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Meinhold M, Verbrugge S, Shi A, Schönfelder M, Becker L, Jaspers RT, Zammit PS, Wackerhage H. Yap/Taz activity is associated with increased expression of phosphoglycerate dehydrogenase that supports myoblast proliferation. Cell Tissue Res 2024; 395:271-283. [PMID: 38183459 PMCID: PMC10904560 DOI: 10.1007/s00441-023-03851-w] [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: 05/17/2023] [Accepted: 11/24/2023] [Indexed: 01/08/2024]
Abstract
In skeletal muscle, the Hippo effector Yap promotes satellite cell, myoblast, and rhabdomyoblast proliferation but prevents myogenic differentiation into multinucleated muscle fibres. We previously noted that Yap drives expression of the first enzyme of the serine biosynthesis pathway, phosphoglycerate dehydrogenase (Phgdh). Here, we examined the regulation and function of Phgdh in satellite cells and myoblasts and found that Phgdh protein increased during satellite cell activation. Analysis of published data reveal that Phgdh mRNA in mouse tibialis anterior muscle was highly expressed at day 3 of regeneration after cardiotoxin injection, when markers of proliferation are also robustly expressed and in the first week of synergist-ablated muscle. Finally, siRNA-mediated knockdown of PHGDH significantly reduced myoblast numbers and the proliferation rate. Collectively, our data suggest that Phgdh is a proliferation-enhancing metabolic enzyme that is induced when quiescent satellite cells become activated.
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Affiliation(s)
- Marius Meinhold
- School of Medicine and Health, Technical University of Munich, Connollystrasse 32, 80809, Munich, Germany.
| | - Sander Verbrugge
- School of Medicine and Health, Technical University of Munich, Connollystrasse 32, 80809, Munich, Germany
| | - Andi Shi
- Laboratory for Myology, Department of Human Movement Sciences, Faculty of Behavioural and Movement Sciences, Amsterdam Movement Sciences, Vrije Universiteit Amsterdam, De Boelelaan 1108, 1081 HZ, Amsterdam, The Netherlands
- Department of Prosthodontics, Guangdong Engineering Research Center of Oral Restoration and Reconstruction, Guangzhou Key Laboratory of Basic and Applied Research of Oral Regenerative Medicine, Affiliated Stomatology Hospital of Guangzhou Medical University, Guangzhou, China
| | - Martin Schönfelder
- School of Medicine and Health, Technical University of Munich, Connollystrasse 32, 80809, Munich, Germany
| | - Lore Becker
- Institute of Experimental Genetics, Helmholtz Zentrum München, German Research Center for Environmental Health, German Mouse Clinic, Ingolstädter Landstrasse 1, 85764, Neuherberg, Germany
| | - Richard T Jaspers
- Laboratory for Myology, Department of Human Movement Sciences, Faculty of Behavioural and Movement Sciences, Amsterdam Movement Sciences, Vrije Universiteit Amsterdam, De Boelelaan 1108, 1081 HZ, Amsterdam, The Netherlands
- Department of Prosthodontics, Guangdong Engineering Research Center of Oral Restoration and Reconstruction, Guangzhou Key Laboratory of Basic and Applied Research of Oral Regenerative Medicine, Affiliated Stomatology Hospital of Guangzhou Medical University, Guangzhou, China
| | - Peter S Zammit
- Randall Centre for Cell and Molecular Biophysics, King's College London, New Hunt's House, Guy's Campus, London, SE1 1UL, UK
| | - Henning Wackerhage
- School of Medicine and Health, Technical University of Munich, Connollystrasse 32, 80809, Munich, Germany
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Abbassi-Daloii T, el Abdellaoui S, Voortman LM, Veeger TTJ, Cats D, Mei H, Meuffels DE, van Arkel E, 't Hoen PAC, Kan HE, Raz V. A transcriptome atlas of leg muscles from healthy human volunteers reveals molecular and cellular signatures associated with muscle location. eLife 2023; 12:e80500. [PMID: 36744868 PMCID: PMC9988256 DOI: 10.7554/elife.80500] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2022] [Accepted: 02/03/2023] [Indexed: 02/07/2023] Open
Abstract
Skeletal muscles support the stability and mobility of the skeleton but differ in biomechanical properties and physiological functions. The intrinsic factors that regulate muscle-specific characteristics are poorly understood. To study these, we constructed a large atlas of RNA-seq profiles from six leg muscles and two locations from one muscle, using biopsies from 20 healthy young males. We identified differential expression patterns and cellular composition across the seven tissues using three bioinformatics approaches confirmed by large-scale newly developed quantitative immune-histology procedures. With all three procedures, the muscle samples clustered into three groups congruent with their anatomical location. Concomitant with genes marking oxidative metabolism, genes marking fast- or slow-twitch myofibers differed between the three groups. The groups of muscles with higher expression of slow-twitch genes were enriched in endothelial cells and showed higher capillary content. In addition, expression profiles of Homeobox (HOX) transcription factors differed between the three groups and were confirmed by spatial RNA hybridization. We created an open-source graphical interface to explore and visualize the leg muscle atlas (https://tabbassidaloii.shinyapps.io/muscleAtlasShinyApp/). Our study reveals the molecular specialization of human leg muscles, and provides a novel resource to study muscle-specific molecular features, which could be linked with (patho)physiological processes.
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Affiliation(s)
| | - Salma el Abdellaoui
- Department of Human Genetics, Leiden University Medical CenterLeidenNetherlands
| | - Lenard M Voortman
- Division of Cell and Chemical Biology, Leiden University Medical CenterLeidenNetherlands
| | - Thom TJ Veeger
- C.J. Gorter MRI Center, Department of Radiology, Leiden University Medical CenterLeidenNetherlands
| | - Davy Cats
- Sequencing Analysis Support Core, Leiden University Medical CenterLeidenNetherlands
| | - Hailiang Mei
- Sequencing Analysis Support Core, Leiden University Medical CenterLeidenNetherlands
| | - Duncan E Meuffels
- Orthopedic and Sport Medicine Department, Erasmus MC, University Medical Center RotterdamRotterdamNetherlands
| | | | - Peter AC 't Hoen
- Department of Human Genetics, Leiden University Medical CenterLeidenNetherlands
- Centre for Molecular and Biomolecular Informatics, Radboud Institute for Molecular Life Sciences, Radboud University Medical CenterRadboudNetherlands
| | - Hermien E Kan
- C.J. Gorter MRI Center, Department of Radiology, Leiden University Medical CenterLeidenNetherlands
- Duchenne Center NetherlandsLeidenNetherlands
| | - Vered Raz
- Department of Human Genetics, Leiden University Medical CenterLeidenNetherlands
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Garcia-Beltran C, Navarro-Gascon A, López-Bermejo A, Quesada-López T, de Zegher F, Ibáñez L, Villarroya F. Meteorin-like levels are associated with active brown adipose tissue in early infancy. Front Endocrinol (Lausanne) 2023; 14:1136245. [PMID: 36936161 PMCID: PMC10018039 DOI: 10.3389/fendo.2023.1136245] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/02/2023] [Accepted: 02/20/2023] [Indexed: 03/06/2023] Open
Abstract
INTRODUCTION Meteorin-like (METRNL) is a hormonal factor released by several tissues, including thermogenically active brown and beige adipose tissues. It exerts multiple beneficial effects on metabolic and cardiovascular systems in experimental models. However, the potential role of METRNL as brown adipokine in humans has not been investigated previously, particularly in relation to the metabolic adaptations taking place in early life, when brown adipose tissue (BAT) is particularly abundant. METHODS AND MATERIALS METRNL levels, as well as body composition (DXA) and circulating endocrine-metabolic variables, were assessed longitudinally in a cohort of infants at birth, and at ages 4 and 12 months. BAT activity was measured by infrared thermography at age 12 months. METRNL levels were also determined cross-sectionally in adults; METRNL gene expression (qRT-PCR) was assessed in BAT and liver samples from neonates, and in adipose tissue and liver samples form adults. Simpson-Golabi-Behmel Syndrome (SGBS) adipose cells were thermogenically activated using cAMP, and METRNL gene expression and METRNL protein released were analysed. RESULTS Serum METRNL levels were high at birth and declined across the first year of life albeit remaining higher than in adulthood. At age 4 and 12 months, METRNL levels correlated positively with circulating C-X-C motif chemokine ligand 14 (CXCL14), a chemokine released by thermogenically active BAT, but not with parameters of adiposity or metabolic status. METRNL levels also correlated positively with infrared thermography-estimated posterior-cervical BAT activity in girls aged 12 months. Gene expression analysis indicated high levels of METRNL mRNA in neonatal BAT. Thermogenic stimulus of brown/beige adipocytes led to a significant increase of METRNL gene expression and METRN protein release to the cell culture medium. CONCLUSION Circulating METRNL levels are high in the first year of life and correlate with indices of BAT activity and with levels of an established brown adipokine such as CXCL14. These data, in addition with the high expression of METRNL in neonatal BAT and in thermogenically-stimulated brown/beige adipocytes, suggest that METRNL is actively secreted by BAT and may be a circulating biomarker of BAT activity in early life.
