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Abad C, Pinal-Fernandez I, Guillou C, Bourdenet G, Drouot L, Cosette P, Giannini M, Debrut L, Jean L, Bernard S, Genty D, Zoubairi R, Remy-Jouet I, Geny B, Boitard C, Mammen A, Meyer A, Boyer O. IFNγ causes mitochondrial dysfunction and oxidative stress in myositis. Nat Commun 2024; 15:5403. [PMID: 38926363 PMCID: PMC11208592 DOI: 10.1038/s41467-024-49460-1] [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: 07/28/2023] [Accepted: 06/06/2024] [Indexed: 06/28/2024] Open
Abstract
Idiopathic inflammatory myopathies (IIMs) are severe autoimmune diseases with poorly understood pathogenesis and unmet medical needs. Here, we examine the role of interferon γ (IFNγ) using NOD female mice deficient in the inducible T cell co-stimulator (Icos), which have previously been shown to develop spontaneous IFNγ-driven myositis mimicking human disease. Using muscle proteomic and spatial transcriptomic analyses we reveal profound myofiber metabolic dysregulation in these mice. In addition, we report muscle mitochondrial abnormalities and oxidative stress in diseased mice. Supporting a pathogenic role for oxidative stress, treatment with a reactive oxygen species (ROS) buffer compound alleviated myositis, preserved muscle mitochondrial ultrastructure and respiration, and reduced inflammation. Mitochondrial anomalies and oxidative stress were diminished following anti-IFNγ treatment. Further transcriptomic analysis in IIMs patients and human myoblast in vitro studies supported the link between IFNγ and mitochondrial dysfunction observed in mice. These results suggest that mitochondrial dysfunction, ROS and inflammation are interconnected in a self-maintenance loop, opening perspectives for mitochondria therapy and/or ROS targeting drugs in myositis.
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Affiliation(s)
- Catalina Abad
- Univ Rouen Normandie, Inserm, UMR1234, FOCIS Center of Excellence PAn'THER, F-76000, Rouen, France
| | - Iago Pinal-Fernandez
- Muscle Disease Unit, National Institute of Arthritis and Musculoskeletal and Skin Diseases, National Institutes of Health, Bethesda, MD, USA
- Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Clement Guillou
- Univ Rouen Normandie, Inserm US 51, CNRS UAR 2026, HeRacLeS PISSARO, F-76000, Rouen, France
| | - Gwladys Bourdenet
- Univ Rouen Normandie, Inserm, UMR1234, FOCIS Center of Excellence PAn'THER, F-76000, Rouen, France
| | - Laurent Drouot
- Univ Rouen Normandie, Inserm, UMR1234, FOCIS Center of Excellence PAn'THER, F-76000, Rouen, France
| | - Pascal Cosette
- Univ Rouen Normandie, Inserm US 51, CNRS UAR 2026, HeRacLeS PISSARO, F-76000, Rouen, France
- Univ Rouen Normandie, INSA Rouen Normandie, CNRS, Normandie Univ, PBS UMR 6270, F-76000, Rouen, France
| | - Margherita Giannini
- Translational Medicine Federation of Strasbourg, Team 3072, Faculty of Medicine, University of Strasbourg, Strasbourg, France
- Unité exploration fonctionnelle musculaire-service de physiologie, Centre National de Référence des Maladies Auto-Immunes Systémiques Rares de l'Est et du Sud-Ouest -Service de rhumatologie, Hôpitaux Universitaires de Strasbourg, Strasbourg, France
| | - Lea Debrut
- Translational Medicine Federation of Strasbourg, Team 3072, Faculty of Medicine, University of Strasbourg, Strasbourg, France
| | - Laetitia Jean
- Univ Rouen Normandie, Inserm, UMR1234, FOCIS Center of Excellence PAn'THER, F-76000, Rouen, France
| | - Sophie Bernard
- Univ Rouen Normandie, Inserm US51, CNRS UAR2026, HeRacLeS PRIMACEN, F-76000, Rouen, France
| | - Damien Genty
- CHU Rouen, Department of Pathology, F-76000, Rouen, France
| | - Rachid Zoubairi
- Univ Rouen Normandie, Inserm, UMR1234, FOCIS Center of Excellence PAn'THER, F-76000, Rouen, France
| | - Isabelle Remy-Jouet
- Univ Rouen Normandie, Inserm, UMR1096, BOSS facility, F-76000, Rouen, France
| | - Bernard Geny
- Translational Medicine Federation of Strasbourg, Team 3072, Faculty of Medicine, University of Strasbourg, Strasbourg, France
- Unité exploration fonctionnelle musculaire-service de physiologie, Centre National de Référence des Maladies Auto-Immunes Systémiques Rares de l'Est et du Sud-Ouest -Service de rhumatologie, Hôpitaux Universitaires de Strasbourg, Strasbourg, France
| | - Christian Boitard
- Cochin Institute, Paris Descartes University, Sorbonne Paris Cité, Paris, France
| | - Andrew Mammen
- Muscle Disease Unit, National Institute of Arthritis and Musculoskeletal and Skin Diseases, National Institutes of Health, Bethesda, MD, USA
- Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, MD, USA
- Department of Medicine, Division of Rheumatology, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Alain Meyer
- Translational Medicine Federation of Strasbourg, Team 3072, Faculty of Medicine, University of Strasbourg, Strasbourg, France
- Unité exploration fonctionnelle musculaire-service de physiologie, Centre National de Référence des Maladies Auto-Immunes Systémiques Rares de l'Est et du Sud-Ouest -Service de rhumatologie, Hôpitaux Universitaires de Strasbourg, Strasbourg, France
| | - Olivier Boyer
- Univ Rouen Normandie, Inserm, UMR1234, FOCIS Center of Excellence PAn'THER, F-76000, Rouen, France.
- CHU Rouen, Department of Immunology and Biotherapy, F-76000, Rouen, France.
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Lodin K, Espinosa-Ortega F, Lundberg IE, Alexanderson H. The Role of Exercise to Improve Physiological, Physical and Psychological Health Outcome in Idiopathic Inflammatory Myopathies (IIM). J Inflamm Res 2024; 17:3563-3585. [PMID: 38855165 PMCID: PMC11162627 DOI: 10.2147/jir.s377102] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2023] [Accepted: 05/14/2024] [Indexed: 06/11/2024] Open
Abstract
Idiopathic inflammatory myopathies (IIM) impact all aspects of health, physiological, physical, and psychological. Hallmark symptoms of IIM are muscle weakness, reduced muscle endurance and aerobic capacity. Recently, pain and fatigue as well as anxiety and depression have emerged as common and debilitating symptoms in patients with IIM. The aim of this scoping review is to, in a holistic way, describe how IIM impact patients' physiological, physical, and psychological health and how exercise has a role to treat as well as potentially counteract the effects of the disease. Inflammation induces non-immune response and organ damage. These changes with additional impact of physical inactivity lead to muscle impairment and reduced aerobic capacity. Pain, fatigue and low psychological well-being and overall quality of life are also common health aspects of IIM. Medical treatment can reduce inflammation but has in turn serious side effects such as muscle atrophy, type-II diabetes, and hypertension, which exercise has the potential to treat, and perhaps also counteract. In addition, exercise improves muscle function, aerobic capacity and might also reduce fatigue and pain. New evidence shows that reducing systemic inflammation may also improve patient-reported subjective health, quality of life and psychological well-being. Exercise in combination with medical treatment is becoming an important part of the treatment for patients with IIM as exercise has the potential to promote health aspects of various dimensions in patients with IIM.
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Affiliation(s)
- Karin Lodin
- Division of Rheumatology, Department of Medicine Solna, Karolinska Institutet, Stockholm, Sweden
- Department of Gastro, Dermatology and Rheumatology, Theme Inflammation and Aging, Karolinska University Hospital, Stockholm, Sweden
| | - Fabricio Espinosa-Ortega
- Division of Rheumatology, Department of Medicine Solna, Karolinska Institutet, Stockholm, Sweden
- Department of Gastro, Dermatology and Rheumatology, Theme Inflammation and Aging, Karolinska University Hospital, Stockholm, Sweden
| | - Ingrid E Lundberg
- Division of Rheumatology, Department of Medicine Solna, Karolinska Institutet, Stockholm, Sweden
- Department of Gastro, Dermatology and Rheumatology, Theme Inflammation and Aging, Karolinska University Hospital, Stockholm, Sweden
| | - Helene Alexanderson
- Division of Rheumatology, Department of Medicine Solna, Karolinska Institutet, Stockholm, Sweden
- Medical Unit Allied Health Professionals, Theme Women’s Health and Health Professionals, Karolinska University Hospital, Stockholm, Sweden
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Slavin MB, Khemraj P, Hood DA. Exercise, mitochondrial dysfunction and inflammasomes in skeletal muscle. Biomed J 2024; 47:100636. [PMID: 37499756 PMCID: PMC10828562 DOI: 10.1016/j.bj.2023.100636] [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: 05/05/2023] [Revised: 07/18/2023] [Accepted: 07/20/2023] [Indexed: 07/29/2023] Open
Abstract
In the broad field of inflammation, skeletal muscle is a tissue that is understudied. Yet it represents about 40% of body mass in non-obese individuals and is therefore of fundamental importance for whole body metabolism and health. This article provides an overview of the unique features of skeletal muscle tissue, as well as its adaptability to exercise. This ability to adapt, particularly with respect to mitochondrial content and function, confers a level of metabolic "protection" against energy consuming events, and adds a measure of quality control that determines the phenotypic response to stress. Thus, we describe the particular role of mitochondria in promoting inflammasome activation in skeletal muscle, contributing to muscle wasting and dysfunction in aging, disuse and metabolic disease. We will then discuss how exercise training can be anti-inflammatory, mitigating the chronic inflammation that is observed in these conditions, potentially through improvements in mitochondrial quality and function.
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Affiliation(s)
- Mikhaela B Slavin
- School of Kinesiology and Health Science, Muscle Health Research Centre, York University, Toronto, ON, M3J 1P3, Canada
| | - Priyanka Khemraj
- School of Kinesiology and Health Science, Muscle Health Research Centre, York University, Toronto, ON, M3J 1P3, Canada
| | - David A Hood
- School of Kinesiology and Health Science, Muscle Health Research Centre, York University, Toronto, ON, M3J 1P3, Canada.
