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İpek R, Çavdartepe BE, Bozdoğan ST, Yiş U. COL12A1 Gene Variant and a Review of the Literature: A Case Report of Ullrich Congenital Muscular Dystrophy. Mol Syndromol 2024; 15:311-316. [PMID: 39129837 PMCID: PMC11316441 DOI: 10.1159/000536344] [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: 06/29/2023] [Accepted: 01/16/2024] [Indexed: 08/13/2024] Open
Abstract
Introduction Mutations in collagen type IV-associated genes lead to Ullrich congenital muscular dystrophy (UCMD) and Bethlem myopathy (BM). COL12A1 gene mutations have rarely been reported in patients with UCMD- and BM-like disorders not involving COL6 mutations. UCMD-2 results from homozygous mutations in the COL12A1 gene on the long arm of chromosome 6. Pathogenic variants in COL12A1 result in a rare congenital connective tissue/myopathy overlap syndrome under the heading of myopathic Ehlers-Danlos syndrome. COL12A1 dominant pathogenic variants have been rarely reported, and the phenotypic spectrum has not yet been identified. Case Presentation We describe a female patient aged 2 years and 10 months exhibiting a milder phenotype who presented due to pronounced joint hyperlaxity, frequent falls, and skin lesions. Genetic analysis revealed a homozygous c.8903C>T (p.Pro2968Leu) missense variant that had previously been described but concerning which there had been no clinical report, in the COL12A1 gene. Discussion/Conclusion This report is presented in order to raise awareness of rare mutations in the COL12A1 gene that affect muscle and connective tissue and to add to the literature in defining the phenotypic spectrum.
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Affiliation(s)
- Rojan İpek
- Department of Pediatric Neurology, Dicle University, Diyarbakır, Turkey
| | | | | | - Uluç Yiş
- Departmant of Pediatric Neurology, Dokuz Eylül University, İzmir, Turkey
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2
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Wang J, Xing C, Wang H, Zhang H, Wei W, Xu J, Liu Y, Guo X, Jiang R. Identification of key modules and hub genes involved in regulating the feather follicle development of Wannan chickens using WGCNA. Poult Sci 2024; 103:103903. [PMID: 38908121 PMCID: PMC11253687 DOI: 10.1016/j.psj.2024.103903] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2024] [Revised: 05/21/2024] [Accepted: 05/22/2024] [Indexed: 06/24/2024] Open
Abstract
Carcass appearance is important economic trait, which affects customers in making purchase decisions. Both density and diameter of feather follicles are two important indicators of carcass appearance. However, the regulatory network and key genes be involved in feather follicle development remain poorly understood. To identify key genes and modules that involved in feather follicle development in chickens, 16 transcriptome datasets of Wannan chickens skin tissue (3 birds at the E9, E11, and E14, respectively, and 7 birds at the 12W) were used for weighted gene co-expression network analysis (WGCNA) analysis, and 12 skin tissue samples (3 birds for each stage) were selected for DEGs analysis. A total of 5,025, 2,337, and 10,623 DEGs were identified in 3 comparison groups, including the E9 vs. E11, the E11 vs. E14, and the E14 vs. 12W. Additionally, 31 co-expression gene modules were identified by WGCNA and the dark-orange, cyan, and blue module were found to be significantly associated with feather follicle development (p < 0.01). In total, 92,898 and 8,448 hub genes were obtained in the dark-orange, cyan, and blue modules, respectively. We focused on the cyan and blue modules, as 6 and 336 hub genes of these modules were identified to overlap with the DEGs of the three comparison groups, respectively. The 6 overlapped genes such as LAMC2, COL6A3, and COL6A2 etc., were over-represented in 12 categories such as focal adhesion and ECM-receptor interaction signaling pathway. Among the 336 genes that overlapped between the blue module and different DEGs comparison groups several genes including WNT7A and WNT9B were enriched in Wnt and ECM-receptor interaction signaling pathway. These results suggested that the LAMC2, COL6A3, COL6A2, WNT7A, and WNT9B genes may play a crucial role in the regulation of feather follicle development in Wannan chickens. Our results provided a reference for the molecular regulatory network and key genes in the development of feather follicles and contribute to molecular breeding for carcass appearance traits in chickens.
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Affiliation(s)
- Jiangxian Wang
- College of Animal Science and Technology, Anhui Agricultural University, Hefei 230036, China
| | - Chaohui Xing
- College of Animal Science and Technology, Anhui Agricultural University, Hefei 230036, China
| | - Hao Wang
- College of Animal Science and Technology, Anhui Agricultural University, Hefei 230036, China
| | - Hong Zhang
- College of Animal Science and Technology, Anhui Agricultural University, Hefei 230036, China
| | - Wei Wei
- College of Animal Science and Technology, Anhui Agricultural University, Hefei 230036, China
| | - Jinmei Xu
- College of Animal Science and Technology, Anhui Agricultural University, Hefei 230036, China
| | - Yanan Liu
- College of Animal Science and Technology, Anhui Agricultural University, Hefei 230036, China
| | - Xing Guo
- College of Animal Science and Technology, Anhui Agricultural University, Hefei 230036, China
| | - Runshen Jiang
- College of Animal Science and Technology, Anhui Agricultural University, Hefei 230036, China.
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3
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Komori T, Kram V, Perry S, Pham HT, Jani P, Kilts TM, Watanabe K, Kim DG, Martin D, Young MF. Type VI Collagen Deficiency Causes Enhanced Periodontal Tissue Destruction. J Dent Res 2024:220345241256306. [PMID: 38910439 DOI: 10.1177/00220345241256306] [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: 06/25/2024] Open
Abstract
The periodontal ligament (PDL) is a fibrillar connective tissue that lies between the alveolar bone and the tooth and is composed of highly specialized extracellular matrix (ECM) molecules and a heterogeneous population of cells that are responsible for collagen formation, immune response, bone formation, and chewing force sensation. Type VI collagen (COL6), a widely distributed ECM molecule, plays a critical role in the structural integrity and mechanical properties of various tissues including muscle, tendon, bone, cartilage, and skin. However, its role in the PDL remains largely unknown. Our study shows that deficiency of COL6 impairs PDL fibrillogenesis and exacerbates tissue destruction in ligature-induced periodontitis (LIP). We found that COL6-deficient mice exhibited increased bone loss and degraded PDL in LIP and that fibroblasts expressing high levels of Col6α2 are pivotal in ECM organization and cell-ECM interactions. Moreover, COL6 deficiency in the PDL led to an increased number of fibroblasts geared toward the inflammatory response. We also observed that cultured COL6-deficient fibroblasts from the PDL exhibited decreased expression of genes related to collagen fiber turnover and ECM organization as well as migration and proliferation. Our findings suggest that COL6 plays a crucial role in the PDL, influencing fibroblast function in fibrillogenesis and affecting the immune response in periodontitis. These insights advance our understanding of the molecular mechanisms underlying PDL maturation and periodontal disease.
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Affiliation(s)
- T Komori
- Molecular Biology of Bones and Teeth Section, National Institute of Dental and Craniofacial Research, Department of Health and Human Services, National Institutes of Health, Bethesda, MD, USA
| | - V Kram
- Molecular Biology of Bones and Teeth Section, National Institute of Dental and Craniofacial Research, Department of Health and Human Services, National Institutes of Health, Bethesda, MD, USA
| | - S Perry
- Molecular Biology of Bones and Teeth Section, National Institute of Dental and Craniofacial Research, Department of Health and Human Services, National Institutes of Health, Bethesda, MD, USA
| | - H T Pham
- Molecular Biology of Bones and Teeth Section, National Institute of Dental and Craniofacial Research, Department of Health and Human Services, National Institutes of Health, Bethesda, MD, USA
- Hai Phong University of Medicine and Pharmacy, Faculty of Dentistry, Haiphong, Vietnam
| | - P Jani
- Molecular Biology of Bones and Teeth Section, National Institute of Dental and Craniofacial Research, Department of Health and Human Services, National Institutes of Health, Bethesda, MD, USA
| | - T M Kilts
- Molecular Biology of Bones and Teeth Section, National Institute of Dental and Craniofacial Research, Department of Health and Human Services, National Institutes of Health, Bethesda, MD, USA
| | - K Watanabe
- Division of Orthodontics, College of Dentistry, The Ohio State University, Columbus, OH, USA
| | - D G Kim
- Division of Orthodontics, College of Dentistry, The Ohio State University, Columbus, OH, USA
| | - D Martin
- NIDCD/NIDCR Genomics and Computational Biology Core, National Institutes of Health, Bethesda, MD, USA
| | - M F Young
- Molecular Biology of Bones and Teeth Section, National Institute of Dental and Craniofacial Research, Department of Health and Human Services, National Institutes of Health, Bethesda, MD, USA
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4
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Brull A, Sarathy A, Bolduc V, Chen GS, McCarty RM, Bönnemann CG. Optimized allele-specific silencing of the dominant-negative COL6A1 G293R substitution causing collagen VI-related dystrophy. MOLECULAR THERAPY. NUCLEIC ACIDS 2024; 35:102178. [PMID: 38617974 PMCID: PMC11015156 DOI: 10.1016/j.omtn.2024.102178] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/26/2023] [Accepted: 03/19/2024] [Indexed: 04/16/2024]
Abstract
Collagen VI-related dystrophies (COL6-RDs) are a group of severe, congenital-onset muscular dystrophies for which there is no effective causative treatment. Dominant-negative mutations are common in COL6A1, COL6A2, and COL6A3 genes, encoding the collagen α1, α2, and α3 (VI) chains. They act by incorporating into the hierarchical assembly of the three α (VI) chains and consequently produce a dysfunctional collagen VI extracellular matrix, while haploinsufficiency for any of the COL6 genes is not associated with disease. Hence, allele-specific transcript inactivation is a valid therapeutic strategy, although selectively targeting a pathogenic single nucleotide variant is challenging. Here, we develop a small interfering RNA (siRNA) that robustly, and in an allele-specific manner, silences a common glycine substitution (G293R) caused by a single nucleotide change in COL6A1 gene. By intentionally introducing an additional mismatch into the siRNA design, we achieved enhanced specificity toward the mutant allele. Treatment of patient-derived fibroblasts effectively reduced the levels of mutant transcripts while maintaining unaltered wild-type transcript levels, rescuing the secretion and assembly of collagen VI matrix by reducing the dominant-negative effect of mutant chains. Our findings establish a promising treatment approach for patients with the recurrent dominantly negative acting G293R glycine substitution.
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Affiliation(s)
- Astrid Brull
- Neurogenetics and Neuromuscular Disorders of Childhood Section, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD 20892, USA
| | - Apurva Sarathy
- Neurogenetics and Neuromuscular Disorders of Childhood Section, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD 20892, USA
| | - Véronique Bolduc
- Neurogenetics and Neuromuscular Disorders of Childhood Section, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD 20892, USA
| | - Grace S. Chen
- Neurogenetics and Neuromuscular Disorders of Childhood Section, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD 20892, USA
| | - Riley M. McCarty
- Neurogenetics and Neuromuscular Disorders of Childhood Section, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD 20892, USA
| | - Carsten G. Bönnemann
- Neurogenetics and Neuromuscular Disorders of Childhood Section, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD 20892, USA
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5
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Lee CL, Chuang CK, Chiu HC, Chang YH, Tu YR, Lo YT, Lin HY, Lin SP. Application of whole exome sequencing in the diagnosis of muscular disorders: a study of Taiwanese pediatric patients. Front Genet 2024; 15:1365729. [PMID: 38818036 PMCID: PMC11137626 DOI: 10.3389/fgene.2024.1365729] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2024] [Accepted: 04/23/2024] [Indexed: 06/01/2024] Open
Abstract
Background Muscular dystrophies and congenital myopathies encompass various inherited muscular disorders that present diagnostic challenges due to clinical complexity and genetic heterogeneity. Methods This study aimed to investigate the use of whole exome sequencing (WES) in diagnosing muscular disorders in pediatric patients in Taiwan. Out of 161 pediatric patients suspected to have genetic/inherited myopathies, 115 received a molecular diagnosis through conventional tests, single gene testing, and gene panels. The remaining 46 patients were divided into three groups: Group 1 (multiplex ligation-dependent probe amplification-negative Duchenne muscular dystrophy) with three patients (6.5%), Group 2 (various forms of muscular dystrophies) with 21 patients (45.7%), and Group 3 (congenital myopathies) with 22 patients (47.8%). Results WES analysis of these groups found pathogenic variants in 100.0% (3/3), 57.1% (12/21), and 68.2% (15/22) of patients in Groups 1 to 3, respectively. WES had a diagnostic yield of 65.2% (30 patients out of 46), detecting 30 pathogenic or potentially pathogenic variants across 28 genes. Conclusion WES enables the diagnosis of rare diseases with symptoms and characteristics similar to congenital myopathies and muscular dystrophies, such as muscle weakness. Consequently, this approach facilitates targeted therapy implementation and appropriate genetic counseling.
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Affiliation(s)
- Chung-Lin Lee
- Department of Pediatrics, MacKay Memorial Hospital, Taipei, Taiwan
- Institute of Clinical Medicine, National Yang-Ming Chiao-Tung University, Taipei, Taiwan
- Department of Rare Disease Center, MacKay Memorial Hospital, Taipei, Taiwan
- Department of Medicine, Mackay Medical College, Taipei, Taiwan
- Mackay Junior College of Medicine, Nursing and Management, Taipei, Taiwan
| | - Chih-Kuang Chuang
- Division of Genetics and Metabolism, Department of Medical Research, MacKay Memorial Hospital, Taipei, Taiwan
- College of Medicine, Fu-Jen Catholic University, Taipei, Taiwan
| | - Huei-Ching Chiu
- Department of Pediatrics, MacKay Memorial Hospital, Taipei, Taiwan
| | - Ya-Hui Chang
- Department of Pediatrics, MacKay Memorial Hospital, Taipei, Taiwan
- Department of Rare Disease Center, MacKay Memorial Hospital, Taipei, Taiwan
| | - Yuan-Rong Tu
- Division of Genetics and Metabolism, Department of Medical Research, MacKay Memorial Hospital, Taipei, Taiwan
| | - Yun-Ting Lo
- Department of Rare Disease Center, MacKay Memorial Hospital, Taipei, Taiwan
| | - Hsiang-Yu Lin
- Department of Pediatrics, MacKay Memorial Hospital, Taipei, Taiwan
- Department of Rare Disease Center, MacKay Memorial Hospital, Taipei, Taiwan
- Department of Medicine, Mackay Medical College, Taipei, Taiwan
- Mackay Junior College of Medicine, Nursing and Management, Taipei, Taiwan
- Division of Genetics and Metabolism, Department of Medical Research, MacKay Memorial Hospital, Taipei, Taiwan
- Department of Medical Research, China Medical University Hospital, China Medical University, Taichung, Taiwan
| | - Shuan-Pei Lin
- Department of Pediatrics, MacKay Memorial Hospital, Taipei, Taiwan
- Department of Rare Disease Center, MacKay Memorial Hospital, Taipei, Taiwan
- Department of Medicine, Mackay Medical College, Taipei, Taiwan
- Division of Genetics and Metabolism, Department of Medical Research, MacKay Memorial Hospital, Taipei, Taiwan
- Department of Infant and Child Care, National Taipei University of Nursing and Health Sciences, Taipei, Taiwan
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6
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Henriksen K, Genovese F, Reese-Petersen A, Audoly LP, Sun K, Karsdal MA, Scherer PE. Endotrophin, a Key Marker and Driver for Fibroinflammatory Disease. Endocr Rev 2024; 45:361-378. [PMID: 38091968 DOI: 10.1210/endrev/bnad036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/08/2023] [Revised: 11/02/2023] [Accepted: 12/08/2023] [Indexed: 01/12/2024]
Abstract
Our overview covers several key areas related to recent results obtained for collagen type VI and endotrophin (ETP). (1) An introduction to the history of ETP, including how it was identified, how it is released, and its function and potential receptors. (2) An introduction to the collagen family, with a focus on what differentiates collagen type VI from an evolutionary standpoint. (3) An overview of collagen type VI, the 6 individual chains (COL6A1, A2, A3, A4, A5, and A6), their differences and similarities, as well as their expression profiles and function. (4) A detailed analysis of COL6A3, including the cleaved product endotrophin, and what separates it from the other 5 collagen 6 molecules, including its suggested function based on insights gained from knockout and gain of function mouse models. (5) The pathology of ETP. What leads to its presence and release and what are the consequences thereof? (6) Functional implications of circulating ETP. Here we review the data with the functional roles of ETP in mind. (7) We propose that ETP is a mediator for fibrotic (or fibroinflammatory) disorders. Based on what we know about ETP, we have to consider it as a target for the treatment of fibrotic (or fibroinflammatory) disorders. What segment(s) of the patient population would most dramatically respond to an ETP-targeted intervention? How can we find the population that would profit most from an intervention? We aim to present a broad overview over the ETP field at large, providing an assessment of where the future research efforts need to be placed to tap into the vast potential of ETP, both as a marker and as a target in different diseases.
