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Calabrò S, Nogara L, Jian Y, Valentin M, Bizzotto D, Braghetta P, Russo L, Gambarotto L, Blaauw B, Hashemolhosseini S, Bonaldo P, Cescon M. Salbutamol repurposing ameliorates neuromuscular junction defects and muscle atrophy in Col6a1 -/- mouse model of collagen VI-related myopathies. Clin Transl Med 2024; 14:e1688. [PMID: 38984773 PMCID: PMC11234414 DOI: 10.1002/ctm2.1688] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2023] [Revised: 03/25/2024] [Accepted: 04/24/2024] [Indexed: 07/11/2024] Open
Affiliation(s)
- Sonia Calabrò
- Department of Molecular MedicineUniversity of PadovaPadovaItaly
- Department of BiologyUniversity of PadovaPadovaItaly
| | - Leonardo Nogara
- Department of Biomedical SciencesUniversity of PadovaPadovaItaly
- Venetian Institute of Molecular MedicinePadovaItaly
- Department of Pharmaceutical and Pharmacological SciencesUniversity of PadovaPadovaItaly
| | - Yongzhi Jian
- Institut für BiochemieFriedrich‐Alexander‐Universität Erlangen‐NürnbergErlangenGermany
| | - Manuel Valentin
- Institut für BiochemieFriedrich‐Alexander‐Universität Erlangen‐NürnbergErlangenGermany
| | - Dario Bizzotto
- Department of Molecular MedicineUniversity of PadovaPadovaItaly
| | - Paola Braghetta
- Department of Molecular MedicineUniversity of PadovaPadovaItaly
| | - Loris Russo
- Department of Molecular MedicineUniversity of PadovaPadovaItaly
| | - Lisa Gambarotto
- Department of Molecular MedicineUniversity of PadovaPadovaItaly
| | - Bert Blaauw
- Department of Biomedical SciencesUniversity of PadovaPadovaItaly
- Venetian Institute of Molecular MedicinePadovaItaly
| | - Said Hashemolhosseini
- Institut für BiochemieFriedrich‐Alexander‐Universität Erlangen‐NürnbergErlangenGermany
| | - Paolo Bonaldo
- Department of Molecular MedicineUniversity of PadovaPadovaItaly
| | - Matilde Cescon
- Department of Molecular MedicineUniversity of PadovaPadovaItaly
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2
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Gariballa N, Mohamed F, Badawi S, Ali BR. The double whammy of ER-retention and dominant-negative effects in numerous autosomal dominant diseases: significance in disease mechanisms and therapy. J Biomed Sci 2024; 31:64. [PMID: 38937821 PMCID: PMC11210014 DOI: 10.1186/s12929-024-01054-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2024] [Accepted: 06/20/2024] [Indexed: 06/29/2024] Open
Abstract
The endoplasmic reticulum (ER) employs stringent quality control mechanisms to ensure the integrity of protein folding, allowing only properly folded, processed and assembled proteins to exit the ER and reach their functional destinations. Mutant proteins unable to attain their correct tertiary conformation or form complexes with their partners are retained in the ER and subsequently degraded through ER-associated protein degradation (ERAD) and associated mechanisms. ER retention contributes to a spectrum of monogenic diseases with diverse modes of inheritance and molecular mechanisms. In autosomal dominant diseases, when mutant proteins get retained in the ER, they can interact with their wild-type counterparts. This interaction may lead to the formation of mixed dimers or aberrant complexes, disrupting their normal trafficking and function in a dominant-negative manner. The combination of ER retention and dominant-negative effects has been frequently documented to cause a significant loss of functional proteins, thereby exacerbating disease severity. This review aims to examine existing literature and provide insights into the impact of dominant-negative effects exerted by mutant proteins retained in the ER in a range of autosomal dominant diseases including skeletal and connective tissue disorders, vascular disorders, neurological disorders, eye disorders and serpinopathies. Most crucially, we aim to emphasize the importance of this area of research, offering substantial potential for understanding the factors influencing phenotypic variability associated with genetic variants. Furthermore, we highlight current and prospective therapeutic approaches targeted at ameliorating the effects of mutations exhibiting dominant-negative effects. These approaches encompass experimental studies exploring treatments and their translation into clinical practice.
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Affiliation(s)
- Nesrin Gariballa
- Department of Genetics and Genomics, College of Medicine and Health Sciences, United Arab Emirates University, P.O. Box: 15551, Al-Ain, United Arab Emirates
| | - Feda Mohamed
- Department of Genetics and Genomics, College of Medicine and Health Sciences, United Arab Emirates University, P.O. Box: 15551, Al-Ain, United Arab Emirates
- ASPIRE Precision Medicine Research Institute Abu Dhabi, United Arab Emirates University, Abu Dhabi, United Arab Emirates
| | - Sally Badawi
- Department of Genetics and Genomics, College of Medicine and Health Sciences, United Arab Emirates University, P.O. Box: 15551, Al-Ain, United Arab Emirates
| | - Bassam R Ali
- Department of Genetics and Genomics, College of Medicine and Health Sciences, United Arab Emirates University, P.O. Box: 15551, Al-Ain, United Arab Emirates.
- ASPIRE Precision Medicine Research Institute Abu Dhabi, United Arab Emirates University, Abu Dhabi, United Arab Emirates.
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3
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Rawls A, Diviak BK, Smith CI, Severson GW, Acosta SA, Wilson-Rawls J. Pharmacotherapeutic Approaches to Treatment of Muscular Dystrophies. Biomolecules 2023; 13:1536. [PMID: 37892218 PMCID: PMC10605463 DOI: 10.3390/biom13101536] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2023] [Revised: 10/10/2023] [Accepted: 10/11/2023] [Indexed: 10/29/2023] Open
Abstract
Muscular dystrophies are a heterogeneous group of genetic muscle-wasting disorders that are subdivided based on the region of the body impacted by muscle weakness as well as the functional activity of the underlying genetic mutations. A common feature of the pathophysiology of muscular dystrophies is chronic inflammation associated with the replacement of muscle mass with fibrotic scarring. With the progression of these disorders, many patients suffer cardiomyopathies with fibrosis of the cardiac tissue. Anti-inflammatory glucocorticoids represent the standard of care for Duchenne muscular dystrophy, the most common muscular dystrophy worldwide; however, long-term exposure to glucocorticoids results in highly adverse side effects, limiting their use. Thus, it is important to develop new pharmacotherapeutic approaches to limit inflammation and fibrosis to reduce muscle damage and promote repair. Here, we examine the pathophysiology, genetic background, and emerging therapeutic strategies for muscular dystrophies.
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Affiliation(s)
- Alan Rawls
- School of Life Sciences, Arizona State University, Tempe, AZ 85287-4501, USA; (B.K.D.); (C.I.S.); (G.W.S.); (S.A.A.)
| | - Bridget K. Diviak
- School of Life Sciences, Arizona State University, Tempe, AZ 85287-4501, USA; (B.K.D.); (C.I.S.); (G.W.S.); (S.A.A.)
- Molecular and Cellular Biology Graduate Program, School of Life Sciences, Tempe, AZ 85287 4501, USA
| | - Cameron I. Smith
- School of Life Sciences, Arizona State University, Tempe, AZ 85287-4501, USA; (B.K.D.); (C.I.S.); (G.W.S.); (S.A.A.)
- Molecular and Cellular Biology Graduate Program, School of Life Sciences, Tempe, AZ 85287 4501, USA
| | - Grant W. Severson
- School of Life Sciences, Arizona State University, Tempe, AZ 85287-4501, USA; (B.K.D.); (C.I.S.); (G.W.S.); (S.A.A.)
- Molecular and Cellular Biology Graduate Program, School of Life Sciences, Tempe, AZ 85287 4501, USA
| | - Sofia A. Acosta
- School of Life Sciences, Arizona State University, Tempe, AZ 85287-4501, USA; (B.K.D.); (C.I.S.); (G.W.S.); (S.A.A.)
- Molecular and Cellular Biology Graduate Program, School of Life Sciences, Tempe, AZ 85287 4501, USA
| | - Jeanne Wilson-Rawls
- School of Life Sciences, Arizona State University, Tempe, AZ 85287-4501, USA; (B.K.D.); (C.I.S.); (G.W.S.); (S.A.A.)
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4
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Ryu Y, Hwang JS, Bo Noh K, Park SH, Seo JH, Shin YJ. Adipose Mesenchymal Stem Cell-Derived Exosomes Promote the Regeneration of Corneal Endothelium Through Ameliorating Senescence. Invest Ophthalmol Vis Sci 2023; 64:29. [PMID: 37850944 PMCID: PMC10593138 DOI: 10.1167/iovs.64.13.29] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2023] [Accepted: 09/14/2023] [Indexed: 10/19/2023] Open
Abstract
Purpose Human corneal endothelial cells (hCECs) have been considered unable to regenerate in vivo, resulting in corneal decompensation after significant loss of hCECs. adipose-derived mesenchymal stem cell (ASC)-derived exosomes can regenerate tissues and organs. In this study, we investigated whether ASC-derived exosomes could protect and regenerate CECs. Methods We performed cell viability and cell-cycle analyses to evaluate the effect of ASC-derived exosomes on the regeneration capacity of cultured hCECs. Transforming growth factor-β (TGF-β) and hydrogen peroxide (H2O2) were used to induce biological stress in CECs. The effect of ASC-derived exosomes on CECs was investigated in vivo. ASC-derived exosomes were introduced into rat CECs using electroporation, and rat corneas were injured using cryoinjury. Next-generation sequencing analysis was performed to compare the differentially expressed microRNAs (miRNAs) between ASC-derived and hCEC-derived exosomes. Results ASC-derived exosomes induced CEC proliferation and suppressed TGF-β- or H2O2-induced oxidative stress and senescence. ASC-derived exosomes protect hCECs against TGF-β- or H2O2-induced endothelial-mesenchymal transition and mitophagy. In an in vivo study, ASC-derived exosomes promoted wound healing of rat CECs and protected the corneal endothelium against cryoinjury-induced corneal endothelium damage. Next-generation sequencing analysis revealed differentially expressed miRNAs for ASC-derived and hCEC-derived exosomes. They are involved in lysine degradation, adherens junction, the TGF-β signaling pathway, the p53 signaling pathway, the Hippo signaling pathway, the forkhead box O (FoxO) signaling pathway, regulation of actin cytoskeleton, and RNA degradation based on Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway analysis. Conclusions ASC-derived exosomes promoted wound healing and regeneration of endothelial cells by inducing a shift in the cell cycle and suppressing senescence and autophagy.
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Affiliation(s)
- Yunkyoung Ryu
- Department of Ophthalmology, Hallym University Medical Center, Hallym University College of Medicine, Seoul, Republic of Korea
- Hallym BioEyeTech Research Center, Hallym University College of Medicine, Seoul, Republic of Korea
| | - Jin Sun Hwang
- Department of Ophthalmology, Hallym University Medical Center, Hallym University College of Medicine, Seoul, Republic of Korea
- Hallym BioEyeTech Research Center, Hallym University College of Medicine, Seoul, Republic of Korea
| | - Kyung Bo Noh
- Department of Ophthalmology, Hallym University Medical Center, Hallym University College of Medicine, Seoul, Republic of Korea
| | - Se Hie Park
- Department of Ophthalmology, Hallym University Medical Center, Hallym University College of Medicine, Seoul, Republic of Korea
- Hallym BioEyeTech Research Center, Hallym University College of Medicine, Seoul, Republic of Korea
| | - Je Hyun Seo
- Veterans Medical Research Institute, Veterans Health Service Medical Center, Seoul, Republic of Korea
| | - Young Joo Shin
- Department of Ophthalmology, Hallym University Medical Center, Hallym University College of Medicine, Seoul, Republic of Korea
- Hallym BioEyeTech Research Center, Hallym University College of Medicine, Seoul, Republic of Korea
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5
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Picker SM, Parker G, Gissen P. Features of Congenital Arthrogryposis Due to Abnormalities in Collagen Homeostasis, a Scoping Review. Int J Mol Sci 2023; 24:13545. [PMID: 37686358 PMCID: PMC10487887 DOI: 10.3390/ijms241713545] [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: 07/15/2023] [Revised: 08/30/2023] [Accepted: 08/30/2023] [Indexed: 09/10/2023] Open
Abstract
Congenital arthrogryposis (CA) refers to the presence of multiple contractures at birth. It is a feature of several inherited syndromes, notable amongst them are disorders of collagen formation. This review aims to characterize disorders that directly or indirectly impact collagen structure and function leading to CA in search for common phenotypic or pathophysiological features, possible genotype-phenotype correlation, and potential novel treatment approaches based on a better understanding of the underlying pathomechanism. Nine genes, corresponding to five clinical phenotypes, were identified after a literature search. The most notable trend was the extreme phenotype variability. Clinical features across all syndromes ranged from subtle with minimal congenital contractures, to severe with multiple congenital contractures and extra-articular features including skin, respiratory, or other manifestations. Five of the identified genes were involved in the function of the Lysyl Hydroxylase 2 or 3 enzymes, which enable the hydroxylation and/or glycosylation of lysyl residues to allow the formation of the collagen superstructure. Whilst current treatment approaches are post-natal surgical correction, there are also potential in-utero therapies being developed. Cyclosporin A showed promise in treating collagen VI disorders although there is an associated risk of immunosuppression. The treatments that could be in the clinical trials soon are the splice correction therapies in collagen VI-related disorders.
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Affiliation(s)
| | - George Parker
- Newcastle University Medical School, Newcastle NE2 4HH, UK;
| | - Paul Gissen
- National Institute for Health Research Great Ormond Street Hospital Biomedical Research Centre, University College London, London WC1N 1EH, UK
- Genetics and Genomic Medicine Department, Great Ormond Street Institute of Child Health, University College London, London WC1N 1EH, UK
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6
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Merlini L, Sabatelli P, Gualandi F, Redivo E, Di Martino A, Faldini C. New Clinical and Immunofluoresence Data of Collagen VI-Related Myopathy: A Single Center Cohort of 69 Patients. Int J Mol Sci 2023; 24:12474. [PMID: 37569848 PMCID: PMC10420187 DOI: 10.3390/ijms241512474] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2023] [Revised: 07/30/2023] [Accepted: 08/04/2023] [Indexed: 08/13/2023] Open
Abstract
Pathogenetic mechanism recognition and proof-of-concept clinical trials were performed in our patients affected by collagen VI-related myopathies. This study, which included 69 patients, aimed to identify innovative clinical data to better design future trials. Among the patients, 33 had Bethlem myopathy (BM), 24 had Ullrich congenital muscular dystrophy (UCMD), 7 had an intermediate phenotype (INTM), and five had myosclerosis myopathy (MM). We obtained data on muscle strength, the degree of contracture, immunofluorescence, and genetics. In our BM group, only one third had a knee extension strength greater than 50% of the predicted value, while only one in ten showed similar retention of elbow flexion. These findings should be considered when recruiting BM patients for future trials. All the MM patients had axial and limb contractures that limited both the flexion and extension ranges of motion, and a limitation in mouth opening. The immunofluorescence analysis of collagen VI in 55 biopsies from 37 patients confirmed the correlation between collagen VI defects and the severity of the clinical phenotype. However, biopsies from the same patient or from patients with the same mutation taken at different times showed a progressive increase in protein expression with age. The new finding of the time-dependent modulation of collagen VI expression should be considered in genetic correction trials.
