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Ducommun S, Jannig PR, Cervenka I, Murgia M, Mittenbühler MJ, Chernogubova E, Dias JM, Jude B, Correia JC, Van Vranken JG, Ocana-Santero G, Porsmyr-Palmertz M, McCann Haworth S, Martínez-Redondo V, Liu Z, Carlström M, Mann M, Lanner JT, Teixeira AI, Maegdefessel L, Spiegelman BM, Ruas JL. Mustn1 is a smooth muscle cell-secreted microprotein that modulates skeletal muscle extracellular matrix composition. Mol Metab 2024; 82:101912. [PMID: 38458566 PMCID: PMC10950823 DOI: 10.1016/j.molmet.2024.101912] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/19/2023] [Revised: 02/21/2024] [Accepted: 03/04/2024] [Indexed: 03/10/2024] Open
Abstract
OBJECTIVE Skeletal muscle plasticity and remodeling are critical for adapting tissue function to use, disuse, and regeneration. The aim of this study was to identify genes and molecular pathways that regulate the transition from atrophy to compensatory hypertrophy or recovery from injury. Here, we have used a mouse model of hindlimb unloading and reloading, which causes skeletal muscle atrophy, and compensatory regeneration and hypertrophy, respectively. METHODS We analyzed mouse skeletal muscle at the transition from hindlimb unloading to reloading for changes in transcriptome and extracellular fluid proteome. We then used qRT-PCR, immunohistochemistry, and bulk and single-cell RNA sequencing data to determine Mustn1 gene and protein expression, including changes in gene expression in mouse and human skeletal muscle with different challenges such as exercise and muscle injury. We generated Mustn1-deficient genetic mouse models and characterized them in vivo and ex vivo with regard to muscle function and whole-body metabolism. We isolated smooth muscle cells and functionally characterized them, and performed transcriptomics and proteomics analysis of skeletal muscle and aorta of Mustn1-deficient mice. RESULTS We show that Mustn1 (Musculoskeletal embryonic nuclear protein 1, also known as Mustang) is highly expressed in skeletal muscle during the early stages of hindlimb reloading. Mustn1 expression is transiently elevated in mouse and human skeletal muscle in response to intense exercise, resistance exercise, or injury. We find that Mustn1 expression is highest in smooth muscle-rich tissues, followed by skeletal muscle fibers. Muscle from heterozygous Mustn1-deficient mice exhibit differences in gene expression related to extracellular matrix and cell adhesion, compared to wild-type littermates. Mustn1-deficient mice have normal muscle and aorta function and whole-body glucose metabolism. We show that Mustn1 is secreted from smooth muscle cells, and that it is present in arterioles of the muscle microvasculature and in muscle extracellular fluid, particularly during the hindlimb reloading phase. Proteomics analysis of muscle from Mustn1-deficient mice confirms differences in extracellular matrix composition, and female mice display higher collagen content after chemically induced muscle injury compared to wild-type littermates. CONCLUSIONS We show that, in addition to its previously reported intracellular localization, Mustn1 is a microprotein secreted from smooth muscle cells into the muscle extracellular space. We explore its role in muscle ECM deposition and remodeling in homeostasis and upon muscle injury. The role of Mustn1 in fibrosis and immune infiltration upon muscle injury and dystrophies remains to be investigated, as does its potential for therapeutic interventions.
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Affiliation(s)
- Serge Ducommun
- Molecular and Cellular Exercise Physiology, Department of Physiology and Pharmacology, Biomedicum, Karolinska Institutet, 171 77 Stockholm, Sweden
| | - Paulo R Jannig
- Molecular and Cellular Exercise Physiology, Department of Physiology and Pharmacology, Biomedicum, Karolinska Institutet, 171 77 Stockholm, Sweden
| | - Igor Cervenka
- Molecular and Cellular Exercise Physiology, Department of Physiology and Pharmacology, Biomedicum, Karolinska Institutet, 171 77 Stockholm, Sweden
| | - Marta Murgia
- Department of Biomedical Sciences, University of Padova, Via Ugo Bassi, 58/B, 35131 Padua, Italy; Max-Planck-Institute of Biochemistry, Am Klopferspitz 18, 82152 Martinsried, Germany
| | - Melanie J Mittenbühler
- Department of Cancer Biology, Dana-Farber Cancer Institute, Boston, MA 02115, USA; Department of Cell Biology, Harvard Medical School, Boston, MA 02115, USA
| | - Ekaterina Chernogubova
- Department of Medicine, Cardiovascular Unit, Karolinska Institutet, 171 77 Stockholm, Sweden
| | - José M Dias
- Department of Cell and Molecular Biology, Biomedicum, Karolinska Institutet, 171 77 Stockholm, Sweden; Nanomedicine and Spatial Biology, Department of Physiology and Pharmacology, Biomedicum, Karolinska Institutet, 171 77 Stockholm, Sweden
| | - Baptiste Jude
- Molecular Muscle Physiology and Pathophysiology, Department of Physiology and Pharmacology, Biomedicum, Karolinska Institutet, 171 77 Stockholm, Sweden
| | - Jorge C Correia
- Molecular and Cellular Exercise Physiology, Department of Physiology and Pharmacology, Biomedicum, Karolinska Institutet, 171 77 Stockholm, Sweden
| | | | - Gabriel Ocana-Santero
- Molecular and Cellular Exercise Physiology, Department of Physiology and Pharmacology, Biomedicum, Karolinska Institutet, 171 77 Stockholm, Sweden
| | - Margareta Porsmyr-Palmertz
- Molecular and Cellular Exercise Physiology, Department of Physiology and Pharmacology, Biomedicum, Karolinska Institutet, 171 77 Stockholm, Sweden
| | - Sarah McCann Haworth
- Department of Physiology and Pharmacology, Biomedicum, Karolinska Institutet, 171 77 Stockholm, Sweden
| | - Vicente Martínez-Redondo
- Molecular and Cellular Exercise Physiology, Department of Physiology and Pharmacology, Biomedicum, Karolinska Institutet, 171 77 Stockholm, Sweden
| | - Zhengye Liu
- Molecular Muscle Physiology and Pathophysiology, Department of Physiology and Pharmacology, Biomedicum, Karolinska Institutet, 171 77 Stockholm, Sweden
| | - Mattias Carlström
- Department of Physiology and Pharmacology, Biomedicum, Karolinska Institutet, 171 77 Stockholm, Sweden
| | - Matthias Mann
- Max-Planck-Institute of Biochemistry, Am Klopferspitz 18, 82152 Martinsried, Germany
| | - Johanna T Lanner
- Molecular Muscle Physiology and Pathophysiology, Department of Physiology and Pharmacology, Biomedicum, Karolinska Institutet, 171 77 Stockholm, Sweden
| | - Ana I Teixeira
- Nanomedicine and Spatial Biology, Department of Physiology and Pharmacology, Biomedicum, Karolinska Institutet, 171 77 Stockholm, Sweden
| | - Lars Maegdefessel
- Department of Medicine, Cardiovascular Unit, Karolinska Institutet, 171 77 Stockholm, Sweden; Institute of Molecular Vascular Medicine, Klinikum rechts der Isar, Technical University of Munich, 81675 Munich, Germany; German Center for Cardiovascular Research DZHK, Partner Site Munich Heart Alliance, 10785 Berlin, Germany
| | - Bruce M Spiegelman
- Department of Cancer Biology, Dana-Farber Cancer Institute, Boston, MA 02115, USA; Department of Cell Biology, Harvard Medical School, Boston, MA 02115, USA
| | - Jorge L Ruas
- Molecular and Cellular Exercise Physiology, Department of Physiology and Pharmacology, Biomedicum, Karolinska Institutet, 171 77 Stockholm, Sweden; Department of Pharmacology and Stanley and Judith Frankel Institute for Heart & Brain Health, University of Michigan Medical School, Ann Arbor, MI 48109, USA.
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Schiaffino S, Hughes SM, Murgia M, Reggiani C. MYH13, a superfast myosin expressed in extraocular, laryngeal and syringeal muscles. J Physiol 2024; 602:427-443. [PMID: 38160435 DOI: 10.1113/jp285714] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2023] [Accepted: 11/28/2023] [Indexed: 01/03/2024] Open
Abstract
MYH13 is a unique type of sarcomeric myosin heavy chain (MYH) first detected in mammalian extraocular (EO) muscles and later also in vocal muscles, including laryngeal muscles of some mammals and syringeal muscles of songbirds. All these muscles are specialized in generating very fast contractions while producing relatively low force, a design appropriate for muscles acting against a much lower load than most skeletal muscles inserting into the skeleton. The definition of the physiological properties of muscle fibres containing MYH13 has been complicated by the mixed fibre type composition of EO muscles and the coexistence of different MYH types within the same fibre. A major advance in this area came from studies on isolated recombinant myosin motors and the demonstration that the affinity of actin-bound human MYH13 for ADP is much weaker than those of fast-type MYH1 (type 2X) and MYH2 (type 2A). This property is consistent with a very fast detachment of myosin from actin, a major determinant of shortening velocity. The MYH13 gene arose early during vertebrate evolution but was characterized only in mammals and birds and appears to have been lost in some teleost fish. The MYH13 gene is located at the 3' end of the mammalian fast/developmental gene cluster and in a similar position to the orthologous cluster in syntenic regions of the songbird genome. MYH13 gene regulation is controlled by a super-enhancer in the mammalian locus and deletion of the neighbouring fast MYH1 and MYH4 genes leads to abnormal MYH13 expression in mouse leg muscles.
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Affiliation(s)
| | - Simon M Hughes
- Randall Centre for Cell and Molecular Biophysics, School of Basic and Medical Biosciences, King's College, London, UK
| | - Marta Murgia
- Department of Biomedical Sciences, University of Padova, Padua, Italy
- Max-Planck-Institute of Biochemistry, Martinsried, Germany
| | - Carlo Reggiani
- Department of Biomedical Sciences, University of Padova, Padua, Italy
- Science and Research Center Koper, Institute for Kinesiology Research, Koper, Slovenia
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Reggiani C, Murgia M. Comment on "Fiber-type traps: revisiting common misconceptions about skeletal muscle fiber types with application to motor control, biomechanics, physiology, and biology". J Appl Physiol (1985) 2024; 136:437-438. [PMID: 38353629 DOI: 10.1152/japplphysiol.00008.2024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2024] [Accepted: 01/04/2024] [Indexed: 02/16/2024] Open
Affiliation(s)
- Carlo Reggiani
- Department of Biomedical Sciences, University of Padova, Padua, Italy
- Science and Research Center Koper, Institute for Kinesiology Research, Koper, Slovenia
| | - Marta Murgia
- Department of Biomedical Sciences, University of Padova, Padua, Italy
- Max-Planck-Institute of Biochemistry, Martinsried, Germany
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Serrano N, Hyatt JPK, Houmard JA, Murgia M, Katsanos CS. Muscle fiber phenotype: a culprit of abnormal metabolism and function in skeletal muscle of humans with obesity. Am J Physiol Endocrinol Metab 2023; 325:E723-E733. [PMID: 37877797 PMCID: PMC10864022 DOI: 10.1152/ajpendo.00190.2023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/23/2023] [Revised: 10/23/2023] [Accepted: 10/23/2023] [Indexed: 10/26/2023]
Abstract
The proportion of the different types of fibers in a given skeletal muscle contributes to its overall metabolic and functional characteristics. Greater proportion of type I muscle fibers is associated with favorable oxidative metabolism and function of the muscle. Humans with obesity have a lower proportion of type I muscle fibers. We discuss how lower proportion of type I fibers in skeletal muscle of humans with obesity may explain metabolic and functional abnormalities reported in these individuals. These include lower muscle glucose disposal rate, mitochondrial content, protein synthesis, and quality/contractile function, as well as increased risk for heart disease, lower levels of physical activity, and propensity for weight gain/resistance to weight loss. We delineate future research directions and the need to examine hybrid muscle fiber populations, which are indicative of a transitory state of fiber phenotype within skeletal muscle. We also describe methodologies for precisely characterizing muscle fibers and gene expression at the single muscle fiber level to enhance our understanding of the regulation of muscle fiber phenotype in obesity. By contextualizing research in the field of muscle fiber type in obesity, we lay a foundation for future advancements and pave the way for translation of this knowledge to address impaired metabolism and function in obesity.
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Affiliation(s)
- Nathan Serrano
- School of Life Sciences, Arizona State University, Tempe, Arizona, United States
| | - Jon-Philippe K Hyatt
- College of Integrative Sciences and Arts, Arizona State University, Tempe, Arizona, United States
| | - Joseph A Houmard
- Department of Kinesiology, Human Performance Laboratory, East Carolina University, Greenville, North Carolina, United States
| | - Marta Murgia
- Department of Biomedical Sciences, University of Padova, Padua, Italy
- Department of Proteomics and Signal Transduction, Max-Planck-Institute of Biochemistry, Martinsried, Germany
| | - Christos S Katsanos
- School of Life Sciences, Arizona State University, Tempe, Arizona, United States
- Department of Physiology and Biomedical Engineering, Mayo Clinic-Arizona, Phoenix, Arizona, United States
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Bekeova C, Han JI, Xu H, Kerr E, Blackburne B, Lynch SC, Mesaros C, Murgia M, Vadigepalli R, Beld J, Leonardi R, Snyder NW, Seifert EL. Acyl-CoA thioesterase-2 facilitates β-oxidation in glycolytic skeletal muscle in a lipid supply dependent manner. bioRxiv 2023:2023.06.27.546724. [PMID: 37425757 PMCID: PMC10327053 DOI: 10.1101/2023.06.27.546724] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/11/2023]
Abstract
Acyl-Coenzyme A (acyl-CoA) thioesters are compartmentalized intermediates that participate in in multiple metabolic reactions within the mitochondrial matrix. The limited availability of free CoA (CoASH) in the matrix raises the question of how the local acyl-CoA concentration is regulated to prevent trapping of CoASH from overload of any specific substrate. Acyl-CoA thioesterase-2 (ACOT2) hydrolyzes long-chain acyl-CoAs to their constituent fatty acids and CoASH, and is the only mitochondrial matrix ACOT refractory to inhibition by CoASH. Thus, we reasoned that ACOT2 may constitutively regulate matrix acyl-CoA levels. Acot2 deletion in murine skeletal muscle (SM) resulted in acyl-CoA build-up when lipid supply and energy demands were modest. When energy demand and pyruvate availability were elevated, lack of ACOT2 activity promoted glucose oxidation. This preference for glucose over fatty acid oxidation was recapitulated in C2C12 myotubes with acute depletion of Acot2 , and overt inhibition of β-oxidation was demonstrated in isolated mitochondria from Acot2 -depleted glycolytic SM. In mice fed a high fat diet, ACOT2 enabled the accretion of acyl-CoAs and ceramide derivatives in glycolytic SM, and this was associated with worse glucose homeostasis compared to when ACOT2 was absent. These observations suggest that ACOT2 supports CoASH availability to facilitate β-oxidation in glycolytic SM when lipid supply is modest. However, when lipid supply is high, ACOT2 enables acyl-CoA and lipid accumulation, CoASH sequestration, and poor glucose homeostasis. Thus, ACOT2 regulates matrix acyl-CoA concentration in glycolytic muscle, and its impact depends on lipid supply.
