1
|
Böhm J, Barthélémy I, Landwerlin C, Blanchard-Gutton N, Relaix F, Blot S, Laporte J, Tiret L. A dog model for centronuclear myopathy carrying the most common DNM2 mutation. Dis Model Mech 2022; 15:274622. [PMID: 35244154 PMCID: PMC9016898 DOI: 10.1242/dmm.049219] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2021] [Accepted: 02/21/2022] [Indexed: 12/17/2022] Open
Abstract
Mutations in DNM2 cause autosomal dominant centronuclear myopathy (ADCNM), a rare disease characterized by skeletal muscle weakness and structural anomalies of the myofibres, including nuclear centralization and mitochondrial mispositioning. Following the clinical report of a Border Collie male with exercise intolerance and histopathological hallmarks of CNM on the muscle biopsy, we identified the c.1393C>T (R465W) mutation in DNM2, corresponding to the most common ADCNM mutation in humans. In order to establish a large animal model for longitudinal and preclinical studies on the muscle disorder, we collected sperm samples from the Border Collie male and generated a dog cohort for subsequent clinical, genetic and histological investigations. Four of the five offspring carried the DNM2 mutation and showed muscle atrophy and a mildly impaired gait. Morphological examinations of transverse muscle sections revealed CNM-typical fibres with centralized nuclei and remodelling of the mitochondrial network. Overall, the DNM2-CNM dog represents a faithful animal model for the human disorder, allows the investigation of ADCNM disease progression, and constitutes a valuable complementary tool to validate innovative therapies established in mice.
Collapse
Affiliation(s)
- Johann Böhm
- Médecine translationnelle et neurogénétique, Institut de Génétique et de Biologie Moléculaire et Cellulaire (IGBMC), Inserm U 1258, CNRS UMR 7104, Université de Strasbourg, 67404 Illkirch, France
| | - Inès Barthélémy
- Neuroscience et psychiatrie, Université Paris-Est Créteil, INSERM, IMRB, 94010 Créteil, France.,Ecole nationale vétérinaire d'Alfort, IMRB, 94700 Maisons-Alfort, France.,EFS, IMRB, 94017 Créteil Cedex, France
| | - Charlène Landwerlin
- Médecine translationnelle et neurogénétique, Institut de Génétique et de Biologie Moléculaire et Cellulaire (IGBMC), Inserm U 1258, CNRS UMR 7104, Université de Strasbourg, 67404 Illkirch, France
| | - Nicolas Blanchard-Gutton
- Neuroscience et psychiatrie, Université Paris-Est Créteil, INSERM, IMRB, 94010 Créteil, France.,Ecole nationale vétérinaire d'Alfort, IMRB, 94700 Maisons-Alfort, France.,EFS, IMRB, 94017 Créteil Cedex, France
| | - Frédéric Relaix
- Neuroscience et psychiatrie, Université Paris-Est Créteil, INSERM, IMRB, 94010 Créteil, France.,Ecole nationale vétérinaire d'Alfort, IMRB, 94700 Maisons-Alfort, France.,EFS, IMRB, 94017 Créteil Cedex, France
| | - Stéphane Blot
- Neuroscience et psychiatrie, Université Paris-Est Créteil, INSERM, IMRB, 94010 Créteil, France.,Ecole nationale vétérinaire d'Alfort, IMRB, 94700 Maisons-Alfort, France.,EFS, IMRB, 94017 Créteil Cedex, France
| | - Jocelyn Laporte
- Médecine translationnelle et neurogénétique, Institut de Génétique et de Biologie Moléculaire et Cellulaire (IGBMC), Inserm U 1258, CNRS UMR 7104, Université de Strasbourg, 67404 Illkirch, France
| | - Laurent Tiret
- Neuroscience et psychiatrie, Université Paris-Est Créteil, INSERM, IMRB, 94010 Créteil, France.,Ecole nationale vétérinaire d'Alfort, IMRB, 94700 Maisons-Alfort, France.,EFS, IMRB, 94017 Créteil Cedex, France
| |
Collapse
|
2
|
Punzón I, Mauduit D, Holvoet B, Thibaud JL, de Fornel P, Deroose CM, Blanchard-Gutton N, Vilquin JT, Sampaolesi M, Barthélémy I, Blot S. In Vivo Myoblasts Tracking Using the Sodium Iodide Symporter Gene Expression in Dogs. Mol Ther Methods Clin Dev 2020; 17:317-327. [PMID: 32577429 PMCID: PMC7293195 DOI: 10.1016/j.omtm.2019.12.011] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/07/2019] [Accepted: 12/13/2019] [Indexed: 01/07/2023]
Abstract
Stem cell-based therapies are a promising approach for the treatment of degenerative muscular diseases; however, clinical trials have shown inconclusive and even disappointing results so far. Noninvasive cell monitoring by medicine imaging could improve the understanding of the survival and biodistribution of cells following injection. In this study, we assessed the canine sodium iodide symporter (cNIS) reporter gene as an imaging tool to track by single-photon emission computed tomography (SPECT/CT) transduced canine myoblasts after intramuscular (IM) administrations in dogs. cNIS-expressing cells kept their myogenic capacities and showed strong 99 mTc-pertechnetate (99 mTcO4−) uptake efficiency both in vitro and in vivo. cNIS expression allowed visualization of cells by SPECT/CT along time: 4 h, 48 h, 7 days, and 30 days after IM injection; biopsies collected 30 days post administration showed myofiber’s membranes expressing cNIS. This study demonstrates that NIS can be used as a reporter to track cells in vivo in the skeletal muscle of large animals. Our results set a proof of concept of the benefits NIS-tracking tool may bring to the already challenging cell-based therapies arena in myopathies and pave the way to a more efficient translation to the clinical setting from more accurate pre-clinical results.