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Affiliation(s)
- Kim Henriksen
- Department of Cardiovascular Disease, Nordic Bioscience A/S, DK-2730 Herlev, Denmark
| | - Federica Genovese
- Department of Cardiovascular Disease, Nordic Bioscience A/S, DK-2730 Herlev, Denmark
| | | | | | - Kai Sun
- Center for Metabolic and Degenerative Diseases, Institute of Molecular Medicine, University of Texas Health Science Center at Houston, Houston, TX 77030, USA
| | - Morten A Karsdal
- Department of Cardiovascular Disease, Nordic Bioscience A/S, DK-2730 Herlev, Denmark
| | - Philipp E Scherer
- Touchstone Diabetes Center, The University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
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7
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Foley AR, Bolduc V, Guirguis F, Donkervoort S, Hu Y, Orbach R, McCarty RM, Sarathy A, Norato G, Cummings BB, Lek M, Sarkozy A, Butterfield RJ, Kirschner J, Nascimento A, Benito DND, Quijano-Roy S, Stojkovic T, Merlini L, Comi G, Ryan M, McDonald D, Munot P, Yoon G, Leung E, Finanger E, Leach ME, Collins J, Tian C, Mohassel P, Neuhaus SB, Saade D, Cocanougher BT, Chu ML, Scavina M, Grosmann C, Richardson R, Kossak BD, Gospe SM, Bhise V, Taurina G, Lace B, Troncoso M, Shohat M, Shalata A, Chan SH, Jokela M, Palmio J, Haliloğlu G, Jou C, Gartioux C, Solomon-Degefa H, Freiburg CD, Schiavinato A, Zhou H, Aguti S, Nevo Y, Nishino I, Jimenez-Mallebrera C, Lamandé SR, Allamand V, Gualandi F, Ferlini A, MacArthur DG, Wilton SD, Wagener R, Bertini E, Muntoni F, Bönnemann CG. The recurrent deep intronic pseudoexon-inducing variant COL6A1 c.930+189C>T results in a consistently severe phenotype of COL6-related dystrophy: Towards clinical trial readiness for splice-modulating therapy. MEDRXIV : THE PREPRINT SERVER FOR HEALTH SCIENCES 2024:2024.03.29.24304673. [PMID: 38585825 PMCID: PMC10996746 DOI: 10.1101/2024.03.29.24304673] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/09/2024]
Abstract
Collagen VI-related dystrophies (COL6-RDs) manifest with a spectrum of clinical phenotypes, ranging from Ullrich congenital muscular dystrophy (UCMD), presenting with prominent congenital symptoms and characterised by progressive muscle weakness, joint contractures and respiratory insufficiency, to Bethlem muscular dystrophy, with milder symptoms typically recognised later and at times resembling a limb girdle muscular dystrophy, and intermediate phenotypes falling between UCMD and Bethlem muscular dystrophy. Despite clinical and immunohistochemical features highly suggestive of COL6-RD, some patients had remained without an identified causative variant in COL6A1, COL6A2 or COL6A3. With combined muscle RNA-sequencing and whole-genome sequencing we uncovered a recurrent, de novo deep intronic variant in intron 11 of COL6A1 (c.930+189C>T) that leads to a dominantly acting in-frame pseudoexon insertion. We subsequently identified and have characterised an international cohort of forty-four patients with this COL6A1 intron 11 causative variant, one of the most common recurrent causative variants in the collagen VI genes. Patients manifest a consistently severe phenotype characterised by a paucity of early symptoms followed by an accelerated progression to a severe form of UCMD, except for one patient with somatic mosaicism for this COL6A1 intron 11 variant who manifests a milder phenotype consistent with Bethlem muscular dystrophy. Characterisation of this individual provides a robust validation for the development of our pseudoexon skipping therapy. We have previously shown that splice-modulating antisense oligomers applied in vitro effectively decreased the abundance of the mutant pseudoexon-containing COL6A1 transcripts to levels comparable to the in vivo scenario of the somatic mosaicism shown here, indicating that this therapeutic approach carries significant translational promise for ameliorating the severe form of UCMD caused by this common recurrent COL6A1 causative variant to a Bethlem muscular dystrophy phenotype.
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Affiliation(s)
- A. Reghan Foley
- Neuromuscular and Neurogenetic Disorders of Childhood Section, Neurogenetics Branch, National Institute of Neurological Disorders and Stroke, NIH, Bethesda, MD 20892, USA
| | - Véronique Bolduc
- Neuromuscular and Neurogenetic Disorders of Childhood Section, Neurogenetics Branch, National Institute of Neurological Disorders and Stroke, NIH, Bethesda, MD 20892, USA
| | - Fady Guirguis
- Neuromuscular and Neurogenetic Disorders of Childhood Section, Neurogenetics Branch, National Institute of Neurological Disorders and Stroke, NIH, Bethesda, MD 20892, USA
| | - Sandra Donkervoort
- Neuromuscular and Neurogenetic Disorders of Childhood Section, Neurogenetics Branch, National Institute of Neurological Disorders and Stroke, NIH, Bethesda, MD 20892, USA
| | - Ying Hu
- Neuromuscular and Neurogenetic Disorders of Childhood Section, Neurogenetics Branch, National Institute of Neurological Disorders and Stroke, NIH, Bethesda, MD 20892, USA
| | - Rotem Orbach
- Neuromuscular and Neurogenetic Disorders of Childhood Section, Neurogenetics Branch, National Institute of Neurological Disorders and Stroke, NIH, Bethesda, MD 20892, USA
- Dana-Dwek Children’s Hospital, Tel Aviv 64239, Israel
| | - Riley M. McCarty
- Neuromuscular and Neurogenetic Disorders of Childhood Section, Neurogenetics Branch, National Institute of Neurological Disorders and Stroke, NIH, Bethesda, MD 20892, USA
| | - Apurva Sarathy
- Neuromuscular and Neurogenetic Disorders of Childhood Section, Neurogenetics Branch, National Institute of Neurological Disorders and Stroke, NIH, Bethesda, MD 20892, USA
| | - Gina Norato
- Clinical Trials Unit, National Institute of Neurological Disorders and Stroke, NIH, Bethesda, MD 20892, USA
| | | | - Monkol Lek
- Broad Institute of MIT and Harvard, Cambridge, MA 02142, USA
| | - Anna Sarkozy
- Dubowitz Neuromuscular Centre, UCL Great Ormond Street Institute of Child Health and Great Ormond Street Hospital for Children, London WC1N 1EH, UK
| | - Russell J. Butterfield
- Departments of Neurology and Pediatrics, University of Utah, Salt Lake City, UT 84132, USA
| | - Janbernd Kirschner
- Department of Neuropediatrics and Muscle Disorders, Medical Center – University of Freiburg, Faculty of Medicine, Freiburg 79110, Germany
| | - Andrés Nascimento
- Neuromuscular Unit, Neuropediatrics Department, Institut de Recerca Sant Joan de Déu, Hospital Sant Joan de Déu. CIBERER ISCIII. Barcelona 08950, Spain
| | - Daniel Natera-de Benito
- Neuromuscular Unit, Neuropediatrics Department, Institut de Recerca Sant Joan de Déu, Hospital Sant Joan de Déu. CIBERER ISCIII. Barcelona 08950, Spain
| | - Susana Quijano-Roy
- Garches Neuromuscular Reference Center, Child Neurology and ICU Department, APHP Raymond Poincare University Hospital (UVSQ Paris Saclay), Garches 92380, France
| | - Tanya Stojkovic
- Centre de Référence des Maladies Neuromusculaires Nord/Est/Île-de-France, Institut de Myologie, Hôpital Pitié-Salpêtrière, AP-HP, Paris 75013, France
| | - Luciano Merlini
- Department of Biomedical and Neuromotor Sciences, University of Bologna, Bologna 40126, Italy
| | - Giacomo Comi
- Neurology Unit, Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Monique Ryan
- Department of Neurology, The Royal Children’s Hospital, Parkville, VIC 3052, Australia
| | - Denise McDonald
- Department of Neurodisability, Children’s Health Ireland at Tallaght, Dublin 24 Ireland
| | - Pinki Munot
- Dubowitz Neuromuscular Centre, UCL Great Ormond Street Institute of Child Health and Great Ormond Street Hospital for Children, London WC1N 1EH, UK
| | - Grace Yoon
- Department of Pediatrics, Division of Clinical and Metabolic Genetics, The Hospital for Sick Children, University of Toronto, Toronto, ON M5G 1X8, Canada
| | - Edward Leung
- Department of Pediatrics and Child Health, University of Manitoba, Winnipeg, MB R3A 1S1, Canada
| | - Erika Finanger
- Department of Pediatrics and Neurology, Oregon Health & Science University, Portland, OR 97239, USA
| | - Meganne E. Leach
- Neuromuscular and Neurogenetic Disorders of Childhood Section, Neurogenetics Branch, National Institute of Neurological Disorders and Stroke, NIH, Bethesda, MD 20892, USA
- Department of Pediatrics and Neurology, Oregon Health & Science University, Portland, OR 97239, USA
| | - James Collins
- Divisions of Neurology and Pediatrics, Cincinnati Children’s Hospital Medical Center, Cincinnati, OH 45229, USA
| | - Cuixia Tian
- Divisions of Neurology and Pediatrics, Cincinnati Children’s Hospital Medical Center, Cincinnati, OH 45229, USA
| | - Payam Mohassel
- Neuromuscular and Neurogenetic Disorders of Childhood Section, Neurogenetics Branch, National Institute of Neurological Disorders and Stroke, NIH, Bethesda, MD 20892, USA
| | - Sarah B. Neuhaus
- Neuromuscular and Neurogenetic Disorders of Childhood Section, Neurogenetics Branch, National Institute of Neurological Disorders and Stroke, NIH, Bethesda, MD 20892, USA
| | - Dimah Saade
- Neuromuscular and Neurogenetic Disorders of Childhood Section, Neurogenetics Branch, National Institute of Neurological Disorders and Stroke, NIH, Bethesda, MD 20892, USA
| | - Benjamin T. Cocanougher
- Division of Medical Genetics, Department of Pediatrics, Duke University, Durham, NC 27710, USA
| | - Mary-Lynn Chu
- Department of Neurology, New York University School of Medicine, New York, NY 10016, USA
| | - Mena Scavina
- Division of Neurology, Nemours Children’s Hospital Delaware, Wilmington, DE 19803, USA
| | - Carla Grosmann
- Department of Neurology, Rady Children’s Hospital University of California San Diego, San Diego, CA 92123, USA
| | - Randal Richardson
- Department of Neurology, Gillette Children’s Specialty Healthcare, St Paul, MN 55101, USA
| | - Brian D. Kossak
- Department of Neurology, Dartmouth Hitchcock Medical Center, Lebanon, NH 03766, USA
| | - Sidney M. Gospe
- Department of Neurology and Pediatrics, University of Washington, Seattle, WA 98105, USA
| | - Vikram Bhise
- Departments of Pediatrics and Neurology, Rutgers Robert Wood Johnson Medical School, Rutgers University, New Brunswick, NJ 08901, USA
| | - Gita Taurina
- Children’s Clinical University Hospital, Medical Genetics and Prenatal Diagnostic Clinic, Riga 1004, Latvia
| | - Baiba Lace
- Riga East Clinical University, Institute of Clinical and Preventive Medicine of the University of Latvia, Riga 1586, Latvia
| | - Monica Troncoso
- Pediatric Neuropsychiatry Service, Hospital Clínico San Borja Arriarán, Pediatric Department, Universidad de Chile, Santiago 1234, Chile
| | - Mordechai Shohat
- The Genomics Unit, Sheba Cancer Research Center, Sheba Medical Center, Ramat Gan 52621, Israel
| | - Adel Shalata
- The Simon Winter Institute for Human Genetics, Bnai Zion Medical Center, The Ruth and Bruce Rappaport Faculty of Medicine, Technion-Israel Institute of Technology, Haifa 32000, Israel
| | - Sophelia H.S. Chan
- Department of Paediatrics and Adolescent Medicine, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, Special Administrative Region, China
| | - Manu Jokela
- Clinical Neurosciences, University of Turku, Turku, Finland and Neurocenter, Turku University Hospital, Turku 20520, Finland
- Neuromuscular Research Center, Tampere University and Tampere University Hospital, Tampere 33101, Finland
| | - Johanna Palmio
- Neuromuscular Research Center, Tampere University and Tampere University Hospital, Tampere 33101, Finland
| | - Göknur Haliloğlu
- Division of Pediatric Neurology, Department of Pediatrics, Hacettepe University Faculty of Medicine, Ankara 06230, Turkey
| | - Cristina Jou
- Pathology department, Institut de Recerca Sant Joan de Déu, Hospital Sant Joan de Déu, Barcelona 08950, Spain
| | - Corine Gartioux
- INSERM, Institut de Myologie, Centre de Recherche en Myologie, Sorbonne Université, Paris 75013, France
| | | | - Carolin D. Freiburg
- Center for Biochemistry, Medical Faculty, University of Cologne, Cologne 50931, Germany
| | - Alvise Schiavinato
- Center for Biochemistry, Medical Faculty, University of Cologne, Cologne 50931, Germany
| | - Haiyan Zhou
- National Institute of Health Research, Great Ormond Street Hospital Biomedical Research Centre, Genetics and Genomic Medicine Research and Teaching Department, Great Ormond Street Institute of Child Health, University College London, London WC1N 1EH, UK
| | - Sara Aguti
- Neurodegenerative Disease Department, UCL Queen Square Institute of Neurology, University College London, London WC1N 3BG, UK
| | - Yoram Nevo
- Institute of Pediatric Neurology, Schneider Children’s Medical Center of Israel, Petach Tikva, Israel, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv 69978, Israel
| | - Ichizo Nishino
- Department of Neuromuscular Research, National Institute of Neuroscience, National Center of Neurology and Psychiatry, Tokyo 187-8502, Japan
| | - Cecilia Jimenez-Mallebrera
- Laboratorio de Investigación Aplicada en Enfermedades Neuromusculares, Unidad de Patología Neuromuscular, Servicio de Neuropediatría, Institut de Recerca Sant Joan de Déu, Barcelona 08950, Spain
| | - Shireen R. Lamandé
- Department of Paediatrics, University of Melbourne, The Murdoch Children’s Research Institute, Parkville, VIC 3052, Australia
| | - Valérie Allamand
- INSERM, Institut de Myologie, Centre de Recherche en Myologie, Sorbonne Université, Paris 75013, France
| | - Francesca Gualandi
- Unit of Medical Genetics, Department of Medical Sciences and Department of Mother and Child, University Hospital S. Anna Ferrara, Ferrara 44121, Italy
| | - Alessandra Ferlini
- Unit of Medical Genetics, Department of Medical Sciences and Department of Mother and Child, University Hospital S. Anna Ferrara, Ferrara 44121, Italy
| | | | - Steve D. Wilton
- Centre for Molecular Medicine and Innovative Therapeutics, Health Futures Institute, Murdoch University; Centre for Neuromuscular and Neurological Disorders, Perron Institute for Neurological and Translational Science, The University of Western Australia, Nedlands, WA 6009, Australia
| | - Raimund Wagener
- Center for Biochemistry, Medical Faculty, University of Cologne, Cologne 50931, Germany
| | - Enrico Bertini
- Research Unit of Neuromuscular and Neurodegenerative Disorders, IRCCS Ospedale Pediatrico Bambino Gesù, Rome 00146, Italy
| | - Francesco Muntoni
- Dubowitz Neuromuscular Centre, UCL Great Ormond Street Institute of Child Health and Great Ormond Street Hospital for Children, London WC1N 1EH, UK
- National Institute of Health Research, Great Ormond Street Hospital Biomedical Research Centre, London WC1N 1EH, UK
| | - Carsten G. Bönnemann
- Neuromuscular and Neurogenetic Disorders of Childhood Section, Neurogenetics Branch, National Institute of Neurological Disorders and Stroke, NIH, Bethesda, MD 20892, USA
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8
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Bolduc V, Guirguis F, Lubben B, Trank L, Silverstein S, Brull A, Nalls M, Cheng J, Garrett L, Bönnemann CG. A humanized knock-in Col6a1 mouse recapitulates a deep-intronic splice-activating variant. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.03.21.581572. [PMID: 38585878 PMCID: PMC10996637 DOI: 10.1101/2024.03.21.581572] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/09/2024]
Abstract
Antisense therapeutics such as splice-modulating antisense oligonucleotides (ASOs) are promising tools to treat diseases caused by splice-altering intronic variants. However, their testing in animal models is hampered by the generally poor sequence conservation of the intervening sequences between human and other species. Here we aimed to model in the mouse a recurrent, deep-intronic, splice-activating, COL6A1 variant, associated with a severe form of Collagen VI-related muscular dystrophies (COL6-RDs), for the purpose of testing human-ready antisense therapeutics in vivo. The variant, c.930+189C>T, creates a donor splice site and inserts a 72-nt-long pseudoexon, which, when translated, acts in a dominant-negative manner, but which can be skipped with ASOs. We created a unique humanized mouse allele (designated as "h"), in which a 1.9 kb of the mouse genomic region encoding the amino-terminus (N-) of the triple helical (TH) domain of collagen a1(VI) was swapped for the human orthologous sequence. In addition, we also created an allele that carries the c.930+189C>T variant on the same humanized knock-in sequence (designated as "h+189T"). We show that in both models, the human exons are spliced seamlessly with the mouse exons to generate a chimeric mouse-human collagen a1(VI) protein. In homozygous Col6a1 h+189T/h+189T mice, the pseudoexon is expressed at levels comparable to those observed in heterozygous patients' muscle biopsies. While Col6a1h/h mice do not show any phenotype compared to wildtype animals, Col6a1 h/h+189T and Col6a1 h+189T/h+189T mice have smaller muscle masses and display grip strength deficits detectable as early as 4 weeks of age. The pathogenic h+189T humanized knock-in mouse allele thus recapitulates the pathogenic splicing defects seen in patients' biopsies and allows testing of human-ready precision antisense therapeutics aimed at skipping the pseudoexon. Given that the COL6A1 N-TH region is a hot-spot for COL6-RD variants, the humanized knock-in mouse model can be utilized as a template to introduce other COL6A1 pathogenic variants. This unique humanized mouse model thus represents a valuable tool for the development of antisense therapeutics for COL6-RDs.
