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Papadopoulos C, Malfatti E, Métay C, Keren B, Lejeune E, Buratti J, Xirou S, Chrysanthou-Piterou M, Papadimas GK. Deep Characterization of a Greek Patient with Desmin-Related Myofibrillar Myopathy and Cardiomyopathy. Int J Mol Sci 2023; 24:11181. [PMID: 37446359 DOI: 10.3390/ijms241311181] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2023] [Revised: 06/09/2023] [Accepted: 06/19/2023] [Indexed: 07/15/2023] Open
Abstract
Desmin is a class III intermediate filament protein highly expressed in cardiac, smooth and striated muscle. Autosomal dominant or recessive mutations in the desmin gene (DES) result in a variety of diseases, including cardiomyopathies and myofibrillar myopathy, collectively called desminopathies. Here we describe the clinical, histological and radiological features of a Greek patient with a myofibrillar myopathy and cardiomyopathy linked to the c.734A>G,p.(Glu245Gly) heterozygous variant in the DES gene. Moreover, through ribonucleic acid sequencing analysis in skeletal muscle we show that this variant provokes a defect in exon 3 splicing and thus should be considered clearly pathogenic.
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Affiliation(s)
- Constantinos Papadopoulos
- First Department of Neurology, Eginition Hospital, Medical School, National and Kapodistrian University of Athens, ERN, EURO NMD, 11528 Athens, Greece
| | - Edoardo Malfatti
- Centre de Référence de Pathologie Neuromusculaire Nord-Est-Ile-de-France, Université Paris Est, U955 INSERM, EnvA, EFS, IMRB, F-94010 and APHP, Henri Mondor Hospital, 94010 Créteil, France
| | - Corinne Métay
- APHP, Unité Fonctionnelle de Cardiogénétique et Myogénétique Moléculaire et Cellulaire, Centre de Génétique Moléculaire et Chromosomique, INSERM, Institut de Myologie, Groupe Hospitalier La Pitié-Salpêtrière-Charles Foix, Sorbonne Université, 75013 Paris, France
| | - Boris Keren
- APHP, Centre de Génétique Moléculaire et Chromosomique, UF Génétique du Développement, GH Pitié-Salpêtrière, 75013 Paris, France
| | - Elodie Lejeune
- APHP, Centre de Génétique Moléculaire et Chromosomique, UF Génétique du Développement, GH Pitié-Salpêtrière, 75013 Paris, France
| | - Julien Buratti
- APHP, Centre de Génétique Moléculaire et Chromosomique, UF Génétique du Développement, GH Pitié-Salpêtrière, 75013 Paris, France
| | - Sophia Xirou
- First Department of Neurology, Eginition Hospital, Medical School, National and Kapodistrian University of Athens, ERN, EURO NMD, 11528 Athens, Greece
| | - Margarita Chrysanthou-Piterou
- First Department of Neurology, Eginition Hospital, Medical School, National and Kapodistrian University of Athens, ERN, EURO NMD, 11528 Athens, Greece
| | - George K Papadimas
- First Department of Neurology, Eginition Hospital, Medical School, National and Kapodistrian University of Athens, ERN, EURO NMD, 11528 Athens, Greece
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Su W, van Wijk SW, Brundel BJJM. Desmin variants: Trigger for cardiac arrhythmias? Front Cell Dev Biol 2022; 10:986718. [PMID: 36158202 PMCID: PMC9500482 DOI: 10.3389/fcell.2022.986718] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2022] [Accepted: 08/22/2022] [Indexed: 11/30/2022] Open
Abstract
Desmin (DES) is a classical type III intermediate filament protein encoded by the DES gene. Desmin is abundantly expressed in cardiac, skeletal, and smooth muscle cells. In these cells, desmin interconnects several protein-protein complexes that cover cell-cell contact, intracellular organelles such as mitochondria and the nucleus, and the cytoskeletal network. The extra- and intracellular localization of the desmin network reveals its crucial role in maintaining the structural and mechanical integrity of cells. In the heart, desmin is present in specific structures of the cardiac conduction system including the sinoatrial node, atrioventricular node, and His-Purkinje system. Genetic variations and loss of desmin drive a variety of conditions, so-called desminopathies, which include desmin-related cardiomyopathy, conduction system-related atrial and ventricular arrhythmias, and sudden cardiac death. The severe cardiac disease outcomes emphasize the clinical need to understand the molecular and cellular role of desmin driving desminopathies. As the role of desmin in cardiomyopathies has been discussed thoroughly, the current review is focused on the role of desmin impairment as a trigger for cardiac arrhythmias. Here, the molecular and cellular mechanisms of desmin to underlie a healthy cardiac conduction system and how impaired desmin triggers cardiac arrhythmias, including atrial fibrillation, are discussed. Furthermore, an overview of available (genetic) desmin model systems for experimental cardiac arrhythmia studies is provided. Finally, potential implications for future clinical treatments of cardiac arrhythmias directed at desmin are highlighted.
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Affiliation(s)
- Wei Su
- Physiology, Amsterdam UMC Location Vrije Universiteit Amsterdam, Amsterdam, Netherlands
- Amsterdam Cardiovascular Sciences, Heart Failure and Arrhythmias, Amsterdam UMC Location Vrije Universiteit Amsterdam, Amsterdam, Netherlands
| | - Stan W. van Wijk
- Physiology, Amsterdam UMC Location Vrije Universiteit Amsterdam, Amsterdam, Netherlands
- Amsterdam Cardiovascular Sciences, Heart Failure and Arrhythmias, Amsterdam UMC Location Vrije Universiteit Amsterdam, Amsterdam, Netherlands
| | - Bianca J. J. M. Brundel
- Physiology, Amsterdam UMC Location Vrije Universiteit Amsterdam, Amsterdam, Netherlands
- Amsterdam Cardiovascular Sciences, Heart Failure and Arrhythmias, Amsterdam UMC Location Vrije Universiteit Amsterdam, Amsterdam, Netherlands
- *Correspondence: Bianca J. J. M. Brundel,
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Silva AMS, Rodrigo P, Moreno CAM, Mendonça RDH, Estephan EDP, Camelo CG, Campos ED, Dias AT, Nascimento AM, Kulikowski LD, Oliveira ASB, Reed UC, Goldfarb LG, Olivé M, Zanoteli E. The Location of Disease-Causing DES Variants Determines the Severity of Phenotype and the Morphology of Sarcoplasmic Aggregates. J Neuropathol Exp Neurol 2022; 81:746-757. [PMID: 35898174 DOI: 10.1093/jnen/nlac063] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Desmin (DES) is the main intermediate muscle filament that connects myofibrils individually and with the nucleus, sarcolemma, and organelles. Pathogenic variants of DES cause desminopathy, a disorder affecting the heart and skeletal muscles. We aimed to analyze the clinical features, morphology, and distribution of desmin aggregates in skeletal muscle biopsies of patients with desminopathy and to correlate these findings with the type and location of disease-causing DES variants. This retrospective study included 30 patients from 20 families with molecularly confirmed desminopathy from 2 neuromuscular referral centers. We identified 2 distinct patterns of desmin aggregates: well-demarcated subsarcolemmal aggregates and diffuse aggregates with poorly delimited borders. Pathogenic variants located in the 1B segment and the tail domain of the desmin molecule are more likely to present with early-onset cardiomyopathy compared to patients with variants in other segments. All patients with mutations in the 1B segment had well-demarcated subsarcolemmal aggregates, but none of the patients with variants in other desmin segments showed such histological features. We suggest that variants located in the 1B segment lead to well-shaped subsarcolemmal desmin aggregation and cause disease with more frequent cardiac manifestations. These findings will facilitate early identification of patients with potentially severe cardiac syndromes.
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Affiliation(s)
| | - Patricia Rodrigo
- Neuropathology Unit, Department of Pathology and Neuromuscular Unit, Department of Neurology, IDIBELL-Hospital Universitari de Bellvitge, Barcelona, Spain
| | | | | | - Eduardo de Paula Estephan
- Department of Neurology, Faculdade de Medicina, Universidade de São Paulo (FMUSP), São Paulo, Brazil
| | - Clara Gontijo Camelo
- Department of Neurology, Faculdade de Medicina, Universidade de São Paulo (FMUSP), São Paulo, Brazil
| | - Eliene Dutra Campos
- Department of Neurology, Faculdade de Medicina, Universidade de São Paulo (FMUSP), São Paulo, Brazil
| | - Alexandre Torchio Dias
- Department of Pathology, Faculdade de Medicina, Universidade de São Paulo (FMUSP), São Paulo, Brazil
| | - Amom Mendes Nascimento
- Department of Pathology, Faculdade de Medicina, Universidade de São Paulo (FMUSP), São Paulo, Brazil
| | | | - Acary Souza Bulle Oliveira
- Division of Neuromuscular Diseases, Department of Neurology and Neurosurgery, Universidade Federal de São Paulo (UNIFESP), São Paulo, SP, Brazil
| | - Umbertina Conti Reed
- Department of Neurology, Faculdade de Medicina, Universidade de São Paulo (FMUSP), São Paulo, Brazil
| | - Lev G Goldfarb
- Department of Pathology and Molecular Medicine, Queen's University, Kingston General Hospital, Kingston, Ontario, Canada
| | - Montse Olivé
- Neuropathology Unit, Department of Pathology and Neuromuscular Unit, Department of Neurology, IDIBELL-Hospital Universitari de Bellvitge, Barcelona, Spain
| | - Edmar Zanoteli
- Department of Neurology, Faculdade de Medicina, Universidade de São Paulo (FMUSP), São Paulo, Brazil
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Zheng M, Huang H, Zhu X, Ho H, Li L, Ji X. Clinical genetic testing in four highly suspected pediatric restrictive cardiomyopathy cases. BMC Cardiovasc Disord 2022; 22:240. [PMID: 35614389 PMCID: PMC9131548 DOI: 10.1186/s12872-022-02675-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2021] [Accepted: 05/13/2022] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Restrictive cardiomyopathy (RCM) presents a high risk for sudden cardiac death in pediatric patients. Constrictive pericarditis (CP) exhibits a similar clinical presentation to RCM and requires differential diagnosis. While mutations of genes that encode sarcomeric and cytoskeletal proteins may lead to RCM, infection, rather than gene mutation, is the main cause of CP. Genetic testing may be helpful in the clinical diagnosis of RCM. METHODS In this case series study, we screened for TNNI3, TNNT2, and DES gene mutations that are known to be etiologically linked to RCM in four pediatric patients with suspected RCM. RESULTS We identified one novel heterozygous mutation, c.517C>T (substitution, position 517 C → T) (amino acid conversion, p.Leu173Phe), and two already known heterozygous mutations, c.508C>T (substitution, position 508, C → T) (amino acid conversion, p.Arg170Trp) and c.575G>A (substitution, position 575, G → A) (amino acid conversion, p.Arg192His), in the TNNI3 gene in three of the four patients. CONCLUSION Our findings support the notion that genetic testing may be helpful in the clinical diagnosis of RCM.
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Affiliation(s)
- Min Zheng
- Children's Hospital of Chongqing Medical University, National Clinical Research Center for Child Health and Disorders, Ministry of Education Key Laboratory of Child Development and Disorders, China International Science and Technology Cooperation Base of Child Development and Critical Disorders, Chongqing Key Laboratory of Child Infection and Immunity, 136 Zhongshan 2nd Road, Yu Zhong District, Chongqing, 400014, China
| | - Hong Huang
- Pediatric Department, North-Kuanren General Hospital of Chongqing, Chongqing, 401121, China
| | - Xu Zhu
- Children's Hospital of Chongqing Medical University, National Clinical Research Center for Child Health and Disorders, Ministry of Education Key Laboratory of Child Development and Disorders, China International Science and Technology Cooperation Base of Child Development and Critical Disorders, Chongqing Key Laboratory of Child Infection and Immunity, 136 Zhongshan 2nd Road, Yu Zhong District, Chongqing, 400014, China
| | - Harvey Ho
- Auckland Bioengineering Institute, The University of Auckland, Private Bag 92019, Auckland, 1142, New Zealand
| | - Liling Li
- Children's Hospital of Chongqing Medical University, National Clinical Research Center for Child Health and Disorders, Ministry of Education Key Laboratory of Child Development and Disorders, China International Science and Technology Cooperation Base of Child Development and Critical Disorders, Chongqing Key Laboratory of Child Infection and Immunity, 136 Zhongshan 2nd Road, Yu Zhong District, Chongqing, 400014, China
| | - Xiaojuan Ji
- Children's Hospital of Chongqing Medical University, National Clinical Research Center for Child Health and Disorders, Ministry of Education Key Laboratory of Child Development and Disorders, China International Science and Technology Cooperation Base of Child Development and Critical Disorders, Chongqing Key Laboratory of Child Infection and Immunity, 136 Zhongshan 2nd Road, Yu Zhong District, Chongqing, 400014, China.
