1
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Germani S, Van Ho AT, Cherubini A, Varone E, Chernorudskiy A, Renna GM, Fumagalli S, Gobbi M, Lucchetti J, Bolis M, Guarrera L, Craparotta I, Rastelli G, Piccoli G, de Napoli C, Nogara L, Poggio E, Brini M, Cattaneo A, Bachi A, Simmen T, Calì T, Quijano-Roy S, Boncompagni S, Blaauw B, Ferreiro A, Zito E. SEPN1-related myopathy depends on the oxidoreductase ERO1A and is druggable with the chemical chaperone TUDCA. Cell Rep Med 2024; 5:101439. [PMID: 38402623 PMCID: PMC10982971 DOI: 10.1016/j.xcrm.2024.101439] [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] [Subscribe] [Scholar Register] [Received: 05/09/2023] [Revised: 12/06/2023] [Accepted: 01/31/2024] [Indexed: 02/27/2024]
Abstract
Selenoprotein N (SEPN1) is a protein of the endoplasmic reticulum (ER) whose inherited defects originate SEPN1-related myopathy (SEPN1-RM). Here, we identify an interaction between SEPN1 and the ER-stress-induced oxidoreductase ERO1A. SEPN1 and ERO1A, both enriched in mitochondria-associated membranes (MAMs), are involved in the redox regulation of proteins. ERO1A depletion in SEPN1 knockout cells restores ER redox, re-equilibrates short-range MAMs, and rescues mitochondrial bioenergetics. ERO1A knockout in a mouse background of SEPN1 loss blunts ER stress and improves multiple MAM functions, including Ca2+ levels and bioenergetics, thus reversing diaphragmatic weakness. The treatment of SEPN1 knockout mice with the ER stress inhibitor tauroursodeoxycholic acid (TUDCA) mirrors the results of ERO1A loss. Importantly, muscle biopsies from patients with SEPN1-RM exhibit ERO1A overexpression, and TUDCA-treated SEPN1-RM patient-derived primary myoblasts show improvement in bioenergetics. These findings point to ERO1A as a biomarker and a viable target for intervention and to TUDCA as a pharmacological treatment for SEPN1-RM.
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Affiliation(s)
- Serena Germani
- Istituto di Ricerche Farmacologiche Mario Negri IRCCS, Milan, Italy; Department of Molecular and Developmental Medicine, University of Siena, Siena, Italy
| | - Andrew Tri Van Ho
- Basic and Translational Myology Laboratory, Université Paris, BFA, UMR 8251, CNRS, 75013 Paris, France
| | | | - Ersilia Varone
- Istituto di Ricerche Farmacologiche Mario Negri IRCCS, Milan, Italy
| | | | | | | | - Marco Gobbi
- Istituto di Ricerche Farmacologiche Mario Negri IRCCS, Milan, Italy
| | - Jacopo Lucchetti
- Istituto di Ricerche Farmacologiche Mario Negri IRCCS, Milan, Italy
| | - Marco Bolis
- Istituto di Ricerche Farmacologiche Mario Negri IRCCS, Milan, Italy; Bioinformatics Core Unit, Institute of Oncology Research (IOR), 6500 Bellinzona, Switzerland
| | - Luca Guarrera
- Istituto di Ricerche Farmacologiche Mario Negri IRCCS, Milan, Italy
| | | | - Giorgia Rastelli
- CAST, Center for Advanced Studies and Technology & DNICS, Department of Neuroscience, Imaging and Clinical Sciences, University G. D'Annunzio of Chieti-Pescara, 66100 Chieti, Italy
| | - Giorgia Piccoli
- Department of Biomedical Sciences, University of Padua, Padua, Italy
| | - Cosimo de Napoli
- Department of Biomedical Sciences, University of Padua, Padua, Italy
| | - Leonardo Nogara
- Department of Biomedical Sciences, University of Padua, Padua, Italy; Department of Pharmaceutical Sciences, University of Padova, Padova, Italy
| | - Elena Poggio
- Department of Biology, University of Padova, Padova, Italy
| | - Marisa Brini
- Department of Pharmaceutical Sciences, University of Padova, Padova, Italy; Department of Biology, University of Padova, Padova, Italy; Study Center for Neurodegeneration (CESNE), University of Padova, Padova, Italy
| | | | - Angela Bachi
- IFOM-ETS AIRC Institute of Molecular Oncology, Milan, Italy
| | - Thomas Simmen
- Department of Cell Biology, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, AB, Canada
| | - Tito Calì
- Department of Biomedical Sciences, University of Padua, Padua, Italy; Study Center for Neurodegeneration (CESNE), University of Padova, Padova, Italy; Padova Neuroscience Center, University of Padova, Padova, Italy
| | - Susana Quijano-Roy
- APHP-Université Paris-Saclay, Reference Center for Neuromuscular Disorders Nord-Est-Ile de France, FILNEMUS, ERN-Euro-NMD, Creteil, France; Pediatric Neurology and ICU Department, DMU Santé Enfant Adolescent (SEA), Raymond Poincaré University Hospital, Garches, France
| | - Simona Boncompagni
- CAST, Center for Advanced Studies and Technology & DNICS, Department of Neuroscience, Imaging and Clinical Sciences, University G. D'Annunzio of Chieti-Pescara, 66100 Chieti, Italy
| | - Bert Blaauw
- Department of Biomedical Sciences, University of Padua, Padua, Italy; Venetian Institute of Molecular Medicine, Padova, Italy.
| | - Ana Ferreiro
- Basic and Translational Myology Laboratory, Université Paris, BFA, UMR 8251, CNRS, 75013 Paris, France; APHP, Reference Center for Neuromuscular Disorders Nord-Est-Ile de France, Neuromyology Department, Groupe Hospitalier Pitié-Salpêtrière, Paris, France.
| | - Ester Zito
- Istituto di Ricerche Farmacologiche Mario Negri IRCCS, Milan, Italy; Department of Biomolecular Sciences, University of Urbino Carlo Bo, Urbino, Italy.
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2
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de Winter JM, Molenaar JP, Yuen M, van der Pijl R, Shen S, Conijn S, van de Locht M, Willigenburg M, Bogaards SJ, van Kleef ES, Lassche S, Persson M, Rassier DE, Sztal TE, Ruparelia AA, Oorschot V, Ramm G, Hall TE, Xiong Z, Johnson CN, Li F, Kiss B, Lozano-Vidal N, Boon RA, Marabita M, Nogara L, Blaauw B, Rodenburg RJ, Küsters B, Doorduin J, Beggs AH, Granzier H, Campbell K, Ma W, Irving T, Malfatti E, Romero NB, Bryson-Richardson RJ, van Engelen BG, Voermans NC, Ottenheijm CA. KBTBD13 is an actin-binding protein that modulates muscle kinetics. J Clin Invest 2024; 134:e179111. [PMID: 38299595 PMCID: PMC10836800 DOI: 10.1172/jci179111] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2024] Open
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3
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Di Marco G, Gherardi G, De Mario A, Piazza I, Baraldo M, Mattarei A, Blaauw B, Rizzuto R, De Stefani D, Mammucari C. The mitochondrial ATP-dependent potassium channel (mitoK ATP) controls skeletal muscle structure and function. Cell Death Dis 2024; 15:58. [PMID: 38233399 PMCID: PMC10794173 DOI: 10.1038/s41419-024-06426-x] [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: 06/19/2023] [Revised: 12/20/2023] [Accepted: 01/02/2024] [Indexed: 01/19/2024]
Abstract
MitoKATP is a channel of the inner mitochondrial membrane that controls mitochondrial K+ influx according to ATP availability. Recently, the genes encoding the pore-forming (MITOK) and the regulatory ATP-sensitive (MITOSUR) subunits of mitoKATP were identified, allowing the genetic manipulation of the channel. Here, we analyzed the role of mitoKATP in determining skeletal muscle structure and activity. Mitok-/- muscles were characterized by mitochondrial cristae remodeling and defective oxidative metabolism, with consequent impairment of exercise performance and altered response to damaging muscle contractions. On the other hand, constitutive mitochondrial K+ influx by MITOK overexpression in the skeletal muscle triggered overt mitochondrial dysfunction and energy default, increased protein polyubiquitination, aberrant autophagy flux, and induction of a stress response program. MITOK overexpressing muscles were therefore severely atrophic. Thus, the proper modulation of mitoKATP activity is required for the maintenance of skeletal muscle homeostasis and function.
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Affiliation(s)
- Giulia Di Marco
- Department of Biomedical Sciences, University of Padova, Padova, Italy
| | - Gaia Gherardi
- Department of Biomedical Sciences, University of Padova, Padova, Italy
| | - Agnese De Mario
- Department of Biomedical Sciences, University of Padova, Padova, Italy
| | - Ilaria Piazza
- Department of Biomedical Sciences, University of Padova, Padova, Italy
| | | | - Andrea Mattarei
- Department of Pharmaceutical and Pharmacological Sciences, University of Padova, Padova, Italy
| | - Bert Blaauw
- Department of Biomedical Sciences, University of Padova, Padova, Italy
- Venetian Institute of Molecular Medicine, Padova, Italy
- Myology Center (CIR-Myo), University of Padova, Padova, Italy
| | - Rosario Rizzuto
- Department of Biomedical Sciences, University of Padova, Padova, Italy
- Myology Center (CIR-Myo), University of Padova, Padova, Italy
| | - Diego De Stefani
- Department of Biomedical Sciences, University of Padova, Padova, Italy
| | - Cristina Mammucari
- Department of Biomedical Sciences, University of Padova, Padova, Italy.
- Myology Center (CIR-Myo), University of Padova, Padova, Italy.
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4
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Jaime D, Fish LA, Madigan LA, Xi C, Piccoli G, Ewing MD, Blaauw B, Fallon JR. The MuSK-BMP pathway maintains myofiber size in slow muscle through regulation of Akt-mTOR signaling. Skelet Muscle 2024; 14:1. [PMID: 38172960 PMCID: PMC10763067 DOI: 10.1186/s13395-023-00329-9] [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: 02/21/2023] [Accepted: 10/19/2023] [Indexed: 01/05/2024] Open
Abstract
Myofiber size regulation is critical in health, disease, and aging. MuSK (muscle-specific kinase) is a BMP (bone morphogenetic protein) co-receptor that promotes and shapes BMP signaling. MuSK is expressed at all neuromuscular junctions and is also present extrasynaptically in the mouse soleus, whose predominantly oxidative fiber composition is akin to that of human muscle. To investigate the role of the MuSK-BMP pathway in vivo, we generated mice lacking the BMP-binding MuSK Ig3 domain. These ∆Ig3-MuSK mice are viable and fertile with innervation levels comparable to wild type. In 3-month-old mice, myofibers are smaller in the slow soleus, but not in the fast tibialis anterior (TA). Transcriptomic analysis revealed soleus-selective decreases in RNA metabolism and protein synthesis pathways as well as dysregulation of IGF1-Akt-mTOR pathway components. Biochemical analysis showed that Akt-mTOR signaling is reduced in soleus but not TA. We propose that the MuSK-BMP pathway acts extrasynaptically to maintain myofiber size in slow muscle by promoting protein synthetic pathways including IGF1-Akt-mTOR signaling. These results reveal a novel mechanism for regulating myofiber size in slow muscle and introduce the MuSK-BMP pathway as a target for promoting muscle growth and combatting atrophy.
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Grants
- R41 AG073144 NIA NIH HHS
- T32 MH020068 NIMH NIH HHS
- U01 NS064295, R41 AG073144, R21 NS112743, R21 AG073743, P30 GM103410, P30 RR031153, P20 RR018728, S10 RR02763, R25GM083270, 2T32AG041688, and T32 MH20068 NIH HHS
- P30 GM103410 NIGMS NIH HHS
- T32 AG041688 NIA NIH HHS
- P30 RR031153 NCRR NIH HHS
- U01 NS064295 NINDS NIH HHS
- R21 NS112743 NINDS NIH HHS
- P20 RR018728 NCRR NIH HHS
- R21 AG073743 NIA NIH HHS
- R25 GM083270 NIGMS NIH HHS
- National Institutes of Health
- Carney Institute for Brain Sciences
- ALS Finding a Cure
- AFM-Téléthon
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Affiliation(s)
- Diego Jaime
- Department of Molecular Biology, Cell Biology, and Biochemistry, Brown University, Providence, RI, USA
| | - Lauren A Fish
- Department of Neuroscience, Brown University, Providence, RI, 02912, USA
| | - Laura A Madigan
- Department of Molecular Biology, Cell Biology, and Biochemistry, Brown University, Providence, RI, USA
| | - Chengjie Xi
- Department of Neuroscience, Brown University, Providence, RI, 02912, USA
| | - Giorgia Piccoli
- Veneto Institute of Molecular Medicine (VIMM), Padua, Italy
- Department of Biomedical Sciences, University of Padua, Padua, Italy
| | - Madison D Ewing
- Department of Neuroscience, Brown University, Providence, RI, 02912, USA
| | - Bert Blaauw
- Veneto Institute of Molecular Medicine (VIMM), Padua, Italy
- Department of Biomedical Sciences, University of Padua, Padua, Italy
| | - Justin R Fallon
- Department of Neuroscience, Brown University, Providence, RI, 02912, USA.
- Carney Institute for Neuroscience, Brown University, Providence, RI, USA.
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5
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Mahnic N, Geremia A, Straub T, Zorzato S, Schönfelder M, von Lüttichau I, Steiger K, Saller MM, Blaauw B, Wackerhage H. One bout of endurance exercise does not change gene expression or proliferation in a C26 colon carcinoma in immunocompetent mice. J Cancer Res Clin Oncol 2023; 149:17361-17369. [PMID: 37840045 PMCID: PMC10657308 DOI: 10.1007/s00432-023-05447-x] [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: 07/24/2023] [Accepted: 09/26/2023] [Indexed: 10/17/2023]
Abstract
PURPOSE Exercise typically reduces tumour growth, proliferation and improves outcomes. Many of these effects require exercise to change gene expression within a tumour, but whether exercise actually affects gene expression within a tumour has not been investigated yet. The aim of this study was, therefore, to find out whether one bout of endurance exercise alters gene expression and proliferation in a C26 carcinoma in immunocompetent mice. METHODS BALB/c were injected with C26 colon carcinoma cells. Once the tumours had formed, the mice either ran for 65 min with increasing intensity or rested before the tumour was dissected. The tumours were then analysed by RNA-Seq and stained for the proliferation marker KI67. RESULTS One bout of running for 65 min did not systematically change gene expression in C26 carcinomas of BALB/c mice when compared to BALB/c mice that were rested. However, when analysed for sex, the expression of 17, mostly skeletal muscle-related genes was higher in the samples of the female mice taken post-exercise. Further histological analysis showed that this signal likely comes from the presence of muscle fibres from the panniculus carnosus muscle inside the tumours. Also, we found no differences in the positivity for the proliferation marker KI67 in the control and exercise C26 carcinomas. CONCLUSION A bout of exercise did not systematically affect gene expression or proliferation in C26 carcinomas in immunocompetent BALB/c mice.
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Affiliation(s)
- Nik Mahnic
- Professorship of Exercise Biology, School of Medicine and Health, Technical University of Munich, Munich, Germany
| | - Alessia Geremia
- Venetian Institute of Molecular Medicine (VIMM), Padua, Italy
- Department of Biomedical Sciences, University of Padova, Padua, Italy
| | - Tobias Straub
- Bioinformatics Core, Biomedical Center, Faculty of Medicine, Ludwig-Maximilians-University (LMU), Munich, Germany
| | - Sabrina Zorzato
- Venetian Institute of Molecular Medicine (VIMM), Padua, Italy
- Department of Biomedical Sciences, University of Padova, Padua, Italy
| | - Martin Schönfelder
- Professorship of Exercise Biology, School of Medicine and Health, Technical University of Munich, Munich, Germany
| | - Irene von Lüttichau
- Kinderklinik München Schwabing, Department of Pediatrics and Children's Cancer Research Center, TUM School of Medicine and Health, Technical University of Munich, Munich, Germany
| | - Katja Steiger
- Comparative Experimental Pathology, Institute of Pathology, School of Medicine and Health, Technical University of Munich, Munich, Germany
| | - Maximilian Michael Saller
- Department of Orthopaedics and Trauma Surgery, Musculoskeletal UniversityCenter Munich (MUM), Ludwig-Maximilians-University (LMU) University Hospital, LMU Munich, Fraunhoferstraße 20, 82152, Planegg-Martinsried, Germany
| | - Bert Blaauw
- Venetian Institute of Molecular Medicine (VIMM), Padua, Italy
- Department of Biomedical Sciences, University of Padova, Padua, Italy
| | - Henning Wackerhage
- Professorship of Exercise Biology, School of Medicine and Health, Technical University of Munich, Munich, Germany.
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6
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Gambarotto L, Metti S, Corpetti M, Baraldo M, Sabatelli P, Castagnaro S, Cescon M, Blaauw B, Bonaldo P. Sustained oral spermidine supplementation rescues functional and structural defects in COL6-deficient myopathic mice. Autophagy 2023; 19:3221-3229. [PMID: 37528588 PMCID: PMC10621270 DOI: 10.1080/15548627.2023.2241125] [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] [Subscribe] [Scholar Register] [Indexed: 08/03/2023] Open
Abstract
COL6 (collagen type VI)-related myopathies (COL6-RM) are a distinct group of inherited muscle disorders caused by mutations of COL6 genes and characterized by early-onset muscle weakness, for which no cure is available yet. Key pathophysiological features of COL6-deficient muscles involve impaired macroautophagy/autophagy, mitochondrial dysfunction, neuromuscular junction fragmentation and myofiber apoptosis. Targeting autophagy by dietary means elicited beneficial effects in both col6a1 null (col6a1-/-) mice and COL6-RM patients. We previously demonstrated that one-month per os administration of the nutraceutical spermidine reactivates autophagy and ameliorates myofiber defects in col6a1-/- mice but does not elicit functional improvement. Here we show that a 100-day-long spermidine regimen is able to rescue muscle strength in col6a1-/- mice, with also a beneficial impact on mitochondria and neuromuscular junction integrity, without any noticeable side effects. Altogether, these data provide a rationale for the application of spermidine in prospective clinical trials for COL6-RM.Abbreviations: AChR: acetylcholine receptor; BTX: bungarotoxin; CNF: centrally nucleated fibers; Colch: colchicine; COL6: collagen type VI; COL6-RM: COL6-related myopathies; MAP1LC3/LC3: microtubule-associated protein 1 light chain 3; NMJ: neuromuscular junction; Spd: spermidine; SQSTM1/p62: sequestosome 1; TA: tibialis anterior; TOMM20: translocase of outer mitochondrial membrane 20; TUNEL: terminal deoxynucleotidyl transferase dUTP-mediated nick-end labeling.