Collapse
Affiliation(s)
- Isabel Punzón
- INSERM U955-E10, IMRB, Université Paris Est Créteil, Ecole nationale vétérinaire d'Alfort, 94700 Maisons-Alfort, France
| | - David Mauduit
- INSERM U955-E10, IMRB, Université Paris Est Créteil, Ecole nationale vétérinaire d'Alfort, 94700 Maisons-Alfort, France
| | - Bryan Holvoet
- Nuclear Medicine and Molecular Imaging, Department of Imaging and Pathology, KU Leuven, Leuven 3000, Belgium
| | | | | | - Christophe M Deroose
- Nuclear Medicine and Molecular Imaging, Department of Imaging and Pathology, KU Leuven, Leuven 3000, Belgium
| | - Nicolas Blanchard-Gutton
- INSERM U955-E10, IMRB, Université Paris Est Créteil, Ecole nationale vétérinaire d'Alfort, 94700 Maisons-Alfort, France
| | - Jean-Thomas Vilquin
- Sorbonne Université, INSERM, AIM, Centre de Recherche en Myologie, UMRS 974, AP-HP, Hôpital Pitié Salpêtrière, 75013 Paris, France
| | - Maurilio Sampaolesi
- Translational Cardiomyology Laboratory, Stem Cell and Developmental Biology, Department of Development and Regeneration, KU Leuven, Leuven, Belgium
| | - Inès Barthélémy
- INSERM U955-E10, IMRB, Université Paris Est Créteil, Ecole nationale vétérinaire d'Alfort, 94700 Maisons-Alfort, France
| | - Stéphane Blot
- INSERM U955-E10, IMRB, Université Paris Est Créteil, Ecole nationale vétérinaire d'Alfort, 94700 Maisons-Alfort, France
| |
Collapse
|
3
|
Mayousse V, Jeandel A, Blanchard-Gutton N, Escriou C, Gnirs K, Shelton GD, Blot S. Evaluation of coexisting polymyositis in feline myasthenia gravis: A case series. Neuromuscul Disord 2017; 27:804-815. [PMID: 28687435 DOI: 10.1016/j.nmd.2017.06.006] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2016] [Revised: 06/13/2017] [Accepted: 06/14/2017] [Indexed: 12/27/2022]
Abstract
Acquired myasthenia gravis (MG) is relatively uncommon in cats. In humans, MG may be associated with other immune-mediated disorders, in particular polymyositis (PM). In this study, we described in-depth electrodiagnostic findings and pathological changes in muscles of cats diagnosed with MG, and assessed the presence of concurrent PM. Six cats with confirmed acetylcholine receptor antibody seropositive MG, and two suspected cases with clinical signs and electrophysiological changes consistent with MG, were reviewed. All animals presented with severe typical signs of generalized weakness and/or fatigability, resembling late-onset MG in humans, in addition to regurgitation. Five cats presented a cranial mediastinal mass, with 3 confirmed as thymoma. Repetitive nerve stimulation revealed a decrement of the compound muscle action potential in all tested cases, starting from low frequencies of stimulation. Serum creatine kinase activity was increased in 6/8 cats. Muscle biopsies performed in 5 cats revealed varying degrees of mixed mononuclear cell infiltrates, positive for the leukocyte markers CD3/CD4/CD8 and CD11b. Further MHC-1/C5b-9 positive sarcolemmal deposits were identified in all tested cases, with or without thymoma. This study documents an association of MG and PM in cats, and provides further support for feline MG as a relevant animal model of human MG.
Collapse
Affiliation(s)
- Vincent Mayousse
- Université Paris-Est, Ecole nationale vétérinaire d'Alfort (EnvA), Unité de Neurologie, 7 avenue du Général de Gaulle, 94700 Maisons-Alfort, France; Inserm, IMRB U955-E10 Biology of the Neuromuscular System, 8 rue du général Sarrail, 94000 Créteil, France.
