1
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Enzer NA, Chiles J, Mason S, Shirahata T, Castro V, Regan E, Choi B, Yuan NF, Diaz AA, Washko GR, McDonald ML, Estépar RSJ, Ash SY. Proteomics and machine learning in the prediction and explanation of low pectoralis muscle area. Sci Rep 2024; 14:17981. [PMID: 39097658 PMCID: PMC11297919 DOI: 10.1038/s41598-024-68447-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2024] [Accepted: 07/23/2024] [Indexed: 08/05/2024] Open
Abstract
Low muscle mass is associated with numerous adverse outcomes independent of other associated comorbid diseases. We aimed to predict and understand an individual's risk for developing low muscle mass using proteomics and machine learning. We identified eight biomarkers associated with low pectoralis muscle area (PMA). We built three random forest classification models that used either clinical measures, feature selected biomarkers, or both to predict development of low PMA. The area under the receiver operating characteristic curve for each model was: clinical-only = 0.646, biomarker-only = 0.740, and combined = 0.744. We displayed the heterogenetic nature of an individual's risk for developing low PMA and identified two distinct subtypes of participants who developed low PMA. While additional validation is required, our methods for identifying and understanding individual and group risk for low muscle mass could be used to enable developments in the personalized prevention of low muscle mass.
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Affiliation(s)
- Nicholas A Enzer
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Brigham and Women's Hospital, Boston, MA, USA
- Applied Chest Imaging Laboratory, Brigham and Women's Hospital, Boston, MA, USA
| | - Joe Chiles
- Division of Pulmonary, Allergy and Critical Care Medicine, Heersink School of Medicine, The University of Alabama at Birmingham, Birmingham, AL, USA
- COPDGene Study Consortium, Denver, CO, USA
| | - Stefanie Mason
- Applied Chest Imaging Laboratory, Brigham and Women's Hospital, Boston, MA, USA
| | - Toru Shirahata
- Applied Chest Imaging Laboratory, Brigham and Women's Hospital, Boston, MA, USA
- Department of Respiratory Medicine, Saitama Medical University Hospital, Kawagoe, Japan
| | - Victor Castro
- Boston University School of Medicine, Boston, MA, USA
| | - Elizabeth Regan
- COPDGene Study Consortium, Denver, CO, USA
- Division of Rheumatology, Department of Medicine, National Jewish Health, Denver, CO, USA
| | - Bina Choi
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Brigham and Women's Hospital, Boston, MA, USA
- Applied Chest Imaging Laboratory, Brigham and Women's Hospital, Boston, MA, USA
| | - Nancy F Yuan
- Department of Biomedical Informatics, University of California at San Diego, San Diego, CA, USA
| | - Alejandro A Diaz
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Brigham and Women's Hospital, Boston, MA, USA
- Applied Chest Imaging Laboratory, Brigham and Women's Hospital, Boston, MA, USA
- COPDGene Study Consortium, Denver, CO, USA
| | - George R Washko
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Brigham and Women's Hospital, Boston, MA, USA
- Applied Chest Imaging Laboratory, Brigham and Women's Hospital, Boston, MA, USA
- COPDGene Study Consortium, Denver, CO, USA
| | - Merry-Lynn McDonald
- Division of Pulmonary, Allergy and Critical Care Medicine, Heersink School of Medicine, The University of Alabama at Birmingham, Birmingham, AL, USA
- COPDGene Study Consortium, Denver, CO, USA
| | - Raúl San José Estépar
- Applied Chest Imaging Laboratory, Brigham and Women's Hospital, Boston, MA, USA
- Department of Radiology, Brigham and Women's Hospital, Boston, MA, USA
| | - Samuel Y Ash
- Department of Critical Care Medicine, South Shore Hospital, 55 Fogg Road, South Weymouth, MA, 02190, USA.
- Department of Medicine, Tufts University School of Medicine, Boston, MA, USA.
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2
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Tong D, Gobert S, Reuzeau A, Farges JC, Leveque M, Bolon M, Costantini A, Pasdeloup M, Lafont J, Ducret M, Bekhouche M. Dental pulp mesenchymal stem cells-response to fibrin hydrogel reveals ITGA2 and MMPs expression. Heliyon 2024; 10:e32891. [PMID: 39027533 PMCID: PMC11255596 DOI: 10.1016/j.heliyon.2024.e32891] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2023] [Revised: 06/07/2024] [Accepted: 06/11/2024] [Indexed: 07/20/2024] Open
Abstract
Regenerative endodontic procedures (REP) aim at reestablishing tooth vitality by replacing the irreversibly damaged dental pulp removed by the dental practitioner with a new functional one. The current treatment of advanced caries relies on the replacement of the inflamed or necrosed dental pulp with an inert filling material. This leads to a functional but non-vital tooth, which lacks the ability to sense dental tissue damage, and to protect from further bacterial attack. Therapeutic strategies inspired by tissue engineering called REP propose to regenerate a fully functional dental pulp directly in the canal space. Promising results were obtained using dental pulp mesenchymal stem cells (DP-MSCs) in combination with bio-inspired artificial and temporary 3D hydrogels made of extracellular matrix molecules such as collagen and fibrin biomacromolecules. However, the uncontrolled mechanisms of DP regeneration from DP-MSCs in 3D biomacromolecules fail to regenerate a fully functional DP and can induce fibrotic scarring or mineralized tissue formation to a non-negligible extent. The lack of knowledge regarding the early molecular mechanisms initiated by DP-MSCs seeded in ECM-made hydrogels is a scientific lock for REP. In this study, we investigated the early DP-MSC-response in a 3D fibrin hydrogel. DP-MSCs isolated from human third molars were cultured for 24 h in the fibrin hydrogel. The differential transcript levels of extracellular and cell surface genes were screened with 84-gene PCR array. Out of the 84 genes screened, 9 were found to be overexpressed, including those coding for the integrin alpha 2 subunit, the collagenase MMP1 and stromelysins MMP3, MMP10 and MMP12. Over-expression of ITGA2 was confirmed by RT-qPCR. The expression of alpha 2 integrin subunit protein was assessed over time by immunoblot and immunofluorescence staining. The increase in the transcript level of MMP1, MMP3, MM10 and MMP12 was confirmed by RT-qPCR. The overexpression of MMP1 and 3 at the protein level was assessed by immunoblot. MMP3 expression by DP-MSCs was observed by immunofluorescence staining. This work demonstrates overexpression of ITGA2 and of MMP1, 3, 10 and 12 by DP-MSCs cultured in a fibrin hydrogel. The main preliminary extracellular and cell surface response of the DP-MSCs to fibrin hydrogel seems to rely on a ITGA2/MMP3 axis. Further investigations are needed to precisely decipher the role of this axis in dental pulp tissue building. Nevertheless, this work identifies extracellular and cell surface molecules that could be potential checkpoints to be targeted to guide proper dental pulp tissue regeneration.