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Affiliation(s)
- Cristina Garcia-Beltran
- Research Institute Sant Joan de Déu, University of Barcelona, Barcelona, Spain
- Centro de Investigación Biomédica en Red de Diabetes y Enfermedades Metabólicas Asociadas (CIBERDEM), Health Institute Carlos III, Madrid, Spain
| | - Artur Navarro-Gascon
- Biochemistry and Molecular Biomedicine Department, Biomedicine Institute, University of Barcelona, Barcelona, Spain
- Network Biomedical Research Center of Physiopathology of Obesity and Nutrition (CIBEROBN), Health Institute Carlos III, Madrid, Spain
| | - Abel López-Bermejo
- Department of Pediatrics, Dr. Josep Trueta Hospital, Girona, Spain
- Department of Medical Sciences, Faculty of Medicine, University of Girona, Girona, Spain
| | - Tania Quesada-López
- Biochemistry and Molecular Biomedicine Department, Biomedicine Institute, University of Barcelona, Barcelona, Spain
- Network Biomedical Research Center of Physiopathology of Obesity and Nutrition (CIBEROBN), Health Institute Carlos III, Madrid, Spain
| | - Francis de Zegher
- Leuven Research and Development, University of Leuven, Leuven, Belgium
| | - Lourdes Ibáñez
- Research Institute Sant Joan de Déu, University of Barcelona, Barcelona, Spain
- Centro de Investigación Biomédica en Red de Diabetes y Enfermedades Metabólicas Asociadas (CIBERDEM), Health Institute Carlos III, Madrid, Spain
| | - Francesc Villarroya
- Research Institute Sant Joan de Déu, University of Barcelona, Barcelona, Spain
- Biochemistry and Molecular Biomedicine Department, Biomedicine Institute, University of Barcelona, Barcelona, Spain
- Network Biomedical Research Center of Physiopathology of Obesity and Nutrition (CIBEROBN), Health Institute Carlos III, Madrid, Spain
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Endoplasmic reticulum stress and the unfolded protein response in skeletal muscle of subjects suffering from peritoneal sepsis. Sci Rep 2022; 12:504. [PMID: 35017615 PMCID: PMC8752775 DOI: 10.1038/s41598-021-04517-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2021] [Accepted: 12/23/2021] [Indexed: 12/15/2022] Open
Abstract
We provide a descriptive characterization of the unfolded protein response (UPR) in skeletal muscle of human patients with peritoneal sepsis and a sepsis model of C57BL/6J mice. Patients undergoing open surgery were included in a cross-sectional study and blood and skeletal muscle samples were taken. Key markers of the UPR and cluster of differentiation 68 (CD68) as surrogate of inflammatory injury were evaluated by real-time PCR and histochemical staining. CD68 mRNA increased with sepsis in skeletal muscle of patients and animals (p < 0.05). Mainly the inositol-requiring enzyme 1α branch of the UPR was upregulated as shown by elevated X-box binding-protein 1 (XBP1u) and its spliced isoform (XBP1s) mRNA (p < 0.05, respectively). Increased expression of Gadd34 indicated activation of PRKR-Like Endoplasmic Reticulum Kinase (PERK) branch of the UPR, and was only observed in mice (p < 0.001) but not human study subjects. Selected cell death signals were upregulated in human and murine muscle, demonstrated by increased bcl-2 associated X protein mRNA and TUNEL staining (p < 0.05). In conclusion we provide a first characterization of the UPR in skeletal muscle in human sepsis.
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Yan X, Shen Z, Yu D, Zhao C, Zou H, Ma B, Dong W, Chen W, Huang D, Yu Z. Nrf2 contributes to the benefits of exercise interventions on age-related skeletal muscle disorder via regulating Drp1 stability and mitochondrial fission. Free Radic Biol Med 2022; 178:59-75. [PMID: 34823019 DOI: 10.1016/j.freeradbiomed.2021.11.030] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/08/2021] [Revised: 11/03/2021] [Accepted: 11/20/2021] [Indexed: 02/09/2023]
Abstract
The progressive and generalized loss of skeletal muscle mass and function, also known as sarcopenia, underlies disability, increasing adverse outcomes and poor quality of life in older people. Exercise interventions are commonly recommended as the primary treatment for sarcopenia. Nuclear factor erythroid 2-related factor 2 (Nrf2) plays a vital role in regulating metabolism, mitochondrial function, and the ROS-dependent adaptations of skeletal muscle, as the response to exercise. To investigate the contribution of Nrf2 to the benefits of exercise interventions in older age, aged (∼22 month old) Nrf2 knockout (Nrf2-KO) mice and age-matched wild-type (WT) C57BL6/J mice were randomly divided into 2 groups (sedentary or exercise group). We found that exercise interventions improved skeletal muscle function and restored the sarcopenia-like phenotype in WT mice, accompanied with the increasing mRNA level of Nrf2. While these alternations were minimal in Nrf2-KO mice after exercise. Further studies indicated that Nrf2 could increase the stability of Drp1 through deubiquitinating and promote Drp1-dependent mitochondrial fission to attenuate mitochondrial disorder. We also observed the effects of sulforaphane (SFN), a Nrf2 activator, in restoring mitochondrial function in senescent C2C12 cells and improving sarcopenia in older WT mice, which were abolished by Nrf2 deficiency. These results indicated that some benefits of exercise intervention to skeletal muscle were Nrf2 mediated, and a future work should focus on Nrf2 signaling to identify a pharmacological treatment for sarcopenia.