| | - Aurélien Jeandel
- Université Paris-Est, Ecole nationale vétérinaire d'Alfort (EnvA), Unité de Neurologie, 7 avenue du Général de Gaulle, 94700 Maisons-Alfort, France
| | - Nicolas Blanchard-Gutton
- Inserm, IMRB U955-E10 Biology of the Neuromuscular System, 8 rue du général Sarrail, 94000 Créteil, France
| | - Catherine Escriou
- Unité de Neurologie, VetAgro-Sup, Campus Veterinaire de Lyon, 1 Avenue Bourgelat, 69280 Marcy l'Etoile, France
| | - Kirsten Gnirs
- Clinique Advetia, 5 rue Dubrunfaut, 75012 Paris, France
| | - G Diane Shelton
- Department of Pathology, School of Medicine, University of California San Diego, La Jolla, CA 92093-0709, USA
| | - Stéphane Blot
- Université Paris-Est, Ecole nationale vétérinaire d'Alfort (EnvA), Unité de Neurologie, 7 avenue du Général de Gaulle, 94700 Maisons-Alfort, France; Inserm, IMRB U955-E10 Biology of the Neuromuscular System, 8 rue du général Sarrail, 94000 Créteil, France
| |
Collapse
|
4
|
Walmsley GL, Blot S, Venner K, Sewry C, Laporte J, Blondelle J, Barthélémy I, Maurer M, Blanchard-Gutton N, Pilot-Storck F, Tiret L, Piercy RJ. Progressive Structural Defects in Canine Centronuclear Myopathy Indicate a Role for HACD1 in Maintaining Skeletal Muscle Membrane Systems. Am J Pathol 2016; 187:441-456. [PMID: 27939133 DOI: 10.1016/j.ajpath.2016.10.002] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/01/2016] [Revised: 10/12/2016] [Accepted: 10/17/2016] [Indexed: 11/16/2022]
Abstract
Mutations in HACD1/PTPLA cause recessive congenital myopathies in humans and dogs. Hydroxyacyl-coA dehydratases are required for elongation of very long chain fatty acids, and HACD1 has a role in early myogenesis, but the functions of this striated muscle-specific enzyme in more differentiated skeletal muscle remain unknown. Canine HACD1 deficiency is histopathologically classified as a centronuclear myopathy (CNM). We investigated the hypothesis that muscle from HACD1-deficient dogs has membrane abnormalities in common with CNMs with different genetic causes. We found progressive changes in tubuloreticular and sarcolemmal membranes and mislocalized triads and mitochondria in skeletal muscle from animals deficient in HACD1. Furthermore, comparable membranous abnormalities in cultured HACD1-deficient myotubes provide additional evidence that these defects are a primary consequence of altered HACD1 expression. Our novel findings, including T-tubule dilatation and disorganization, associated with defects in this additional CNM-associated gene provide a definitive pathophysiologic link with these disorders, confirm that dogs deficient in HACD1 are relevant models, and strengthen the evidence for a unifying pathogenesis in CNMs via defective membrane trafficking and excitation-contraction coupling in muscle. These results build on previous work by determining further functional roles of HACD1 in muscle and provide new insight into the pathology and pathogenetic mechanisms of HACD1 CNM. Consequently, alterations in membrane properties associated with HACD1 mutations should be investigated in humans with related phenotypes.
Collapse
Affiliation(s)
- Gemma L Walmsley
- Comparative Neuromuscular Diseases Laboratory, Department of Clinical Sciences and Services, Royal Veterinary College, London, United Kingdom.
| | - Stéphane Blot
- French National Institute of Health and Medical Research (Inserm), Mondor Institute of Biomedical Research (IMRB) U955-E10 Biology of the Neuromuscular System, Créteil, France; University of Paris East, Alfort School of Veterinary Medicine (EnvA), Maisons-Alfort, France
| | - Kerrie Venner
- Electron Microscopy Unit, Institute of Neurology, London, United Kingdom
| | - Caroline Sewry
- Dubowitz Neuromuscular Centre, University College London Institute of Child Health and Great Ormond Street Hospital, London, United Kingdom
| | - Jocelyn Laporte
- Department of Translational Medicine and Neurogenetics, Institute of Genetics and Cellular and Molecular Biology (IGBMC), Inserm U964, CNRS UMR7104, Strasbourg University, Illkirch, France
| | - Jordan Blondelle
- French National Institute of Health and Medical Research (Inserm), Mondor Institute of Biomedical Research (IMRB) U955-E10 Biology of the Neuromuscular System, Créteil, France; University of Paris East, Alfort School of Veterinary Medicine (EnvA), Maisons-Alfort, France
| | - Inès Barthélémy
- French National Institute of Health and Medical Research (Inserm), Mondor Institute of Biomedical Research (IMRB) U955-E10 Biology of the Neuromuscular System, Créteil, France; University of Paris East, Alfort School of Veterinary Medicine (EnvA), Maisons-Alfort, France
| | - Marie Maurer
- French National Institute of Health and Medical Research (Inserm), Mondor Institute of Biomedical Research (IMRB) U955-E10 Biology of the Neuromuscular System, Créteil, France; University of Paris East, Alfort School of Veterinary Medicine (EnvA), Maisons-Alfort, France
| | - Nicolas Blanchard-Gutton
- French National Institute of Health and Medical Research (Inserm), Mondor Institute of Biomedical Research (IMRB) U955-E10 Biology of the Neuromuscular System, Créteil, France; University of Paris East, Alfort School of Veterinary Medicine (EnvA), Maisons-Alfort, France
| | - Fanny Pilot-Storck
- French National Institute of Health and Medical Research (Inserm), Mondor Institute of Biomedical Research (IMRB) U955-E10 Biology of the Neuromuscular System, Créteil, France; University of Paris East, Alfort School of Veterinary Medicine (EnvA), Maisons-Alfort, France
| | - Laurent Tiret
- French National Institute of Health and Medical Research (Inserm), Mondor Institute of Biomedical Research (IMRB) U955-E10 Biology of the Neuromuscular System, Créteil, France; University of Paris East, Alfort School of Veterinary Medicine (EnvA), Maisons-Alfort, France
| | - Richard J Piercy
- Comparative Neuromuscular Diseases Laboratory, Department of Clinical Sciences and Services, Royal Veterinary College, London, United Kingdom
| |
Collapse
|
5
|