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Affiliation(s)
- Luciano Merlini
- Department of Biomedical and Neuromotor Sciences, University of Bologna, 40126 Bologna, Italy;
| | - Patrizia Sabatelli
- Unit of Bologna, CNR-Institute of Molecular Genetics “Luigi Cavalli Sforza”, 40136 Bologna, Italy;
- IRCCS Istituto Ortopedico Rizzoli, 40136 Bologna, Italy
| | - Francesca Gualandi
- Department of Medical Sciences, Unit of Medical Genetics, Università degli Studi di Ferrara, 44100 Ferrara, Italy;
| | - Edoardo Redivo
- Department of Statistical Sciences, University of Bologna, 40126 Bologna, Italy;
| | - Alberto Di Martino
- Department of Biomedical and Neuromotor Sciences, University of Bologna, 40126 Bologna, Italy;
- I Orthopedic and Traumatology Department, IRCCS Istituto Ortopedico Rizzoli, 40136 Bologna, Italy
| | - Cesare Faldini
- Department of Biomedical and Neuromotor Sciences, University of Bologna, 40126 Bologna, Italy;
- I Orthopedic and Traumatology Department, IRCCS Istituto Ortopedico Rizzoli, 40136 Bologna, Italy
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7
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Mohassel P, Rooney J, Zou Y, Johnson K, Norato G, Hearn H, Nalls MA, Yun P, Ogata T, Silverstein S, Sleboda DA, Roberts TJ, Rifkin DB, Bönnemann CG. Collagen type VI regulates TGFβ bioavailability in skeletal muscle. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.06.22.545964. [PMID: 38586035 PMCID: PMC10996771 DOI: 10.1101/2023.06.22.545964] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/09/2024]
Abstract
Collagen VI-related disorders (COL6-RDs) are a group of rare muscular dystrophies caused by pathogenic variants in collagen VI genes (COL6A1, COL6A2, and COL6A3). Collagen type VI is a heterotrimeric, microfibrillar component of the muscle extracellular matrix (ECM), predominantly secreted by resident fibroadipogenic precursor cells in skeletal muscle. The absence or mislocalizatoion of collagen VI in the ECM underlies the non-cell autonomous dysfunction and dystrophic changes in skeletal muscle with an as of yet elusive direct mechanistic link between the ECM and myofiber dysfunction. Here, we conduct a comprehensive natural history and outcome study in a novel mouse model of COL6-RDs (Col6a2-/- mice) using standardized (Treat-NMD) functional, histological, and physiologic parameter. Notably, we identify a conspicuous dysregulation of the TGFβ pathway early in the disease process and propose that the collagen VI deficient matrix is not capable of regulating the dynamic TGFβ bioavailability at baseline and also in response to muscle injury. Thus, we propose a new mechanism for pathogenesis of the disease that links the ECM regulation of TGFβ with downstream skeletal muscle abnormalities, paving the way for developing and validating therapeutics that target this pathway.
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Affiliation(s)
- Payam Mohassel
- National Institutes of Health, National Institute of Neurological Disorders and Stroke, Neuromuscular and Neurogenetic Disorders of Childhood Section, Bethesda, MD, USA
- Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Jachinta Rooney
- National Institutes of Health, National Institute of Neurological Disorders and Stroke, Neuromuscular and Neurogenetic Disorders of Childhood Section, Bethesda, MD, USA
| | - Yaqun Zou
- National Institutes of Health, National Institute of Neurological Disorders and Stroke, Neuromuscular and Neurogenetic Disorders of Childhood Section, Bethesda, MD, USA
| | - Kory Johnson
- Bioinformatics Section, Intramural Information Technology & Bioinformatics Program, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD, USA
| | - Gina Norato
- Clinical Trials Unit, National Institutes of Health, National Institute of Neurological Disorders and Stroke, Bethesda, MD, USA
| | - Hailey Hearn
- Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Matthew A Nalls
- National Institutes of Health, National Institute of Neurological Disorders and Stroke, Neuromuscular and Neurogenetic Disorders of Childhood Section, Bethesda, MD, USA
| | - Pomi Yun
- National Institutes of Health, National Institute of Neurological Disorders and Stroke, Neuromuscular and Neurogenetic Disorders of Childhood Section, Bethesda, MD, USA
| | - Tracy Ogata
- National Institutes of Health, National Institute of Neurological Disorders and Stroke, Neuromuscular and Neurogenetic Disorders of Childhood Section, Bethesda, MD, USA
| | - Sarah Silverstein
- National Institutes of Health, National Institute of Neurological Disorders and Stroke, Neuromuscular and Neurogenetic Disorders of Childhood Section, Bethesda, MD, USA
| | - David A Sleboda
- Department of Ecology and Evolutionary Biology, University of California, Irvine, Irvine, CA, USA
| | - Thomas J Roberts
- Department of Ecology and Evolutionary Biology, Brown University, Providence, RI, USA
| | - Daniel B Rifkin
- Department of Cell Biology, New York University School of Medicine, New York, NY, USA
| | - Carsten G Bönnemann
- National Institutes of Health, National Institute of Neurological Disorders and Stroke, Neuromuscular and Neurogenetic Disorders of Childhood Section, Bethesda, MD, USA
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8
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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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9
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Younger DS. Childhood muscular dystrophies. HANDBOOK OF CLINICAL NEUROLOGY 2023; 195:461-496. [PMID: 37562882 DOI: 10.1016/b978-0-323-98818-6.00024-8] [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: 08/12/2023]
Abstract
Infancy- and childhood-onset muscular dystrophies are associated with a characteristic distribution and progression of motor dysfunction. The underlying causes of progressive childhood muscular dystrophies are heterogeneous involving diverse genetic pathways and genes that encode proteins of the plasma membrane, extracellular matrix, sarcomere, and nuclear membrane components. The prototypical clinicopathological features in an affected child may be adequate to fully distinguish it from other likely diagnoses based on four common features: (1) weakness and wasting of pelvic-femoral and scapular muscles with involvement of heart muscle; (2) elevation of serum muscle enzymes in particular serum creatine kinase; (3) necrosis and regeneration of myofibers; and (4) molecular neurogenetic assessment particularly utilizing next-generation sequencing of the genome of the likeliest candidates genes in an index case or family proband. A number of different animal models of therapeutic strategies have been developed for gene transfer therapy, but so far these techniques have not yet entered clinical practice. Treatment remains for the most part symptomatic with the goal of ameliorating locomotor and cardiorespiratory manifestations of the disease.
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Affiliation(s)
- David S Younger
- Department of Clinical Medicine and Neuroscience, CUNY School of Medicine, New York, NY, United States; Department of Medicine, Section of Internal Medicine and Neurology, White Plains Hospital, White Plains, NY, United States.
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10
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Gineste C, Youhanna S, Vorrink SU, Henriksson S, Hernández A, Cheng AJ, Chaillou T, Buttgereit A, Schneidereit D, Friedrich O, Hultenby K, Bruton JD, Ivarsson N, Sandblad L, Lauschke VM, Westerblad H. Enzymatically dissociated muscle fibers display rapid dedifferentiation and impaired mitochondrial calcium control. iScience 2022; 25:105654. [PMID: 36479146 PMCID: PMC9720020 DOI: 10.1016/j.isci.2022.105654] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2022] [Revised: 07/19/2022] [Accepted: 11/18/2022] [Indexed: 11/23/2022] Open
Abstract
Cells rapidly lose their physiological phenotype upon disruption of their extracellular matrix (ECM)-intracellular cytoskeleton interactions. By comparing adult mouse skeletal muscle fibers, isolated either by mechanical dissection or by collagenase-induced ECM digestion, we investigated acute effects of ECM disruption on cellular and mitochondrial morphology, transcriptomic signatures, and Ca2+ handling. RNA-sequencing showed striking differences in gene expression patterns between the two isolation methods with enzymatically dissociated fibers resembling myopathic phenotypes. Mitochondrial appearance was grossly similar in the two groups, but 3D electron microscopy revealed shorter and less branched mitochondria following enzymatic dissociation. Repeated contractions resulted in a prolonged mitochondrial Ca2+ accumulation in enzymatically dissociated fibers, which was partially prevented by cyclophilin inhibitors. Of importance, muscle fibers of mice with severe mitochondrial myopathy show pathognomonic mitochondrial Ca2+ accumulation during repeated contractions and this accumulation was concealed with enzymatic dissociation, making this an ambiguous method in studies of native intracellular Ca2+ fluxes.
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Affiliation(s)
- Charlotte Gineste
- Department of Physiology and Pharmacology, Karolinska Institutet, 171 77 Stockholm, Sweden
| | - Sonia Youhanna
- Department of Physiology and Pharmacology, Karolinska Institutet, 171 77 Stockholm, Sweden
| | - Sabine U. Vorrink
- Department of Physiology and Pharmacology, Karolinska Institutet, 171 77 Stockholm, Sweden
| | - Sara Henriksson
- Umeå Core Facility for Electron Microscopy, Department of Chemistry, Umeå University, 901 87 Umeå, Sweden
| | - Andrés Hernández
- Department of Physiology and Pharmacology, Karolinska Institutet, 171 77 Stockholm, Sweden
| | - Arthur J. Cheng
- Department of Physiology and Pharmacology, Karolinska Institutet, 171 77 Stockholm, Sweden
| | - Thomas Chaillou
- Department of Physiology and Pharmacology, Karolinska Institutet, 171 77 Stockholm, Sweden
| | - Andreas Buttgereit
- Institute of Medical Biotechnology, Department of Chemical and Biological Engineering, Friedrich-Alexander University of Erlangen-Nürnberg, 91052 Erlangen, Germany
| | - Dominik Schneidereit
- Institute of Medical Biotechnology, Department of Chemical and Biological Engineering, Friedrich-Alexander University of Erlangen-Nürnberg, 91052 Erlangen, Germany
| | - Oliver Friedrich
- Institute of Medical Biotechnology, Department of Chemical and Biological Engineering, Friedrich-Alexander University of Erlangen-Nürnberg, 91052 Erlangen, Germany
| | - Kjell Hultenby
- Department of Laboratory Medicine, Karolinska Institutet, Karolinska University Hospital Huddinge, 141 86 Huddinge, Sweden
| | - Joseph D. Bruton
- Department of Physiology and Pharmacology, Karolinska Institutet, 171 77 Stockholm, Sweden
| | - Niklas Ivarsson
- Department of Physiology and Pharmacology, Karolinska Institutet, 171 77 Stockholm, Sweden
| | - Linda Sandblad
- Umeå Core Facility for Electron Microscopy, Department of Chemistry, Umeå University, 901 87 Umeå, Sweden
| | - Volker M. Lauschke
- Department of Physiology and Pharmacology, Karolinska Institutet, 171 77 Stockholm, Sweden
- Dr. Margarete Fischer-Bosch-Institute of Clinical Pharmacology, Stuttgart, Germany
- University of Tübingen, Tübingen, Germany
| | - Håkan Westerblad
- Department of Physiology and Pharmacology, Karolinska Institutet, 171 77 Stockholm, Sweden
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11
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Bellissimo CA, Garibotti MC, Perry CGR. Mitochondrial Stress Responses in Duchenne muscular dystrophy: Metabolic Dysfunction or Adaptive Reprogramming? Am J Physiol Cell Physiol 2022; 323:C718-C730. [PMID: 35816642 DOI: 10.1152/ajpcell.00249.2022] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Mitochondrial stress may be a secondary contributor to muscle weakness in inherited muscular dystrophies. Duchenne muscular dystrophy has received the majority of attention whereby most discoveries suggest mitochondrial ATP synthesis may be reduced. However, not all studies support this finding. Furthermore, some studies have reported increased mitochondrial reactive oxygen species and propensity for permeability transition pore formation as an inducer of apoptosis, although divergent findings have also been described. A closer examination of the literature suggests the degree and direction of mitochondrial stress responses may depend on the progression of the disease, the muscle type examined, the mouse model employed with regards to pre-clinical research, the precise metabolic pathways in consideration, and in some cases the in vitro technique used to assess a given mitochondrial bioenergetic function. One intent of this review is to provide careful considerations for future experimental designs to resolve the heterogeneous nature of mitochondrial stress during the progression of Duchenne muscular dystrophy. Such considerations have implications for other muscular dystrophies as well which are addressed briefly herein. A renewed perspective of the term 'mitochondrial dysfunction' is presented whereby stress responses might be re-explored in future investigations as direct contributors to myopathy vs an adaptive 'reprogramming' intended to maintain homeostasis in the face of disease stressors themselves. In so doing, the prospective development of mitochondrial enhancement therapies can be driven by advances in perspectives as much as experimental approaches when resolving the precise relationships between mitochondrial remodelling and muscle weakness in Duchenne and, indeed, other muscular dystrophies.
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Affiliation(s)
- Catherine A Bellissimo
- School of Kinesiology and Health Science, Muscle Health Research Centre, York University, Toronto, ON, Canada
| | - Madison C Garibotti
- School of Kinesiology and Health Science, Muscle Health Research Centre, York University, Toronto, ON, Canada
| | - Christopher G R Perry
- School of Kinesiology and Health Science, Muscle Health Research Centre, York University, Toronto, ON, Canada
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12
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Castroflorio E, Pérez Berná AJ, López-Márquez A, Badosa C, Loza-Alvarez P, Roldán M, Jiménez-Mallebrera C. The Capillary Morphogenesis Gene 2 Triggers the Intracellular Hallmarks of Collagen VI-Related Muscular Dystrophy. Int J Mol Sci 2022; 23:ijms23147651. [PMID: 35886995 PMCID: PMC9322809 DOI: 10.3390/ijms23147651] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2022] [Revised: 07/07/2022] [Accepted: 07/08/2022] [Indexed: 11/16/2022] Open
Abstract
Collagen VI-related disorders (COL6-RD) represent a severe form of congenital disease for which there is no treatment. Dominant-negative pathogenic variants in the genes encoding α chains of collagen VI are the main cause of COL6-RD. Here we report that patient-derived fibroblasts carrying a common single nucleotide variant mutation are unable to build the extracellular collagen VI network. This correlates with the intracellular accumulation of endosomes and lysosomes triggered by the increased phosphorylation of the collagen VI receptor CMG2. Notably, using a CRISPR-Cas9 gene-editing tool to silence the dominant-negative mutation in patients’ cells, we rescued the normal extracellular collagen VI network, CMG2 phosphorylation levels, and the accumulation of endosomes and lysosomes. Our findings reveal an unanticipated role of CMG2 in regulating endosomal and lysosomal homeostasis and suggest that mutated collagen VI dysregulates the intracellular environment in fibroblasts in collagen VI-related muscular dystrophy.