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Affiliation(s)
- Lisa Gambarotto
- Department of Molecular Medicine, University of Padova, Padova, Italy
- Department of Biology, University of Padova, Padova, Italy
| | - Samuele Metti
- Department of Molecular Medicine, University of Padova, Padova, Italy
| | - Matteo Corpetti
- Department of Molecular Medicine, University of Padova, Padova, Italy
| | - Martina Baraldo
- Department of Biomedical Sciences, University of Padova, Padova, Italy
| | - Patrizia Sabatelli
- CNR-Institute of Molecular Genetics ”Luigi Luca Cavalli-Sforza”, Unit of Bologna, Bologna, Italy
| | - Silvia Castagnaro
- Department of Molecular Medicine, University of Padova, Padova, Italy
| | - Matilde Cescon
- Department of Molecular Medicine, University of Padova, Padova, Italy
| | - Bert Blaauw
- Department of Biomedical Sciences, University of Padova, Padova, Italy
- Venetian Institute of Molecular Medicine, Padova, Italy
| | - Paolo Bonaldo
- Department of Molecular Medicine, University of Padova, Padova, Italy
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7
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Tezze C, Amendolagine FI, Nogara L, Baraldo M, Ciciliot S, Arcidiacono D, Zaramella A, Masiero G, Ferrarese G, Realdon S, Blaauw B, Detienne G, Beliën AT, Sandri M, Mercken EM. A combination of metformin and galantamine exhibits synergistic benefits in the treatment of sarcopenia. JCI Insight 2023; 8:e168787. [PMID: 37551712 PMCID: PMC10445681 DOI: 10.1172/jci.insight.168787] [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] [Subscribe] [Scholar Register] [Received: 02/03/2023] [Accepted: 06/28/2023] [Indexed: 08/09/2023] Open
Abstract
Age-associated sarcopenia, characterized by a progressive loss in muscle mass and strength, is the largest cause of frailty and disability in the elderly worldwide. Current treatments involve nonpharmacological guidelines that few subjects can abide by, highlighting the need for effective drugs. Preclinical models were employed to test the benefits of RJx-01, a combination drug composed of metformin and galantamine, on sarcopenia. In worms, RJx-01 treatment improved lifespan, locomotion, pharyngeal pumping, and muscle fiber organization. The synergistic effects of RJx-01 were recapitulated in a transgenic mouse model that displays an exacerbated aging phenotype (Opa1-/-). In these mice, RJx-01 ameliorated physical performance, muscle mass and force, neuromuscular junction stability, and systemic inflammation. RJx-01 also improved physical performance and muscle strength in 22-month-old WT mice and also improved skeletal muscle ultrastructure, mitochondrial morphology, autophagy, lysosomal function, and satellite cell content. Denervation and myofiber damage were decreased in RJx-01-treated animals compared with controls. RJx-01 improved muscle quality rather than quantity, indicating that the improvement in quality underlies the beneficial effects of the combination drug. The studies herein indicate synergistic beneficial effects of RJx-01 in the treatment of sarcopenia and support the pursuit of RJx-01 in a human clinical trial as a therapeutic intervention for sarcopenia.
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Affiliation(s)
- Caterina Tezze
- Department of Biomedical Sciences, University of Padova, Padova, Italy
- Veneto Institute of Molecular Medicine, Padova, Italy
| | - Francesco Ivan Amendolagine
- Department of Biomedical Sciences, University of Padova, Padova, Italy
- Veneto Institute of Molecular Medicine, Padova, Italy
| | - Leonardo Nogara
- Department of Biomedical Sciences, University of Padova, Padova, Italy
- Veneto Institute of Molecular Medicine, Padova, Italy
| | - Martina Baraldo
- Department of Biomedical Sciences, University of Padova, Padova, Italy
- Veneto Institute of Molecular Medicine, Padova, Italy
| | - Stefano Ciciliot
- Department of Biomedical Sciences, University of Padova, Padova, Italy
- Veneto Institute of Molecular Medicine, Padova, Italy
| | - Diletta Arcidiacono
- Gastroenterology Unit, Veneto Institute of Oncology IOV-IRCCS, Padova, Italy
| | - Alice Zaramella
- Gastroenterology Unit, Veneto Institute of Oncology IOV-IRCCS, Padova, Italy
| | - Giulio Masiero
- Department of Biomedical Sciences, University of Padova, Padova, Italy
- Veneto Institute of Molecular Medicine, Padova, Italy
| | - Giulia Ferrarese
- Department of Biomedical Sciences, University of Padova, Padova, Italy
- Veneto Institute of Molecular Medicine, Padova, Italy
| | - Stefano Realdon
- Oncological Gastroenterology, Centro di Riferimento Oncologico di Aviano (CRO) IRCCS, Aviano, Italy
| | - Bert Blaauw
- Department of Biomedical Sciences, University of Padova, Padova, Italy
- Veneto Institute of Molecular Medicine, Padova, Italy
| | | | | | - Marco Sandri
- Department of Biomedical Sciences, University of Padova, Padova, Italy
- Veneto Institute of Molecular Medicine, Padova, Italy
- Department of Medicine, McGill University, Montreal, Quebec, Canada
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8
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Marchioretti C, Zanetti G, Pirazzini M, Gherardi G, Nogara L, Andreotti R, Martini P, Marcucci L, Canato M, Nath SR, Zuccaro E, Chivet M, Mammucari C, Pacifici M, Raffaello A, Rizzuto R, Mattarei A, Desbats MA, Salviati L, Megighian A, Sorarù G, Pegoraro E, Belluzzi E, Pozzuoli A, Biz C, Ruggieri P, Romualdi C, Lieberman AP, Babu GJ, Sandri M, Blaauw B, Basso M, Pennuto M. Defective excitation-contraction coupling and mitochondrial respiration precede mitochondrial Ca 2+ accumulation in spinobulbar muscular atrophy skeletal muscle. Nat Commun 2023; 14:602. [PMID: 36746942 PMCID: PMC9902403 DOI: 10.1038/s41467-023-36185-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2022] [Accepted: 01/19/2023] [Indexed: 02/08/2023] Open
Abstract
Polyglutamine expansion in the androgen receptor (AR) causes spinobulbar muscular atrophy (SBMA). Skeletal muscle is a primary site of toxicity; however, the current understanding of the early pathological processes that occur and how they unfold during disease progression remains limited. Using transgenic and knock-in mice and patient-derived muscle biopsies, we show that SBMA mice in the presymptomatic stage develop a respiratory defect matching defective expression of genes involved in excitation-contraction coupling (ECC), altered contraction dynamics, and increased fatigue. These processes are followed by stimulus-dependent accumulation of calcium into mitochondria and structural disorganization of the muscle triads. Deregulation of expression of ECC genes is concomitant with sexual maturity and androgen raise in the serum. Consistent with the androgen-dependent nature of these alterations, surgical castration and AR silencing alleviate the early and late pathological processes. These observations show that ECC deregulation and defective mitochondrial respiration are early but reversible events followed by altered muscle force, calcium dyshomeostasis, and dismantling of triad structure.
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Affiliation(s)
- Caterina Marchioretti
- Department of Biomedical Sciences (DBS), University of Padova, 35131, Padova, Italy
- Veneto Institute of Molecular Medicine (VIMM), Padova, 35100, Italy
- Padova Neuroscience Center (PNC), Padova, 35100, Italy
- Dulbecco Telethon Institute (DTI) at the Department of Cellular, Computational and Integrative Biology (CIBIO), University of Trento, 38123, Trento, Italy
| | - Giulia Zanetti
- Department of Biomedical Sciences (DBS), University of Padova, 35131, Padova, Italy
| | - Marco Pirazzini
- Department of Biomedical Sciences (DBS), University of Padova, 35131, Padova, Italy
- CIR-Myo, Centro Interdipartimentale di Ricerca di Miologia, University of Padova, 35131, Padova, Italy
| | - Gaia Gherardi
- Department of Biomedical Sciences (DBS), University of Padova, 35131, Padova, Italy
| | - Leonardo Nogara
- Department of Biomedical Sciences (DBS), University of Padova, 35131, Padova, Italy
- Veneto Institute of Molecular Medicine (VIMM), Padova, 35100, Italy
| | - Roberta Andreotti
- Department of Biomedical Sciences (DBS), University of Padova, 35131, Padova, Italy
- Veneto Institute of Molecular Medicine (VIMM), Padova, 35100, Italy
- Padova Neuroscience Center (PNC), Padova, 35100, Italy
| | - Paolo Martini
- Department of Molecular and Translational Medicine, University of Brescia, 25121, Brescia, Italy
| | - Lorenzo Marcucci
- Department of Biomedical Sciences (DBS), University of Padova, 35131, Padova, Italy
| | - Marta Canato
- Department of Biomedical Sciences (DBS), University of Padova, 35131, Padova, Italy
| | - Samir R Nath
- Department of Pathology, University of Michigan Medical School, Ann Arbor, MI, USA
| | - Emanuela Zuccaro
- Department of Biomedical Sciences (DBS), University of Padova, 35131, Padova, Italy
- Veneto Institute of Molecular Medicine (VIMM), Padova, 35100, Italy
- Padova Neuroscience Center (PNC), Padova, 35100, Italy
| | - Mathilde Chivet
- Dulbecco Telethon Institute (DTI) at the Department of Cellular, Computational and Integrative Biology (CIBIO), University of Trento, 38123, Trento, Italy
| | - Cristina Mammucari
- Department of Biomedical Sciences (DBS), University of Padova, 35131, Padova, Italy
- CIR-Myo, Centro Interdipartimentale di Ricerca di Miologia, University of Padova, 35131, Padova, Italy
| | - Marco Pacifici
- Department of Biomedical Sciences (DBS), University of Padova, 35131, Padova, Italy
| | - Anna Raffaello
- Department of Biomedical Sciences (DBS), University of Padova, 35131, Padova, Italy
- CIR-Myo, Centro Interdipartimentale di Ricerca di Miologia, University of Padova, 35131, Padova, Italy
| | - Rosario Rizzuto
- Department of Biomedical Sciences (DBS), University of Padova, 35131, Padova, Italy
| | - Andrea Mattarei
- Department of Pharmaceutical and Pharmacological Sciences, University of Padova, 35131, Padova, Italy
| | - Maria A Desbats
- Clinical Genetics Unit, Department of Women and Children's Health, University of Padova, and Fondazione Istituto di Ricerca Pediatrica Città della Speranza, Padova, Italy
| | - Leonardo Salviati
- CIR-Myo, Centro Interdipartimentale di Ricerca di Miologia, University of Padova, 35131, Padova, Italy
- Clinical Genetics Unit, Department of Women and Children's Health, University of Padova, and Fondazione Istituto di Ricerca Pediatrica Città della Speranza, Padova, Italy
| | - Aram Megighian
- Department of Biomedical Sciences (DBS), University of Padova, 35131, Padova, Italy
- Padova Neuroscience Center (PNC), Padova, 35100, Italy
| | - Gianni Sorarù
- Padova Neuroscience Center (PNC), Padova, 35100, Italy
- Department of Neuroscience (DNS), University of Padova, 35128, Padova, Italy
| | - Elena Pegoraro
- Department of Neuroscience (DNS), University of Padova, 35128, Padova, Italy
| | - Elisa Belluzzi
- Orthopedics and Orthopedic Oncology, Department of Surgery, Oncology, and Gastroenterology DiSCOG, University-Hospital of Padova, 35128, Padova, Italy
- Musculoskeletal Pathology and Oncology Laboratory, Department of Surgery, Oncology and Gastroenterology (DiSCOG), University of Padova, 35128, Padova, Italy
| | - Assunta Pozzuoli
- Orthopedics and Orthopedic Oncology, Department of Surgery, Oncology, and Gastroenterology DiSCOG, University-Hospital of Padova, 35128, Padova, Italy
- Musculoskeletal Pathology and Oncology Laboratory, Department of Surgery, Oncology and Gastroenterology (DiSCOG), University of Padova, 35128, Padova, Italy
| | - Carlo Biz
- Orthopedics and Orthopedic Oncology, Department of Surgery, Oncology, and Gastroenterology DiSCOG, University-Hospital of Padova, 35128, Padova, Italy
| | - Pietro Ruggieri
- Orthopedics and Orthopedic Oncology, Department of Surgery, Oncology, and Gastroenterology DiSCOG, University-Hospital of Padova, 35128, Padova, Italy
| | - Chiara Romualdi
- Department of Biology, University of Padova, Padova, 35100, Italy
| | - Andrew P Lieberman
- Department of Pathology, University of Michigan Medical School, Ann Arbor, MI, USA
| | - Gopal J Babu
- Department of Cell Biology and Molecular Medicine, Rutgers, New Jersey Medical School, Newark, NJ, 07103, USA
| | - Marco Sandri
- Department of Biomedical Sciences (DBS), University of Padova, 35131, Padova, Italy
- Veneto Institute of Molecular Medicine (VIMM), Padova, 35100, Italy
| | - Bert Blaauw
- Department of Biomedical Sciences (DBS), University of Padova, 35131, Padova, Italy
- Veneto Institute of Molecular Medicine (VIMM), Padova, 35100, Italy
| | - Manuela Basso
- Department of Cellular, Computational and Integrative Biology (CIBIO), University of Trento, 38123, Trento, Italy
| | - Maria Pennuto
- Department of Biomedical Sciences (DBS), University of Padova, 35131, Padova, Italy.
- Veneto Institute of Molecular Medicine (VIMM), Padova, 35100, Italy.
- Padova Neuroscience Center (PNC), Padova, 35100, Italy.
- Dulbecco Telethon Institute (DTI) at the Department of Cellular, Computational and Integrative Biology (CIBIO), University of Trento, 38123, Trento, Italy.
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9
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Baraldo M, Zorzato S, Dondjang AHT, Geremia A, Nogara L, Dumitras AG, Canato M, Marcucci L, Nolte H, Blaauw B. Inducible deletion of raptor and mTOR from adult skeletal muscle impairs muscle contractility and relaxation. J Physiol 2022; 600:5055-5075. [PMID: 36255030 DOI: 10.1113/jp283686] [Citation(s) in RCA: 4] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2022] [Accepted: 09/20/2022] [Indexed: 01/05/2023] Open
Abstract
Skeletal muscle weakness has been associated with different pathological conditions, including sarcopenia and muscular dystrophy, and is accompanied by altered mammalian target of rapamycin (mTOR) signalling. We wanted to elucidate the functional role of mTOR in muscle contractility. Most loss-of-function studies for mTOR signalling have used the drug rapamycin to inhibit some of the signalling downstream of mTOR. However, given that rapamycin does not inhibit all mTOR signalling completely, we generated a double knockout for mTOR and for the scaffold protein of mTORC1, raptor, in skeletal muscle. We found that double knockout in mice results in a more severe phenotype compared with deletion of raptor or mTOR alone. Indeed, these animals display muscle weakness, increased fibre denervation and a slower muscle relaxation following tetanic stimulation. This is accompanied by a shift towards slow-twitch fibres and changes in the expression levels of calcium-related genes, such as Serca1 and Casq1. Double knockout mice show a decrease in calcium decay kinetics after tetanus in vivo, suggestive of a reduced calcium reuptake. In addition, RNA sequencing analysis revealed that many downregulated genes, such as Tcap and Fhod3, are linked to sarcomere organization. These results suggest a key role for mTOR signalling in maintaining proper fibre relaxation in skeletal muscle. KEY POINTS: Skeletal muscle wasting and weakness have been associated with different pathological conditions, including sarcopenia and muscular dystrophy, and are accompanied by altered mammalian target of rapamycin (mTOR) signalling. Mammalian target of rapamycin plays a crucial role in the maintenance of muscle mass and functionality. We found that the loss of both mTOR and raptor results in contractile abnormalities, with severe muscle weakness and delayed relaxation following tetanic stimulation. These results are associated with alterations in the expression of genes involved in sarcomere organization and calcium handling and with an impairment in calcium reuptake after contraction. Taken together, these results provide a mechanistic insight into the role of mTOR in muscle contractility.
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Affiliation(s)
- Martina Baraldo
- Venetian Institute of Molecular Medicine (VIMM), Padova, Italy.,Department of Biomedical Sciences, University of Padova, Padova, Italy
| | - Sabrina Zorzato
- Venetian Institute of Molecular Medicine (VIMM), Padova, Italy
| | - Achille Homère Tchampda Dondjang
- Venetian Institute of Molecular Medicine (VIMM), Padova, Italy.,Department of Biomedical Sciences, University of Padova, Padova, Italy
| | - Alessia Geremia
- Venetian Institute of Molecular Medicine (VIMM), Padova, Italy.,Department of Biomedical Sciences, University of Padova, Padova, Italy
| | - Leonardo Nogara
- Venetian Institute of Molecular Medicine (VIMM), Padova, Italy.,Department of Biomedical Sciences, University of Padova, Padova, Italy
| | - Ana Georgia Dumitras
- Venetian Institute of Molecular Medicine (VIMM), Padova, Italy.,Department of Biomedical Sciences, University of Padova, Padova, Italy
| | - Marta Canato
- Department of Biomedical Sciences, University of Padova, Padova, Italy
| | - Lorenzo Marcucci
- Department of Biomedical Sciences, University of Padova, Padova, Italy.,Center for Biosystems Dynamics Research, RIKEN, Suita, Japan
| | - Hendrik Nolte
- Institute for Genetics, Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), University of Cologne, Cologne, Germany.,Center for Molecular Medicine (CMMC), University of Cologne, Cologne, Germany
| | - Bert Blaauw
- Venetian Institute of Molecular Medicine (VIMM), Padova, Italy.,Department of Biomedical Sciences, University of Padova, Padova, Italy
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10
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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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11
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Geremia A, Sartori R, Baraldo M, Nogara L, Balmaceda V, Dumitras GA, Ciciliot S, Scalabrin M, Nolte H, Blaauw B. Activation of Akt-mTORC1 signalling reverts cancer-dependent muscle wasting. J Cachexia Sarcopenia Muscle 2022; 13:648-661. [PMID: 34741441 PMCID: PMC8818597 DOI: 10.1002/jcsm.12854] [Citation(s) in RCA: 25] [Impact Index Per Article: 12.5] [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: 06/09/2021] [Revised: 10/04/2021] [Accepted: 10/07/2021] [Indexed: 12/22/2022] Open
Abstract
BACKGROUND Cancer-related muscle wasting occurs in most cancer patients. An important regulator of adult muscle mass and function is the Akt-mTORC1 pathway. While Akt-mTORC1 signalling is important for adult muscle homeostasis, it is also a major target of numerous cancer treatments. Which role Akt-mTORC1 signalling plays during cancer cachexia in muscle is currently not known. Here, we aimed to determine how activation or inactivation of the pathway affects skeletal muscle during cancer cachexia. METHODS We used inducible, muscle-specific Raptor ko (mTORC1) mice to determine the effect of reduced mTOR signalling during cancer cachexia. On the contrary, in order to understand if skeletal muscles maintain their anabolic capacity and if activation of Akt-mTORC1 signalling can reverse cancer cachexia, we generated mice in which we can inducibly activate Akt specifically in skeletal muscles. RESULTS We found that mTORC1 signalling is impaired during cancer cachexia, using the Lewis lung carcinoma and C26 colon cancer model, and is accompanied by a reduction in protein synthesis rates of 57% (P < 0.01). Further reduction of mTOR signalling, as seen in Raptor ko animals, leads to a 1.5-fold increase in autophagic flux (P > 0.001), but does not further increase muscle wasting. On the other hand, activation of Akt-mTORC1 signalling in already cachectic animals completely reverses the 15-20% loss in muscle mass and force (P < 0.001). Interestingly, Akt activation only in skeletal muscle completely normalizes the transcriptional deregulation observed in cachectic muscle, despite having no effect on tumour size or spleen mass. In addition to stimulating muscle growth, it is also sufficient to prevent the increase in protein degradation normally observed in muscles from tumour-bearing animals. CONCLUSIONS Here, we show that activation of Akt-mTORC1 signalling is sufficient to completely revert cancer-dependent muscle wasting. Intriguingly, these results show that skeletal muscle maintains its anabolic capacities also during cancer cachexia, possibly giving a rationale behind some of the beneficial effects observed in exercise in cancer patients.