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Li Y, Xu J, Hong Y, Li Z, Xing X, Zhufeng Y, Lu D, Liu X, He J, Li Y, Sun X. Metagenome-wide association study of gut microbiome features for myositis. Clin Immunol 2023; 255:109738. [PMID: 37595937 DOI: 10.1016/j.clim.2023.109738] [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: 03/22/2023] [Revised: 08/11/2023] [Accepted: 08/12/2023] [Indexed: 08/20/2023]
Abstract
PURPOSE The clinical relevance and pathogenic role of gut microbiome in both myositis and its associated interstitial lung disease (ILD) are still unclear. The purpose of this study was to investigate the role of gut microbiome in myositis through comprehensive metagenomic-wide association studies (MWAS). METHODS We conducted MWAS of the myositis gut microbiome in a Chinese cohort by using whole-genome shotgun sequencing of high depth, including 30 myositis patients and 31 healthy controls (HC). Among the myositis patients, 11 developed rapidly progressive interstitial lung disease (RP-ILD) and 10 had chronic ILD (C-ILD). RESULTS Analysis for overall distribution level of the bacteria showed Alistipes onderdonkii, Parabacteroides distasonis and Escherichia coli were upregulated, Lachnospiraceae bacterium GAM79, Roseburia intestinalis, and Akkermansia muciniphila were downregulated in patients with myositis compared to HC. Bacteroides thetaiotaomicron, Parabacteroides distasonis and Escherichia coli were upregulated, Bacteroides A1C1 and Bacteroides xylanisolvens were downregulated in RP-ILD cases compared with C-ILD cases. A variety of biological pathways related to metabolism were enriched in the myositis and HC, RP-ILD and C-ILD comparison. And in the analyses for microbial contribution in metagenomic biological pathways, we have found that E. coli played an important role in the pathway expression in both myositis group and myositis-associated RP-ILD group. Anti-PL-12 antibody, anti-Ro-52 antibody, and anti-EJ antibody were found to have positive correlation with bacterial diversity (Shannon-wiener diversity index and Chao1, richness estimator) between myositis group and control groups. The combination of E. coli and R. intestinalis could distinguish myositis group from HC effectively. R. intestinalis can also be applied in the distinguishment of RP-ILD group vs. C-ILD group in myositis patients. CONCLUSION Our MWAS study first revealed the link between gut microbiome and pathgenesis of myositis, which may help us understand the role of gut microbiome in the etiology of myositis and myositis-associated RP-ILD.
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Affiliation(s)
- Yimin Li
- Department of Rheumatology & Immunology, Beijing Key Laboratory for Rheumatism Mechanism and Immune Diagnosis (BZ0135), Peking University People's Hospital, Beijing, China; Department of Rheumatology, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Jun Xu
- Department of Gastroenterology, Clinical Center of Immune-Mediated Digestive Diseases, Institute of Clinical Molecular Biology & Central Laboratory, Peking University People's Hospital, Beijing 100044, China
| | - Yixiang Hong
- Department of Rheumatology & Immunology, Beijing Key Laboratory for Rheumatism Mechanism and Immune Diagnosis (BZ0135), Peking University People's Hospital, Beijing, China
| | - Zijun Li
- Department of Rheumatology & Immunology, Beijing Key Laboratory for Rheumatism Mechanism and Immune Diagnosis (BZ0135), Peking University People's Hospital, Beijing, China
| | - Xiaoyan Xing
- Department of Rheumatology & Immunology, Beijing Key Laboratory for Rheumatism Mechanism and Immune Diagnosis (BZ0135), Peking University People's Hospital, Beijing, China
| | - Yunzhi Zhufeng
- Department of Rheumatology & Immunology, Beijing Key Laboratory for Rheumatism Mechanism and Immune Diagnosis (BZ0135), Peking University People's Hospital, Beijing, China
| | - Dan Lu
- Institute of Systems Biomedicine, School of Basic Medical Sciences, Peking University Health Science Center, Beijing, China
| | - Xu Liu
- Department of Rheumatology & Immunology, Beijing Key Laboratory for Rheumatism Mechanism and Immune Diagnosis (BZ0135), Peking University People's Hospital, Beijing, China
| | - Jing He
- Department of Rheumatology & Immunology, Beijing Key Laboratory for Rheumatism Mechanism and Immune Diagnosis (BZ0135), Peking University People's Hospital, Beijing, China
| | - Yuhui Li
- Department of Rheumatology & Immunology, Beijing Key Laboratory for Rheumatism Mechanism and Immune Diagnosis (BZ0135), Peking University People's Hospital, Beijing, China.
| | - Xiaolin Sun
- Department of Rheumatology & Immunology, Beijing Key Laboratory for Rheumatism Mechanism and Immune Diagnosis (BZ0135), Peking University People's Hospital, Beijing, China.
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Reay DP, Tabib T, Wang Y, Oriss TB, Young NA, Lafyatis RA, Jarjour WN, Clemens PR, Ascherman DP. Antigen-driven T cell-macrophage interactions mediate the interface between innate and adaptive immunity in histidyl-tRNA synthetase-induced myositis. Front Immunol 2023; 14:1238221. [PMID: 37809058 PMCID: PMC10556668 DOI: 10.3389/fimmu.2023.1238221] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2023] [Accepted: 09/04/2023] [Indexed: 10/10/2023] Open
Abstract
Introduction Previous work in humans has demonstrated that both innate and adaptive immune signaling pathways contribute to the pathogenesis of idiopathic inflammatory myopathy (IIM), a systemic autoimmune disease targeting muscle as well as extra-muscular organs. To better define interactive signaling networks in IIM, we characterized the cellular phenotype and transcriptomic profiles of muscle-infiltrating cells in our established murine model of histidyl-tRNA synthetase (HRS)-induced myositis. Methods Myositis was induced in wild type (WT) and various congenic/mutant strains of C57BL/6 mice through intramuscular immunization with recombinant HRS. Histopathological, immunohistochemical, flow cytometric, and transcriptomic assessments were used to characterize the functional relationship between muscle-infiltrating cell populations in these strains lacking different components of innate and/or adaptive immune signaling. Results RAG1 KO mice developed markedly reduced muscle inflammation relative to WT mice, demonstrating a key requirement for T cells in driving HRS-induced myositis. While the reduction of mononuclear cell infiltrates in CD4-Cre.MyD88fl/fl conditional knockout mice and OT-II TCR transgenic mice highlighted roles for both innate and TCR-mediated/adaptive immune signaling in T cells, diminished inflammation in Lyz2-Cre.MyD88fl/fl conditional knockout mice underscored the importance of macrophage/myeloid cell populations in supporting T cell infiltration. Single cell RNA sequencing-based clustering of muscle-infiltrating subpopulations and associated pathway analyses showed that perturbations of T cell signaling/function alter the distribution and phenotype of macrophages, fibroblasts, and other non-lymphoid cell populations contributing to HRS-induced myositis. Discussion Overall, HRS-induced myositis reflects the complex interplay between multiple cell types that collectively drive a TH1-predominant, pro-inflammatory tissue phenotype requiring antigen-mediated activation of both MyD88- and TCR-dependent T cell signaling pathways.
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Affiliation(s)
- Daniel P Reay
- Department of Medicine, University of Pittsburgh School of Medicine, Pittsburgh, PA, United States
| | - Tracy Tabib
- Department of Medicine, University of Pittsburgh School of Medicine, Pittsburgh, PA, United States
| | - Ying Wang
- Department of Medicine, University of Miami School of Medicine, Miami, FL, United States
| | - Timothy B Oriss
- Department of Medicine, University of Pittsburgh School of Medicine, Pittsburgh, PA, United States
| | - Nicholas A Young
- Department of Medicine, Ohio State University School of Medicine, Columbus, OH, United States
| | - Robert A Lafyatis
- Department of Medicine, University of Pittsburgh School of Medicine, Pittsburgh, PA, United States
| | - Wael N Jarjour
- Department of Medicine, Ohio State University School of Medicine, Columbus, OH, United States
| | - Paula R Clemens
- Department of Neurology, University of Pittsburgh School of Medicine, Pittsburgh, PA, United States
| | - Dana P Ascherman
- Department of Medicine, University of Pittsburgh School of Medicine, Pittsburgh, PA, United States
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Henning F, Kohn TA. Preservation of shortening velocity and power output in single muscle fibres from patients with idiopathic inflammatory myopathies. J Muscle Res Cell Motil 2022; 44:1-10. [PMID: 36517707 DOI: 10.1007/s10974-022-09638-w] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2022] [Accepted: 12/05/2022] [Indexed: 12/23/2022]
Abstract
Idiopathic inflammatory myopathies (IIMs) are autoimmune disorders of skeletal muscle causing weakness and disability. Utilizing single fibre contractility studies, we have previously shown that contractility is affected in muscle fibres from individuals with IIMs. For the current study, we hypothesized that a compensatory increase in shortening velocity occurs in muscle fibres from individuals with IIMs in an effort to maintain power output. We performed in vitro single fibre contractility studies to assess force-velocity relationships and maximum shortening velocity (Vmax) of muscle fibres from individuals with IIMs (25 type I and 58 type IIA) and healthy controls (66 type I and 27 type IIA) and calculated maximum power output (Wmax) for each fibre. We found significantly higher Vmax (mean ± SEM) of fibres from individuals with IIMs, for both type I (1.40 ± 0.31 fibre lengths/s, n = vs. 0.63 ± 0.13 fibre lengths/s; p = 0.0019) and type IIA fibres (2.00 ± 0.17 fibre lengths/s vs 0.77 ± 0.10 fibre lengths/s; p < 0.0001). Furthermore, Wmax (mean ± SEM) was maintained compared to fibres from healthy controls, again for both type I and type IIA fibres (4.10 ± 1.00 kN/m2·fibre lengths/s vs. 2.00 ± 0.16 kN/m2·fibre lengths/s; p = ns and 9.00 ± 0.64 kN/m2·fibre lengths/s vs. 6.00 ± 0.67 kN/m2·fibre lengths/s; p = ns respectively). In addition, type I muscle fibres from individuals with IIMs was able to develop maximum power output at lower relative force. The findings of this study suggest that compensatory responses to maintain power output, including increased maximum shortening velocity and improved efficiency, may occur in muscle of individuals with IIMs. The mechanism underlying this response is unclear, and different hypotheses are discussed.
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Affiliation(s)
- Franclo Henning
- Division of Neurology, Department of Medicine, Faculty of Medicine and Health Sciences, Stellenbosch University, Cape Town, South Africa.
- Department of Human Biology, University of Cape Town, Anzio Road, Observatory, Cape Town, South Africa.
| | - Tertius Abraham Kohn
- Department of Human Biology, University of Cape Town, Anzio Road, Observatory, Cape Town, South Africa
- Department of Medical Bioscience, Faculty of Natural Sciences, University of the Western Cape, Cape Town, South Africa
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Thoma A, Earl KE, Goljanek-Whysall K, Lightfoot AP. Major histocompatibility complex I-induced endoplasmic reticulum stress mediates the secretion of pro-inflammatory muscle-derived cytokines. J Cell Mol Med 2022; 26:6032-6041. [PMID: 36426551 PMCID: PMC9753450 DOI: 10.1111/jcmm.17621] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2022] [Revised: 11/08/2022] [Accepted: 11/11/2022] [Indexed: 11/27/2022] Open
Abstract
Major histocompatibility complex (MHC) I is an important component of intracellular antigen presentation. However, improper expression of MHC I upon the cell surface has been associated with several autoimmune diseases. Myositis is a rare acquired autoimmune disease which targets skeletal muscle, and MHC I overexpression on the surface of muscle fibres and immune cell infiltration are clinical hallmarks. MHC I overexpression may have an important pathogenic role, mediated by the activation of the endoplasmic reticulum (ER) stress response. Given the evidence that muscle is a diverse source of cytokines, we aimed to investigate whether MHC I overexpression can modify the profile of muscle-derived cytokines and what role the ER stress pathway may play. Using C2C12 myoblasts we overexpressed MHC I with a H-2kb vector in the presence or absence of salubrinal an ER stress pathway modifying compound. MHC I overexpression induced ER stress pathway activation and elevated cytokine gene expression. MHC I overexpression caused significant release of cytokines and chemokines, which was attenuated in the presence of salubrinal. Conditioned media from MHC I overexpressing cells induced in vitro T-cell chemotaxis, atrophy of healthy myotubes and modified mitochondrial function, features which were attenuated in the presence of salubrinal. Collectively, these data suggest that MHC I overexpression can induce pro-inflammatory cytokine/chemokine release from C2C12 myoblasts, a process which appears to be mediated in-part by the ER stress pathway.
