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Ronzoni FL, Giarratana N, Crippa S, Quattrocelli M, Cassano M, Ceccarelli G, Benedetti L, Van Herck J, Cusella De Angelis MG, Vitale M, Galli D, Sampaolesi M. Guide Cells Support Muscle Regeneration and Affect Neuro-Muscular Junction Organization. Int J Mol Sci 2021; 22:1939. [PMID: 33669272 DOI: 10.3390/ijms22041939] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2020] [Revised: 02/04/2021] [Accepted: 02/05/2021] [Indexed: 12/20/2022] Open
Abstract
Muscular regeneration is a complex biological process that occurs during acute injury and chronic degeneration, implicating several cell types. One of the earliest events of muscle regeneration is the inflammatory response, followed by the activation and differentiation of muscle progenitor cells. However, the process of novel neuromuscular junction formation during muscle regeneration is still largely unexplored. Here, we identify by single-cell RNA sequencing and isolate a subset of vessel-associated cells able to improve myogenic differentiation. We termed them 'guide' cells because of their remarkable ability to improve myogenesis without fusing with the newly formed fibers. In vitro, these cells showed a marked mobility and ability to contact the forming myotubes. We found that these cells are characterized by CD44 and CD34 surface markers and the expression of Ng2 and Ncam2. In addition, in a murine model of acute muscle injury and regeneration, injection of guide cells correlated with increased numbers of newly formed neuromuscular junctions. Thus, we propose that guide cells modulate de novo generation of neuromuscular junctions in regenerating myofibers. Further studies are necessary to investigate the origin of those cells and the extent to which they are required for terminal specification of regenerating myofibers.
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Ronzoni FL, Lemeille S, Kuzyakiv R, Sampaolesi M, Jaconi ME. Human fetal mesoangioblasts reveal tissue-dependent transcriptional signatures. Stem Cells Transl Med 2020; 9:575-589. [PMID: 31975556 PMCID: PMC7180296 DOI: 10.1002/sctm.19-0209] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [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: 07/11/2019] [Accepted: 12/22/2019] [Indexed: 01/01/2023] Open
Abstract
Mesoangioblasts (MABs) derived from adult skeletal muscles are well‐studied adult stem/progenitor cells that already entered clinical trials for muscle regeneration in genetic diseases; however, the transcriptional identity of human fetal MABs (fMABs) remains largely unknown. Herein we analyzed the transcriptome of MABs isolated according to canonical markers from fetal atrium, ventricle, aorta, and skeletal muscles (from 9.5 to 13 weeks of age) to uncover specific gene signatures correlating with their peculiar myogenic differentiation properties inherent to their tissue of origin. RNA‐seq analysis revealed for the first time that human MABs from fetal aorta, cardiac (atrial and ventricular), and skeletal muscles display subsets of differentially expressed genes likely representing distinct expression signatures indicative of their original tissue. Identified GO biological processes and KEGG pathways likely account for their distinct differentiation outcomes and provide a set of critical genes possibly predicting future specific differentiation outcomes. This study reveals novel information regarding the potential of human fMABs that may help to improve specific differentiation outcomes relevant for therapeutic muscle regeneration.