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Affiliation(s)
- Véronique Bolduc
- Neuromuscular and Neurogenetic Disorders of Childhood Section, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD
| | - Fady Guirguis
- Neuromuscular and Neurogenetic Disorders of Childhood Section, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD
| | - Berit Lubben
- Neuromuscular and Neurogenetic Disorders of Childhood Section, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD
| | - Lindsey Trank
- Neuromuscular and Neurogenetic Disorders of Childhood Section, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD
| | - Sarah Silverstein
- Neuromuscular and Neurogenetic Disorders of Childhood Section, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD
| | - Astrid Brull
- Neuromuscular and Neurogenetic Disorders of Childhood Section, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD
| | - Matthew Nalls
- Neuromuscular and Neurogenetic Disorders of Childhood Section, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD
| | - Jun Cheng
- NHGRI Transgenic and Gene Editing Core, National Human Genome Research Institute, National Institutes of Health, Bethesda, MD
| | - Lisa Garrett
- NHGRI Transgenic and Gene Editing Core, National Human Genome Research Institute, National Institutes of Health, Bethesda, MD
| | - Carsten G. Bönnemann
- Neuromuscular and Neurogenetic Disorders of Childhood Section, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD
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9
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Xu S, Li L, Shen L, Wang X, Feng W, Liu S. Unexpected partial RNA deletion by two different novel COL6A2 mutations leads to Ullrich congenital muscular dystrophy. QJM 2024; 117:61-62. [PMID: 37738610 DOI: 10.1093/qjmed/hcad209] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/11/2023] [Indexed: 09/24/2023] Open
Affiliation(s)
- S Xu
- Department of Anesthesiology, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - L Li
- Medical Genetic Department, The Affiliated Hospital of Qingdao University, Qingdao, China
- Prenatal Diagnosis Center, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - L Shen
- Medical Genetic Department, The Affiliated Hospital of Qingdao University, Qingdao, China
- Prenatal Diagnosis Center, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - X Wang
- Medical Genetic Department, The Affiliated Hospital of Qingdao University, Qingdao, China
- Prenatal Diagnosis Center, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - W Feng
- Department of Anesthesiology, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - S Liu
- Medical Genetic Department, The Affiliated Hospital of Qingdao University, Qingdao, China
- Prenatal Diagnosis Center, The Affiliated Hospital of Qingdao University, Qingdao, China
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10
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Pascoe JE, Zygmunt A, Ehsan Z, Gurbani N. Sleep in pediatric neuromuscular disorders. Semin Pediatr Neurol 2023; 48:101092. [PMID: 38065635 DOI: 10.1016/j.spen.2023.101092] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2023] [Revised: 10/06/2023] [Accepted: 10/09/2023] [Indexed: 12/18/2023]
Abstract
Sleep disordered breathing (SDB) is prevalent among children with neuromuscular disorders (NMD). The combination of respiratory muscle weakness, altered drive, and chest wall distortion due to scoliosis make sleep a stressful state in this population. Symptomatology can range from absent to snoring, nocturnal awakenings, morning headaches, and excessive daytime sleepiness. Sequelae of untreated SDB includes cardiovascular effects, metabolic derangements, and neurocognitive concerns which can be compounded by those innate to the NMD. The clinician should have a low threshold for obtaining polysomnography and recognize the nuances of individual disorders due to disproportionately impacted muscle groups such as hypoventilation in ambulating patients from diaphragm weakness. Non-invasive or invasive ventilation are the mainstay of treatment. In this review we explore the diagnosis and treatment of SDB in children with various NMD.
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Affiliation(s)
- John E Pascoe
- Division of Pulmonary and Sleep Medicine, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, United States; Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH, United States.
| | - Alexander Zygmunt
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH, United States; Division of Neurology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, United States
| | - Zarmina Ehsan
- Division of Pulmonary and Sleep Medicine, Children's Mercy-Kansas City, Kansas City, MO, United States; Department of Pediatrics, University of Missouri-Kansas City School of Medicine, Kansas City, MO, United States
| | - Neepa Gurbani
- Division of Pulmonary and Sleep Medicine, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, United States; Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH, United States
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11
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Barington M, Dunø M, Birkedal U, Vissing J, Born AP, Krag T, Hansen TVO, Østergaard E. Homozygous splice variant (c.1741-6G>A) of the COL6A1 gene in three patients with Ullrich congenital muscular dystrophy. Neuromuscul Disord 2023; 33:539-545. [PMID: 37315421 DOI: 10.1016/j.nmd.2023.05.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2023] [Revised: 05/09/2023] [Accepted: 05/22/2023] [Indexed: 06/16/2023]
Abstract
The three major collagen VI genes: COL6A1, COL6A2, and COL6A3 encode microfibrillar components of extracellular matrices in multiple tissues including muscles and tendons. Pathogenic variants in the collagen VI genes cause collagen VI-related dystrophies representing a continuum of conditions from Bethlem myopathy at the milder end to Ullrich congenital muscular dystrophy at the more severe end. Here we describe a pathogenic variant in the COL6A1 gene (NM_001848.3; c.1741-6G>A) found in homozygosity in three patients with Ullrich congenital muscular dystrophy. The patients suffered from severe muscle impairment characterised by proximal weakness, distal hyperlaxity, joint contractures, wheelchair-dependency, and use of nocturnal non-invasive ventilation. The pathogenicity was verified by RNA analyses showing that the variant induced aberrant splicing leading to a frameshift and loss of function. The analyses were in line with immunocytochemistry studies of patient-derived skin fibroblasts and muscle tissue demonstrating impaired secretion of collagen VI into the extracellular matrix. Thereby, we add the variant c.1741-6G>A to the list of pathogenic, recessive, splice variants in COL6A1 causing Ullrich congenital muscular dystrophy. The variant is listed in ClinVar as of "uncertain significance" and "likely benign" and may presumably have been overlooked in other patients.
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Affiliation(s)
- Maria Barington
- Department of Genetics, Rigshospitalet, Blegdamsvej 9, 2100 Copenhagen, Denmark.
| | - Morten Dunø
- Department of Genetics, Rigshospitalet, Blegdamsvej 9, 2100 Copenhagen, Denmark
| | - Ulf Birkedal
- Department of Genetics, Rigshospitalet, Blegdamsvej 9, 2100 Copenhagen, Denmark
| | - John Vissing
- Copenhagen Neuromuscular Center, Rigshospitalet, Blegdamsvej 9, 2100 Copenhagen, Denmark
| | - Alfred Peter Born
- Department of Paediatrics and Adolescent Medicine, Rigshospitalet, Blegdamsvej 9, 2100 Copenhagen, Denmark
| | - Thomas Krag
- Copenhagen Neuromuscular Center, Rigshospitalet, Blegdamsvej 9, 2100 Copenhagen, Denmark
| | - Thomas van Overeem Hansen
- Department of Genetics, Rigshospitalet, Blegdamsvej 9, 2100 Copenhagen, Denmark; Department of Clinical Medicine, University of Copenhagen, Blegdamsvej 3, 2200 Copenhagen, Denmark
| | - Elsebet Østergaard
- Department of Genetics, Rigshospitalet, Blegdamsvej 9, 2100 Copenhagen, Denmark; Department of Clinical Medicine, University of Copenhagen, Blegdamsvej 3, 2200 Copenhagen, Denmark
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12
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Tesoriero C, Greco F, Cannone E, Ghirotto F, Facchinello N, Schiavone M, Vettori A. Modeling Human Muscular Dystrophies in Zebrafish: Mutant Lines, Transgenic Fluorescent Biosensors, and Phenotyping Assays. Int J Mol Sci 2023; 24:8314. [PMID: 37176020 PMCID: PMC10179009 DOI: 10.3390/ijms24098314] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2023] [Revised: 04/28/2023] [Accepted: 05/03/2023] [Indexed: 05/15/2023] Open
Abstract
Muscular dystrophies (MDs) are a heterogeneous group of myopathies characterized by progressive muscle weakness leading to death from heart or respiratory failure. MDs are caused by mutations in genes involved in both the development and organization of muscle fibers. Several animal models harboring mutations in MD-associated genes have been developed so far. Together with rodents, the zebrafish is one of the most popular animal models used to reproduce MDs because of the high level of sequence homology with the human genome and its genetic manipulability. This review describes the most important zebrafish mutant models of MD and the most advanced tools used to generate and characterize all these valuable transgenic lines. Zebrafish models of MDs have been generated by introducing mutations to muscle-specific genes with different genetic techniques, such as (i) N-ethyl-N-nitrosourea (ENU) treatment, (ii) the injection of specific morpholino, (iii) tol2-based transgenesis, (iv) TALEN, (v) and CRISPR/Cas9 technology. All these models are extensively used either to study muscle development and function or understand the pathogenetic mechanisms of MDs. Several tools have also been developed to characterize these zebrafish models by checking (i) motor behavior, (ii) muscle fiber structure, (iii) oxidative stress, and (iv) mitochondrial function and dynamics. Further, living biosensor models, based on the expression of fluorescent reporter proteins under the control of muscle-specific promoters or responsive elements, have been revealed to be powerful tools to follow molecular dynamics at the level of a single muscle fiber. Thus, zebrafish models of MDs can also be a powerful tool to search for new drugs or gene therapies able to block or slow down disease progression.
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Affiliation(s)
- Chiara Tesoriero
- Department of Biotechnology, University of Verona, 37134 Verona, Italy; (C.T.); (F.G.); (F.G.); (A.V.)
| | - Francesca Greco
- Department of Biotechnology, University of Verona, 37134 Verona, Italy; (C.T.); (F.G.); (F.G.); (A.V.)
| | - Elena Cannone
- Department of Molecular and Translational Medicine, University of Brescia, 25123 Brescia, Italy;
| | - Francesco Ghirotto
- Department of Biotechnology, University of Verona, 37134 Verona, Italy; (C.T.); (F.G.); (F.G.); (A.V.)
| | - Nicola Facchinello
- Neuroscience Institute, Italian National Research Council (CNR), 35131 Padua, Italy
| | - Marco Schiavone
- Department of Molecular and Translational Medicine, University of Brescia, 25123 Brescia, Italy;
| | - Andrea Vettori
- Department of Biotechnology, University of Verona, 37134 Verona, Italy; (C.T.); (F.G.); (F.G.); (A.V.)
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13
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Di Martino A, Cescon M, D’Agostino C, Schilardi F, Sabatelli P, Merlini L, Faldini C. Collagen VI in the Musculoskeletal System. Int J Mol Sci 2023; 24:5095. [PMID: 36982167 PMCID: PMC10049728 DOI: 10.3390/ijms24065095] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2023] [Revised: 02/26/2023] [Accepted: 03/01/2023] [Indexed: 03/10/2023] Open
Abstract
Collagen VI exerts several functions in the tissues in which it is expressed, including mechanical roles, cytoprotective functions with the inhibition of apoptosis and oxidative damage, and the promotion of tumor growth and progression by the regulation of cell differentiation and autophagic mechanisms. Mutations in the genes encoding collagen VI main chains, COL6A1, COL6A2 and COL6A3, are responsible for a spectrum of congenital muscular disorders, namely Ullrich congenital muscular dystrophy (UCMD), Bethlem myopathy (BM) and myosclerosis myopathy (MM), which show a variable combination of muscle wasting and weakness, joint contractures, distal laxity, and respiratory compromise. No effective therapeutic strategy is available so far for these diseases; moreover, the effects of collagen VI mutations on other tissues is poorly investigated. The aim of this review is to outline the role of collagen VI in the musculoskeletal system and to give an update about the tissue-specific functions revealed by studies on animal models and from patients' derived samples in order to fill the knowledge gap between scientists and the clinicians who daily manage patients affected by collagen VI-related myopathies.
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Affiliation(s)
- Alberto Di Martino
- I Orthopedic and Traumatology Department, IRCCS Istituto Ortopedico Rizzoli, 40136 Bologna, Italy
- Department of Biomedical and Neuromotor Science, DIBINEM, University of Bologna, 40136 Bologna, Italy
| | - Matilde Cescon
- Department of Molecular Medicine, University of Padova, 35131 Padova, Italy
| | - Claudio D’Agostino
- I Orthopedic and Traumatology Department, IRCCS Istituto Ortopedico Rizzoli, 40136 Bologna, Italy
- Department of Biomedical and Neuromotor Science, DIBINEM, University of Bologna, 40136 Bologna, Italy
| | - Francesco Schilardi
- I Orthopedic and Traumatology Department, IRCCS Istituto Ortopedico Rizzoli, 40136 Bologna, Italy
- Department of Biomedical and Neuromotor Science, DIBINEM, University of Bologna, 40136 Bologna, Italy
| | - Patrizia Sabatelli
- Unit of Bologna, CNR-Institute of Molecular Genetics “Luigi Luca Cavalli-Sforza”, 40136 Bologna, Italy
- IRCCS Istituto Ortopedico Rizzoli, 40136 Bologna, Italy
| | - Luciano Merlini
- Department of Biomedical and Neuromotor Science, DIBINEM, University of Bologna, 40136 Bologna, Italy
| | - Cesare Faldini
- I Orthopedic and Traumatology Department, IRCCS Istituto Ortopedico Rizzoli, 40136 Bologna, Italy
- Department of Biomedical and Neuromotor Science, DIBINEM, University of Bologna, 40136 Bologna, Italy
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14
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KWONG AKY, ZHANG Y, HO RSL, GAO Y, LING X, TSANG MHY, LUK HM, CHUNG BHY, BÖNNEMANN CG, JAVED A, CHAN SHS. COLLAGEN VI-RELATED MYOPATHIES: CLINICAL VARIABILITY, PHENOTYPE-GENOTYPE CORRELATION AND EXPLORATORY TRANSCRIPTOME STUDY. Neuromuscul Disord 2023; 33:371-381. [PMID: 37023487 DOI: 10.1016/j.nmd.2023.03.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2022] [Revised: 02/13/2023] [Accepted: 03/06/2023] [Indexed: 03/13/2023]
Abstract
Collagen VI-related myopathies are a group of disorders that cause muscle weakness and joint contractures with significant variability in disease severity among patients. Here we report the clinical and genetic characteristics of 13 Chinese patients. Detailed histological, radiological and muscle transcriptomic evaluations were also conducted for selected representative patients. Across the cohort, fifteen putative disease causal variants were identified in three genes encoding collagen VI subunits, COL6A1 (n=6), COL6A2 (n=5), and COL6A3 (n=4). Most of these variants (12/15, 80%) were dominant negative and occurred at the triple helical domain. The rest (3/15, 20%) were located at the C-terminus. Two previously unreported variants, an in-frame mutation (COL6A1:c.1084_1092del) and a missense mutation (COL6A2:c.811G>C), were also noted. The transcriptome data from the muscle biopsies of two patients in the study with dominant negative mutations [COL6A2:c.811G>C and COL6A1:c.930+189C>T] supports the accepted aetiology of Collagen VI myopathy as dysfunction of the extracellular matrix. It also suggests there are perturbations to skeletal muscle differentiation and skeletal system development. It should be noted that although the phenotypes of patients can be mostly explained by the position and dominant-negative effect of the variants, exceptions and variability still exist and have to be reckoned with. This study provides valuable data explaining the varying severity of phenotypes among ethnically Chinese patients.
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15
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Bethlem Myopathy (Collagen VI-Related Dystrophies): A Retrospective Cohort Study on Musculoskeletal Pathologies and Clinical Course. J Pediatr Orthop 2023; 43:e163-e167. [PMID: 36607927 DOI: 10.1097/bpo.0000000000002283] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
BACKGROUND Collagen VI-related myopathies with pathologic COL6A1, COL6A2, and COL6A3 variants manifest as a phenotypic continuum of rare disorders, including Bethlem myopathy (BM), characterized by early onset muscle weakness, proximal joint contractures, and distal joint laxity. Herein we discuss the concomitant orthopedic manifestations of BM, potential management strategies, and patient outcomes. METHODS An IRB-approved retrospective cohort study (n=23) from 2 pediatric institutions with a confirmed diagnosis of BM. Charts were reviewed for demographic data, age of disease presentation and diagnosis, COL6 genotype, diagnosis method, ambulation status, need for assistance, musculoskeletal abnormalities, other systemic comorbidities, advanced imaging and screening diagnostics, previous surgical interventions, and progression of the disease. RESULTS The mean age was 11.65 years (range 3 to 19 y). Mean age at initial presentation with symptoms was 4.18 years old, whereas diagnosis was delayed until 8.22 years old on average. Muscle weakness was the most common presenting symptom (65.2%), and 73.9% of patients required some use of assistive or mobility devices. Overall, 30.4% of patients were diagnosed with scoliosis; 57.1% required operative intervention for their scoliosis; 43.5% of patients had acetabular dysplasia; 10% required open reduction of a dislocated hip; 10% required closed reduction with hip spica application; 10% required bilateral periacetabular osteotomies for instability; 91.3% of patients developed foot and ankle deformities; 33.3% of patients underwent posteromedial-lateral equinovarus releases; 28.6% required an Achilles tendon lengthening, and 86.9% of patients had muscle tendon contractures, the most common locations being the ankle (55%) and elbow (40%). CONCLUSION Although often less severe than other more common neuropathies and myopathies like Charcot-Marie-Tooth disease and Duchenne muscular dystrophy, BM does lead to progressive musculoskeletal deformity and disability. Its relative rarity makes it less familiar to providers and likely contributes to delays in diagnosis. Scoliosis, hip dysplasia, and equinus and varus ankle deformities are the most common musculoskeletal deformities. Physicians and surgeons should appropriately counsel patients and families about the clinical course of this disorder and the potential need for mobility assistance or surgical procedures. LEVEL OF EVIDENCE III, Prognostic. study.
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16
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Serjanov D, Hyde DR. Extracellular Matrix: The Unexplored Aspects of Retinal Pathologies and Regeneration. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2023; 1415:309-317. [PMID: 37440050 DOI: 10.1007/978-3-031-27681-1_45] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/14/2023]
Abstract
Nearly a billion people worldwide are affected by vision-impairing conditions, with retinal degenerative diseases being a major cause of blindness. Unfortunately, such diseases are often permanent and progressive, resulting in further degeneration and loss of sight, due to the human retina possessing little, if any, regenerative capacity. Despite numerous efforts and great progress being made to understand the molecular mechanisms of these diseases and possible therapies, the majority of investigations focused on cell-intrinsic factors. However, the microenvironment surrounding retinal cells throughout these processes also plays an important role, though our current understanding of its involvement remains limited. Here we present a brief overview of the current state of the field of extracellular matrix studies within the retina and its potential roles in retinal diseases and potential therapeutic approaches.
