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Li H, Dong X, Wang L, Wen H, Qi X, Zhang K, Li Y. Genome-wide identification of Fgfr genes and function analysis of Fgfr4 in myoblasts differentiation of Lateolabrax maculatus. Gene 2024; 927:148717. [PMID: 38908457 DOI: 10.1016/j.gene.2024.148717] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/29/2024] [Revised: 05/29/2024] [Accepted: 06/19/2024] [Indexed: 06/24/2024]
Abstract
Fibroblast growth factor receptors (Fgfrs) are involved in cell proliferation, differentiation, and migration via complex signaling pathways in different tissues. Our previous studies showed that fibroblast growth factor receptor 4 (fgfr4) was detected in the most significant quantitative trait loci (QTL) for growth traits. However, studies focusing on the function of fgfr4 on the growth of bony fish are still limited. In this study, we identified seven fgfr genes in spotted sea bass (Lateolabrax maculatus) genome, namely fgfr1a, fgfr1b, fgfr2, fgfr3, fgfr4, fgfr5a, and fgfr5b. Phylogenetic analysis, syntenic analysis and gene structure analysis were conducted to further support the accuracy of our annotation and classification results. Additionally, fgfr4 showed the highest expression levels among fgfrs during the proliferation and differentiation stages of spotted sea bass myoblasts. To further study the function of fgfr4 in myogenesis, dual-fluorescence in situ hybridization (ISH) assay was conducted, and the results showed co-localization of fgfr4 with marker gene of skeletal muscle satellite cells. By treating differentiating myoblasts cultured in vitro with BLU-554, the mRNA expressions of myogenin (myog) and the numbers of myotubes formed by myoblasts increased significantly compared to negative control group. These results indicated that Fgfr4 inhibits the differentiation of myoblasts in spotted sea bass. Our findings contributed to filling a research gap on fgfr4 in bony fish myogenesis and the theoretical understanding of growth trait regulation of spotted sea bass.
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Affiliation(s)
- Hao Li
- Key Laboratory of Mariculture, Ministry of Education (KLMME), Ocean University of China, Qingdao 266003, China
| | - Ximeng Dong
- Key Laboratory of Mariculture, Ministry of Education (KLMME), Ocean University of China, Qingdao 266003, China
| | - Lingyu Wang
- Key Laboratory of Mariculture, Ministry of Education (KLMME), Ocean University of China, Qingdao 266003, China
| | - Haishen Wen
- Key Laboratory of Mariculture, Ministry of Education (KLMME), Ocean University of China, Qingdao 266003, China
| | - Xin Qi
- Key Laboratory of Mariculture, Ministry of Education (KLMME), Ocean University of China, Qingdao 266003, China
| | - Kaiqiang Zhang
- Key Laboratory of Mariculture, Ministry of Education (KLMME), Ocean University of China, Qingdao 266003, China
| | - Yun Li
- Key Laboratory of Mariculture, Ministry of Education (KLMME), Ocean University of China, Qingdao 266003, China; Sanya Oceanographic Institution, Ocean University of China, Sanya 572000, China.
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2
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Hour TC, Lan Nhi NT, Lai IJ, Chuu CP, Lin PC, Chang HW, Su YF, Chen CH, Chen YK. Kaempferol-Enhanced Migration and Differentiation of C2C12 Myoblasts via ITG1B/FAK/Paxillin and IGF1R/AKT/mTOR Signaling Pathways. Mol Nutr Food Res 2024; 68:e2300685. [PMID: 38860356 DOI: 10.1002/mnfr.202300685] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2023] [Revised: 04/30/2024] [Indexed: 06/12/2024]
Abstract
SCOPE Kaempferol (KMP), a bioactive flavonoid compound found in fruits and vegetables, contributes to human health in many ways but little is known about its relationship with muscle mass. The effect of KMP on C2C12 myoblast differentiation and the mechanisms that might underlie that effect are studied. METHODS AND RESULTS This study finds that KMP (1, 10 µM) increases the migration and differentiation of C2C12 myoblasts in vitro. Studying the possible mechanism underlying its effect on migration, the study finds that KMP activates Integrin Subunit Beta 1 (ITGB1) in C2C12 myoblasts, increasing p-FAK (Tyr398) and its downstream cell division cycle 42 (CDC42), a protein previously associated with cell migration. Regarding differentiation, KMP upregulates the expression of myosin heavy chain (MHC) and activates IGF1/AKT/mTOR/P70S6K. Interestingly, pretreatment with an AKT inhibitor (LY294002) and siRNA knockdown of IGF1R leads to a decrease in cell differentiation, suggesting that IGF1/AKT activation is required for KMP to induce C2C12 myoblast differentiation. CONCLUSION Together, the findings suggest that KMP enhances the migration and differentiation of C2C12 myoblasts through the ITG1B/FAK/paxillin and IGF1R/AKT/mTOR pathways. Thus, KMP supplementation might potentially be used to prevent or delay age-related loss of muscle mass and help maintain muscle health.
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Affiliation(s)
- Tzyh-Chyuan Hour
- Department of Biochemistry, School of Medicine, Kaohsiung Medical University, Kaohsiung, 807378, Taiwan
- Department of Medical Research, Kaohsiung Medical University Hospital, Kaohsiung, 807378, Taiwan
| | - Nguyen Thai Lan Nhi
- Department of Biochemistry, School of Medicine, Kaohsiung Medical University, Kaohsiung, 807378, Taiwan
| | - I-Ju Lai
- Department of Nutrition, I-Shou University, Kaohsiung, 82445, Taiwan
| | - Chih-Pin Chuu
- Institute of Cellular and System Medicine, National Health Research Institutes, Miaoli County, 350401, Taiwan
| | - Pei-Chen Lin
- Department of Oral Hygiene, Kaohsiung Medical University, Kaohsiung, 807378, Taiwan
| | - Hsi-Wen Chang
- Department of Biochemistry, School of Medicine, Kaohsiung Medical University, Kaohsiung, 807378, Taiwan
| | - Ying-Fang Su
- Department of Biochemistry, School of Medicine, Kaohsiung Medical University, Kaohsiung, 807378, Taiwan
| | - Chung-Hwan Chen
- Orthopaedic Research Center and Department of Orthopedics, Kaohsiung Medical University Hospital and Kaohsiung Municipal Ta-Tung Hospital, Kaohsiung Medical University, Kaohsiung, 807378, Taiwan
| | - Yu-Kuei Chen
- Department of Nutrition, I-Shou University, Kaohsiung, 82445, Taiwan
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Li J, Lin Y, Li D, He M, Kui H, Bai J, Chen Z, Gou Y, Zhang J, Wang T, Tang Q, Kong F, Jin L, Li M. Building Haplotype-Resolved 3D Genome Maps of Chicken Skeletal Muscle. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024; 11:e2305706. [PMID: 38582509 PMCID: PMC11200017 DOI: 10.1002/advs.202305706] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/15/2023] [Revised: 03/07/2024] [Indexed: 04/08/2024]
Abstract
Haplotype-resolved 3D chromatin architecture related to allelic differences in avian skeletal muscle development has not been addressed so far, although chicken husbandry for meat consumption has been prevalent feature of cultures on every continent for more than thousands of years. Here, high-resolution Hi-C diploid maps (1.2-kb maximum resolution) are generated for skeletal muscle tissues in chicken across three developmental stages (embryonic day 15 to day 30 post-hatching). The sequence features governing spatial arrangement of chromosomes and characterize homolog pairing in the nucleus, are identified. Multi-scale characterization of chromatin reorganization between stages from myogenesis in the fetus to myofiber hypertrophy after hatching show concordant changes in transcriptional regulation by relevant signaling pathways. Further interrogation of parent-of-origin-specific chromatin conformation supported that genomic imprinting is absent in birds. This study also reveals promoter-enhancer interaction (PEI) differences between broiler and layer haplotypes in skeletal muscle development-related genes are related to genetic variation between breeds, however, only a minority of breed-specific variations likely contribute to phenotypic divergence in skeletal muscle potentially via allelic PEI rewiring. Beyond defining the haplotype-specific 3D chromatin architecture in chicken, this study provides a rich resource for investigating allelic regulatory divergence among chicken breeds.