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Affiliation(s)
- Alessia Geremia
- Veneto Institute of Molecular Medicine (VIMM), Padua, Italy.,Department of Biomedical Sciences, University of Padua, Padua, Italy
| | | | - Martina Baraldo
- Veneto Institute of Molecular Medicine (VIMM), Padua, Italy.,Department of Biomedical Sciences, University of Padua, Padua, Italy
| | - Leonardo Nogara
- Veneto Institute of Molecular Medicine (VIMM), Padua, Italy.,Department of Biomedical Sciences, University of Padua, Padua, Italy
| | | | - Georgia Ana Dumitras
- Veneto Institute of Molecular Medicine (VIMM), Padua, Italy.,Department of Biomedical Sciences, University of Padua, Padua, Italy
| | | | - Marco Scalabrin
- Veneto Institute of Molecular Medicine (VIMM), Padua, Italy.,Department of Biomedical Sciences, University of Padua, Padua, Italy
| | - Hendrik Nolte
- Max Planck Institute for Biology of Ageing, Cologne, Germany
| | - Bert Blaauw
- Veneto Institute of Molecular Medicine (VIMM), Padua, Italy.,Department of Biomedical Sciences, University of Padua, Padua, Italy
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12
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Baraldo M, Nogara L, Dumitras GA, Tchampda Dondjang AH, Geremia A, Scalabrin M, Türk C, Telkamp F, Zentilin L, Giacca M, Krüger M, Blaauw B. Raptor is critical for increasing the mitochondrial proteome and skeletal muscle force during hypertrophy. FASEB J 2021; 35:e22031. [PMID: 34767636 DOI: 10.1096/fj.202101054rr] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [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: 06/23/2021] [Revised: 10/11/2021] [Accepted: 10/22/2021] [Indexed: 12/16/2022]
Abstract
Loss of skeletal muscle mass and force is of critical importance in numerous pathologies, like age-related sarcopenia or cancer. It has been shown that the Akt-mTORC1 pathway is critical for stimulating adult muscle mass and function, however, it is unknown if mTORC1 is the only mediator downstream of Akt and which intracellular processes are required for functional muscle growth. Here, we show that loss of Raptor reduces muscle hypertrophy after Akt activation and completely prevents increases in muscle force. Interestingly, the residual hypertrophy after Raptor deletion can be completely prevented by administration of the mTORC1 inhibitor rapamycin. Using a quantitative proteomics approach we find that loss of Raptor affects the increases in mitochondrial proteins, while rapamycin mainly affects ribosomal proteins. Taken together, these results suggest that mTORC1 is the key mediator of Akt-dependent muscle growth and its regulation of the mitochondrial proteome is critical for increasing muscle force.
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Affiliation(s)
- Martina Baraldo
- Venetian Institute of Molecular Medicine (VIMM), Padova, Italy.,Department of Biomedical Sciences, University of Padova, Padova, Italy
| | - Leonardo Nogara
- Venetian Institute of Molecular Medicine (VIMM), Padova, Italy.,Department of Biomedical Sciences, University of Padova, Padova, Italy
| | | | | | - Alessia Geremia
- Venetian Institute of Molecular Medicine (VIMM), Padova, Italy.,Department of Biomedical Sciences, University of Padova, Padova, Italy
| | - Marco Scalabrin
- Department of Biomedical Sciences, University of Padova, Padova, Italy
| | - Clara Türk
- Institute for Genetics, Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), University of Cologne, Cologne, Germany
| | - Frederik Telkamp
- Institute for Genetics, Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), University of Cologne, Cologne, Germany
| | - Lorena Zentilin
- AAV Vector Unit, International Centre for Genetic Engineering and Biotechnology (ICGEB), Trieste, Italy
| | - Mauro Giacca
- School of Cardiovascular Medicine & Sciences, King's College London, British Heart Foundation Centre of Research Excellence, London, UK
| | - Marcus Krüger
- Institute for Genetics, Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), University of Cologne, Cologne, Germany.,Center for Molecular Medicine (CMMC), University of Cologne, Cologne, Germany
| | - Bert Blaauw
- Venetian Institute of Molecular Medicine (VIMM), Padova, Italy.,Department of Biomedical Sciences, University of Padova, Padova, Italy
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13
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Scano M, Benetollo A, Nogara L, Bondì M, Barba FD, Soardi M, Furlan S, Akyurek EE, Caccin P, Carotti M, Sacchetto R, Blaauw B, Sandonà D. CFTR corrector C17 is effective in muscular dystrophy, in vivo proof of concept in LGMDR3. Hum Mol Genet 2021; 31:499-509. [PMID: 34505136 PMCID: PMC8863415 DOI: 10.1093/hmg/ddab260] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2021] [Revised: 08/23/2021] [Accepted: 09/02/2021] [Indexed: 11/13/2022] Open
Abstract
Limb-girdle muscular dystrophy R3 (LGMDR3) is caused by mutations in the SGCA gene coding for α-sarcoglycan (SG). Together with β- γ- and δ-SG, α-SG forms a tetramer embedded in the dystrophin associated protein complex crucial for protecting the sarcolemma from mechanical stresses elicited by muscle contraction. Most LGMDR3 cases are due to missense mutations, which result in non-properly folded, even though potentially functional α-SG. These mutants are prematurely discarded by the cell quality control. Lacking one subunit, the SG-complex is disrupted. The resulting loss of function leads to sarcolemma instability, muscle fiber damage and progressive limb muscle weakness. LGMDR3 is severely disabling and, unfortunately, still incurable. Here, we propose the use of small molecules, belonging to the class of cystic fibrosis transmembrane regulator (CFTR) correctors, for recovering mutants of α-SG defective in folding and trafficking. Specifically, CFTR corrector C17 successfully rerouted the SG-complex containing the human R98H-α-SG to the sarcolemma of hind-limb muscles of a novel LGMDR3 murine model. Notably, the muscle force of the treated model animals was fully recovered. To our knowledge, this is the first time that a compound designated for cystic fibrosis is successfully tested in a muscular dystrophy and may represent a novel paradigm of treatment for LGMDR3 as well as different other indications in which a potentially functional protein is prematurely discarded as folding-defective. Furthermore, the use of small molecules for recovering the endogenous mutated SG has an evident advantage over complex procedures such as gene or cell transfer.
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Affiliation(s)
- Martina Scano
- Department of Biomedical Sciences, University of Padova, Italy
| | | | - Leonardo Nogara
- Venetian Institute of Molecular Medicine, University of Padova, Italy
| | - Michela Bondì
- Department of Biomedical Sciences, University of Padova, Italy
| | | | - Michela Soardi
- Department of Biomedical Sciences, University of Padova, Italy
| | - Sandra Furlan
- Neuroscience Institute - Italian National Research Council (CNR), Italy
| | - Eylem Emek Akyurek
- Department of Comparative Biomedicine and Food Science, University of Padova, Italy
| | - Paola Caccin
- Department of Biomedical Sciences, University of Padova, Italy
| | | | - Roberta Sacchetto
- Department of Comparative Biomedicine and Food Science, University of Padova, Italy
| | - Bert Blaauw
- Department of Biomedical Sciences, University of Padova, Italy.,Venetian Institute of Molecular Medicine, University of Padova, Italy
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14
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Bock T, Türk C, Aravamudhan S, Keufgens L, Bloch W, Rozsivalova DH, Romanello V, Nogara L, Blaauw B, Trifunovic A, Braun T, Krüger M. PERM1 interacts with the MICOS-MIB complex to connect the mitochondria and sarcolemma via ankyrin B. Nat Commun 2021; 12:4900. [PMID: 34385433 PMCID: PMC8361071 DOI: 10.1038/s41467-021-25185-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [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: 05/20/2020] [Accepted: 07/20/2021] [Indexed: 12/16/2022] Open
Abstract
Skeletal muscle subsarcolemmal mitochondria (SSM) and intermyofibrillar mitochondria subpopulations have distinct metabolic activity and sensitivity, though the mechanisms that localize SSM to peripheral areas of muscle fibers are poorly understood. A protein interaction study and complexome profiling identifies PERM1 interacts with the MICOS-MIB complex. Ablation of Perm1 in mice reduces muscle force, decreases mitochondrial membrane potential and complex I activity, and reduces the numbers of SSM in skeletal muscle. We demonstrate PERM1 interacts with the intracellular adaptor protein ankyrin B (ANKB) that connects the cytoskeleton to the plasma membrane. Moreover, we identify a C-terminal transmembrane helix that anchors PERM1 into the outer mitochondrial membrane. We conclude PERM1 functions in the MICOS-MIB complex and acts as an adapter to connect the mitochondria with the sarcolemma via ANKB.
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Affiliation(s)
- Theresa Bock
- Institute for Genetics, Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), Cologne, Germany
| | - Clara Türk
- BASF SE, Metabolomics and Proteomics, Ludwigshafen am Rhein, Germany
| | | | - Lena Keufgens
- Institute for Genetics, Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), Cologne, Germany
| | - Wilhelm Bloch
- Department of Molecular and Cellular Sport Medicine, Institute of Sport Medicine and Cardiovascular Research, German Sport University Cologne, Cologne, Germany
| | - Dieu Hien Rozsivalova
- Institute for Genetics, Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), Cologne, Germany
| | - Vanina Romanello
- Venetian Institute of Molecular Medicine (VIMM), Department of Biomedical Sciences Padova, University of Padova, Padova, Italy
| | - Leonardo Nogara
- Venetian Institute of Molecular Medicine (VIMM), Department of Biomedical Sciences Padova, University of Padova, Padova, Italy
| | - Bert Blaauw
- Venetian Institute of Molecular Medicine (VIMM), Department of Biomedical Sciences Padova, University of Padova, Padova, Italy
| | - Aleksandra Trifunovic
- Institute for Genetics, Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), Cologne, Germany
- Center for Molecular Medicine (CMMC), University of Cologne, Cologne, Germany
| | - Thomas Braun
- Max Planck Institute for Heart and Lung Research, Bad Nauheim, Germany
| | - Marcus Krüger
- Institute for Genetics, Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), Cologne, Germany.
- Center for Molecular Medicine (CMMC), University of Cologne, Cologne, Germany.
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15
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Tokarz J, Möller G, Artati A, Huber S, Zeigerer A, Blaauw B, Adamski J, Dyar KA. Common Muscle Metabolic Signatures Highlight Arginine and Lysine Metabolism as Potential Therapeutic Targets to Combat Unhealthy Aging. Int J Mol Sci 2021; 22:ijms22157958. [PMID: 34360722 PMCID: PMC8348621 DOI: 10.3390/ijms22157958] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2021] [Revised: 07/21/2021] [Accepted: 07/22/2021] [Indexed: 12/12/2022] Open
Abstract
Biological aging research is expected to reveal modifiable molecular mechanisms that can be harnessed to slow or possibly reverse unhealthy trajectories. However, there is first an urgent need to define consensus molecular markers of healthy and unhealthy aging. Established aging hallmarks are all linked to metabolism, and a ‘rewired’ metabolic circuitry has been shown to accelerate or delay biological aging. To identify metabolic signatures distinguishing healthy from unhealthy aging trajectories, we performed nontargeted metabolomics on skeletal muscles from 2-month-old and 21-month-old mice, and after dietary and lifestyle interventions known to impact biological aging. We hypothesized that common metabolic signatures would highlight specific pathways and processes promoting healthy aging, while revealing the molecular underpinnings of unhealthy aging. Here, we report 50 metabolites that commonly distinguished aging trajectories in all cohorts, including 18 commonly reduced under unhealthy aging and 32 increased. We stratified these metabolites according to known relationships with various aging hallmarks and found the greatest associations with oxidative stress and nutrient sensing. Collectively, our data suggest interventions aimed at maintaining skeletal muscle arginine and lysine may be useful therapeutic strategies to minimize biological aging and maintain skeletal muscle health, function, and regenerative capacity in old age.
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Affiliation(s)
- Janina Tokarz
- Institute for Diabetes and Cancer, Helmholtz Zentrum München, German Research Center for Environmental Health, 85764 Neuherberg, Germany; (J.T.); (G.M.); (A.Z.)
- German Center for Diabetes Research (DZD), 85764 Neuherberg, Germany
| | - Gabriele Möller
- Institute for Diabetes and Cancer, Helmholtz Zentrum München, German Research Center for Environmental Health, 85764 Neuherberg, Germany; (J.T.); (G.M.); (A.Z.)
- German Center for Diabetes Research (DZD), 85764 Neuherberg, Germany
| | - Anna Artati
- Metabolomics and Proteomics Core, Helmholtz Zentrum München, German Research Center for Environmental Health, 85764 Neuherberg, Germany; (A.A.); (S.H.)
| | - Simone Huber
- Metabolomics and Proteomics Core, Helmholtz Zentrum München, German Research Center for Environmental Health, 85764 Neuherberg, Germany; (A.A.); (S.H.)
| | - Anja Zeigerer
- Institute for Diabetes and Cancer, Helmholtz Zentrum München, German Research Center for Environmental Health, 85764 Neuherberg, Germany; (J.T.); (G.M.); (A.Z.)
- German Center for Diabetes Research (DZD), 85764 Neuherberg, Germany
- Joint Heidelberg-IDC Translational Diabetes Program, Inner Medicine 1, Heidelberg University Hospital, 69120 Heidelberg, Germany
| | - Bert Blaauw
- Department of Biomedical Sciences, University of Padova, 35129 Padova, Italy;
- Venetian Institute of Molecular Medicine, 35129 Padova, Italy
| | - Jerzy Adamski
- Institute of Experimental Genetics, Helmholtz Zentrum München, German Research Center for Environmental Health, 85764 Neuherberg, Germany;
- Institute of Biochemistry, Faculty of Medicine, University of Ljubljana, Vrazov Trg 2, 1000 Ljubljana, Slovenia
- Department of Biochemistry, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 117596, Singapore
| | - Kenneth Allen Dyar
- Institute for Diabetes and Cancer, Helmholtz Zentrum München, German Research Center for Environmental Health, 85764 Neuherberg, Germany; (J.T.); (G.M.); (A.Z.)
- German Center for Diabetes Research (DZD), 85764 Neuherberg, Germany
- Correspondence:
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16
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Magarotto F, Hochuli A, Sgrô A, Andreetta M, Grassi M, Saggioro M, Nogara L, Tolomeo A, Francescato R, Collino F, Germano G, Caicci F, Maghin E, Piccoli M, Blaauw B, Gamba P, Muraca M, Pozzobon M. Extracellular vesicles in combination with a biological scaffold allow the regain of muscle function after volumetric muscle loss. Cytotherapy 2021. [DOI: 10.1016/s1465324921005090] [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: 10/21/2022]
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17
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Abstract
Significance: Humans cannot synthesize ascorbic acid (AscH2) (vitamin C), so deficiencies in dietary AscH2 cause the life-threatening disease of scurvy and many other diseases. After oral ingestion, plasma AscH2 concentrations are strictly controlled by transporters, which are required for entry into the cell and into intracellular organelles. Recent Advances: Besides its general antioxidant function, AscH2 is a cofactor for endoplasmic reticulum (ER)-localized collagen hydroxylases. Its important role in ER homeostasis is also highlighted by the fact that AscH2 deficiency in auxotrophic species triggers ER stress. Critical Issues: Characterizations of the molecular basis of diseases suggest that intracellular AscH2 deficiency is due not only to limited dietary access but also to its limited intracellular transport and net loss under conditions of intracellular hyperoxidation in the ER. This essay will offer an overview of the different transporters of vitamin C regulating its intracellular concentration, its function inside the ER, and the phenotypes of the diseases that can be triggered by increased depletion of this vitamin in the ER. Future Directions: When considering the benefits of increasing dietary AscH2, it is important to consider pharmacokinetic differences in the bioavailability between orally and intravenously administered AscH2: the latter bypasses intestinal absorption and is, therefore, the only route that can lead to the high plasma concentrations that may provide some health effects, and it is this route that needs to be chosen in clinical trials for those diseases associated with a deficiency of AscH2. Antioxid. Redox Signal. 34, 845-855.
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Affiliation(s)
- Diego Pozzer
- Istituto di Ricerche Farmacologiche Mario Negri-IRCCS, Milan, Italy
| | | | - Bert Blaauw
- Department of Biomedical Sciences, University of Padua, Padua, Italy
- Venetian Institute of Molecular Medicine, Padua, Italy
| | - Orazio Cantoni
- Department of Biomolecular Sciences, University of Urbino Carlo Bo, Urbino, Italy
| | - Ester Zito
- Istituto di Ricerche Farmacologiche Mario Negri-IRCCS, Milan, Italy
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18
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Costantini M, Testa S, Fornetti E, Fuoco C, Sanchez Riera C, Nie M, Bernardini S, Rainer A, Baldi J, Zoccali C, Biagini R, Castagnoli L, Vitiello L, Blaauw B, Seliktar D, Święszkowski W, Garstecki P, Takeuchi S, Cesareni G, Cannata S, Gargioli C. Biofabricating murine and human myo-substitutes for rapid volumetric muscle loss restoration. EMBO Mol Med 2021; 13:e12778. [PMID: 33587336 PMCID: PMC7933978 DOI: 10.15252/emmm.202012778] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [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: 05/19/2020] [Revised: 01/05/2021] [Accepted: 01/12/2021] [Indexed: 12/31/2022] Open
Abstract
The importance of skeletal muscle tissue is undoubted being the controller of several vital functions including respiration and all voluntary locomotion activities. However, its regenerative capability is limited and significant tissue loss often leads to a chronic pathologic condition known as volumetric muscle loss. Here, we propose a biofabrication approach to rapidly restore skeletal muscle mass, 3D histoarchitecture, and functionality. By recapitulating muscle anisotropic organization at the microscale level, we demonstrate to efficiently guide cell differentiation and myobundle formation both in vitro and in vivo. Of note, upon implantation, the biofabricated myo-substitutes support the formation of new blood vessels and neuromuscular junctions-pivotal aspects for cell survival and muscle contractile functionalities-together with an advanced muscle mass and force recovery. Altogether, these data represent a solid base for further testing the myo-substitutes in large animal size and a promising platform to be eventually translated into clinical scenarios.
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Affiliation(s)
- Marco Costantini
- Institute of Physical ChemistryPolish Academy of SciencesWarsawPoland
| | - Stefano Testa
- Department of BiologyRome University Tor VergataRomeItaly
| | | | - Claudia Fuoco
- Department of BiologyRome University Tor VergataRomeItaly
| | | | - Minghao Nie
- Department of Mechano‐InformaticsGraduate School of Information Science and TechnologyThe University of TokyoTokyoJapan
| | | | - Alberto Rainer
- Department of EngineeringUniversità Campus Bio‐Medico di RomaRomeItaly
- Institute of Nanotechnology (NANOTEC)National Research CouncilLecceItaly
| | - Jacopo Baldi
- IRCCS Regina Elena National Cancer InstituteRomeItaly
| | | | | | | | | | - Bert Blaauw
- Department of Biomedical Science and Venetian Institute of Molecular MedicineUniversity of PadovaPadovaItaly
| | - Dror Seliktar
- Department of Biomedical EngineeringTechion InstituteHaifaIsrael
| | - Wojciech Święszkowski
- Faculty of Materials Science and EngineeringWarsaw University of TechnologyWarsawPoland
| | - Piotr Garstecki
- Institute of Physical ChemistryPolish Academy of SciencesWarsawPoland
| | - Shoji Takeuchi
- Department of Mechano‐InformaticsGraduate School of Information Science and TechnologyThe University of TokyoTokyoJapan
- Institute of Industrial ScienceThe University of TokyoTokyoJapan
| | - Gianni Cesareni
- Department of BiologyRome University Tor VergataRomeItaly
- IRCCS Fondazione Santa LuciaRomeItaly
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19
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Abstract
Skeletal muscle hypertrophy can be induced by hormones and growth factors acting directly as positive regulators of muscle growth or indirectly by neutralizing negative regulators, and by mechanical signals mediating the effect of resistance exercise. Muscle growth during hypertrophy is controlled at the translational level, through the stimulation of protein synthesis, and at the transcriptional level, through the activation of ribosomal RNAs and muscle-specific genes. mTORC1 has a central role in the regulation of both protein synthesis and ribosomal biogenesis. Several transcription factors and co-activators, including MEF2, SRF, PGC-1α4, and YAP promote the growth of the myofibers. Satellite cell proliferation and fusion is involved in some but not all muscle hypertrophy models.
