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Majchrzak K, Hentschel E, Hönzke K, Geithe C, von Maltzahn J. We need to talk-how muscle stem cells communicate. Front Cell Dev Biol 2024; 12:1378548. [PMID: 39050890 PMCID: PMC11266305 DOI: 10.3389/fcell.2024.1378548] [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: 01/29/2024] [Accepted: 06/18/2024] [Indexed: 07/27/2024] Open
Abstract
Skeletal muscle is one of the tissues with the highest ability to regenerate, a finely controlled process which is critically depending on muscle stem cells. Muscle stem cell functionality depends on intrinsic signaling pathways and interaction with their immediate niche. Upon injury quiescent muscle stem cells get activated, proliferate and fuse to form new myofibers, a process involving the interaction of multiple cell types in regenerating skeletal muscle. Receptors in muscle stem cells receive the respective signals through direct cell-cell interaction, signaling via secreted factors or cell-matrix interactions thereby regulating responses of muscle stem cells to external stimuli. Here, we discuss how muscle stem cells interact with their immediate niche focusing on how this controls their quiescence, activation and self-renewal and how these processes are altered in age and disease.
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Affiliation(s)
- Karolina Majchrzak
- Faculty of Health Sciences Brandenburg, Brandenburg University of Technology Cottbus–Senftenberg, Senftenberg, Germany
| | - Erik Hentschel
- Faculty of Health Sciences Brandenburg, Brandenburg University of Technology Cottbus–Senftenberg, Senftenberg, Germany
| | - Katja Hönzke
- Faculty of Health Sciences Brandenburg, Brandenburg University of Technology Cottbus–Senftenberg, Senftenberg, Germany
- Department of Infectious Diseases and Respiratory Medicine, Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt Universität zu Berlin, Berlin, Germany
| | - Christiane Geithe
- Faculty of Health Sciences Brandenburg, Brandenburg University of Technology Cottbus–Senftenberg, Senftenberg, Germany
| | - Julia von Maltzahn
- Faculty of Health Sciences Brandenburg, Brandenburg University of Technology Cottbus–Senftenberg, Senftenberg, Germany
- Leibniz Institute on Aging, Fritz Lipmann Institute, Jena, Germany
- Faculty for Environment and Natural Sciences, Brandenburg University of Technology Cottbus—Senftenberg, Senftenberg, Germany
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2
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Hu L, Chen W, Qian A, Li YP. Wnt/β-catenin signaling components and mechanisms in bone formation, homeostasis, and disease. Bone Res 2024; 12:39. [PMID: 38987555 PMCID: PMC11237130 DOI: 10.1038/s41413-024-00342-8] [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: 12/10/2023] [Revised: 04/27/2024] [Accepted: 05/12/2024] [Indexed: 07/12/2024] Open
Abstract
Wnts are secreted, lipid-modified proteins that bind to different receptors on the cell surface to activate canonical or non-canonical Wnt signaling pathways, which control various biological processes throughout embryonic development and adult life. Aberrant Wnt signaling pathway underlies a wide range of human disease pathogeneses. In this review, we provide an update of Wnt/β-catenin signaling components and mechanisms in bone formation, homeostasis, and diseases. The Wnt proteins, receptors, activators, inhibitors, and the crosstalk of Wnt signaling pathways with other signaling pathways are summarized and discussed. We mainly review Wnt signaling functions in bone formation, homeostasis, and related diseases, and summarize mouse models carrying genetic modifications of Wnt signaling components. Moreover, the therapeutic strategies for treating bone diseases by targeting Wnt signaling, including the extracellular molecules, cytosol components, and nuclear components of Wnt signaling are reviewed. In summary, this paper reviews our current understanding of the mechanisms by which Wnt signaling regulates bone formation, homeostasis, and the efforts targeting Wnt signaling for treating bone diseases. Finally, the paper evaluates the important questions in Wnt signaling to be further explored based on the progress of new biological analytical technologies.
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Affiliation(s)
- Lifang Hu
- Laboratory for Bone Metabolism, Xi'an Key Laboratory of Special Medicine and Health Engineering, Key Laboratory for Space Biosciences and Biotechnology, Research Center for Special Medicine and Health Systems Engineering, School of Life Sciences, Northwestern Polytechnical University, Xi'an, Shaanxi, 710072, China
| | - Wei Chen
- Division in Cellular and Molecular Medicine, Department of Pathology and Laboratory Medicine, Tulane University School of Medicine, Tulane University, New Orleans, LA, 70112, USA
| | - Airong Qian
- Laboratory for Bone Metabolism, Xi'an Key Laboratory of Special Medicine and Health Engineering, Key Laboratory for Space Biosciences and Biotechnology, Research Center for Special Medicine and Health Systems Engineering, School of Life Sciences, Northwestern Polytechnical University, Xi'an, Shaanxi, 710072, China.
| | - Yi-Ping Li
- Division in Cellular and Molecular Medicine, Department of Pathology and Laboratory Medicine, Tulane University School of Medicine, Tulane University, New Orleans, LA, 70112, USA.
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3
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Espino-Gonzalez E, Dalbram E, Mounier R, Gondin J, Farup J, Jessen N, Treebak JT. Impaired skeletal muscle regeneration in diabetes: From cellular and molecular mechanisms to novel treatments. Cell Metab 2024; 36:1204-1236. [PMID: 38490209 DOI: 10.1016/j.cmet.2024.02.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/07/2023] [Revised: 01/10/2024] [Accepted: 02/22/2024] [Indexed: 03/17/2024]
Abstract
Diabetes represents a major public health concern with a considerable impact on human life and healthcare expenditures. It is now well established that diabetes is characterized by a severe skeletal muscle pathology that limits functional capacity and quality of life. Increasing evidence indicates that diabetes is also one of the most prevalent disorders characterized by impaired skeletal muscle regeneration, yet underlying mechanisms and therapeutic treatments remain poorly established. In this review, we describe the cellular and molecular alterations currently known to occur during skeletal muscle regeneration in people with diabetes and animal models of diabetes, including its associated comorbidities, e.g., obesity, hyperinsulinemia, and insulin resistance. We describe the role of myogenic and non-myogenic cell types on muscle regeneration in conditions with or without diabetes. Therapies for skeletal muscle regeneration and gaps in our knowledge are also discussed, while proposing future directions for the field.
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Affiliation(s)
- Ever Espino-Gonzalez
- Novo Nordisk Foundation Center for Basic Metabolic Research, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen 2200, Denmark
| | - Emilie Dalbram
- Novo Nordisk Foundation Center for Basic Metabolic Research, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen 2200, Denmark
| | - Rémi Mounier
- Institut NeuroMyoGène, Unité Physiopathologie et Génétique du Neurone et du Muscle, Université Claude Bernard Lyon 1, CNRS UMR 5261, Inserm U1315, Univ Lyon, Lyon, France
| | - Julien Gondin
- Institut NeuroMyoGène, Unité Physiopathologie et Génétique du Neurone et du Muscle, Université Claude Bernard Lyon 1, CNRS UMR 5261, Inserm U1315, Univ Lyon, Lyon, France
| | - Jean Farup
- Department of Biomedicine, Aarhus University, Aarhus 8000, Denmark; Steno Diabetes Center Aarhus, Aarhus University Hospital, Aarhus 8200, Denmark
| | - Niels Jessen
- Department of Biomedicine, Aarhus University, Aarhus 8000, Denmark; Steno Diabetes Center Aarhus, Aarhus University Hospital, Aarhus 8200, Denmark; Department of Clinical Pharmacology, Aarhus University Hospital, Aarhus 8200, Denmark
| | - Jonas T Treebak
- Novo Nordisk Foundation Center for Basic Metabolic Research, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen 2200, Denmark.
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4
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Tan L, Yan M, Su Z, Wang H, Li H, Zhao X, Liu S, Zhang L, Sun Q, Lu D. R-spondin-1 induces Axin degradation via the LRP6-CK1ε axis. Cell Commun Signal 2024; 22:14. [PMID: 38183076 PMCID: PMC10768284 DOI: 10.1186/s12964-023-01456-y] [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] [Received: 08/09/2023] [Accepted: 12/21/2023] [Indexed: 01/07/2024] Open
Abstract
R-spondins (RSPOs) are secreted signaling molecules that potentiate the Wnt/β-catenin pathway by cooperating with Wnt ligands. RSPO1 is crucial in tissue development and tissue homeostasis. However, the molecular mechanism by which RSPOs activate Wnt/β-catenin signaling remains elusive. In this study, we found that RSPOs could mediate the degradation of Axin through the ubiquitin-proteasome pathway. The results of Co-IP showed that the recombinant RSPO1 protein promoted the interaction between Axin1 and CK1ε. Either knockout of the CK1ε gene or treatment with the CK1δ/CK1ε inhibitor SR3029 caused an increase in Axin1 protein levels and attenuated RSPO1-induced degradation of the Axin1 protein. Moreover, we observed an increase in the number of associations of LRP6 with CK1ε and Axin1 following RSPO1 stimulation. Overexpression of LRP6 further potentiated Axin1 degradation mediated by RSPO1 or CK1ε. In addition, recombinant RSPO1 and Wnt3A proteins synergistically downregulated the protein expression of Axin1 and enhanced the transcriptional activity of the SuperTOPFlash reporter. Taken together, these results uncover the novel mechanism by which RSPOs activate Wnt/β-catenin signaling through LRP6/CK1ε-mediated degradation of Axin.