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Affiliation(s)
- Dmitri Serjanov
- Department of Biological Sciences, University of Notre Dame, Notre Dame, IN, USA
| | - David R Hyde
- Department of Biological Sciences, University of Notre Dame, Notre Dame, IN, USA.
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17
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Wei H, Bi Y, Wang Y, Zhao Q, Zhang R, Li J, Bao J. Serum bone remodeling parameters and transcriptome profiling reveal abnormal bone metabolism associated with keel bone fractures in laying hens. Poult Sci 2022; 102:102438. [PMID: 36780704 PMCID: PMC9947423 DOI: 10.1016/j.psj.2022.102438] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2022] [Revised: 12/08/2022] [Accepted: 12/14/2022] [Indexed: 12/23/2022] Open
Abstract
Keel bone fractures affect welfare, health, and production performance in laying hens. A total of one hundred and twenty 35-wk-old Hy-line Brown laying hens with normal keel (NK) bone were housed in furnished cages and studied for ten weeks to investigate the underlying mechanism of keel bone fractures. At 45 wk of age, the keel bone state of birds was assessed by palpation and X-ray, and laying hens were recognized as NK and fractured keel (FK) birds according to the presence or absence of fractures in keel bone. The serum samples of 10 NK and 10 FK birds were collected to determine bone metabolism-related indexes and slaughtered to collect keel bones for RNA-sequencing (RNA-seq), Micro-CT, and histopathological staining analyses. The results showed that the concentrations of Ca, phosphorus, calcitonin, 25-hydroxyvitamin D3, and osteocalcin and activities of alkaline phosphatase and tartrate-resistant acid phosphatase (TRAP) in serum samples of FK birds were lower than those of NK birds (P < 0.05), but the concentrations of parathyroid hormone, osteoprotegerin, and corticosterone in serum samples of FK birds were higher than those of NK birds (P < 0.05). TRAP staining displayed that FK bone increased the number of osteoclasts (P < 0.05). Micro-CT analysis indicated that FK bone decreased bone mineral density (P < 0.05). Transcriptome sequencing analysis of NK and FK bones identified 214 differentially expressed genes (DEGs) (|log2FoldChange| > 1, P < 0.05), among which 88 were upregulated and 126 downregulated. Kyoto Encyclopedia of Genes and Genomes pathway (KEGG) analysis indicated that 14 DEGs related to skeletal muscle movement and bone Ca transport (COL6A1, COL6A2, COL6A3, PDGFA, MYLK2, EGF, CAV3, ADRA1D, BDKRB1, CACNA1S, TNN, TNNC1, TNNC2, and RYR3) were enriched in focal adhesion and Ca signaling pathway, regulating bone quality. This study suggests that abnormal bone metabolism related to keel bone fractures is possibly responded to fracture healing in laying hens.
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Affiliation(s)
- Haidong Wei
- College of Life Science, Northeast Agricultural University, 150030 Harbin, China
| | - Yanju Bi
- College of Animal Science and Technology, Northeast Agricultural University, 150030 Harbin, China
| | - Yulai Wang
- College of Animal Science and Technology, Northeast Agricultural University, 150030 Harbin, China
| | - Qian Zhao
- College of Animal Science and Technology, Northeast Agricultural University, 150030 Harbin, China
| | - Runxiang Zhang
- College of Animal Science and Technology, Northeast Agricultural University, 150030 Harbin, China,Key Laboratory of Chicken Genetics and Breeding, Ministry of Agriculture and Rural Affairs, Harbin 150030, China
| | - Jianhong Li
- College of Life Science, Northeast Agricultural University, 150030 Harbin, China
| | - Jun Bao
- College of Animal Science and Technology, Northeast Agricultural University, 150030 Harbin, China; Key Laboratory of Chicken Genetics and Breeding, Ministry of Agriculture and Rural Affairs, Harbin 150030, China.
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18
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Schüler SC, Liu Y, Dumontier S, Grandbois M, Le Moal E, Cornelison DDW, Bentzinger CF. Extracellular matrix: Brick and mortar in the skeletal muscle stem cell niche. Front Cell Dev Biol 2022; 10:1056523. [PMID: 36523505 PMCID: PMC9745096 DOI: 10.3389/fcell.2022.1056523] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2022] [Accepted: 11/03/2022] [Indexed: 11/30/2022] Open
Abstract
The extracellular matrix (ECM) is an interconnected macromolecular scaffold occupying the space between cells. Amongst other functions, the ECM provides structural support to tissues and serves as a microenvironmental niche that conveys regulatory signals to cells. Cell-matrix adhesions, which link the ECM to the cytoskeleton, are dynamic multi-protein complexes containing surface receptors and intracellular effectors that control various downstream pathways. In skeletal muscle, the most abundant tissue of the body, each individual muscle fiber and its associated muscle stem cells (MuSCs) are surrounded by a layer of ECM referred to as the basal lamina. The core scaffold of the basal lamina consists of self-assembling polymeric laminins and a network of collagens that tether proteoglycans, which provide lateral crosslinking, establish collateral associations with cell surface receptors, and serve as a sink and reservoir for growth factors. Skeletal muscle also contains the fibrillar collagenous interstitial ECM that plays an important role in determining tissue elasticity, connects the basal laminae to each other, and contains matrix secreting mesenchymal fibroblast-like cell types and blood vessels. During skeletal muscle regeneration fibroblast-like cell populations expand and contribute to the transitional fibronectin-rich regenerative matrix that instructs angiogenesis and MuSC function. Here, we provide a comprehensive overview of the role of the skeletal muscle ECM in health and disease and outline its role in orchestrating tissue regeneration and MuSC function.
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Affiliation(s)
- Svenja C. Schüler
- Département de Pharmacologie-Physiologie, Faculté de Médecine et des Sciences de la Santé, Institut de Pharmacologie de Sherbrooke, Centre de Recherche du Centre Hospitalier Universitaire de Sherbrooke, Université de Sherbrooke, Sherbrooke, QC, Canada
| | - Yuguo Liu
- Département de Pharmacologie-Physiologie, Faculté de Médecine et des Sciences de la Santé, Institut de Pharmacologie de Sherbrooke, Centre de Recherche du Centre Hospitalier Universitaire de Sherbrooke, Université de Sherbrooke, Sherbrooke, QC, Canada
| | - Simon Dumontier
- Département de Pharmacologie-Physiologie, Faculté de Médecine et des Sciences de la Santé, Institut de Pharmacologie de Sherbrooke, Centre de Recherche du Centre Hospitalier Universitaire de Sherbrooke, Université de Sherbrooke, Sherbrooke, QC, Canada
| | - Michel Grandbois
- Département de Pharmacologie-Physiologie, Faculté de Médecine et des Sciences de la Santé, Institut de Pharmacologie de Sherbrooke, Centre de Recherche du Centre Hospitalier Universitaire de Sherbrooke, Université de Sherbrooke, Sherbrooke, QC, Canada
| | - Emmeran Le Moal
- Département de Pharmacologie-Physiologie, Faculté de Médecine et des Sciences de la Santé, Institut de Pharmacologie de Sherbrooke, Centre de Recherche du Centre Hospitalier Universitaire de Sherbrooke, Université de Sherbrooke, Sherbrooke, QC, Canada
| | - DDW Cornelison
- Division of Biological Sciences Christopher S. Bond Life Sciences Center, University of Missouri, Columbia, MO, United States
| | - C. Florian Bentzinger
- Département de Pharmacologie-Physiologie, Faculté de Médecine et des Sciences de la Santé, Institut de Pharmacologie de Sherbrooke, Centre de Recherche du Centre Hospitalier Universitaire de Sherbrooke, Université de Sherbrooke, Sherbrooke, QC, Canada
- *Correspondence: C. Florian Bentzinger,
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19
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The Role of Type VI Collagen in Alveolar Bone. Int J Mol Sci 2022; 23:ijms232214347. [PMID: 36430826 PMCID: PMC9697549 DOI: 10.3390/ijms232214347] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2022] [Revised: 11/15/2022] [Accepted: 11/16/2022] [Indexed: 11/22/2022] Open
Abstract
Many studies have been conducted to elucidate the role of Type VI collagen in muscle and tendon, however, its role in oral tissues remains unclear. In this study, an α2(VI) deficient mouse (Col6α2-KO) model was used to examine the role of Type VI collagen in oral tissues. Tissue volume and mineral density were measured in oral tissues by µCT. Proteome analysis was performed using protein extracted from alveolar bone. In addition, alveolar bone was evaluated with a periodontitis induced model. µCT analysis showed the Col6α2-KO mice had less volume of alveolar bone, dentin and dental pulp, while the width of periodontal ligament (PDL) was greater than WT. The mineral density in alveolar bone and dentin were elevated in Col6α2-KO mice compared with WT. Our proteome analysis showed significant changes in proteins related to ECM organization and elevation of proteins associated with biomineralization in the Col6α2-KO mice. In induced periodontitis, Col6α2-KO mice had greater alveolar bone loss compared with WT. In conclusion, Type VI collagen has a role in controlling biomineralization in alveolar bone and that changes in the ECM of alveolar bone could be associated with greater bone loss due to periodontitis.
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20
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Akoto T, Li JJ, Estes AJ, Karamichos D, Liu Y. The Underlying Relationship between Keratoconus and Down Syndrome. Int J Mol Sci 2022; 23:ijms231810796. [PMID: 36142709 PMCID: PMC9503764 DOI: 10.3390/ijms231810796] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2022] [Revised: 09/13/2022] [Accepted: 09/14/2022] [Indexed: 11/16/2022] Open
Abstract
Keratoconus (KC) is one of the most significant corneal disorders worldwide, characterized by the progressive thinning and cone-shaped protrusion of the cornea, which can lead to severe visual impairment. The prevalence of KC varies greatly by ethnic groups and geographic regions and has been observed to be higher in recent years. Although studies reveal a possible link between KC and genetics, hormonal disturbances, environmental factors, and specific comorbidities such as Down Syndrome (DS), the exact cause of KC remains unknown. The incidence of KC ranges from 0% to 71% in DS patients, implying that as the worldwide population of DS patients grows, the number of KC patients may continue to rise significantly. As a result, this review aims to shed more light on the underlying relationship between KC and DS by examining the genetics relating to the cornea, central corneal thickness (CCT), and mechanical forces on the cornea, such as vigorous eye rubbing. Furthermore, this review discusses KC diagnostic and treatment strategies that may help detect KC in DS patients, as well as the available DS mouse models that could be used in modeling KC in DS patients. In summary, this review will provide improved clinical knowledge of KC in DS patients and promote additional KC-related research in these patients to enhance their eyesight and provide suitable treatment targets.
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Affiliation(s)
- Theresa Akoto
- Department of Cellular Biology & Anatomy, Augusta University, Augusta, GA 30912, USA
| | - Jiemin J. Li
- Department of Cellular Biology & Anatomy, Augusta University, Augusta, GA 30912, USA
| | - Amy J. Estes
- Department of Ophthalmology, Augusta University, Augusta, GA 30912, USA
- James & Jean Culver Vision Discovery Institute, Medical College of Georgia, Augusta University, Augusta, GA 30912, USA
| | - Dimitrios Karamichos
- North Texas Eye Research Institute, University of North Texas Health Science Center, Fort Worth, TX 76107, USA
- Department of Pharmaceutical Sciences, University of North Texas Health Science Center, Fort Worth, TX 76107, USA
- Department of Pharmacology and Neuroscience, University of North Texas Health Science Center, Fort Worth, TX 76107, USA
| | - Yutao Liu
- Department of Cellular Biology & Anatomy, Augusta University, Augusta, GA 30912, USA
- James & Jean Culver Vision Discovery Institute, Medical College of Georgia, Augusta University, Augusta, GA 30912, USA
- Center for Biotechnology and Genomic Medicine, Medical College of Georgia, Augusta University, Augusta, GA 30912, USA
- Correspondence: ; Tel.: +1-706-721-2015
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21
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Tonelotto V, Consorti C, Facchinello N, Trapani V, Sabatelli P, Giraudo C, Spizzotin M, Cescon M, Bertolucci C, Bonaldo P. Collagen VI ablation in zebrafish causes neuromuscular defects during developmental and adult stages. Matrix Biol 2022; 112:39-61. [PMID: 35961424 DOI: 10.1016/j.matbio.2022.08.004] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2022] [Revised: 07/21/2022] [Accepted: 08/08/2022] [Indexed: 10/15/2022]
Abstract
Collagen VI (COL6) is an extracellular matrix protein exerting multiple functions in different tissues. In humans, mutations of COL6 genes cause rare inherited congenital disorders, primarily affecting skeletal muscles and collectively known as COL6-related myopathies, for which no cure is available yet. In order to get insights into the pathogenic mechanisms underlying COL6-related diseases, diverse animal models were produced. However, the roles exerted by COL6 during embryogenesis remain largely unknown. Here, we generated the first zebrafish COL6 knockout line through CRISPR/Cas9 site-specific mutagenesis of the col6a1 gene. Phenotypic characterization during embryonic and larval development revealed that lack of COL6 leads to neuromuscular defects and motor dysfunctions, together with distinctive alterations in the three-dimensional architecture of craniofacial cartilages. These phenotypic features were maintained in adult col6a1 null fish, which displayed defective muscle organization and impaired swimming capabilities. Moreover, col6a1 null fish showed autophagy defects and organelle abnormalities at both embryonic and adult stages, thus recapitulating the main features of patients affected by COL6-related myopathies. Mechanistically, lack of COL6 led to increased BMP signaling, and direct inhibition of BMP activity ameliorated the locomotor col6a1 null embryos. Finally performance of, treatment with salbutamol, a β2-adrenergic receptor agonist, elicited a significant amelioration of the neuromuscular and motility defects of col6a1 null fish embryos. Altogether, these findings indicate that this newly generated zebrafish col6a1 null line is a valuable in vivo tool to model COL6-related myopathies and suitable for drug screenings aimed at addressing the quest for effective therapeutic strategies for these disorders.
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Affiliation(s)
| | - Chiara Consorti
- Department of Molecular Medicine, University of Padova, 35131 Padova, Italy
| | - Nicola Facchinello
- Department of Molecular Medicine, University of Padova, 35131 Padova, Italy
| | - Valeria Trapani
- Department of Molecular Medicine, University of Padova, 35131 Padova, Italy
| | - Patrizia Sabatelli
- CNR - Institute of Molecular Genetics "Luigi Luca Cavalli-Sforza", Unit of Bologna, 40136, Bologna, Italy; IRCCS Istituto Ortopedico Rizzoli, 40136 Bologna, Italy
| | - Chiara Giraudo
- Department of Medicine, Unit of Advanced Clinical and Translational Imaging, University of Padova, 35128 Padova, Italy
| | - Marianna Spizzotin
- Department of Molecular Medicine, University of Padova, 35131 Padova, Italy
| | - Matilde Cescon
- Department of Molecular Medicine, University of Padova, 35131 Padova, Italy
| | - Cristiano Bertolucci
- Department of Life Sciences and Biotechnology, University of Ferrara, 44121 Ferrara, Italy
| | - Paolo Bonaldo
- Department of Molecular Medicine, University of Padova, 35131 Padova, Italy; CRIBI Biotechnology Center, University of Padova, 35131 Padova, Italy.
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22
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Carraro E, Rossi L, Maghin E, Canton M, Piccoli M. 3D in vitro Models of Pathological Skeletal Muscle: Which Cells and Scaffolds to Elect? Front Bioeng Biotechnol 2022; 10:941623. [PMID: 35898644 PMCID: PMC9313593 DOI: 10.3389/fbioe.2022.941623] [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: 05/11/2022] [Accepted: 06/21/2022] [Indexed: 12/29/2022] Open
Abstract
Skeletal muscle is a fundamental tissue of the human body with great plasticity and adaptation to diseases and injuries. Recreating this tissue in vitro helps not only to deepen its functionality, but also to simulate pathophysiological processes. In this review we discuss the generation of human skeletal muscle three-dimensional (3D) models obtained through tissue engineering approaches. First, we present an overview of the most severe myopathies and the two key players involved: the variety of cells composing skeletal muscle tissue and the different components of its extracellular matrix. Then, we discuss the peculiar characteristics among diverse in vitro models with a specific focus on cell sources, scaffold composition and formulations, and fabrication techniques. To conclude, we highlight the efficacy of 3D models in mimicking patient-specific myopathies, deepening muscle disease mechanisms or investigating possible therapeutic effects.
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Affiliation(s)
- Eugenia Carraro
- Istituto di Ricerca Pediatrica Città della Speranza, Padova, Italy
- Department of Biomedical Sciences, University of Padova, Padova, Italy
| | - Lucia Rossi
- Istituto di Ricerca Pediatrica Città della Speranza, Padova, Italy
| | - Edoardo Maghin
- Istituto di Ricerca Pediatrica Città della Speranza, Padova, Italy
| | - Marcella Canton
- Istituto di Ricerca Pediatrica Città della Speranza, Padova, Italy
- Department of Biomedical Sciences, University of Padova, Padova, Italy
| | - Martina Piccoli
- Istituto di Ricerca Pediatrica Città della Speranza, Padova, Italy
- *Correspondence: Martina Piccoli,
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23
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Loreti M, Sacco A. The jam session between muscle stem cells and the extracellular matrix in the tissue microenvironment. NPJ Regen Med 2022; 7:16. [PMID: 35177651 PMCID: PMC8854427 DOI: 10.1038/s41536-022-00204-z] [Citation(s) in RCA: 28] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2020] [Accepted: 12/14/2021] [Indexed: 12/21/2022] Open
Abstract
Skeletal muscle requires a highly orchestrated coordination between multiple cell types and their microenvironment to exert its function and to maintain its homeostasis and regenerative capacity. Over the past decades, significant advances, including lineage tracing and single-cell RNA sequencing, have contributed to identifying multiple muscle resident cell populations participating in muscle maintenance and repair. Among these populations, muscle stem cells (MuSC), also known as satellite cells, in response to stress or injury, are able to proliferate, fuse, and form new myofibers to repair the damaged tissue. These cells reside adjacent to the myofiber and are surrounded by a specific and complex microenvironment, the stem cell niche. Major components of the niche are extracellular matrix (ECM) proteins, able to instruct MuSC behavior. However, during aging and muscle-associated diseases, muscle progressively loses its regenerative ability, in part due to a dysregulation of ECM components. This review provides an overview of the composition and importance of the MuSC microenvironment. We discuss relevant ECM proteins and how their mutations or dysregulation impact young and aged muscle tissue or contribute to diseases. Recent discoveries have improved our knowledge about the ECM composition of skeletal muscle, which has helped to mimic the architecture of the stem cell niche and improved the regenerative capacity of MuSC. Further understanding about extrinsic signals from the microenvironment controlling MuSC function and innovative technologies are still required to develop new therapies to improve muscle repair.