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Affiliation(s)
- Jing Li
- State Key Laboratory of Swine and Poultry Breeding IndustryCollege of Animal Science and TechnologySichuan Agricultural UniversityChengdu611130China
| | - Yu Lin
- State Key Laboratory of Swine and Poultry Breeding IndustryCollege of Animal Science and TechnologySichuan Agricultural UniversityChengdu611130China
| | - Diyan Li
- School of PharmacyChengdu UniversityChengdu610106China
| | - Mengnan He
- Wildlife Conservation Research DepartmentChengdu Research Base of Giant Panda BreedingChengdu610057China
| | - Hua Kui
- State Key Laboratory of Swine and Poultry Breeding IndustryCollege of Animal Science and TechnologySichuan Agricultural UniversityChengdu611130China
| | - Jingyi Bai
- State Key Laboratory of Swine and Poultry Breeding IndustryCollege of Animal Science and TechnologySichuan Agricultural UniversityChengdu611130China
| | - Ziyu Chen
- State Key Laboratory of Swine and Poultry Breeding IndustryCollege of Animal Science and TechnologySichuan Agricultural UniversityChengdu611130China
| | - Yuwei Gou
- State Key Laboratory of Swine and Poultry Breeding IndustryCollege of Animal Science and TechnologySichuan Agricultural UniversityChengdu611130China
| | - Jiaman Zhang
- State Key Laboratory of Swine and Poultry Breeding IndustryCollege of Animal Science and TechnologySichuan Agricultural UniversityChengdu611130China
| | - Tao Wang
- School of PharmacyChengdu UniversityChengdu610106China
| | - Qianzi Tang
- State Key Laboratory of Swine and Poultry Breeding IndustryCollege of Animal Science and TechnologySichuan Agricultural UniversityChengdu611130China
| | - Fanli Kong
- College of Life ScienceSichuan Agricultural UniversityYa'an625014China
| | - Long Jin
- State Key Laboratory of Swine and Poultry Breeding IndustryCollege of Animal Science and TechnologySichuan Agricultural UniversityChengdu611130China
| | - Mingzhou Li
- State Key Laboratory of Swine and Poultry Breeding IndustryCollege of Animal Science and TechnologySichuan Agricultural UniversityChengdu611130China
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Ishida N, Kurosawa T, Goto M, Kaji N, Tokunaga Y, Mihara T, Hori M. Dasatinib promotes muscle differentiation and disrupts normal muscle regeneration. Int J Med Sci 2024; 21:1461-1471. [PMID: 38903922 PMCID: PMC11186431 DOI: 10.7150/ijms.94938] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/01/2024] [Accepted: 05/16/2024] [Indexed: 06/22/2024] Open
Abstract
Dasatinib is one of the second-generation tyrosine kinase inhibitors used to treat chronic myeloid leukemia and has a broad target spectrum, including KIT, PDGFR, and SRC family kinases. Due to its broad drug spectrum, dasatinib has been reported at the basic research level to improve athletic performance by eliminating senescent cell removal and to have an effect on muscle diseases such as Duchenne muscular dystrophy, but its effect on myoblasts has not been investigated. In this study, we evaluated the effects of dasatinib on skeletal muscle both under normal conditions and in the regenerating state. Dasatinib suppressed the proliferation and promoted the fusion of C2C12 myoblasts. During muscle regeneration, dasatinib increased the gene expressions of myogenic-related genes (Myod, Myog, and Mymx), and caused abnormally thin muscle fibers on the CTX-induced muscle injury mouse model. From these results, dasatinib changes the closely regulated gene expression pattern of myogenic regulatory factors during muscle differentiation and disrupts normal muscle regeneration. Our data suggest that when using dasatinib, its effects on skeletal muscle should be considered, particularly at regenerating stages.
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Affiliation(s)
- Nanami Ishida
- Laboratory of Veterinary Pharmacology, Department of Veterinary Medical Sciences, Graduate School of Agriculture and Life Sciences, Tokyo University, 1-1-1 Yayoi, Bunkyo-ku, Tokyo, 113-8657, Japan
| | - Tamaki Kurosawa
- Laboratory of Veterinary Pharmacology, Department of Veterinary Medical Sciences, Graduate School of Agriculture and Life Sciences, Tokyo University, 1-1-1 Yayoi, Bunkyo-ku, Tokyo, 113-8657, Japan
| | - Momo Goto
- Laboratory of Veterinary Pharmacology, Department of Veterinary Medical Sciences, Graduate School of Agriculture and Life Sciences, Tokyo University, 1-1-1 Yayoi, Bunkyo-ku, Tokyo, 113-8657, Japan
| | - Noriyuki Kaji
- Laboratory of Veterinary Pharmacology, School of Veterinary Medicine, Azabu University, 1-17-71, Fuchinobe, Chuo-ku, Sagamihara, Kanagawa, 252-5201, Japan
| | - Yayoi Tokunaga
- Laboratory of Veterinary Pharmacology, Department of Veterinary Medical Sciences, Graduate School of Agriculture and Life Sciences, Tokyo University, 1-1-1 Yayoi, Bunkyo-ku, Tokyo, 113-8657, Japan
| | - Taiki Mihara
- Laboratory of Veterinary Pharmacology, Department of Veterinary Medical Sciences, Graduate School of Agriculture and Life Sciences, Tokyo University, 1-1-1 Yayoi, Bunkyo-ku, Tokyo, 113-8657, Japan
| | - Masatoshi Hori
- Laboratory of Veterinary Pharmacology, Department of Veterinary Medical Sciences, Graduate School of Agriculture and Life Sciences, Tokyo University, 1-1-1 Yayoi, Bunkyo-ku, Tokyo, 113-8657, Japan
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Chen B, Cai H, Niu Y, Zhang Y, Wang Y, Liu Y, Han R, Liu X, Kang X, Li Z. Whole transcriptome profiling reveals a lncMDP1 that regulates myogenesis by adsorbing miR-301a-5p targeting CHAC1. Commun Biol 2024; 7:518. [PMID: 38698103 PMCID: PMC11066001 DOI: 10.1038/s42003-024-06226-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2023] [Accepted: 04/22/2024] [Indexed: 05/05/2024] Open
Abstract
Myoblast proliferation and differentiation are essential for skeletal muscle development. In this study, we generated the expression profiles of mRNAs, long noncoding RNAs (lncRNAs), and microRNAs (miRNAs) in different developmental stages of chicken primary myoblasts (CPMs) using RNA sequencing (RNA-seq) technology. The dual luciferase reporter system was performed using chicken embryonic fibroblast cells (DF-1), and functional studies quantitative real-time polymerase chain reaction (qPCR), cell counting kit-8 (CCK-8), 5-Ethynyl-2'-deoxyuridine (EdU), flow cytometry cycle, RNA fluorescence in situ hybridization (RNA-FISH), immunofluorescence, and western blotting assay. Our research demonstrated that miR-301a-5p had a targeted binding ability to lncMDP1 and ChaC glutathione-specific gamma-glutamylcyclotransferase 1 (CHAC1). The results revealed that lncMDP1 regulated the proliferation and differentiation of myoblasts via regulating the miR-301a-5p/CHAC1 axis, and CHAC1 promotes muscle regeneration. This study fulfilled the molecular regulatory network of skeletal muscle development and providing an important theoretical reference for the future improvement of chicken meat performance and meat quality.
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Affiliation(s)
- Bingjie Chen
- College of Animal Science and Technology, Henan Agricultural University, Zhengzhou, 450046, China
| | - Hanfang Cai
- College of Animal Science and Technology, Henan Agricultural University, Zhengzhou, 450046, China
| | - Yufang Niu
- College of Animal Science and Technology, Henan Agricultural University, Zhengzhou, 450046, China
| | - Yushi Zhang
- College of Animal Science and Technology, Henan Agricultural University, Zhengzhou, 450046, China
| | - Yanxing Wang
- College of Animal Science and Technology, Henan Agricultural University, Zhengzhou, 450046, China
| | - Yang Liu
- College of Animal Science and Technology, Henan Agricultural University, Zhengzhou, 450046, China
| | - Ruili Han
- College of Animal Science and Technology, Henan Agricultural University, Zhengzhou, 450046, China
- Henan Key Laboratory for Innovation and Utilization of Chicken Germplasm Resources, Zhengzhou, 450046, China
| | - Xiaojun Liu
- College of Animal Science and Technology, Henan Agricultural University, Zhengzhou, 450046, China
- Henan Key Laboratory for Innovation and Utilization of Chicken Germplasm Resources, Zhengzhou, 450046, China
| | - Xiangtao Kang
- College of Animal Science and Technology, Henan Agricultural University, Zhengzhou, 450046, China.
- Henan Key Laboratory for Innovation and Utilization of Chicken Germplasm Resources, Zhengzhou, 450046, China.
| | - Zhuanjian Li
- College of Animal Science and Technology, Henan Agricultural University, Zhengzhou, 450046, China.
- Henan Key Laboratory for Innovation and Utilization of Chicken Germplasm Resources, Zhengzhou, 450046, China.
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6
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Wu J, Yue B. Regulation of myogenic cell proliferation and differentiation during mammalian skeletal myogenesis. Biomed Pharmacother 2024; 174:116563. [PMID: 38583341 DOI: 10.1016/j.biopha.2024.116563] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2024] [Revised: 03/14/2024] [Accepted: 04/04/2024] [Indexed: 04/09/2024] Open
Abstract
Mammalian skeletal myogenesis is a complex process that allows precise control of myogenic cells' proliferation, differentiation, and fusion to form multinucleated, contractile, and functional muscle fibers. Typically, myogenic progenitors continue growth and division until acquiring a differentiated state, which then permanently leaves the cell cycle and enters terminal differentiation. These processes have been intensively studied using the skeletal muscle developing models in vitro and in vivo, uncovering a complex cellular intrinsic network during mammalian skeletal myogenesis containing transcription factors, translation factors, extracellular matrix, metabolites, and mechano-sensors. Examining the events and how they are knitted together will better understand skeletal myogenesis's molecular basis. This review describes various regulatory mechanisms and recent advances in myogenic cell proliferation and differentiation during mammalian skeletal myogenesis. We focus on significant cell cycle regulators, myogenic factors, and chromatin regulators impacting the coordination of the cell proliferation versus differentiation decision, which will better clarify the complex signaling underlying skeletal myogenesis.
