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Kim M, Jung HY, Kim B, Jo C. Laminin as a Key Extracellular Matrix for Proliferation, Differentiation, and Maturation of Porcine Muscle Stem Cell Cultivation. Food Sci Anim Resour 2024; 44:710-722. [PMID: 38765289 PMCID: PMC11097016 DOI: 10.5851/kosfa.2024.e27] [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: 03/07/2024] [Revised: 03/20/2024] [Accepted: 03/20/2024] [Indexed: 05/21/2024] Open
Abstract
Extracellular matrix (ECM) proteins play a crucial role in culturing muscle stem cells (MuSCs). However, there is a lack of extensive research on how each of these proteins influences proliferation and differentiation of MuSCs from livestock animals. Therefore, we investigated the effects of various ECM coatings-collagen, fibronectin, gelatin, and laminin-on the proliferation, differentiation, and maturation of porcine MuSCs. Porcine MuSCs, isolated from 14-day-old Berkshire piglets, were cultured on ECM-coated plates, undergoing three days of proliferation followed by three days of differentiation. MuSCs on laminin showed higher proliferation rate than others (p<0.05). There was no significant difference in the mRNA expression levels of PAX7, MYF5, and MYOD among MuSCs on laminin, collagen, and fibronectin (p>0.05). During the differentiation period, MuSCs cultured on laminin exhibited a significantly higher differentiation rate, resulting in thicker myotubes compared to those on other ECMs (p<0.05). Also, MuSCs on laminin showed higher expression of mRNA related with maturated muscle fiber such as MYH1 and MYH4 corresponding to muscle fiber type IIx and muscle fiber type IIb, respectively, compared with MuSCs on other ECM coatings (p<0.05). In summary, our comparison of ECMs revealed that laminin significantly enhances MuSC proliferation and differentiation, outperforming other ECMs. Specifically, muscle fibers cultured on laminin exhibited a more mature phenotype. These findings underscore laminin's potential to advance in vitro muscle research and cultured meat production, highlighting its role in supporting rapid cell proliferation, higher differentiation rates, and the development of mature muscle fibers.
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Affiliation(s)
- Minsu Kim
- Department of Agricultural Biotechnology, Center for Food and Bioconvergence, and Research Institute of Agriculture and Life Sciences, Seoul National University, Seoul 08826, Korea
| | - Hyun Young Jung
- Department of Agricultural Biotechnology, Center for Food and Bioconvergence, and Research Institute of Agriculture and Life Sciences, Seoul National University, Seoul 08826, Korea
| | - Beomjun Kim
- Department of Agricultural Biotechnology, Center for Food and Bioconvergence, and Research Institute of Agriculture and Life Sciences, Seoul National University, Seoul 08826, Korea
| | - Cheorun Jo
- Department of Agricultural Biotechnology, Center for Food and Bioconvergence, and Research Institute of Agriculture and Life Sciences, Seoul National University, Seoul 08826, Korea
- Institute of Green Bio Science and Technology, Seoul National University, Pyeongchang 25354, Korea
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Ehrlich M, Ehrlich KC, Lacey M, Baribault C, Sen S, Estève PO, Pradhan S. Epigenetics of Genes Preferentially Expressed in Dissimilar Cell Populations: Myoblasts and Cerebellum. EPIGENOMES 2024; 8:4. [PMID: 38390894 PMCID: PMC10885033 DOI: 10.3390/epigenomes8010004] [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: 12/12/2023] [Revised: 01/23/2024] [Accepted: 01/23/2024] [Indexed: 02/24/2024] Open
Abstract
While studying myoblast methylomes and transcriptomes, we found that CDH15 had a remarkable preference for expression in both myoblasts and cerebellum. To understand how widespread such a relationship was and its epigenetic and biological correlates, we systematically looked for genes with similar transcription profiles and analyzed their DNA methylation and chromatin state and accessibility profiles in many different cell populations. Twenty genes were expressed preferentially in myoblasts and cerebellum (Myob/Cbl genes). Some shared DNA hypo- or hypermethylated regions in myoblasts and cerebellum. Particularly striking was ZNF556, whose promoter is hypomethylated in expressing cells but highly methylated in the many cell populations that do not express the gene. In reporter gene assays, we demonstrated that its promoter's activity is methylation sensitive. The atypical epigenetics of ZNF556 may have originated from its promoter's hypomethylation and selective activation in sperm progenitors and oocytes. Five of the Myob/Cbl genes (KCNJ12, ST8SIA5, ZIC1, VAX2, and EN2) have much higher RNA levels in cerebellum than in myoblasts and displayed myoblast-specific hypermethylation upstream and/or downstream of their promoters that may downmodulate expression. Differential DNA methylation was associated with alternative promoter usage for Myob/Cbl genes MCF2L, DOK7, CNPY1, and ANK1. Myob/Cbl genes PAX3, LBX1, ZNF556, ZIC1, EN2, and VAX2 encode sequence-specific transcription factors, which likely help drive the myoblast and cerebellum specificity of other Myob/Cbl genes. This study extends our understanding of epigenetic/transcription associations related to differentiation and may help elucidate relationships between epigenetic signatures and muscular dystrophies or cerebellar-linked neuropathologies.
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Affiliation(s)
- Melanie Ehrlich
- Tulane Cancer Center, Hayward Human Genetics Center, Center for Bioinformatics and Genomics, Tulane University Health Sciences Center, New Orleans, LA 70112, USA
- Center for Bioinformatics and Genomics, Tulane University Health Sciences Center, New Orleans, LA 70112, USA
| | - Kenneth C Ehrlich
- Center for Bioinformatics and Genomics, Tulane University Health Sciences Center, New Orleans, LA 70112, USA
| | - Michelle Lacey
- Department of Mathematics, Tulane University, New Orleans, LA 70118, USA
| | - Carl Baribault
- Information Technology, Tulane University, New Orleans, LA 70118, USA
| | - Sagnik Sen
- Genome Biology Division, New England Biolabs, Ipswich, MA 01938, USA
| | | | - Sriharsa Pradhan
- Genome Biology Division, New England Biolabs, Ipswich, MA 01938, USA
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3
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Sroka MW, Skopelitis D, Vermunt MW, Preall JB, El Demerdash O, de Almeida LMN, Chang K, Utama R, Gryder B, Caligiuri G, Ren D, Nalbant B, Milazzo JP, Tuveson DA, Dobin A, Hiebert SW, Stengel KR, Mantovani R, Khan J, Kohli RM, Shi J, Blobel GA, Vakoc CR. Myo-differentiation reporter screen reveals NF-Y as an activator of PAX3-FOXO1 in rhabdomyosarcoma. Proc Natl Acad Sci U S A 2023; 120:e2303859120. [PMID: 37639593 PMCID: PMC10483665 DOI: 10.1073/pnas.2303859120] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2023] [Accepted: 07/11/2023] [Indexed: 08/31/2023] Open
Abstract
Recurrent chromosomal rearrangements found in rhabdomyosarcoma (RMS) produce the PAX3-FOXO1 fusion protein, which is an oncogenic driver and a dependency in this disease. One important function of PAX3-FOXO1 is to arrest myogenic differentiation, which is linked to the ability of RMS cells to gain an unlimited proliferation potential. Here, we developed a phenotypic screening strategy for identifying factors that collaborate with PAX3-FOXO1 to block myo-differentiation in RMS. Unlike most genes evaluated in our screen, we found that loss of any of the three subunits of the Nuclear Factor Y (NF-Y) complex leads to a myo-differentiation phenotype that resembles the effect of inactivating PAX3-FOXO1. While the transcriptomes of NF-Y- and PAX3-FOXO1-deficient RMS cells bear remarkable similarity to one another, we found that these two transcription factors occupy nonoverlapping sites along the genome: NF-Y preferentially occupies promoters, whereas PAX3-FOXO1 primarily binds to distal enhancers. By integrating multiple functional approaches, we map the PAX3 promoter as the point of intersection between these two regulators. We show that NF-Y occupies CCAAT motifs present upstream of PAX3 to function as a transcriptional activator of PAX3-FOXO1 expression in RMS. These findings reveal a critical upstream role of NF-Y in the oncogenic PAX3-FOXO1 pathway, highlighting how a broadly essential transcription factor can perform tumor-specific roles in governing cellular state.
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Affiliation(s)
| | | | - Marit W. Vermunt
- Division of Hematology, The Children’s Hospital of Philadelphia, Philadelphia, PA19104
| | | | | | | | - Kenneth Chang
- Cold Spring Harbor Laboratory, Cold Spring Harbor, NY11724
| | - Raditya Utama
- Cold Spring Harbor Laboratory, Cold Spring Harbor, NY11724
| | - Berkley Gryder
- Department of Genetics and Genome Sciences, Case Western Reserve University, Cleveland, OH44106
| | | | - Diqiu Ren
- Department of Cancer Biology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA19104
| | - Benan Nalbant
- Cold Spring Harbor Laboratory, Cold Spring Harbor, NY11724
| | | | | | | | - Scott W. Hiebert
- Department of Biochemistry, Vanderbilt University School of Medicine, Nashville, TN37232
| | - Kristy R. Stengel
- Department of Cell Biology, Albert Einstein College of Medicine, New York, NY10461
| | - Roberto Mantovani
- Dipartimento di Bioscienze, Università degli Studi di Milano, 20133Milano, Italy
| | - Javed Khan
- Genetics Branch, National Cancer Institute, NIH, Bethesda, MD20892
| | - Rahul M. Kohli
- Department of Biochemistry and Biophysics, University of Pennsylvania, Philadelphia, PA19104
| | - Junwei Shi
- Department of Cancer Biology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA19104
| | - Gerd A. Blobel
- Division of Hematology, The Children’s Hospital of Philadelphia, Philadelphia, PA19104
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Zhi S, Wang J, Wang Y, Yang L, Qin C, Yan X, Zhao M, Liu M, Qu L, Nie G. Establishment and characterization of Yellow River carp (Cyprinus carpio haematopterus) muscle cell line and its application to fish virology and immunology. FISH & SHELLFISH IMMUNOLOGY 2023; 139:108859. [PMID: 37277052 DOI: 10.1016/j.fsi.2023.108859] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/11/2023] [Revised: 05/27/2023] [Accepted: 05/29/2023] [Indexed: 06/07/2023]
Abstract
The Yellow River carp (Cyprinus carpio haematopterus) is a vital economically farmed fish of the Cyprinidae family. With the development of intensive aquaculture, carp production has increased dramatically, leading to the frequent occurrence of various diseases. Cell lines are considered the most cost-effective resource for in vitro studies and are widely used for physiological and pathological studies because of accessibility and convenience. This research established a novel immortal cell line CCM (Yellow River carp muscle cells) derived from the carp muscle. CCM has been passed over 71 generations for 1 year. The morphology of CCM and the adhesion and extension processes were captured by light and electron microscopy. CCM were passaged every 3 days with 20% FBS DMEM/F12 at 1:3. The optimum conditions for CCM growth were 28 °C and 20% FBS concentration. DNA sequencing of 16S rRNA and COI showed that CCM was derived from carp. CCM positively reacts to anti-PAX7 and anti-MyoD antibodies of carp. Analysis of chromosomes revealed that the chromosomal pattern number of CCM was 100. Transfection experiment demonstrated that CCM might be utilized to express foreign genes. Furthermore, cytotoxicity testing showed that CCM was susceptible to Aeromonas hydrophila, Aeromonas salmonicida, Aeromonas veronii, and Staphylococcus Aureus. The organophosphate pesticides (chlorpyrifos and glyphosate) or heavy metals (Hg, Cd, and Cu) exhibited dose-dependent cytotoxicity against CCM. After LPS treatment, the MyD88-IRAKs-NFκB pathway stimulates inflammatory-related factor il1β, il8, il10, and nfκb expression. LPS did not seem to cause oxidative stress in CCM, and the expression of cat and sod was not affected. Poly (I:C) through TLR3-TRIF-MyD88-TRAF6-NFκB and TRIF-TRAF3-TBK1-IRF3 activated the transcription of related factors, increased expression of anti-viral protein, but no changes in apoptosis-related genes. To our knowledge, this is the first muscle cell line in Yellow River carp and the first study on the immune response signal pathways of Yellow River carp based on the muscle cell line. CCM cell line provides a more rapid and efficient experimental material for fish immunology research, and this study preliminarily elucidated its immune response strategy to LPS and poly (I:C).
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Affiliation(s)
- Shaoyang Zhi
- College of Fisheries, Engineering Technology Research Center of Henan Province for Aquatic Animal Cultivation, Henan Normal University, No. 46 Jianshe Road, Xinxiang, 453007, PR China.
| | - Junli Wang
- College of Fisheries, Engineering Technology Research Center of Henan Province for Aquatic Animal Cultivation, Henan Normal University, No. 46 Jianshe Road, Xinxiang, 453007, PR China.
| | - Yiran Wang
- College of Fisheries, Engineering Technology Research Center of Henan Province for Aquatic Animal Cultivation, Henan Normal University, No. 46 Jianshe Road, Xinxiang, 453007, PR China.
| | - Liping Yang
- College of Fisheries, Engineering Technology Research Center of Henan Province for Aquatic Animal Cultivation, Henan Normal University, No. 46 Jianshe Road, Xinxiang, 453007, PR China.
| | - Chaobin Qin
- College of Fisheries, Engineering Technology Research Center of Henan Province for Aquatic Animal Cultivation, Henan Normal University, No. 46 Jianshe Road, Xinxiang, 453007, PR China.
| | - Xiao Yan
- College of Fisheries, Engineering Technology Research Center of Henan Province for Aquatic Animal Cultivation, Henan Normal University, No. 46 Jianshe Road, Xinxiang, 453007, PR China.
| | - Mengjuan Zhao
- College of Fisheries, Engineering Technology Research Center of Henan Province for Aquatic Animal Cultivation, Henan Normal University, No. 46 Jianshe Road, Xinxiang, 453007, PR China.
| | - Mingyu Liu
- College of Fisheries, Engineering Technology Research Center of Henan Province for Aquatic Animal Cultivation, Henan Normal University, No. 46 Jianshe Road, Xinxiang, 453007, PR China.
| | - Leya Qu
- College of Fisheries, Engineering Technology Research Center of Henan Province for Aquatic Animal Cultivation, Henan Normal University, No. 46 Jianshe Road, Xinxiang, 453007, PR China.
| | - Guoxing Nie
- College of Fisheries, Engineering Technology Research Center of Henan Province for Aquatic Animal Cultivation, Henan Normal University, No. 46 Jianshe Road, Xinxiang, 453007, PR China.
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Bosco F, Guarnieri L, Nucera S, Scicchitano M, Ruga S, Cardamone A, Maurotti S, Russo C, Coppoletta AR, Macrì R, Bava I, Scarano F, Castagna F, Serra M, Caminiti R, Maiuolo J, Oppedisano F, Ilari S, Lauro F, Giancotti L, Muscoli C, Carresi C, Palma E, Gliozzi M, Musolino V, Mollace V. Pathophysiological Aspects of Muscle Atrophy and Osteopenia Induced by Chronic Constriction Injury (CCI) of the Sciatic Nerve in Rats. Int J Mol Sci 2023; 24:ijms24043765. [PMID: 36835176 PMCID: PMC9962869 DOI: 10.3390/ijms24043765] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2023] [Revised: 02/02/2023] [Accepted: 02/09/2023] [Indexed: 02/16/2023] Open
Abstract
Skeletal muscle atrophy is a condition characterized by a loss of muscle mass and muscle strength caused by an imbalance between protein synthesis and protein degradation. Muscle atrophy is often associated with a loss of bone mass manifesting as osteoporosis. The aim of this study was to evaluate if chronic constriction injury (CCI) of the sciatic nerve in rats can be a valid model to study muscle atrophy and consequent osteoporosis. Body weight and body composition were assessed weekly. Magnetic resonance imaging (MRI) was performed on day zero before ligation and day 28 before sacrifice. Catabolic markers were assessed via Western blot and Quantitative Real-time PCR. After the sacrifice, a morphological analysis of the gastrocnemius muscle and Micro-Computed Tomography (Micro-CT) on the tibia bone were performed. Rats that underwent CCI had a lower body weight increase on day 28 compared to the naive group of rats (p < 0.001). Increases in lean body mass and fat mass were also significantly lower in the CCI group (p < 0.001). The weight of skeletal muscles was found to be significantly lower in the ipsilateral hindlimb compared to that of contralateral muscles; furthermore, the cross-sectional area of muscle fibers decreased significantly in the ipsilateral gastrocnemius. The CCI of the sciatic nerve induced a statistically significant increase in autophagic and UPS (Ubiquitin Proteasome System) markers and a statistically significant increase in Pax-7 (Paired Box-7) expression. Micro-CT showed a statistically significant decrease in the bone parameters of the ipsilateral tibial bone. Chronic nerve constriction appeared to be a valid model for inducing the condition of muscle atrophy, also causing changes in bone microstructure and leading to osteoporosis. Therefore, sciatic nerve constriction could be a valid approach to study muscle-bone crosstalk and to identify new strategies to prevent osteosarcopenia.