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Affiliation(s)
- David Tong
- LBTI - Tissue Biology and Therapeutic Engineering Laboratory, UMR5305, CNRS/Université, Claude Bernard Lyon 1, France
| | - Stéphanie Gobert
- LBTI - Tissue Biology and Therapeutic Engineering Laboratory, UMR5305, CNRS/Université, Claude Bernard Lyon 1, France
| | - Alicia Reuzeau
- LBTI - Tissue Biology and Therapeutic Engineering Laboratory, UMR5305, CNRS/Université, Claude Bernard Lyon 1, France
| | - Jean-Christophe Farges
- LBTI - Tissue Biology and Therapeutic Engineering Laboratory, UMR5305, CNRS/Université, Claude Bernard Lyon 1, France
- Odontology Faculty of Lyon, University Lyon 1, France
- Hospices Civils de Lyon, France
| | - Marianne Leveque
- LBTI - Tissue Biology and Therapeutic Engineering Laboratory, UMR5305, CNRS/Université, Claude Bernard Lyon 1, France
| | - Marie Bolon
- LBTI - Tissue Biology and Therapeutic Engineering Laboratory, UMR5305, CNRS/Université, Claude Bernard Lyon 1, France
| | - Arthur Costantini
- LBTI - Tissue Biology and Therapeutic Engineering Laboratory, UMR5305, CNRS/Université, Claude Bernard Lyon 1, France
- Hospices Civils de Lyon, France
| | - Marielle Pasdeloup
- LBTI - Tissue Biology and Therapeutic Engineering Laboratory, UMR5305, CNRS/Université, Claude Bernard Lyon 1, France
| | - Jérôme Lafont
- LBTI - Tissue Biology and Therapeutic Engineering Laboratory, UMR5305, CNRS/Université, Claude Bernard Lyon 1, France
| | - Maxime Ducret
- LBTI - Tissue Biology and Therapeutic Engineering Laboratory, UMR5305, CNRS/Université, Claude Bernard Lyon 1, France
- Odontology Faculty of Lyon, University Lyon 1, France
| | - Mourad Bekhouche
- LBTI - Tissue Biology and Therapeutic Engineering Laboratory, UMR5305, CNRS/Université, Claude Bernard Lyon 1, France
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3
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Yin Y, He GJ, Hu S, Tse EHY, Cheung TH. Muscle stem cell niche dynamics during muscle homeostasis and regeneration. Curr Top Dev Biol 2024; 158:151-177. [PMID: 38670704 DOI: 10.1016/bs.ctdb.2024.02.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/28/2024]
Abstract
The process of skeletal muscle regeneration involves a coordinated interplay of specific cellular and molecular interactions within the injury site. This review provides an overview of the cellular and molecular components in regenerating skeletal muscle, focusing on how these cells or molecules in the niche regulate muscle stem cell functions. Dysfunctions of muscle stem cell-to-niche cell communications during aging and disease will also be discussed. A better understanding of how niche cells coordinate with muscle stem cells for muscle repair will greatly aid the development of therapeutic strategies for treating muscle-related disorders.
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Affiliation(s)
- Yishu Yin
- Division of Life Science, Center for Stem Cell Research, HKUST-Nan Fung Life Sciences Joint Laboratory, State Key Laboratory of Molecular Neuroscience, Molecular Neuroscience Center, The Hong Kong University of Science and Technology, Hong Kong, P.R. China
| | - Gary J He
- Hong Kong Center for Neurodegenerative Diseases, Hong Kong, P.R. China
| | - Shenyuan Hu
- Division of Life Science, Center for Stem Cell Research, HKUST-Nan Fung Life Sciences Joint Laboratory, State Key Laboratory of Molecular Neuroscience, Molecular Neuroscience Center, The Hong Kong University of Science and Technology, Hong Kong, P.R. China
| | - Erin H Y Tse
- Division of Life Science, Center for Stem Cell Research, HKUST-Nan Fung Life Sciences Joint Laboratory, State Key Laboratory of Molecular Neuroscience, Molecular Neuroscience Center, The Hong Kong University of Science and Technology, Hong Kong, P.R. China; Hong Kong Center for Neurodegenerative Diseases, Hong Kong, P.R. China
| | - Tom H Cheung
- Division of Life Science, Center for Stem Cell Research, HKUST-Nan Fung Life Sciences Joint Laboratory, State Key Laboratory of Molecular Neuroscience, Molecular Neuroscience Center, The Hong Kong University of Science and Technology, Hong Kong, P.R. China; Hong Kong Center for Neurodegenerative Diseases, Hong Kong, P.R. China; Guangdong Provincial Key Laboratory of Brain Science, Disease and Drug Development, Shenzhen-Hong Kong Institute of Brain Science, HKUST Shenzhen Research Institute, Shenzhen, P.R. China.
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4
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Enzer NA, Chiles J, Mason S, Shirahata T, Castro V, Regan E, Choi B, Yuan NF, Diaz AA, Washko GR, McDonald ML, Estépar RSJ, Ash SY. Proteomics and Machine Learning in the Prediction and Explanation of Low Pectoralis Muscle Area. RESEARCH SQUARE 2024:rs.3.rs-3957125. [PMID: 38496412 PMCID: PMC10942559 DOI: 10.21203/rs.3.rs-3957125/v1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/19/2024]
Abstract
Low muscle mass is associated with numerous adverse outcomes independent of other associated comorbid diseases. We aimed to predict and understand an individual's risk for developing low muscle mass using proteomics and machine learning. We identified 8 biomarkers associated with low pectoralis muscle area (PMA). We built 3 random forest classification models that used either clinical measures, feature selected biomarkers, or both to predict development of low PMA. The area under the receiver operating characteristic curve for each model was: clinical-only = 0.646, biomarker-only = 0.740, and combined = 0.744. We displayed the heterogenetic nature of an individual's risk for developing low PMA and identified 2 distinct subtypes of participants who developed low PMA. While additional validation is required, our methods for identifying and understanding individual and group risk for low muscle mass could be used to enable developments in the personalized prevention of low muscle mass.
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5
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Robertson R, Li S, Filippelli RL, Chang NC. Muscle stem cell dysfunction in rhabdomyosarcoma and muscular dystrophy. Curr Top Dev Biol 2024; 158:83-121. [PMID: 38670717 DOI: 10.1016/bs.ctdb.2024.01.019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/28/2024]
Abstract
Muscle stem cells (MuSCs) are crucial to the repair and homeostasis of mature skeletal muscle. MuSC dysfunction and dysregulation of the myogenic program can contribute to the development of pathology ranging from cancers like rhabdomyosarcoma (RMS) or muscle degenerative diseases such as Duchenne muscular dystrophy (DMD). Both diseases exhibit dysregulation at nearly all steps of myogenesis. For instance, MuSC self-renewal processes are altered. In RMS, this leads to the creation of tumor propagating cells. In DMD, impaired asymmetric stem cell division creates a bias towards producing self-renewing stem cells instead of committing to differentiation. Hyperproliferation of these cells contribute to tumorigenesis in RMS and symmetric expansion of the self-renewing MuSC population in DMD. Both diseases also exhibit a repression of factors involved in terminal differentiation, halting RMS cells in the proliferative stage and thus driving tumor growth. Conversely, the MuSCs in DMD exhibit impaired differentiation and fuse prematurely, affecting myonuclei maturation and the integrity of the dystrophic muscle fiber. Finally, both disease states cause alterations to the MuSC niche. Various elements of the niche such as inflammatory and migratory signaling that impact MuSC behavior are dysregulated. Here we show how these seemingly distantly related diseases indeed have similarities in MuSC dysfunction, underlying the importance of considering MuSCs when studying the pathophysiology of muscle diseases.