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Affiliation(s)
- Xialin Yan
- Department of Gastrointestinal Surgery, Shanghai Tenth People's Hospital, School of Medicine, Tongji University, Shanghai, China
| | - Zile Shen
- Department of Gastrointestinal Surgery, Shanghai Tenth People's Hospital, School of Medicine, Tongji University, Shanghai, China
| | - Dingye Yu
- Department of General Surgery, Shanghai Minimally Invasive Surgery Center, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Chongke Zhao
- Department of Medical Ultrasound, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China
| | - Hongbo Zou
- Department of Gastrointestinal Surgery, Shanghai Tenth People's Hospital, School of Medicine, Tongji University, Shanghai, China; Department of Gastrointestinal Surgery, People's Hospital of Deyang City, Deyang, Sichuan, China
| | - Bingwei Ma
- Department of Gastrointestinal Surgery, Shanghai Tenth People's Hospital, School of Medicine, Tongji University, Shanghai, China
| | - Wenxi Dong
- Department of Gastrointestinal Surgery, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Wenhao Chen
- Department of Gastrointestinal Surgery, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Dongdong Huang
- Department of Gastrointestinal Surgery, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China.
| | - Zhen Yu
- Department of Gastrointestinal Surgery, Shanghai Tenth People's Hospital, School of Medicine, Tongji University, Shanghai, China; Department of Gastrointestinal Surgery, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China.
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Saad NY, Al-Kharsan M, Garwick-Coppens SE, Chermahini GA, Harper MA, Palo A, Boudreau RL, Harper SQ. Human miRNA miR-675 inhibits DUX4 expression and may be exploited as a potential treatment for Facioscapulohumeral muscular dystrophy. Nat Commun 2021; 12:7128. [PMID: 34880230 PMCID: PMC8654987 DOI: 10.1038/s41467-021-27430-1] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2020] [Accepted: 11/18/2021] [Indexed: 01/02/2023] Open
Abstract
Facioscapulohumeral muscular dystrophy (FSHD) is a potentially devastating myopathy caused by de-repression of the DUX4 gene in skeletal muscles. Effective therapies will likely involve DUX4 inhibition. RNA interference (RNAi) is one powerful approach to inhibit DUX4, and we previously described a RNAi gene therapy to achieve DUX4 silencing in FSHD cells and mice using engineered microRNAs. Here we report a strategy to direct RNAi against DUX4 using the natural microRNA miR-675, which is derived from the lncRNA H19. Human miR-675 inhibits DUX4 expression and associated outcomes in FSHD cell models. In addition, miR-675 delivery using gene therapy protects muscles from DUX4-associated death in mice. Finally, we show that three known miR-675-upregulating small molecules inhibit DUX4 and DUX4-activated FSHD biomarkers in FSHD patient-derived myotubes. To our knowledge, this is the first study demonstrating the use of small molecules to suppress a dominant disease gene using an RNAi mechanism.
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Affiliation(s)
- Nizar Y. Saad
- grid.240344.50000 0004 0392 3476Center for Gene Therapy, the Abigail Wexner Research Institute at Nationwide Children’s Hospital, Columbus, OH USA
| | - Mustafa Al-Kharsan
- grid.240344.50000 0004 0392 3476Center for Gene Therapy, the Abigail Wexner Research Institute at Nationwide Children’s Hospital, Columbus, OH USA ,grid.266832.b0000 0001 2188 8502Department of Neurology, University of New Mexico Health Sciences Center, Albuquerque, NM USA
| | - Sara E. Garwick-Coppens
- grid.240344.50000 0004 0392 3476Center for Gene Therapy, the Abigail Wexner Research Institute at Nationwide Children’s Hospital, Columbus, OH USA
| | - Gholamhossein Amini Chermahini
- grid.240344.50000 0004 0392 3476Center for Gene Therapy, the Abigail Wexner Research Institute at Nationwide Children’s Hospital, Columbus, OH USA
| | - Madison A. Harper
- grid.240344.50000 0004 0392 3476Center for Gene Therapy, the Abigail Wexner Research Institute at Nationwide Children’s Hospital, Columbus, OH USA
| | - Andrew Palo
- grid.240344.50000 0004 0392 3476Center for Gene Therapy, the Abigail Wexner Research Institute at Nationwide Children’s Hospital, Columbus, OH USA
| | - Ryan L. Boudreau
- grid.214572.70000 0004 1936 8294Department of Internal Medicine, Fraternal Order of Eagles Diabetes Research Center, Abboud Cardiovascular Research Center, Carver College of Medicine, University of Iowa, Iowa City, IA USA
| | - Scott Q. Harper
- grid.240344.50000 0004 0392 3476Center for Gene Therapy, the Abigail Wexner Research Institute at Nationwide Children’s Hospital, Columbus, OH USA ,grid.261331.40000 0001 2285 7943Department of Pediatrics, The Ohio State University College of Medicine, Columbus, OH USA
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Kan J, Hu Y, Ge Y, Zhang W, Lu S, Zhao C, Zhang R, Liu Y. Declined expressions of vast mitochondria-related genes represented by CYCS and transcription factor ESRRA in skeletal muscle aging. Bioengineered 2021; 12:3485-3502. [PMID: 34229541 PMCID: PMC8806411 DOI: 10.1080/21655979.2021.1948951] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2021] [Revised: 06/22/2021] [Accepted: 06/23/2021] [Indexed: 11/23/2022] Open
Abstract
Age-related skeletal muscle deterioration (sarcopenia) has a significant effect on the elderly's health and quality of life, but the molecular and gene regulatory mechanisms remain largely unknown. It is necessary to identify the candidate genes related to skeletal muscle aging and prospective therapeutic targets for effective treatments. The age-line-related genes (ALRGs) and age-line-related transcripts (ALRTs) were investigated using the gene expression profiles of GSE47881 and GSE118825 from the Gene Expression Omnibus (GEO) database. The protein-protein interaction (PPI) networks were performed to identify the key molecules with Cytoscape, and Gene Set Enrichment Analysis (GSEA) was used to clarify the potential molecular functions. Two hub molecules were finally obtained and verified with quantitative real-time PCR (qRT-PCR). The results showed that the expression of mitochondria genes involved in mitochondrial electron transport, complex assembly of the respiratory chain, tricarboxylic acid cycle, oxidative phosphorylation, and ATP synthesis were down-regulated in skeletal muscle with aging. We further identified a primary hub gene of CYCS (Cytochrome C) and a key transcription factor of ESRRA (Estrogen-related Receptor Alpha) to be associated closely with skeletal muscle aging. PCR analysis confirmed the expressions of CYCS and ESRRA in gastrocnemius muscles of mice of different ages were significantly different, and decreased gradually with age. In conclusion, the main cause of skeletal muscle aging may be the systematically reduced expression of mitochondrial functional genes. The CYCS and ESRRA may play significant roles in the progression of skeletal muscle aging and serve as potential biomarkers for future diagnosis and treatment.
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Affiliation(s)
- Jingbao Kan
- Department of Geriatrics, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Yifang Hu
- Department of Geriatrics, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Yaoqi Ge
- Department of Geriatrics, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - WenSong Zhang
- Department of Geriatrics, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Shan Lu
- Department of Geriatrics, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Cuiping Zhao
- Department of Geriatrics, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Rihua Zhang
- Department of Geriatrics, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Yun Liu
- Department of Geriatrics, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
- Department of Medical Informatics, School of Biomedical Engineering and Informatics, Nanjing Medical University, Nanjing, China
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Ghosh S, Renapurkar R, Raman SV. Skeletal myopathy in a family with lamin A/C cardiac disease. Cardiovasc Diagn Ther 2016; 6:417-423. [PMID: 27747164 DOI: 10.21037/cdt.2016.03.10] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
BACKGROUND The objective of this study was to evaluate patients with known hereditary cardiac conduction and myocardial disease (HCCMD) caused by a lamin A/C gene mutation for skeletal muscle involvement using magnetic resonance imaging (MRI) computed tomography (CT). METHODS Twenty-one patients with the diagnosis of HCCMD were available for study. Of these 21, 11 had MRI scans of the lower legs. The 11 that had an MRI were compared to a control group of 17 healthy controls. In ten patients in whom MRI was contraindicated, CT was used for lower leg imaging and the gastrocnemius muscle was compared to an unaffected muscle. RESULTS In patients with severe cardiac involvement defined as conduction system disease requiring pacemaker implant and CT instead of MRI, there was a significant difference in the composition of the unaffected muscle versus the gastrocnemius muscle, P<0.05. In the patients who underwent MRI, there was no statistical significance between the normal population and the study population. However, many study patients' images showed dramatic changes in the gastrocnemius muscle where there was definite replacement of muscle tissue by fibrofatty tissue. CONCLUSIONS Our results showed that patients with HCCMD can also present with skeletal muscle problems. The degree of skeletal muscle involvement is greater in HCCMD patients requiring implantable cardiac devices.