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Affiliation(s)
- Francesca Bosco
- Department of Health Sciences, Institute of Research for Food Safety and Health (IRC-FSH), University Magna Graecia of Catanzaro, 88100 Catanzaro, Italy
- Correspondence: (F.B.); (M.G.)
| | - Lorenza Guarnieri
- Department of Health Sciences, Institute of Research for Food Safety and Health (IRC-FSH), University Magna Graecia of Catanzaro, 88100 Catanzaro, Italy
| | - Saverio Nucera
- Department of Health Sciences, Institute of Research for Food Safety and Health (IRC-FSH), University Magna Graecia of Catanzaro, 88100 Catanzaro, Italy
| | - Miriam Scicchitano
- Department of Health Sciences, Institute of Research for Food Safety and Health (IRC-FSH), University Magna Graecia of Catanzaro, 88100 Catanzaro, Italy
| | - Stefano Ruga
- Department of Health Sciences, Institute of Research for Food Safety and Health (IRC-FSH), University Magna Graecia of Catanzaro, 88100 Catanzaro, Italy
| | - Antonio Cardamone
- Department of Health Sciences, Institute of Research for Food Safety and Health (IRC-FSH), University Magna Graecia of Catanzaro, 88100 Catanzaro, Italy
| | - Samantha Maurotti
- Department of Medical and Surgical Science, University Magna Grecia, 88100 Catanzaro, Italy
| | - Cristina Russo
- Department of Medical and Surgical Science, University Magna Grecia, 88100 Catanzaro, Italy
| | - Anna Rita Coppoletta
- Department of Health Sciences, Institute of Research for Food Safety and Health (IRC-FSH), University Magna Graecia of Catanzaro, 88100 Catanzaro, Italy
| | - Roberta Macrì
- Department of Health Sciences, Institute of Research for Food Safety and Health (IRC-FSH), University Magna Graecia of Catanzaro, 88100 Catanzaro, Italy
| | - Irene Bava
- Department of Health Sciences, Institute of Research for Food Safety and Health (IRC-FSH), University Magna Graecia of Catanzaro, 88100 Catanzaro, Italy
| | - Federica Scarano
- Department of Health Sciences, Institute of Research for Food Safety and Health (IRC-FSH), University Magna Graecia of Catanzaro, 88100 Catanzaro, Italy
| | - Fabio Castagna
- Department of Health Sciences, Institute of Research for Food Safety and Health (IRC-FSH), University Magna Graecia of Catanzaro, 88100 Catanzaro, Italy
| | - Maria Serra
- Department of Health Sciences, Institute of Research for Food Safety and Health (IRC-FSH), University Magna Graecia of Catanzaro, 88100 Catanzaro, Italy
| | - Rosamaria Caminiti
- Department of Health Sciences, Institute of Research for Food Safety and Health (IRC-FSH), University Magna Graecia of Catanzaro, 88100 Catanzaro, Italy
| | - Jessica Maiuolo
- Laboratory of Pharmaceutical Biology, Department of Health Sciences, Institute of Research for Food Safety and Health (IRC-FSH) Center, University Magna Graecia of Catanzaro, 88100 Catanzaro, Italy
| | - Francesca Oppedisano
- Department of Health Sciences, Institute of Research for Food Safety and Health (IRC-FSH), University Magna Graecia of Catanzaro, 88100 Catanzaro, Italy
| | - Sara Ilari
- Department of Health Sciences, Institute of Research for Food Safety and Health (IRC-FSH), University Magna Graecia of Catanzaro, 88100 Catanzaro, Italy
| | - Filomena Lauro
- Henry and Amelia Nasrallah Center for Neuroscience, Department of Pharmacology and Physiology, Saint Louis University School of Medicine, Grand Blvd, St. Louis, MO 63104, USA
| | - Luigi Giancotti
- Henry and Amelia Nasrallah Center for Neuroscience, Department of Pharmacology and Physiology, Saint Louis University School of Medicine, Grand Blvd, St. Louis, MO 63104, USA
| | - Carolina Muscoli
- Department of Health Sciences, Institute of Research for Food Safety and Health (IRC-FSH), University Magna Graecia of Catanzaro, 88100 Catanzaro, Italy
| | - Cristina Carresi
- Department of Health Sciences, Institute of Research for Food Safety and Health (IRC-FSH), University Magna Graecia of Catanzaro, 88100 Catanzaro, Italy
| | - Ernesto Palma
- Department of Health Sciences, Institute of Research for Food Safety and Health (IRC-FSH), University Magna Graecia of Catanzaro, 88100 Catanzaro, Italy
| | - Micaela Gliozzi
- Department of Health Sciences, Institute of Research for Food Safety and Health (IRC-FSH), University Magna Graecia of Catanzaro, 88100 Catanzaro, Italy
- Correspondence: (F.B.); (M.G.)
| | - Vincenzo Musolino
- Laboratory of Pharmaceutical Biology, Department of Health Sciences, Institute of Research for Food Safety and Health (IRC-FSH) Center, University Magna Graecia of Catanzaro, 88100 Catanzaro, Italy
| | - Vincenzo Mollace
- Department of Health Sciences, Institute of Research for Food Safety and Health (IRC-FSH), University Magna Graecia of Catanzaro, 88100 Catanzaro, Italy
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Azhar M, Wardhani BWK, Renesteen E. The regenerative potential of Pax3/Pax7 on skeletal muscle injury. J Genet Eng Biotechnol 2022; 20:143. [PMID: 36251225 PMCID: PMC9574840 DOI: 10.1186/s43141-022-00429-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2022] [Accepted: 10/08/2022] [Indexed: 11/30/2022]
Abstract
Background
Skeletal muscle mishaps are the most well-known incidents in society, especially among athletes and the military population. From the various urgency, this accident needs to be cured more quickly. However, the current treatment still has some shortcomings and is less effective. In this case, Paired box 3 and Paired box 7 (Pax3/Pax7) proteins that induce stem cells could potentially be an alternative treatment for skeletal muscle injuries. This paper aimed to analyse the potential treatment of Pax3/Pax7 proteins inducing the stem cell for skeletal muscle injuries. The main body of the abstract We did a narrative review by gathering several scientific journals from several leading platforms like PubMed and Scopus. As common accidents, skeletal muscle disease could be due to workplace and non-workplace causes. The highest risk occurs in the athlete and military environment. The treatment of current skeletal muscle injuries is protection, rest, ice, compression, and elevation (PRICE), non-steroidal anti-inflammatory drugs (NSAIDs), and mechanical stimulation. However, it is considered less effective, especially in NSAIDs, inhibiting myogenic cell proliferation. The current finding indicates that the stem cells have markers known as Pax3/Pax7. The role of both markers in muscle injury, Pax3/Pax7, as transcription factors will induce cell division by H3K4 methylation mechanisms and chromatin modifications that stimulate gene activation. Conclusion Regulation by Pax3/Pax7 factors that affect stem cells and stem cell proliferation is one of the alternative treatments. This regulation can accelerate the healing of injury victims, especially injuries to the skeletal muscles. Finally, after being compared, Pax3/Pax7 induces stem cells to have the potential to be one of the skeletal muscle injury treatments. Keywords Pax3 and Pax7, Pax3/Pax7, Skeletal muscle, Athlete, Stem cells, Cell proliferation, Injuries.
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Affiliation(s)
- Muhamad Azhar
- Faculty of Military Pharmacy, The Republic of Indonesia Defense University, Bogor, 16810, West Java, Indonesia
| | | | - Editha Renesteen
- Faculty of Military Pharmacy, The Republic of Indonesia Defense University, Bogor, 16810, West Java, Indonesia.
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Florkowska A, Meszka I, Nowacka J, Granica M, Jablonska Z, Zawada M, Truszkowski L, Ciemerych MA, Grabowska I. PAX7 Balances the Cell Cycle Progression via Regulating Expression of Dnmt3b and Apobec2 in Differentiating PSCs. Cells 2021; 10:2205. [PMID: 34571854 PMCID: PMC8472244 DOI: 10.3390/cells10092205] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Revised: 08/04/2021] [Accepted: 08/23/2021] [Indexed: 12/03/2022] Open
Abstract
PAX7 transcription factor plays a crucial role in embryonic myogenesis and in adult muscles in which it secures proper function of satellite cells, including regulation of their self renewal. PAX7 downregulation is necessary for the myogenic differentiation of satellite cells induced after muscle damage, what is prerequisite step for regeneration. Using differentiating pluripotent stem cells we documented that the absence of functional PAX7 facilitates proliferation. Such action is executed by the modulation of the expression of two proteins involved in the DNA methylation, i.e., Dnmt3b and Apobec2. Increase in Dnmt3b expression led to the downregulation of the CDK inhibitors and facilitated cell cycle progression. Changes in Apobec2 expression, on the other hand, differently impacted proliferation/differentiation balance, depending on the experimental model used.
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Affiliation(s)
| | | | | | | | | | | | | | | | - Iwona Grabowska
- Department of Cytology, Institute of Developmental Biology and Biomedical Sciences, Faculty of Biology, University of Warsaw, Miecznikowa 1, 02-096 Warsaw, Poland; (A.F.); (I.M.); (J.N.); (M.G.); (Z.J.); (M.Z.); (L.T.); (M.A.C.)
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Banerji CRS, Zammit PS. Pathomechanisms and biomarkers in facioscapulohumeral muscular dystrophy: roles of DUX4 and PAX7. EMBO Mol Med 2021; 13:e13695. [PMID: 34151531 PMCID: PMC8350899 DOI: 10.15252/emmm.202013695] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2020] [Revised: 03/27/2021] [Accepted: 03/30/2021] [Indexed: 12/29/2022] Open
Abstract
Facioscapulohumeral muscular dystrophy (FSHD) is characterised by progressive skeletal muscle weakness and wasting. FSHD is linked to epigenetic derepression of the subtelomeric D4Z4 macrosatellite at chromosome 4q35. Epigenetic derepression permits the distal-most D4Z4 unit to transcribe DUX4, with transcripts stabilised by splicing to a poly(A) signal on permissive 4qA haplotypes. The pioneer transcription factor DUX4 activates target genes that are proposed to drive FSHD pathology. While this toxic gain-of-function model is a satisfying "bottom-up" genotype-to-phenotype link, DUX4 is rarely detectable in muscle and DUX4 target gene expression is inconsistent in patients. A reliable biomarker for FSHD is suppression of a target gene score of PAX7, a master regulator of myogenesis. However, it is unclear how this "top-down" finding links to genomic changes that characterise FSHD and to DUX4. Here, we explore the roles and interactions of DUX4 and PAX7 in FSHD pathology and how the relationship between these two transcription factors deepens understanding via the immune system and muscle regeneration. Considering how FSHD pathomechanisms are represented by "DUX4opathy" models has implications for developing therapies and current clinical trials.
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Affiliation(s)
| | - Peter S Zammit
- Randall Centre for Cell and Molecular BiophysicsKing's College LondonLondonUK
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9
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Isesele PO, Mazurak VC. Regulation of Skeletal Muscle Satellite Cell Differentiation by Omega-3 Polyunsaturated Fatty Acids: A Critical Review. Front Physiol 2021; 12:682091. [PMID: 34149458 PMCID: PMC8209368 DOI: 10.3389/fphys.2021.682091] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2021] [Accepted: 04/30/2021] [Indexed: 12/17/2022] Open
Abstract
Skeletal muscle is composed of multinuclear cells called myofibres, which are formed by the fusion of myoblasts during development. The size of the muscle fiber and mass of skeletal muscle are altered in response to several pathological and physiological conditions. Skeletal muscle regeneration is primarily mediated by muscle stem cells called satellite cells (SCs). In response to injury, these SCs replenish myogenic progenitor cells to form new myofibers to repair damaged muscle. During myogenesis, activated SCs proliferate and differentiate to myoblast and then fuse with one another to form muscle fibers. A reduced number of SCs and an inability to undergo myogenesis may contribute to skeletal muscle disorders such as atrophy, cachexia, and sarcopenia. Myogenic regulatory factors (MRF) are transcription factors that regulate myogenesis and determines whether SCs will be in the quiescent, activated, committed, or differentiated state. Mitochondria oxidative phosphorylation and oxidative stress play a role in the determination of the fate of SCs. The potential activation and function of SCs are also affected by inflammation during skeletal muscle regeneration. Omega-3 polyunsaturated fatty acids (PUFAs) show promise to reduce inflammation, maintain muscle mass during aging, and increase the functional capacity of the muscle. The aim of this critical review is to highlight the role of omega-3 PUFAs on the myogenic differentiation of SCs and pathways affected during the differentiation process, including mitochondrial function and inflammation from the current body of literature.
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Affiliation(s)
- Peter O Isesele
- Division of Human Nutrition, Faculty of Agricultural, Life and Environmental Sciences, University of Alberta, Edmonton, AB, Canada
| | - Vera C Mazurak
- Division of Human Nutrition, Faculty of Agricultural, Life and Environmental Sciences, University of Alberta, Edmonton, AB, Canada
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10
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Kim DH, Choi YM, Suh Y, Shin S, Lee J, Hwang S, Lee SS, Lee K. Research Note: Increased myostatin expression and decreased expression of myogenic regulatory factors in embryonic ages in a quail line with muscle hypoplasia. Poult Sci 2021; 100:100978. [PMID: 33588344 PMCID: PMC7896188 DOI: 10.1016/j.psj.2021.01.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2020] [Revised: 11/30/2020] [Accepted: 01/07/2021] [Indexed: 11/16/2022] Open
Abstract
Genetic selection of quail for a low body weight for more than 80 generations established a low-weight (LW) Japanese quail line that has been previously characterized to have a muscle hypoplasia phenotype. The aim of this study is to investigate the relationship of temporal expression levels of myostatin (Mstn) and myogenic regulatory factors (MRFs) with hypoplastic muscle growth in the LW line. During embryonic day (E) 13 to 15, gain of embryo weight was 2-fold lower (P < 0.001) in the LW line than that in the random bred control (CON). Gains in body weight and pectoralis muscle weight from hatch to posthatch day (P) 28 were also significantly lower (P < 0.01) in the LW line but increased by 4-fold (P < 0.05) during P42 to P75. PCR analysis showed that expression levels of Mstn were greater in the LW at embryonic stage (E12 to E14, P < 0.05), but there was no difference after hatch. In addition, expression levels of Pax7 and myogenin (MyoG) at E12 were 23-fold (P < 0.05) and 3.4-fold (P < 0.05) lesser in the LW line, respectively. At E14, expression of Pax3, Pax7, and MyoG gene was 3.5-fold (P < 0.05), 6.5-fold (P = 0.065), and 4.4-fold (P < 0.01) less than that in the CON. Taken together, high expression levels of Mstn and low expression of MRFs during embryonic stages can be associated with development of muscle hypoplasia and delayed muscle growth in the LW quail line. These data provide evidence that genetic selection for a low body weight resulting in an avian model with muscle hypoplasia has altered the expression profiles of myogenic factors.
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Affiliation(s)
- Dong-Hwan Kim
- Department of Animal Sciences, The Ohio State University, Columbus OH 43210, USA
| | - Young Min Choi
- Department of Animal Sciences, Kyungpook National University, Sangju 37224, South Korea
| | - Yeunsu Suh
- Department of Animal Sciences, The Ohio State University, Columbus OH 43210, USA
| | - Sangsu Shin
- Department of Animal Biotechnology, Kyungpook National University, Sangju 37224, South Korea
| | - Joonbum Lee
- Department of Animal Sciences, The Ohio State University, Columbus OH 43210, USA; Interdisciplinary Ph.D. Program in Nutrition, The Ohio State University, Columbus, OH 43210, USA
| | - Seongsoo Hwang
- Animal Biotechnology Division, National Institute of Animal Science, RDA, Wanju-gun, Jeonbuk 55365, Republic of Korea
| | - Sang Suk Lee
- Department of Animal Science and Technology, Sunchon National University, Jeonnam 57922, South Korea
| | - Kichoon Lee
- Department of Animal Sciences, The Ohio State University, Columbus OH 43210, USA; Interdisciplinary Ph.D. Program in Nutrition, The Ohio State University, Columbus, OH 43210, USA.