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Murgia M, Brocca L, Monti E, Franchi MV, Zwiebel M, Steigerwald S, Giacomello E, Sartori R, Zampieri S, Capovilla G, Gasparini M, Biolo G, Sandri M, Mann M, Narici MV. Plasma proteome profiling of healthy subjects undergoing bed rest reveals unloading-dependent changes linked to muscle atrophy. J Cachexia Sarcopenia Muscle 2023; 14:439-451. [PMID: 36517414 PMCID: PMC9891930 DOI: 10.1002/jcsm.13146] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/12/2022] [Revised: 11/04/2022] [Accepted: 11/10/2022] [Indexed: 12/23/2022] Open
Abstract
BACKGROUND Inactivity and unloading induce skeletal muscle atrophy, loss of strength and detrimental metabolic effects. Bed rest is a model to study the impact of inactivity on the musculoskeletal system. It not only provides information for bed-ridden patients care, but it is also a ground-based spaceflight analogue used to mimic the challenges of long space missions for the human body. In both cases, it would be desirable to develop a panel of biomarkers to monitor muscle atrophy in a minimally invasive way at point of care to limit the onset of muscle loss in a personalized fashion. METHODS We applied mass spectrometry-based proteomics to measure plasma protein abundance changes in response to 10 days of bed rest in 10 young males. To validate the correlation between muscle atrophy and the significant hits emerging from our study, we analysed in parallel, with the same pipeline, a cohort of cancer patients with or without cachexia and age-matched controls. Our analysis resulted in the quantification of over 500 proteins. RESULTS Unloading affected plasma concentration of proteins of the complement cascade, lipid carriers and proteins derived from tissue leakage. Among the latter, teneurin-4 increased 1.6-fold in plasma at bed rest day 10 (BR10) compared with BR0 (6.E9 vs. 4.3E9, P = 0.02) and decreased to 0.6-fold the initial abundance after 2 days of recovery at normal daily activity (R + 2, 2.7E9, P = 3.3E-4); the extracellular matrix protein lumican was decreased to 0.7-fold (1.2E9 vs. 8.5E8, P = 1.5E-4) at BR10 and remained as low at R + 2. We identified six proteins distinguishing subjects developing unloading-mediated muscle atrophy (decrease of >4% of quadriceps cross-sectional area) from those largely maintaining their initial muscle mass. Among them, transthyretin, a thyroid hormone-binding protein, was significantly less abundant at BR10 in the plasma of subjects with muscle atrophy compared with those with no atrophy (1.6E10 vs. 2.6E10, P = 0.001). Haptoglobin-related protein was also significantly reduced in the serum of cancer patients with cachexia compared with that of controls. CONCLUSIONS Our findings highlight a combination or proteomic changes that can be explored as potential biomarkers of muscle atrophy occurring under different conditions. The panel of significant proteomic differences distinguishing atrophy-prone and atrophy-resistant subjects after 10 days of bed rest need to be tested in a larger cohort to validate their potential to predict inactivity-triggered muscle loss in humans.
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Affiliation(s)
- Marta Murgia
- Department of Biomedical Sciences, University of Padova, Padua, Italy.,Max-Planck-Institute of Biochemistry, Martinsried, Germany
| | - Lorenza Brocca
- Department of Molecular Medicine, University of Pavia, Pavia, Italy
| | - Elena Monti
- Department of Biomedical Sciences, University of Padova, Padua, Italy
| | - Martino V Franchi
- Department of Biomedical Sciences, University of Padova, Padua, Italy.,CIR-MYO Myology Center, Padua, Italy
| | | | | | - Emiliana Giacomello
- Department of Medicine, Surgery and Health Sciences, University of Trieste, Trieste, Italy
| | - Roberta Sartori
- Department of Biomedical Sciences, University of Padova, Padua, Italy.,Veneto Institute of Molecular Medicine, Padova, Italy
| | - Sandra Zampieri
- Department of Biomedical Sciences, University of Padova, Padua, Italy.,CIR-MYO Myology Center, Padua, Italy.,Department of Surgical, Oncological and Gastroenterological Sciences, Padova University Hospital, Padua, Italy
| | - Giovanni Capovilla
- Department of Surgical, Oncological and Gastroenterological Sciences, Padova University Hospital, Padua, Italy
| | | | - Gianni Biolo
- Department of Medicine, Surgery and Health Sciences, University of Trieste, Trieste, Italy
| | - Marco Sandri
- Department of Biomedical Sciences, University of Padova, Padua, Italy.,Veneto Institute of Molecular Medicine, Padova, Italy
| | - Matthias Mann
- Max-Planck-Institute of Biochemistry, Martinsried, Germany.,NNF Center for Protein Research, Faculty of Health Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Marco V Narici
- Department of Biomedical Sciences, University of Padova, Padua, Italy.,CIR-MYO Myology Center, Padua, Italy
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Kuhnen G, Guedes Russomanno T, Murgia M, Pillon NJ, Schönfelder M, Wackerhage H. Genes Whose Gain or Loss of Function Changes Type 1, 2A, 2X, or 2B Muscle Fibre Proportions in Mice—A Systematic Review. Int J Mol Sci 2022; 23:ijms232112933. [PMID: 36361732 PMCID: PMC9658117 DOI: 10.3390/ijms232112933] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2022] [Revised: 10/16/2022] [Accepted: 10/18/2022] [Indexed: 11/25/2022] Open
Abstract
Adult skeletal muscle fibres are classified as type 1, 2A, 2X, and 2B. These classifications are based on the expression of the dominant myosin heavy chain isoform. Muscle fibre-specific gene expression and proportions of muscle fibre types change during development and in response to exercise, chronic electrical stimulation, or inactivity. To identify genes whose gain or loss-of-function alters type 1, 2A, 2X, or 2B muscle fibre proportions in mice, we conducted a systematic review of transgenic mouse studies. The systematic review was conducted in accordance with the 2009 PRISMA guidelines and the PICO framework. We identified 25 “muscle fibre genes” (Akirin1, Bdkrb2, Bdnf, Camk4, Ccnd3, Cpt1a, Epas1, Esrrg, Foxj3, Foxo1, Il15, Mapk12, Mstn, Myod1, Ncor1, Nfatc1, Nol3, Ppargc1a, Ppargc1b, Sirt1, Sirt3, Thra, Thrb, Trib3, and Vgll2) whose gain or loss-of-function significantly changes type 1, 2A, 2X or 2B muscle fibre proportions in mice. The fact that 15 of the 25 muscle fibre genes are transcriptional regulators suggests that muscle fibre-specific gene expression is primarily regulated transcriptionally. A reanalysis of existing datasets revealed that the expression of Ppargc1a and Vgll2 increases and Mstn decreases after exercise, respectively. This suggests that these genes help to regulate the muscle fibre adaptation to exercise. Finally, there are many known DNA sequence variants of muscle fibre genes. It seems likely that such DNA sequence variants contribute to the large variation of muscle fibre type proportions in the human population.
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Affiliation(s)
- Gabryela Kuhnen
- Department of Sports and Health Sciences, Technical University of Munich, 80809 Munich, Germany
| | - Tiago Guedes Russomanno
- Department of Sports and Health Sciences, Technical University of Munich, 80809 Munich, Germany
| | - Marta Murgia
- Max Planck Institute, Martinsried, 82152 Munich, Germany
- Department of Biomedical Sciences, University of Padova, Via Ugo Bassi, 58/B, 35131 Padua, Italy
| | - Nicolas J Pillon
- Department of Physiology and Pharmacology, Karolinska Institutet, 171 77 Stockholm, Sweden
| | - Martin Schönfelder
- Department of Sports and Health Sciences, Technical University of Munich, 80809 Munich, Germany
| | - Henning Wackerhage
- Department of Sports and Health Sciences, Technical University of Munich, 80809 Munich, Germany
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Murgia M, Ciciliot S, Nagaraj N, Reggiani C, Schiaffino S, Franchi MV, Pišot R, Šimunič B, Toniolo L, Blaauw B, Sandri M, Biolo G, Flück M, Narici MV, Mann M. Signatures of muscle disuse in spaceflight and bed rest revealed by single muscle fiber proteomics. PNAS Nexus 2022; 1:pgac086. [PMID: 36741463 PMCID: PMC9896895 DOI: 10.1093/pnasnexus/pgac086] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/28/2022] [Accepted: 06/07/2022] [Indexed: 02/07/2023]
Abstract
Astronauts experience dramatic loss of muscle mass, decreased strength, and insulin resistance, despite performing daily intense physical exercise that would lead to muscle growth on Earth. Partially mimicking spaceflight, prolonged bed rest causes muscle atrophy, loss of force, and glucose intolerance. To unravel the underlying mechanisms, we employed highly sensitive single fiber proteomics to detail the molecular remodeling caused by unloading and inactivity during bed rest and changes of the muscle proteome of astronauts before and after a mission on the International Space Station. Muscle focal adhesions, involved in fiber-matrix interaction and insulin receptor stabilization, are prominently downregulated in both bed rest and spaceflight and restored upon reloading. Pathways of antioxidant response increased strongly in slow but not in fast muscle fibers. Unloading alone upregulated markers of neuromuscular damage and the pathway controlling EIF5A hypusination. These proteomic signatures of mechanical unloading in muscle fiber subtypes contribute to disentangle the effect of microgravity from the pleiotropic challenges of spaceflight.
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Affiliation(s)
| | - Stefano Ciciliot
- Veneto Institute of Molecular Medicine, Via Orus 2, 35129 Padua, Italy,Department of Molecular Medicine, University of Pavia, Via Forlanini 6, 27100 Pavia, Italy
| | | | - Carlo Reggiani
- Department of Biomedical Sciences, University of Padova, Via Ugo Bassi, 58/B, 35131 Padua, Italy,Science and Research Center Koper, Institute for Kinesiology Research, Garibaldijeva Street 1, 6000 Koper, Slovenia
| | | | - Martino V Franchi
- Department of Biomedical Sciences, University of Padova, Via Ugo Bassi, 58/B, 35131 Padua, Italy
| | - Rado Pišot
- Science and Research Center Koper, Institute for Kinesiology Research, Garibaldijeva Street 1, 6000 Koper, Slovenia
| | - Boštjan Šimunič
- Science and Research Center Koper, Institute for Kinesiology Research, Garibaldijeva Street 1, 6000 Koper, Slovenia
| | - Luana Toniolo
- Department of Biomedical Sciences, University of Padova, Via Ugo Bassi, 58/B, 35131 Padua, Italy
| | - Bert Blaauw
- Department of Biomedical Sciences, University of Padova, Via Ugo Bassi, 58/B, 35131 Padua, Italy,Veneto Institute of Molecular Medicine, Via Orus 2, 35129 Padua, Italy
| | - Marco Sandri
- Department of Biomedical Sciences, University of Padova, Via Ugo Bassi, 58/B, 35131 Padua, Italy,Veneto Institute of Molecular Medicine, Via Orus 2, 35129 Padua, Italy
| | - Gianni Biolo
- Clinical Department of Medical, Surgical and Health Sciences, Strada di Fiume 447, 34149 Trieste, Italy
| | - Martin Flück
- Department of Medicine, University of Fribourg, Chemin du Musee 5, 1700 Fribourg, Switzerland
| | - Marco V Narici
- Department of Biomedical Sciences, University of Padova, Via Ugo Bassi, 58/B, 35131 Padua, Italy,Science and Research Center Koper, Institute for Kinesiology Research, Garibaldijeva Street 1, 6000 Koper, Slovenia,CIR-MYO Myology Center, Viale G Colombo 3, 35121 Padua, Italy
| | - Matthias Mann
- Max-Planck-Institute of Biochemistry, Am Klopferspitz 18, 82152 Martinsried, Germany,NNF Center for Protein Research, Faculty of Health Sciences, University of Copenhagen, Blegdamsvej 3B, Building 6.1, 2200 Copenhagen, Denmark
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Fan Y, Murgia M, Linder MI, Mizoguchi Y, Wang C, Łyszkiewicz M, Ziȩtara N, Liu Y, Frenz S, Sciuccati G, Partida-Gaytan A, Alizadeh Z, Rezaei N, Rehling P, Dennerlein S, Mann M, Klein C. HAX1-dependent control of mitochondrial proteostasis governs neutrophil granulocyte differentiation. J Clin Invest 2022; 132:153153. [PMID: 35499078 PMCID: PMC9057593 DOI: 10.1172/jci153153] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2021] [Accepted: 03/10/2022] [Indexed: 01/18/2023] Open
Abstract
The relevance of molecular mechanisms governing mitochondrial proteostasis to the differentiation and function of hematopoietic and immune cells is largely elusive. Through dissection of the network of proteins related to HCLS1-associated protein X-1, we defined a potentially novel functional CLPB/HAX1/(PRKD2)/HSP27 axis with critical importance for the differentiation of neutrophil granulocytes and, thus, elucidated molecular and metabolic mechanisms underlying congenital neutropenia in patients with HAX1 deficiency as well as bi- and monoallelic mutations in CLPB. As shown by stable isotope labeling by amino acids in cell culture (SILAC) proteomics, CLPB and HAX1 control the balance of mitochondrial protein synthesis and persistence crucial for proper mitochondrial function. Impaired mitochondrial protein dynamics are associated with decreased abundance of the serine-threonine kinase PRKD2 and HSP27 phosphorylated on serines 78 and 82. Cellular defects in HAX1–/– cells can be functionally reconstituted by HSP27. Thus, mitochondrial proteostasis emerges as a critical molecular and metabolic mechanism governing the differentiation and function of neutrophil granulocytes.
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Affiliation(s)
- Yanxin Fan
- Department of Pediatrics, Dr. von Hauner Children’s Hospital and Gene Center, University Hospital, Ludwig-Maximilians-Universität (LMU), Munich, Germany
| | - Marta Murgia
- Department of Proteomics and Signal Transduction, Max Planck Institute of Biochemistry, Martinsried, Germany
- Department of Biomedical Sciences, University of Padua, Padua, Italy
| | - Monika I. Linder
- Department of Pediatrics, Dr. von Hauner Children’s Hospital and Gene Center, University Hospital, Ludwig-Maximilians-Universität (LMU), Munich, Germany
| | - Yoko Mizoguchi
- Department of Pediatrics, Dr. von Hauner Children’s Hospital and Gene Center, University Hospital, Ludwig-Maximilians-Universität (LMU), Munich, Germany
| | - Cong Wang
- Department of Cellular Biochemistry, University Medical Center Goettingen, Goettingen, Germany
| | - Marcin Łyszkiewicz
- Department of Pediatrics, Dr. von Hauner Children’s Hospital and Gene Center, University Hospital, Ludwig-Maximilians-Universität (LMU), Munich, Germany
| | - Natalia Ziȩtara
- Department of Pediatrics, Dr. von Hauner Children’s Hospital and Gene Center, University Hospital, Ludwig-Maximilians-Universität (LMU), Munich, Germany
| | - Yanshan Liu
- Department of Pediatrics, Dr. von Hauner Children’s Hospital and Gene Center, University Hospital, Ludwig-Maximilians-Universität (LMU), Munich, Germany
| | - Stephanie Frenz
- Department of Pediatrics, Dr. von Hauner Children’s Hospital and Gene Center, University Hospital, Ludwig-Maximilians-Universität (LMU), Munich, Germany
| | - Gabriela Sciuccati
- Hematology and Oncology Department, Hospital de Pediatria “Prof. Dr. J.P. Garrahan,” Buenos Aires, Argentina
| | - Armando Partida-Gaytan
- Unidad de Investigación en Inmunodeficiencias Primarias, Instituto Nacional de Pediatría, Mexico City, Mexico
| | | | - Nima Rezaei
- Research Center for Immunodeficiencies, Children’s Medical Center, Tehran University of Medical Sciences, Tehran, Iran
| | - Peter Rehling
- Department of Cellular Biochemistry, University Medical Center Goettingen, Goettingen, Germany
- Cluster of Excellence “Multiscale Bioimaging: From Molecular Machines to Networks of Excitable Cells,” University of Goettingen, Goettingen, Germany
- Max Planck Institute for Biophysical Chemistry, Goettingen, Germany
| | - Sven Dennerlein
- Department of Cellular Biochemistry, University Medical Center Goettingen, Goettingen, Germany
| | - Matthias Mann
- Department of Proteomics and Signal Transduction, Max Planck Institute of Biochemistry, Martinsried, Germany
| | - Christoph Klein
- Department of Pediatrics, Dr. von Hauner Children’s Hospital and Gene Center, University Hospital, Ludwig-Maximilians-Universität (LMU), Munich, Germany
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10
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D’Alessandro G, Barbarava E, Battistelli E, de Bernardis P, Cacciotti F, Capalbo V, Carretti E, Columbro F, Coppolecchia A, Cruciani A, De Petris M, Govoni F, Isopi G, Lamagna L, Marongiu P, Masi S, Mele L, Molinari M, Murgia M, Navarrini A, Orlati A, Paiella A, Pettinari G, Piacentini F, Pisanu T, Poppi S, Presta G, Radiconi F. Millimetric Sardinia radio Telescope Receiver based on Array of Lumped elements kids. EPJ Web Conf 2022. [DOI: 10.1051/epjconf/202225700012] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
MISTRAL is a millimetric camera working in the W-band (78–103 GHz) which will take data from the Sardinia Radio Telescope, the Italian 64-m radio telescope located 50 km form Cagliari, at 600m above the sea level, in Sardinia. It is being built as a facility instrument by the Sapienza University for INAF, that manages the radio telescope, under a PON contract. It will consist of a compact cryostat hosting the re–imaging optics, cooled at 4K, and a 408–pixel array of photon–noise limited lumped element kinetic inductance detectors fabricated at CNR-IFN and cooled at a base temperature lower than 300mK. MISTRAL will be able to investigate a long list of scientific targets spanning from extragalactic astrophysics to solar system science, with high angular resolution (~ 12 arcsec), including Sunyaev Zel’dovich effect measurements and the study of the Cosmic Web.