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Affiliation(s)
- Enrico Castroflorio
- ICFO-The Institute of Photonic Sciences, The Barcelona Institute of Science and Technology, 08860 Castelldefels, Spain;
- Correspondence: (E.C.); (C.J.-M.)
| | | | - Arístides López-Márquez
- Laboratorio de Investigación Aplicada en Enfermedades Neuromusculares, Unidad de Patología Neuromuscular, Servicio de Neuropediatría, Institut de Recerca Sant Joan de Déu, 08950 Esplugues de Llobregat, Spain; (A.L.-M.); (C.B.)
- Institut de Recerca Sant Joan de Déu, 08950 Esplugues de Llobregat, Spain;
- Centro de Investigaciones Biomédicas en Red de Enfermedades Rara (CIBERER), 28029 Madrid, Spain
| | - Carmen Badosa
- Laboratorio de Investigación Aplicada en Enfermedades Neuromusculares, Unidad de Patología Neuromuscular, Servicio de Neuropediatría, Institut de Recerca Sant Joan de Déu, 08950 Esplugues de Llobregat, Spain; (A.L.-M.); (C.B.)
- Institut de Recerca Sant Joan de Déu, 08950 Esplugues de Llobregat, Spain;
| | - Pablo Loza-Alvarez
- ICFO-The Institute of Photonic Sciences, The Barcelona Institute of Science and Technology, 08860 Castelldefels, Spain;
| | - Mónica Roldán
- Institut de Recerca Sant Joan de Déu, 08950 Esplugues de Llobregat, Spain;
- Unitat de Microscòpia Confocal i Imatge Cellular, Servei de Medicina Genètica i Molecular, Institut Pediàtric de Malaties Rares (IPER), Hospital Sant Joan de Déu, 08950 Esplugues de Llobregat, Spain
| | - Cecilia Jiménez-Mallebrera
- Laboratorio de Investigación Aplicada en Enfermedades Neuromusculares, Unidad de Patología Neuromuscular, Servicio de Neuropediatría, Institut de Recerca Sant Joan de Déu, 08950 Esplugues de Llobregat, Spain; (A.L.-M.); (C.B.)
- Institut de Recerca Sant Joan de Déu, 08950 Esplugues de Llobregat, Spain;
- Centro de Investigaciones Biomédicas en Red de Enfermedades Rara (CIBERER), 28029 Madrid, Spain
- Department of Genetics, University of Barcelona, 08028 Barcelona, Spain
- Correspondence: (E.C.); (C.J.-M.)
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13
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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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14
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Unbiased Millivolts Assay of Mitochondrial Membrane Potential in Intact Cells. Methods Mol Biol 2022; 2497:11-61. [PMID: 35771433 PMCID: PMC9377305 DOI: 10.1007/978-1-0716-2309-1_2] [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: 01/14/2023]
Abstract
The mitochondrial membrane potential (ΔψM) is the major component of the bioenergetic driving force responsible for most cellular ATP produced, and it controls a host of biological processes. In intact cells, assay readouts with commonly used fluorescence ΔψM probes are distorted by factors other than ΔψM. Here, we describe a protocol to calculate both ΔψM and plasma membrane potential (ΔψP) in absolute millivolts in intact single cells, or in populations of adherent, cultured cells. Our approach generates unbiased data that allows comparison of ΔψM between cell types with different geometry and ΔψP, and to follow ΔψM in time when ΔψP fluctuates. The experimental paradigm results in fluorescence microscopy time courses using a pair of cationic and anionic probes with internal calibration points that are subsequently computationally converted to millivolts on an absolute scale. The assay is compatible with wide field, confocal or two-photon microscopy. The method given here is optimized for a multiplexed, partial 96-well microplate format to record ΔψP and ΔψM responses for three consecutive treatment additions.
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15
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Harada A, Goto M, Kato A, Takenaka-Ninagawa N, Tanaka A, Noguchi S, Ikeya M, Sakurai H. Systemic Supplementation of Collagen VI by Neonatal Transplantation of iPSC-Derived MSCs Improves Histological Phenotype and Function of Col6-Deficient Model Mice. Front Cell Dev Biol 2021; 9:790341. [PMID: 34888314 PMCID: PMC8649773 DOI: 10.3389/fcell.2021.790341] [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: 10/06/2021] [Accepted: 10/25/2021] [Indexed: 11/25/2022] Open
Abstract
Collagen VI is distributed in the interstitium and is secreted mainly by mesenchymal stromal cells (MSCs) in skeletal muscle. Mutations in COL6A1-3 genes cause a spectrum of COL6-related myopathies. In this study, we performed a systemic transplantation study of human-induced pluripotent stem cell (iPSC)-derived MSCs (iMSCs) into neonatal immunodeficient COL6-related myopathy model (Col6a1KO/NSG) mice to validate the therapeutic potential. Engraftment of the donor cells and the resulting rescued collagen VI were observed at the quadriceps and diaphragm after intraperitoneal iMSC transplantation. Transplanted mice showed improvement in pathophysiological characteristics compared with untreated Col6a1KO/NSG mice. In detail, higher muscle regeneration in the transplanted mice resulted in increased muscle weight and enlarged myofibers. Eight-week-old mice showed increased muscle force and performed better in the grip and rotarod tests. Overall, these findings support the concept that systemic iMSC transplantation can be a therapeutic option for COL6-related myopathies.
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Affiliation(s)
- Aya Harada
- Department of Clinical Application, Center for iPS Cell Research and Application (CiRA), Kyoto University, Kyoto, Japan
| | - Megumi Goto
- Department of Clinical Application, Center for iPS Cell Research and Application (CiRA), Kyoto University, Kyoto, Japan
| | - Atsuya Kato
- Department of Clinical Application, Center for iPS Cell Research and Application (CiRA), Kyoto University, Kyoto, Japan
| | - Nana Takenaka-Ninagawa
- Department of Clinical Application, Center for iPS Cell Research and Application (CiRA), Kyoto University, Kyoto, Japan
| | - Akito Tanaka
- Department of Clinical Application, Center for iPS Cell Research and Application (CiRA), Kyoto University, Kyoto, Japan
| | - Satoru Noguchi
- Department of Neuromuscular Research, National Institute of Neuroscience, National Center of Neurology and Psychiatry, Tokyo, Japan
| | - Makoto Ikeya
- Department of Clinical Application, Center for iPS Cell Research and Application (CiRA), Kyoto University, Kyoto, Japan
| | - Hidetoshi Sakurai
- Department of Clinical Application, Center for iPS Cell Research and Application (CiRA), Kyoto University, Kyoto, Japan
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16
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Guadagnin E, Mohassel P, Johnson KR, Yang L, Santi M, Uapinyoying P, Dastgir J, Hu Y, Dillmann A, Cookson MR, Foley AR, Bönnemann CG. Transcriptome analysis of collagen VI-related muscular dystrophy muscle biopsies. Ann Clin Transl Neurol 2021; 8:2184-2198. [PMID: 34729958 PMCID: PMC8607456 DOI: 10.1002/acn3.51450] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2021] [Revised: 08/04/2021] [Accepted: 08/19/2021] [Indexed: 12/15/2022] Open
Abstract
Objective To define the transcriptomic changes responsible for the histologic alterations in skeletal muscle and their progression in collagen VI‐related muscular dystrophy (COL6‐RD). Methods COL6‐RD patient muscle biopsies were stratified into three groups based on the overall level of pathologic severity considering degrees of fibrosis, muscle fiber atrophy, and fatty replacement of muscle tissue. Using microarray and RNA‐Seq, we then performed global gene expression profiling on the same muscle biopsies and compared their transcriptome with age‐ and sex‐matched controls. Results COL6‐RD muscle biopsy transcriptomes as a group revealed prominent upregulation of muscle extracellular matrix component genes and the downregulation of skeletal muscle and mitochondrion‐specific genes. Upregulation of the TGFβ pathway was the most conspicuous change across all biopsies and was fully evident even in the mildest/earliest histological group. There was no difference in the overall transcriptional signature between the different histologic groups but polyserial analysis identified relative changes along with COL6‐RD histological severity. Interpretation Overall, our study establishes the prominent dysregulation of extracellular matrix genes, TGFβ signaling, and its downstream cellular pathways at the transcriptomic level in COL6‐RD muscle.
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Affiliation(s)
- Eleonora Guadagnin
- Neuromuscular and Neurogenetic Disorders of Childhood Section, National Institute of Neurological Disorders and Stroke, National Institutes of Health, 35 Convent Drive, BLDG 35 RM 2A116, Bethesda, Maryland, 20892, USA
| | - Payam Mohassel
- Neuromuscular and Neurogenetic Disorders of Childhood Section, National Institute of Neurological Disorders and Stroke, National Institutes of Health, 35 Convent Drive, BLDG 35 RM 2A116, Bethesda, Maryland, 20892, USA
| | - Kory R Johnson
- Bioinformatics Section, Intramural Information Technology & Bioinformatics Program, National Institute of Neurological Disorders and Stroke, National Institutes of Health, 10 Center Drive, BG 10 RM 5S223, Bethesda, Maryland, 20892, USA
| | - Lin Yang
- Division of Biomedical Informatics, Department of Biomedical Engineering, University of Florida, 1064 Center Drive, NEB 364, Gainsville, Florida, 32611, USA
| | - Mariarita Santi
- Department of Pathology, Children's Hospital of Philadelphia, 324 South 34th Street, Philadelphia, Pennsylvania, 19104, USA
| | - Prech Uapinyoying
- Neuromuscular and Neurogenetic Disorders of Childhood Section, National Institute of Neurological Disorders and Stroke, National Institutes of Health, 35 Convent Drive, BLDG 35 RM 2A116, Bethesda, Maryland, 20892, USA.,Center for Genetic Medicine Research, Children's Research Institute, Children's National Health System, Washington, DC, 20010, USA
| | - Jahannaz Dastgir
- Neuromuscular and Neurogenetic Disorders of Childhood Section, National Institute of Neurological Disorders and Stroke, National Institutes of Health, 35 Convent Drive, BLDG 35 RM 2A116, Bethesda, Maryland, 20892, USA.,Atlantic Health System, Goryeb Children's Hospital, Morristown, New Jersey, USA
| | - Ying Hu
- Neuromuscular and Neurogenetic Disorders of Childhood Section, National Institute of Neurological Disorders and Stroke, National Institutes of Health, 35 Convent Drive, BLDG 35 RM 2A116, Bethesda, Maryland, 20892, USA
| | - Allissa Dillmann
- Cell Biology and Gene Expression Section, Laboratory of Neurogenetics, National Institute of Aging, National Institutes of Health, 35 Convent Drive, BG 35 RM 1A116, Bethesda, Maryland, 20892, USA
| | - Mark R Cookson
- Cell Biology and Gene Expression Section, Laboratory of Neurogenetics, National Institute of Aging, National Institutes of Health, 35 Convent Drive, BG 35 RM 1A116, Bethesda, Maryland, 20892, USA
| | - A Reghan Foley
- Neuromuscular and Neurogenetic Disorders of Childhood Section, National Institute of Neurological Disorders and Stroke, National Institutes of Health, 35 Convent Drive, BLDG 35 RM 2A116, Bethesda, Maryland, 20892, USA
| | - Carsten G Bönnemann
- Neuromuscular and Neurogenetic Disorders of Childhood Section, National Institute of Neurological Disorders and Stroke, National Institutes of Health, 35 Convent Drive, BLDG 35 RM 2A116, Bethesda, Maryland, 20892, USA
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17
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Magee L, Bram JT, Anari JB, Ramo B, Mayer OH, Matsumoto H, Brooks JT, Andras L, Lark R, Fitzgerald R, Truong W, Li Y, Karlin L, Schwend R, Weinstein S, Roye D, Snyder B, Flynn JM, Oetgen M, Smith J, Cahill PJ. Outcomes and Complications in Management of Congenital Myopathy Early-Onset Scoliosis. J Pediatr Orthop 2021; 41:531-536. [PMID: 34325442 DOI: 10.1097/bpo.0000000000001922] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
BACKGROUND Congenital myopathies (CMs) are complex conditions often associated with early-onset scoliosis (EOS). The purpose of this study was to investigate radiographic outcomes in CM patients undergoing EOS instrumentation as well as complications. Secondarily, we sought to compare these patients to a population with higher prevalence, cerebral palsy (CP) EOS patients. METHODS This is a retrospective study of a prospectively collected multicenter registry. The registry was queried for EOS patients with growth-sparing instrumentation (vertical expandable prosthetic titanium ribs, magnetically controlled growing rods, traditional growing rod, or Shilla) and a CM or CP diagnosis with minimum 2 years follow-up. Outcomes included major curve magnitude, T1-S1 height, kyphosis, and complications. RESULTS Sixteen patients with CM were included. Six (37.5%) children with CM experienced 11 complications by 2 years. Mean major curve magnitude for CM patients was improved postoperatively and maintained at 2 years (P<0.01), with no significant increase in T1-S1 height or maximum kyphosis(P>0.05). Ninety-seven patients with CP EOS were included as a comparative cohort. Fewer CP patients required baseline respiratory support compared with CM patients (20.0% vs. 92.9%, P<0.01). Fifty-four (55.7%) CP patients experienced a total of 105 complications at 2 years. There was no evidence that the risk of complication or radiographic outcomes differs between cohorts at 2 years, though CP EOS patients experienced significant improvement in all measurements at 2 years. CONCLUSIONS EOS CM children face a high risk of complication after growing instrumentation, with similar curve correction and risk of complication to CP patients. LEVEL OF EVIDENCE Level III.