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Affiliation(s)
- Jiyao Wu
- Key Laboratory of Qinghai-Tibetan Plateau Animal Genetic Resource Reservation and Utilization, Sichuan Province and Ministry of Education, Southwest Minzu University, Chengdu 610225, China; College of Animal Science (College of Bee Science), Fujian Agriculture and Forestry University, Fuzhou, China
| | - Binglin Yue
- Key Laboratory of Qinghai-Tibetan Plateau Animal Genetic Resource Reservation and Utilization, Sichuan Province and Ministry of Education, Southwest Minzu University, Chengdu 610225, China.
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Fu Y, Li S, Nie J, Yan D, Zhang B, Hao X, Zhang H. Expression of PDLIM5 Spliceosomes and Regulatory Functions on Myogenesis in Pigs. Cells 2024; 13:720. [PMID: 38667334 PMCID: PMC11049100 DOI: 10.3390/cells13080720] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2024] [Revised: 04/18/2024] [Accepted: 04/19/2024] [Indexed: 04/28/2024] Open
Abstract
Meat yield, determined by muscle growth and development, is an important economic trait for the swine industry and a focus of research in animal genetics and breeding. PDZ and LIM domain 5 (PDLIM5) are cytoskeleton-related proteins that play key roles in various tissues and cells. These proteins have multiple isoforms, primarily categorized as short (PDLIM5-short) and long (PDLIM5-long) types, distinguished by the absence and presence of an LIM domain, respectively. However, the expression patterns of swine PDLIM5 isoforms and their regulation during porcine skeletal muscle development remain largely unexplored. We observed that PDLIM5-long was expressed at very low levels in pig muscles and that PDLIM5-short and total PDLIM5 were highly expressed in the muscles of slow-growing pigs, suggesting that PDLIM5-short, the dominant transcript in pigs, is associated with a slow rate of muscle growth. PDLIM5-short suppressed myoblast proliferation and myogenic differentiation in vitro. We also identified two single nucleotide polymorphisms (-258 A > T and -191 T > G) in the 5' flanking region of PDLIM5, which influenced the activity of the promoter and were associated with muscle growth rate in pigs. In summary, we demonstrated that PDLIM5-short negatively regulates myoblast proliferation and differentiation, providing a theoretical basis for improving pig breeding programs.
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Affiliation(s)
- Yu Fu
- National Engineering Laboratory for Livestock and Poultry Breeding, Beijing Key Laboratory of Animal Genetic Engineering, China Agricultural University, Beijing 100193, China; (Y.F.); (S.L.); (J.N.); (B.Z.)
| | - Shixin Li
- National Engineering Laboratory for Livestock and Poultry Breeding, Beijing Key Laboratory of Animal Genetic Engineering, China Agricultural University, Beijing 100193, China; (Y.F.); (S.L.); (J.N.); (B.Z.)
| | - Jingru Nie
- National Engineering Laboratory for Livestock and Poultry Breeding, Beijing Key Laboratory of Animal Genetic Engineering, China Agricultural University, Beijing 100193, China; (Y.F.); (S.L.); (J.N.); (B.Z.)
| | - Dawei Yan
- College of Animal Science and Technology, Yunnan Agricultural University, Kunming 650201, China;
| | - Bo Zhang
- National Engineering Laboratory for Livestock and Poultry Breeding, Beijing Key Laboratory of Animal Genetic Engineering, China Agricultural University, Beijing 100193, China; (Y.F.); (S.L.); (J.N.); (B.Z.)
| | - Xin Hao
- National Engineering Laboratory for Livestock and Poultry Breeding, Beijing Key Laboratory of Animal Genetic Engineering, China Agricultural University, Beijing 100193, China; (Y.F.); (S.L.); (J.N.); (B.Z.)
| | - Hao Zhang
- National Engineering Laboratory for Livestock and Poultry Breeding, Beijing Key Laboratory of Animal Genetic Engineering, China Agricultural University, Beijing 100193, China; (Y.F.); (S.L.); (J.N.); (B.Z.)
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Yun SH, Lee DY, Lee J, Mariano E, Choi Y, Park J, Han D, Kim JS, Hur SJ. Current Research, Industrialization Status, and Future Perspective of Cultured Meat. Food Sci Anim Resour 2024; 44:326-355. [PMID: 38764517 PMCID: PMC11097034 DOI: 10.5851/kosfa.2024.e13] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2023] [Revised: 01/24/2024] [Accepted: 01/30/2024] [Indexed: 05/21/2024] Open
Abstract
Expectations for the industrialization of cultured meat are growing due to the increasing support from various sectors, such as the food industry, animal welfare organizations, and consumers, particularly vegetarians, but the progress of industrialization is slower than initially reported. This review analyzes the main issues concerning the industrialization of cultured meat, examines research and media reports on the development of cultured meat to date, and presents the current technology, industrialization level, and prospects for cultured meat. Currently, over 30 countries have companies industrializing cultured meat, and around 200 companies that are developing or industrializing cultured meat have been surveyed globally. By country, the United States has over 50 companies, accounting for more than 20% of the total. Acquiring animal cells, developing cell lines, improving cell proliferation, improving the efficiency of cell differentiation and muscle production, or developing cell culture media, including serum-free media, are the major research themes related to the development of cultured meat. In contrast, the development of devices, such as bioreactors, which are crucial in enabling large-scale production, is relatively understudied, and few of the many companies invested in the development of cultured meat have presented products for sale other than prototypes. In addition, because most information on key technologies is not publicly available, it is not possible to determine the level of technology in the companies, and it is surmised that the technology of cultured meat-related startups is not high. Therefore, further research and development are needed to promote the full-scale industrialization of cultured meat.
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Affiliation(s)
- Seung Hyeon Yun
- Department of Animal Science and
Technology, Chung-Ang University, Anseong 17546, Korea
| | - Da Young Lee
- Department of Animal Science and
Technology, Chung-Ang University, Anseong 17546, Korea
| | - Juhyun Lee
- Department of Animal Science and
Technology, Chung-Ang University, Anseong 17546, Korea
| | - Ermie Mariano
- Department of Animal Science and
Technology, Chung-Ang University, Anseong 17546, Korea
| | - Yeongwoo Choi
- Department of Animal Science and
Technology, Chung-Ang University, Anseong 17546, Korea
| | - Jinmo Park
- Department of Animal Science and
Technology, Chung-Ang University, Anseong 17546, Korea
| | - Dahee Han
- Department of Animal Science and
Technology, Chung-Ang University, Anseong 17546, Korea
| | - Jin Soo Kim
- Department of Animal Science and
Technology, Chung-Ang University, Anseong 17546, Korea
| | - Sun Jin Hur
- Department of Animal Science and
Technology, Chung-Ang University, Anseong 17546, Korea
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9
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Mohamad Yusoff F, Nakashima A, Kajikawa M, Kishimoto S, Maruhashi T, Higashi Y. Therapeutic Myogenesis Induced by Ultrasound Exposure in a Volumetric Skeletal Muscle Loss Injury Model. Am J Sports Med 2023; 51:3554-3566. [PMID: 37743748 DOI: 10.1177/03635465231195850] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 09/26/2023]
Abstract
BACKGROUND Low-intensity pulsed ultrasound (LIPUS) irradiation has been shown to induce various responses in different cells. It has been shown that LIPUS activates extracellular signal-regulated kinase 1/2 (ERK1/2) through integrin. PURPOSE To study the effects of LIPUS on myogenic regulatory factors and other related myogenesis elements in a volumetric skeletal muscle loss injury model. STUDY DESIGN Controlled laboratory study. METHODS C57BL/6J mice were subjected to full-thickness muscle defect injury of the quadriceps and treated with direct application of LIPUS 20 min/d or non-LIPUS treatment (control) for 3, 7, and 14 days. LIPUS was also applied to C2C12 cells in culture in the presence of low and high doses of lipopolysaccharides. The expression levels of myogenic regulatory factors and the expression levels of myokine-related and angiogenic-related proteins of the control and LIPUS groups were analyzed. RESULTS Muscle volume in the injury site was restored at day 14 with LIPUS treatment. Paired-box protein 7, myogenic factor 5, myogenin, and desmin expressions were significantly different between control and LIPUS groups at days 7 and 14. Myokine and angiogenic cytokine-related factors were significantly increased in the LIPUS group at day 3 and decreased with no significant difference between the groups by day 14. LIPUS induced different responses of myogenic regulatory factors in C2C12 cells with low and high doses of lipopolysaccharides. LIPUS promoted myogenesis through short-lived increase in interleukin-6 and heme oxygenase 1, together with activation of ERK1/2. CONCLUSION LIPUS had a constant effect on the variables of tissue damage, from macrotrauma to microtrauma, leading to efficient muscle regeneration. CLINICAL RELEVANCE The focus of therapeutic strategies with LIPUS has been not only for microvascular regeneration but also for skeletal muscle and related local tissue recovery from acute or chronic damage.