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Affiliation(s)
| | - Carlo Reggiani
- Department of Biomedical Sciences, University of Padova, Italy.,Science and Research Centre Koper, Institute for Kinesiology Research, Koper, Slovenia
| | | | - Bert Blaauw
- Venetian Institute of Molecular Medicine, Padova, Italy.,Department of Biomedical Sciences, University of Padova, Italy
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20
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Magarotto F, Sgrò A, Dorigo Hochuli AH, Andreetta M, Grassi M, Saggioro M, Nogara L, Tolomeo AM, Francescato R, Collino F, Germano G, Caicci F, Maghin E, Piccoli M, Jurga M, Blaauw B, Gamba P, Muraca M, Pozzobon M. Muscle functional recovery is driven by extracellular vesicles combined with muscle extracellular matrix in a volumetric muscle loss murine model. Biomaterials 2021; 269:120653. [PMID: 33461058 DOI: 10.1016/j.biomaterials.2021.120653] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [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: 08/07/2020] [Revised: 12/26/2020] [Accepted: 01/02/2021] [Indexed: 12/23/2022]
Abstract
Biological scaffolds derived from decellularized tissues are being investigated as a promising approach to repair volumetric muscle losses (VML). Indeed, extracellular matrix (ECM) from decellularized tissues is highly biocompatible and mimics the original tissue. However, the development of fibrosis and the muscle stiffness still represents a major problem. Intercellular signals mediating tissue repair are conveyed via extracellular vesicles (EVs), biologically active nanoparticles secreted by the cells. This work aimed at using muscle ECM and human EVs derived from Wharton Jelly mesenchymal stromal cells (MSC EVs) to boost tissue regeneration in a VML murine model. Mice transplanted with muscle ECM and treated with PBS or MSC EVs were analyzed after 7 and 30 days. Flow cytometry, tissue analysis, qRT-PCR and physiology test were performed. We demonstrated that angiogenesis and myogenesis were enhanced while fibrosis was reduced after EV treatment. Moreover, the inflammation was directed toward tissue repair. M2-like, pro-regenerative macrophages were significantly increased in the MSC EVs treated group compared to control. Strikingly, the histological improvements were associated with enhanced functional recovery. These results suggest that human MSC EVs can be a naturally-derived boost able to ameliorate the efficacy of tissue-specific ECM in muscle regeneration up to the restored tissue function.
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Affiliation(s)
- Fabio Magarotto
- Stem Cells and Regenerative Medicine Lab, Institute of Pediatric Research Città Della Speranza, Padova, Italy; Department of Women and Children Health, University of Padova, Italy
| | - Alberto Sgrò
- Department of Women and Children Health, University of Padova, Italy
| | | | - Marina Andreetta
- Department of Women and Children Health, University of Padova, Italy
| | - Michele Grassi
- Department of Women and Children Health, University of Padova, Italy
| | - Mattia Saggioro
- Stem Cells and Regenerative Medicine Lab, Institute of Pediatric Research Città Della Speranza, Padova, Italy; Department of Women and Children Health, University of Padova, Italy
| | - Leonardo Nogara
- Biomedical Sciences Department, University of Padova, Italy; Venetian Institute of Molecular Medicine (VIMM), Padova, Italy
| | - Anna Maria Tolomeo
- Department of Women and Children Health, University of Padova, Italy; L.i.f.e.L.a.b. Program, Consorzio per La Ricerca Sanitaria (CORIS), Veneto Region, Padova, Italy
| | - Riccardo Francescato
- Stem Cells and Regenerative Medicine Lab, Institute of Pediatric Research Città Della Speranza, Padova, Italy
| | - Federica Collino
- Laboratory of Translational Research in Paediatric Nephro-urology, Fondazione Ca' Granada IRCCS Ospedale Maggiore Policlinico, Milano, Italy
| | - Giuseppe Germano
- Institute of Pediatric Research Città Della Speranza, Padova, Italy
| | | | - Edoardo Maghin
- Department of Women and Children Health, University of Padova, Italy; Tissue Engineering Lab, Institute of Pediatric Research Città Della Speranza, Padova, Italy
| | - Martina Piccoli
- Tissue Engineering Lab, Institute of Pediatric Research Città Della Speranza, Padova, Italy
| | | | - Bert Blaauw
- Biomedical Sciences Department, University of Padova, Italy; Venetian Institute of Molecular Medicine (VIMM), Padova, Italy
| | - Piergiorgio Gamba
- Department of Women and Children Health, University of Padova, Italy
| | - Maurizio Muraca
- Department of Women and Children Health, University of Padova, Italy; Institute of Pediatric Research Città Della Speranza, Padova, Italy; L.i.f.e.L.a.b. Program, Consorzio per La Ricerca Sanitaria (CORIS), Veneto Region, Padova, Italy
| | - Michela Pozzobon
- Stem Cells and Regenerative Medicine Lab, Institute of Pediatric Research Città Della Speranza, Padova, Italy; Department of Women and Children Health, University of Padova, Italy.
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21
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Metti S, Gambarotto L, Chrisam M, La Spina M, Baraldo M, Braghetta P, Blaauw B, Bonaldo P. Corrigendum: The Polyphenol Pterostilbene Ameliorates the Myopathic Phenotype of Collagen VI Deficient Mice via Autophagy Induction. Front Cell Dev Biol 2021; 8:615542. [PMID: 33585450 PMCID: PMC7873914 DOI: 10.3389/fcell.2020.615542] [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] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2020] [Accepted: 12/10/2020] [Indexed: 11/17/2022] Open
Affiliation(s)
- Samuele Metti
- Department of Molecular Medicine, University of Padova, Padua, Italy
| | - Lisa Gambarotto
- Department of Molecular Medicine, University of Padova, Padua, Italy
| | - Martina Chrisam
- Department of Molecular Medicine, University of Padova, Padua, Italy
| | - Martina La Spina
- Department of Biomedical Sciences, University of Padova, Padua, Italy
| | - Martina Baraldo
- Department of Biomedical Sciences, University of Padova, Padua, Italy
| | - Paola Braghetta
- Department of Molecular Medicine, University of Padova, Padua, Italy
| | - Bert Blaauw
- Department of Biomedical Sciences, University of Padova, Padua, Italy.,Venetian Institute of Molecular Medicine, Padua, Italy
| | - Paolo Bonaldo
- Department of Molecular Medicine, University of Padova, Padua, Italy.,CRIBI Biotechnology Center, University of Padova, Padua, Italy
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22
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Rindom E, Herskind J, Blaauw B, Overgaard K, Vissing K, Paoli FV. Concomitant excitation and tension development are required for myocellular gene expression and protein synthesis in rat skeletal muscle. Acta Physiol (Oxf) 2021; 231:e13540. [PMID: 32687678 DOI: 10.1111/apha.13540] [Citation(s) in RCA: 9] [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] [Received: 12/20/2019] [Revised: 07/12/2020] [Accepted: 07/14/2020] [Indexed: 02/06/2023]
Abstract
AIM Loading-induced tension development is often assumed to constitute an independent cue to initiate muscle protein synthesis following resistance exercise. However, with traditional physiological models of resistance exercise, changes in loading-induced tension development also reflect changes in neural activation patterns, and direct evidence for a mechanosensitive mechanism is therefore limited. Here, we sought to examine the importance of excitation and tension development per se on initiation of signalling, gene transcription and protein synthesis in rat skeletal muscle. METHODS Isolated rat extensor digitorum longus muscles were allocated to the following interventions: (a) Excitation-induced eccentric contractions (ECC); (b) Passive stretching without excitation (PAS); (c) Excitation with inhibition of contractions (STIM + IMA ) and; (d) Excitation in combination with both inhibition of contractions and PAS (STIM + IMA + PAS). Assessment of transcriptional and translational signalling, gene transcription and acute muscle protein synthesis was compared in stimulated vs contra-lateral non-stimulated control muscle. RESULTS Protein synthesis increased solely in muscles subjected to a combination of excitation and tension development (ECC and STIM + IMA + PAS). The same pattern was true for p38 mitogen-activated protein kinase signalling for gene transcription as well as for gene transcription of immediate early genes FOS and JUN. In contrast, mechanistic target of rapamycin Complex 1 signalling for translation initiation increased in all muscles subjected to increased tension development (ECC and STIM + IMA + PAS as well as PAS). CONCLUSIONS The current study suggests that exercise-induced increases in protein synthesis as well as transcriptional signalling is dependent on the concomitant effect of excitation and tension development, whereas signalling for translation initiation is only dependent of tension development per se.
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Affiliation(s)
- Emil Rindom
- Department of Biomedicine Aarhus University Aarhus Denmark
| | - Jon Herskind
- Section for Sport Science Department of Public Health Aarhus University Aarhus Denmark
| | - Bert Blaauw
- Department of Biomedical Sciences University of Padova Padova Italy
| | - Kristian Overgaard
- Section for Sport Science Department of Public Health Aarhus University Aarhus Denmark
| | - Kristian Vissing
- Section for Sport Science Department of Public Health Aarhus University Aarhus Denmark
| | - Frank V. Paoli
- Department of Biomedicine Aarhus University Aarhus Denmark
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23
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Metti S, Gambarotto L, Chrisam M, Baraldo M, Braghetta P, Blaauw B, Bonaldo P. The Polyphenol Pterostilbene Ameliorates the Myopathic Phenotype of Collagen VI Deficient Mice via Autophagy Induction. Front Cell Dev Biol 2020; 8:580933. [PMID: 33134297 PMCID: PMC7550465 DOI: 10.3389/fcell.2020.580933] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [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: 07/07/2020] [Accepted: 09/03/2020] [Indexed: 12/20/2022] Open
Abstract
The induction of autophagy, the catabolic pathway by which damaged or unnecessary cellular components are subjected to lysosome-mediated degradation and recycling, is impaired in Collagen VI (COL6) null mice and COL6-related myopathies. This autophagic impairment causes an accumulation of dysfunctional mitochondria, which in turn leads to myofiber degeneration. Our previous work showed that reactivation of autophagy in COL6-related myopathies is beneficial for muscle structure and function both in the animal model and in patients. Here we show that pterostilbene (Pt)-a non-toxic polyphenol, chemically similar to resveratrol but with a higher bioavailability and metabolic stability-strongly promotes in vivo autophagic flux in the skeletal muscle of both wild-type and COL6 null mice. Reactivation of autophagy in COL6-deficient muscles was also paralleled by several beneficial effects, including significantly decreased incidence of spontaneous apoptosis, recovery of ultrastructural defects and muscle remodeling. These findings point at Pt as an effective autophagy-inducing nutraceutical for skeletal muscle with great potential in counteracting the major pathogenic hallmarks of COL6-related myopathies, a valuable feature that may be also beneficial in other muscle pathologies characterized by defective regulation of the autophagic machinery.
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Affiliation(s)
- Samuele Metti
- Department of Molecular Medicine, University of Padova, Padua, Italy
| | - Lisa Gambarotto
- Department of Molecular Medicine, University of Padova, Padua, Italy
| | - Martina Chrisam
- Department of Molecular Medicine, University of Padova, Padua, Italy
| | - Martina Baraldo
- Department of Biomedical Sciences, University of Padova, Padua, Italy
| | - Paola Braghetta
- Department of Molecular Medicine, University of Padova, Padua, Italy
| | - Bert Blaauw
- Department of Biomedical Sciences, University of Padova, Padua, Italy.,Venetian Institute of Molecular Medicine, Padua, Italy
| | - Paolo Bonaldo
- Department of Molecular Medicine, University of Padova, Padua, Italy.,CRIBI Biotechnology Center, University of Padova, Padua, Italy
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24
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Germinario E, Bondì M, Blaauw B, Betto R, Danieli-Betto D. Reduction of circulating sphingosine-1-phosphate worsens mdx soleus muscle dystrophic phenotype. Exp Physiol 2020; 105:1895-1906. [PMID: 32897592 DOI: 10.1113/ep088603] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [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: 03/12/2020] [Accepted: 09/02/2020] [Indexed: 12/13/2022]
Abstract
NEW FINDINGS What is the central question of the study? What are the consequences of reducing circulating sphingosine-1-phosphate (S1P) for muscle physiology in the murine model of Duchenne muscular dystrophy (DMD)? What is the main result and its importance? Reduction of the circulating S1P level in mdx mice aggravates the dystrophic phenotype, as seen by an increase in fibre atrophy, fibrosis and loss of specific force, suggesting that S1P signalling is a potential therapeutic target in DMD. Although further studies are needed, plasma S1P levels have the intriguing possibility of being used as a biomarker for disease severity, an important issue in DMD. ABSTRACT Sphingosine-1-phosphate (S1P) is an important regulator of skeletal muscle properties. The dystrophin-deficient mdx mouse possesses low levels of S1P (∼50%) compared with wild type. Increased S1P availability was demonstrated to ameliorate the dystrophic phenotype in Drosophila and in mdx mice. Here, we analysed the effects produced by further reduction of S1P availability on the mass, force and regenerative capacity of dystrophic mdx soleus. Circulating S1P was neutralized by a specific anti-S1P antibody (S1P-Ab) known to lower the extracellular concentration of this signalling lipid. The S1P-Ab was administered intraperitoneally in adult mdx mice every 2 days for the duration of experiments. Soleus muscle properties were analysed 7 or 14 days after the first injection. The decreased availability of circulating S1P after the 14 day treatment reduced mdx soleus fibre cross-sectional area (-16%, P < 0.05), an effect that was associated with an increase in markers of proteolytic (MuRF1 and atrogin-1) and autophagic (p62 and LC3-II/LC3-I ratio) pathways. Moreover, an increase of fibrosis was also observed (+26%, P < 0.05). Notably, the treatment also caused a reduction of specific tetanic tension (-29%, P < 0.05). The mdx soleus regenerative capacity was only slightly influenced by reduced S1P. In conclusion, neutralization of circulating S1P reduces the mass and specific force and increases fibrosis of mdx soleus muscle, thus worsening the dystrophic phenotype. The results confirm that active, functional S1P signalling might counteract the progression of soleus mdx pathology and validate the pathway as a potential therapeutic target for muscular dystrophies.
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Affiliation(s)
- Elena Germinario
- Department of Biomedical Sciences, University of Padova, Padova, Italy.,Interuniversity Institute of Myology, Italy
| | - Michela Bondì
- Department of Biomedical Sciences, University of Padova, Padova, Italy
| | - Bert Blaauw
- Department of Biomedical Sciences, University of Padova, Padova, Italy.,Interuniversity Institute of Myology, Italy
| | - Romeo Betto
- Interuniversity Institute of Myology, Italy.,CNR-Institute for Neuroscience, CNR, Padova, Italy
| | - Daniela Danieli-Betto
- Department of Biomedical Sciences, University of Padova, Padova, Italy.,Interuniversity Institute of Myology, Italy
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25
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Solagna F, Nogara L, Dyar KA, Greulich F, Mir AA, Türk C, Bock T, Geremia A, Baraldo M, Sartori R, Farup J, Uhlenhaut H, Vissing K, Krüger M, Blaauw B. Exercise-dependent increases in protein synthesis are accompanied by chromatin modifications and increased MRTF-SRF signalling. Acta Physiol (Oxf) 2020; 230:e13496. [PMID: 32408395 PMCID: PMC7507144 DOI: 10.1111/apha.13496] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [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: 12/04/2019] [Revised: 05/06/2020] [Accepted: 05/06/2020] [Indexed: 12/13/2022]
Abstract
AIM Resistance exercise increases muscle mass over time. However, the early signalling events leading to muscle growth are not yet well-defined. Here, we aim to identify new signalling pathways important for muscle remodelling after exercise. METHODS We performed a phosphoproteomics screen after a single bout of exercise in mice. As an exercise model we used unilateral electrical stimulation in vivo and treadmill running. We analysed muscle biopsies from human subjects to verify if our findings in murine muscle also translate to exercise in humans. RESULTS We identified a new phosphorylation site on Myocardin-Related Transcription Factor B (MRTF-B), a co-activator of serum response factor (SRF). Phosphorylation of MRTF-B is required for its nuclear translocation after exercise and is accompanied by the transcription of the SRF target gene Fos. In addition, high-intensity exercise also remodels chromatin at specific SRF target gene loci through the phosphorylation of histone 3 on serine 10 in myonuclei of both mice and humans. Ablation of the MAP kinase member MSK1/2 is sufficient to prevent this histone phosphorylation, reduce induction of SRF-target genes, and prevent increases in protein synthesis after exercise. CONCLUSION Our results identify a new exercise signalling fingerprint in vivo, instrumental for exercise-induced protein synthesis and potentially muscle growth.
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Affiliation(s)
| | - Leonardo Nogara
- Venetian Institute of Molecular Medicine (VIMM) Padova Italy
- Department of Biomedical Sciences University of Padova Padova Italy
| | - Kenneth A. Dyar
- Molecular Endocrinology, Institute for Diabetes and Cancer (IDC) Helmholz Zentrum MunichHelmholtz Diabetes Center (HMGU) Munich Germany
| | - Franziska Greulich
- Molecular Endocrinology, Institute for Diabetes and Cancer (IDC) Helmholz Zentrum MunichHelmholtz Diabetes Center (HMGU) Munich Germany
| | - Ashfaq A. Mir
- Molecular Endocrinology, Institute for Diabetes and Cancer (IDC) Helmholz Zentrum MunichHelmholtz Diabetes Center (HMGU) Munich Germany
| | - Clara Türk
- Research laboratory for Biochemical Pathology Department of Clinical Medicine & Department of Biomedicine Aarhus University Aarhus Denmark
| | - Theresa Bock
- Research laboratory for Biochemical Pathology Department of Clinical Medicine & Department of Biomedicine Aarhus University Aarhus Denmark
| | - Alessia Geremia
- Venetian Institute of Molecular Medicine (VIMM) Padova Italy
- Department of Biomedical Sciences University of Padova Padova Italy
| | - Martina Baraldo
- Venetian Institute of Molecular Medicine (VIMM) Padova Italy
- Department of Biomedical Sciences University of Padova Padova Italy
| | - Roberta Sartori
- Venetian Institute of Molecular Medicine (VIMM) Padova Italy
- Department of Biomedical Sciences University of Padova Padova Italy
| | - Jean Farup
- Research laboratory for Biochemical Pathology Department of Clinical Medicine & Department of Biomedicine Aarhus University Aarhus Denmark
| | - Henriette Uhlenhaut
- Molecular Endocrinology, Institute for Diabetes and Cancer (IDC) Helmholz Zentrum MunichHelmholtz Diabetes Center (HMGU) Munich Germany
- Chair for Metabolic Programming TUM School of Life SciencesZIEL‐Institute for Food & Health Freising Germany
| | - Kristian Vissing
- Department of Public Health, Section for Sport Science Aarhus University Aarhus Denmark
| | - Marcus Krüger
- Institute for Genetics Cologne Excellence Cluster on Cellular Stress Responses in Aging‐Associated Diseases (CECAD)University of Cologne Cologne Germany
| | - Bert Blaauw
- Venetian Institute of Molecular Medicine (VIMM) Padova Italy
- Department of Biomedical Sciences University of Padova Padova Italy
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26
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Akotsen-Mensah C, Blaauw B, Short B, Leskey TC, Bergh JC, Polk D, Nielsen AL. Using IPM-CPR as a Management Program for Apple Orchards. J Econ Entomol 2020; 113:1894-1902. [PMID: 32447399 DOI: 10.1093/jee/toaa087] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/08/2019] [Indexed: 06/11/2023]
Abstract
We have demonstrated how management of key orchard pests including the insect invasive species Halyomorpha halys (Stål) (Hemiptera: Pentatomidae) can be accomplished using a systems-level approach termed IPM-CPR (Integrated Pest Management-Crop Perimeter Restructuring) in apple. We conducted on-farm comparisons of IPM-CPR to standard management program for managing H. halys, Cydia pomonella (L.) (Lepidoptera: Tortricidae), Grapholita molesta (Busck) (Lepidoptera: Tortricidae), and Lygus lineolaris Palisot de Beauvois (Hemiptera: Miridae) in commercial apple orchards in 2014, 2016, and 2017 in New Jersey, Maryland, and Virginia. The presence and abundance of key pests and fruit injury at harvest were used as a measure of success of the program. We compared the amount of insecticide applied for each management program. In majority of instances, there were no differences in the IPM-CPR and the standard management program in terms of H. halys numbers in baited pyramid traps and stink bug injury at harvest. Damage from C. pomonella and G. molesta in the IPM-CPR treatment was significantly lower than the standard management program in 2014 and 2017. Amount of active ingredient used was on average 62.1% lower in the IPM-CPR treatment compared with standard management program. Despite a reduction in insecticide use, there were minimal impacts on beneficial insects. Overall, IPM-CPR in apples successfully managed key orchard pests, including H. halys, and used significantly less insecticide than a standard insecticide-based management program and could be adopted as a systems-level approach for pest population reduction.