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11
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Barbarossa S, Murgia M, Orrù R, Cao G. Processing Conditions Optimization for the Synthesis and Consolidation of High-Entropy Diborides. Eurasian Chem Tech J 2021. [DOI: 10.18321/ectj1104] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
The fabrication by Spark Plasma Sintering (SPS) of bulk high entropy ceramics from powders obtained by Self-propagating High temperature Synthesis (SHS) is addressed in this work. The effect produced by the introduction of 1 wt.% of graphite to the powders before SPS is investigated under different temperature conditions. The final density and composition of sintered (Hf0.2Mo0.2Zr0.2Ti0.2Ta0.2)B2 and (Hf0.2Mo0.2Zr0.2Ti0.2Nb0.2)B2 ceramics are found to be negatively affected by the presence of oxide impurities in the powders. While product composition can be progressively improved when the temperature is increased from 1800 to 1950 °C, residual porosities remain relatively high if using additive-free powders. In contrast, the introduction of 1 wt.%C markedly allows for oxides elimination by carbothermal reduction mechanism. Products consolidation is correspondingly enhanced so that relative densities of about 97% are attained. Other than the latter effect, surface oxides removal also makes powders more reactive, thus the synthesis of single-phase products is promoted. In particular, fully homogeneous (Hf0.2Mo0.2Zr0.2Ti0.2Ta0.2)B2 ceramics are obtained at relatively lower temperature conditions (1850 °C).
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12
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Murgia M, Nogara L, Baraldo M, Reggiani C, Mann M, Schiaffino S. Protein profile of fiber types in human skeletal muscle: a single-fiber proteomics study. Skelet Muscle 2021; 11:24. [PMID: 34727990 PMCID: PMC8561870 DOI: 10.1186/s13395-021-00279-0] [Citation(s) in RCA: 48] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2021] [Accepted: 10/19/2021] [Indexed: 01/16/2023] Open
Abstract
BACKGROUND Human skeletal muscle is composed of three major fiber types, referred to as type 1, 2A, and 2X fibers. This heterogeneous cellular composition complicates the interpretation of studies based on whole skeletal muscle lysate. A single-fiber proteomics approach is required to obtain a fiber-type resolved quantitative information on skeletal muscle pathophysiology. METHODS Single fibers were dissected from vastus lateralis muscle biopsies of young adult males and processed for mass spectrometry-based single-fiber proteomics. We provide and analyze a resource dataset based on relatively pure fibers, containing at least 80% of either MYH7 (marker of slow type 1 fibers), MYH2 (marker of fast 2A fibers), or MYH1 (marker of fast 2X fibers). RESULTS In a dataset of more than 3800 proteins detected by single-fiber proteomics, we selected 404 proteins showing a statistically significant difference among fiber types. We identified numerous type 1 or 2X fiber type-specific protein markers, defined as proteins present at 3-fold or higher levels in these compared to other fiber types. In contrast, we could detect only two 2A-specific protein markers in addition to MYH2. We observed three other major patterns: proteins showing a differential distribution according to the sequence 1 > 2A > 2X or 2X > 2A > 1 and type 2-specific proteins expressed in 2A and 2X fibers at levels 3 times greater than in type 1 fibers. In addition to precisely quantifying known fiber type-specific protein patterns, our study revealed several novel features of fiber type specificity, including the selective enrichment of components of the dystrophin and integrin complexes, as well as microtubular proteins, in type 2X fibers. The fiber type-specific distribution of some selected proteins revealed by proteomics was validated by immunofluorescence analyses with specific antibodies. CONCLUSION We here show that numerous muscle proteins, including proteins whose function is unknown, are selectively enriched in specific fiber types, pointing to potential implications in muscle pathophysiology. This reinforces the notion that single-fiber proteomics, together with recently developed approaches to single-cell proteomics, will be instrumental to explore and quantify muscle cell heterogeneity.
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Affiliation(s)
- Marta Murgia
- Department of Biomedical Science, University of Padova, 35121, Padova, Italy.
- Department of Proteomics and Signal Transduction, Max-Planck-Institute of Biochemistry, Martinsried, Germany.
| | - Leonardo Nogara
- Department of Biomedical Science, University of Padova, 35121, Padova, Italy
- Venetian Institute of Molecular Medicine (VIMM), 35121, Padova, Italy
| | - Martina Baraldo
- Department of Biomedical Science, University of Padova, 35121, Padova, Italy
- Venetian Institute of Molecular Medicine (VIMM), 35121, Padova, Italy
| | - Carlo Reggiani
- Department of Biomedical Science, University of Padova, 35121, Padova, Italy
- Science and Research Center Koper, Institute for Kinesiology Research, 6000, Koper, Slovenia
| | - Matthias Mann
- Department of Proteomics and Signal Transduction, Max-Planck-Institute of Biochemistry, Martinsried, Germany
- NNF Center for Protein Research, Faculty of Health Sciences, University of Copenhagen, Copenhagen, Denmark
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13
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Elstner M, Olszewski K, Prokisch H, Klopstock T, Murgia M. Multi-Omics Approach to Mitochondrial DNA Damage in Human Muscle Fibers. Int J Mol Sci 2021; 22:ijms222011080. [PMID: 34681740 PMCID: PMC8537949 DOI: 10.3390/ijms222011080] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2021] [Revised: 10/05/2021] [Accepted: 10/10/2021] [Indexed: 11/16/2022] Open
Abstract
Mitochondrial DNA deletions affect energy metabolism at tissue-specific and cell-specific threshold levels, but the pathophysiological mechanisms determining cell fate remain poorly understood. Chronic progressive external ophthalmoplegia (CPEO) is caused by mtDNA deletions and characterized by a mosaic distribution of muscle fibers with defective cytochrome oxidase (COX) activity, interspersed among fibers with retained functional respiratory chain. We used diagnostic histochemistry to distinguish COX-negative from COX-positive fibers in nine muscle biopsies from CPEO patients and performed laser capture microdissection (LCM) coupled to genome-wide gene expression analysis. To gain molecular insight into the pathogenesis, we applied network and pathway analysis to highlight molecular differences of the COX-positive and COX-negative fiber transcriptome. We then integrated our results with proteomics data that we previously obtained comparing COX-positive and COX-negative fiber sections from three other patients. By virtue of the combination of LCM and a multi-omics approach, we here provide a comprehensive resource to tackle the pathogenic changes leading to progressive respiratory chain deficiency and disease in mitochondrial deletion syndromes. Our data show that COX-negative fibers upregulate transcripts involved in translational elongation and protein synthesis. Furthermore, based on functional annotation analysis, we find that mitochondrial transcripts are the most enriched among those with significantly different expression between COX-positive and COX-negative fibers, indicating that our unbiased large-scale approach resolves the core of the pathogenic changes. Further enrichments include transcripts encoding LIM domain proteins, ubiquitin ligases, proteins involved in RNA turnover, and, interestingly, cell cycle arrest and cell death. These pathways may thus have a functional association to the molecular pathogenesis of the disease. Overall, the transcriptome and proteome show a low degree of correlation in CPEO patients, suggesting a relevant contribution of post-transcriptional mechanisms in shaping this disease phenotype.
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Affiliation(s)
- Matthias Elstner
- Department of Neurology, Technical University Munich, 81675 Munich, Germany;
| | - Konrad Olszewski
- Center for Addictive Disorders, Department of Psychiatry, Psychotherapy and Psychosomatics, Psychiatric Hospital, University of Zurich, 8001 Zurich, Switzerland;
| | - Holger Prokisch
- Institute of Human Genetics, Technical University Munich, 81675 Munich, Germany;
- Institute of Neurogenomics, Helmholtz Zentrum Munich, 85764 Neuherberg, Germany
| | - Thomas Klopstock
- Department of Neurology, Friedrich-Baur-Institute, University of Munich, 80336 Munich, Germany;
- German Center for Neurodegenerative Diseases (DZNE), 81675 Munich, Germany
- Munich Cluster for Systems Neurology (SyNergy), 81675 Munich, Germany
| | - Marta Murgia
- Department of Proteomics a Signal Transduction, Max Planck Institute of Biochemistry, 82352 Martinsried, Germany
- Department of Biomedical Sciences, University of Padova, 35131 Padua, Italy
- Correspondence:
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14
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Monti E, Reggiani C, Franchi MV, Toniolo L, Sandri M, Armani A, Zampieri S, Giacomello E, Sarto F, Sirago G, Murgia M, Nogara L, Marcucci L, Ciciliot S, Šimunic B, Pišot R, Narici MV. Neuromuscular junction instability and altered intracellular calcium handling as early determinants of force loss during unloading in humans. J Physiol 2021; 599:3037-3061. [PMID: 33881176 PMCID: PMC8359852 DOI: 10.1113/jp281365] [Citation(s) in RCA: 42] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2021] [Accepted: 03/30/2021] [Indexed: 01/18/2023] Open
Abstract
Key points Few days of unloading are sufficient to induce a decline of skeletal muscle mass and function; notably, contractile force is lost at a faster rate than muscle mass. The reasons behind this disproportionate loss of muscle force are still poorly understood. We provide strong evidence of two mechanisms only hypothesized until now for the rapid muscle force loss in only 10 days of bed rest. Our results show that an initial neuromuscular junction instability, accompanied by alterations in the innervation status and impairment of single fibre sarcoplasmic reticulum function contribute to the loss of contractile force in front of a preserved myofibrillar function and central activation capacity. Early onset of neuromuscular junction instability and impairment in calcium dynamics involved in excitation–contraction coupling are proposed as eligible determinants to the greater decline in muscle force than in muscle size during unloading.
Abstract Unloading induces rapid skeletal muscle atrophy and functional decline. Importantly, force is lost at a much higher rate than muscle mass. We aimed to investigate the early determinants of the disproportionate loss of force compared to that of muscle mass in response to unloading. Ten young participants underwent 10 days of bed rest (BR). At baseline (BR0) and at 10 days (BR10), quadriceps femoris (QF) volume (VOL) and isometric maximum voluntary contraction (MVC) were assessed. At BR0 and BR10 blood samples and biopsies of vastus lateralis (VL) muscle were collected. Neuromuscular junction (NMJ) stability and myofibre innervation status were assessed, together with single fibre mechanical properties and sarcoplasmic reticulum (SR) calcium handling. From BR0 to BR10, QFVOL and MVC decreased by 5.2% (P = 0.003) and 14.3% (P < 0.001), respectively. Initial and partial denervation was detected from increased neural cell adhesion molecule (NCAM)‐positive myofibres at BR10 compared with BR0 (+3.4%, P = 0.016). NMJ instability was further inferred from increased C‐terminal agrin fragment concentration in serum (+19.2% at BR10, P = 0.031). Fast fibre cross‐sectional area (CSA) showed a trend to decrease by 15% (P = 0.055) at BR10, while single fibre maximal tension (force/CSA) was unchanged. However, at BR10 SR Ca2+ release in response to caffeine decreased by 35.1% (P < 0.002) and 30.2% (P < 0.001) in fast and slow fibres, respectively, pointing to an impaired excitation–contraction coupling. These findings support the view that the early onset of NMJ instability and impairment in SR function are eligible mechanisms contributing to the greater decline in muscle force than in muscle size during unloading. Few days of unloading are sufficient to induce a decline of skeletal muscle mass and function; notably, contractile force is lost at a faster rate than muscle mass. The reasons behind this disproportionate loss of muscle force are still poorly understood. We provide strong evidence of two mechanisms only hypothesized until now for the rapid muscle force loss in only 10 days of bed rest. Our results show that an initial neuromuscular junction instability, accompanied by alterations in the innervation status and impairment of single fibre sarcoplasmic reticulum function contribute to the loss of contractile force in front of a preserved myofibrillar function and central activation capacity. Early onset of neuromuscular junction instability and impairment in calcium dynamics involved in excitation–contraction coupling are proposed as eligible determinants to the greater decline in muscle force than in muscle size during unloading.