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Affiliation(s)
- Lifeng Tan
- Guangdong Provincial Key Laboratory of Regional Immunity and Disease, International Cancer Center, Marshall Laboratory of Biomedical Engineering, Department of Pharmacology, Shenzhen University Medical School, Shenzhen University, Shenzhen, 518055, Guangdong, China
| | - Mengfang Yan
- Guangdong Provincial Key Laboratory of Regional Immunity and Disease, International Cancer Center, Marshall Laboratory of Biomedical Engineering, Department of Pharmacology, Shenzhen University Medical School, Shenzhen University, Shenzhen, 518055, Guangdong, China
| | - Zijie Su
- Guangdong Provincial Key Laboratory of Regional Immunity and Disease, International Cancer Center, Marshall Laboratory of Biomedical Engineering, Department of Pharmacology, Shenzhen University Medical School, Shenzhen University, Shenzhen, 518055, Guangdong, China
- Department of Research, The Affiliated Tumor Hospital of Guangxi Medical University, Nanning, 530021, China
| | - Hanbin Wang
- Guangdong Provincial Key Laboratory of Regional Immunity and Disease, International Cancer Center, Marshall Laboratory of Biomedical Engineering, Department of Pharmacology, Shenzhen University Medical School, Shenzhen University, Shenzhen, 518055, Guangdong, China
| | - Huan Li
- Guangdong Provincial Key Laboratory of Regional Immunity and Disease, International Cancer Center, Marshall Laboratory of Biomedical Engineering, Department of Pharmacology, Shenzhen University Medical School, Shenzhen University, Shenzhen, 518055, Guangdong, China
| | - Xibao Zhao
- Guangdong Provincial Key Laboratory of Regional Immunity and Disease, International Cancer Center, Marshall Laboratory of Biomedical Engineering, Department of Pharmacology, Shenzhen University Medical School, Shenzhen University, Shenzhen, 518055, Guangdong, China
| | - Shanshan Liu
- Guangdong Provincial Key Laboratory of Regional Immunity and Disease, International Cancer Center, Marshall Laboratory of Biomedical Engineering, Department of Pharmacology, Shenzhen University Medical School, Shenzhen University, Shenzhen, 518055, Guangdong, China
| | - Long Zhang
- MOE Laboratory of Biosystems Homeostasis & Protection and Innovation Center for Cell Signaling Network, Life Sciences Institute, Zhejiang University, Hangzhou, 310058, China
| | - Qi Sun
- Guangdong Provincial Key Laboratory of Regional Immunity and Disease, International Cancer Center, Marshall Laboratory of Biomedical Engineering, Department of Pharmacology, Shenzhen University Medical School, Shenzhen University, Shenzhen, 518055, Guangdong, China.
| | - Desheng Lu
- Guangdong Provincial Key Laboratory of Regional Immunity and Disease, International Cancer Center, Marshall Laboratory of Biomedical Engineering, Department of Pharmacology, Shenzhen University Medical School, Shenzhen University, Shenzhen, 518055, Guangdong, China.
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5
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Chen Y, Lu Z, Feng J, Chen Z, Liu Z, Wang X, Yan H, Gao C. Novel recombinant R-spondin1 promotes hair regeneration by targeting the Wnt/β-catenin signaling pathway. Acta Biochim Biophys Sin (Shanghai) 2023; 55:1213-1221. [PMID: 37475547 PMCID: PMC10448039 DOI: 10.3724/abbs.2023112] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2022] [Accepted: 02/10/2023] [Indexed: 07/22/2023] Open
Abstract
Roof plate-specific spondin 1 (R-spondin1, RSPO1) is a Wnt/β-catenin signaling pathway activator that binds with Wnt ligands to stimulate the Wnt/β-catenin signaling pathway, which is key to hair regeneration. However, it is not clear whether recombinant RSPO1 (rRSPO1) affects hair regeneration. Here, we treat C57BL/6 male mice with rRSPO1 and investigate the expression of the Wnt/β-catenin signaling pathway and the activation of hair follicle stem cells in the dorsal skin. The mouse skin color score and hair-covered area are determined to describe hair growth, and the skin samples are subjected to H&E staining, western blot analysis and immunofluorescence staining to evaluate hair follicle development and the expressions of Wnt/β-catenin signaling pathway-related proteins. We find that rRSPO1 activates mouse hair follicle stem cells (mHFSCs) and accelerates hair regeneration. rRSPO1 increases the hair-covered area, the number of hair follicles, and the hair follicle diameter and length. Moreover, rRSPO1 enhances the activity of Wnt/β-catenin signaling pathway-related proteins and the expressions of HFSC markers, as well as mHFSC viability. These results indicate that subcutaneous injection of rRSPO1 can improve hair follicle development by activating the Wnt/β-catenin signaling pathway, thereby promoting hair regeneration. This study demonstrates that rRSPO1 has the potential to treat hair loss by activating the Wnt/β-catenin signaling pathway.
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Affiliation(s)
- Yijun Chen
- />College of Animal ScienceSouth China Agricultural University/Guangdong Provincial Key Laboratory of Animal Nutrition Control/State Key Laboratory of Swine and Poultry Breeding IndustryGuangzhou510642China
| | - Zhujin Lu
- />College of Animal ScienceSouth China Agricultural University/Guangdong Provincial Key Laboratory of Animal Nutrition Control/State Key Laboratory of Swine and Poultry Breeding IndustryGuangzhou510642China
| | - Jiaxin Feng
- />College of Animal ScienceSouth China Agricultural University/Guangdong Provincial Key Laboratory of Animal Nutrition Control/State Key Laboratory of Swine and Poultry Breeding IndustryGuangzhou510642China
| | - Zefeng Chen
- />College of Animal ScienceSouth China Agricultural University/Guangdong Provincial Key Laboratory of Animal Nutrition Control/State Key Laboratory of Swine and Poultry Breeding IndustryGuangzhou510642China
| | - Zejian Liu
- />College of Animal ScienceSouth China Agricultural University/Guangdong Provincial Key Laboratory of Animal Nutrition Control/State Key Laboratory of Swine and Poultry Breeding IndustryGuangzhou510642China
| | - Xiuqi Wang
- />College of Animal ScienceSouth China Agricultural University/Guangdong Provincial Key Laboratory of Animal Nutrition Control/State Key Laboratory of Swine and Poultry Breeding IndustryGuangzhou510642China
| | - Huichao Yan
- />College of Animal ScienceSouth China Agricultural University/Guangdong Provincial Key Laboratory of Animal Nutrition Control/State Key Laboratory of Swine and Poultry Breeding IndustryGuangzhou510642China
| | - Chunqi Gao
- />College of Animal ScienceSouth China Agricultural University/Guangdong Provincial Key Laboratory of Animal Nutrition Control/State Key Laboratory of Swine and Poultry Breeding IndustryGuangzhou510642China
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6
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Yang BA, Larouche JA, Sabin KM, Fraczek PM, Parker SCJ, Aguilar CA. Three-dimensional chromatin re-organization during muscle stem cell aging. Aging Cell 2023; 22:e13789. [PMID: 36727578 PMCID: PMC10086523 DOI: 10.1111/acel.13789] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2022] [Revised: 12/29/2022] [Accepted: 01/11/2023] [Indexed: 02/03/2023] Open
Abstract
Age-related skeletal muscle atrophy or sarcopenia is a significant societal problem that is becoming amplified as the world's population continues to increase. The regeneration of damaged skeletal muscle is mediated by muscle stem cells, but in old age muscle stem cells become functionally attenuated. The molecular mechanisms that govern muscle stem cell aging encompass changes across multiple regulatory layers and are integrated by the three-dimensional organization of the genome. To quantitatively understand how hierarchical chromatin architecture changes during muscle stem cell aging, we generated 3D chromatin conformation maps (Hi-C) and integrated these datasets with multi-omic (chromatin accessibility and transcriptome) profiles from bulk populations and single cells. We observed that muscle stem cells display static behavior at global scales of chromatin organization during aging and extensive rewiring of local contacts at finer scales that were associated with variations in transcription factor binding and aberrant gene expression. These data provide insights into genome topology as a regulator of molecular function in stem cell aging.