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Affiliation(s)
- C Akotsen-Mensah
- Department of Entomology, Rutgers University, Bridgeton, NJ
- Cooperative Extension and Research, Lincoln University, Jefferson City, MO
| | - B Blaauw
- Department of Entomology, University of Georgia, Athens, GA
| | - B Short
- AFRS, USDA-ARS, Kearneysville, WV
| | | | - J C Bergh
- Virginia Tech, AHS AREC, Winchester, VA
| | - D Polk
- Department of Agriculture and Natural Resources, Rutgers University, Bridgeton, NJ
| | - A L Nielsen
- Department of Entomology, Rutgers University, Bridgeton, NJ
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27
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Blaauw B. Activity-dependent increases of protein synthesis in skeletal muscle: Sensing the energy levels? J Physiol 2020; 598:2537-2538. [PMID: 32415782 DOI: 10.1113/jp280081] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2020] [Accepted: 05/13/2020] [Indexed: 11/08/2022] Open
Affiliation(s)
- Bert Blaauw
- Venetian Institute of Molecular Medicine (VIMM), Via Orus 2, Padova & Department of Biomedical Sciences, University of Padova, Padova, Italy
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28
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Kallabis S, Abraham L, Müller S, Dzialas V, Türk C, Wiederstein JL, Bock T, Nolte H, Nogara L, Blaauw B, Braun T, Krüger M. High-throughput proteomics fiber typing (ProFiT) for comprehensive characterization of single skeletal muscle fibers. Skelet Muscle 2020; 10:7. [PMID: 32293536 PMCID: PMC7087369 DOI: 10.1186/s13395-020-00226-5] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [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: 12/02/2019] [Accepted: 03/04/2020] [Indexed: 12/20/2022] Open
Abstract
BACKGROUND Skeletal muscles are composed of a heterogeneous collection of fiber types with different physiological adaption in response to a stimulus and disease-related conditions. Each fiber has a specific molecular expression of myosin heavy chain molecules (MyHC). So far, MyHCs are currently the best marker proteins for characterization of individual fiber types, and several proteome profiling studies have helped to dissect the molecular signature of whole muscles and individual fibers. METHODS Herein, we describe a mass spectrometric workflow to measure skeletal muscle fiber type-specific proteomes. To bypass the limited quantities of protein in single fibers, we developed a Proteomics high-throughput fiber typing (ProFiT) approach enabling profiling of MyHC in single fibers. Aliquots of protein extracts from separated muscle fibers were subjected to capillary LC-MS gradients to profile MyHC isoforms in a 96-well format. Muscle fibers with the same MyHC protein expression were pooled and subjected to proteomic, pulsed-SILAC, and phosphoproteomic analysis. RESULTS Our fiber type-specific quantitative proteome analysis confirmed the distribution of fiber types in the soleus muscle, substantiates metabolic adaptions in oxidative and glycolytic fibers, and highlighted significant differences between the proteomes of type IIb fibers from different muscle groups, including a differential expression of desmin and actinin-3. A detailed map of the Lys-6 incorporation rates in muscle fibers showed an increased turnover of slow fibers compared to fast fibers. In addition, labeling of mitochondrial respiratory chain complexes revealed a broad range of Lys-6 incorporation rates, depending on the localization of the subunits within distinct complexes. CONCLUSION Overall, the ProFiT approach provides a versatile tool to rapidly characterize muscle fibers and obtain fiber-specific proteomes for different muscle groups.
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Affiliation(s)
- Sebastian Kallabis
- CECAD Research Center, Institute for Genetics, University of Cologne, 50931, Cologne, Germany
| | - Lena Abraham
- CECAD Research Center, Institute for Genetics, University of Cologne, 50931, Cologne, Germany
| | - Stefan Müller
- CECAD Research Center, Institute for Genetics, University of Cologne, 50931, Cologne, Germany
| | - Verena Dzialas
- CECAD Research Center, Institute for Genetics, University of Cologne, 50931, Cologne, Germany
| | - Clara Türk
- CECAD Research Center, Institute for Genetics, University of Cologne, 50931, Cologne, Germany
| | - Janica Lea Wiederstein
- CECAD Research Center, Institute for Genetics, University of Cologne, 50931, Cologne, Germany
| | - Theresa Bock
- CECAD Research Center, Institute for Genetics, University of Cologne, 50931, Cologne, Germany
| | - Hendrik Nolte
- Max Planck Institute for the Biology of Aging, 50931, Cologne, Germany
| | - Leonardo Nogara
- Venetian Institute of Molecular Medicine (VIMM), Via Orus 2, 35129, Padova, Italy
| | - Bert Blaauw
- Venetian Institute of Molecular Medicine (VIMM), Via Orus 2, 35129, Padova, Italy
| | - Thomas Braun
- Max Planck Institute for Heart and Lung Research, 61231, Bad Nauheim, Germany
| | - Marcus Krüger
- CECAD Research Center, Institute for Genetics, University of Cologne, 50931, Cologne, Germany. .,Center for Molecular Medicine (CMMC), University of Cologne, 50931, Cologne, Germany.
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29
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de Winter JM, Molenaar JP, Yuen M, van der Pijl R, Shen S, Conijn S, van de Locht M, Willigenburg M, Bogaards SJ, van Kleef ES, Lassche S, Persson M, Rassier DE, Sztal TE, Ruparelia AA, Oorschot V, Ramm G, Hall TE, Xiong Z, Johnson CN, Li F, Kiss B, Lozano-Vidal N, Boon RA, Marabita M, Nogara L, Blaauw B, Rodenburg RJ, Küsters B, Doorduin J, Beggs AH, Granzier H, Campbell K, Ma W, Irving T, Malfatti E, Romero NB, Bryson-Richardson RJ, van Engelen BG, Voermans NC, Ottenheijm CA. KBTBD13 is an actin-binding protein that modulates muscle kinetics. J Clin Invest 2020; 130:754-767. [PMID: 31671076 PMCID: PMC6994151 DOI: 10.1172/jci124000] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [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: 08/16/2018] [Accepted: 10/24/2019] [Indexed: 11/17/2022] Open
Abstract
The mechanisms that modulate the kinetics of muscle relaxation are critically important for muscle function. A prime example of the impact of impaired relaxation kinetics is nemaline myopathy caused by mutations in KBTBD13 (NEM6). In addition to weakness, NEM6 patients have slow muscle relaxation, compromising contractility and daily life activities. The role of KBTBD13 in muscle is unknown, and the pathomechanism underlying NEM6 is undetermined. A combination of transcranial magnetic stimulation-induced muscle relaxation, muscle fiber- and sarcomere-contractility assays, low-angle x-ray diffraction, and superresolution microscopy revealed that the impaired muscle-relaxation kinetics in NEM6 patients are caused by structural changes in the thin filament, a sarcomeric microstructure. Using homology modeling and binding and contractility assays with recombinant KBTBD13, Kbtbd13-knockout and Kbtbd13R408C-knockin mouse models, and a GFP-labeled Kbtbd13-transgenic zebrafish model, we discovered that KBTBD13 binds to actin - a major constituent of the thin filament - and that mutations in KBTBD13 cause structural changes impairing muscle-relaxation kinetics. We propose that this actin-based impaired relaxation is central to NEM6 pathology.
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Affiliation(s)
| | - Joery P. Molenaar
- Department of Neurology, Donders Institute for Brain, Cognition and Behaviour, Radboud University Medical Center, Nijmegen, Netherlands
- Department of Neurology, Rijnstate Hospital, Arnhem, Netherlands
| | - Michaela Yuen
- Department of Physiology, Amsterdam University Medical Center, Netherlands
- Discipline of Paediatrics and Child Health, Faculty of Medicine, University of Sydney, Australia
| | - Robbert van der Pijl
- Department of Physiology, Amsterdam University Medical Center, Netherlands
- Department of Cellular and Molecular Medicine, University of Arizona, Tucson, Arizona, USA
| | - Shengyi Shen
- Department of Cellular and Molecular Medicine, University of Arizona, Tucson, Arizona, USA
| | - Stefan Conijn
- Department of Physiology, Amsterdam University Medical Center, Netherlands
| | | | - Menne Willigenburg
- Department of Physiology, Amsterdam University Medical Center, Netherlands
| | | | - Esmee S.B. van Kleef
- Department of Neurology, Donders Institute for Brain, Cognition and Behaviour, Radboud University Medical Center, Nijmegen, Netherlands
| | - Saskia Lassche
- Department of Neurology, Donders Institute for Brain, Cognition and Behaviour, Radboud University Medical Center, Nijmegen, Netherlands
| | - Malin Persson
- Department of Kinesiology and Physical Education, McGill University, Montreal, Canada
- Department of Physiology and Pharmacology, Karolinska Institutet, Stockholm, Sweden
| | - Dilson E. Rassier
- Department of Kinesiology and Physical Education, McGill University, Montreal, Canada
| | - Tamar E. Sztal
- School of Biological Sciences, Monash University, Melbourne, Australia
| | | | - Viola Oorschot
- Monash Ramaciotti Centre for Structural Cryo-Electron Microscopy, Monash University, Melbourne, Australia
| | - Georg Ramm
- Monash Ramaciotti Centre for Structural Cryo-Electron Microscopy, Monash University, Melbourne, Australia
- Biochemistry and Molecular Biology, Monash Biomedicine Discovery Institute, Monash University, Melbourne, Victoria, Australia
| | - Thomas E. Hall
- Institute for Molecular Bioscience, University of Queensland, Queensland, Australia
| | - Zherui Xiong
- Institute for Molecular Bioscience, University of Queensland, Queensland, Australia
| | - Christopher N. Johnson
- Division of Clinical Pharmacology, Center for Arrhythmia Research and Therapeutics and Center for Structural Biology, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - Frank Li
- Department of Cellular and Molecular Medicine, University of Arizona, Tucson, Arizona, USA
| | - Balazs Kiss
- Department of Cellular and Molecular Medicine, University of Arizona, Tucson, Arizona, USA
| | | | - Reinier A. Boon
- Department of Physiology, Amsterdam University Medical Center, Netherlands
| | - Manuela Marabita
- Venetian Institute of Molecular Medicine, Department of Biomedical Sciences, University of Padova, Italy
| | - Leonardo Nogara
- Venetian Institute of Molecular Medicine, Department of Biomedical Sciences, University of Padova, Italy
| | - Bert Blaauw
- Venetian Institute of Molecular Medicine, Department of Biomedical Sciences, University of Padova, Italy
| | - Richard J. Rodenburg
- Department of Pediatrics, Radboud University Medical Centre, Translational Metabolic Laboratory, Nijmegen, Netherlands
| | - Benno Küsters
- Department of Pathology, Radboud University Medical Centre, Nijmegen, Netherlands
| | - Jonne Doorduin
- Department of Neurology, Donders Institute for Brain, Cognition and Behaviour, Radboud University Medical Center, Nijmegen, Netherlands
| | - Alan H. Beggs
- Division of Genetics and Genomics, The Manton Center for Orphan Disease Research, Boston Children’s Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Henk Granzier
- Department of Cellular and Molecular Medicine, University of Arizona, Tucson, Arizona, USA
| | - Ken Campbell
- Department of Physiology and Division of Cardiovascular Medicine, University of Kentucky, Lexington, Kentucky, USA
| | - Weikang Ma
- BioCAT, Illinois Institute of Technology, Chicago, Illinois, USA
| | - Thomas Irving
- BioCAT, Illinois Institute of Technology, Chicago, Illinois, USA
| | - Edoardo Malfatti
- Service Neurologie Médicale, Centre de Référence Maladies Neuromusculaire Paris-Nord CHU Raymond-Poincaré, U1179 UVSQ-INSERM Handicap Neuromusculaire: Physiologie, Biothérapie et Pharmacologie Appliquées, UFR des Sciences de la Santé Simone Veil, Université Versailles-Saint-Quentin-en-Yvelines, Garches, France
| | - Norma B. Romero
- Sorbonne Université, Myology Institute, Neuromuscular Morphology Unit, Center for Research in Myology, GH Pitié-Salpêtrière Paris, France
- Centre de Référence de Pathologie Neuromusculaire Paris-Est, GHU Pitié-Salpêtrière, Assistance Publique-Hôpitaux de Paris, Paris, France
| | | | - Baziel G.M. van Engelen
- Department of Neurology, Donders Institute for Brain, Cognition and Behaviour, Radboud University Medical Center, Nijmegen, Netherlands
| | - Nicol C. Voermans
- Department of Neurology, Donders Institute for Brain, Cognition and Behaviour, Radboud University Medical Center, Nijmegen, Netherlands
| | - Coen A.C. Ottenheijm
- Department of Physiology, Amsterdam University Medical Center, Netherlands
- Department of Cellular and Molecular Medicine, University of Arizona, Tucson, Arizona, USA
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30
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Baraldo M, Geremia A, Pirazzini M, Nogara L, Solagna F, Türk C, Nolte H, Romanello V, Megighian A, Boncompagni S, Kruger M, Sandri M, Blaauw B. Skeletal muscle mTORC1 regulates neuromuscular junction stability. J Cachexia Sarcopenia Muscle 2020; 11:208-225. [PMID: 31651100 PMCID: PMC7015238 DOI: 10.1002/jcsm.12496] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [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: 05/02/2019] [Revised: 08/12/2019] [Accepted: 08/25/2019] [Indexed: 12/24/2022] Open
Abstract
BACKGROUND Skeletal muscle is a plastic tissue that can adapt to different stimuli. It is well established that Mammalian Target of Rapamycin Complex 1 (mTORC1) signalling is a key modulator in mediating increases in skeletal muscle mass and function. However, the role of mTORC1 signalling in adult skeletal muscle homeostasis is still not well defined. METHODS Inducible, muscle-specific Raptor and mTOR k.o. mice were generated. Muscles at 1 and 7 months after deletion were analysed to assess muscle histology and muscle force. RESULTS We found no change in muscle size or contractile properties 1 month after deletion. Prolonging deletion of Raptor to 7 months, however, leads to a very marked phenotype characterized by weakness, muscle regeneration, mitochondrial dysfunction, and autophagy impairment. Unexpectedly, reduced mTOR signalling in muscle fibres is accompanied by the appearance of markers of fibre denervation, like the increased expression of the neural cell adhesion molecule (NCAM). Both muscle-specific deletion of mTOR or Raptor, or the use of rapamycin, was sufficient to induce 3-8% of NCAM-positive fibres (P < 0.01), muscle fibrillation, and neuromuscular junction (NMJ) fragmentation in 24% of examined fibres (P < 0.001). Mechanistically, reactivation of autophagy with the small peptide Tat-beclin1 is sufficient to prevent mitochondrial dysfunction and the appearance of NCAM-positive fibres in Raptor k.o. muscles. CONCLUSIONS Our study shows that mTOR signalling in skeletal muscle fibres is critical for maintaining proper fibre innervation, preserving the NMJ structure in both the muscle fibre and the motor neuron. In addition, considering the beneficial effects of exercise in most pathologies affecting the NMJ, our findings suggest that part of these beneficial effects of exercise are through the well-established activation of mTORC1 in skeletal muscle during and after exercise.
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Affiliation(s)
- Martina Baraldo
- Venetian Institute of Molecular Medicine (VIMM), Padova, Italy.,Department of Biomedical Sciences, University of Padova, Padova, Italy
| | - Alessia Geremia
- Venetian Institute of Molecular Medicine (VIMM), Padova, Italy.,Department of Biomedical Sciences, University of Padova, Padova, Italy
| | - Marco Pirazzini
- Department of Biomedical Sciences, University of Padova, Padova, Italy
| | - Leonardo Nogara
- Venetian Institute of Molecular Medicine (VIMM), Padova, Italy.,Department of Biomedical Sciences, University of Padova, Padova, Italy
| | - Francesca Solagna
- Venetian Institute of Molecular Medicine (VIMM), Padova, Italy.,Department of Biomedical Sciences, University of Padova, Padova, Italy
| | - Clara Türk
- Institute for Genetics, Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), Cologne, Germany
| | - Hendrik Nolte
- Institute for Genetics, Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), Cologne, Germany
| | - Vanina Romanello
- Venetian Institute of Molecular Medicine (VIMM), Padova, Italy.,Department of Biomedical Sciences, University of Padova, Padova, Italy
| | - Aram Megighian
- Department of Biomedical Sciences, University of Padova, Padova, Italy
| | - Simona Boncompagni
- CeSI-Met-Center for Research on Ageing and Translational Medicine and DNICS, Department of Neuroscience, Imaging and Clinical Sciences, University G. d' Annunzio, Chieti, Italy
| | - Marcus Kruger
- Institute for Genetics, Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), Cologne, Germany.,Center for Molecular Medicine (CMMC), University of Cologne, Cologne, Germany
| | - Marco Sandri
- Venetian Institute of Molecular Medicine (VIMM), Padova, Italy.,Department of Biomedical Sciences, University of Padova, Padova, Italy
| | - Bert Blaauw
- Venetian Institute of Molecular Medicine (VIMM), Padova, Italy.,Department of Biomedical Sciences, University of Padova, Padova, Italy
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31
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D'Hulst G, Soro-Arnaiz I, Masschelein E, Veys K, Fitzgerald G, Smeuninx B, Kim S, Deldicque L, Blaauw B, Carmeliet P, Breen L, Koivunen P, Zhao SM, De Bock K. PHD1 controls muscle mTORC1 in a hydroxylation-independent manner by stabilizing leucyl tRNA synthetase. Nat Commun 2020; 11:174. [PMID: 31924757 PMCID: PMC6954236 DOI: 10.1038/s41467-019-13889-6] [Citation(s) in RCA: 237] [Impact Index Per Article: 59.3] [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: 05/20/2019] [Accepted: 12/06/2019] [Indexed: 02/08/2023] Open
Abstract
mTORC1 is an important regulator of muscle mass but how it is modulated by oxygen and nutrients is not completely understood. We show that loss of the prolyl hydroxylase domain isoform 1 oxygen sensor in mice (PHD1KO) reduces muscle mass. PHD1KO muscles show impaired mTORC1 activation in response to leucine whereas mTORC1 activation by growth factors or eccentric contractions was preserved. The ability of PHD1 to promote mTORC1 activity is independent of its hydroxylation activity but is caused by decreased protein content of the leucyl tRNA synthetase (LRS) leucine sensor. Mechanistically, PHD1 interacts with and stabilizes LRS. This interaction is promoted during oxygen and amino acid depletion and protects LRS from degradation. Finally, elderly subjects have lower PHD1 levels and LRS activity in muscle from aged versus young human subjects. In conclusion, PHD1 ensures an optimal mTORC1 response to leucine after episodes of metabolic scarcity. mTORC1 is an important regulator of muscle mass. Here, the authors show that the PHD1 controls muscle mass in a hydroxylation-independent manner. PHD1 prevents the degradation of leucine sensor LRS during oxygen and amino acid depletion to ensure effective mTORC1 activation in response to leucine.
