, UMR S794, INSERM U974, CNRS UMR 7215, Institut de Myologie, Paris F-75013, France
| | - Alain Lilienbaum
- Université Paris Diderot, Sorbonne Paris Cité, CNRS EAC 4413, Unit of Functional and Adaptive Biology, Laboratory of Stress and Pathologies of the Cytoskeleton, Paris F-75013, France
| | - Christophe Hourdé
- Université Pierre et Marie Curie - Paris 6, Sorbonne Universités, UMR S794, INSERM U974, CNRS UMR 7215, Institut de Myologie, Paris F-75013, France
| | - Fadia Medja
- Université Pierre et Marie Curie - Paris 6, Sorbonne Universités, UMR S794, INSERM U974, CNRS UMR 7215, Institut de Myologie, Paris F-75013, France
| | - Philippe Noirez
- Université Paris Descartes, Sorbonne Paris Cité, Laboratoire de Biologie de la Nutrition EA 2498, Paris, France
| | - Frederic Charbonnier
- Université Paris Descartes, Sorbonne Paris Cité, CESeM, UMR 8194 CNRS, Paris F-75006, France
| | - Arnaud Chatonnet
- Universités Montpellier 1 et 2, INRA, UMR 866, Montpellier, France
| | - Frederic Chevessier
- Universitätsklinikum Erlangen, Neuropathologisches Institut, Erlangen, Germany
| | - Sophie Nicole
- Université Pierre et Marie Curie - Paris 6, INSERM U975, Centre de recherche de l'Institut Cerveau Moelle, CNRS UMR 7225, Paris, France
| | - Onnik Agbulut
- Université Paris Diderot, Sorbonne Paris Cité, CNRS EAC 4413, Unit of Functional and Adaptive Biology, Laboratory of Stress and Pathologies of the Cytoskeleton, Paris F-75013, France
| | - Gillian Butler-Browne
- Université Pierre et Marie Curie - Paris 6, Sorbonne Universités, UMR S794, INSERM U974, CNRS UMR 7215, Institut de Myologie, Paris F-75013, France
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Lee ASJ, Anderson JE, Joya JE, Head SI, Pather N, Kee AJ, Gunning PW, Hardeman EC. Aged skeletal muscle retains the ability to fully regenerate functional architecture. BIOARCHITECTURE 2013; 3:25-37. [PMID: 23807088 PMCID: PMC3715540 DOI: 10.4161/bioa.24966] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
While the general understanding of muscle regenerative capacity is that it declines with increasing age due to impairments in the number of muscle progenitor cells and interaction with their niche, studies vary in their model of choice, indices of myogenic repair, muscle of interest and duration of studies. We focused on the net outcome of regeneration, functional architecture, compared across three models of acute muscle injury to test the hypothesis that satellite cells maintain their capacity for effective myogenic regeneration with age. Muscle regeneration in extensor digitorum longus muscle (EDL) of young (3 mo-old), old (22 mo-old) and senescent female mice (28 mo-old) was evaluated for architectural features, fiber number and central nucleation, weight, collagen and fat deposition. The 3 injury paradigms were: a myotoxin (notexin) which leaves the blood vessels and nerves intact, freezing (FI) that damages local muscle, nerve and blood vessels and denervation-devascularization (DD) which dissociates the nerves and blood vessels from the whole muscle. Histological analyses revealed successful architectural regeneration following notexin injury with negligible fibrosis and fully restored function, regardless of age. In comparison, the regenerative response to injuries that damaged the neurovascular supply (FI and DD) was less effective, but similar across the ages. The focus on net regenerative outcome demonstrated that old and senescent muscle has a robust capacity to regenerate functional architecture.