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Affiliation(s)
- Benjamin A Yang
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, Michigan, USA.,Biointerfaces Institute, University of Michigan, Ann Arbor, Michigan, USA
| | - Jacqueline A Larouche
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, Michigan, USA.,Biointerfaces Institute, University of Michigan, Ann Arbor, Michigan, USA
| | - Kaitlyn M Sabin
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, Michigan, USA.,Biointerfaces Institute, University of Michigan, Ann Arbor, Michigan, USA
| | - Paula M Fraczek
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, Michigan, USA.,Biointerfaces Institute, University of Michigan, Ann Arbor, Michigan, USA
| | - Stephen C J Parker
- Program in Cellular and Molecular Biology, University of Michigan, Ann Arbor, Michigan, USA.,Department of Computational Medicine & Bioinformatics, University of Michigan, Ann Arbor, Michigan, USA.,Department of Human Genetics, University of Michigan, Ann Arbor, Michigan, USA
| | - Carlos A Aguilar
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, Michigan, USA.,Biointerfaces Institute, University of Michigan, Ann Arbor, Michigan, USA.,Program in Cellular and Molecular Biology, University of Michigan, Ann Arbor, Michigan, USA
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7
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McCourt JL, Stearns-Reider KM, Mamsa H, Kannan P, Afsharinia MH, Shu C, Gibbs EM, Shin KM, Kurmangaliyev YZ, Schmitt LR, Hansen KC, Crosbie RH. Multi-omics analysis of sarcospan overexpression in mdx skeletal muscle reveals compensatory remodeling of cytoskeleton-matrix interactions that promote mechanotransduction pathways. Skelet Muscle 2023; 13:1. [PMID: 36609344 PMCID: PMC9817407 DOI: 10.1186/s13395-022-00311-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2022] [Accepted: 12/06/2022] [Indexed: 01/09/2023] Open
Abstract
BACKGROUND The dystrophin-glycoprotein complex (DGC) is a critical adhesion complex of the muscle cell membrane, providing a mechanical link between the extracellular matrix (ECM) and the cortical cytoskeleton that stabilizes the sarcolemma during repeated muscle contractions. One integral component of the DGC is the transmembrane protein, sarcospan (SSPN). Overexpression of SSPN in the skeletal muscle of mdx mice (murine model of DMD) restores muscle fiber attachment to the ECM in part through an associated increase in utrophin and integrin adhesion complexes at the cell membrane, protecting the muscle from contraction-induced injury. In this study, we utilized transcriptomic and ECM protein-optimized proteomics data sets from wild-type, mdx, and mdx transgenic (mdxTG) skeletal muscle tissues to identify pathways and proteins driving the compensatory action of SSPN overexpression. METHODS The tibialis anterior and quadriceps muscles were isolated from wild-type, mdx, and mdxTG mice and subjected to bulk RNA-Seq and global proteomics analysis using methods to enhance capture of ECM proteins. Data sets were further analyzed through the ingenuity pathway analysis (QIAGEN) and integrative gene set enrichment to identify candidate networks, signaling pathways, and upstream regulators. RESULTS Through our multi-omics approach, we identified 3 classes of differentially expressed genes and proteins in mdxTG muscle, including those that were (1) unrestored (significantly different from wild type, but not from mdx), (2) restored (significantly different from mdx, but not from wild type), and (3) compensatory (significantly different from both wild type and mdx). We identified signaling pathways that may contribute to the rescue phenotype, most notably cytoskeleton and ECM organization pathways. ECM-optimized proteomics revealed an increased abundance of collagens II, V, and XI, along with β-spectrin in mdxTG samples. Using ingenuity pathway analysis, we identified upstream regulators that are computationally predicted to drive compensatory changes, revealing a possible mechanism of SSPN rescue through a rewiring of cell-ECM bidirectional communication. We found that SSPN overexpression results in upregulation of key signaling molecules associated with regulation of cytoskeleton organization and mechanotransduction, including Yap1, Sox9, Rho, RAC, and Wnt. CONCLUSIONS Our findings indicate that SSPN overexpression rescues dystrophin deficiency partially through mechanotransduction signaling cascades mediated through components of the ECM and the cortical cytoskeleton.
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Affiliation(s)
- Jackie L. McCourt
- grid.19006.3e0000 0000 9632 6718Department of Integrative Biology and Physiology, University of California, Los Angeles, CA 90095 USA
| | - Kristen M. Stearns-Reider
- grid.19006.3e0000 0000 9632 6718Department of Integrative Biology and Physiology, University of California, Los Angeles, CA 90095 USA ,grid.19006.3e0000 0000 9632 6718Department of Orthopedic Surgery, David Geffen School of Medicine, University of California, Los Angeles, CA USA
| | - Hafsa Mamsa
- grid.19006.3e0000 0000 9632 6718Department of Integrative Biology and Physiology, University of California, Los Angeles, CA 90095 USA
| | - Pranav Kannan
- grid.19006.3e0000 0000 9632 6718Department of Integrative Biology and Physiology, University of California, Los Angeles, CA 90095 USA
| | - Mohammad Hossein Afsharinia
- grid.19006.3e0000 0000 9632 6718Department of Integrative Biology and Physiology, University of California, Los Angeles, CA 90095 USA
| | - Cynthia Shu
- grid.19006.3e0000 0000 9632 6718Department of Integrative Biology and Physiology, University of California, Los Angeles, CA 90095 USA
| | - Elizabeth M. Gibbs
- grid.19006.3e0000 0000 9632 6718Department of Integrative Biology and Physiology, University of California, Los Angeles, CA 90095 USA
| | - Kara M. Shin
- grid.19006.3e0000 0000 9632 6718Department of Integrative Biology and Physiology, University of California, Los Angeles, CA 90095 USA
| | - Yerbol Z. Kurmangaliyev
- grid.19006.3e0000 0000 9632 6718Department of Biological Chemistry, Howard Hughes Medical Institute, David Geffen School of Medicine, University of California, Los Angeles, CA USA
| | - Lauren R. Schmitt
- grid.241116.10000000107903411Department of Biochemistry and Molecular Genetics, University of Colorado, Denver, CO USA
| | - Kirk C. Hansen
- grid.241116.10000000107903411Department of Biochemistry and Molecular Genetics, University of Colorado, Denver, CO USA
| | - Rachelle H. Crosbie
- grid.19006.3e0000 0000 9632 6718Department of Integrative Biology and Physiology, University of California, Los Angeles, CA 90095 USA ,grid.19006.3e0000 0000 9632 6718Department of Neurology, David Geffen School of Medicine, University of California, Los Angeles, CA USA ,grid.19006.3e0000 0000 9632 6718Molecular Biology Institute, University of California, Los Angeles, CA USA ,grid.19006.3e0000 0000 9632 6718Broad Stem Cell Research Center, University of California, Los Angeles, CA USA
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Zeng SQ, Liu CL, Huang CN, Si WJ, Liu CB, Ren LX, Zhang WY, He YM, Yuan Y, Zhang HY, Han YG, Na RS, E GX, Huang YF. Identification of the Differential Expression Profile of miRNAs in Longissimus dorsi Muscle of Dazu Black Goat. RUSS J GENET+ 2022. [DOI: 10.1134/s102279542211014x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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RSPO3 is a novel contraction-inducible factor identified in an "in vitro exercise model" using primary human myotubes. Sci Rep 2022; 12:14291. [PMID: 35995979 PMCID: PMC9395423 DOI: 10.1038/s41598-022-18190-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2022] [Accepted: 08/08/2022] [Indexed: 11/30/2022] Open
Abstract
The physiological significance of skeletal muscle as a secretory organ is now well known but we can only speculate as to the existence of as-yet-unidentified myokines, especially those upregulated in response to muscle contractile activity. We first attempted to establish an “insert-chamber based in vitro exercise model” allowing the miniature but high cell-density culture state enabling highly developed contractile human myotubes to be readily obtained by applying electric pulse stimulation (EPS). By employing this in vitro exercise model, we identified R-spondin 3 (RSPO3) as a novel contraction-inducible myokine produced by cultured human myotubes. Contraction-dependent muscular RSPO3 mRNA upregulation was confirmed in skeletal muscles of mice subjected to sciatic nerve mediated in situ contraction as well as those of mice after 2 h of running. Pharmacological in vitro experiments demonstrated a relatively high concentration of metformin (millimolar range) to suppress the contraction-inducible mRNA upregulation of human myokines including RSPO3, interleukin (IL)-6, IL-8 and CXCL1. Our data also suggest human RSPO3 to be a paracrine factor that may positively participate in the myogenesis processes of myoblasts and satellite cells. Thus, the “insert chamber-based in vitro exercise model” is a potentially valuable research tool for investigating contraction-inducible biological responses of human myotubes usually exhibiting poorer contractility development even in the setting of EPS treatment.