Porte Thomé F, Su J, Barthelemy I, Blanchard-Gutton N, Bkaily G, Yu Q, Nagaraju K, Galeh B, Blot S. Translational development of rimeporide, a sodium-hydrogen exchanger (NHE-1) inhibitor, for patients with Duchenne muscular dystrophy. Neuromuscul Disord 2016. [DOI: 10.1016/j.nmd.2016.06.254] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
6
|
Redelsperger F, Raddi N, Bacquin A, Vernochet C, Mariot V, Gache V, Blanchard-Gutton N, Charrin S, Tiret L, Dumonceaux J, Dupressoir A, Heidmann T. Genetic Evidence That Captured Retroviral Envelope syncytins Contribute to Myoblast Fusion and Muscle Sexual Dimorphism in Mice. PLoS Genet 2016; 12:e1006289. [PMID: 27589388 PMCID: PMC5010199 DOI: 10.1371/journal.pgen.1006289] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2016] [Accepted: 08/10/2016] [Indexed: 01/28/2023] Open
Abstract
Syncytins are envelope genes from endogenous retroviruses, “captured” for a role in placentation. They mediate cell-cell fusion, resulting in the formation of a syncytium (the syncytiotrophoblast) at the fetomaternal interface. These genes have been found in all placental mammals in which they have been searched for. Cell-cell fusion is also pivotal for muscle fiber formation and repair, where the myotubes are formed from the fusion of mononucleated myoblasts into large multinucleated structures. Here we show, taking advantage of mice knocked out for syncytins, that these captured genes contribute to myoblast fusion, with a >20% reduction in muscle mass, mean muscle fiber area and number of nuclei per fiber in knocked out mice for one of the two murine syncytin genes. Remarkably, this reduction is only observed in males, which subsequently show muscle quantitative traits more similar to those of females. In addition, we show that syncytins also contribute to muscle repair after cardiotoxin-induced injury, with again a male-specific effect on the rate and extent of regeneration. Finally, ex vivo experiments carried out on murine myoblasts demonstrate the direct involvement of syncytins in fusion, with a >40% reduction in fusion index upon addition of siRNA against both syncytins. Importantly, similar effects are observed with primary myoblasts from sheep, dog and human, with a 20–40% reduction upon addition of siRNA against the corresponding syncytins. Altogether, these results show a direct contribution of the fusogenic syncytins to myogenesis, with a demonstrated male-dependence of the effect in mice, suggesting that these captured genes could be responsible for the muscle sexual dimorphism observed in placental mammals. Syncytins are “captured” genes of retroviral origin, corresponding to the fusogenic envelope gene of endogenized retroviruses. They are present in all placental mammals in which they have been searched for, where they play an essential role in placentation via their cell-cell fusion activity. Here we show that they also contribute to myoblast fusion and muscle formation in development and repair after injury, using both in vivo knock-out mouse models and ex vivo primary myoblast cell cultures from several mammals, including humans, carnivores and ruminants. Interestingly, the effects observed in mice are sex-dependent, thus suggesting that the added “collateral” effect of syncytins on myogenesis could be responsible for the muscle sexual dimorphism observed in placental mammals.
Collapse
Affiliation(s)
- François Redelsperger
- Unité Physiologie et Pathologie Moléculaires des Rétrovirus Endogènes et Infectieux, CNRS UMR 9196, Institut Gustave Roussy, Villejuif, France
- Université Paris-Sud, Orsay, France
| | - Najat Raddi
- Unité Physiologie et Pathologie Moléculaires des Rétrovirus Endogènes et Infectieux, CNRS UMR 9196, Institut Gustave Roussy, Villejuif, France
- Université Paris-Sud, Orsay, France
| | - Agathe Bacquin
- Unité Physiologie et Pathologie Moléculaires des Rétrovirus Endogènes et Infectieux, CNRS UMR 9196, Institut Gustave Roussy, Villejuif, France
- Université Paris-Sud, Orsay, France
| | - Cécile Vernochet
- Unité Physiologie et Pathologie Moléculaires des Rétrovirus Endogènes et Infectieux, CNRS UMR 9196, Institut Gustave Roussy, Villejuif, France
- Université Paris-Sud, Orsay, France
| | - Virginie Mariot
- UPMC Université-Paris 6, UM 76, Paris, France
- INSERM U974, Paris, France
- CNRS UMR 7215, Paris, France
- Institut de Myologie, Paris, France
| | - Vincent Gache
- INSERM IMRB U955-E10, Créteil, France
- Université Paris-Est, Ecole nationale vétérinaire d'Alfort, Maisons-Alfort, France
- Université Paris-Est Créteil, Faculté de médecine, Créteil, France
| | - Nicolas Blanchard-Gutton
- INSERM IMRB U955-E10, Créteil, France
- Université Paris-Est, Ecole nationale vétérinaire d'Alfort, Maisons-Alfort, France
- Université Paris-Est Créteil, Faculté de médecine, Créteil, France
| | - Stéphanie Charrin
- INSERM U935, Villejuif, France
- Université Paris-Sud, Institut André Lwoff, Villejuif, France
| | - Laurent Tiret
- INSERM IMRB U955-E10, Créteil, France
- Université Paris-Est, Ecole nationale vétérinaire d'Alfort, Maisons-Alfort, France
- Université Paris-Est Créteil, Faculté de médecine, Créteil, France
| | - Julie Dumonceaux
- UPMC Université-Paris 6, UM 76, Paris, France
- INSERM U974, Paris, France
- CNRS UMR 7215, Paris, France
- Institut de Myologie, Paris, France
| | - Anne Dupressoir
- Unité Physiologie et Pathologie Moléculaires des Rétrovirus Endogènes et Infectieux, CNRS UMR 9196, Institut Gustave Roussy, Villejuif, France
- Université Paris-Sud, Orsay, France
| | - Thierry Heidmann
- Unité Physiologie et Pathologie Moléculaires des Rétrovirus Endogènes et Infectieux, CNRS UMR 9196, Institut Gustave Roussy, Villejuif, France
- Université Paris-Sud, Orsay, France
- * E-mail:
| |
Collapse
|
7
|
Abitbol M, Hitte C, Bossé P, Blanchard-Gutton N, Thomas A, Martignat L, Blot S, Tiret L. A COLQ Missense Mutation in Sphynx and Devon Rex Cats with Congenital Myasthenic Syndrome. PLoS One 2015; 10:e0137019. [PMID: 26327126 PMCID: PMC4556666 DOI: 10.1371/journal.pone.0137019] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2015] [Accepted: 08/11/2015] [Indexed: 11/25/2022] Open
Abstract