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Affiliation(s)
- Lacey Magee
- Children's Hospital of Philadelphia, Division of Orthopaedics
| | - Joshua T Bram
- Children's Hospital of Philadelphia, Division of Orthopaedics
| | - Jason B Anari
- Children's Hospital of Philadelphia, Division of Orthopaedics
| | - Brandon Ramo
- Texas Scottish Rite Hospital for Children, Dallas, TX
| | - Oscar H Mayer
- Children's Hospital of Philadelphia, Division of Pulmonary Medicine, Philadelphia, PA
| | - Hiroko Matsumoto
- Columbia University Medical Center, Division of Pediatric Orthopedics, New York, NY
| | | | | | - Robert Lark
- Department of Orthopaedics, Duke University, Durham, NC
| | | | - Walter Truong
- Gillette Children's Specialty Healthcare, St. Paul, MN
| | - Ying Li
- C.S. Mott Children's Hospital, Ann Arbor, MI
| | | | | | | | - David Roye
- Columbia University Medical Center, Division of Pediatric Orthopedics, New York, NY
| | | | - John M Flynn
- Children's Hospital of Philadelphia, Division of Orthopaedics
| | | | - John Smith
- Primary Children's Medical Center, University of Utah, Salt Lake City, UT
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18
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Takenaka-Ninagawa N, Kim J, Zhao M, Sato M, Jonouchi T, Goto M, Yoshioka CKB, Ikeda R, Harada A, Sato T, Ikeya M, Uezumi A, Nakatani M, Noguchi S, Sakurai H. Collagen-VI supplementation by cell transplantation improves muscle regeneration in Ullrich congenital muscular dystrophy model mice. Stem Cell Res Ther 2021; 12:446. [PMID: 34372931 PMCID: PMC8351132 DOI: 10.1186/s13287-021-02514-3] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2021] [Accepted: 07/13/2021] [Indexed: 11/10/2022] Open
Abstract
Background Mesenchymal stromal cells (MSCs) function as supportive cells on skeletal muscle homeostasis through several secretory factors including type 6 collagen (COL6). Several mutations of COL6A1, 2, and 3 genes cause Ullrich congenital muscular dystrophy (UCMD). Skeletal muscle regeneration deficiency has been reported as a characteristic phenotype in muscle biopsy samples of human UCMD patients and UCMD model mice. However, little is known about the COL6-dependent mechanism for the occurrence and progression of the deficiency. The purpose of this study was to clarify the pathological mechanism of UCMD by supplementing COL6 through cell transplantation. Methods To test whether COL6 supplementation has a therapeutic effect for UCMD, in vivo and in vitro experiments were conducted using four types of MSCs: (1) healthy donors derived-primary MSCs (pMSCs), (2) MSCs derived from healthy donor induced pluripotent stem cell (iMSCs), (3) COL6-knockout iMSCs (COL6KO-iMSCs), and (4) UCMD patient-derived iMSCs (UCMD-iMSCs). Results All four MSC types could engraft for at least 12 weeks when transplanted into the tibialis anterior muscles of immunodeficient UCMD model (Col6a1KO) mice. COL6 protein was restored by the MSC transplantation if the MSCs were not COL6-deficient (types 1 and 2). Moreover, muscle regeneration and maturation in Col6a1KO mice were promoted with the transplantation of the COL6-producing MSCs only in the region supplemented with COL6. Skeletal muscle satellite cells derived from UCMD model mice (Col6a1KO-MuSCs) co-cultured with type 1 or 2 MSCs showed improved proliferation, differentiation, and maturation, whereas those co-cultured with type 3 or 4 MSCs did not. Conclusions These findings indicate that COL6 supplementation improves muscle regeneration and maturation in UCMD model mice. Supplementary Information The online version contains supplementary material available at 10.1186/s13287-021-02514-3.
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Affiliation(s)
- Nana Takenaka-Ninagawa
- Department of Clinical Application, Center for iPS Cell Research and Application (CiRA), Kyoto University, 53 Kawahara-cho, Shogoin, Sakyo-ku, Kyoto, 606-8507, Japan.
| | - Jinsol Kim
- Department of Clinical Application, Center for iPS Cell Research and Application (CiRA), Kyoto University, 53 Kawahara-cho, Shogoin, Sakyo-ku, Kyoto, 606-8507, Japan
| | - Mingming Zhao
- Department of Clinical Application, Center for iPS Cell Research and Application (CiRA), Kyoto University, 53 Kawahara-cho, Shogoin, Sakyo-ku, Kyoto, 606-8507, Japan
| | - Masae Sato
- Department of Clinical Application, Center for iPS Cell Research and Application (CiRA), Kyoto University, 53 Kawahara-cho, Shogoin, Sakyo-ku, Kyoto, 606-8507, Japan
| | - Tatsuya Jonouchi
- Department of Clinical Application, Center for iPS Cell Research and Application (CiRA), Kyoto University, 53 Kawahara-cho, Shogoin, Sakyo-ku, Kyoto, 606-8507, Japan
| | - Megumi Goto
- Department of Clinical Application, Center for iPS Cell Research and Application (CiRA), Kyoto University, 53 Kawahara-cho, Shogoin, Sakyo-ku, Kyoto, 606-8507, Japan
| | - Clémence Kiho Bourgeois Yoshioka
- Department of Clinical Application, Center for iPS Cell Research and Application (CiRA), Kyoto University, 53 Kawahara-cho, Shogoin, Sakyo-ku, Kyoto, 606-8507, Japan
| | - Rukia Ikeda
- Department of Clinical Application, Center for iPS Cell Research and Application (CiRA), Kyoto University, 53 Kawahara-cho, Shogoin, Sakyo-ku, Kyoto, 606-8507, Japan
| | - Aya Harada
- Department of Clinical Application, Center for iPS Cell Research and Application (CiRA), Kyoto University, 53 Kawahara-cho, Shogoin, Sakyo-ku, Kyoto, 606-8507, Japan
| | - Takahiko Sato
- Department of Anatomy, Fujita Health University, Toyoake, Aichi, 470-1192, Japan
| | - Makoto Ikeya
- Department of Clinical Application, Center for iPS Cell Research and Application (CiRA), Kyoto University, 53 Kawahara-cho, Shogoin, Sakyo-ku, Kyoto, 606-8507, Japan
| | - Akiyoshi Uezumi
- Muscle Aging and Regenerative Medicine, Research Team for Geriatric Medicine, Tokyo Metropolitan Institute of Gerontology, Tokyo, 173-0015, Japan
| | - Masashi Nakatani
- Division for Therapies against Intractable Diseases, Institute for Comprehensive Medical Science (ICMS), Fujita Health University, Toyoake, Aichi, 470-1192, Japan
| | - Satoru Noguchi
- Department of Neuromuscular Research, National Institute of Neuroscience, Department of Clinical Development, Translational Medical Center, National Center of Neurology and Psychiatry, Kodaira, Tokyo, 187-8551, Japan
| | - Hidetoshi Sakurai
- Department of Clinical Application, Center for iPS Cell Research and Application (CiRA), Kyoto University, 53 Kawahara-cho, Shogoin, Sakyo-ku, Kyoto, 606-8507, Japan.
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19
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Martins SG, Zilhão R, Thorsteinsdóttir S, Carlos AR. Linking Oxidative Stress and DNA Damage to Changes in the Expression of Extracellular Matrix Components. Front Genet 2021; 12:673002. [PMID: 34394183 PMCID: PMC8358603 DOI: 10.3389/fgene.2021.673002] [Citation(s) in RCA: 36] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2021] [Accepted: 06/23/2021] [Indexed: 12/12/2022] Open
Abstract
Cells are subjected to endogenous [e.g., reactive oxygen species (ROS), replication stress] and exogenous insults (e.g., UV light, ionizing radiation, and certain chemicals), which can affect the synthesis and/or stability of different macromolecules required for cell and tissue function. Oxidative stress, caused by excess ROS, and DNA damage, triggered in response to different sources, are countered and resolved by specific mechanisms, allowing the normal physiological equilibrium of cells and tissues to be restored. One process that is affected by oxidative stress and DNA damage is extracellular matrix (ECM) remodeling, which is a continuous and highly controlled mechanism that allows tissues to readjust in reaction to different challenges. The crosstalk between oxidative stress/DNA damage and ECM remodeling is not unidirectional. Quite on the contrary, mutations in ECM genes have a strong impact on tissue homeostasis and are characterized by increased oxidative stress and potentially also accumulation of DNA damage. In this review, we will discuss how oxidative stress and DNA damage affect the expression and deposition of ECM molecules and conversely how mutations in genes encoding ECM components trigger accumulation of oxidative stress and DNA damage. Both situations hamper the reestablishment of cell and tissue homeostasis, with negative impacts on tissue and organ function, which can be a driver for severe pathological conditions.
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Affiliation(s)
- Susana G Martins
- Centro de Ecologia, Evolução e Alterações Ambientais, Faculdade de Ciências, Universidade de Lisboa, Lisboa, Portugal.,Departamento de Biologia Animal, Faculdade de Ciências, Universidade de Lisboa, Lisboa, Portugal
| | - Rita Zilhão
- Centro de Ecologia, Evolução e Alterações Ambientais, Faculdade de Ciências, Universidade de Lisboa, Lisboa, Portugal.,Departamento de Biologia Vegetal, Faculdade de Ciências, Universidade de Lisboa, Lisboa, Portugal
| | - Sólveig Thorsteinsdóttir
- Centro de Ecologia, Evolução e Alterações Ambientais, Faculdade de Ciências, Universidade de Lisboa, Lisboa, Portugal.,Departamento de Biologia Animal, Faculdade de Ciências, Universidade de Lisboa, Lisboa, Portugal
| | - Ana Rita Carlos
- Centro de Ecologia, Evolução e Alterações Ambientais, Faculdade de Ciências, Universidade de Lisboa, Lisboa, Portugal.,Departamento de Biologia Animal, Faculdade de Ciências, Universidade de Lisboa, Lisboa, Portugal
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20
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Basse AL, Agerholm M, Farup J, Dalbram E, Nielsen J, Ørtenblad N, Altıntaş A, Ehrlich AM, Krag T, Bruzzone S, Dall M, de Guia RM, Jensen JB, Møller AB, Karlsen A, Kjær M, Barrès R, Vissing J, Larsen S, Jessen N, Treebak JT. Nampt controls skeletal muscle development by maintaining Ca 2+ homeostasis and mitochondrial integrity. Mol Metab 2021; 53:101271. [PMID: 34119711 PMCID: PMC8259345 DOI: 10.1016/j.molmet.2021.101271] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/03/2021] [Revised: 05/31/2021] [Accepted: 06/09/2021] [Indexed: 12/12/2022] Open
Abstract
Objective NAD+ is a co-factor and substrate for enzymes maintaining energy homeostasis. Nicotinamide phosphoribosyltransferase (NAMPT) controls NAD+ synthesis, and in skeletal muscle, NAD+ is essential for muscle integrity. However, the underlying molecular mechanisms by which NAD+ synthesis affects muscle health remain poorly understood. Thus, the objective of the current study was to delineate the role of NAMPT-mediated NAD+ biosynthesis in skeletal muscle development and function. Methods To determine the role of Nampt in muscle development and function, we generated skeletal muscle-specific Nampt KO (SMNKO) mice. We performed a comprehensive phenotypic characterization of the SMNKO mice, including metabolic measurements, histological examinations, and RNA sequencing analyses of skeletal muscle from SMNKO mice and WT littermates. Results SMNKO mice were smaller, with phenotypic changes in skeletal muscle, including reduced fiber area and increased number of centralized nuclei. The majority of SMNKO mice died prematurely. Transcriptomic analysis identified that the gene encoding the mitochondrial permeability transition pore (mPTP) regulator Cyclophilin D (Ppif) was upregulated in skeletal muscle of SMNKO mice from 2 weeks of age, with associated increased sensitivity of mitochondria to the Ca2+-stimulated mPTP opening. Treatment of SMNKO mice with the Cyclophilin D inhibitor, Cyclosporine A, increased membrane integrity, decreased the number of centralized nuclei, and increased survival. Conclusions Our study demonstrates that NAMPT is crucial for maintaining cellular Ca2+ homeostasis and skeletal muscle development, which is vital for juvenile survival. NAD+ salvage capacity is important for skeletal muscle development and survival. Skeletal muscle-specific Nampt knockout mice exhibit a dystrophy-like phenotype. Nampt deletion alters Ca2+ homeostasis and impairs mitochondrial function. Low NAD+ levels signals mitochondrial permeability transition pore opening. Cyclosporin A treatment improves sarcolemma integrity and increases survival rate.
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Affiliation(s)
- Astrid L Basse
- Novo Nordisk Foundation Center for Basic Metabolic Research, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Marianne Agerholm
- Novo Nordisk Foundation Center for Basic Metabolic Research, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Jean Farup
- Steno Diabetes Center Aarhus, Aarhus University Hospital, Aarhus, Denmark; Department of Biomedicine, Aarhus University, Aarhus, Denmark
| | - Emilie Dalbram
- Novo Nordisk Foundation Center for Basic Metabolic Research, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Joachim Nielsen
- Department of Sports Science and Clinical Biomechanics, University of Southern Denmark, Odense, Denmark
| | - Niels Ørtenblad
- Department of Sports Science and Clinical Biomechanics, University of Southern Denmark, Odense, Denmark
| | - Ali Altıntaş
- Novo Nordisk Foundation Center for Basic Metabolic Research, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Amy M Ehrlich
- Novo Nordisk Foundation Center for Basic Metabolic Research, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Thomas Krag
- Copenhagen Neuromuscular Center, Rigshospitalet, Copenhagen, Denmark
| | - Santina Bruzzone
- Department of Experimental Medicine, University of Genova, Genova, Italy
| | - Morten Dall
- Novo Nordisk Foundation Center for Basic Metabolic Research, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Roldan M de Guia
- Novo Nordisk Foundation Center for Basic Metabolic Research, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Jonas B Jensen
- Steno Diabetes Center Aarhus, Aarhus University Hospital, Aarhus, Denmark
| | - Andreas B Møller
- Steno Diabetes Center Aarhus, Aarhus University Hospital, Aarhus, Denmark
| | - Anders Karlsen
- Institute of Sports Medicine, Bispebjerg Hospital, University of Copenhagen, Copenhagen, Denmark
| | - Michael Kjær
- Institute of Sports Medicine, Bispebjerg Hospital, University of Copenhagen, Copenhagen, Denmark
| | - Romain Barrès
- Novo Nordisk Foundation Center for Basic Metabolic Research, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - John Vissing
- Copenhagen Neuromuscular Center, Rigshospitalet, Copenhagen, Denmark
| | - Steen Larsen
- Center for Healthy Aging, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark; Clinical Research Centre, Medical University of Bialystok, Bialystok, Poland
| | - Niels Jessen
- Steno Diabetes Center Aarhus, Aarhus University Hospital, Aarhus, Denmark; Department of Biomedicine, Aarhus University, Aarhus, Denmark
| | - Jonas T Treebak
- Novo Nordisk Foundation Center for Basic Metabolic Research, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark.
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21
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Gherardi G, De Mario A, Mammucari C. The mitochondrial calcium homeostasis orchestra plays its symphony: Skeletal muscle is the guest of honor. INTERNATIONAL REVIEW OF CELL AND MOLECULAR BIOLOGY 2021; 362:209-259. [PMID: 34253296 DOI: 10.1016/bs.ircmb.2021.03.005] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/03/2023]
Abstract
Skeletal muscle mitochondria are placed in close proximity of the sarcoplasmic reticulum (SR), the main intracellular Ca2+ store. During muscle activity, excitation of sarcolemma and of T-tubule triggers the release of Ca2+ from the SR initiating myofiber contraction. The rise in cytosolic Ca2+ determines the opening of the mitochondrial calcium uniporter (MCU), the highly selective channel of the inner mitochondrial membrane (IMM), causing a robust increase in mitochondrial Ca2+ uptake. The Ca2+-dependent activation of TCA cycle enzymes increases the synthesis of ATP required for SERCA activity. Thus, Ca2+ is transported back into the SR and cytosolic [Ca2+] returns to resting levels eventually leading to muscle relaxation. In recent years, thanks to the molecular identification of MCU complex components, the role of mitochondrial Ca2+ uptake in the pathophysiology of skeletal muscle has been uncovered. In this chapter, we will introduce the reader to a general overview of mitochondrial Ca2+ accumulation. We will tackle the key molecular players and the cellular and pathophysiological consequences of mitochondrial Ca2+ dyshomeostasis. In the second part of the chapter, we will discuss novel findings on the physiological role of mitochondrial Ca2+ uptake in skeletal muscle. Finally, we will examine the involvement of mitochondrial Ca2+ signaling in muscle diseases.