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10
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R-spondin3 is a myokine that differentiates myoblasts to type I fibres. Sci Rep 2022; 12:13020. [PMID: 35906363 PMCID: PMC9338073 DOI: 10.1038/s41598-022-16640-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2022] [Accepted: 07/13/2022] [Indexed: 12/03/2022] Open
Abstract
Muscle fibres are broadly categorised into types I and II; the fibre-type ratio determines the contractile and metabolic properties of skeletal muscle tissue. The maintenance of type I fibres is essential for the prevention of obesity and the treatment of muscle atrophy caused by type 2 diabetes or unloading. Some reports suggest that myokines are related to muscle fibre type determination. We thus explored whether a myokine determines whether satellite cells differentiate to type I fibres. By examining the fibre types separately, we identified R-spondin 3 (Rspo3) as a myokine of interest, a secreted protein known as an activator of Wnt signalling pathways. To examine whether Rspo3 induces type I fibres, primary myoblasts prepared from mouse soleus muscles were exposed to a differentiation medium containing the mouse recombinant Rspo3 protein. Expression of myosin heavy chain (MyHC) I, a marker of type I fibre, significantly increased in the differentiated myotubes compared with a control. The Wnt/β-catenin pathway was shown to be the dominant signalling pathway which induces Rspo3-induced MyHC I expression. These results revealed Rspo3 as a myokine that determines whether satellite cells differentiate to type I fibres.
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11
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Involvement of DPY19L3 in Myogenic Differentiation of C2C12 Myoblasts. Molecules 2021; 26:molecules26185685. [PMID: 34577156 PMCID: PMC8467457 DOI: 10.3390/molecules26185685] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2021] [Revised: 09/14/2021] [Accepted: 09/16/2021] [Indexed: 11/16/2022] Open
Abstract
DPY19L3 has been identified as a C-mannosyltransferase for thrombospondin type-1 repeat domain-containing proteins. In this study, we focused on the role of DPY19L3 in the myogenic differentiation of C2C12 mouse myoblast cells. We carried out DPY19L3 gene depletion using the CRISPR/Cas9 system. The result showed that these DPY19L3-knockout cells could not be induced for differentiation. Moreover, the phosphorylation levels of MEK/ERK and p70S6K were suppressed in the DPY19L3-knockout cells compared with that of parent cells, suggesting that the protein(s) that is(are) DPY19L3-mediated C-mannosylated and regulate(s) MEK/ERK or p70S6K signaling is(are) required for the differentiation.
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12
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Dact1 is expressed during chicken and mouse skeletal myogenesis and modulated in human muscle diseases. Comp Biochem Physiol B Biochem Mol Biol 2021; 256:110645. [PMID: 34252542 DOI: 10.1016/j.cbpb.2021.110645] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2021] [Revised: 06/02/2021] [Accepted: 07/06/2021] [Indexed: 12/23/2022]
Abstract
Vertebrate skeletal muscle development and repair relies on the precise control of Wnt signaling. Dact1 (Dapper/Frodo) is an important modulator of Wnt signaling, interacting with key components of the various Wnt transduction pathways. Here, we characterized Dact1 mRNA and protein expression in chicken and mouse fetal muscles in vivo and during the differentiation of chick primary and mouse C2C12 myoblasts in vitro. We also performed in silico analysis to investigate Dact1 gene expression in human myopathies, and evaluated the Dact1 protein structure to seek an explanation for the accumulation of Dact1 protein aggregates in the nuclei of myogenic cells. Our results show for the first time that in both chicken and mouse, Dact1 is expressed during myogenesis, with a strong upregulation as cells engage in terminal differentiation, cell cycle withdrawal and cell fusion. In humans, Dact1 expression was found to be altered in specific muscle pathologies, including muscular dystrophies. Our bioinformatic analyses of Dact1 proteins revealed long intrinsically disordered regions, which may underpin the ability of Dact1 to interact with its many partners in the various Wnt pathways. In addition, we found that Dact1 has strong propensity for liquid-liquid phase separation, a feature that explains its ability to form nuclear aggregates and points to a possible role as a molecular 'on'-'off' switch. Taken together, our data suggest Dact1 as a candidate, multi-faceted regulator of amniote myogenesis with a possible pathophysiological role in human muscular diseases.
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13
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Myofiber stretch induces tensile and shear deformation of muscle stem cells in their native niche. Biophys J 2021; 120:2665-2678. [PMID: 34087215 PMCID: PMC8390894 DOI: 10.1016/j.bpj.2021.05.021] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2020] [Revised: 05/02/2021] [Accepted: 05/18/2021] [Indexed: 12/28/2022] Open
Abstract
Muscle stem cells (MuSCs) are requisite for skeletal muscle regeneration and homeostasis. Proper functioning of MuSCs, including activation, proliferation, and fate decision, is determined by an orchestrated series of events and communication between MuSCs and their niche. A multitude of biochemical stimuli are known to regulate MuSC fate and function. However, in addition to biochemical factors, it is conceivable that MuSCs are subjected to mechanical forces during muscle stretch-shortening cycles because of myofascial connections between MuSCs and myofibers. MuSCs respond to mechanical forces in vitro, but it remains to be proven whether physical forces are also exerted on MuSCs in their native niche and whether they contribute to the functioning and fate of MuSCs. MuSC deformation in their native niche resulting from mechanical loading of ex vivo myofiber bundles was visualized utilizing mT/mG double-fluorescent Cre-reporter mouse and multiphoton microscopy. MuSCs were subjected to 1 h pulsating fluid shear stress (PFSS) with a peak shear stress rate of 6.5 Pa/s. After PFSS treatment, nitric oxide, messenger RNA (mRNA) expression levels of genes involved in regulation of MuSC proliferation and differentiation, ERK 1/2, p38, and AKT activation were determined. Ex vivo stretching of extensor digitorum longus and soleus myofiber bundles caused compression as well as tensile and shear deformation of MuSCs in their niche. MuSCs responded to PFSS in vitro with increased nitric oxide production and an upward trend in iNOS mRNA levels. PFSS enhanced gene expression of c-Fos, Cdk4, and IL-6, whereas expression of Wnt1, MyoD, Myog, Wnt5a, COX2, Rspo1, Vangl2, Wnt10b, and MGF remained unchanged. ERK 1/2 and p38 MAPK signaling were also upregulated after PFSS treatment. We conclude that MuSCs in their native niche are subjected to force-induced deformations due to myofiber stretch-shortening. Moreover, MuSCs are mechanoresponsive, as evidenced by PFSS-mediated expression of factors by MuSCs known to promote proliferation.
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14
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von Maltzahn J. Regulation of muscle stem cell function. VITAMINS AND HORMONES 2021; 116:295-311. [PMID: 33752822 DOI: 10.1016/bs.vh.2021.02.012] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
Regeneration of skeletal muscle is a finely tuned process which is depending on muscle stem cells, a population of stem cells in skeletal muscle which is also termed satellite cells. Muscle stem cells are a prerequisite for regeneration of skeletal muscle. Of note, the muscle stem cell population is heterogeneous and subpopulations can be identified depending on gene expression or phenotypic traits. However, all muscle stem cells express the transcription factor Pax7 and their functionality is tightly controlled by intrinsic signaling pathways and extrinsic signals. The latter ones include signals form the stem cell niche as well as circulating factors such as growth factors and hormones. Among them are Wnt proteins, growth factors like IGF-1 or FGF-2 and hormones such as thyroid hormones and the anti-aging hormone Klotho. A highly orchestrated interplay between those factors and muscle stem cells is important for their full functionality and ultimately regeneration of skeletal muscle as outlined here.
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15
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Girardi F, Taleb A, Ebrahimi M, Datye A, Gamage DG, Peccate C, Giordani L, Millay DP, Gilbert PM, Cadot B, Le Grand F. TGFβ signaling curbs cell fusion and muscle regeneration. Nat Commun 2021; 12:750. [PMID: 33531466 PMCID: PMC7854756 DOI: 10.1038/s41467-020-20289-8] [Citation(s) in RCA: 47] [Impact Index Per Article: 15.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2019] [Accepted: 11/21/2020] [Indexed: 12/12/2022] Open
Abstract
Muscle cell fusion is a multistep process involving cell migration, adhesion, membrane remodeling and actin-nucleation pathways to generate multinucleated myotubes. However, molecular brakes restraining cell-cell fusion events have remained elusive. Here we show that transforming growth factor beta (TGFβ) pathway is active in adult muscle cells throughout fusion. We find TGFβ signaling reduces cell fusion, regardless of the cells' ability to move and establish cell-cell contacts. In contrast, inhibition of TGFβ signaling enhances cell fusion and promotes branching between myotubes in mouse and human. Exogenous addition of TGFβ protein in vivo during muscle regeneration results in a loss of muscle function while inhibition of TGFβR2 induces the formation of giant myofibers. Transcriptome analyses and functional assays reveal that TGFβ controls the expression of actin-related genes to reduce cell spreading. TGFβ signaling is therefore requisite to limit mammalian myoblast fusion, determining myonuclei numbers and myofiber size.