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Affiliation(s)
- Rebecca Robertson
- Department of Biochemistry, Faculty of Medicine and Health Sciences, McGill University, Montréal, QC, Canada
| | - Shulei Li
- Department of Biochemistry, Faculty of Medicine and Health Sciences, McGill University, Montréal, QC, Canada; Rosalind and Morris Goodman Cancer Institute, McGill University, Montréal, QC, Canada
| | - Romina L Filippelli
- Department of Biochemistry, Faculty of Medicine and Health Sciences, McGill University, Montréal, QC, Canada
| | - Natasha C Chang
- Department of Biochemistry, Faculty of Medicine and Health Sciences, McGill University, Montréal, QC, Canada; Rosalind and Morris Goodman Cancer Institute, McGill University, Montréal, QC, Canada.
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He Y, Heng Y, Qin Z, Wei X, Wu Z, Qu J. Intravital microscopy of satellite cell dynamics and their interaction with myeloid cells during skeletal muscle regeneration. SCIENCE ADVANCES 2023; 9:eadi1891. [PMID: 37851799 PMCID: PMC10584350 DOI: 10.1126/sciadv.adi1891] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/16/2023] [Accepted: 09/15/2023] [Indexed: 10/20/2023]
Abstract
Skeletal muscle regeneration requires the highly coordinated cooperation of muscle satellite cells (MuSCs) with other cellular components. Upon injury, myeloid cells populate the wound site, concomitant with MuSC activation. However, detailed analysis of MuSC-myeloid cell interaction is hindered by the lack of suitable live animal imaging technology. Here, we developed a dual-laser multimodal nonlinear optical microscope platform to study the dynamics of MuSCs and their interaction with nonmyogenic cells during muscle regeneration. Using three-dimensional time-lapse imaging on live reporter mice and taking advantages of the autofluorescence of reduced nicotinamide adenine dinucleotide (NADH), we studied the spatiotemporal interaction between nonmyogenic cells and muscle stem/progenitor cells during MuSC activation and proliferation. We discovered that their cell-cell contact was transient in nature. Moreover, MuSCs could activate with notably reduced infiltration of neutrophils and macrophages, and their proliferation, although dependent on macrophages, did not require constant contact with them. These findings provide a fresh perspective on myeloid cells' role during muscle regeneration.
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Affiliation(s)
- Yingzhu He
- Department of Electronic and Computer Engineering, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, P. R. China
| | - Youshan Heng
- Division of Life Science, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, P. R. China
| | - Zhongya Qin
- Department of Electronic and Computer Engineering, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, P. R. China
| | - Xiuqing Wei
- Division of Life Science, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, P. R. China
| | - Zhenguo Wu
- Division of Life Science, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, P. R. China
| | - Jianan Qu
- Department of Electronic and Computer Engineering, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, P. R. China
- State Key Laboratory of Molecular Neuroscience, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, P. R. China
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Ashraf M, Tipparaju SM, Kim JW, Xuan W. Chemokine/ITGA4 Interaction Directs iPSC-Derived Myogenic Progenitor Migration to Injury Sites in Aging Muscle for Regeneration. Cells 2023; 12:1837. [PMID: 37508502 PMCID: PMC10378040 DOI: 10.3390/cells12141837] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2023] [Revised: 07/09/2023] [Accepted: 07/10/2023] [Indexed: 07/30/2023] Open
Abstract
The failure of muscle to repair after injury during aging may be a major contributor to muscle mass loss. We recently generated muscle progenitor cells (MPCs) from human-induced pluripotent stem-cell (iPSC) cell lines using small molecules, CHIR99021 and Givinostat (Givi-MPCs) sequentially. Here, we test whether the chemokines overexpressed in injured endothelial cells direct MPC migration to the site by binding to their receptor, ITGA4. ITGA4 was heavily expressed in Givi-MPCs. To study the effects on the mobilization of Givi-MPCs, ITGA4 was knocked down by an ITGA4 shRNA lentiviral vector. With and without ITGA4 knocked down, cell migration in vitro and cell mobilization in vivo using aged NOD scid gamma (NSG) mice and mdx/scid mice were analyzed. The migration of shITGA4-Givi-MPCs was significantly impaired, as shown in a wound-healing assay. The knockdown of ITGA4 impaired the migration of Givi-MPCs towards human aortic endothelial cells (HAECs), in which CX3CL1 and VCAM-1 were up-regulated by the treatment of TNF-α compared with scramble ones using a transwell system. MPCs expressing ITGA4 sensed chemokines secreted by endothelial cells at the injury site as a chemoattracting signal to migrate to the injured muscle. The mobilization of Givi-MPCs was mediated by the ligand-receptor interaction, which facilitated their engraftment for repairing the sarcopenic muscle with injury.
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Chen W, Perkins TJ, Rudnicki MA. Quantification of Muscle Satellite Stem Cell Divisions by High-Content Analysis. Methods Mol Biol 2023; 2587:537-553. [PMID: 36401049 DOI: 10.1007/978-1-0716-2772-3_29] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
High-content screening is commonly performed on 2D cultured cells, which is high throughput but has low biological relevance. In contrast, single myofiber culture assay preserves the satellite cell niche between the basal lamina and sarcolemma and consequently has high biological relevance but is low throughput. We describe here a high-content screening method that utilizes single myofiber culture that addresses the caveats of both techniques. Our method utilizes the transgenic reporter allele Myf5-Cre:R26R-eYFP to differentiate stem and committed cells within a dividing couplet that can be quantified by high-content throughput immunodetection and bioinformatic analysis.
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Affiliation(s)
- William Chen
- Sprott Center for Stem Cell Research, Regenerative Medicine Program, Ottawa Hospital Research Institute, Ottawa, ON, Canada
- Department of Cellular and Molecular Medicine, Faculty of Medicine, University of Ottawa, Ottawa, ON, Canada
| | - Theodore J Perkins
- Sprott Center for Stem Cell Research, Regenerative Medicine Program, Ottawa Hospital Research Institute, Ottawa, ON, Canada
- Department of Cellular and Molecular Medicine, Faculty of Medicine, University of Ottawa, Ottawa, ON, Canada
- Department of Biochemistry, Microbiology, and Immunology, Faculty of Medicine, University of Ottawa, Ottawa, ON, Canada
| | - Michael A Rudnicki
- Sprott Center for Stem Cell Research, Regenerative Medicine Program, Ottawa Hospital Research Institute, Ottawa, ON, Canada.