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11
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Zhao X, Zhu R, Wang Y, Qi J, Wang J, Bai L, Wang H, Wu Y, Hu H. Differentiation proliferative capacity of skeletal muscle satellite cells from Dapulian and Landrace pigs. ITALIAN JOURNAL OF ANIMAL SCIENCE 2020. [DOI: 10.1080/1828051x.2020.1769511] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- Xueyan Zhao
- Shandong Provincial Key Laboratory of Animal Disease Control and Breeding, Institute of Animal Science and Veterinary Medicine, Shandong Academy of Agricultural Sciences, Jinan, China
| | - Rongsheng Zhu
- Shandong Provincial Key Laboratory of Animal Disease Control and Breeding, Institute of Animal Science and Veterinary Medicine, Shandong Academy of Agricultural Sciences, Jinan, China
| | - Yanping Wang
- Shandong Provincial Key Laboratory of Animal Disease Control and Breeding, Institute of Animal Science and Veterinary Medicine, Shandong Academy of Agricultural Sciences, Jinan, China
| | - Jing Qi
- Shandong Provincial Key Laboratory of Animal Disease Control and Breeding, Institute of Animal Science and Veterinary Medicine, Shandong Academy of Agricultural Sciences, Jinan, China
| | - Jiying Wang
- Shandong Provincial Key Laboratory of Animal Disease Control and Breeding, Institute of Animal Science and Veterinary Medicine, Shandong Academy of Agricultural Sciences, Jinan, China
| | - Liya Bai
- Shandong Provincial Key Laboratory of Animal Disease Control and Breeding, Institute of Animal Science and Veterinary Medicine, Shandong Academy of Agricultural Sciences, Jinan, China
| | - Huaizhong Wang
- Shandong Provincial Key Laboratory of Animal Disease Control and Breeding, Institute of Animal Science and Veterinary Medicine, Shandong Academy of Agricultural Sciences, Jinan, China
| | - Ying Wu
- Shandong Provincial Key Laboratory of Animal Disease Control and Breeding, Institute of Animal Science and Veterinary Medicine, Shandong Academy of Agricultural Sciences, Jinan, China
| | - Hongmei Hu
- Shandong Provincial Key Laboratory of Animal Disease Control and Breeding, Institute of Animal Science and Veterinary Medicine, Shandong Academy of Agricultural Sciences, Jinan, China
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12
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Kim H, Selvaraj S, Kiley J, Azzag K, Garay BI, Perlingeiro RCR. Genomic Safe Harbor Expression of PAX7 for the Generation of Engraftable Myogenic Progenitors. Stem Cell Reports 2020; 16:10-19. [PMID: 33275879 PMCID: PMC7815936 DOI: 10.1016/j.stemcr.2020.11.001] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2020] [Revised: 11/01/2020] [Accepted: 11/02/2020] [Indexed: 12/16/2022] Open
Abstract
Inducible expression of PAX7 in differentiating pluripotent stem cells (PSCs) allows massively scalable generation of human myogenic progenitors, which upon transplantation into dystrophic muscles give rise to donor-derived myofibers and satellite cells. Therefore, PSC-derived PAX7+ myogenic progenitors represent an attractive therapeutic approach to promote muscle regeneration. Work to date has used lentiviral vectors (LVs) that randomly integrate inducible PAX7 transgenes. Here, we investigated whether equivalent induction of the myogenic program could be achieved by targeting the PAX7 transgene into genomic safe harbor (GSH) sites. Across multiple PSC lines, we find that this approach consistently generates expandable myogenic progenitors in vitro, although scalability of expansion is moderately reduced compared with the LV approach. Importantly, transplantation of GSH-targeted myogenic progenitors produces robust engraftment, comparable with LV counterparts. These findings provide proof of concept for the use of GSH targeting as a potential alternative approach to generate therapeutic PSC-derived myogenic progenitors for clinical applications.
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Affiliation(s)
- Hyunkee Kim
- Lillehei Heart Institute, Department of Medicine, University of Minnesota, 4-128 CCRB, 2231 6th Street SE, Minneapolis, MN 55455, USA; Department of Genetic, Cell Biology, and Development, University of Minnesota, Minneapolis, MN, USA
| | - Sridhar Selvaraj
- Lillehei Heart Institute, Department of Medicine, University of Minnesota, 4-128 CCRB, 2231 6th Street SE, Minneapolis, MN 55455, USA; Department of Genetic, Cell Biology, and Development, University of Minnesota, Minneapolis, MN, USA
| | - James Kiley
- Lillehei Heart Institute, Department of Medicine, University of Minnesota, 4-128 CCRB, 2231 6th Street SE, Minneapolis, MN 55455, USA
| | - Karim Azzag
- Lillehei Heart Institute, Department of Medicine, University of Minnesota, 4-128 CCRB, 2231 6th Street SE, Minneapolis, MN 55455, USA
| | - Bayardo I Garay
- Lillehei Heart Institute, Department of Medicine, University of Minnesota, 4-128 CCRB, 2231 6th Street SE, Minneapolis, MN 55455, USA
| | - Rita C R Perlingeiro
- Lillehei Heart Institute, Department of Medicine, University of Minnesota, 4-128 CCRB, 2231 6th Street SE, Minneapolis, MN 55455, USA; Department of Genetic, Cell Biology, and Development, University of Minnesota, Minneapolis, MN, USA; Stem Cell Institute, University of Minnesota, Minneapolis, MN, USA.
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13
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Su S, Wang Y, Chen C, Suh M, Azain M, Kim WK. Fatty Acid Composition and Regulatory Gene Expression in Late-Term Embryos of ACRB and COBB Broilers. Front Vet Sci 2020; 7:317. [PMID: 32671107 PMCID: PMC7330006 DOI: 10.3389/fvets.2020.00317] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2020] [Accepted: 05/07/2020] [Indexed: 12/20/2022] Open
Abstract
Cobb broilers (COBB) have been heavily selected for their production performance in the past several decades, while the Athens Canadian Random Bred (ACRB) chickens, a meat-type breed, have been kept as a non-selected control strain. The purpose of this study was to compare these two lines of chickens at late embryonic development and identify the molecular markers and fatty acid profiles underlining their differences in growth performance due to selection. Fertilized eggs of the ACRB (n = 6) and COBB (n = 6) were used at 14 and 18 embryonic days. Genes involved in lipogenesis and myogenesis were measured using quantitative real-time reverse transcroption-polymerase chain reaction (RT-PCR), and fatty acid (FA) compositions of egg yolk, muscle, and liver were measured using gas chromatography. COBB had higher egg weight, embryo weight, and breast and fat ratio. The gene expression in the liver showed an interaction between age and breed on FASN expression, with the highest level in COBB at E18. ACRB had higher ApoB and MTTP expression, but lower SREBP-1 expression compared to COBB. No difference was found in myogenesis gene expression in the muscle between two breeds. For the FA composition, muscle was largely affected by both breed and age. Yolk and liver were affected mainly by breed and age, respectively. Constant interaction effects in docosahexaenoic acid (DHA), indicating the highest level in all the tested tissues of ACRB at E14 and the constant main effects with higher myristic, palmitic, and gondoic, but lower linolenic acid in the liver and yolk of COBB compared to the levels in those of ACRB. Finally, fat accumulation in the liver had no obvious difference between the breeds but was higher when embryo was older. In conclusion, broiler breed affects egg, embryo, and tissue weight, as well as FA composition in initial egg yolk and throughout the embryonic development. The highest docosahexaenoic percentage was observed in ACRB, indicating that genetic selection may result in fatty acid profile changes such as lower DHA content in chicken tissues and eggs.
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Affiliation(s)
- Shengchen Su
- Department of Poultry Science, University of Georgia, Athens, GA, United States
| | - Yidi Wang
- Department of Food and Human Nutritional Sciences, University of Manitoba, Winnipeg, MB, Canada.,Division of Neurodegenerative Disorders & Canadian Centre for Agri-Food Research in Health and Medicine, St. Boniface Hospital Albrechtsen Research Centre, Winnipeg, MB, Canada
| | - Chongxiao Chen
- Department of Poultry Science, University of Georgia, Athens, GA, United States
| | - Miyoung Suh
- Department of Food and Human Nutritional Sciences, University of Manitoba, Winnipeg, MB, Canada.,Division of Neurodegenerative Disorders & Canadian Centre for Agri-Food Research in Health and Medicine, St. Boniface Hospital Albrechtsen Research Centre, Winnipeg, MB, Canada
| | - Michael Azain
- Department of Animal and Dairy Science, University of Georgia, Athens, GA, United States
| | - Woo Kyun Kim
- Department of Poultry Science, University of Georgia, Athens, GA, United States
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14
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Tokutake Y, Yamada K, Hayashi S, Arai W, Watanabe T, Yonekura S. IRE1-XBP1 Pathway of the Unfolded Protein Response Is Required during Early Differentiation of C2C12 Myoblasts. Int J Mol Sci 2019; 21:ijms21010182. [PMID: 31888027 PMCID: PMC6981822 DOI: 10.3390/ijms21010182] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2019] [Revised: 12/20/2019] [Accepted: 12/24/2019] [Indexed: 12/14/2022] Open
Abstract
In skeletal muscle, myoblast differentiation results in the formation of multinucleated myofibers. Although recent studies have shown that unfolded protein responses (UPRs) play an important role in intracellular remodeling and contribute to skeletal muscle differentiation, the involvement of IRE1-XBP1 signaling, a major UPR signaling pathway, remains unclear. This study aimed to investigate the effect of the IRE1-XBP1 pathway on skeletal muscle differentiation. In C2C12 cells, knockdown of IRE1 and XBP1 in cells remarkably suppressed differentiation. In addition, apoptosis and autophagy were dramatically enhanced in the XBP1-knockdown cells, highlighting the participation of IRE1-XBP1 in cell survival maintenance with differentiation stimuli during skeletal muscle differentiation. In myogenic cells, we demonstrated that the expression of CDK5 (cyclin-dependent kinase 5) is regulated by XBP1s, and we propose that XBP1 regulates the expression of MyoD family genes via the induction of CDK5. In conclusion, this study revealed that IRE1-XBP1 signaling plays critical roles in cell viability and the expression of differentiation-related genes in predifferentiated myoblasts and during the early differentiation phase.
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Affiliation(s)
- Yukako Tokutake
- Department of Bioscience and Food Production Science, Interdisciplinary Graduate School of Science and Technology, Shinshu University, Minamiminowa, Kamiina-gun, Nagano 399-4598, Japan;
| | - Keita Yamada
- Department of Biomedical Engineering, Interdisciplinary Graduate School of Science and Technology, Shinshu University, Minamiminowa, Kamiina-gun, Nagano 399-4598, Japan; (K.Y.); (S.H.); (W.A.)
| | - Satoko Hayashi
- Department of Biomedical Engineering, Interdisciplinary Graduate School of Science and Technology, Shinshu University, Minamiminowa, Kamiina-gun, Nagano 399-4598, Japan; (K.Y.); (S.H.); (W.A.)
| | - Wataru Arai
- Department of Biomedical Engineering, Interdisciplinary Graduate School of Science and Technology, Shinshu University, Minamiminowa, Kamiina-gun, Nagano 399-4598, Japan; (K.Y.); (S.H.); (W.A.)
| | - Takafumi Watanabe
- Laboratory of Anatomy, School of Veterinary Medicine, Rakuno Gakuen University, Ebetsu, Hokkaido 069-8501, Japan;
| | - Shinichi Yonekura
- Department of Bioscience and Food Production Science, Interdisciplinary Graduate School of Science and Technology, Shinshu University, Minamiminowa, Kamiina-gun, Nagano 399-4598, Japan;
- Department of Biomedical Engineering, Interdisciplinary Graduate School of Science and Technology, Shinshu University, Minamiminowa, Kamiina-gun, Nagano 399-4598, Japan; (K.Y.); (S.H.); (W.A.)
- Department of Biomolecular Innovation, Institute for Biomedical Sciences, Interdisciplinary Cluster for Cutting Edge Research, Shinshu University, Minamiminowa, Kamiina-gun, Nagano 399-4598, Japan
- Correspondence: ; Tel.: +81-265-77-1443
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15
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Vergé C, Bouchatal A, Chirat F, Guérardel Y, Maftah A, Petit JM. Involvement of ST6Gal I-mediated α2,6 sialylation in myoblast proliferation and differentiation. FEBS Open Bio 2019; 10:56-69. [PMID: 31622539 PMCID: PMC6943236 DOI: 10.1002/2211-5463.12745] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2019] [Revised: 09/24/2019] [Accepted: 10/16/2019] [Indexed: 12/20/2022] Open
Abstract
Myogenesis is a physiological process which involves the proliferation of myoblasts and their differentiation into multinucleated myotubes, which constitute the future muscle fibers. Commitment of myoblasts to differentiation is regulated by the balance between the myogenic factors Pax7 and MyoD. The formation of myotubes requires the presence of glycans, especially N‐glycans, on the cell surface. We examined here the involvement of α2,6 sialylation during murine myoblastic C2C12 cell differentiation by generating a st6gal1‐knockdown C2C12 cell line; these cells exhibit reduced proliferative potential and precocious differentiation due to the low expression of Pax7. The earlier fusion of st6gal1‐knockdown cells leads to a high fusion index and a drop in reserve cells (Pax7+/MyoD−). In st6gal1‐knockdown cells, the Notch pathway is inactivated; consequently, Pax7 expression is virtually abolished, leading to impairment of the proliferation rate. All these results indicate that the decrease in α2,6 sialylation of N‐glycans favors the differentiation of most cells and provokes a significant loss of reserve cells.
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Affiliation(s)
- Caroline Vergé
- PEIRENE, EA 7500, Glycosylation and Cell Differentiation, University of Limoges, France
| | - Amel Bouchatal
- PEIRENE, EA 7500, Glycosylation and Cell Differentiation, University of Limoges, France
| | - Frédéric Chirat
- UGSF, UMR 8576, CNRS, University of Lille, Villeneuve d'Ascq, France
| | - Yann Guérardel
- UGSF, UMR 8576, CNRS, University of Lille, Villeneuve d'Ascq, France
| | - Abderrahman Maftah
- PEIRENE, EA 7500, Glycosylation and Cell Differentiation, University of Limoges, France
| | - Jean-Michel Petit
- PEIRENE, EA 7500, Glycosylation and Cell Differentiation, University of Limoges, France
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Functions and Regulatory Mechanisms of lncRNAs in Skeletal Myogenesis, Muscle Disease and Meat Production. Cells 2019; 8:cells8091107. [PMID: 31546877 PMCID: PMC6769631 DOI: 10.3390/cells8091107] [Citation(s) in RCA: 54] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2019] [Revised: 09/04/2019] [Accepted: 09/17/2019] [Indexed: 12/20/2022] Open
Abstract
Myogenesis is a complex biological process, and understanding the regulatory network of skeletal myogenesis will contribute to the treatment of human muscle related diseases and improvement of agricultural animal meat production. Long noncoding RNAs (lncRNAs) serve as regulators in gene expression networks, and participate in various biological processes. Recent studies have identified functional lncRNAs involved in skeletal muscle development and disease. These lncRNAs regulate the proliferation, differentiation, and fusion of myoblasts through multiple mechanisms, such as chromatin modification, transcription regulation, and microRNA sponge activity. In this review, we presented the latest advances regarding the functions and regulatory activities of lncRNAs involved in muscle development, muscle disease, and meat production. Moreover, challenges and future perspectives related to the identification of functional lncRNAs were also discussed.
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Exogenous Expression of an Alternative Splicing Variant of Myostatin Prompts Leg Muscle Fiber Hyperplasia in Japanese Quail. Int J Mol Sci 2019; 20:ijms20184617. [PMID: 31540432 PMCID: PMC6770055 DOI: 10.3390/ijms20184617] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2019] [Revised: 09/04/2019] [Accepted: 09/17/2019] [Indexed: 12/03/2022] Open
Abstract
Myostatin (MSTN) negatively regulates muscle growth and development through inhibiting myoblast proliferation and differentiation. Five alternative splicing isoforms of MSTN (MSTN-A to MSTN-E) have been discovered in domestic avian species. MSTN-A has high expression in skeletal muscle and encodes the full-length peptide with anti-myogenic activity. Another isoform, MSTN-B, is also highly expressed in skeletal muscle and encodes a truncated peptide that has pro-myogenic capabilities in vitro, which include promoting the proliferation and differentiation of quail muscle precursor cells. The objective of this study was to investigate overexpression of MSTN-B in vivo by using two independent lines of transgenic Japanese quail with expression directed in the skeletal muscle. Unexpectedly, the chicken skeletal muscle alpha actin 1 (cACTA1) promoter resulted in restricted exogenous MSTN-B protein expression to certain skeletal muscles, such as the gastrocnemius and tibialis anterior, but not the pectoralis major muscle. Gastrocnemius weight as a percentage of body weight in transgenic quail was increased compared to non-transgenic quail at posthatch day 21 (D21) and posthatch D42. An increase in the size of the gastrocnemius in transgenic quail was attributed to an increase in fiber number but not fiber cross-sectional area (CSA). During embryonic development, paired box 7 (PAX7) expression was prolonged in the transgenic embryos, but other myogenic regulatory factors (MRFs) were unchanged after MSTN-B overexpression. Taken together, these data provide novel insights into the regulation of skeletal muscle development by alternative splicing mechanisms in avians.
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Hart CR, Ryan ZC, Pfaffenbach KT, Dasari S, Parvizi M, Lalia AZ, Lanza IR. Attenuated activation of the unfolded protein response following exercise in skeletal muscle of older adults. Aging (Albany NY) 2019; 11:7587-7604. [PMID: 31525732 PMCID: PMC6781982 DOI: 10.18632/aging.102273] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [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: 09/05/2019] [Indexed: 12/11/2022]
Abstract
Sarcopenia is linked with impaired adaptive responses to exercise in aging skeletal muscle. The unfolded protein response (UPR) is an important intramyocellular molecular response pathway that is activated by exercise. The influence of age on skeletal muscle adaptive UPR in response to exercise, and the relationship to other key exercise-responsive regulatory pathways is not well-understood. We evaluated age-related changes in transcriptional markers of UPR activation following a single bout of resistance exercise in 12 young (27 ± 5yrs) and 12 older (75 ± 5yrs) healthy men and women. At baseline, there were modest differences in expression of UPR-related genes in young and older adults. Following exercise, transcriptional markers of UPR pathway activation were attenuated in older adults compared to young based on specific salient UPR-related genes and gene set enrichment analysis. The coordination of post-exercise transcriptional patterns between the UPR pathway, p53/p21 axis of autophagy, and satellite cell differentiation were less evident in older compared to young adults. In conclusion, transcriptomic analysis revealed an age-related decline in the adaptive UPR transcriptional response following a single bout of exercise that could contribute to impaired exercise responsiveness with age.