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Affiliation(s)
- Gommaar D'Hulst
- Department Health Sciences and Technology, Laboratory of Exercise and Health, Swiss Federal Institute of Technology (ETH) Zurich, Zurich, Switzerland
| | - Inés Soro-Arnaiz
- Department Health Sciences and Technology, Laboratory of Exercise and Health, Swiss Federal Institute of Technology (ETH) Zurich, Zurich, Switzerland
| | - Evi Masschelein
- Department Health Sciences and Technology, Laboratory of Exercise and Health, Swiss Federal Institute of Technology (ETH) Zurich, Zurich, Switzerland
| | - Koen Veys
- Laboratory of Angiogenesis and Vascular Metabolism, VIB Center for Cancer Biology (CCB), VIB, Leuven, Belgium.,Laboratory of Angiogenesis and Vascular Metabolism, Department of Oncology, KU Leuven, Leuven, Belgium
| | - Gillian Fitzgerald
- Department Health Sciences and Technology, Laboratory of Exercise and Health, Swiss Federal Institute of Technology (ETH) Zurich, Zurich, Switzerland
| | - Benoit Smeuninx
- School of Sport, Exercise and Rehabilitation Sciences, University of Birmingham, Edgbaston, Birmingham, B15 2TT, UK.,MRC Arthritis Research UK Centre for Musculoskeletal Ageing Research, University of Birmingham, Edgbaston, Birmingham, B15 2TT, UK
| | - Sunghoon Kim
- Medicinal Bioconvergence Research Center, College of Pharmacy, Seoul National University, Gwanak-gu, Seoul, South Korea
| | - Louise Deldicque
- Institute of Neuroscience, Université catholique de Louvain, Louvain-La-Neuve, Belgium
| | - Bert Blaauw
- Department of Biomedical Sciences, Venetian Institute of Molecular Medicine, University of Padova, Padova, Italy
| | - Peter Carmeliet
- Laboratory of Angiogenesis and Vascular Metabolism, VIB Center for Cancer Biology (CCB), VIB, Leuven, Belgium.,Laboratory of Angiogenesis and Vascular Metabolism, Department of Oncology, KU Leuven, Leuven, Belgium
| | - Leigh Breen
- School of Sport, Exercise and Rehabilitation Sciences, University of Birmingham, Edgbaston, Birmingham, B15 2TT, UK.,MRC Arthritis Research UK Centre for Musculoskeletal Ageing Research, University of Birmingham, Edgbaston, Birmingham, B15 2TT, UK
| | - Peppi Koivunen
- Biocenter Oulu, Faculty of Biochemistry and Molecular Medicine, Oulu Center for Cell-Matrix Research, University of Oulu, Oulu, Finland
| | - Shi-Min Zhao
- Obstetrics and Gynaecology Hospital of Fudan University, State Key Lab of Genetic Engineering, School of Life Sciences and Institutes of Biomedical Sciences, Shanghai, P. R. China.,Institute of Biomedical Science, Fudan University, Shanghai, P. R. China.,Collaborative Innovation Center for Biotherapy, West China Hospital, Sichuan University, Chengdu, P. R. China
| | - Katrien De Bock
- Department Health Sciences and Technology, Laboratory of Exercise and Health, Swiss Federal Institute of Technology (ETH) Zurich, Zurich, Switzerland.
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32
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Affiliation(s)
- Bert Blaauw
- Department of Biomedical Sciences, University of Padova, Italy.,Venetian Institute of Molecular Medicine, Padova, Italy
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33
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Oost LJ, Kustermann M, Armani A, Blaauw B, Romanello V. Fibroblast growth factor 21 controls mitophagy and muscle mass. J Cachexia Sarcopenia Muscle 2019; 10:630-642. [PMID: 30895728 PMCID: PMC6596457 DOI: 10.1002/jcsm.12409] [Citation(s) in RCA: 122] [Impact Index Per Article: 24.4] [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: 08/28/2018] [Revised: 12/12/2018] [Accepted: 01/17/2019] [Indexed: 01/01/2023] Open
Abstract
BACKGROUND Skeletal muscle is a plastic tissue that adapts to changes in exercise, nutrition, and stress by secreting myokines and myometabolites. These muscle-secreted factors have autocrine, paracrine, and endocrine effects, contributing to whole body homeostasis. Muscle dysfunction in aging sarcopenia, cancer cachexia, and diabetes is tightly correlated with the disruption of the physiological homeostasis at the whole body level. The expression levels of the myokine fibroblast growth factor 21 (FGF21) are very low in normal healthy muscles. However, fasting, ER stress, mitochondrial myopathies, and metabolic disorders induce its release from muscles. Although our understanding of the systemic effects of muscle-derived FGF21 is exponentially increasing, the direct contribution of FGF21 to muscle function has not been investigated yet. METHODS Muscle-specific FGF21 knockout mice were generated to investigate the consequences of FGF21 deletion concerning skeletal muscle mass and force. To identify the mechanisms underlying FGF21-dependent adaptations in skeletal muscle during starvation, the study was performed on muscles collected from both fed and fasted adult mice. In vivo overexpression of FGF21 was performed in skeletal muscle to assess whether FGF21 is sufficient per se to induce muscle atrophy. RESULTS We show that FGF21 does not contribute to muscle homeostasis in basal conditions in terms of fibre type distribution, fibre size, and muscle force. In contrast, FGF21 is required for fasting-induced muscle atrophy and weakness. The mass of isolated muscles from control-fasted mice was reduced by 15-25% (P < 0.05) compared with fed control mice. FGF21-null muscles, however, were significantly protected from muscle loss and weakness during fasting. Such important protection is due to the maintenance of protein synthesis rate in knockout muscles during fasting compared with a 70% reduction in control-fasted muscles (P < 0.01), together with a significant reduction of the mitophagy flux via the regulation of the mitochondrial protein Bnip3. The contribution of FGF21 to the atrophy programme was supported by in vivo FGF21 overexpression in muscles, which was sufficient to induce autophagy and muscle loss by 15% (P < 0.05). Bnip3 inhibition protected against FGF21-dependent muscle wasting in adult animals (P < 0.05). CONCLUSIONS FGF21 is a novel player in the regulation of muscle mass that requires the mitophagy protein Bnip3.
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Affiliation(s)
- Lynette J Oost
- Venetian Institute of Molecular Medicine, Padova, Italy.,Minderbroedersberg, Maastricht, LK, The Netherlands
| | - Monika Kustermann
- Venetian Institute of Molecular Medicine, Padova, Italy.,Molecular Cardiology, Department of Internal Medicine II, University of Ulm, Ulm, Germany
| | - Andrea Armani
- Venetian Institute of Molecular Medicine, Padova, Italy.,Department of Biomedical Sciences, University of Padova, Padova, Italy
| | - Bert Blaauw
- Venetian Institute of Molecular Medicine, Padova, Italy.,Department of Biomedical Sciences, University of Padova, Padova, Italy.,Myology Center, Department of Biomedical Science, University of Padova, Padova, Italy
| | - Vanina Romanello
- Venetian Institute of Molecular Medicine, Padova, Italy.,Department of Biomedical Sciences, University of Padova, Padova, Italy.,Myology Center, Department of Biomedical Science, University of Padova, Padova, Italy
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34
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Galazzo L, Nogara L, LoVerso F, Polimeno A, Blaauw B, Sandri M, Reggiani C, Carbonera D. Changes in the fraction of strongly attached cross bridges in mouse atrophic and hypertrophic muscles as revealed by continuous wave electron paramagnetic resonance. Am J Physiol Cell Physiol 2019; 316:C722-C730. [PMID: 30865515 DOI: 10.1152/ajpcell.00438.2018] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [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: 11/22/2022]
Abstract
Electron paramagnetic resonance (EPR), coupled with site-directed spin labeling, has been proven to be a particularly suitable technique to extract information on the fraction of myosin heads strongly bound to actin upon muscle contraction. The approach can be used to investigate possible structural changes occurring in myosin of fiber s altered by diseases and aging. In this work, we labeled myosin at position Cys707, located in the SH1-SH2 helix in the myosin head cleft, with iodoacetamide spin label, a spin label that is sensitive to the reorientational motion of this protein during the ATPase cycle and characterized the biochemical states of the labeled myosin head by means of continuous wave EPR. After checking the sensitivity and the power of the technique on different muscles and species, we investigated whether changes in the fraction of strongly bound myosin heads might explain the contractile alterations observed in atrophic and hypertrophic murine muscles. In both conditions, the difference in contractile force could not be justified simply by the difference in muscle mass. Our results showed that in atrophic muscles the decrease in force generation was attributable to a lower fraction of strongly bound cross bridges during maximal activation. In contrast in hypertrophic muscles, the increase in force generation was likely due to several factors, as pointed out by the comparison of the EPR experiments with the tension measurements on single skinned fibers.
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Affiliation(s)
- Laura Galazzo
- Department of Chemical Sciences, University of Padova , Padua , Italy
| | | | | | - Antonino Polimeno
- Department of Chemical Sciences, University of Padova , Padua , Italy
| | - Bert Blaauw
- Venetian Institute of Molecular Medicine , Padua , Italy
| | - Marco Sandri
- Venetian Institute of Molecular Medicine , Padua , Italy.,Department of Biomedical Sciences, University of Padova , Padua , Italy
| | - Carlo Reggiani
- Department of Biomedical Sciences, University of Padova , Padua , Italy
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35
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Rashid T, Nemazanyy I, Paolini C, Tatsuta T, Crespin P, de Villeneuve D, Brodesser S, Benit P, Rustin P, Baraibar MA, Agbulut O, Olivier A, Protasi F, Langer T, Chrast R, de Lonlay P, de Foucauld H, Blaauw B, Pende M. Lipin1 deficiency causes sarcoplasmic reticulum stress and chaperone-responsive myopathy. EMBO J 2019; 38:e99576. [PMID: 30420558 PMCID: PMC6315296 DOI: 10.15252/embj.201899576] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [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: 04/06/2018] [Revised: 09/21/2018] [Accepted: 10/02/2018] [Indexed: 12/20/2022] Open
Abstract
As a consequence of impaired glucose or fatty acid metabolism, bioenergetic stress in skeletal muscles may trigger myopathy and rhabdomyolysis. Genetic mutations causing loss of function of the LPIN1 gene frequently lead to severe rhabdomyolysis bouts in children, though the metabolic alterations and possible therapeutic interventions remain elusive. Here, we show that lipin1 deficiency in mouse skeletal muscles is sufficient to trigger myopathy. Strikingly, muscle fibers display strong accumulation of both neutral and phospholipids. The metabolic lipid imbalance can be traced to an altered fatty acid synthesis and fatty acid oxidation, accompanied by a defect in acyl chain elongation and desaturation. As an underlying cause, we reveal a severe sarcoplasmic reticulum (SR) stress, leading to the activation of the lipogenic SREBP1c/SREBP2 factors, the accumulation of the Fgf21 cytokine, and alterations of SR-mitochondria morphology. Importantly, pharmacological treatments with the chaperone TUDCA and the fatty acid oxidation activator bezafibrate improve muscle histology and strength of lipin1 mutants. Our data reveal that SR stress and alterations in SR-mitochondria contacts are contributing factors and potential intervention targets of the myopathy associated with lipin1 deficiency.
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Affiliation(s)
- Talha Rashid
- Institut Necker-Enfants Malades, Paris, France
- Inserm, U1151, Paris, France
- Université Paris Descartes, Sorbonne Paris Cité, Paris, France
- Sanofi R&D, Translational Sciences Unit, In Silico Biology, Chilly-Mazarin, France
| | - Ivan Nemazanyy
- Platform for Metabolic Analyses, Institut Necker-Enfants Malades, Paris, France
| | - Cecilia Paolini
- Center for Research on Ageing and Translational Medicine (CeSI-MeT), Department of Neuroscience, Imaging, and Clinical Sciences (DNICS), University G. d' Annunzio of Chieti, Chieti, Italy
| | - Takashi Tatsuta
- Max-Planck-Institute for Biology of Ageing, Cologne, Germany
| | - Paul Crespin
- Institut Necker-Enfants Malades, Paris, France
- Inserm, U1151, Paris, France
- Université Paris Descartes, Sorbonne Paris Cité, Paris, France
| | - Delphine de Villeneuve
- Institut Necker-Enfants Malades, Paris, France
- Inserm, U1151, Paris, France
- Université Paris Descartes, Sorbonne Paris Cité, Paris, France
| | - Susanne Brodesser
- Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), University of Cologne, Cologne, Germany
| | - Paule Benit
- INSERM, UMR 1141, Hôpital Robert Debré, Paris, France
| | - Pierre Rustin
- INSERM, UMR 1141, Hôpital Robert Debré, Paris, France
| | | | - Onnik Agbulut
- CNRS, Institut de Biologie Paris-Seine (IBPS), Biological Adaptation and Ageing, Sorbonne Université, Paris, France
| | - Anne Olivier
- Sanofi R&D, Translational Sciences Unit, In Silico Biology, Chilly-Mazarin, France
| | - Feliciano Protasi
- Center for Research on Ageing and Translational Medicine (CeSI-MeT), Department of Neuroscience, Imaging, and Clinical Sciences (DNICS), University G. d' Annunzio of Chieti, Chieti, Italy
| | - Thomas Langer
- Max-Planck-Institute for Biology of Ageing, Cologne, Germany
| | - Roman Chrast
- Department of Neuroscience and Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden
| | - Pascale de Lonlay
- Institut Necker-Enfants Malades, Paris, France
- Inserm, U1151, Paris, France
- Université Paris Descartes, Sorbonne Paris Cité, Paris, France
| | - Helene de Foucauld
- Sanofi R&D, Translational Sciences Unit, In Silico Biology, Chilly-Mazarin, France
| | - Bert Blaauw
- Department of Biomedical Sciences, Venetian Institute of Molecular Medicine, University of Padova, Padova, Italy
| | - Mario Pende
- Institut Necker-Enfants Malades, Paris, France
- Inserm, U1151, Paris, France
- Université Paris Descartes, Sorbonne Paris Cité, Paris, France
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36
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Pozzer D, Varone E, Chernorudskiy A, Schiarea S, Missiroli S, Giorgi C, Pinton P, Canato M, Germinario E, Nogara L, Blaauw B, Zito E. A maladaptive ER stress response triggers dysfunction in highly active muscles of mice with SELENON loss. Redox Biol 2018; 20:354-366. [PMID: 30391828 PMCID: PMC6223234 DOI: 10.1016/j.redox.2018.10.017] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [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: 09/06/2018] [Revised: 10/02/2018] [Accepted: 10/21/2018] [Indexed: 12/12/2022] Open
Abstract
Selenoprotein N (SELENON) is an endoplasmic reticulum (ER) protein whose loss of function leads to human SELENON-related myopathies. SelenoN knockout (KO) mouse limb muscles, however, are protected from the disease, and display no major alterations in muscle histology or contractile properties. Interestingly, we find that the highly active diaphragm muscle shows impaired force production, in line with the human phenotype. In addition, after repeated stimulation with a protocol which induces muscle fatigue, also hind limb muscles show altered relaxation times. Mechanistically, muscle SELENON loss alters activity-dependent calcium handling selectively impinging on the Ca2+ uptake of the sarcoplasmic reticulum and elicits an ER stress response, including the expression of the maladaptive CHOP-induced ERO1. In SELENON-devoid models, ERO1 shifts ER redox to a more oxidised poise, and further affects Ca2+ uptake. Importantly, CHOP ablation in SelenoN KO mice completely prevents diaphragm dysfunction, the prolonged limb muscle relaxation after fatigue, and restores Ca2+ uptake by attenuating the induction of ERO1. These findings suggest that SELENON is part of an ER stress-dependent antioxidant response and that the CHOP/ERO1 branch of the ER stress response is a novel pathogenic mechanism underlying SELENON-related myopathies.
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Affiliation(s)
- Diego Pozzer
- Dulbecco Telethon Institute at Istituto di Ricerche Farmacologiche Mario Negri IRCCS, Milan, Italy
| | - Ersilia Varone
- Dulbecco Telethon Institute at Istituto di Ricerche Farmacologiche Mario Negri IRCCS, Milan, Italy
| | - Alexander Chernorudskiy
- Dulbecco Telethon Institute at Istituto di Ricerche Farmacologiche Mario Negri IRCCS, Milan, Italy
| | - Silvia Schiarea
- Dulbecco Telethon Institute at Istituto di Ricerche Farmacologiche Mario Negri IRCCS, Milan, Italy
| | - Sonia Missiroli
- Section of Pathology, Oncology and Experimental Biology, Laboratory for Technologies of Advanced Therapies (LTTA), Department of Morphology, Surgery and Experimental Medicine, University of Ferrara, Ferrara, Italy
| | - Carlotta Giorgi
- Section of Pathology, Oncology and Experimental Biology, Laboratory for Technologies of Advanced Therapies (LTTA), Department of Morphology, Surgery and Experimental Medicine, University of Ferrara, Ferrara, Italy
| | - Paolo Pinton
- Section of Pathology, Oncology and Experimental Biology, Laboratory for Technologies of Advanced Therapies (LTTA), Department of Morphology, Surgery and Experimental Medicine, University of Ferrara, Ferrara, Italy; Maria Cecilia Hospital, GVM Care & Research, 48033 Cotignola, Ravenna, Italy
| | - Marta Canato
- Department of Biomedical Sciences, University of Padua, Padua, Italy
| | - Elena Germinario
- Department of Biomedical Sciences, University of Padua, Padua, Italy
| | - Leonardo Nogara
- Department of Biomedical Sciences, University of Padua, Padua, Italy; Venetian Institute of Molecular Medicine, Padua, Italy
| | - Bert Blaauw
- Department of Biomedical Sciences, University of Padua, Padua, Italy; Venetian Institute of Molecular Medicine, Padua, Italy.
| | - Ester Zito
- Dulbecco Telethon Institute at Istituto di Ricerche Farmacologiche Mario Negri IRCCS, Milan, Italy.
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37
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Gherardi G, Nogara L, Ciciliot S, Fadini GP, Blaauw B, Braghetta P, Bonaldo P, De Stefani D, Rizzuto R, Mammucari C. Loss of mitochondrial calcium uniporter rewires skeletal muscle metabolism and substrate preference. Cell Death Differ 2018; 26:362-381. [PMID: 30232375 DOI: 10.1038/s41418-018-0191-7] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2018] [Revised: 08/07/2018] [Accepted: 08/10/2018] [Indexed: 11/10/2022] Open
Abstract
Skeletal muscle mitochondria readily accumulate Ca2+ in response to SR store-releasing stimuli thanks to the activity of the mitochondrial calcium uniporter (MCU), the highly selective channel responsible for mitochondrial Ca2+ uptake. MCU positively regulates myofiber size in physiological conditions and counteracts pathological loss of muscle mass. Here we show that skeletal muscle-specific MCU deletion inhibits myofiber mitochondrial Ca2+ uptake, impairs muscle force and exercise performance, and determines a slow to fast switch in MHC expression. Mitochondrial Ca2+ uptake is required for effective glucose oxidation, as demonstrated by the fact that in muscle-specific MCU-/- myofibers oxidative metabolism is impaired and glycolysis rate is increased. Although defective, mitochondrial activity is partially sustained by increased fatty acid (FA) oxidation. In MCU-/- myofibers, PDP2 overexpression drastically reduces FA dependency, demonstrating that decreased PDH activity is the main trigger of the metabolic rewiring of MCU-/- muscles. Accordingly, PDK4 overexpression in MCUfl/fl myofibers is sufficient to increase FA-dependent respiration. Finally, as a result of the muscle-specific MCU deletion, a systemic catabolic response impinging on both liver and adipose tissue metabolism occurs.
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Affiliation(s)
- Gaia Gherardi
- Department of Biomedical Sciences, University of Padova, 35131, Padova, Italy
| | - Leonardo Nogara
- Department of Biomedical Sciences, University of Padova, 35131, Padova, Italy
| | - Stefano Ciciliot
- Department of Medicine, University of Padova, 35128, Padova, Italy.,Venetian Institute of Molecular Medicine, 35129, Padova, Italy
| | - Gian Paolo Fadini
- Department of Medicine, University of Padova, 35128, Padova, Italy.,Venetian Institute of Molecular Medicine, 35129, Padova, Italy
| | - Bert Blaauw
- Department of Biomedical Sciences, University of Padova, 35131, Padova, Italy.,Venetian Institute of Molecular Medicine, 35129, Padova, Italy
| | - Paola Braghetta
- Department of Molecular Medicine, University of Padova, 35131, Padova, Italy
| | - Paolo Bonaldo
- Department of Molecular Medicine, University of Padova, 35131, Padova, Italy
| | - Diego De Stefani
- Department of Biomedical Sciences, University of Padova, 35131, Padova, Italy
| | - Rosario Rizzuto
- Department of Biomedical Sciences, University of Padova, 35131, Padova, Italy.
| | - Cristina Mammucari
- Department of Biomedical Sciences, University of Padova, 35131, Padova, Italy.