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Affiliation(s)
- Antonio S J Lee
- Neuromuscular and Regenerative Medicine Unit, School of Medical Sciences, University of New South Wales, Sydney, Australia
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12
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Joanne P, Chourbagi O, Hourdé C, Ferry A, Butler-Browne G, Vicart P, Dumonceaux J, Agbulut O. Viral-mediated expression of desmin mutants to create mouse models of myofibrillar myopathy. Skelet Muscle 2013; 3:4. [PMID: 23425003 PMCID: PMC3599656 DOI: 10.1186/2044-5040-3-4] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2012] [Accepted: 01/28/2013] [Indexed: 12/26/2022] Open
Abstract
Background The clinical features of myofibrillar myopathies display a wide phenotypic heterogeneity. To this date, no studies have evaluated this parameter due to the absence of pertinent animal models. By studying two mutants of desmin, which induce subtle phenotypic differences in patients, we address this issue using an animal model based on the use of adeno-associated virus (AAV) vectors carrying mutated desmin cDNA. Methods After preparation of the vectors, they were injected directly into the tibialis anterior muscles of C57BL/6 mice to allow expression of wild-type (WT) or mutated (R406W or E413K) desmin. Measurements of maximal force were carried out on the muscle in situ and then the injected muscles were analyzed to determine the structural consequences of the desmin mutations on muscle structure (microscopic observations, histology and immunohistochemistry). Results Injection of AAV carrying WT desmin results in the expression of exogenous desmin in 98% of the muscle fibers without any pathological or functional perturbations. Exogenous WT and endogenous desmin are co-localized and no differences were observed compared to non-injected muscle. Expression of desmin mutants in mouse muscles induce morphological changes of muscle fibers (irregular shape and size) and the appearance of desmin accumulations around the nuclei (for R406W) or in subsarcolemmal regions of fibers (for E413K). These accumulations seem to occur and disrupt the Z-line, and a strong regeneration was observed in muscle expressing the R406W desmin, which is not the case for E413K. Moreover, both mutants of desmin studied here induce a decrease in muscle force generation capacity. Conclusions In this study we show that AAV-mediated expression of desmin mutants in mouse muscles recapitulate the aggregation features, the decrease in contractile function and the morphological changes observed in patients with myofibrillar myopathy. More importantly, our results suggest that the R406W desmin mutant induces a robust muscle regeneration, which is not the case for the E413K mutant. This difference could help to explain the phenotypic differences observed in patients. Our results highlight the heterogeneous pathogenic mechanisms between different desmin mutants and open the way for new advances in the study of myofibrillar myopathies.
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Affiliation(s)
- Pierre Joanne
- Université Paris Diderot, Sorbonne Paris Cité, CNRS EAC4413, Unit of Functional and Adaptive Biology, Laboratory of Stress and Pathologies of the Cytoskeleton, 75013, Paris, France
| | - Oussama Chourbagi
- Université Paris Diderot, Sorbonne Paris Cité, CNRS EAC4413, Unit of Functional and Adaptive Biology, Laboratory of Stress and Pathologies of the Cytoskeleton, 75013, Paris, France
| | - Christophe Hourdé
- Department of Aging, Stress and Inflammation, Université Pierre et Marie Curie-Paris 6, Sorbonne Universités, 75005, Paris, France
| | - Arnaud Ferry
- Université Pierre et Marie Curie-Paris 6, Sorbonne Universités, UMR S794, INSERM U974, CNRS UMR7215, Institut de Myologie, 75013, Paris, France.,Université Paris Descartes, Sorbonne Paris Cité, 75006, Paris, France
| | - Gillian Butler-Browne
- Université Pierre et Marie Curie-Paris 6, Sorbonne Universités, UMR S794, INSERM U974, CNRS UMR7215, Institut de Myologie, 75013, Paris, France
| | - Patrick Vicart
- Université Paris Diderot, Sorbonne Paris Cité, CNRS EAC4413, Unit of Functional and Adaptive Biology, Laboratory of Stress and Pathologies of the Cytoskeleton, 75013, Paris, France
| | - Julie Dumonceaux
- Université Pierre et Marie Curie-Paris 6, Sorbonne Universités, UMR S794, INSERM U974, CNRS UMR7215, Institut de Myologie, 75013, Paris, France
| | - Onnik Agbulut