- Department of Cellular and Molecular Medicine, Faculty of Medicine, University of Ottawa, Ottawa, ON, Canada.
- Department of Medicine, Faculty of Medicine, University of Ottawa, Ottawa, ON, Canada.
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9
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Skeletal Muscle Stem Cells in Aging: Asymmetric/Symmetric Division Switching. Symmetry (Basel) 2022. [DOI: 10.3390/sym14122676] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
In aged muscle, satellite cells’ symmetric and asymmetric divisions are impaired, and intrinsic and extrinsic complex mechanisms govern these processes. This review presents many updated aspects regarding muscle stem cells’ fate in normal and aging conditions. The balance between self-renewal and commitment divisions contributes to muscle regeneration, muscle homeostasis, aging, and disease. Stimulating muscle regeneration in aging could be a therapeutic target, but there is still a need to understand the many mechanisms that influence each other in satellite cells and their niche. We highlight here the general outlines regarding satellite cell divisions, the primary markers present in muscle stem cells, the aging aspects concerning signaling pathways involved in symmetric/asymmetric divisions, the regenerative capacity of satellite cells and their niche alteration in senescent muscle, genetics and epigenetics mechanisms implied in satellite cells aging and exercise effect on muscle regeneration in the elderly.
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10
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Zhang Y, Zeuthen C, Zhu C, Wu F, Mezzell AT, Whitlow TJ, Choo HJ, Vest KE. Pharyngeal pathology in a mouse model of oculopharyngeal muscular dystrophy is associated with impaired basal autophagy in myoblasts. Front Cell Dev Biol 2022; 10:986930. [PMID: 36313551 PMCID: PMC9614327 DOI: 10.3389/fcell.2022.986930] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2022] [Accepted: 09/26/2022] [Indexed: 11/05/2023] Open
Abstract
Oculopharyngeal muscular dystrophy (OPMD) is a late-onset dominant disease that primarily affects craniofacial muscles. Despite the fact that the genetic cause of OPMD is known to be expansion mutations in the gene encoding the nuclear polyadenosine RNA binding protein PABPN1, the molecular mechanisms of pathology are unknown and no pharmacologic treatments are available. Due to the limited availability of patient tissues, several animal models have been employed to study the pathology of OPMD. However, none of these models have demonstrated functional deficits in the muscles of the pharynx, which are predominantly affected by OPMD. Here, we used a knock-in mouse model of OPMD, Pabpn1 +/A17 , that closely genocopies patients. In Pabpn1 +/A17 mice, we detected impaired pharyngeal muscle function, and impaired pharyngeal satellite cell proliferation and fusion. Molecular studies revealed that basal autophagy, which is required for normal satellite cell function, is higher in pharynx-derived myoblasts than in myoblasts derived from limb muscles. Interestingly, basal autophagy is impaired in cells derived from Pabpn1 +/A17 mice. Pabpn1 knockdown in pharyngeal myoblasts failed to recapitulate the autophagy defect detected in Pabpn1 +/A17 myoblasts suggesting that loss of PABPN1 function does not contribute to the basal autophagy defect. Taken together, these studies provide the first evidence for pharyngeal muscle and satellite cell pathology in a mouse model of OPMD and suggest that aberrant gain of PABPN1 function contributes to the craniofacial pathology in OPMD.
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Affiliation(s)
- Yu Zhang
- Department of Molecular Genetics, Biochemistry and Microbiology, University of Cincinnati College of Medicine, Cincinnati, OH, United States
| | - Christopher Zeuthen
- Department of Cell Biology, Emory University School of Medicine, Atlanta, GA, United States
| | - Carol Zhu
- Department of Cell Biology, Emory University School of Medicine, Atlanta, GA, United States
| | - Fang Wu
- Department of Cell Biology, Emory University School of Medicine, Atlanta, GA, United States
| | - Allison T. Mezzell
- Department of Molecular Genetics, Biochemistry and Microbiology, University of Cincinnati College of Medicine, Cincinnati, OH, United States
| | - Thomas J. Whitlow
- Department of Molecular Genetics, Biochemistry and Microbiology, University of Cincinnati College of Medicine, Cincinnati, OH, United States
| | - Hyojung J. Choo
- Department of Cell Biology, Emory University School of Medicine, Atlanta, GA, United States
| | - Katherine E. Vest
- Department of Molecular Genetics, Biochemistry and Microbiology, University of Cincinnati College of Medicine, Cincinnati, OH, United States
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11
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Barutcu AR, Elizalde G, Gonzalez AE, Soni K, Rinn JL, Wagers AJ, Almada AE. Prolonged FOS activity disrupts a global myogenic transcriptional program by altering 3D chromatin architecture in primary muscle progenitor cells. Skelet Muscle 2022; 12:20. [PMID: 35971133 PMCID: PMC9377060 DOI: 10.1186/s13395-022-00303-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2021] [Accepted: 08/04/2022] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND The AP-1 transcription factor, FBJ osteosarcoma oncogene (FOS), is induced in adult muscle satellite cells (SCs) within hours following muscle damage and is required for effective stem cell activation and muscle repair. However, why FOS is rapidly downregulated before SCs enter cell cycle as progenitor cells (i.e., transiently expressed) remains unclear. Further, whether boosting FOS levels in the proliferating progeny of SCs can enhance their myogenic properties needs further evaluation. METHODS We established an inducible, FOS expression system to evaluate the impact of persistent FOS activity in muscle progenitor cells ex vivo. We performed various assays to measure cellular proliferation and differentiation, as well as uncover changes in RNA levels and three-dimensional (3D) chromatin interactions. RESULTS Persistent FOS activity in primary muscle progenitor cells severely antagonizes their ability to differentiate and form myotubes within the first 2 weeks in culture. RNA-seq analysis revealed that ectopic FOS activity in muscle progenitor cells suppressed a global pro-myogenic transcriptional program, while activating a stress-induced, mitogen-activated protein kinase (MAPK) transcriptional signature. Additionally, we observed various FOS-dependent, chromosomal re-organization events in A/B compartments, topologically associated domains (TADs), and genomic loops near FOS-regulated genes. CONCLUSIONS Our results suggest that elevated FOS activity in recently activated muscle progenitor cells perturbs cellular differentiation by altering the 3D chromosome organization near critical pro-myogenic genes. This work highlights the crucial importance of tightly controlling FOS expression in the muscle lineage and suggests that in states of chronic stress or disease, persistent FOS activity in muscle precursor cells may disrupt the muscle-forming process.
