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Liu C, Yang P, Wang X, Xiang B, E G, Huang Y. Candidate circRNAs related to skeletal muscle development in Dazu black goats. Anim Biotechnol 2024; 35:2286609. [PMID: 38032316 DOI: 10.1080/10495398.2023.2286609] [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: 12/01/2023]
Abstract
Circular RNA (CircRNA), as a classical noncoding RNA, has been proven to regulate skeletal muscle development (SMD). However, the molecular genetic basis of circRNA regulation in muscle cells remains unclear. In this study, the expression patterns of circRNAs in the longissimus dorsi muscle at embryonic day 75 and postnatal day 1 in DBGs were investigated to identify the key circRNAs that play an important role in SMD in goats. A total of 140 significantly and differentially expressed circRNAs (DEcircRNAs) were identified among the groups at different developmental stages. Among the 116 host genes (HGs) of DEcircRNAs, 76 were significantly and differentially expressed, which was confirmed by previous RNA_seq data. Furthermore, the expression pattern of 10 DEcircRNAs with RT-qPCR was verified, which showed 80% concordance rate with that of RNA_seq datasets. Moreover, the authenticity of seven randomly selected DEcircRNAs was verified by PCR Sanger sequencing. Based on the functional annotation results, among the 76 significantly and differentially expressed HGs, 74 were enriched in 845 GO terms, whereas 35 were annotated to 85 KEGG pathways. The results of this study could provide a comprehensive understanding of the genetic basis of circRNAs involved in SMD and muscle growth.
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Affiliation(s)
- Chengli Liu
- College of Animal Science and Technology, Chongqing Key Laboratory of Forage & Herbivore, Chongqing Engineering Research Centre for Herbivores Resource Protection and Utilization, Southwest University, Chongqing, China
| | - Pu Yang
- College of Animal Science and Technology, Chongqing Key Laboratory of Forage & Herbivore, Chongqing Engineering Research Centre for Herbivores Resource Protection and Utilization, Southwest University, Chongqing, China
| | - Xiao Wang
- College of Animal Science and Technology, Chongqing Key Laboratory of Forage & Herbivore, Chongqing Engineering Research Centre for Herbivores Resource Protection and Utilization, Southwest University, Chongqing, China
| | - Baiju Xiang
- Chongqing Academy of Animal Sciences, Chongqing, China
| | - Guangxin E
- College of Animal Science and Technology, Chongqing Key Laboratory of Forage & Herbivore, Chongqing Engineering Research Centre for Herbivores Resource Protection and Utilization, Southwest University, Chongqing, China
| | - Yongfu Huang
- College of Animal Science and Technology, Chongqing Key Laboratory of Forage & Herbivore, Chongqing Engineering Research Centre for Herbivores Resource Protection and Utilization, Southwest University, Chongqing, China
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2
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Rich J, Bennaroch M, Notel L, Patalakh P, Alberola J, Issa F, Opolon P, Bawa O, Rondof W, Marchais A, Dessen P, Meurice G, Le-Gall M, Polrot M, Ser-Le Roux K, Mamchaoui K, Droin N, Raslova H, Maire P, Geoerger B, Pirozhkova I. DiPRO1 distinctly reprograms muscle and mesenchymal cancer cells. EMBO Mol Med 2024; 16:1840-1885. [PMID: 39009887 PMCID: PMC11319797 DOI: 10.1038/s44321-024-00097-z] [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: 01/10/2023] [Revised: 06/13/2024] [Accepted: 06/18/2024] [Indexed: 07/17/2024] Open
Abstract
We have recently identified the uncharacterized ZNF555 protein as a component of a productive complex involved in the morbid function of the 4qA locus in facioscapulohumeral dystrophy. Subsequently named DiPRO1 (Death, Differentiation, and PROliferation related PROtein 1), our study provides substantial evidence of its role in the differentiation and proliferation of human myoblasts. DiPRO1 operates through the regulatory binding regions of SIX1, a master regulator of myogenesis. Its relevance extends to mesenchymal tumors, such as rhabdomyosarcoma (RMS) and Ewing sarcoma, where DiPRO1 acts as a repressor via the epigenetic regulators TIF1B and UHRF1, maintaining methylation of cis-regulatory elements and gene promoters. Loss of DiPRO1 mimics the host defense response to virus, awakening retrotransposable repeats and the ZNF/KZFP gene family. This enables the eradication of cancer cells, reprogramming the cellular decision balance towards inflammation and/or apoptosis by controlling TNF-α via NF-kappaB signaling. Finally, our results highlight the vulnerability of mesenchymal cancer tumors to si/shDiPRO1-based nanomedicines, positioning DiPRO1 as a potential therapeutic target.
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Affiliation(s)
- Jeremy Rich
- UMR8126 CNRS, Gustave Roussy Cancer campus, Université Paris-Saclay, Villejuif, France
| | - Melanie Bennaroch
- UMR8126 CNRS, Gustave Roussy Cancer campus, Université Paris-Saclay, Villejuif, France
| | - Laura Notel
- UMR8126 CNRS, Gustave Roussy Cancer campus, Université Paris-Saclay, Villejuif, France
| | - Polina Patalakh
- UMR8126 CNRS, Gustave Roussy Cancer campus, Université Paris-Saclay, Villejuif, France
| | - Julien Alberola
- UMR8126 CNRS, Gustave Roussy Cancer campus, Université Paris-Saclay, Villejuif, France
| | - Fayez Issa
- INSERM U1016, CNRS UMR 8104, Institut Cochin, Université Paris-Cité, Paris, France
| | - Paule Opolon
- Pathology and Cytology Section, UMS AMMICA, CNRS, INSERM, Gustave Roussy Cancer campus, Université Paris-Saclay, Villejuif, France
| | - Olivia Bawa
- Pathology and Cytology Section, UMS AMMICA, CNRS, INSERM, Gustave Roussy Cancer campus, Université Paris-Saclay, Villejuif, France
| | - Windy Rondof
- Bioinformatics Platform, UMS AMMICA, CNRS, INSERM, Gustave Roussy Cancer campus, Université Paris-Saclay, Villejuif, France
- Department of Pediatric and Adolescent Oncology, Gustave Roussy Cancer campus, INSERM U1015, Université Paris-Saclay, Villejuif, France
| | - Antonin Marchais
- Bioinformatics Platform, UMS AMMICA, CNRS, INSERM, Gustave Roussy Cancer campus, Université Paris-Saclay, Villejuif, France
- Department of Pediatric and Adolescent Oncology, Gustave Roussy Cancer campus, INSERM U1015, Université Paris-Saclay, Villejuif, France
| | - Philippe Dessen
- Bioinformatics Platform, UMS AMMICA, CNRS, INSERM, Gustave Roussy Cancer campus, Université Paris-Saclay, Villejuif, France
| | - Guillaume Meurice
- Bioinformatics Platform, UMS AMMICA, CNRS, INSERM, Gustave Roussy Cancer campus, Université Paris-Saclay, Villejuif, France
| | - Morgane Le-Gall
- Proteom'IC facility, Université Paris Cité, CNRS, INSERM, Institut Cochin, F-75014, Paris, France
| | - Melanie Polrot
- Pre-clinical Evaluation Unit (PFEP), INSERM, Gustave Roussy Cancer campus, Université Paris-Saclay, Villejuif, France
| | - Karine Ser-Le Roux
- Pre-clinical Evaluation Unit (PFEP), INSERM, Gustave Roussy Cancer campus, Université Paris-Saclay, Villejuif, France
| | - Kamel Mamchaoui
- Sorbonne Université, Inserm, Institut de Myologie, Centre de Recherche en Myologie, F-75013, Paris, France
| | - Nathalie Droin
- Genomic Platform, UMS AMMICA US 23 INSERM UAR 3655 CNRS, Gustave Roussy Cancer campus, Université Paris-Saclay, Villejuif, France
- UMR1287 INSERM, Gustave Roussy Cancer campus, Université Paris-Saclay, Villejuif, France
| | - Hana Raslova
- UMR1287 INSERM, Gustave Roussy Cancer campus, Université Paris-Saclay, Villejuif, France
| | - Pascal Maire
- INSERM U1016, CNRS UMR 8104, Institut Cochin, Université Paris-Cité, Paris, France
| | - Birgit Geoerger
- Department of Pediatric and Adolescent Oncology, Gustave Roussy Cancer campus, INSERM U1015, Université Paris-Saclay, Villejuif, France
| | - Iryna Pirozhkova
- UMR8126 CNRS, Gustave Roussy Cancer campus, Université Paris-Saclay, Villejuif, France.
- INSERM U1016, CNRS UMR 8104, Institut Cochin, Université Paris-Cité, Paris, France.
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Huang C, Zhong Q, Lian W, Kang T, Hu J, Lei M. Ankrd1 inhibits the FAK/Rho-GTPase/F-actin pathway by downregulating ITGA6 transcriptional to regulate myoblast functions. J Cell Physiol 2024:e31359. [PMID: 38988048 DOI: 10.1002/jcp.31359] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2024] [Revised: 05/29/2024] [Accepted: 06/04/2024] [Indexed: 07/12/2024]
Abstract
Skeletal muscle constitutes the largest percentage of tissue in the animal body and plays a pivotal role in the development of normal life activities in the organism. However, the regulation mechanism of skeletal muscle growth and development remains largely unclear. This study investigated the effects of Ankrd1 on the proliferation and differentiation of C2C12 myoblasts. Here, we identified Ankrd1 as a potential regulator of muscle cell development, and found that Ankrd1 knockdown resulted in the proliferation ability decrease but the differentiation level increase of C2C12 cells. Gene Ontology and Kyoto Encyclopedia of Genes and Genomes pathway enrichment analyzes as well as RNA-seq results showed that Ankrd1 knockdown activated focal adhesion kinase (FAK)/F-actin signal pathway with most genes significantly enriched in this pathway upregulated. The integrin subunit Itga6 promoter activity is increased when Ankrd1 knockdown, as demonstrated by a dual-luciferase reporter assay. This study revealed the molecular mechanism by which Ankrd1 knockdown enhanced FAK phosphorylation activity through the alteration of integrin subunit levels, thus activating FAK/Rho-GTPase/F-actin signal pathway, eventually promoting myoblast differentiation. Our data suggested that Ankrd1 might serve as a potential regulator of muscle cell development. Our findings provide new insights into skeletal muscle growth and development and valuable references for further study of human muscle-related diseases.
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Affiliation(s)
- Cheng Huang
- Key Laboratory of Agricultural Animal Genetics, Breeding, and Reproduction of the Ministry of Education, Key Laboratory of Swine Genetics and Breeding of the Ministry of Agriculture, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan, Hubei, China
| | - Qiqi Zhong
- Key Laboratory of Agricultural Animal Genetics, Breeding, and Reproduction of the Ministry of Education, Key Laboratory of Swine Genetics and Breeding of the Ministry of Agriculture, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan, Hubei, China
| | - Weisi Lian
- Key Laboratory of Agricultural Animal Genetics, Breeding, and Reproduction of the Ministry of Education, Key Laboratory of Swine Genetics and Breeding of the Ministry of Agriculture, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan, Hubei, China
| | - Tingting Kang
- Key Laboratory of Agricultural Animal Genetics, Breeding, and Reproduction of the Ministry of Education, Key Laboratory of Swine Genetics and Breeding of the Ministry of Agriculture, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan, Hubei, China
| | - Jinling Hu
- Key Laboratory of Agricultural Animal Genetics, Breeding, and Reproduction of the Ministry of Education, Key Laboratory of Swine Genetics and Breeding of the Ministry of Agriculture, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan, Hubei, China
| | - Minggang Lei
- Key Laboratory of Agricultural Animal Genetics, Breeding, and Reproduction of the Ministry of Education, Key Laboratory of Swine Genetics and Breeding of the Ministry of Agriculture, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan, Hubei, China
- National Engineering Research Center for Livestock, Huazhong Agricultural University, Wuhan, Hubei, China
- Department of Pig Production, The Cooperative Innovation Center for Sustainable Pig Production, Wuhan, Hubei, China
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4
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Yun SH, Lee DY, Lee J, Mariano E, Choi Y, Park J, Han D, Kim JS, Hur SJ. Current Research, Industrialization Status, and Future Perspective of Cultured Meat. Food Sci Anim Resour 2024; 44:326-355. [PMID: 38764517 PMCID: PMC11097034 DOI: 10.5851/kosfa.2024.e13] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2023] [Revised: 01/24/2024] [Accepted: 01/30/2024] [Indexed: 05/21/2024] Open
Abstract
Expectations for the industrialization of cultured meat are growing due to the increasing support from various sectors, such as the food industry, animal welfare organizations, and consumers, particularly vegetarians, but the progress of industrialization is slower than initially reported. This review analyzes the main issues concerning the industrialization of cultured meat, examines research and media reports on the development of cultured meat to date, and presents the current technology, industrialization level, and prospects for cultured meat. Currently, over 30 countries have companies industrializing cultured meat, and around 200 companies that are developing or industrializing cultured meat have been surveyed globally. By country, the United States has over 50 companies, accounting for more than 20% of the total. Acquiring animal cells, developing cell lines, improving cell proliferation, improving the efficiency of cell differentiation and muscle production, or developing cell culture media, including serum-free media, are the major research themes related to the development of cultured meat. In contrast, the development of devices, such as bioreactors, which are crucial in enabling large-scale production, is relatively understudied, and few of the many companies invested in the development of cultured meat have presented products for sale other than prototypes. In addition, because most information on key technologies is not publicly available, it is not possible to determine the level of technology in the companies, and it is surmised that the technology of cultured meat-related startups is not high. Therefore, further research and development are needed to promote the full-scale industrialization of cultured meat.
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Affiliation(s)
- Seung Hyeon Yun
- Department of Animal Science and
Technology, Chung-Ang University, Anseong 17546, Korea
| | - Da Young Lee
- Department of Animal Science and
Technology, Chung-Ang University, Anseong 17546, Korea
| | - Juhyun Lee
- Department of Animal Science and
Technology, Chung-Ang University, Anseong 17546, Korea
| | - Ermie Mariano
- Department of Animal Science and
Technology, Chung-Ang University, Anseong 17546, Korea
| | - Yeongwoo Choi
- Department of Animal Science and
Technology, Chung-Ang University, Anseong 17546, Korea
| | - Jinmo Park
- Department of Animal Science and
Technology, Chung-Ang University, Anseong 17546, Korea
| | - Dahee Han
- Department of Animal Science and
Technology, Chung-Ang University, Anseong 17546, Korea
| | - Jin Soo Kim
- Department of Animal Science and
Technology, Chung-Ang University, Anseong 17546, Korea
| | - Sun Jin Hur
- Department of Animal Science and
Technology, Chung-Ang University, Anseong 17546, Korea
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5
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Grobbelaar S, Mercier AE, van den Bout I, Durandt C, Pepper MS. Considerations for enhanced mesenchymal stromal/stem cell myogenic commitment in vitro. Clin Transl Sci 2024; 17:e13703. [PMID: 38098144 PMCID: PMC10787211 DOI: 10.1111/cts.13703] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2023] [Revised: 11/16/2023] [Accepted: 12/09/2023] [Indexed: 01/15/2024] Open
Abstract
The generation of tissue from stem cells is an alluring concept as it holds a number of potential applications in clinical therapeutics and regenerative medicine. Mesenchymal stromal/stem cells (MSCs) can be isolated from a number of different somatic sources, and have the capacity to differentiate into adipogenic, osteogenic, chondrogenic, and myogenic lineages. Although the first three have been extensively investigated, there remains a paucity of literature on the latter. This review looks at the various strategies available in vitro to enhance harvested MSC commitment and differentiation into the myogenic pathway. These include chemical inducers, myogenic-enhancing cell culture substrates, and mechanical and dynamic culturing conditions. Drawing on information from embryonic and postnatal myogenesis from somites, satellite, and myogenic progenitor cells, the mechanisms behind the chemical and mechanical induction strategies can be studied, and the sequential gene and signaling cascades can be used to monitor the progression of myogenic differentiation in the laboratory. Increased understanding of the stimuli and signaling mechanisms in the initial stages of MSC myogenic commitment will provide tools with which we can enhance their differentiation efficacy and advance the process to clinical translation.