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Affiliation(s)
- Francesco Girardi
- Sorbonne Université, INSERM UMRS974, Association Institut de Myologie, Centre de Recherche en Myologie, 75013, Paris, France
| | - Anissa Taleb
- Sorbonne Université, INSERM UMRS974, Association Institut de Myologie, Centre de Recherche en Myologie, 75013, Paris, France
| | - Majid Ebrahimi
- Institute of Biomedical Engineering, University of Toronto, Toronto, ON, M5S3G9, Canada
- Donnelly Centre for Cellular and Biomolecular Research, Toronto, ON, M5S3E1, Canada
| | - Asiman Datye
- Institute of Biomedical Engineering, University of Toronto, Toronto, ON, M5S3G9, Canada
- Donnelly Centre for Cellular and Biomolecular Research, Toronto, ON, M5S3E1, Canada
| | - Dilani G Gamage
- Division of Molecular Cardiovascular Biology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, 45229, USA
| | - Cécile Peccate
- Sorbonne Université, INSERM UMRS974, Association Institut de Myologie, Centre de Recherche en Myologie, 75013, Paris, France
| | - Lorenzo Giordani
- Sorbonne Université, INSERM UMRS974, Association Institut de Myologie, Centre de Recherche en Myologie, 75013, Paris, France
| | - Douglas P Millay
- Division of Molecular Cardiovascular Biology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, 45229, USA
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH, 45229, USA
| | - Penney M Gilbert
- Institute of Biomedical Engineering, University of Toronto, Toronto, ON, M5S3G9, Canada
- Donnelly Centre for Cellular and Biomolecular Research, Toronto, ON, M5S3E1, Canada
- Department of Cell and Systems Biology, University of Toronto, Toronto, ON, M5S3G5, Canada
| | - Bruno Cadot
- Sorbonne Université, INSERM UMRS974, Association Institut de Myologie, Centre de Recherche en Myologie, 75013, Paris, France
| | - Fabien Le Grand
- Sorbonne Université, INSERM UMRS974, Association Institut de Myologie, Centre de Recherche en Myologie, 75013, Paris, France.
- Institut NeuroMyoGène, Université Claude Bernard Lyon 1, CNRS UMR 5310, INSERM U1217, 69008, Lyon, France.
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16
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Cipriano A, Macino M, Buonaiuto G, Santini T, Biferali B, Peruzzi G, Colantoni A, Mozzetta C, Ballarino M. Epigenetic regulation of Wnt7b expression by the cis-acting long noncoding RNA Lnc-Rewind in muscle stem cells. eLife 2021; 10:54782. [PMID: 33432928 PMCID: PMC7837680 DOI: 10.7554/elife.54782] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2019] [Accepted: 01/11/2021] [Indexed: 12/19/2022] Open
Abstract
Skeletal muscle possesses an outstanding capacity to regenerate upon injury due to the adult muscle stem cell (MuSC) activity. This ability requires the proper balance between MuSC expansion and differentiation, which is critical for muscle homeostasis and contributes, if deregulated, to muscle diseases. Here, we functionally characterize a novel chromatin-associated long noncoding RNA (lncRNA), Lnc-Rewind, which is expressed in murine MuSCs and conserved in human. We find that, in mouse, Lnc-Rewind acts as an epigenetic regulator of MuSC proliferation and expansion by influencing the expression of skeletal muscle genes and several components of the WNT (Wingless-INT) signalling pathway. Among them, we identified the nearby Wnt7b gene as a direct Lnc-Rewind target. We show that Lnc-Rewind interacts with the G9a histone lysine methyltransferase and mediates the in cis repression of Wnt7b by H3K9me2 deposition. Overall, these findings provide novel insights into the epigenetic regulation of adult muscle stem cells fate by lncRNAs.
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Affiliation(s)
- Andrea Cipriano
- Department of Biology and Biotechnology Charles Darwin, Sapienza University of Rome, Rome, Italy
| | - Martina Macino
- Department of Biology and Biotechnology Charles Darwin, Sapienza University of Rome, Rome, Italy.,Institute of Molecular Biology and Pathology (IBPM), National Research Council (CNR) at Sapienza University of Rome, Rome, Italy
| | - Giulia Buonaiuto
- Department of Biology and Biotechnology Charles Darwin, Sapienza University of Rome, Rome, Italy
| | - Tiziana Santini
- Department of Biology and Biotechnology Charles Darwin, Sapienza University of Rome, Rome, Italy.,Center for Life Nano Science at Sapienza, Istituto Italiano di Tecnologia, Rome, Italy
| | - Beatrice Biferali
- Department of Biology and Biotechnology Charles Darwin, Sapienza University of Rome, Rome, Italy.,Institute of Molecular Biology and Pathology (IBPM), National Research Council (CNR) at Sapienza University of Rome, Rome, Italy
| | - Giovanna Peruzzi
- Center for Life Nano Science at Sapienza, Istituto Italiano di Tecnologia, Rome, Italy
| | - Alessio Colantoni
- Department of Biology and Biotechnology Charles Darwin, Sapienza University of Rome, Rome, Italy
| | - Chiara Mozzetta
- Institute of Molecular Biology and Pathology (IBPM), National Research Council (CNR) at Sapienza University of Rome, Rome, Italy
| | - Monica Ballarino
- Department of Biology and Biotechnology Charles Darwin, Sapienza University of Rome, Rome, Italy
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17
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Leung C, Murad KBA, Tan ALT, Yada S, Sagiraju S, Bode PK, Barker N. Lgr5 Marks Adult Progenitor Cells Contributing to Skeletal Muscle Regeneration and Sarcoma Formation. Cell Rep 2020; 33:108535. [PMID: 33357435 DOI: 10.1016/j.celrep.2020.108535] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2020] [Revised: 09/15/2020] [Accepted: 11/25/2020] [Indexed: 12/21/2022] Open
Abstract
Regeneration of adult skeletal muscle is driven largely by resident satellite cells, a stem cell population increasingly considered to display a high degree of molecular heterogeneity. In this study, we find that Lgr5, a receptor for Rspo and a potent mediator of Wnt/β-catenin signaling, marks a subset of activated satellite cells that contribute to muscle regeneration. Lgr5 is found to be rapidly upregulated in purified myogenic progenitors following acute cardiotoxin-induced injury. In vivo lineage tracing using our Lgr5-2ACreERT2R26tdTomatoLSL reporter mouse model shows that Lgr5+ cells can reconstitute damaged muscle fibers following muscle injury, as well as replenish the quiescent satellite cell pool. Moreover, conditional mutation in Lgr52ACreERT2;KrasG12D;Trp53flox/flox mice drives undifferentiated pleomorphic sarcoma formation in adult mice, thereby substantiating Lgr5+ cells as a cell of origin of sarcomas. Our findings provide the groundwork for developing Rspo/Wnt-signaling-based therapeutics to potentially enhance regenerative outcomes of skeletal muscles in degenerative muscle diseases.
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Affiliation(s)
- Carly Leung
- A(∗)STAR Institute of Medical Biology, Singapore 138648, Singapore; A(∗)STAR Institute of Molecular and Cellular Biology, Singapore 138648, Singapore
| | - Katzrin Bte Ahmad Murad
- A(∗)STAR Institute of Medical Biology, Singapore 138648, Singapore; A(∗)STAR Institute of Molecular and Cellular Biology, Singapore 138648, Singapore
| | - Adelyn Liang Thing Tan
- A(∗)STAR Institute of Medical Biology, Singapore 138648, Singapore; A(∗)STAR Institute of Molecular and Cellular Biology, Singapore 138648, Singapore
| | - Swathi Yada
- A(∗)STAR Institute of Medical Biology, Singapore 138648, Singapore; A(∗)STAR Institute of Molecular and Cellular Biology, Singapore 138648, Singapore
| | - Sowmya Sagiraju
- A(∗)STAR Institute of Medical Biology, Singapore 138648, Singapore; A(∗)STAR Institute of Molecular and Cellular Biology, Singapore 138648, Singapore
| | - Peter Karl Bode
- Department of Surgical Pathology, University Hospital Zurich, Zurich, Switzerland
| | - Nick Barker
- A(∗)STAR Institute of Medical Biology, Singapore 138648, Singapore; A(∗)STAR Institute of Molecular and Cellular Biology, Singapore 138648, Singapore; Cancer Research Institute, Kanazawa University, Kakuma-machi Kanazawa 920-1192, Japan; School of Biological Sciences, Nanyang Technological University, Singapore 308232, Singapore.