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Affiliation(s)
- Corey R. Hart
- Division of Endocrinology and Metabolism, Mayo Clinic College of Medicine, Rochester, MN 55905, USA
| | - Zachary C. Ryan
- Division of Endocrinology and Metabolism, Mayo Clinic College of Medicine, Rochester, MN 55905, USA
| | - Kyle T. Pfaffenbach
- Department of Physical Activity and Health, Eastern Oregon University, La Grande, OR 97850, USA
| | - Surendra Dasari
- Division of Biostatistics and Informatics, Mayo Clinic College of Medicine, Rochester, MN 55905, USA
| | - Mojtaba Parvizi
- Division of Endocrinology and Metabolism, Mayo Clinic College of Medicine, Rochester, MN 55905, USA
| | - Antigoni Z. Lalia
- Division of Endocrinology and Metabolism, Mayo Clinic College of Medicine, Rochester, MN 55905, USA
| | - Ian R. Lanza
- Division of Endocrinology and Metabolism, Mayo Clinic College of Medicine, Rochester, MN 55905, USA
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Scully D, Sfyri P, Verpoorten S, Papadopoulos P, Muñoz‐Turrillas MC, Mitchell R, Aburima A, Patel K, Gutiérrez L, Naseem KM, Matsakas A. Platelet releasate promotes skeletal myogenesis by increasing muscle stem cell commitment to differentiation and accelerates muscle regeneration following acute injury. Acta Physiol (Oxf) 2019; 225:e13207. [PMID: 30339324 DOI: 10.1111/apha.13207] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2018] [Revised: 09/27/2018] [Accepted: 10/14/2018] [Indexed: 12/11/2022]
Abstract
AIM The use of platelets as biomaterials has gained intense research interest. However, the mechanisms regarding platelet-mediated skeletal myogenesis remain to be established. The aim of this study was to determine the role of platelet releasate in skeletal myogenesis and muscle stem cell fate in vitro and ex vivo respectively. METHODS We analysed the effect of platelet releasate on proliferation and differentiation of C2C12 myoblasts by means of cell proliferation assays, immunohistochemistry, gene expression and cell bioenergetics. We expanded in vitro findings on single muscle fibres by determining the effect of platelet releasate on murine skeletal muscle stem cells using protein expression profiles for key myogenic regulatory factors. RESULTS TRAP6 and collagen used for releasate preparation had a more pronounced effect on myoblast proliferation vs thrombin and sonicated platelets (P < 0.05). In addition, platelet concentration positively correlated with myoblast proliferation. Platelet releasate increased myoblast and muscle stem cell proliferation in a dose-dependent manner, which was mitigated by VEGFR and PDGFR inhibition. Inhibition of VEGFR and PDGFR ablated MyoD expression on proliferating muscle stem cells, compromising their commitment to differentiation in muscle fibres (P < 0.001). Platelet releasate was detrimental to myoblast fusion and affected differentiation of myoblasts in a temporal manner. Most importantly, we show that platelet releasate promotes skeletal myogenesis through the PDGF/VEGF-Cyclin D1-MyoD-Scrib-Myogenin axis and accelerates skeletal muscle regeneration after acute injury. CONCLUSION This study provides novel mechanistic insights on the role of platelet releasate in skeletal myogenesis and set the physiological basis for exploiting platelets as biomaterials in regenerative medicine.
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Affiliation(s)
- David Scully
- Molecular Physiology Laboratory, Centre for Atherothrombotic and Metabolic Disease, Hull York Medical School University of Hull Hull UK
| | - Peggy Sfyri
- Molecular Physiology Laboratory, Centre for Atherothrombotic and Metabolic Disease, Hull York Medical School University of Hull Hull UK
| | - Sandrine Verpoorten
- Molecular Physiology Laboratory, Centre for Atherothrombotic and Metabolic Disease, Hull York Medical School University of Hull Hull UK
| | - Petros Papadopoulos
- Department of Hematology, Instituto de Investigación Sanitaria San Carlos (IdISSC) Hospital Clínico San Carlos Madrid Spain
| | - María Carmen Muñoz‐Turrillas
- Centro Comunitario de Sangre y Tejidos de Asturias and Instituto de Investigación Sanitaria del Principado de Asturias (ISPA) Oviedo Spain
| | - Robert Mitchell
- School of Biological Sciences University of Reading Reading UK
| | - Ahmed Aburima
- Molecular Physiology Laboratory, Centre for Atherothrombotic and Metabolic Disease, Hull York Medical School University of Hull Hull UK
| | - Ketan Patel
- School of Biological Sciences University of Reading Reading UK
| | - Laura Gutiérrez
- Department of Medicine Universidad de Oviedo and Instituto de Investigación Sanitaria del Principado de Asturias (ISPA) Oviedo Spain
| | - Khalid M. Naseem
- Leeds Institute of Cardiovascular and Metabolic Medicine University of Leeds Leeds UK
| | - Antonios Matsakas
- Molecular Physiology Laboratory, Centre for Atherothrombotic and Metabolic Disease, Hull York Medical School University of Hull Hull UK
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de Lázaro I, Yilmazer A, Nam Y, Qubisi S, Razak FMA, Degens H, Cossu G, Kostarelos K. Non-viral, Tumor-free Induction of Transient Cell Reprogramming in Mouse Skeletal Muscle to Enhance Tissue Regeneration. Mol Ther 2018; 27:59-75. [PMID: 30470628 DOI: 10.1016/j.ymthe.2018.10.014] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2018] [Revised: 10/16/2018] [Accepted: 10/19/2018] [Indexed: 01/14/2023] Open
Abstract
Overexpression of Oct3/4, Klf4, Sox2, and c-Myc (OKSM) transcription factors can de-differentiate adult cells in vivo. While sustained OKSM expression triggers tumorigenesis through uncontrolled proliferation of toti- and pluripotent cells, transient reprogramming induces pluripotency-like features and proliferation only temporarily, without teratomas. We sought to transiently reprogram cells within mouse skeletal muscle with a localized injection of plasmid DNA encoding OKSM (pOKSM), and we hypothesized that the generation of proliferative intermediates would enhance tissue regeneration after injury. Intramuscular pOKSM administration rapidly upregulated pluripotency (Nanog, Ecat1, and Rex1) and early myogenesis genes (Pax3) in the healthy gastrocnemius of various strains. Mononucleated cells expressing such markers appeared in clusters among myofibers, proliferated only transiently, and did not lead to dysplasia or tumorigenesis for at least 120 days. Nanog was also upregulated in the gastrocnemius when pOKSM was administered 7 days after surgically sectioning its medial head. Enhanced tissue regeneration after reprogramming was manifested by the accelerated appearance of centronucleated myofibers and reduced fibrosis. These results suggest that transient in vivo reprogramming could develop into a novel strategy toward the acceleration of tissue regeneration after injury, based on the induction of transiently proliferative, pluripotent-like cells in situ. Further research to achieve clinically meaningful functional regeneration is warranted.
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Affiliation(s)
- Irene de Lázaro
- Nanomedicine Lab, Faculty of Biology, Medicine and Health, AV Hill Building, The University of Manchester, Manchester M13 9PT, UK; UCL School of Pharmacy, Faculty of Life Sciences, University College London (UCL), London WC1N 1AX, UK
| | - Acelya Yilmazer
- Nanomedicine Lab, Faculty of Biology, Medicine and Health, AV Hill Building, The University of Manchester, Manchester M13 9PT, UK
| | - Yein Nam
- Nanomedicine Lab, Faculty of Biology, Medicine and Health, AV Hill Building, The University of Manchester, Manchester M13 9PT, UK; UCL School of Pharmacy, Faculty of Life Sciences, University College London (UCL), London WC1N 1AX, UK
| | - Sara Qubisi
- Nanomedicine Lab, Faculty of Biology, Medicine and Health, AV Hill Building, The University of Manchester, Manchester M13 9PT, UK; UCL School of Pharmacy, Faculty of Life Sciences, University College London (UCL), London WC1N 1AX, UK
| | - Fazilah Maizatul Abdul Razak
- Nanomedicine Lab, Faculty of Biology, Medicine and Health, AV Hill Building, The University of Manchester, Manchester M13 9PT, UK; UCL School of Pharmacy, Faculty of Life Sciences, University College London (UCL), London WC1N 1AX, UK
| | - Hans Degens
- School of Healthcare Science, Manchester Metropolitan University, John Dalton Building, Chester Street, Manchester M1 5GD, UK
| | - Giulio Cossu
- Division of Cell Matrix Biology & Regenerative Medicine, Faculty of Biology, Medicine and Health, Michael Smith Building, The University of Manchester, Manchester M13 9PL, UK
| | - Kostas Kostarelos
- Nanomedicine Lab, Faculty of Biology, Medicine and Health, AV Hill Building, The University of Manchester, Manchester M13 9PT, UK; UCL School of Pharmacy, Faculty of Life Sciences, University College London (UCL), London WC1N 1AX, UK.
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21
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Radiation-induced muscle fibrosis rat model: establishment and valuation. Radiat Oncol 2018; 13:160. [PMID: 30157899 PMCID: PMC6114061 DOI: 10.1186/s13014-018-1104-0] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2018] [Accepted: 08/17/2018] [Indexed: 02/06/2023] Open
Abstract
Background Lack of animal model of radiation induced muscle fibrosis, this study aimed to establish such a model by using 90 Gy single dose irradiation to mimic clinical relevance and also to explore the potential post-irradiation regenerative mechanism. Methods SD rats were randomly divided into dose investigation groups and time gradient groups. Group1–6 were irradiated with a single dose of 65Gy, 70Gy, 75Gy, 80Gy, 85Gy and 90Gy respectively, and the degree of rectus femoris fibrosis in the irradiated area was detected at 4 weeks after irradiation. Group 7–9 were irradiated with a single dose of 90Gy, and the results were detected 1, 2, 4, and 8 weeks after irradiation. Then the general condition of rats was recorded. Masson staining was used to detect muscle fibrosis. The ultrastructure of muscles was observed by electron microscope, and the expression changes of satellite cell proliferation and differentiation related genes were detected by quantitative real-time-PCR. Results A single dose of 90Gy irradiation could cause muscle fibrosis in rats. As time goes on, the severity of muscle fibrosis and the expression of TGF- β1 increased. Significant swelling of mitochondria, myofilament disarrangement and dissolution, obvious endothelial cell swelling, increased vascular permeability, decrease of blood cell, deposition of fibrosis tissue around the vessel could be found compared with the control group. At around the 4th week, the expressions of Pax7, Myf5, MyoD, MyoG, Mrf4 increased. Conclusion Irradiation of 90Gy can successfully establish the rat model of radiation-induced muscle fibrosis. This model demonstrated that regenerative process was initiated by the irradiation only at an early stage, which can serve a suitable model for investigating regenerative therapy for post-radiation muscle fibrosis.
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22
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Yang Q, Li Y, Zhang X, Chen D. Zac1/GPR39 phosphorylating CaMK-II contributes to the distinct roles of Pax3 and Pax7 in myogenic progression. Biochim Biophys Acta Mol Basis Dis 2018; 1864:407-419. [DOI: 10.1016/j.bbadis.2017.10.026] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2017] [Revised: 09/15/2017] [Accepted: 10/22/2017] [Indexed: 12/12/2022]
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23
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Schubert FR, Singh AJ, Afoyalan O, Kioussi C, Dietrich S. To roll the eyes and snap a bite - function, development and evolution of craniofacial muscles. Semin Cell Dev Biol 2018; 91:31-44. [PMID: 29331210 DOI: 10.1016/j.semcdb.2017.12.013] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2017] [Revised: 12/15/2017] [Accepted: 12/18/2017] [Indexed: 02/06/2023]
Abstract
Craniofacial muscles, muscles that move the eyes, control facial expression and allow food uptake and speech, have long been regarded as a variation on the general body muscle scheme. However, evidence has accumulated that the function of head muscles, their developmental anatomy and the underlying regulatory cascades are distinct. This article reviews the key aspects of craniofacial muscle and muscle stem cell formation and discusses how this differs from the trunk programme of myogenesis; we show novel RNAseq data to support this notion. We also trace the origin of head muscle in the chordate ancestors of vertebrates and discuss links with smooth-type muscle in the primitive chordate pharynx. We look out as to how the special properties of head muscle precursor and stem cells, in particular their competence to contribute to the heart, could be exploited in regenerative medicine.
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Affiliation(s)
- Frank R Schubert
- Institute of Biomedical and Biomolecular Sciences, University of Portsmouth, Portsmouth, UK
| | - Arun J Singh
- Department of Pharmaceutical Sciences, College of Pharmacy, Oregon State University, Corvallis, OR, 97331, USA
| | - Oluwatomisin Afoyalan
- Institute of Biomedical and Biomolecular Sciences, University of Portsmouth, Portsmouth, UK
| | - Chrissa Kioussi
- Department of Pharmaceutical Sciences, College of Pharmacy, Oregon State University, Corvallis, OR, 97331, USA
| | - Susanne Dietrich
- Institute of Biomedical and Biomolecular Sciences, University of Portsmouth, Portsmouth, UK.
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24
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Bloise FF, Cordeiro A, Ortiga-Carvalho TM. Role of thyroid hormone in skeletal muscle physiology. J Endocrinol 2018; 236:R57-R68. [PMID: 29051191 DOI: 10.1530/joe-16-0611] [Citation(s) in RCA: 97] [Impact Index Per Article: 16.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/22/2017] [Accepted: 10/19/2017] [Indexed: 12/31/2022]
Abstract
Thyroid hormones (TH) are crucial for development, growth, differentiation, metabolism and thermogenesis. Skeletal muscle (SM) contractile function, myogenesis and bioenergetic metabolism are influenced by TH. These effects depend on the presence of the TH transporters MCT8 and MCT10 in the plasma membrane, the expression of TH receptors (THRA or THRB) and hormone availability, which is determined either by the activation of thyroxine (T4) into triiodothyronine (T3) by type 2 iodothyronine deiodinases (D2) or by the inactivation of T4 into reverse T3 by deiodinases type 3 (D3). SM relaxation and contraction rates depend on T3 regulation of myosin expression and energy supplied by substrate oxidation in the mitochondria. The balance between D2 and D3 expression determines TH intracellular levels and thus influences the proliferation and differentiation of satellite cells, indicating an important role of TH in muscle repair and myogenesis. During critical illness, changes in TH levels and in THR and deiodinase expression negatively affect SM function and repair. This review will discuss the influence of TH action on SM contraction, bioenergetics metabolism, myogenesis and repair in health and illness conditions.
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Affiliation(s)
- Flavia F Bloise
- Institute of Biophysics Carlos Chagas FilhoLaboratory of Translational Endocrinology, Rio de Janeiro, Brazil
| | - Aline Cordeiro
- Institute of Biophysics Carlos Chagas FilhoLaboratory of Translational Endocrinology, Rio de Janeiro, Brazil
| | - Tania Maria Ortiga-Carvalho
- Institute of Biophysics Carlos Chagas FilhoLaboratory of Translational Endocrinology, Rio de Janeiro, Brazil
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25
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Cretoiu D, Pavelescu L, Duica F, Radu M, Suciu N, Cretoiu SM. Myofibers. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2018; 1088:23-46. [PMID: 30390246 DOI: 10.1007/978-981-13-1435-3_2] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Muscle tissue is a highly specialized type of tissue, made up of cells that have as their fundamental properties excitability and contractility. The cellular elements that make up this type of tissue are called muscle fibers, or myofibers, because of the elongated shape they have. Contractility is due to the presence of myofibrils in the muscle fiber cytoplasm, as large cellular assemblies. Also, myofibers are responsible for the force that the muscle generates which represents a countless aspect of human life. Movements due to muscles are based on the ability of muscle fibers to use the chemical energy procured in metabolic processes, to shorten and then to return to the original dimensions. We describe in detail the levels of organization for the myofiber, and we correlate the structural aspects with the functional ones, beginning with neuromuscular transmission down to the biochemical reactions achieved in the sarcoplasmic reticulum by the release of Ca2+ and the cycling of crossbridges. Furthermore, we are reviewing the types of muscle contractions and the fiber-type classification.
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Affiliation(s)
- Dragos Cretoiu
- Alessandrescu-Rusescu National Institute of Mother and Child Health, Fetal Medicine Excellence Research Center Bucharest, Bucharest, Romania.,Division of Cell and Molecular Biology and Histology, Carol Davila University of Medicine and Pharmacy, Bucharest, Romania
| | - Luciana Pavelescu
- Division of Cell and Molecular Biology and Histology, Carol Davila University of Medicine and Pharmacy, Bucharest, Romania
| | - Florentina Duica
- Alessandrescu-Rusescu National Institute of Mother and Child Health, Fetal Medicine Excellence Research Center Bucharest, Bucharest, Romania
| | - Mihaela Radu
- Alessandrescu-Rusescu National Institute of Mother and Child Health, Fetal Medicine Excellence Research Center Bucharest, Bucharest, Romania
| | - Nicolae Suciu
- Alessandrescu-Rusescu National Institute of Mother and Child Health, Fetal Medicine Excellence Research Center Bucharest, Bucharest, Romania
| | - Sanda Maria Cretoiu
- Division of Cell and Molecular Biology and Histology, Carol Davila University of Medicine and Pharmacy, Bucharest, Romania.