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Affiliation(s)
- Simone Grobbelaar
- Department of Physiology, School of Medicine, Faculty of Health SciencesUniversity of PretoriaPretoriaSouth Africa
- Institute for Cellular and Molecular Medicine, Department of Immunology, and South African Medical Research Council Extramural Unit for Stem Cell Research and Therapy, School of Medicine, Faculty of Health SciencesUniversity of PretoriaPretoriaSouth Africa
| | - Anne E. Mercier
- Department of Physiology, School of Medicine, Faculty of Health SciencesUniversity of PretoriaPretoriaSouth Africa
| | - Iman van den Bout
- Department of Physiology, School of Medicine, Faculty of Health SciencesUniversity of PretoriaPretoriaSouth Africa
- Centre for Neuroendocrinology, Department of Immunology, School of Medicine, Faculty of Health SciencesUniversity of PretoriaPretoriaSouth Africa
| | - Chrisna Durandt
- Institute for Cellular and Molecular Medicine, Department of Immunology, and South African Medical Research Council Extramural Unit for Stem Cell Research and Therapy, School of Medicine, Faculty of Health SciencesUniversity of PretoriaPretoriaSouth Africa
| | - Michael S. Pepper
- Institute for Cellular and Molecular Medicine, Department of Immunology, and South African Medical Research Council Extramural Unit for Stem Cell Research and Therapy, School of Medicine, Faculty of Health SciencesUniversity of PretoriaPretoriaSouth Africa
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6
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Careccia G, Mangiavini L, Cirillo F. Regulation of Satellite Cells Functions during Skeletal Muscle Regeneration: A Critical Step in Physiological and Pathological Conditions. Int J Mol Sci 2023; 25:512. [PMID: 38203683 PMCID: PMC10778731 DOI: 10.3390/ijms25010512] [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: 10/26/2023] [Revised: 12/20/2023] [Accepted: 12/28/2023] [Indexed: 01/12/2024] Open
Abstract
Skeletal muscle regeneration is a complex process involving the generation of new myofibers after trauma, competitive physical activity, or disease. In this context, adult skeletal muscle stem cells, also known as satellite cells (SCs), play a crucial role in regulating muscle tissue homeostasis and activating regeneration. Alterations in their number or function have been associated with various pathological conditions. The main factors involved in the dysregulation of SCs' activity are inflammation, oxidative stress, and fibrosis. This review critically summarizes the current knowledge on the role of SCs in skeletal muscle regeneration. It examines the changes in the activity of SCs in three of the most common and severe muscle disorders: sarcopenia, muscular dystrophy, and cancer cachexia. Understanding the molecular mechanisms involved in their dysregulations is essential for improving current treatments, such as exercise, and developing personalized approaches to reactivate SCs.
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Affiliation(s)
- Giorgia Careccia
- Department of Biosciences, University of Milan, 20133 Milan, Italy;
| | - Laura Mangiavini
- IRCCS Istituto Ortopedico Galeazzi, 20161 Milan, Italy;
- Department of Biomedical Sciences for Health, University of Milan, 20133 Milan, Italy
| | - Federica Cirillo
- IRCCS Policlinico San Donato, 20097 San Donato Milanese, Italy
- Institute for Molecular and Translational Cardiology (IMTC), 20097 San Donato Milanese, Italy
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7
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Fu X, Zhuang CL, Hu P. Regulation of muscle stem cell fate. CELL REGENERATION (LONDON, ENGLAND) 2022; 11:40. [PMID: 36456659 PMCID: PMC9715903 DOI: 10.1186/s13619-022-00142-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/26/2022] [Accepted: 09/29/2022] [Indexed: 12/03/2022]
Abstract
Skeletal muscle plays a critical role in human health. Muscle stem cells (MuSCs) serve as the major cell type contributing to muscle regeneration by directly differentiating to mature muscle cells. MuSCs usually remain quiescent with occasionally self-renewal and are activated to enter cell cycle for proliferation followed by differentiation upon muscle injury or under pathological conditions. The quiescence maintenance, activation, proliferation, and differentiation of MuSCs are tightly regulated. The MuSC cell-intrinsic regulatory network and the microenvironments work coordinately to orchestrate the fate transition of MuSCs. The heterogeneity of MuSCs further complicates the regulation of MuSCs. This review briefly summarizes the current progress on the heterogeneity of MuSCs and the microenvironments, epigenetic, and transcription regulations of MuSCs.
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Affiliation(s)
- Xin Fu
- grid.412987.10000 0004 0630 1330Spine Center, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200092 China
| | - Cheng-le Zhuang
- grid.412538.90000 0004 0527 0050Colorectal Cancer Center/Department of Gastrointestinal Surgery, Shanghai Tenth People’s Hospital Affiliated to Tongji University, Shanghai, 200072 China
| | - Ping Hu
- grid.412987.10000 0004 0630 1330Spine Center, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200092 China ,grid.412538.90000 0004 0527 0050Colorectal Cancer Center/Department of Gastrointestinal Surgery, Shanghai Tenth People’s Hospital Affiliated to Tongji University, Shanghai, 200072 China ,Guangzhou Laboratory, Guanghzou International Bio Lsland, No. 9 XingDaoHuan Road, Guangzhou, 510005 China ,grid.9227.e0000000119573309Institute for Stem Cell and Regeneration, Chinese Academy of Sciences, Beijing, 100101 China
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8
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Porpiglia E, Blau HM. Plasticity of muscle stem cells in homeostasis and aging. Curr Opin Genet Dev 2022; 77:101999. [PMID: 36308777 DOI: 10.1016/j.gde.2022.101999] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2022] [Revised: 09/19/2022] [Accepted: 09/20/2022] [Indexed: 01/27/2023]
Abstract
We are living longer, but our healthspan has not increased. The goal of regenerative medicine is to increase quality of life through an understanding of the cellular and molecular processes that underlie effective tissue repair in order to restore damaged tissues. The drivers of muscle regeneration are the muscle stem cells that cycle between quiescent and activated states to meet tissue regenerative demands. Here we review recent findings on the role of the niche, or tissue microenvironment, in the modulation of muscle stem cell plasticity and the mechanisms responsible for the drastic loss of stem cell function with aging. These new studies unveil fundamental mechanisms of stem cell plasticity with broad relevance to other tissues and lay the foundation for the development of therapeutic strategies to boost the regenerative potential of aged muscle stem cells.
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Affiliation(s)
- Ermelinda Porpiglia
- Baxter Laboratory for Stem Cell Biology, Stanford University School of Medicine, Stanford, CA 94305, USA; Department of Biomedicine, Aarhus University, 8000 Aarhus C., Denmark. https://twitter.com/richlopez41
| | - Helen M Blau
- Baxter Laboratory for Stem Cell Biology, Stanford University School of Medicine, Stanford, CA 94305, USA.
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Gentile GM, Gamarra JR, Engels NM, Blue RE, Hoerr I, Wiedner HJ, Hinkle ER, Cote JL, Leverence E, Mills CA, Herring LE, Tan X, Giudice J. The synaptosome-associated protein 23 (SNAP23) is necessary for proper myogenesis. FASEB J 2022; 36:e22441. [PMID: 35816155 PMCID: PMC9836321 DOI: 10.1096/fj.202101627rr] [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: 10/20/2021] [Revised: 06/17/2022] [Accepted: 06/24/2022] [Indexed: 01/14/2023]
Abstract
Vesicle-mediated transport is necessary for maintaining cellular homeostasis and proper signaling. The synaptosome-associated protein 23 (SNAP23) is a member of the SNARE protein family and mediates the vesicle docking and membrane fusion steps of secretion during exocytosis. Skeletal muscle has been established as a secretory organ; however, the role of SNAP23 in the context of skeletal muscle development is still unknown. Here, we show that depletion of SNAP23 in C2C12 mouse myoblasts reduces their ability to differentiate into myotubes as a result of premature cell cycle exit and early activation of the myogenic transcriptional program. This effect is rescued when cells are seeded at a high density or when cultured in conditioned medium from wild type cells. Proteomic analysis of collected medium indicates that SNAP23 depletion leads to a misregulation of exocytosis, including decreased secretion of the insulin-like growth factor 1 (IGF1), a critical protein for muscle growth, development, and function. We further demonstrate that treatment of SNAP23-depleted cells with exogenous IGF1 rescues their myogenic capacity. We propose that SNAP23 mediates the secretion of specific proteins, such as IGF1, that are important for achieving proper differentiation of skeletal muscle cells during myogenesis. This work highlights the underappreciated role of skeletal muscle as a secretory organ and contributes to the understanding of factors necessary for myogenesis.
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Affiliation(s)
- Gabrielle M. Gentile
- Department of Cell Biology and Physiology, The University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA
- Curriculum in Genetics and Molecular Biology, The University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA
| | - Jennifer R. Gamarra
- Department of Cell Biology and Physiology, The University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA
| | - Nichlas M. Engels
- Department of Cell Biology and Physiology, The University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA
| | - R. Eric Blue
- Department of Cell Biology and Physiology, The University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA
| | - Isabel Hoerr
- Department of Cell Biology and Physiology, The University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA
| | - Hannah J. Wiedner
- Department of Cell Biology and Physiology, The University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA
- Curriculum in Genetics and Molecular Biology, The University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA
| | - Emma R. Hinkle
- Department of Cell Biology and Physiology, The University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA
- Curriculum in Genetics and Molecular Biology, The University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA
| | - Jessica L. Cote
- Department of Cell Biology and Physiology, The University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA
| | - Elise Leverence
- Department of Cell Biology and Physiology, The University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA
| | - Christine A. Mills
- UNC Proteomics Core Facility, Department of Pharmacology, The University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA
| | - Laura E. Herring
- UNC Proteomics Core Facility, Department of Pharmacology, The University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA
| | - Xianming Tan
- Department of Biostatistics, The University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA
- Lineberger Comprehensive Cancer Center, The University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA
| | - Jimena Giudice
- Department of Cell Biology and Physiology, The University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA
- Curriculum in Genetics and Molecular Biology, The University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA
- McAllister Heart Institute, The University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA
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10
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Olguín HC. The Gentle Side of the UPS: Ubiquitin-Proteasome System and the Regulation of the Myogenic Program. Front Cell Dev Biol 2022; 9:821839. [PMID: 35127730 PMCID: PMC8811165 DOI: 10.3389/fcell.2021.821839] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2021] [Accepted: 12/30/2021] [Indexed: 12/12/2022] Open
Abstract
In recent years, the ubiquitin-proteasome system (UPS) has emerged as an important regulator of stem cell function. Here we review recent findings indicating that UPS also plays critical roles in the biology of satellite cells, the muscle stem cell responsible for its maintenance and regeneration. While we focus our attention on the control of key transcriptional regulators of satellite cell function, we briefly discuss early studies suggesting the UPS participates more broadly in the regulation of satellite cell stemness and regenerative capacity.
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11
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Tributyrin, a Butyrate Pro-Drug, Primes Satellite Cells for Differentiation by Altering the Epigenetic Landscape. Cells 2021; 10:cells10123475. [PMID: 34943981 PMCID: PMC8700657 DOI: 10.3390/cells10123475] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2021] [Revised: 11/29/2021] [Accepted: 12/07/2021] [Indexed: 01/07/2023] Open
Abstract
Satellite cells (SC) are a population of muscle resident stem cells that are responsible for postnatal muscle growth and repair. With investigation into the genomic regulation of SC fate, the role of the epigenome in governing SC myogenesis is becoming clearer. Histone deacetylase (HDAC) inhibitors have been demonstrated to be effective at enhancing the myogenic program of SC, but their role in altering the epigenetic landscape of SC remains undetermined. Our objective was to determine how an HDAC inhibitor, butyrate, promotes myogenic differentiation. SC from tributyrin treated neonatal piglets showed a decrease relative to SC from control animals in the expression of enhance of zeste homologue-2 (EZH2), a chromatin modifier, ex vivo. Chromatin Immunoprecipitation-Sequencing (ChIP-Seq) analysis of SC isolated from tributyrin treated pigs showed a global reduction of the tri-methylation of lysine 27 of histone H3 (H3K27me3) repressive chromatin mark. To determine if reductions in EZH2 was the primary mechanism through which butyrate affects SC behavior, SC were transfected with siRNA targeting EZH2, treated with 0.5 mM butyrate, or both. Treatment with butyrate reduced paired-box-7 (Pax7) and myogenic differentiation-1 (MyoD) gene expression, while siRNA caused reductions in EZH2 had no effect on their expression. EZH2 depletion did result in an increase in differentiating SC, but not in myotube hypertrophy. These results indicate that while EZH2 reduction may force myogenic differentiation, butyrate may operate through a parallel mechanism to enhance the myogenic program.
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12
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Fu X, He Q, Tao Y, Wang M, Wang W, Wang Y, Yu QC, Zhang F, Zhang X, Chen YG, Gao D, Hu P, Hui L, Wang X, Zeng YA. Recent advances in tissue stem cells. SCIENCE CHINA. LIFE SCIENCES 2021; 64:1998-2029. [PMID: 34865207 DOI: 10.1007/s11427-021-2007-8] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/07/2021] [Accepted: 06/08/2021] [Indexed: 12/13/2022]
Abstract
Stem cells are undifferentiated cells capable of self-renewal and differentiation, giving rise to specialized functional cells. Stem cells are of pivotal importance for organ and tissue development, homeostasis, and injury and disease repair. Tissue-specific stem cells are a rare population residing in specific tissues and present powerful potential for regeneration when required. They are usually named based on the resident tissue, such as hematopoietic stem cells and germline stem cells. This review discusses the recent advances in stem cells of various tissues, including neural stem cells, muscle stem cells, liver progenitors, pancreatic islet stem/progenitor cells, intestinal stem cells, and prostate stem cells, and the future perspectives for tissue stem cell research.