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Affiliation(s)
- Elena Monti
- Department of Biomedical Sciences, University of Padova, Padova, 35131, Italy
| | - Carlo Reggiani
- Department of Biomedical Sciences, University of Padova, Padova, 35131, Italy.,Science and Research Center Koper, Institute for Kinesiology Research, Koper, 6000, Slovenia
| | - Martino V Franchi
- Department of Biomedical Sciences, University of Padova, Padova, 35131, Italy
| | - Luana Toniolo
- Department of Biomedical Sciences, University of Padova, Padova, 35131, Italy
| | - Marco Sandri
- Department of Biomedical Sciences, University of Padova, Padova, 35131, Italy.,Department of Biomedical Sciences, Venetian Institute of Molecular Medicine, University of Padova, Via Orus 2, Padova, 35129, Italy
| | - Andrea Armani
- Department of Biomedical Sciences, University of Padova, Padova, 35131, Italy.,Department of Biomedical Sciences, Venetian Institute of Molecular Medicine, University of Padova, Via Orus 2, Padova, 35129, Italy
| | - Sandra Zampieri
- Department of Biomedical Sciences, University of Padova, Padova, 35131, Italy.,Department of Surgery, Oncology, and Gastroenterology, University of Padova, Padova, 35124, Italy
| | - Emiliana Giacomello
- Clinical Department of Medical, Surgical and Health Sciences, Strada di Fiume, 447, Trieste, 34149, Italy
| | - Fabio Sarto
- Department of Biomedical Sciences, University of Padova, Padova, 35131, Italy
| | - Giuseppe Sirago
- Department of Biomedical Sciences, University of Padova, Padova, 35131, Italy
| | - Marta Murgia
- Department of Biomedical Sciences, University of Padova, Padova, 35131, Italy.,Department of Proteomics and Signal Transduction, Max-Planck-Institute of Biochemistry Am Klopferspitz 18, Martinsried, 82152, Germany
| | - Leonardo Nogara
- Department of Biomedical Sciences, University of Padova, Padova, 35131, Italy
| | - Lorenzo Marcucci
- Department of Biomedical Sciences, University of Padova, Padova, 35131, Italy
| | - Stefano Ciciliot
- Department of Biomedical Sciences, University of Padova, Padova, 35131, Italy.,Department of Biomedical Sciences, Venetian Institute of Molecular Medicine, University of Padova, Via Orus 2, Padova, 35129, Italy
| | - Boštjan Šimunic
- Science and Research Center Koper, Institute for Kinesiology Research, Koper, 6000, Slovenia
| | - Rado Pišot
- Science and Research Center Koper, Institute for Kinesiology Research, Koper, 6000, Slovenia
| | - Marco V Narici
- Department of Biomedical Sciences, University of Padova, Padova, 35131, Italy.,Science and Research Center Koper, Institute for Kinesiology Research, Koper, 6000, Slovenia.,CIR-MYO Myology Center, University of Padova, Padova, 35131, Italy
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15
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Deshmukh AS, Steenberg DE, Hostrup M, Birk JB, Larsen JK, Santos A, Kjøbsted R, Hingst JR, Schéele CC, Murgia M, Kiens B, Richter EA, Mann M, Wojtaszewski JFP. Deep muscle-proteomic analysis of freeze-dried human muscle biopsies reveals fiber type-specific adaptations to exercise training. Nat Commun 2021; 12:304. [PMID: 33436631 PMCID: PMC7803955 DOI: 10.1038/s41467-020-20556-8] [Citation(s) in RCA: 66] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2019] [Accepted: 12/01/2020] [Indexed: 01/29/2023] Open
Abstract
Skeletal muscle conveys several of the health-promoting effects of exercise; yet the underlying mechanisms are not fully elucidated. Studying skeletal muscle is challenging due to its different fiber types and the presence of non-muscle cells. This can be circumvented by isolation of single muscle fibers. Here, we develop a workflow enabling proteomics analysis of pools of isolated muscle fibers from freeze-dried human muscle biopsies. We identify more than 4000 proteins in slow- and fast-twitch muscle fibers. Exercise training alters expression of 237 and 172 proteins in slow- and fast-twitch muscle fibers, respectively. Interestingly, expression levels of secreted proteins and proteins involved in transcription, mitochondrial metabolism, Ca2+ signaling, and fat and glucose metabolism adapts to training in a fiber type-specific manner. Our data provide a resource to elucidate molecular mechanisms underlying muscle function and health, and our workflow allows fiber type-specific proteomic analyses of snap-frozen non-embedded human muscle biopsies.
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Affiliation(s)
- A S Deshmukh
- The Novo Nordisk Foundation Center for Protein Research, Clinical Proteomics, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark.
- The Novo Nordisk Foundation Center for Basic Metablic Research, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark.
| | - D E Steenberg
- Section of Molecular Physiology, Department of Nutrition, Exercise and Sports, University of Copenhagen, Copenhagen, Denmark
| | - M Hostrup
- Section of Integrative Physiology, Department of Nutrition, Exercise and Sports, University of Copenhagen, Copenhagen, Denmark
| | - J B Birk
- Section of Molecular Physiology, Department of Nutrition, Exercise and Sports, University of Copenhagen, Copenhagen, Denmark
| | - J K Larsen
- The Novo Nordisk Foundation Center for Basic Metablic Research, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - A Santos
- The Novo Nordisk Foundation Center for Protein Research, Clinical Proteomics, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - R Kjøbsted
- Section of Molecular Physiology, Department of Nutrition, Exercise and Sports, University of Copenhagen, Copenhagen, Denmark
| | - J R Hingst
- Section of Molecular Physiology, Department of Nutrition, Exercise and Sports, University of Copenhagen, Copenhagen, Denmark
| | - C C Schéele
- The Novo Nordisk Foundation Center for Basic Metablic Research, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
- The Centre of Inflammation and Metabolism and Centre for Physical Activity Research Rigshospitalet, University Hospital of Copenhagen, Copenhagen, Denmark
| | - M Murgia
- Department of Proteomics and Signal Transduction, Max-Planck-Institute of Biochemistry, Martinsried, Germany
- Department of Biomedical Sciences, University of Padua, Padua, Italy
| | - B Kiens
- Section of Molecular Physiology, Department of Nutrition, Exercise and Sports, University of Copenhagen, Copenhagen, Denmark
| | - E A Richter
- Section of Molecular Physiology, Department of Nutrition, Exercise and Sports, University of Copenhagen, Copenhagen, Denmark
| | - M Mann
- The Novo Nordisk Foundation Center for Protein Research, Clinical Proteomics, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
- Department of Proteomics and Signal Transduction, Max-Planck-Institute of Biochemistry, Martinsried, Germany
| | - J F P Wojtaszewski
- Section of Molecular Physiology, Department of Nutrition, Exercise and Sports, University of Copenhagen, Copenhagen, Denmark.
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16
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Zulkifli M, Neff JK, Timbalia SA, Garza NM, Chen Y, Watrous JD, Murgia M, Trivedi PP, Anderson SK, Tomar D, Nilsson R, Madesh M, Jain M, Gohil VM. Yeast homologs of human MCUR1 regulate mitochondrial proline metabolism. Nat Commun 2020; 11:4866. [PMID: 32978391 PMCID: PMC7519068 DOI: 10.1038/s41467-020-18704-1] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2019] [Accepted: 09/02/2020] [Indexed: 12/15/2022] Open
Abstract
Mitochondria house evolutionarily conserved pathways of carbon and nitrogen metabolism that drive cellular energy production. Mitochondrial bioenergetics is regulated by calcium uptake through the mitochondrial calcium uniporter (MCU), a multi-protein complex whose assembly in the inner mitochondrial membrane is facilitated by the scaffold factor MCUR1. Intriguingly, many fungi that lack MCU contain MCUR1 homologs, suggesting alternate functions. Herein, we characterize Saccharomyces cerevisiae homologs Put6 and Put7 of MCUR1 as regulators of mitochondrial proline metabolism. Put6 and Put7 are tethered to the inner mitochondrial membrane in a large hetero-oligomeric complex, whose abundance is regulated by proline. Loss of this complex perturbs mitochondrial proline homeostasis and cellular redox balance. Yeast cells lacking either Put6 or Put7 exhibit a pronounced defect in proline utilization, which can be corrected by the heterologous expression of human MCUR1. Our work uncovers an unexpected role of MCUR1 homologs in mitochondrial proline metabolism.
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Affiliation(s)
- Mohammad Zulkifli
- Department of Biochemistry and Biophysics, Texas A&M University, College Station, TX, 77843, USA
| | - John K Neff
- Department of Biochemistry and Biophysics, Texas A&M University, College Station, TX, 77843, USA
| | - Shrishiv A Timbalia
- Department of Biochemistry and Biophysics, Texas A&M University, College Station, TX, 77843, USA
| | - Natalie M Garza
- Department of Biochemistry and Biophysics, Texas A&M University, College Station, TX, 77843, USA
| | - Yingqi Chen
- Departments of Medicine and Pharmacology, University of California, San Diego, 9500 Gilman Avenue, La Jolla, CA, 92093, USA
| | - Jeramie D Watrous
- Departments of Medicine and Pharmacology, University of California, San Diego, 9500 Gilman Avenue, La Jolla, CA, 92093, USA
| | - Marta Murgia
- Department of Biomedical Sciences, University of Padova, 35121, Padua, Italy
- Max-Planck-Institute of Biochemistry, Martinsried, 82152, Germany
| | - Prachi P Trivedi
- Department of Biochemistry and Biophysics, Texas A&M University, College Station, TX, 77843, USA
| | - Steven K Anderson
- Department of Biochemistry and Biophysics, Texas A&M University, College Station, TX, 77843, USA
| | - Dhanendra Tomar
- Department of Medical Genetics and Molecular Biochemistry, Lewis Katz School of Medicine at Temple University, Philadelphia, PA, 19140, USA
- Center for Translational Medicine, Lewis Katz School of Medicine at Temple University, Philadelphia, PA, 19140, USA
| | - Roland Nilsson
- Cardiovascular Medicine Unit, Department of Medicine, Karolinska Institutet, SE-171 76, Stockholm, Sweden
- Division of Cardiovascular Medicine, Karolinska University Hospital, SE-171 76, Stockholm, Sweden
- Center for Molecular Medicine, Karolinska Institutet, SE-171 76, Stockholm, Sweden
| | - Muniswamy Madesh
- Department of Medicine, Cardiology Division, Center for Precision Medicine, University of Texas Health Science Center at San Antonio, San Antonio, TX, 78229, USA
| | - Mohit Jain
- Departments of Medicine and Pharmacology, University of California, San Diego, 9500 Gilman Avenue, La Jolla, CA, 92093, USA
| | - Vishal M Gohil
- Department of Biochemistry and Biophysics, Texas A&M University, College Station, TX, 77843, USA.
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17
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Murgia M, Tan J, Geyer PE, Doll S, Mann M, Klopstock T. Proteomics of Cytochrome c Oxidase-Negative versus -Positive Muscle Fiber Sections in Mitochondrial Myopathy. Cell Rep 2020; 29:3825-3834.e4. [PMID: 31851916 DOI: 10.1016/j.celrep.2019.11.055] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2019] [Revised: 09/30/2019] [Accepted: 11/13/2019] [Indexed: 12/15/2022] Open
Abstract
The mosaic distribution of cytochrome c oxidase+ (COX+) and COX- muscle fibers in mitochondrial disorders allows the sampling of fibers with compensated and decompensated mitochondrial function from the same individual. We apply laser capture microdissection to excise individual COX+ and COX- fibers from the biopsies of mitochondrial myopathy patients. Using mass spectrometry-based proteomics, we quantify >4,000 proteins per patient. While COX+ fibers show a higher expression of respiratory chain components, COX- fibers display protean adaptive responses, including upregulation of mitochondrial ribosomes, translation proteins, and chaperones. Upregulated proteins include C1QBP, required for mitoribosome formation and protein synthesis, and STOML2, which organizes cardiolipin-enriched microdomains and the assembly of respiratory supercomplexes. Factoring in fast/slow fiber type, COX- slow fibers show a compensatory upregulation of beta-oxidation, the AAA+ protease AFG3L1, and the OPA1-dependent cristae remodeling program. These findings reveal compensatory mechanisms in muscle fibers struggling with energy shortage and metabolic stress.
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Affiliation(s)
- Marta Murgia
- Department of Proteomics and Signal Transduction, Max Planck Institute of Biochemistry, Am Klopferspitz 18, 82152 Martinsried, Germany; Department of Biomedical Sciences, University of Padova, Via Ugo Bassi, 58/B, 35131 Padua, Italy
| | - Jing Tan
- Friedrich Baur Institute, Department of Neurology, University of Munich, 80336 Munich, Germany
| | - Philipp E Geyer
- Department of Proteomics and Signal Transduction, Max Planck Institute of Biochemistry, Am Klopferspitz 18, 82152 Martinsried, Germany
| | - Sophia Doll
- Department of Proteomics and Signal Transduction, Max Planck Institute of Biochemistry, Am Klopferspitz 18, 82152 Martinsried, Germany
| | - Matthias Mann
- Department of Proteomics and Signal Transduction, Max Planck Institute of Biochemistry, Am Klopferspitz 18, 82152 Martinsried, Germany; NNF Center for Protein Research, University of Copenhagen, Blegdamsvej 3B, 2200 Copenhagen, Denmark.
| | - Thomas Klopstock
- Friedrich Baur Institute, Department of Neurology, University of Munich, 80336 Munich, Germany; German Center for Neurodegenerative Diseases (DZNE), Munich, Germany; Munich Cluster for Systems Neurology (SyNergy), Munich, Germany.
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18
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Wackerhage H, Everett R, Krüger K, Murgia M, Simon P, Gehlert S, Neuberger E, Baumert P, Schönfelder M. Sport, exercise and COVID-19, the disease caused by the SARS-CoV-2 coronavirus. Dtsch Z Sportmed 2020. [DOI: 10.5960/dzsm.2020.441] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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19
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Tofani M, Castelli E, Sabbadini M, Berardi A, Murgia M, Servadio A, Galeoto G. Examining Reliability and Validity of the Jebsen-Taylor Hand Function Test Among Children With Cerebral Palsy. Percept Mot Skills 2020; 127:684-697. [PMID: 32321360 DOI: 10.1177/0031512520920087] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Manual dexterity has strongly predicted functional independence for daily life activities among children with cerebral palsy (CP). The Jebsen-Taylor Hand Function Test (JTHFT) is the most widely used assessment tool for exploring manual dexterity in the CP population, though no research has yet examined its psychometric properties for this use. This cross-sectional study explored the validity and internal consistency of the JTHFT in an Italian sample of inpatient and outpatient children with CP aged between 6-18 years (35 girls and 49 boys). We calculated internal consistency with Cronbach's alpha and tested validity against the Manual Ability Classification System (MACS) using Pearson's correlation coefficient. To better understand how the JTHFT compares with different levels of the MACS, we performed dominant hand timing variability for each test item. Results showed excellent internal consistency with a Cronbach's alpha of .944 and .911, respectively, for nondominant and dominant hands. There was also a statistically significant positive linear Pearson's correlation coefficient between the JTHFT and the MACS (p < .01). We observed high variability in writing performance (Item 1 of the JTHFT) within this sample for each level of the MACS. This study confirms that the JTHFT is a valid assessment tool when used in children with CP aged 6-18 years.
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Affiliation(s)
- M Tofani
- Neurorehabilitation Unit, Department of Neurosciences and Neurorehabilitation, Bambino Gesù Children's Hospital, Rome, Italy
| | - E Castelli
- Neurorehabilitation Unit, Department of Neurosciences and Neurorehabilitation, Bambino Gesù Children's Hospital, Rome, Italy
| | - M Sabbadini
- Neurorehabilitation Unit, Department of Neurosciences and Neurorehabilitation, Bambino Gesù Children's Hospital, Rome, Italy
| | | | - M Murgia
- Department of Anatomical Sciences, Histological, Legal Medicine and Locomotor Apparatus, Sapienza University of Rome
| | - A Servadio
- Department of Health Professions, Tor Vergata Hospital, Rome, Italy
| | - G Galeoto
- Department of Public Health and Infectious Diseases, Sapienza University of Rome
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20
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Furlan S, Campione M, Murgia M, Mosole S, Argenton F, Volpe P, Nori A. Calsequestrins New Calcium Store Markers of Adult Zebrafish Cerebellum and Optic Tectum. Front Neuroanat 2020; 14:15. [PMID: 32372920 PMCID: PMC7188384 DOI: 10.3389/fnana.2020.00015] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2019] [Accepted: 03/18/2020] [Indexed: 12/26/2022] Open
Abstract
Calcium stores in neurons are heterogeneous in compartmentalization and molecular composition. Danio rerio (zebrafish) is an animal model with a simply folded cerebellum similar in cellular organization to that of mammals. The aim of the study was to identify new endoplasmic reticulum (ER) calcium store markers in zebrafish adult brain with emphasis on cerebellum and optic tectum. By quantitative polymerase chain reaction, we found three RNA transcripts coding for the intra-ER calcium binding protein calsequestrin: casq1a, casq1b, and casq2. In brain homogenates, two isoforms were detected by mass spectrometry and western blotting. Fractionation experiments of whole brain revealed that Casq1a and Casq2 were enriched in a heavy fraction containing ER microsomes and synaptic membranes. By in situ hybridization, we found the heterogeneous expression of casq1a and casq2 mRNA to be compatible with the cellular localization of calsequestrins investigated by immunofluorescence. Casq1 was expressed in neurogenic differentiation 1 expressing the granule cells of the cerebellum and the periventricular zone of the optic tectum. Casq2 was concentrated in parvalbumin expressing Purkinje cells. At a subcellular level, Casq1 was restricted to granular cell bodies, and Casq2 was localized in cell bodies, dendrites, and axons. Data are discussed in relation to the differential cellular and subcellular distribution of other cerebellum calcium store markers and are evaluated with respect to the putative relevance of calsequestrins in the neuron-specific functional activity.