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Affiliation(s)
- Farina Mohamad Yusoff
- Department of Regenerative Medicine, Division of Radiation Medical Science, Research Institute for Radiation Biology and Medicine, Hiroshima University, Hiroshima, Japan
| | - Ayumu Nakashima
- Department of Stem Cell Biology and Medicine, Hiroshima University Graduate School of Biomedical Sciences, Hiroshima, Japan
| | - Masato Kajikawa
- Division of Regeneration and Medicine, Medical Center for Translational and Clinical Research, Hiroshima University Hospital, Hiroshima, Japan
| | - Shinji Kishimoto
- Department of Regenerative Medicine, Division of Radiation Medical Science, Research Institute for Radiation Biology and Medicine, Hiroshima University, Hiroshima, Japan
| | - Tatsuya Maruhashi
- Department of Regenerative Medicine, Division of Radiation Medical Science, Research Institute for Radiation Biology and Medicine, Hiroshima University, Hiroshima, Japan
| | - Yukihito Higashi
- Department of Regenerative Medicine, Division of Radiation Medical Science, Research Institute for Radiation Biology and Medicine, Hiroshima University, Hiroshima, Japan
- Division of Regeneration and Medicine, Medical Center for Translational and Clinical Research, Hiroshima University Hospital, Hiroshima, Japan
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10
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Duperray M, Hardet F, Henriet E, Saint-Marc C, Boué-Grabot E, Daignan-Fornier B, Massé K, Pinson B. Purine Biosynthesis Pathways Are Required for Myogenesis in Xenopus laevis. Cells 2023; 12:2379. [PMID: 37830593 PMCID: PMC10571971 DOI: 10.3390/cells12192379] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2023] [Revised: 09/20/2023] [Accepted: 09/25/2023] [Indexed: 10/14/2023] Open
Abstract
Purines are required for fundamental biological processes and alterations in their metabolism lead to severe genetic diseases associated with developmental defects whose etiology remains unclear. Here, we studied the developmental requirements for purine metabolism using the amphibian Xenopus laevis as a vertebrate model. We provide the first functional characterization of purine pathway genes and show that these genes are mainly expressed in nervous and muscular embryonic tissues. Morphants were generated to decipher the functions of these genes, with a focus on the adenylosuccinate lyase (ADSL), which is an enzyme required for both salvage and de novo purine pathways. adsl.L knockdown led to a severe reduction in the expression of the myogenic regulatory factors (MRFs: Myod1, Myf5 and Myogenin), thus resulting in defects in somite formation and, at later stages, the development and/or migration of both craniofacial and hypaxial muscle progenitors. The reduced expressions of hprt1.L and ppat, which are two genes specific to the salvage and de novo pathways, respectively, resulted in similar alterations. In conclusion, our data show for the first time that de novo and recycling purine pathways are essential for myogenesis and highlight new mechanisms in the regulation of MRF gene expression.
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Affiliation(s)
- Maëlle Duperray
- Institut de Biochimie et Génétique Cellulaires, CNRS, UMR 5095, Université de Bordeaux, F-33000 Bordeaux, France
| | - Fanny Hardet
- CNRS, IMN, UMR 5293, Université de Bordeaux, F-33000 Bordeaux, France
| | - Elodie Henriet
- CNRS, IMN, UMR 5293, Université de Bordeaux, F-33000 Bordeaux, France
| | - Christelle Saint-Marc
- Institut de Biochimie et Génétique Cellulaires, CNRS, UMR 5095, Université de Bordeaux, F-33000 Bordeaux, France
| | - Eric Boué-Grabot
- CNRS, IMN, UMR 5293, Université de Bordeaux, F-33000 Bordeaux, France
| | - Bertrand Daignan-Fornier
- Institut de Biochimie et Génétique Cellulaires, CNRS, UMR 5095, Université de Bordeaux, F-33000 Bordeaux, France
| | - Karine Massé
- CNRS, IMN, UMR 5293, Université de Bordeaux, F-33000 Bordeaux, France
| | - Benoît Pinson
- Institut de Biochimie et Génétique Cellulaires, CNRS, UMR 5095, Université de Bordeaux, F-33000 Bordeaux, France
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11
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Ramey-Ward A, Dong Y, Yang J, Ogasawara H, Bremer-Sai EC, Brazhkina O, Franck C, Davis M, Salaita K. Optomechanically Actuated Hydrogel Platform for Cell Stimulation with Spatial and Temporal Resolution. ACS Biomater Sci Eng 2023; 9:5361-5375. [PMID: 37604774 PMCID: PMC10498418 DOI: 10.1021/acsbiomaterials.3c00516] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2023] [Accepted: 08/02/2023] [Indexed: 08/23/2023]
Abstract
Cells exist in the body in mechanically dynamic environments, yet the vast majority of in vitro cell culture is conducted on static materials such as plastic dishes and gels. To address this limitation, we report an approach to transition widely used hydrogels into mechanically active substrates by doping optomechanical actuator (OMA) nanoparticles within the polymer matrix. OMAs are composed of gold nanorods surrounded by a thermoresponsive polymer shell that rapidly collapses upon near-infrared (NIR) illumination. As a proof of concept, we crosslinked OMAs into laminin-gelatin hydrogels, generating up to 5 μm deformations triggered by NIR pulsing. This response was tunable by NIR intensity and OMA density within the gel and is generalizable to other hydrogel materials. Hydrogel mechanical stimulation enhanced myogenesis in C2C12 myoblasts as evidenced by ERK signaling, myocyte fusion, and sarcomeric myosin expression. We also demonstrate rescued differentiation in a chronic inflammation model as a result of mechanical stimulation. This work establishes OMA-actuated biomaterials as a powerful tool for in vitro mechanical manipulation with broad applications in the field of mechanobiology.
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Affiliation(s)
- Allison
N. Ramey-Ward
- Wallace
H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology & Emory University, Atlanta, Georgia 30322, United States
| | - Yixiao Dong
- Department
of Chemistry, Emory University, Atlanta, Georgia 30322, United States
| | - Jin Yang
- Department
of Mechanical Engineering, University of
Wisconsin − Madison, Madison, Wisconsin 53706, United States
| | - Hiroaki Ogasawara
- Department
of Chemistry, Emory University, Atlanta, Georgia 30322, United States
| | - Elizabeth C. Bremer-Sai
- Department
of Mechanical Engineering, University of
Wisconsin − Madison, Madison, Wisconsin 53706, United States
| | - Olga Brazhkina
- Wallace
H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology & Emory University, Atlanta, Georgia 30322, United States
| | - Christian Franck
- Department
of Mechanical Engineering, University of
Wisconsin − Madison, Madison, Wisconsin 53706, United States
| | - Michael Davis
- Wallace
H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology & Emory University, Atlanta, Georgia 30322, United States
| | - Khalid Salaita
- Wallace
H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology & Emory University, Atlanta, Georgia 30322, United States
- Department
of Chemistry, Emory University, Atlanta, Georgia 30322, United States
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12
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Xiang J, Qin L, Zhong J, Xia N, Liang Y. GLP-1RA Liraglutide and Semaglutide Improves Obesity-Induced Muscle Atrophy via SIRT1 Pathway. Diabetes Metab Syndr Obes 2023; 16:2433-2446. [PMID: 37602204 PMCID: PMC10439806 DOI: 10.2147/dmso.s425642] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/12/2023] [Accepted: 08/05/2023] [Indexed: 08/22/2023] Open
Abstract
Background Obesity is related to the loss of skeletal muscle mass and function (sarcopenia). The co-existence of obesity and sarcopenia is called sarcopenic obesity (SO). Glucagon like peptide-1 receptor agonists (GLP-1RA) are widely used in the treatment of diabetes and obesity. However, the protective effects of GLP-1RA on skeletal muscle in obesity and SO are not clear. This study investigated the effects of GLP-1RA liraglutide and semaglutide on obesity-induced muscle atrophy and explored the underlying mechanisms. Methods Thirty-six male C57BL/6J mice were randomly divided into two groups and fed a regular diet and a high-fat diet for 18 weeks, respectively. After establishing an obesity model, mice were further divided into six groups: control group, liraglutide (LIRA) group, semaglutide (SEMA) group, high-fat diet (HFD) group, HFD + LIRA group, HFD + SEMA group, and subcutaneous injection for 4 weeks. The body weight, muscle mass, muscle strength, glycolipid metabolism, muscle atrophy markers, myogenic differentiation markers, GLUT4 and SIRT1 were analyzed. C2C12 myotube cells treated with palmitic acid (PA) were divided into four groups: control group, PA group, PA + LIRA group, PA + SEMA group. The changes in glucose uptake, myotube diameter, lipid droplet infiltration, markers of muscle atrophy, myogenic differentiation markers, GLUT4 and SIRT1 were analyzed, and the changes in related indicators were observed after the addition of SIRT1 inhibitor EX527. Results Liraglutide and semaglutide reduced HFD-induced body weight gain, excessive lipid accumulation and improved muscle atrophy. Liraglutide and semaglutide eliminated the increase of muscle atrophy markers in skeletal muscle and C2C12 myotubes. Liraglutide and semaglutide restored impaired glucose tolerance and insulin resistance. However, these beneficial effects were attenuated by inhibiting SIRT1 expression. Conclusion Liraglutide and semaglutide protects skeletal muscle against obesity-induced muscle atrophy via the SIRT1 pathway.