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Genetic Insights into Primary Restrictive Cardiomyopathy. J Clin Med 2022; 11:jcm11082094. [PMID: 35456187 PMCID: PMC9027761 DOI: 10.3390/jcm11082094] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2022] [Revised: 04/05/2022] [Accepted: 04/06/2022] [Indexed: 12/04/2022] Open
Abstract
Restrictive cardiomyopathy is a rare cardiac disease causing severe diastolic dysfunction, ventricular stiffness and dilated atria. In consequence, it induces heart failure often with preserved ejection fraction and is associated with a high mortality. Since it is a poor clinical prognosis, patients with restrictive cardiomyopathy frequently require heart transplantation. Genetic as well as non-genetic factors contribute to restrictive cardiomyopathy and a significant portion of cases are of unknown etiology. However, the genetic forms of restrictive cardiomyopathy and the involved molecular pathomechanisms are only partially understood. In this review, we summarize the current knowledge about primary genetic restrictive cardiomyopathy and describe its genetic landscape, which might be of interest for geneticists as well as for cardiologists.
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Shelly S, Talha N, Pereira NL, Engel AG, Johnson JN, Selcen D. Expanding Spectrum of Desmin-Related Myopathy, Long-term Follow-up, and Cardiac Transplantation. Neurology 2021; 97:e1150-e1158. [PMID: 34315782 DOI: 10.1212/wnl.0000000000012542] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2021] [Accepted: 06/22/2021] [Indexed: 11/15/2022] Open
Abstract
OBJECTIVE We aimed to determine the genetic and clinical phenotypes of desmin-related myopathy patients and long-term outcomes after cardiac transplant. METHODS Retrospective review of cardiac and neurological manifestations of genetically confirmed desmin-related myopathy patients (Jan 1st, 1999-Jan 1st, 2020). RESULTS Twenty-five patients in 20 different families were recognized. Median age at onset of symptoms was 20 years (range: 4-50), median follow-up time of 36 months (range: 1-156). Twelve patients initially presented with skeletal muscle involvement and 13 with cardiac disease. Sixteen patients had both cardiac and skeletal muscle involvement. Clinically muscle weakness distribution was distal (n=11), proximal (n=4) or both (n=7) of 22 patients. Skeletal muscle biopsy from patients with missense and splice site variants (n=12) showed abnormal fibers containing amorphous material in Gomori trichrome stained sections. Patients with cardiac involvement had atrioventricular conduction abnormalities or cardiomyopathy. The most common ECG abnormality was complete AV block in 11 patients all of whom required a permanent pacemaker at a median age of 25 years (range: 16-48). Sudden cardiac death resulting in implantable cardioverter defibrillator (ICD) shocks or resuscitation were reported in 3 patients, a total of 5 patients had ICDs. Orthotopic cardiac transplantation was performed in 3 patients at 20, 35 and 39 years of age. CONCLUSIONS Pathogenic variants in desmin can lead to varied neurological and cardiac phenotypes beginning at a young age. Two-thirds of the patients have both neurologic and cardiac symptoms usually starting in the third decade. Heart transplant was tolerated with improved cardiac function and quality of life.
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Affiliation(s)
| | - Niaz Talha
- Department of Pediatric and Adolescent Medicine, Rochester, MN
| | | | | | | | - Duygu Selcen
- Department of Neurology, Mayo Clinic, Rochester, MN
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Genetic Restrictive Cardiomyopathy: Causes and Consequences-An Integrative Approach. Int J Mol Sci 2021; 22:ijms22020558. [PMID: 33429969 PMCID: PMC7827163 DOI: 10.3390/ijms22020558] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2020] [Revised: 01/05/2021] [Accepted: 01/06/2021] [Indexed: 12/12/2022] Open
Abstract
The sarcomere as the smallest contractile unit is prone to alterations in its functional, structural and associated proteins. Sarcomeric dysfunction leads to heart failure or cardiomyopathies like hypertrophic (HCM) or restrictive cardiomyopathy (RCM) etc. Genetic based RCM, a very rare but severe disease with a high mortality rate, might be induced by mutations in genes of non-sarcomeric, sarcomeric and sarcomere associated proteins. In this review, we discuss the functional effects in correlation to the phenotype and present an integrated model for the development of genetic RCM.
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Parrotta EI, Lucchino V, Scaramuzzino L, Scalise S, Cuda G. Modeling Cardiac Disease Mechanisms Using Induced Pluripotent Stem Cell-Derived Cardiomyocytes: Progress, Promises and Challenges. Int J Mol Sci 2020; 21:E4354. [PMID: 32575374 PMCID: PMC7352327 DOI: 10.3390/ijms21124354] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2020] [Revised: 06/12/2020] [Accepted: 06/15/2020] [Indexed: 12/12/2022] Open
Abstract
Cardiovascular diseases (CVDs) are a class of disorders affecting the heart or blood vessels. Despite progress in clinical research and therapy, CVDs still represent the leading cause of mortality and morbidity worldwide. The hallmarks of cardiac diseases include heart dysfunction and cardiomyocyte death, inflammation, fibrosis, scar tissue, hyperplasia, hypertrophy, and abnormal ventricular remodeling. The loss of cardiomyocytes is an irreversible process that leads to fibrosis and scar formation, which, in turn, induce heart failure with progressive and dramatic consequences. Both genetic and environmental factors pathologically contribute to the development of CVDs, but the precise causes that trigger cardiac diseases and their progression are still largely unknown. The lack of reliable human model systems for such diseases has hampered the unraveling of the underlying molecular mechanisms and cellular processes involved in heart diseases at their initial stage and during their progression. Over the past decade, significant scientific advances in the field of stem cell biology have literally revolutionized the study of human disease in vitro. Remarkably, the possibility to generate disease-relevant cell types from induced pluripotent stem cells (iPSCs) has developed into an unprecedented and powerful opportunity to achieve the long-standing ambition to investigate human diseases at a cellular level, uncovering their molecular mechanisms, and finally to translate bench discoveries into potential new therapeutic strategies. This review provides an update on previous and current research in the field of iPSC-driven cardiovascular disease modeling, with the aim of underlining the potential of stem-cell biology-based approaches in the elucidation of the pathophysiology of these life-threatening diseases.
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Desminopathy: Novel Desmin Variants, a New Cardiac Phenotype, and Further Evidence for Secondary Mitochondrial Dysfunction. J Clin Med 2020; 9:jcm9040937. [PMID: 32235386 PMCID: PMC7231262 DOI: 10.3390/jcm9040937] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2020] [Revised: 03/20/2020] [Accepted: 03/24/2020] [Indexed: 12/13/2022] Open
Abstract
Background: The pleomorphic clinical presentation makes the diagnosis of desminopathy difficult. We aimed to describe the prevalence, phenotypic expression, and mitochondrial function of individuals with putative disease-causing desmin (DES) variants identified in patients with an unexplained etiology of cardiomyopathy. Methods: A total of 327 Czech patients underwent whole exome sequencing and detailed phenotyping in probands harboring DES variants. Results: Rare, conserved, and possibly pathogenic DES variants were identified in six (1.8%) probands. Two DES variants previously classified as variants of uncertain significance (p.(K43E), p.(S57L)), one novel DES variant (p.(A210D)), and two known pathogenic DES variants (p.(R406W), p.(R454W)) were associated with characteristic desmin-immunoreactive aggregates in myocardial and/or skeletal biopsy samples. The individual with the novel DES variant p.(Q364H) had a decreased myocardial expression of desmin with absent desmin aggregates in myocardial/skeletal muscle biopsy and presented with familial left ventricular non-compaction cardiomyopathy (LVNC), a relatively novel phenotype associated with desminopathy. An assessment of the mitochondrial function in four probands heterozygous for a disease-causing DES variant confirmed a decreased metabolic capacity of mitochondrial respiratory chain complexes in myocardial/skeletal muscle specimens, which was in case of myocardial succinate respiration more profound than in other cardiomyopathies. Conclusions: The presence of desminopathy should also be considered in individuals with LVNC, and in the differential diagnosis of mitochondrial diseases.
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Stöckigt F, Eichhorn L, Beiert T, Knappe V, Radecke T, Steinmetz M, Nickenig G, Peeva V, Kudin AP, Kunz WS, Berwanger C, Kamm L, Schultheis D, Schlötzer-Schrehardt U, Clemen CS, Schröder R, Schrickel JW. Heart failure after pressure overload in autosomal-dominant desminopathies: Lessons from heterozygous DES-p.R349P knock-in mice. PLoS One 2020; 15:e0228913. [PMID: 32126091 PMCID: PMC7053759 DOI: 10.1371/journal.pone.0228913] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2019] [Accepted: 01/27/2020] [Indexed: 11/21/2022] Open
Abstract
Background Mutations in the human desmin gene (DES) cause autosomal-dominant and -recessive cardiomyopathies, leading to heart failure, arrhythmias, and AV blocks. We analyzed the effects of vascular pressure overload in a patient-mimicking p.R349P desmin knock-in mouse model that harbors the orthologue of the frequent human DES missense mutation p.R350P. Methods and results Transverse aortic constriction (TAC) was performed on heterozygous (HET) DES-p.R349P mice and wild-type (WT) littermates. Echocardiography demonstrated reduced left ventricular ejection fraction in HET-TAC (WT-sham: 69.5 ± 2.9%, HET-sham: 64.5 ± 4.7%, WT-TAC: 63.5 ± 4.9%, HET-TAC: 55.7 ± 5.4%; p<0.01). Cardiac output was significantly reduced in HET-TAC (WT sham: 13088 ± 2385 μl/min, HET sham: 10391 ± 1349μl/min, WT-TAC: 8097 ± 1903μl/min, HET-TAC: 5793 ± 2517μl/min; p<0.01). Incidence and duration of AV blocks as well as the probability to induce ventricular tachycardias was highest in HET-TAC. We observed reduced mtDNA copy numbers in HET-TAC (WT-sham: 12546 ± 406, HET-sham: 13526 ± 781, WT-TAC: 11155 ± 3315, HET-TAC: 8649 ± 1582; p = 0.025), but no mtDNA deletions. The activity of respiratory chain complexes I and IV showed the greatest reductions in HET-TAC. Conclusion Pressure overload in HET mice aggravated the clinical phenotype of cardiomyopathy and resulted in mitochondrial dysfunction. Preventive avoidance of pressure overload/arterial hypertension in desminopathy patients might represent a crucial therapeutic measure.
