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Rossin F, Avitabile E, Catarinella G, Fornetti E, Testa S, Oliverio S, Gargioli C, Cannata S, Latella L, Di Sano F. Reticulon-1C Involvement in Muscle Regeneration. Metabolites 2021; 11:metabo11120855. [PMID: 34940613 PMCID: PMC8708675 DOI: 10.3390/metabo11120855] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2021] [Revised: 11/25/2021] [Accepted: 12/03/2021] [Indexed: 12/03/2022] Open
Abstract
Skeletal muscle is a very dynamic and plastic tissue, being essential for posture, locomotion and respiratory movement. Muscle atrophy or genetic muscle disorders, such as muscular dystrophies, are characterized by myofiber degeneration and replacement with fibrotic tissue. Recent studies suggest that changes in muscle metabolism such as mitochondrial dysfunction and dysregulation of intracellular Ca2+ homeostasis are implicated in many adverse conditions affecting skeletal muscle. Accumulating evidence also suggests that ER stress may play an important part in the pathogenesis of inflammatory myopathies and genetic muscle disorders. Among the different known proteins regulating ER structure and function, we focused on RTN-1C, a member of the reticulon proteins family localized on the ER membrane. We previously demonstrated that RTN-1C expression modulates cytosolic calcium concentration and ER stress pathway. Moreover, we recently reported a role for the reticulon protein in autophagy regulation. In this study, we found that muscle differentiation process positively correlates with RTN-1C expression and UPR pathway up-regulation during myogenesis. To better characterize the role of the reticulon protein alongside myogenic and muscle regenerative processes, we performed in vivo experiments using either a model of muscle injury or a photogenic model for Duchenne muscular dystrophy. The obtained results revealed RTN-1C up-regulation in mice undergoing active regeneration and localization in the injured myofibers. The presented results strongly suggested that RTN-1C, as a protein involved in key aspects of muscle metabolism, may represent a new target to promote muscle regeneration and repair upon injury.
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Affiliation(s)
- Federica Rossin
- Department of Biology, University of Rome ‘Tor Vergata’, 00133 Rome, Italy; (E.A.); (E.F.); (S.T.); (S.O.); (C.G.); (S.C.); (F.D.S.)
- Correspondence:
| | - Elena Avitabile
- Department of Biology, University of Rome ‘Tor Vergata’, 00133 Rome, Italy; (E.A.); (E.F.); (S.T.); (S.O.); (C.G.); (S.C.); (F.D.S.)
| | - Giorgia Catarinella
- Epigenetics and Regenerative Medicine, IRCCS Fondazione Santa Lucia, 00179 Rome, Italy; (G.C.); (L.L.)
- DAHFMO, Unit of Histology and Medical Embryology, Sapienza University of Rome, 00185 Rome, Italy
| | - Ersilia Fornetti
- Department of Biology, University of Rome ‘Tor Vergata’, 00133 Rome, Italy; (E.A.); (E.F.); (S.T.); (S.O.); (C.G.); (S.C.); (F.D.S.)
| | - Stefano Testa
- Department of Biology, University of Rome ‘Tor Vergata’, 00133 Rome, Italy; (E.A.); (E.F.); (S.T.); (S.O.); (C.G.); (S.C.); (F.D.S.)
| | - Serafina Oliverio
- Department of Biology, University of Rome ‘Tor Vergata’, 00133 Rome, Italy; (E.A.); (E.F.); (S.T.); (S.O.); (C.G.); (S.C.); (F.D.S.)
| | - Cesare Gargioli
- Department of Biology, University of Rome ‘Tor Vergata’, 00133 Rome, Italy; (E.A.); (E.F.); (S.T.); (S.O.); (C.G.); (S.C.); (F.D.S.)
| | - Stefano Cannata
- Department of Biology, University of Rome ‘Tor Vergata’, 00133 Rome, Italy; (E.A.); (E.F.); (S.T.); (S.O.); (C.G.); (S.C.); (F.D.S.)
| | - Lucia Latella
- Epigenetics and Regenerative Medicine, IRCCS Fondazione Santa Lucia, 00179 Rome, Italy; (G.C.); (L.L.)