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Affiliation(s)
- Subha Ghosh
- Cleveland Clinic Foundation, Cleveland, OH, USA
| | | | - Subha V Raman
- The Ohio State University College of Medicine and Public Health, Columbus, OH, USA
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Takeda E, Suzuki Y, Sato Y. Age-associated downregulation of vasohibin-1 in vascular endothelial cells. Aging Cell 2016; 15:885-92. [PMID: 27325558 PMCID: PMC5013028 DOI: 10.1111/acel.12497] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/18/2016] [Indexed: 12/21/2022] Open
Abstract
Vasohibin-1 (VASH1) is an angiogenesis-inhibiting factor synthesized by endothelial cells (ECs) and it also functions to increase stress tolerance of ECs, which function is critical for the maintenance of vascular integrity. Here, we examined whether the expression of VASH1 would be affected by aging. We passaged human umbilical vein endothelial cells (HUVECs) and observed that VASH1 was downregulated in old HUVECs. This decrease in VASH1 expression with aging was confirmed in mice. To explore the mechanism of this downregulation, we compared the expression of microRNAs between old and young HUVECs by performing microarray analysis. Among the top 20 microRNAs that were expressed at a higher level in old HUVECs, the third highest microRNA, namely miR-22-3p, had its binding site on the 3' UTR of VASH1 mRNA. Experiments with microRNA mimic and anti-miR revealed that miR-22-3p was involved at least in part in the downregulation of VASH1 in ECs during replicative senescence. We then clarified the significance of this defective expression of VASH1 in the vasculature. When a cuff was placed around the femoral arteries of wild-type mice and VASH1-null mice, neointimal formation was augmented in the VASH1-null mice accompanied by an increase in adventitial angiogenesis, macrophage accumulation in the adventitia, and medial/neointimal proliferating cells. These results indicate that in replicative senescence, the downregulation of VASH1 expression in ECs was caused, at least in part, by the alteration of microRNA expression. Such downregulation of VASH1 might be involved in the acceleration of age-associated vascular diseases.
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Affiliation(s)
- Eichi Takeda
- Department of Vascular Biology Institute of Development, Aging and Cancer Tohoku University 4‐1, Seiryo‐machi, Aoba‐ku Sendai 980‐8575 Japan
| | - Yasuhiro Suzuki
- Department of Vascular Biology Institute of Development, Aging and Cancer Tohoku University 4‐1, Seiryo‐machi, Aoba‐ku Sendai 980‐8575 Japan
| | - Yasufumi Sato
- Department of Vascular Biology Institute of Development, Aging and Cancer Tohoku University 4‐1, Seiryo‐machi, Aoba‐ku Sendai 980‐8575 Japan
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Tsompanidis A, Vafiadaki E, Blüher S, Kalozoumi G, Sanoudou D, Mantzoros CS. Ciliary neurotrophic factor upregulates follistatin and Pak1, causes overexpression of muscle differentiation related genes and downregulation of established atrophy mediators in skeletal muscle. Metabolism 2016; 65:915-25. [PMID: 27173470 DOI: 10.1016/j.metabol.2016.03.005] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/01/2016] [Revised: 03/01/2016] [Accepted: 03/09/2016] [Indexed: 10/22/2022]
Abstract
INTRODUCTION The Ciliary Neurotrophic Factor (CNTF) is a pluripotent cytokine with anorexigenic actions in the hypothalamus that improves insulin sensitivity, increases energy expenditure and induces weight loss. Since CNTF also has an established myotrophic role, we sought to examine whether skeletal muscle contributes to the CNTF-induced metabolic improvement and identify the molecular mechanisms mediating these effects. METHODS We used a mouse model of diet-induced obesity, to which high or low CNTF doses were administered for 7days. Whole transcriptome expression levels were analyzed in dissected soleus muscles using microarrays and data were then confirmed using qRT-PCR. RESULTS We demonstrate that CNTF administration significantly downregulates leptin, while it upregulates follistatin and Pak1; a molecule associated with insulin sensitization in skeletal muscle. A significant overexpression of muscle differentiation related genes and downregulation of established atrophy mediators was observed. CONCLUSIONS The overall gene expression changes suggest an indirect, beneficial effect of CNTF on metabolism, energy expenditure and insulin sensitivity, exerted by the pronounced stimulation of muscle growth, with similarities to the described effect of follistatin and the activation of the Akt pathway in skeletal muscle.
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Affiliation(s)
- Alexandros Tsompanidis
- Clinical Genomics and Pharmacogenomics Unit, 4th Department of Internal Medicine, Medical School, National and Kapodistrian University of Athens, Athens, Greece
| | - Elizabeth Vafiadaki
- Molecular Biology Division, Biomedical Research Foundation of the Academy of Athens, Athens, Greece
| | - Susann Blüher
- Division of Endocrinology, Diabetes, and Metabolism, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - Georgia Kalozoumi
- Clinical Genomics and Pharmacogenomics Unit, 4th Department of Internal Medicine, Medical School, National and Kapodistrian University of Athens, Athens, Greece
| | - Despina Sanoudou
- Clinical Genomics and Pharmacogenomics Unit, 4th Department of Internal Medicine, Medical School, National and Kapodistrian University of Athens, Athens, Greece; Molecular Biology Division, Biomedical Research Foundation of the Academy of Athens, Athens, Greece.