- Université Paris Diderot, Sorbonne Paris Cité, CNRS EAC4413, Unit of Functional and Adaptive Biology, Laboratory of Stress and Pathologies of the Cytoskeleton, 75013, Paris, France
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13
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Orengo JP, Ward AJ, Cooper TA. Alternative splicing dysregulation secondary to skeletal muscle regeneration. Ann Neurol 2011; 69:681-90. [PMID: 21400563 DOI: 10.1002/ana.22278] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2010] [Revised: 09/06/2010] [Accepted: 09/17/2010] [Indexed: 01/01/2023]
Abstract
OBJECTIVE Dysregulation of alternative splicing has become a molecular hallmark of myotonic dystrophy type 1 (DM1), in which neonatal splice variants are expressed in adult skeletal muscle. Splicing dysregulation is induced by RNA containing expanded CUG repeats expressed from the expanded mutant allele by sequestration of muscleblindlike 1 (MBNL1) protein within nuclear RNA foci and increased CUGBP, ELAV-like family member 1 (CELF1) protein levels. Dysregulated splicing has also been identified in other neuromuscular disorders, suggesting either that diseases with different molecular causes share a common pathogenic mechanism or that dysregulated splicing can also be a common secondary consequence of muscle degeneration and regeneration. METHODS In this study, we examined regulation of alternative splicing in 4 different mouse models of muscular dystrophy, including DM1, limb-girdle muscular dystrophy, congenital merosin-deficient muscular dystrophy, and Duchenne muscular dystrophy, and 2 myotoxin (cardiotoxin and notexin) muscle injury models. RESULTS We show that DM1-like alternative splicing dysregulation and altered expression of MBNL1 and CELF1 occur in non-DM1 mouse models of muscular dystrophy and muscle injury, most likely due to recapitulation of neonatal splicing patterns in regenerating fibers. In contrast, CELF1 was elevated in nuclei of mature myofibers of the DM1 model, consistent with a primary effect of pathogenic RNA expression. INTERPRETATION Splicing dysregulation in DM1 is a primary effect of RNA containing expanded CUG repeats. However, we conclude that splicing changes can also be observed secondary to muscle regeneration, and this possibility must be taken into account when evaluating cause-effect relationships between dysregulated splicing and disease processes.
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Affiliation(s)
- James P Orengo
- Department of Pathology and Immunology and, Baylor College of Medicine Houston, TX 77030, USA
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14
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Skeletal muscle intrinsic functional properties are preserved in a model of erythropoietin deficient mice exposed to hypoxia. Pflugers Arch 2010; 459:713-23. [PMID: 20119684 DOI: 10.1007/s00424-009-0775-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2009] [Revised: 12/10/2009] [Accepted: 12/11/2009] [Indexed: 10/19/2022]
Abstract
Erythropoietin (Epo)-induced polycythemia is the main factor of adaptation to hypoxia. In this study, we analysed the effects of Epo deficiency on intrinsic functional properties of slow and fast twitch muscles in a model of erythropoietin deficient mice (Epo-TAg(h)) exposed to hypoxia. We hypothesised that Epo deficiency would be deleterious for skeletal muscle structure and phenotype, which could change its functional properties and alters the adaptive response to ambient hypoxia. Wild-type (WT) and Epo-TAg(h) mice were left in hypobaric chamber at 420 mm Hg pressure for 14 days. Soleus (SOL) and extensor digitorum longus (EDL) were analysed in vitro by mechanical measurements, immunohistological and biochemical analyses. The results were compared to those obtained in corresponding muscles of age-matched normoxic groups. Our data did not show any difference between the groups whatever the Epo deficiency and/or hypoxic conditions for twitch force, tetanic force, fatigue, typology and myosin heavy chain composition. Normoxic Epo-TAg(h) mice exhibit improved capillary-to-fibre ratio compared to WT mice in both SOL and EDL whereas no angiogenic effects of hypoxia or combined Epo-deficiency/hypoxia were observed. These results suggest that skeletal muscles possess a great capacity of adaptation to Epo deficiency. Then Epo deficiency is not a sufficient factor to modify intrinsic functional properties of skeletal muscles.