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38
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Lang F, Khaghani S, Türk C, Wiederstein JL, Hölper S, Piller T, Nogara L, Blaauw B, Günther S, Müller S, Braun T, Krüger M. Single Muscle Fiber Proteomics Reveals Distinct Protein Changes in Slow and Fast Fibers during Muscle Atrophy. J Proteome Res 2018; 17:3333-3347. [DOI: 10.1021/acs.jproteome.8b00093] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Franziska Lang
- Institute for Genetics, Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), Joseph-Stelzmann-Strasse 26, 50931 Cologne, Germany
| | - Solmaz Khaghani
- Max Planck Institute for Heart and Lung Research, Ludwigstr. 43, 61231 Bad Nauheim, Germany
| | - Clara Türk
- Institute for Genetics, Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), Joseph-Stelzmann-Strasse 26, 50931 Cologne, Germany
| | - Janica Lea Wiederstein
- Institute for Genetics, Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), Joseph-Stelzmann-Strasse 26, 50931 Cologne, Germany
| | - Soraya Hölper
- Sanofi-Aventis Deutschland GmbH, Biologics Research, Protein Therapeutics, Industriepark Höchst, 65926 Frankfurt, Germany
| | - Tanja Piller
- Institute of Biochemistry II, Goethe University Medical School, 60590 Frankfurt, Germany
| | - Leonardo Nogara
- Venetian Institute of Molecular Medicine (VIMM), Department of Biomedical Sciences Padova, University of Padova, 2-35129 Padova, Italy
| | - Bert Blaauw
- Venetian Institute of Molecular Medicine (VIMM), Department of Biomedical Sciences Padova, University of Padova, 2-35129 Padova, Italy
| | - Stefan Günther
- Max Planck Institute for Heart and Lung Research, Ludwigstr. 43, 61231 Bad Nauheim, Germany
| | - Stefan Müller
- Center for Molecular Medicine (CMMC), University of Cologne, 50931 Cologne, Germany
| | - Thomas Braun
- Max Planck Institute for Heart and Lung Research, Ludwigstr. 43, 61231 Bad Nauheim, Germany
| | - Marcus Krüger
- Institute for Genetics, Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), Joseph-Stelzmann-Strasse 26, 50931 Cologne, Germany
- Center for Molecular Medicine (CMMC), University of Cologne, 50931 Cologne, Germany
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39
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Vitiello L, Marabita M, Sorato E, Nogara L, Forestan G, Mouly V, Salviati L, Acosta M, Blaauw B, Canton M. Drug Repurposing for Duchenne Muscular Dystrophy: The Monoamine Oxidase B Inhibitor Safinamide Ameliorates the Pathological Phenotype in mdx Mice and in Myogenic Cultures From DMD Patients. Front Physiol 2018; 9:1087. [PMID: 30154729 PMCID: PMC6102489 DOI: 10.3389/fphys.2018.01087] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [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: 04/13/2018] [Accepted: 07/23/2018] [Indexed: 12/11/2022] Open
Abstract
Oxidative stress and mitochondrial dysfunction play a crucial role in the pathophysiology of muscular dystrophies. We previously reported that the mitochondrial enzyme monoamine oxidase (MAO) is a relevant source of reactive oxygen species (ROS) not only in murine models of muscular dystrophy, in which it directly contributes to contractile impairment, but also in muscle cells from collagen VI-deficient patients. Here, we now assessed the efficacy of a novel MAO-B inhibitor, safinamide, using in vivo and in vitro models of Duchenne muscular dystrophy (DMD). Specifically, we found that administration of safinamide in 3-month-old mdx mice reduced myofiber damage and oxidative stress and improved muscle functionality. In vitro studies with myogenic cultures from mdx mice and DMD patients showed that even cultured dystrophic myoblasts were more susceptible to oxidative stress than matching cells from healthy donors. Indeed, upon exposure to the MAO substrate tyramine or to hydrogen peroxide, DMD muscle cells displayed a rise in ROS levels and a consequent mitochondrial depolarization. Remarkably, both phenotypes normalized when cultures were treated with safinamide. Given that safinamide is already in clinical use for neurological disorders, our findings could pave the way toward a promising translation into clinical trials for DMD patients as a classic case of drug repurposing.
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Affiliation(s)
- Libero Vitiello
- Department of Biology, University of Padova, Padova, Italy.,Interuniversity Institute of Myology, Padova, Italy
| | | | - Elisa Sorato
- Department of Biomedical Sciences, University of Padova, Padova, Italy
| | - Leonardo Nogara
- Venetian Institute of Molecular Medicine (VIMM), Padova, Italy
| | - Giada Forestan
- Department of Biomedical Sciences, University of Padova, Padova, Italy
| | - Vincent Mouly
- UMRS 974 UPMC-INSERM, Center for Research in Myology, Paris, France
| | - Leonardo Salviati
- Fondazione Istituto di Ricerca Pediatrica Città della Speranza - IRP, Padova, Italy
| | - Manuel Acosta
- Fondazione Istituto di Ricerca Pediatrica Città della Speranza - IRP, Padova, Italy
| | - Bert Blaauw
- Interuniversity Institute of Myology, Padova, Italy.,Venetian Institute of Molecular Medicine (VIMM), Padova, Italy.,Department of Biomedical Sciences, University of Padova, Padova, Italy
| | - Marcella Canton
- Venetian Institute of Molecular Medicine (VIMM), Padova, Italy.,Department of Biomedical Sciences, University of Padova, Padova, Italy.,Fondazione Istituto di Ricerca Pediatrica Città della Speranza - IRP, Padova, Italy
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40
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Dyar KA, Hubert MJ, Mir AA, Ciciliot S, Lutter D, Greulich F, Quagliarini F, Kleinert M, Fischer K, Eichmann TO, Wright LE, Peña Paz MI, Casarin A, Pertegato V, Romanello V, Albiero M, Mazzucco S, Rizzuto R, Salviati L, Biolo G, Blaauw B, Schiaffino S, Uhlenhaut NH. Transcriptional programming of lipid and amino acid metabolism by the skeletal muscle circadian clock. PLoS Biol 2018; 16:e2005886. [PMID: 30096135 PMCID: PMC6105032 DOI: 10.1371/journal.pbio.2005886] [Citation(s) in RCA: 85] [Impact Index Per Article: 14.2] [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: 03/05/2018] [Revised: 08/22/2018] [Accepted: 07/27/2018] [Indexed: 12/30/2022] Open
Abstract
Circadian clocks are fundamental physiological regulators of energy homeostasis, but direct transcriptional targets of the muscle clock machinery are unknown. To understand how the muscle clock directs rhythmic metabolism, we determined genome-wide binding of the master clock regulators brain and muscle ARNT-like protein 1 (BMAL1) and REV-ERBα in murine muscles. Integrating occupancy with 24-hr gene expression and metabolomics after muscle-specific loss of BMAL1 and REV-ERBα, here we unravel novel molecular mechanisms connecting muscle clock function to daily cycles of lipid and protein metabolism. Validating BMAL1 and REV-ERBα targets using luciferase assays and in vivo rescue, we demonstrate how a major role of the muscle clock is to promote diurnal cycles of neutral lipid storage while coordinately inhibiting lipid and protein catabolism prior to awakening. This occurs by BMAL1-dependent activation of Dgat2 and REV-ERBα-dependent repression of major targets involved in lipid metabolism and protein turnover (MuRF-1, Atrogin-1). Accordingly, muscle-specific loss of BMAL1 is associated with metabolic inefficiency, impaired muscle triglyceride biosynthesis, and accumulation of bioactive lipids and amino acids. Taken together, our data provide a comprehensive overview of how genomic binding of BMAL1 and REV-ERBα is related to temporal changes in gene expression and metabolite fluctuations.
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Affiliation(s)
- Kenneth Allen Dyar
- Helmholtz Diabetes Center (HMGU) and German Center for Diabetes Research (DZD), Institute for Diabetes and Obesity (IDO), Munich, Germany
- Venetian Institute of Molecular Medicine (VIMM), Padova, Italy
| | - Michaël Jean Hubert
- Helmholtz Diabetes Center (HMGU) and German Center for Diabetes Research (DZD), Institute for Diabetes and Obesity (IDO), Munich, Germany
| | - Ashfaq Ali Mir
- Helmholtz Diabetes Center (HMGU) and German Center for Diabetes Research (DZD), Institute for Diabetes and Obesity (IDO), Munich, Germany
| | | | - Dominik Lutter
- Helmholtz Diabetes Center (HMGU) and German Center for Diabetes Research (DZD), Institute for Diabetes and Obesity (IDO), Munich, Germany
| | - Franziska Greulich
- Helmholtz Diabetes Center (HMGU) and German Center for Diabetes Research (DZD), Institute for Diabetes and Obesity (IDO), Munich, Germany
| | - Fabiana Quagliarini
- Helmholtz Diabetes Center (HMGU) and German Center for Diabetes Research (DZD), Institute for Diabetes and Obesity (IDO), Munich, Germany
| | - Maximilian Kleinert
- Helmholtz Diabetes Center (HMGU) and German Center for Diabetes Research (DZD), Institute for Diabetes and Obesity (IDO), Munich, Germany
| | - Katrin Fischer
- Helmholtz Diabetes Center (HMGU) and German Center for Diabetes Research (DZD), Institute for Diabetes and Obesity (IDO), Munich, Germany
| | | | | | | | - Alberto Casarin
- Clinical Genetics Unit, Department of Woman and Child Health, University of Padova, and IRP Città della Speranza, Padova, Italy
| | - Vanessa Pertegato
- Clinical Genetics Unit, Department of Woman and Child Health, University of Padova, and IRP Città della Speranza, Padova, Italy
| | | | - Mattia Albiero
- Venetian Institute of Molecular Medicine (VIMM), Padova, Italy
| | - Sara Mazzucco
- Clinica Medica, Department of Medical Sciences, University of Trieste, Trieste, Italy
| | - Rosario Rizzuto
- Department of Biomedical Sciences, University of Padova, Padova, Italy
| | - Leonardo Salviati
- Clinical Genetics Unit, Department of Woman and Child Health, University of Padova, and IRP Città della Speranza, Padova, Italy
| | - Gianni Biolo
- Clinica Medica, Department of Medical Sciences, University of Trieste, Trieste, Italy
| | - Bert Blaauw
- Venetian Institute of Molecular Medicine (VIMM), Padova, Italy
- Department of Biomedical Sciences, University of Padova, Padova, Italy
| | | | - N. Henriette Uhlenhaut
- Helmholtz Diabetes Center (HMGU) and German Center for Diabetes Research (DZD), Institute for Diabetes and Obesity (IDO), Munich, Germany
- Gene Center, Ludwig-Maximilians-Universitaet (LMU), Munich, Germany
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41
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Ferlin A, De Toni L, Agoulnik AI, Lunardon G, Armani A, Bortolanza S, Blaauw B, Sandri M, Foresta C. Protective Role of Testicular Hormone INSL3 From Atrophy and Weakness in Skeletal Muscle. Front Endocrinol (Lausanne) 2018; 9:562. [PMID: 30323788 PMCID: PMC6172310 DOI: 10.3389/fendo.2018.00562] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/29/2018] [Accepted: 09/04/2018] [Indexed: 01/06/2023] Open
Abstract
Androgens are primarily involved in muscle growth, whilst disease-driven muscle wasting is frequently associated with hypogonadism. The Leydig cells of the testes also produce the peptide-hormone Insulin-like peptide 3 (INSL3). INSL3 displays anabolic activity on bone, a target tissue of androgens, and its plasma concentrations are diminished in male hypogonadism. Here we tested the role of INSL3 on muscle mass regulation, in physiological and pathological conditions. Studies on C2C12 cell line showed that INSL3, acting on his specific receptor RXFP2, promotes skeletal muscle protein synthesis through the Akt/mTOR/S6 pathway. Next, studies on Rxfp2 -/- mice showed that INSL3 is required to prevent excessive muscle loss after denervation. Mechanistically, denervated Rxfp2 -/- mice lacked the compensatory activation of the Akt/mTOR/S6 pathway and showed an abnormal ubiquitin-proteasome system activation. Lack of INSL3 activity resulted also in reduced contractile force. These findings underlie a role of INSL3/RXFP2 in protein turnover, contributing to muscle wasting in male hypogonadism.
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Affiliation(s)
- Alberto Ferlin
- Unit of Endocrinology, Department of Clinical and Experimental Sciences, University of Brescia, Brescia, Italy
| | - Luca De Toni
- Department of Medicine, University of Padova, Padova, Italy
| | - Alexander I. Agoulnik
- Department of Human and Molecular Genetics, Herbert Wertheim College of Medicine, Florida International University, Miami, FL, United States
| | | | - Andrea Armani
- Department of Biomedical Sciences, University of Padova, Padova, Italy
| | - Sergia Bortolanza
- Department of Biomedical Sciences, University of Padova, Padova, Italy
| | - Bert Blaauw
- Department of Biomedical Sciences, University of Padova, Padova, Italy
| | - Marco Sandri
- Department of Biomedical Sciences, University of Padova, Padova, Italy
- Venetian Institute of Molecular Medicine, Padova, Italy
- *Correspondence: Marco Sandri
| | - Carlo Foresta
- Department of Medicine, University of Padova, Padova, Italy
- Carlo Foresta
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42
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Dyar KA, Schiaffino S, Blaauw B. Inactivation of the intrinsic muscle clock does not cause sarcopenia. J Physiol 2017; 594:3161-2. [PMID: 27246551 DOI: 10.1113/jp272127] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2016] [Revised: 01/13/2016] [Indexed: 01/09/2023] Open
Affiliation(s)
- K A Dyar
- Venetian Institute of Molecular Medicine (VIMM), 35129, Padova, Italy
| | - S Schiaffino
- Venetian Institute of Molecular Medicine (VIMM), 35129, Padova, Italy
| | - B Blaauw
- Venetian Institute of Molecular Medicine (VIMM), 35129, Padova, Italy.
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43
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Pereira MG, Dyar KA, Nogara L, Solagna F, Marabita M, Baraldo M, Chemello F, Germinario E, Romanello V, Nolte H, Blaauw B. Comparative Analysis of Muscle Hypertrophy Models Reveals Divergent Gene Transcription Profiles and Points to Translational Regulation of Muscle Growth through Increased mTOR Signaling. Front Physiol 2017; 8:968. [PMID: 29255421 PMCID: PMC5723052 DOI: 10.3389/fphys.2017.00968] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [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: 09/08/2017] [Accepted: 11/14/2017] [Indexed: 01/07/2023] Open
Abstract
Skeletal muscle mass is a result of the balance between protein breakdown and protein synthesis. It has been shown that multiple conditions of muscle atrophy are characterized by the common regulation of a specific set of genes, termed atrogenes. It is not known whether various models of muscle hypertrophy are similarly regulated by a common transcriptional program. Here, we characterized gene expression changes in three different conditions of muscle growth, examining each condition during acute and chronic phases. Specifically, we compared the transcriptome of Extensor Digitorum Longus (EDL) muscles collected (1) during the rapid phase of postnatal growth at 2 and 4 weeks of age, (2) 24 h or 3 weeks after constitutive activation of AKT, and (3) 24 h or 3 weeks after overload hypertrophy caused by tenotomy of the Tibialis Anterior muscle. We observed an important overlap between significantly regulated genes when comparing each single condition at the two different timepoints. Furthermore, examining the transcriptional changes occurring 24 h after a hypertrophic stimulus, we identify an important role for genes linked to a stress response, despite the absence of muscle damage in the AKT model. However, when we compared all different growth conditions, we did not find a common transcriptional fingerprint. On the other hand, all conditions showed a marked increase in mTORC1 signaling and increased ribosome biogenesis, suggesting that muscle growth is characterized more by translational, than transcriptional regulation.
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Affiliation(s)
- Marcelo G Pereira
- Venetian Institute of Molecular Medicine, Padova, Italy.,Department of Biomedical Sciences, University of Padova, Padova, Italy
| | - Kenneth A Dyar
- Venetian Institute of Molecular Medicine, Padova, Italy.,Molecular Endocrinology, Institute for Diabetes and Obesity, Helmholtz Diabetes Center and German Center for Diabetes Research, Neuherberg, Germany
| | - Leonardo Nogara
- Venetian Institute of Molecular Medicine, Padova, Italy.,Department of Biomedical Sciences, University of Padova, Padova, Italy
| | | | | | - Martina Baraldo
- Venetian Institute of Molecular Medicine, Padova, Italy.,Department of Biomedical Sciences, University of Padova, Padova, Italy
| | | | - Elena Germinario
- Department of Biomedical Sciences, University of Padova, Padova, Italy
| | - Vanina Romanello
- Venetian Institute of Molecular Medicine, Padova, Italy.,Department of Biomedical Sciences, University of Padova, Padova, Italy
| | - Hendrik Nolte
- Institute for Genetics, Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases, University of Cologne, Cologne, Germany
| | - Bert Blaauw
- Venetian Institute of Molecular Medicine, Padova, Italy.,Department of Biomedical Sciences, University of Padova, Padova, Italy
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44
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Marabita M, Baraldo M, Solagna F, Ceelen JJM, Sartori R, Nolte H, Nemazanyy I, Pyronnet S, Kruger M, Pende M, Blaauw B. S6K1 Is Required for Increasing Skeletal Muscle Force during Hypertrophy. Cell Rep 2017; 17:501-513. [PMID: 27705797 DOI: 10.1016/j.celrep.2016.09.020] [Citation(s) in RCA: 78] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2016] [Revised: 07/19/2016] [Accepted: 09/06/2016] [Indexed: 01/06/2023] Open
Abstract
Loss of skeletal muscle mass and force aggravates age-related sarcopenia and numerous pathologies, such as cancer and diabetes. The AKT-mTORC1 pathway plays a major role in stimulating adult muscle growth; however, the functional role of its downstream mediators in vivo is unknown. Here, we show that simultaneous inhibition of mTOR signaling to both S6K1 and 4E-BP1 is sufficient to reduce AKT-induced muscle growth and render it insensitive to the mTORC1-inhibitor rapamycin. Surprisingly, lack of mTOR signaling to 4E-BP1 only, or deletion of S6K1 alone, is not sufficient to reduce muscle hypertrophy or alter its sensitivity to rapamycin. However, we report that, while not required for muscle growth, S6K1 is essential for maintaining muscle structure and force production. Hypertrophy in the absence of S6K1 is characterized by compromised ribosome biogenesis and the formation of p62-positive protein aggregates. These findings identify S6K1 as a crucial player for maintaining muscle function during hypertrophy.
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Affiliation(s)
- Manuela Marabita
- Venetian Institute of Molecular Medicine (VIMM), Via Orus 2, 35129 Padova, Italy
| | - Martina Baraldo
- Venetian Institute of Molecular Medicine (VIMM), Via Orus 2, 35129 Padova, Italy
| | - Francesca Solagna
- Venetian Institute of Molecular Medicine (VIMM), Via Orus 2, 35129 Padova, Italy
| | | | - Roberta Sartori
- Venetian Institute of Molecular Medicine (VIMM), Via Orus 2, 35129 Padova, Italy
| | - Hendrik Nolte
- Max Planck Institute for Heart and Lung Research, 61231 Bad Nauheim, Germany
| | - Ivan Nemazanyy
- Institut Necker-Enfants Malades, Inserm, Université Paris Descartes, CS 61431 Paris, France
| | - Stéphane Pyronnet
- Université de Toulouse, Institut National de la Recherche Médicale (INSERM-UMR-1037), Centre de Recherches en Cancérologie de Toulouse (CRCT), Equipe Labellisée Ligue Contre le Cancer, 31432 Toulouse, France
| | - Marcus Kruger
- Max Planck Institute for Heart and Lung Research, 61231 Bad Nauheim, Germany
| | - Mario Pende
- Institut Necker-Enfants Malades, Inserm, Université Paris Descartes, CS 61431 Paris, France
| | - Bert Blaauw
- Venetian Institute of Molecular Medicine (VIMM), Via Orus 2, 35129 Padova, Italy; Department of Biomedical Sciences, University of Padova, 35137 Padova, Italy.