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Affiliation(s)
- Sandra Furlan
- Consiglio Nazionale delle Ricerche, Institute of Neuroscience, Padova, Italy
| | - Marina Campione
- Consiglio Nazionale delle Ricerche, Institute of Neuroscience, Padova, Italy
| | - Marta Murgia
- Department of Biomedical Sciences, University of Padova, Istituto Interuniversitario di Miologia, Padova, Italy.,Department of Proteomics and Signal Transduction, Max-Planck-Institute of Biochemistry, Martinsried, Germany
| | - Simone Mosole
- Institute of Oncology Research (IOR), Bellinzona, Switzerland
| | | | - Pompeo Volpe
- Department of Biomedical Sciences, University of Padova, Istituto Interuniversitario di Miologia, Padova, Italy
| | - Alessandra Nori
- Department of Biomedical Sciences, University of Padova, Istituto Interuniversitario di Miologia, Padova, Italy
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21
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Itzhak DN, Sacco F, Nagaraj N, Tyanova S, Mann M, Murgia M. SILAC-based quantitative proteomics using mass spectrometry quantifies endoplasmic reticulum stress in whole HeLa cells. Dis Model Mech 2019; 12:dmm.040741. [PMID: 31628211 PMCID: PMC6899043 DOI: 10.1242/dmm.040741] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2019] [Accepted: 10/10/2019] [Indexed: 12/20/2022] Open
Abstract
The unfolded protein response (UPR) involves extensive proteome remodeling in many cellular compartments. To date, a comprehensive analysis of the UPR has not been possible because of technological limitations. Here, we employ stable isotope labeling with amino acids in cell culture (SILAC)-based proteomics to quantify the response of over 6200 proteins to increasing concentrations of tunicamycin in HeLa cells. We further compare the effects of tunicamycin (5 µg/ml) to those of thapsigargin (1 µM) and DTT (2 mM), both activating the UPR through different mechanisms. This systematic quantification of the proteome-wide expression changes that follow proteostatic stress is a resource for the scientific community, enabling the discovery of novel players involved in the pathophysiology of the broad range of disorders linked to proteostasis. We identified increased expression in 38 proteins not previously linked to the UPR, of which 15 likely remediate ER stress, and the remainder may contribute to pathological outcomes. Unexpectedly, there are few strongly downregulated proteins, despite expression of the pro-apoptotic transcription factor CHOP, suggesting that IRE1-dependent mRNA decay (RIDD) has a limited contribution to ER stress-mediated cell death in our system. Summary: A novel observation point of a familiar scenario: proteomic quantification of over 6200 proteins as a resource to further explore endoplasmic reticulum stress.
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Affiliation(s)
- Daniel N Itzhak
- Department of Proteomics and Signal Transduction, Max-Planck-Institute of Biochemistry, 82152 Martinsried, Germany
| | - Francesca Sacco
- Department of Proteomics and Signal Transduction, Max-Planck-Institute of Biochemistry, 82152 Martinsried, Germany
| | - Nagarjuna Nagaraj
- Department of Proteomics and Signal Transduction, Max-Planck-Institute of Biochemistry, 82152 Martinsried, Germany
| | - Stefka Tyanova
- Department of Proteomics and Signal Transduction, Max-Planck-Institute of Biochemistry, 82152 Martinsried, Germany
| | - Matthias Mann
- Department of Proteomics and Signal Transduction, Max-Planck-Institute of Biochemistry, 82152 Martinsried, Germany.,Department of Proteomics, The Novo Nordisk Foundation Center for Protein Research, Faculty of Health Sciences, University of Copenhagen, DK-2100 Copenhagen, Denmark
| | - Marta Murgia
- Department of Proteomics and Signal Transduction, Max-Planck-Institute of Biochemistry, 82152 Martinsried, Germany .,Department of Biomedical Sciences, University of Padova, 35121 Padua, Italy
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22
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Murgia M, Bernetti A, Delicata M, Massetti C, Achilli EM, Mangone M, Ioppolo F, Di Sante L, Santilli V, Galeoto G, Agostini F, Venditto T. Inter- and intra-interviewer reliability of Italian version of Pediatric Evaluation of Disability Inventory (I-PEDI). Ann Ig 2019; 30:153-161. [PMID: 29465152 DOI: 10.7416/ai.2018.2206] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
BACKGROUND Childhood disabilities determine a range of immediate and long-term economic costs that have important implications for the well-being of the child, the family and the society. The Pediatric Evaluation of Disability Inventory (PEDI) measures capability and performance in children aged between 6 months and 7.5 years. It contains three scales: Functional Skills Scales (FSS), Caregiver Assistance Scale (CAS) and Modifications Scale (MS). The present study evaluated the measurement properties of the Italian version of the PEDI (PEDI-I) in patients with spastic cerebral palsy (CP). STUDY DESIGN Reliability study. METHODS The original PEDI was translated - including a cross-cultural adaptation - into Italian. Internal consistency and test-retest reliability were evaluated. RESULTS Fifty-eight children with CP were recruited. According to inter-interviewer reproducibility, the FSS domain revealed intraclass correlation coefficient (ICC) values ranging between 0.94 and 1.00. CAS domain revealed ICC values ranging between 0.94 and 1.00. The SEM values ranged between 3.25 (SDD=8.98) for SF and 5.24 for SC (SDD=14.5). According to intra-interviewer reproducibility, the FSS domain revealed ICC values ranging between 0.99 and 1.00. CAS domain revealed ICC values ranging between 0.92 and 0.99. The SEM values ranged between 3.44 (SDD=9.5) for SF and 3.75 for SC (SDD=10.36). The inter-interviewer and intra-interviewer reproducibility results showed very high ICC values for both FFS and CAS domains. Cronbach's α ranged between 0.94 and 0.99, indicating excellent internal consistency within each domain of the PEDI-I. CONCLUSION The inter-interviewer and intra-interviewer reproducibility results of PEDI-I showed very high ICC values for FFS and CAS domains. Therefore, we recommend its application to evaluate the effect of treatment in children with CP.
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Affiliation(s)
- M Murgia
- Department of Physical Medicine and Rehabilitation, Azienda Policlinico Umberto I, Rome, Italy
| | - A Bernetti
- Department of Physical Medicine and Rehabilitation. Board of Physical Medicine and Rehabilitation, Department of Anatomy, Histology, Forensic Medicine and Orthopedics, Sapienza University of Rome, Italy
| | - M Delicata
- Department of Physical Medicine and Rehabilitation. Board of Physical Medicine and Rehabilitation, Department of Anatomy, Histology, Forensic Medicine and Orthopedics, Sapienza University of Rome, Italy
| | - C Massetti
- Department of Physical Medicine and Rehabilitation. Board of Physical Medicine and Rehabilitation, Department of Anatomy, Histology, Forensic Medicine and Orthopedics, Sapienza University of Rome, Italy
| | - E M Achilli
- Department of Physical Medicine and Rehabilitation. Board of Physical Medicine and Rehabilitation, Department of Anatomy, Histology, Forensic Medicine and Orthopedics, Sapienza University of Rome, Italy
| | - M Mangone
- Department of Physical Medicine and Rehabilitation. Board of Physical Medicine and Rehabilitation, Department of Anatomy, Histology, Forensic Medicine and Orthopedics, Sapienza University of Rome, Italy
| | - F Ioppolo
- Department of Physical Medicine and Rehabilitation, Azienda Policlinico Umberto I, Rome, Italy
| | - L Di Sante
- Department of Physical Medicine and Rehabilitation, Azienda Policlinico Umberto I, Rome, Italy
| | - V Santilli
- Department of Physical Medicine and Rehabilitation, Azienda Policlinico Umberto I, Rome, Italy - Department of Physical Medicine and Rehabilitation. Board of Physical Medicine and Rehabilitation, Department of Anatomy, Histology, Forensic Medicine and Orthopedics, Sapienza University of Rome, Italy
| | - G Galeoto
- Department of Physical Medicine and Rehabilitation, Azienda Policlinico Umberto I, Rome, Italy
| | - F Agostini
- Department of Physical Medicine and Rehabilitation. Board of Physical Medicine and Rehabilitation, Department of Anatomy, Histology, Forensic Medicine and Orthopedics, Sapienza University of Rome, Italy
| | - T Venditto
- Department of Physical Medicine and Rehabilitation. Board of Physical Medicine and Rehabilitation, Department of Anatomy, Histology, Forensic Medicine and Orthopedics, Sapienza University of Rome, Italy
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23
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Schiaffino S, Reggiani C, Murgia M. Fiber type diversity in skeletal muscle explored by mass spectrometry-based single fiber proteomics. Histol Histopathol 2019; 35:239-246. [PMID: 31612964 DOI: 10.14670/hh-18-170] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Mammalian skeletal muscles are composed of a variety of muscle fibers with specialized functional properties. Slow fibers are suited for long lasting and low intensity contractile activity, while various subtypes of fast fibers are optimized to produce high force and power even with a significant fatigue. The functional specialization of muscle fibers is based on selective gene expression regulation, which provides each fiber with a specific protein complement. The recent refinement of small-scale sample preparation, combined with the development of mass spectrometers characterized by high sensitivity, sequencing speed and mass accuracy, has allowed the characterization of the proteome of single muscle fibers with an unprecedented resolution. In the last few years, the first studies on the global proteomics of individual fibers of different types have been published. In this short review we discuss the methodological advancements which have opened the way to single fiber proteomics and the discovery power of this approach. We provide examples of how specific features of single fibers can be overlooked when whole muscle or multi-fiber samples are analyzed and can only be detected when a single fiber proteome is analyzed. Thus, novel subtype-specific metabolic features, most prominently mitochondrial specialization of fiber types have been revealed by single fiber proteomics. In the same way, specific adaptive responses of single fibers to aging or loss of neural input have been detected when single fibers were individually analyzed. We conclude that the fiber type-resolved proteomes represent a powerful tool which can be applied to a variety of physiological and pathological conditions.
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Affiliation(s)
| | - Carlo Reggiani
- Department of Biomedical Sciences, University of Padova, Padova, Italy.,Institute for Kinesiology Research, Science and Research Center of Koper, Koper, Slovenia
| | - Marta Murgia
- Department of Biomedical Sciences, University of Padova, Padova, Italy.,Max-Planck-Institute of Biochemistry, Martinsried, Germany
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24
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Govoni F, Orrù E, Bonafede A, Iacobelli M, Paladino R, Vazza F, Murgia M, Vacca V, Giovannini G, Feretti L, Loi F, Bernardi G, Ferrari C, Pizzo RF, Gheller C, Manti S, Brüggen M, Brunetti G, Cassano R, de Gasperin F, Enßlin TA, Hoeft M, Horellou C, Junklewitz H, Röttgering HJA, Scaife AMM, Shimwell TW, van Weeren RJ, Wise M. A radio ridge connecting two galaxy clusters in a filament of the cosmic web. Science 2019; 364:981-984. [DOI: 10.1126/science.aat7500] [Citation(s) in RCA: 63] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2018] [Accepted: 05/13/2019] [Indexed: 11/02/2022]
Abstract
Galaxy clusters are the most massive gravitationally bound structures in the Universe. They grow by accreting smaller structures in a merging process that produces shocks and turbulence in the intracluster gas. We observed a ridge of radio emission connecting the merging galaxy clusters Abell 0399 and Abell 0401 with the Low-Frequency Array (LOFAR) telescope network at 140 megahertz. This emission requires a population of relativistic electrons and a magnetic field located in a filament between the two galaxy clusters. We performed simulations to show that a volume-filling distribution of weak shocks may reaccelerate a preexisting population of relativistic particles, producing emission at radio wavelengths that illuminates the magnetic ridge.
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25
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Schick R, Mekies LN, Shemer Y, Eisen B, Hallas T, Ben Jehuda R, Ben-Ari M, Szantai A, Willi L, Shulman R, Gramlich M, Pane LS, My I, Freimark D, Murgia M, Santamaria G, Gherghiceanu M, Arad M, Moretti A, Binah O. Functional abnormalities in induced Pluripotent Stem Cell-derived cardiomyocytes generated from titin-mutated patients with dilated cardiomyopathy. PLoS One 2018; 13:e0205719. [PMID: 30332462 PMCID: PMC6192629 DOI: 10.1371/journal.pone.0205719] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2018] [Accepted: 10/01/2018] [Indexed: 01/21/2023] Open
Abstract
Aims Dilated cardiomyopathy (DCM), a myocardial disorder that can result in progressive heart failure and arrhythmias, is defined by ventricular chamber enlargement and dilatation, and systolic dysfunction. Despite extensive research, the pathological mechanisms of DCM are unclear mainly due to numerous mutations in different gene families resulting in the same outcome—decreased ventricular function. Titin (TTN)—a giant protein, expressed in cardiac and skeletal muscles, is an important part of the sarcomere, and thus TTN mutations are the most common cause of adult DCM. To decipher the basis for the cardiac pathology in titin-mutated patients, we investigated the hypothesis that induced Pluripotent Stem Cell (iPSC)-derived cardiomyocytes (iPSC-CM) generated from patients, recapitulate the disease phenotype. The hypothesis was tested by 3 Aims: (1) Investigate key features of the excitation-contraction-coupling machinery; (2) Investigate the responsiveness to positive inotropic interventions; (3) Investigate the proteome profile of the AuP cardiomyocytes using mass-spectrometry (MS). Methods and results iPSC were generated from the patients' skin fibroblasts. The major findings were: (1) Sarcomeric organization analysis in mutated iPSC-CM showed defects in assembly and maintenance of sarcomeric structure. (2) Mutated iPSC-CM exhibited diminished inotropic and lusitropic responses to β-adrenergic stimulation with isoproterenol, increased [Ca2+]out and angiotensin-II. Additionally, mutated iPSC-CM displayed prolonged recovery in response to caffeine. These findings may result from defective or lack of interactions of the sarcomeric components with titin through its kinase domain which is absent in the mutated cells. Conclusions These findings show that the mutated cardiomyocytes from DCM patients recapitulate abnormalities of the inherited cardiomyopathies, expressed as blunted inotropic response.