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26
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Hagan M, Zhou M, Ashraf M, Kim IM, Su H, Weintraub NL, Tang Y. Long noncoding RNAs and their roles in skeletal muscle fate determination. ACTA ACUST UNITED AC 2017; 1. [PMID: 29451560 DOI: 10.21037/ncri.2017.12.01] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Myogenic fate determination is important in skeletal muscle development, growth and repair. A variety of factors regulate myogenic cell determination via transcriptional and non-transcriptional mechanisms. Amongst these factors, long noncoding RNAs (lncRNAs) have gained considerable attention for their important roles in regulating myogenic differentiation and function. Many classes of lncRNAs have been discovered; various lncRNAs have been implicated in the regulation of myogenic cell fate determination and are the subject of this brief review.
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Affiliation(s)
- Mackenzie Hagan
- Vascular Biology Center, Medical College of Georgia, Augusta University, Augusta, GA, USA
| | - Mi Zhou
- Department of cardiac surgery, Ruijin Hospital, Shanghai Jiao Tong University, Shanghai 200000, China
| | - Muhammad Ashraf
- Department of Emergency Medicine, College of Medicine, The Ohio State University, Columbus, OH, USA
| | - Il-Man Kim
- Vascular Biology Center, Medical College of Georgia, Augusta University, Augusta, GA, USA
| | - Huabo Su
- Vascular Biology Center, Medical College of Georgia, Augusta University, Augusta, GA, USA
| | - Neal L Weintraub
- Vascular Biology Center, Medical College of Georgia, Augusta University, Augusta, GA, USA
| | - Yaoliang Tang
- Vascular Biology Center, Medical College of Georgia, Augusta University, Augusta, GA, USA
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27
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Gatta L, Vitiello L, Gorini S, Chiandotto S, Costelli P, Giammarioli AM, Malorni W, Rosano G, Ferraro E. Modulating the metabolism by trimetazidine enhances myoblast differentiation and promotes myogenesis in cachectic tumor-bearing c26 mice. Oncotarget 2017; 8:113938-113956. [PMID: 29371959 PMCID: PMC5768376 DOI: 10.18632/oncotarget.23044] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2017] [Accepted: 11/28/2017] [Indexed: 12/28/2022] Open
Abstract
Trimetazidine (TMZ) is a metabolic reprogramming agent able to partially inhibit mitochondrial free fatty acid β-oxidation while enhancing glucose oxidation. Here we have found that the metabolic shift driven by TMZ enhances the myogenic potential of skeletal muscle progenitor cells leading to MyoD, Myogenin, Desmin and the slow isoforms of troponin C and I over-expression. Moreover, similarly to exercise, TMZ stimulates the phosphorylation of the AMP-activated protein kinase (AMPK) and up-regulates the peroxisome proliferator-activated receptor gamma coactivator 1-α (PGC1α), both of which are known to enhance the mitochondrial biogenesis necessary for myoblast differentiation. TMZ also induces autophagy which is required during myoblast differentiation and promotes myoblast alignment which allows cell fusion and myofiber formation. Finally, we found that intraperitoneally administered TMZ (5mg/kg) is able to stimulate myogenesis in vivo both in a mice model of cancer cachexia (C26 mice) and upon cardiotoxin damage. Collectively, our work demonstrates that TMZ enhances myoblast differentiation and promotes myogenesis, which might contribute recovering stem cell blunted regenerative capacity and counteracting muscle wasting, thanks to the formation of new myofibers; TMZ is already in use in humans as an anti-anginal drug and its repositioning might impact significantly on aging and regeneration-impaired disorders, including cancer cachexia, as well as have implications in regenerative medicine.
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Affiliation(s)
- Lucia Gatta
- Laboratory of Pathophysiology of Cachexia and Metabolism of Skeletal Muscle, IRCCS San Raffaele Pisana, Rome, Italy
| | - Laura Vitiello
- Laboratory of Pathophysiology of Cachexia and Metabolism of Skeletal Muscle, IRCCS San Raffaele Pisana, Rome, Italy
| | - Stefania Gorini
- Laboratory of Pathophysiology of Cachexia and Metabolism of Skeletal Muscle, IRCCS San Raffaele Pisana, Rome, Italy
| | - Sergio Chiandotto
- Department of Molecular and Clinical Medicine (DMCM), C/o Department of Surgery "Pietro Valdoni", Sapienza University of Rome, Rome, Italy
| | - Paola Costelli
- Department of Clinical and Biological Sciences, University of Turin, Turin, Italy.,Interuniversity Institute of Myology-IIM, Chieti, Italy
| | - Anna Maria Giammarioli
- Department of Therapeutic Research and Medicine Evaluation, Istituto Superiore di Sanita, Rome, Italy
| | - Walter Malorni
- Department of Therapeutic Research and Medicine Evaluation, Istituto Superiore di Sanita, Rome, Italy
| | - Giuseppe Rosano
- Cardiovascular and Cell Sciences Institute, St George's University of London, Cranmer Terrace, London, UK
| | - Elisabetta Ferraro
- Laboratory of Pathophysiology of Cachexia and Metabolism of Skeletal Muscle, IRCCS San Raffaele Pisana, Rome, Italy
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28
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Alharby E, Albalawi A, Nasir A, Alhijji S, Mahmood A, Ramzan K, Abdusamad F, Aljohani A, Abdelsalam O, Eldardear A, Basit S. A homozygous potentially pathogenic variant in thePAXBP1gene in a large family with global developmental delay and myopathic hypotonia. Clin Genet 2017; 92:579-586. [DOI: 10.1111/cge.13051] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2017] [Revised: 04/26/2017] [Accepted: 05/05/2017] [Indexed: 11/30/2022]
Affiliation(s)
- E. Alharby
- Center for Genetics and Inherited Diseases; Taibah University; Almadinah Almunawwarah Saudi Arabia
| | - A.M. Albalawi
- Center for Genetics and Inherited Diseases; Taibah University; Almadinah Almunawwarah Saudi Arabia
| | - A. Nasir
- Synthetic Protein Engineering Laboratory (SPEL); Ajou University; Suwon Korea
| | - S.A. Alhijji
- Paediatric Neurology Department; King Abdullah Medical City, Madinah Maternity and Children Hospital; Almadinah Almunawwarah Saudi Arabia
| | - A. Mahmood
- Stem Cells Unit, Department of Anatomy; King Khalid University Hospital, King Saud University; Riyadh Saudi Arabia
| | - K. Ramzan
- Department of Genetics, Research Centre; King Faisal Specialist Hospital and Research Centre; Riyadh Saudi Arabia
| | - F. Abdusamad
- Center for Genetics and Inherited Diseases; Taibah University; Almadinah Almunawwarah Saudi Arabia
| | - A. Aljohani
- College of Applied Medical Sciences; Taibah University; Almadinah Almunawwarah Saudi Arabia
| | | | - A. Eldardear
- College of Medicine; Taibah University; Almadinah Almunawwarah Saudi Arabia
| | - S. Basit
- Center for Genetics and Inherited Diseases; Taibah University; Almadinah Almunawwarah Saudi Arabia
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29
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Zhu XJ, Yuan X, Wang M, Fang Y, Liu Y, Zhang X, Yang X, Li Y, Li J, Li F, Dai ZM, Qiu M, Zhang Z, Zhang Z. A Wnt/Notch/Pax7 signaling network supports tissue integrity in tongue development. J Biol Chem 2017; 292:9409-9419. [PMID: 28438836 DOI: 10.1074/jbc.m117.789438] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2017] [Revised: 04/21/2017] [Indexed: 01/07/2023] Open
Abstract
The tongue is one of the major structures involved in human food intake and speech. Tongue malformations such as aglossia, microglossia, and ankyloglossia are congenital birth defects, greatly affecting individuals' quality of life. However, the molecular basis of the tissue-tissue interactions that ensure tissue morphogenesis to form a functional tongue remains largely unknown. Here we show that ShhCre -mediated epithelial deletion of Wntless (Wls), the key regulator for intracellular Wnt trafficking, leads to lingual hypoplasia in mice. Disruption of epithelial Wnt production by Wls deletion in epithelial cells led to a failure in lingual epidermal stratification and loss of the lamina propria and the underlying superior longitudinal muscle in developing mouse tongues. These defective phenotypes resulted from a reduction in epithelial basal cells positive for the basal epidermal marker protein p63 and from impaired proliferation and differentiation in connective tissue and paired box 3 (Pax3)- and Pax7-positive muscle progenitor cells. We also found that epithelial Wnt production is required for activation of the Notch signaling pathway, which promotes proliferation of myogenic progenitor cells. Notch signaling in turn negatively regulated Wnt signaling during tongue morphogenesis. We further show that Pax7 is a direct Notch target gene in the embryonic tongue. In summary, our findings demonstrate a key role for the lingual epithelial signals in supporting the integrity of the lamina propria and muscular tissue during tongue development and that a Wnt/Notch/Pax7 genetic hierarchy is involved in this development.
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Affiliation(s)
- Xiao-Jing Zhu
- From the Institute of Life Sciences, College of Life and Environmental Science, Key Laboratory of Mammalian Organogenesis and Regeneration, Hangzhou Normal University, Zhejiang 310036, China and
| | - Xueyan Yuan
- From the Institute of Life Sciences, College of Life and Environmental Science, Key Laboratory of Mammalian Organogenesis and Regeneration, Hangzhou Normal University, Zhejiang 310036, China and
| | - Min Wang
- From the Institute of Life Sciences, College of Life and Environmental Science, Key Laboratory of Mammalian Organogenesis and Regeneration, Hangzhou Normal University, Zhejiang 310036, China and
| | - Yukun Fang
- From the Institute of Life Sciences, College of Life and Environmental Science, Key Laboratory of Mammalian Organogenesis and Regeneration, Hangzhou Normal University, Zhejiang 310036, China and
| | - Yudong Liu
- From the Institute of Life Sciences, College of Life and Environmental Science, Key Laboratory of Mammalian Organogenesis and Regeneration, Hangzhou Normal University, Zhejiang 310036, China and
| | - Xiaoyun Zhang
- From the Institute of Life Sciences, College of Life and Environmental Science, Key Laboratory of Mammalian Organogenesis and Regeneration, Hangzhou Normal University, Zhejiang 310036, China and
| | - Xueqin Yang
- From the Institute of Life Sciences, College of Life and Environmental Science, Key Laboratory of Mammalian Organogenesis and Regeneration, Hangzhou Normal University, Zhejiang 310036, China and
| | - Yan Li
- From the Institute of Life Sciences, College of Life and Environmental Science, Key Laboratory of Mammalian Organogenesis and Regeneration, Hangzhou Normal University, Zhejiang 310036, China and
| | - Jianying Li
- From the Institute of Life Sciences, College of Life and Environmental Science, Key Laboratory of Mammalian Organogenesis and Regeneration, Hangzhou Normal University, Zhejiang 310036, China and
| | - Feixue Li
- From the Institute of Life Sciences, College of Life and Environmental Science, Key Laboratory of Mammalian Organogenesis and Regeneration, Hangzhou Normal University, Zhejiang 310036, China and
| | - Zhong-Min Dai
- From the Institute of Life Sciences, College of Life and Environmental Science, Key Laboratory of Mammalian Organogenesis and Regeneration, Hangzhou Normal University, Zhejiang 310036, China and
| | - Mengsheng Qiu
- From the Institute of Life Sciences, College of Life and Environmental Science, Key Laboratory of Mammalian Organogenesis and Regeneration, Hangzhou Normal University, Zhejiang 310036, China and
| | - Ze Zhang
- the Department of Ophthalmology, Tulane Medical Center, Tulane University, New Orleans, Louisiana 70115
| | - Zunyi Zhang
- From the Institute of Life Sciences, College of Life and Environmental Science, Key Laboratory of Mammalian Organogenesis and Regeneration, Hangzhou Normal University, Zhejiang 310036, China and
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30
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Moyle LA, Blanc E, Jaka O, Prueller J, Banerji CR, Tedesco FS, Harridge SD, Knight RD, Zammit PS. Ret function in muscle stem cells points to tyrosine kinase inhibitor therapy for facioscapulohumeral muscular dystrophy. eLife 2016; 5. [PMID: 27841748 PMCID: PMC5108591 DOI: 10.7554/elife.11405] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2015] [Accepted: 09/01/2016] [Indexed: 12/16/2022] Open
Abstract
Facioscapulohumeral muscular dystrophy (FSHD) involves sporadic expression of DUX4, which inhibits myogenesis and is pro-apoptotic. To identify target genes, we over-expressed DUX4 in myoblasts and found that the receptor tyrosine kinase Ret was significantly up-regulated, suggesting a role in FSHD. RET is dynamically expressed during myogenic progression in mouse and human myoblasts. Constitutive expression of either RET9 or RET51 increased myoblast proliferation, whereas siRNA-mediated knockdown of Ret induced myogenic differentiation. Suppressing RET activity using Sunitinib, a clinically-approved tyrosine kinase inhibitor, rescued differentiation in both DUX4-expressing murine myoblasts and in FSHD patient-derived myoblasts. Importantly, Sunitinib also increased engraftment and differentiation of FSHD myoblasts in regenerating mouse muscle. Thus, DUX4-mediated activation of Ret prevents myogenic differentiation and could contribute to FSHD pathology by preventing satellite cell-mediated repair. Rescue of DUX4-induced pathology by Sunitinib highlights the therapeutic potential of tyrosine kinase inhibitors for treatment of FSHD. DOI:http://dx.doi.org/10.7554/eLife.11405.001
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Affiliation(s)
- Louise A Moyle
- Randall Division of Cell and Molecular Biophysics, King's College London, London, United Kingdom.,Department of Cell and Developmental Biology, University College London, London, United Kingdom
| | - Eric Blanc
- Randall Division of Cell and Molecular Biophysics, King's College London, London, United Kingdom.,Core Unit Bioinformatics, Berlin Institute of Health, Berlin, Germany.,Institute of Pathology, Charite Universitatsmedizin Berlin, Berlin, Germany
| | - Oihane Jaka
- Centre of Human and Aerospace Physiological Sciences, King's College London, London, United Kingdom
| | - Johanna Prueller
- Randall Division of Cell and Molecular Biophysics, King's College London, London, United Kingdom
| | - Christopher Rs Banerji
- Randall Division of Cell and Molecular Biophysics, King's College London, London, United Kingdom
| | | | - Stephen Dr Harridge
- Centre of Human and Aerospace Physiological Sciences, King's College London, London, United Kingdom
| | - Robert D Knight
- Craniofacial Development and Stem Cell Biology, King's College London, London, United Kingdom
| | - Peter S Zammit
- Randall Division of Cell and Molecular Biophysics, King's College London, London, United Kingdom
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31
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Bazgir B, Fathi R, Rezazadeh Valojerdi M, Mozdziak P, Asgari A. Satellite Cells Contribution to Exercise Mediated Muscle Hypertrophy and Repair. CELL JOURNAL 2016; 18:473-484. [PMID: 28042532 PMCID: PMC5086326 DOI: 10.22074/cellj.2016.4714] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/05/2016] [Accepted: 05/26/2016] [Indexed: 12/20/2022]
Abstract
Satellite cells (SCs) are the most abundant skeletal muscle stem cells. They are widely recognized for their contributions to maintenance of muscle mass, regeneration and hypertrophy during the human life span. These cells are good candidates for cell therapy due to their self-renewal capabilities and presence in an undifferentiated form. Presently, a significant gap exists between our knowledge of SCs behavior and their application as a means for human skeletal muscle tissue repair and regeneration. Both physiological and pathological stimuli potentially affect SCs activation, proliferation, and terminal differentiation the former category being the focus of this article. Activation of SCs occurs following exercise, post-training micro-injuries, and electrical stimulation. Exercise, as a potent and natural stimulus, is at the center of numerous studies on SC activation and relevant fields. According to research, different exercise modalities end with various effects. This review article attempts to picture the state of the art of the SCs life span and their engagement in muscle regeneration and hypertrophy in exercise.
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Affiliation(s)
- Behzad Bazgir
- Exercise Physiology Research Center, Baqiyatallah University of Medical Sciences, Tehran, Iran
- Department of Embryology, Reproductive Biomedicine Research Center, Royan Institute for Reproductive
Biomedicine, ACECR, Tehran, Iran
| | - Rouhollah Fathi
- Department of Embryology, Reproductive Biomedicine Research Center, Royan Institute for Reproductive
Biomedicine, ACECR, Tehran, Iran
| | - Mojtaba Rezazadeh Valojerdi
- Department of Embryology, Reproductive Biomedicine Research Center, Royan Institute for Reproductive
Biomedicine, ACECR, Tehran, Iran
- Department of Anatomy, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran
| | - Paul Mozdziak
- Physiology Graduate Program, North Carolina State University, Raleigh, NC, USA
| | - Alireza Asgari
- Exercise Physiology Research Center, Baqiyatallah University of Medical Sciences, Tehran, Iran
- Aerospace and Subaquatic Medicine Faculty, Aerospace Medicine Research Center, AJA Medical Sciences
University, Tehran, Iran
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Czerwinska AM, Nowacka J, Aszer M, Gawrzak S, Archacka K, Fogtman A, Iwanicka-Nowicka R, Jańczyk-Ilach K, Koblowska M, Ciemerych MA, Grabowska I. Cell cycle regulation of embryonic stem cells and mouse embryonic fibroblasts lacking functional Pax7. Cell Cycle 2016; 15:2931-2942. [PMID: 27610933 PMCID: PMC5105925 DOI: 10.1080/15384101.2016.1231260] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
The transcription factor Pax7 plays a key role during embryonic myogenesis and in adult organisms in that it sustains the proper function of satellite cells, which serve as adult skeletal muscle stem cells. Recently we have shown that lack of Pax7 does not prevent the myogenic differentiation of pluripotent stem cells. In the current work we show that the absence of functional Pax7 in differentiating embryonic stem cells modulates cell cycle facilitating their proliferation. Surprisingly, deregulation of Pax7 function also positively impacts at the proliferation of mouse embryonic fibroblasts. Such phenotypes seem to be executed by modulating the expression of positive cell cycle regulators, such as cyclin E.
