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Roussel MP, Morin M, Girardin M, Fortin AM, Leone M, Mathieu J, Gagnon C, Duchesne E. Training program-induced skeletal muscle adaptations in two men with myotonic dystrophy type 1. BMC Res Notes 2019; 12:526. [PMID: 31429798 PMCID: PMC6700834 DOI: 10.1186/s13104-019-4554-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2019] [Accepted: 08/10/2019] [Indexed: 01/03/2023] Open
Abstract
Objective The purpose of this side product of another unpublished research project, was to address the effects of a training program on skeletal muscle adaptations of people with myotonic dystrophy type 1 (DM1), under a multifaceted perspective. The objective of this study was to look at training induced muscular adaptations by evaluating changes in muscle strength, myofiber cross-sectional area (CSA), proportion of myofiber types and with indirect markers of muscle growth [proportion of centrally nucleated fibers (CNF) and density of neutrophils and macrophages]. Two men with DM1 underwent a 12-week strength/endurance training program (18 sessions). Two muscle biopsies were obtained pre- and post-training program. Results Muscular adaptations occurred only in Patient 1, who attended 72% of the training sessions compared to 39% for Patient 2. These adaptations included increase in the CSA of type I and II myofibers and changes in their proportion. No changes were observed in the percentage of CNF, infiltration of neutrophils and macrophages and muscle strength. These results illustrate the capacity of skeletal muscle cells to undergo adaptations linked to muscle growth in DM1 patients. Also, these adaptations seem to be dependent on the attendance. Trial registration Clinicaltrials.gov NCT04001920 retrospectively registered on June 26th, 2019
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Affiliation(s)
- Marie-Pier Roussel
- Département des sciences fondamentales, Université du Québec à Chicoutimi, Saguenay, QC, Canada.,Groupe de recherche interdisciplinaire sur les maladies neuromusculaires, Centre intégré universitaire de santé et de services sociaux du Saguenay-Lac-St-Jean, Installations de Jonquière, Saguenay, QC, Canada.,Centre de recherche-Hôpital Charles-Le Moyne - Saguenay-Lac-Saint-Jean sur les innovations en santé, Saguenay, QC, Canada
| | - Marika Morin
- Département des sciences de la santé, Université du Québec à Chicoutimi, Saguenay, QC, Canada
| | - Mélina Girardin
- Département des sciences de la santé, Université du Québec à Chicoutimi, Saguenay, QC, Canada
| | - Anne-Marie Fortin
- Groupe de recherche interdisciplinaire sur les maladies neuromusculaires, Centre intégré universitaire de santé et de services sociaux du Saguenay-Lac-St-Jean, Installations de Jonquière, Saguenay, QC, Canada
| | - Mario Leone
- Groupe de recherche interdisciplinaire sur les maladies neuromusculaires, Centre intégré universitaire de santé et de services sociaux du Saguenay-Lac-St-Jean, Installations de Jonquière, Saguenay, QC, Canada.,Département des sciences de la santé, Université du Québec à Chicoutimi, Saguenay, QC, Canada
| | - Jean Mathieu
- Groupe de recherche interdisciplinaire sur les maladies neuromusculaires, Centre intégré universitaire de santé et de services sociaux du Saguenay-Lac-St-Jean, Installations de Jonquière, Saguenay, QC, Canada.,Centre de recherche-Hôpital Charles-Le Moyne - Saguenay-Lac-Saint-Jean sur les innovations en santé, Saguenay, QC, Canada.,Faculté de médecine et des sciences de la santé, Université de Sherbrooke, Sherbrooke, QC, Canada
| | - Cynthia Gagnon
- Groupe de recherche interdisciplinaire sur les maladies neuromusculaires, Centre intégré universitaire de santé et de services sociaux du Saguenay-Lac-St-Jean, Installations de Jonquière, Saguenay, QC, Canada.,Centre de recherche-Hôpital Charles-Le Moyne - Saguenay-Lac-Saint-Jean sur les innovations en santé, Saguenay, QC, Canada.,Faculté de médecine et des sciences de la santé, Université de Sherbrooke, Sherbrooke, QC, Canada
| | - Elise Duchesne
- Groupe de recherche interdisciplinaire sur les maladies neuromusculaires, Centre intégré universitaire de santé et de services sociaux du Saguenay-Lac-St-Jean, Installations de Jonquière, Saguenay, QC, Canada. .,Centre de recherche-Hôpital Charles-Le Moyne - Saguenay-Lac-Saint-Jean sur les innovations en santé, Saguenay, QC, Canada. .,Département des sciences de la santé, Université du Québec à Chicoutimi, Saguenay, QC, Canada. .,Unité d'enseignement en physiothérapie, Département des sciences de la santé, Université du Québec à Chicoutimi, 555, boulevard de l'Université, Saguenay, G7H 2B1, Quebec, Canada.