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Affiliation(s)
- Florian Stöckigt
- Department of Cardiology, University Hospital Bonn, Bonn, Germany
- Department of Cardiology, Krankenhaus Porz, Urbacher Weg, Cologne, Germany
- * E-mail:
| | - Lars Eichhorn
- Department of Anesthesiology, University Hospital Bonn, Bonn, Germany
| | - Thomas Beiert
- Department of Cardiology, University Hospital Bonn, Bonn, Germany
| | - Vincent Knappe
- Department of Cardiology, University Hospital Bonn, Bonn, Germany
| | - Tobias Radecke
- Department of Cardiology, University Hospital Essen, Hufelandstraße, Essen, Germany
| | - Martin Steinmetz
- Department of Cardiology, University Hospital Essen, Hufelandstraße, Essen, Germany
| | - Georg Nickenig
- Department of Cardiology, University Hospital Bonn, Bonn, Germany
| | - Viktoriya Peeva
- Institute of Experimental Epileptology and Cognition Research, Bonn, Germany
- Department of Epileptology, University Hospital of Bonn, Bonn, Germany
| | - Alexei P. Kudin
- Institute of Experimental Epileptology and Cognition Research, Bonn, Germany
- Department of Epileptology, University Hospital of Bonn, Bonn, Germany
| | - Wolfram S. Kunz
- Institute of Experimental Epileptology and Cognition Research, Bonn, Germany
- Department of Epileptology, University Hospital of Bonn, Bonn, Germany
| | - Carolin Berwanger
- Institute of Aerospace Medicine, German Aerospace Center (DLR), Linder Höhe, Cologne, Germany
| | - Lisa Kamm
- Institute of Neuropathology, University Hospital Erlangen, Friedrich-Alexander University Erlangen-Nürnberg, Schwabachanlage, Erlangen, Germany
| | - Dorothea Schultheis
- Institute of Neuropathology, University Hospital Erlangen, Friedrich-Alexander University Erlangen-Nürnberg, Schwabachanlage, Erlangen, Germany
| | - Ursula Schlötzer-Schrehardt
- Department of Opthalmology, University Hospital Erlangen, Friedrich-Alexander University Erlangen-Nürnberg, Schwabachanlage, Erlangen, Germany
| | - Christoph S. Clemen
- Institute of Aerospace Medicine, German Aerospace Center (DLR), Linder Höhe, Cologne, Germany
- Institute of Neuropathology, University Hospital Erlangen, Friedrich-Alexander University Erlangen-Nürnberg, Schwabachanlage, Erlangen, Germany
- Center for Biochemistry, Institute of Biochemistry I, Medical Faculty, University of Cologne, Cologne, Germany
- Center for Physiology and Pathophysiology, Institute of Vegetative Physiology, Medical Faculty, University of Cologne, Cologne, Germany
| | - Rolf Schröder
- Institute of Neuropathology, University Hospital Erlangen, Friedrich-Alexander University Erlangen-Nürnberg, Schwabachanlage, Erlangen, Germany
| | - Jan W. Schrickel
- Department of Cardiology, University Hospital Bonn, Bonn, Germany
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Restrictive Cardiomyopathy is Caused by a Novel Homozygous Desmin ( DES) Mutation p.Y122H Leading to a Severe Filament Assembly Defect. Genes (Basel) 2019; 10:genes10110918. [PMID: 31718026 PMCID: PMC6896098 DOI: 10.3390/genes10110918] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2019] [Revised: 11/05/2019] [Accepted: 11/08/2019] [Indexed: 12/29/2022] Open
Abstract
Here, we present a small Iranian family, where the index patient received a diagnosis of restrictive cardiomyopathy (RCM) in combination with atrioventricular (AV) block. Genetic analysis revealed a novel homozygous missense mutation in the DES gene (c.364T > C; p.Y122H), which is absent in human population databases. The mutation is localized in the highly conserved coil-1 desmin subdomain. In silico, prediction tools indicate a deleterious effect of the desmin (DES) mutation p.Y122H. Consequently, we generated an expression plasmid encoding the mutant and wildtype desmin formed, and analyzed the filament formation in vitro in cardiomyocytes derived from induced pluripotent stem cells and HT-1080 cells. Confocal microscopy revealed a severe filament assembly defect of mutant desmin supporting the pathogenicity of the DES mutation, p.Y122H, whereas the wildtype desmin formed regular intermediate filaments. According to the guidelines of the American College of Medical Genetics and Genomics, we classified this mutation, therefore, as a novel pathogenic mutation. Our report could point to a recessive inheritance of the DES mutation, p.Y122H, which is important for the genetic counseling of similar families with restrictive cardiomyopathy caused by DES mutations.
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12
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Arbustini E, Di Toro A, Giuliani L, Favalli V, Narula N, Grasso M. Cardiac Phenotypes in Hereditary Muscle Disorders: JACC State-of-the-Art Review. J Am Coll Cardiol 2019; 72:2485-2506. [PMID: 30442292 DOI: 10.1016/j.jacc.2018.08.2182] [Citation(s) in RCA: 58] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/10/2018] [Revised: 07/20/2018] [Accepted: 08/10/2018] [Indexed: 01/05/2023]
Abstract
Hereditary muscular diseases commonly involve the heart. Cardiac manifestations encompass a spectrum of phenotypes, including both cardiomyopathies and rhythm disorders. Common biomarkers suggesting cardiomuscular diseases include increased circulating creatine kinase and/or lactic acid levels or disease-specific metabolic indicators. Cardiac and extra-cardiac traits, imaging tests, family studies, and genetic testing provide precise diagnoses. Cardiac phenotypes are mainly dilated and hypokinetic in dystrophinopathies, Emery-Dreifuss muscular dystrophies, and limb girdle muscular dystrophies; hypertrophic in Friedreich ataxia, mitochondrial diseases, glycogen storage diseases, and fatty acid oxidation disorders; and restrictive in myofibrillar myopathies. Left ventricular noncompaction is variably associated with the different myopathies. Conduction defects and arrhythmias constitute a major phenotype in myotonic dystrophies and skeletal muscle channelopathies. Although the actual cardiac management is rarely based on the cause, the cardiac phenotypes need precise characterization because they are often the only or the predominant manifestations and the prognostic determinants of many hereditary muscle disorders.
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Affiliation(s)
- Eloisa Arbustini
- Centre for Inherited Cardiovascular Diseases, IRCCS Foundation, University Hospital Policlinico San Matteo, Pavia, Italy.
| | - Alessandro Di Toro
- Centre for Inherited Cardiovascular Diseases, IRCCS Foundation, University Hospital Policlinico San Matteo, Pavia, Italy
| | - Lorenzo Giuliani
- Centre for Inherited Cardiovascular Diseases, IRCCS Foundation, University Hospital Policlinico San Matteo, Pavia, Italy
| | | | - Nupoor Narula
- Centre for Inherited Cardiovascular Diseases, IRCCS Foundation, University Hospital Policlinico San Matteo, Pavia, Italy; Division of Cardiology, Department of Medicine, New York Presbyterian Hospital, Weill Cornell Medicine, New York, New York
| | - Maurizia Grasso
- Centre for Inherited Cardiovascular Diseases, IRCCS Foundation, University Hospital Policlinico San Matteo, Pavia, Italy
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Brodehl A, Ebbinghaus H, Deutsch MA, Gummert J, Gärtner A, Ratnavadivel S, Milting H. Human Induced Pluripotent Stem-Cell-Derived Cardiomyocytes as Models for Genetic Cardiomyopathies. Int J Mol Sci 2019; 20:ijms20184381. [PMID: 31489928 PMCID: PMC6770343 DOI: 10.3390/ijms20184381] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2019] [Revised: 08/29/2019] [Accepted: 09/03/2019] [Indexed: 12/17/2022] Open
Abstract
In the last few decades, many pathogenic or likely pathogenic genetic mutations in over hundred different genes have been described for non-ischemic, genetic cardiomyopathies. However, the functional knowledge about most of these mutations is still limited because the generation of adequate animal models is time-consuming and challenging. Therefore, human induced pluripotent stem cells (iPSCs) carrying specific cardiomyopathy-associated mutations are a promising alternative. Since the original discovery that pluripotency can be artificially induced by the expression of different transcription factors, various patient-specific-induced pluripotent stem cell lines have been generated to model non-ischemic, genetic cardiomyopathies in vitro. In this review, we describe the genetic landscape of non-ischemic, genetic cardiomyopathies and give an overview about different human iPSC lines, which have been developed for the disease modeling of inherited cardiomyopathies. We summarize different methods and protocols for the general differentiation of human iPSCs into cardiomyocytes. In addition, we describe methods and technologies to investigate functionally human iPSC-derived cardiomyocytes. Furthermore, we summarize novel genome editing approaches for the genetic manipulation of human iPSCs. This review provides an overview about the genetic landscape of inherited cardiomyopathies with a focus on iPSC technology, which might be of interest for clinicians and basic scientists interested in genetic cardiomyopathies.
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Affiliation(s)
- Andreas Brodehl
- Erich and Hanna Klessmann Institute, Heart and Diabetes Center NRW, University Hospital of the Ruhr-University Bochum, Georgstrasse 11, D-32545 Bad Oeynhausen, Germany.
| | - Hans Ebbinghaus
- Erich and Hanna Klessmann Institute, Heart and Diabetes Center NRW, University Hospital of the Ruhr-University Bochum, Georgstrasse 11, D-32545 Bad Oeynhausen, Germany.
| | - Marcus-André Deutsch
- Department of Thoracic and Cardiovascular Surgery, Heart and Diabetes Center NRW, University Hospital Ruhr-University Bochum, Georgstrasse 11, D-32545 Bad Oeynhausen, Germany.
| | - Jan Gummert
- Erich and Hanna Klessmann Institute, Heart and Diabetes Center NRW, University Hospital of the Ruhr-University Bochum, Georgstrasse 11, D-32545 Bad Oeynhausen, Germany.
- Department of Thoracic and Cardiovascular Surgery, Heart and Diabetes Center NRW, University Hospital Ruhr-University Bochum, Georgstrasse 11, D-32545 Bad Oeynhausen, Germany.
| | - Anna Gärtner
- Erich and Hanna Klessmann Institute, Heart and Diabetes Center NRW, University Hospital of the Ruhr-University Bochum, Georgstrasse 11, D-32545 Bad Oeynhausen, Germany.
| | - Sandra Ratnavadivel
- Erich and Hanna Klessmann Institute, Heart and Diabetes Center NRW, University Hospital of the Ruhr-University Bochum, Georgstrasse 11, D-32545 Bad Oeynhausen, Germany.
| | - Hendrik Milting
- Erich and Hanna Klessmann Institute, Heart and Diabetes Center NRW, University Hospital of the Ruhr-University Bochum, Georgstrasse 11, D-32545 Bad Oeynhausen, Germany.
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Delort F, Segard BD, Hakibilen C, Bourgois-Rocha F, Cabet E, Vicart P, Huang ME, Clary G, Lilienbaum A, Agbulut O, Batonnet-Pichon S. Alterations of redox dynamics and desmin post-translational modifications in skeletal muscle models of desminopathies. Exp Cell Res 2019; 383:111539. [PMID: 31369751 DOI: 10.1016/j.yexcr.2019.111539] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2019] [Revised: 07/24/2019] [Accepted: 07/27/2019] [Indexed: 11/24/2022]
Abstract
Desminopathies are a type of myofibrillar myopathy resulting from mutations in DES, encoding the intermediate filament protein desmin. They display heterogeneous phenotypes, suggesting environment influences. Patient muscle proteins show oxidative features linking oxidative stress, protein aggregation, and abnormal protein deposition. To improve understanding of redox balance in desminopathies, we further developed cellular models of four pathological mutants localized in 2B helical domain (the most important region for desmin polymerization) to explore desmin behavior upon oxidative stress. We show that the mutations desQ389P and desD399Y share common stress-induced aggregates, desR406W presents more scattered cytoplasmic aggregative pattern, and pretreatment with N-acetyl-l-cysteine (NAC), an antioxidant molecule, prevents all type of aggregation. Mutants desD399Y and desR406W had delayed oxidation kinetics following H2O2 stress prevented by NAC pretreatment. Further, we used AAV-injected mouse models to confirm in vivo effects of N-acetyl-l-cysteine. AAV-desD399Y-injected muscles displayed similar physio-pathological characteristics as observed in patients. However, after 2 months of NAC treatment, they did not have reduced aggregates. Finally, in both models, stress induced some post-translational modifications changing Isoelectric Point, such as potential hyperphosphorylations, and/or molecular weight of human desmin by proteolysis. However, each mutant presented its own pattern that seemed to be post-aggregative. In conclusion, our results indicate that individual desmin mutations have unique pathological molecular mechanisms partly linked to alteration of redox homeostasis. Integrating these mutant-specific behaviors will be important when considering future therapeutics.