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Affiliation(s)
- Jie Xiang
- Department of Clinical Nutrition, The First Affiliated Hospital of Guangxi Medical University, Nanning, People’s Republic of China
| | - Liyan Qin
- Department of Geriatric Endocrinology, The First Affiliated Hospital of Guangxi Medical University, Nanning, People’s Republic of China
| | - Jinling Zhong
- Department of Endocrinology, The Second Affiliated Hospital of Guangxi Medical University, Nanning, People’s Republic of China
| | - Ning Xia
- Department of Geriatric Endocrinology, The First Affiliated Hospital of Guangxi Medical University, Nanning, People’s Republic of China
| | - Yuzhen Liang
- Department of Endocrinology, The Second Affiliated Hospital of Guangxi Medical University, Nanning, People’s Republic of China
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13
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Sutcu HH, Montagne B, Ricchetti M. DNA-PKcs regulates myogenesis in an Akt-dependent manner independent of induced DNA damage. Cell Death Differ 2023; 30:1900-1915. [PMID: 37400716 PMCID: PMC10406879 DOI: 10.1038/s41418-023-01177-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2022] [Revised: 04/26/2023] [Accepted: 05/03/2023] [Indexed: 07/05/2023] Open
Abstract
Skeletal muscle regeneration relies on muscle stem (satellite) cells. We previously demonstrated that satellite cells efficiently and accurately repair radiation-induced DNA double-strand breaks (DSBs) via the DNA-dependent kinase DNA-PKcs. We show here that DNA-PKcs affects myogenesis independently of its role in DSB repair. Consequently, this process does not require the accumulation of DSBs and it is also independent of caspase-induced DNA damage. We report that in myogenic cells DNA-PKcs is essential for the expression of the differentiation factor Myogenin in an Akt2-dependent manner. DNA-PKcs interacts with the p300-containing complex that activates Myogenin transcription. We show also that SCID mice that are deficient in DNA-PKcs, and are used for transplantation and muscle regeneration studies, display altered myofiber composition and delayed myogenesis upon injury. These defects are exacerbated after repeated injury/regeneration events resulting in reduced muscle size. We thus identify a novel, caspase-independent, regulation of myogenic differentiation, and define a differentiation phase that does not involve the DNA damage/repair process.
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Affiliation(s)
- Haser Hasan Sutcu
- Institut Pasteur, Team Stability of Nuclear & Mitochondrial DNA, Department of Developmental and Stem Cell Biology, CNRS UMR3738, 75015, Paris, France
- Université Pierre et Marie Curie (Sorbonne Universities, ED515), Paris, France
- Institut de Radioprotection et de Sûrété Nucléaire (IRSN), Radiobiology of Accidental Exposure Laboratory (PSE-SANTE/SERAMED/LRAcc), B.P. 17, 92262 Fontenay-aux-Roses, Cedex, France
| | - Benjamin Montagne
- Institut Pasteur, Team Stability of Nuclear & Mitochondrial DNA, Department of Developmental and Stem Cell Biology, CNRS UMR3738, 75015, Paris, France
- Institut Pasteur, Molecular Mechanisms of Pathological and Physiological Ageing, Department of Developmental and Stem Cell Biology, Paris, France
| | - Miria Ricchetti
- Institut Pasteur, Team Stability of Nuclear & Mitochondrial DNA, Department of Developmental and Stem Cell Biology, CNRS UMR3738, 75015, Paris, France.
- Institut Pasteur, Molecular Mechanisms of Pathological and Physiological Ageing, Department of Developmental and Stem Cell Biology, Paris, France.
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14
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Pomella S, Danielli SG, Alaggio R, Breunis WB, Hamed E, Selfe J, Wachtel M, Walters ZS, Schäfer BW, Rota R, Shipley JM, Hettmer S. Genomic and Epigenetic Changes Drive Aberrant Skeletal Muscle Differentiation in Rhabdomyosarcoma. Cancers (Basel) 2023; 15:2823. [PMID: 37345159 DOI: 10.3390/cancers15102823] [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: 03/19/2023] [Revised: 05/14/2023] [Accepted: 05/16/2023] [Indexed: 06/23/2023] Open
Abstract
Rhabdomyosarcoma (RMS), the most common soft-tissue sarcoma in children and adolescents, represents an aberrant form of skeletal muscle differentiation. Both skeletal muscle development, as well as regeneration of adult skeletal muscle are governed by members of the myogenic family of regulatory transcription factors (MRFs), which are deployed in a highly controlled, multi-step, bidirectional process. Many aspects of this complex process are deregulated in RMS and contribute to tumorigenesis. Interconnected loops of super-enhancers, called core regulatory circuitries (CRCs), define aberrant muscle differentiation in RMS cells. The transcriptional regulation of MRF expression/activity takes a central role in the CRCs active in skeletal muscle and RMS. In PAX3::FOXO1 fusion-positive (PF+) RMS, CRCs maintain expression of the disease-driving fusion oncogene. Recent single-cell studies have revealed hierarchically organized subsets of cells within the RMS cell pool, which recapitulate developmental myogenesis and appear to drive malignancy. There is a large interest in exploiting the causes of aberrant muscle development in RMS to allow for terminal differentiation as a therapeutic strategy, for example, by interrupting MEK/ERK signaling or by interfering with the epigenetic machinery controlling CRCs. In this review, we provide an overview of the genetic and epigenetic framework of abnormal muscle differentiation in RMS, as it provides insights into fundamental mechanisms of RMS malignancy, its remarkable phenotypic diversity and, ultimately, opportunities for therapeutic intervention.
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Affiliation(s)
- Silvia Pomella
- Department of Hematology/Oncology, Cell and Gene Therapy, Bambino Gesù Children's Hospital, IRCCS Istituto Ospedale Pediatrico Bambino Gesu, Viale San Paolo 15, 00146 Rome, Italy
- Department of Clinical Sciences and Translational Medicine, University of Rome Tor Vergata, Via Montpellier 1, 00133 Rome, Italy
| | - Sara G Danielli
- Department of Oncology and Children's Research Center, University Children's Hospital of Zurich, 8032 Zürich, Switzerland
| | - Rita Alaggio
- Department of Pathology, Cell and Gene Therapy, Bambino Gesù Children's Hospital, IRCCS, Viale San Paolo 15, 00146 Rome, Italy
| | - Willemijn B Breunis
- Department of Oncology and Children's Research Center, University Children's Hospital of Zurich, 8032 Zürich, Switzerland
| | - Ebrahem Hamed
- Division of Pediatric Hematology and Oncology, Department of Pediatric and Adolescent Medicine, University Medical Center Freiburg, University of Freiburg, 79106 Freiburg, Germany
| | - Joanna Selfe
- Sarcoma Molecular Pathology Team, Divisions of Molecular Pathology and Cancer Therapeutics, The Institute of Cancer Research, London SM2 FNG, UK
| | - Marco Wachtel
- Department of Oncology and Children's Research Center, University Children's Hospital of Zurich, 8032 Zürich, Switzerland
| | - Zoe S Walters
- Translational Epigenomics Team, Cancer Sciences, Faculty of Medicine, University of Southampton, Southampton SO17 1BJ, UK
| | - Beat W Schäfer
- Department of Oncology and Children's Research Center, University Children's Hospital of Zurich, 8032 Zürich, Switzerland
| | - Rossella Rota
- Department of Hematology/Oncology, Cell and Gene Therapy, Bambino Gesù Children's Hospital, IRCCS Istituto Ospedale Pediatrico Bambino Gesu, Viale San Paolo 15, 00146 Rome, Italy
| | - Janet M Shipley
- Sarcoma Molecular Pathology Team, Divisions of Molecular Pathology and Cancer Therapeutics, The Institute of Cancer Research, London SM2 FNG, UK
| | - Simone Hettmer
- Division of Pediatric Hematology and Oncology, Department of Pediatric and Adolescent Medicine, University Medical Center Freiburg, University of Freiburg, 79106 Freiburg, Germany
- Spemann Graduate School of Biology and Medicine (SGBM), 79104 Freiburg, Germany
- Comprehensive Cancer Centre Freiburg (CCCF), University Medical Center Freiburg, 790106 Freiburg, Germany
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15
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Moustogiannis A, Philippou A, Zevolis E, Taso OS, Giannopoulos A, Chatzigeorgiou A, Koutsilieris M. Effect of Mechanical Loading of Senescent Myoblasts on Their Myogenic Lineage Progression and Survival. Cells 2022; 11:cells11243979. [PMID: 36552743 PMCID: PMC9776690 DOI: 10.3390/cells11243979] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2022] [Revised: 11/30/2022] [Accepted: 12/03/2022] [Indexed: 12/14/2022] Open
Abstract
BACKGROUND During aging, muscle cell apoptosis increases and myogenesis gradually declines. The impaired myogenic and survival potential of the aged skeletal muscle can be ameliorated by its mechanical loading. However, the molecular responses of aged muscle cells to mechanical loading remain unclear. This study examined the effect of mechanical loading of aged, proliferating, and differentiated myoblasts on the gene expression and signaling responses associated with their myogenic lineage progression and survival. METHODS Control and aged C2C12 cells were cultured on elastic membranes and underwent passive stretching for 12 h at a low frequency (0.25 Hz) and different elongations, varying the strain on days 0 and 10 of myoblast differentiation. Activation of ERK1/2 and Akt, and the expression of focal adhesion kinase (FAK) and key myogenic regulatory factors (MRFs), MyoD and Myogenin, were determined by immunoblotting of the cell lysates derived from stretched and non-stretched myoblasts. Changes in the expression levels of the MRFs, muscle growth, atrophy, and pro-apoptotic factors in response to mechanical loading of the aged and control cells were quantified by real-time qRT-PCR. RESULTS Mechanical stretching applied on myoblasts resulted in the upregulation of FAK both in proliferating (day 0) and differentiated (day 10) cells, as well as in increased phosphorylation of ERK1/2 in both control and aged cells. Moreover, Akt activation and the expression of early differentiation factor MyoD increased significantly after stretching only in the control myoblasts, while the late differentiation factor Myogenin was upregulated in both the control and aged myoblasts. At the transcriptional level, mechanical loading of the proliferating myoblasts led to an increased expression of IGF-1 isoforms and MRFs, and to downregulation of muscle atrophy factors mainly in control cells, as well as in the upregulation of pro-apoptotic factors both in control and aged cells. In differentiated cells, mechanical loading resulted in an increased expression of the IGF-1Ea isoform and Myogenin, and in the downregulation of atrophy and pro-apoptotic factors in both the control and aged cells. CONCLUSIONS This study revealed a diminished beneficial effect of mechanical loading on the myogenic and survival ability of the senescent muscle cells compared with the controls, with a low strain (2%) loading being most effective in upregulating myogenic/anabolic factors and downregulating atrophy and pro-apoptotic genes mainly in the aged myotubes.