An autosomal recessive neuromuscular disorder characterized by skeletal muscle weakness, fatigability and variable electromyographic or muscular histopathological features has been described in the two related Sphynx and Devon Rex cat breeds (Felis catus). Collection of data from two affected Sphynx cats and their relatives pointed out a single disease candidate region on feline chromosome C2, identified following a genome-wide SNP-based homozygosity mapping strategy. In that region, we further identified COLQ (collagen-like tail subunit of asymmetric acetylcholinesterase) as a good candidate gene, since COLQ mutations were identified in affected humans and dogs with endplate acetylcholinesterase deficiency leading to a synaptic form of congenital myasthenic syndrome (CMS). A homozygous c.1190G>A missense variant located in exon 15 of COLQ, leading to a C397Y substitution, was identified in the two affected cats. C397 is a highly-conserved residue from the C-terminal domain of the protein; its mutation was previously shown to produce CMS in humans, and here we confirmed in an affected Sphynx cat that it induces a loss of acetylcholinesterase clustering at the neuromuscular junction. Segregation of the c.1190G>A variant was 100% consistent with the autosomal recessive mode of inheritance of the disorder in our cat pedigree; in addition, an affected, unrelated Devon Rex cat recruited thereafter was also homozygous for the variant. Genotyping of a panel of 333 cats from 14 breeds failed to identify a single carrier in non-Sphynx and non-Devon Rex cats. Finally, the percentage of healthy carriers in a European subpanel of 81 genotyped Sphynx cats was estimated to be low (3.7%) and 14 control Devon Rex cats were genotyped as wild-type individuals. Altogether, these results strongly support that the neuromuscular disorder reported in Sphynx and Devon Rex breeds is a CMS caused by a unique c.1190G>A missense mutation, presumably transmitted through a founder effect, which strictly and slightly disseminated in these two breeds. The presently available DNA test will help owners avoid matings at risk.
Collapse
Affiliation(s)
- Marie Abitbol
- Inserm, IMRB U955-E10, 94000, Créteil, France
- Université Paris Est, Ecole nationale vétérinaire d'Alfort, 94700, Maisons-Alfort, & Faculté de médecine, 94000, Créteil, France
- Etablissement Français du Sang, 94017, Créteil, France
- APHP, Hôpitaux Universitaires Henri Mondor, DHU Pepsy & Centre de référence des maladies neuromusculaires GNMH, 94000 Créteil, France
- * E-mail:
| | - Christophe Hitte
- Institut de Génétique et Développement de Rennes IGDR, UMR6290 CNRS—Université de Rennes 1, Rennes, France
| | - Philippe Bossé
- Inserm, IMRB U955-E10, 94000, Créteil, France
- Université Paris Est, Ecole nationale vétérinaire d'Alfort, 94700, Maisons-Alfort, & Faculté de médecine, 94000, Créteil, France
- Etablissement Français du Sang, 94017, Créteil, France
- APHP, Hôpitaux Universitaires Henri Mondor, DHU Pepsy & Centre de référence des maladies neuromusculaires GNMH, 94000 Créteil, France
| | - Nicolas Blanchard-Gutton
- Inserm, IMRB U955-E10, 94000, Créteil, France
- Université Paris Est, Ecole nationale vétérinaire d'Alfort, 94700, Maisons-Alfort, & Faculté de médecine, 94000, Créteil, France
- Etablissement Français du Sang, 94017, Créteil, France
- APHP, Hôpitaux Universitaires Henri Mondor, DHU Pepsy & Centre de référence des maladies neuromusculaires GNMH, 94000 Créteil, France
| | - Anne Thomas
- Antagene, Animal Genetics Laboratory, La Tour de Salvagny, France
| | - Lionel Martignat
- ONIRIS, UP Sécurité Sanitaire en Biotechnologies de la Reproduction, Nantes, France
| | - Stéphane Blot
- Inserm, IMRB U955-E10, 94000, Créteil, France
- Université Paris Est, Ecole nationale vétérinaire d'Alfort, 94700, Maisons-Alfort, & Faculté de médecine, 94000, Créteil, France
- Etablissement Français du Sang, 94017, Créteil, France
- APHP, Hôpitaux Universitaires Henri Mondor, DHU Pepsy & Centre de référence des maladies neuromusculaires GNMH, 94000 Créteil, France
| | - Laurent Tiret
- Inserm, IMRB U955-E10, 94000, Créteil, France
- Université Paris Est, Ecole nationale vétérinaire d'Alfort, 94700, Maisons-Alfort, & Faculté de médecine, 94000, Créteil, France
- Etablissement Français du Sang, 94017, Créteil, France
- APHP, Hôpitaux Universitaires Henri Mondor, DHU Pepsy & Centre de référence des maladies neuromusculaires GNMH, 94000 Créteil, France
| |
Collapse
|
8
|
Blondelle J, Ohno Y, Gache V, Guyot S, Storck S, Blanchard-Gutton N, Barthélémy I, Walmsley G, Rahier A, Gadin S, Maurer M, Guillaud L, Prola A, Ferry A, Aubin-Houzelstein G, Demarquoy J, Relaix F, Piercy RJ, Blot S, Kihara A, Tiret L, Pilot-Storck F. HACD1, a regulator of membrane composition and fluidity, promotes myoblast fusion and skeletal muscle growth. J Mol Cell Biol 2015; 7:429-40. [PMID: 26160855 PMCID: PMC4589950 DOI: 10.1093/jmcb/mjv049] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2015] [Accepted: 05/21/2015] [Indexed: 01/04/2023] Open
Abstract
The reduced diameter of skeletal myofibres is a hallmark of several congenital myopathies, yet the underlying cellular and molecular mechanisms remain elusive. In this study, we investigate the role of HACD1/PTPLA, which is involved in the elongation of the very long chain fatty acids, in muscle fibre formation. In humans and dogs, HACD1 deficiency leads to a congenital myopathy with fibre size disproportion associated with a generalized muscle weakness. Through analysis of HACD1-deficient Labradors, Hacd1-knockout mice, and Hacd1-deficient myoblasts, we provide evidence that HACD1 promotes myoblast fusion during muscle development and regeneration. We further demonstrate that in normal differentiating myoblasts, expression of the catalytically active HACD1 isoform, which is encoded by a muscle-enriched splice variant, yields decreased lysophosphatidylcholine content, a potent inhibitor of myoblast fusion, and increased concentrations of ≥C18 and monounsaturated fatty acids of phospholipids. These lipid modifications correlate with a reduction in plasma membrane rigidity. In conclusion, we propose that fusion impairment constitutes a novel, non-exclusive pathological mechanism operating in congenital myopathies and reveal that HACD1 is a key regulator of a lipid-dependent muscle fibre growth mechanism.