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Roussel MP, Morin M, Gagnon C, Duchesne E. What is known about the effects of exercise or training to reduce skeletal muscle impairments of patients with myotonic dystrophy type 1? A scoping review. BMC Musculoskelet Disord 2019; 20:101. [PMID: 30836978 PMCID: PMC6402179 DOI: 10.1186/s12891-019-2458-7] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/08/2018] [Accepted: 02/06/2019] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Myotonic dystrophy type 1 (DM1) is a neuromuscular disease characterized by multisystemic involvements including a progressive loss of maximal muscle strength and muscle wasting. Poor lower-limb strength is an important factor explaining disrupted social participation of affected individuals. This review aims to map what is known about the effects of exercise and training programs undertaken to counteract skeletal muscle impairments in DM1 patients. METHODS Medline, CINAHL and EMBASE databases were searched. Regarding study eligibility, title and abstract of 704 studies followed by 45 full articles were reviewed according to the following eligibility criteria. Inclusion: (1) humans with DM1 and (2) experimental protocol relying on exercise or training. Exclusion: (1) studies that do not evaluate skeletal muscle responses or adaptations, (2) reviews covering articles already included and (3) pharmacological intervention at the same time of exercise or training program. RESULTS Twenty-one papers were selected for in-depth analysis. Different exercise or training protocols were found including: acute exercise, neuromuscular electric stimulation, strength training, aerobic training, balance training and multiple rehabilitation interventions. Seven studies reported clinical measurements only, five physiological parameters only and nine both types. CONCLUSION This scoping review offers a complete summary of the current scientific literature on the effect of exercise and training in DM1 and a framework for future studies based on the concomitant evaluation of the several outcomes in present literature. Although there were a good number of studies focusing on clinical measurements, heterogeneity between studies does not allow to identify what are the adequate training parameters to obtain exercise or training-induced positive impacts on muscle function. Scientific literature is even more scarce regarding physiological parameters, where much more research is needed to understand the underlying mechanisms of exercise response in DM1.
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Affiliation(s)
- Marie-Pier Roussel
- Département des sciences de la santé, physiothérapie, Université du Québec à Chicoutimi, 555, boulevard de l'Université, Chicoutimi, Quebec, G7H 2B1, Canada.,Groupe de recherche interdisciplinaire sur les maladies neuromusculaires, Centre intégré universitaire de santé et de services sociaux du Saguenay-Lac-St-Jean, 2230 rue de l'Hôpital, Saguenay, Québec, Canada.,Centre de recherche Charles-Le Moyne - Saguenay-Lac-Saint-Jean sur les innovations en santé, 2230 rue de l'Hôpital, Saguenay, Québec, Canada., Longueuil, Québec, Canada
| | - Marika Morin
- Département des sciences de la santé, physiothérapie, Université du Québec à Chicoutimi, 555, boulevard de l'Université, Chicoutimi, Quebec, G7H 2B1, Canada
| | - Cynthia Gagnon
- Groupe de recherche interdisciplinaire sur les maladies neuromusculaires, Centre intégré universitaire de santé et de services sociaux du Saguenay-Lac-St-Jean, 2230 rue de l'Hôpital, Saguenay, Québec, Canada.,Centre de recherche Charles-Le Moyne - Saguenay-Lac-Saint-Jean sur les innovations en santé, 2230 rue de l'Hôpital, Saguenay, Québec, Canada., Longueuil, Québec, Canada.,Faculté de médecine et des sciences de la santé, Université de Sherbrooke, 3001, 12e Avenue Nord, Sherbrooke, Québec, Canada
| | - Elise Duchesne
- Département des sciences de la santé, physiothérapie, Université du Québec à Chicoutimi, 555, boulevard de l'Université, Chicoutimi, Quebec, G7H 2B1, Canada. .,Groupe de recherche interdisciplinaire sur les maladies neuromusculaires, Centre intégré universitaire de santé et de services sociaux du Saguenay-Lac-St-Jean, 2230 rue de l'Hôpital, Saguenay, Québec, Canada. .,Centre de recherche Charles-Le Moyne - Saguenay-Lac-Saint-Jean sur les innovations en santé, 2230 rue de l'Hôpital, Saguenay, Québec, Canada., Longueuil, Québec, Canada.