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Affiliation(s)
- Gaia Gherardi
- Department of Biomedical Sciences, University of Padua, Padua, Italy
| | - Agnese De Mario
- Department of Biomedical Sciences, University of Padua, Padua, Italy
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22
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Abdelzaher WY, Ahmed SM, Welson NN, Alsharif KF, Batiha GES, Labib DAA. Dapsone Ameliorates Isoproterenol-Induced Myocardial Infarction via Nrf2/ HO-1; TLR4/ TNF-α Signaling Pathways and the Suppression of Oxidative Stress, Inflammation, and Apoptosis in Rats. Front Pharmacol 2021; 12:669679. [PMID: 34093197 PMCID: PMC8170324 DOI: 10.3389/fphar.2021.669679] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2021] [Accepted: 05/04/2021] [Indexed: 01/08/2023] Open
Abstract
Myocardial infarction (MI) is a critical condition that can happen with high doses or rapid termination of beta blockers therapy. The study aimed to evaluate the potential anti-toxic value of DAP against isoproterenol (ISO) - induced MI. Twenty-eight male Wistar rats were used for the study. The rodents were assigned to four groups (n = 7) and the treatments were given for 12 days as follows; Group 1 (control): were administrated normal saline, Group 2 (DAP control): were administrated DAP (10 mg/kg/day IP), Group 3 (ISO group): were administrated ISO (100 mg/kg, IP on the 11th and 12th days of the experiment), and Group 4 (DAP + ISO): co-treated with DAP plus ISO. The measured parameters were cardiac malondialdehyde (MDA), reduced glutathione (GSH), total nitrite/nitrate (NOx), catalase (CAT), serum cardiac biomarkers; CK-MB, ALT, LDH, and ALK-PH. Also, interleukin-1β (IL-1β), tumor necrosis factor-alpha (TNF-α), Nuclear factor (erythroid-derived 2)-like 2 (Nrf2), heme oxygenase-1 (HO-1), toll-like receptor 4 (TLR4), caspase-3 activity, and hepatic BAX and Bcl-2 were also assessed. Also, histological examination and vimentin immuno-expressions were studied. ISO group exhibited MI as evidenced by the elevation in serum cardiac biomarkers, MDA, NOx, IL-1β, TNF-α, and caspase-3 together with the reduction in GSH, Nrf2, HO-1 levels, and a faint vimentin immuno-reaction. Histological alterations revealing distorted cardiomyocytes; vacuolation, edema, pyknosis, and fragmentation were also noticed. DAP significantly ameliorated all the examined toxicity indicators. DAP revealed efficient ameliorative actions against ISO-caused MI by marked reduction in myocardial infarct size and suppressed oxidative stress, inflammation, and apoptosis via the up-regulation of the Nrf2/HO-1; TLR4/TNF-α signaling pathways.
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Affiliation(s)
| | - Sabreen Mahmoud Ahmed
- Depatment of Human Anatomy and Embryology, Faculty of Medicine, Minia University, Delegated to Deraya University, Minia, Egypt
| | - Nermeen N Welson
- Department of Forensic Medicine and Clinical Toxicology, Faculty of Medicine, Beni-Suef University, Beni-Suef, Egypt
| | - Khalaf F Alsharif
- Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, Taif University, Taif, Saudi Arabia
| | - Gaber El-Saber Batiha
- Department of Pharmacology and Therapeutics, Faculty of Veterinary Medicine, Damanhour University, Damanhour, Egypt
| | - Dina A Aly Labib
- Department of Pharmacology, Faculty of Medicine, Cairo University, Giza, Egypt
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23
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Zhang X, Eliasberg CD, Rodeo SA. Mitochondrial dysfunction and potential mitochondrial protectant treatments in tendinopathy. Ann N Y Acad Sci 2021; 1490:29-41. [PMID: 33843069 DOI: 10.1111/nyas.14599] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2020] [Revised: 03/08/2021] [Accepted: 03/15/2021] [Indexed: 01/17/2023]
Abstract
Tendinopathy is a common musculoskeletal condition that affects a wide range of patients, including athletes, laborers, and older patients. Tendinopathy is often characterized by pain, swelling, and impaired performance and function. The etiology of tendinopathy is multifactorial, including both intrinsic and extrinsic mechanisms. Various treatment strategies have been described, but outcomes are often variable, as tendons have poor intrinsic healing potential compared with other tissues. Therefore, several novel targets for tendon regeneration have been identified and are being explored. Mitochondria are organelles that generate adenosine triphosphate, and they are considered to be the power generators of the cell. Recently, mitochondrial dysfunction verified by increased reactive oxygen species (ROS), decreased superoxide dismutase activity, cristae disorganization, and decreased number of mitochondria has been identified as a mechanism that may contribute to tendinopathy. This has provided new insights for studying tendinopathy pathogenesis and potential treatments via antioxidant, metabolic modulation, or ROS inhibition. In this review, we present the current understanding of mitochondrial dysfunction in tendinopathy. The review summarizes the potential mechanism by which mitochondrial dysfunction contributes to the development of tendinopathy, as well as the potential therapeutic benefits of mitochondrial protectants in the treatment of tendinopathy.
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Affiliation(s)
- Xueying Zhang
- Orthopedic Soft Tissue Research Program, Hospital for Special Surgery, New York, New York.,Department of Sports Medicine & Research Center of Sports Medicine, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Claire D Eliasberg
- Orthopedic Soft Tissue Research Program, Hospital for Special Surgery, New York, New York
| | - Scott A Rodeo
- Orthopedic Soft Tissue Research Program, Hospital for Special Surgery, New York, New York
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24
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Hwang JS, Ma DJ, Choi J, Shin YJ. COL8A2 Regulates the Fate of Corneal Endothelial Cells. Invest Ophthalmol Vis Sci 2021; 61:26. [PMID: 32931574 PMCID: PMC7500139 DOI: 10.1167/iovs.61.11.26] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Purpose To investigate the effect of COL8A2 repression on corneal endothelial cells (CECs) in vitro and in vivo. Methods Cultured human CECs (hCECs) were transfected with COL8A2 siRNA (siCOL8A2), and the cell viability and proliferation rate were measured. The expression of cell proliferation–associated molecules was evaluated by Western blotting and real-time reverse transcription PCR. Cell shape, Wingless-INT (WNT) signaling, and mitochondrial oxidative stress were also measured. For in vivo experiments, siCOL8A2 was transfected into rat CECs (rCECs), and corneal opacity and corneal endothelium were evaluated. Results After transfection with siCOL8A2, COL8A2 expression was reduced (80%). Cell viability, cell proliferation rate, cyclin D1 expression, and the number of cells in the S-phase were reduced in siCOL8A2-treated cells. The cell attained a fibroblast-like shape, and SNAI1, pSMAD2, and β-catenin expression, along with mitochondrial mass and oxidative stress levels, were altered. Corneal opacity increased, and the CECs were changed in rats in the siCOL8A2 group. Conclusions COL8A2 is required to maintain normal wound healing and CEC function.
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Affiliation(s)
- Jin Sun Hwang
- Department of Ophthalmology, Hallym University Medical Center, Hallym University College of Medicine, Seoul, Republic of Korea
| | - Dae Joong Ma
- Department of Ophthalmology, Hallym University Medical Center, Hallym University College of Medicine, Seoul, Republic of Korea
| | - Jinju Choi
- Department of Ophthalmology, Hallym University Medical Center, Hallym University College of Medicine, Seoul, Republic of Korea
| | - Young Joo Shin
- Department of Ophthalmology, Hallym University Medical Center, Hallym University College of Medicine, Seoul, Republic of Korea
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25
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Warnsmann V, Marschall LM, Osiewacz HD. Impaired F 1F o-ATP-Synthase Dimerization Leads to the Induction of Cyclophilin D-Mediated Autophagy-Dependent Cell Death and Accelerated Aging. Cells 2021; 10:757. [PMID: 33808173 PMCID: PMC8066942 DOI: 10.3390/cells10040757] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2021] [Revised: 03/22/2021] [Accepted: 03/27/2021] [Indexed: 01/11/2023] Open
Abstract
Mitochondrial F1Fo-ATP-synthase dimers play a critical role in shaping and maintenance of mitochondrial ultrastructure. Previous studies have revealed that ablation of the F1Fo-ATP-synthase assembly factor PaATPE of the ascomycete Podospora anserina strongly affects cristae formation, increases hydrogen peroxide levels, impairs mitochondrial function and leads to premature cell death. In the present study, we investigated the underlying mechanistic basis. Compared to the wild type, we observed a slight increase in non-selective and a pronounced increase in mitophagy, the selective vacuolar degradation of mitochondria. This effect depends on the availability of functional cyclophilin D (PaCYPD), the regulator of the mitochondrial permeability transition pore (mPTP). Simultaneous deletion of PaAtpe and PaAtg1, encoding a key component of the autophagy machinery or of PaCypD, led to a reduction of mitophagy and a partial restoration of the wild-type specific lifespan. The same effect was observed in the PaAtpe deletion strain after inhibition of PaCYPD by its specific inhibitor, cyclosporin A. Overall, our data identify autophagy-dependent cell death (ADCD) as part of the cellular response to impaired F1Fo-ATP-synthase dimerization, and emphasize the crucial role of functional mitochondria in aging.
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Affiliation(s)
| | | | - Heinz D. Osiewacz
- Faculty of Biosciences, Institute of Molecular Biosciences, Goethe University, 60438 Frankfurt, Germany; (V.W.); (L.-M.M.)
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26
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Stocco A, Smolina N, Sabatelli P, Šileikytė J, Artusi E, Mouly V, Cohen M, Forte M, Schiavone M, Bernardi P. Treatment with a triazole inhibitor of the mitochondrial permeability transition pore fully corrects the pathology of sapje zebrafish lacking dystrophin. Pharmacol Res 2021; 165:105421. [PMID: 33429034 DOI: 10.1016/j.phrs.2021.105421] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/08/2020] [Revised: 12/29/2020] [Accepted: 12/31/2020] [Indexed: 12/28/2022]
Abstract
High-throughput screening identified isoxazoles as potent but metabolically unstable inhibitors of the mitochondrial permeability transition pore (PTP). Here we have studied the effects of a metabolically stable triazole analog, TR001, which maintains the PTP inhibitory properties with an in vitro potency in the nanomolar range. We show that TR001 leads to recovery of muscle structure and function of sapje zebrafish, a severe model of Duchenne muscular dystrophy (DMD). PTP inhibition fully restores the otherwise defective respiration in vivo, allowing normal development of sapje individuals in spite of lack of dystrophin. About 80 % sapje zebrafish treated with TR001 are alive and normal at 18 days post fertilization (dpf), a point in time when not a single untreated sapje individual survives. Time to 50 % death of treated zebrafish increases from 5 to 28 dpf, a sizeable number of individuals becoming young adults in spite of the persistent lack of dystrophin expression. TR001 improves respiration of myoblasts and myotubes from DMD patients, suggesting that PTP-dependent dysfunction also occurs in the human disease and that mitochondrial therapy of DMD with PTP-inhibiting triazoles is a viable treatment option.
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Affiliation(s)
- Anna Stocco
- Department of Biomedical Sciences and CNR Neuroscience Institute, University of Padova, Padova, Italy
| | - Natalia Smolina
- Department of Biomedical Sciences and CNR Neuroscience Institute, University of Padova, Padova, Italy
| | - Patrizia Sabatelli
- CNR-Institute of Molecular Genetics "Luigi Luca Cavalli-Sforza"-Unit of Bologna, Bologna, Italy; IRCCS Istituto Ortopedico Rizzoli, Bologna, Italy
| | - Justina Šileikytė
- Vollum Institute and Department of Chemical Physiology and Biochemistry, Oregon Health and Science University, Portland, OR, USA
| | - Edoardo Artusi
- Department of Biomedical Sciences and CNR Neuroscience Institute, University of Padova, Padova, Italy
| | - Vincent Mouly
- Center for Research in Myology UMRS 974, Sorbonne Université, INSERM, Myology Institute, Paris, France
| | - Michael Cohen
- Vollum Institute and Department of Chemical Physiology and Biochemistry, Oregon Health and Science University, Portland, OR, USA
| | - Michael Forte
- Vollum Institute and Department of Chemical Physiology and Biochemistry, Oregon Health and Science University, Portland, OR, USA
| | - Marco Schiavone
- Department of Biomedical Sciences and CNR Neuroscience Institute, University of Padova, Padova, Italy.
| | - Paolo Bernardi
- Department of Biomedical Sciences and CNR Neuroscience Institute, University of Padova, Padova, Italy.
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27
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Joo HJ, Ma DJ, Hwang JS, Shin YJ. SIRT1 Activation Using CRISPR/dCas9 Promotes Regeneration of Human Corneal Endothelial Cells through Inhibiting Senescence. Antioxidants (Basel) 2020; 9:antiox9111085. [PMID: 33158256 PMCID: PMC7694272 DOI: 10.3390/antiox9111085] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Revised: 10/29/2020] [Accepted: 11/03/2020] [Indexed: 02/07/2023] Open
Abstract
Human corneal endothelial cells (hCECs) are restricted in proliferative capacity in vivo. Reduction in the number of hCEC leads to persistent corneal edema requiring corneal transplantation. This study demonstrates the functions of SIRT1 in hCECs and its potential for corneal endothelial regeneration. Cell morphology, cell growth rates and proliferation-associated proteins were compared in normal and senescent hCECs. SIRT1 was activated using the CRISPR/dCas9 activation system (SIRT1a). The plasmids were transfected into CECs of six-week-old Sprague–Dawley rats using electroporation and cryoinjury was performed. Senescent cells were larger, elongated and showed lower proliferation rates and lower SIRT1 levels. SIRT1 activation promoted the wound healing of CECs. In vivo transfection of SIRT1a promoted the regeneration of CECs. The proportion of the S-phase cells was lower in senescent cells and elevated upon SIRT1a activation. SIRT1 regulated cell proliferation, proliferation-associated proteins, mitochondrial membrane potential, and oxidative stress levels. In conclusion, corneal endothelial senescence is related with a decreased SIRT1 level. SIRT1a promotes the regeneration of CECs by inhibiting cytokine-induced cell death and senescence. Gene function activation therapy using SIRT1a may serve as a novel treatment strategy for hCEC diseases.