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Affiliation(s)
- Anastasia Thoma
- Musculoskeletal Science & Sports Medicine Research Centre, Department of Life Sciences, Faculty of Science & Engineering, Manchester Metropolitan University, Manchester, UK.,Sheffield Institute for Translational Neuroscience, University of Sheffield, Sheffield, UK
| | - Kate E Earl
- School of Life and Medical Sciences, University of Hertfordshire, Hertfordshire, UK
| | - Katarzyna Goljanek-Whysall
- Institute for Life Course and Medical Sciences, University of Liverpool, Liverpool, UK.,Discipline of Physiology, School of Medicine, National University of Ireland, Galway, Ireland
| | - Adam P Lightfoot
- School of Pharmacy and Biomolecular Sciences, Liverpool John Moores University, Liverpool, UK
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Wilkinson M, Cash K, Gutschmidt B, Otto S, Limaye V. Secondary myoadenylate deaminase deficiency is not a common feature of inflammatory myopathies: A descriptive study. Front Med (Lausanne) 2022; 9:1061722. [PMID: 36507531 PMCID: PMC9727292 DOI: 10.3389/fmed.2022.1061722] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2022] [Accepted: 11/08/2022] [Indexed: 11/24/2022] Open
Abstract
Background Myoadenylate deaminase (MAD) deficiency is a form of metabolic myopathy, which generally causes only mild symptoms in the primary inherited form. Inflammatory myopathies are a group of autoimmune diseases which result in skeletal muscle weakness. In addition to inflammatory pathology, it has been speculated that non-inflammatory mechanisms, and possibly secondary MAD-deficiency, may potentially contribute to weakness in these conditions. Methods We investigated for an association between these two myopathic processes through two complementary methods. Firstly, muscle biopsy records in South Australia over a 17-year period were retrospectively reviewed for diagnosis of myositis or MAD-deficiency, as well as associated clinical features. Secondly, a prospective arm histochemically tested all incident biopsy specimens over a 12-month period for MAD-deficiency. Results In the retrospective arm, 30 MAD-deficient cases were identified (1.3% of all biopsies), with no significant difference observed in overall rates of myositis diagnosis between patients with intact and deficient MAD activity (21.3% vs 26.7%, P = 0.47). No cases of MAD-deficiency were detected in the prospective arm, despite 39 cases of myositis being identified over this period. Conclusion Secondary MAD deficiency is unlikely to be a major driver of symptoms in inflammatory myopathies.
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Affiliation(s)
- Michael Wilkinson
- Faculty of Health and Medical Sciences, University of Adelaide, Adelaide, SA, Australia,Department of Rheumatology, Flinders Medical Centre, Adelaide, SA, Australia,Department of Rheumatology, Royal Adelaide Hospital, Adelaide, SA, Australia,*Correspondence: Michael Wilkinson,
| | - Kathy Cash
- Muscle and Nerve Laboratory, Department of Anatomical Pathology, SA Pathology, Adelaide, SA, Australia
| | - Bernice Gutschmidt
- Muscle and Nerve Laboratory, Department of Anatomical Pathology, SA Pathology, Adelaide, SA, Australia
| | - Sophia Otto
- Faculty of Health and Medical Sciences, University of Adelaide, Adelaide, SA, Australia,Muscle and Nerve Laboratory, Department of Anatomical Pathology, SA Pathology, Adelaide, SA, Australia
| | - Vidya Limaye
- Faculty of Health and Medical Sciences, University of Adelaide, Adelaide, SA, Australia,Department of Rheumatology, Royal Adelaide Hospital, Adelaide, SA, Australia
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Abioja M, Logunleko M, Majekodunmi B, Adekunle E, Shittu O, Odeyemi A, Nwosu E, Oke O, Iyasere O, Abiona J, Williams T, James I, Smith O, Daramola J. Roles of Candidate Genes in the Adaptation of Goats to Heat Stress: A Review. Small Rumin Res 2022. [DOI: 10.1016/j.smallrumres.2022.106878] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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10
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Yamada T, Ashida Y, Tamai K, Kimura I, Yamauchi N, Naito A, Tokuda N, Westerblad H, Andersson DC, Himori K. Improved skeletal muscle fatigue resistance in experimental autoimmune myositis mice following high-intensity interval training. Arthritis Res Ther 2022; 24:156. [PMID: 35761371 PMCID: PMC9235155 DOI: 10.1186/s13075-022-02846-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2022] [Accepted: 06/18/2022] [Indexed: 12/03/2022] Open
Abstract
Background Muscle weakness and decreased fatigue resistance are key manifestations of systemic autoimmune myopathies (SAMs). We here examined whether high-intensity interval training (HIIT) improves fatigue resistance in the skeletal muscle of experimental autoimmune myositis (EAM) mice, a widely used animal model for SAM. Methods Female BALB/c mice were randomly assigned to control (CNT) or EAM groups (n = 28 in each group). EAM was induced by immunization with three injections of myosin emulsified in complete Freund’s adjuvant. The plantar flexor (PF) muscles of mice with EAM were exposed to either an acute bout or 4 weeks of HIIT (a total of 14 sessions). Results The fatigue resistance of PF muscles was lower in the EAM than in the CNT group (P < 0.05). These changes were associated with decreased activities of citrate synthase and cytochrome c oxidase and increased expression levels of the endoplasmic reticulum stress proteins (glucose-regulated protein 78 and 94, and PKR-like ER kinase) (P < 0.05). HIIT restored all these alterations and increased the peroxisome proliferator-activated receptor γ coactivator-1α (PGC-1α) and the mitochondrial electron transport chain complexes (I, III, and IV) in the muscles of EAM mice (P < 0.05). Conclusions HIIT improves fatigue resistance in a SAM mouse model, and this can be explained by the restoration of mitochondria oxidative capacity via inhibition of the ER stress pathway and PGC-1α-mediated mitochondrial biogenesis.
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Liu D, Xiao Y, Zhou B, Gao S, Li L, Zhao L, Chen W, Dai B, Li Q, Duan H, Zuo X, Luo H, Zhu H. PKM2-dependent glycolysis promotes skeletal muscle cell pyroptosis by activating the NLRP3 inflammasome in dermatomyositis/polymyositis. Rheumatology (Oxford) 2021; 60:2177-2189. [PMID: 33165604 DOI: 10.1093/rheumatology/keaa473] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2019] [Revised: 05/19/2020] [Indexed: 12/25/2022] Open
Abstract
OBJECTIVES Muscle cell necrosis is the most common pathological manifestation of idiopathic inflammatory myopathies. Evidence suggests that glycolysis might participate in it. However, the mechanism is unclear. This study aimed to determine the role of glycolysis in the muscle damage that occurs in DM/PM. METHODS Mass spectrometry was performed on muscle lesions from DM/PM and control subjects. The expression levels of pyruvate kinase isozyme M2 (PKM2), the nucleotide-binding and oligomerization domain-like receptor family pyrin domain containing 3 (NLRP3) inflammasome and pyroptosis-related genes in muscle tissues or plasma were determined by real-time PCR, western blot analysis, IF and ELISA. In addition, IFNγ was used to stimulate myotubes, and the relationships among PMK2 expression, NLRP3 inflammasome activation and pyroptosis were investigated. RESULTS Mass spectrometry and bioinformatics analysis suggested that multiple glycolysis processes, the NLRP3 inflammasome and programmed cell death pathway-related proteins were dysregulated in the muscle tissues of DM/PM. PKM2 and the NLRP3 inflammasome were upregulated and positively correlated in the muscle fibres of DM/PM. Moreover, the pyroptosis-related proteins were increased in muscle tissues of DM/PM and were further increased in PM. The levels of PKM2 in muscle tissues and IL-1β in plasma were high in patients with anti-signal recognition particle autoantibody expression. The pharmacological inhibition of PKM2 in IFNγ-stimulated myotubes attenuated NLRP3 inflammasome activation and subsequently inhibited pyroptosis. CONCLUSION Our study revealed upregulated glycolysis in the lesioned muscle tissues of DM/PM, which activated the NLRP3 inflammasome and leaded to pyroptosis in muscle cells. The levels of PKM2 and IL-1β were high in patients with anti-signal recognition particle autoantibody expression. These proteins might be used as new biomarkers for muscle damage.
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Affiliation(s)
- Di Liu
- Department of Rheumatology and Immunology, Xiangya Hospital
- Institute of Rheumatology and Immunology, Central South University, Changsha
| | - Yizhi Xiao
- Department of Rheumatology and Immunology, Xiangya Hospital
- Institute of Rheumatology and Immunology, Central South University, Changsha
| | - Bin Zhou
- Department of Nephrology, The Affiliated Hospital of Qingdao University, Qingdao
| | - Siming Gao
- Department of Rheumatology and Immunology, Beijing Jishuitan Hospital, Beijing
| | - Liya Li
- Department of Rheumatology and Immunology, Xiangya Hospital
- Institute of Rheumatology and Immunology, Central South University, Changsha
| | - Lijuan Zhao
- Department of Rheumatology and Immunology, Xiangya Hospital
- Institute of Rheumatology and Immunology, Central South University, Changsha
| | - Weilin Chen
- Department of Rheumatology and Immunology, Xiangya Hospital
- Institute of Rheumatology and Immunology, Central South University, Changsha
| | - Bingying Dai
- Department of Rheumatology and Immunology, Xiangya Hospital
- Institute of Rheumatology and Immunology, Central South University, Changsha
| | - Qiuxiang Li
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, China
| | - Huiqian Duan
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, China
| | - Xiaoxia Zuo
- Department of Rheumatology and Immunology, Xiangya Hospital
- Institute of Rheumatology and Immunology, Central South University, Changsha
| | - Hui Luo
- Department of Rheumatology and Immunology, Xiangya Hospital
- Institute of Rheumatology and Immunology, Central South University, Changsha
| | - Honglin Zhu
- Department of Rheumatology and Immunology, Xiangya Hospital
- Institute of Rheumatology and Immunology, Central South University, Changsha
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Coskun Benlidayi I, Gupta L. The pathophysiological effects of exercise in the management of idiopathic inflammatory myopathies: A scoping review. Int J Rheum Dis 2021; 24:896-903. [PMID: 33793075 DOI: 10.1111/1756-185x.14104] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2020] [Revised: 03/01/2021] [Accepted: 03/02/2021] [Indexed: 11/30/2022]
Abstract
Idiopathic inflammatory myopathy (IIM) is a term used for a heterogeneous group of diseases characterized by severe muscle weakness. In addition to pharmacological treatment options, non-pharmacological methods such as exercising are essential for proper management of myositis. The present article aimed to provide an insight into the potential pathophysiological mechanisms underlying exercise-related benefits in myositis. A systematic search was performed on PubMed/MEDLINE, Scopus, Web of Science, and Google Scholar using the following keywords and their combinations: "idiopathic inflammatory myopathy", "inflammatory myopathy", "myositis", "polymyositis", "dermatomyositis", "inclusion body myositis", and "exercise". Current literature indicates that exercising has impact on both immune and non-immune pathways in patients with IIM. Exercise-related benefits include (a) increased mitochondrial biogenesis/enzyme activity, (b) reconditioning of immune/inflammatory pathways, (c) decreased endoplasmic reticulum stress, (d) modulation of gene expression, (e) increased protein synthesis and cytoskeletal remodeling, and (f) decreased muscle fibrosis and non-muscle area infiltrates. With its certain benefits, exercise stands as a precious non-pharmacological treatment option for patients with IIM.