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Affiliation(s)
- Revital Schick
- Department of Physiology, Biophysics and Systems Biology, Technion, Haifa, Israel
- The Rappaport Institute, Haifa, Israel
- Rappaport Faculty of Medicine, Technion, Haifa, Israel
| | - Lucy N. Mekies
- Department of Physiology, Biophysics and Systems Biology, Technion, Haifa, Israel
- The Rappaport Institute, Haifa, Israel
- Rappaport Faculty of Medicine, Technion, Haifa, Israel
| | - Yuval Shemer
- Department of Physiology, Biophysics and Systems Biology, Technion, Haifa, Israel
- The Rappaport Institute, Haifa, Israel
- Rappaport Faculty of Medicine, Technion, Haifa, Israel
| | - Binyamin Eisen
- Department of Physiology, Biophysics and Systems Biology, Technion, Haifa, Israel
- The Rappaport Institute, Haifa, Israel
- Rappaport Faculty of Medicine, Technion, Haifa, Israel
| | - Tova Hallas
- Department of Physiology, Biophysics and Systems Biology, Technion, Haifa, Israel
- The Rappaport Institute, Haifa, Israel
- Rappaport Faculty of Medicine, Technion, Haifa, Israel
| | - Ronen Ben Jehuda
- Department of Physiology, Biophysics and Systems Biology, Technion, Haifa, Israel
- The Rappaport Institute, Haifa, Israel
- Rappaport Faculty of Medicine, Technion, Haifa, Israel
- Department of Biotechnology, Technion, Haifa, Israel
| | - Meital Ben-Ari
- Department of Physiology, Biophysics and Systems Biology, Technion, Haifa, Israel
- The Rappaport Institute, Haifa, Israel
- Rappaport Faculty of Medicine, Technion, Haifa, Israel
| | - Agnes Szantai
- Department of Physiology, Biophysics and Systems Biology, Technion, Haifa, Israel
- The Rappaport Institute, Haifa, Israel
- Rappaport Faculty of Medicine, Technion, Haifa, Israel
- Department of Biochemistry, University of Szeged, Szeged, Hungary
| | - Lubna Willi
- Department of Physiology, Biophysics and Systems Biology, Technion, Haifa, Israel
- The Rappaport Institute, Haifa, Israel
- Rappaport Faculty of Medicine, Technion, Haifa, Israel
| | - Rita Shulman
- Department of Physiology, Biophysics and Systems Biology, Technion, Haifa, Israel
- The Rappaport Institute, Haifa, Israel
- Rappaport Faculty of Medicine, Technion, Haifa, Israel
| | - Michael Gramlich
- Department of Cardiology and Cardiovascular Diseases, Eberhard Karls University, Tübingen, Germany
| | - Luna Simona Pane
- Discovery Biology, Discovery Sciences, IMED Biotech Unit, AstraZeneca, Gothenburg, Sweden
| | - Ilaria My
- Medical Department–Cardiology, Klinikum rechts der Isar–Technische Universität München, Munich, Germany
| | - Dov Freimark
- Heart Failure Institute and Leviev Heart Center, Sheba Medical Center and Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Marta Murgia
- Department of Proteomics and Signal Transduction, Max-Planck-Institute of Biochemistry, Martinsried, Germany
- Department of Biomedical Sciences, University of Padova, Padua, Italy
| | - Gianluca Santamaria
- Department of Experimental and Clinical Medicine, University of Magna Grecia, Medical School, Catanzaro, Italy
| | | | - Michael Arad
- Heart Failure Institute and Leviev Heart Center, Sheba Medical Center and Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Alessandra Moretti
- Medical Department–Cardiology, Klinikum rechts der Isar–Technische Universität München, Munich, Germany
- German Centre for Cardiovascular Research–partner site Munich Heart Alliance, Munich, Germany
| | - Ofer Binah
- Department of Physiology, Biophysics and Systems Biology, Technion, Haifa, Israel
- The Rappaport Institute, Haifa, Israel
- Rappaport Faculty of Medicine, Technion, Haifa, Israel
- * E-mail:
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26
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Pepe A, Pistoia L, Giuliano P, Mangione M, Roberti MG, Sanna PMG, Carollo A, Murgia M, Vinci V, Preziosi P, Positano V, Meloni A. P1607Splenectomy is a risk factor for cardiac complications in thalassemia major. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy565.p1607] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- A Pepe
- Fondazione G. Monasterio CNR-Regione Toscana, Pisa, Italy
| | - L Pistoia
- Fondazione G. Monasterio CNR-Regione Toscana, Pisa, Italy
| | | | - M Mangione
- Fondazione G. Monasterio CNR-Regione Toscana, Pisa, Italy
| | - M G Roberti
- Azienda Ospedaliero-Universitaria OO.RR. Foggia, Foggia, Italy
| | | | - A Carollo
- Azienda Ospedaliera “Sant'Antonio Abate”, Trapani, Italy
| | - M Murgia
- Ospedale San Martino di Oristano, Oristano, Italy
| | - V Vinci
- Azienda Ospedaliera “Garibaldi” Presidio Ospedaliero Nesima, Catania, Italy
| | | | - V Positano
- Fondazione G. Monasterio CNR-Regione Toscana, Pisa, Italy
| | - A Meloni
- Fondazione G. Monasterio CNR-Regione Toscana, Pisa, Italy
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27
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Murgia M, Toniolo L, Nagaraj N, Ciciliot S, Vindigni V, Schiaffino S, Reggiani C, Mann M. Single Muscle Fiber Proteomics Reveals Fiber-Type-Specific Features of Human Muscle Aging. Cell Rep 2018; 19:2396-2409. [PMID: 28614723 DOI: 10.1016/j.celrep.2017.05.054] [Citation(s) in RCA: 169] [Impact Index Per Article: 28.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2017] [Revised: 04/10/2017] [Accepted: 05/17/2017] [Indexed: 12/20/2022] Open
Abstract
Skeletal muscle is a key tissue in human aging, which affects different muscle fiber types unequally. We developed a highly sensitive single muscle fiber proteomics workflow to study human aging and show that the senescence of slow and fast muscle fibers is characterized by diverging metabolic and protein quality control adaptations. Whereas mitochondrial content declines with aging in both fiber types, glycolysis and glycogen metabolism are upregulated in slow but downregulated in fast muscle fibers. Aging mitochondria decrease expression of the redox enzyme monoamine oxidase A. Slow fibers upregulate a subset of actin and myosin chaperones, whereas an opposite change happens in fast fibers. These changes in metabolism and sarcomere quality control may be related to the ability of slow, but not fast, muscle fibers to maintain their mass during aging. We conclude that single muscle fiber analysis by proteomics can elucidate pathophysiology in a sub-type-specific manner.
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Affiliation(s)
- Marta Murgia
- Max-Planck-Institute of Biochemistry, Martinsried 82152, Germany; Department of Biomedical Science, University of Padova, Padua 35121, Italy.
| | - Luana Toniolo
- Department of Biomedical Science, University of Padova, Padua 35121, Italy
| | | | - Stefano Ciciliot
- Venetian Institute of Molecular Medicine, Padua 35129, Italy; Department of Medicine, University of Padua, Padua 35128, Italy
| | - Vincenzo Vindigni
- Department of Neurosciences, University of Padova, Padua 35128, Italy
| | | | - Carlo Reggiani
- Department of Biomedical Science, University of Padova, Padua 35121, Italy
| | - Matthias Mann
- Max-Planck-Institute of Biochemistry, Martinsried 82152, Germany.
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28
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Persiani P, Murgia M, Ranaldi FM, Mazza O, Mariani M, Crostelli M, Villani C. The treatment of femoral fractures in children with cerebral palsy. Clin Ter 2018; 169:e18-e22. [PMID: 29446787 DOI: 10.7417/t.2018.2049] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
OBJECTIVE The purpose of this study is to retrospectively evaluate a group of children affected by cerebral palsy with a recent femoral fracture, and to analyse the results and complications in relation to the treatment used. MATERIALS AND METHODS The analysis was performed on 36 children (21 M, 15 F, 8-14 years old) with cerebral palsy (7 diplegia, 28 tetraparesis, 1 hemiplegia) with a metaphyseal or a diaphyseal femoral fracture. The patients were subdivided into two groups according to their Gross Motor Function Classification System (GMFCS) level: level 2-3 (9 patients) and level 4-5 (27 patients), evaluating the presence of complications and malunions for each group at the end of each follow up. RESULTS The fractures were displaced in 24 patients and nondisplaced in 12 patients. In 26 cases the treatment involved a closed reduction and immobilisation in a long leg hip spica cast for 7 weeks, while in 10 cases the treatment involved an open reduction-internal fixation (ORIF) followed by a 3-week period in a plaster coated fracture bandage. CONCLUSIONS Taking into consideration the maximum possible recovery of function, an ORIF is preferable to prevent malunion, particularly in distal metaphysis and distal shaft fractures. In the GMFCS level 2-3 patients, surgery has allowed to recover, or at least maintain, the pre-fracture functional level, while in patients with GMFCS level 4-5, it has allowed to reduce the immobilisation times and prevent the development of decubitus lesions.
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Affiliation(s)
- P Persiani
- Department of Anatomical, Histological, Forensic Medicine and Musculoskeletal System Sciences - Sapienza University of Rome
| | - M Murgia
- Department of Physical Medicine and Rehabilitation, Policlinico Umberto I Hospital, Rome
| | - F M Ranaldi
- Department of Anatomical, Histological, Forensic Medicine and Musculoskeletal System Sciences - Sapienza University of Rome
| | - O Mazza
- IRCCS Bambino Gesù Pediatric Hospital, Rome
| | - M Mariani
- IRCCS Bambino Gesù Pediatric Hospital, Palidoro, Italy
| | | | - C Villani
- Department of Anatomical, Histological, Forensic Medicine and Musculoskeletal System Sciences - Sapienza University of Rome
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Wierer M, Prestel M, Schiller HB, Yan G, Schaab C, Azghandi S, Werner J, Kessler T, Malik R, Murgia M, Aherrahrou Z, Schunkert H, Dichgans M, Mann M. Compartment-resolved Proteomic Analysis of Mouse Aorta during Atherosclerotic Plaque Formation Reveals Osteoclast-specific Protein Expression. Mol Cell Proteomics 2017; 17:321-334. [PMID: 29208753 PMCID: PMC5795394 DOI: 10.1074/mcp.ra117.000315] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2017] [Revised: 11/20/2017] [Indexed: 12/29/2022] Open
Abstract
Atherosclerosis leads to vascular lesions that involve major rearrangements of the vascular proteome, especially of the extracellular matrix (ECM). Using single aortas from ApoE knock out mice, we quantified formation of plaques by single-run, high-resolution mass spectrometry (MS)-based proteomics. To probe localization on a proteome-wide scale we employed quantitative detergent solubility profiling. This compartment- and time-resolved resource of atherogenesis comprised 5117 proteins, 182 of which changed their expression status in response to vessel maturation and atherosclerotic plaque development. In the insoluble ECM proteome, 65 proteins significantly changed, including relevant collagens, matrix metalloproteinases and macrophage derived proteins. Among novel factors in atherosclerosis, we identified matrilin-2, the collagen IV crosslinking enzyme peroxidasin as well as the poorly characterized MAM-domain containing 2 (Mamdc2) protein as being up-regulated in the ECM during atherogenesis. Intriguingly, three subunits of the osteoclast specific V-ATPase complex were strongly increased in mature plaques with an enrichment in macrophages thus implying an active de-mineralization function.
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Affiliation(s)
- Michael Wierer
- From the ‡Department of Proteomics and Signal Transduction, Max-Planck Institute of Biochemistry, Martinsried, Germany
| | - Matthias Prestel
- §Institute for Stroke and Dementia Research, Klinikum der Universität München, München, Germany
| | - Herbert B Schiller
- From the ‡Department of Proteomics and Signal Transduction, Max-Planck Institute of Biochemistry, Martinsried, Germany.,¶Comprehensive Pneumology Center, Helmholtz Zentrum München, Member of the German Center for Lung Research (DZL), Munich, Germany
| | - Guangyao Yan
- §Institute for Stroke and Dementia Research, Klinikum der Universität München, München, Germany
| | - Christoph Schaab
- From the ‡Department of Proteomics and Signal Transduction, Max-Planck Institute of Biochemistry, Martinsried, Germany
| | - Sepiede Azghandi
- §Institute for Stroke and Dementia Research, Klinikum der Universität München, München, Germany
| | - Julia Werner
- ‖Klinik für Herz- und Kreislauferkrankungen, Deutsches Herzzentrum München, Technische Universität München, Munich, Germany
| | - Thorsten Kessler
- ‖Klinik für Herz- und Kreislauferkrankungen, Deutsches Herzzentrum München, Technische Universität München, Munich, Germany
| | - Rainer Malik
- §Institute for Stroke and Dementia Research, Klinikum der Universität München, München, Germany
| | - Marta Murgia
- From the ‡Department of Proteomics and Signal Transduction, Max-Planck Institute of Biochemistry, Martinsried, Germany.,**Department of Biomedical Sciences, University of Padova, Padua, Italy
| | - Zouhair Aherrahrou
- ‡‡Institut für Integrative und Experimentelle Genomik, Universität zu Lübeck, Lübeck, Germany.,§§Deutsches Zentrum für Herz-Kreislauf-Forschung (DZHK), e.V., Partner Site Hamburg/Kiel/Lübeck, Lübeck Germany
| | - Heribert Schunkert
- ‖Klinik für Herz- und Kreislauferkrankungen, Deutsches Herzzentrum München, Technische Universität München, Munich, Germany.,¶¶DZHK e.V. (German Center for Cardiovascular Research), Partner Site Munich Heart Alliance, Munich, Germany
| | - Martin Dichgans
- §Institute for Stroke and Dementia Research, Klinikum der Universität München, München, Germany;
| | - Matthias Mann
- From the ‡Department of Proteomics and Signal Transduction, Max-Planck Institute of Biochemistry, Martinsried, Germany;
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Granatiero V, Gherardi G, Vianello M, Salerno E, Zecchini E, Toniolo L, Pallafacchina G, Murgia M, Blaauw B, Rizzuto R, Mammucari C. Role of p66shc in skeletal muscle function. Sci Rep 2017; 7:6283. [PMID: 28740219 PMCID: PMC5524746 DOI: 10.1038/s41598-017-06363-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2017] [Accepted: 06/20/2017] [Indexed: 01/29/2023] Open
Abstract
p66shc is a growth factor adaptor protein that contributes to mitochondrial ROS production. p66shc is involved in insulin signaling and its deletion exerts a protective effect against diet-induced obesity. In light of the role of skeletal muscle activity in the control of systemic metabolism and obesity, we investigated which is the contribution of p66shc in regulating muscle structure and function. Here, we show that p66shc−/− muscles are undistinguishable from controls in terms of size, resistance to denervation-induced atrophy, and force. However, p66shc−/− mice perform slightly better than wild type animals during repetitive downhill running. Analysis of the effects after placing mice on a high fat diet (HFD) regimen demonstrated that running distance is greatly reduced in obese wild type animals, but not in overweight-resistant p66shc−/− mice. In addition, muscle force measured after exercise decreases upon HFD in wild type mice while p66shc−/− animals are protected. Our data indicate that p66shc affect the response to damage of adult muscle in chow diet, and it determines the maintenance of muscle force and exercise performance upon a HFD regimen.
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Affiliation(s)
- Veronica Granatiero
- Department of Biomedical Sciences, University of Padua, Padua, Italy.,Weill Cornell Medical College, New York City, NY, USA
| | - Gaia Gherardi
- Department of Biomedical Sciences, University of Padua, Padua, Italy
| | - Matteo Vianello
- Department of Biomedical Sciences, University of Padua, Padua, Italy
| | - Elsa Salerno
- Department of Biomedical Sciences, University of Padua, Padua, Italy
| | - Erika Zecchini
- Department of Biomedical Sciences, University of Padua, Padua, Italy
| | - Luana Toniolo
- Department of Biomedical Sciences, University of Padua, Padua, Italy
| | - Giorgia Pallafacchina
- Department of Biomedical Sciences, University of Padua, Padua, Italy.,CNR Neuroscience Institute, Padua, Italy
| | - Marta Murgia
- Department of Biomedical Sciences, University of Padua, Padua, Italy
| | - Bert Blaauw
- Department of Biomedical Sciences, University of Padua, Padua, Italy.,Venetian Institute of Molecular Medicine (VIMM), Padua, Italy
| | - Rosario Rizzuto
- Department of Biomedical Sciences, University of Padua, Padua, Italy.