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Affiliation(s)
- Florence Delort
- Université de Paris, Unité de Biologie Fonctionnelle et Adaptative, CNRS UMR 8251, F-75013, Paris, France
| | - Bertrand-David Segard
- Université de Paris, Unité de Biologie Fonctionnelle et Adaptative, CNRS UMR 8251, F-75013, Paris, France
| | - Coralie Hakibilen
- Université de Paris, Unité de Biologie Fonctionnelle et Adaptative, CNRS UMR 8251, F-75013, Paris, France
| | - Fany Bourgois-Rocha
- Université de Paris, Unité de Biologie Fonctionnelle et Adaptative, CNRS UMR 8251, F-75013, Paris, France
| | - Eva Cabet
- Université de Paris, Unité de Biologie Fonctionnelle et Adaptative, CNRS UMR 8251, F-75013, Paris, France
| | - Patrick Vicart
- Université de Paris, Unité de Biologie Fonctionnelle et Adaptative, CNRS UMR 8251, F-75013, Paris, France
| | - Meng-Er Huang
- Institut Curie, PSL Research University, CNRS UMR3348, Université Paris-Sud, Université Paris-Saclay, Orsay, 91405, France
| | - Guilhem Clary
- Inserm U1016, Institut Cochin, CNRS UMR8104, Université Paris-Descartes, Sorbonne Paris Cité, Plateforme Protéomique 3P5, Paris, France
| | - Alain Lilienbaum
- Université de Paris, Unité de Biologie Fonctionnelle et Adaptative, CNRS UMR 8251, F-75013, Paris, France
| | - Onnik Agbulut
- Sorbonne Université, Institut de Biologie Paris-Seine (IBPS), CNRS UMR 8256, Inserm ERL U1164, Biological Adaptation and Ageing, 75005, Paris, France
| | - Sabrina Batonnet-Pichon
- Université de Paris, Unité de Biologie Fonctionnelle et Adaptative, CNRS UMR 8251, F-75013, Paris, France.
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15
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Brodehl A, Gaertner-Rommel A, Milting H. Molecular insights into cardiomyopathies associated with desmin (DES) mutations. Biophys Rev 2018; 10:983-1006. [PMID: 29926427 DOI: 10.1007/s12551-018-0429-0] [Citation(s) in RCA: 77] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2018] [Accepted: 05/22/2018] [Indexed: 12/15/2022] Open
Abstract
Increasing usage of next-generation sequencing techniques pushed during the last decade cardiogenetic diagnostics leading to the identification of a huge number of genetic variants in about 170 genes associated with cardiomyopathies, channelopathies, or syndromes with cardiac involvement. Because of the biochemical and cellular complexity, it is challenging to understand the clinical meaning or even the relevant pathomechanisms of the majority of genetic sequence variants. However, detailed knowledge about the associated molecular pathomechanism is essential for the development of efficient therapeutic strategies in future and genetic counseling. Mutations in DES, encoding the muscle-specific intermediate filament protein desmin, have been identified in different kinds of cardiac and skeletal myopathies. Here, we review the functions of desmin in health and disease with a focus on cardiomyopathies. In addition, we will summarize the genetic and clinical literature about DES mutations and will explain relevant cell and animal models. Moreover, we discuss upcoming perspectives and consequences of novel experimental approaches like genome editing technology, which might open a novel research field contributing to the development of efficient and mutation-specific treatment options.
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Affiliation(s)
- Andreas Brodehl
- Erich and Hanna Klessmann Institute for Cardiovascular Research & Development, Heart and Diabetes Centre NRW, Ruhr-University Bochum, Georgstrasse 11, 32545, Bad Oeynhausen, Germany.
| | - Anna Gaertner-Rommel
- Erich and Hanna Klessmann Institute for Cardiovascular Research & Development, Heart and Diabetes Centre NRW, Ruhr-University Bochum, Georgstrasse 11, 32545, Bad Oeynhausen, Germany
| | - Hendrik Milting
- Erich and Hanna Klessmann Institute for Cardiovascular Research & Development, Heart and Diabetes Centre NRW, Ruhr-University Bochum, Georgstrasse 11, 32545, Bad Oeynhausen, Germany.
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16
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Charrier EE, Montel L, Asnacios A, Delort F, Vicart P, Gallet F, Batonnet-Pichon S, Hénon S. The desmin network is a determinant of the cytoplasmic stiffness of myoblasts. Biol Cell 2018; 110:77-90. [PMID: 29388701 DOI: 10.1111/boc.201700040] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2017] [Accepted: 01/18/2018] [Indexed: 12/11/2022]
Abstract
BACKGROUND INFORMATION The mechanical properties of cells are essential to maintain their proper functions, and mainly rely on their cytoskeleton. A lot of attention has been paid to actin filaments, demonstrating their central role in the cells mechanical properties, but much less is known about the participation of intermediate filament (IF) networks. Indeed the contribution of IFs, such as vimentin, keratins and lamins, to cell mechanics has only been assessed recently. We study here the involvement of desmin, an IF specifically expressed in muscle cells, in the rheology of immature muscle cells. Desmin can carry mutations responsible for a class of muscle pathologies named desminopathies. RESULTS In this study, using three types of cell rheometers, we assess the consequences of expressing wild-type (WT) or mutated desmin on the rheological properties of single myoblasts. We find that the mechanical properties of the cell cortex are not correlated to the quantity, nor the quality of desmin expressed. On the contrary, the overall cell stiffness increases when the amount of WT or mutated desmin polymerised in cytoplasmic networks increases. However, myoblasts become softer when the desmin network is partially depleted by the formation of aggregates induced by the expression of a desmin mutant. CONCLUSIONS We demonstrate that desmin plays a negligible role in the mechanical properties of the cell cortex but is a determinant of the overall cell stiffness. More particularly, desmin participates to the cytoplasm viscoelasticity. SIGNIFICANCE Desminopathies are associated with muscular weaknesses attributed to a disorganisation of the structure of striated muscle that impairs the active force generation. The present study evidences for the first time the key role of desmin in the rheological properties of myoblasts, raising the hypothesis that desmin mutations could also alter the passive mechanical properties of muscles, thus participating to the lack of force build up in muscle tissue.
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Affiliation(s)
- Elisabeth E Charrier
- Université Paris Diderot, CNRS, Matière et Systèmes Complexes UMR 7057, Paris, F-75013, France.,Université Paris Diderot, CNRS, Unité de Biologie Fonctionnelle et Adaptative, UMR 8251, Paris, F-75013, France.,Institute for Medicine and Engineering, University of Pennsylvania, Philadelphia, PA, USA
| | - Lorraine Montel
- Université Paris Diderot, CNRS, Matière et Systèmes Complexes UMR 7057, Paris, F-75013, France.,Département de Chimie, École Normale Supérieure, PSL Research University, Paris, F-75005, France.,Sorbonne Universités, UPMC, PASTEUR, Paris, F-75005, France.,CNRS, UMR 8640 PASTEUR, Paris, F-75005, France
| | - Atef Asnacios
- Université Paris Diderot, CNRS, Matière et Systèmes Complexes UMR 7057, Paris, F-75013, France
| | - Florence Delort
- Université Paris Diderot, CNRS, Unité de Biologie Fonctionnelle et Adaptative, UMR 8251, Paris, F-75013, France
| | - Patrick Vicart
- Université Paris Diderot, CNRS, Unité de Biologie Fonctionnelle et Adaptative, UMR 8251, Paris, F-75013, France
| | - François Gallet
- Université Paris Diderot, CNRS, Matière et Systèmes Complexes UMR 7057, Paris, F-75013, France
| | - Sabrina Batonnet-Pichon
- Université Paris Diderot, CNRS, Unité de Biologie Fonctionnelle et Adaptative, UMR 8251, Paris, F-75013, France
| | - Sylvie Hénon
- Université Paris Diderot, CNRS, Matière et Systèmes Complexes UMR 7057, Paris, F-75013, France
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17
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A novel dominant D109A CRYAB mutation in a family with myofibrillar myopathy affects αB-crystallin structure. BBA CLINICAL 2016; 7:1-7. [PMID: 27904835 PMCID: PMC5124346 DOI: 10.1016/j.bbacli.2016.11.004] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/08/2016] [Revised: 11/09/2016] [Accepted: 11/10/2016] [Indexed: 11/21/2022]
Abstract
Myofibrillar myopathy (MFM) is a group of inherited muscular disorders characterized by myofibrils dissolution and abnormal accumulation of degradation products. So far causative mutations have been identified in nine genes encoding Z-disk proteins, including αB-crystallin (CRYAB), a small heat shock protein (also called HSPB5). Here, we report a case study of a 63-year-old Polish female with a progressive lower limb weakness and muscle biopsy suggesting a myofibrillar myopathy, and extra-muscular multisystemic involvement, including cataract and cardiomiopathy. Five members of the proband's family presented similar symptoms. Whole exome sequencing followed by bioinformatic analysis revealed a novel D109A mutation in CRYAB associated with the disease. Molecular modeling in accordance with muscle biopsy microscopic analyses predicted that D109A mutation influence both structure and function of CRYAB due to decreased stability of oligomers leading to aggregate formation. In consequence disrupted sarcomere cytoskeleton organization might lead to muscle pathology. We also suggest that mutated RQDE sequence of CRYAB could impair CRYAB chaperone-like activity and promote aggregation of lens crystallins.
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18
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Charrier EE, Asnacios A, Milloud R, De Mets R, Balland M, Delort F, Cardoso O, Vicart P, Batonnet-Pichon S, Hénon S. Desmin Mutation in the C-Terminal Domain Impairs Traction Force Generation in Myoblasts. Biophys J 2016; 110:470-480. [PMID: 26789769 DOI: 10.1016/j.bpj.2015.11.3518] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2015] [Revised: 11/06/2015] [Accepted: 11/23/2015] [Indexed: 02/08/2023] Open
Abstract
The cytoskeleton plays a key role in the ability of cells to both resist mechanical stress and generate force, but the precise involvement of intermediate filaments in these processes remains unclear. We focus here on desmin, a type III intermediate filament, which is specifically expressed in muscle cells and serves as a skeletal muscle differentiation marker. By using several complementary experimental techniques, we have investigated the impact of overexpressing desmin and expressing a mutant desmin on the passive and active mechanical properties of C2C12 myoblasts. We first show that the overexpression of wild-type-desmin increases the overall rigidity of the cells, whereas the expression of a mutated E413K desmin does not. This mutation in the desmin gene is one of those leading to desminopathies, a subgroup of myopathies associated with progressive muscular weakness that are characterized by the presence of desmin aggregates and a disorganization of sarcomeres. We show that the expression of this mutant desmin in C2C12 myoblasts induces desmin network disorganization, desmin aggregate formation, and a small decrease in the number and total length of stress fibers. We finally demonstrate that expression of the E413K mutant desmin also alters the traction forces generation of single myoblasts lacking organized sarcomeres.
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Affiliation(s)
- Elisabeth E Charrier
- Unité de Biologie Fonctionnelle et Adaptative, Université Paris Diderot, Sorbonne Paris Cité, CNRS, UMR 8251, Paris, France; Matière et Systèmes Complexes, Université Paris Diderot, Sorbonne Paris Cité, CNRS, UMR 7057, Paris, France
| | - Atef Asnacios
- Matière et Systèmes Complexes, Université Paris Diderot, Sorbonne Paris Cité, CNRS, UMR 7057, Paris, France
| | - Rachel Milloud
- LIPhy Université Grenoble 1, CNRS, UMR 5588, Grenoble, France
| | - Richard De Mets
- LIPhy Université Grenoble 1, CNRS, UMR 5588, Grenoble, France
| | - Martial Balland
- LIPhy Université Grenoble 1, CNRS, UMR 5588, Grenoble, France
| | - Florence Delort
- Unité de Biologie Fonctionnelle et Adaptative, Université Paris Diderot, Sorbonne Paris Cité, CNRS, UMR 8251, Paris, France
| | - Olivier Cardoso
- Matière et Systèmes Complexes, Université Paris Diderot, Sorbonne Paris Cité, CNRS, UMR 7057, Paris, France
| | - Patrick Vicart
- Unité de Biologie Fonctionnelle et Adaptative, Université Paris Diderot, Sorbonne Paris Cité, CNRS, UMR 8251, Paris, France
| | - Sabrina Batonnet-Pichon
- Unité de Biologie Fonctionnelle et Adaptative, Université Paris Diderot, Sorbonne Paris Cité, CNRS, UMR 8251, Paris, France
| | - Sylvie Hénon
- Matière et Systèmes Complexes, Université Paris Diderot, Sorbonne Paris Cité, CNRS, UMR 7057, Paris, France.