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Affiliation(s)
- Athanasios Moustogiannis
- Department of Physiology, Medical School, National and Kapodistrian University of Athens, 75 Micras Asias, 115 27 Athens, Greece
| | - Anastassios Philippou
- Department of Physiology, Medical School, National and Kapodistrian University of Athens, 75 Micras Asias, 115 27 Athens, Greece
| | - Evangelos Zevolis
- Department of Physiology, Medical School, National and Kapodistrian University of Athens, 75 Micras Asias, 115 27 Athens, Greece
| | - Orjona S. Taso
- Department of Physiology, Medical School, National and Kapodistrian University of Athens, 75 Micras Asias, 115 27 Athens, Greece
- School of Biological Sciences, Deanery of Biomedical Sciences, Centre for Discovery Brain Sciences, Edinburgh EH8 9JZ, UK
| | - Antonios Giannopoulos
- Department of Surgical and Perioperative Sciences, Faculty of Medicine, Umeå University, 901 87 Umeå, Sweden
| | - Antonios Chatzigeorgiou
- Department of Physiology, Medical School, National and Kapodistrian University of Athens, 75 Micras Asias, 115 27 Athens, Greece
| | - Michael Koutsilieris
- Department of Physiology, Medical School, National and Kapodistrian University of Athens, 75 Micras Asias, 115 27 Athens, Greece
- Correspondence: ; Tel.: +30-210-7462690; Fax: +30-210-7462571
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16
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Welch N, Singh SS, Musich R, Mansuri MS, Bellar A, Mishra S, Chelluboyina AK, Sekar J, Attaway AH, Li L, Willard B, Hornberger TA, Dasarathy S. Shared and unique phosphoproteomics responses in skeletal muscle from exercise models and in hyperammonemic myotubes. iScience 2022; 25:105325. [PMID: 36345342 PMCID: PMC9636548 DOI: 10.1016/j.isci.2022.105325] [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: 04/18/2022] [Revised: 08/22/2022] [Accepted: 10/07/2022] [Indexed: 11/06/2022] Open
Abstract
Skeletal muscle generation of ammonia, an endogenous cytotoxin, is increased during exercise. Perturbations in ammonia metabolism consistently occur in chronic diseases, and may blunt beneficial skeletal muscle molecular responses and protein homeostasis with exercise. Phosphorylation of skeletal muscle proteins mediates cellular signaling responses to hyperammonemia and exercise. Comparative bioinformatics and machine learning-based analyses of published and experimentally derived phosphoproteomics data identified differentially expressed phosphoproteins that were unique and shared between hyperammonemic murine myotubes and skeletal muscle from exercise models. Enriched processes identified in both hyperammonemic myotubes and muscle from exercise models with selected experimental validation included protein kinase A (PKA), calcium signaling, mitogen-activated protein kinase (MAPK) signaling, and protein homeostasis. Our approach of feature extraction from comparative untargeted "omics" data allows for selection of preclinical models that recapitulate specific human exercise responses and potentially optimize functional capacity and skeletal muscle protein homeostasis with exercise in chronic diseases.
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Affiliation(s)
- Nicole Welch
- Department of Inflammation and Immunity, Cleveland Clinic, Cleveland, OH 44195, USA
- Department of Gastroenterology and Hepatology, Cleveland Clinic, Cleveland, OH 44195, USA
| | - Shashi Shekhar Singh
- Department of Inflammation and Immunity, Cleveland Clinic, Cleveland, OH 44195, USA
| | - Ryan Musich
- Department of Inflammation and Immunity, Cleveland Clinic, Cleveland, OH 44195, USA
| | - M. Shahid Mansuri
- Department of Molecular Biophysics and Biochemistry, Yale University, New Haven, CT 06520, USA
| | - Annette Bellar
- Department of Inflammation and Immunity, Cleveland Clinic, Cleveland, OH 44195, USA
| | - Saurabh Mishra
- Department of Inflammation and Immunity, Cleveland Clinic, Cleveland, OH 44195, USA
| | | | - Jinendiran Sekar
- Department of Inflammation and Immunity, Cleveland Clinic, Cleveland, OH 44195, USA
| | - Amy H. Attaway
- Department of Inflammation and Immunity, Cleveland Clinic, Cleveland, OH 44195, USA
| | - Ling Li
- Proteomics Core, Cleveland Clinic, Cleveland, OH 44195, USA
- Department of Comparative Biosciences, School of Veterinary Medicine, University of Wisconsin, Madison, WI 53706, USA
| | - Belinda Willard
- Proteomics Core, Cleveland Clinic, Cleveland, OH 44195, USA
- Department of Comparative Biosciences, School of Veterinary Medicine, University of Wisconsin, Madison, WI 53706, USA
| | - Troy A. Hornberger
- Department of Comparative Biosciences, School of Veterinary Medicine, University of Wisconsin, Madison, WI 53706, USA
| | - Srinivasan Dasarathy
- Department of Inflammation and Immunity, Cleveland Clinic, Cleveland, OH 44195, USA
- Department of Gastroenterology and Hepatology, Cleveland Clinic, Cleveland, OH 44195, USA
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17
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Mikšiūnas R, Labeit S, Bironaitė D. The Effect of Heat Shock on Myogenic Differentiation of Human Skeletal-Muscle-Derived Mesenchymal Stem/Stromal Cells. Cells 2022; 11:3209. [PMID: 36291076 PMCID: PMC9600296 DOI: 10.3390/cells11203209] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2022] [Revised: 10/05/2022] [Accepted: 10/07/2022] [Indexed: 12/18/2023] Open
Abstract
Muscle injuries, degenerative diseases and other lesions negatively affect functioning of human skeletomuscular system and thus quality of life. Therefore, the investigation of molecular mechanisms, stimulating myogenic differentiation of primary skeletal-muscle-derived mesenchymal stem/stromal cells (SM-MSCs), is actual and needed. The aim of the present study was to investigate the myogenic differentiation of CD56 (neural cell adhesion molecule, NCAM)-positive and -negative SM-MSCs and their response to the non-cytotoxic heat stimulus. The SM-MSCs were isolated from the post operation muscle tissue, sorted by flow cytometer according to the CD56 biomarker and morphology, surface profile, proliferation and myogenic differentiation has been investigated. Data show that CD56(+) cells were smaller in size, better proliferated and had significantly higher levels of CD146 (MCAM) and CD318 (CDCP1) compared with the CD56(-) cells. At control level, CD56(+) cells significantly more expressed myogenic differentiation markers MYOD1 and myogenin (MYOG) and better differentiated to the myogenic direction. The non-cytotoxic heat stimulus significantly stronger stimulated expression of myogenic markers in CD56(+) than in CD56(-) cells that correlated with the multinucleated cell formation. Data show that regenerative properties of CD56(+) SM-MSCs can be stimulated by an extracellular stimulus and be used as a promising skeletal muscle regenerating tool in vivo.
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Affiliation(s)
- Rokas Mikšiūnas
- Department of Regenerative Medicine, State Research Institute Centre for Innovative Medicine, Santariskiu 5, LT-08460 Vilnius, Lithuania
| | - Siegfried Labeit
- Medical Faculty Mannheim, University of Heidelberg, 68169 Mannheim, Germany
- Myomedix GmbH, 69151 Neckargemünd, Germany
| | - Daiva Bironaitė
- Department of Regenerative Medicine, State Research Institute Centre for Innovative Medicine, Santariskiu 5, LT-08460 Vilnius, Lithuania
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18
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Jones FK, Phillips A, Jones AR, Pisconti A. The INSR/AKT/mTOR pathway regulates the pace of myogenesis in a syndecan-3-dependent manner. Matrix Biol 2022; 113:61-82. [PMID: 36152781 DOI: 10.1016/j.matbio.2022.09.004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2022] [Revised: 09/08/2022] [Accepted: 09/19/2022] [Indexed: 11/25/2022]
Abstract
Muscle stem cells (MuSCs) are indispensable for muscle regeneration. A multitude of extracellular stimuli direct MuSC fate decisions from quiescent progenitors to differentiated myocytes. The activity of these signals is modulated by coreceptors such as syndecan-3 (SDC3). We investigated the global landscape of SDC3-mediated regulation of myogenesis using a phosphoproteomics approach which revealed, with the precision level of individual phosphosites, the large-scale extent of SDC3-mediated regulation of signal transduction in MuSCs. We then focused on INSR/AKT/mTOR as a key pathway regulated by SDC3 during myogenesis and mechanistically dissected SDC3-mediated inhibition of insulin receptor signaling in MuSCs. SDC3 interacts with INSR ultimately limiting signal transduction via AKT/mTOR. Both knockdown of INSR and inhibition of AKT rescue Sdc3-/- MuSC differentiation to wild type levels. Since SDC3 is rapidly downregulated at the onset of differentiation, our study suggests that SDC3 acts a timekeeper to restrain proliferating MuSC response and prevent premature differentiation.