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Affiliation(s)
- Mafalda Loreti
- Development, Aging and Regeneration Program, Sanford Burnham Prebys Medical Discovery Institute, 10901N Torrey Pines Rd, La Jolla, CA, 92037, USA
| | - Alessandra Sacco
- Development, Aging and Regeneration Program, Sanford Burnham Prebys Medical Discovery Institute, 10901N Torrey Pines Rd, La Jolla, CA, 92037, USA.
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24
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Han Y, Wu J, Gong Z, Zhou Y, Li H, Chen Y, Qian Q. Identification and development of the novel 7-genes diagnostic signature by integrating multi cohorts based on osteoarthritis. Hereditas 2022; 159:10. [PMID: 35093162 PMCID: PMC8801091 DOI: 10.1186/s41065-022-00226-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2021] [Accepted: 12/29/2021] [Indexed: 11/10/2022] Open
Abstract
Abstract
Background
A chronic progressive degenerative joint disease, such as osteoarthritis (OA) is positively related to age. The medical economy is facing a major burden, because of the high disability rate seen in patients with OA. Therefore, to prevent and treat OA, exploring the diagnostic biomarkers of OA will be of great significance.
Methods
Differentially expressed genes (DEGs) were obtained from the Gene Expression Omnibus database using the RobustRankAggreg R package, and a protein–protein interaction network was constructed. The module was obtained from Cytoscape, and the four algorithms of degree, MNC, closeness, and MCC in CytoHubba were used to identify the hub genes. A diagnostic model was constructed using Support Vector Machines (SVM), and the ability of the model to predict was evaluated by other cohorts.
Results
From normal and OA samples, 136 DEGs were identified, out of which 45 were downregulated in the normal group and 91 were upregulated in the OA group. These genes were associated with the extracellular matrix-receptor interactions, the PI3K-Akt signaling pathway, and the protein digestion and absorption pathway, as per a functional enrichment analysis. Finally, we identified the 7 hub genes (COL6A3, COL1A2, COL1A1, MMP2, COL3A1, POST, and FN1). These genes have important roles and are widely involved in the immune response, apoptosis, inflammation, and bone development. These 7 genes were used to construct a diagnostic model by SVM, and it performed well in different cohorts. Additionally, we verified the methylation expression of these hub genes.
Conclusions
The 7-genes signature can be used for the diagnosis of OA and can provide new ideas in the clinical decision-making for patients with OA.
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25
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Sabatelli P, Merlini L, Di Martino A, Cenni V, Faldini C. Early Morphological Changes of the Rectus Femoris Muscle and Deep Fascia in Ullrich Congenital Muscular Dystrophy. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:ijerph19031252. [PMID: 35162283 PMCID: PMC8834967 DOI: 10.3390/ijerph19031252] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/07/2021] [Revised: 01/07/2022] [Accepted: 01/18/2022] [Indexed: 11/16/2022]
Abstract
Ullrich congenital muscular dystrophy (UCMD) is a severe form of muscular dystrophy caused by the loss of function of collagen VI, a critical component of the muscle-tendon matrix. Magnetic resonance imaging of UCMD patients’ muscles shows a peculiar rim of abnormal signal at the periphery of each muscle, and a relative sparing of the internal part. The mechanism/s involved in the early fat substitution of muscle fiber at the periphery of muscles remain elusive. We studied a muscle biopsy of the rectus femoris/deep fascia (DF) of a 3-year-old UCMD patient, with a homozygous mutation in the COL6A2 gene. By immunohistochemical and ultrastructural analysis, we found a marked fatty infiltration at the interface of the muscle with the epimysium/DF and an atrophic phenotype, primarily in fast-twitch fibers, which has never been reported before. An unexpected finding was the widespread increase of interstitial cells with long cytoplasmic processes, consistent with the telocyte phenotype. Our study documents for the first time in a muscle biopsy the peculiar pattern of outside-in muscle degeneration followed by fat substitution as already shown by muscle imaging, and an increase of telocytes in the interstitium of the deep fascia, which highlights a potential involvement of this structure in the pathogenesis of UCMD.
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Affiliation(s)
- Patrizia Sabatelli
- Unit of Bologna, CNR-Institute of Molecular Genetics “Luigi Luca Cavalli-Sforza”, 40136 Bologna, Italy;
- IRCCS Istituto Ortopedico Rizzoli, 40136 Bologna, Italy
- Correspondence: ; Tel.: +39-051-6366755; Fax: +39-051-4689922
| | - Luciano Merlini
- Department of Biomedical and Neuromotor Sciences, University of Bologna, 40126 Bologna, Italy; (L.M.); or (A.D.M.); (C.F.)
| | - Alberto Di Martino
- Department of Biomedical and Neuromotor Sciences, University of Bologna, 40126 Bologna, Italy; (L.M.); or (A.D.M.); (C.F.)
- Clinica Ortopedica e Traumatologica I, IRCCS Istituto Ortopedico Rizzoli, 40136 Bologna, Italy
- Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, PA 19107, USA
| | - Vittoria Cenni
- Unit of Bologna, CNR-Institute of Molecular Genetics “Luigi Luca Cavalli-Sforza”, 40136 Bologna, Italy;
- IRCCS Istituto Ortopedico Rizzoli, 40136 Bologna, Italy
| | - Cesare Faldini
- Department of Biomedical and Neuromotor Sciences, University of Bologna, 40126 Bologna, Italy; (L.M.); or (A.D.M.); (C.F.)
- Clinica Ortopedica e Traumatologica I, IRCCS Istituto Ortopedico Rizzoli, 40136 Bologna, Italy
- Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, PA 19107, USA
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26
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Lamandé SR. Collagen VI Muscle Disorders: Mutation Types, Pathogenic Mechanisms and Approaches to Therapy. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2021; 1348:311-323. [PMID: 34807426 DOI: 10.1007/978-3-030-80614-9_14] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Mutations in the genes encoding the major collagen VI isoform, COL6A1, COL6A2 and COL6A3, are responsible for the muscle disorders Bethlem myopathy and Ullrich congenital muscular dystrophy. These disorders form a disease spectrum from mild to severe. Dominant and recessive mutations are found along the entire spectrum and the clinical phenotype is strongly influenced by the way mutations impede collagen VI protein assembly. Most mutations are in the triple helical domain, towards the N-terminus and they compromise microfibril assembly. Some mutations are found outside the helix in the C- and N-terminal globular domains, but because these regions are highly polymorphic it is difficult to discriminate mutations from rare benign changes without detailed structural and functional studies. Collagen VI deficiency leads to mitochondrial dysfunction, deficient autophagy and increased apoptosis. Therapies that target these consequences have been tested in mouse models and some have shown modest efficacy in small human trials. Antisense therapies for a common mutation that introduces a pseudoexon show promise in cell culture but haven't yet been tested in an animal model. Future therapeutic approaches await new research into how collagen VI deficiency signals downstream consequences.
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Affiliation(s)
- Shireen R Lamandé
- Murdoch Children's Research Institute and Department of Paediatrics, University of Melbourne, Royal Children's Hospital, Parkville, VIC, Australia.
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27
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Mienaltowski MJ, Gonzales NL, Beall JM, Pechanec MY. Basic Structure, Physiology, and Biochemistry of Connective Tissues and Extracellular Matrix Collagens. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2021; 1348:5-43. [PMID: 34807414 DOI: 10.1007/978-3-030-80614-9_2] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
The physiology of connective tissues like tendons and ligaments is highly dependent upon the collagens and other such extracellular matrix molecules hierarchically organized within the tissues. By dry weight, connective tissues are mostly composed of fibrillar collagens. However, several other forms of collagens play essential roles in the regulation of fibrillar collagen organization and assembly, in the establishment of basement membrane networks that provide support for vasculature for connective tissues, and in the formation of extensive filamentous networks that allow for cell-extracellular matrix interactions as well as maintain connective tissue integrity. The structures and functions of these collagens are discussed in this chapter. Furthermore, collagen synthesis is a multi-step process that includes gene transcription, translation, post-translational modifications within the cell, triple helix formation, extracellular secretion, extracellular modifications, and then fibril assembly, fibril modifications, and fiber formation. Each step of collagen synthesis and fibril assembly is highly dependent upon the biochemical structure of the collagen molecules created and how they are modified in the cases of development and maturation. Likewise, when the biochemical structures of collagens or are compromised or these molecules are deficient in the tissues - in developmental diseases, degenerative conditions, or injuries - then the ultimate form and function of the connective tissues are impaired. In this chapter, we also review how biochemistry plays a role in each of the processes involved in collagen synthesis and assembly, and we describe differences seen by anatomical location and region within tendons. Moreover, we discuss how the structures of the molecules, fibrils, and fibers contribute to connective tissue physiology in health, and in pathology with injury and repair.
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Affiliation(s)
| | - Nicole L Gonzales
- Department of Animal Science, University of California Davis, Davis, CA, USA
| | - Jessica M Beall
- Department of Animal Science, University of California Davis, Davis, CA, USA
| | - Monica Y Pechanec
- Department of Animal Science, University of California Davis, Davis, CA, USA
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28
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Falzarano MS, Rossi R, Grilli A, Fang M, Osman H, Sabatelli P, Antoniel M, Lu Z, Li W, Selvatici R, Al-Khalili C, Gualandi F, Bicciato S, Torelli S, Ferlini A. Urine-Derived Stem Cells Express 571 Neuromuscular Disorders Causing Genes, Making Them a Potential in vitro Model for Rare Genetic Diseases. Front Physiol 2021; 12:716471. [PMID: 34744760 PMCID: PMC8565768 DOI: 10.3389/fphys.2021.716471] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2021] [Accepted: 09/21/2021] [Indexed: 12/13/2022] Open
Abstract
Background: Neuromuscular disorders (NMDs) are a heterogeneous group of genetic diseases, caused by mutations in genes involved in spinal cord, peripheral nerve, neuromuscular junction, and muscle functions. To advance the knowledge of the pathological mechanisms underlying NMDs and to eventually identify new potential drugs paving the way for personalized medicine, limitations regarding the availability of neuromuscular disease-related biological samples, rarely accessible from patients, are a major challenge. Aim: We characterized urinary stem cells (USCs) by in-depth transcriptome and protein profiling to evaluate whether this easily accessible source of patient-derived cells is suitable to study neuromuscular genetic diseases, focusing especially on those currently involved in clinical trials. Methods: The global transcriptomics of either native or MyoD transformed USCs obtained from control individuals was performed by RNA-seq. The expression of 610 genes belonging to 16 groups of disorders (http://www.musclegenetable.fr/) whose mutations cause neuromuscular diseases, was investigated on the RNA-seq output. In addition, protein expression of 11 genes related to NMDs including COL6A, EMD, LMNA, SMN, UBA1, DYNC1H1, SOD1, C9orf72, DYSF, DAG1, and HTT was analyzed in native USCs by immunofluorescence and/or Western blot (WB). Results: RNA-seq profile of control USCs shows that 571 out of 610 genes known to be involved in NMDs, are expressed in USCs. Interestingly, the expression levels of the majority of NMD genes remain unmodified following USCs MyoD transformation. Most genes involved in the pathogenesis of all 16 groups of NMDs are well represented except for channelopathies and malignant hyperthermia related genes. All tested proteins showed high expression values, suggesting consistency between transcription and protein representation in USCs. Conclusion: Our data suggest that USCs are human cells, obtainable by non-invasive means, which might be used as a patient-specific cell model to study neuromuscular disease-causing genes and that they can be likely adopted for a variety of in vitro functional studies such as mutation characterization, pathway identification, and drug screening.
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Affiliation(s)
- Maria Sofia Falzarano
- UOL (Unità Operativa Logistica) of Medical Genetics, University of Ferrara, Ferrara, Italy
| | - Rachele Rossi
- UOL (Unità Operativa Logistica) of Medical Genetics, University of Ferrara, Ferrara, Italy.,The Dubowitz Neuromuscular Centre, UCL Great Ormond Street Institute of Child Health, London, United Kingdom
| | - Andrea Grilli
- Department of Life Sciences, University of Modena and Reggio Emilia, Modena, Italy
| | - Mingyan Fang
- Beijing Genomics Institute (BGI)-Shenzhen, Shenzhen, China
| | - Hana Osman
- UOL (Unità Operativa Logistica) of Medical Genetics, University of Ferrara, Ferrara, Italy.,Department of Medical Microbiology, Faculty of Medical Laboratory Sciences, University of Khartoum, Khartoum, Sudan
| | - Patrizia Sabatelli
- CNR-Institute of Molecular Genetics "Luigi Luca Cavalli-Sforza"- Unit of Bologna, Bologna, Italy.,Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS) Istituto Ortopedico Rizzoli, Bologna, Italy
| | - Manuela Antoniel
- CNR-Institute of Molecular Genetics "Luigi Luca Cavalli-Sforza"- Unit of Bologna, Bologna, Italy.,Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS) Istituto Ortopedico Rizzoli, Bologna, Italy
| | - Zhiyuan Lu
- Beijing Genomics Institute (BGI)-Shenzhen, Shenzhen, China
| | - Wenyan Li
- Beijing Genomics Institute (BGI)-Shenzhen, Shenzhen, China
| | - Rita Selvatici
- UOL (Unità Operativa Logistica) of Medical Genetics, University of Ferrara, Ferrara, Italy
| | - Cristina Al-Khalili
- Department of Proteomics, KTH Royal Institute of Technology, Stockholm, Sweden
| | - Francesca Gualandi
- UOL (Unità Operativa Logistica) of Medical Genetics, University of Ferrara, Ferrara, Italy
| | - Silvio Bicciato
- Department of Life Sciences, University of Modena and Reggio Emilia, Modena, Italy
| | - Silvia Torelli
- The Dubowitz Neuromuscular Centre, UCL Great Ormond Street Institute of Child Health, London, United Kingdom.,National Institute for Health Research, Great Ormond Street Institute of Child Health Biomedical Research Centre, University College London, London, United Kingdom
| | - Alessandra Ferlini
- UOL (Unità Operativa Logistica) of Medical Genetics, University of Ferrara, Ferrara, Italy.,The Dubowitz Neuromuscular Centre, UCL Great Ormond Street Institute of Child Health, London, United Kingdom
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29
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The role of basement membranes in cardiac biology and disease. Biosci Rep 2021; 41:229516. [PMID: 34382650 PMCID: PMC8390786 DOI: 10.1042/bsr20204185] [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: 03/01/2021] [Revised: 07/26/2021] [Accepted: 08/11/2021] [Indexed: 11/17/2022] Open
Abstract
Basement membranes are highly specialised extracellular matrix structures that within the heart underlie endothelial cells and surround cardiomyocytes and vascular smooth muscle cells. They generate a dynamic and structurally supportive environment throughout cardiac development and maturation by providing physical anchorage to the underlying interstitium, structural support to the tissue, and by influencing cell behaviour and signalling. While this provides a strong link between basement membrane dysfunction and cardiac disease, the role of the basement membrane in cardiac biology remains under-researched and our understanding regarding the mechanistic interplay between basement membrane defects and their morphological and functional consequences remain important knowledge-gaps. In this review we bring together emerging understanding of basement membrane defects within the heart including in common cardiovascular pathologies such as contractile dysfunction and highlight some key questions that are now ready to be addressed.
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30
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Batra A, Lott DJ, Willcocks R, Forbes SC, Triplett W, Dastgir J, Yun P, Reghan Foley A, Bönnemann CG, Vandenborne K, Walter GA. Lower Extremity Muscle Involvement in the Intermediate and Bethlem Myopathy Forms of COL6-Related Dystrophy and Duchenne Muscular Dystrophy: A Cross-Sectional Study. J Neuromuscul Dis 2021; 7:407-417. [PMID: 32538860 DOI: 10.3233/jnd-190457] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Collagen VI-related dystrophies (COL6-RDs) and Duchenne muscular dystrophy (DMD) cause progressive muscle weakness and disability. COL6-RDs are caused by mutations in the COL6 genes (COL6A1, COL6A2 and COL6A3) encoding the extracellular matrix protein collagen VI, and DMD is caused by mutations in the DMD gene encoding the cytoplasmic protein dystrophin. Both COL6-RDs and DMD are characterized by infiltration of the muscles by fatty and fibrotic tissue. This study examined the effect of disease pathology on skeletal muscles in lower extremity muscles of COL6-RDs using timed functional tests, strength measures and qualitative/ quantitative magnetic resonance imaging/spectroscopy measures (MRI/MRS) in comparison to unaffected (control) individuals. Patients with COL6-RD were also compared to age and gender matched patients with DMD.Patients with COL6-RD presented with a typical pattern of fatty infiltration of the muscle giving rise to an apparent halo effect around the muscle, while patients with DMD had evidence of fatty infiltration throughout the muscle areas imaged. Quantitatively, fat fraction, and transverse relaxation time (T2) were elevated in both COL6-RD and DMD patients compared to unaffected (control) individuals. Patients with COL6-RD had widespread muscle atrophy, likely contributing to weakness. In contrast, patients with DMD revealed force deficits even in muscle groups with increased contractile areas.