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Thomas JD, Oliveira R, Sznajder ŁJ, Swanson MS. Myotonic Dystrophy and Developmental Regulation of RNA Processing. Compr Physiol 2018; 8:509-553. [PMID: 29687899 PMCID: PMC11323716 DOI: 10.1002/cphy.c170002] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Myotonic dystrophy (DM) is a multisystemic disorder caused by microsatellite expansion mutations in two unrelated genes leading to similar, yet distinct, diseases. DM disease presentation is highly variable and distinguished by differences in age-of-onset and symptom severity. In the most severe form, DM presents with congenital onset and profound developmental defects. At the molecular level, DM pathogenesis is characterized by a toxic RNA gain-of-function mechanism that involves the transcription of noncoding microsatellite expansions. These mutant RNAs disrupt key cellular pathways, including RNA processing, localization, and translation. In DM, these toxic RNA effects are predominantly mediated through the modulation of the muscleblind-like and CUGBP and ETR-3-like factor families of RNA binding proteins (RBPs). Dysfunction of these RBPs results in widespread RNA processing defects culminating in the expression of developmentally inappropriate protein isoforms in adult tissues. The tissue that is the focus of this review, skeletal muscle, is particularly sensitive to mutant RNA-responsive perturbations, as patients display a variety of developmental, structural, and functional defects in muscle. Here, we provide a comprehensive overview of DM1 and DM2 clinical presentation and pathology as well as the underlying cellular and molecular defects associated with DM disease onset and progression. Additionally, fundamental aspects of skeletal muscle development altered in DM are highlighted together with ongoing and potential therapeutic avenues to treat this muscular dystrophy. © 2018 American Physiological Society. Compr Physiol 8:509-553, 2018.
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Affiliation(s)
- James D. Thomas
- Department of Molecular Genetics and Microbiology, Center for NeuroGenetics and the Genetics Institute, University of Florida, College of Medicine, Gainesville, Florida, USA
| | - Ruan Oliveira
- Department of Molecular Genetics and Microbiology, Center for NeuroGenetics and the Genetics Institute, University of Florida, College of Medicine, Gainesville, Florida, USA
| | - Łukasz J. Sznajder
- Department of Molecular Genetics and Microbiology, Center for NeuroGenetics and the Genetics Institute, University of Florida, College of Medicine, Gainesville, Florida, USA
| | - Maurice S. Swanson
- Department of Molecular Genetics and Microbiology, Center for NeuroGenetics and the Genetics Institute, University of Florida, College of Medicine, Gainesville, Florida, USA
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Liang R, Dong W, Shen X, Peng X, Aceves AG, Liu Y. Modeling Myotonic Dystrophy 1 in C2C12 Myoblast Cells. J Vis Exp 2016. [PMID: 27501221 DOI: 10.3791/54078] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022] Open
Abstract
Myotonic dystrophy 1 (DM1) is a common form of muscular dystrophy. Although several animal models have been established for DM1, myoblast cell models are still important because they offer an efficient cellular alternative for studying cellular and molecular events. Though C2C12 myoblast cells have been widely used to study myogenesis, resistance to gene transfection, or viral transduction, hinders research in C2C12 cells. Here, we describe an optimized protocol that includes daily maintenance, transfection and transduction procedures to introduce genes into C2C12 myoblasts and the induction of myocyte differentiation. Collectively, these procedures enable best transfection/transduction efficiencies, as well as consistent differentiation outcomes. The protocol described in establishing DM1 myoblast cell models would benefit the study of myotonic dystrophy, as well as other muscular diseases.