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Affiliation(s)
- Xin Fu
- Xinhua Hospital affiliated to Shanghai Jiaotong University School of Medicine, Shanghai, 200233, China
| | - Qiang He
- State Key Laboratory of Cell Biology, CAS Center for Excellence in Molecular Cell Science, Shanghai Institute of Biochemistry and Cell Biology, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Shanghai, 200031, China
| | - Yu Tao
- State Key Laboratory of Cell Biology, CAS Center for Excellence in Molecular Cell Science, Shanghai Institute of Biochemistry and Cell Biology, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Shanghai, 200031, China
| | - Mengdi Wang
- State Key Laboratory of Brain and Cognitive Science, CAS Center for Excellence in Brain Science and Intelligence Technology, Bioland Laboratory (Guangzhou), Institute of Biophysics, Chinese Academy of Sciences, Beijing, 100101, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Wei Wang
- State Key Laboratory of Brain and Cognitive Science, CAS Center for Excellence in Brain Science and Intelligence Technology, Bioland Laboratory (Guangzhou), Institute of Biophysics, Chinese Academy of Sciences, Beijing, 100101, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Yalong Wang
- The State Key Laboratory of Membrane Biology, Tsinghua-Peking Center for Life Sciences, School of Life Sciences, Tsinghua University, Beijing, 100084, China
| | - Qing Cissy Yu
- State Key Laboratory of Cell Biology, CAS Center for Excellence in Molecular Cell Science, Shanghai Institute of Biochemistry and Cell Biology, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Shanghai, 200031, China
| | - Fang Zhang
- State Key Laboratory of Cell Biology, CAS Center for Excellence in Molecular Cell Science, Shanghai Institute of Biochemistry and Cell Biology, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Shanghai, 200031, China
| | - Xiaoyu Zhang
- State Key Laboratory of Cell Biology, CAS Center for Excellence in Molecular Cell Science, Shanghai Institute of Biochemistry and Cell Biology, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Shanghai, 200031, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Ye-Guang Chen
- The State Key Laboratory of Membrane Biology, Tsinghua-Peking Center for Life Sciences, School of Life Sciences, Tsinghua University, Beijing, 100084, China.
- Max-Planck Center for Tissue Stem Cell Research and Regenerative Medicine, Guangzhou Regenerative Medicine and Health Guangdong Laboratory, Guangzhou, 510530, China.
| | - Dong Gao
- State Key Laboratory of Cell Biology, CAS Center for Excellence in Molecular Cell Science, Shanghai Institute of Biochemistry and Cell Biology, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Shanghai, 200031, China.
- University of Chinese Academy of Sciences, Beijing, 100049, China.
- Institute for Stem Cell and Regeneration, Chinese Academy of Sciences, Beijing, 100101, China.
| | - Ping Hu
- State Key Laboratory of Cell Biology, CAS Center for Excellence in Molecular Cell Science, Shanghai Institute of Biochemistry and Cell Biology, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Shanghai, 200031, China.
- Xinhua Hospital affiliated to Shanghai Jiaotong University School of Medicine, Shanghai, 200233, China.
- Max-Planck Center for Tissue Stem Cell Research and Regenerative Medicine, Guangzhou Regenerative Medicine and Health Guangdong Laboratory, Guangzhou, 510530, China.
- Institute for Stem Cell and Regeneration, Chinese Academy of Sciences, Beijing, 100101, China.
- Bio-Research Innovation Center, Shanghai Institute of Biochemistry and Cell Biology, Suzhou, 215121, China.
| | - Lijian Hui
- State Key Laboratory of Cell Biology, CAS Center for Excellence in Molecular Cell Science, Shanghai Institute of Biochemistry and Cell Biology, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Shanghai, 200031, China.
- Institute for Stem Cell and Regeneration, Chinese Academy of Sciences, Beijing, 100101, China.
- Bio-Research Innovation Center, Shanghai Institute of Biochemistry and Cell Biology, Suzhou, 215121, China.
- School of Life Science and Technology, ShanghaiTech University, Shanghai, 201210, China.
- School of Life Science, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Hangzhou, 310024, China.
| | - Xiaoqun Wang
- State Key Laboratory of Brain and Cognitive Science, CAS Center for Excellence in Brain Science and Intelligence Technology, Bioland Laboratory (Guangzhou), Institute of Biophysics, Chinese Academy of Sciences, Beijing, 100101, China.
- University of Chinese Academy of Sciences, Beijing, 100049, China.
- Institute for Stem Cell and Regeneration, Chinese Academy of Sciences, Beijing, 100101, China.
- Advanced Innovation Center for Human Brain Protection, Beijing Institute for Brain Disorders, Capital Medical University, Beijing, 100069, China.
| | - Yi Arial Zeng
- State Key Laboratory of Cell Biology, CAS Center for Excellence in Molecular Cell Science, Shanghai Institute of Biochemistry and Cell Biology, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Shanghai, 200031, China.
- Bio-Research Innovation Center, Shanghai Institute of Biochemistry and Cell Biology, Suzhou, 215121, China.
- School of Life Science, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Hangzhou, 310024, China.
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13
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Control of satellite cell function in muscle regeneration and its disruption in ageing. Nat Rev Mol Cell Biol 2021; 23:204-226. [PMID: 34663964 DOI: 10.1038/s41580-021-00421-2] [Citation(s) in RCA: 148] [Impact Index Per Article: 49.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/01/2021] [Indexed: 12/19/2022]
Abstract
Skeletal muscle contains a designated population of adult stem cells, called satellite cells, which are generally quiescent. In homeostasis, satellite cells proliferate only sporadically and usually by asymmetric cell division to replace myofibres damaged by daily activity and maintain the stem cell pool. However, satellite cells can also be robustly activated upon tissue injury, after which they undergo symmetric divisions to generate new stem cells and numerous proliferating myoblasts that later differentiate to muscle cells (myocytes) to rebuild the muscle fibre, thereby supporting skeletal muscle regeneration. Recent discoveries show that satellite cells have a great degree of population heterogeneity, and that their cell fate choices during the regeneration process are dictated by both intrinsic and extrinsic mechanisms. Extrinsic cues come largely from communication with the numerous distinct stromal cell types in their niche, creating a dynamically interactive microenvironment. This Review discusses the role and regulation of satellite cells in skeletal muscle homeostasis and regeneration. In particular, we highlight the cell-intrinsic control of quiescence versus activation, the importance of satellite cell-niche communication, and deregulation of these mechanisms associated with ageing. The increasing understanding of how satellite cells are regulated will help to advance muscle regeneration and rejuvenation therapies.
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14
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Maldonado M, Chen J, Lujun Y, Duan H, Raja MA, Qu T, Huang T, Gu J, Zhong Y. The consequences of a high-calorie diet background before calorie restriction on skeletal muscles in a mouse model. Aging (Albany NY) 2021; 13:16834-16858. [PMID: 34166224 PMCID: PMC8266348 DOI: 10.18632/aging.203237] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2020] [Accepted: 05/31/2021] [Indexed: 02/05/2023]
Abstract
The beneficial effects of calorie restriction (CR) are numerous. However, there is no scientific evidence about how a high-calorie diet (HCD) background influences the mechanisms underlying CR on skeletal muscles in an experimental mouse model. Herein we present empirical evidence showing significant interactions between HCD (4 months) and CR (3 months). Pectoralis major and quadriceps femoris vastus medialis, in the experimental and control groups, displayed metabolic and physiologic heterogeneity and remarkable plasticity, according to the dietary interventions. HCD-CR not only altered genetic activation patterns of satellite SC markers but also boosted the expression of myogenic regulatory factors and key activators of mitochondrial biogenesis, which in turn were also associated with metabolic fiber transition. Our data prompt us to theorize that the effects of CR may vary according to the physiologic, metabolic, and genetic peculiarities of the skeletal muscle described here and that INTM/IM lipid infiltration and tissue-specific fuel-energy status (demand/supply) both hold dependent-interacting roles with other key anti-aging mechanisms triggered by CR. Systematic integration of an HCD with CR appears to bring potential benefits for skeletal muscle function and energy metabolism. However, at this stage of our research, an optimal balance between the two dietary conditions, where anti-aging effects can be accomplished, is under intensive investigation in combination with other tissues and organs at different levels of organization within the organ system.
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Affiliation(s)
- Martin Maldonado
- Chengdu Jinxin Institute of Reproductive Medicine and Genetics, Chengdu Jinjiang Hospital for Maternal and Child Health Care, Chengdu 610066, China
| | - Jianying Chen
- Chengdu Jinxin Institute of Reproductive Medicine and Genetics, Chengdu Jinjiang Hospital for Maternal and Child Health Care, Chengdu 610066, China
| | - Yang Lujun
- Translational Medical Center, Second Affiliated Hospital of Shantou University Medical College, Shantou 515041, Guangdong, P.R. China
| | - Huiqin Duan
- Chengdu Jinxin Institute of Reproductive Medicine and Genetics, Chengdu Jinjiang Hospital for Maternal and Child Health Care, Chengdu 610066, China
| | - Mazhar Ali Raja
- Chengdu Jinxin Institute of Reproductive Medicine and Genetics, Chengdu Jinjiang Hospital for Maternal and Child Health Care, Chengdu 610066, China
| | - Ting Qu
- Chengdu Jinxin Institute of Reproductive Medicine and Genetics, Chengdu Jinjiang Hospital for Maternal and Child Health Care, Chengdu 610066, China
| | - Tianhua Huang
- Chengdu Jinxin Institute of Reproductive Medicine and Genetics, Chengdu Jinjiang Hospital for Maternal and Child Health Care, Chengdu 610066, China
| | - Jiang Gu
- Chengdu Jinxin Institute of Reproductive Medicine and Genetics, Chengdu Jinjiang Hospital for Maternal and Child Health Care, Chengdu 610066, China
| | - Ying Zhong
- Chengdu Jinxin Institute of Reproductive Medicine and Genetics, Chengdu Jinjiang Hospital for Maternal and Child Health Care, Chengdu 610066, China
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15
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Zhang Y, Lahmann I, Baum K, Shimojo H, Mourikis P, Wolf J, Kageyama R, Birchmeier C. Oscillations of Delta-like1 regulate the balance between differentiation and maintenance of muscle stem cells. Nat Commun 2021; 12:1318. [PMID: 33637744 PMCID: PMC7910593 DOI: 10.1038/s41467-021-21631-4] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2020] [Accepted: 02/04/2021] [Indexed: 02/07/2023] Open
Abstract
Cell-cell interactions mediated by Notch are critical for the maintenance of skeletal muscle stem cells. However, dynamics, cellular source and identity of functional Notch ligands during expansion of the stem cell pool in muscle growth and regeneration remain poorly characterized. Here we demonstrate that oscillating Delta-like 1 (Dll1) produced by myogenic cells is an indispensable Notch ligand for self-renewal of muscle stem cells in mice. Dll1 expression is controlled by the Notch target Hes1 and the muscle regulatory factor MyoD. Consistent with our mathematical model, our experimental analyses show that Hes1 acts as the oscillatory pacemaker, whereas MyoD regulates robust Dll1 expression. Interfering with Dll1 oscillations without changing its overall expression level impairs self-renewal, resulting in premature differentiation of muscle stem cells during muscle growth and regeneration. We conclude that the oscillatory Dll1 input into Notch signaling ensures the equilibrium between self-renewal and differentiation in myogenic cell communities.
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Affiliation(s)
- Yao Zhang
- Developmental Biology/Signal Transduction, Max-Delbrück-Center for Molecular Medicine, Berlin, Germany.
| | - Ines Lahmann
- Developmental Biology/Signal Transduction, Max-Delbrück-Center for Molecular Medicine, Berlin, Germany
| | - Katharina Baum
- Mathematical Modelling of Cellular Processes, Max-Delbrück-Center for Molecular Medicine, Berlin, Germany
- Hasso Plattner Institute, Digital Engineering Faculty, University of Potsdam, Potsdam, Germany
| | - Hiromi Shimojo
- Institute for Frontier Life and Medical Sciences, Kyoto University, Kyoto, Japan
- Graduate School of Frontier Biosciences, Osaka University, Osaka, Japan
| | | | - Jana Wolf
- Mathematical Modelling of Cellular Processes, Max-Delbrück-Center for Molecular Medicine, Berlin, Germany
- Department of Mathematics and Computer Science, Free University Berlin, Berlin, Germany
| | - Ryoichiro Kageyama
- Institute for Frontier Life and Medical Sciences, Kyoto University, Kyoto, Japan
| | - Carmen Birchmeier
- Developmental Biology/Signal Transduction, Max-Delbrück-Center for Molecular Medicine, Berlin, Germany.
- Neurowissenschaftliches Forschungzentrum, NeuroCure Cluster of Excellence, Charité-Universitätsmedizin Berlin, Berlin, Germany.
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16
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Guan F, Wu J, Li J, Liu S, Weng Y, Chen T, Yang T, Fang K. RETRACTED ARTICLE: Inducible nitric oxide synthase promotes differentiation of satellite cells and prevents stress urinary incontinence via HGF-mediated p38/MAPK signaling. World J Urol 2021; 39:633. [PMID: 32556674 DOI: 10.1007/s00345-020-03289-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2020] [Accepted: 05/28/2020] [Indexed: 01/06/2023] Open
Affiliation(s)
- Fei Guan
- Department of Urology, The 2nd Hospital of Kunming Medical University, No. 374, Dianmian AvenueYunnan Province, Kunming, 650101, People's Republic of China
- The 4th Hospital of Changde, Changde, 415000, People's Republic of China
| | - Jing Wu
- Department of Biochemistry and Molecular Biology, The Primary Medicine School of Kunming Medical University, Kunming, 650500, People's Republic of China
| | - Jiang Li
- Department of Urology, The 1st Hospital of Qujing, Qujing, 650500, People's Republic of China
| | - Shang Liu
- Department of Urology, The 2nd Hospital of Kunming Medical University, No. 374, Dianmian AvenueYunnan Province, Kunming, 650101, People's Republic of China
| | - Yuting Weng
- Department of Urology, The 2nd Hospital of Kunming Medical University, No. 374, Dianmian AvenueYunnan Province, Kunming, 650101, People's Republic of China
| | - Tao Chen
- Department of Urology, The 2nd Hospital of Kunming Medical University, No. 374, Dianmian AvenueYunnan Province, Kunming, 650101, People's Republic of China
| | - Tongxin Yang
- Department of Urology, The 2nd Hospital of Kunming Medical University, No. 374, Dianmian AvenueYunnan Province, Kunming, 650101, People's Republic of China
| | - Kewei Fang
- Department of Urology, The 2nd Hospital of Kunming Medical University, No. 374, Dianmian AvenueYunnan Province, Kunming, 650101, People's Republic of China.