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Affiliation(s)
- Abhinandan Batra
- Department of Physical Therapy, University of Florida, Gainesville, Florida, USA
| | - Donovan J Lott
- Department of Physical Therapy, University of Florida, Gainesville, Florida, USA
| | - Rebecca Willcocks
- Department of Physical Therapy, University of Florida, Gainesville, Florida, USA
| | - Sean C Forbes
- Department of Physical Therapy, University of Florida, Gainesville, Florida, USA
| | - William Triplett
- Department of Physical Therapy, University of Florida, Gainesville, Florida, USA
| | - Jahannaz Dastgir
- Neuromuscular and Neurogenetic Disorders of Childhood Section, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, Maryland, USA
| | - Pomi Yun
- Neuromuscular and Neurogenetic Disorders of Childhood Section, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, Maryland, USA
| | - A Reghan Foley
- Neuromuscular and Neurogenetic Disorders of Childhood Section, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, Maryland, USA
| | - Carsten G Bönnemann
- Neuromuscular and Neurogenetic Disorders of Childhood Section, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, Maryland, USA
| | - Krista Vandenborne
- Department of Physical Therapy, University of Florida, Gainesville, Florida, USA
| | - Glenn A Walter
- Department of Physiology and Functional Genomics, University of Florida, Gainesville, Florida, USA
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31
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Li JY, Liu SZ, Zheng DF, Zhang YS, Yu M. Collagen VI-related myopathy with scoliosis alone: A case report and literature review. World J Clin Cases 2021; 9:5302-5312. [PMID: 34307582 PMCID: PMC8283577 DOI: 10.12998/wjcc.v9.i19.5302] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/25/2021] [Revised: 04/26/2021] [Accepted: 04/29/2021] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Scoliosis is a complex three-dimensional deformity of spine and one of the common complications of collagen VI-related myopathy, caused by mutations in collagen type VI alpha 1 chain (COL6A1), COL6A2, and COL6A3 genes. The typical clinical presentations of collagen VI-related myopathy include weakness, hypotonia, laxity of distal joints, contractures of proximal joints, and skeletal deformities.
CASE SUMMARY A 28-year-old female presented with scoliosis for 28 years without weakness, hypotonia, laxity of distal joints, and contracture of proximal joints. Computed tomography and magnetic resonance imaging revealed hemivertebra, butterfly vertebra, and the missing vertebral space. Patients underwent orthopedic surgery and paravertebral muscle biopsy. The Cobb angle dropped from 103.4° to 52.9°. However, the muscle biopsy showed neurogenic muscular atrophy with myogenic lesions, suggesting congenital muscular dystrophy. Gene analysis indicated that mutations in COL6A1 (c.1612-10G>A) and COL6A2 (c.115+10G>T, c.2749G>A). Immunohistochemistry staining for collagen VI displayed shallow and discontinuous. Eventually, the patient was diagnosed as collagen VI-related myopathy.
CONCLUSION This newly found subtype of collagen VI-related myopathy has no typical manifestations; however, it is characterized by severe scoliosis and congenital vertebral deformity.
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Affiliation(s)
- Jun-Yu Li
- Department of Orthopaedics, Peking University Third Hospital, Beijing 100083, China
| | - Shuo-Zi Liu
- Department of Hematology, Peking University Third Hospital, Beijing 100083, China
| | - Dan-Feng Zheng
- Department of Pathology, Peking University Third Hospital, Beijing 100083, China
| | - Ying-Shuang Zhang
- Department of Neurology, Peking University Third Hospital, Beijing 100083, China
| | - Miao Yu
- Department of Orthopaedics, Peking University Third Hospital, Beijing 100083, China
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32
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Williams L, Layton T, Yang N, Feldmann M, Nanchahal J. Collagen VI as a driver and disease biomarker in human fibrosis. FEBS J 2021; 289:3603-3629. [PMID: 34109754 DOI: 10.1111/febs.16039] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2021] [Revised: 04/19/2021] [Accepted: 05/27/2021] [Indexed: 12/12/2022]
Abstract
Fibrosis of visceral organs such as the lungs, heart, kidneys and liver remains a major cause of morbidity and mortality and is also associated with many other disorders, including cancer and metabolic disease. In this review, we focus upon the microfibrillar collagen VI, which is present in the extracellular matrix (ECM) of most tissues. However, expression is elevated in numerous fibrotic conditions, such as idiopathic pulmonary disease (IPF), and chronic liver and kidney diseases. Collagen VI is composed of three subunits α1, α2 and α3, which can be replaced with alternate chains of α4, α5 or α6. The C-terminal globular domain (C5) of collagen VI α3 can be proteolytically cleaved to form a biologically active fragment termed endotrophin, which has been shown to actively drive fibrosis, inflammation and insulin resistance. Tissue biopsies have long been considered the gold standard for diagnosis and monitoring of progression of fibrotic disease. The identification of neoantigens from enzymatically processed collagen chains have revolutionised the biomarker field, allowing rapid diagnosis and evaluation of prognosis of numerous fibrotic conditions, as well as providing valuable clinical trial endpoint determinants. Collagen VI chain fragments such as endotrophin (PRO-C6), C6M and C6Mα3 are emerging as important biomarkers for fibrotic conditions.
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Affiliation(s)
- Lynn Williams
- Kennedy Institute of Rheumatology, Nuffield Department of Orthopaedics Rheumatology and Musculoskeletal Science, University of Oxford, UK
| | - Thomas Layton
- Kennedy Institute of Rheumatology, Nuffield Department of Orthopaedics Rheumatology and Musculoskeletal Science, University of Oxford, UK
| | - Nan Yang
- Kennedy Institute of Rheumatology, Nuffield Department of Orthopaedics Rheumatology and Musculoskeletal Science, University of Oxford, UK
| | - Marc Feldmann
- Kennedy Institute of Rheumatology, Nuffield Department of Orthopaedics Rheumatology and Musculoskeletal Science, University of Oxford, UK
| | - Jagdeep Nanchahal
- Kennedy Institute of Rheumatology, Nuffield Department of Orthopaedics Rheumatology and Musculoskeletal Science, University of Oxford, UK
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33
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Jin CY, Zheng R, Lin ZH, Xue NJ, Chen Y, Gao T, Yan YQ, Fang Y, Yan YP, Yin XZ, Tian J, Pu JL, Zhang BR. Study of the collagen type VI alpha 3 (COL6A3) gene in Parkinson's disease. BMC Neurol 2021; 21:187. [PMID: 33964895 PMCID: PMC8106155 DOI: 10.1186/s12883-021-02215-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2021] [Accepted: 04/20/2021] [Indexed: 12/12/2022] Open
Abstract
Background To date, the genetic contribution to Parkinson’s disease (PD) remains unclear. Mutations in the collagen type VI alpha 3 (COL6A3) gene were recently identified as a cause of isolated dystonia. Since PD and dystonia are closely related disorders with shared clinical and genetic characteristics, we explored the association between COL6A3 and PD in a Chinese cohort. Methods We performed genetic screening of COL6A3 in a Chinese cohort of 173 patients with sporadic PD and 200 healthy controls. We identified variants that are likely to have pathogenic effects based on: 1) a minor allele frequency of < 0.01; and 2) the variant being recognized as deleterious by at least 15 different in silico predicting tools. Finally, we tested the aggregate burden of COL6A3 on PD via SKAT-O analysis. Results First, we found compound heterozygous COL6A3 gene mutations in one early-onset PD patients. Then, we explored whether COL6A3 variants contributed to increased risk of developing PD in a Chinese population. We detected 21 rare non-synonymous variants. Pathogenicity predictions identified 7 novel non-synonymous variants as likely to be pathogenic. SKAT-O analysis further revealed that an aggregate burden of variants in COL6A3 contributes to PD (p = 0.038). Conclusion An increased aggregate burden of the COL6A3 gene was detected in patients with PD.
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Affiliation(s)
- Chong-Yao Jin
- Department of Neurology, Second Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, Zhejiang, 310009, People's Republic of China
| | - Ran Zheng
- Department of Neurology, Second Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, Zhejiang, 310009, People's Republic of China
| | - Zhi-Hao Lin
- Department of Neurology, Second Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, Zhejiang, 310009, People's Republic of China
| | - Nai-Jia Xue
- Department of Neurology, Second Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, Zhejiang, 310009, People's Republic of China
| | - Ying Chen
- Department of Neurology, Second Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, Zhejiang, 310009, People's Republic of China
| | - Ting Gao
- Department of Neurology, Second Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, Zhejiang, 310009, People's Republic of China
| | - Yi-Qun Yan
- Department of Neurology, Second Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, Zhejiang, 310009, People's Republic of China
| | - Yi Fang
- Department of Neurology, Second Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, Zhejiang, 310009, People's Republic of China
| | - Ya-Ping Yan
- Department of Neurology, Second Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, Zhejiang, 310009, People's Republic of China
| | - Xin-Zhen Yin
- Department of Neurology, Second Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, Zhejiang, 310009, People's Republic of China
| | - Jun Tian
- Department of Neurology, Second Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, Zhejiang, 310009, People's Republic of China
| | - Jia-Li Pu
- Department of Neurology, Second Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, Zhejiang, 310009, People's Republic of China.
| | - Bao-Rong Zhang
- Department of Neurology, Second Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, Zhejiang, 310009, People's Republic of China.
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34
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Arribat Y. Genetic alterations of VWA1: a new link between extracellular matrix and neuromuscular diseases. Brain 2021; 144:362-365. [PMID: 33693694 DOI: 10.1093/brain/awaa464] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
This scientific commentary refers to ‘Bi-allelic truncating mutations in VWA1 cause neuromyopathy’, by Deschauer et al. (doi:10.1093/brain/awaa418) and ‘An ancestral 10-bp repeat expansion in VWA1 causes recessive hereditary motor neuropathy’, by Pagnamenta et al. (doi:10.1093/brain/awaa420)
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Affiliation(s)
- Yoan Arribat
- Department of Biomedical Sciences School of Biology and Medicine University of Lausanne, Lausanne Switzerland
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35
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Bornstein B, Konstantin N, Alessandro C, Tresch MC, Zelzer E. More than movement: the proprioceptive system as a new regulator of musculoskeletal biology. CURRENT OPINION IN PHYSIOLOGY 2021. [DOI: 10.1016/j.cophys.2021.01.004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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36
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Villar-Quiles RN, Donkervoort S, de Becdelièvre A, Gartioux C, Jobic V, Foley AR, McCarty RM, Hu Y, Menassa R, Michel L, Gousse G, Lacour A, Petiot P, Streichenberger N, Choumert A, Declerck L, Urtizberea JA, Sole G, Furby A, Cérino M, Krahn M, Campana-Salort E, Ferreiro A, Eymard B, Bönnemann CG, Bharucha-Goebel D, Sumner CJ, Connolly AM, Richard P, Allamand V, Métay C, Stojkovic T. Clinical and Molecular Spectrum Associated with COL6A3 c.7447A>G p.(Lys2483Glu) Variant: Elucidating its Role in Collagen VI-related Myopathies. J Neuromuscul Dis 2021; 8:633-645. [PMID: 33749658 DOI: 10.3233/jnd-200577] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
BACKGROUND Dominant and recessive autosomal pathogenic variants in the three major genes (COL6A1-A2-A3) encoding the extracellular matrix protein collagen VI underlie a group of myopathies ranging from early-onset severe conditions (Ullrich congenital muscular dystrophy) to milder forms maintaining independent ambulation (Bethlem myopathy). Diagnosis is based on the combination of clinical presentation, muscle MRI, muscle biopsy, analysis of collagen VI secretion, and COL6A1-A2-A3 genetic analysis, the interpretation of which can be challenging. OBJECTIVE To refine the phenotypical spectrum associated with the frequent COL6A3 missense variant c.7447A>G (p.Lys2483Glu). METHODS We report the clinical and molecular findings in 16 patients: 12 patients carrying this variant in compound heterozygosity with another COL6A3 variant, and four homozygous patients. RESULTS Patients carrying this variant in compound heterozygosity with a truncating COL6A3 variant exhibit a phenotype consistent with COL6-related myopathies (COL6-RM), with joint contractures, proximal weakness and skin abnormalities. All remain ambulant in adulthood and only three have mild respiratory involvement. Most show typical muscle MRI findings. In five patients, reduced collagen VI secretion was observed in skin fibroblasts cultures. All tested parents were unaffected heterozygous carriers. Conversely, two out of four homozygous patients did not present with the classical COL6-RM clinical and imaging findings. Collagen VI immunolabelling on cultured fibroblasts revealed rather normal secretion in one and reduced secretion in another. Muscle biopsy from one homozygous patient showed myofibrillar disorganization and rimmed vacuoles. CONCLUSIONS In light of our results, we postulate that the COL6A3 variant c.7447A>G may act as a modulator of the clinical phenotype. Thus, in patients with a typical COL6-RM phenotype, a second variant must be thoroughly searched for, while for patients with atypical phenotypes further investigations should be conducted to exclude alternative causes. This works expands the clinical and molecular spectrum of COLVI-related myopathies.
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Affiliation(s)
- Rocío N Villar-Quiles
- AP-HP, Reference Center for Neuromuscular Disorders, Pitié-Salpêtrière Hospital, Paris, France.,Centre de Recherche en Myologie, Institut de Myologie, Sorbonne Université, Inserm, Paris, France
| | - Sandra Donkervoort
- Neuromuscular and Neurogenetic Disorders of Childhood Section, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD, USA
| | - Alix de Becdelièvre
- AP-HP, Département de Génétique, Hôpital Henri Mondor, Créteil, France.,AP-HP, Centre de Génétique Moléculaire et Chromosomique, UF Cardiogénétique et Myogénétique Moléculaire et Cellulaire, GH Pitié-Salpêtrière, Paris, France
| | - Corine Gartioux
- Centre de Recherche en Myologie, Institut de Myologie, Sorbonne Université, Inserm, Paris, France
| | - Valérie Jobic
- AP-HP, Centre de Génétique Moléculaire et Chromosomique, UF Cardiogénétique et Myogénétique Moléculaire et Cellulaire, GH Pitié-Salpêtrière, Paris, France
| | - A Reghan Foley
- Neuromuscular and Neurogenetic Disorders of Childhood Section, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD, USA
| | - Riley M McCarty
- Neuromuscular and Neurogenetic Disorders of Childhood Section, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD, USA
| | - Ying Hu
- Neuromuscular and Neurogenetic Disorders of Childhood Section, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD, USA
| | - Rita Menassa
- Hospices Civils de Lyon, LBMMS, Service Biochimie Biologie Moléculaire Grand Est, Groupement Hospitalier Est, CBPE, Bron, France
| | - Laurence Michel
- Hospices Civils de Lyon, LBMMS, Service Biochimie Biologie Moléculaire Grand Est, Groupement Hospitalier Est, CBPE, Bron, France
| | - Gaelle Gousse
- Service de Neuropédiatrie, CHU Saint-Étienne, Saint-Étienne, France
| | - Arnaud Lacour
- Service de Neurologie, CHU Saint-Étienne, Saint-Étienne, France
| | - Philippe Petiot
- Neurologie et Explorations Fonctionnelles Neurologiques, Centre de Référence Maladies Neuromusculaires de la Région Rhône-Alpes Hôpital de la Croix-Rousse, Lyon, France
| | - Nathalie Streichenberger
- Centre de Pathologie et Neuropathologie Est, Hospices Civils de Lyon, Groupement Hospitalier Est, Bron, France
| | - Ariane Choumert
- Centre des Maladies Rares Neurologiques, CHU Sud Réunion, Saint-Pierre, France
| | - Léa Declerck
- Centre des Maladies Rares Neurologiques, CHU Sud Réunion, Saint-Pierre, France
| | - J A Urtizberea
- Hôpital Marin, Centre de Compétence Neuromusculaire, Hendaye, France
| | - Guilhem Sole
- Centre de Référence des Maladies Neuromusculaires AOC, Hôpital Pellegrin, CHU Bordeaux, Bordeaux, France
| | - Alain Furby
- Centre de Référence des Maladies Neuromusculaires Rares Rhônes-Alpes, Hôpital Nord, CHU de Saint-Étienne, Saint-Étienne, France
| | - Matthieu Cérino
- AP-HM, Département de Génétique Médicale, Hôpital Timone Enfants, Assistance Publique Hôpitaux de Marseille, Marseille, France
| | - Martin Krahn
- AP-HM, Département de Génétique Médicale, Hôpital Timone Enfants, Assistance Publique Hôpitaux de Marseille, Marseille, France
| | | | - Ana Ferreiro
- AP-HP, Reference Center for Neuromuscular Disorders, Pitié-Salpêtrière Hospital, Paris, France.,Basic and Translational Myology Lab, UMR8251, University Paris Diderot/CNRS, Paris, France
| | - Bruno Eymard
- AP-HP, Reference Center for Neuromuscular Disorders, Pitié-Salpêtrière Hospital, Paris, France
| | - Carsten G Bönnemann
- Neuromuscular and Neurogenetic Disorders of Childhood Section, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD, USA
| | - Diana Bharucha-Goebel
- Neuromuscular and Neurogenetic Disorders of Childhood Section, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD, USA.,Division of Neurology, Children's National Hospital, Washington, DC, USA
| | - Charlotte J Sumner
- Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, MD, USA.,The Solomon H. Snyder Department of Neuroscience, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Anne M Connolly
- Department of Pediatrics, Neurology Division, Nationwide Children's Hospital, Ohio State University, Columbus, OH, USA
| | - Pascale Richard
- AP-HP, Centre de Génétique Moléculaire et Chromosomique, UF Cardiogénétique et Myogénétique Moléculaire et Cellulaire, GH Pitié-Salpêtrière, Paris, France
| | - Valérie Allamand
- Centre de Recherche en Myologie, Institut de Myologie, Sorbonne Université, Inserm, Paris, France.,Unit of Muscle Biology, Department of Experimental Medical Science, Lund University, Lund, Sweden
| | - Corinne Métay
- AP-HP, Centre de Génétique Moléculaire et Chromosomique, UF Cardiogénétique et Myogénétique Moléculaire et Cellulaire, GH Pitié-Salpêtrière, Paris, France.,Centre de Recherche en Myologie, Institut de Myologie, Sorbonne Université, Inserm, Paris, France
| | - Tanya Stojkovic
- AP-HP, Reference Center for Neuromuscular Disorders, Pitié-Salpêtrière Hospital, Paris, France.,Centre de Recherche en Myologie, Institut de Myologie, Sorbonne Université, Inserm, Paris, France
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Zhong J, Xie Y, Dang Y, Zhang J, Song Y, Lan D. Use of RNA‑sequencing to detect abnormal transcription of the collagen α‑2 (VI) chain gene that can lead to Bethlem myopathy. Int J Mol Med 2021; 47:28. [PMID: 33537799 PMCID: PMC7895517 DOI: 10.3892/ijmm.2021.4861] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2020] [Accepted: 11/27/2020] [Indexed: 11/13/2022] Open
Abstract
Bethlem myopathy (BM) is an autosomal dominant or autosomal recessive disorder and is usually associated with mutations in the collagen VI genes. In the present study, the pathogenicity of a novel splice-site mutation was explored using RNA-sequencing in a family with suspected BM, and a myopathy panel was performed in the proband. The genetic status of all family members was confirmed using Sanger sequencing. Clinical data and magnetic resonance imaging (MRI) features were also documented. In silico analysis was performed to predict the effects of the splice mutation. RNA-sequencing and reverse transcription (RT)-PCR were used to assess aberrant splicing. Immunocytochemistry was conducted to measure collagen VI protein levels within the gastrocnemius and in cultured skin fibroblasts. The results revealed that three patients in the family shared a similar classic BM presentation. MRI revealed distinct patterns of fatty infiltration in the lower extremities. A novel splicing mutation c.736-1G>C in the collagen α-2 (VI) chain (COL6A2) gene was found in all three patients. In silico analysis predicted that the mutation would destroy the normal splice acceptor site. RNA-sequencing detected two abnormal splicing variants adjacent to the mutation site, and RT-PCR confirmed the RNA-sequencing findings. Furthermore, a defect in the collagen protein within cultured fibroblasts was detected using immunocytochemistry. The mutation c.736-1G>C in the COL6A2 gene caused aberrant splicing and led to premature termination of protein translation. In conclusion, these findings may improve our knowledge of mutations of the COL6A2 gene associated with BM and demonstrated that RNA-sequencing can be a powerful tool for finding the underlying mechanism of a disease-causing mutations at a splice site.