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Affiliation(s)
- Areta M Czerwinska
- a Department of Cytology , Institute of Zoology, Faculty of Biology, University of Warsaw , Warsaw , Poland
| | - Joanna Nowacka
- a Department of Cytology , Institute of Zoology, Faculty of Biology, University of Warsaw , Warsaw , Poland
| | - Magdalena Aszer
- a Department of Cytology , Institute of Zoology, Faculty of Biology, University of Warsaw , Warsaw , Poland
| | - Sylwia Gawrzak
- a Department of Cytology , Institute of Zoology, Faculty of Biology, University of Warsaw , Warsaw , Poland
| | - Karolina Archacka
- a Department of Cytology , Institute of Zoology, Faculty of Biology, University of Warsaw , Warsaw , Poland
| | - Anna Fogtman
- b Laboratory of Microarray Analysis, Institute of Biochemistry and Biophysics, Polish Academy of Sciences , Warsaw , Poland
| | - Roksana Iwanicka-Nowicka
- b Laboratory of Microarray Analysis, Institute of Biochemistry and Biophysics, Polish Academy of Sciences , Warsaw , Poland.,c Department of Systems Biology , Faculty of Biology, University of Warsaw , Warsaw , Poland
| | - Katarzyna Jańczyk-Ilach
- a Department of Cytology , Institute of Zoology, Faculty of Biology, University of Warsaw , Warsaw , Poland
| | - Marta Koblowska
- b Laboratory of Microarray Analysis, Institute of Biochemistry and Biophysics, Polish Academy of Sciences , Warsaw , Poland.,c Department of Systems Biology , Faculty of Biology, University of Warsaw , Warsaw , Poland
| | - Maria A Ciemerych
- a Department of Cytology , Institute of Zoology, Faculty of Biology, University of Warsaw , Warsaw , Poland
| | - Iwona Grabowska
- a Department of Cytology , Institute of Zoology, Faculty of Biology, University of Warsaw , Warsaw , Poland
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Yang Q, Yu J, Yu B, Huang Z, Zhang K, Wu D, He J, Mao X, Zheng P, Chen D. PAX3 + skeletal muscle satellite cells retain long-term self-renewal and proliferation. Muscle Nerve 2016; 54:943-951. [PMID: 27014961 DOI: 10.1002/mus.25117] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2015] [Revised: 03/18/2016] [Accepted: 03/21/2016] [Indexed: 11/06/2022]
Abstract
INTRODUCTION Different populations of satellite cells (SCs) have been identified, but their functional difference remains unclear. METHODS We used cell-surface markers and paired box transcription factor 3 (Pax3)/paired box transcription factor 7 (Pax7) expression to separate SC populations. In addition, self-renewal, proliferation, and differentiation abilities of each population were analyzed. RESULTS Pax3+ /Pax7- SCs exhibited higher proliferation ability characterized by forming clusters of myogenic colonies with more self-renewing cells after several passages, while Pax3- /Pax7+ SCs had faster differentiation. The myotubes derived from Pax3+ /Pax7- SCs tended to express slow-myosin heavy chain and exhibited rhythmic contraction, while myotubes originating from Pax3- /Pax7+ SCs primarily formed fast-myosin heavy chains characterized by transitory contraction. CONCLUSIONS Pax3+ /Pax7- SCs exhibited the ability of long-term self-renewal and proliferation, whereas Pax3- /Pax7+ SCs demonstrated faster differentiation. Muscle Nerve 54: 943-951, 2016.
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Affiliation(s)
- Qiumei Yang
- Animal Nutrition Institute, Sichuan Agricultural University, No. 46, Xinkang Road, Yaan, Sichuan, 625014, People's Republic of China
| | - Jie Yu
- Animal Nutrition Institute, Sichuan Agricultural University, No. 46, Xinkang Road, Yaan, Sichuan, 625014, People's Republic of China
| | - Bing Yu
- Animal Nutrition Institute, Sichuan Agricultural University, No. 46, Xinkang Road, Yaan, Sichuan, 625014, People's Republic of China
| | - Zhiqing Huang
- Animal Nutrition Institute, Sichuan Agricultural University, No. 46, Xinkang Road, Yaan, Sichuan, 625014, People's Republic of China
| | - Keying Zhang
- Animal Nutrition Institute, Sichuan Agricultural University, No. 46, Xinkang Road, Yaan, Sichuan, 625014, People's Republic of China
| | - De Wu
- Animal Nutrition Institute, Sichuan Agricultural University, No. 46, Xinkang Road, Yaan, Sichuan, 625014, People's Republic of China
| | - Jun He
- Animal Nutrition Institute, Sichuan Agricultural University, No. 46, Xinkang Road, Yaan, Sichuan, 625014, People's Republic of China
| | - Xiangbing Mao
- Animal Nutrition Institute, Sichuan Agricultural University, No. 46, Xinkang Road, Yaan, Sichuan, 625014, People's Republic of China
| | - Ping Zheng
- Animal Nutrition Institute, Sichuan Agricultural University, No. 46, Xinkang Road, Yaan, Sichuan, 625014, People's Republic of China
| | - Daiwen Chen
- Animal Nutrition Institute, Sichuan Agricultural University, No. 46, Xinkang Road, Yaan, Sichuan, 625014, People's Republic of China.
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Berti F, Nogueira JM, Wöhrle S, Sobreira DR, Hawrot K, Dietrich S. Time course and side-by-side analysis of mesodermal, pre-myogenic, myogenic and differentiated cell markers in the chicken model for skeletal muscle formation. J Anat 2016; 227:361-82. [PMID: 26278933 PMCID: PMC4560570 DOI: 10.1111/joa.12353] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/12/2015] [Indexed: 12/11/2022] Open
Abstract
The chicken is a well-established model for amniote (including human) skeletal muscle formation because the developmental anatomy of chicken skeletal muscle matches that of mammals. The accessibility of the chicken in the egg as well as the sequencing of its genome and novel molecular techniques have raised the profile of this model. Over the years, a number of regulatory and marker genes have been identified that are suited to monitor the progress of skeletal myogenesis both in wildtype and in experimental embryos. However, in the various studies, differing markers at different stages of development have been used. Moreover, contradictory results on the hierarchy of regulatory factors are now emerging, and clearly, factors need to be able to cooperate. Thus, a reference paper describing in detail and side-by-side the time course of marker gene expression during avian myogenesis is needed. We comparatively analysed onset and expression patterns of the key markers for the chicken immature paraxial mesoderm, for muscle-competent cells, for cells committed to myogenesis and for cells entering terminal differentiation. We performed this analysis from stages when the first paraxial mesoderm is being laid down to the stage when mesoderm formation comes to a conclusion. Our data show that, although the sequence of marker gene expression is the same at the various stages of development, the timing of the expression onset is quite different. Moreover, marker gene expression in myogenic cells being deployed from the dorsomedial and ventrolateral lips of the dermomyotome is different from those being deployed from the rostrocaudal lips, suggesting different molecular programs. Furthermore, expression of Myosin Heavy Chain genes is overlapping but different along the length of a myotube. Finally, Mef2c is the most likely partner of Mrf proteins, and, in contrast to the mouse and more alike frog and zebrafish fish, chicken Mrf4 is co-expressed with MyoG as cells enter terminal differentiation.
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Affiliation(s)
- Federica Berti
- Institute for Biomedical and Biomolecular Science (IBBS), School of Pharmacy and Biomedical Sciences, University of Portsmouth, Portsmouth, UK
| | - Júlia Meireles Nogueira
- Institute for Biomedical and Biomolecular Science (IBBS), School of Pharmacy and Biomedical Sciences, University of Portsmouth, Portsmouth, UK.,Instituto de Ciências Biológicas, Departamento de Morfologia, Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, Minas Gerais, Brazil
| | - Svenja Wöhrle
- Institute for Biomedical and Biomolecular Science (IBBS), School of Pharmacy and Biomedical Sciences, University of Portsmouth, Portsmouth, UK
| | - Débora Rodrigues Sobreira
- Institute for Biomedical and Biomolecular Science (IBBS), School of Pharmacy and Biomedical Sciences, University of Portsmouth, Portsmouth, UK.,Department of Human Genetics, University of Chicago, Chicago, IL, USA
| | - Katarzyna Hawrot
- Institute for Biomedical and Biomolecular Science (IBBS), School of Pharmacy and Biomedical Sciences, University of Portsmouth, Portsmouth, UK
| | - Susanne Dietrich
- Institute for Biomedical and Biomolecular Science (IBBS), School of Pharmacy and Biomedical Sciences, University of Portsmouth, Portsmouth, UK
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35
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Jin W, Peng J, Jiang S. The epigenetic regulation of embryonic myogenesis and adult muscle regeneration by histone methylation modification. Biochem Biophys Rep 2016; 6:209-219. [PMID: 28955879 PMCID: PMC5600456 DOI: 10.1016/j.bbrep.2016.04.009] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2015] [Revised: 04/14/2016] [Accepted: 04/18/2016] [Indexed: 12/11/2022] Open
Abstract
Skeletal muscle formation in vertebrates is derived from the paraxial mesoderm, which develops into myogenic precursor cells and finally differentiates into mature myofibers. This myogenic program involves temporal-spatial molecular events performed by transcription regulators (such as members of the Pax, MRFs and Six families) and signaling pathways (such as Wnts, BMP and Shh signaling). Epigenetic regulation, including histone post-translational modifications is crucial for controlling gene expression through recruitment of various chromatin-modifying enzymes that alter chromatin dynamics during myogenesis. The chromatin modifying enzymes are also recruited at regions of muscle gene regulation, coordinating transcription regulators to influence gene expression. In particular, the reversible methylation status of histone N-terminal tails provides the important regulatory mechanisms in either activation or repression of muscle genes. In this report, we review the recent literatures to deduce mechanisms underlying the epigenetic regulation of gene expression with a focus on histone methylation modification during embryo myogenesis and adult muscle regeneration. Recent results from different histone methylation/demethylation modifications have increased our understanding about the highly intricate layers of epigenetic regulations involved in myogenesis and cross-talk of histone enzymes with the muscle-specific transcriptional machinery. Myogenesis is influenced by regulation of transcription factors, signal pathways and post-transcriptional modifications. Histone methylation modifications as “on/off” switches regulated myogenic lineage commitment and differentiation. The myogenic regulatory factors and histone methylation modifications established dynamic regulatory mechanism.
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Key Words
- BMP4, bone morphogenic protein 4
- ChIP, chromatin immunoprecipitation
- Epigenetic
- H3K27, methylation of histone H3 lysine 27
- H3K4, methylation of histone H3 lysine 4
- H3K9, methylation of histone H3 lysine 9
- Histone methylation/demethylation modification
- KDMs, lysine demethyltransferases
- LSD1, lysine specific demethyltransferase 1
- MEF2, myocyte enhancer factor 2
- MRFs, myogenic regulatory factors
- Muscle differentiation
- Muscle progenitor cells
- Muscle regeneration
- Myogenesis
- PRC2, polycomb repressive complex 2
- SCs, satellite cells
- Shh, sonic hedgehog
- TSS, transcription start sites
- UTX, ubiquitously transcribed tetratricopeptide repeat, X chromosome
- bHLH, basic helix-loop-helix
- p38 MAPK, p38 mitogen-activated protein kinase
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Affiliation(s)
- Wei Jin
- Key Laboratory of Pig Genetics and Breeding of Ministry of Agriculture & Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction of Ministry of Education, Huazhong Agricultural University, Wuhan 430070, PR China
| | - Jian Peng
- Department of Animal Nutrition and Feed Science, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan 430070, Hubei, PR China
| | - Siwen Jiang
- Key Laboratory of Pig Genetics and Breeding of Ministry of Agriculture & Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction of Ministry of Education, Huazhong Agricultural University, Wuhan 430070, PR China.,Key Projects in the Cooperative Innovation Center for Sustainable Pig Production of Wuhan, PR China
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36
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Shelar SB, Narasimhan M, Shanmugam G, Litovsky SH, Gounder SS, Karan G, Arulvasu C, Kensler TW, Hoidal JR, Darley-Usmar VM, Rajasekaran NS. Disruption of nuclear factor (erythroid-derived-2)-like 2 antioxidant signaling: a mechanism for impaired activation of stem cells and delayed regeneration of skeletal muscle. FASEB J 2016; 30:1865-79. [PMID: 26839378 DOI: 10.1096/fj.201500153] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2015] [Accepted: 01/14/2016] [Indexed: 01/07/2023]
Abstract
Recently we have reported that age-dependent decline in antioxidant levels accelerated apoptosis and skeletal muscle degeneration. Here, we demonstrate genetic ablation of the master cytoprotective transcription factor, nuclear factor (erythroid-derived-2)-like 2 (Nrf2), aggravates cardiotoxin (CTX)-induced tibialis anterior (TA) muscle damage. Disruption of Nrf2 signaling sustained the CTX-induced burden of reactive oxygen species together with compromised expression of antioxidant genes and proteins. Transcript/protein expression of phenotypic markers of muscle differentiation, namely paired box 7 (satellite cell) and early myogenic differentiation and terminal differentiation (myogenin and myosin heavy chain 2) were increased on d 2 and 4 postinjury but later returned to baseline levels on d 8 and 15 in wild-type (WT) mice. In contrast, these responses were persistently augmented in Nrf2-null mice suggesting that regulation of the regeneration-related signaling mechanisms require Nrf2 for normal functioning. Furthermore, Nrf2-null mice displayed slower regeneration marked by dysregulation of embryonic myosin heavy chain temporal expression. Histologic observations illustrated that Nrf2-null mice displayed smaller, immature TA muscle fibers compared with WT counterparts on d 15 after CTX injury. Improvement in TA muscle morphology and gain in muscle mass evident in the WT mice was not noticeable in the Nrf2-null animals. Taken together these data show that the satellite cell activation, proliferation, and differentiation requires a functional Nrf2 system for effective healing following injury.-Shelar, S. B., Narasimhan, M., Shanmugam, G., Litovsky, S. H., Gounder, S. S., Karan, G., Arulvasu, C., Kensler, T. W., Hoidal, J. R., Darley-Usmar, V. M., Rajasekaran, N. S. Disruption of nuclear factor (erythroid-derived-2)-like 2 antioxidant signaling: a mechanism for impaired activation of stem cells and delayed regeneration of skeletal muscle.
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Affiliation(s)
- Sandeep Balu Shelar
- Cardiac Aging and Redox Signaling Laboratory, Division of Molecular and Cellular Pathology, Department of Pathology, University of Alabama at Birmingham, Birmingham, Alabama, USA
| | - Madhusudhanan Narasimhan
- Department of Pharmacology and Neuroscience, Texas Tech University Health Sciences Center, Lubbock, Texas, USA
| | - Gobinath Shanmugam
- Cardiac Aging and Redox Signaling Laboratory, Division of Molecular and Cellular Pathology, Department of Pathology, University of Alabama at Birmingham, Birmingham, Alabama, USA
| | - Silvio Hector Litovsky
- Division of Anatomic Pathology, Department of Pathology, University of Alabama at Birmingham, Birmingham, Alabama, USA
| | - Sellamuthu S Gounder
- Division of Cardiovascular Medicine/Pulmonary Medicine, Department of Medicine, University of Utah School of Medicine, Salt Lake City, Utah, USA
| | | | | | - Thomas W Kensler
- Department of Pharmacology & Chemical Biology, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | - John R Hoidal
- Division of Cardiovascular Medicine/Pulmonary Medicine, Department of Medicine, University of Utah School of Medicine, Salt Lake City, Utah, USA
| | - Victor M Darley-Usmar
- Center for Free Radical Biology, University of Alabama at Birmingham, Birmingham, Alabama, USA
| | - Namakkal S Rajasekaran
- Cardiac Aging and Redox Signaling Laboratory, Division of Molecular and Cellular Pathology, Department of Pathology, University of Alabama at Birmingham, Birmingham, Alabama, USA; Division of Cardiovascular Medicine/Pulmonary Medicine, Department of Medicine, University of Utah School of Medicine, Salt Lake City, Utah, USA; Center for Free Radical Biology, University of Alabama at Birmingham, Birmingham, Alabama, USA;
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37
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Chao Z, Zheng XL, Sun RP, Liu HL, Huang LL, Cao ZX, Deng CY, Wang F. Characterization of the Methylation Status of Pax7 and Myogenic Regulator Factors in Cell Myogenic Differentiation. ASIAN-AUSTRALASIAN JOURNAL OF ANIMAL SCIENCES 2015; 29:1037-43. [PMID: 26954143 PMCID: PMC4932581 DOI: 10.5713/ajas.15.0459] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/25/2015] [Revised: 10/01/2015] [Accepted: 11/13/2015] [Indexed: 11/27/2022]
Abstract
Epigenetic processes in the development of skeletal muscle have been appreciated for over a decade. DNA methylation is a major epigenetic modification important for regulating gene expression and suppressing spurious transcription. Up to now, the importance of epigenetic marks in the regulation of Pax7 and myogenic regulatory factors (MRFs) expression is far less explored. In the present study, semi-quantitative the real-time polymerase chain reaction (RT-PCR) analyses showed MyoD and Myf5 were expressed in activated and quiescent C2C12 cells. MyoG was expressed in a later stage of myogenesis. Pax7 was weakly expressed in differentiated C2C12 cells. To further understand the regulation of expression of these genes, the DNA methylation status of Pax7, MyoD, and Myf5 was determined by bisulfite sequencing PCR. During the C2C12 myoblasts fusion process, the changes of promoter and exon 1 methylation of Pax7, MyoD, and Myf5 genes were observed. In addition, an inverse relationship of low methylation and high expression was found. These results suggest that DNA methylation may be an important mechanism regulating Pax7 and MRFs transcription in cell myogenic differentiation.