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19
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Ploski R, Rydzanicz M, Ksiazczyk TM, Franaszczyk M, Pollak A, Kosinska J, Michalak E, Stawinski P, Ziolkowska L, Bilinska ZT, Werner B. Evidence for troponin C (TNNC1) as a gene for autosomal recessive restrictive cardiomyopathy with fatal outcome in infancy. Am J Med Genet A 2016; 170:3241-3248. [DOI: 10.1002/ajmg.a.37860] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2016] [Accepted: 07/07/2016] [Indexed: 11/12/2022]
Affiliation(s)
- Rafal Ploski
- Department of Medical Genetics; Centre of Biostructure; Medical University of Warsaw; Warsaw Poland
| | - Malgorzata Rydzanicz
- Department of Medical Genetics; Centre of Biostructure; Medical University of Warsaw; Warsaw Poland
| | - Tomasz M. Ksiazczyk
- Department of Pediatric Cardiology and General Pediatrics; Medical University of Warsaw; Warsaw Poland
| | - Maria Franaszczyk
- Laboratory of Molecular Biology; Institute of Cardiology; Warsaw Poland
| | - Agnieszka Pollak
- Department of Genetics; Institute of Physiology and Pathology of Hearing; Warsaw Poland
| | - Joanna Kosinska
- Department of Medical Genetics; Centre of Biostructure; Medical University of Warsaw; Warsaw Poland
| | - Ewa Michalak
- Unit for Screening Studies in Inherited Cardiovascular Diseases; Institute of Cardiology; Warsaw Poland
| | - Piotr Stawinski
- Department of Genetics; Institute of Physiology and Pathology of Hearing; Warsaw Poland
| | - Lidia Ziolkowska
- Department of Pediatric Cardiology; Children's Memorial Health Institute; Warsaw Poland
| | - Zofia T. Bilinska
- Unit for Screening Studies in Inherited Cardiovascular Diseases; Institute of Cardiology; Warsaw Poland
| | - Bozena Werner
- Department of Pediatric Cardiology and General Pediatrics; Medical University of Warsaw; Warsaw Poland
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20
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Boczek NJ, Sigafoos AN, Zimmermann MT, Maus RL, Cousin MA, Blackburn PR, Urrutia R, Clark KJ, Patterson MC, Wick MJ, Klee EW. Functional characterization of a GFAP variant of uncertain significance in an Alexander disease case within the setting of an individualized medicine clinic. Clin Case Rep 2016; 4:885-95. [PMID: 27648269 PMCID: PMC5018595 DOI: 10.1002/ccr3.655] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2016] [Revised: 06/27/2016] [Accepted: 07/12/2016] [Indexed: 01/10/2023] Open
Abstract
A de novo GFAP variant, p.R376W, was identified in a child presenting with hypotonia, developmental delay, and abnormal brain MRI. Following the 2015 ACMG variant classification guidelines and the functional studies showing protein aggregate formation in vitro, p.R376W should be classified as a pathogenic variant, causative for Alexander disease.
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Affiliation(s)
- Nicole J. Boczek
- Center for Individualized MedicineMayo ClinicRochesterMinnesotaUSA
| | - Ashley N. Sigafoos
- Center for Individualized MedicineMayo ClinicRochesterMinnesotaUSA
- Department of Biochemistry and Molecular BiologyMayo ClinicRochesterMinnesotaUSA
| | | | - Rachel L. Maus
- Mayo Graduate School and the Department of ImmunologyMayo ClinicRochesterMinnesotaUSA
| | - Margot A. Cousin
- Center for Individualized MedicineMayo ClinicRochesterMinnesotaUSA
| | | | - Raul Urrutia
- Department of Biochemistry and Molecular BiologyMayo ClinicRochesterMinnesotaUSA
- Department of Biophysics and MedicineMayo ClinicRochesterMinnesotaUSA
| | - Karl J. Clark
- Center for Individualized MedicineMayo ClinicRochesterMinnesotaUSA
- Department of Biochemistry and Molecular BiologyMayo ClinicRochesterMinnesotaUSA
| | - Marc C. Patterson
- Department of Clinical GenomicsMayo ClinicRochesterMinnesotaUSA
- Departments of Neurology and PediatricsMayo ClinicRochesterMinnesotaUSA
| | - Myra J. Wick
- Department of Clinical GenomicsMayo ClinicRochesterMinnesotaUSA
- Department of Obstetrics and GynecologyMayo ClinicRochesterMinnesotaUSA
| | - Eric W. Klee
- Center for Individualized MedicineMayo ClinicRochesterMinnesotaUSA
- Department of Biomedical InformaticsMayo ClinicRochesterMinnesotaUSA
- Department of Clinical GenomicsMayo ClinicRochesterMinnesotaUSA
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21
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Brodehl A, Ferrier RA, Hamilton SJ, Greenway SC, Brundler MA, Yu W, Gibson WT, McKinnon ML, McGillivray B, Alvarez N, Giuffre M, Schwartzentruber J, Gerull B. Mutations inFLNCare Associated with Familial Restrictive Cardiomyopathy. Hum Mutat 2016; 37:269-79. [DOI: 10.1002/humu.22942] [Citation(s) in RCA: 112] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2015] [Accepted: 11/23/2015] [Indexed: 01/22/2023]
Affiliation(s)
- Andreas Brodehl
- Department of Cardiac Sciences; Libin Cardiovascular Institute of Alberta; University of Calgary; Calgary Alberta Canada
| | - Raechel A. Ferrier
- Department of Medical Genetics; University of Calgary and Alberta Health Services; Calgary Alberta Canada
| | - Sara J. Hamilton
- Department of Medical Genetics; University of British Columbia; Vancouver British Columbia Canada
| | - Steven C. Greenway
- Department of Cardiac Sciences; Libin Cardiovascular Institute of Alberta; University of Calgary; Calgary Alberta Canada
- Department of Paediatrics; Alberta Children's Hospital Research Institute; University of Calgary; Calgary Alberta Canada
| | - Marie-Anne Brundler
- Department of Paediatrics; Alberta Children's Hospital Research Institute; University of Calgary; Calgary Alberta Canada
- Departments of Pathology and Laboratory Medicine; University of Calgary; Calgary Alberta Canada
| | - Weiming Yu
- Departments of Pathology and Laboratory Medicine; University of Calgary; Calgary Alberta Canada
| | - William T. Gibson
- Department of Medical Genetics; University of British Columbia; Vancouver British Columbia Canada
- Child and Family Research Institute; Vancouver British Columbia Canada
| | - Margaret L. McKinnon
- Department of Medical Genetics; University of British Columbia; Vancouver British Columbia Canada
| | - Barbara McGillivray
- Department of Medical Genetics; University of British Columbia; Vancouver British Columbia Canada
| | - Nanette Alvarez
- Department of Cardiac Sciences; Libin Cardiovascular Institute of Alberta; University of Calgary; Calgary Alberta Canada
| | - Michael Giuffre
- Department of Cardiac Sciences; Libin Cardiovascular Institute of Alberta; University of Calgary; Calgary Alberta Canada
| | | | - Brenda Gerull
- Department of Cardiac Sciences; Libin Cardiovascular Institute of Alberta; University of Calgary; Calgary Alberta Canada
- Department of Medical Genetics; University of Calgary and Alberta Health Services; Calgary Alberta Canada
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Abstract
There has been a progressive evolution in systems of classification for cardiomyopathy, driven by advances in imaging modalities, disease recognition, and genetics, following initial clinical descriptions in the 1960s. A pathophysiological classification emerged and was endorsed by World Health Organisation Task Forces in 1980 and 1995: dilated, hypertrophic, restrictive, and arrhythmogenic right ventricular cardiomyopathies; subdivided into idiopathic and disease-specific cardiomyopathies. Genetic advances have increasingly linked "idiopathic" phenotypes to specific mutations, although most linkages exhibit highly variable or little genotype-phenotype correlation, confounded by age-dependent changes and varying penetrance. The following two dominant classification systems are currently in use, with advocates in both continents. First, American Heart Association (2006): "A heterogeneous group of diseases of the myocardium associated with mechanical and/or electrical dysfunction that usually exhibit inappropriate ventricular hypertrophy or dilatation due to a variety of causes that frequently are genetic". These are subdivided to those predominantly involving the heart - primary - due to genetic mutation, including ion channelopathies, acquired disease, or mixed; and those with systemic involvement in other organ systems - secondary. Second, European Society of Cardiology (2008): "A myocardial disorder in which heart muscle is structurally and functionally abnormal… sufficient to cause the observed myocardial abnormality", with subdivision to familial and non-familial, excluding ion channelopathies, and split to specific disease subtypes and idiopathic. Further differences exist in the definitions for hypertrophic cardiomyopathy; however, whichever high-level classification is used, the clinical reality remains phenotype driven. Clinical evaluation and diagnostic imaging dominate initial patient contact, revealing diagnostic red flags that determine further specific tests. Genetic testing is undertaken early. A recent attempt to harmonise these competing systems named the MOGE(S) system, based on descriptive logical nosology, currently remains unproven as a fully practical solution.
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23
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Wu W, Lu CX, Wang YN, Liu F, Chen W, Liu YT, Han YC, Cao J, Zhang SY, Zhang X. Novel Phenotype-Genotype Correlations of Restrictive Cardiomyopathy With Myosin-Binding Protein C (MYBPC3) Gene Mutations Tested by Next-Generation Sequencing. J Am Heart Assoc 2015; 4:JAHA.115.001879. [PMID: 26163040 PMCID: PMC4608072 DOI: 10.1161/jaha.115.001879] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
BACKGROUND MYBPC3 dysfunctions have been proven to induce dilated cardiomyopathy, hypertrophic cardiomyopathy, and/or left ventricular noncompaction; however, the genotype-phenotype correlation between MYBPC3 and restrictive cardiomyopathy (RCM) has not been established. The newly developed next-generation sequencing method is capable of broad genomic DNA sequencing with high throughput and can help explore novel correlations between genetic variants and cardiomyopathies. METHODS AND RESULTS A proband from a multigenerational family with 3 live patients and 1 unrelated patient with clinical diagnoses of RCM underwent a next-generation sequencing workflow based on a custom AmpliSeq panel, including 64 candidate pathogenic genes for cardiomyopathies, on the Ion Personal Genome Machine high-throughput sequencing benchtop instrument. The selected panel contained a total of 64 genes that were reportedly associated with inherited cardiomyopathies. All patients fulfilled strict criteria for RCM with clinical characteristics, echocardiography, and/or cardiac magnetic resonance findings. The multigenerational family with 3 adult RCM patients carried an identical nonsense MYBPC3 mutation, and the unrelated patient carried a missense mutation in the MYBPC3 gene. All of these results were confirmed by the Sanger sequencing method. CONCLUSIONS This study demonstrated that MYBPC3 gene mutations, revealed by next-generation sequencing, were associated with familial and sporadic RCM patients. It is suggested that the next-generation sequencing platform with a selected panel provides a highly efficient approach for molecular diagnosis of hereditary and idiopathic RCM and helps build new genotype-phenotype correlations.