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Affiliation(s)
- Flavio L Ronzoni
- Department of Pathology and Immunology, Faculty of Medicine, University of Geneva, Geneva, Switzerland
| | - Sylvain Lemeille
- Department of Pathology and Immunology, Faculty of Medicine, University of Geneva, Geneva, Switzerland
| | - Rostyslav Kuzyakiv
- Department of Pathology and Immunology, Faculty of Medicine, University of Geneva, Geneva, Switzerland
| | - Maurilio Sampaolesi
- Stem Cell Institute, KU Leuven, Leuven, Belgium.,Department of Public Health, Forensic and Experimental Medicine, University of Pavia, Pavia, Italy.,Center for Health Technologies (CHT), University of Pavia, Pavia, Italy
| | - Marisa E Jaconi
- Department of Pathology and Immunology, Faculty of Medicine, University of Geneva, Geneva, Switzerland
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Errico V, Arrabito G, Fornetti E, Fuoco C, Testa S, Saggio G, Rufini S, Cannata S, Desideri A, Falconi C, Gargioli C. High-Density ZnO Nanowires as a Reversible Myogenic-Differentiation Switch. ACS Appl Mater Interfaces 2018; 10:14097-14107. [PMID: 29619824 DOI: 10.1021/acsami.7b19758] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Mesoangioblasts are outstanding candidates for stem-cell therapy and are already being explored in clinical trials. However, a crucial challenge in regenerative medicine is the limited availability of undifferentiated myogenic progenitor cells because growth is typically accompanied by differentiation. Here reversible myogenic-differentiation switching during proliferation is achieved by functionalizing the glass substrate with high-density ZnO nanowires (NWs). Specifically, mesoangioblasts grown on ZnO NWs present a spherical viable undifferentiated cell state without lamellopodia formation during the entire observation time (8 days). Consistently, the myosin heavy chain, typically expressed in skeletal muscle tissue and differentiated myogenic progenitors, is completely absent. Remarkably, NWs do not induce any damage while they reversibly block differentiation, so that the differentiation capabilities are completely recovered upon cell removal from the NW-functionalized substrate and replating on standard culture glass. This is the first evidence of a reversible myogenic-differentiation switch that does not affect the viability. These results can be the first step toward for the in vitro growth of a large number of undifferentiated stem/progenitor cells and therefore can represent a breakthrough for cell-based therapy and tissue engineering.
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Affiliation(s)
- Vito Errico
- Department of Electronic Engineering , University of Rome Tor Vergata , Via del Politecnico 1 , 00133 Rome , Italy
| | - Giuseppe Arrabito
- Department of Electronic Engineering , University of Rome Tor Vergata , Via del Politecnico 1 , 00133 Rome , Italy
| | - Ersilia Fornetti
- Department of Biology , University of Rome Tor Vergata , Via della Ricerca Scientifica 1 , 00133 Rome , Italy
| | - Claudia Fuoco
- Department of Biology , University of Rome Tor Vergata , Via della Ricerca Scientifica 1 , 00133 Rome , Italy
| | - Stefano Testa
- Department of Biology , University of Rome Tor Vergata , Via della Ricerca Scientifica 1 , 00133 Rome , Italy
| | - Giovanni Saggio
- Department of Electronic Engineering , University of Rome Tor Vergata , Via del Politecnico 1 , 00133 Rome , Italy
| | - Stefano Rufini
- Department of Biology , University of Rome Tor Vergata , Via della Ricerca Scientifica 1 , 00133 Rome , Italy
| | - Stefano Cannata
- Department of Biology , University of Rome Tor Vergata , Via della Ricerca Scientifica 1 , 00133 Rome , Italy
| | - Alessandro Desideri
- Department of Biology , University of Rome Tor Vergata , Via della Ricerca Scientifica 1 , 00133 Rome , Italy
| | - Christian Falconi
- Department of Electronic Engineering , University of Rome Tor Vergata , Via del Politecnico 1 , 00133 Rome , Italy
| | - Cesare Gargioli
- Department of Biology , University of Rome Tor Vergata , Via della Ricerca Scientifica 1 , 00133 Rome , Italy
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Iyer PS, Mavoungou LO, Ronzoni F, Zemla J, Schmid-Siegert E, Antonini S, Neff LA, Dorchies OM, Jaconi M, Lekka M, Messina G, Mermod N. Autologous Cell Therapy Approach for Duchenne Muscular Dystrophy using PiggyBac Transposons and Mesoangioblasts. Mol Ther 2018; 26:1093-1108. [PMID: 29503200 PMCID: PMC6079556 DOI: 10.1016/j.ymthe.2018.01.021] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2017] [Revised: 01/24/2018] [Accepted: 01/29/2018] [Indexed: 01/07/2023] Open
Abstract
Duchenne muscular dystrophy (DMD) is a lethal muscle-wasting disease currently without cure. We investigated the use of the PiggyBac transposon for full-length dystrophin expression in murine mesoangioblast (MABs) progenitor cells. DMD murine MABs were transfected with transposable expression vectors for full-length dystrophin and transplanted intramuscularly or intra-arterially into mdx/SCID mice. Intra-arterial delivery indicated that the MABs could migrate to regenerating muscles to mediate dystrophin expression. Intramuscular transplantation yielded dystrophin expression in 11%-44% of myofibers in murine muscles, which remained stable for the assessed period of 5 months. The satellite cells isolated from transplanted muscles comprised a fraction of MAB-derived cells, indicating that the transfected MABs may colonize the satellite stem cell niche. Transposon integration site mapping by whole-genome sequencing indicated that 70% of the integrations were intergenic, while none was observed in an exon. Muscle resistance assessment by atomic force microscopy indicated that 80% of fibers showed elasticity properties restored to those of wild-type muscles. As measured in vivo, transplanted muscles became more resistant to fatigue. This study thus provides a proof-of-principle that PiggyBac transposon vectors may mediate full-length dystrophin expression as well as functional amelioration of the dystrophic muscles within a potential autologous cell-based therapeutic approach of DMD.