Collapse
Affiliation(s)
- Jordan Blondelle
- Inserm, IMRB U955-E10, 94000 Créteil, France Université Paris-Est, Ecole nationale vétérinaire d'Alfort (EnvA), 94700 Maisons-Alfort, France Université Paris-Est Créteil, Faculté de médecine, 94000 Créteil, France
| | - Yusuke Ohno
- Laboratory of Biochemistry, Faculty of Pharmaceutical Sciences, Hokkaido University, Sapporo 060-0812, Japan
| | - Vincent Gache
- Inserm, IMRB U955-E10, 94000 Créteil, France Université Paris-Est, Ecole nationale vétérinaire d'Alfort (EnvA), 94700 Maisons-Alfort, France Université Paris-Est Créteil, Faculté de médecine, 94000 Créteil, France
| | - Stéphane Guyot
- Université de Bourgogne, UMR A 02.102 PAM-EPMB, AgroSup Dijon, 21000 Dijon, France
| | - Sébastien Storck
- Institut Necker-Enfants Malades, INSERM U1151-CNRS UMR 8253, Sorbonne Paris Cité, Université Paris Descartes, Faculté de Médecine-Site Broussais, 75015 Paris, France
| | - Nicolas Blanchard-Gutton
- Inserm, IMRB U955-E10, 94000 Créteil, France Université Paris-Est, Ecole nationale vétérinaire d'Alfort (EnvA), 94700 Maisons-Alfort, France Université Paris-Est Créteil, Faculté de médecine, 94000 Créteil, France
| | - Inès Barthélémy
- Inserm, IMRB U955-E10, 94000 Créteil, France Université Paris-Est, Ecole nationale vétérinaire d'Alfort (EnvA), 94700 Maisons-Alfort, France Université Paris-Est Créteil, Faculté de médecine, 94000 Créteil, France
| | - Gemma Walmsley
- Comparative Neuromuscular Disease Laboratory, Department of Clinical Sciences and Services, Royal Veterinary College, London NW1 0TU, UK
| | - Anaëlle Rahier
- Inserm, IMRB U955-E10, 94000 Créteil, France Université Paris-Est, Ecole nationale vétérinaire d'Alfort (EnvA), 94700 Maisons-Alfort, France Université Paris-Est Créteil, Faculté de médecine, 94000 Créteil, France
| | - Stéphanie Gadin
- Inserm, IMRB U955-E10, 94000 Créteil, France Université Paris-Est, Ecole nationale vétérinaire d'Alfort (EnvA), 94700 Maisons-Alfort, France Université Paris-Est Créteil, Faculté de médecine, 94000 Créteil, France
| | - Marie Maurer
- Inserm, IMRB U955-E10, 94000 Créteil, France Université Paris-Est, Ecole nationale vétérinaire d'Alfort (EnvA), 94700 Maisons-Alfort, France Université Paris-Est Créteil, Faculté de médecine, 94000 Créteil, France
| | - Laurent Guillaud
- Inserm, IMRB U955-E10, 94000 Créteil, France Université Paris-Est, Ecole nationale vétérinaire d'Alfort (EnvA), 94700 Maisons-Alfort, France Université Paris-Est Créteil, Faculté de médecine, 94000 Créteil, France
| | - Alexandre Prola
- Inserm, IMRB U955-E10, 94000 Créteil, France Université Paris-Est, Ecole nationale vétérinaire d'Alfort (EnvA), 94700 Maisons-Alfort, France Université Paris-Est Créteil, Faculté de médecine, 94000 Créteil, France
| | - Arnaud Ferry
- Thérapie des maladies du muscle strié INSERM U974 - CNRS UMR7215 - UPMC UM76 - Institut de Myologie, Université Pierre et Marie Curie - Université Paris Descartes, 75000 Paris, France
| | - Geneviève Aubin-Houzelstein
- Inserm, IMRB U955-E10, 94000 Créteil, France Université Paris-Est, Ecole nationale vétérinaire d'Alfort (EnvA), 94700 Maisons-Alfort, France Université Paris-Est Créteil, Faculté de médecine, 94000 Créteil, France
| | - Jean Demarquoy
- Université de Bourgogne, Faculté des Sciences Gabriel, Bio-PeroxIL, 21000 Dijon, France
| | - Frédéric Relaix
- Inserm, IMRB U955-E10, 94000 Créteil, France Université Paris-Est, Ecole nationale vétérinaire d'Alfort (EnvA), 94700 Maisons-Alfort, France Université Paris-Est Créteil, Faculté de médecine, 94000 Créteil, France
| | - Richard J Piercy
- Comparative Neuromuscular Disease Laboratory, Department of Clinical Sciences and Services, Royal Veterinary College, London NW1 0TU, UK
| | - Stéphane Blot
- Inserm, IMRB U955-E10, 94000 Créteil, France Université Paris-Est, Ecole nationale vétérinaire d'Alfort (EnvA), 94700 Maisons-Alfort, France Université Paris-Est Créteil, Faculté de médecine, 94000 Créteil, France
| | - Akio Kihara
- Laboratory of Biochemistry, Faculty of Pharmaceutical Sciences, Hokkaido University, Sapporo 060-0812, Japan
| | - Laurent Tiret
- Inserm, IMRB U955-E10, 94000 Créteil, France Université Paris-Est, Ecole nationale vétérinaire d'Alfort (EnvA), 94700 Maisons-Alfort, France Université Paris-Est Créteil, Faculté de médecine, 94000 Créteil, France
| | - Fanny Pilot-Storck
- Inserm, IMRB U955-E10, 94000 Créteil, France Université Paris-Est, Ecole nationale vétérinaire d'Alfort (EnvA), 94700 Maisons-Alfort, France Université Paris-Est Créteil, Faculté de médecine, 94000 Créteil, France
| |
Collapse
|
9
|
Su JB, Cazorla O, Blot S, Blanchard-Gutton N, Ait Mou Y, Barthélémy I, Sambin L, Sampedrano CC, Gouni V, Unterfinger Y, Aguilar P, Thibaud JL, Bizé A, Pouchelon JL, Dabiré H, Ghaleh B, Berdeaux A, Chetboul V, Lacampagne A, Hittinger L. Bradykinin restores left ventricular function, sarcomeric protein phosphorylation, and e/nNOS levels in dogs with Duchenne muscular dystrophy cardiomyopathy. Cardiovasc Res 2012; 95:86-96. [PMID: 22562664 DOI: 10.1093/cvr/cvs161] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