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Affiliation(s)
- Zhe Chao
- Institute of Animal Sciences and Veterinary, Hainan Academy of Agricultural Sciences, Haikou 571100, China
| | - Xin-Li Zheng
- Institute of Animal Sciences and Veterinary, Hainan Academy of Agricultural Sciences, Haikou 571100, China
| | - Rui-Ping Sun
- Institute of Animal Sciences and Veterinary, Hainan Academy of Agricultural Sciences, Haikou 571100, China
| | - Hai-Long Liu
- Institute of Animal Sciences and Veterinary, Hainan Academy of Agricultural Sciences, Haikou 571100, China
| | - Li-Li Huang
- Institute of Animal Sciences and Veterinary, Hainan Academy of Agricultural Sciences, Haikou 571100, China
| | - Zong-Xi Cao
- Institute of Animal Sciences and Veterinary, Hainan Academy of Agricultural Sciences, Haikou 571100, China
| | - Chang-Yan Deng
- College of Animal Science, Huazhong Agricultural University, Wuhan 430070, China
| | - Feng Wang
- Institute of Animal Sciences and Veterinary, Hainan Academy of Agricultural Sciences, Haikou 571100, China
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38
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Buckingham M, Relaix F. PAX3 and PAX7 as upstream regulators of myogenesis. Semin Cell Dev Biol 2015; 44:115-25. [PMID: 26424495 DOI: 10.1016/j.semcdb.2015.09.017] [Citation(s) in RCA: 149] [Impact Index Per Article: 16.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2015] [Accepted: 09/23/2015] [Indexed: 10/23/2022]
Abstract
Like other subclasses within the PAX transcription factor family, PAX3 and PAX7 play important roles in the emergence of a number of different tissues during development. PAX3 regulates neural crest and, together with its orthologue PAX7, is also expressed in parts of the central nervous system. In this chapter we will focus on their role in skeletal muscle. Both factors are key regulators of myogenesis where Pax3 plays a major role during early skeletal muscle formation in the embryo while Pax7 predominates during post-natal growth and muscle regeneration in the adult. We review the expression and functions of these factors in the myogenic context. We also discuss mechanistic aspects of PAX3/7 function and modulation of their activity by interaction with other proteins, as well as the post-transcriptional and transcriptional regulation of their expression.
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Affiliation(s)
- Margaret Buckingham
- Department of Developmental and Stem Cell Biology, CNRS URA 2578, Institut Pasteur, 28 rue du Dr Roux, 75015 Paris, France.
| | - Frédéric Relaix
- INSERM U955 IMRB, Team 10, 94000 Creteil, France; UPEC Paris Est-Creteil University, Faculty of Medicine, F-94000 Creteil, France; Etablissement Français du Sang, 94017 Creteil, France; Université Paris Est, Ecole Nationale Veterinaire d'Alfort, 94700 Maison Alfort, France.
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39
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Martins AF, Xavier Neto J, Azambuja A, Sereno ML, Figueira A, Campos-Junior PH, Rosário MF, Toledo CBB, Silva GAB, Kitten GT, Coutinho LL, Dietrich S, Jorge EC. Repulsive Guidance Molecules a, b and c Are Skeletal Muscle Proteins, and Repulsive Guidance Molecule a Promotes Cellular Hypertrophy and Is Necessary for Myotube Fusion. Cells Tissues Organs 2015; 200:326-38. [PMID: 26397945 DOI: 10.1159/000433491] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/21/2015] [Indexed: 11/19/2022] Open
Abstract
Repulsive guidance molecules (RGMs) compose a family of glycosylphosphatidylinositol (GPI)-anchored axon guidance molecules and perform several functions during neural development. New evidence has suggested possible new roles for these axon guidance molecules during skeletal muscle development, which has not been investigated thus far. In the present study, we show that RGMa, RGMb and RGMc are all induced during skeletal muscle differentiation in vitro. Immunolocalization performed on adult skeletal muscle cells revealed that RGMa, RGMb and RGMc are sarcolemmal proteins. Additionally, RGMa was found to be a sarcoplasmic protein with a surprisingly striated pattern. RGMa colocalization with known sarcoplasmic proteins suggested that this axon guidance molecule is a skeletal muscle sarcoplasmic protein. Western blot analysis revealed two RGMa fragments of 60 and 33 kDa, respectively, in adult skeletal muscle samples. RGMa phenotypes in skeletal muscle cells (C2C12 and primary myoblasts) were also investigated. RGMa overexpression produced hypertrophic cells, whereas RGMa knockdown resulted in the opposite phenotype. RGMa knockdown also blocked myotube formation in both skeletal muscle cell types. Our results are the first to show an axon guidance molecule as a skeletal muscle sarcoplasmic protein and to include RGMa in a system that regulates skeletal muscle cell size and differentiation.
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Affiliation(s)
- Aline Fagundes Martins
- Departamento de Morfologia, Instituto de Cix00EA;ncias Biolx00F3;gicas, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
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40
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Heher P, Maleiner B, Prüller J, Teuschl AH, Kollmitzer J, Monforte X, Wolbank S, Redl H, Rünzler D, Fuchs C. A novel bioreactor for the generation of highly aligned 3D skeletal muscle-like constructs through orientation of fibrin via application of static strain. Acta Biomater 2015; 24:251-65. [PMID: 26141153 DOI: 10.1016/j.actbio.2015.06.033] [Citation(s) in RCA: 114] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2015] [Revised: 06/10/2015] [Accepted: 06/29/2015] [Indexed: 01/31/2023]
Abstract
The generation of functional biomimetic skeletal muscle constructs is still one of the fundamental challenges in skeletal muscle tissue engineering. With the notion that structure strongly dictates functional capabilities, a myriad of cell types, scaffold materials and stimulation strategies have been combined. To further optimize muscle engineered constructs, we have developed a novel bioreactor system (MagneTissue) for rapid engineering of skeletal muscle-like constructs with the aim to resemble native muscle in terms of structure, gene expression profile and maturity. Myoblasts embedded in fibrin, a natural hydrogel that serves as extracellular matrix, are subjected to mechanical stimulation via magnetic force transmission. We identify static mechanical strain as a trigger for cellular alignment concomitant with the orientation of the scaffold into highly organized fibrin fibrils. This ultimately yields myotubes with a more mature phenotype in terms of sarcomeric patterning, diameter and length. On the molecular level, a faster progression of the myogenic gene expression program is evident as myogenic determination markers MyoD and Myogenin as well as the Ca(2+) dependent contractile structural marker TnnT1 are significantly upregulated when strain is applied. The major advantage of the MagneTissue bioreactor system is that the generated tension is not exclusively relying on the strain generated by the cells themselves in response to scaffold anchoring but its ability to subject the constructs to individually adjustable strain protocols. In future work, this will allow applying mechanical stimulation with different strain regimes in the maturation process of tissue engineered constructs and elucidating the role of mechanotransduction in myogenesis. STATEMENT OF SIGNIFICANCE Mechanical stimulation of tissue engineered skeletal muscle constructs is a promising approach to increase tissue functionality. We have developed a novel bioreactor-based 3D culture system, giving the user the possibility to apply different strain regimes like static, cyclic or ramp strain to myogenic precursor cells embedded in a fibrin scaffold. Application of static mechanical strain leads to alignment of fibrin fibrils along the axis of strain and concomitantly to highly aligned myotube formation. Additionally, the pattern of myogenic gene expression follows the temporal progression observed in vivo with a more thorough induction of the myogenic program when static strain is applied. Ultimately, the strain protocol used in this study results in a higher degree of muscle maturity demonstrated by enhanced sarcomeric patterning and increased myotube diameter and length. The introduced bioreactor system enables new possibilities in muscle tissue engineering as longer cultivation periods and different strain applications will yield tissue engineered muscle-like constructs with improved characteristics in regard to functionality and biomimicry.
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41
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Nogueira JM, Hawrot K, Sharpe C, Noble A, Wood WM, Jorge EC, Goldhamer DJ, Kardon G, Dietrich S. The emergence of Pax7-expressing muscle stem cells during vertebrate head muscle development. Front Aging Neurosci 2015; 7:62. [PMID: 26042028 PMCID: PMC4436886 DOI: 10.3389/fnagi.2015.00062] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2015] [Accepted: 04/10/2015] [Indexed: 12/13/2022] Open
Abstract
Pax7 expressing muscle stem cells accompany all skeletal muscles in the body and in healthy individuals, efficiently repair muscle after injury. Currently, the in vitro manipulation and culture of these cells is still in its infancy, yet muscle stem cells may be the most promising route toward the therapy of muscle diseases such as muscular dystrophies. It is often overlooked that muscular dystrophies affect head and body skeletal muscle differently. Moreover, these muscles develop differently. Specifically, head muscle and its stem cells develop from the non-somitic head mesoderm which also has cardiac competence. To which extent head muscle stem cells retain properties of the early head mesoderm and might even be able to switch between a skeletal muscle and cardiac fate is not known. This is due to the fact that the timing and mechanisms underlying head muscle stem cell development are still obscure. Consequently, it is not clear at which time point one should compare the properties of head mesodermal cells and head muscle stem cells. To shed light on this, we traced the emergence of head muscle stem cells in the key vertebrate models for myogenesis, chicken, mouse, frog and zebrafish, using Pax7 as key marker. Our study reveals a common theme of head muscle stem cell development that is quite different from the trunk. Unlike trunk muscle stem cells, head muscle stem cells do not have a previous history of Pax7 expression, instead Pax7 expression emerges de-novo. The cells develop late, and well after the head mesoderm has committed to myogenesis. We propose that this unique mechanism of muscle stem cell development is a legacy of the evolutionary history of the chordate head mesoderm.
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Affiliation(s)
- Julia Meireles Nogueira
- School of Pharmacy and Biomedical Sciences, Institute for Biomedical and Biomolecular Science, University of Portsmouth Portsmouth, UK ; Departamento de Morfologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais Belo Horizonte, Brazil
| | - Katarzyna Hawrot
- School of Pharmacy and Biomedical Sciences, Institute for Biomedical and Biomolecular Science, University of Portsmouth Portsmouth, UK
| | - Colin Sharpe
- School of Biological Sciences, Institute for Biomedical and Biomolecular Science, University of Portsmouth Portsmouth, UK
| | - Anna Noble
- European Xenopus Resource Centre, School of Biological Sciences, University of Portsmouth Portsmouth, UK
| | - William M Wood
- Department of Molecular and Cell Biology, University of Connecticut Stem Cell Institute, University of Connecticut Storrs, CT, USA
| | - Erika C Jorge
- Departamento de Morfologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais Belo Horizonte, Brazil
| | - David J Goldhamer
- Department of Molecular and Cell Biology, University of Connecticut Stem Cell Institute, University of Connecticut Storrs, CT, USA
| | - Gabrielle Kardon
- Department of Human Genetics, University of Utah Salt Lake City, UT, USA
| | - Susanne Dietrich
- School of Pharmacy and Biomedical Sciences, Institute for Biomedical and Biomolecular Science, University of Portsmouth Portsmouth, UK
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Du M, Wang B, Fu X, Yang Q, Zhu MJ. Fetal programming in meat production. Meat Sci 2015; 109:40-7. [PMID: 25953215 DOI: 10.1016/j.meatsci.2015.04.010] [Citation(s) in RCA: 84] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2015] [Revised: 04/14/2015] [Accepted: 04/16/2015] [Indexed: 12/23/2022]
Abstract
Nutrient fluctuations during the fetal stage affects fetal development, which has long-term impacts on the production efficiency and quality of meat. During the early development, a pool of mesenchymal progenitor cells proliferate and then diverge into either myogenic or adipogenic/fibrogenic lineages. Myogenic progenitor cells further develop into muscle fibers and satellite cells, while adipogenic/fibrogenic lineage cells develop into adipocytes, fibroblasts and resident fibro-adipogenic progenitor cells. Enhancing the proliferation and myogenic commitment of progenitor cells during fetal development enhances muscle growth and lean production in offspring. On the other hand, promoting the adipogenic differentiation of adipogenic/fibrogenic progenitor cells inside the muscle increases intramuscular adipocytes and reduces connective tissue, which improves meat marbling and tenderness. Available studies in mammalian livestock, including cattle, sheep and pigs, clearly show the link between maternal nutrition and the quantity and quality of meat production. Similarly, chicken muscle fibers develop before hatching and, thus, egg and yolk sizes and hatching temperature affect long-term growth performance and meat production of chicken. On the contrary, because fishes are able to generate new muscle fibers lifelong, the impact of early nutrition on fish growth performance is expected to be minor, which requires further studies.
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Affiliation(s)
- Min Du
- Department of Animal Sciences, Washington State University, Pullman, WA 99164, United States.
| | - Bo Wang
- Department of Animal Sciences, Washington State University, Pullman, WA 99164, United States
| | - Xing Fu
- Department of Animal Sciences, Washington State University, Pullman, WA 99164, United States
| | - Qiyuan Yang
- Department of Animal Sciences, Washington State University, Pullman, WA 99164, United States
| | - Mei-Jun Zhu
- School of Food Science, Washington State University, Pullman, WA 99164, United States
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43
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Satellite cells: regenerative mechanisms and applicability in muscular dystrophy. Stem Cells Int 2015; 2015:487467. [PMID: 25763072 PMCID: PMC4339711 DOI: 10.1155/2015/487467] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2014] [Revised: 12/17/2014] [Accepted: 01/08/2015] [Indexed: 11/17/2022] Open
Abstract
The satellite cells are long regarded as heterogeneous cell population, which is intimately linked to the processes of muscular recovery. The heterogeneous cell population may be classified by specific markers. In spite of the significant amount of variation amongst the satellite cell populations, it seems that their activity is tightly bound to the paired box 7 transcription factor expression, which is, therefore, used as a canonical marker for these cells. Muscular dystrophic diseases, such as Duchenne muscular dystrophy, elicit severe tissue injuries leading those patients to display a very specific pattern of muscular recovery abnormalities. There have been works on the application of precursors cells as a therapeutic alternative for Duchenne muscular dystrophy and initial attempts have proven the cells inefficient; however later endeavours have proposed solutions for the experiments improving significantly the results. The presence of a range of satellite cells populations indicates the existence of specific cells with enhanced capability of muscular recovery in afflicted muscles.
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44
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Mohsen-Kanson T, Hafner AL, Wdziekonski B, Takashima Y, Villageois P, Carrière A, Svensson M, Bagnis C, Chignon-Sicard B, Svensson PA, Casteilla L, Smith A, Dani C. Differentiation of human induced pluripotent stem cells into brown and white adipocytes: role of Pax3. Stem Cells 2015; 32:1459-67. [PMID: 24302443 DOI: 10.1002/stem.1607] [Citation(s) in RCA: 63] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2013] [Accepted: 11/03/2013] [Indexed: 12/11/2022]
Abstract
Identification of molecular mechanisms involved in generation of different types of adipocytes is progressing substantially in mice. However, much less is known regarding characterization of brown (BAP) and white adipocyte progenitors (WAPs) in humans, highlighting the need for an in vitro model of human adipocyte development. Here, we report a procedure to selectively derive BAP and WAPs from human-induced pluripotent stem cells. Molecular characterization of APs of both phenotypes revealed that BMP4, Hox8, Hoxc9, and HoxA5 genes were specifically expressed in WAPs, whereas expression of PRDM16, Dio2, and Pax3 marked BAPs. We focused on Pax3 and we showed that expression of this transcription factor was enriched in human perirenal white adipose tissue samples expressing UCP1 and in human classical brown fat. Finally, functional experiments indicated that Pax3 was a critical player of human AP fate as its ectopic expression led to convert WAPs into brown-like APs. Together, these data support a model in which Pax3 is a new marker of human BAPs and a molecular mediator of their fate. The findings of this study could lead to new anti-obesity therapies based on the recruitment of APs and constitute a platform for investigating in vitro the developmental origins of human white and brown adipocytes.