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Affiliation(s)
- Pavithra S Iyer
- Institute of Biotechnology, University of Lausanne, Lausanne, Switzerland
| | - Lionel O Mavoungou
- Institute of Biotechnology, University of Lausanne, Lausanne, Switzerland
| | - Flavio Ronzoni
- Department of Pathology and Immunology, Faculty of Medicine, University of Geneva, 1211 Geneva, Switzerland
| | - Joanna Zemla
- Institute of Nuclear Physics, Polish Academy of Sciences, 31342 Krakow, Poland
| | | | | | - Laurence A Neff
- School of Pharmaceutical Sciences, University of Geneva and University of Lausanne, 1211 Geneva, Switzerland
| | - Olivier M Dorchies
- School of Pharmaceutical Sciences, University of Geneva and University of Lausanne, 1211 Geneva, Switzerland
| | - Marisa Jaconi
- Department of Pathology and Immunology, Faculty of Medicine, University of Geneva, 1211 Geneva, Switzerland
| | - Malgorzata Lekka
- Institute of Nuclear Physics, Polish Academy of Sciences, 31342 Krakow, Poland
| | | | - Nicolas Mermod
- Institute of Biotechnology, University of Lausanne, Lausanne, Switzerland.
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Giovannelli G, Giacomazzi G, Grosemans H, Sampaolesi M. Morphological and functional analyses of skeletal muscles from an immunodeficient animal model of limb-girdle muscular dystrophy type 2E. Muscle Nerve 2018; 58:133-144. [PMID: 29476695 PMCID: PMC6099247 DOI: 10.1002/mus.26112] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/20/2018] [Indexed: 11/21/2022]
Abstract
INTRODUCTION Limb-girdle muscular dystrophy type 2E (LGMD2E) is caused by mutations in the β-sarcoglycan gene, which is expressed in skeletal, cardiac, and smooth muscles. β-Sarcoglycan-deficient (Sgcb-null) mice develop severe muscular dystrophy and cardiomyopathy with focal areas of necrosis. METHODS In this study we performed morphological (histological and cellular characterization) and functional (isometric tetanic force and fatigue) analyses in dystrophic mice. Comparison studies were carried out in 1-month-old (clinical onset of the disease) and 7-month-old control mice (C57Bl/6J, Rag2/γc-null) and immunocompetent and immunodeficient dystrophic mice (Sgcb-null and Sgcb/Rag2/γc-null, respectively). RESULTS We found that the lack of an immunological system resulted in an increase of calcification in striated muscles without impairing extensor digitorum longus muscle performance. Sgcb/Rag2/γc-null muscles showed a significant reduction of alkaline phosphate-positive mesoangioblasts. DISCUSSION The immunological system counteracts skeletal muscle degeneration in the murine model of LGMD2E. Muscle Nerve, 2018.