- Institute of Translational Pharmacology, National Research Council of Italy, 00133 Rome, Italy
| | - Federica Di Sano
- Department of Biology, University of Rome ‘Tor Vergata’, 00133 Rome, Italy; (E.A.); (E.F.); (S.T.); (S.O.); (C.G.); (S.C.); (F.D.S.)
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Reali V, Mehdawy B, Nardacci R, Filomeni G, Risuglia A, Rossin F, Antonioli M, Marsella C, Fimia GM, Piacentini M, Di Sano F. Reticulon protein-1C is a key component of MAMs. Biochim Biophys Acta 2015; 1853:733-45. [PMID: 25573430 DOI: 10.1016/j.bbamcr.2014.12.031] [Citation(s) in RCA: 11] [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] [Subscribe] [Scholar Register] [Received: 10/19/2014] [Revised: 12/17/2014] [Accepted: 12/27/2014] [Indexed: 12/01/2022]
Abstract
The endoplasmic reticulum (ER) is a key organelle fundamental for the maintenance of cellular homeostasis and the determination of cell fate under stress conditions. Reticulon-1C (RTN-1C) is a member of the reticulon family proteins localized primarily on the ER membrane and known to regulate ER structure and function. Several cellular processes depend on the structural and functional crosstalk between different organelles, particularly on the endoplasmic reticulum and mitochondria. These dynamic contacts, called mitochondria-associated ER membranes (MAMs), are essential for the maintenance of mitochondrial structure and participate in lipid and calcium exchanges between the two organelles. In this study we investigated the impact of RTN-1C modulation on mitochondrial dynamics. We demonstrate that RTN-1C controls mitochondrial structure and function affecting intracellular Ca2+ homeostasis and lipid exchange between ER and mitochondria. We propose that these events depend on RTN-1C involvement in the regulation of ER-mitochondria cross-talk and define a role for RTN-1C in maintaining the function of contacts between the two organelles.
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Affiliation(s)
- Valentina Reali
- Department of Biology, University of Rome 'Tor Vergata', Via della Ricerca Scientifica, 00133 Rome, Italy
| | - Bisan Mehdawy
- European Centre for Brain Research, IRCSS Santa Lucia Foundation, Via del Fosso di Fiorano 64, 00143 Rome, Italy
| | - Roberta Nardacci
- National Institute for Infectious Diseases, IRCCS 'L. Spallanzani', Via Portuense, 00149 Rome, Italy
| | - Giuseppe Filomeni
- Cell Stress and Survival Unit, Danish Cancer Society Research Center, Strandboulevarden 49, 2100 Copenhagen, Denmark
| | - Anna Risuglia
- Department of Biology, University of Rome 'Tor Vergata', Via della Ricerca Scientifica, 00133 Rome, Italy
| | - Federica Rossin
- Department of Biology, University of Rome 'Tor Vergata', Via della Ricerca Scientifica, 00133 Rome, Italy
| | - Manuela Antonioli
- Department of Biology, University of Rome 'Tor Vergata', Via della Ricerca Scientifica, 00133 Rome, Italy; National Institute for Infectious Diseases, IRCCS 'L. Spallanzani', Via Portuense, 00149 Rome, Italy
| | - Claudia Marsella
- Department of Biology, University of Rome 'Tor Vergata', Via della Ricerca Scientifica, 00133 Rome, Italy; National Institute for Infectious Diseases, IRCCS 'L. Spallanzani', Via Portuense, 00149 Rome, Italy
| | - Gian Maria Fimia
- National Institute for Infectious Diseases, IRCCS 'L. Spallanzani', Via Portuense, 00149 Rome, Italy; Department of Biological and Environmental Sciences and Technologies (DiSTeBA), University of Salento, Lecce, Italy
| | - Mauro Piacentini
- Department of Biology, University of Rome 'Tor Vergata', Via della Ricerca Scientifica, 00133 Rome, Italy; National Institute for Infectious Diseases, IRCCS 'L. Spallanzani', Via Portuense, 00149 Rome, Italy
| | - Federica Di Sano
- Department of Biology, University of Rome 'Tor Vergata', Via della Ricerca Scientifica, 00133 Rome, Italy.
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