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Affiliation(s)
- Ilke Coskun Benlidayi
- Department of Physical Medicine and Rehabilitation, Cukurova University Faculty of Medicine, Adana, Turkey
| | - Latika Gupta
- Department of Clinical Immunology and Rheumatology, Sanjay Gandhi Postgraduate Institute of Medical Sciences, Lucknow, India
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Kerschan-Schindl K, Gruther W, Föger-Samwald U, Bangert C, Kudlacek S, Pietschmann P. Myostatin and markers of bone metabolism in dermatomyositis. BMC Musculoskelet Disord 2021; 22:150. [PMID: 33546660 PMCID: PMC7866468 DOI: 10.1186/s12891-021-04030-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/17/2020] [Accepted: 01/28/2021] [Indexed: 01/11/2023] Open
Abstract
Background In dermatomyostis (DM) patients, inflammation, reduced activity, and medication have a negative impact on the musculoskeletal system. Several endocrine factors are involved in muscle growth and bone turnover. Objective: We aimed to investigate factors regulating myogenesis and bone metabolism and to evaluate possible associations between these endocrine factors, muscle strength, and functional tests in DM patients. Methods We conducted a cross-sectional study in 20 dermatomyositis patients. Serum levels of myostatin (MSTN), follistatin (FSTN), dickkopf 1 (Dkk1), sclerostin (SOST), periostin (PSTN), the receptor activator nuclear factor kB ligand (RANKL):osteoprotegerin (OPG) ratio and fibroblast growth factor 23 (FGF23) were determined. Physical function was evaluated by hand-held strength measurement, chair rising test, timed up and go test and the 3-min walking test. Results Serum MSTN and FGF23 levels (2.5 [1.9; 3.2] vs. 1.9 [1.6; 2.3] and 2.17 [1.45; 3.26] vs. 1.28 [0.79; 1.96], respectively; p < 0.05) were significantly higher in DM patients than in controls. Dkk1 was significantly lower (11.4 [6.9; 20.0] vs. 31.8 [14.3; 50.6], p < 0.01). Muscle strength and physical function tests correlated with each other (e.g. hip flexion – timed up and go test: r = − 0.748, p < 0.01). Conclusion In DM patients, biochemical musculo-skeletal markers are altered and physical function shows deficits. All these tests reflect independent of each other different deficits in long-term DM patients which is important for the assessment of DM patients as well as planning of therapeutic interventions in clinical routine.
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Affiliation(s)
- Katharina Kerschan-Schindl
- Department of Physical Medicine and Rehabilitation and Occupational, Medical University of Vienna, Waehringer Guertel 18-20, 1090, Vienna, Austria.
| | - Wolfgang Gruther
- Department of Physical Medicine and Rehabilitation and Occupational, Medical University of Vienna, Waehringer Guertel 18-20, 1090, Vienna, Austria.,healthPi - Medical Center, Vienna, Austria
| | - Ursula Föger-Samwald
- Department of Pathophysiology and Allergy Research, Center of Pathophysiology, Infectiology and Immunology, Medical University of Vienna, Vienna, Austria
| | - Christine Bangert
- Department of Dermatology, Medical University of Vienna, Vienna, Austria
| | - Stefan Kudlacek
- Medizinische Abteilung, Krankenhaus Barmherzige Brüder, Vienna, Austria
| | - Peter Pietschmann
- Department of Pathophysiology and Allergy Research, Center of Pathophysiology, Infectiology and Immunology, Medical University of Vienna, Vienna, Austria
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Himori K, Ashida Y, Tatebayashi D, Abe M, Saito Y, Chikenji T, Westerblad H, Andersson DC, Yamada T. Eccentric Resistance Training Ameliorates Muscle Weakness in a Mouse Model of Idiopathic Inflammatory Myopathies. Arthritis Rheumatol 2020; 73:848-857. [PMID: 33191613 DOI: 10.1002/art.41594] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2020] [Accepted: 11/10/2020] [Indexed: 01/19/2023]
Abstract
OBJECTIVE High-force eccentric contractions (ECCs) have traditionally been excluded from rehabilitation programs that include patients with idiopathic inflammatory myopathies (IIMs) due to unverified fear of causing muscle damage and inflammation. In an IIM animal model that used mice with experimental autoimmune myositis (EAM), we undertook this study to investigate whether ECC training can safely and effectively be used to counteract muscle weakness in IIM. METHODS EAM was induced in BALB/c mice by immunization with 3 injections of myosin emulsified in Freund's complete adjuvant. Controls (n = 12) and mice with EAM (n = 12) were exposed to either an acute bout of 100 ECCs or 4 weeks of ECC training (20 ECCs every other day). To induce ECCs, plantar flexor muscles were electrically stimulated while the ankle was forcibly dorsiflexed. RESULTS Less cell damage, as assessed by Evans blue dye uptake, was observed in the muscles of mice with EAM, compared to controls, after an acute bout of 100 ECCs (P < 0.05). Maximum Ca2+ -activated force was decreased in skinned gastrocnemius muscle fibers from mice with EAM, and this was accompanied by increased expression of endoplasmic reticulum (ER) stress proteins, including Gsp78 and Gsp94 (P < 0.05). ECC training prevented the decrease in force and the increase in ER stress proteins and also enhanced the expression and myofibrillar binding of small heat-shock proteins (HSPs) (P < 0.05), which can stabilize myofibrillar structure and function. CONCLUSION ECC training protected against the reduction in myofibrillar force-generating capacity in an IIM mouse model, and this occurred via inhibition of ER stress responses and small HSP-mediated myofibrillar stabilization.
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Affiliation(s)
- Koichi Himori
- Sapporo Medical University, Sapporo, Japan, and the Japan Society for the Promotion of Science, Tokyo, Japan
| | - Yuki Ashida
- Sapporo Medical University, Sapporo, Japan, and the Japan Society for the Promotion of Science, Tokyo, Japan
| | | | - Masami Abe
- Sapporo Medical University, Sapporo, Japan
| | - Yuki Saito
- Sapporo Medical University, Sapporo, Japan
| | - Takako Chikenji
- Sapporo Medical University and Hokkaido University, Sapporo, Japan
| | | | - Daniel C Andersson
- Karolinska Institutet, Stockholm, Sweden, and Karolinska University Hospital, Solna, Sweden
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Role of Myokines in Myositis Pathogenesis and Their Potential to be New Therapeutic Targets in Idiopathic Inflammatory Myopathies. J Immunol Res 2020; 2020:9079083. [PMID: 32775472 PMCID: PMC7396002 DOI: 10.1155/2020/9079083] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2020] [Revised: 06/10/2020] [Accepted: 07/04/2020] [Indexed: 12/16/2022] Open
Abstract
Idiopathic inflammatory myopathies (IIM) represent a heterogeneous group of autoimmune diseases whose treatment is often a challenge. Many patients, even after immunosuppressive therapy, do not respond to treatment, so new alternatives have been sought for this. Therefore, other signaling pathways that could contribute to the pathogenesis of myositis have been investigated, such as the expression of myokines in skeletal muscle in response to the inflammatory process. In this review, we will refer to these muscle cytokines that are overexpressed or downregulated in skeletal muscle in patients with various forms of IIM, thus being able to contribute to the maintenance of the autoimmune process. Some muscle cytokines, through their antagonistic action, may be a helpful contributor to the disease modulation, and thus, they could represent personalized treatment targets. Here, we consider the main myokines involved in the pathogenesis of myositis, expressing our view on the possibility of using them as potential therapeutic targets: interleukins IL-6, IL-15, and IL-18; chemokines CXCL10, CCL2, CCL3, CCL4, CCL5, and CCL20; myostatin; follistatin; decorin; osteonectin; and insulin-like 6. An interesting topic regarding the complex connection between myokines and noninflammatory pathways implied in IIM has also been briefly described, because it is an important scientific approach to the pathogenesis of IIM and can be a therapeutic alternative to be considered, especially for the patients who do not respond to immunosuppressive treatment.
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16
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Liu D, Zuo X, Luo H, Zhu H. The altered metabolism profile in pathogenesis of idiopathic inflammatory myopathies. Semin Arthritis Rheum 2020; 50:627-635. [PMID: 32502727 DOI: 10.1016/j.semarthrit.2020.05.008] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2020] [Revised: 04/28/2020] [Accepted: 05/11/2020] [Indexed: 11/29/2022]
Abstract
Idiopathic inflammatory myopathies (IIMs) are a group of heterogeneous autoimmune diseases characterized by muscle weakness, muscle inflammation and extramuscular manifestations. Despite extensive efforts, the mechanisms of IIMs remain largely unknown, and treatment is still a challenge for physicians. Metabolism changes have emerged as a crucial player in autoimmune diseases, such as systemic lupus erythematosus (SLE) and rheumatoid arthritis (RA). However, little is known about metabolism changes in IIMs. In this review, we focus on the alteration of metabolism profile in IIMs, and the relationships with clinical information. We highlight the potential roles of metabolism in the pathogenesis of IIMs and discuss future perspectives for metabolic checkpoint-based therapeutic interventions.
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Affiliation(s)
- Di Liu
- Department of Rheumatology, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha, Hunan 410008, People's Republic of China
| | - Xiaoxia Zuo
- Department of Rheumatology, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha, Hunan 410008, People's Republic of China
| | - Hui Luo
- Department of Rheumatology, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha, Hunan 410008, People's Republic of China
| | - Honglin Zhu
- Department of Rheumatology, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha, Hunan 410008, People's Republic of China.
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Henning F, Kohn TA. An exploratory study of contractile force production in muscle fibers from patients with inflammatory myopathies. Muscle Nerve 2020; 62:284-288. [PMID: 32367547 DOI: 10.1002/mus.26904] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2019] [Revised: 03/15/2020] [Accepted: 04/22/2020] [Indexed: 11/06/2022]
Abstract
INTRODUCTION The mechanism by which weakness develops in idiopathic inflammatory myopathies (IIMs) is still unclear. In this study we investigated the maximum force of single muscle fibers from patients with IIMs. METHODS Permeabilized single muscle fibers from patients with IIMs and healthy controls were subjected to contractility measurements. Maximum force and specific force production (maximum force normalized to fiber size) and fiber type were determined for each isolated fiber. RESULTS A total of 178 fibers were studied from five patients with IIMs and 95 fibers from four controls. Specific force production was significantly lower in the IIM group for all fiber types. DISCUSSION The findings from this exploratory study suggest that weakness in IIMs may, in part, be caused by dysfunction of the contractile apparatus. These findings provide a basis for further studies into the mechanisms underlying weakness in IIMs.