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Affiliation(s)
- Gaia Giovannelli
- Department of Neurosciences and Imaging“G. d'Annunzio” UniversityChietiItaly
- Translational Cardiomyology, Stem Cell Research InstituteCatholic University of LeuvenHerestraat 49 O&N4–Bus 814LeuvenB‐3000Belgium
| | - Giorgia Giacomazzi
- Translational Cardiomyology, Stem Cell Research InstituteCatholic University of LeuvenHerestraat 49 O&N4–Bus 814LeuvenB‐3000Belgium
| | - Hanne Grosemans
- Translational Cardiomyology, Stem Cell Research InstituteCatholic University of LeuvenHerestraat 49 O&N4–Bus 814LeuvenB‐3000Belgium
| | - Maurilio Sampaolesi
- Translational Cardiomyology, Stem Cell Research InstituteCatholic University of LeuvenHerestraat 49 O&N4–Bus 814LeuvenB‐3000Belgium
- Human Anatomy Unit, Department of Public Health, Experimental and Forensic MedicineUniversity of PaviaPaviaItaly
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Fuoco C, Rizzi R, Biondo A, Longa E, Mascaro A, Shapira-Schweitzer K, Kossovar O, Benedetti S, Salvatori ML, Santoleri S, Testa S, Bernardini S, Bottinelli R, Bearzi C, Cannata SM, Seliktar D, Cossu G, Gargioli C. In vivo generation of a mature and functional artificial skeletal muscle. EMBO Mol Med 2015; 7:411-22. [PMID: 25715804 PMCID: PMC4403043 DOI: 10.15252/emmm.201404062] [Citation(s) in RCA: 68] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
Extensive loss of skeletal muscle tissue results in mutilations and severe loss of function. In vitro-generated artificial muscles undergo necrosis when transplanted in vivo before host angiogenesis may provide oxygen for fibre survival. Here, we report a novel strategy based upon the use of mouse or human mesoangioblasts encapsulated inside PEG-fibrinogen hydrogel. Once engineered to express placental-derived growth factor, mesoangioblasts attract host vessels and nerves, contributing to in vivo survival and maturation of newly formed myofibres. When the graft was implanted underneath the skin on the surface of the tibialis anterior, mature and aligned myofibres formed within several weeks as a complete and functional extra muscle. Moreover, replacing the ablated tibialis anterior with PEG-fibrinogen-embedded mesoangioblasts also resulted in an artificial muscle very similar to a normal tibialis anterior. This strategy opens the possibility for patient-specific muscle creation for a large number of pathological conditions involving muscle tissue wasting.
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Affiliation(s)
- Claudia Fuoco
- Department of Biology, Tor Vergata Rome University, Rome, Italy
| | - Roberto Rizzi
- IRCCS MultiMedica, Milan, Italy Cell Biology and Neurobiology Institute, National Research Council of Italy, Rome, Italy
| | | | - Emanuela Longa
- Department of Molecular Medicine and Interdepartmental Centre for Research in Sport Biology and Medicine, University of Pavia, Pavia, Italy
| | - Anna Mascaro
- Department of Molecular Medicine and Interdepartmental Centre for Research in Sport Biology and Medicine, University of Pavia, Pavia, Italy
| | | | - Olga Kossovar
- Faculty of Biomedical Engineering, Technion-Israel Institute of Technology, Haifa, Israel
| | - Sara Benedetti
- Department of Cell and Developmental Biology, University College London, London, UK
| | | | | | - Stefano Testa
- Department of Biology, Tor Vergata Rome University, Rome, Italy
| | | | - Roberto Bottinelli
- Department of Molecular Medicine and Interdepartmental Centre for Research in Sport Biology and Medicine, University of Pavia, Pavia, Italy Fondazione Salvatore Maugeri (IRCCS), Scientific Institute of Pavia, Pavia, Italy
| | - Claudia Bearzi
- IRCCS MultiMedica, Milan, Italy Cell Biology and Neurobiology Institute, National Research Council of Italy, Rome, Italy
| | | | - Dror Seliktar
- Faculty of Biomedical Engineering, Technion-Israel Institute of Technology, Haifa, Israel
| | - Giulio Cossu
- Department of Cell and Developmental Biology, University College London, London, UK Institute of Inflammation and Repair, University of Manchester, Manchester, UK
| | - Cesare Gargioli
- Department of Biology, Tor Vergata Rome University, Rome, Italy IRCCS MultiMedica, Milan, Italy
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Rinaldi F, Perlingeiro RCR. Stem cells for skeletal muscle regeneration: therapeutic potential and roadblocks. Transl Res 2014; 163:409-17. [PMID: 24299739 PMCID: PMC3976768 DOI: 10.1016/j.trsl.2013.11.006] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/16/2013] [Revised: 11/01/2013] [Accepted: 11/07/2013] [Indexed: 02/06/2023]
Abstract
Conditions involving muscle wasting, such as muscular dystrophies, cachexia, and sarcopenia, would benefit from approaches that promote skeletal muscle regeneration. Stem cells are particularly attractive because they are able to differentiate into specialized cell types while retaining the ability to self-renew and, thus, provide a long-term response. This review will discuss recent advancements on different types of stem cells that have been attributed to be endowed with muscle regenerative potential. We will discuss the nature of these cells and their advantages and disadvantages in regards to therapy for muscular dystrophies.