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Affiliation(s)
- Fiona K Jones
- Department of Biochemistry and Cell Biology, Stony Brook University, Stony Brook, NY, USA
| | - Alexander Phillips
- School of Electrical Engineering, Electronics and Computer Science, University of Liverpool, Liverpool, UK
| | - Andrew R Jones
- Department of Biochemistry and Systems Biology, Institute of Systems, Molecular and Integrative Biology, University of Liverpool, Liverpool, UK
| | - Addolorata Pisconti
- Department of Biochemistry and Cell Biology, Stony Brook University, Stony Brook, NY, USA.
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19
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Codenotti S, Zizioli D, Mignani L, Rezzola S, Tabellini G, Parolini S, Giacomini A, Asperti M, Poli M, Mandracchia D, Vezzoli M, Bernardi S, Russo D, Mitola S, Monti E, Triggiani L, Tomasini D, Gastaldello S, Cassandri M, Rota R, Marampon F, Fanzani A. Hyperactive Akt1 Signaling Increases Tumor Progression and DNA Repair in Embryonal Rhabdomyosarcoma RD Line and Confers Susceptibility to Glycolysis and Mevalonate Pathway Inhibitors. Cells 2022; 11:cells11182859. [PMID: 36139434 PMCID: PMC9497225 DOI: 10.3390/cells11182859] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2022] [Revised: 09/06/2022] [Accepted: 09/09/2022] [Indexed: 11/18/2022] Open
Abstract
In pediatric rhabdomyosarcoma (RMS), elevated Akt signaling is associated with increased malignancy. Here, we report that expression of a constitutively active, myristoylated form of Akt1 (myrAkt1) in human RMS RD cells led to hyperactivation of the mammalian target of rapamycin (mTOR)/70-kDa ribosomal protein S6 kinase (p70S6K) pathway, resulting in the loss of both MyoD and myogenic capacity, and an increase of Ki67 expression due to high cell mitosis. MyrAkt1 signaling increased migratory and invasive cell traits, as detected by wound healing, zymography, and xenograft zebrafish assays, and promoted repair of DNA damage after radiotherapy and doxorubicin treatments, as revealed by nuclear detection of phosphorylated H2A histone family member X (γH2AX) through activation of DNA-dependent protein kinase (DNA-PK). Treatment with synthetic inhibitors of phosphatidylinositol-3-kinase (PI3K) and Akt was sufficient to completely revert the aggressive cell phenotype, while the mTOR inhibitor rapamycin failed to block cell dissemination. Furthermore, we found that pronounced Akt1 signaling increased the susceptibility to cell apoptosis after treatments with 2-deoxy-D-glucose (2-DG) and lovastatin, enzymatic inhibitors of hexokinase, and 3-hydroxy-3-methyl-glutaryl-coenzyme A reductase (HMGCR), especially in combination with radiotherapy and doxorubicin. In conclusion, these data suggest that restriction of glucose metabolism and the mevalonate pathway, in combination with standard therapy, may increase therapy success in RMS tumors characterized by a dysregulated Akt signaling.
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Affiliation(s)
- Silvia Codenotti
- Department of Molecular and Translational Medicine, University of Brescia, 25123 Brescia, Italy
| | - Daniela Zizioli
- Department of Molecular and Translational Medicine, University of Brescia, 25123 Brescia, Italy
| | - Luca Mignani
- Department of Molecular and Translational Medicine, University of Brescia, 25123 Brescia, Italy
| | - Sara Rezzola
- Department of Molecular and Translational Medicine, University of Brescia, 25123 Brescia, Italy
| | - Giovanna Tabellini
- Department of Molecular and Translational Medicine, University of Brescia, 25123 Brescia, Italy
| | - Silvia Parolini
- Department of Molecular and Translational Medicine, University of Brescia, 25123 Brescia, Italy
| | - Arianna Giacomini
- Department of Molecular and Translational Medicine, University of Brescia, 25123 Brescia, Italy
| | - Michela Asperti
- Department of Molecular and Translational Medicine, University of Brescia, 25123 Brescia, Italy
| | - Maura Poli
- Department of Molecular and Translational Medicine, University of Brescia, 25123 Brescia, Italy
| | - Delia Mandracchia
- Department of Molecular and Translational Medicine, University of Brescia, 25123 Brescia, Italy
| | - Marika Vezzoli
- Department of Molecular and Translational Medicine, University of Brescia, 25123 Brescia, Italy
| | - Simona Bernardi
- Department of Clinical and Experimental Sciences, ASST Spedali Civili di Brescia, University of Brescia, 25123 Brescia, Italy
| | - Domenico Russo
- Department of Clinical and Experimental Sciences, ASST Spedali Civili di Brescia, University of Brescia, 25123 Brescia, Italy
| | - Stefania Mitola
- Department of Molecular and Translational Medicine, University of Brescia, 25123 Brescia, Italy
| | - Eugenio Monti
- Department of Molecular and Translational Medicine, University of Brescia, 25123 Brescia, Italy
| | - Luca Triggiani
- Radiation Oncology Department, ASST Spedali Civili di Brescia, University of Brescia, 25123 Brescia, Italy
| | - Davide Tomasini
- Radiation Oncology Department, ASST Spedali Civili di Brescia, University of Brescia, 25123 Brescia, Italy
| | - Stefano Gastaldello
- Department of Physiology and Pharmacology, Karolinska Institutet, 17177 Stockholm, Sweden
- Precision Medicine Research Center, School of Pharmacy, Binzhou Medical University, Laishan District, Guanhai Road 346, Yantai 264003, China
| | - Matteo Cassandri
- Department of Hematology and Oncology, Cell and Gene Therapy, Bambino Gesù Children’s Hospital, IRCCS, 00165 Rome, Italy
- Department of Radiotherapy, Policlinico Umberto I, “Sapienza” University of Rome, 00161 Rome, Italy
| | - Rossella Rota
- Department of Hematology and Oncology, Cell and Gene Therapy, Bambino Gesù Children’s Hospital, IRCCS, 00165 Rome, Italy
| | - Francesco Marampon
- Department of Radiotherapy, Policlinico Umberto I, “Sapienza” University of Rome, 00161 Rome, Italy
| | - Alessandro Fanzani
- Department of Molecular and Translational Medicine, University of Brescia, 25123 Brescia, Italy
- Correspondence: ; Tel.: +39-030-3717567
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20
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Cai H, Wang Z, Tang W, Ke X, Zhao E. Recent advances of the mammalian target of rapamycin signaling in mesenchymal stem cells. Front Genet 2022; 13:970699. [PMID: 36110206 PMCID: PMC9468880 DOI: 10.3389/fgene.2022.970699] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2022] [Accepted: 08/11/2022] [Indexed: 11/22/2022] Open
Abstract
Mammalian target of rapamycin (mTOR) is a serine/threonine kinase involved in a variety of cellular functions, such as cell proliferation, metabolism, autophagy, survival and cytoskeletal organization. Furthermore, mTOR is made up of three multisubunit complexes, mTOR complex 1, mTOR complex 2, and putative mTOR complex 3. In recent years, increasing evidence has suggested that mTOR plays important roles in the differentiation and immune responses of mesenchymal stem cells (MSCs). In addition, mTOR is a vital regulator of pivotal cellular and physiological functions, such as cell metabolism, survival and ageing, where it has emerged as a novel therapeutic target for ageing-related diseases. Therefore, the mTOR signaling may develop a large impact on the treatment of ageing-related diseases with MSCs. In this review, we discuss prospects for future research in this field.