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28
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Egea G, Jiménez-Altayó F, Campuzano V. Reactive Oxygen Species and Oxidative Stress in the Pathogenesis and Progression of Genetic Diseases of the Connective Tissue. Antioxidants (Basel) 2020; 9:antiox9101013. [PMID: 33086603 PMCID: PMC7603119 DOI: 10.3390/antiox9101013] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2020] [Revised: 10/14/2020] [Accepted: 10/14/2020] [Indexed: 12/18/2022] Open
Abstract
Connective tissue is known to provide structural and functional “glue” properties to other tissues. It contains cellular and molecular components that are arranged in several dynamic organizations. Connective tissue is the focus of numerous genetic and nongenetic diseases. Genetic diseases of the connective tissue are minority or rare, but no less important than the nongenetic diseases. Here we review the impact of reactive oxygen species (ROS) and oxidative stress on the onset and/or progression of diseases that directly affect connective tissue and have a genetic origin. It is important to consider that ROS and oxidative stress are not synonymous, although they are often closely linked. In a normal range, ROS have a relevant physiological role, whose levels result from a fine balance between ROS producers and ROS scavenge enzymatic systems. However, pathology arises or worsens when such balance is lost, like when ROS production is abnormally and constantly high and/or when ROS scavenge (enzymatic) systems are impaired. These concepts apply to numerous diseases, and connective tissue is no exception. We have organized this review around the two basic structural molecular components of connective tissue: The ground substance and fibers (collagen and elastic fibers).
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Affiliation(s)
- Gustavo Egea
- Department of Biomedical Science, University of Barcelona School of Medicine and Health Sciences, 08036 Barcelona, Spain;
- Institut d’Investigacions Biomédiques August Pi i Sunyer (IDIBAPS), University of Barcelona, 08036 Barcelona, Spain
- Institut de Nanociencies I Nanotecnologia (IN2UB), University of Barcelona, 08028 Barcelona, Spain
- Correspondence: ; Tel.: +34-934-021-909
| | - Francesc Jiménez-Altayó
- Departament of Pharmacology, Therapeutics, and Toxicology, Neuroscience Institute, Autonomous University of Barcelona, 08193 Barcelona, Spain;
| | - Victoria Campuzano
- Department of Biomedical Science, University of Barcelona School of Medicine and Health Sciences, 08036 Barcelona, Spain;
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29
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Hwang JS, Yi HC, Shin YJ. Effect of SOX2 Repression on Corneal Endothelial Cells. Int J Mol Sci 2020; 21:ijms21124397. [PMID: 32575737 PMCID: PMC7352647 DOI: 10.3390/ijms21124397] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2020] [Revised: 06/14/2020] [Accepted: 06/18/2020] [Indexed: 12/13/2022] Open
Abstract
Purpose: Human corneal endothelial cells (hCECs) pump out water from the stroma and maintain the clarity of the cornea. The sex-determining region Y-box 2 (SOX2) participates in differentiation during the development of the anterior segment of the eye and is found in the periphery of wounded corneas. This study was performed to investigate the effect of SOX2 repression on hCECs. Methods: Cultured hCECs were transfected by siRNA for SOX2. The wound healing rate and cell viability were measured. The cell proliferation-associated protein level was evaluated by Western blotting and RT-PCR. The energy production and mitochondrial function were measured, and cell shape and WNT signaling were assessed. Results: Upon transfecting the cultured cells with siRNA for SOX2, the SOX2 level was reduced by 80%. The wound healing rate and viability were also reduced. Additionally, CDK1, cyclin D1, SIRT1, and ATP5B levels were reduced, and CDKN2A and pAMPK levels were increased. Mitochondrial oxidative stress and mitochondrial viability decreased, and the cell shape became elongated. Furthermore, SMAD1, SNAI1, WNT3A, and β-catenin levels were increased. Conclusion: SOX2 repression disrupts the normal metabolism of hCECs through modulating WNT signaling and mitochondrial functions.
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Affiliation(s)
- Jin Sun Hwang
- Department of Ophthalmology, Hallym University College of Medicine, 1, Hallymdaehak-gil, Chuncheon-si, Gangwon-do 24252, Korea; (J.S.H.); (H.C.Y.)
- Department of Ophthalmology, Hallym University Medical Center, 1 Shingil-ro, Youngdeungpo-gu, Seoul 07441, Korea
| | - Ho Chul Yi
- Department of Ophthalmology, Hallym University College of Medicine, 1, Hallymdaehak-gil, Chuncheon-si, Gangwon-do 24252, Korea; (J.S.H.); (H.C.Y.)
- Department of Ophthalmology, Hallym University Medical Center, 1 Shingil-ro, Youngdeungpo-gu, Seoul 07441, Korea
| | - Young Joo Shin
- Department of Ophthalmology, Hallym University College of Medicine, 1, Hallymdaehak-gil, Chuncheon-si, Gangwon-do 24252, Korea; (J.S.H.); (H.C.Y.)
- Department of Ophthalmology, Hallym University Medical Center, 1 Shingil-ro, Youngdeungpo-gu, Seoul 07441, Korea
- Correspondence: ; Tel.: +82-2-6960-1240
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30
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Datta N, Ghosh PS. Update on Muscular Dystrophies with Focus on Novel Treatments and Biomarkers. Curr Neurol Neurosci Rep 2020; 20:14. [DOI: 10.1007/s11910-020-01034-6] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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31
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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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Hwang JS, Yoon CK, Hyon JY, Chung TY, Shin YJ. Transcription Factor 4 Regulates the Regeneration of Corneal Endothelial Cells. Invest Ophthalmol Vis Sci 2020; 61:21. [PMID: 32301972 PMCID: PMC7401711 DOI: 10.1167/iovs.61.4.21] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
Purpose Human corneal endothelial cells (hCECs) have limited regenerative capacity in vivo. Reduced hCEC density results in bullous keratopathy requiring corneal transplantation. This study reveals the role of transcription factor 4 (TCF4) in hCEC diseases and suggests that TCF4 may be a molecular target for hCEC regeneration. Methods Cell shape, cell proliferation rates, and proliferation-associated proteins were evaluated in normal or senescent hCECs. TCF4 was blocked by siRNA (si-TCF4) or activated using clustered regularly interspaced short palindromic repeats (CRISPR)/dCas9 activation systems (pl-TCF4). The corneal endothelium of six-week-old Sprague-Dawley (SD) rats was transfected by electroporation followed by cryoinjury. Results Cell proliferation rates and TCF4 levels were reduced in senescent cells. TCF4 CRISPR activation enhanced corneal endothelial wound healing. TCF4 regulated mitochondrial functions including mitochondrial membrane potential, mitochondrial superoxide levels, and energy production. The percentage of cells in the S-phase was reduced with si-TCF4 and increased with pl-TCF4. Cell proliferation and cell cycle-associated proteins were regulated by TCF4. Autophagy was induced by si-TCF4. In vivo transfection of CRISPR/dCas9 activation systems (a-TCF4) induced regeneration of corneal endothelium. Conclusions Corneal endothelial diseases are associated with TCF4 reduction; TCF4 may be a potential target for hCEC diseases. Gene therapy using TCF4 CRISPR/dCas9 may be an effective treatment for hCEC diseases.
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Human muscle pathology is associated with altered phosphoprotein profile of mitochondrial proteins in the skeletal muscle. J Proteomics 2020; 211:103556. [PMID: 31655151 DOI: 10.1016/j.jprot.2019.103556] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2019] [Revised: 10/08/2019] [Accepted: 10/17/2019] [Indexed: 12/29/2022]
Abstract
Analysis of human muscle diseases highlights the role of mitochondrial dysfunction in the skeletal muscle. Our previous work revealed that diverse upstream events correlated with altered mitochondrial proteome in human muscle biopsies. However, several proteins showed relatively unchanged expression suggesting that post-translational modifications, mainly protein phosphorylation could influence their activity and regulate mitochondrial processes. We conducted mitochondrial phosphoprotein profiling, by proteomics approach, of healthy human skeletal muscle (n = 10) and three muscle diseases (n = 10 each): Dysferlinopathy, Polymyositis and Distal Myopathy with Rimmed Vacuoles. Healthy human muscle mitochondrial proteins displayed 253 phosphorylation sites (phosphosites), which contributed to metabolic and redox processes and mitochondrial organization etc. Electron transport chain complexes accounted for 84 phosphosites. Muscle pathologies displayed 33 hyperphosphorylated and 14 hypophorphorylated sites with only 5 common proteins, indicating varied phosphorylation profile across muscle pathologies. Molecular modelling revealed altered local structure in the phosphorylated sites of Voltage-Dependent Anion Channel 1 and complex V subunit ATP5B1. Molecular dynamics simulations in complex I subunits NDUFV1, NDUFS1 and NDUFV2 revealed that phosphorylation induced structural alterations thereby influencing electron transfer and potentially altering enzyme activity. We propose that altered phosphorylation at specific sites could regulate mitochondrial protein function in the skeletal muscle during physiological and pathological processes.
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Ure DR, Trepanier DJ, Mayo PR, Foster RT. Cyclophilin inhibition as a potential treatment for nonalcoholic steatohepatitis (NASH). Expert Opin Investig Drugs 2019; 29:163-178. [DOI: 10.1080/13543784.2020.1703948] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Daren R. Ure
- Hepion Pharmaceuticals Inc, Edmonton, AB, Canada
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Mercuri E, Bönnemann CG, Muntoni F. Muscular dystrophies. Lancet 2019; 394:2025-2038. [PMID: 31789220 DOI: 10.1016/s0140-6736(19)32910-1] [Citation(s) in RCA: 242] [Impact Index Per Article: 48.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/19/2018] [Revised: 09/02/2019] [Accepted: 11/21/2019] [Indexed: 12/11/2022]
Abstract
Muscular dystrophies are primary diseases of muscle due to mutations in more than 40 genes, which result in dystrophic changes on muscle biopsy. Now that most of the genes responsible for these conditions have been identified, it is possible to accurately diagnose them and implement subtype-specific anticipatory care, as complications such as cardiac and respiratory muscle involvement vary greatly. This development and advances in the field of supportive medicine have changed the standard of care, with an overall improvement in the clinical course, survival, and quality of life of affected individuals. The improved understanding of the pathogenesis of these diseases is being used for the development of novel therapies. In the most common form, Duchenne muscular dystrophy, a few personalised therapies have recently achieved conditional approval and many more are at advanced stages of clinical development. In this Seminar, we concentrate on clinical manifestations, molecular pathogenesis, diagnostic strategy, and therapeutic developments for this group of conditions.
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Affiliation(s)
- Eugenio Mercuri
- Pediatric Neurology Unit, Università Cattolica del Sacro Cuore Roma, Rome, Italy; Nemo Clinical Centre, Fondazione Policlinico Universitario A Gemelli IRCCS, Rome, Italy
| | - Carsten G Bönnemann
- Neuromuscular and Neurogenetic Disorders of Childhood Section, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD, USA
| | - Francesco Muntoni
- Dubowitz Neuromuscular Centre, University College London, Great Ormond Street Institute of Child Health, London, UK; National Institute for Health Research Great Ormond Street Hospital Biomedical Research Centre, London, UK.
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Basement membrane collagens and disease mechanisms. Essays Biochem 2019; 63:297-312. [PMID: 31387942 PMCID: PMC6744580 DOI: 10.1042/ebc20180071] [Citation(s) in RCA: 51] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2019] [Revised: 07/09/2019] [Accepted: 07/22/2019] [Indexed: 12/28/2022]
Abstract
Basement membranes (BMs) are specialised extracellular matrix (ECM) structures and collagens are a key component required for BM function. While collagen IV is the major BM collagen, collagens VI, VII, XV, XVII and XVIII are also present. Mutations in these collagens cause rare multi-systemic diseases but these collagens have also been associated with major common diseases including stroke. Developing treatments for these conditions will require a collective effort to increase our fundamental understanding of the biology of these collagens and the mechanisms by which mutations therein cause disease. Novel insights into pathomolecular disease mechanisms and cellular responses to these mutations has been exploited to develop proof-of-concept treatment strategies in animal models. Combined, these studies have also highlighted the complexity of the disease mechanisms and the need to obtain a more complete understanding of these mechanisms. The identification of pathomolecular mechanisms of collagen mutations shared between different disorders represent an attractive prospect for treatments that may be effective across phenotypically distinct disorders.
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Biasutto L, Mattarei A, La Spina M, Azzolini M, Parrasia S, Szabò I, Zoratti M. Strategies to target bioactive molecules to subcellular compartments. Focus on natural compounds. Eur J Med Chem 2019; 181:111557. [PMID: 31374419 DOI: 10.1016/j.ejmech.2019.07.060] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2019] [Revised: 07/04/2019] [Accepted: 07/21/2019] [Indexed: 02/06/2023]
Abstract
Many potential pharmacological targets are present in multiple subcellular compartments and have different pathophysiological roles depending on location. In these cases, selective targeting of a drug to the relevant subcellular domain(s) may help to sharpen its impact by providing topological specificity, thus limiting side effects, and to concentrate the compound where needed, thus increasing its effectiveness. We review here the state of the art in precision subcellular delivery. The major approaches confer "homing" properties to the active principle via permanent or reversible (in pro-drug fashion) modifications, or through the use of special-design nanoparticles or liposomes to ferry a drug(s) cargo to its desired destination. An assortment of peptides, substituents with delocalized positive charges, custom-blended lipid mixtures, pH- or enzyme-sensitive groups provide the main tools of the trade. Mitochondria, lysosomes and the cell membrane may be mentioned as the fronts on which the most significant advances have been made. Most of the examples presented here have to do with targeting natural compounds - in particular polyphenols, known as pleiotropic agents - to one or the other subcellular compartment.
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Affiliation(s)
- Lucia Biasutto
- CNR Neuroscience Institute, Viale G. Colombo 3, 35121, Padova, Italy; Dept. Biomedical Sciences, University of Padova, Viale G. Colombo 3, 35121, Padova, Italy.
| | - Andrea Mattarei
- Dept. Pharmaceutical and Pharmacological Sciences, University of Padova, Via Marzolo 5, 35131, Padova, Italy
| | - Martina La Spina
- Dept. Biomedical Sciences, University of Padova, Viale G. Colombo 3, 35121, Padova, Italy
| | - Michele Azzolini
- Dept. Biomedical Sciences, University of Padova, Viale G. Colombo 3, 35121, Padova, Italy
| | - Sofia Parrasia
- Dept. Biomedical Sciences, University of Padova, Viale G. Colombo 3, 35121, Padova, Italy
| | - Ildikò Szabò
- CNR Neuroscience Institute, Viale G. Colombo 3, 35121, Padova, Italy; Dept. Biology, University of Padova, Viale G. Colombo 3, 35121, Padova, Italy
| | - Mario Zoratti
- CNR Neuroscience Institute, Viale G. Colombo 3, 35121, Padova, Italy; Dept. Biomedical Sciences, University of Padova, Viale G. Colombo 3, 35121, Padova, Italy
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Vissing CR, Hedermann G, Vissing J. Moderate-intensity aerobic exercise improves physical fitness in bethlem myopathy. Muscle Nerve 2019; 60:183-188. [PMID: 31026058 DOI: 10.1002/mus.26498] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2018] [Revised: 04/22/2019] [Accepted: 04/22/2019] [Indexed: 11/11/2022]
Abstract
INTRODUCTION Bethlem myopathy is caused by dysfunctional collagen VI assembly, leading to varying degrees of hyperlaxity, contractures and muscle weakness. Previous studies demonstrate that cardiovascular training is safe and beneficial in patients with myopathies. However, exercise exacerbates the dystrophic phenotype in collagen VI-knockout mice. METHODS Six men with Bethlem myopathy were included (4 training; 2 controls). After training, 2 patients detrained. Patients performed 10 weeks of home-based, moderate-intensity exercise monitored by a pulse-watch. The primary outcome was change in peak oxygen uptake (VO2peak ). Secondary outcomes were performances in functional tests. RESULTS VO2peak improved in the training group (16%, P = 0.017). Detraining led to regression of VO2peak toward baseline values (-8%; P = 0.03). No change was seen in the control group (-7%; P = 0.47). Performance in functional tests did not change significantly. Creatine kinase values were stable during the study. CONCLUSIONS Moderate-intensity exercise seems to safely improve oxidative function in patients with Bethlem myopathy. Muscle Nerve 60: 183-188, 2019.