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Affiliation(s)
- Rui Liang
- Department of Biology and Biochemistry, University of Houston
| | - Wei Dong
- Department of Biology and Biochemistry, University of Houston; Department of Cardiology, The First Affiliated Hospital of Nanchang University
| | - Xiaopeng Shen
- Department of Biology and Biochemistry, University of Houston
| | - Xiaoping Peng
- Department of Biology and Biochemistry, University of Houston; Department of Cardiology, The First Affiliated Hospital of Nanchang University
| | - Angie G Aceves
- Department of Biology and Biochemistry, University of Houston; Department of Economics, University of Houston
| | - Yu Liu
- Department of Biology and Biochemistry, University of Houston;
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Myotonic dystrophy type 1-associated CTG repeats disturb the expression and subcellular distribution of microtubule-associated proteins MAP1A, MAP2, and MAP6/STOP in PC12 cells. Mol Biol Rep 2011; 39:415-24. [PMID: 21567201 DOI: 10.1007/s11033-011-0753-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2010] [Accepted: 04/27/2011] [Indexed: 02/04/2023]
Abstract
To study the effect of DM1-associated CTG repeats on neuronal function, we developed a PC12 cell-based model that constitutively expresses the DMPK gene 3'-untranslated region with 90 CTG repeats (CTG90 cells). As CTG90 cells exhibit impaired neurite outgrowth and as microtubule-associated proteins (MAPs) are crucial for microtubule stability, we analyzed whether MAPs are a target of CTG repeats. NGF induces mRNA expression of Map2, Map1a and Map6 in control cells (PC12 cells transfected with the empty vector), but this induction is abolished for Map2 and Map1a in CTG90 cells. MAP2 and MAP6/STOP proteins decrease in NGF-treated CTG90 cells, whereas MAP1A increases. Data suggest that CTG repeats might alter somehow the expression of MAPs, which appears to be related with CTG90 cell-deficient neurite outgrowth. Decreased MAP2 levels found in the hippocampus of a DM1 mouse model indicates that targeting of MAPs expression by CTG repeats might be relevant to DM1.
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Nykamp KR, Swanson MS. Toxic RNA in the nucleus: unstable microsatellite expression in neuromuscular disease. PROGRESS IN MOLECULAR AND SUBCELLULAR BIOLOGY 2008; 35:57-77. [PMID: 15113079 DOI: 10.1007/978-3-540-74266-1_3] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/02/2022]
Affiliation(s)
- Keith R Nykamp
- Department of Molecular Genetics and Microbiology, Powell Gene Therapy Center, University of Florida College of Medicine, Gainesville, Florida 32610-0266, USA
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Kimura T, Takahashi MP, Fujimura H, Sakoda S. Expression and distribution of a small-conductance calcium-activated potassium channel (SK3) protein in skeletal muscles from myotonic muscular dystrophy patients and congenital myotonic mice. Neurosci Lett 2003; 347:191-5. [PMID: 12875918 DOI: 10.1016/s0304-3940(03)00638-4] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
The SK3 channel, a small-conductance calcium-activated potassium channel, is expressed in immature fibers of skeletal muscle and becomes down regulated after innervation. We have previously shown that the level of mRNA of the SK3 channel is increased in muscle from myotonic dystrophy. In this study, we have carried out an immunohistochemical study using a polyclonal anti-SK3 antibody. SK3 protein is partly expressed at the cell membrane of normal sized fibers in myotonic dystrophy. Although SK3 channels are also expressed in muscles from polymyositis and amyotrophic lateral sclerosis, the positive staining is observed only in regenerating or denervated fibers. No expression of SK3 protein in a myotonic mouse (ADR) suggests that the increase in the SK3 channel in myotonic dystrophy is not due to hyperexcitability. These data support the hypothesis of a differentiation defect in myotonic dystrophy.
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Affiliation(s)
- Takashi Kimura
- Department of Neurology, Osaka University Graduate School of Medicine, D-4, 2-2 Yamadaoka, Suita, 565-0871, Osaka, Japan
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Quintero-Mora ML, Depardon F, Cisneros B. Expanded CTG repeats inhibit neuronal differentiation of the PC12 cell line. Biochem Biophys Res Commun 2002; 295:289-94. [PMID: 12150945 DOI: 10.1016/s0006-291x(02)00660-5] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Myotonic dystrophy (DM) is a dominant neuromuscular disorder caused by the expansion of trinucleotide CTG repeats in the 3-untranslated region (3'-UTR) of the MtPK gene. Although DM-associated mental retardation suggests that neuronal functions are disturbed by the expansion mutation, the effect of this alteration in neuronal cells has not been approached. In this study we established stable transfectans of PC12 neuronal cell line expressing the reporter gene CAT alone (empty-vector clone) or fused to the MtPK 3'-UTR with 5, 60, or 90 CTG repeats (CTG5, CTG60, and CTG90 clones, respectively). CTG90 cells exhibited a suppression of NGF-induced neuronal differentiation while empty-vector, CTG5 and CTG60 clones differentiated normally. CTG90 cells displayed normal activation of early differentiation markers, ERK1/2, but the up-regulation of the late marker MAP2 was dramatically reduced. Our neuronal cell system provides the first information of how the mutant MtPK 3'-UTR mRNA affects neuronal functions.