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Affiliation(s)
- Tala Mohsen-Kanson
- Université Nice Sophia Antipolis, iBV, UMR CNRS/INSERM, Faculté de Médecine, Nice Cedex, France
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45
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Rocheteau P, Vinet M, Chretien F. Dormancy and quiescence of skeletal muscle stem cells. Results Probl Cell Differ 2015; 56:215-35. [PMID: 25344673 DOI: 10.1007/978-3-662-44608-9_10] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
The skeletal muscle of vertebrates has a huge regenerative capacity. When destroyed after different types of injury, this organ can regenerate very quickly (less than 20 days following myotoxin injection in the mouse) ad integrum and repeatedly. The cell responsible for this regeneration is the so-called satellite cell, the muscle stem cell that lies on top of the muscle fibre, a giant, multinucleated cell that contains the contractile material. When injected in the muscle, satellite cells can efficiently differentiate into contractile muscle fibres. The satellite cell shows great therapeutic potential; and its regenerative capacity has triggered particular interest in the field of muscular degeneration. In this review we will focus on one particular property of the satellite cell: its quiescence and dormancy. Indeed adult satellite cells are quiescent; they lie between the basal lamina and the basement membrane of the muscle fibre, ready to proliferate, and fuse in order to regenerate myofibers upon injury. It has recently been shown that a subpopulation of satellite cells is able to enter dormancy in human and mice cadavers. Dormancy is defined by a low metabolic state, low mobility, and a long lag before division when plated in vitro, compared to quiescent cells. This definition is also based on current knowledge about long-term hematopoietic stem cells, a subpopulation of stem cells that are described as dormant based on the same criteria (rare division and low metabolism when compared to progeny which are dividing more often). In the first part of this review, we will provide a description of satellite cells which addresses their quiescent state. We will then focus on the uneven distribution of satellite cells in the muscle and describe evidence that suggests that their dormancy differs from one muscle to the next and that one should be cautious when making generalisations regarding this cellular state. In a second part, we will discuss the transition between active dividing cells in developing animals to quiescence. This mechanism could be used or amplified in the switch from quiescence to dormancy. In a third part, we will review the signals and dynamics that actively maintain the satellite cell quiescent. The in-depth understanding of these mechanisms is key to describing how dormancy relies on quiescent state of the cells. In a fourth part, we will deal with dormancy per se: how dormant satellite cells can be obtained, their characteristics, their metabolic profile, and their molecular signature as compared to quiescent cells. Here, we will highlight one of the most important recent findings: that quiescence is a prerequisite for the entry of the satellite cell into dormancy. Since dormancy is a newly discovered phenomenon, we will review the mechanisms responsible for quiescence and activation, as these two cellular states are better known and key to understanding satellite cell dormancy. This will allow us to describe dormancy and its prerequisites.
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Affiliation(s)
- Pierre Rocheteau
- Human histopathology and animal models, Institut Pasteur, 28 rue du Dr. Roux, 75724, Paris Cedex 15, France
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46
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Papa V, Wannenes F, Crescioli C, Caporossi D, Lenzi A, Migliaccio S, Di Luigi L. The environmental pollutant cadmium induces homeostasis alteration in muscle cells in vitro. J Endocrinol Invest 2014; 37:1073-80. [PMID: 25149082 DOI: 10.1007/s40618-014-0145-y] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/08/2014] [Accepted: 07/26/2014] [Indexed: 12/30/2022]
Abstract
BACKGROUND Cadmium (Cd) is a heavy metal widely distributed throughout the environment as a result of contamination from a variety of sources. It exerts toxic effects in many tissues but scarce data are present as yet on potential effects on skeletal muscle tissue. AIM To evaluate the potential alteration induced by Cd in skeletal muscle cells. MATERIALS AND METHODS C2C12 skeletal muscle cells were treated with Cd at different times of cellular differentiation and gene expression was evaluated. RESULTS Exposure to Cd decreased significantly p21 mRNA expression and strongly up-regulated cyclin D1 mRNA expression in committed cells and in differentiated myotubes. Moreover, myogenin, fast MyHC-IIb and slow MyHC-I mRNAs expression were also significantly decreased both in committed cells and in myotubes. Moreover, Cd exposure induced a strong increase of Pax3, Pax7 and Myf5 mRNAs expression and stimulated an up-regulation of IL6 and TNF-α proinflammatory cytokines. CONCLUSION These data lead to hypothesize that environmental Cd exposure might trigger an injury-like event in muscle tissue, possibly by an estrogen receptor-mediated mechanism.
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Affiliation(s)
- V Papa
- Department of Movement, Human and Health Sciences, Section of Health Sciences, University of Rome "Foro Italico", Piazza L. de Bosis 15, 00135, Rome, Italy
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Falagán N, Artés F, Gómez PA, Artés-Hernández F, Conejero W, Aguayo E. Deficit irrigation strategies combined with controlled atmosphere preserve quality in early peaches. FOOD SCI TECHNOL INT 2014; 21:547-56. [PMID: 25280939 DOI: 10.1177/1082013214553997] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2014] [Accepted: 09/03/2014] [Indexed: 11/15/2022]
Abstract
Due to the water scarcity in the Mediterranean countries, irrigation must be optimized while keeping fruit quality. The effect of deficit irrigation strategies on changes in quality parameters of the early "Flordastar" peaches was studied. The deficit irrigation was programmed according to signal intensity of the maximum daily trunk shrinkage; deficit irrigation plants were irrigated to maintain maximum daily trunk shrinkage signal intensity values close to 1.4 or 1.3 in the case of DI1 or DI2 plants, respectively. Results were compared to a control watered at 150% crop evapotranspiration. Fruits were stored up to 14 days at 0 ℃ and 95% Relative Humidity (RH) in air or in controlled atmosphere (controlled atmosphere; 3-4 kPa O2 and 12-14 kPa CO2), followed by a retail sale period of 4 days at 15 ℃ and 90-95% Relative Humidity in air. Weight losses were lower in controlled atmosphere stored peaches from deficit irrigation. Air-stored fruits developed a more intense red color due to a faster ripening, which was not affected by the type of watering. At harvest, deficit irrigation peaches showed higher soluble solids content, which provided a better sensory evaluation. The soluble phenolic content was initially higher (55.26 ± 0.18 mg gallic acid equivalents/100 g fresh weight) and more stable throughout postharvest life in DI1 fruits than in those from the other irrigation treatments. Concerning vitamin C, control fruits at harvest showed higher ascorbic acid than dehydroascorbic acid content (5.43 versus 2.43 mg/100 g fresh weight, respectively), while water stressed peaches showed the opposite results. The combination of DI2 and controlled atmosphere storage allowed saving a significant amount of water and provided peaches with good overall quality, maintaining the bioactive compounds analyzed.
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Affiliation(s)
- Natalia Falagán
- Postharvest and Refrigeration Group, Universidad Politécnica de Cartagena (UPCT), Murcia, Spain Institute of Plant Biotechnology, UPCT, Murcia, Spain
| | - Francisco Artés
- Postharvest and Refrigeration Group, Universidad Politécnica de Cartagena (UPCT), Murcia, Spain Institute of Plant Biotechnology, UPCT, Murcia, Spain
| | - Perla A Gómez
- Institute of Plant Biotechnology, UPCT, Murcia, Spain
| | - Francisco Artés-Hernández
- Postharvest and Refrigeration Group, Universidad Politécnica de Cartagena (UPCT), Murcia, Spain Institute of Plant Biotechnology, UPCT, Murcia, Spain
| | | | - Encarna Aguayo
- Postharvest and Refrigeration Group, Universidad Politécnica de Cartagena (UPCT), Murcia, Spain Institute of Plant Biotechnology, UPCT, Murcia, Spain
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48
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Ravel-Chapuis A, Crawford TE, Blais-Crépeau ML, Bélanger G, Richer CT, Jasmin BJ. The RNA-binding protein Staufen1 impairs myogenic differentiation via a c-myc-dependent mechanism. Mol Biol Cell 2014; 25:3765-78. [PMID: 25208565 PMCID: PMC4230783 DOI: 10.1091/mbc.e14-04-0895] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
The expression pattern of Staufen1 during mouse skeletal muscle development is described. Sustained expression of Staufen1 in myoblasts prevents normal differentiation by causing decreases in the expression of key myogenic markers by an SMD-independent mechanism and by promoting the translational regulation of c-myc. Recent work has shown that Staufen1 plays key roles in skeletal muscle, yet little is known about its pattern of expression during embryonic and postnatal development. Here we first show that Staufen1 levels are abundant in mouse embryonic muscles and that its expression decreases thereafter, reaching low levels in mature muscles. A similar pattern of expression is seen as cultured myoblasts differentiate into myotubes. Muscle degeneration/regeneration experiments revealed that Staufen1 increases after cardiotoxin injection before returning to the low levels seen in mature muscles. We next prevented the decrease in Staufen1 during differentiation by generating stable C2C12 muscle cell lines overexpressing Staufen1. Cells overexpressing Staufen1 differentiated poorly, as evidenced by reductions in the differentiation and fusion indices and decreases in MyoD, myogenin, MEF2A, and MEF2C, independently of Staufen-mediated mRNA decay. However, levels of c-myc, a factor known to inhibit differentiation, were increased in C2C12 cells overexpressing Staufen1 through enhanced translation. By contrast, the knockdown of Staufen1 decreased c-myc levels in myoblasts. Collectively our results show that Staufen1 is highly expressed during early stages of differentiation/development and that it can impair differentiation by regulating c-myc, thereby highlighting the multifunctional role of Staufen1 in skeletal muscle cells.
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Affiliation(s)
- Aymeric Ravel-Chapuis
- Department of Cellular and Molecular Medicine, Faculty of Medicine, University of Ottawa, Ottawa, ON K1H 8M5, Canada
| | - Tara E Crawford
- Department of Cellular and Molecular Medicine, Faculty of Medicine, University of Ottawa, Ottawa, ON K1H 8M5, Canada
| | - Marie-Laure Blais-Crépeau
- Department of Cellular and Molecular Medicine, Faculty of Medicine, University of Ottawa, Ottawa, ON K1H 8M5, Canada
| | - Guy Bélanger
- Department of Cellular and Molecular Medicine, Faculty of Medicine, University of Ottawa, Ottawa, ON K1H 8M5, Canada
| | - Chase T Richer
- Department of Cellular and Molecular Medicine, Faculty of Medicine, University of Ottawa, Ottawa, ON K1H 8M5, Canada
| | - Bernard J Jasmin
- Department of Cellular and Molecular Medicine, Faculty of Medicine, University of Ottawa, Ottawa, ON K1H 8M5, Canada
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49
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Wu SL, Li GZ, Chou CY, Tsai MS, Chen YP, Li CJ, Liou GG, Chang WW, Chen SL, Wang SH. Double homeobox gene, Duxbl, promotes myoblast proliferation and abolishes myoblast differentiation by blocking MyoD transactivation. Cell Tissue Res 2014; 358:551-66. [PMID: 25130140 DOI: 10.1007/s00441-014-1974-x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2014] [Accepted: 07/21/2014] [Indexed: 01/08/2023]
Abstract
Homeobox genes encode transcription factors that regulate embryonic development programs including organogenesis, axis formation and limb development. Previously, we identified and cloned a mouse double homeobox gene, Duxbl, whose homeodomain exhibits the highest identity (67 %) to human DUX4, a candidate gene of facioscapulohumeral muscular dystrophy (FSHD). Duxbl proteins have been shown to be expressed in elongated myocytes and myotubes of trunk and limb muscles during embryogenesis. In this study, we found that Duxbl maintained low expression levels in various adult muscles. Duxbl proteins were induced to express in activated satellite cells and colocalized with MyoG, a myogenic differentiating marker. Furthermore, Duxbl proteins were not detected in quiescent satellite cells but detected in regenerated myocytes and colocalized with MyoD and MyoG following cardiotoxin-induced muscle injury. Ectopic Duxbl overexpressions in C2C12 myoblast cells promoted cell proliferation through mainly enhancing cyclin D1 and hyper-phosphorylated retinoblastoma protein but reducing p21 expression. However, Duxbl overexpression in C2C12 cells inhibited myogenic differentiation by decreasing MyoD downstream gene expressions, including M-cadherin, MyoG, p21 and cyclin D3 but not MyoD itself. Duxbl overexpressions also promoted cell proliferation but blocked MyoD-induced myogenic conversion in multipotent mesenchymal C3H10T1/2 cells. In addition, results of a luciferase reporter assay suggest that Duxbl negatively regulated MyoG promoter activity through the proximal two E boxes. In conclusion, these results indicate that Duxbl may play a crucial role in myogenesis and postnatal muscle regeneration by activating and proliferating satellite and myoblast cells.
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Affiliation(s)
- Shey-Lin Wu
- Department of Neurology, Chang-Hua Christian Hospital, Changhua, Taiwan, Republic of China
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50
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Narasimhan M, Hong J, Atieno N, Muthusamy VR, Davidson CJ, Abu-Rmaileh N, Richardson RS, Gomes AV, Hoidal JR, Rajasekaran NS. Nrf2 deficiency promotes apoptosis and impairs PAX7/MyoD expression in aging skeletal muscle cells. Free Radic Biol Med 2014; 71:402-414. [PMID: 24613379 PMCID: PMC4493911 DOI: 10.1016/j.freeradbiomed.2014.02.023] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/20/2013] [Revised: 02/17/2014] [Accepted: 02/25/2014] [Indexed: 12/20/2022]
Abstract
Skeletal muscle redox homeostasis is transcriptionally regulated by nuclear erythroid-2-p45-related factor-2 (Nrf2). We recently demonstrated that age-associated stress impairs Nrf2-ARE (antioxidant-response element) transcriptional signaling. Here, we hypothesize that age-dependent decline or genetic ablation of Nrf2 leads to accelerated apoptosis and skeletal muscle degeneration. Under basal-physiological conditions, disruption of Nrf2 significantly downregulates antioxidants and causes oxidative stress. Surprisingly, Nrf2-null mice had enhanced antioxidant capacity identical to wild-type (WT) upon acute endurance exercise stress (AEES), suggesting activation of Nrf2-independent mechanisms (i.e., PGC1α) against oxidative stress. Analysis of prosurvival pathways in the basal state reveals decreased AKT levels, whereas p-p53, a repressor of AKT, was increased in Nrf2-null vs WT mice. Upon AEES, AKT and p-AKT levels were significantly (p < 0.001) increased (>10-fold) along with profound downregulation of p-p53 (p < 0.01) in Nrf2-null vs WT skeletal muscle, indicating the onset of prosurvival mechanisms to compensate for the loss of Nrf2 signaling. However, we found a decreased stem cell population (PAX7) and MyoD expression (differentiation) along with profound activation of ubiquitin and apoptotic pathways in Nrf2-null vs WT mice upon AEES, suggesting that compensatory prosurvival mechanisms failed to overcome the programmed cell death and degeneration in skeletal muscle. Further, the impaired regeneration was sustained in Nrf2-null vs WT mice after 1 week of post-AEES recovery. In an age-associated oxidative stress condition, ablation of Nrf2 results in induction of apoptosis and impaired muscle regeneration.
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Affiliation(s)
- Madhusudhanan Narasimhan
- Department of Pharmacology and Neuroscience, Texas Tech University Health Sciences Center, Lubbock, TX 79430, USA; Cardiac Aging and Redox Signaling Laboratory, Division of Cardiology, Department of Internal Medicine, University of Utah School of Medicine, Salt Lake City, UT 84132, USA
| | - Jennifer Hong
- Cardiac Aging and Redox Signaling Laboratory, Division of Cardiology, Department of Internal Medicine, University of Utah School of Medicine, Salt Lake City, UT 84132, USA
| | - Nancy Atieno
- Cardiac Aging and Redox Signaling Laboratory, Division of Cardiology, Department of Internal Medicine, University of Utah School of Medicine, Salt Lake City, UT 84132, USA
| | - Vasanthi R Muthusamy
- Cardiac Aging and Redox Signaling Laboratory, Division of Cardiology, Department of Internal Medicine, University of Utah School of Medicine, Salt Lake City, UT 84132, USA
| | - Christopher J Davidson
- Cardiac Aging and Redox Signaling Laboratory, Division of Cardiology, Department of Internal Medicine, University of Utah School of Medicine, Salt Lake City, UT 84132, USA
| | - Naser Abu-Rmaileh
- Cardiac Aging and Redox Signaling Laboratory, Division of Cardiology, Department of Internal Medicine, University of Utah School of Medicine, Salt Lake City, UT 84132, USA
| | - Russell S Richardson
- Division of Geriatrics, and Department of Internal Medicine, University of Utah School of Medicine, Salt Lake City, UT 84132, USA; Department of Exercise & Sports Sciences, College of Health, University of Utah, Salt Lake City, UT 84112, USA; Geriatric Research, Education, and Clinical Center, Salt Lake City Veteran's Medical Center
| | | | - John R Hoidal
- Division of Pulmonary Medicine, Department of Internal Medicine, University of Utah School of Medicine, Salt Lake City, UT 84132, USA
| | - Namakkal S Rajasekaran
- Cardiac Aging and Redox Signaling Laboratory, Division of Cardiology, Department of Internal Medicine, University of Utah School of Medicine, Salt Lake City, UT 84132, USA; Department of Exercise & Sports Sciences, College of Health, University of Utah, Salt Lake City, UT 84112, USA.
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