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17
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Wang L, Wang Y, Xiang Y, Ma J, Zhang H, Dai J, Hou Y, Yang Y, Ma J, Li H. An In Vitro Study on Extracellular Vesicles From Adipose-Derived Mesenchymal Stem Cells in Protecting Stress Urinary Incontinence Through MicroRNA-93/F3 Axis. Front Endocrinol (Lausanne) 2021; 12:693977. [PMID: 34484115 PMCID: PMC8415505 DOI: 10.3389/fendo.2021.693977] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/13/2021] [Accepted: 07/12/2021] [Indexed: 11/18/2022] Open
Abstract
Since the potential roles of extracellular vesicles secreted by adipose-derived mesenchymal stem cells (ADSCs) are not well understood in collagen metabolism, the purpose of this research was to evaluate the effects of ADSCs-extracellular vesicles in stress urinary incontinence and the regulatory mechanism of delivered microRNA-93 (miR-93). ADSCs were isolated and cultured, and ADSCs-extracellular vesicles were extracted and identified. Stress urinary incontinence primary fibroblasts or satellite cells were treated with ADSCs-extracellular vesicles to detect the expression of Elastin, Collagen I, and Collagen III in fibroblasts and Pax7 and MyoD in satellite cells. After transfecting ADSCs with miR-93 mimics or inhibitors, extracellular vesicles were isolated and treated with stress urinary incontinence primary fibroblasts or satellite cells to observe cell function changes. The online prediction and luciferase activity assay confirmed the targeting relationship between miR-93 and coagulation factor III (F3). The rescue experiment verified the role of ADSCs-extracellular vesicles carrying miR-93 in stress urinary incontinence primary fibroblasts and satellite cells by targeting F3. ADSCs-extracellular vesicles treatment upregulated expression of Elastin, Collagen I, and Collagen III in stress urinary incontinence primary fibroblasts and expression of Pax7 and MyoD in stress urinary incontinence primary satellite cells. miR-93 expression was increased in stress urinary incontinence primary fibroblasts or satellite cells treated with ADSCs-extracellular vesicles. Extracellular vesicles secreted by ADSCs could deliver miR-93 to fibroblasts and then negatively regulate F3 expression; ADSCs-extracellular vesicles could reverse the effect of F3 on extracellular matrix remodeling in stress urinary incontinence fibroblasts. miR-93 expression was also increased in stress urinary incontinence primary satellite cells treated by ADSCs-extracellular vesicles. Extracellular vesicles secreted by ADSCs were delivered to satellite cells through miR-93, which directly targets F3 expression and upregulates Pax7 and MyoD expression in satellite cells. Our study indicates that miR-93 delivered by ADSCs-extracellular vesicles could regulate extracellular matrix remodeling of stress urinary incontinence fibroblasts and promote activation of stress urinary incontinence satellite cells through targeting F3.
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18
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Lala-Tabbert N, AlSudais H, Marchildon F, Fu D, Wiper-Bergeron N. CCAAT/enhancer-binding protein beta promotes muscle stem cell quiescence through regulation of quiescence-associated genes. Stem Cells 2020; 39:345-357. [PMID: 33326659 DOI: 10.1002/stem.3319] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2020] [Accepted: 11/24/2020] [Indexed: 12/15/2022]
Abstract
Regeneration of skeletal muscle depends on resident muscle stem cells called satellite cells that in healthy, uninjured muscle remain quiescent (noncycling). After activation and expansion of satellite cells postinjury, satellite cell numbers return to uninjured levels and return to mitotic quiescence. Here, we show that the transcription factor CCAAT/enhancer-binding protein beta (C/EBPβ) is required to maintain quiescence of satellite cells in uninjured muscle. We show that C/EBPβ is expressed in quiescent satellite cells in vivo and upregulated in noncycling myoblasts in vitro. Loss of C/EBPβ in satellite cells promotes their premature exit from quiescence resulting in spontaneous activation and differentiation of the stem cell pool. Forced expression of C/EBPβ in myoblasts inhibits proliferation by upregulation of 28 quiescence-associated genes. Furthermore, we find that caveolin-1 is a direct transcriptional target of C/EBPβ and is required for cell cycle exit in muscle satellite cells expressing C/EBPβ. The induction of mitotic quiescence is considered necessary for the long-term maintenance of adult stem cell populations with dysregulation driving increased differentiation of progenitors and depletion of the stem cell pool. Our findings place C/EBPβ as an important transcriptional regulator of muscle satellite cell quiescence.
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Affiliation(s)
- Neena Lala-Tabbert
- Department of Cellular and Molecular Medicine, Faculty of Medicine, University of Ottawa, Ottawa, Ontario, Canada.,Apoptosis Research Centre, Children's Hospital of Eastern Ontario Research Institute, Ottawa, Ontario, Canada
| | - Hamood AlSudais
- Graduate Program in Cellular and Molecular Medicine, Department of Cellular and Molecular Medicine, Faculty of Medicine, University of Ottawa, Ottawa, Ontario, Canada
| | - François Marchildon
- Graduate Program in Cellular and Molecular Medicine, Department of Cellular and Molecular Medicine, Faculty of Medicine, University of Ottawa, Ottawa, Ontario, Canada.,Laboratory of Molecular Metabolism, The Rockefeller University, New York, New York, USA
| | - Dechen Fu
- Department of Cellular and Molecular Medicine, Faculty of Medicine, University of Ottawa, Ottawa, Ontario, Canada.,Cleveland Clinic, Lerner Research Institute, Cleveland, Ohio, USA
| | - Nadine Wiper-Bergeron
- Department of Cellular and Molecular Medicine, Faculty of Medicine, University of Ottawa, Ottawa, Ontario, Canada
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19
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Brusa R, Magri F, Bresolin N, Comi GP, Corti S. Noncoding RNAs in Duchenne and Becker muscular dystrophies: role in pathogenesis and future prognostic and therapeutic perspectives. Cell Mol Life Sci 2020; 77:4299-4313. [PMID: 32350552 PMCID: PMC11105074 DOI: 10.1007/s00018-020-03537-4] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2019] [Revised: 04/16/2020] [Accepted: 04/21/2020] [Indexed: 12/14/2022]
Abstract
Noncoding RNAs (ncRNAs), such as miRNAs and long noncoding RNAs, are key regulators of gene expression at the post-transcriptional level and represent promising therapeutic targets and biomarkers for several human diseases, including Duchenne and Becker muscular dystrophies (DMD/BMD). A role for ncRNAs in the pathogenesis of muscular dystrophies has been suggested, even if it is still incompletely understood. Here, we discuss current progress leading towards the clinical utility of ncRNAs for DMD/BMD. Long and short noncoding RNAs are differentially expressed in DMD/BMD and have a mechanism of action via targeting mRNAs. A subset of muscle-enriched miRNAs, the so-called myomiRs (miR-1, miR-133, and miR-206), are increased in the serum of patients with DMD and in dystrophin-defective animal models. Interestingly, myomiRs might be used as biomarkers, given that their levels can be corrected after dystrophin restoration in dystrophic mice. Remarkably, further evidence demonstrates that ncRNAs also play a role in dystrophin expression; thus, their modulations might represent a potential therapeutic strategy with the aim of upregulating the dystrophin protein in combination with other oligonucleotides/gene therapy approaches.
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Affiliation(s)
- Roberta Brusa
- Neurology Unit, Foundation IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Francesca Magri
- Neurology Unit, Foundation IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Nereo Bresolin
- Neurology Unit, Foundation IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
- Dino Ferrari Centre, Neuroscience Section, Department of Pathophysiology and Transplantation (DEPT), University of Milan, Milan, Italy
| | - Giacomo Pietro Comi
- Dino Ferrari Centre, Neuroscience Section, Department of Pathophysiology and Transplantation (DEPT), University of Milan, Milan, Italy
- Neuromuscular and Rare Diseases Unit, Foundation IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Stefania Corti
- Neurology Unit, Foundation IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy.
- Dino Ferrari Centre, Neuroscience Section, Department of Pathophysiology and Transplantation (DEPT), University of Milan, Milan, Italy.
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20
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Kimmel JC, Hwang AB, Scaramozza A, Marshall WF, Brack AS. Aging induces aberrant state transition kinetics in murine muscle stem cells. Development 2020; 147:dev183855. [PMID: 32198156 PMCID: PMC7225128 DOI: 10.1242/dev.183855] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2019] [Accepted: 02/17/2020] [Indexed: 12/12/2022]
Abstract
Murine muscle stem cells (MuSCs) experience a transition from quiescence to activation that is required for regeneration, but it remains unknown if the trajectory and dynamics of activation change with age. Here, we use time-lapse imaging and single cell RNA-seq to measure activation trajectories and rates in young and aged MuSCs. We find that the activation trajectory is conserved in aged cells, and we develop effective machine-learning classifiers for cell age. Using cell-behavior analysis and RNA velocity, we find that activation kinetics are delayed in aged MuSCs, suggesting that changes in stem cell dynamics may contribute to impaired stem cell function with age. Intriguingly, we also find that stem cell activation appears to be a random walk-like process, with frequent reversals, rather than a continuous linear progression. These results support a view of the aged stem cell phenotype as a combination of differences in the location of stable cell states and differences in transition rates between them.
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Affiliation(s)
- Jacob C Kimmel
- Eli and Edythe Broad Center for Regenerative Medicine, University of California, San Francisco, 35 Medical Center Way, San Francisco, CA 94143, USA
- Center for Cellular Construction, University of California, San Francisco, San Francisco, CA 94143, USA
- Biochemistry & Biophysics, University of California, San Francisco, San Francisco, CA 94143, USA
| | - Ara B Hwang
- Eli and Edythe Broad Center for Regenerative Medicine, University of California, San Francisco, 35 Medical Center Way, San Francisco, CA 94143, USA
| | - Annarita Scaramozza
- Eli and Edythe Broad Center for Regenerative Medicine, University of California, San Francisco, 35 Medical Center Way, San Francisco, CA 94143, USA
| | - Wallace F Marshall
- Center for Cellular Construction, University of California, San Francisco, San Francisco, CA 94143, USA
- Biochemistry & Biophysics, University of California, San Francisco, San Francisco, CA 94143, USA
| | - Andrew S Brack
- Eli and Edythe Broad Center for Regenerative Medicine, University of California, San Francisco, 35 Medical Center Way, San Francisco, CA 94143, USA
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21
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Elsaeid Elnour I, Dong D, Wang X, Zhansaya T, Khan R, Jian W, Jie C, Chen H. Bta-miR-885 promotes proliferation and inhibits differentiation of myoblasts by targeting MyoD1. J Cell Physiol 2020; 235:6625-6636. [PMID: 31985035 DOI: 10.1002/jcp.29559] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2019] [Accepted: 01/03/2020] [Indexed: 12/29/2022]
Abstract
The proliferation and differentiation of myoblasts are essential for the regeneration and development of skeletal muscles. However, the process of skeletal muscle development in cattle is complex and needs to be further investigated. The microRNAs (miRNAs) are endogenous, small noncoding RNAs that play a critical role during skeletal muscle development. In this study, we evaluated the function of miR-885 in muscle development in cattle. The results found that the expression of miR-885 was gradually upregulated during myoblast proliferation, whereas progressively downregulated during myoblast differentiation. The overexpression of miR-885 promoted cell proliferation of myoblast in cattle. Moreover, we further noted that the overexpression miR-885 triggered the expression level of various marker genes involved in cell proliferation, including proliferating cell nuclear antigen (PCNA), cyclin-dependent kinase 2 (CDK2), and cyclin B1 (CCNB1). Furthermore, it was observed that overexpression of miR-885 inhibited cell differentiation, and significantly decreased messenger RNA and protein expression levels of myogenic differentiation 1 (MyoD1) and myogenin (MyoG) in primary bovine myoblasts. Moreover, the miR-885 inhibitor revealed that miR-885 inhibited cell proliferation and promoted cell differentiation. In addition, the overexpression of miR-885 markedly decreased MyoD1 expression in primary bovine myoblasts. The luciferase reporter assay, quantitative real-time polymerase chain reaction, and western blot (WB) further indicated that miR-885 directly binding to 3' UTR of MyoD1 gene during transcriptional regulation. Conclusively, these results signified that miR-885 could be critical for the proliferation and differentiation in primary bovine myoblast cells by targeting the MyoD1 gene in cattle.
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Affiliation(s)
- Ibrahim Elsaeid Elnour
- Key laboratory of Animal Genetics, Breeding and Reproduction of Shaanxi Province, College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi, China.,Faculty of Veterinary Science, University of Nyala, Nyala, Sudan
| | - Dong Dong
- Key laboratory of Animal Genetics, Breeding and Reproduction of Shaanxi Province, College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi, China
| | - Xiaogang Wang
- Key laboratory of Animal Genetics, Breeding and Reproduction of Shaanxi Province, College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi, China
| | - Toremurat Zhansaya
- Key laboratory of Animal Genetics, Breeding and Reproduction of Shaanxi Province, College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi, China
| | - Rajwali Khan
- Key laboratory of Animal Genetics, Breeding and Reproduction of Shaanxi Province, College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi, China
| | - Wang Jian
- Key laboratory of Animal Genetics, Breeding and Reproduction of Shaanxi Province, College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi, China
| | - Cheng Jie
- Key laboratory of Animal Genetics, Breeding and Reproduction of Shaanxi Province, College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi, China
| | - Hong Chen
- Key laboratory of Animal Genetics, Breeding and Reproduction of Shaanxi Province, College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi, China
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22
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Buchwalter A, Schulte R, Tsai H, Capitanio J, Hetzer M. Selective clearance of the inner nuclear membrane protein emerin by vesicular transport during ER stress. eLife 2019; 8:e49796. [PMID: 31599721 PMCID: PMC6802967 DOI: 10.7554/elife.49796] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2019] [Accepted: 10/09/2019] [Indexed: 12/17/2022] Open
Abstract
The inner nuclear membrane (INM) is a subdomain of the endoplasmic reticulum (ER) that is gated by the nuclear pore complex. It is unknown whether proteins of the INM and ER are degraded through shared or distinct pathways in mammalian cells. We applied dynamic proteomics to profile protein half-lives and report that INM and ER residents turn over at similar rates, indicating that the INM's unique topology is not a barrier to turnover. Using a microscopy approach, we observed that the proteasome can degrade INM proteins in situ. However, we also uncovered evidence for selective, vesicular transport-mediated turnover of a single INM protein, emerin, that is potentiated by ER stress. Emerin is rapidly cleared from the INM by a mechanism that requires emerin's LEM domain to mediate vesicular trafficking to lysosomes. This work demonstrates that the INM can be dynamically remodeled in response to environmental inputs.