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Affiliation(s)
- A Rasim Barutcu
- Department of Stem Cell and Regenerative Biology, Harvard University, Cambridge, MA, USA
- Present address: Donnelly Centre, University of Toronto, Toronto, ON, Canada
| | - Gabriel Elizalde
- Department of Orthopaedic Surgery, University of Southern California, Los Angeles, CA, USA
- Department of Stem Cell Biology and Regenerative Medicine, University of Southern California, Los Angeles, CA, USA
| | - Alfredo E Gonzalez
- Department of Stem Cell and Regenerative Biology, Harvard University, Cambridge, MA, USA
| | - Kartik Soni
- Department of Orthopaedic Surgery, University of Southern California, Los Angeles, CA, USA
- Department of Stem Cell Biology and Regenerative Medicine, University of Southern California, Los Angeles, CA, USA
| | - John L Rinn
- Department of Stem Cell and Regenerative Biology, Harvard University, Cambridge, MA, USA
- Present address: BioFrontiers and Department of Biochemistry, University of Colorado Boulder, Boulder, CO, 80303, USA
| | - Amy J Wagers
- Department of Stem Cell and Regenerative Biology, Harvard University, Cambridge, MA, USA
| | - Albert E Almada
- Department of Stem Cell and Regenerative Biology, Harvard University, Cambridge, MA, USA.
- Department of Orthopaedic Surgery, University of Southern California, Los Angeles, CA, USA.
- Department of Stem Cell Biology and Regenerative Medicine, University of Southern California, Los Angeles, CA, USA.
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12
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Sun C, Kannan S, Choi IY, Lim H, Zhang H, Chen GS, Zhang N, Park SH, Serra C, Iyer SR, Lloyd TE, Kwon C, Lovering RM, Lim SB, Andersen P, Wagner KR, Lee G. Human pluripotent stem cell-derived myogenic progenitors undergo maturation to quiescent satellite cells upon engraftment. Cell Stem Cell 2022; 29:610-619.e5. [PMID: 35395188 PMCID: PMC9000524 DOI: 10.1016/j.stem.2022.03.004] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Revised: 12/10/2021] [Accepted: 03/09/2022] [Indexed: 12/19/2022]
Abstract
Human pluripotent stem cell (hPSC)-derived myogenic progenitor cell (MPC) transplantation is a promising therapeutic approach for a variety of degenerative muscle disorders. Here, using an MPC-specific fluorescent reporter system (PAX7::GFP), we demonstrate that hPSC-derived MPCs can contribute to the regeneration of myofibers in mice following local injury and in mice deficient of dystrophin (mdx). We also demonstrate that a subset of PAX7::GFP MPCs engraft within the basal lamina of regenerated myofibers, adopt a quiescent state, and contribute to regeneration upon reinjury and in mdx mouse models. This subset of PAX7::GFP MPCs undergo a maturation process and remodel their molecular characteristics to resemble those of late-stage fetal MPCs/adult satellite cells following in vivo engraftment. These in-vivo-matured PAX7::GFP MPCs retain a cell-autonomous ability to regenerate and can repopulate in the niche of secondary recipient mice, providing a proof of principle for future hPSC-based cell therapy for muscle disorders.
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Affiliation(s)
- Congshan Sun
- Departments of Neurology and Neuroscience, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA; Center for Genetic Muscle Disorders, The Kennedy Krieger Institute, Baltimore, MD 21205, USA
| | - Suraj Kannan
- Institute for Cell Engineering, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA; Division of Cardiology, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA; Biomedical Engineering and Cell Biology, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA; Cellular and Molecular Medicine, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
| | - In Young Choi
- Departments of Neurology and Neuroscience, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA; Institute for Cell Engineering, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
| | - HoTae Lim
- Departments of Neurology and Neuroscience, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA; Institute for Cell Engineering, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
| | - Hao Zhang
- Department of Molecular Microbiology and Immunology, Bloomberg School of Public Health, Johns Hopkins University, Baltimore, MD 21205, USA
| | - Grace S Chen
- Krieger School of Arts and Sciences, Johns Hopkins University, Baltimore, MD 21218, USA
| | - Nancy Zhang
- Krieger School of Arts and Sciences, Johns Hopkins University, Baltimore, MD 21218, USA
| | - Seong-Hyun Park
- Departments of Neurology and Neuroscience, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA; Institute for Cell Engineering, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
| | - Carlo Serra
- Departments of Neurology and Neuroscience, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA; Center for Genetic Muscle Disorders, The Kennedy Krieger Institute, Baltimore, MD 21205, USA
| | - Shama R Iyer
- Department of Orthopaedics, University of Maryland School of Medicine, Baltimore, MD 21201, USA
| | - Thomas E Lloyd
- Departments of Neurology and Neuroscience, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
| | - Chulan Kwon
- Institute for Cell Engineering, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA; Division of Cardiology, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA; Biomedical Engineering and Cell Biology, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA; Cellular and Molecular Medicine, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
| | - Richard M Lovering
- Department of Orthopaedics, University of Maryland School of Medicine, Baltimore, MD 21201, USA
| | - Su Bin Lim
- Department of Biochemistry and Molecular Biology, Ajou University School of Medicine, Suwon, 16499, South Korea
| | - Peter Andersen
- Division of Cardiology, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
| | - Kathryn R Wagner
- Departments of Neurology and Neuroscience, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA; Center for Genetic Muscle Disorders, The Kennedy Krieger Institute, Baltimore, MD 21205, USA.
| | - Gabsang Lee
- Departments of Neurology and Neuroscience, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA; Institute for Cell Engineering, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA.
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13
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Rader EP, Naimo MA, Ensey J, Baker BA. Improved impedance to maladaptation and enhanced VCAM-1 upregulation with resistance-type training in the long-lived Snell dwarf ( Pit1dw/dw) mouse. Aging (Albany NY) 2022; 14:1157-1185. [PMID: 35113807 PMCID: PMC8876912 DOI: 10.18632/aging.203875] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2019] [Accepted: 01/27/2022] [Indexed: 06/14/2023]
Abstract
Snell dwarf mice with the Pit1dw/dw mutation are deficient in growth hormone, prolactin, and thyroid stimulating hormone and exhibit >40% lifespan extension. This longevity is accompanied by compromised muscular performance. However, research regarding young (3-month-old) Snell dwarf mice demonstrate exceptional responsivity to resistance-type training especially in terms of a shifted fiber type distribution and increased protein levels of vascular cell adhesion molecule-1 (VCAM-1), a possible mediator of such remodeling. In the present study, we investigated whether this responsiveness persists at 12 months of age. Unlike 12-month-old control mice, age-matched Snell dwarf mice remained resistant to training-induced maladaptive decreases in performance and muscle mass. This was accompanied by retainment of the remodeling capacity in muscles of Snell dwarf mice to increase VCAM-1 protein levels and a shift in myosin heavy chain (MHC) isoform distribution with training. Even decreasing training frequency for control mice, an alteration which protected muscles from maladaptation at 12 months of age, did not result in the overt remodeling observed for Snell dwarf mice. The results demonstrate a distinct remodeling response to resistance-type exercise operative in the context of the Pit1dw/dw mutation of long-lived Snell dwarf mice.