AIMS Cardiomyopathy is a lethal result of Duchenne muscular dystrophy (DMD), but its characteristics remain elusive. The golden retriever muscular dystrophy (GRMD) dogs produce DMD pathology and mirror DMD patient's symptoms, including cardiomyopathy. We previously showed that bradykinin slows the development of pacing-induced heart failure. Therefore, the goals of this research were to characterize dystrophin-deficiency cardiomyopathy and to examine cardiac effects of bradykinin in GRMD dogs. METHODS AND RESULTS At baseline, adult GRMD dogs had reduced fractional shortening (28 ± 2 vs. 38 ± 2% in control dogs, P < 0.001) and left ventricular (LV) subendocardial dysfunction leading to impaired endo-epicardial gradient of radial systolic velocity (1.3 ± 0.1 vs. 3.8 ± 0.2 cm/s in control dogs, P < 0.001) measured by echocardiography. These changes were normalized by bradykinin infusion (1 µg/min, 4 weeks). In isolated permeabilized LV subendocardial cells of GRMD dogs, tension-calcium relationships were shifted downward and force-generating capacity and transmural gradient of myofilament length-dependent activation were impaired compared with control dogs. Concomitantly, phosphorylation of sarcomeric regulatory proteins and levels of endothelial and neuronal nitric oxide synthase (e/nNOS) in LV myocardium were significantly altered in GRMD dogs. All these abnormalities were normalized in bradykinin-treated GRMD dogs. CONCLUSIONS Cardiomyopathy in GRMD dogs is characterized by profound LV subendocardial dysfunction, abnormal sarcomeric protein phosphorylation, and impaired e/nNOS, which can be normalized by bradykinin treatment. These data provide new insights into the pathophysiological mechanisms accounting for DMD cardiomyopathy and open new therapeutic perspectives.
Collapse
Affiliation(s)
- Jin Bo Su
- INSERM U955, ENVA, 7 avenu du Général de Gaulle, Maisons-Alfort, France.
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
10
|
Lacampagne A, Barthélémy I, Thibaud J, Blanchard-Gutton N, Unterfinger Y, Richard S, Ward C, Blot S. P1.30 Calcium sparks as dystrophic signals are present in GRMD muscles. Neuromuscul Disord 2011. [DOI: 10.1016/j.nmd.2011.06.790] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
|
11
|
Viengchareun S, Kamenicky P, Teixeira M, Butlen D, Meduri G, Blanchard-Gutton N, Kurschat C, Lanel A, Martinerie L, Sztal-Mazer S, Blot-Chabaud M, Ferrary E, Cherradi N, Lombès M. Osmotic stress regulates mineralocorticoid receptor expression in a novel aldosterone-sensitive cortical collecting duct cell line. Mol Endocrinol 2009; 23:1948-62. [PMID: 19846540 DOI: 10.1210/me.2009-0095] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023] Open
Abstract
Aldosterone effects are mediated by the mineralocorticoid receptor (MR), a transcription factor highly expressed in the distal nephron. Given that MR expression level constitutes a key element controlling hormone responsiveness, there is much interest in elucidating the molecular mechanisms governing MR expression. To investigate whether hyper- or hypotonicity could affect MR abundance, we established by targeted oncogenesis a novel immortalized cortical collecting duct (CCD) cell line and examined the impact of osmotic stress on MR expression. KC3AC1 cells form domes, exhibit a high transepithelial resistance, express 11beta-hydroxysteroid dehydrogenase 2 and functional endogenous MR, which mediates aldosterone-stimulated Na(+) reabsorption through the epithelial sodium channel activation. MR expression is tightly regulated by osmotic stress. Hypertonic conditions induce expression of tonicity-responsive enhancer binding protein, an osmoregulatory transcription factor capable of binding tonicity-responsive enhancer response elements located in MR regulatory sequences. Surprisingly, hypertonicity leads to a severe reduction in MR transcript and protein levels. This is accompanied by a concomitant tonicity-induced expression of Tis11b, a mRNA-destabilizing protein that, by binding to the AU-rich sequences of the 3'-untranslated region of MR mRNA, may favor hypertonicity-dependent degradation of labile MR transcripts. In sharp contrast, hypotonicity causes a strong increase in MR transcript and protein levels. Collectively, we demonstrate for the first time that optimal adaptation of CCD cells to changes in extracellular fluid composition is accompanied by drastic modification in MR abundance via transcriptional and posttranscriptional mechanisms. Osmotic stress-regulated MR expression may represent an important molecular determinant for cell-specific MR action, most notably in renal failure, hypertension, or mineralocorticoid resistance.