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45
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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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46
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Tezze C, Romanello V, Desbats MA, Fadini GP, Albiero M, Favaro G, Ciciliot S, Soriano ME, Morbidoni V, Cerqua C, Loefler S, Kern H, Franceschi C, Salvioli S, Conte M, Blaauw B, Zampieri S, Salviati L, Scorrano L, Sandri M. Age-Associated Loss of OPA1 in Muscle Impacts Muscle Mass, Metabolic Homeostasis, Systemic Inflammation, and Epithelial Senescence. Cell Metab 2017; 25:1374-1389.e6. [PMID: 28552492 PMCID: PMC5462533 DOI: 10.1016/j.cmet.2017.04.021] [Citation(s) in RCA: 360] [Impact Index Per Article: 51.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/16/2016] [Revised: 12/22/2016] [Accepted: 04/17/2017] [Indexed: 01/07/2023]
Abstract
Mitochondrial dysfunction occurs during aging, but its impact on tissue senescence is unknown. Here, we find that sedentary but not active humans display an age-related decline in the mitochondrial protein, optic atrophy 1 (OPA1), that is associated with muscle loss. In adult mice, acute, muscle-specific deletion of Opa1 induces a precocious senescence phenotype and premature death. Conditional and inducible Opa1 deletion alters mitochondrial morphology and function but not DNA content. Mechanistically, the ablation of Opa1 leads to ER stress, which signals via the unfolded protein response (UPR) and FoxOs, inducing a catabolic program of muscle loss and systemic aging. Pharmacological inhibition of ER stress or muscle-specific deletion of FGF21 compensates for the loss of Opa1, restoring a normal metabolic state and preventing muscle atrophy and premature death. Thus, mitochondrial dysfunction in the muscle can trigger a cascade of signaling initiated at the ER that systemically affects general metabolism and aging.
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Affiliation(s)
- Caterina Tezze
- Venetian Institute of Molecular Medicine, via Orus 2, 35129 Padova, Italy; Department of Biomedical Science, University of Padova, via G. Colombo 3, 35100 Padova, Italy
| | - Vanina Romanello
- Venetian Institute of Molecular Medicine, via Orus 2, 35129 Padova, Italy; Department of Biomedical Science, University of Padova, via G. Colombo 3, 35100 Padova, Italy
| | - Maria Andrea Desbats
- Clinical Genetics Unit, Department of Woman and Child Health, University of Padova, Via Giustiniani 3, 35128 Padova, Italy
| | - Gian Paolo Fadini
- Venetian Institute of Molecular Medicine, via Orus 2, 35129 Padova, Italy
| | - Mattia Albiero
- Venetian Institute of Molecular Medicine, via Orus 2, 35129 Padova, Italy
| | - Giulia Favaro
- Venetian Institute of Molecular Medicine, via Orus 2, 35129 Padova, Italy; Department of Biomedical Science, University of Padova, via G. Colombo 3, 35100 Padova, Italy
| | - Stefano Ciciliot
- Venetian Institute of Molecular Medicine, via Orus 2, 35129 Padova, Italy
| | - Maria Eugenia Soriano
- Venetian Institute of Molecular Medicine, via Orus 2, 35129 Padova, Italy; Department of Biology, University of Padova, Via U. Bassi 58B, 35121 Padova, Italy
| | - Valeria Morbidoni
- Clinical Genetics Unit, Department of Woman and Child Health, University of Padova, Via Giustiniani 3, 35128 Padova, Italy
| | - Cristina Cerqua
- Clinical Genetics Unit, Department of Woman and Child Health, University of Padova, Via Giustiniani 3, 35128 Padova, Italy
| | - Stefan Loefler
- Ludwig Boltzmann Institute of Electrical Stimulation and Physical Rehabilitation, Wilhelminenspital, Montleartstrasse 37, A-1171 Wien, Austria
| | - Helmut Kern
- Ludwig Boltzmann Institute of Electrical Stimulation and Physical Rehabilitation, Wilhelminenspital, Montleartstrasse 37, A-1171 Wien, Austria
| | - Claudio Franceschi
- IRCCS, Institute of Neurological Sciences of Bologna, 40139 Bologna, Italy
| | - Stefano Salvioli
- Department of Experimental, Diagnostic and Specialty Medicine (DIMES), University of Bologna, 40126 Bologna, Italy
| | - Maria Conte
- Department of Experimental, Diagnostic and Specialty Medicine (DIMES), University of Bologna, 40126 Bologna, Italy
| | - Bert Blaauw
- Department of Biomedical Science, University of Padova, via G. Colombo 3, 35100 Padova, Italy
| | - Sandra Zampieri
- Department of Biomedical Science, University of Padova, via G. Colombo 3, 35100 Padova, Italy
| | - Leonardo Salviati
- Clinical Genetics Unit, Department of Woman and Child Health, University of Padova, Via Giustiniani 3, 35128 Padova, Italy; Istituto di Ricerca Pediatria, IRP, Città della Speranza, Corso Stati Uniti 4, 35129 Padova, Italy
| | - Luca Scorrano
- Venetian Institute of Molecular Medicine, via Orus 2, 35129 Padova, Italy; Department of Biology, University of Padova, Via U. Bassi 58B, 35121 Padova, Italy.
| | - Marco Sandri
- Venetian Institute of Molecular Medicine, via Orus 2, 35129 Padova, Italy; Department of Biomedical Science, University of Padova, via G. Colombo 3, 35100 Padova, Italy; Department of Medicine, McGill University, Montreal, QC H4A 3J1, Canada.
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47
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Lang F, Aravamudhan S, Nolte H, Türk C, Hölper S, Müller S, Günther S, Blaauw B, Braun T, Krüger M. Dynamic changes in the mouse skeletal muscle proteome during denervation-induced atrophy. Dis Model Mech 2017; 10:881-896. [PMID: 28546288 PMCID: PMC5536905 DOI: 10.1242/dmm.028910] [Citation(s) in RCA: 51] [Impact Index Per Article: 7.3] [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: 11/30/2016] [Accepted: 05/16/2017] [Indexed: 01/07/2023] Open
Abstract
Loss of neuronal stimulation enhances protein breakdown and reduces protein synthesis, causing rapid loss of muscle mass. To elucidate the pathophysiological adaptations that occur in atrophying muscles, we used stable isotope labelling and mass spectrometry to quantify protein expression changes accurately during denervation-induced atrophy after sciatic nerve section in the mouse gastrocnemius muscle. Additionally, mice were fed a stable isotope labelling of amino acids in cell culture (SILAC) diet containing 13C6-lysine for 4, 7 or 11 days to calculate relative levels of protein synthesis in denervated and control muscles. Ubiquitin remnant peptides (K-ε-GG) were profiled by immunoaffinity enrichment to identify potential substrates of the ubiquitin-proteasomal pathway. Of the 4279 skeletal muscle proteins quantified, 850 were differentially expressed significantly within 2 weeks after denervation compared with control muscles. Moreover, pulse labelling identified Lys6 incorporation in 4786 proteins, of which 43 had differential Lys6 incorporation between control and denervated muscle. Enrichment of diglycine remnants identified 2100 endogenous ubiquitination sites and revealed a metabolic and myofibrillar protein diglycine signature, including myosin heavy chains, myomesins and titin, during denervation. Comparative analysis of these proteomic data sets with known atrogenes using a random forest approach identified 92 proteins subject to atrogene-like regulation that have not previously been associated directly with denervation-induced atrophy. Comparison of protein synthesis and proteomic data indicated that upregulation of specific proteins in response to denervation is mainly achieved by protein stabilization. This study provides the first integrated analysis of protein expression, synthesis and ubiquitin signatures during muscular atrophy in a living animal. Summary: Comprehensive proteomic profiling of protein expression, synthesis and ubiquitination during skeletal muscle atrophy reveals that complex regulatory networks are activated during muscle wasting.
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Affiliation(s)
- Franziska Lang
- Institute for Genetics, Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), 50931 Cologne, Germany
| | - Sriram Aravamudhan
- Max Planck Institute for Heart and Lung Research, 61231 Bad Nauheim, Germany
| | - Hendrik Nolte
- Institute for Genetics, Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), 50931 Cologne, Germany
| | - Clara Türk
- Institute for Genetics, Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), 50931 Cologne, Germany
| | - Soraya Hölper
- Institute of Biochemistry II, Goethe University Medical School, 60590 Frankfurt, Germany
| | - Stefan Müller
- Center for Molecular Medicine (CMMC), University of Cologne, 50931 Cologne, Germany
| | - Stefan Günther
- Max Planck Institute for Heart and Lung Research, 61231 Bad Nauheim, Germany
| | - Bert Blaauw
- Venetian Institute of Molecular Medicine (VIMM), Department of Biomedical Sciences Padova, University of Padova, 35137 Padova, Italy
| | - Thomas Braun
- Max Planck Institute for Heart and Lung Research, 61231 Bad Nauheim, Germany
| | - Marcus Krüger
- Institute for Genetics, Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), 50931 Cologne, Germany .,Center for Molecular Medicine (CMMC), University of Cologne, 50931 Cologne, Germany
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48
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Milioto C, Malena A, Maino E, Polanco MJ, Marchioretti C, Borgia D, Pereira MG, Blaauw B, Lieberman AP, Venturini R, Plebani M, Sambataro F, Vergani L, Pegoraro E, Sorarù G, Pennuto M. Beta-agonist stimulation ameliorates the phenotype of spinal and bulbar muscular atrophy mice and patient-derived myotubes. Sci Rep 2017; 7:41046. [PMID: 28117338 PMCID: PMC5259768 DOI: 10.1038/srep41046] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [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: 06/15/2016] [Accepted: 12/15/2016] [Indexed: 02/02/2023] Open
Abstract
Spinal and bulbar muscular atrophy (SBMA) is a neuromuscular disease characterized by the loss of lower motor neurons. SBMA is caused by expansions of a polyglutamine tract in the gene coding for androgen receptor (AR). Expression of polyglutamine-expanded AR causes damage to motor neurons and skeletal muscle cells. Here we investigated the effect of β-agonist stimulation in SBMA myotube cells derived from mice and patients, and in knock-in mice. We show that treatment of myotubes expressing polyglutamine-expanded AR with the β-agonist clenbuterol increases their size. Clenbuterol activated the phosphatidylinositol-3-kinase (PI3K)/Akt/mechanistic target of rapamycin (mTOR) pathway and decreased the accumulation of polyglutamine-expanded AR. Treatment of SBMA knock-in mice with clenbuterol, which was started at disease onset, ameliorated motor function and extended survival. Clenbuterol improved muscle pathology, attenuated the glycolytic-to-oxidative metabolic alterations occurring in SBMA muscles and induced hypertrophy of both glycolytic and oxidative fibers. These results indicate that β-agonist stimulation is a novel therapeutic strategy for SBMA.
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Affiliation(s)
- Carmelo Milioto
- Dulbecco Telethon Institute, Centre for Integrative Biology, University of Trento, 38123 Trento, Italy.,Department of Neuroscience and Brain Technologies, Istituto Italiano di Tecnologia, 16163 Genova, Italy.,Dipartimento di Medicina Sperimentale, University of Genova, 16100 Genova, Italy
| | - Adriana Malena
- Department of Neurosciences, University of Padova, 35100 Padova, Italy
| | - Eleonora Maino
- Dulbecco Telethon Institute, Centre for Integrative Biology, University of Trento, 38123 Trento, Italy
| | - Maria J Polanco
- Dulbecco Telethon Institute, Centre for Integrative Biology, University of Trento, 38123 Trento, Italy
| | - Caterina Marchioretti
- Dulbecco Telethon Institute, Centre for Integrative Biology, University of Trento, 38123 Trento, Italy
| | - Doriana Borgia
- Department of Neurosciences, University of Padova, 35100 Padova, Italy
| | - Marcelo Gomes Pereira
- Venetian Institute of Molecular Medicine, Department of Biomedical Science, University of Padova, 35100 Padova, Italy
| | - Bert Blaauw
- Venetian Institute of Molecular Medicine, Department of Biomedical Science, University of Padova, 35100 Padova, Italy
| | - Andrew P Lieberman
- Department of Pathology, University of Michigan Medical School, Ann Arbor, MI 48109, USA
| | - Roberta Venturini
- Department of Laboratory Medicine, University Hospital of Padova, 35100 Padova, Italy
| | - Mario Plebani
- Department of Laboratory Medicine, University Hospital of Padova, 35100 Padova, Italy
| | - Fabio Sambataro
- Department of Experimental &Clinical Medical Sciences (DISM), University of Udine, 33100 Udine, Italy
| | - Lodovica Vergani
- Department of Neurosciences, University of Padova, 35100 Padova, Italy
| | - Elena Pegoraro
- Department of Neurosciences, University of Padova, 35100 Padova, Italy
| | - Gianni Sorarù
- Department of Neurosciences, University of Padova, 35100 Padova, Italy
| | - Maria Pennuto
- Dulbecco Telethon Institute, Centre for Integrative Biology, University of Trento, 38123 Trento, Italy
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49
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Mansueto G, Armani A, Viscomi C, D'Orsi L, De Cegli R, Polishchuk EV, Lamperti C, Di Meo I, Romanello V, Marchet S, Saha PK, Zong H, Blaauw B, Solagna F, Tezze C, Grumati P, Bonaldo P, Pessin JE, Zeviani M, Sandri M, Ballabio A. Transcription Factor EB Controls Metabolic Flexibility during Exercise. Cell Metab 2017; 25:182-196. [PMID: 28011087 PMCID: PMC5241227 DOI: 10.1016/j.cmet.2016.11.003] [Citation(s) in RCA: 213] [Impact Index Per Article: 30.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/19/2016] [Revised: 06/24/2016] [Accepted: 11/05/2016] [Indexed: 11/28/2022]
Abstract
The transcription factor EB (TFEB) is an essential component of lysosomal biogenesis and autophagy for the adaptive response to food deprivation. To address the physiological function of TFEB in skeletal muscle, we have used muscle-specific gain- and loss-of-function approaches. Here, we show that TFEB controls metabolic flexibility in muscle during exercise and that this action is independent of peroxisome proliferator-activated receptor-γ coactivator1α (PGC1α). Indeed, TFEB translocates into the myonuclei during physical activity and regulates glucose uptake and glycogen content by controlling expression of glucose transporters, glycolytic enzymes, and pathways related to glucose homeostasis. In addition, TFEB induces the expression of genes involved in mitochondrial biogenesis, fatty acid oxidation, and oxidative phosphorylation. This coordinated action optimizes mitochondrial substrate utilization, thus enhancing ATP production and exercise capacity. These findings identify TFEB as a critical mediator of the beneficial effects of exercise on metabolism.
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Affiliation(s)
- Gelsomina Mansueto
- Telethon Institute of Genetics and Medicine (TIGEM), Via Campi Flegrei 34, 80078 Pozzuoli, Naples, Italy
| | - Andrea Armani
- Department of Biomedical Science, University of Padova, Padova 35121, Italy
| | - Carlo Viscomi
- MRC Mitochondrial Biology Unit, Cambridge CB2 0XY, UK; Fondazione IRCCS Istituto Neurologico "C. Besta," 20133 Milan, Italy
| | - Luca D'Orsi
- Telethon Institute of Genetics and Medicine (TIGEM), Via Campi Flegrei 34, 80078 Pozzuoli, Naples, Italy
| | - Rossella De Cegli
- Telethon Institute of Genetics and Medicine (TIGEM), Via Campi Flegrei 34, 80078 Pozzuoli, Naples, Italy
| | - Elena V Polishchuk
- Telethon Institute of Genetics and Medicine (TIGEM), Via Campi Flegrei 34, 80078 Pozzuoli, Naples, Italy
| | - Costanza Lamperti
- Fondazione IRCCS Istituto Neurologico "C. Besta," 20133 Milan, Italy
| | - Ivano Di Meo
- Fondazione IRCCS Istituto Neurologico "C. Besta," 20133 Milan, Italy
| | - Vanina Romanello
- Department of Biomedical Science, University of Padova, Padova 35121, Italy; Venetian Institute of Molecular Medicine, Padova 35129, Italy
| | - Silvia Marchet
- Fondazione IRCCS Istituto Neurologico "C. Besta," 20133 Milan, Italy
| | - Pradip K Saha
- Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, TX 77030, USA
| | - Haihong Zong
- Hepatobiliary, Pancreatic, and Intestinal Research Institute, North Sichuan Medical College, Nanchong, Sichuan 637000, China; Departments of Medicine and Molecular Pharmacology, Albert Einstein College of Medicine, Bronx, NY 10461, USA
| | - Bert Blaauw
- Department of Biomedical Science, University of Padova, Padova 35121, Italy
| | - Francesca Solagna
- Department of Biomedical Science, University of Padova, Padova 35121, Italy
| | - Caterina Tezze
- Department of Biomedical Science, University of Padova, Padova 35121, Italy
| | - Paolo Grumati
- Department of Molecular Medicine, University of Padova, Padova 35121, Italy
| | - Paolo Bonaldo
- Department of Molecular Medicine, University of Padova, Padova 35121, Italy
| | - Jeffrey E Pessin
- Departments of Medicine and Molecular Pharmacology, Albert Einstein College of Medicine, Bronx, NY 10461, USA
| | - Massimo Zeviani
- MRC Mitochondrial Biology Unit, Cambridge CB2 0XY, UK; Fondazione IRCCS Istituto Neurologico "C. Besta," 20133 Milan, Italy
| | - Marco Sandri
- Telethon Institute of Genetics and Medicine (TIGEM), Via Campi Flegrei 34, 80078 Pozzuoli, Naples, Italy; Department of Biomedical Science, University of Padova, Padova 35121, Italy; Venetian Institute of Molecular Medicine, Padova 35129, Italy.
| | - Andrea Ballabio
- Telethon Institute of Genetics and Medicine (TIGEM), Via Campi Flegrei 34, 80078 Pozzuoli, Naples, Italy; Medical Genetics, Department of Pediatrics, Federico II University, Via Pansini 5, 80131 Naples, Italy; Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX 77030, USA; Jan and Dan Duncan Neurological Research Institute, Texas Children's Hospital, Houston, TX 77030, USA.
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50
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Chrisam M, Pirozzi M, Castagnaro S, Blaauw B, Polishchuck R, Cecconi F, Grumati P, Bonaldo P. Reactivation of autophagy by spermidine ameliorates the myopathic defects of collagen VI-null mice. Autophagy 2016; 11:2142-52. [PMID: 26565691 PMCID: PMC4835186 DOI: 10.1080/15548627.2015.1108508] [Citation(s) in RCA: 49] [Impact Index Per Article: 6.1] [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: 11/05/2022] Open
Abstract
Autophagy is a self-degradative process responsible for the clearance of damaged or unnecessary cellular components. We have previously found that persistence of dysfunctional organelles due to autophagy failure is a key event in the pathogenesis of COL6/collagen VI-related myopathies, and have demonstrated that reactivation of a proper autophagic flux rescues the muscle defects of Col6a1-null (col6a1−/−) mice. Here we show that treatment with spermidine, a naturally occurring nontoxic autophagy inducer, is beneficial for col6a1−/− mice. Systemic administration of spermidine in col6a1−/− mice reactivated autophagy in a dose-dependent manner, leading to a concurrent amelioration of the histological and ultrastructural muscle defects. The beneficial effects of spermidine, together with its being easy to administer and the lack of overt side effects, open the field for the design of novel nutraceutical strategies for the treatment of muscle diseases characterized by autophagy impairment.
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Affiliation(s)
- Martina Chrisam
- a Department of Molecular Medicine ; University of Padova ; Padova , Italy
| | - Marinella Pirozzi
- b Telethon Institute of Genetic and Medicine (TIGEM) ; Napoli , Italy
| | - Silvia Castagnaro
- a Department of Molecular Medicine ; University of Padova ; Padova , Italy
| | - Bert Blaauw
- c Venetian Institute of Molecular Medicine (VIMM) ; Padova , Italy
| | - Roman Polishchuck
- b Telethon Institute of Genetic and Medicine (TIGEM) ; Napoli , Italy
| | - Francesco Cecconi
- d IRCCS Fondazione Santa Lucia ; Rome , Italy.,e Department of Biology ; University of Rome Tor Vergata ; Rome , Italy.,f Danish Cancer Society Research Center ; Copenhagen , Denmark
| | - Paolo Grumati
- a Department of Molecular Medicine ; University of Padova ; Padova , Italy.,g Institute of Biochemistry II ; Goethe University ; Frankfurt am Main , Germany
| | - Paolo Bonaldo
- a Department of Molecular Medicine ; University of Padova ; Padova , Italy
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