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Affiliation(s)
- Christoffer Rasmus Vissing
- Copenhagen Neuromuscular Center, Department of Neurology, University of Copenhagen, Rigshospitalet, Blegdamsvej 9, DK-2100 Copenhagen
| | - Gitte Hedermann
- Copenhagen Neuromuscular Center, Department of Neurology, University of Copenhagen, Rigshospitalet, Blegdamsvej 9, DK-2100 Copenhagen
| | - John Vissing
- Copenhagen Neuromuscular Center, Department of Neurology, University of Copenhagen, Rigshospitalet, Blegdamsvej 9, DK-2100 Copenhagen
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Briston T, Selwood DL, Szabadkai G, Duchen MR. Mitochondrial Permeability Transition: A Molecular Lesion with Multiple Drug Targets. Trends Pharmacol Sci 2018; 40:50-70. [PMID: 30527591 DOI: 10.1016/j.tips.2018.11.004] [Citation(s) in RCA: 127] [Impact Index Per Article: 21.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2018] [Revised: 11/05/2018] [Accepted: 11/06/2018] [Indexed: 12/13/2022]
Abstract
Mitochondrial permeability transition, as the consequence of opening of a mitochondrial permeability transition pore (mPTP), is a cellular catastrophe. Initiating bioenergetic collapse and cell death, it has been implicated in the pathophysiology of major human diseases, including neuromuscular diseases of childhood, ischaemia-reperfusion injury, and age-related neurodegenerative disease. Opening of the mPTP represents a major therapeutic target, as it can be mitigated by a number of compounds. However, clinical studies have so far been disappointing. We therefore address the prospects and challenges faced in translating in vitro findings to clinical benefit. We review the role of mPTP opening in disease, discuss recent findings defining the putative structure of the mPTP, and explore strategies to identify novel, clinically useful mPTP inhibitors, highlighting key considerations in the drug discovery process.
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Affiliation(s)
- Thomas Briston
- Neurology Innovation Centre, Hatfield Research Laboratories, Eisai Ltd., Hatfield, UK.
| | - David L Selwood
- Wolfson Institute for Biomedical Research, Division of Medicine, University College London, London, UK
| | - Gyorgy Szabadkai
- Department of Cell and Developmental Biology, Consortium for Mitochondrial Research, University College London, London, UK; Department of Biomedical Sciences, University of Padua, Padua, Italy; The Francis Crick Institute, London, UK
| | - Michael R Duchen
- Department of Cell and Developmental Biology, Consortium for Mitochondrial Research, University College London, London, UK
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Andarawis-Puri N, Flatow EL. Promoting effective tendon healing and remodeling. J Orthop Res 2018; 36:3115-3124. [PMID: 30175859 PMCID: PMC6608714 DOI: 10.1002/jor.24133] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/01/2018] [Accepted: 08/06/2018] [Indexed: 02/04/2023]
Abstract
Daily activities subject our tendons to accumulation of sub-rupture fatigue injury which can lead to tendon rupture. Consequently, tendinopathies account for over 30% of musculoskeletal consultations. We adopted a multidisciplinary approach to determine the role of the extracellular matrix (ECM) in the pathogenesis of tendinopathy and impaired healing of ruptured tendons. We have been investigating three main areas: (i) the pathogenesis of tendon degeneration; (ii) approaches to promoting remodeling of sub-rupture fatigue injuries; and the (iii) role of the ECM in promoting scarless tendon healing. In this Kappa Delta Young Investigator award paper, we describe the key discoveries made in each of our three research areas of focus. Briefly, we discovered that sub-rupture fatigue damage can accumulate from just one bout of fatigue loading. Furthermore, any attempt to repair the fatigue damage diminishes as the severity of induced damage increases. We have utilized exercise to develop animal models of exercise-led degeneration and exercise-led repair of sub-rupture fatigue damage injuries, wherein underlying mechanisms can be uncovered, thereby overcoming a major hurdle to development of therapeutics. Since damage accumulation ultimately leads to rupture that is characterized by formation of a mechanically inferior scar, we have used the MRL/MpJ mouse to evaluate the role of the systemic environment and the local tendon environment in driving regeneration to identify new therapeutic pathways to promote scarless healing. Our data suggests that the therapeutic potential of the MRL/MpJ provisional ECM should be further explored as it may harness biological and structural mechanisms to promote scarless healing. © 2018 Orthopaedic Research Society. Published by Wiley Periodicals, Inc. J Orthop Res 36:3115-3124, 2018.
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Affiliation(s)
- Nelly Andarawis-Puri
- Sibley School of Mechanical and Aerospace Engineering, Cornell University, Ithaca, New York
- Hospital for Special Surgery, New York, New York
| | - Evan L. Flatow
- Department of Orthopaedic Surgery, Mount Sinai West, New York, New York
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Xiao Y, Karam C, Yi J, Zhang L, Li X, Yoon D, Wang H, Dhakal K, Ramlow P, Yu T, Mo Z, Ma J, Zhou J. ROS-related mitochondrial dysfunction in skeletal muscle of an ALS mouse model during the disease progression. Pharmacol Res 2018; 138:25-36. [PMID: 30236524 PMCID: PMC6263743 DOI: 10.1016/j.phrs.2018.09.008] [Citation(s) in RCA: 56] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/14/2018] [Revised: 09/07/2018] [Accepted: 09/07/2018] [Indexed: 02/06/2023]
Abstract
In amyotrophic lateral sclerosis (ALS), mitochondrial dysfunction and oxidative stress form a vicious cycle that promotes neurodegeneration and muscle wasting. To quantify the disease-stage-dependent changes of mitochondrial function and their relationship to the generation of reactive oxygen species (ROS), we generated double transgenic mice (G93A/cpYFP) that carry human ALS mutation SOD1G93A and mt-cpYFP transgenes, in which mt-cpYFP detects dynamic changes of ROS-related mitoflash events at individual mitochondria level. Compared with wild type mice, mitoflash activity in the SOD1G93A (G93A) mouse muscle showed an increased flashing frequency prior to the onset of ALS symptom (at the age of 2 months), whereas the onset of ALS symptoms (at the age of 4 months) is associated with drastic changes in the kinetics property of mitoflash signal with prolonged full duration at half maximum (FDHM). Elevated levels of cytosolic ROS in skeletal muscle derived from the SOD1G93A mice were confirmed with fluorescent probes, MitoSOX™ Red and ROS Brite™570. Immunoblotting analysis of subcellular mitochondrial fractionation of G93A muscle revealed an increased expression level of cyclophilin D (CypD), a regulatory component of the mitochondrial permeability transition pore (mPTP), at the age of 4 months but not at the age of 2 months. Transient overexpressing of SOD1G93A in skeletal muscle of wild type mice directly promoted mitochondrial ROS production with an enhanced mitoflash activity in the absence of motor neuron axonal withdrawal. Remarkably, the SOD1G93A-induced mitoflash activity was attenuated by the application of cyclosporine A (CsA), an inhibitor of CypD. Similar to the observation with the SOD1G93A transgenic mice, an increased expression level of CypD was also detected in skeletal muscle following transient overexpression of SOD1G93A. Overall, this study reveals a disease-stage-dependent change in mitochondrial function that is associated with CypD-dependent mPTP opening; and the ALS mutation SOD1G93A directly contributes to mitochondrial dysfunction in the absence of motor neuron axonal withdrawal.
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Affiliation(s)
- Yajuan Xiao
- Kansas City University of Medicine and Bioscience, Kansas City, USA; Rush University School of Medicine, Chicago, IL, USA
| | - Chehade Karam
- Rush University School of Medicine, Chicago, IL, USA
| | - Jianxun Yi
- Kansas City University of Medicine and Bioscience, Kansas City, USA; Rush University School of Medicine, Chicago, IL, USA
| | - Lin Zhang
- Kansas City University of Medicine and Bioscience, Kansas City, USA; Zunyi Medical College, Zunyi, China
| | - Xuejun Li
- Kansas City University of Medicine and Bioscience, Kansas City, USA
| | - Dosuk Yoon
- Kansas City University of Medicine and Bioscience, Kansas City, USA
| | - Huan Wang
- Kansas City University of Medicine and Bioscience, Kansas City, USA
| | - Kamal Dhakal
- Kansas City University of Medicine and Bioscience, Kansas City, USA
| | - Paul Ramlow
- Kansas City University of Medicine and Bioscience, Kansas City, USA
| | - Tian Yu
- Zunyi Medical College, Zunyi, China
| | - Zhaohui Mo
- 3rd Xiangya Hospital, Central South University, Changsha, China
| | - Jianjie Ma
- Wexner Medical Center, The Ohio State University, Columbus, OH, USA
| | - Jingsong Zhou
- Kansas City University of Medicine and Bioscience, Kansas City, USA; Rush University School of Medicine, Chicago, IL, USA.
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Castagnaro S, Chrisam M, Cescon M, Braghetta P, Grumati P, Bonaldo P. Extracellular Collagen VI Has Prosurvival and Autophagy Instructive Properties in Mouse Fibroblasts. Front Physiol 2018; 9:1129. [PMID: 30174616 PMCID: PMC6107713 DOI: 10.3389/fphys.2018.01129] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2018] [Accepted: 07/30/2018] [Indexed: 12/20/2022] Open
Abstract
Collagen VI (ColVI) is an abundant and distinctive extracellular matrix protein secreted by fibroblasts in different tissues. Human diseases linked to mutations on ColVI genes are primarily affecting skeletal muscle due to non-cell autonomous myofiber defects. To date, it is not known whether and how fibroblast homeostasis is affected by ColVI deficiency, a critical missing information as this may strengthen the use of patients' fibroblasts for preclinical purposes. Here, we established primary and immortalized fibroblast cultures from ColVI null (Col6a1-/-) mice, the animal model of ColVI-related diseases. We found that, under nutrient-stringent condition, lack of ColVI affects fibroblast survival, leading to increased apoptosis. Moreover, Col6a1-/- fibroblasts display defects in the autophagy/lysosome machinery, with impaired clearance of autophagosomes and failure of Parkin-dependent mitophagy. Col6a1-/- fibroblasts also show an increased activation of the Akt/mTOR pathway, compatible with the autophagy impairment, and adhesion onto purified ColVI elicits a major effect on the autophagic flux. Our findings reveal that ColVI ablation in fibroblasts impacts on autophagy regulation and cell survival, thus pointing at the new concept that this cell type may contribute to the pathological features of ColVI-related diseases.
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Affiliation(s)
- Silvia Castagnaro
- Department of Molecular Medicine, University of Padova, Padova, Italy
| | - Martina Chrisam
- Department of Molecular Medicine, University of Padova, Padova, Italy
| | - Matilde Cescon
- Department of Molecular Medicine, University of Padova, Padova, Italy
| | - Paola Braghetta
- Department of Molecular Medicine, University of Padova, Padova, Italy
| | - Paolo Grumati
- Department of Molecular Medicine, University of Padova, Padova, Italy
- Institute of Biochemistry II, Goethe University, Frankfurt, Germany
| | - Paolo Bonaldo
- Department of Molecular Medicine, University of Padova, Padova, Italy
- CRIBI Biotechnology Center, University of Padova, Padova, Italy
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Vitiello L, Marabita M, Sorato E, Nogara L, Forestan G, Mouly V, Salviati L, Acosta M, Blaauw B, Canton M. Drug Repurposing for Duchenne Muscular Dystrophy: The Monoamine Oxidase B Inhibitor Safinamide Ameliorates the Pathological Phenotype in mdx Mice and in Myogenic Cultures From DMD Patients. Front Physiol 2018; 9:1087. [PMID: 30154729 PMCID: PMC6102489 DOI: 10.3389/fphys.2018.01087] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2018] [Accepted: 07/23/2018] [Indexed: 12/11/2022] Open
Abstract
Oxidative stress and mitochondrial dysfunction play a crucial role in the pathophysiology of muscular dystrophies. We previously reported that the mitochondrial enzyme monoamine oxidase (MAO) is a relevant source of reactive oxygen species (ROS) not only in murine models of muscular dystrophy, in which it directly contributes to contractile impairment, but also in muscle cells from collagen VI-deficient patients. Here, we now assessed the efficacy of a novel MAO-B inhibitor, safinamide, using in vivo and in vitro models of Duchenne muscular dystrophy (DMD). Specifically, we found that administration of safinamide in 3-month-old mdx mice reduced myofiber damage and oxidative stress and improved muscle functionality. In vitro studies with myogenic cultures from mdx mice and DMD patients showed that even cultured dystrophic myoblasts were more susceptible to oxidative stress than matching cells from healthy donors. Indeed, upon exposure to the MAO substrate tyramine or to hydrogen peroxide, DMD muscle cells displayed a rise in ROS levels and a consequent mitochondrial depolarization. Remarkably, both phenotypes normalized when cultures were treated with safinamide. Given that safinamide is already in clinical use for neurological disorders, our findings could pave the way toward a promising translation into clinical trials for DMD patients as a classic case of drug repurposing.
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Affiliation(s)
- Libero Vitiello
- Department of Biology, University of Padova, Padova, Italy.,Interuniversity Institute of Myology, Padova, Italy
| | | | - Elisa Sorato
- Department of Biomedical Sciences, University of Padova, Padova, Italy
| | - Leonardo Nogara
- Venetian Institute of Molecular Medicine (VIMM), Padova, Italy
| | - Giada Forestan
- Department of Biomedical Sciences, University of Padova, Padova, Italy
| | - Vincent Mouly
- UMRS 974 UPMC-INSERM, Center for Research in Myology, Paris, France
| | - Leonardo Salviati
- Fondazione Istituto di Ricerca Pediatrica Città della Speranza - IRP, Padova, Italy
| | - Manuel Acosta
- Fondazione Istituto di Ricerca Pediatrica Città della Speranza - IRP, Padova, Italy
| | - Bert Blaauw
- Interuniversity Institute of Myology, Padova, Italy.,Venetian Institute of Molecular Medicine (VIMM), Padova, Italy.,Department of Biomedical Sciences, University of Padova, Padova, Italy
| | - Marcella Canton
- Venetian Institute of Molecular Medicine (VIMM), Padova, Italy.,Department of Biomedical Sciences, University of Padova, Padova, Italy.,Fondazione Istituto di Ricerca Pediatrica Città della Speranza - IRP, Padova, Italy
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Mohassel P, Foley AR, Bönnemann CG. Extracellular matrix-driven congenital muscular dystrophies. Matrix Biol 2018; 71-72:188-204. [PMID: 29933045 DOI: 10.1016/j.matbio.2018.06.005] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2018] [Revised: 06/15/2018] [Accepted: 06/15/2018] [Indexed: 12/20/2022]
Abstract
Skeletal muscle function relies on the myofibrillar apparatus inside myofibers as well as an intact extracellular matrix surrounding each myofiber. Muscle extracellular matrix (ECM) plays several roles including but not limited to force transmission, regulation of growth factors and inflammatory responses, and influencing muscle stem cell (i.e. satellite cell) proliferation and differentiation. In most myopathies, muscle ECM undergoes remodeling and fibrotic changes that may be maladaptive for normal muscle function and recovery. In addition, mutations in skeletal muscle ECM and basement proteins can cause muscle disease. In this review, we summarize the clinical features of two of the most common congenital muscular dystrophies, COL6-related dystrophies and LAMA2-related dystrophies, which are caused by mutations in muscle ECM and basement membrane proteins. The study of clinical features of these diseases has helped to inform basic research and understanding of the biology of muscle ECM. In return, basic studies of muscle ECM have provided the conceptual framework to develop therapeutic interventions for these and other similar disorders of muscle.