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Affiliation(s)
- Erik P. Rader
- Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health, Morgantown, WV 26505, USA
| | - Marshall A. Naimo
- Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health, Morgantown, WV 26505, USA
- West Virginia School of Medicine, Division of Exercise Physiology, Morgantown, WV 26506, USA
| | - James Ensey
- Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health, Morgantown, WV 26505, USA
| | - Brent A. Baker
- Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health, Morgantown, WV 26505, USA
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14
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Kann AP, Hung M, Krauss RS. Cell-cell contact and signaling in the muscle stem cell niche. Curr Opin Cell Biol 2021; 73:78-83. [PMID: 34352725 PMCID: PMC8678169 DOI: 10.1016/j.ceb.2021.06.003] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2021] [Accepted: 06/18/2021] [Indexed: 12/26/2022]
Abstract
Muscle stem cells (also called satellite cells or SCs) rely on their local niche for regulatory signals during homeostasis and regeneration. While a number of cell types communicate indirectly through secreted factors, here we focus on the significance of direct contact between SCs and their neighbors. During quiescence, SCs reside under a basal lamina and receive quiescence-promoting signals from their adjacent skeletal myofibers. Upon injury, the composition of the niche changes substantially, enabling the formation of new contacts that mediate proliferation, self-renewal, and differentiation. In this review, we summarize the latest work in understanding cell-cell contact within the satellite cell niche and highlight areas of open questions for future studies.
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Affiliation(s)
- Allison P Kann
- Department of Cell, Developmental, and Regenerative Biology, Icahn School of Medicine at Mount Sinai, New York, NY, 10029, USA
| | - Margaret Hung
- Department of Cell, Developmental, and Regenerative Biology, Icahn School of Medicine at Mount Sinai, New York, NY, 10029, USA
| | - Robert S Krauss
- Department of Cell, Developmental, and Regenerative Biology, Icahn School of Medicine at Mount Sinai, New York, NY, 10029, USA.
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15
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Taylor L, Wankell M, Saxena P, McFarlane C, Hebbard L. Cell adhesion an important determinant of myogenesis and satellite cell activity. BIOCHIMICA ET BIOPHYSICA ACTA-MOLECULAR CELL RESEARCH 2021; 1869:119170. [PMID: 34763027 DOI: 10.1016/j.bbamcr.2021.119170] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/05/2021] [Revised: 10/18/2021] [Accepted: 11/01/2021] [Indexed: 10/19/2022]
Abstract
Skeletal muscles represent a complex and highly organised tissue responsible for all voluntary body movements. Developed through an intricate and tightly controlled process known as myogenesis, muscles form early in development and are maintained throughout life. Due to the constant stresses that muscles are subjected to, skeletal muscles maintain a complex course of regeneration to both replace and repair damaged myofibers and to form new functional myofibers. This process, made possible by a pool of resident muscle stem cells, termed satellite cells, and controlled by an array of transcription factors, is additionally reliant on a diverse range of cell adhesion molecules and the numerous signaling cascades that they initiate. This article will review the literature surrounding adhesion molecules and their roles in skeletal muscle myogenesis and repair.
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Affiliation(s)
- Lauren Taylor
- Department of Molecular and Cell Biology, College of Public Health, Medical and Veterinary Sciences, Centre for Molecular Therapeutics, Centre for Tropical Bioinformatics and Molecular Biology, Australian Institute of Tropical Medicine and Health, James Cook University, Townsville, Queensland, Australia
| | - Miriam Wankell
- Department of Molecular and Cell Biology, College of Public Health, Medical and Veterinary Sciences, Centre for Molecular Therapeutics, Centre for Tropical Bioinformatics and Molecular Biology, Australian Institute of Tropical Medicine and Health, James Cook University, Townsville, Queensland, Australia
| | - Pankaj Saxena
- Department of Cardiothoracic Surgery, The Townsville University Hospital, Townsville, Queensland, Australia; College of Medicine, Dentistry, James Cook University, Townsville, Queensland, Australia
| | - Craig McFarlane
- Department of Molecular and Cell Biology, College of Public Health, Medical and Veterinary Sciences, Centre for Molecular Therapeutics, Centre for Tropical Bioinformatics and Molecular Biology, Australian Institute of Tropical Medicine and Health, James Cook University, Townsville, Queensland, Australia.
| | - Lionel Hebbard
- Department of Molecular and Cell Biology, College of Public Health, Medical and Veterinary Sciences, Centre for Molecular Therapeutics, Centre for Tropical Bioinformatics and Molecular Biology, Australian Institute of Tropical Medicine and Health, James Cook University, Townsville, Queensland, Australia; Storr Liver Centre, Westmead Institute for Medical Research, Westmead Hospital and University of Sydney, Sydney, New South Wales, Australia.
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16
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Scala P, Rehak L, Giudice V, Ciaglia E, Puca AA, Selleri C, Della Porta G, Maffulli N. Stem Cell and Macrophage Roles in Skeletal Muscle Regenerative Medicine. Int J Mol Sci 2021; 22:10867. [PMID: 34639203 PMCID: PMC8509639 DOI: 10.3390/ijms221910867] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2021] [Revised: 10/04/2021] [Accepted: 10/06/2021] [Indexed: 12/23/2022] Open
Abstract
In severe muscle injury, skeletal muscle tissue structure and functionality can be repaired through the involvement of several cell types, such as muscle stem cells, and innate immune responses. However, the exact mechanisms behind muscle tissue regeneration, homeostasis, and plasticity are still under investigation, and the discovery of pathways and cell types involved in muscle repair can open the way for novel therapeutic approaches, such as cell-based therapies involving stem cells and peripheral blood mononucleate cells. Indeed, peripheral cell infusions are a new therapy for muscle healing, likely because autologous peripheral blood infusion at the site of injury might enhance innate immune responses, especially those driven by macrophages. In this review, we summarize current knowledge on functions of stem cells and macrophages in skeletal muscle repairs and their roles as components of a promising cell-based therapies for muscle repair and regeneration.
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Affiliation(s)
- Pasqualina Scala
- Department of Medicine, Surgery and Dentistry, University of Salerno, Via S. Allende, 84081 Baronissi, Italy; (P.S.); (V.G.); (E.C.); (A.A.P.); (C.S.); (N.M.)
| | - Laura Rehak
- Athena Biomedical innovations, Viale Europa 139, 50126 Florence, Italy;
| | - Valentina Giudice
- Department of Medicine, Surgery and Dentistry, University of Salerno, Via S. Allende, 84081 Baronissi, Italy; (P.S.); (V.G.); (E.C.); (A.A.P.); (C.S.); (N.M.)