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Affiliation(s)
- Jingzi Zhong
- Department of Pediatrics, The First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi 530021, P.R. China
| | - Yanshu Xie
- Department of Pediatrics, The First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi 530021, P.R. China
| | - Yiwu Dang
- Department of Pathology, The First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi 530021, P.R. China
| | - Jiapeng Zhang
- Department of Pediatrics, The First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi 530021, P.R. China
| | - Yingru Song
- Department of Radiology, The First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi 530021, P.R. China
| | - Dan Lan
- Department of Pediatrics, The First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi 530021, P.R. China
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38
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Bardakov SN, Deev RV, Magomedova RM, Umakhanova ZR, Allamand V, Gartioux C, Zulfugarov KZ, Akhmedova PG, Tsargush VA, Titova AA, Mavlikeev MO, Zorin VL, Chernets EN, Dalgatov GD, Konovalov FA, Isaev AA. Intrafamilial Phenotypic Variability of Collagen VI-Related Myopathy Due to a New Mutation in the COL6A1 Gene. J Neuromuscul Dis 2020; 8:273-285. [PMID: 33337382 PMCID: PMC8075389 DOI: 10.3233/jnd-200476] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022]
Abstract
A family of five male siblings (three survivors at 48, 53 and 58 years old; two deceased at 8 months old and 2.5 years old) demonstrating significant phenotypic variability ranging from intermediate to the myosclerotic like Bethlem myopathy is presented. Whole-exome sequencing (WES) identified a new homozygous missense mutation chr21:47402679 T > C in the canonical splice donor site of the second intron (c.227 + 2T>C) in the COL6A1 gene. mRNA analysis confirmed skipping of exon 2 encoding 925 amino-acids in 94–95% of resulting transcripts. Three sibs presented with intermediate phenotype of collagen VI-related dystrophies (48, 53 and 2.5 years old) while the fourth sibling (58 years old) was classified as Bethlem myopathy with spine rigidity. The two older siblings with the moderate progressive phenotype (48 and 53 years old) lost their ability to maintain a vertical posture caused by pronounced contractures of large joints, but continued to ambulate throughout life on fully bent legs without auxiliary means of support. Immunofluorescence analysis of dermal fibroblasts demonstrated that no type VI collagen was secreted in any of the siblings’ cells, regardless of clinical manifestations severity while fibroblast proliferation and colony formation ability was decreased. The detailed genetic and long term clinical data contribute to broadening the genotypic and phenotypic spectrum of COL6A1 related disease.
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Affiliation(s)
| | - Roman V Deev
- Human Stem Cells Institute, Moscow, Russia.,I.I. Mechnikov North-Western State Medical University, St. Petersburg, Russia
| | | | | | - Valérie Allamand
- Sorbonne Université UPMC Paris 06 -Inserm UMRS974, Research Center in Myology, Hospital Pitié-Salpêtrière, Paris, France
| | - Corine Gartioux
- Sorbonne Université UPMC Paris 06 -Inserm UMRS974, Research Center in Myology, Hospital Pitié-Salpêtrière, Paris, France
| | | | | | | | - Angelina A Titova
- Institute of Fundamental Medicine and Biology, Kazan (Volga Region) Federal University, Kazan, Russia
| | - Mikhail O Mavlikeev
- I.I. Mechnikov North-Western State Medical University, St. Petersburg, Russia
| | | | | | - Gimat D Dalgatov
- Scientific-Clinical Center of Otorhinolaryngology FMBA of Russia Moscow, Russia
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39
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Modelling Neuromuscular Diseases in the Age of Precision Medicine. J Pers Med 2020; 10:jpm10040178. [PMID: 33080928 PMCID: PMC7712305 DOI: 10.3390/jpm10040178] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2020] [Revised: 10/14/2020] [Accepted: 10/15/2020] [Indexed: 12/20/2022] Open
Abstract
Advances in knowledge resulting from the sequencing of the human genome, coupled with technological developments and a deeper understanding of disease mechanisms of pathogenesis are paving the way for a growing role of precision medicine in the treatment of a number of human conditions. The goal of precision medicine is to identify and deliver effective therapeutic approaches based on patients’ genetic, environmental, and lifestyle factors. With the exception of cancer, neurological diseases provide the most promising opportunity to achieve treatment personalisation, mainly because of accelerated progress in gene discovery, deep clinical phenotyping, and biomarker availability. Developing reproducible, predictable and reliable disease models will be key to the rapid delivery of the anticipated benefits of precision medicine. Here we summarize the current state of the art of preclinical models for neuromuscular diseases, with particular focus on their use and limitations to predict safety and efficacy treatment outcomes in clinical trials.
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40
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Williams LM, McCann FE, Cabrita MA, Layton T, Cribbs A, Knezevic B, Fang H, Knight J, Zhang M, Fischer R, Bonham S, Steenbeek LM, Yang N, Sood M, Bainbridge C, Warwick D, Harry L, Davidson D, Xie W, Sundstrӧm M, Feldmann M, Nanchahal J. Identifying collagen VI as a target of fibrotic diseases regulated by CREBBP/EP300. Proc Natl Acad Sci U S A 2020; 117:20753-20763. [PMID: 32759223 PMCID: PMC7456151 DOI: 10.1073/pnas.2004281117] [Citation(s) in RCA: 41] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Fibrotic diseases remain a major cause of morbidity and mortality, yet there are few effective therapies. The underlying pathology of all fibrotic conditions is the activity of myofibroblasts. Using cells from freshly excised disease tissue from patients with Dupuytren's disease (DD), a localized fibrotic disorder of the palm, we sought to identify new therapeutic targets for fibrotic disease. We hypothesized that the persistent activity of myofibroblasts in fibrotic diseases might involve epigenetic modifications. Using a validated genetics-led target prioritization algorithm (Pi) of genome wide association studies (GWAS) data and a broad screen of epigenetic inhibitors, we found that the acetyltransferase CREBBP/EP300 is a major regulator of contractility and extracellular matrix production via control of H3K27 acetylation at the profibrotic genes, ACTA2 and COL1A1 Genomic analysis revealed that EP300 is highly enriched at enhancers associated with genes involved in multiple profibrotic pathways, and broad transcriptomic and proteomic profiling of CREBBP/EP300 inhibition by the chemical probe SGC-CBP30 identified collagen VI (Col VI) as a prominent downstream regulator of myofibroblast activity. Targeted Col VI knockdown results in significant decrease in profibrotic functions, including myofibroblast contractile force, extracellular matrix (ECM) production, chemotaxis, and wound healing. Further evidence for Col VI as a major determinant of fibrosis is its abundant expression within Dupuytren's nodules and also in the fibrotic foci of idiopathic pulmonary fibrosis (IPF). Thus, Col VI may represent a tractable therapeutic target across a range of fibrotic disorders.
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Affiliation(s)
- Lynn M Williams
- Kennedy Institute of Rheumatology, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Science, University of Oxford, Oxford OX3 7FY, United Kingdom
| | - Fiona E McCann
- Kennedy Institute of Rheumatology, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Science, University of Oxford, Oxford OX3 7FY, United Kingdom
| | - Marisa A Cabrita
- Kennedy Institute of Rheumatology, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Science, University of Oxford, Oxford OX3 7FY, United Kingdom
| | - Thomas Layton
- Kennedy Institute of Rheumatology, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Science, University of Oxford, Oxford OX3 7FY, United Kingdom
| | - Adam Cribbs
- Botnar Research Centre, National Institute for Health Research Oxford Biomedical Research Unit, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Science, University of Oxford, Oxford OX3 7LD, United Kingdom
| | - Bogdan Knezevic
- Wellcome Trust Centre for Human Genetics, University of Oxford, Oxford OX3 7BN, United Kingdom
| | - Hai Fang
- Wellcome Trust Centre for Human Genetics, University of Oxford, Oxford OX3 7BN, United Kingdom
| | - Julian Knight
- Wellcome Trust Centre for Human Genetics, University of Oxford, Oxford OX3 7BN, United Kingdom
| | - Mingjun Zhang
- Biotherapeutics Department, Celgene Corporation, San Diego, CA 92121
| | - Roman Fischer
- Target Discovery Institute, Nuffield Department of Medicine, University of Oxford, Oxford OX3 7FZ, United Kingdom
| | - Sarah Bonham
- Target Discovery Institute, Nuffield Department of Medicine, University of Oxford, Oxford OX3 7FZ, United Kingdom
| | - Leenart M Steenbeek
- Department of Plastic Surgery, Geert Grooteplein Zuid 10, 6525 GA Nijmegen, The Netherlands
| | - Nan Yang
- Kennedy Institute of Rheumatology, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Science, University of Oxford, Oxford OX3 7FY, United Kingdom
| | - Manu Sood
- Department of Plastic and Reconstructive Surgery, Broomfield Hospital, Mid and South Essex National Health Service Foundation Trust, Chelmsford CM1 4ET, Essex, United Kingdom
| | - Chris Bainbridge
- Pulvertaft Hand Surgery Centre, Royal Derby Hospital, University Hospitals of Derby and Burton National Health Service Foundation Trust, Derby DE22 3NE, United Kingdom
| | - David Warwick
- Department of Trauma and Orthopaedic Surgery, University Hospital Southampton National Health Service Foundation Trust, Southampton SO16 6YD, United Kingdom
| | - Lorraine Harry
- Department of Plastic and Reconstructive Surgery, Queen Victoria Hospital National Health Service Foundation Trust, East Grinstead RH19 3DZ, United Kingdom
| | - Dominique Davidson
- Department of Plastic and Reconstructive Surgery, St. John's Hospital, Livingston, West Lothian EH54 6PP, United Kingdom
| | - Weilin Xie
- Biotherapeutics Department, Celgene Corporation, San Diego, CA 92121
| | - Michael Sundstrӧm
- Structural Genomics Consortium, Karolinska Centre for Molecular Medicine, Karolinska University Hospital, 171 76 Stockholm, Sweden
| | - Marc Feldmann
- Kennedy Institute of Rheumatology, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Science, University of Oxford, Oxford OX3 7FY, United Kingdom;
| | - Jagdeep Nanchahal
- Kennedy Institute of Rheumatology, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Science, University of Oxford, Oxford OX3 7FY, United Kingdom;
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41
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Wu X, Li W, Zheng Y. Recent Progress on Relevant microRNAs in Autism Spectrum Disorders. Int J Mol Sci 2020; 21:ijms21165904. [PMID: 32824515 PMCID: PMC7460584 DOI: 10.3390/ijms21165904] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2020] [Revised: 08/06/2020] [Accepted: 08/12/2020] [Indexed: 01/10/2023] Open
Abstract
Autism spectrum disorder (ASD) is a neurodevelopmental disorder whose pathogenesis is unclear and is affected by both genetic and environmental factors. The microRNAs (miRNAs) are a kind of single-stranded non-coding RNA with 20-22 nucleotides, which normally inhibit their target mRNAs at a post-transcriptional level. miRNAs are involved in almost all biological processes and are closely related to ASD and many other diseases. In this review, we summarize relevant miRNAs in ASD, and analyze dysregulated miRNAs in brain tissues and body fluids of ASD patients, which may contribute to the pathogenesis and diagnosis of ASD.
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42
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Solomon-Degefa H, Gebauer JM, Jeffries CM, Freiburg CD, Meckelburg P, Bird LE, Baumann U, Svergun DI, Owens RJ, Werner JM, Behrmann E, Paulsson M, Wagener R. Structure of a collagen VI α3 chain VWA domain array: adaptability and functional implications of myopathy causing mutations. J Biol Chem 2020; 295:12755-12771. [PMID: 32719005 DOI: 10.1074/jbc.ra120.014865] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2020] [Revised: 07/16/2020] [Indexed: 12/23/2022] Open
Abstract
Collagen VI is a ubiquitous heterotrimeric protein of the extracellular matrix (ECM) that plays an essential role in the proper maintenance of skeletal muscle. Mutations in collagen VI lead to a spectrum of congenital myopathies, from the mild Bethlem myopathy to the severe Ullrich congenital muscular dystrophy. Collagen VI contains only a short triple helix and consists primarily of von Willebrand factor type A (VWA) domains, protein-protein interaction modules found in a range of ECM proteins. Disease-causing mutations occur commonly in the VWA domains, and the second VWA domain of the α3 chain, the N2 domain, harbors several such mutations. Here, we investigate structure-function relationships of the N2 mutations to shed light on their possible myopathy mechanisms. We determined the X-ray crystal structure of N2, combined with monitoring secretion efficiency in cell culture of selected N2 single-domain mutants, finding that mutations located within the central core of the domain severely affect secretion efficiency. In longer α3 chain constructs, spanning N6-N3, small-angle X-ray scattering demonstrates that the tandem VWA array has a modular architecture and samples multiple conformations in solution. Single-particle EM confirmed the presence of multiple conformations. Structural adaptability appears intrinsic to the VWA domain region of collagen VI α3 and has implications for binding interactions and modulating stiffness within the ECM.
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Affiliation(s)
| | - Jan M Gebauer
- Institute of Biochemistry, University of Cologne, Cologne, Germany
| | - Cy M Jeffries
- European Molecular Biology Laboratory, Hamburg Unit, Hamburg, Germany
| | - Carolin D Freiburg
- Center for Biochemistry, Medical Faculty, University of Cologne, Cologne, Germany
| | | | - Louise E Bird
- The Research Complex at Harwell, Rutherford Appleton Laboratory Harwell, Oxford, United Kingdom.,Structural Biology Division, Wellcome Human Genetics Centre, University of Oxford, Oxford, United Kingdom
| | - Ulrich Baumann
- Institute of Biochemistry, University of Cologne, Cologne, Germany
| | - Dmitri I Svergun
- European Molecular Biology Laboratory, Hamburg Unit, Hamburg, Germany
| | - Raymond J Owens
- The Research Complex at Harwell, Rutherford Appleton Laboratory Harwell, Oxford, United Kingdom.,Structural Biology Division, Wellcome Human Genetics Centre, University of Oxford, Oxford, United Kingdom
| | - Jörn M Werner
- School of Biological Sciences, University of Southampton, Southampton, United Kingdom
| | - Elmar Behrmann
- Institute of Biochemistry, University of Cologne, Cologne, Germany.,Max Planck Research Group Structural Dynamics of Proteins, Center of Advanced European Studies and Research (caesar), Bonn, Germany
| | - Mats Paulsson
- Center for Biochemistry, Medical Faculty, University of Cologne, Cologne, Germany.,Center for Molecular Medicine (CMMC), Cologne, Germany.,Cologne Center for Musculoskeletal Biomechanics (CCMB), Cologne, Germany
| | - Raimund Wagener
- Center for Biochemistry, Medical Faculty, University of Cologne, Cologne, Germany .,Center for Molecular Medicine (CMMC), Cologne, Germany.,Cologne Center for Musculoskeletal Biomechanics (CCMB), Cologne, Germany
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43
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Ralbovsky NM, Dey P, Galfano A, Dey BK, Lednev IK. Diagnosis of a model of Duchenne muscular dystrophy in blood serum of mdx mice using Raman hyperspectroscopy. Sci Rep 2020; 10:11734. [PMID: 32678134 PMCID: PMC7366916 DOI: 10.1038/s41598-020-68598-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2019] [Accepted: 06/29/2020] [Indexed: 11/14/2022] Open
Abstract
Duchenne muscular dystrophy (DMD) is the most common and severe form of muscular dystrophy and affects boys in infancy or early childhood. Current methods for diagnosing DMD are often laborious, expensive, invasive, and typically diagnose the disease late in its progression. In an effort to improve the accuracy and ease of diagnosis, this study focused on developing a novel method for diagnosing DMD which combines Raman hyperspectroscopic analysis of blood serum with advanced statistical analysis. Partial least squares discriminant analysis was applied to the spectral dataset acquired from blood serum of a mouse model of Duchenne muscular dystrophy (mdx) and control mice. Cross-validation showed 95.2% sensitivity and 94.6% specificity for identifying diseased spectra. These results were verified via external validation, which achieved 100% successful classification accuracy at the donor level. This proof-of-concept study presents Raman hyperspectroscopic analysis of blood serum as an easy, fast, non-expensive, and minimally invasive detection method for distinguishing control and mdx model mice, with a strong potential for clinical diagnosis of DMD.