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MESH Headings
- Adult
- Aged
- Cardiomyopathy, Restrictive/diagnosis
- Cardiomyopathy, Restrictive/genetics
- Cardiomyopathy, Restrictive/mortality
- Cardiomyopathy, Restrictive/physiopathology
- Carrier Proteins/genetics
- Codon, Nonsense
- DNA Mutational Analysis/methods
- Echocardiography, Doppler, Color
- Echocardiography, Transesophageal
- Electrocardiography
- Female
- Genetic Association Studies
- Genetic Predisposition to Disease
- Genetic Testing/methods
- High-Throughput Nucleotide Sequencing/methods
- Humans
- Magnetic Resonance Imaging
- Male
- Middle Aged
- Mutation, Missense
- Pedigree
- Phenotype
- Predictive Value of Tests
- Prognosis
- Ventricular Dysfunction, Left/diagnosis
- Ventricular Dysfunction, Left/genetics
- Ventricular Dysfunction, Left/mortality
- Ventricular Dysfunction, Left/physiopathology
- Ventricular Function, Left/genetics
- Workflow
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Affiliation(s)
- Wei Wu
- Department of Cardiology, Peking Union Medical College Hospital, Chinese Academy of Medical Science & Peking Union Medical CollegeBeijing, China
| | - Chao-Xia Lu
- McKusick-Zhang Center for Genetic Medicine, Institute of Basic Medical Sciences, Chinese Academy of Medical Science & Peking Union Medical CollegeBeijing, China
| | - Yi-Ning Wang
- Department of Radiology, Peking Union Medical College Hospital, Chinese Academy of Medical Science & Peking Union Medical CollegeBeijing, China
| | - Fang Liu
- McKusick-Zhang Center for Genetic Medicine, Institute of Basic Medical Sciences, Chinese Academy of Medical Science & Peking Union Medical CollegeBeijing, China
| | - Wei Chen
- Department of Cardiology, Peking Union Medical College Hospital, Chinese Academy of Medical Science & Peking Union Medical CollegeBeijing, China
| | - Yong-Tai Liu
- Department of Cardiology, Peking Union Medical College Hospital, Chinese Academy of Medical Science & Peking Union Medical CollegeBeijing, China
| | - Ye-Chen Han
- Department of Cardiology, Peking Union Medical College Hospital, Chinese Academy of Medical Science & Peking Union Medical CollegeBeijing, China
| | - Jian Cao
- Department of Radiology, Peking Union Medical College Hospital, Chinese Academy of Medical Science & Peking Union Medical CollegeBeijing, China
| | - Shu-Yang Zhang
- Department of Cardiology, Peking Union Medical College Hospital, Chinese Academy of Medical Science & Peking Union Medical CollegeBeijing, China
- Correspondence to: Shu-Yang Zhang, MD, Department of Cardiology, Peking Union Medical College Hospital, Peking Union Medical College & Chinese Academy of Medical Science, No. 1 Shuai Fu Yuan, Beijing 100730, China. E-mail:
| | - Xue Zhang
- McKusick-Zhang Center for Genetic Medicine, Institute of Basic Medical Sciences, Chinese Academy of Medical Science & Peking Union Medical CollegeBeijing, China
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24
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Fichna JP, Karolczak J, Potulska-Chromik A, Miszta P, Berdynski M, Sikorska A, Filipek S, Redowicz MJ, Kaminska A, Zekanowski C. Two desmin gene mutations associated with myofibrillar myopathies in Polish families. PLoS One 2014; 9:e115470. [PMID: 25541946 PMCID: PMC4277352 DOI: 10.1371/journal.pone.0115470] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2014] [Accepted: 11/24/2014] [Indexed: 11/29/2022] Open
Abstract
Desmin is a muscle-specific intermediate filament protein which forms a network connecting the sarcomere, T tubules, sarcolemma, nuclear membrane, mitochondria and other organelles. Mutations in the gene coding for desmin (DES) cause skeletal myopathies often combined with cardiomyopathy, or isolated cardiomyopathies. The molecular pathomechanisms of the disease remain ambiguous. Here, we describe and comprehensively characterize two DES mutations found in Polish patients with a clinical diagnosis of desminopathy. The study group comprised 16 individuals representing three families. Two mutations were identified: a novel missense mutation (Q348P) and a small deletion of nine nucleotides (A357_E359del), previously described by us in the Polish population. A common ancestry of all the families bearing the A357_E359del mutation was confirmed. Both mutations were predicted to be pathogenic using a bioinformatics approach, including molecular dynamics simulations which helped to rationalize abnormal behavior at molecular level. To test the impact of the mutations on DES expression and the intracellular distribution of desmin muscle biopsies were investigated. Elevated desmin levels as well as its atypical localization in muscle fibers were observed. Additional staining for M-cadherin, α-actinin, and myosin heavy chains confirmed severe disruption of myofibrill organization. The abnormalities were more prominent in the Q348P muscle, where both small atrophic fibers as well large fibers with centrally localized nuclei were observed. We propose that the mutations affect desmin structure and cause its aberrant folding and subsequent aggregation, triggering disruption of myofibrils organization.
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MESH Headings
- Adult
- DNA Mutational Analysis
- Desmin/chemistry
- Desmin/genetics
- Female
- Genetic Association Studies
- Humans
- Male
- Middle Aged
- Molecular Dynamics Simulation
- Muscle Fibers, Skeletal/chemistry
- Muscle Fibers, Skeletal/metabolism
- Muscle Fibers, Skeletal/pathology
- Mutation, Missense
- Myopathies, Structural, Congenital/genetics
- Myopathies, Structural, Congenital/metabolism
- Myopathies, Structural, Congenital/pathology
- Pedigree
- Poland
- Sequence Deletion
- Young Adult
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Affiliation(s)
- Jakub Piotr Fichna
- Department of Neurodegenerative Disorders, Mossakowski Medical Research Centre, Polish Academy of Sciences, Warszawa, Poland
| | - Justyna Karolczak
- Department of Biochemistry, Nencki Institute of Experimental Biology, Polish Academy of Sciences, Warszawa, Poland
| | | | - Przemyslaw Miszta
- Faculty of Chemistry and Biological and Chemical Research Centre, University of Warsaw, Warszawa, Poland
| | - Mariusz Berdynski
- Department of Neurodegenerative Disorders, Mossakowski Medical Research Centre, Polish Academy of Sciences, Warszawa, Poland
| | - Agata Sikorska
- Department of Biochemistry, Nencki Institute of Experimental Biology, Polish Academy of Sciences, Warszawa, Poland
| | - Slawomir Filipek
- Faculty of Chemistry and Biological and Chemical Research Centre, University of Warsaw, Warszawa, Poland
| | - Maria Jolanta Redowicz
- Department of Biochemistry, Nencki Institute of Experimental Biology, Polish Academy of Sciences, Warszawa, Poland
| | - Anna Kaminska
- Department of Neurology, Medical University of Warsaw, Warszawa, Poland
- Neuromuscular Unit, Mossakowski Medical Research Centre, Polish Academy of Sciences, Warszawa, Poland
| | - Cezary Zekanowski
- Department of Neurodegenerative Disorders, Mossakowski Medical Research Centre, Polish Academy of Sciences, Warszawa, Poland
- * E-mail:
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25
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Semmler AL, Sacconi S, Bach JE, Liebe C, Bürmann J, Kley RA, Ferbert A, Anderheiden R, Van den Bergh P, Martin JJ, De Jonghe P, Neuen-Jacob E, Müller O, Deschauer M, Bergmann M, Schröder JM, Vorgerd M, Schulz JB, Weis J, Kress W, Claeys KG. Unusual multisystemic involvement and a novel BAG3 mutation revealed by NGS screening in a large cohort of myofibrillar myopathies. Orphanet J Rare Dis 2014; 9:121. [PMID: 25208129 PMCID: PMC4347565 DOI: 10.1186/s13023-014-0121-9] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2014] [Accepted: 07/21/2014] [Indexed: 12/14/2022] Open
Abstract
Background Myofibrillar myopathies (MFM) are a group of phenotypically and genetically heterogeneous neuromuscular disorders, which are characterized by protein aggregations in muscle fibres and can be associated with multisystemic involvement. Methods We screened a large cohort of 38 index patients with MFM for mutations in the nine thus far known causative genes using Sanger and next generation sequencing (NGS). We studied the clinical and histopathological characteristics in 38 index patients and five additional relatives (n = 43) and particularly focused on the associated multisystemic symptoms. Results We identified 14 heterozygous mutations (diagnostic yield of 37%), among them the novel p.Pro209Gln mutation in the BAG3 gene, which was associated with onset in adulthood, a mild phenotype and an axonal sensorimotor polyneuropathy, in the absence of giant axons at the nerve biopsy. We revealed several novel clinical phenotypes and unusual multisystemic presentations with previously described mutations: hearing impairment with a FLNC mutation, dysphonia with a mutation in DES and the first patient with a FLNC mutation presenting respiratory insufficiency as the initial symptom. Moreover, we described for the first time respiratory insufficiency occurring in a patient with the p.Gly154Ser mutation in CRYAB. Interestingly, we detected a polyneuropathy in 28% of the MFM patients, including a BAG3 and a MYOT case, and hearing impairment in 13%, including one patient with a FLNC mutation and two with mutations in the DES gene. In four index patients with a mutation in one of the MFM genes, typical histological findings were only identified at the ultrastructural level (29%). Conclusions We conclude that extraskeletal symptoms frequently occur in MFM, particularly cardiac and respiratory involvement, polyneuropathy and/or deafness. BAG3 mutations should be considered even in cases with a mild phenotype or an adult onset. We identified a genetic defect in one of the known genes in less than half of the MFM patients, indicating that more causative genes are still to be found. Next generation sequencing techniques should be helpful in achieving this aim.
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Affiliation(s)
- Anna-Lena Semmler
- Department of Neurology, RWTH Aachen University, Aachen, Germany. .,Institute of Neuropathology, RWTH Aachen University, Aachen, Germany.
| | - Sabrina Sacconi
- Centre de Référence des Maladies Neuromusculaires, Nice Hospital and UMR CNRS6543, Nice University, Nice, France.
| | - J Elisa Bach
- Department of Human Genetics, University of Würzburg, Würzburg, Germany.
| | - Claus Liebe
- Department of Neurology, RWTH Aachen University, Aachen, Germany. .,Institute of Neuropathology, RWTH Aachen University, Aachen, Germany.
| | - Jan Bürmann
- Department of Neurology, Saarland University, Homburg/Saar, Germany.
| | - Rudolf A Kley
- Department of Neurology, Neuromuscular Center Ruhrgebiet, University Hospital Bergmannsheil, Ruhr-University Bochum, Bochum, Germany.
| | | | | | - Peter Van den Bergh
- Department of Neurology, Neuromuscular Reference Center, University Hospital Saint-Luc, Brussel, Belgium.
| | | | - Peter De Jonghe
- Institute Born-Bunge, University of Antwerpen, Antwerpen, Belgium. .,Neurogenetics Group, VIB-Department of Molecular Genetics, University of Antwerpen, Antwerpen, Belgium. .,Department of Neurology, University Hospital of Antwerpen, Antwerpen, Belgium.
| | - Eva Neuen-Jacob
- Institute of Neuropathology, Heinrich-Heine-University Düsseldorf, Düsseldorf, Germany.
| | - Oliver Müller
- Department of Cardiology, Angiology and Pneumology, University Hospital Heidelberg, Heidelberg, Germany. .,DZHK (German Centre for Cardiovascular Research), partner site Heidelberg, Heidelberg, Germany.
| | - Marcus Deschauer
- Department of Neurology, Martin-Luther-University Halle-Wittenberg, Halle, Germany.
| | - Markus Bergmann
- Institute of Neuropathology, Klinikum Bremen-Mitte, Bremen, Germany.
| | | | - Matthias Vorgerd
- Department of Neurology, Neuromuscular Center Ruhrgebiet, University Hospital Bergmannsheil, Ruhr-University Bochum, Bochum, Germany.
| | - Jörg B Schulz
- Department of Neurology, RWTH Aachen University, Aachen, Germany. .,JARA - Translational Brain Medicine, Jülich and Aachen, Germany.
| | - Joachim Weis
- Institute of Neuropathology, RWTH Aachen University, Aachen, Germany. .,JARA - Translational Brain Medicine, Jülich and Aachen, Germany.
| | - Wolfram Kress
- Department of Human Genetics, University of Würzburg, Würzburg, Germany.
| | - Kristl G Claeys
- Department of Neurology, RWTH Aachen University, Aachen, Germany. .,Institute of Neuropathology, RWTH Aachen University, Aachen, Germany. .,JARA - Translational Brain Medicine, Jülich and Aachen, Germany.