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Affiliation(s)
- Abigail Buchwalter
- Cardiovascular Research InstituteUniversity of California, San FranciscoSan FranciscoUnited States
- Department of PhysiologyUniversity of California, San FranciscoSan FranciscoUnited States
- Chan Zuckerberg BiohubSan FranciscoUnited States
| | - Roberta Schulte
- The Salk Institute for Biological StudiesLa JollaUnited States
| | - Hsiao Tsai
- The Salk Institute for Biological StudiesLa JollaUnited States
| | | | - Martin Hetzer
- The Salk Institute for Biological StudiesLa JollaUnited States
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23
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Forcina L, Miano C, Pelosi L, Musarò A. An Overview about the Biology of Skeletal Muscle Satellite Cells. Curr Genomics 2019; 20:24-37. [PMID: 31015789 PMCID: PMC6446479 DOI: 10.2174/1389202920666190116094736] [Citation(s) in RCA: 80] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2018] [Revised: 12/19/2018] [Accepted: 01/08/2019] [Indexed: 12/14/2022] Open
Abstract
The peculiar ability of skeletal muscle tissue to operate adaptive changes during post-natal de-velopment and adulthood has been associated with the existence of adult somatic stem cells. Satellite cells, occupying an exclusive niche within the adult muscle tissue, are considered bona fide stem cells with both stem-like properties and myogenic activities. Indeed, satellite cells retain the capability to both maintain the quiescence in uninjured muscles and to be promptly activated in response to growth or re-generative signals, re-engaging the cell cycle. Activated cells can undergo myogenic differentiation or self-renewal moving back to the quiescent state. Satellite cells behavior and their fate decision are finely controlled by mechanisms involving both cell-autonomous and external stimuli. Alterations in these regu-latory networks profoundly affect muscle homeostasis and the dynamic response to tissue damage, con-tributing to the decline of skeletal muscle that occurs under physio-pathologic conditions. Although the clear myogenic activity of satellite cells has been described and their pivotal role in muscle growth and regeneration has been reported, a comprehensive picture of inter-related mechanisms guiding muscle stem cell activity has still to be defined. Here, we reviewed the main regulatory networks determining satellite cell behavior. In particular, we focused on genetic and epigenetic mechanisms underlining satel-lite cell maintenance and commitment. Besides intrinsic regulations, we reported current evidences about the influence of environmental stimuli, derived from other cell populations within muscle tissue, on satel-lite cell biology.
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Affiliation(s)
- Laura Forcina
- DAHFMO-Unit of Histology and Medical Embryology, Sapienza University of Rome, Laboratory Affiliated to Istituto Pasteur Italia - Fondazione Cenci Bolognetti, Via A. Scarpa, 14 Rome 00161, Italy
| | - Carmen Miano
- DAHFMO-Unit of Histology and Medical Embryology, Sapienza University of Rome, Laboratory Affiliated to Istituto Pasteur Italia - Fondazione Cenci Bolognetti, Via A. Scarpa, 14 Rome 00161, Italy
| | - Laura Pelosi
- DAHFMO-Unit of Histology and Medical Embryology, Sapienza University of Rome, Laboratory Affiliated to Istituto Pasteur Italia - Fondazione Cenci Bolognetti, Via A. Scarpa, 14 Rome 00161, Italy
| | - Antonio Musarò
- DAHFMO-Unit of Histology and Medical Embryology, Sapienza University of Rome, Laboratory Affiliated to Istituto Pasteur Italia - Fondazione Cenci Bolognetti, Via A. Scarpa, 14 Rome 00161, Italy
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24
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Toyama BH, Arrojo E Drigo R, Lev-Ram V, Ramachandra R, Deerinck TJ, Lechene C, Ellisman MH, Hetzer MW. Visualization of long-lived proteins reveals age mosaicism within nuclei of postmitotic cells. J Cell Biol 2018; 218:433-444. [PMID: 30552100 PMCID: PMC6363465 DOI: 10.1083/jcb.201809123] [Citation(s) in RCA: 58] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2018] [Revised: 11/12/2018] [Accepted: 11/26/2018] [Indexed: 12/26/2022] Open
Abstract
Toyama et al. monitor the replacement of long-lived components of nuclear pore complexes (NPCs) and nucleosomes in postmitotic cells. They describe age mosaicism at the level of chromatin organization and find that NPCs are maintained by piecemeal replacement in postmitotic nondividing cells but by entire complex replacement in an ESCRT-dependent manner in nondividing, starved quiescent cells. Many adult tissues contain postmitotic cells as old as the host organism. The only organelle that does not turn over in these cells is the nucleus, and its maintenance represents a formidable challenge, as it harbors regulatory proteins that persist throughout adulthood. Here we developed strategies to visualize two classes of such long-lived proteins, histones and nucleoporins, to understand the function of protein longevity in nuclear maintenance. Genome-wide mapping of histones revealed specific enrichment of long-lived variants at silent gene loci. Interestingly, nuclear pores are maintained by piecemeal replacement of subunits, resulting in mosaic complexes composed of polypeptides with vastly different ages. In contrast, nondividing quiescent cells remove old nuclear pores in an ESCRT-dependent manner. Our findings reveal distinct molecular strategies of nuclear maintenance, linking lifelong protein persistence to gene regulation and nuclear integrity.
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Affiliation(s)
- Brandon H Toyama
- Molecular and Cell Biology Laboratory, The Salk Institute for Biological Studies, La Jolla, CA
| | - Rafael Arrojo E Drigo
- Molecular and Cell Biology Laboratory, The Salk Institute for Biological Studies, La Jolla, CA
| | - Varda Lev-Ram
- Department of Pharmacology, University of California, San Diego, La Jolla, CA
| | - Ranjan Ramachandra
- National Center for Microscopy and Imaging Research, Center for Research on Biological Systems, University of California, San Diego, La Jolla, CA
| | - Thomas J Deerinck
- National Center for Microscopy and Imaging Research, Center for Research on Biological Systems, University of California, San Diego, La Jolla, CA
| | - Claude Lechene
- Division of Genetics, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA
| | - Mark H Ellisman
- National Center for Microscopy and Imaging Research, Center for Research on Biological Systems, University of California, San Diego, La Jolla, CA.,Department of Neurosciences, University of California, San Diego, La Jolla, CA
| | - Martin W Hetzer
- Molecular and Cell Biology Laboratory, The Salk Institute for Biological Studies, La Jolla, CA
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25
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Mademtzoglou D, Asakura Y, Borok MJ, Alonso-Martin S, Mourikis P, Kodaka Y, Mohan A, Asakura A, Relaix F. Cellular localization of the cell cycle inhibitor Cdkn1c controls growth arrest of adult skeletal muscle stem cells. eLife 2018; 7:33337. [PMID: 30284969 PMCID: PMC6172026 DOI: 10.7554/elife.33337] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2017] [Accepted: 09/02/2018] [Indexed: 01/01/2023] Open
Abstract
Adult skeletal muscle maintenance and regeneration depend on efficient muscle stem cell (MuSC) functions. The mechanisms coordinating cell cycle with activation, renewal, and differentiation of MuSCs remain poorly understood. Here, we investigated how adult MuSCs are regulated by CDKN1c (p57kip2), a cyclin-dependent kinase inhibitor, using mouse molecular genetics. In the absence of CDKN1c, skeletal muscle repair is severely impaired after injury. We show that CDKN1c is not expressed in quiescent MuSCs, while being induced in activated and proliferating myoblasts and maintained in differentiating myogenic cells. In agreement, isolated Cdkn1c-deficient primary myoblasts display differentiation defects and increased proliferation. We further show that the subcellular localization of CDKN1c is dynamic; while CDKN1c is initially localized to the cytoplasm of activated/proliferating myoblasts, progressive nuclear translocation leads to growth arrest during differentiation. We propose that CDKN1c activity is restricted to differentiating myoblasts by regulated cyto-nuclear relocalization, coordinating the balance between proliferation and growth arrest.
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Affiliation(s)
- Despoina Mademtzoglou
- Inserm, IMRB U955-E10, F-94010, Créteil, France.,Ecole Nationale Veterinaire d'Alfort, Faculté de medecine, F-94000, Université Paris-Est Creteil, Maison Alfort, France
| | - Yoko Asakura
- Stem Cell Institute, Paul and Sheila Wellstone Muscular Dystrophy Center, Department of Neurology, University of Minnesota Medical School, Minneapolis, United States
| | - Matthew J Borok
- Inserm, IMRB U955-E10, F-94010, Créteil, France.,Ecole Nationale Veterinaire d'Alfort, Faculté de medecine, F-94000, Université Paris-Est Creteil, Maison Alfort, France
| | - Sonia Alonso-Martin
- Inserm, IMRB U955-E10, F-94010, Créteil, France.,Ecole Nationale Veterinaire d'Alfort, Faculté de medecine, F-94000, Université Paris-Est Creteil, Maison Alfort, France
| | - Philippos Mourikis
- Inserm, IMRB U955-E10, F-94010, Créteil, France.,Ecole Nationale Veterinaire d'Alfort, Faculté de medecine, F-94000, Université Paris-Est Creteil, Maison Alfort, France
| | - Yusaku Kodaka
- Stem Cell Institute, Paul and Sheila Wellstone Muscular Dystrophy Center, Department of Neurology, University of Minnesota Medical School, Minneapolis, United States
| | - Amrudha Mohan
- Stem Cell Institute, Paul and Sheila Wellstone Muscular Dystrophy Center, Department of Neurology, University of Minnesota Medical School, Minneapolis, United States
| | - Atsushi Asakura
- Stem Cell Institute, Paul and Sheila Wellstone Muscular Dystrophy Center, Department of Neurology, University of Minnesota Medical School, Minneapolis, United States
| | - Frederic Relaix
- Inserm, IMRB U955-E10, F-94010, Créteil, France.,Ecole Nationale Veterinaire d'Alfort, Faculté de medecine, F-94000, Université Paris-Est Creteil, Maison Alfort, France.,Etablissement Français du Sang, Créteil, France.,APHP, Hopitaux Universitaires Henri Mondor, DHU Pepsy & Centre de Référence des Maladies Neuromusculaires GNMH, Créteil, France
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26
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Abreu P. Bioenergetics mechanisms regulating muscle stem cell self-renewal commitment and function. Biomed Pharmacother 2018; 103:463-472. [DOI: 10.1016/j.biopha.2018.04.036] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2018] [Revised: 04/04/2018] [Accepted: 04/05/2018] [Indexed: 11/25/2022] Open
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27
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Machado L, Esteves de Lima J, Fabre O, Proux C, Legendre R, Szegedi A, Varet H, Ingerslev LR, Barrès R, Relaix F, Mourikis P. In Situ Fixation Redefines Quiescence and Early Activation of Skeletal Muscle Stem Cells. Cell Rep 2018; 21:1982-1993. [PMID: 29141227 DOI: 10.1016/j.celrep.2017.10.080] [Citation(s) in RCA: 178] [Impact Index Per Article: 29.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2017] [Revised: 09/13/2017] [Accepted: 10/21/2017] [Indexed: 12/12/2022] Open
Abstract
State of the art techniques have been developed to isolate and analyze cells from various tissues, aiming to capture their in vivo state. However, the majority of cell isolation protocols involve lengthy mechanical and enzymatic dissociation steps followed by flow cytometry, exposing cells to stress and disrupting their physiological niche. Focusing on adult skeletal muscle stem cells, we have developed a protocol that circumvents the impact of isolation procedures and captures cells in their native quiescent state. We show that current isolation protocols induce major transcriptional changes accompanied by specific histone modifications while having negligible effects on DNA methylation. In addition to proposing a protocol to avoid isolation-induced artifacts, our study reveals previously undetected quiescence and early activation genes of potential biological interest.
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Affiliation(s)
- Léo Machado
- Biology of the Neuromuscular System, INSERM IMRB U955-E10, UPEC, ENVA, EFS, Creteil 94000, France
| | - Joana Esteves de Lima
- Biology of the Neuromuscular System, INSERM IMRB U955-E10, UPEC, ENVA, EFS, Creteil 94000, France
| | - Odile Fabre
- Novo Nordisk Foundation Center for Basic Metabolic Research, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Caroline Proux
- Institut Pasteur, Plate-forme Transcriptome & Epigenome, Biomics, Centre d'Innovation et Recherche Technologique (Citech), Paris, France
| | - Rachel Legendre
- Institut Pasteur, Plate-forme Transcriptome & Epigenome, Biomics, Centre d'Innovation et Recherche Technologique (Citech), Paris, France; Institut Pasteur, Hub Bioinformatique et Biostatistique, Centre de Bioinformatique, Biostatistique et Biologie Intégrative (C3BI, USR 3756 IP CNRS), Paris, France
| | - Anikó Szegedi
- Biology of the Neuromuscular System, INSERM IMRB U955-E10, UPEC, ENVA, EFS, Creteil 94000, France
| | - Hugo Varet
- Institut Pasteur, Plate-forme Transcriptome & Epigenome, Biomics, Centre d'Innovation et Recherche Technologique (Citech), Paris, France; Institut Pasteur, Hub Bioinformatique et Biostatistique, Centre de Bioinformatique, Biostatistique et Biologie Intégrative (C3BI, USR 3756 IP CNRS), Paris, France
| | - Lars Roed Ingerslev
- Novo Nordisk Foundation Center for Basic Metabolic Research, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Romain Barrès
- Novo Nordisk Foundation Center for Basic Metabolic Research, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Frédéric Relaix
- Biology of the Neuromuscular System, INSERM IMRB U955-E10, UPEC, ENVA, EFS, Creteil 94000, France.
| | - Philippos Mourikis
- Biology of the Neuromuscular System, INSERM IMRB U955-E10, UPEC, ENVA, EFS, Creteil 94000, France
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28
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Hogan KA, Cho DS, Arneson PC, Samani A, Palines P, Yang Y, Doles JD. Tumor-derived cytokines impair myogenesis and alter the skeletal muscle immune microenvironment. Cytokine 2017; 107:9-17. [PMID: 29153940 DOI: 10.1016/j.cyto.2017.11.006] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2017] [Revised: 10/26/2017] [Accepted: 11/09/2017] [Indexed: 12/31/2022]
Abstract
Muscle wasting is a decline in skeletal muscle mass and function that is associated with aging, obesity, and a spectrum of pathologies including cancer. Cancer-associated wasting not only reduces quality of life, but also directly impacts cancer mortality, chemotherapeutic efficacy, and surgical outcomes. There is an incomplete understanding of the role of tumor-derived factors in muscle wasting and sparse knowledge of how these factors impact in vivo muscle regeneration. Here, we identify several cytokines/chemokines that negatively impact in vitro myogenic differentiation. We show that one of these cytokines, CXCL1, potently antagonizes in vivo muscle regeneration and interferes with in vivo muscle satellite cell homeostasis. Strikingly, CXCL1 triggers a robust and specific neutrophil/M2 macrophage response that likely underlies or exacerbates muscle repair/regeneration defects. Taken together, these data highlight the pleiotropic nature of a novel tumor-derived cytokine and underscore the importance of cytokines in muscle progenitor cell regulation.
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Affiliation(s)
- Kelly A Hogan
- Department of Biochemistry and Molecular Biology, Mayo Clinic, Rochester, MN 55905, USA
| | - Dong Seong Cho
- Department of Biochemistry and Molecular Biology, Mayo Clinic, Rochester, MN 55905, USA
| | - Paige C Arneson
- Department of Biochemistry and Molecular Biology, Mayo Clinic, Rochester, MN 55905, USA
| | - Adrienne Samani
- Department of Biochemistry and Molecular Biology, Mayo Clinic, Rochester, MN 55905, USA
| | - Patrick Palines
- Department of Biochemistry and Molecular Biology, Mayo Clinic, Rochester, MN 55905, USA
| | - Yanan Yang
- Department of Biochemistry and Molecular Biology, Mayo Clinic, Rochester, MN 55905, USA; Division of Pulmonary and Critical Care Medicine, Mayo Clinic, Rochester, MN 55905, USA
| | - Jason D Doles
- Department of Biochemistry and Molecular Biology, Mayo Clinic, Rochester, MN 55905, USA.