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15
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Pandorf CE, Jiang WH, Qin AX, Bodell PW, Baldwin KM, Haddad F. Calcineurin plays a modulatory role in loading-induced regulation of type I myosin heavy chain gene expression in slow skeletal muscle. Am J Physiol Regul Integr Comp Physiol 2009; 297:R1037-48. [PMID: 19657098 DOI: 10.1152/ajpregu.00349.2009] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
The role of calcineurin (Cn) in skeletal muscle fiber-type expression has been a subject of great interest because of reports indicating that it controls the slow muscle phenotype. To delineate the role of Cn in phenotype remodeling, particularly its role in driving expression of the type I myosin heavy chain (MHC) gene, we used a novel strategy whereby a profound transition from fast to slow fiber type is induced and examined in the absence and presence of cyclosporin A (CsA), a Cn inhibitor. To induce the fast-to-slow transition, we first subjected rats to 7 days of hindlimb suspension (HS) + thyroid hormone [triiodothyronine (T(3))] to suppress nearly all expression of type I MHC mRNA in the soleus muscle. HS + T(3) was then withdrawn, and rats resumed normal ambulation and thyroid state, during which vehicle or CsA (30 mg x kg(-1) x day(-1)) was administered for 7 or 14 days. The findings demonstrate that, despite significant inhibition of Cn, pre-mRNA, mRNA, and protein abundance of type I MHC increased markedly during reloading relative to HS + T(3) (P < 0.05). Type I MHC expression was, however, attenuated by CsA compared with vehicle treatment. In addition, type IIa and IIx MHC pre-mRNA, mRNA, and relative protein levels were increased in Cn-treated compared with vehicle-treated rats. These findings indicate that Cn has a modulatory role in MHC transcription, rather than a role as a primary regulator of slow MHC gene expression.
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Affiliation(s)
- Clay E Pandorf
- Department of Physiology and Biophysics, University of California, Irvine, Irvine, California 92697, USA
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16
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Agbulut O, Vignaud A, Hourde C, Mouisel E, Fougerousse F, Butler-Browne GS, Ferry A. Slow myosin heavy chain expression in the absence of muscle activity. Am J Physiol Cell Physiol 2008; 296:C205-14. [PMID: 18945940 DOI: 10.1152/ajpcell.00408.2008] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Innervation has been generally accepted to be a major factor involved in both triggering and maintaining the expression of slow myosin heavy chain (MHC-1) in skeletal muscle. However, previous findings from our laboratory have suggested that, in the mouse, this is not always the case (30). Based on these results, we hypothesized that neurotomy would not markedly reduced the expression of MHC-1 protein in the mouse soleus muscles. In addition, other cellular, biochemical, and functional parameters were also studied in these denervated soleus muscles to complete our study. Our results show that denervation reduced neither the relative amount of MHC-1 protein, nor the percentage of muscle fibers expressing MHC-1 protein (P > 0.05). The fact that MHC-1 protein did not respond to muscle inactivity was confirmed in three different mouse strains (129/SV, C57BL/6, and CD1). In contrast, all of the other histological, biochemical, and functional muscle parameters were markedly altered by denervation. Cross-sectional area (CSA) of muscle fibers, maximal tetanic isometric force, maximal velocity of shortening, maximal power, and citrate synthase activity were all reduced in denervated muscles compared with innervated muscles (P < 0.05). Contraction and one-half relaxation times of the twitch were also increased by denervation (P < 0.05). Addition of tenotomy to denervation had no further effect on the relative expression of MHC-1 protein (P > 0.05), despite a greater reduction in CSA and citrate synthase activity (P < 0.05). In conclusion, a deficit in neural input leads to marked atrophy and reduction in performance in mouse soleus muscles. However, the maintenance of the relative expression of slow MHC protein is independent of neuromuscular activity in mice.
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Affiliation(s)
- O Agbulut
- EA300, Université Paria Diderot, Paris, France
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Zádor E. dnRas stimulates autocrine-paracrine growth of regenerating muscle via calcineurin-NFAT-IL-4 pathway. Biochem Biophys Res Commun 2008; 375:265-70. [PMID: 18706889 DOI: 10.1016/j.bbrc.2008.08.024] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2008] [Accepted: 08/06/2008] [Indexed: 12/21/2022]
Abstract
Ras and calcineurin are members of two independent pathways in muscle growth but their interaction is not known. This work shows that the transfection of about 1% of the muscle fibers with dominant negative Ras (dnRas) shows a wilder effect; it stimulates the fiber growth in the entire regenerating soleus muscle, including the nontransfected fibers. Co-transfection with the calcineurin inhibitor cain/cabin prevented the growth stimulation. Injection of antibody for interleukin-4 (IL-4) also abolished the growth ameliorating effect. These results suggest that the inactivation of Ras in 1% of the fibers upregulates the calcineurin-NFAT-IL-4 pathway and the secreted IL-4 triggers fiber growth stimulation in the whole regenerating soleus muscle of the rat. The results highlight the importance of the autocrine-paracrine regulation in muscle regeneration and hint to a novel method of gene theraphy of degenerative-regenerative muscle dystrophies.