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26
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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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27
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Desminopathies: pathology and mechanisms. Acta Neuropathol 2013; 125:47-75. [PMID: 23143191 PMCID: PMC3535371 DOI: 10.1007/s00401-012-1057-6] [Citation(s) in RCA: 130] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2012] [Revised: 10/15/2012] [Accepted: 10/18/2012] [Indexed: 12/22/2022]
Abstract
The intermediate filament protein desmin is an essential component of the extra-sarcomeric cytoskeleton in muscle cells. This three-dimensional filamentous framework exerts central roles in the structural and functional alignment and anchorage of myofibrils, the positioning of cell organelles and signaling events. Mutations of the human desmin gene on chromosome 2q35 cause autosomal dominant, autosomal recessive, and sporadic myopathies and/or cardiomyopathies with marked phenotypic variability. The disease onset ranges from childhood to late adulthood. The clinical course is progressive and no specific treatment is currently available for this severely disabling disease. The muscle pathology is characterized by desmin-positive protein aggregates and degenerative changes of the myofibrillar apparatus. The molecular pathophysiology of desminopathies is a complex, multilevel issue. In addition to direct effects on the formation and maintenance of the extra-sarcomeric intermediate filament network, mutant desmin affects essential protein interactions, cell signaling cascades, mitochondrial functions, and protein quality control mechanisms. This review summarizes the currently available data on the epidemiology, clinical phenotypes, myopathology, and genetics of desminopathies. In addition, this work provides an overview on the expression, filament formation processes, biomechanical properties, post-translational modifications, interaction partners, subcellular localization, and functions of wild-type and mutant desmin as well as desmin-related cell and animal models.
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28
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Houser SR, Margulies KB, Murphy AM, Spinale FG, Francis GS, Prabhu SD, Rockman HA, Kass DA, Molkentin JD, Sussman MA, Koch WJ. Animal models of heart failure: a scientific statement from the American Heart Association. Circ Res 2012; 111:131-50. [PMID: 22595296 DOI: 10.1161/res.0b013e3182582523] [Citation(s) in RCA: 324] [Impact Index Per Article: 27.0] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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29
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High cardiovascular morbidity and mortality in myofibrillar myopathies due to DES gene mutations: a 10-year longitudinal study. Neuromuscul Disord 2012; 22:211-8. [DOI: 10.1016/j.nmd.2011.10.019] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2011] [Revised: 09/29/2011] [Accepted: 10/26/2011] [Indexed: 11/21/2022]
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30
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Walsh MA, Grenier MA, Jefferies JL, Towbin JA, Lorts A, Czosek RJ. Conduction abnormalities in pediatric patients with restrictive cardiomyopathy. Circ Heart Fail 2012; 5:267-73. [PMID: 22260945 DOI: 10.1161/circheartfailure.111.964395] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
BACKGROUND Pediatric restrictive cardiomyopathy carries a poor prognosis secondary to a high risk of sudden death previously attributed to ventricular tachyarrhythmias. The extent of conduction abnormalities in this population and their relationship to life-threatening events has not been previously reported. METHODS AND RESULTS A retrospective study of pediatric patients with restrictive cardiomyopathy diagnosed between April 1994 and May 2011 was performed. Demographic, cardiac, and ECG characteristics and the mechanisms of serious arrhythmic events (death or episode of acute hemodynamic compromise thought to be secondary to arrhythmia) were evaluated. Sixteen patients (1-17 years of age) were reviewed, with 5 sudden cardiac events noted, including 4 deaths. Two deaths were caused by development of acute heart block; another patient with syncope had intermittent heart block and survived as the result of pacing features of an implanted defibrillator system. The median PR interval (222 versus 144 ms; P<0.01) and the QRS duration (111 versus 74; P=0.01) were significantly longer in those who had an acute cardiac event. Older age at presentation was associated with sudden cardiac events (P<0.01). No other functional or echocardiographic variables were associated with a sudden cardiac event. CONCLUSIONS Pediatric patients with restrictive cardiomyopathy are at risk for acute high-grade heart block, and, in this cohort, bradycardic events represented a significant portion of all arrhythmic events. Aggressive ECG monitoring strategies looking for conduction system disease should be ongoing in all patients with restrictive cardiomyopathy. Implantation of a defibrillator/pacemaker should be considered as prophylactic management.
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Affiliation(s)
- Mark A Walsh
- Heart Institute, Division of Pediatric Cardiology, Cincinnati Children's Hospital; Medical Center, Cincinnati, OH 45229, USA
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31
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The sarcomeric Z-disc and Z-discopathies. J Biomed Biotechnol 2011; 2011:569628. [PMID: 22028589 PMCID: PMC3199094 DOI: 10.1155/2011/569628] [Citation(s) in RCA: 89] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2011] [Accepted: 08/12/2011] [Indexed: 02/06/2023] Open
Abstract
The sarcomeric Z-disc defines the lateral borders of the sarcomere and has primarily been seen as a structure important for mechanical stability. This view has changed dramatically within the last one or two decades. A multitude of novel Z-disc proteins and their interacting partners have been identified, which has led to the identification of additional functions and which have now been assigned to this structure. This includes its importance for intracellular signalling, for mechanosensation and mechanotransduction in particular, an emerging importance for protein turnover and autophagy, as well as its molecular links to the t-tubular system and the sarcoplasmic reticulum. Moreover, the discovery of mutations in a wide variety of Z-disc proteins, which lead to perturbations of several of the above-mentioned systems, gives rise to a diverse group of diseases which can be termed Z-discopathies. This paper provides a brief overview of these novel aspects as well as points to future research directions.
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32
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Hong D, Wang Z, Zhang W, Xi J, Lu J, Luan X, Yuan Y. A series of Chinese patients with desminopathy associated with six novel and one reported mutations in the desmin gene. Neuropathol Appl Neurobiol 2011; 37:257-70. [DOI: 10.1111/j.1365-2990.2010.01112.x] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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33
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van Spaendonck-Zwarts KY, van Hessem L, Jongbloed JDH, de Walle HEK, Capetanaki Y, van der Kooi AJ, van Langen IM, van den Berg MP, van Tintelen JP. Desmin-related myopathy. Clin Genet 2010; 80:354-66. [PMID: 20718792 DOI: 10.1111/j.1399-0004.2010.01512.x] [Citation(s) in RCA: 129] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Desmin-related myopathy (DRM) is an autosomally inherited skeletal and cardiac myopathy, mainly caused by dominant mutations in the desmin gene (DES). We provide (i) a literature review on DRM, including clinical manifestations, inheritance, molecular genetics, myopathology and management and (ii) a meta-analysis of reported DES mutation carriers, focusing on their clinical characteristics and potential genotype-phenotype correlations. Meta-analysis: DES mutation carriers (n = 159) with 40 different mutations were included. Neurological signs were present in 74% and cardiological signs in 74% of carriers (both neurological and cardiological signs in 49%, isolated neurological signs in 22%, and isolated cardiological signs in 22%). More than 70% of carriers exhibited myopathy or muscular weakness, with normal creatine kinase levels present in one third of them. Up to 50% of carriers had cardiomyopathy and around 60% had cardiac conduction disease or arrhythmias, with atrioventricular block as an important hallmark. Symptoms generally started during the 30s; a quarter of carriers died at a mean age of 49 years. Sudden cardiac death occurred in two patients with a pacemaker, suggesting a ventricular tachyarrhythmia as cause of death. The majority of DES mutations were missense mutations, mostly located in the 2B domain. Mutations in the 2B domain were predominant in patients with an isolated neurological phenotype, whereas head and tail domain mutations were predominant in patients with an isolated cardiological phenotype.
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Affiliation(s)
- K Y van Spaendonck-Zwarts
- Department of Genetics, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands.
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34
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Divergent Molecular Effects of Desmin Mutations on Protein Assembly in Myofibrillar Myopathy. J Neuropathol Exp Neurol 2010; 69:415-24. [DOI: 10.1097/nen.0b013e3181d71305] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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35
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Desmin myopathy with severe cardiomyopathy in a Uruguayan family due to a codon deletion in a new location within the desmin 1A rod domain. Neuromuscul Disord 2010; 20:178-87. [DOI: 10.1016/j.nmd.2010.01.001] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2009] [Revised: 12/17/2009] [Accepted: 01/05/2010] [Indexed: 11/17/2022]
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36
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Disease mutations in the “head” domain of the extra-sarcomeric protein desmin distinctly alter its assembly and network-forming properties. J Mol Med (Berl) 2009; 87:1207-19. [DOI: 10.1007/s00109-009-0521-9] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2009] [Revised: 08/08/2009] [Accepted: 08/11/2009] [Indexed: 10/20/2022]
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37
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Goldfarb LG, Dalakas MC. Tragedy in a heartbeat: malfunctioning desmin causes skeletal and cardiac muscle disease. J Clin Invest 2009; 119:1806-13. [PMID: 19587455 PMCID: PMC2701871 DOI: 10.1172/jci38027] [Citation(s) in RCA: 160] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Muscle fiber deterioration resulting in progressive skeletal muscle weakness, heart failure, and respiratory distress occurs in more than 20 inherited myopathies. As discussed in this Review, one of the newly identified myopathies is desminopathy, a disease caused by dysfunctional mutations in desmin, a type III intermediate filament protein, or alphaB-crystallin, a chaperone for desmin. The range of clinical manifestations in patients with desminopathy is wide and may overlap with those observed in individuals with other myopathies. Awareness of this disease needs to be heightened, diagnostic criteria reliably outlined, and molecular testing readily available; this would ensure prevention of sudden death from cardiac arrhythmias and other complications.
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Affiliation(s)
- Lev G. Goldfarb
- National Institute of Neurological Disorders and Stroke, NIH, Bethesda, Maryland, USA.
Imperial College London, Hammersmith Hospital Campus, London, United Kingdom
| | - Marinos C. Dalakas
- National Institute of Neurological Disorders and Stroke, NIH, Bethesda, Maryland, USA.
Imperial College London, Hammersmith Hospital Campus, London, United Kingdom
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38
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Pioglitazone-induced heart failure in a patient with restrictive cardiomyopathy and metabolic myopathy. Clin Res Cardiol 2009; 98:271-4. [DOI: 10.1007/s00392-009-0757-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/22/2008] [Accepted: 01/08/2009] [Indexed: 10/21/2022]
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39
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Grasso M, Pilotto A, Marziliano N, Pasotti M, Arbustini E. Letter by Maurizia Grasso et al. regarding article, “Restrictive cardiomyopathy with atrioventricular conduction block resulting from a desmin mutation”. Int J Cardiol 2008; 131:144-5; author reply 146-7. [PMID: 17804094 DOI: 10.1016/j.ijcard.2007.06.119] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/12/2007] [Accepted: 06/23/2007] [Indexed: 11/19/2022]
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40
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Kostera-Pruszczyk A, Pruszczyk P, Kamińska A, Lee HS, Goldfarb LG. Diversity of cardiomyopathy phenotypes caused by mutations in desmin. Int J Cardiol 2008. [DOI: 10.1016/j.ijcard.2007.08.095] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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41
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Davis J, Westfall MV, Townsend D, Blankinship M, Herron TJ, Guerrero-Serna G, Wang W, Devaney E, Metzger JM. Designing heart performance by gene transfer. Physiol Rev 2008; 88:1567-651. [PMID: 18923190 DOI: 10.1152/physrev.00039.2007] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
The birth of molecular cardiology can be traced to the development and implementation of high-fidelity genetic approaches for manipulating the heart. Recombinant viral vector-based technology offers a highly effective approach to genetically engineer cardiac muscle in vitro and in vivo. This review highlights discoveries made in cardiac muscle physiology through the use of targeted viral-mediated genetic modification. Here the history of cardiac gene transfer technology and the strengths and limitations of viral and nonviral vectors for gene delivery are reviewed. A comprehensive account is given of the application of gene transfer technology for studying key cardiac muscle targets including Ca(2+) handling, the sarcomere, the cytoskeleton, and signaling molecules and their posttranslational modifications. The primary objective of this review is to provide a thorough analysis of gene transfer studies for understanding cardiac physiology in health and disease. By comparing results obtained from gene transfer with those obtained from transgenesis and biophysical and biochemical methodologies, this review provides a global view of cardiac structure-function with an eye towards future areas of research. The data presented here serve as a basis for discovery of new therapeutic targets for remediation of acquired and inherited cardiac diseases.