| | - Christos S Mantzoros
- Division of Endocrinology, Diabetes, and Metabolism, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
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Boman N, Burén J, Antti H, Svensson MB. Gene expression and fiber type variations in repeated vastus lateralis biopsies. Muscle Nerve 2015; 52:812-7. [DOI: 10.1002/mus.24616] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2014] [Revised: 01/28/2015] [Accepted: 02/11/2015] [Indexed: 11/05/2022]
Affiliation(s)
- Niklas Boman
- Department of Community Medicine and Rehabilitation; Sports Medicine, Umeå University; Umå Sweden
| | - Jonas Burén
- Department of Public Health and Clinical Medicine; Medicine, Umeå University; Umeå Sweden
| | - Henrik Antti
- Department of Chemistry; Umeå University; Umeå Sweden
| | - Michael B. Svensson
- Department of Community Medicine and Rehabilitation; Sports Medicine, Umeå University; Umå Sweden
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Brown AE, Palsgaard J, Borup R, Avery P, Gunn DA, De Meyts P, Yeaman SJ, Walker M. p38 MAPK activation upregulates proinflammatory pathways in skeletal muscle cells from insulin-resistant type 2 diabetic patients. Am J Physiol Endocrinol Metab 2015; 308:E63-70. [PMID: 25370850 PMCID: PMC4281683 DOI: 10.1152/ajpendo.00115.2014] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Skeletal muscle is the key site of peripheral insulin resistance in type 2 diabetes. Insulin-stimulated glucose uptake is decreased in differentiated diabetic cultured myotubes, which is in keeping with a retained genetic/epigenetic defect of insulin action. We investigated differences in gene expression during differentiation between diabetic and control muscle cell cultures. Microarray analysis was performed using skeletal muscle cell cultures established from type 2 diabetic patients with a family history of type 2 diabetes and clinical evidence of marked insulin resistance and nondiabetic control subjects with no family history of diabetes. Genes and pathways upregulated with differentiation in the diabetic cultures, compared with controls, were identified using Gene Spring and Gene Set Enrichment Analysis. Gene sets upregulated in diabetic myotubes were associated predominantly with inflammation. p38 MAPK was identified as a key regulator of the expression of these proinflammatory gene sets, and p38 MAPK activation was found to be increased in the diabetic vs. control myotubes. Although inhibition of p38 MAPK activity decreased cytokine gene expression from the cultured diabetic myotubes significantly, it did not improve insulin-stimulated glucose uptake. Increased cytokine expression driven by increased p38 MAPK activation is a key feature of cultured myotubes derived from insulin-resistant type 2 diabetic patients. p38 MAPK inhibition decreased cytokine expression but did not affect the retained defect of impaired insulin action in the diabetic muscle cells.
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Affiliation(s)
- Audrey E Brown
- Institute of Cellular Medicine, Newcastle University, Newcastle, United Kingdom
| | - Jane Palsgaard
- Receptor Systems Biology Laboratory, Hagedorn Research Institute, Novo Nordisk, Gentofte, Denmark
| | - Rehannah Borup
- Department of Clinical Biochemistry, Rigshospitalet, University of Copenhagen, Copenhagen, Denmark
| | - Peter Avery
- School of Mathematics and Statistics, Newcastle University, Newcastle, United Kingdom; and
| | - David A Gunn
- Unilever Discover, Colworth Science Park, Sharnbrook, Bedford, United Kingdom
| | - Pierre De Meyts
- Receptor Systems Biology Laboratory, Hagedorn Research Institute, Novo Nordisk, Gentofte, Denmark
| | - Stephen J Yeaman
- Institute of Cellular Medicine, Newcastle University, Newcastle, United Kingdom
| | - Mark Walker
- Institute of Cellular Medicine, Newcastle University, Newcastle, United Kingdom;
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13
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Hackman P, Sarparanta J, Lehtinen S, Vihola A, Evilä A, Jonson PH, Luque H, Kere J, Screen M, Chinnery PF, Åhlberg G, Edström L, Udd B. Welander distal myopathy is caused by a mutation in the RNA-binding protein TIA1. Ann Neurol 2013; 73:500-9. [PMID: 23401021 DOI: 10.1002/ana.23831] [Citation(s) in RCA: 102] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2012] [Revised: 10/14/2012] [Accepted: 11/30/2012] [Indexed: 12/11/2022]
Abstract
OBJECTIVE A study was undertaken to identify the molecular cause of Welander distal myopathy (WDM), a classic autosomal dominant distal myopathy. METHODS The genetic linkage was confirmed and defined by microsatellite and single nucleotide polymorphism haplotyping. The whole linked genomic region was sequenced with targeted high-throughput and Sanger sequencing, and coding transcripts were sequenced on the cDNA level. WDM muscle biopsies were studied by Western blotting and immunofluorescence microscopy. Splicing of TIA1 and its target genes in muscle and myoblast cultures was analyzed by reverse transcriptase polymerase chain reaction. Mutant TIA1 was characterized by cell biological studies on HeLa cells, including quantification of stress granules by high content analysis and fluorescence recovery after photobleaching (FRAP) experiments. RESULTS The linked haplotype at 2p13 was narrowed down to <806 kb. Sequencing by multiple methods revealed only 1 segregating coding mutation, c.1362 G>A (p.E384K) in the RNA-binding protein TIA1, a key component of stress granules. Immunofluorescence microscopy of WDM biopsies showed a focal increase of TIA1 in atrophic and vacuolated fibers. In HeLa cells, mutant TIA1 constructs caused a mild increase in stress granule abundance compared to wild type, and showed slower average fluorescence recovery in FRAP. INTERPRETATION WDM is caused by mutated TIA1 through a dominant pathomechanism probably involving altered stress granule dynamics.
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Affiliation(s)
- Peter Hackman
- Folkhälsan Institute of Genetics and Department of Medical Genetics, Haartman Institute, University of Helsinki, Helsinki, Finland
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14
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Rahimov F, King OD, Leung DG, Bibat GM, Emerson CP, Kunkel LM, Wagner KR. Transcriptional profiling in facioscapulohumeral muscular dystrophy to identify candidate biomarkers. Proc Natl Acad Sci U S A 2012; 109:16234-9. [PMID: 22988124 PMCID: PMC3479603 DOI: 10.1073/pnas.1209508109] [Citation(s) in RCA: 71] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Abstract
Facioscapulohumeral muscular dystrophy (FSHD) is a progressive neuromuscular disorder caused by contractions of repetitive elements within the macrosatellite D4Z4 on chromosome 4q35. The pathophysiology of FSHD is unknown and, as a result, there is currently no effective treatment available for this disease. To better understand the pathophysiology of FSHD and develop mRNA-based biomarkers of affected muscles, we compared global analysis of gene expression in two distinct muscles obtained from a large number of FSHD subjects and their unaffected first-degree relatives. Gene expression in two muscle types was analyzed using GeneChip Gene 1.0 ST arrays: biceps, which typically shows an early and severe disease involvement; and deltoid, which is relatively uninvolved. For both muscle types, the expression differences were mild: using relaxed cutoffs for differential expression (fold change ≥1.2; nominal P value <0.01), we identified 191 and 110 genes differentially expressed between affected and control samples of biceps and deltoid muscle tissues, respectively, with 29 genes in common. Controlling for a false-discovery rate of <0.25 reduced the number of differentially expressed genes in biceps to 188 and in deltoid to 7. Expression levels of 15 genes altered in this study were used as a "molecular signature" in a validation study of an additional 26 subjects and predicted them as FSHD or control with 90% accuracy based on biceps and 80% accuracy based on deltoids.