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Affiliation(s)
- Franclo Henning
- Division of Neurology, Department of Medicine, Faculty of Medicine and Health Sciences, Stellenbosch University, Cape Town,, South Africa.,Division of Exercise Science and Sports Medicine, Department of Human Biology, University of Cape Town, Newlands, South Africa
| | - Tertius Abraham Kohn
- Division of Exercise Science and Sports Medicine, Department of Human Biology, University of Cape Town, Newlands, South Africa.,Department of Medical Bioscience, Faculty of Natural Sciences, University of the Western Cape, Cape Town, South Africa
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Mukund K, Subramaniam S. Skeletal muscle: A review of molecular structure and function, in health and disease. WILEY INTERDISCIPLINARY REVIEWS. SYSTEMS BIOLOGY AND MEDICINE 2020; 12:e1462. [PMID: 31407867 PMCID: PMC6916202 DOI: 10.1002/wsbm.1462] [Citation(s) in RCA: 216] [Impact Index Per Article: 54.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/15/2019] [Revised: 07/03/2019] [Accepted: 07/03/2019] [Indexed: 12/11/2022]
Abstract
Decades of research in skeletal muscle physiology have provided multiscale insights into the structural and functional complexity of this important anatomical tissue, designed to accomplish the task of generating contraction, force and movement. Skeletal muscle can be viewed as a biomechanical device with various interacting components including the autonomic nerves for impulse transmission, vasculature for efficient oxygenation, and embedded regulatory and metabolic machinery for maintaining cellular homeostasis. The "omics" revolution has propelled a new era in muscle research, allowing us to discern minute details of molecular cross-talk required for effective coordination between the myriad interacting components for efficient muscle function. The objective of this review is to provide a systems-level, comprehensive mapping the molecular mechanisms underlying skeletal muscle structure and function, in health and disease. We begin this review with a focus on molecular mechanisms underlying muscle tissue development (myogenesis), with an emphasis on satellite cells and muscle regeneration. We next review the molecular structure and mechanisms underlying the many structural components of the muscle: neuromuscular junction, sarcomere, cytoskeleton, extracellular matrix, and vasculature surrounding muscle. We highlight aberrant molecular mechanisms and their possible clinical or pathophysiological relevance. We particularly emphasize the impact of environmental stressors (inflammation and oxidative stress) in contributing to muscle pathophysiology including atrophy, hypertrophy, and fibrosis. This article is categorized under: Physiology > Mammalian Physiology in Health and Disease Developmental Biology > Developmental Processes in Health and Disease Models of Systems Properties and Processes > Cellular Models.
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Affiliation(s)
- Kavitha Mukund
- Department of BioengineeringUniversity of CaliforniaSan DiegoCalifornia
| | - Shankar Subramaniam
- Department of Bioengineering, Bioinformatics & Systems BiologyUniversity of CaliforniaSan DiegoCalifornia
- Department of Computer Science and EngineeringUniversity of CaliforniaSan DiegoCalifornia
- Department of Cellular and Molecular Medicine and NanoengineeringUniversity of CaliforniaSan DiegoCalifornia
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Gupta L, Ahmed S, Jain A, Misra R. Emerging role of metabolomics in rheumatology. Int J Rheum Dis 2018; 21:1468-1477. [PMID: 30146741 DOI: 10.1111/1756-185x.13353] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2018] [Revised: 05/21/2018] [Accepted: 06/19/2018] [Indexed: 12/19/2022]
Abstract
The pursuit for understanding disease pathogenesis, in this age of rapid laboratory diagnostics and fast-paced research, has led scientists worldwide to take recourse in hypothesis-free approaches for molecular diagnosis. Metabolomics is one such powerful tool that explores comprehensibly the metabolic alternations in human diseases. It involves study of small molecules of less than 1 kD in size by either LSMS or nuclear magnetic resonance. Unlike genomics, which tells us what may have happened, metabolomics reflects what did happen. The NMR technique has an advantage of analyzing metabolites without sample preparation, thereby diminishing artifacts, is less cumbersome and with the latest database on Metabolome; about 30 000 metabolites can be identified. The study of metabolomics for several rheumatic diseases, including rheumatoid arthritis, lupus, osteoarthritis and vasculitis, has revealed distinctive metabolic signatures. Thus, metabolomics is a technique that promises precision medicine with better biomarkers, robust predictors of drug response and of disease outcome, discovery of newer metabolites and pathways in disease pathogenesis, and finally, targeted drug development. This review intends to decipher its relevance in common rheumatic diseases.
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Affiliation(s)
- Latika Gupta
- Department of Clinical Immunology and Rheumatology, Sanjay Gandhi Postgraduate Institute of Medical Sciences, Lucknow, India
| | - Sakir Ahmed
- Department of Clinical Immunology and Rheumatology, Sanjay Gandhi Postgraduate Institute of Medical Sciences, Lucknow, India
| | - Avinash Jain
- Department of Clinical Immunology and Rheumatology, Sanjay Gandhi Postgraduate Institute of Medical Sciences, Lucknow, India
| | - Ramnath Misra
- Department of Clinical Immunology and Rheumatology, Sanjay Gandhi Postgraduate Institute of Medical Sciences, Lucknow, India
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Bertolini F, Servin B, Talenti A, Rochat E, Kim ES, Oget C, Palhière I, Crisà A, Catillo G, Steri R, Amills M, Colli L, Marras G, Milanesi M, Nicolazzi E, Rosen BD, Van Tassell CP, Guldbrandtsen B, Sonstegard TS, Tosser-Klopp G, Stella A, Rothschild MF, Joost S, Crepaldi P. Signatures of selection and environmental adaptation across the goat genome post-domestication. Genet Sel Evol 2018; 50:57. [PMID: 30449276 PMCID: PMC6240954 DOI: 10.1186/s12711-018-0421-y] [Citation(s) in RCA: 91] [Impact Index Per Article: 15.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2017] [Accepted: 10/15/2018] [Indexed: 01/03/2023] Open
Abstract
BACKGROUND Since goat was domesticated 10,000 years ago, many factors have contributed to the differentiation of goat breeds and these are classified mainly into two types: (i) adaptation to different breeding systems and/or purposes and (ii) adaptation to different environments. As a result, approximately 600 goat breeds have developed worldwide; they differ considerably from one another in terms of phenotypic characteristics and are adapted to a wide range of climatic conditions. In this work, we analyzed the AdaptMap goat dataset, which is composed of data from more than 3000 animals collected worldwide and genotyped with the CaprineSNP50 BeadChip. These animals were partitioned into groups based on geographical area, production uses, available records on solid coat color and environmental variables including the sampling geographical coordinates, to investigate the role of natural and/or artificial selection in shaping the genome of goat breeds. RESULTS Several signatures of selection on different chromosomal regions were detected across the different breeds, sub-geographical clusters, phenotypic and climatic groups. These regions contain genes that are involved in important biological processes, such as milk-, meat- or fiber-related production, coat color, glucose pathway, oxidative stress response, size, and circadian clock differences. Our results confirm previous findings in other species on adaptation to extreme environments and human purposes and provide new genes that could explain some of the differences between goat breeds according to their geographical distribution and adaptation to different environments. CONCLUSIONS These analyses of signatures of selection provide a comprehensive first picture of the global domestication process and adaptation of goat breeds and highlight possible genes that may have contributed to the differentiation of this species worldwide.
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Affiliation(s)
- Francesca Bertolini
- Department of Animal Science, Iowa State University, Ames, IA 50011 USA
- National Institute of Aquatic Resources, Technical University of Denmark (DTU), 2800 Lyngby, Denmark
| | - Bertrand Servin
- GenPhySE, INRA, Université de Toulouse, INPT, ENVT, 31326 Castanet Tolosan, France
| | - Andrea Talenti
- Dipartimento di Medicina Veterinaria, Università degli Studi di Milano, 20133 Milan, Italy
| | - Estelle Rochat
- Laboratory of Geographic Information Systems (LASIG), School of Architecture, Civil and Environmental Engineering (ENAC), Ecole Polytechnique Fédérale de Lausanne (EPFL), 1015 Lausanne, Switzerland
| | | | - Claire Oget
- GenPhySE, INRA, Université de Toulouse, INPT, ENVT, 31326 Castanet Tolosan, France
| | - Isabelle Palhière
- GenPhySE, INRA, Université de Toulouse, INPT, ENVT, 31326 Castanet Tolosan, France
| | - Alessandra Crisà
- Consiglio per la ricerca in agricoltura e l’analisi dell’economia agraria (CREA) - Research Centre for Animal Production and Acquaculture, 00015 Monterotondo, Roma, Italy
| | - Gennaro Catillo
- Consiglio per la ricerca in agricoltura e l’analisi dell’economia agraria (CREA) - Research Centre for Animal Production and Acquaculture, 00015 Monterotondo, Roma, Italy
| | - Roberto Steri
- Consiglio per la ricerca in agricoltura e l’analisi dell’economia agraria (CREA) - Research Centre for Animal Production and Acquaculture, 00015 Monterotondo, Roma, Italy
| | - Marcel Amills
- Centre for Research in Agricultural Genomics (CRAG), CSIC-IRTA-UAB-UB, Campus Universitat Autonoma de Barcelona, Bellaterra, 08193 Barcelona, Spain
| | - Licia Colli
- DIANA Dipartimento di Scienze Animali, della Nutrizione e degli Alimenti, Università Cattolica del S. Cuore, 29100 Piacenza, Italy
- BioDNA Centro di Ricerca sulla Biodiversità e sul DNA Antico, Università Cattolica del S. Cuore, 29100 Piacenza, Italy
| | - Gabriele Marras
- Fondazione Parco Tecnologico Padano (PTP), 26900 Lodi, Italy
| | - Marco Milanesi
- DIANA Dipartimento di Scienze Animali, della Nutrizione e degli Alimenti, Università Cattolica del S. Cuore, 29100 Piacenza, Italy
- Department of Support, Production and Animal Health, School of Veterinary Medicine, São Paulo State University (UNESP), Araçatuba, Brazil
| | | | - Benjamin D. Rosen
- Animal Genomics and Improvement Laboratory, ARS USDA, Beltsville, MD 20705 USA
| | | | - Bernt Guldbrandtsen
- Center for Quantitative Genetics and Genomics, Aarhus University, 8830 Tjele, Denmark
| | | | - Gwenola Tosser-Klopp
- GenPhySE, INRA, Université de Toulouse, INPT, ENVT, 31326 Castanet Tolosan, France
| | - Alessandra Stella
- BioDNA Centro di Ricerca sulla Biodiversità e sul DNA Antico, Università Cattolica del S. Cuore, 29100 Piacenza, Italy
| | - Max F. Rothschild
- Department of Animal Science, Iowa State University, Ames, IA 50011 USA
| | - Stéphane Joost
- Laboratory of Geographic Information Systems (LASIG), School of Architecture, Civil and Environmental Engineering (ENAC), Ecole Polytechnique Fédérale de Lausanne (EPFL), 1015 Lausanne, Switzerland
| | - Paola Crepaldi
- Dipartimento di Medicina Veterinaria, Università degli Studi di Milano, 20133 Milan, Italy
| | - the AdaptMap consortium
- Department of Animal Science, Iowa State University, Ames, IA 50011 USA
- National Institute of Aquatic Resources, Technical University of Denmark (DTU), 2800 Lyngby, Denmark
- GenPhySE, INRA, Université de Toulouse, INPT, ENVT, 31326 Castanet Tolosan, France
- Dipartimento di Medicina Veterinaria, Università degli Studi di Milano, 20133 Milan, Italy
- Laboratory of Geographic Information Systems (LASIG), School of Architecture, Civil and Environmental Engineering (ENAC), Ecole Polytechnique Fédérale de Lausanne (EPFL), 1015 Lausanne, Switzerland
- Recombinetics Inc, St Paul, 55104 MN USA
- Consiglio per la ricerca in agricoltura e l’analisi dell’economia agraria (CREA) - Research Centre for Animal Production and Acquaculture, 00015 Monterotondo, Roma, Italy
- Centre for Research in Agricultural Genomics (CRAG), CSIC-IRTA-UAB-UB, Campus Universitat Autonoma de Barcelona, Bellaterra, 08193 Barcelona, Spain
- DIANA Dipartimento di Scienze Animali, della Nutrizione e degli Alimenti, Università Cattolica del S. Cuore, 29100 Piacenza, Italy
- BioDNA Centro di Ricerca sulla Biodiversità e sul DNA Antico, Università Cattolica del S. Cuore, 29100 Piacenza, Italy
- Fondazione Parco Tecnologico Padano (PTP), 26900 Lodi, Italy
- Department of Support, Production and Animal Health, School of Veterinary Medicine, São Paulo State University (UNESP), Araçatuba, Brazil
- Animal Genomics and Improvement Laboratory, ARS USDA, Beltsville, MD 20705 USA
- Center for Quantitative Genetics and Genomics, Aarhus University, 8830 Tjele, Denmark
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Lightfoot AP, Cooper RG. Editorial: Endurance Exercise: An Important Therapeutic Adjuvant in the Overall Treatment of Myositis? Arthritis Rheumatol 2018; 68:1578-81. [PMID: 26866277 DOI: 10.1002/art.39615] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2016] [Accepted: 01/26/2016] [Indexed: 11/06/2022]
Affiliation(s)
- Adam P Lightfoot
- MRC Arthritis Research UK Centre for Integrated Research into Musculoskeletal Ageing, University of Liverpool, Liverpool, UK
| | - Robert G Cooper
- MRC Arthritis Research UK Centre for Integrated Research into Musculoskeletal Ageing, University of Liverpool, Liverpool, UK
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22
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Abstract
Histopathological analyses of muscle specimens from myositis patients indicate that skeletal muscle cells play an active role in the interaction with immune cells. Research over the last few decades has shown that skeletal muscle cells exhibit immunobiological properties that perfectly define them as non-professional antigen presenting cells. They are able to present antigens via major histocompatibility complex molecules, exhibit costimulatory molecules and secrete soluble molecules that actively shape the immune response in an either pro- or anti-inflammatory manner. Skeletal muscle cells regulate both innate and adaptive immune responses and are essentially involved in the pathophysiological processes of idiopathic inflammatory myopathies. Understanding the role of skeletal muscle cells might help to identify new therapeutic targets for these devastating diseases. This review summarizes the immunobiological features of skeletal muscle cells, especially in the context of idiopathic inflammatory myopathies, and discusses shortcomings and limitations in skeletal muscle related research providing potential perspectives to overcome them in the future.