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Affiliation(s)
- Jennifer Davis
- Department of Integrative Biology and Physiology, University of Minnesota Medical School, Minneapolis, Minnesota 55455, USA
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42
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Karam S, Raboisson MJ, Ducreux C, Chalabreysse L, Millat G, Bozio A, Bouvagnet P. A de novo mutation of the beta cardiac myosin heavy chain gene in an infantile restrictive cardiomyopathy. CONGENIT HEART DIS 2008; 3:138-43. [PMID: 18380764 DOI: 10.1111/j.1747-0803.2008.00165.x] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Here we report the first pediatric case of restrictive cardiomyopathy secondary to a de novo mutation in the cardiac myosin heavy chain gene MYH7. The clinical course is characterized by an early onset of disease, mild hypertrophy of the left ventricle and a very short evolution to death. Because of the location of the mutation in the hinge region between the rod part and the globular head of the myosin molecule, it is possible that restrictive cardiomyopathy resulted from an impairment of flexion/extension of myosin heads during the contraction/relaxation cycle.
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Affiliation(s)
- Simon Karam
- Department of Pediatric Cardiology, Groupe Hospitalier Est, Hospices Civils de Lyon, Lyon, France
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43
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Pankuweit S, Richter A, Ruppert V, Funck R, Maisch B. Klassifikation, genetische Prädisposition und Risikofaktoren für die Entwicklung einer Kardiomyopathie. Internist (Berl) 2008; 49:441-2, 444-7. [DOI: 10.1007/s00108-008-2050-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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44
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Goldfarb LG, Olivé M, Vicart P, Goebel HH. Intermediate filament diseases: desminopathy. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2008; 642:131-64. [PMID: 19181099 PMCID: PMC2776705 DOI: 10.1007/978-0-387-84847-1_11] [Citation(s) in RCA: 81] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
Desminopathy is one of the most common intermediate filament human disorders associated with mutations in closely interacting proteins, desmin and alphaB-crystallin. The inheritance pattern in familial desminopathy is characterized as autosomal dominant or autosomal recessive, but many cases have no family history. At least some and likely most sporadic desminopathy cases are associated with de novo DES mutations. The age of disease onset and rate of progression may vary depending on the type of inheritance and location of the causative mutation. Typically, the illness presents with lower and later upper limb muscle weakness slowly spreading to involve truncal, neck-flexor, facial and bulbar muscles. Skeletal myopathy is often combined with cardiomyopathy manifested by conduction blocks, arrhythmias and chronic heart failure resulting in premature sudden death. Respiratory muscle weakness is a major complication in some patients. Sections of the affected skeletal and cardiac muscles show abnormal fibre areas containing chimeric aggregates consisting of desmin and other cytoskeletal proteins. Various DES gene mutations: point mutations, an insertion, small in-frame deletions and a larger exon-skipping deletion, have been identified in desminopathy patients. The majority of these mutations are located in conserved alpha-helical segments, but additional mutations have recently been identified in the tail domain. Filament and network assembly studies indicate that most but not all disease-causing mutations make desmin assembly-incompetent and able to disrupt a pre-existing filamentous network in dominant-negative fashion. AlphaB-crystallin serves as a chaperone for desmin preventing its aggregation under various forms of stress; mutant CRYAB causes cardiac and skeletal myopathies identical to those resulting from DES mutations.
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Affiliation(s)
- Lev G Goldfarb
- National Institutes of Health, Bethesda, MD 20892-9404, USA.
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45
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Bergman JEH, Veenstra-Knol HE, van Essen AJ, van Ravenswaaij CMA, den Dunnen WFA, van den Wijngaard A, van Tintelen JP. Two related Dutch families with a clinically variable presentation of cardioskeletal myopathy caused by a novel S13F mutation in the desmin gene. Eur J Med Genet 2007; 50:355-66. [PMID: 17720647 DOI: 10.1016/j.ejmg.2007.06.003] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2007] [Accepted: 06/08/2007] [Indexed: 11/28/2022]
Abstract
Desmin-related myopathy is characterised by skeletal muscle weakness often combined with cardiac involvement. Mutations in the desmin gene have been described as a cause of desmin-related myopathy (OMIM 601419). We report here on two distantly related Dutch families with autosomal dominant inheritance of desmin-related myopathy affecting 15 family members. A highly heterogeneous clinical picture is apparent, varying from isolated dilated cardiomyopathy to a more generalised skeletal myopathy and mild respiratory problems. Morphological analysis of muscle biopsies revealed intracytoplasmic desmin aggregates (desmin and p62 staining). In both families we identified an identical novel pathogenic heterozygous missense mutation, S13F, in the 'head' domain of the desmin gene which cosegregates with the disease phenotype. This is the 5th reported missense mutation located at the 'head' domain of the desmin gene and the first reported Dutch family with desmin-related myopathy. This article illustrates the importance of analysing the desmin gene in patients with (familial) cardiac conduction disease, dilated cardiomyopathy and/or a progressive skeletal myopathy resembling limb-girdle muscular dystrophy.
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Affiliation(s)
- Jorieke E H Bergman
- Department of Genetics, University Medical Center Groningen, University of Groningen, Post Box 30001, 9700 RB Groningen, The Netherlands.
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46
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Parry DAD, Strelkov SV, Burkhard P, Aebi U, Herrmann H. Towards a molecular description of intermediate filament structure and assembly. Exp Cell Res 2007; 313:2204-16. [PMID: 17521629 DOI: 10.1016/j.yexcr.2007.04.009] [Citation(s) in RCA: 120] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2007] [Revised: 04/04/2007] [Accepted: 04/05/2007] [Indexed: 11/28/2022]
Abstract
Intermediate filaments (IFs) represent one of the prominent cytoskeletal elements of metazoan cells. Their constituent proteins are coded by a multigene family, whose members are expressed in complex patterns that are controlled by developmental programs of differentiation. Hence, IF proteins found in epidermis differ significantly from those in muscle or neuronal tissues. Due to their fibrous nature, which stems from a fairly conserved central alpha-helical coiled-coil rod domain, IF proteins have long resisted crystallization and thus determination of their atomic structure. Since they represent the primary structural elements that determine the shape of the nucleus and the cell more generally, a major challenge is to arrive at a more rational understanding of how their nanomechanical properties effect the stability and plasticity of cells and tissues. Here, we review recent structural results of the coiled-coil dimer, assembly intermediates and growing filaments that have been obtained by a hybrid methods approach involving a rigorous combination of X-ray crystallography, small angle X-ray scattering, cryo-electron tomography, computational analysis and molecular modeling.
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Affiliation(s)
- David A D Parry
- Institute of Fundamental Sciences, Massey University, Private Bag 11-222, Palmerston North, New Zealand
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47
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Olivé M, Armstrong J, Miralles F, Pou A, Fardeau M, Gonzalez L, Martínez F, Fischer D, Martínez Matos JA, Shatunov A, Goldfarb L, Ferrer I. Phenotypic patterns of desminopathy associated with three novel mutations in the desmin gene. Neuromuscul Disord 2007; 17:443-50. [PMID: 17418574 PMCID: PMC5127195 DOI: 10.1016/j.nmd.2007.02.009] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2006] [Revised: 02/09/2007] [Accepted: 02/15/2007] [Indexed: 10/23/2022]
Abstract
Desminopathy represents a subgroup of myofibrillar myopathies caused by mutations in the desmin gene. Three novel disease-associated mutations in the desmin gene were identified in unrelated Spanish families affected by cardioskeletal myopathy. A selective pattern of muscle involvement, which differed from that observed in myofibrillar myopathy resulting from mutations in the myotilin gene, was observed in each of the three families with novel mutations and each of three desminopathy patients with known desmin mutations. Prominent joint retractions at the ankles and characteristic nasal speech were observed early in the course of illness. These findings suggest that muscle imaging in combination with routine clinical and pathological examination may be helpful in distinguishing desminopathy from other forms of myofibrillar myopathy and ordering appropriate molecular investigations.
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Affiliation(s)
- Montse Olivé
- Institut de Neuropatologia, IDIBELL-Hospital de Bellvitge, Hospitalet de Llobregat, Barcelona, Spain.
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48
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Capetanaki Y, Bloch RJ, Kouloumenta A, Mavroidis M, Psarras S. Muscle intermediate filaments and their links to membranes and membranous organelles. Exp Cell Res 2007; 313:2063-76. [PMID: 17509566 DOI: 10.1016/j.yexcr.2007.03.033] [Citation(s) in RCA: 203] [Impact Index Per Article: 11.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2007] [Revised: 03/20/2007] [Accepted: 03/29/2007] [Indexed: 12/17/2022]
Abstract
Intermediate filaments (IFs) play a key role in the integration of structure and function of striated muscle, primarily by mediating mechanochemical links between the contractile apparatus and mitochondria, myonuclei, the sarcolemma and potentially the vesicle trafficking apparatus. Linkage of all these membranous structures to the contractile apparatus, mainly through the Z-disks, supports the integration and coordination of growth and energy demands of the working myocyte, not only with force transmission, but also with de novo gene expression, energy production and efficient protein and lipid trafficking and targeting. Desmin, the most abundant and intensively studied muscle intermediate filament protein, is linked to proper costamere organization, myoblast and stem cell fusion and differentiation, nuclear shape and positioning, as well as mitochondrial shape, structure, positioning and function. Similar links have been established for lysosomes and lysosome-related organelles, consistent with the presence of widespread links between IFs and membranous structures and the regulation of their fusion, morphology and stabilization necessary for cell survival.
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Affiliation(s)
- Yassemi Capetanaki
- Cell Biology Division, Center of Basic Research, Biomedical Research Foundation Academy of Athens, Soranou Efessiou 4, 12965 Athens, Greece.
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49
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Bär H, Mücke N, Katus HA, Aebi U, Herrmann H. Assembly defects of desmin disease mutants carrying deletions in the alpha-helical rod domain are rescued by wild type protein. J Struct Biol 2006; 158:107-15. [PMID: 17188893 DOI: 10.1016/j.jsb.2006.10.029] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2006] [Accepted: 10/30/2006] [Indexed: 11/16/2022]
Abstract
Most mutations of desmin that cause severe autosomal dominant forms of myofibrillar myopathy are point mutations and locate in the central alpha-helical coiled-coil rod domain. Recently, two in-frame deletions of one and three amino acids, respectively, in the alpha-helix have been described and discussed to drastically interfere with the architecture of the desmin dimer and possibly also the formation of tetramers and higher order complexes [Kaminska, A., Strelkov, S.V., Goudeau, B., Olive, M., Dagvadorj, A., Fidzianska, A., Simon-Casteras, M., Shatunov, A., Dalakas, M.C., Ferrer, I., Kwiecinski, H., Vicart, P., Goldfarb, L.G., 2004. Small deletions disturb desmin architecture leading to breakdown of muscle cells and development of skeletal or cardioskeletal myopathy. Hum. Genet. 114, 306-313.]. Therefore, it was proposed that they may poison intermediate filament (IF) assembly. We have now recombinantly synthesized both mutant proteins and subjected them to comprehensive in vitro assembly experiments. While exhibiting assembly defects when analyzed on their own, both one-to-one mixtures of the respective mutant protein with wild type desmin facilitated proper filament formation. Transient transfection studies complemented this fundamental finding by demonstrating that wild type desmin is also rescuing these assembly defects in vivo. In summary, our findings strongly question the previous hypothesis that it is assembly incompetence due to molecular rearrangements caused by the mutations, which triggers the development of disease. As an alternative, we propose that these mutations cause subtle age-dependent structural alterations of desmin IFs that eventually lead to disease.
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Affiliation(s)
- Harald Bär
- Department of Cardiology, University of Heidelberg, D-69120 Heidelberg, Germany.
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