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Affiliation(s)
- Fedik Rahimov
- Program in Genomics, Division of Genetics, Boston Children’s Hospital, Harvard Medical School, Boston, MA 02115
- The Senator Paul D. Wellstone Muscular Dystrophy Cooperative Research Center and
| | - Oliver D. King
- The Senator Paul D. Wellstone Muscular Dystrophy Cooperative Research Center and
- Boston Biomedical Research Institute, Watertown, MA 02472
| | - Doris G. Leung
- Hugo W. Moser Research Institute at Kennedy Krieger Institute, Baltimore, MD 21205; Departments of
- Neurology and
| | - Genila M. Bibat
- Hugo W. Moser Research Institute at Kennedy Krieger Institute, Baltimore, MD 21205; Departments of
| | - Charles P. Emerson
- The Senator Paul D. Wellstone Muscular Dystrophy Cooperative Research Center and
- Boston Biomedical Research Institute, Watertown, MA 02472
| | - Louis M. Kunkel
- Program in Genomics, Division of Genetics, Boston Children’s Hospital, Harvard Medical School, Boston, MA 02115
- The Senator Paul D. Wellstone Muscular Dystrophy Cooperative Research Center and
- The Manton Center for Orphan Disease Research, Boston Children’s Hospital, Boston, MA 02115
| | - Kathryn R. Wagner
- Hugo W. Moser Research Institute at Kennedy Krieger Institute, Baltimore, MD 21205; Departments of
- Neurology and
- Neuroscience, The Johns Hopkins School of Medicine, Baltimore, MD 21205; and
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15
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Sarcomas induced in discrete subsets of prospectively isolated skeletal muscle cells. Proc Natl Acad Sci U S A 2011; 108:20002-7. [PMID: 22135462 DOI: 10.1073/pnas.1111733108] [Citation(s) in RCA: 64] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023] Open
Abstract
Soft-tissue sarcomas are heterogeneous cancers that can present with tissue-specific differentiation markers. To examine the cellular basis for this histopathological variation and to identify sarcoma-relevant molecular pathways, we generated a chimeric mouse model in which sarcoma-associated genetic lesions can be introduced into discrete, muscle-resident myogenic and mesenchymal cell lineages. Expression of Kirsten rat sarcoma viral oncogene [Kras(G12V)] and disruption of cyclin-dependent kinase inhibitor 2A (CDKN2A; p16p19) in prospectively isolated satellite cells gave rise to pleomorphic rhabdomyosarcomas (MyoD-, Myogenin- and Desmin-positive), whereas introduction of the same oncogenetic hits in nonmyogenic progenitors induced pleomorphic sarcomas lacking myogenic features. Transcriptional profiling demonstrated that myogenic and nonmyogenic Kras; p16p19(null) sarcomas recapitulate gene-expression signatures of human rhabdomyosarcomas and identified a cluster of genes that is concordantly up-regulated in both mouse and human sarcomas. This cluster includes genes associated with Ras and mechanistic target of rapamycin (mTOR) signaling, a finding consistent with activation of the Ras and mTOR pathways both in Kras; p16p19(null) sarcomas and in 26-50% of human rhabdomyosarcomas surveyed. Moreover, chemical inhibition of Ras or mTOR signaling arrested the growth of mouse Kras; p16p19(null) sarcomas and of human rhabdomyosarcoma cells in vitro and in vivo. Taken together, these data demonstrate the critical importance of lineage commitment within the tumor cell-of-origin in determining sarcoma histotype and introduce an experimental platform for rapid dissection of sarcoma-relevant cellular and molecular events.
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Cyclosporine A in Ullrich congenital muscular dystrophy: long-term results. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2011; 2011:139194. [PMID: 22028947 PMCID: PMC3199070 DOI: 10.1155/2011/139194] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/19/2011] [Revised: 08/09/2011] [Accepted: 08/11/2011] [Indexed: 11/18/2022]
Abstract
Six individuals with Ullrich congenital muscular dystrophy (UCMD) and mutations in the genes-encoding collagen VI, aging 5–9, received 3–5 mg/kg of cyclosporine A (CsA) daily for 1 to 3.2 years. The primary outcome measure was the muscle strength evaluated with a myometer and expressed as megalimbs. The megalimbs score showed significant improvement (P = 0.01) in 5 of the 6 patients. Motor function did not change. Respiratory function deteriorated in all. CsA treatment corrected mitochondrial dysfunction, increased muscle regeneration, and decreased the number of apoptotic nuclei. Results from this study demonstrate that long-term treatment with CsA ameliorates performance in the limbs, but not in the respiratory muscles of UCMD patients, and that it is well tolerated. These results suggest considering a trial of CsA or nonimmunosuppressive cyclosporins, that retains the PTP-desensitizing properties of CsA, as early as possible in UCMD patients when diaphragm is less compromised.
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17
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Nierobisz LS, Sporer KRB, Strasburg GM, Reed KM, Velleman SG, Ashwell CM, Felts JV, Mozdziak PE. Differential expression of genes characterizing myofibre phenotype. Anim Genet 2011; 43:298-308. [DOI: 10.1111/j.1365-2052.2011.02249.x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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18
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Thomas R, de la Torre L, Chang X, Mehrotra S. Validation and characterization of DNA microarray gene expression data distribution and associated moments. BMC Bioinformatics 2010; 11:576. [PMID: 21092329 PMCID: PMC3002903 DOI: 10.1186/1471-2105-11-576] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2010] [Accepted: 11/24/2010] [Indexed: 02/03/2023] Open
Abstract
Background The data from DNA microarrays are increasingly being used in order to understand effects of different conditions, exposures or diseases on the modulation of the expression of various genes in a biological system. This knowledge is then further used in order to generate molecular mechanistic hypotheses for an organism when it is exposed to different conditions. Several different methods have been proposed to analyze these data under different distributional assumptions on gene expression. However, the empirical validation of these assumptions is lacking. Results Best fit hypotheses tests, moment-ratio diagrams and relationships between the different moments of the distribution of the gene expression was used to characterize the observed distributions. The data are obtained from the publicly available gene expression database, Gene Expression Omnibus (GEO) to characterize the empirical distributions of gene expressions obtained under varying experimental situations each of which providing relatively large number of samples for hypothesis testing. All data were obtained from either of two microarray platforms - the commercial Affymetrix mouse 430.2 platform and a non-commercial Rosetta/Merck one. The data from each platform were preprocessed in the same manner. Conclusions The null hypotheses for goodness of fit for all considered univariate theoretical probability distributions (including the Normal distribution) are rejected for more than 50% of probe sets on the Affymetrix microarray platform at a 95% confidence level, suggesting that under the tested conditions a priori assumption of any of these distributions across all probe sets is not valid. The pattern of null hypotheses rejection was different for the data from Rosetta/Merck platform with only around 20% of the probe sets failing the logistic distribution goodness-of-fit test. We find that there are statistically significant (at 95% confidence level based on the F-test for the fitted linear model) relationships between the mean and the logarithm of the coefficient of variation of the distributions of the logarithm of gene expressions. An additional novel statistically significant quadratic relationship between the skewness and kurtosis is identified. Data from both microarray platforms fail to identify with any one of the chosen theoretical probability distributions from an analysis of the l-moment ratio diagram.
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Affiliation(s)
- Reuben Thomas
- Department of Industrial Engineering and Management Sciences, Northwestern University, Evanston, IL, USA.
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19
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Nishijo K, Chen QR, Zhang L, McCleish AT, Rodriguez A, Cho MJ, Prajapati SI, Gelfond JAL, Chisholm GB, Michalek JE, Aronow BJ, Barr FG, Randall RL, Ladanyi M, Qualman SJ, Rubin BP, LeGallo RD, Wang C, Khan J, Keller C. Credentialing a preclinical mouse model of alveolar rhabdomyosarcoma. Cancer Res 2009; 69:2902-11. [PMID: 19339268 DOI: 10.1158/0008-5472.can-08-3723] [Citation(s) in RCA: 70] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The highly aggressive muscle cancer alveolar rhabdomyosarcoma (ARMS) is one of the most common soft tissue sarcoma of childhood, yet the outcome for the unresectable and metastatic disease is dismal and unchanged for nearly three decades. To better understand the pathogenesis of this disease and to facilitate novel preclinical approaches, we previously developed a conditional mouse model of ARMS by faithfully recapitulating the genetic mutations observed in the human disease, i.e., activation of Pax3:Fkhr fusion gene with either p53 or Cdkn2a inactivation. In this report, we show that this model recapitulates the immunohistochemical profile and the rapid progression of the human disease. We show that Pax3:Fkhr expression increases during late preneoplasia but tumor cells undergoing metastasis are under apparent selection for Pax3:Fkhr expression. At a whole-genome level, a cross-species gene set enrichment analysis and metagene projection study showed that our mouse model is most similar to human ARMS when compared with other pediatric cancers. We have defined an expression profile conserved between mouse and human ARMS, as well as a Pax3:Fkhr signature, including the target gene, SKP2. We further identified 7 "druggable" kinases overexpressed across species. The data affirm the accuracy of this genetically engineered mouse model.