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Affiliation(s)
- Ali Maisam Afzali
- Department of Neurology, Klinikum Rechts der Isar, Technical University of Munich, Germany; Department of Neurology, University of Münster, Germany
| | | | - Heinz Wiendl
- Department of Neurology, University of Münster, Germany
| | - Sven G Meuth
- Department of Neurology, University of Münster, Germany
| | - Tobias Ruck
- Department of Neurology, University of Münster, Germany.
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Mukund K, Subramaniam S. Co-expression Network Approach Reveals Functional Similarities among Diseases Affecting Human Skeletal Muscle. Front Physiol 2017; 8:980. [PMID: 29249983 PMCID: PMC5717538 DOI: 10.3389/fphys.2017.00980] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2017] [Accepted: 11/16/2017] [Indexed: 12/27/2022] Open
Abstract
Diseases affecting skeletal muscle exhibit considerable heterogeneity in intensity, etiology, phenotypic manifestation and gene expression. Systems biology approaches using network theory, allows for a holistic understanding of functional similarities amongst diseases. Here we propose a co-expression based, network theoretic approach to extract functional similarities from 20 heterogeneous diseases comprising of dystrophinopathies, inflammatory myopathies, neuromuscular, and muscle metabolic diseases. Utilizing this framework we identified seven closely associated disease clusters with 20 disease pairs exhibiting significant correlation (p < 0.05). Mapping the diseases onto a human protein-protein interaction network enabled the inference of a common program of regulation underlying more than half the muscle diseases considered here and referred to as the “protein signature.” Enrichment analysis of 17 protein modules identified as part of this signature revealed a statistically non-random dysregulation of muscle bioenergetic pathways and calcium homeostasis. Further, analysis of mechanistic similarities of less explored significant disease associations [such as between amyotrophic lateral sclerosis (ALS) and cerebral palsy (CP)] using a proposed “functional module” framework revealed adaptation of the calcium signaling machinery. Integrating drug-gene information into the quantitative framework highlighted the presence of therapeutic opportunities through drug repurposing for diseases affecting the skeletal muscle.
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Affiliation(s)
- Kavitha Mukund
- Department of Bioengineering, University of California, San Diego, La Jolla, CA, United States
| | - Shankar Subramaniam
- Departments Cellular and Molecular Medicine, Computer Science and Engineering, University of California, San Diego, La Jolla, CA, United States
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24
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Lee KM, Chand KK, Hammond LA, Lavidis NA, Noakes PG. Functional decline at the aging neuromuscular junction is associated with altered laminin-α4 expression. Aging (Albany NY) 2017; 9:880-899. [PMID: 28301326 PMCID: PMC5391237 DOI: 10.18632/aging.101198] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2016] [Accepted: 03/03/2017] [Indexed: 12/04/2022]
Abstract
Laminin-α4 is involved in the alignment of active zones to postjunctional folds at the neuromuscular junction (NMJ). Prior study has implicated laminin-α4 in NMJ maintenance, with altered NMJ morphology observed in adult laminin-α4 deficient mice (lama4−/−). The present study further investigated the role of laminin-α4 in NMJ maintenance by functional characterization of transmission properties, morphological investigation of synaptic proteins including synaptic laminin-α4, and neuromotor behavioral testing. Results showed maintained perturbed transmission properties at lama4−/− NMJs from adult (3 months) through to aged (18-22 months). Hind-limb grip force demonstrated similar trends as transmission properties, with maintained weaker grip force across age groups in lama4−/−. Interestingly, both transmission properties and hind-limb grip force in aged wild-types resembled those observed in adult lama4−/−. Most significantly, altered expression of laminin-α4 was noted at the wild-type NMJs prior to the observed decline in transmission properties, suggesting that altered laminin-α4 expression precedes the decline of neurotransmission in aging wild-types. These findings significantly support the role of laminin-α4 in maintenance of the NMJ during aging.
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Affiliation(s)
- Kah Meng Lee
- School of Biomedical Sciences, The University of Queensland, St. Lucia, Queensland 4072, Australia
| | - Kirat K Chand
- School of Biomedical Sciences, The University of Queensland, St. Lucia, Queensland 4072, Australia.,University of Queensland Centre for Clinical Research, The University of Queensland, Herston, Queensland 4029, Australia
| | - Luke A Hammond
- Queensland Brain Institute, The University of Queensland, St. Lucia, Queensland 4072, Australia
| | - Nickolas A Lavidis
- School of Biomedical Sciences, The University of Queensland, St. Lucia, Queensland 4072, Australia
| | - Peter G Noakes
- School of Biomedical Sciences, The University of Queensland, St. Lucia, Queensland 4072, Australia.,Queensland Brain Institute, The University of Queensland, St. Lucia, Queensland 4072, Australia
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25
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Hamann PD, Roux BT, Heward JA, Love S, McHugh NJ, Jones SW, Lindsay MA. Transcriptional profiling identifies differential expression of long non-coding RNAs in Jo-1 associated and inclusion body myositis. Sci Rep 2017; 7:8024. [PMID: 28808260 PMCID: PMC5556005 DOI: 10.1038/s41598-017-08603-9] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2017] [Accepted: 07/14/2017] [Indexed: 12/22/2022] Open
Abstract
Myositis is characterised by muscle inflammation and weakness. Although generally thought to be driven by a systemic autoimmune response, increasing evidence suggests that intrinsic changes in the muscle might also contribute to the pathogenesis. Long non-coding RNAs (lncRNAs) are a family of novel genes that regulate gene transcription and translation. To determine the potential role of lncRNAs, we employed next generation sequencing to examine the transcriptome in muscle biopsies obtained from two histologically distinct patient populations, inclusion body myositis (IBM) and anti-Jo-1-associated myositis (Jo-1). 1287 mRNAs and 1068 mRNAs were differentially expressed in the muscle from Jo-1 and IBM patients, respectively. Pathway analysis showed the top canonical pathway in both Jo-1 and IBM was oxidative phosphorylation and mitochondrial dysfunction. We identified 731 known and 325 novel lncRNAs in the muscles biopsies. Comparison with controls showed 55 and 46 lncRNAs were differentially expressed in IBM and Jo-1 myositis, respectively. Of these, 16 lncRNAs were differentially expressed in both IBM and Jo-1 myositis and included upregulated H19, lncMyoD and MALAT1. Given that these are known to regulate muscle proliferation and differentiation, we speculate that changes in lncRNAs might contribute to the phenotypic changes in Jo-1 and IBM myositis.
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Affiliation(s)
- Philip D Hamann
- Department of Pharmacy and Pharmacology, University of Bath, Claverton Down, Bath, BA2 7AY, UK.,Royal National Hospital for Rheumatic Diseases, Upper Borough Walls, Bath, BA1 1RL, UK
| | - Benoit T Roux
- Department of Pharmacy and Pharmacology, University of Bath, Claverton Down, Bath, BA2 7AY, UK
| | - James A Heward
- Barts Cancer Institute, Queen Mary University of London, London, EC1M 6BQ, UK
| | - Seth Love
- Dementia Research Group, Institute of Clinical Neurosciences, School of Clinical Sciences, University of Bristol, Bristol, BS16 1LE, UK
| | - Neil J McHugh
- Department of Pharmacy and Pharmacology, University of Bath, Claverton Down, Bath, BA2 7AY, UK.,Royal National Hospital for Rheumatic Diseases, Upper Borough Walls, Bath, BA1 1RL, UK
| | - Simon W Jones
- MRC ARK Centre for Musculoskeletal Aging Research, University of Birmingham, Birmingham, B15 2TT, UK.
| | - Mark A Lindsay
- Department of Pharmacy and Pharmacology, University of Bath, Claverton Down, Bath, BA2 7AY, UK.
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26
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Abstract
PURPOSE OF REVIEW This article updates on the concept that muscle-derived cytokines (myokines) play important roles in muscle health and disease. RECENT FINDINGS Interleukin-6 (IL-6) is released from normal skeletal muscle in response to exercise, mediating both anti-inflammatory responses and metabolic adaptations, actions contradictory to the prevailing view that IL-6 is a proinflammatory cytokine that is inducing and propagating disease. The anti-inflammatory effects of IL-6 result from its trans-membrane signalling capability, via membrane-bound receptors, whereas its proinflammatory effects result instead from signalling via the soluble IL-6 receptor and gp130. IL-15 is elevated following exercise, promoting muscle fibre hypertrophy in some circumstances, while inducing fibre apoptosis in others. This functional divergence appears because of variations in expression of IL-15 receptor isoforms. Decorin, a recently described myokine, is also elevated following exercise in normal muscle, and promotes muscle fibre hypertrophy by competitively binding to, and thus inhibiting, myostatin, a negative regulator of muscle protein synthesis. Exercise-induced myostatin downregulation thus promotes muscle fibre growth, prompting recent trials of a biological myostatin inhibitor in inclusion body myositis. SUMMARY Myokines appear to exert diverse beneficial effects, though their mechanistic roles in myositis and other myopathologies remain poorly understood.