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Affiliation(s)
- Nicole M Ralbovsky
- Department of Chemistry, University At Albany, SUNY, 1400 Washington Avenue, Albany, NY, 12222, USA.,The RNA Institute, University At Albany, SUNY, 1400 Washington Avenue, Albany, NY, 12222, USA
| | - Paromita Dey
- The RNA Institute, University At Albany, SUNY, 1400 Washington Avenue, Albany, NY, 12222, USA
| | - Andrew Galfano
- Department of Chemistry, University At Albany, SUNY, 1400 Washington Avenue, Albany, NY, 12222, USA
| | - Bijan K Dey
- The RNA Institute, University At Albany, SUNY, 1400 Washington Avenue, Albany, NY, 12222, USA. .,Department of Biological Sciences, University At Albany, SUNY, 1400 Washington Avenue, Albany, NY, 12222, USA.
| | - Igor K Lednev
- Department of Chemistry, University At Albany, SUNY, 1400 Washington Avenue, Albany, NY, 12222, USA. .,The RNA Institute, University At Albany, SUNY, 1400 Washington Avenue, Albany, NY, 12222, USA. .,Department of Biological Sciences, University At Albany, SUNY, 1400 Washington Avenue, Albany, NY, 12222, USA.
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44
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Bonora M, Patergnani S, Ramaccini D, Morciano G, Pedriali G, Kahsay AE, Bouhamida E, Giorgi C, Wieckowski MR, Pinton P. Physiopathology of the Permeability Transition Pore: Molecular Mechanisms in Human Pathology. Biomolecules 2020; 10:biom10070998. [PMID: 32635556 PMCID: PMC7408088 DOI: 10.3390/biom10070998] [Citation(s) in RCA: 79] [Impact Index Per Article: 19.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2020] [Revised: 06/29/2020] [Accepted: 07/02/2020] [Indexed: 12/13/2022] Open
Abstract
Mitochondrial permeability transition (MPT) is the sudden loss in the permeability of the inner mitochondrial membrane (IMM) to low-molecular-weight solutes. Due to osmotic forces, MPT is paralleled by a massive influx of water into the mitochondrial matrix, eventually leading to the structural collapse of the organelle. Thus, MPT can initiate outer-mitochondrial-membrane permeabilization (MOMP), promoting the activation of the apoptotic caspase cascade and caspase-independent cell-death mechanisms. The induction of MPT is mostly dependent on mitochondrial reactive oxygen species (ROS) and Ca2+, but is also dependent on the metabolic stage of the affected cell and signaling events. Therefore, since its discovery in the late 1970s, the role of MPT in human pathology has been heavily investigated. Here, we summarize the most significant findings corroborating a role for MPT in the etiology of a spectrum of human diseases, including diseases characterized by acute or chronic loss of adult cells and those characterized by neoplastic initiation.
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Affiliation(s)
- Massimo Bonora
- Department of Medical Sciences, Laboratory for Technologies of Advanced Therapies (LTTA), University of Ferrara, 44121 Ferrara, Italy; (S.P.); (D.R.); (G.M.); (G.P.); (A.E.K.); (E.B.); (C.G.)
- Correspondence: (M.B.); (P.P.)
| | - Simone Patergnani
- Department of Medical Sciences, Laboratory for Technologies of Advanced Therapies (LTTA), University of Ferrara, 44121 Ferrara, Italy; (S.P.); (D.R.); (G.M.); (G.P.); (A.E.K.); (E.B.); (C.G.)
| | - Daniela Ramaccini
- Department of Medical Sciences, Laboratory for Technologies of Advanced Therapies (LTTA), University of Ferrara, 44121 Ferrara, Italy; (S.P.); (D.R.); (G.M.); (G.P.); (A.E.K.); (E.B.); (C.G.)
| | - Giampaolo Morciano
- Department of Medical Sciences, Laboratory for Technologies of Advanced Therapies (LTTA), University of Ferrara, 44121 Ferrara, Italy; (S.P.); (D.R.); (G.M.); (G.P.); (A.E.K.); (E.B.); (C.G.)
- Maria Cecilia Hospital, GVM Care & Research, Via Corriera 1, Cotignola, 48033 Ravenna, Italy
| | - Gaia Pedriali
- Department of Medical Sciences, Laboratory for Technologies of Advanced Therapies (LTTA), University of Ferrara, 44121 Ferrara, Italy; (S.P.); (D.R.); (G.M.); (G.P.); (A.E.K.); (E.B.); (C.G.)
- Maria Cecilia Hospital, GVM Care & Research, Via Corriera 1, Cotignola, 48033 Ravenna, Italy
| | - Asrat Endrias Kahsay
- Department of Medical Sciences, Laboratory for Technologies of Advanced Therapies (LTTA), University of Ferrara, 44121 Ferrara, Italy; (S.P.); (D.R.); (G.M.); (G.P.); (A.E.K.); (E.B.); (C.G.)
| | - Esmaa Bouhamida
- Department of Medical Sciences, Laboratory for Technologies of Advanced Therapies (LTTA), University of Ferrara, 44121 Ferrara, Italy; (S.P.); (D.R.); (G.M.); (G.P.); (A.E.K.); (E.B.); (C.G.)
| | - Carlotta Giorgi
- Department of Medical Sciences, Laboratory for Technologies of Advanced Therapies (LTTA), University of Ferrara, 44121 Ferrara, Italy; (S.P.); (D.R.); (G.M.); (G.P.); (A.E.K.); (E.B.); (C.G.)
| | - Mariusz R. Wieckowski
- Laboratory of Mitochondrial Biology and Metabolism, Nencki Institute of Experimental Biology of the Polish Academy of Sciences, 3 Pasteur Str., 02-093 Warsaw, Poland;
| | - Paolo Pinton
- Department of Medical Sciences, Laboratory for Technologies of Advanced Therapies (LTTA), University of Ferrara, 44121 Ferrara, Italy; (S.P.); (D.R.); (G.M.); (G.P.); (A.E.K.); (E.B.); (C.G.)
- Maria Cecilia Hospital, GVM Care & Research, Via Corriera 1, Cotignola, 48033 Ravenna, Italy
- Correspondence: (M.B.); (P.P.)
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45
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Aguti S, Bolduc V, Ala P, Turmaine M, Bönnemann CG, Muntoni F, Zhou H. Exon-Skipping Oligonucleotides Restore Functional Collagen VI by Correcting a Common COL6A1 Mutation in Ullrich CMD. MOLECULAR THERAPY-NUCLEIC ACIDS 2020; 21:205-216. [PMID: 32585628 PMCID: PMC7321786 DOI: 10.1016/j.omtn.2020.05.029] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/07/2020] [Revised: 05/12/2020] [Accepted: 05/26/2020] [Indexed: 11/19/2022]
Abstract
Collagen VI-related congenital muscular dystrophies (COL6-CMDs) are the second most common form of congenital muscular dystrophy. Currently, there is no effective treatment available. COL6-CMDs are caused by recessive or dominant mutations in one of the three genes encoding for the α chains of collagen type VI (COL6A1, COL6A2, and COL6A3). One of the most common mutations in COL6-CMD patients is a de novo deep intronic c.930+189C > T mutation in COL6A1 gene. This mutation creates a cryptic donor splice site and induces incorporation of a novel in-frame pseudo-exon in the mature transcripts. In this study, we systematically evaluated the splice switching approach using antisense oligonucleotides (ASOs) to correct this mutation. Fifteen ASOs were designed using the RNA-tiling approach to target the misspliced pseudo-exon and its flanking sequences. The efficiency of ASOs was evaluated at RNA, protein, and structural levels in skin fibroblasts established from four patients carrying the c.930+189C > T mutation. We identified two additional lead ASO candidates that efficiently induce pseudo-exon exclusion from the mature transcripts, thus allowing for the restoration of a functional collagen VI microfibrillar matrix. Our findings provide further evidence for ASO exon skipping as a therapeutic approach for COL6-CMD patients carrying this common intronic mutation.
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Affiliation(s)
- Sara Aguti
- The Dubowitz Neuromuscular Centre, Molecular Neurosciences Section, Developmental Neurosciences Research and Teaching Department, Great Ormond Street Institute of Child Health, University College London, 30 Guilford Street, London WC1N 1EH, UK
| | - Véronique Bolduc
- Neuromuscular and Neurogenetic Disorders of Childhood Section, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, Maryland MD 20892, USA
| | - Pierpaolo Ala
- The Dubowitz Neuromuscular Centre, Molecular Neurosciences Section, Developmental Neurosciences Research and Teaching Department, Great Ormond Street Institute of Child Health, University College London, 30 Guilford Street, London WC1N 1EH, UK
| | - Mark Turmaine
- Division of Biosciences, University College London, Gower Street, London WC1E 6BT, UK
| | - Carsten G Bönnemann
- Neuromuscular and Neurogenetic Disorders of Childhood Section, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, Maryland MD 20892, USA
| | - Francesco Muntoni
- The Dubowitz Neuromuscular Centre, Molecular Neurosciences Section, Developmental Neurosciences Research and Teaching Department, Great Ormond Street Institute of Child Health, University College London, 30 Guilford Street, London WC1N 1EH, UK; NIHR Great Ormond Street Hospital Biomedical Research Centre, London WC1N 1EH, UK.
| | - Haiyan Zhou
- NIHR Great Ormond Street Hospital Biomedical Research Centre, London WC1N 1EH, UK; Genetics and Genomic Medicine Research and Teaching Department, Great Ormond Street Institute of Child Health, University College London, London WC1N 1EH, UK.
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46
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Nederveen JP, Joanisse S, Thomas ACQ, Snijders T, Manta K, Bell KE, Phillips SM, Kumbhare D, Parise G. Age‐related changes to the satellite cell niche are associated with reduced activation following exercise. FASEB J 2020; 34:8975-8989. [DOI: 10.1096/fj.201900787r] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2019] [Revised: 03/18/2020] [Accepted: 03/31/2020] [Indexed: 01/18/2023]
Affiliation(s)
| | - Sophie Joanisse
- Department of Kinesiology McMaster University Hamilton ON Canada
| | | | - Tim Snijders
- Department of Kinesiology McMaster University Hamilton ON Canada
- Human Biology NUTRIM School of Nutrition and Translational Research in Metabolism Maastricht University Medical Center+ Maastricht the Netherlands
| | - Katherine Manta
- Department of Kinesiology McMaster University Hamilton ON Canada
| | - Kirsten E. Bell
- Department of Kinesiology McMaster University Hamilton ON Canada
| | | | | | - Gianni Parise
- Department of Kinesiology McMaster University Hamilton ON Canada
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47
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Abstract
PURPOSE OF REVIEW Congenital muscular dystrophies and congenital myopathies are a heterogeneous group of disorders resulting in hypotonia, muscle weakness, and dystrophic or myopathic features on muscle biopsy. This article summarizes the clinical and genetic aspects of these disorders. RECENT FINDINGS Historically, diagnoses of congenital muscular dystrophy and congenital myopathy have been made by clinical features and histopathology; however, recent advances in genetics have changed diagnostic practice by relying more heavily on genetic findings. This article reviews the clinical and genetic features of the most common congenital muscular dystrophies including laminin subunit alpha 2 (LAMA2)-related (merosin deficient), collagen VI-related, and α-dystroglycan-related congenital muscular dystrophies and reviews the most common congenital myopathies including nemaline rod, core, and centronuclear myopathies. With the increasing accessibility of genetic testing, the number of genes found to be associated with these disorders has increased dramatically. A wide spectrum of severity and onset (from birth to adulthood) exist across all subtypes. Progression and other features are variable depending on the subtype and severity of the specific genetic mutation. SUMMARY Congenital muscular dystrophy and congenital myopathy are increasingly recognized disorders. A growing appreciation for the breadth of phenotypic variability and overlap between established subtypes has challenged long-standing phenotypic and histopathologic classifications of these disorders but has driven a greater understanding of pathogenesis and opened the door to the development of novel treatments.
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48
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Stavusis J, Micule I, Wright NT, Straub V, Topf A, Panadés-de Oliveira L, Domínguez-González C, Inashkina I, Kidere D, Chrestian N, Lace B. Collagen VI-related limb-girdle syndrome caused by frequent mutation in COL6A3 gene with conflicting reports of pathogenicity. Neuromuscul Disord 2020; 30:483-491. [PMID: 32448721 DOI: 10.1016/j.nmd.2020.03.010] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2019] [Revised: 03/26/2020] [Accepted: 03/30/2020] [Indexed: 11/28/2022]
Abstract
Recently the scientific community has started to view Bethlem myopathy 1 and Ullrich congenital muscular dystrophy as two extremes of a collagen VI-related myopathy spectrum rather than two separate entities, as both are caused by mutations in one of the collagen VI genes. Here we report three individuals in two families who are homozygous for a COL6A3 mutation (c.7447A> G; p.Lys2483Glu), and compare their clinical features with seven previously published cases. Individuals carrying homozygous or compound heterozygous c.7447A> G, (p.Lys2483Glu) mutation exhibit mild phenotype without loss of ambulation, similar to the cases described previously as Collagen VI-related limb-girdle syndrome. The phenotype could arise due to an aberrant assembly of Von Willebrand factor A domains. Based on these data, we propose that c.7447A> G, (p.Lys2483Glu) is a common pathogenic mutation.
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Affiliation(s)
- Janis Stavusis
- Latvian Biomedical Research and Study Centre, Ratsupites 1, Riga LV-1067, Latvia.
| | - Ieva Micule
- Latvian Biomedical Research and Study Centre, Ratsupites 1, Riga LV-1067, Latvia
| | - Nathan T Wright
- Department of Chemistry and Biochemistry, James Madison University, Harrisonburg, VA 22807, United States
| | - Volker Straub
- Institute of Genetic Medicine, Newcastle University and Newcastle Hospitals NHS Foundation Trust, Central Parkway, Newcastle upon Tyne, UK
| | - Ana Topf
- Institute of Genetic Medicine, Newcastle University and Newcastle Hospitals NHS Foundation Trust, Central Parkway, Newcastle upon Tyne, UK
| | - Luísa Panadés-de Oliveira
- Department of Neurology, Hospital Universitario 12 de Octubre, Av. de Córdoba, s/n, 28,041, Madrid, Spain
| | | | - Inna Inashkina
- Latvian Biomedical Research and Study Centre, Ratsupites 1, Riga LV-1067, Latvia
| | - Dita Kidere
- Latvian Biomedical Research and Study Centre, Ratsupites 1, Riga LV-1067, Latvia
| | - Nicolas Chrestian
- Child neurology department, CHUQ, Laval University, 2325 Rue de l'Université, Quebec City, Canada
| | - Baiba Lace
- Latvian Biomedical Research and Study Centre, Ratsupites 1, Riga LV-1067, Latvia; Medical Genetics department, CHUQ, 2705 Blvd Laurier, Quebec City, Canada
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Ahmad K, Shaikh S, Ahmad SS, Lee EJ, Choi I. Cross-Talk Between Extracellular Matrix and Skeletal Muscle: Implications for Myopathies. Front Pharmacol 2020; 11:142. [PMID: 32184725 PMCID: PMC7058629 DOI: 10.3389/fphar.2020.00142] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2019] [Accepted: 02/04/2020] [Indexed: 12/13/2022] Open
Abstract
Skeletal muscle (SM) comprises around 40% of total body weight and is among the most important plastic tissues, as it supports skeletal development, controls body temperature, and manages glucose levels. Extracellular matrix (ECM) maintains the integrity of SM, enables biochemical signaling, provides structural support, and plays a vital role during myogenesis. Several human diseases are coupled with dysfunctions of the ECM, and several ECM components are involved in disease pathologies that affect almost all organ systems. Thus, mutations in ECM genes that encode proteins and their transmembrane receptors can result in diverse SM diseases, a large proportion of which are types of fibrosis and muscular dystrophy. In this review, we present major ECM components of SMs related to muscle-associated diseases, and discuss two major ECM myopathies, namely, collagen myopathy and laminin myopathies, and their therapeutic managements. A comprehensive understanding of the mechanisms underlying these ECM-related myopathies would undoubtedly aid the discovery of novel treatments for these devastating diseases.
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Affiliation(s)
- Khurshid Ahmad
- Department of Medical Biotechnology, Yeungnam University, Gyeongsan, South Korea
| | - Sibhghatulla Shaikh
- Department of Medical Biotechnology, Yeungnam University, Gyeongsan, South Korea
| | - Syed Sayeed Ahmad
- Department of Medical Biotechnology, Yeungnam University, Gyeongsan, South Korea
| | - Eun Ju Lee
- Department of Medical Biotechnology, Yeungnam University, Gyeongsan, South Korea
| | - Inho Choi
- Department of Medical Biotechnology, Yeungnam University, Gyeongsan, South Korea
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50
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Hamdan N, Alkasir R, Fan YS, Li Q, Li HH, Dong SQ, Fan K, Liu ZJ. Transcriptome Analysis and Characterized Differentially Regulated Genes Between Treated and Untreated SaOS-2 Cells with Baicalein. INT J PHARMACOL 2020. [DOI: 10.3923/ijp.2020.164.180] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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