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18
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Trentesaux C, Striedinger K, Pomerantz JH, Klein OD. From gut to glutes: The critical role of niche signals in the maintenance and renewal of adult stem cells. Curr Opin Cell Biol 2020; 63:88-101. [PMID: 32036295 PMCID: PMC7247951 DOI: 10.1016/j.ceb.2020.01.004] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2019] [Revised: 12/17/2019] [Accepted: 01/07/2020] [Indexed: 02/07/2023]
Abstract
Stem cell behavior is tightly regulated by spatiotemporal signaling from the niche, which is a four-dimensional microenvironment that can instruct stem cells to remain quiescent, self-renew, proliferate, or differentiate. In this review, we discuss recent advances in understanding the signaling cues provided by the stem cell niche in two contrasting adult tissues, the rapidly cycling intestinal epithelium and the slowly renewing skeletal muscle. Drawing comparisons between these two systems, we discuss the effects of niche-derived growth factors and signaling molecules, metabolic cues, the extracellular matrix and biomechanical cues, and immune signals on stem cells. We also discuss the influence of the niche in defining stem cell identity and function in both normal and pathophysiologic states.
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Affiliation(s)
- Coralie Trentesaux
- Program in Craniofacial Biology and Department of Orofacial Sciences, University of California, San Francisco, CA, USA
| | - Katharine Striedinger
- Program in Craniofacial Biology and Department of Orofacial Sciences, University of California, San Francisco, CA, USA
| | - Jason H Pomerantz
- Program in Craniofacial Biology and Department of Orofacial Sciences, University of California, San Francisco, CA, USA; Division of Plastic and Reconstructive Surgery, Department of Surgery, University of California San Francisco, San Francisco, CA, USA
| | - Ophir D Klein
- Program in Craniofacial Biology and Department of Orofacial Sciences, University of California, San Francisco, CA, USA; Department of Pediatrics and Institute for Human Genetics, University of California, San Francisco, CA, USA.
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19
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WNT7A Overexpression Inhibits Growth and Migration of Hepatocellular Carcinoma via the β-Catenin Independent Pathway. BIOMED RESEARCH INTERNATIONAL 2019; 2019:3605950. [PMID: 31886205 PMCID: PMC6925688 DOI: 10.1155/2019/3605950] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/04/2019] [Revised: 10/07/2019] [Accepted: 10/09/2019] [Indexed: 12/24/2022]
Abstract
Background/Aims. Hepatocellular carcinoma (HCC) is the lethal digestive cancer and the second leading cause of cancer death in men worldwide. Wnt7a, a 39Kd secreted glycoprotein composed of 349 amino acids, was reported to be related to various diseases. However, its role in HCC has not been studied yet. In this study, using gene expression data and clinical information obtained from the Oncomine and KMplot database, we acknowledged that WNT7A was underexpressed in HCC cancer tissue compared with normal tissue, and WNT7A underexpression was correlated with the decreased survival rate of HCC patients. The function of Wnt7a in cell viability, apoptosis, and migration was evaluated by biological behavior assay and molecular analysis. The findings revealed that WNT7A overexpression significantly restrained cell viability and migration while enhancing apoptosis. In addition, WNT7A overexpression promoted cell apoptosis by strengthening Caspase-3 activity and inhibited migration by downregulating EMT transcriptional factor Snail. Furthermore, the expression level of SKP2 was significantly downregulating in the WNT7A overexpression group. In conclusion, this study illustrated that overexpression of WNT7A inhibited cell viability and migration, which was likely attributed to the regulation of SKP2/P21.
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20
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Han S, Cui C, He H, Shen X, Chen Y, Wang Y, Li D, Zhu Q, Yin H. Myoferlin Regulates Wnt/β-Catenin Signaling-Mediated Skeletal Muscle Development by Stabilizing Dishevelled-2 Against Autophagy. Int J Mol Sci 2019; 20:ijms20205130. [PMID: 31623157 PMCID: PMC6829482 DOI: 10.3390/ijms20205130] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2019] [Revised: 10/13/2019] [Accepted: 10/15/2019] [Indexed: 12/02/2022] Open
Abstract
Myoferlin (MyoF), which is a calcium/phospholipid-binding protein expressed in cardiac and muscle tissues, belongs to the ferlin family. While MyoF promotes myoblast differentiation, the underlying mechanisms remain poorly understood. Here, we found that MyoF not only promotes C2C12 myoblast differentiation, but also inhibits muscle atrophy and autophagy. In the present study, we found that myoblasts fail to develop into mature myotubes due to defective differentiation in the absence of MyoF. Meanwhile, MyoF regulates the expression of atrophy-related genes (Atrogin-1 and MuRF1) to rescue muscle atrophy. Furthermore, MyoF interacts with Dishevelled-2 (Dvl-2) to activate canonical Wnt signaling. MyoF facilitates Dvl-2 ubiquitination resistance by reducing LC3-labeled Dvl-2 levels and antagonizing the autophagy system. In conclusion, we found that MyoF plays an important role in myoblast differentiation during skeletal muscle atrophy. At the molecular level, MyoF protects Dvl-2 against autophagy-mediated degradation, thus promoting activation of the Wnt/β-catenin signaling pathway. Together, our findings suggest that MyoF, through stabilizing Dvl-2 and preventing autophagy, regulates Wnt/β-catenin signaling-mediated skeletal muscle development.
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Affiliation(s)
- Shunshun Han
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu 611130, Sichuan, China.
| | - Can Cui
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu 611130, Sichuan, China.
| | - Haorong He
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu 611130, Sichuan, China.
| | - Xiaoxu Shen
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu 611130, Sichuan, China.
| | - Yuqi Chen
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu 611130, Sichuan, China.
| | - Yan Wang
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu 611130, Sichuan, China.
| | - Diyan Li
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu 611130, Sichuan, China.
| | - Qing Zhu
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu 611130, Sichuan, China.
| | - Huadong Yin
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu 611130, Sichuan, China.
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21
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Yoshida N, Endo J, Kinouchi K, Kitakata H, Moriyama H, Kataoka M, Yamamoto T, Shirakawa K, Morimoto S, Nishiyama A, Hashiguchi A, Higuchi I, Fukuda K, Ichihara A, Sano M. (Pro)renin receptor accelerates development of sarcopenia via activation of Wnt/YAP signaling axis. Aging Cell 2019; 18:e12991. [PMID: 31282603 PMCID: PMC6718617 DOI: 10.1111/acel.12991] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2018] [Revised: 05/13/2019] [Accepted: 05/26/2019] [Indexed: 01/19/2023] Open
Abstract
To extend life expectancy and ensure healthy aging, it is crucial to prevent and minimize age‐induced skeletal muscle atrophy, also known as sarcopenia. However, the disease's molecular mechanism remains unclear. The age‐related Wnt/β‐catenin signaling pathway has been recently shown to be activated by the (pro)renin receptor ((P)RR). We report here that (P)RR expression was increased in the atrophied skeletal muscles of aged mice and humans. Therefore, we developed a gain‐of‐function model of age‐related sarcopenia via transgenic expression of (P)RR under control of the CAG promoter. Consistent with our hypothesis, (P)RR‐Tg mice died early and exhibited muscle atrophy with histological features of sarcopenia. Moreover, Wnt/β‐catenin signaling was activated and the regenerative capacity of muscle progenitor cells after cardiotoxin injury was impaired due to cell fusion failure in (P)RR‐Tg mice. In vitro forced expression of (P)RR protein in C2C12 myoblast cells suppressed myotube formation by activating Wnt/β‐catenin signaling. Administration of Dickkopf‐related protein 1, an inhibitor of Wnt/β‐catenin signaling, and anti‐(P)RR neutralizing antibody, which inhibits binding of (P)RR to the Wnt receptor, significantly improved sarcopenia in (P)RR‐Tg mice. Furthermore, the use of anti‐(P)RR neutralizing antibodies significantly improved the regenerative ability of skeletal muscle in aged mice. Finally, we show that Yes‐associated protein (YAP) signaling, which is coordinately regulated by Wnt/β‐catenin, contributed to the development of (P)RR‐induced sarcopenia. The present study demonstrates the use of (P)RR‐Tg mice as a novel sarcopenia model, and shows that (P)RR‐Wnt‐YAP signaling plays a pivotal role in the pathogenesis of this disease.