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27
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Afzali AM, Ruck T, Wiendl H, Meuth SG. Animal models in idiopathic inflammatory myopathies: How to overcome a translational roadblock? Autoimmun Rev 2017; 16:478-494. [DOI: 10.1016/j.autrev.2017.03.001] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2017] [Accepted: 02/13/2017] [Indexed: 12/19/2022]
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28
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Manole E, Bastian AE, Butoianu N, Goebel HH. Myositis non-inflammatory mechanisms: An up-dated review. J Immunoassay Immunochem 2017; 38:115-126. [DOI: 10.1080/15321819.2017.1298525] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Affiliation(s)
- Emilia Manole
- “Victor Babes” National Institute of Pathology, Bucharest, Romania
- Research Center, Colentina Clinical Hospital, Bucharest, Romania
| | - Alexandra E. Bastian
- Pathology Department, Colentina Clinical Hospital, Bucharest, Romania
- “Carol Davila” University of Medicine and Pharmacy, Bucharest, Romania
| | - Niculina Butoianu
- Pediatric Neurology Department, Clinical Hospital “Prof. Dr. Al. Obregia”, Bucharest, Romania
| | - Hans H. Goebel
- Department of Neuropathology, Charité – Universitätsmedizin Berlin, Berlin, Germany
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29
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Wong M, Funasaka K, Obayashi T, Miyahara R, Hirooka Y, Hamaguchi M, Goto H, Senga T. AMPD3 is associated with the malignant characteristics of gastrointestinal stromal tumors. Oncol Lett 2016; 13:1281-1287. [PMID: 28454247 DOI: 10.3892/ol.2016.5532] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2015] [Accepted: 09/01/2016] [Indexed: 11/05/2022] Open
Abstract
Gastrointestinal stromal tumors (GISTs) are mesenchymal tumors of the gastrointestinal tract. It is well known that activating mutations in the receptor tyrosine kinases KIT and platelet-derived growth factor receptor-α have essential roles in the pathogenesis of GISTs. The activation of these receptor protein kinases triggers multiple signaling pathways that promote cell proliferation and survival; however, the exact mechanism by which the activation of these kinases promotes the progression of GISTs remains uncertain. The aim of the present was to search for genes that are associated with the progression of GIST. The present study used reverse transcription-quantitative polymerase chain reaction to demonstrate that adenosine monophosphate deaminase 3 (AMPD3) was highly expressed in GISTs. Furthermore, transfection of GIST-T1 cells with KIT-specific small interfering RNA (siRNA) demonstrated that the expression of AMPD3 was dependent on KIT expression, while the depletion of AMPD3 in human GIST-T1 cells using AMPD3-specific siRNA resulted in the suppression of cell migration and invasion. In addition, AMPD3 depletion sensitized GIST-T1 cells to the tyrosine kinase inhibitor imatinib. The results of the present suggested that the combined inhibition of tyrosine kinases and AMPD3 may be effective for the treatment of GISTs.
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Affiliation(s)
- Meihong Wong
- Department of Gastroenterology and Hepatology, Nagoya University Graduate School of Medicine, Nagoya 466-8550, Japan
| | - Kohei Funasaka
- Department of Gastroenterology and Hepatology, Nagoya University Graduate School of Medicine, Nagoya 466-8550, Japan
| | - Tomohiko Obayashi
- Department of Gastroenterology and Hepatology, Nagoya University Graduate School of Medicine, Nagoya 466-8550, Japan
| | - Ryoji Miyahara
- Department of Gastroenterology and Hepatology, Nagoya University Graduate School of Medicine, Nagoya 466-8550, Japan
| | - Yoshiki Hirooka
- Department of Gastroenterology and Hepatology, Nagoya University Graduate School of Medicine, Nagoya 466-8550, Japan
| | - Michinari Hamaguchi
- Division of Cancer Biology, Nagoya University Graduate School of Medicine, Nagoya 466-8550, Japan
| | - Hidemi Goto
- Department of Gastroenterology and Hepatology, Nagoya University Graduate School of Medicine, Nagoya 466-8550, Japan
| | - Takeshi Senga
- Division of Cancer Biology, Nagoya University Graduate School of Medicine, Nagoya 466-8550, Japan
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30
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Sun Y, Huang Y, Hu G, Zhang X, Ruan Z, Zhao X, Guo C, Tang Z, Li X, You X, Lin H, Zhang Y, Shi Q. Comparative Transcriptomic Study of Muscle Provides New Insights into the Growth Superiority of a Novel Grouper Hybrid. PLoS One 2016; 11:e0168802. [PMID: 28005961 PMCID: PMC5179234 DOI: 10.1371/journal.pone.0168802] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2016] [Accepted: 12/05/2016] [Indexed: 12/13/2022] Open
Abstract
Grouper (Epinephelus spp.) is a group of fish species with great economic importance in Asian countries. A novel hybrid grouper, generated by us and called the Hulong grouper (Hyb), has better growth performance than its parents, E. fuscoguttatus (Efu, ♀) and E. lanceolatus (Ela, ♂). We previously reported that the GH/IGF (growth hormone/insulin-like growth factor) system in the brain and liver contributed to the superior growth of the Hyb. In this study, using transcriptome sequencing (RNA-seq) and quantitative real-time PCR (qRT-PCR), we analyzed RNA expression levels of comprehensive genes in the muscle of the hybrid and its parents. Our data showed that genes involved in glycolysis and calcium signaling in addition to troponins are up-regulated in the Hyb. The results suggested that the activity of the upstream GH/IGF system in the brain and liver, along with the up-regulated glycolytic genes as well as ryanodine receptors (RyRs) and troponins related to the calcium signaling pathway in muscle, led to enhanced growth in the hybrid grouper. Muscle contraction inducing growth could be the major contributor to the growth superiority in our novel hybrid grouper, which may be a common mechanism for hybrid superiority in fishes.
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Affiliation(s)
- Ying Sun
- State Key Laboratory of Biocontrol, Institute of Aquatic Economic Animals and Guangdong Provincial Key Laboratory for Aquatic Economic Animals, School of Life Sciences, Sun Yat-Sen University, Guangzhou, China
- Shenzhen Key Lab of Marine Genomics, Guangdong Provincial Key Lab of Molecular Breeding in Marine Economic Animals, BGI, Shenzhen, China
| | - Yu Huang
- Shenzhen Key Lab of Marine Genomics, Guangdong Provincial Key Lab of Molecular Breeding in Marine Economic Animals, BGI, Shenzhen, China
| | - Guojun Hu
- Shenzhen Key Lab of Marine Genomics, Guangdong Provincial Key Lab of Molecular Breeding in Marine Economic Animals, BGI, Shenzhen, China
| | - Xinhui Zhang
- Shenzhen Key Lab of Marine Genomics, Guangdong Provincial Key Lab of Molecular Breeding in Marine Economic Animals, BGI, Shenzhen, China
| | - Zhiqiang Ruan
- Shenzhen Key Lab of Marine Genomics, Guangdong Provincial Key Lab of Molecular Breeding in Marine Economic Animals, BGI, Shenzhen, China
| | - Xiaomeng Zhao
- Shenzhen Key Lab of Marine Genomics, Guangdong Provincial Key Lab of Molecular Breeding in Marine Economic Animals, BGI, Shenzhen, China
| | - Chuanyu Guo
- Shenzhen Key Lab of Marine Genomics, Guangdong Provincial Key Lab of Molecular Breeding in Marine Economic Animals, BGI, Shenzhen, China
| | - Zhujing Tang
- State Key Laboratory of Biocontrol, Institute of Aquatic Economic Animals and Guangdong Provincial Key Laboratory for Aquatic Economic Animals, School of Life Sciences, Sun Yat-Sen University, Guangzhou, China
| | - Xiaofeng Li
- Shenzhen Key Lab of Marine Genomics, Guangdong Provincial Key Lab of Molecular Breeding in Marine Economic Animals, BGI, Shenzhen, China
| | - Xinxin You
- Shenzhen Key Lab of Marine Genomics, Guangdong Provincial Key Lab of Molecular Breeding in Marine Economic Animals, BGI, Shenzhen, China
| | - Haoran Lin
- State Key Laboratory of Biocontrol, Institute of Aquatic Economic Animals and Guangdong Provincial Key Laboratory for Aquatic Economic Animals, School of Life Sciences, Sun Yat-Sen University, Guangzhou, China
- * E-mail: (Hl); (YZ); (QS)
| | - Yong Zhang
- State Key Laboratory of Biocontrol, Institute of Aquatic Economic Animals and Guangdong Provincial Key Laboratory for Aquatic Economic Animals, School of Life Sciences, Sun Yat-Sen University, Guangzhou, China
- * E-mail: (Hl); (YZ); (QS)
| | - Qiong Shi
- Shenzhen Key Lab of Marine Genomics, Guangdong Provincial Key Lab of Molecular Breeding in Marine Economic Animals, BGI, Shenzhen, China
- Center for Marine Research, School of Life Sciences and Oceanography, Shenzhen University, Shenzhen, China
- * E-mail: (Hl); (YZ); (QS)
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Understanding the origin of non-immune cell-mediated weakness in the idiopathic inflammatory myopathies – potential role of ER stress pathways. Curr Opin Rheumatol 2015; 27:580-5. [DOI: 10.1097/bor.0000000000000212] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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32
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Rannou F, Uguen A, Scotet V, Le Maréchal C, Rigal O, Marcorelles P, Gobin E, Carré JL, Zagnoli F, Giroux-Metges MA. Diagnostic Algorithm for Glycogenoses and Myoadenylate Deaminase Deficiency Based on Exercise Testing Parameters: A Prospective Study. PLoS One 2015. [PMID: 26207760 PMCID: PMC4514803 DOI: 10.1371/journal.pone.0132972] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022] Open
Abstract
Aim Our aim was to evaluate the accuracy of aerobic exercise testing to diagnose metabolic myopathies. Methods From December 2008 to September 2012, all the consecutive patients that underwent both metabolic exercise testing and a muscle biopsy were prospectively enrolled. Subjects performed an incremental and maximal exercise testing on a cycle ergometer. Lactate, pyruvate, and ammonia concentrations were determined from venous blood samples drawn at rest, during exercise (50% predicted maximal power, peak exercise), and recovery (2, 5, 10, and 15 min). Biopsies from vastus lateralis or deltoid muscles were analysed using standard techniques (reference test). Myoadenylate deaminase (MAD) activity was determined using p-nitro blue tetrazolium staining in muscle cryostat sections. Glycogen storage was assessed using periodic acid-Schiff staining. The diagnostic accuracy of plasma metabolite levels to identify absent and decreased MAD activity was assessed using Receiver Operating Characteristic (ROC) curve analysis. Results The study involved 51 patients. Omitting patients with glycogenoses (n = 3), MAD staining was absent in 5, decreased in 6, and normal in 37 subjects. Lactate/pyruvate at the 10th minute of recovery provided the greatest area under the ROC curves (AUC, 0.893 ± 0.067) to differentiate Abnormal from Normal MAD activity. The lactate/rest ratio at the 10th minute of recovery from exercise displayed the best AUC (1.0) for discriminating between Decreased and Absent MAD activities. The resulting decision tree achieved a diagnostic accuracy of 86.3%. Conclusion The present algorithm provides a non-invasive test to accurately predict absent and decreased MAD activity, facilitating the selection of patients for muscle biopsy and target appropriate histochemical analysis.