- Hematology and Transplant Center, University Hospital “San Giovanni di Dio e Ruggi D’Aragona”, Largo Città d’Ippocrate 1, 84131 Salerno, Italy
- Clinical Pharmacology, University Hospital “San Giovanni di Dio e Ruggi D’Aragona”, Largo Città d’Ippocrate 1, 84131 Salerno, Italy
| | - Elena Ciaglia
- Department of Medicine, Surgery and Dentistry, University of Salerno, Via S. Allende, 84081 Baronissi, Italy; (P.S.); (V.G.); (E.C.); (A.A.P.); (C.S.); (N.M.)
| | - Annibale Alessandro Puca
- Department of Medicine, Surgery and Dentistry, University of Salerno, Via S. Allende, 84081 Baronissi, Italy; (P.S.); (V.G.); (E.C.); (A.A.P.); (C.S.); (N.M.)
- Cardiovascular Research Unit, IRCCS MultiMedica, Via Milanese 300, 20138 Milan, Italy
| | - Carmine Selleri
- Department of Medicine, Surgery and Dentistry, University of Salerno, Via S. Allende, 84081 Baronissi, Italy; (P.S.); (V.G.); (E.C.); (A.A.P.); (C.S.); (N.M.)
- Hematology and Transplant Center, University Hospital “San Giovanni di Dio e Ruggi D’Aragona”, Largo Città d’Ippocrate 1, 84131 Salerno, Italy
| | - Giovanna Della Porta
- Department of Medicine, Surgery and Dentistry, University of Salerno, Via S. Allende, 84081 Baronissi, Italy; (P.S.); (V.G.); (E.C.); (A.A.P.); (C.S.); (N.M.)
- Interdepartment Centre BIONAM, University of Salerno, Via Giovanni Paolo I, 84084 Fisciano, Italy
| | - Nicola Maffulli
- Department of Medicine, Surgery and Dentistry, University of Salerno, Via S. Allende, 84081 Baronissi, Italy; (P.S.); (V.G.); (E.C.); (A.A.P.); (C.S.); (N.M.)
- Centre for Sports and Exercise Medicine, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, 275 Bancroft Road, London E1 4DG, UK
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17
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Aguiari P, Liu YY, Petrosyan A, Cheng SY, Brent GA, Perin L, Milanesi A. Persistent COUP-TFII expression underlies the myopathy and impaired muscle regeneration observed in resistance to thyroid hormone-alpha. Sci Rep 2021; 11:4601. [PMID: 33633251 PMCID: PMC7907286 DOI: 10.1038/s41598-021-84080-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2020] [Accepted: 02/09/2021] [Indexed: 12/01/2022] Open
Abstract
Thyroid hormone signaling plays an essential role in muscle development and function, in the maintenance of muscle mass, and in regeneration after injury, via activation of thyroid nuclear receptor alpha (THRA). A mouse model of resistance to thyroid hormone carrying a frame-shift mutation in the THRA gene (THRA-PV) is associated with accelerated skeletal muscle loss with aging and impaired regeneration after injury. The expression of nuclear orphan receptor chicken ovalbumin upstream promoter-factor II (COUP-TFII, or Nr2f2) persists during myogenic differentiation in THRA-PV myoblasts and skeletal muscle of aged THRA-PV mice and it is known to negatively regulate myogenesis. Here, we report that in murine myoblasts COUP-TFII interacts with THRA and modulates THRA binding to thyroid response elements (TREs). Silencing of COUP-TFII expression restores in vitro myogenic potential of THRA-PV myoblasts and shifts the mRNA expression profile closer to WT myoblasts. Moreover, COUP-TFII silencing reverses the transcriptomic profile of THRA-PV myoblasts and results in reactivation of pathways involved in muscle function and extracellular matrix remodeling/deposition. These findings indicate that the persistent COUP-TFII expression in THRA-PV mice is responsible for the abnormal muscle phenotype. In conclusion, COUP-TFII and THRA cooperate during post-natal myogenesis, and COUP-TFII is critical for the accelerated skeletal muscle loss with aging and impaired muscle regeneration after injury in THRA-PV mice.
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Affiliation(s)
- Paola Aguiari
- David Geffen School of Medicine at UCLA - VA Healthcare System, Los Angeles, CA, USA
| | - Yan-Yun Liu
- David Geffen School of Medicine at UCLA - VA Healthcare System, Los Angeles, CA, USA
| | - Astgik Petrosyan
- GOFARR Laboratory for Organ Regenerative Research and Cell Therapeutics in Urology, Children's Hospital Los Angeles, Los Angeles, CA, USA
| | | | - Gregory A Brent
- David Geffen School of Medicine at UCLA - VA Healthcare System, Los Angeles, CA, USA
| | - Laura Perin
- GOFARR Laboratory for Organ Regenerative Research and Cell Therapeutics in Urology, Children's Hospital Los Angeles, Los Angeles, CA, USA
| | - Anna Milanesi
- David Geffen School of Medicine at UCLA - VA Healthcare System, Los Angeles, CA, USA.
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18
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Mechanisms regulating myoblast fusion: A multilevel interplay. Semin Cell Dev Biol 2020; 104:81-92. [PMID: 32063453 DOI: 10.1016/j.semcdb.2020.02.004] [Citation(s) in RCA: 56] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2020] [Revised: 02/07/2020] [Accepted: 02/08/2020] [Indexed: 02/07/2023]
Abstract
Myoblast fusion into myotubes is one of the crucial steps of skeletal muscle development (myogenesis). The fusion is preceded by specification of a myogenic lineage (mesodermal progenitors) differentiating into myoblasts and is followed by myofiber-type specification and neuromuscular junction formation. Similarly to other processes of myogenesis, the fusion requires a very precise spatial and temporal regulation occuring both during embryonic development as well as regeneration and repair of the muscle. A plethora of genes and their products is involved in regulation of myoblast fusion and a precise multilevel interplay between them is crucial for myogenic cells to fuse. In this review, we describe both cellular events taking place during myoblast fusion (migration, adhesion, elongation, cell-cell recognition, alignment, and fusion of myoblast membranes enabling formation of myotubes) as well as recent findings on mechanisms regulating this process. Also, we present muscle disorders in humans that have been associated with defects in genes involved in regulation of myoblast fusion.
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19
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Boscolo Sesillo F, Wong M, Cortez A, Alperin M. Isolation of muscle stem cells from rat skeletal muscles. Stem Cell Res 2019; 43:101684. [PMID: 31931473 PMCID: PMC7357689 DOI: 10.1016/j.scr.2019.101684] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/31/2019] [Revised: 11/15/2019] [Accepted: 12/09/2019] [Indexed: 02/07/2023] Open
Abstract
Muscle stem cells (MuSCs) are involved in homeostatic maintenance of skeletal muscle and play a central role in muscle regeneration in response to injury. Thus, understanding MuSC autonomous properties is of fundamental importance for studies of muscle degenerative diseases and muscle plasticity. Rat, as an animal model, has been widely used in the skeletal muscle field, however rat MuSC isolation through fluorescence-activated cell sorting has never been described. This work validates a protocol for effective MuSC isolation from rat skeletal muscles. Tibialis anterior was harvested from female rats and digested for isolation of MuSCs. Three protocols, employing different cell surface markers (CD106, CD56, and CD29), were compared for their ability to isolate a highly enriched MuSC population. Cells isolated using only CD106 as a positive marker showed high expression of Pax7, ability to progress through myogenic lineage while in culture, and complete differentiation in serum-deprived conditions. The protocol was further validated in gastrocnemius, diaphragm, and the individual components of the pelvic floor muscle complex (coccygeus, iliocaudalis, and pubocaudalis), proving to be reproducible. CD106 is an efficient marker for reliable isolation of MuSCs from a variety of rat skeletal muscles.