Collapse
|
12
|
Irnaten M, Blanchard-Gutton N, Praetorius J, Harvey BJ. Rapid effects of 17beta-estradiol on TRPV5 epithelial Ca2+ channels in rat renal cells. Steroids 2009; 74:642-9. [PMID: 19463684 DOI: 10.1016/j.steroids.2009.02.002] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/15/2008] [Revised: 01/27/2009] [Accepted: 02/09/2009] [Indexed: 10/21/2022]
Abstract
The renal distal tubules and collecting ducts play a key role in the control of electrolyte and fluid homeostasis. The discovery of highly calcium selective channels, Transient Receptor Potential Vanilloid 5 (TRPV5) of the TRP superfamily, has clarified the nature of the calcium entry channels. It has been proposed that this channel mediates the critical Ca(2+) entry step in transcellular Ca(2+) re-absorption in the kidney. The regulation of transmembrane Ca(2+) flux through TRPV5 is of particular importance for whole body calcium homeostasis.In this study, we provide evidence that the TRPV5 channel is present in rat cortical collecting duct (RCCD(2)) cells at mRNA and protein levels. We demonstrate that 17beta-estradiol (E(2)) is involved in the regulation of Ca(2+) influx in these cells via the epithelial Ca(2+) channels TRPV5. By combining whole-cell patch-clamp and Ca(2+)-imaging techniques, we have characterized the electrophysiological properties of the TRPV5 channel and showed that treatment with 20-50nM E(2) rapidly (<5min) induced a transient increase in inward whole-cell currents and intracellular Ca(2+) via TRPV5 channels. This rise was significantly prevented when cells were pre-treated with ruthenium red and completely abolished in cells treated with siRNA specifically targeting TRPV5.These data demonstrate for the first time, a novel rapid modulation of endogenously expressed TRPV5 channels by E(2) in kidney cells. Furthermore, the results suggest calcitropic effects of E(2). The results are discussed in relation to present concepts of non-genomic actions of E(2) in Ca(2+) homeostasis.
Collapse
Affiliation(s)
- Mustapha Irnaten
- Molecular Medicine Laboratories, Royal College of Surgeons in Ireland, Beaumont Hospital, PO Box 9063, Dublin 9, Ireland.
| | | | | | | |
Collapse
|
13
|
Irnaten M, Blanchard-Gutton N, Harvey BJ. Rapid effects of 17beta-estradiol on epithelial TRPV6 Ca2+ channel in human T84 colonic cells. Cell Calcium 2008; 44:441-52. [PMID: 18395250 DOI: 10.1016/j.ceca.2008.02.007] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2007] [Revised: 01/18/2008] [Accepted: 02/12/2008] [Indexed: 11/19/2022]
Abstract
The control of calcium homeostasis is essential for cell survival and is of crucial importance for several physiological functions. The discovery of the epithelial calcium channel Transient Receptor Potential Vaniloid (TRPV6) in intestine has uncovered important Ca(2+) absorptive pathways involved in the regulation of whole body Ca(2+) homeostasis. The role of steroid hormone 17beta-estradiol (E(2)), in [Ca(2+)](i) regulation involving TRPV6 has been only limited at the protein expression levels in over-expressing heterologous systems. In the present study, using a combination of calcium-imaging, whole-cell patch-clamp techniques and siRNA technology to specifically knockdown TRPV6 protein expression, we were able to (i) show that TRPV6 is natively, rather than exogenously, expressed at mRNA and protein levels in human T84 colonic cells, (ii) characterize functional TRPV6 channels and (iii) demonstrate, for the first time, the rapid effects of E(2) in [Ca(2+)](i) regulation involving directly TRPV6 channels in T84 cells. Treatment with E(2) rapidly (<5 min) enhanced [Ca(2+)](i) and this increase was partially but significantly prevented when cells were pre-treated with ruthenium red and completely abolished in cells treated with siRNA specifically targeting TRPV6 protein expression. These results indicate that when cells are stimulated by E(2), Ca(2+) enters the cell through TRPV6 channels. TRPV6 channels in T84 cells contribute to the Ca(2+) entry/signalling pathway that is sensitive to 17beta-estradiol.
Collapse
Affiliation(s)
- Mustapha Irnaten
- Molecular Medicine Laboratories, Royal College of Surgeons in Ireland, Beaumont Hospital, Dublin, Ireland.
| | | | | |
Collapse
|