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Affiliation(s)
- Payam Mohassel
- Neuromuscular and Neurogenetic Disorders of Childhood Section, Neurogenetics Branch, National Institute of Neurological Disorders and Stroke, National Institutes of Health, United States of America
| | - A Reghan Foley
- Neuromuscular and Neurogenetic Disorders of Childhood Section, Neurogenetics Branch, National Institute of Neurological Disorders and Stroke, National Institutes of Health, United States of America
| | - Carsten G Bönnemann
- Neuromuscular and Neurogenetic Disorders of Childhood Section, Neurogenetics Branch, National Institute of Neurological Disorders and Stroke, National Institutes of Health, United States of America.
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Woidy M, Muntau AC, Gersting SW. Inborn errors of metabolism and the human interactome: a systems medicine approach. J Inherit Metab Dis 2018; 41:285-296. [PMID: 29404805 PMCID: PMC5959957 DOI: 10.1007/s10545-018-0140-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/08/2017] [Revised: 01/01/2018] [Accepted: 01/10/2018] [Indexed: 12/14/2022]
Abstract
The group of inborn errors of metabolism (IEM) displays a marked heterogeneity and IEM can affect virtually all functions and organs of the human organism; however, IEM share that their associated proteins function in metabolism. Most proteins carry out cellular functions by interacting with other proteins, and thus are organized in biological networks. Therefore, diseases are rarely the consequence of single gene mutations but of the perturbations caused in the related cellular network. Systematic approaches that integrate multi-omics and database information into biological networks have successfully expanded our knowledge of complex disorders but network-based strategies have been rarely applied to study IEM. We analyzed IEM on a proteome scale and found that IEM-associated proteins are organized as a network of linked modules within the human interactome of protein interactions, the IEM interactome. Certain IEM disease groups formed self-contained disease modules, which were highly interlinked. On the other hand, we observed disease modules consisting of proteins from many different disease groups in the IEM interactome. Moreover, we explored the overlap between IEM and non-IEM disease genes and applied network medicine approaches to investigate shared biological pathways, clinical signs and symptoms, and links to drug targets. The provided resources may help to elucidate the molecular mechanisms underlying new IEM, to uncover the significance of disease-associated mutations, to identify new biomarkers, and to develop novel therapeutic strategies.
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Affiliation(s)
- Mathias Woidy
- University Children's Hospital, University Medical Center Hamburg Eppendorf, Martinistrasse 52, 20246, Hamburg, Germany
| | - Ania C Muntau
- University Children's Hospital, University Medical Center Hamburg Eppendorf, Martinistrasse 52, 20246, Hamburg, Germany
| | - Søren W Gersting
- Department of Molecular Pediatrics, Dr. von Hauner Children's Hospital, Ludwig-Maximilians-University Munich, Lindwurmstrasse 4, 80336, Munich, Germany.
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46
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Dowling JJ, D. Gonorazky H, Cohn RD, Campbell C. Treating pediatric neuromuscular disorders: The future is now. Am J Med Genet A 2018; 176:804-841. [PMID: 28889642 PMCID: PMC5900978 DOI: 10.1002/ajmg.a.38418] [Citation(s) in RCA: 74] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2017] [Accepted: 07/31/2017] [Indexed: 12/12/2022]
Abstract
Pediatric neuromuscular diseases encompass all disorders with onset in childhood and where the primary area of pathology is in the peripheral nervous system. These conditions are largely genetic in etiology, and only those with a genetic underpinning will be presented in this review. This includes disorders of the anterior horn cell (e.g., spinal muscular atrophy), peripheral nerve (e.g., Charcot-Marie-Tooth disease), the neuromuscular junction (e.g., congenital myasthenic syndrome), and the muscle (myopathies and muscular dystrophies). Historically, pediatric neuromuscular disorders have uniformly been considered to be without treatment possibilities and to have dire prognoses. This perception has gradually changed, starting in part with the discovery and widespread application of corticosteroids for Duchenne muscular dystrophy. At present, several exciting therapeutic avenues are under investigation for a range of conditions, offering the potential for significant improvements in patient morbidities and mortality and, in some cases, curative intervention. In this review, we will present the current state of treatment for the most common pediatric neuromuscular conditions, and detail the treatment strategies with the greatest potential for helping with these devastating diseases.
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Affiliation(s)
- James J. Dowling
- Division of NeurologyHospital for Sick ChildrenTorontoOntarioCanada
- Program for Genetics and Genome BiologyHospital for Sick ChildrenTorontoOntarioCanada
- Departments of Paediatrics and Molecular GeneticsUniversity of TorontoTorontoOntarioCanada
| | | | - Ronald D. Cohn
- Program for Genetics and Genome BiologyHospital for Sick ChildrenTorontoOntarioCanada
- Departments of Paediatrics and Molecular GeneticsUniversity of TorontoTorontoOntarioCanada
| | - Craig Campbell
- Department of PediatricsClinical Neurological SciencesEpidemiologyWestern UniversityLondonOntarioCanada
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47
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Leruez S, Verny C, Bonneau D, Procaccio V, Lenaers G, Amati-Bonneau P, Reynier P, Scherer C, Prundean A, Orssaud C, Zanlonghi X, Rougier MB, Tilikete C, Miléa D. Cyclosporine A does not prevent second-eye involvement in Leber's hereditary optic neuropathy. Orphanet J Rare Dis 2018; 13:33. [PMID: 29454364 PMCID: PMC5816422 DOI: 10.1186/s13023-018-0773-y] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2017] [Accepted: 02/04/2018] [Indexed: 11/10/2022] Open
Abstract
BACKRGROUND Evaluation of the efficacy of oral cyclosporine A as a prophylactic agent in preventing second-eye involvement in Leber's hereditary optic neuropathy (LHON) in a prospective, open-label, non-randomized, multicenter pilot study. Only LHON patients aged 18 years or more, with confirmed primary mitochondrial DNA mutations and strictly unilateral optic neuropathy occurring within 6 months prior to enrolment, were included in the study. All these patients, receiving treatment with oral cyclosporine (Neoral®, Novartis) at 2.5 mg/kg/day, were examined at three-month intervals for a year. The primary endpoint was the best corrected visual acuity in the unaffected eye; the secondary endpoints were the best corrected visual acuity in the first eye affected, the mean visual field defect on automated perimetry, the thickness of the perifoveal retinal ganglion cell inner plexiform layer, and the thickness of the peripapillary retinal nerve fiber layer in both eyes. RESULTS Among the 24 patients referred to our institution with genetically confirmed LHON, between July 2011 and April 2014, only five patients, four males and one female, fulfilled the inclusion criteria. Age at enrolment ranged from 19 to 42 years (mean: 27.2 years; median: 26 years), four patients harbored the m.11778G > A pathogenic variant, and one the m.14484 T > C pathogenic variant. The time-interval between the onset of symptoms and inclusion in the study ranged from 7 to 17 weeks (mean: 11.8 weeks; median: 9 weeks). Despite treatment with oral cyclosporine A, all patients eventually experienced bilateral eye involvement, occurring within 11-65 weeks after the initiation of treatment. Over the study time period, the average best corrected visual acuity worsened in the first eye affected; by the end of the study, both eyes were equally affected. CONCLUSIONS Oral cyclosporine, at 2.5 mg/kg/day, did not prevent second-eye involvement in patients with strictly unilateral Leber's hereditary optic neuropathy. TRIAL REGISTRATION ClinicalTrials.gov Identifier: NCT02176733 . Registrated June 25, 2014.
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Affiliation(s)
- Stéphanie Leruez
- Service d'Ophtalmologie, CHU Angers, 49000, Angers, France.,Institut MITOVASC, UMR CNRS 6015-INSERM1083, Université d'Angers, 49000, Angers, France
| | - Christophe Verny
- Institut MITOVASC, UMR CNRS 6015-INSERM1083, Université d'Angers, 49000, Angers, France.,Centre de référence des maladies neurogénétiques, Service de Neurologie, CHU Angers, 49000, Angers, France
| | - Dominique Bonneau
- Institut MITOVASC, UMR CNRS 6015-INSERM1083, Université d'Angers, 49000, Angers, France
| | - Vincent Procaccio
- Institut MITOVASC, UMR CNRS 6015-INSERM1083, Université d'Angers, 49000, Angers, France
| | - Guy Lenaers
- Institut MITOVASC, UMR CNRS 6015-INSERM1083, Université d'Angers, 49000, Angers, France
| | | | - Pascal Reynier
- Institut MITOVASC, UMR CNRS 6015-INSERM1083, Université d'Angers, 49000, Angers, France
| | - Clarisse Scherer
- Institut MITOVASC, UMR CNRS 6015-INSERM1083, Université d'Angers, 49000, Angers, France.,Centre de référence des maladies neurogénétiques, Service de Neurologie, CHU Angers, 49000, Angers, France
| | - Adriana Prundean
- Institut MITOVASC, UMR CNRS 6015-INSERM1083, Université d'Angers, 49000, Angers, France.,Centre de référence des maladies neurogénétiques, Service de Neurologie, CHU Angers, 49000, Angers, France
| | - Christophe Orssaud
- Unité Fonctionnelle d'Ophtalmologie, Centre de référence des Maladies Rares en Ophtalmologie OPHTARA, Hôpital Européen Georges Pompidou, Assistance Publique Hôpitaux de Paris, 75015, Paris, France
| | - Xavier Zanlonghi
- Centre de compétence maladie rare, Clinique Jules Verne, 44300, Nantes, France
| | | | - Caroline Tilikete
- Unité de Neuro-Ophtalmologie, Hospices Civils de Lyon, Hôpital Neurologique, 69677, Bron, France
| | - Dan Miléa
- Service d'Ophtalmologie, CHU Angers, 49000, Angers, France. .,Singapore Eye Research Institute, Singapore National Eye Centre and Duke-NUS, Singapore, Singapore. .,Angers University Hospital, Angers, France.
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48
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Lamandé SR, Bateman JF. Collagen VI disorders: Insights on form and function in the extracellular matrix and beyond. Matrix Biol 2017; 71-72:348-367. [PMID: 29277723 DOI: 10.1016/j.matbio.2017.12.008] [Citation(s) in RCA: 105] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2017] [Revised: 12/13/2017] [Accepted: 12/16/2017] [Indexed: 12/18/2022]
Abstract
Mutations in the three canonical collagen VI genes, COL6A1, COL6A2 and COL6A3, cause a spectrum of muscle disease from Bethlem myopathy at the mild end to the severe Ullrich congenital muscular dystrophy. Mutations can be either dominant or recessive and the resulting clinical severity is influenced by the way mutations impact the complex collagen VI assembly process. Most mutations are found towards the N-terminus of the triple helical collagenous domain and compromise extracellular microfibril assembly. Outside the triple helix collagen VI is highly polymorphic and discriminating mutations from rare benign changes remains a major diagnostic challenge. Collagen VI deficiency alters extracellular matrix structure and biomechanical properties and leads to increased apoptosis and oxidative stress, decreased autophagy, and impaired muscle regeneration. Therapies that target these downstream consequences have been tested in a collagen VI null mouse and also in small human trials where they show modest clinical efficacy. An important role for collagen VI in obesity, cancer and diabetes is emerging. A major barrier to developing effective therapies is the paucity of information about how collagen VI deficiency in the extracellular matrix signals the final downstream consequences - the receptors involved and the intracellular messengers await further characterization.
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Affiliation(s)
- Shireen R Lamandé
- Musculoskeletal Research, Murdoch Children's Research Institute, Royal Children's Hospital, Parkville, Vic, Australia; Department of Paediatrics, University of Melbourne, Parkville, Vic, Australia.
| | - John F Bateman
- Musculoskeletal Research, Murdoch Children's Research Institute, Royal Children's Hospital, Parkville, Vic, Australia; Department of Biochemistry and Molecular Biology, University of Melbourne, Parkville, Vic, Australia
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Schiavone M, Zulian A, Menazza S, Petronilli V, Argenton F, Merlini L, Sabatelli P, Bernardi P. Alisporivir rescues defective mitochondrial respiration in Duchenne muscular dystrophy. Pharmacol Res 2017; 125:122-131. [DOI: 10.1016/j.phrs.2017.09.001] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/26/2017] [Revised: 09/05/2017] [Accepted: 09/05/2017] [Indexed: 01/09/2023]
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Zuber J, Sykes M. Mechanisms of Mixed Chimerism-Based Transplant Tolerance. Trends Immunol 2017; 38:829-843. [PMID: 28826941 PMCID: PMC5669809 DOI: 10.1016/j.it.2017.07.008] [Citation(s) in RCA: 61] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2017] [Revised: 06/24/2017] [Accepted: 07/19/2017] [Indexed: 02/06/2023]
Abstract
Immune responses to allografts represent a major barrier in organ transplantation. Immune tolerance to avoid chronic immunosuppression is a critical goal in the field, recently achieved in the clinic by combining bone marrow transplantation (BMT) with kidney transplantation following non-myeloablative conditioning. At high levels of chimerism such protocols can permit central deletional tolerance, but with a significant risk of graft-versus-host (GVH) disease (GVHD). By contrast, transient chimerism-based tolerance is devoid of GVHD risk and appears to initially depend on regulatory T cells (Tregs) followed by gradual, presumably peripheral, clonal deletion of donor-reactive T cells. Here we review recent mechanistic insights into tolerance and the development of more robust and safer protocols for tolerance induction that will be guided by innovative immune monitoring tools.
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Affiliation(s)
- Julien Zuber
- Service de Transplantation Rénale, Hôpital Necker, Université Paris Descartes, Paris, France; INSERM UMRS_1163, IHU Imagine, Paris, France.
| | - Megan Sykes
- Columbia Center for Translational Immunology, Department of Medicine, Columbia University, New York, NY 10032, USA; Department of Surgery, Columbia University, New York, NY 10032, USA; Department of Microbiology and Immunology, Columbia University Center, New York, NY 10032, USA.
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