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Affiliation(s)
- Koichi Nishijo
- Greehey Children's Cancer Research Institute, University of Texas Health Science Center, San Antonio, Texas, USA
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20
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Sáenz A, Azpitarte M, Armañanzas R, Leturcq F, Alzualde A, Inza I, García-Bragado F, De la Herran G, Corcuera J, Cabello A, Navarro C, De la Torre C, Gallardo E, Illa I, López de Munain A. Gene expression profiling in limb-girdle muscular dystrophy 2A. PLoS One 2008; 3:e3750. [PMID: 19015733 PMCID: PMC2582180 DOI: 10.1371/journal.pone.0003750] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2008] [Accepted: 10/25/2008] [Indexed: 11/18/2022] Open
Abstract
Limb-girdle muscular dystrophy type 2A (LGMD2A) is a recessive genetic disorder caused by mutations in calpain 3 (CAPN3). Calpain 3 plays different roles in muscular cells, but little is known about its functions or in vivo substrates. The aim of this study was to identify the genes showing an altered expression in LGMD2A patients and the possible pathways they are implicated in. Ten muscle samples from LGMD2A patients with in which molecular diagnosis was ascertained were investigated using array technology to analyze gene expression profiling as compared to ten normal muscle samples. Upregulated genes were mostly those related to extracellular matrix (different collagens), cell adhesion (fibronectin), muscle development (myosins and melusin) and signal transduction. It is therefore suggested that different proteins located or participating in the costameric region are implicated in processes regulated by calpain 3 during skeletal muscle development. Genes participating in the ubiquitin proteasome degradation pathway were found to be deregulated in LGMD2A patients, suggesting that regulation of this pathway may be under the control of calpain 3 activity. As frizzled-related protein (FRZB) is upregulated in LGMD2A muscle samples, it could be hypothesized that beta-catenin regulation is also altered at the Wnt signaling pathway, leading to an incorrect myogenesis. Conversely, expression of most transcription factor genes was downregulated (MYC, FOS and EGR1). Finally, the upregulation of IL-32 and immunoglobulin genes may induce the eosinophil chemoattraction explaining the inflammatory findings observed in presymptomatic stages. The obtained results try to shed some light on identification of novel therapeutic targets for limb-girdle muscular dystrophies.
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Affiliation(s)
- Amets Sáenz
- Experimental Unit, Hospital Donostia, Donostia-San Sebastián, Basque Country, Spain.
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21
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Jongjaroenprasert W, Chanprasertyotin S, Butadej S, Nakasatien S, Charatcharoenwitthaya N, Himathongkam T, Ongphiphadhanakul B. Association of genetic variants in GABRA3 gene and thyrotoxic hypokalaemic periodic paralysis in Thai population. Clin Endocrinol (Oxf) 2008; 68:646-51. [PMID: 17970773 DOI: 10.1111/j.1365-2265.2007.03083.x] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
BACKGROUND Genetic predisposition has been suggested to play role in the pathogenesis of thyrotoxic hypokalaemic periodic paralysis (THPP). OBJECTIVES In this study, we assessed the differences of single-nucleotide polymorphisms (SNP) allelic frequency between THPP patients and well-characterized controls in order to find the susceptibility genetic variants related to THPP using microarray-based assessments on pooled DNA. METHODS Fifty cases of THPP and 50 male hyperthyroid patients without hypokalaemia as controls were recruited. Equal amounts of individual genomic DNA were pooled from each group. Estimated allele frequencies of SNPs were derived by averaging relative allele signal score obtained by Affymetrix GeneChip(R) Mapping 10K Arrays. RESULTS Sixty-nine loci that display robust allele frequency differences between THPP and controls were identified. SNP rs750841 (A > T) in intron 3 of the gamma-aminobutyric acid (GABA) receptor alpha3 subunit (GABRA3) gene possessed the most significant difference in allele frequency (27% in THPP case and 5% in controls, P = 0.007). Actual allele frequencies obtained from genotyping in each individual were very similar to the estimated frequency from the pools (28% in THPP and 2% in controls, and P = 0.0002). Nearby DNA sequences of GABRA3 were sequenced and an additional two SNPs were found (A > C at exon 1 and G > T of rs12688128). Allele A of rs750841 and allele G of rs12688128 in intron 3 were predominantly found in THPP with significant genetic relative risk of 19 (P < 0.0002; 95%CI 2.4-151.6). CONCLUSIONS Whole-genome scanning on pooled DNA provides an accurate, useful screening tool for elucidating genetic underpinnings of THPP. SNPs at intron 3 of GABRA3 are found to be associated with THPP.
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Sáenz A, López de Munain A. Matrices de ADN: visión general y aplicaciones específicas. Med Clin (Barc) 2008; 130:504-9. [DOI: 10.1157/13119504] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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23
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Langenau DM, Keefe MD, Storer NY, Guyon JR, Kutok JL, Le X, Goessling W, Neuberg DS, Kunkel LM, Zon LI. Effects of RAS on the genesis of embryonal rhabdomyosarcoma. Genes Dev 2007; 21:1382-95. [PMID: 17510286 PMCID: PMC1877750 DOI: 10.1101/gad.1545007] [Citation(s) in RCA: 273] [Impact Index Per Article: 16.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2007] [Accepted: 04/03/2007] [Indexed: 02/07/2023]
Abstract
Embryonal rhabdomyosarcoma (ERMS) is a devastating cancer with specific features of muscle differentiation that can result from mutational activation of RAS family members. However, to date, RAS pathway activation has not been reported in a majority of ERMS patients. Here, we have created a zebrafish model of RAS-induced ERMS, in which animals develop externally visible tumors by 10 d of life. Microarray analysis and cross-species comparisons identified two conserved gene signatures found in both zebrafish and human ERMS, one associated with tumor-specific and tissue-restricted gene expression in rhabdomyosarcoma and a second comprising a novel RAS-induced gene signature. Remarkably, our analysis uncovered that RAS pathway activation is exceedingly common in human RMS. We also created a new transgenic coinjection methodology to fluorescently label distinct subpopulations of tumor cells based on muscle differentiation status. In conjunction with fluorescent activated cell sorting, cell transplantation, and limiting dilution analysis, we were able to identify the cancer stem cell in zebrafish ERMS. When coupled with gene expression studies of this cell population, we propose that the zebrafish RMS cancer stem cell shares similar self-renewal programs as those found in activated satellite cells.