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Affiliation(s)
- María Leonor Quintero-Mora
- Departamento de Genética y Biología Molecular, Centro de Investigación y Estudios Avanzados del IPN, Avenida Instituto Politécnico Nacional 2508, Apartado Postal 14-740, C.P. 07000 Mexico D.F., Mexico
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Timchenko NA, Iakova P, Cai ZJ, Smith JR, Timchenko LT. Molecular basis for impaired muscle differentiation in myotonic dystrophy. Mol Cell Biol 2001; 21:6927-38. [PMID: 11564876 PMCID: PMC99869 DOI: 10.1128/mcb.21.20.6927-6938.2001] [Citation(s) in RCA: 149] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Differentiation of skeletal muscle is affected in myotonic dystrophy (DM) patients. Analysis of cultured myoblasts from DM patients shows that DM myoblasts lose the capability to withdraw from the cell cycle during differentiation. Our data demonstrate that the expression and activity of the proteins responsible for cell cycle withdrawal are altered in DM muscle cells. Skeletal muscle cells from DM patients fail to induce cytoplasmic levels of a CUG RNA binding protein, CUGBP1, while normal differentiated cells accumulate CUGBP1 in the cytoplasm. In cells from normal patients, CUGBP1 up-regulates p21 protein during differentiation. Several lines of evidence show that CUGBP1 induces the translation of p21 via binding to a GC-rich sequence located within the 5' region of p21 mRNA. Failure of DM cells to accumulate CUGBP1 in the cytoplasm leads to a significant reduction of p21 and to alterations of other proteins responsible for the cell cycle withdrawal. The activity of cdk4 declines during differentiation of cells from control patients, while in DM cells cdk4 is highly active during all stages of differentiation. In addition, DM cells do not form Rb/E2F repressor complexes that are abundant in differentiated cells from normal patients. Our data provide evidence for an impaired cell cycle withdrawal in DM muscle cells and suggest that alterations in the activity of CUGBP1 causes disruption of p21-dependent control of cell cycle arrest.
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Affiliation(s)
- N A Timchenko
- Huffington Center on Aging, Baylor College of Medicine, Houston, Texas 77030, USA
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Good PJ, Chen Q, Warner SJ, Herring DC. A family of human RNA-binding proteins related to the Drosophila Bruno translational regulator. J Biol Chem 2000; 275:28583-92. [PMID: 10893231 DOI: 10.1074/jbc.m003083200] [Citation(s) in RCA: 108] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
The post-transcriptional regulation of gene expression by RNA-binding proteins is an important element in controlling both normal cell functions and animal development. The diverse roles are demonstrated by the Elav family of RNA-binding proteins, where various members have been shown to regulate several processes involving mRNA. We have identified another family of RNA-binding proteins distantly related to the Elav family but closely related to Bruno, a translational regulator in Drosophila melanogaster. In humans, six Bruno-like genes have been identified, whereas other species such as Drosophila, Xenopus laevis, and Caenorhabditis elegans have at least two members of this family, and related genes have also been detected in plants and ascidians. The human BRUNOL2 and BRUNOL3 are 92% identical in the RNA-binding domains, although the BRUNOL2 gene is expressed ubiquitously whereas BRUNOL3 is expressed predominantly in the heart, muscle, and nervous system. Both of these proteins bind the same target RNA, the Bruno response element. The RNA-binding domain that recognizes the Bruno response element is composed of two consecutive RNA recognition motifs at the amino terminus of vertebrate Bruno protein. The possible involvement of the Bruno family of proteins in the CUG repeat expansion disease myotonic dystrophy is discussed.
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Affiliation(s)
- P J Good
- Department of Biochemistry and Molecular Biology and Feist-Weiller Cancer Center, Louisiana State University, Health Sciences Center, Shreveport, Lousiana 71130, USA.
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