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Affiliation(s)
- Fabrizio Rinaldi
- Department of Medicine, Lillehei Heart Institute, University of Minnesota, Minneapolis, Minn
| | - Rita C R Perlingeiro
- Department of Medicine, Lillehei Heart Institute, University of Minnesota, Minneapolis, Minn.
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Fuoco C, Salvatori ML, Biondo A, Shapira-Schweitzer K, Santoleri S, Antonini S, Bernardini S, Tedesco FS, Cannata S, Seliktar D, Cossu G, Gargioli C. Injectable polyethylene glycol-fibrinogen hydrogel adjuvant improves survival and differentiation of transplanted mesoangioblasts in acute and chronic skeletal-muscle degeneration. Skelet Muscle 2012; 2:24. [PMID: 23181356 PMCID: PMC3579757 DOI: 10.1186/2044-5040-2-24] [Citation(s) in RCA: 70] [Impact Index Per Article: 5.8] [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] [Subscribe] [Scholar Register] [Received: 08/13/2012] [Accepted: 10/25/2012] [Indexed: 01/03/2023] Open
Abstract
UNLABELLED BACKGROUND Cell-transplantation therapies have attracted attention as treatments for skeletal-muscle disorders; however, such research has been severely limited by poor cell survival. Tissue engineering offers a potential solution to this problem by providing biomaterial adjuvants that improve survival and engraftment of donor cells. METHODS In this study, we investigated the use of intra-muscular transplantation of mesoangioblasts (vessel-associated progenitor cells), delivered with an injectable hydrogel biomaterial directly into the tibialis anterior (TA) muscle of acutely injured or dystrophic mice. The hydrogel cell carrier, made from a polyethylene glycol-fibrinogen (PF) matrix, is polymerized in situ together with mesoangioblasts to form a resorbable cellularized implant. RESULTS Mice treated with PF and mesoangioblasts showed enhanced cell engraftment as a result of increased survival and differentiation compared with the same cell population injected in aqueous saline solution. CONCLUSION Both PF and mesoangioblasts are currently undergoing separate clinical trials: their combined use may increase chances of efficacy for localized disorders of skeletal muscle.
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Affiliation(s)
- Claudia Fuoco
- Department of Biology, Tor Vergata Rome University, Rome, Italy
| | | | - Antonella Biondo
- Division of Regenerative Medicine, San Raffaele Scientific Institute, Milan, Italy
| | | | - Sabrina Santoleri
- Division of Regenerative Medicine, San Raffaele Scientific Institute, Milan, Italy
| | | | | | - Francesco Saverio Tedesco
- Division of Regenerative Medicine, San Raffaele Scientific Institute, Milan, Italy
- Department of Cell and Developmental Biology, UCL, London, UK
| | - Stefano Cannata
- Department of Biology, Tor Vergata Rome University, Rome, Italy
| | - Dror Seliktar
- Faculty of Biomedical Engineering, Technion – Israel Institute of Technology, Haifa, Israel
| | - Giulio Cossu
- Division of Regenerative Medicine, San Raffaele Scientific Institute, Milan, Italy
- Department of Cell and Developmental Biology, UCL, London, UK
| | - Cesare Gargioli
- Department of Biology, Tor Vergata Rome University, Rome, Italy
- IRCCS MultiMedica, Milan, Italy
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Díaz-Manera J, Gallardo E, de Luna N, Navas M, Soria L, Garibaldi M, Rojas-García R, Tonlorenzi R, Cossu G, Illa I. The increase of pericyte population in human neuromuscular disorders supports their role in muscle regeneration in vivo. J Pathol 2012; 228:544-53. [PMID: 22847756 DOI: 10.1002/path.4083] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [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: 05/02/2012] [Revised: 07/08/2012] [Accepted: 07/25/2012] [Indexed: 12/24/2022]
Abstract