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MESH Headings
- Adenosine Deaminase/genetics
- Animals
- Animals, Genetically Modified
- Biomarkers, Tumor/genetics
- Biomarkers, Tumor/metabolism
- Cell Differentiation
- Cell Transformation, Neoplastic
- Cells, Cultured
- DNA-Binding Proteins/genetics
- Embryo, Nonmammalian/cytology
- Embryo, Nonmammalian/metabolism
- Gene Expression Profiling
- Gene Expression Regulation, Developmental
- Genes, ras/physiology
- Humans
- In Situ Hybridization
- Kidney/cytology
- Kidney/metabolism
- Kidney/pathology
- Microinjections
- Muscle, Skeletal/cytology
- Muscle, Skeletal/metabolism
- Muscle, Skeletal/pathology
- Oligonucleotide Array Sequence Analysis
- RNA-Binding Proteins
- Rhabdomyosarcoma, Embryonal/etiology
- Rhabdomyosarcoma, Embryonal/genetics
- Rhabdomyosarcoma, Embryonal/pathology
- Zebrafish/genetics
- Zebrafish/metabolism
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Affiliation(s)
- David M. Langenau
- Stem Cell Program and Division of Hematology/Oncology, Children’s Hospital Boston and Dana-Farber Cancer Institute, Boston, Massachusetts 02115, USA
| | - Matthew D. Keefe
- Stem Cell Program and Division of Hematology/Oncology, Children’s Hospital Boston and Dana-Farber Cancer Institute, Boston, Massachusetts 02115, USA
| | - Narie Y. Storer
- Stem Cell Program and Division of Hematology/Oncology, Children’s Hospital Boston and Dana-Farber Cancer Institute, Boston, Massachusetts 02115, USA
| | - Jeffrey R. Guyon
- Program in Genomics and Howard Hughes Medical Institute at Children’s Hospital Boston, Boston, Massachusetts 02115, USA
| | - Jeffery L. Kutok
- Department of Pathology, Brigham and Women’s Hospital, Boston, Massachusetts 02115, USA
| | - Xiuning Le
- Stem Cell Program and Division of Hematology/Oncology, Children’s Hospital Boston and Dana-Farber Cancer Institute, Boston, Massachusetts 02115, USA
| | - Wolfram Goessling
- Stem Cell Program and Division of Hematology/Oncology, Children’s Hospital Boston and Dana-Farber Cancer Institute, Boston, Massachusetts 02115, USA
| | | | - Louis M. Kunkel
- Program in Genomics and Howard Hughes Medical Institute at Children’s Hospital Boston, Boston, Massachusetts 02115, USA
| | - Leonard I. Zon
- Stem Cell Program and Division of Hematology/Oncology, Children’s Hospital Boston and Dana-Farber Cancer Institute, Boston, Massachusetts 02115, USA
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24
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Sanoudou D, Corbett MA, Han M, Ghoddusi M, Nguyen MAT, Vlahovich N, Hardeman EC, Beggs AH. Skeletal muscle repair in a mouse model of nemaline myopathy. Hum Mol Genet 2006; 15:2603-12. [PMID: 16877500 PMCID: PMC3372923 DOI: 10.1093/hmg/ddl186] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Nemaline myopathy (NM), the most common non-dystrophic congenital myopathy, is a variably severe neuromuscular disorder for which no effective treatment is available. Although a number of genes have been identified in which mutations can cause NM, the pathogenetic mechanisms leading to the phenotypes are poorly understood. To address this question, we examined gene expression patterns in an NM mouse model carrying the human Met9Arg mutation of alpha-tropomyosin slow (Tpm3). We assessed five different skeletal muscles from affected mice, which are representative of muscles with differing fiber-type compositions, different physiological specializations and variable degrees of pathology. Although these same muscles in non-affected mice showed marked variation in patterns of gene expression, with diaphragm being the most dissimilar, the presence of the mutant protein in nemaline muscles resulted in a more similar pattern of gene expression among the muscles. This result suggests a common process or mechanism operating in nemaline muscles independent of the variable degrees of pathology. Transcriptional and protein expression data indicate the presence of a repair process and possibly delayed maturation in nemaline muscles. Markers indicative of satellite cell number, activated satellite cells and immature fibers including M-Cadherin, MyoD, desmin, Pax7 and Myf6 were elevated by western-blot analysis or immunohistochemistry. Evidence suggesting elevated focal repair was observed in nemaline muscle in electron micrographs. This analysis reveals that NM is characterized by a novel repair feature operating in multiple different muscles.
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Affiliation(s)
- Despina Sanoudou
- Program in Genomics and Genetics Division, Children’s Hospital Boston, Harvard Medical School, 300 Longwood Avenue, Boston, MA 02115, USA
- Molecular Biology Division, Foundation for Biomedical Research, Academy of Athens, Soranou Efesiou 4, Athens 115-27, Greece
| | - Mark A. Corbett
- Muscle Development Unit, Children’s Medical Research Institute, Locked Bag 23, Westmead, NSW 2145, Australia
| | - Mei Han
- Program in Genomics and Genetics Division, Children’s Hospital Boston, Harvard Medical School, 300 Longwood Avenue, Boston, MA 02115, USA
| | - Majid Ghoddusi
- Muscle Development Unit, Children’s Medical Research Institute, Locked Bag 23, Westmead, NSW 2145, Australia
| | - Mai-Anh T. Nguyen
- Muscle Development Unit, Children’s Medical Research Institute, Locked Bag 23, Westmead, NSW 2145, Australia
| | - Nicole Vlahovich
- Muscle Development Unit, Children’s Medical Research Institute, Locked Bag 23, Westmead, NSW 2145, Australia
| | - Edna C. Hardeman
- Muscle Development Unit, Children’s Medical Research Institute, Locked Bag 23, Westmead, NSW 2145, Australia
| | - Alan H. Beggs
- Program in Genomics and Genetics Division, Children’s Hospital Boston, Harvard Medical School, 300 Longwood Avenue, Boston, MA 02115, USA
- To whom correspondence should be addressed. Tel: +1 6179192170; Fax: +1 6177300253;
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Kho AT, Kang PB, Kohane IS, Kunkel LM. Transcriptome-scale similarities between mouse and human skeletal muscles with normal and myopathic phenotypes. BMC Musculoskelet Disord 2006; 7:23. [PMID: 16522209 PMCID: PMC1525166 DOI: 10.1186/1471-2474-7-23] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/14/2005] [Accepted: 03/07/2006] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Mouse and human skeletal muscle transcriptome profiles vary by muscle type, raising the question of which mouse muscle groups have the greatest molecular similarities to human skeletal muscle. METHODS Orthologous (whole, sub-) transcriptome profiles were compared among four mouse-human transcriptome datasets: (M) six muscle groups obtained from three mouse strains (wildtype, mdx, mdx5cv); (H1) biopsied human quadriceps from controls and Duchenne muscular dystrophy patients; (H2) four different control human muscle types obtained at autopsy; and (H3) 12 different control human tissues (ten non-muscle). RESULTS Of the six mouse muscles examined, mouse soleus bore the greatest molecular similarities to human skeletal muscles, independent of the latters' anatomic location/muscle type, disease state, age and sampling method (autopsy versus biopsy). Significant similarity to any one mouse muscle group was not observed for non-muscle human tissues (dataset H3), indicating this finding to be muscle specific. CONCLUSION This observation may be partly explained by the higher type I fiber content of soleus relative to the other mouse muscles sampled.
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Affiliation(s)
- Alvin T Kho
- Children's Hospital Informatics Program, Harvard-MIT Division of Health Sciences and Technology, Cambridge, Massachusetts, USA
- Program in Genomics, Children's Hospital Boston and Harvard Medical School, Boston, Massachusetts, USA
| | - Peter B Kang
- Program in Genomics, Children's Hospital Boston and Harvard Medical School, Boston, Massachusetts, USA
- Department of Neurology, Children's Hospital Boston and Harvard Medical School, Boston, Massachusetts, USA
| | - Isaac S Kohane
- Children's Hospital Informatics Program, Harvard-MIT Division of Health Sciences and Technology, Cambridge, Massachusetts, USA
| | - Louis M Kunkel
- Program in Genomics, Children's Hospital Boston and Harvard Medical School, Boston, Massachusetts, USA
- Howard Hughes Medical Institute, Children's Hospital Boston, Boston, Massachusetts, USA
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