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Affiliation(s)
- Francesca Boscolo Sesillo
- Department of Obstetrics, Gynecology, and Reproductive Sciences, Division of Female Pelvic Medicine and Reconstructive Surgery, University of California San Diego, La Jolla, CA 92093, USA
| | - Michelle Wong
- Department of Obstetrics, Gynecology, and Reproductive Sciences, Division of Female Pelvic Medicine and Reconstructive Surgery, University of California San Diego, La Jolla, CA 92093, USA
| | - Amy Cortez
- Flow Cytometry Core, Sanford Burnham Prebys Medical Discovery Institute, La Jolla, CA 92037, USA
| | - Marianna Alperin
- Department of Obstetrics, Gynecology, and Reproductive Sciences, Division of Female Pelvic Medicine and Reconstructive Surgery, University of California San Diego, La Jolla, CA 92093, USA.
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20
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Scully D, Sfyri P, Wilkinson HN, Acebes-Huerta A, Verpoorten S, Muñoz-Turrillas MC, Parnell A, Patel K, Hardman MJ, Gutiérrez L, Matsakas A. Optimising platelet secretomes to deliver robust tissue-specific regeneration. J Tissue Eng Regen Med 2019; 14:82-98. [PMID: 31603629 DOI: 10.1002/term.2965] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2019] [Revised: 09/04/2019] [Accepted: 09/09/2019] [Indexed: 12/19/2022]
Abstract
Promoting cell proliferation is the cornerstone of most tissue regeneration therapies. As platelet-based applications promote cell division and can be customised for tissue-specific efficacy, this makes them strong candidates for developing novel regenerative therapies. Therefore, the aim of this study was to determine if platelet releasate could be optimised to promote cellular proliferation and differentiation of specific tissues. Growth factors in platelet releasate were profiled for physiological and supraphysiological platelet concentrations. We analysed the effect of physiological and supraphysiological releasate on C2C12 skeletal myoblasts, H9C2 rat cardiomyocytes, human dermal fibroblasts (HDF), HaCaT keratinocytes, and chondrocytes. Cellular proliferation and differentiation were assessed through proliferation assays, mRNA, and protein expression. We show that supraphysiological releasate is not simply a concentrated version of physiological releasate. Physiological releasate promoted C2C12, HDF, and chondrocyte proliferation with no effect on H9C2 or HaCaT cells. Supraphysiological releasate induced stronger proliferation in C2C12 and HDF cells compared with physiological releasate. Importantly, supraphysiological releasate induced proliferation of H9C2 cells. The proliferative effects of skeletal and cardiac muscle cells were in part driven by vascular endothelial growth factor alpha. Furthermore, supraphysiological releasate induced differentiation of H9C2 and C2C12, HDF, and keratinocytes. This study provides insights into the ability of releasate to promote muscle, heart, skin, and cartilage cell proliferation and differentiation and highlights the importance of optimising releasate composition for tissue-specific regeneration.
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Affiliation(s)
- David Scully
- Molecular Physiology Laboratory, Centre for Atherothrombosis & Metabolic Disease, Hull York Medical School, University of Hull, Hull, UK
| | - Peggy Sfyri
- Molecular Physiology Laboratory, Centre for Atherothrombosis & Metabolic Disease, Hull York Medical School, University of Hull, Hull, UK
| | - Holly N Wilkinson
- Molecular Physiology Laboratory, Centre for Atherothrombosis & Metabolic Disease, Hull York Medical School, University of Hull, Hull, UK
| | - Andrea Acebes-Huerta
- Platelet Research Lab, Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), Oviedo, Spain
| | - Sandrine Verpoorten
- Molecular Physiology Laboratory, Centre for Atherothrombosis & Metabolic Disease, Hull York Medical School, University of Hull, Hull, UK
| | - María Carmen Muñoz-Turrillas
- Platelet Research Lab, Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), Oviedo, Spain.,Centro Comunitario de Sangre y Tejidos, de Asturias, Oviedo, Spain
| | - Andrew Parnell
- School of Biological Sciences, University of Reading, Reading, UK
| | - Ketan Patel
- School of Biological Sciences, University of Reading, Reading, UK
| | - Matthew J Hardman
- Molecular Physiology Laboratory, Centre for Atherothrombosis & Metabolic Disease, Hull York Medical School, University of Hull, Hull, UK
| | - Laura Gutiérrez
- Platelet Research Lab, Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), Oviedo, Spain.,Department of Medicine, University of Oviedo, Oviedo, Spain
| | - Antonios Matsakas
- Molecular Physiology Laboratory, Centre for Atherothrombosis & Metabolic Disease, Hull York Medical School, University of Hull, Hull, UK
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21
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Dissecting cell diversity and connectivity in skeletal muscle for myogenesis. Cell Death Dis 2019; 10:427. [PMID: 31160550 PMCID: PMC6546706 DOI: 10.1038/s41419-019-1647-5] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2018] [Revised: 03/25/2019] [Accepted: 05/06/2019] [Indexed: 12/28/2022]
Abstract
Characterized by their slow adhering property, skeletal muscle myogenic progenitor cells (MPCs) have been widely utilized in skeletal muscle tissue engineering for muscle regeneration, but with limited efficacy. Skeletal muscle regeneration is regulated by various cell types, including a large number of rapidly adhering cells (RACs) where their functions and mechanisms are still unclear. In this study, we explored the function of RACs by co-culturing them with MPCs in a biomimetic skeletal muscle organoid system. Results showed that RACs promoted the myogenic potential of MPCs in the organoid. Single-cell RNA-Seq was also performed, classifying RACs into 7 cell subtypes, including one newly described cell subtype: teno-muscular cells (TMCs). Connectivity map of RACs and MPCs subpopulations revealed potential growth factors (VEGFA and HBEGF) and extracellular matrix (ECM) proteins involvement in the promotion of myogenesis of MPCs during muscle organoid formation. Finally, trans-well experiments and small molecular inhibitors blocking experiments confirmed the role of RACs in the promotion of myogenic differentiation of MPCs. The RACs reported here revealed complex cell diversity and connectivity with MPCs in the biomimetic skeletal muscle organoid system, which not only offers an attractive alternative for disease modeling and in vitro drug screening but also provides clues for in vivo muscle regeneration.
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