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29
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Zammit PS. Function of the myogenic regulatory factors Myf5, MyoD, Myogenin and MRF4 in skeletal muscle, satellite cells and regenerative myogenesis. Semin Cell Dev Biol 2017; 72:19-32. [PMID: 29127046 DOI: 10.1016/j.semcdb.2017.11.011] [Citation(s) in RCA: 436] [Impact Index Per Article: 62.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2017] [Revised: 11/03/2017] [Accepted: 11/06/2017] [Indexed: 12/19/2022]
Abstract
Discovery of the myogenic regulatory factor family of transcription factors MYF5, MYOD, Myogenin and MRF4 was a seminal step in understanding specification of the skeletal muscle lineage and control of myogenic differentiation during development. These factors are also involved in specification of the muscle satellite cell lineage, which becomes the resident stem cell compartment inadult skeletal muscle. While MYF5, MYOD, Myogenin and MRF4 have subtle roles in mature muscle, they again play a crucial role in directing satellite cell function to regenerate skeletal muscle: linking the genetic control of developmental and regenerative myogenesis. Here, I review the role of the myogenic regulatory factors in developing and mature skeletal muscle, satellite cell specification and muscle regeneration.
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Affiliation(s)
- Peter S Zammit
- King's College London, Randall Centre for Cell and Molecular Biophysics, London, SE1 1UL, UK.
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30
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Latella L, Dall'Agnese A, Boscolo FS, Nardoni C, Cosentino M, Lahm A, Sacco A, Puri PL. DNA damage signaling mediates the functional antagonism between replicative senescence and terminal muscle differentiation. Genes Dev 2017; 31:648-659. [PMID: 28446595 PMCID: PMC5411706 DOI: 10.1101/gad.293266.116] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2016] [Accepted: 03/23/2017] [Indexed: 12/20/2022]
Abstract
The molecular determinants of muscle progenitor impairment to regenerate aged muscles are currently unclear. We show that, in a mouse model of replicative senescence, decline in muscle satellite cell-mediated regeneration coincides with activation of DNA damage response (DDR) and impaired ability to differentiate into myotubes. Inhibition of DDR restored satellite cell differentiation ability. Moreover, in replicative human senescent fibroblasts, DDR precluded MYOD-mediated activation of the myogenic program. A DDR-resistant MYOD mutant could overcome this barrier by resuming cell cycle progression. Likewise, DDR inhibition could also restore MYOD's ability to activate the myogenic program in human senescent fibroblasts. Of note, we found that cell cycle progression is necessary for the DDR-resistant MYOD mutant to reverse senescence-mediated inhibition of the myogenic program. These data provide the first evidence of DDR-mediated functional antagonism between senescence and MYOD-activated gene expression and indicate a previously unrecognized requirement of cell cycle progression for the activation of the myogenic program.
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Affiliation(s)
- Lucia Latella
- Epigenetics and Regenerative Medicine, Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS) Fondazione Santa Lucia, 00179 Rome, Italy.,Institute of Translational Pharmacology, National Research Council of Italy, 00133 Rome, Italy
| | - Alessandra Dall'Agnese
- Development, Aging, and Regeneration Program, Sanford Children's Health Research Center, Sanford Burnham Prebys Medical Discovery Institute, La Jolla, California 92037, USA.,Graduate School of Biomedical Sciences, Sanford Burnham Prebys Medical Discovery Institute, La Jolla, California 92037, USA
| | - Francesca Sesillo Boscolo
- Development, Aging, and Regeneration Program, Sanford Children's Health Research Center, Sanford Burnham Prebys Medical Discovery Institute, La Jolla, California 92037, USA.,Graduate School of Biomedical Sciences, Sanford Burnham Prebys Medical Discovery Institute, La Jolla, California 92037, USA
| | - Chiara Nardoni
- Institute of Translational Pharmacology, National Research Council of Italy, 00133 Rome, Italy.,Pharmaceutical Development and Services, 00196 Roma, Italy
| | - Marianna Cosentino
- Epigenetics and Regenerative Medicine, Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS) Fondazione Santa Lucia, 00179 Rome, Italy.,Institute of Translational Pharmacology, National Research Council of Italy, 00133 Rome, Italy
| | - Armin Lahm
- Epigenetics and Regenerative Medicine, Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS) Fondazione Santa Lucia, 00179 Rome, Italy
| | - Alessandra Sacco
- Development, Aging, and Regeneration Program, Sanford Children's Health Research Center, Sanford Burnham Prebys Medical Discovery Institute, La Jolla, California 92037, USA
| | - Pier Lorenzo Puri
- Epigenetics and Regenerative Medicine, Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS) Fondazione Santa Lucia, 00179 Rome, Italy.,Development, Aging, and Regeneration Program, Sanford Children's Health Research Center, Sanford Burnham Prebys Medical Discovery Institute, La Jolla, California 92037, USA
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31
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Sin J, Andres AM, Taylor DJR, Weston T, Hiraumi Y, Stotland A, Kim BJ, Huang C, Doran KS, Gottlieb RA. Mitophagy is required for mitochondrial biogenesis and myogenic differentiation of C2C12 myoblasts. Autophagy 2016; 12:369-80. [PMID: 26566717 PMCID: PMC4836019 DOI: 10.1080/15548627.2015.1115172] [Citation(s) in RCA: 263] [Impact Index Per Article: 32.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
Myogenesis is a crucial process governing skeletal muscle development and homeostasis. Differentiation of primitive myoblasts into mature myotubes requires a metabolic switch to support the increased energetic demand of contractile muscle. Skeletal myoblasts specifically shift from a highly glycolytic state to relying predominantly on oxidative phosphorylation (OXPHOS) upon differentiation. We have found that this phenomenon requires dramatic remodeling of the mitochondrial network involving both mitochondrial clearance and biogenesis. During early myogenic differentiation, autophagy is robustly upregulated and this coincides with DNM1L/DRP1 (dynamin 1-like)-mediated fragmentation and subsequent removal of mitochondria via SQSTM1 (sequestosome 1)-mediated mitophagy. Mitochondria are then repopulated via PPARGC1A/PGC-1α (peroxisome proliferator-activated receptor gamma, coactivator 1 alpha)-mediated biogenesis. Mitochondrial fusion protein OPA1 (optic atrophy 1 [autosomal dominant]) is then briskly upregulated, resulting in the reformation of mitochondrial networks. The final product is a myotube replete with new mitochondria. Respirometry reveals that the constituents of these newly established mitochondrial networks are better primed for OXPHOS and are more tightly coupled than those in myoblasts. Additionally, we have found that suppressing autophagy with various inhibitors during differentiation interferes with myogenic differentiation. Together these data highlight the integral role of autophagy and mitophagy in myogenic differentiation.
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Affiliation(s)
- Jon Sin
- a The Cedars-Sinai Heart Institute and the Barbra Streisand Women's Heart Center Cedars-Sinai Medical Center , Los Angeles , CA , USA
| | - Allen M Andres
- a The Cedars-Sinai Heart Institute and the Barbra Streisand Women's Heart Center Cedars-Sinai Medical Center , Los Angeles , CA , USA
| | - David J R Taylor
- a The Cedars-Sinai Heart Institute and the Barbra Streisand Women's Heart Center Cedars-Sinai Medical Center , Los Angeles , CA , USA
| | - Thomas Weston
- b Department of Biology , San Diego State University , San Diego , CA , USA
| | - Yoshimi Hiraumi
- a The Cedars-Sinai Heart Institute and the Barbra Streisand Women's Heart Center Cedars-Sinai Medical Center , Los Angeles , CA , USA
| | - Aleksandr Stotland
- a The Cedars-Sinai Heart Institute and the Barbra Streisand Women's Heart Center Cedars-Sinai Medical Center , Los Angeles , CA , USA
| | - Brandon J Kim
- b Department of Biology , San Diego State University , San Diego , CA , USA
| | - Chengqun Huang
- a The Cedars-Sinai Heart Institute and the Barbra Streisand Women's Heart Center Cedars-Sinai Medical Center , Los Angeles , CA , USA
| | - Kelly S Doran
- b Department of Biology , San Diego State University , San Diego , CA , USA
| | - Roberta A Gottlieb
- a The Cedars-Sinai Heart Institute and the Barbra Streisand Women's Heart Center Cedars-Sinai Medical Center , Los Angeles , CA , USA
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Bi P, Yue F, Sato Y, Wirbisky S, Liu W, Shan T, Wen Y, Zhou D, Freeman J, Kuang S. Stage-specific effects of Notch activation during skeletal myogenesis. eLife 2016; 5. [PMID: 27644105 PMCID: PMC5070950 DOI: 10.7554/elife.17355] [Citation(s) in RCA: 67] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2016] [Accepted: 09/17/2016] [Indexed: 12/16/2022] Open
Abstract
Skeletal myogenesis involves sequential activation, proliferation, self-renewal/differentiation and fusion of myogenic stem cells (satellite cells). Notch signaling is known to be essential for the maintenance of satellite cells, but its function in late-stage myogenesis, i.e. post-differentiation myocytes and post-fusion myotubes, is unknown. Using stage-specific Cre alleles, we uncovered distinct roles of Notch1 in mononucleated myocytes and multinucleated myotubes. Specifically, constitutive Notch1 activation dedifferentiates myocytes into Pax7 quiescent satellite cells, leading to severe defects in muscle growth and regeneration, and postnatal lethality. By contrast, myotube-specific Notch1 activation improves the regeneration and exercise performance of aged and dystrophic muscles. Mechanistically, Notch1 activation in myotubes upregulates the expression of Notch ligands, which modulate Notch signaling in the adjacent satellite cells to enhance their regenerative capacity. These results highlight context-dependent effects of Notch activation during myogenesis, and demonstrate that Notch1 activity improves myotube's function as a stem cell niche.
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Affiliation(s)
- Pengpeng Bi
- Department of Animal Sciences, Purdue University, West Lafayette, United States
| | - Feng Yue
- Department of Animal Sciences, Purdue University, West Lafayette, United States
| | - Yusuke Sato
- Department of Animal Sciences, Purdue University, West Lafayette, United States
| | - Sara Wirbisky
- School of Health Sciences, Purdue University, West Lafayette, United States
| | - Weiyi Liu
- Department of Animal Sciences, Purdue University, West Lafayette, United States
| | - Tizhong Shan
- Department of Animal Sciences, Purdue University, West Lafayette, United States
| | - Yefei Wen
- Department of Animal Sciences, Purdue University, West Lafayette, United States
| | - Daoguo Zhou
- Department of Biological Sciences, Purdue University, West Lafayette, United States
| | - Jennifer Freeman
- School of Health Sciences, Purdue University, West Lafayette, United States.,Center for Cancer Research, Purdue University, West Lafayette, United States
| | - Shihuan Kuang
- Department of Animal Sciences, Purdue University, West Lafayette, United States.,Center for Cancer Research, Purdue University, West Lafayette, United States
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Almada AE, Wagers AJ. Molecular circuitry of stem cell fate in skeletal muscle regeneration, ageing and disease. Nat Rev Mol Cell Biol 2016; 17:267-79. [PMID: 26956195 DOI: 10.1038/nrm.2016.7] [Citation(s) in RCA: 209] [Impact Index Per Article: 26.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Satellite cells are adult myogenic stem cells that repair damaged muscle. The enduring capacity for muscle regeneration requires efficient satellite cell expansion after injury, their differentiation to produce myoblasts that can reconstitute damaged fibres and their self-renewal to replenish the muscle stem cell pool for subsequent rounds of injury and repair. Emerging studies indicate that misregulation of satellite cell fate and function can contribute to age-associated muscle dysfunction and influence the severity of muscle diseases, including Duchenne muscular dystrophy (DMD). It has also become apparent that satellite cell fate during muscle regeneration and ageing, and in the context of DMD, is governed by an intricate network of intrinsic and extrinsic regulators. Targeted manipulation of this network may offer unique opportunities for muscle regenerative medicine.
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Affiliation(s)
- Albert E Almada
- Department of Stem Cell and Regenerative Biology, Harvard University, 7 Divinity Avenue, Cambridge, Massachusetts 02138, USA
| | - Amy J Wagers
- Department of Stem Cell and Regenerative Biology, Harvard University, 7 Divinity Avenue, Cambridge, Massachusetts 02138, USA
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34
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Ochiai N, Nishizuka M, Osada S, Imagawa M. Fad24, a Positive Regulator of Adipogenesis, Is Required for S Phase Re-entry of C2C12 Myoblasts Arrested in G0 Phase and Involved in p27 Kip1 Expression at the Protein Level. Biol Pharm Bull 2016; 39:807-14. [DOI: 10.1248/bpb.b15-00954] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Natsuki Ochiai
- Department of Molecular Biology, Graduate School of Pharmaceutical Sciences, Nagoya City University
| | - Makoto Nishizuka
- Department of Molecular Biology, Graduate School of Pharmaceutical Sciences, Nagoya City University
| | - Shigehiro Osada
- Department of Molecular Biology, Graduate School of Pharmaceutical Sciences, Nagoya City University
| | - Masayoshi Imagawa
- Department of Molecular Biology, Graduate School of Pharmaceutical Sciences, Nagoya City University
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35
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Marino S, Di Foggia V. Invited Review: Polycomb group genes in the regeneration of the healthy and pathological skeletal muscle. Neuropathol Appl Neurobiol 2015; 42:407-22. [PMID: 26479276 DOI: 10.1111/nan.12290] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2015] [Revised: 10/14/2015] [Accepted: 10/19/2015] [Indexed: 12/21/2022]
Abstract
The polycomb group (PcG) proteins are epigenetic repressors required during key developmental processes, such as maintenance of cell identity and stem cell differentiation. To exert their repressive function, PcG proteins assemble on chromatin into multiprotein complexes, known as polycomb repressive complex 1 and 2. In this review, we will focus on the role and mode of function of PcG proteins in the development and regeneration of the skeletal muscle, both in normal and pathological conditions and we will discuss the emerging concept of modulation of their expression to enhance the muscle-specific regenerative process for patient benefit.
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Affiliation(s)
- S Marino
- Blizard Institute, Barts and the London School of Medicine and Dentistry, Queen Mary University of London, London, UK
| | - V Di Foggia
- Blizard Institute, Barts and the London School of Medicine and Dentistry, Queen Mary University of London, London, UK
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36
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Boonsanay V, Zhang T, Georgieva A, Kostin S, Qi H, Yuan X, Zhou Y, Braun T. Regulation of Skeletal Muscle Stem Cell Quiescence by Suv4-20h1-Dependent Facultative Heterochromatin Formation. Cell Stem Cell 2015; 18:229-42. [PMID: 26669898 DOI: 10.1016/j.stem.2015.11.002] [Citation(s) in RCA: 108] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2014] [Revised: 10/08/2015] [Accepted: 11/05/2015] [Indexed: 12/16/2022]
Abstract
Skeletal muscle stem cells (MuSCs) are required for regeneration of adult muscle following injury, a response that demands activation of mainly quiescent MuSCs. Despite the need for dynamic regulation of MuSC quiescence, relatively little is known about the determinants of this property. Here, we show that Suv4-20h1, an H4K20 dimethyltransferase, controls MuSC quiescence by promoting formation of facultative heterochromatin (fHC). Deletion of Suv4-20h1 reduces fHC and induces transcriptional activation and repositioning of the MyoD locus away from the heterochromatic nuclear periphery. These effects promote MuSC activation, resulting in stem cell depletion and impaired long-term muscle regeneration. Genetic reduction of MyoD expression rescues fHC formation and lost MuSC quiescence, restoring muscle regeneration capacity in Suv4-20h1 mutants. Together, these findings reveal that Suv4-20h1 actively regulates MuSC quiescence via fHC formation and control of the MyoD locus, thereby guarding and preserving the stem cell pool over a lifetime.