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Affiliation(s)
- Naohiro Yoshida
- Department of Endocrinology and Hypertension Tokyo Women’s Medical University Tokyo Japan
- Department of Cardiology, School of Medicine Keio University Tokyo Japan
| | - Jin Endo
- Department of Cardiology, School of Medicine Keio University Tokyo Japan
| | - Kenichiro Kinouchi
- Department of Internal Medicine, School of Medicine Keio University Tokyo Japan
| | - Hiroki Kitakata
- Department of Cardiology, School of Medicine Keio University Tokyo Japan
| | - Hidenori Moriyama
- Department of Cardiology, School of Medicine Keio University Tokyo Japan
| | - Masaharu Kataoka
- Department of Cardiology, School of Medicine Keio University Tokyo Japan
| | - Tsunehisa Yamamoto
- Department of Cardiology, School of Medicine Keio University Tokyo Japan
| | - Kohsuke Shirakawa
- Department of Cardiology, School of Medicine Keio University Tokyo Japan
| | - Satoshi Morimoto
- Department of Endocrinology and Hypertension Tokyo Women’s Medical University Tokyo Japan
| | - Akira Nishiyama
- Department of Pharmacology, Faculty of Medicine Kagawa University Kagawa Japan
| | - Akihiro Hashiguchi
- Department of Neurology and Geriatrics, Graduate School of Medical and Dental Sciences Kagoshima University Kagoshima Japan
| | - Itsuro Higuchi
- School of Health Sciences, Faculty of Medicine Kagoshima University Kagoshima Japan
| | - Keiichi Fukuda
- Department of Cardiology, School of Medicine Keio University Tokyo Japan
| | - Atsuhiro Ichihara
- Department of Endocrinology and Hypertension Tokyo Women’s Medical University Tokyo Japan
| | - Motoaki Sano
- Department of Cardiology, School of Medicine Keio University Tokyo Japan
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22
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Wnt4 from the Niche Controls the Mechano-Properties and Quiescent State of Muscle Stem Cells. Cell Stem Cell 2019; 25:654-665.e4. [PMID: 31495781 DOI: 10.1016/j.stem.2019.08.007] [Citation(s) in RCA: 93] [Impact Index Per Article: 18.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2018] [Revised: 04/19/2019] [Accepted: 08/12/2019] [Indexed: 12/31/2022]
Abstract
Satellite cells (SCs) reside in a dormant state during tissue homeostasis. The specific paracrine agents and niche cells that maintain SC quiescence remain unknown. We find that Wnt4 produced by the muscle fiber maintains SC quiescence through RhoA. Using cell-specific inducible genetics, we find that a Wnt4-Rho signaling axis constrains SC numbers and activation during tissue homeostasis in adult mice. Wnt4 activates Rho in quiescent SCs to maintain mechanical strain, restrict movement in the niche, and repress YAP. The induction of YAP upon disruption of RhoA is essential for SC activation under homeostasis. In the context of injury, the loss of Wnt4 from the niche accelerates SC activation and muscle repair, whereas overexpression of Wnt4 transitions SCs into a deeper state of quiescence and delays muscle repair. In conclusion, the SC pool undergoes dynamic transitions during early activation with changes in mechano-properties and cytoskeleton signaling preceding cell-cycle entry.
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23
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Schmidt M, Schüler SC, Hüttner SS, von Eyss B, von Maltzahn J. Adult stem cells at work: regenerating skeletal muscle. Cell Mol Life Sci 2019; 76:2559-2570. [PMID: 30976839 PMCID: PMC6586695 DOI: 10.1007/s00018-019-03093-6] [Citation(s) in RCA: 158] [Impact Index Per Article: 31.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2018] [Revised: 03/29/2019] [Accepted: 04/03/2019] [Indexed: 12/16/2022]
Abstract
Skeletal muscle regeneration is a finely tuned process involving the activation of various cellular and molecular processes. Satellite cells, the stem cells of skeletal muscle, are indispensable for skeletal muscle regeneration. Their functionality is critically modulated by intrinsic signaling pathways as well as by interactions with the stem cell niche. Here, we discuss the properties of satellite cells, including heterogeneity regarding gene expression and/or their phenotypic traits and the contribution of satellite cells to skeletal muscle regeneration. We also summarize the process of regeneration with a specific emphasis on signaling pathways, cytoskeletal rearrangements, the importance of miRNAs, and the contribution of non-satellite cells such as immune cells, fibro-adipogenic progenitor cells, and PW1-positive/Pax7-negative interstitial cells.
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Affiliation(s)
- Manuel Schmidt
- Leibniz Institute on Aging, Fritz Lipmann Institute, Beutenbergstrasse 11, 07745, Jena, Germany
| | - Svenja C Schüler
- Leibniz Institute on Aging, Fritz Lipmann Institute, Beutenbergstrasse 11, 07745, Jena, Germany
| | - Sören S Hüttner
- Leibniz Institute on Aging, Fritz Lipmann Institute, Beutenbergstrasse 11, 07745, Jena, Germany
| | - Björn von Eyss
- Leibniz Institute on Aging, Fritz Lipmann Institute, Beutenbergstrasse 11, 07745, Jena, Germany
| | - Julia von Maltzahn
- Leibniz Institute on Aging, Fritz Lipmann Institute, Beutenbergstrasse 11, 07745, Jena, Germany.
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24
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Raslan AA, Yoon JK. R-spondins: Multi-mode WNT signaling regulators in adult stem cells. Int J Biochem Cell Biol 2019; 106:26-34. [DOI: 10.1016/j.biocel.2018.11.005] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2018] [Revised: 11/04/2018] [Accepted: 11/09/2018] [Indexed: 01/08/2023]
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25
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Suzuki A, Minamide R, Iwata J. WNT/β-catenin signaling plays a crucial role in myoblast fusion through regulation of nephrin expression during development. Development 2018; 145:dev.168351. [PMID: 30389854 DOI: 10.1242/dev.168351] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2018] [Accepted: 10/24/2018] [Indexed: 01/06/2023]
Abstract
Skeletal muscle development is controlled by a series of multiple orchestrated regulatory pathways. WNT/β-catenin is one of the most important pathways for myogenesis; however, it remains unclear how this signaling pathway regulates myogenesis in a temporal- and spatial-specific manner. Here, we show that WNT/β-catenin signaling is crucial for myoblast fusion through regulation of the nephrin (Nphs1) gene in the Myog-Cre-expressing myoblast population. Mice deficient for the β-catenin gene in Myog-Cre-expressing myoblasts (Ctnnb1F/F;Myog-Cre mice) displayed myoblast fusion defects, but not migration or cell proliferation defects. The promoter region of Nphs1 contains the conserved β-catenin-binding element, and Nphs1 expression was induced by the activation of WNT/β-catenin signaling. The induction of Nphs1 in cultured myoblasts from Ctnnb1F/F;Myog-Cre mice restored the myoblast fusion defect, indicating that nephrin is functionally relevant in WNT/β-catenin-dependent myoblast fusion. Taken together, our results indicate that WNT/β-catenin signaling is crucial for myoblast fusion through the regulation of the Nphs1 gene.
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Affiliation(s)
- Akiko Suzuki
- Department of Diagnostic and Biomedical Sciences, The University of Texas Health Science Center at Houston (UT Health) School of Dentistry, Houston, TX 77054, USA.,Center for Craniofacial Research, UT Health School of Dentistry, Houston, TX 77054, USA
| | - Ryohei Minamide
- Department of Diagnostic and Biomedical Sciences, The University of Texas Health Science Center at Houston (UT Health) School of Dentistry, Houston, TX 77054, USA.,Center for Craniofacial Research, UT Health School of Dentistry, Houston, TX 77054, USA
| | - Junichi Iwata
- Department of Diagnostic and Biomedical Sciences, The University of Texas Health Science Center at Houston (UT Health) School of Dentistry, Houston, TX 77054, USA .,Center for Craniofacial Research, UT Health School of Dentistry, Houston, TX 77054, USA.,MD Anderson Cancer Center, UT Health Graduate School of Biomedical Sciences, Houston, TX 77054, USA
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26
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Miao N, Bian S, Lee T, Mubarak T, Huang S, Wen Z, Hussain G, Sun T. Opposite Roles of Wnt7a and Sfrp1 in Modulating Proper Development of Neural Progenitors in the Mouse Cerebral Cortex. Front Mol Neurosci 2018; 11:247. [PMID: 30065628 PMCID: PMC6056652 DOI: 10.3389/fnmol.2018.00247] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2018] [Accepted: 06/28/2018] [Indexed: 12/22/2022] Open
Abstract
The Wingless (Wnt)-mediated signals are involved in many important aspects of development of the mammalian cerebral cortex. How Wnts interact with their modulators in cortical development is still unclear. Here, we show that Wnt7a and secreted frizzled-related protein 1 (Sfrp1), a soluble modulator of Wnts, are co-expressed in mouse embryonic cortical neural progenitors (NPs). Knockout of Wnt7a in mice causes microcephaly due to reduced NP population and neurogenesis, and Sfrp1 has an opposing effect compared to Wnt7a. Similar to Dkk1, Sfrp1 decreases the Wnt1 and Wnt7a activity in vitro. Our results suggest that Wnt7a and Sfrp1 play opposite roles to ensure proper NP progeny in the developing cortex.