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31
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Schiaffino S, Murgia M, Leinwand LA, Reggiani C. Letter to the editor: Comments on Stuart et al. (2016): "Myosin content of individual human muscle fibers isolated by laser capture microdissection". Am J Physiol Cell Physiol 2016; 311:C1048-C1049. [PMID: 27956413 DOI: 10.1152/ajpcell.00294.2016] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
| | - Marta Murgia
- Department of Biomedical Sciences, University of Padova, Padua, Italy.,Department of Proteomics and Signal Transduction, Max-Planck-Institute of Biochemistry, Martinsried, Germany; and
| | - Leslie A Leinwand
- Department of Molecular, Cellular and Developmental Biology and BioFrontiers Institute, University of Colorado, Boulder, Colorado
| | - Carlo Reggiani
- Department of Biomedical Sciences, University of Padova, Padua, Italy
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32
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Schiaffino S, Reggiani C, Kostrominova TY, Mann M, Murgia M. Mitochondrial specialization revealed by single muscle fiber proteomics: focus on the Krebs cycle. Scand J Med Sci Sports 2016; 25 Suppl 4:41-8. [PMID: 26589116 DOI: 10.1111/sms.12606] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/04/2015] [Indexed: 12/15/2022]
Abstract
We have developed a highly sensitive mass spectrometry-based proteomic workflow to examine the proteome of single muscle fibers. This study revealed significant differences in the mitochondrial proteome of the four major fiber types present in mouse skeletal muscle. Here, we focus on Krebs cycle enzymes and in particular on the differential distribution of the two mitochondrial isocitrate dehydrogenases, IDH2 and IDH3. Type 1/slow fibers contain high levels of IDH2 and relatively low levels of IDH3, whereas fast 2X and 2B fibers show an opposite expression pattern. The findings suggest that in skeletal muscle, IDH2 functions in the forward direction of the Krebs cycle and that substrate flux along the cycle occurs predominantly via IDH2 in type 1 fibers and via IDH3 in 2X and 2B fibers. IDH2-mediated conversion of isocitrate to α-ketoglutarate leads to the generation of NADPH, which is critical to buffering the H2O2 produced by the respiratory chain. Nicotinamide nucleotide transhydrogenase (NNT), the other major mitochondrial enzyme involved in NADPH generation, is also more abundant in type 1 fibers. We suggest that the continuously active type 1 fibers are endowed with a more efficient H2O2 scavenging capacity to cope with the higher levels of reactive oxygen species production.
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Affiliation(s)
- S Schiaffino
- Venetian Institute of Molecular Medicine (VIMM), Padova, Italy
| | - C Reggiani
- Department of Biomedical Sciences, University of Padova, Padova, Italy.,CNR Institute of Neuroscience, Padova, Italy
| | | | - M Mann
- Department of Proteomics and Signal Transduction, Max-Planck-Institute of Biochemistry, Martinsried, Germany.,Department of Proteomics, The Novo Nordisk Foundation Center for Protein Research, Faculty of Health Sciences, University of Copenhagen, Copenhagen, Denmark
| | - M Murgia
- Department of Biomedical Sciences, University of Padova, Padova, Italy.,Department of Proteomics and Signal Transduction, Max-Planck-Institute of Biochemistry, Martinsried, Germany
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33
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Gramlich M, Pane LS, Zhou Q, Chen Z, Murgia M, Schötterl S, Goedel A, Metzger K, Brade T, Parrotta E, Schaller M, Gerull B, Thierfelder L, Aartsma-Rus A, Labeit S, Atherton JJ, McGaughran J, Harvey RP, Sinnecker D, Mann M, Laugwitz KL, Gawaz MP, Moretti A. Antisense-mediated exon skipping: a therapeutic strategy for titin-based dilated cardiomyopathy. EMBO Mol Med 2016; 7:562-76. [PMID: 25759365 PMCID: PMC4492817 DOI: 10.15252/emmm.201505047] [Citation(s) in RCA: 83] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Frameshift mutations in the TTN gene encoding titin are a major cause for inherited forms of dilated cardiomyopathy (DCM), a heart disease characterized by ventricular dilatation, systolic dysfunction, and progressive heart failure. To date, there are no specific treatment options for DCM patients but heart transplantation. Here, we show the beneficial potential of reframing titin transcripts by antisense oligonucleotide (AON)-mediated exon skipping in human and murine models of DCM carrying a previously identified autosomal-dominant frameshift mutation in titin exon 326. Correction of TTN reading frame in patient-specific cardiomyocytes derived from induced pluripotent stem cells rescued defective myofibril assembly and stability and normalized the sarcomeric protein expression. AON treatment in Ttn knock-in mice improved sarcomere formation and contractile performance in homozygous embryos and prevented the development of the DCM phenotype in heterozygous animals. These results demonstrate that disruption of the titin reading frame due to a truncating DCM mutation can be restored by exon skipping in both patient cardiomyocytes in vitro and mouse heart in vivo, indicating RNA-based strategies as a potential treatment option for DCM.
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Affiliation(s)
- Michael Gramlich
- Department of Cardiology and Cardiovascular Diseases, Eberhard Karls University, Tübingen, Germany Victor Chang Cardiac Research Institute, Darlinghurst, NSW, Australia
| | - Luna Simona Pane
- I. Medical Department - Cardiology, Klinikum rechts der Isar - Technische Universität München, Munich, Germany
| | - Qifeng Zhou
- Department of Cardiology and Cardiovascular Diseases, Eberhard Karls University, Tübingen, Germany
| | - Zhifen Chen
- I. Medical Department - Cardiology, Klinikum rechts der Isar - Technische Universität München, Munich, Germany
| | - Marta Murgia
- Department of Proteomics and Signal Transduction, Max Planck Institute of Biochemistry, Martinsried, Germany Department of Biomedical Sciences, University of Padova, Padua, Italy
| | - Sonja Schötterl
- Department of Cardiology and Cardiovascular Diseases, Eberhard Karls University, Tübingen, Germany
| | - Alexander Goedel
- I. Medical Department - Cardiology, Klinikum rechts der Isar - Technische Universität München, Munich, Germany
| | - Katja Metzger
- Department of Cardiology and Cardiovascular Diseases, Eberhard Karls University, Tübingen, Germany
| | - Thomas Brade
- I. Medical Department - Cardiology, Klinikum rechts der Isar - Technische Universität München, Munich, Germany
| | - Elvira Parrotta
- I. Medical Department - Cardiology, Klinikum rechts der Isar - Technische Universität München, Munich, Germany Department of Experimental and Clinical Medicine, University Magna Graecia of Catanzaro, Catanzaro, Italy
| | - Martin Schaller
- Department of Dermatology, Eberhard Karls University, Tübingen, Germany
| | - Brenda Gerull
- Libin Cardiovascular Institute of Alberta and University of Calgary, Calgary, AB, Canada
| | | | - Annemieke Aartsma-Rus
- Department of Human Genetics, Leiden University Medical Center, Leiden, The Netherlands
| | - Siegfried Labeit
- Institute for Integrative Pathophysiology, Universitätsmedizin Mannheim, Mannheim, Germany
| | - John J Atherton
- Department of Cardiology, Royal Brisbane and Women's Hospital and University of Queensland School of Medicine, Brisbane, Australia
| | - Julie McGaughran
- Genetic Health Queensland, Royal Brisbane and Women's Hospital, Brisbane, Qld, Australia
| | - Richard P Harvey
- Victor Chang Cardiac Research Institute, Darlinghurst, NSW, Australia St Vincent's Clinical School, University of New South Wales, Kensington, NSW, Australia
| | - Daniel Sinnecker
- I. Medical Department - Cardiology, Klinikum rechts der Isar - Technische Universität München, Munich, Germany
| | - Matthias Mann
- Department of Proteomics and Signal Transduction, Max Planck Institute of Biochemistry, Martinsried, Germany
| | - Karl-Ludwig Laugwitz
- I. Medical Department - Cardiology, Klinikum rechts der Isar - Technische Universität München, Munich, Germany DZHK (German Centre for Cardiovascular Research) - partner site Munich Heart Alliance, Munich, Germany
| | - Meinrad Paul Gawaz
- Department of Cardiology and Cardiovascular Diseases, Eberhard Karls University, Tübingen, Germany
| | - Alessandra Moretti
- I. Medical Department - Cardiology, Klinikum rechts der Isar - Technische Universität München, Munich, Germany DZHK (German Centre for Cardiovascular Research) - partner site Munich Heart Alliance, Munich, Germany
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Furlan S, Mosole S, Murgia M, Nagaraj N, Argenton F, Volpe P, Nori A. Calsequestrins in skeletal and cardiac muscle from adult Danio rerio. J Muscle Res Cell Motil 2015; 37:27-39. [PMID: 26585961 DOI: 10.1007/s10974-015-9432-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2015] [Accepted: 11/07/2015] [Indexed: 12/13/2022]
Abstract
Calsequestrin (Casq) is a high capacity, low affinity Ca(2+)-binding protein, critical for Ca(2+)-buffering in cardiac and skeletal muscle sarcoplasmic reticulum. All vertebrates have multiple genes encoding for different Casq isoforms. Increasing interest has been focused on mammalian and human Casq genes since mutations of both cardiac (Casq2) and skeletal muscle (Casq1) isoforms cause different, and sometime severe, human pathologies. Danio rerio (zebrafish) is a powerful model for studying function and mutations of human proteins. In this work, expression, biochemical properties cellular and sub-cellular localization of D. rerio native Casq isoforms are investigated. By quantitative PCR, three mRNAs were detected in skeletal muscle and heart with different abundances. Three zebrafish Casqs: Casq1a, Casq1b and Casq2 were identified by mass spectrometry (Data are available via ProteomeXchange with identifier PXD002455). Skeletal and cardiac zebrafish calsequestrins share properties with mammalian Casq1 and Casq2. Skeletal Casqs were found primarily, but not exclusively, at the sarcomere Z-line level where terminal cisternae of sarcoplasmic reticulum are located.
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Affiliation(s)
- Sandra Furlan
- Institute of Neuroscience Consiglio Nazionale delle Ricerche, Viale G. Colombo 3, 35121, Padua, Italy
| | - Simone Mosole
- Department of Biomedical Sciences, Istituto Interuniversitario di Miologia, University of Padova, Viale G. Colombo 3, 35121, Padua, Italy
| | - Marta Murgia
- Department of Biomedical Sciences, Istituto Interuniversitario di Miologia, University of Padova, Viale G. Colombo 3, 35121, Padua, Italy
- Department of Proteomics and Signal Transduction, Max-Planck-Institute of Biochemistry, Am Klopferspitz 18, 82152, Martinsried, Germany
| | - Nagarjuna Nagaraj
- Department of Proteomics and Signal Transduction, Max-Planck-Institute of Biochemistry, Am Klopferspitz 18, 82152, Martinsried, Germany
| | - Francesco Argenton
- Department of Biology, University of Padova, Via U.Bassi 58/B, 35121, Padua, Italy
| | - Pompeo Volpe
- Institute of Neuroscience Consiglio Nazionale delle Ricerche, Viale G. Colombo 3, 35121, Padua, Italy
- Department of Biomedical Sciences, Istituto Interuniversitario di Miologia, University of Padova, Viale G. Colombo 3, 35121, Padua, Italy
| | - Alessandra Nori
- Department of Biomedical Sciences, Istituto Interuniversitario di Miologia, University of Padova, Viale G. Colombo 3, 35121, Padua, Italy.
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Affiliation(s)
- M. Murgia
- Dipartimento di Biologia ambientale; Universita’ di Siena; Italy
| | - H. J. Wilms
- Department of Plant Cytology and Morphology; Agricultural University; Aboretumlaan 4 6703 BD Wageningen The Netherlands
| | - M. Cresti
- Dipartimento di Biologia ambientale; Universita’ di Siena; Italy
| | - G. Cesca
- Orto Botanico; Universita’ della Calabria; Cosenza Italy
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Murgia M, Nagaraj N, Deshmukh AS, Zeiler M, Cancellara P, Moretti I, Reggiani C, Schiaffino S, Mann M. Single muscle fiber proteomics reveals unexpected mitochondrial specialization. EMBO Rep 2015; 16:387-95. [PMID: 25643707 PMCID: PMC4364878 DOI: 10.15252/embr.201439757] [Citation(s) in RCA: 132] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Mammalian skeletal muscles are composed of multinucleated cells termed slow or fast fibers according to their contractile and metabolic properties. Here, we developed a high-sensitivity workflow to characterize the proteome of single fibers. Analysis of segments of the same fiber by traditional and unbiased proteomics methods yielded the same subtype assignment. We discovered novel subtype-specific features, most prominently mitochondrial specialization of fiber types in substrate utilization. The fiber type-resolved proteomes can be applied to a variety of physiological and pathological conditions and illustrate the utility of single cell type analysis for dissecting proteomic heterogeneity.
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Affiliation(s)
- Marta Murgia
- Department of Proteomics and Signal Transduction, Max-Planck-Institute of Biochemistry, Martinsried, Germany Department of Biomedical Sciences, University of Padova, Padua, Italy
| | - Nagarjuna Nagaraj
- Department of Proteomics and Signal Transduction, Max-Planck-Institute of Biochemistry, Martinsried, Germany
| | - Atul S Deshmukh
- Department of Proteomics and Signal Transduction, Max-Planck-Institute of Biochemistry, Martinsried, Germany Department of Proteomics, The Novo Nordisk Foundation Center for Protein Research, Faculty of Health Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Marlis Zeiler
- Department of Proteomics and Signal Transduction, Max-Planck-Institute of Biochemistry, Martinsried, Germany
| | - Pasqua Cancellara
- Department of Biomedical Sciences, University of Padova, Padua, Italy
| | - Irene Moretti
- Venetian Institute of Molecular Medicine, Padua, Italy
| | - Carlo Reggiani
- Department of Biomedical Sciences, University of Padova, Padua, Italy
| | | | - Matthias Mann
- Department of Proteomics and Signal Transduction, Max-Planck-Institute of Biochemistry, Martinsried, Germany Department of Proteomics, The Novo Nordisk Foundation Center for Protein Research, Faculty of Health Sciences, University of Copenhagen, Copenhagen, Denmark
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Deshmukh AS, Murgia M, Nagaraj N, Treebak JT, Cox J, Mann M. Deep proteomics of mouse skeletal muscle enables quantitation of protein isoforms, metabolic pathways, and transcription factors. Mol Cell Proteomics 2015; 14:841-53. [PMID: 25616865 PMCID: PMC4390264 DOI: 10.1074/mcp.m114.044222] [Citation(s) in RCA: 200] [Impact Index Per Article: 22.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2014] [Indexed: 11/07/2022] Open
Abstract
Skeletal muscle constitutes 40% of individual body mass and plays vital roles in locomotion and whole-body metabolism. Proteomics of skeletal muscle is challenging because of highly abundant contractile proteins that interfere with detection of regulatory proteins. Using a state-of-the art MS workflow and a strategy to map identifications from the C2C12 cell line model to tissues, we identified a total of 10,218 proteins, including skeletal muscle specific transcription factors like myod1 and myogenin and circadian clock proteins. We obtain absolute abundances for proteins expressed in a muscle cell line and skeletal muscle, which should serve as a valuable resource. Quantitation of protein isoforms of glucose uptake signaling pathways and in glucose and lipid metabolic pathways provides a detailed metabolic map of the cell line compared with tissue. This revealed unexpectedly complex regulation of AMP-activated protein kinase and insulin signaling in muscle tissue at the level of enzyme isoforms.