Pericytes are periendothelial cells that have been involved in many different functions including a possible role as mesodermal stem/progenitor cells. In the present study we demonstrate that alkaline phosphatase (AP) expression is specific for human muscular pericytes and can be used as a marker to identify them in skeletal muscle biopsies. We studied the pericyte population in skeletal muscle biopsies from controls, myopathic and neuropathic patients. We observed a significant increase in the number of pericytes only in myopathies that correlated with the number of NCAM(+) fibres, suggesting that an active muscular degenerative/regenerative process is related to an increase in the pericyte population. AP(+) pericytes sorted from skeletal muscle samples were able to activate the myogenic programme and fuse with both mononucleate satellite cells and mature multinucleated myotubes in vitro, demonstrating that they could participate in muscle regeneration. In accordance, pericytes expressing the myogenic transcription factor MyoD were found in biopsies of myopathic biopsies. All these data support the hypothesis that, apart from satellite cells, pericytes may play an important role in muscle regeneration in adult human muscles in vivo.
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Affiliation(s)
- Jordi Díaz-Manera
- Neuromuscular Disorders Unit, Neurology Department, Universitat Autònoma de Barcelona, Hospital de la Santa Creu i Sant Pau, Barcelona, Spain; Centro de Investigación Biomédica en Red en Enfermedades Neurodegenerativas (CIBERNED), Madrid, Spain
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MOROSETTI R, GLIUBIZZI C, BROCCOLINI A, SANCRICCA C, MIRABELLA M. Mesoangioblasts of inclusion-body myositis: a twofold tool to study pathogenic mechanisms and enhance defective muscle regeneration. Acta Myol 2011; 30:24-8. [PMID: 21842589 PMCID: PMC3185835] [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] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
Mesoangioblasts are a class of adult stem cells of mesoderm origin, potentially useful for the treatment of primitive myopathies of different etiology. Extensive in vitro and in vivo studies in animal models of muscular dystrophy have demonstrated the ability of mesoangioblast to repair skeletal muscle when injected intra-arterially. In a previous work we demonstrated that mesoangioblasts obtained from diagnostic muscle biopsies of IBM patients display a defective differentiation down skeletal muscle and this block can be corrected in vitro by transient MyoD transfection. We are currently investigating different pathways involved in mesoangioblasts skeletal muscle differentiation and exploring alternative stimulatory approaches not requiring extensive cell manipulation. This will allow to obtain safe, easy and efficient molecular or pharmacological modulation of pro-myogenic pathways in IBM mesoangioblasts. It is of crucial importance to identify factors (ie. cytokines, growth factors) produced by muscle or inflammatory cells and released in the surrounding milieu that are able to regulate the differentiation ability of IBM mesoangioblasts. To promote myogenic differentiation of endogenous mesoangioblasts in IBM muscle, the modulation of such target molecules selectively dysregulated would be a more handy approach to enhance muscle regeneration compared to transplantation techniques. Studies on the biological characteristics of IBM mesoangioblasts with their aberrant differentiation behavior, the signaling pathways possibly involved in their differentiation block and the possible strategies to overcome it in vivo, might provide new insights to better understand the etiopathogenesis of this crippling disorder and to identify molecular targets susceptible of therapeutic modulation.
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Affiliation(s)
- R. MOROSETTI
- Address for correspondence: Massimiliano Mirabella, Roberta Morosetti, Institute of Neurology, Department of Neurosciences,
Catholic University, Largo A. Gemelli 8, 00168 Rome, Italy. Tel. +39 06 30154303. Fax: +39 06 35501909. ;
| | | | | | | | - M. MIRABELLA
- Address for correspondence: Massimiliano Mirabella, Roberta Morosetti, Institute of Neurology, Department of Neurosciences,
Catholic University, Largo A. Gemelli 8, 00168 Rome, Italy. Tel. +39 06 30154303. Fax: +39 06 35501909. ;
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