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Affiliation(s)
- Verawan Boonsanay
- Max-Planck-Institute for Heart and Lung Research, Department of Cardiac Development and Remodeling, 61231 Bad Nauheim, Germany
| | - Ting Zhang
- Max-Planck-Institute for Heart and Lung Research, Department of Cardiac Development and Remodeling, 61231 Bad Nauheim, Germany
| | - Angelina Georgieva
- Max-Planck-Institute for Heart and Lung Research, Department of Cardiac Development and Remodeling, 61231 Bad Nauheim, Germany
| | - Sawa Kostin
- Max-Planck-Institute for Heart and Lung Research, Department of Cardiac Development and Remodeling, 61231 Bad Nauheim, Germany
| | - Hui Qi
- Max-Planck-Institute for Heart and Lung Research, Department of Cardiac Development and Remodeling, 61231 Bad Nauheim, Germany
| | - Xuejun Yuan
- Max-Planck-Institute for Heart and Lung Research, Department of Cardiac Development and Remodeling, 61231 Bad Nauheim, Germany
| | - Yonggang Zhou
- Max-Planck-Institute for Heart and Lung Research, Department of Cardiac Development and Remodeling, 61231 Bad Nauheim, Germany.
| | - Thomas Braun
- Max-Planck-Institute for Heart and Lung Research, Department of Cardiac Development and Remodeling, 61231 Bad Nauheim, Germany; Instituto de Investigacion en Biomedicina de Buenos Aires (IBioBA)-CONICET-Partner Institute of the Max Planck Society, C1425FQD Buenos Aires, Argentina.
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37
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Jiang W, Zhu J, Zhuang X, Zhang X, Luo T, Esser KA, Ren H. Lipin1 Regulates Skeletal Muscle Differentiation through Extracellular Signal-regulated Kinase (ERK) Activation and Cyclin D Complex-regulated Cell Cycle Withdrawal. J Biol Chem 2015; 290:23646-55. [PMID: 26296887 DOI: 10.1074/jbc.m115.686519] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2015] [Indexed: 12/20/2022] Open
Abstract
Lipin1, an intracellular protein, plays critical roles in controlling lipid synthesis and energy metabolism through its enzymatic activity and nuclear transcriptional functions. Several mouse models of skeletal muscle wasting are associated with lipin1 mutation or altered expression. Recent human studies have suggested that children with homozygous null mutations in the LPIN1 gene suffer from rhabdomyolysis. However, the underlying pathophysiologic mechanism is still poorly understood. In the present study we examined whether lipin1 contributes to regulating muscle regeneration. We characterized the time course of skeletal muscle regeneration in lipin1-deficient fld mice after injury. We found that fld mice exhibited smaller regenerated muscle fiber cross-sectional areas compared with wild-type mice in response to injury. Our results from a series of in vitro experiments suggest that lipin1 is up-regulated and translocated to the nucleus during myoblast differentiation and plays a key role in myogenesis by regulating the cytosolic activation of ERK1/2 to form a complex and a downstream effector cyclin D3-mediated cell cycle withdrawal. Overall, our study reveals a previously unknown role of lipin1 in skeletal muscle regeneration and expands our understanding of the cellular and molecular mechanisms underlying skeletal muscle regeneration.
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Affiliation(s)
- Weihua Jiang
- From the Division of Cardiovascular Medicine, Department of Internal Medicine, Saha Cardiovascular Center
| | - Jing Zhu
- From the Division of Cardiovascular Medicine, Department of Internal Medicine, Saha Cardiovascular Center
| | - Xun Zhuang
- From the Division of Cardiovascular Medicine, Department of Internal Medicine, Saha Cardiovascular Center
| | - Xiping Zhang
- Department of Physiology, University of Kentucky, Lexington, Kentucky 40536
| | - Tao Luo
- From the Division of Cardiovascular Medicine, Department of Internal Medicine, Saha Cardiovascular Center
| | - Karyn A Esser
- Department of Physiology, University of Kentucky, Lexington, Kentucky 40536
| | - Hongmei Ren
- From the Division of Cardiovascular Medicine, Department of Internal Medicine, Saha Cardiovascular Center,
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38
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Abstract
DNA damage is induced in many types of cells by internal and external cell stress. When DNA is damaged, DNA Damage Response (DDR) programs are activated to repair the DNA lesions in order to preserve genomic integrity and suppress subsequent malignant transformation. Among these programs is cell cycle checkpoint that ensures cell cycle arrest and subsequent repair of the damaged DNA, apoptosis and senescence in various phases of the cell cycle. Moreover, recent studies have established the cell differentiation checkpoint, the other type of the checkpoint that is specifically activated in the course of differentiation. We will discuss the evidences that support the link between DNA damage proteins and C2C12 cell differentiation.
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Affiliation(s)
- Sara Cuesta Sancho
- Department of Cancer Genetics, Roswell Park Cancer Institute, Buffalo, NY14263, USA
| | - Toru Ouchi
- Department of Cancer Genetics, Roswell Park Cancer Institute, Buffalo, NY14263, USA
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39
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Singh K, Cassano M, Planet E, Sebastian S, Jang SM, Sohi G, Faralli H, Choi J, Youn HD, Dilworth FJ, Trono D. A KAP1 phosphorylation switch controls MyoD function during skeletal muscle differentiation. Genes Dev 2015; 29:513-25. [PMID: 25737281 PMCID: PMC4358404 DOI: 10.1101/gad.254532.114] [Citation(s) in RCA: 57] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
The transcriptional activator MyoD serves as a master controller of myogenesis. Singh et al. identify KAP1/TRIM28 as a key regulator of MyoD function. In myoblasts, KAP1 is present with MyoD and Mef2 at many muscle genes, where it acts as a scaffold to recruit not only coactivators such as p300 and LSD1 but also corepressors such as G9a and HDAC1, with promoter silencing as the net outcome. Upon differentiation, MSK1-mediated phosphorylation of KAP1 releases the corepressors from the scaffold, unleashing transcriptional activation by MyoD/Mef2 and their positive cofactors. The transcriptional activator MyoD serves as a master controller of myogenesis. Often in partnership with Mef2 (myocyte enhancer factor 2), MyoD binds to the promoters of hundreds of muscle genes in proliferating myoblasts yet activates these targets only upon receiving cues that launch differentiation. What regulates this off/on switch of MyoD function has been incompletely understood, although it is known to reflect the action of chromatin modifiers. Here, we identify KAP1 (KRAB [Krüppel-like associated box]-associated protein 1)/TRIM28 (tripartite motif protein 28) as a key regulator of MyoD function. In myoblasts, KAP1 is present with MyoD and Mef2 at many muscle genes, where it acts as a scaffold to recruit not only coactivators such as p300 and LSD1 but also corepressors such as G9a and HDAC1 (histone deacetylase 1), with promoter silencing as the net outcome. Upon differentiation, MSK1-mediated phosphorylation of KAP1 releases the corepressors from the scaffold, unleashing transcriptional activation by MyoD/Mef2 and their positive cofactors. Thus, our results reveal KAP1 as a previously unappreciated interpreter of cell signaling, which modulates the ability of MyoD to drive myogenesis.
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Affiliation(s)
- Kulwant Singh
- Sprott Center for Stem Cell Research, Ottawa Hospital Research Institute, Ottawa, Ontario K1H 8L6, Canada
| | - Marco Cassano
- School of Life Sciences, Ecole Polytechnique Fédérale de Lausanne (EPFL), 1015 Lausanne, Switzerland
| | - Evarist Planet
- School of Life Sciences, Ecole Polytechnique Fédérale de Lausanne (EPFL), 1015 Lausanne, Switzerland
| | - Soji Sebastian
- Sprott Center for Stem Cell Research, Ottawa Hospital Research Institute, Ottawa, Ontario K1H 8L6, Canada
| | - Suk Min Jang
- School of Life Sciences, Ecole Polytechnique Fédérale de Lausanne (EPFL), 1015 Lausanne, Switzerland
| | - Gurjeev Sohi
- Sprott Center for Stem Cell Research, Ottawa Hospital Research Institute, Ottawa, Ontario K1H 8L6, Canada
| | - Hervé Faralli
- Sprott Center for Stem Cell Research, Ottawa Hospital Research Institute, Ottawa, Ontario K1H 8L6, Canada
| | - Jinmi Choi
- Department of Biomedical Sciences and Biochemistry and Molecular Biology, Seoul National University College of Medicine, Seoul 110-799, Korea
| | - Hong-Duk Youn
- Department of Biomedical Sciences and Biochemistry and Molecular Biology, Seoul National University College of Medicine, Seoul 110-799, Korea
| | - F Jeffrey Dilworth
- Sprott Center for Stem Cell Research, Ottawa Hospital Research Institute, Ottawa, Ontario K1H 8L6, Canada; Department of Cellular and Molecular Medicine, University of Ottawa, Ontario K1H 8L6, Canada
| | - Didier Trono
- School of Life Sciences, Ecole Polytechnique Fédérale de Lausanne (EPFL), 1015 Lausanne, Switzerland;
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40
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Fu X, Wang H, Hu P. Stem cell activation in skeletal muscle regeneration. Cell Mol Life Sci 2015; 72:1663-77. [PMID: 25572293 PMCID: PMC4412728 DOI: 10.1007/s00018-014-1819-5] [Citation(s) in RCA: 89] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2014] [Revised: 12/21/2014] [Accepted: 12/22/2014] [Indexed: 12/31/2022]
Abstract
Muscle stem cell (satellite cell) activation post muscle injury is a transient and critical step in muscle regeneration. It is regulated by physiological cues, signaling molecules, and epigenetic regulatory factors. The mechanisms that coherently turn on the complex activation process shortly after trauma are just beginning to be illuminated. In this review, we will discuss the current knowledge of satellite cell activation regulation.
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Affiliation(s)
- Xin Fu
- State Key Laboratory of Cell Biology, Institute of Biochemistry and Cell Biology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, 320 Yueyang Road, Shanghai, 200031, China
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41
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A transcriptional mechanism integrating inputs from extracellular signals to activate hippocampal stem cells. Neuron 2014; 83:1085-97. [PMID: 25189209 PMCID: PMC4157576 DOI: 10.1016/j.neuron.2014.08.004] [Citation(s) in RCA: 142] [Impact Index Per Article: 14.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/01/2014] [Indexed: 12/27/2022]
Abstract
The activity of adult stem cells is regulated by signals emanating from the surrounding tissue. Many niche signals have been identified, but it is unclear how they influence the choice of stem cells to remain quiescent or divide. Here we show that when stem cells of the adult hippocampus receive activating signals, they first induce the expression of the transcription factor Ascl1 and only subsequently exit quiescence. Moreover, lowering Ascl1 expression reduces the proliferation rate of hippocampal stem cells, and inactivating Ascl1 blocks quiescence exit completely, rendering them unresponsive to activating stimuli. Ascl1 promotes the proliferation of hippocampal stem cells by directly regulating the expression of cell-cycle regulatory genes. Ascl1 is similarly required for stem cell activation in the adult subventricular zone. Our results support a model whereby Ascl1 integrates inputs from both stimulatory and inhibitory signals and converts them into a transcriptional program activating adult neural stem cells.
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42
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Dey BK, Mueller AC, Dutta A. Long non-coding RNAs as emerging regulators of differentiation, development, and disease. Transcription 2014; 5:e944014. [PMID: 25483404 DOI: 10.4161/21541272.2014.944014] [Citation(s) in RCA: 261] [Impact Index Per Article: 26.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
Abstract
A significant portion of the mammalian genome encodes numerous transcripts that are not translated into proteins, termed long non-coding RNAs. Initial studies identifying long non-coding RNAs inferred these RNA sequences were a consequence of transcriptional noise or promiscuous RNA polymerase II activity. However, the last decade has seen a revolution in the understanding of regulation and function of long non-coding RNAs. Now it has become apparent that long non-coding RNAs play critical roles in a wide variety of biological processes. In this review, we describe the current understanding of long non-coding RNA-mediated regulation of cellular processes: differentiation, development, and disease.
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Key Words
- Bvht, braveheart
- CDT, C-terminal domain
- DBE-T, D4Z4-binding element
- DMD, Duchenne muscular dystrophy
- ES, embryonic stem
- FSHD, facioscapulohumeral muscular dystrophy
- Fendrr, Foxf1a called fetal-lethal non-coding developmental regulatory RNA
- MEF2, myocyte enhancer factor-2
- MRFs, myogenic regulatory factors
- Malat1, metastasis associated lung adenocarcinoma transcript 1
- Mesp1, mesoderm progenitor 1
- Neat2, nuclear-enriched abundant transcript 2
- PRC2, polycomb group repressive complex 2
- RNAP II, RNA polymerase II
- SINE, short interspersed element
- SR, serine arginine
- SRA, steroid receptor activator
- SRY, sex-determining region Y
- YAM 1-4, YY1-associated muscle 1-4
- ceRNAs, competing endogenous RNAs
- ciRS-7, circular RNA sponge for miR-7
- development
- differentiation
- disease
- gene expression
- iPS, induced pluripotent stem
- lncRNAs, long non-coding RNAs
- long non-coding RNAs
- ncRNAa, non-coding RNA activating
- skeletal muscle
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Affiliation(s)
- Bijan K Dey
- a Department of Biochemistry and Molecular Genetics ; University of Virginia School of Medicine ; Charlottesville , VA USA
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43
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Chao TC, Chen KJ, Tang MC, Chan LC, Chen PM, Tzeng CH, Su Y. Thymosin beta-4 knockdown in IEC-6 normal intestinal epithelial cells induces DNA re-replication via downregulating Emi1. J Cell Physiol 2014; 229:1639-46. [PMID: 24615569 DOI: 10.1002/jcp.24609] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2014] [Accepted: 03/04/2014] [Indexed: 12/19/2022]
Abstract
Thymosin β4 (Tβ4 ) is a multifunctional protein already used clinically to treat various diseases; however, the promoting effect of this protein on tumor malignancy should not be neglected. Here, we assessed whether Tβ4 alteration influences normal intestinal epithelial cells because Tβ4 is deemed a novel target for treating colorectal cancer (CRC). For this purpose, we examined the consequences of shRNA-mediated knockdown of Tβ4 in IEC-6 normal rat small intestinal cells and found that inhibiting Tβ4 expression significantly suppressed their growth and induced apoptosis in some cells. Flow cytometric analysis further revealed a marked decrease of G0/G1 population but a drastic increase of polyploid ones in these cells. The increase of polyploidy likely resulted from DNA re-replication because not only the de novo DNA synthesis was greatly increased but also the expression levels of Cdc6 (a replication-licensing factor), cyclin A, and phosphorylated-checkpoint kinase 1 were all dramatically elevated. Moreover, marked reductions in both RNA and protein levels of Emi1 (early mitotic inhibitor 1) were also detected in Tβ4 -downregulated IEC-6 cells which might be accounted by the downregulation of E2F1, a transcription factor capable of inducing Emi1 expression, mediated by glycogen synthase-3β (GSK-3β). To our best knowledge, this is the first report showing that inhibiting Tβ4 expression triggers DNA re-replication in normal intestinal epithelial cells, suggesting that this G-actin sequester may play a crucial role in maintaining genome stability in these cells. More importantly, clinical oncologists should take this novel activity into consideration when design CRC therapy based on targeting Tβ4 .