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Affiliation(s)
- Erno Zádor
- Institute of Biochemistry, Faculty of Medicine, University of Szeged, Szeged, Dóm tér 9, H-6720, Hungary.
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18
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Szabó A, Wuytack F, Zádor E. The effect of passive movement on denervated soleus highlights a differential nerve control on SERCA and MyHC isoforms. J Histochem Cytochem 2008; 56:1013-22. [PMID: 18678884 DOI: 10.1369/jhc.2008.951632] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
The sarco-endoplasmic reticulum Ca2+ ATP-ase (SERCA) and myosin heavy chain (MyHC) levels were measured in hindlimb-denervated and selectively denervated rat soleus muscles. Selective denervation allowed passive movement of the soleus, whereas hindlimb denervation rendered it to passivity. To minimize chronic effects, we followed the changes only for 2 weeks. Selective denervation resulted in less muscle atrophy, a faster slow-to-fast transition of MyHC isoforms, and less coordinated expressions of the slow vs fast isoforms of MyHC and SERCA. Generally, expression of the slow-twitch type SERCA2a was found to be less dependent, whereas the slow-twitch type MyHC1 was the most dependent on innervation. Our study shows that passive movement is able to ameliorate denervation-induced atrophy of the soleus and that it also accentuates the dyscoordination in the expression of the corresponding slow and fast isoforms of MyHC and SERCA.
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Affiliation(s)
- András Szabó
- Institute of Biochemistry, Faculty of General Medicine, University of Szeged, Szeged, Hungary
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19
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Vignaud A, Fougerousse F, Mouisel E, Guerchet N, Hourde C, Bacou F, Butler-Browne GS, Chatonnet A, Ferry A. Genetic inactivation of acetylcholinesterase causes functional and structural impairment of mouse soleus muscles. Cell Tissue Res 2008; 333:289-96. [DOI: 10.1007/s00441-008-0640-6] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2008] [Revised: 05/06/2008] [Accepted: 05/08/2008] [Indexed: 11/28/2022]
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20
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Michel RN, Chin ER, Chakkalakal JV, Eibl JK, Jasmin BJ. Ca2+/calmodulin-based signalling in the regulation of the muscle fibre phenotype and its therapeutic potential via modulation of utrophin A and myostatin expression. Appl Physiol Nutr Metab 2008; 32:921-9. [PMID: 18059617 DOI: 10.1139/h07-093] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Ca2+ signalling plays an important role in excitation-contraction coupling and the resultant force output of skeletal muscle. It is also known to play a crucial role in modulating both short- and long-term muscle cellular phenotypic adaptations associated with these events. Ca2+ signalling via the Ca2+/calmodulin (CaM)-dependent phosphatase calcineurin (CnA) and via Ca2+/CaM-dependent kinases, such as CaMKI and CaMKII, is known to regulate hypertrophic growth in response to overload, to direct slow versus fast fibre gene expression, and to contribute to mitochondrial biogenesis. The CnA- and CaMK-dependent regulation of the downstream transcription factors nuclear factor of activated T cells (NFAT) and myocyte-specific enhancer factor 2 are known to activate muscle-specific genes associated with a slower, more oxidative fibre phenotype. We have also recently shown the expression of utrophin A, a cytoskeletal protein that accumulates at the neuromuscular junction and plays a role in maturation of the postsynaptic apparatus, to be regulated by CnA-NFAT and Ca2+/CaM signalling. This regulation is fibre-type specific and potentiated by interactions with the transcriptional regulators and coactivators GA binding protein (also known as nuclear respiratory factor 2) and peroxisome proliferator-activated receptor-gamma coactivator 1 alpha. Another downstream target of CnA signalling may be myostatin, a transforming growth factor-beta family member that is a negative regulator of muscle growth. While the list of the downstream targets of CnA/NFAT- and Ca2+/CaM-dependent signalling is emerging, the precise interaction of these pathways with the Ca2+-independent pathways p38 mitogen-activated protein kinase, extracellular signal-regulated kinases 1 and 2, phosphoinositide-3 kinase, and protein kinase B (Akt/PKB) must also be considered when deciphering fibre responses and plasticity to altered contractile load.
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Affiliation(s)
- Robin N Michel
- Department of Chemistry and Biochemistry,Concordia University, The Richard J. Renaud Science Complex, Montreal, QC H4B 1R6, Canada.