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Affiliation(s)
- Nan Miao
- Center for Precision Medicine, School of Medicine and School of Biomedical Sciences, Huaqiao University, Xiamen, China
| | - Shan Bian
- Department of Cell and Developmental Biology, Weill Cornell Medicine, Cornell University, New York, NY, United States
| | - Trevor Lee
- Department of Cell and Developmental Biology, Weill Cornell Medicine, Cornell University, New York, NY, United States
| | - Taufif Mubarak
- Department of Cell and Developmental Biology, Weill Cornell Medicine, Cornell University, New York, NY, United States
| | - Shiying Huang
- College of Oceanology and Food Science, Quanzhou Normal University, Quanzhou, China
| | - Zhihong Wen
- Marine Biomedical Laboratory and Center for Translational Biopharmaceuticals, Department of Marine Biotechnology and Resources, National Sun Yat-sen University, Kaohsiung, Taiwan
| | - Ghulam Hussain
- Department of Physiology, Government College University, Faisalabad, Pakistan
| | - Tao Sun
- Center for Precision Medicine, School of Medicine and School of Biomedical Sciences, Huaqiao University, Xiamen, China
- Department of Cell and Developmental Biology, Weill Cornell Medicine, Cornell University, New York, NY, United States
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27
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Ogasawara R, Hashimoto D, Kimura S, Hayase E, Ara T, Takahashi S, Ohigashi H, Yoshioka K, Tateno T, Yokoyama E, Ebata K, Kondo T, Sugita J, Onozawa M, Iwanaga T, Teshima T. Intestinal Lymphatic Endothelial Cells Produce R-Spondin3. Sci Rep 2018; 8:10719. [PMID: 30013036 PMCID: PMC6048029 DOI: 10.1038/s41598-018-29100-7] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2018] [Accepted: 07/03/2018] [Indexed: 02/08/2023] Open
Abstract
The R-Spondin (R-Spo) family regulates WNT signaling and stimulates the proliferation and differentiation of intestinal stem cells (ISCs). R-Spo plays a critical role in maintaining intestinal homeostasis, but endogenous producers of R-Spo in the intestine remain to be investigated. We found that R-Spo3 was the major R-Spo family member produced in the intestine and it was predominantly produced by CD45−CD90+CD31+ lymphatic endothelial cells (LECs) in the lamina propria of the intestinal mucosa. Transcriptome analysis demonstrated that LECs highly expressed R-Spo receptor, Lgr5, suggesting an autocrine stimulatory loop in LECs. LECs were significantly reduced in number, and their R-Spo3 production was impaired in intestinal graft-versus-host disease (GVHD) after allogeneic hematopoietic stem cell transplantation. The impaired production of R-Spo3 in the intestine may be a novel mechanism of delayed tissue repair and defective mucosal defense in intestinal GVHD. We demonstrate a novel role of intestinal LECs in producing R-Spondin3 to maintain intestinal homeostasis.
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Affiliation(s)
- Reiki Ogasawara
- Department of Hematology, Hokkaido University Faculty of Medicine and Graduate School of Medicine, Sapporo, Japan
| | - Daigo Hashimoto
- Department of Hematology, Hokkaido University Faculty of Medicine and Graduate School of Medicine, Sapporo, Japan.
| | - Shunsuke Kimura
- Laboratory of Histology and Cytology, Department of Anatomy, Hokkaido University Graduate School of Medicine, Sapporo, Japan
| | - Eiko Hayase
- Department of Hematology, Hokkaido University Faculty of Medicine and Graduate School of Medicine, Sapporo, Japan
| | - Takahide Ara
- Department of Hematology, Hokkaido University Faculty of Medicine and Graduate School of Medicine, Sapporo, Japan
| | - Shuichiro Takahashi
- Department of Hematology, Hokkaido University Faculty of Medicine and Graduate School of Medicine, Sapporo, Japan
| | - Hiroyuki Ohigashi
- Department of Hematology, Hokkaido University Faculty of Medicine and Graduate School of Medicine, Sapporo, Japan
| | - Kosuke Yoshioka
- Department of Hematology, Hokkaido University Faculty of Medicine and Graduate School of Medicine, Sapporo, Japan
| | - Takahiro Tateno
- Department of Hematology, Hokkaido University Faculty of Medicine and Graduate School of Medicine, Sapporo, Japan
| | - Emi Yokoyama
- Department of Hematology, Hokkaido University Faculty of Medicine and Graduate School of Medicine, Sapporo, Japan
| | - Ko Ebata
- Department of Hematology, Hokkaido University Faculty of Medicine and Graduate School of Medicine, Sapporo, Japan
| | - Takeshi Kondo
- Department of Hematology, Hokkaido University Faculty of Medicine and Graduate School of Medicine, Sapporo, Japan
| | - Junichi Sugita
- Department of Hematology, Hokkaido University Faculty of Medicine and Graduate School of Medicine, Sapporo, Japan
| | - Masahiro Onozawa
- Department of Hematology, Hokkaido University Faculty of Medicine and Graduate School of Medicine, Sapporo, Japan
| | - Toshihiko Iwanaga
- Laboratory of Histology and Cytology, Department of Anatomy, Hokkaido University Graduate School of Medicine, Sapporo, Japan
| | - Takanori Teshima
- Department of Hematology, Hokkaido University Faculty of Medicine and Graduate School of Medicine, Sapporo, Japan.
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28
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Dkk3 dependent transcriptional regulation controls age related skeletal muscle atrophy. Nat Commun 2018; 9:1752. [PMID: 29717119 PMCID: PMC5931527 DOI: 10.1038/s41467-018-04038-6] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2016] [Accepted: 03/22/2018] [Indexed: 02/07/2023] Open
Abstract
Age-related muscle atrophy (sarcopenia) is the leading cause for disability in aged population, but the underlying molecular mechanisms are poorly understood. Here we identify a novel role for the secreted glycoprotein Dickkopf 3 (Dkk3) in sarcopenia. Forced expression of Dkk3 in muscles in young mice leads to muscle atrophy. Conversely, reducing its expression in old muscles restores both muscle size and function. Dkk3 induces nuclear import of β-catenin and enhances its interaction with FoxO3, which in turn activates the transcription of E3 ubiquitin ligase Fbxo32 and Trim63, driving muscle atrophy. These findings suggest that Dkk3 may be used as diagnostic marker and as therapeutic target for age-related muscle atrophy, and reveal a distinct transcriptional control of Fbxo32 and Trim63.
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29
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Girardi F, Le Grand F. Wnt Signaling in Skeletal Muscle Development and Regeneration. PROGRESS IN MOLECULAR BIOLOGY AND TRANSLATIONAL SCIENCE 2018; 153:157-179. [DOI: 10.1016/bs.pmbts.2017.11.026] [Citation(s) in RCA: 67] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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30
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Monteagudo S, Lories RJ. Cushioning the cartilage: a canonical Wnt restricting matter. Nat Rev Rheumatol 2017; 13:670-681. [PMID: 29021569 DOI: 10.1038/nrrheum.2017.171] [Citation(s) in RCA: 43] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Wnt signalling pathways have key roles in joint development, homeostasis and disease, particularly in osteoarthritis. New data is starting to reveal the importance of tightly regulating canonical Wnt signalling pathway activation to maintain homeostasis and health in articular cartilage. In addition to the presence of different Wnt antagonists that limit pathway activation in articular cartilage, the reciprocal crosstalk between the canonical and non-canonical cascades and competitive antagonism between different Wnt ligands seem to be critical in restraining excessive Wnt pathway activation. Changes in transcriptional complex assembly upon Wnt pathway activation, epigenetic modulation of target gene transcription, in particular through histone modifications, and complex interactions between the Wnt signalling pathway and other signalling pathways, are also instrumental in adjusting Wnt signalling. In this Review, the cellular and molecular mechanisms involved in fine-tuning canonical Wnt signalling in the joint are updated, with a focus on the articular cartilage. The interventions for preventing or treating osteoarthritis are also discussed, which should aim to limit disease-associated excessive canonical Wnt activity to avoid joint damage.
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Affiliation(s)
- Silvia Monteagudo
- Laboratory for Tissue Homeostasis and Disease, Skeletal Biology and Engineering Research Centre, Department of Development and Regeneration, Katholieke Universiteit Leuven, Herestraat 49, B-3000 Leuven, Belgium
| | - Rik J Lories
- Laboratory for Tissue Homeostasis and Disease, Skeletal Biology and Engineering Research Centre, Department of Development and Regeneration, Katholieke Universiteit Leuven, Herestraat 49, B-3000 Leuven, Belgium.,Division of Rheumatology, University Hospitals Leuven, Herestraat 49, B-3000 Leuven, Belgium
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