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Affiliation(s)
- Ta-Chung Chao
- Institute of Clinical Medicine, National Yang-Ming University, Taipei, Taiwan; Division of Hematology and Oncology, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan
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44
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De Luca G, Ferretti R, Bruschi M, Mezzaroma E, Caruso M. Cyclin D3 critically regulates the balance between self-renewal and differentiation in skeletal muscle stem cells. Stem Cells 2014; 31:2478-91. [PMID: 23897741 PMCID: PMC3963451 DOI: 10.1002/stem.1487] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2013] [Revised: 05/26/2013] [Accepted: 06/21/2013] [Indexed: 12/28/2022]
Abstract
Satellite cells are mitotically quiescent myogenic stem cells resident beneath the basal lamina surrounding adult muscle myofibers. In response to injury, multiple extrinsic signals drive the entry of satellite cells into the cell cycle and then to proliferation, differentiation, and self-renewal of their downstream progeny. Because satellite cells must endure for a lifetime, their cell cycle activity must be carefully controlled to coordinate proliferative expansion and self-renewal with the onset of the differentiation program. In this study, we find that cyclin D3, a member of the family of mitogen-activated D-type cyclins, is critically required for proper developmental progression of myogenic progenitors. Using a cyclin D3-knockout mouse we determined that cyclin D3 deficiency leads to reduced myofiber size and impaired establishment of the satellite cell population within the adult muscle. Cyclin D3-null myogenic progenitors, studied ex vivo on isolated myofibers and in vitro, displayed impaired cell cycle progression, increased differentiation potential, and reduced self-renewal capability. Similarly, silencing of cyclin D3 in C2 myoblasts caused anticipated exit from the cell cycle and precocious onset of terminal differentiation. After induced muscle damage, cyclin D3-null myogenic progenitors exhibited proliferation deficits, a precocious ability to form newly generated myofibers and a reduced capability to repopulate the satellite cell niche at later stages of the regeneration process. These results indicate that cyclin D3 plays a cell-autonomous and nonredundant function in regulating the dynamic balance between proliferation, differentiation, and self-renewal that normally establishes an appropriate pool size of adult satellite cells.
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Affiliation(s)
- Giulia De Luca
- National Research Council, Institute of Cell Biology and Neurobiology, Fondazione Santa Lucia, Roma, Italy
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45
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Schöneich C, Dremina E, Galeva N, Sharov V. Apoptosis in differentiating C2C12 muscle cells selectively targets Bcl-2-deficient myotubes. Apoptosis 2014; 19:42-57. [PMID: 24129924 DOI: 10.1007/s10495-013-0922-7] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
Muscle cell apoptosis accompanies normal muscle development and regeneration, as well as degenerative diseases and aging. C2C12 murine myoblast cells represent a common model to study muscle differentiation. Though it was already shown that myogenic differentiation of C2C12 cells is accompanied by enhanced apoptosis in a fraction of cells, either the cell population sensitive to apoptosis or regulatory mechanisms for the apoptotic response are unclear so far. In the current study we characterize apoptotic phenotypes of different types of C2C12 cells at all stages of differentiation, and report here that myotubes of differentiated C2C12 cells with low levels of anti-apoptotic Bcl-2 expression are particularly vulnerable to apoptosis even though they are displaying low levels of pro-apoptotic proteins Bax, Bak and Bad. In contrast, reserve cells exhibit higher levels of Bcl-2 and high resistance to apoptosis. The transfection of proliferating myoblasts with Bcl-2 prior to differentiation did not protect against spontaneous apoptosis accompanying differentiation of C2C12 cells but led to Bcl-2 overexpression in myotubes and to significant protection from apoptotic cell loss caused by exposure to hydrogen peroxide. Overall, our data advocate for a Bcl-2-dependent mechanism of apoptosis in differentiated muscle cells. However, downstream processes for spontaneous and hydrogen peroxide induced apoptosis are not completely similar. Apoptosis in differentiating myoblasts and myotubes is regulated not through interaction of Bcl-2 with pro-apoptotic Bcl-2 family proteins such as Bax, Bak, and Bad.
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46
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Zhang X, Xiao D, Wang Z, Zou Y, Huang L, Lin W, Deng Q, Pan H, Zhou J, Liang C, He J. MicroRNA-26a/b regulate DNA replication licensing, tumorigenesis, and prognosis by targeting CDC6 in lung cancer. Mol Cancer Res 2014; 12:1535-46. [PMID: 25100863 DOI: 10.1158/1541-7786.mcr-13-0641] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
UNLABELLED Cancer is characterized by mutations, genome rearrangements, epigenetic changes, and altered gene expression that enhance cell proliferation, invasion, and metastasis. To accommodate deregulated cellular proliferation, many DNA replication-initiation proteins are overexpressed in human cancers. However, the mechanism that represses the expression of these proteins in normal cells and the cellular changes that result in their overexpression are largely unknown. One possible mechanism is through miRNA expression differences. Here, it is demonstrated that miR26a and miR26b inhibit replication licensing and the proliferation, migration, and invasion of lung cancer cells by targeting CDC6. Importantly, miR26a/b expression is significantly decreased in human lung cancer tissue specimens compared with the paired adjacent normal tissues, and miR26a/b downregulation and the consequential upregulation of CDC6 are associated with poorer prognosis of patients with lung cancer. These results indicate that miR26a/b repress replication licensing and tumorigenesis by targeting CDC6. IMPLICATIONS The current study suggests that miR26a, miR26b, and CDC6 and factors regulating their expression represent potential cancer diagnostic and prognostic markers as well as anticancer targets.
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Affiliation(s)
- Xin Zhang
- Department of Cardiothoracic Surgery, The First Affiliated Hospital of Guangzhou Medical University, State Key Laboratory of Respiratory Disease, Guangzhou, China
| | - Dakai Xiao
- Department of Cardiothoracic Surgery, The First Affiliated Hospital of Guangzhou Medical University, State Key Laboratory of Respiratory Disease, Guangzhou, China
| | - Ziyi Wang
- Guangzhou HKUST Fok Ying Tung Research Institute, Guangzhou, China. Division of Life Science and Center for Cancer Research, Hong Kong University of Science and Technology, Hong Kong, China
| | - Yongxin Zou
- Guangzhou HKUST Fok Ying Tung Research Institute, Guangzhou, China. Division of Life Science and Center for Cancer Research, Hong Kong University of Science and Technology, Hong Kong, China
| | - Liyan Huang
- Department of Cardiothoracic Surgery, The First Affiliated Hospital of Guangzhou Medical University, State Key Laboratory of Respiratory Disease, Guangzhou, China
| | - Weixuan Lin
- Department of Cardiothoracic Surgery, The First Affiliated Hospital of Guangzhou Medical University, State Key Laboratory of Respiratory Disease, Guangzhou, China
| | - Qiuhua Deng
- Department of Cardiothoracic Surgery, The First Affiliated Hospital of Guangzhou Medical University, State Key Laboratory of Respiratory Disease, Guangzhou, China
| | - Hui Pan
- Department of Cardiothoracic Surgery, The First Affiliated Hospital of Guangzhou Medical University, State Key Laboratory of Respiratory Disease, Guangzhou, China
| | - Jiangfen Zhou
- Department of Cardiothoracic Surgery, The First Affiliated Hospital of Guangzhou Medical University, State Key Laboratory of Respiratory Disease, Guangzhou, China
| | - Chun Liang
- Guangzhou HKUST Fok Ying Tung Research Institute, Guangzhou, China. Division of Life Science and Center for Cancer Research, Hong Kong University of Science and Technology, Hong Kong, China.
| | - Jianxing He
- Department of Cardiothoracic Surgery, The First Affiliated Hospital of Guangzhou Medical University, State Key Laboratory of Respiratory Disease, Guangzhou, China.
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47
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Buchwalter AL, Liang Y, Hetzer MW. Nup50 is required for cell differentiation and exhibits transcription-dependent dynamics. Mol Biol Cell 2014; 25:2472-84. [PMID: 24943837 PMCID: PMC4142618 DOI: 10.1091/mbc.e14-04-0865] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Nup50 is a mobile nucleoporin with a pronounced presence both at the nuclear pore complex and in the nucleoplasm that can move between these different localizations. The dynamic behavior of Nup50 in both locations is dependent on active transcription by RNA polymerase II. The nuclear pore complex (NPC) plays a critical role in gene expression by mediating import of transcription regulators into the nucleus and export of RNA transcripts to the cytoplasm. Emerging evidence suggests that in addition to mediating transport, a subset of nucleoporins (Nups) engage in transcriptional activation and elongation at genomic loci that are not associated with NPCs. The underlying mechanism and regulation of Nup mobility on and off nuclear pores remain unclear. Here we show that Nup50 is a mobile Nup with a pronounced presence both at the NPC and in the nucleoplasm that can move between these different localizations. Strikingly, the dynamic behavior of Nup50 in both locations is dependent on active transcription by RNA polymerase II and requires the N-terminal half of the protein, which contains importin α– and Nup153-binding domains. However, Nup50 dynamics are independent of importin α, Nup153, and Nup98, even though the latter two proteins also exhibit transcription-dependent mobility. Of interest, depletion of Nup50 from C2C12 myoblasts does not affect cell proliferation but inhibits differentiation into myotubes. Taken together, our results suggest a transport-independent role for Nup50 in chromatin biology that occurs away from the NPC.
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Affiliation(s)
- Abigail L Buchwalter
- Molecular and Cell Biology Laboratory, Salk Institute for Biological Studies, La Jolla, CA 92037
| | - Yun Liang
- Molecular and Cell Biology Laboratory, Salk Institute for Biological Studies, La Jolla, CA 92037
| | - Martin W Hetzer
- Molecular and Cell Biology Laboratory, Salk Institute for Biological Studies, La Jolla, CA 92037
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48
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HuR and miR-1192 regulate myogenesis by modulating the translation of HMGB1 mRNA. Nat Commun 2014; 4:2388. [PMID: 24005720 PMCID: PMC4005793 DOI: 10.1038/ncomms3388] [Citation(s) in RCA: 63] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2013] [Accepted: 08/02/2013] [Indexed: 12/14/2022] Open
Abstract
Upon muscle injury, the high mobility group box 1 (HMGB1) protein is upregulated and secreted to initiate reparative responses. Here we show that HMGB1 controls myogenesis both in vitro and in vivo during development and after adult muscle injury. HMGB1 expression in muscle cells is regulated at the translational level: the miRNA miR-1192 inhibits HMGB1 translation and the RNA-binding protein HuR promotes it. HuR binds to a cis-element, HuR binding sites (HuRBS), located in the 3'UTR of the HMGB1 transcript, and at the same time miR-1192 is recruited to an adjacent seed element. The binding of HuR to the HuRBS prevents the recruitment of Argonaute 2 (Ago2), overriding miR-1192-mediated translation inhibition. Depleting HuR reduces myoblast fusion and silencing miR-1192 re-establishes the fusion potential of HuR-depleted cells. We propose that HuR promotes the commitment of myoblasts to myogenesis by enhancing the translation of HMGB1 and suppressing the translation inhibition mediated by miR-1192.
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49
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Mourikis P, Tajbakhsh S. Distinct contextual roles for Notch signalling in skeletal muscle stem cells. BMC DEVELOPMENTAL BIOLOGY 2014; 14:2. [PMID: 24472470 PMCID: PMC3903015 DOI: 10.1186/1471-213x-14-2] [Citation(s) in RCA: 91] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/01/2013] [Accepted: 01/13/2014] [Indexed: 11/17/2022]
Abstract
Notch signalling acts in virtually every tissue during the lifetime of metazoans. Recent studies have pointed to multiple roles for Notch in stem cells during quiescence, proliferation, temporal specification, and maintenance of the niche architecture. Skeletal muscle has served as an excellent paradigm to examine these diverse roles as embryonic, foetal, and adult skeletal muscle stem cells have different molecular signatures and functional properties, reflecting their developmental specification during ontology. Notably, Notch signalling has emerged as a major regulator of all muscle stem cells. This review will provide an overview of Notch signalling during myogenic development and postnatally, and underscore the seemingly opposing contextual activities of Notch that have lead to a reassessment of its role in myogenesis.
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Affiliation(s)
| | - Shahragim Tajbakhsh
- Stem Cells and Development, CNRS URA 2578, Department of Developmental & Stem Cell Biology, Institut Pasteur, 25 rue du Dr, Roux, 75015 Paris, France.
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50
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DNA damage-activated ABL-MyoD signaling contributes to DNA repair in skeletal myoblasts. Cell Death Differ 2013; 20:1664-74. [PMID: 24056763 DOI: 10.1038/cdd.2013.118] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2012] [Revised: 05/22/2013] [Accepted: 06/21/2013] [Indexed: 12/11/2022] Open
Abstract
Previous works have established a unique function of MyoD in the control of muscle gene expression during DNA damage response in myoblasts. Phosphorylation by DNA damage-activated ABL tyrosine kinase transiently inhibits MyoD-dependent activation of transcription in response to genotoxic stress. We show here that ABL-MyoD signaling is also an essential component of the DNA repair machinery in myoblasts exposed to genotoxic stress. DNA damage promoted the recruitment of MyoD to phosphorylated Nbs1 (pNbs1)-containing repair foci, and this effect was abrogated by either ABL knockdown or the ABL kinase inhibitor imatinib. Upon DNA damage, MyoD and pNbs1 were detected on the chromatin to MyoD target genes without activating transcription. DNA damage-mediated tyrosine phosphorylation was required for MyoD recruitment to target genes, as the ABL phosphorylation-resistant MyoD mutant (MyoD Y30F) failed to bind the chromatin following DNA damage, while retaining the ability to activate transcription in response to differentiation signals. Moreover, MyoD Y30F exhibited an impaired ability to promote repair in a heterologous system, as compared with MyoD wild type (WT). Consistently, MyoD-null satellite cells (SCs) displayed impaired DNA repair that was rescued by reintroduction of MyoD WT but not by MyoD Y30F. In addition, inhibition of ABL kinase prevented MyoD WT-mediated rescue of DNA repair in MyoD-null SCs. These results identify an unprecedented contribution of MyoD to DNA repair and suggest that ABL-MyoD signaling coordinates DNA repair and transcription in myoblasts.
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