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Stupka N, Schertzer JD, Bassel-Duby R, Olson EN, Lynch GS. Calcineurin-A alpha activation enhances the structure and function of regenerating muscles after myotoxic injury. Am J Physiol Regul Integr Comp Physiol 2007; 293:R686-94. [PMID: 17475677 DOI: 10.1152/ajpregu.00612.2006] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Calcineurin signaling is essential for successful muscle regeneration. Although calcineurin inhibition compromises muscle repair, it is not known whether calcineurin activation can enhance muscle repair after injury. Tibialis anterior (TA) muscles from adult wild-type (WT) and transgenic mice overexpressing the constitutively active calcineurin-A alpha transgene under the control of the mitochondrial creatine kinase promoter (MCK-CnA alpha*) were injected with the myotoxic snake venom Notexin to destroy all muscle fibers. The TA muscle of the contralateral limb served as the uninjured control. Muscle structure was assessed at 5 and 9 days postinjury, and muscle function was tested in situ at 9 days postinjury. Calcineurin stimulation enhanced muscle regeneration and altered levels of myoregulatory factors (MRFs). Recovery of myofiber size and force-producing capacity was hastened in injured muscles of MCK-CnA alpha* mice compared with control. Myogenin levels were greater 5 days postinjury and myocyte enhancer factor 2a (MEF2a) expression was greater 9 days postinjury in muscles of MCK-CnA alpha* mice compared with WT mice. Higher MEF2a expression in regenerating muscles of MCK-CnA alpha* mice 9 days postinjury may be related to an increase of slow fiber genes. Calcineurin activation in uninjured and injured TA muscles slowed muscle contractile properties, reduced fatigability, and enhanced force recovery after 4 min of intermittent maximal stimulation. Therefore, calcineurin activation can confer structural and functional benefits to regenerating skeletal muscles, which may be mediated in part by differential expression of MRFs.
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Affiliation(s)
- Nicole Stupka
- Basic and Clinical Myology Laboratory, Department of Physiology, The University of Melbourne, Victoria, Australia
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Eizema K, van der Wal DE, van den Burg MMM, de Jonge HW, Everts ME. Differential Expression of Calcineurin and SR Ca2+ Handling Proteins in Equine Muscle Fibers During Early Postnatal Growth. J Histochem Cytochem 2006; 55:247-54. [PMID: 17101725 DOI: 10.1369/jhc.6a7039.2006] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
During early postnatal development, the myosin heavy chain (MyHC) expression pattern in equine gluteus medius muscle shows adaptation to movement and load, resulting in a decrease in the number of fast MyHC fibers and an increase in the number of slow MyHC fibers. In the present study we correlated the expression of MyHC isoforms to the expression of sarcoplasmic(endo)reticulum Ca2+-ATPase 1 and 2a (SERCA), phospholamban (PLB), calcineurin A (CnA), and calcineurin B (CnB). Gluteus medius muscle biopsies were taken at 0, 2, 4, and 48 weeks and analyzed using immunofluorescence. Both SERCA isoforms and PLB were expressed in almost all fiber types at birth. From 4 weeks of age onward, SERCA1 was exclusively expressed in fast MyHC fibers and SERCA2a and PLB in slow MyHC fibers. At all time points, CnA and CnB proteins were expressed at a basal level in all fibers, but with a higher expression level in MyHC type 1 fibers. From 4 weeks onward, expression of only CnA was also higher in MyHC type 2a and 2ad fibers. We propose a double function of calcineurin in calcium homeostasis and maintenance of slow MyHC fiber type identity. Although equine muscle is already functional at birth, expression patterns of the monitored proteins still show adaptation, depending on the MyHC fiber type.
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Affiliation(s)
- Karin Eizema
- Department of Pathobiology, Division of Anatomy and Physiology, Faculty of Veterinary Medicine, Utrecht University, P.O. Box 80.158, NL-3508 TD, Utrecht, The Netherlands.
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Lewis MI. Mechanisms underlying myogenesis: complex and likely to become more so! J Appl Physiol (1985) 2006; 101:1539-40. [PMID: 16946026 DOI: 10.1152/japplphysiol.00944.2006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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Affiliation(s)
- Holger Scholz
- Institut für Physiologie, Charité-Universitätsmedizin Berlin, Tucholskystrasse 2, 10117 Berlin, Germany.
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