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Affiliation(s)
- Atul S Deshmukh
- From the ‡Department of Proteomics and Signal Transduction, Max-Planck-Institute of Biochemistry, Am Klopferspitz 18, D-82152 Martinsried, Germany
| | - Marta Murgia
- From the ‡Department of Proteomics and Signal Transduction, Max-Planck-Institute of Biochemistry, Am Klopferspitz 18, D-82152 Martinsried, Germany; §Department of Biomedical Sciences, University of Padova, Viale G. Colombo 3, 35121 Padua, Italy
| | - Nagarjuna Nagaraj
- From the ‡Department of Proteomics and Signal Transduction, Max-Planck-Institute of Biochemistry, Am Klopferspitz 18, D-82152 Martinsried, Germany
| | - Jonas T Treebak
- ¶The Novo Nordisk Foundation Center for Basic Metabolic Research, Section of Integrative Physiology, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Jürgen Cox
- From the ‡Department of Proteomics and Signal Transduction, Max-Planck-Institute of Biochemistry, Am Klopferspitz 18, D-82152 Martinsried, Germany
| | - Matthias Mann
- From the ‡Department of Proteomics and Signal Transduction, Max-Planck-Institute of Biochemistry, Am Klopferspitz 18, D-82152 Martinsried, Germany; ‖The Novo Nordisk Foundation Center for Protein Research, Department for proteomics, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
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Murgia M, Rizzuto R. Molecular diversity and pleiotropic role of the mitochondrial calcium uniporter. Cell Calcium 2014; 58:11-7. [PMID: 26048007 DOI: 10.1016/j.ceca.2014.11.001] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2014] [Revised: 10/31/2014] [Accepted: 11/04/2014] [Indexed: 11/28/2022]
Abstract
The long awaited molecular identification of the mitochondrial calcium uniporter (MCU) in 2011 has opened an exciting phase in the study of mitochondrial calcium homeostasis. On the one hand, MCU proved to be the core of a complex signaling system, composed of a channel moiety (MCU itself and the related MCUb protein) and a family of essential regulators (the MICUs, MCUR, EMRE). On the other hand, the availability of molecular information and tools opened the possibility of directly altering mitochondrial calcium homeostasis in cell cultures or intact organisms, thus obtaining new insight into its role in physiological and pathological events. We will review here these exciting advancements, summarizing the current knowledge of the molecular composition of the MCU complex and of its role in shaping mitochondrial and cytosolic [Ca(2+)] signals.
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Affiliation(s)
- Marta Murgia
- Department of Biomedical Sciences and CNR Neuroscience Institute, University of Padua, Padua, Italy
| | - Rosario Rizzuto
- Department of Biomedical Sciences and CNR Neuroscience Institute, University of Padua, Padua, Italy.
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Abstract
OBJECTIVES Chronic renal failure is a public health problem of great relevance for significant mortality and high socio-economic impact. This study purposed to assess the psychological status in patients on hemodialysis; moreover other purpose is to investigate the possible differences among the first 3 months of hemodialysis treatment replacement. MATERIALS AND METHODS The study was carried out on 12 hemodialysis patients, aged 71.6 years (range: 34-87). Mood was measured by using the Profile of Mood States (POMS) developed in 1971 by Douglas M. McNair. RESULTS The overall score of mood disorders shows a total negative state in the initial phases of dialysis treatment [F (2,22) = 10.17; p <0.01] and a progressive improvement of the same, with a linear trend [F (1,11) = 12.65; p <0.05]. CONCLUSIONS The model of hemodialysis patients is particularly interesting for several reasons, but especially for the possibility of crosssectional and longitudinal assessments. The aim of future studies will be to characterize and investigate the complex psycho-social variables in this category of patients, to improve their quality of life.
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Affiliation(s)
- D Di Corrado
- Dipartimento di Scienze delle Attività Motorie e Sportive, Università di Trieste, Italia.
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Cramer T, Campana A, Leonardi F, Casalini S, Kyndiah A, Murgia M, Biscarini F. Water-gated organic field effect transistors – opportunities for biochemical sensing and extracellular signal transduction. J Mater Chem B 2013; 1:3728-3741. [DOI: 10.1039/c3tb20340a] [Citation(s) in RCA: 116] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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Di Sante L, Paoloni M, Dimaggio M, Colella L, Cerino A, Bernetti A, Murgia M, Santilli V. Ultrasound-guided aspiration and corticosteroid injection compared to horizontal therapy for treatment of knee osteoarthritis complicated with Baker's cyst: a randomized, controlled trial. Eur J Phys Rehabil Med 2012; 48:561-567. [PMID: 22525511] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
BACKGROUND Combining different therapies, physical therapy agents, pharmacological and physical therapies, generally produces better outcomes for symptoms of knee osteoarthritis (OA) than do isolated therapies. AIM To demonstrate if horizontal therapy (HT) and aspiration alone and corticosteroid injection alone or in combination determine pain relief and functional improvement in a group of patients with knee OA complicated with Baker's cyst (BC). DESIGN We designed a randomized controlled trial (RCT). SETTING Outpatients. POPULATION Sixty patients with a knee OA and diagnosis of BC confirmed by means of standard ultrasound (US) evaluation. METHODS The trial was conducted as a randomized, controlled trial. Patients who satisfied the inclusion criteria were randomized to either the US-guided (Ultrasound Guided BC aspiration and corticosteroid injection group (Group A), the Horizontal Therapy group (Group B) or the US-guided BC aspiration and corticosteroid injection plus Horizontal therapy group (Group C). Outcome measures included: 1) pain reduction as measured by visual analogue scale (VAS); 2) functional improvement, as measured by WOMAC; and 3) US evaluation at baseline (T0), at one (T1) and four (T2) weeks follow-up. RESULTS A total of 60 patients were randomized into group A (N.=20), group B (N.=20) or Group C (N.=20). Patients in group A and in group C, but not those in group B maintained lower pain level at T2 than at baseline, with significant lower VAS values in Group C. As regards US measurements, the maximum axial area did not change as a consequence of the treatment in any of the three groups (P=0.259). Contrarily, sagittal area measurements were influenced by time (P<0.01). CONCLUSION Our results show that the group with the best performance for pain, functionality and dimension of BC was that in which combined use was made of horizontal and corticosteroid injection therapies. CLINICAL REHABILITATION IMPACT In this study we want to demonstrate the effectiveness of Horizontal Therapy in the treatment of knee OA complicated by BC.
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Affiliation(s)
- L Di Sante
- Physical Medicine and Rehabilitation Unit, Azienda Policlinico Umberto I, Rome, Italy.
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Murgia M, Jensen TE, Cusinato M, Garcia M, Richter EA, Schiaffino S. Multiple signalling pathways redundantly control glucose transporter GLUT4 gene transcription in skeletal muscle. J Physiol 2009; 587:4319-27. [PMID: 19596898 DOI: 10.1113/jphysiol.2009.174888] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Increased glucose transporter GLUT4 expression in skeletal muscle is an important benefit of regular exercise, resulting in improved insulin sensitivity and glucose tolerance. The Ca(2+)-calmodulin-dependent kinase II (CaMKII), calcineurin and AMPK pathways have been implicated in GLUT4 gene regulation based on pharmacological evidence. Here, we have used a more specific genetic approach to establish the relative role of the three pathways in fast and slow muscles. Plasmids coding for protein inhibitors of CaMKII or calcineurin were co-transfected in vivo with a GLUT4 enhancer-reporter construct either in normal mice or in mice expressing a kinase dead (KD) AMPK mutant. GLUT4 reporter activity was not inhibited in the slow soleus muscle by blocking either CaMKII or calcineurin alone, but was inhibited by blocking both pathways. GLUT4 reporter activity was likewise unchanged in the soleus of KD-AMPK mice, but was significantly reduced by incapacitation of either CaMKII or calcineurin in these mice. On the other hand, in the fast tibialis anterior (TA) muscle, calcineurin appears to exert a prominent role in the control of GLUT4 reporter activity, independent of CaMKII and AMPK. The results point to a muscle type-specific and redundant regulation of GLUT4 enhancer based on the interplay of multiple signalling pathways, all of which are known to affect myocyte enhancing factor 2 (MEF2) transcriptional activity, a point of convergence of different pathways on muscle gene regulation.
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Affiliation(s)
- Marta Murgia
- Department of Biomedical Sciences, University of Padova, Italy
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Murgia M, Giorgi C, Pinton P, Rizzuto R. Controlling metabolism and cell death: at the heart of mitochondrial calcium signalling. J Mol Cell Cardiol 2009; 46:781-8. [PMID: 19285982 PMCID: PMC2851099 DOI: 10.1016/j.yjmcc.2009.03.003] [Citation(s) in RCA: 75] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/27/2009] [Revised: 03/05/2009] [Accepted: 03/06/2009] [Indexed: 10/21/2022]
Abstract
Transient increases in intracellular calcium concentration activate and coordinate a wide variety of cellular processes in virtually every cell type. This review describes the main homeostatic mechanisms that control Ca(2+) transients, focusing on the mitochondrial checkpoint. We subsequently extend this paradigm to the cardiomyocyte and to the interplay between cytosol, endoplasmic reticulum and mitochondria that occurs beat-to-beat in excitation-contraction coupling. The mechanisms whereby mitochondria decode fast cytosolic calcium spikes are discussed in the light of the results obtained with recombinant photoproteins targeted to the mitochondrial matrix of contracting cardiomyocytes. Mitochondrial calcium homeostasis is then highlighted as a crucial point of convergence of the environmental signals that mediate cardiac cell death, both by necrosis and by apoptosis. Altogether we point to a role of the mitochondrion as an integrator of calcium signalling and a fundamental decision maker in cardiomyocyte metabolism and survival.
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Affiliation(s)
- Marta Murgia
- Department of Biomedical Sciences, University of Padova, Viale G. Colombo 3, 35121 Padua, Italy
| | - Carlotta Giorgi
- Department of Experimental and Diagnostic Medicine, Section of General Pathology, Interdisciplinary Center for the Study of Inflammation (ICSI) and Emilia Romagna Laboratory BioPharmaNet, University of Ferrara, Via Borsari 46, 44100 Ferrara; Italy
| | - Paolo Pinton
- Department of Experimental and Diagnostic Medicine, Section of General Pathology, Interdisciplinary Center for the Study of Inflammation (ICSI) and Emilia Romagna Laboratory BioPharmaNet, University of Ferrara, Via Borsari 46, 44100 Ferrara; Italy
| | - Rosario Rizzuto
- Department of Biomedical Sciences, University of Padova, Viale G. Colombo 3, 35121 Padua, Italy
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Ionta M, Atzori F, Murgia M, Frau B, Barca M, Coinu A, Trogu A, Eltrudis F, Minerba L, Massidda B. Adding cisplatin to an anthracycline-based primary chemotherapy in triple-negative (TN) and non-triple negative (non-TN) T4 breast cancer patients (pts): Long-term outcomes. J Clin Oncol 2009. [DOI: 10.1200/jco.2009.27.15_suppl.583] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
583 Background: Clinical data demonstrated that standard anthracycline-based chemotherapy may be less beneficial in TN. Conversely, there is extensive preclinical work showing that TN tumors are highly sensitive to platinum agents. Only a few studies compared cisplatin vs non-cisplatin containing regimens among TN or non-TN homogeneous populations. The aim of this study was to evaluate the efficacy in terms of long-term outcomes of adding cisplatin to an anthracycline-based neoadjuvant regimen (cisplatin, C) compared with a standard anthracycline-based (Non-C) regimen in T4 breast cancer according to TN or non-TN status. Methods: We retrospectively analyzed 125 consecutive T4 breast cancer pts available for ER/PR and HER2 status; 98 pts (80%) were non-TN, of whom 63 treated with Non-C and 35 treated with C regimen; 27 pts (20%) were TN, of whom 10 treated with Non-C and 17 treated with C regimen. All pts received CMF, RT and hormone-therapy if indicated as adjuvant setting. None of the HER2 positive pts received peri-operative trastuzumab. Results: At a median follow-up of 101 months (8–217), estimated 10-year DFS and OS in TN pts treated with C were 47% and 59% versus 10% and 30% in pts treated with Non-C. In non-TN pts DFS and OS were 57% and 70% in pts treated with C versus 37% and 49% in pts treated with Non-C. Conclusions: Our data suggest that both TN and non-TN pts derive a better outcomes from the add of cisplatin over a standard anthracycline-based regimen. Of note, the magnitude of the benefit of cisplatin appears greater in the TN group. In order to validate these findings large prospective randomized trials are warranted. [Table: see text] No significant financial relationships to disclose.
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Affiliation(s)
- M. Ionta
- Azienda Ospedaliero-Universitaria di Cagliari, Cagliari, Italy; University of Cagliari, Cagliari, Italy
| | - F. Atzori
- Azienda Ospedaliero-Universitaria di Cagliari, Cagliari, Italy; University of Cagliari, Cagliari, Italy
| | - M. Murgia
- Azienda Ospedaliero-Universitaria di Cagliari, Cagliari, Italy; University of Cagliari, Cagliari, Italy
| | - B. Frau
- Azienda Ospedaliero-Universitaria di Cagliari, Cagliari, Italy; University of Cagliari, Cagliari, Italy
| | - M. Barca
- Azienda Ospedaliero-Universitaria di Cagliari, Cagliari, Italy; University of Cagliari, Cagliari, Italy
| | - A. Coinu
- Azienda Ospedaliero-Universitaria di Cagliari, Cagliari, Italy; University of Cagliari, Cagliari, Italy
| | - A. Trogu
- Azienda Ospedaliero-Universitaria di Cagliari, Cagliari, Italy; University of Cagliari, Cagliari, Italy
| | - F. Eltrudis
- Azienda Ospedaliero-Universitaria di Cagliari, Cagliari, Italy; University of Cagliari, Cagliari, Italy
| | - L. Minerba
- Azienda Ospedaliero-Universitaria di Cagliari, Cagliari, Italy; University of Cagliari, Cagliari, Italy
| | - B. Massidda
- Azienda Ospedaliero-Universitaria di Cagliari, Cagliari, Italy; University of Cagliari, Cagliari, Italy
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Favaretto L, Barbarella G, Rãu I, Kajzar F, Caria S, Murgia M, Zamboni R. Efficient second harmonic generation from thin films of V-shaped benzo[b]thiophene based molecules. Opt Express 2009; 17:2557-2564. [PMID: 19219158 DOI: 10.1364/oe.17.002557] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
We have designed an original approach for efficient Second Harmonic Generation of tailored V-shape benzo[b]thiophene molecular systems enabling versatile and flexible one-step, dry and technologically friendly thin film processing. The designed moieties show chi((2)) values at least as high as the reference LiNbO(3) single crystal, without poling processing and matching the constrains of integrated optical configuration for nonlinear optical devices. This may open the way to a new class of organic materials exploitable for photonic applications.
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Affiliation(s)
- L Favaretto
- 1Istituto per la Sintesi Organica e la Fotoreattività del CNR, via P. Gobetti 101, 40129 Bologna, Italy
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Maggi S, Murgia M. Introduction to the metallurgic characteristics of advanced high-strength steels for automobile applications. ACTA ACUST UNITED AC 2008. [DOI: 10.1080/09507110802413001] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Massidda B, Ionta M, Pusceddu V, Murgia M, Frau B, Perra M, Maxia C, Murtas D, Minerba L, Sirigu P. Long-term maintenance of prognostic value of survivin protein expression in T4 breast cancer patients: 10-year results from a single institution. J Clin Oncol 2008. [DOI: 10.1200/jco.2008.26.15_suppl.22124] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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lonta M, Pusceddu V, Frau B, Murgia M, Barca M, Murru M, Guerzoni D, Chiappe A, Minerba L, Massidda B. Prognostic relevance of hormone receptor and HER2 status in T4 breast cancer patients who failed to receive a pathological complete response following primary chemotherapy. Long term results from a single institution. EJC Suppl 2008. [DOI: 10.1016/s1359-6349(08)70570-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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Abstract
A variety of fiber types with different contractile and metabolic properties is present in mammalian skeletal muscle. The fiber-type profile is controlled by nerve activity via specific signaling pathways, whose identification may provide potential therapeutic targets for the prevention and treatment of metabolic and neuromuscular diseases.
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