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Affiliation(s)
- Fabrice Rannou
- Physiology Department-EA 1274, CHRU Cavale Blanche, Brest, France
- * E-mail:
| | - Arnaud Uguen
- Pathology Department, CHRU Morvan, Brest, France
| | - Virginie Scotet
- Institut National de la Santé et de la Recherche Médicale, UMR 1078, Brest, France
| | - Cédric Le Maréchal
- Institut National de la Santé et de la Recherche Médicale, UMR 1078, Brest, France
| | - Odile Rigal
- Biochemistry Department, Robert Debré Hospital-APHP, Paris, France
| | | | - Eric Gobin
- Pathology Department, CHRU Morvan, Brest, France
| | - Jean-Luc Carré
- Biochemistry Department, CHRU Cavale Blanche, Brest, France
| | - Fabien Zagnoli
- Neurology Department-EA 4685 LNB, Clermont-Tonnerre Armed Forces Hospital, Brest, France
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Rayavarapu S, Coley W, Van der Meulen JH, Cakir E, Tappeta K, Kinder TB, Dillingham BC, Brown KJ, Hathout Y, Nagaraju K. Activation of the ubiquitin proteasome pathway in a mouse model of inflammatory myopathy: a potential therapeutic target. ACTA ACUST UNITED AC 2014; 65:3248-58. [PMID: 24022788 DOI: 10.1002/art.38180] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2013] [Accepted: 08/27/2013] [Indexed: 01/01/2023]
Abstract
OBJECTIVE Myositis is characterized by severe muscle weakness. We and others have previously shown that endoplasmic reticulum (ER) stress plays a role in the pathogenesis of myositis. The present study was undertaken to identify perturbed pathways and assess their contribution to muscle disease in a mouse myositis model. METHODS Stable isotope labeling with amino acids in cell culture (SILAC) was used to identify alterations in the skeletal muscle proteome of myositic mice in vivo. Differentially altered protein levels identified in the initial comparisons were validated using a liquid chromatography tandem mass spectrometry spike-in strategy and further confirmed by immunoblotting. In addition, we evaluated the effect of a proteasome inhibitor, bortezomib, on the disease phenotype, using well-standardized functional, histologic, and biochemical assessments. RESULTS With the SILAC technique we identified significant alterations in levels of proteins belonging to the ER stress response, ubiquitin proteasome pathway (UPP), oxidative phosphorylation, glycolysis, cytoskeleton, and muscle contractile apparatus categories. We validated the myositis-related changes in the UPP and demonstrated a significant increase in the ubiquitination of muscle proteins as well as a specific increase in ubiquitin carboxyl-terminal hydrolase isozyme L1 (UCHL-1) in myositis, but not in muscle affected by other dystrophies or normal muscle. Inhibition of the UPP with bortezomib significantly improved muscle function and also significantly reduced tumor necrosis factor α expression in the skeletal muscle of mice with myositis. CONCLUSION Our findings indicate that ER stress activates downstream UPPs and contributes to muscle degeneration and that UCHL-1 is a potential biomarker for disease progression. UPP inhibition offers a potential therapeutic strategy for myositis.
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Affiliation(s)
- Sree Rayavarapu
- Children's National Medical Center and George Washington University, Washington DC
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34
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Henriques-Pons A, Yu Q, Rayavarapu S, Cohen TV, Ampong B, Cha HJ, Jahnke V, Van der Meulen J, Wang D, Jiang W, Kandimalla ER, Agrawal S, Spurney CF, Nagaraju K. Role of Toll-like receptors in the pathogenesis of dystrophin-deficient skeletal and heart muscle. Hum Mol Genet 2013; 23:2604-17. [PMID: 24368419 DOI: 10.1093/hmg/ddt656] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Although the cause of Duchenne muscular dystrophy (DMD) is known, the specific factors that initiate and perpetuate disease progression are not well understood. We hypothesized that leaky dystrophin-deficient skeletal muscle releases endogenous danger signals (TLR ligands), which bind to Toll-like receptors (TLRs) on muscle and immune cells and activate downstream processes that facilitate degeneration and regeneration in dystrophic skeletal muscle. Here, we demonstrate that dystrophin-deficient mouse muscle cells show increased expression of several cell-surface and endosomal TLRs. In vitro screening identified ssRNA as a relevant endogenous TLR7 ligand. TLR7 activation led to myd88-dependent production of pro-inflammatory cytokines in dystrophin-deficient muscle cells, and cause significant degeneration/regeneration in vivo in mdx mouse muscle. Also, knockout of the central TLR adaptor protein, myd88 in mdx mice significantly improved skeletal and cardiac muscle function. Likewise, proof-of-concept experiments showed that treating young mdx mice with a TLR7/9 antagonist significantly reduced skeletal muscle inflammation and increased muscle force, suggesting that blocking this pathway may have therapeutic potential for DMD.
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Overexpression of MHC class I in muscle of lymphocyte-deficient mice causes a severe myopathy with induction of the unfolded protein response. THE AMERICAN JOURNAL OF PATHOLOGY 2013; 183:893-904. [PMID: 23850081 DOI: 10.1016/j.ajpath.2013.06.003] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/20/2012] [Revised: 05/10/2013] [Accepted: 06/04/2013] [Indexed: 12/20/2022]
Abstract
Muscle fibers do not normally express major histocompatibility complex class I (MHC-I) molecules, and their reexpression is a hallmark of inflammatory myopathies. It has been shown in mice that overexpression of MHC-I induces a poorly inflammatory myositis accompanied by the unfolded protein response (UPR), but it is unclear whether it is attributable to T-cell-mediated MHC-I-dependent immune responses or to MHC-I forced expression per se. Indeed, besides presenting antigenic peptides to CD8(+) T cells, MHC-I may also possibly exert nonimmunologic, yet poorly understood pathogenic effects. Thus, we investigated the pathogenicity of MHC-I expression in muscle independently of its immune functions. HT transgenic mice that conditionally overexpress H-2K(b) in muscle were bred to an immunodeficient Rag2(-/-) background. The muscle proteome was analyzed by label-free high-resolution protein quantitation and Western blot. Despite the absence of adaptive immunity, HT Rag2(-/-) mice developed a very severe myopathy associated with the cytoplasmic accumulation of H-2K(b) molecules. The UPR was manifest by up-regulation of characteristic proteins. In humans, we found that HLA class I molecules not only were expressed at the sarcolemma but also could accumulate intracellularly in some patients with inclusion body myositis. Accordingly, the UPR was triggered as a function of the degree of HLA accumulation in myofibers. Hence, reexpression of MHC-I in normally negative myofibers exerts pathogenic effects independently of its immune function.
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37
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Coley W, Rayavarapu S, van der Meulen JH, Duba AS, Nagaraju K. Daily supplementation of D-ribose shows no therapeutic benefits in the MHC-I transgenic mouse model of inflammatory myositis. PLoS One 2013; 8:e65970. [PMID: 23785461 PMCID: PMC3681851 DOI: 10.1371/journal.pone.0065970] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2013] [Accepted: 05/04/2013] [Indexed: 11/18/2022] Open
Abstract
Background Current treatments for idiopathic inflammatory myopathies (collectively called myositis) focus on the suppression of an autoimmune inflammatory response within the skeletal muscle. However, it has been observed that there is a poor correlation between the successful suppression of muscle inflammation and an improvement in muscle function. Some evidence in the literature suggests that metabolic abnormalities in the skeletal muscle underlie the weakness that continues despite successful immunosuppression. We have previously shown that decreased expression of a purine nucleotide cycle enzyme, adenosine monophosphate deaminase (AMPD1), leads to muscle weakness in a mouse model of myositis and may provide a mechanistic basis for muscle weakness. One of the downstream metabolites of this pathway, D-ribose, has been reported to alleviate symptoms of myalgia in patients with a congenital loss of AMPD1. Therefore, we hypothesized that supplementing exogenous D-ribose would improve muscle function in the mouse model of myositis. We treated normal and myositis mice with daily doses of D-ribose (4 mg/kg) over a 6-week time period and assessed its effects using a battery of behavioral, functional, histological and molecular measures. Results Treatment with D-ribose was found to have no statistically significant effects on body weight, grip strength, open field behavioral activity, maximal and specific forces of EDL, soleus muscles, or histological features. Histological and gene expression analysis indicated that muscle tissues remained inflamed despite treatment. Gene expression analysis also suggested that low levels of the ribokinase enzyme in the skeletal muscle might prevent skeletal muscle tissue from effectively utilizing D-ribose. Conclusions Treatment with daily oral doses of D-ribose showed no significant effect on either disease progression or muscle function in the mouse model of myositis.
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Affiliation(s)
- William Coley
- Research Center for Genetic Medicine, Children’s National Medical Center, Washington, D. C., United States of America
| | - Sree Rayavarapu
- Research Center for Genetic Medicine, Children’s National Medical Center, Washington, D. C., United States of America
| | - Jack H. van der Meulen
- Research Center for Genetic Medicine, Children’s National Medical Center, Washington, D. C., United States of America
| | - Ayyappa S. Duba
- Research Center for Genetic Medicine, Children’s National Medical Center, Washington, D. C., United States of America
| | - Kanneboyina Nagaraju
- Research Center for Genetic Medicine, Children’s National Medical Center, Washington, D. C., United States of America
- Department of Integrative Systems Biology, George Washington University School of Medicine, Washington, D. C., United States of America
- * E-mail:
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Rayavarapu S, Coley W, Kinder TB, Nagaraju K. Idiopathic inflammatory myopathies: pathogenic mechanisms of muscle weakness. Skelet Muscle 2013; 3:13. [PMID: 23758833 PMCID: PMC3681571 DOI: 10.1186/2044-5040-3-13] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2013] [Accepted: 04/22/2013] [Indexed: 11/25/2022] Open
Abstract
Idiopathic inflammatory myopathies (IIMs) are a heterogenous group of complex muscle diseases of unknown etiology. These diseases are characterized by progressive muscle weakness and damage, together with involvement of other organ systems. It is generally believed that the autoimmune response (autoreactive lymphocytes and autoantibodies) to skeletal muscle-derived antigens is responsible for the muscle fiber damage and muscle weakness in this group of disorders. Therefore, most of the current therapeutic strategies are directed at either suppressing or modifying immune cell activity. Recent studies have indicated that the underlying mechanisms that mediate muscle damage and dysfunction are multiple and complex. Emerging evidence indicates that not only autoimmune responses but also innate immune and non-immune metabolic pathways contribute to disease pathogenesis. However, the relative contributions of each of these mechanisms to disease pathogenesis are currently unknown. Here we discuss some of these complex pathways, their inter-relationships and their relation to muscle damage in myositis. Understanding the relative contributions of each of these pathways to disease pathogenesis would help us to identify suitable drug targets to alleviate muscle damage and also improve muscle weakness and quality of life for patients suffering from these debilitating muscle diseases.
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Affiliation(s)
- Sree Rayavarapu
- Research Center for Genetic Medicine, Children's National Medical Center, 111 Michigan Ave NW, Washington DC, USA.
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