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Affiliation(s)
- Huarui Cai
- State Key Laboratory of Silkworm Genome Biology, College of Sericulture, Textile and Biomass Sciences, Southwest University, Chongqing, China
- Cancer Center, Medical Research Institute, Southwest University, Chongqing, China
| | - Zhongze Wang
- State Key Laboratory of Silkworm Genome Biology, College of Sericulture, Textile and Biomass Sciences, Southwest University, Chongqing, China
- Cancer Center, Medical Research Institute, Southwest University, Chongqing, China
| | - Wenhan Tang
- State Key Laboratory of Silkworm Genome Biology, College of Sericulture, Textile and Biomass Sciences, Southwest University, Chongqing, China
| | - Xiaoxue Ke
- State Key Laboratory of Silkworm Genome Biology, College of Sericulture, Textile and Biomass Sciences, Southwest University, Chongqing, China
- Cancer Center, Medical Research Institute, Southwest University, Chongqing, China
- *Correspondence: Xiaoxue Ke, ; Erhu Zhao,
| | - Erhu Zhao
- State Key Laboratory of Silkworm Genome Biology, College of Sericulture, Textile and Biomass Sciences, Southwest University, Chongqing, China
- Cancer Center, Medical Research Institute, Southwest University, Chongqing, China
- *Correspondence: Xiaoxue Ke, ; Erhu Zhao,
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21
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Vicente-García C, Hernández-Camacho JD, Carvajal JJ. Regulation of myogenic gene expression. Exp Cell Res 2022; 419:113299. [DOI: 10.1016/j.yexcr.2022.113299] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2022] [Revised: 07/19/2022] [Accepted: 07/25/2022] [Indexed: 12/22/2022]
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22
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Xiao D, Caldow M, Kim HJ, Blazev R, Koopman R, Manandi D, Parker BL, Yang P. Time-resolved Phosphoproteome and Proteome Analysis Reveals Kinase Signalling on Master Transcription Factors During Myogenesis. iScience 2022; 25:104489. [PMID: 35721465 PMCID: PMC9198430 DOI: 10.1016/j.isci.2022.104489] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2021] [Revised: 02/14/2022] [Accepted: 05/25/2022] [Indexed: 11/18/2022] Open
Abstract
Myogenesis is governed by signaling networks that are tightly regulated in a time-dependent manner. Although different protein kinases have been identified, knowledge of the global signaling networks and their downstream substrates during myogenesis remains incomplete. Here, we map the myogenic differentiation of C2C12 cells using phosphoproteomics and proteomics. From these data, we infer global kinase activity and predict the substrates that are involved in myogenesis. We found that multiple mitogen-activated protein kinases (MAPKs) mark the initial wave of signaling cascades. Further phosphoproteomic and proteomic profiling with MAPK1/3 and MAPK8/9 specific inhibitions unveil their shared and distinctive roles in myogenesis. Lastly, we identified and validated the transcription factor nuclear factor 1 X-type (NFIX) as a novel MAPK1/3 substrate and demonstrated the functional impact of NFIX phosphorylation on myogenesis. Altogether, these data characterize the dynamics, interactions, and downstream control of kinase signaling networks during myogenesis on a global scale. Phosphoproteomic and proteomic maps of myogenic differentiation of C2C12 cells Myogenic kinome activity and kinase-substrates prediction using machine learning MAPK1/3 and MAPK8/9 inhibition unveil shared and distinctive effects on myogenesis Validation of NFIX phosphorylation by MAPK1/3 and its impact on myogenesis
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Affiliation(s)
- Di Xiao
- Computational Systems Biology Group, Children’s Medical Research Institute, Faculty of Medicine and Health, The University of Sydney, Westmead, NSW 2145, Australia
- Charles Perkins Centre, School of Mathematics and Statistics, The University of Sydney, Sydney, NSW 2006, Australia
| | - Marissa Caldow
- Centre for Muscle Research, Department of Anatomy and Physiology, School of Biomedical Sciences, The University of Melbourne, Melbourne, VIC 3010, Australia
| | - Hani Jieun Kim
- Computational Systems Biology Group, Children’s Medical Research Institute, Faculty of Medicine and Health, The University of Sydney, Westmead, NSW 2145, Australia
- Charles Perkins Centre, School of Mathematics and Statistics, The University of Sydney, Sydney, NSW 2006, Australia
| | - Ronnie Blazev
- Centre for Muscle Research, Department of Anatomy and Physiology, School of Biomedical Sciences, The University of Melbourne, Melbourne, VIC 3010, Australia
| | - Rene Koopman
- Centre for Muscle Research, Department of Anatomy and Physiology, School of Biomedical Sciences, The University of Melbourne, Melbourne, VIC 3010, Australia
| | - Deborah Manandi
- Computational Systems Biology Group, Children’s Medical Research Institute, Faculty of Medicine and Health, The University of Sydney, Westmead, NSW 2145, Australia
| | - Benjamin L. Parker
- Centre for Muscle Research, Department of Anatomy and Physiology, School of Biomedical Sciences, The University of Melbourne, Melbourne, VIC 3010, Australia
- Corresponding author
| | - Pengyi Yang
- Computational Systems Biology Group, Children’s Medical Research Institute, Faculty of Medicine and Health, The University of Sydney, Westmead, NSW 2145, Australia
- Charles Perkins Centre, School of Mathematics and Statistics, The University of Sydney, Sydney, NSW 2006, Australia
- Corresponding author
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23
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Identification of Candidate Genes Regulating Carcass Depth and Hind Leg Circumference in Simmental Beef Cattle Using Illumina Bovine Beadchip and Next-Generation Sequencing Analyses. Animals (Basel) 2022; 12:ani12091103. [PMID: 35565529 PMCID: PMC9102740 DOI: 10.3390/ani12091103] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2022] [Revised: 04/14/2022] [Accepted: 04/21/2022] [Indexed: 12/27/2022] Open
Abstract
Genome-wide association studies are a robust means of identifying candidate genes that regulate economically important traits in farm animals. The aim of this study is to identify single-nucleotide polymorphisms (SNPs) and candidate genes potentially related to carcass depth and hind leg circumference in Simmental beef cattle. We performed Illumina Bovine HD Beadchip (~670 k SNPs) and next-generation sequencing (~12 million imputed SNPs) analyses of data from 1252 beef cattle, to which we applied a linear mixed model. Using a statistical threshold (p = 0.05/number of SNPs identified) and adopting a false discovery rate (FDR), we identified many putative SNPs on different bovine chromosomes. We identified 12 candidate genes potentially annotated with the markers identified, including CDKAL1 and E2F3, related to myogenesis and skeletal muscle development. The identification of such genes in Simmental beef cattle will help breeders to understand and improve related traits, such as meat yield.
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24
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Wang S, Zhao X, Liu Q, Wang Y, Li S, Xu S. Selenoprotein K protects skeletal muscle from damage and is required for satellite cells-mediated myogenic differentiation. Redox Biol 2022; 50:102255. [PMID: 35144051 PMCID: PMC8844831 DOI: 10.1016/j.redox.2022.102255] [Citation(s) in RCA: 44] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2021] [Revised: 01/23/2022] [Accepted: 01/28/2022] [Indexed: 12/11/2022] Open
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25
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Grimaldi A, Comai G, Mella S, Tajbakhsh S. Identification of bipotent progenitors that give rise to myogenic and connective tissues in mouse. eLife 2022; 11:70235. [PMID: 35225230 PMCID: PMC9020825 DOI: 10.7554/elife.70235] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2021] [Accepted: 02/25/2022] [Indexed: 11/19/2022] Open
Abstract
How distinct cell fates are manifested by direct lineage ancestry from bipotent progenitors, or by specification of individual cell types is a key question for understanding the emergence of tissues. The interplay between skeletal muscle progenitors and associated connective tissue cells provides a model for examining how muscle functional units are established. Most craniofacial structures originate from the vertebrate-specific neural crest cells except in the dorsal portion of the head, where they arise from cranial mesoderm. Here, using multiple lineage-tracing strategies combined with single cell RNAseq and in situ analyses, we identify bipotent progenitors expressing Myf5 (an upstream regulator of myogenic fate) that give rise to both muscle and juxtaposed connective tissue. Following this bifurcation, muscle and connective tissue cells retain complementary signalling features and maintain spatial proximity. Disrupting myogenic identity shifts muscle progenitors to a connective tissue fate. The emergence of Myf5-derived connective tissue is associated with the activity of several transcription factors, including Foxp2. Interestingly, this unexpected bifurcation in cell fate was not observed in craniofacial regions that are colonised by neural crest cells. Therefore, we propose that an ancestral bi-fated program gives rise to muscle and connective tissue cells in skeletal muscles that are deprived of neural crest cells.
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Affiliation(s)
| | - Glenda Comai
- UMR 3738, Department of Developmental and Stem Cell Biology, CNRS, Paris, France
| | - Sebastien Mella
- Cytometry and Biomarkers UTechS, Institut Pasteur, Paris, France
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26
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Mulligan MK, Kleiman JE, Caldemeyer AC, Harding JCS, Pasternak JA. Porcine reproductive and respiratory virus 2 infection of the fetus results in multi-organ cell cycle suppression. Vet Res 2022; 53:13. [PMID: 35189966 PMCID: PMC8860275 DOI: 10.1186/s13567-022-01030-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2021] [Accepted: 02/02/2022] [Indexed: 11/10/2022] Open
Abstract
AbstractPorcine reproductive and respiratory syndrome virus (PRRSV) infection during late gestation negatively affects fetal development. The objective of this study was to identify the fetal organs most severely impacted following infection, and evaluate the relationship between this response and fetal phenotypes. RNA was extracted from fetal heart, liver, lung, thymus, kidney, spleen, and loin muscle, collected following late gestation viral challenge of pregnant gilts. Initially, gene expression for three cell cycle promoters (CDK1, CDK2, CDK4) and one inhibitor (CDKN1A) were evaluated in biologically extreme phenotypic subsets including gestational age-matched controls (CON), uninfected (UNIF), high-viral load viable (HV-VIA), and high-viral load meconium-stained (HV-MEC) fetuses. There were no differences between CON and UNIF groups for any gene, indicating no impact of maternal infection alone. Relative to CON, high-viral load (HV-VIA, HV-MEC) fetuses showed significant downregulation of at least one CDK gene in all tissues except liver, while CDKN1A was upregulated in all tissues except muscle, with the heart and kidney most severely impacted. Subsequent evaluation of additional genes known to be upregulated following activation of P53 or TGFb/SMAD signaling cascades indicated neither pathway was responsible for the observed increase in CDKN1A. Finally, analysis of heart and kidney from a larger unselected population of infected fetuses from the same animal study showed that serum thyroxin and viral load were highly correlated with the expression of CDKN1A in both tissues. Collectively these results demonstrate the widespread suppression in cell division across all tissues in PRRSV infected fetuses and indicate a non-canonical regulatory mechanism.
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27
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Risha MA, Ali A, Siengdee P, Trakooljul N, Dannenberger D, Wimmers K, Ponsuksili S. Insights into molecular pathways and fatty acid membrane composition during the temperature stress response in the murine C2C12 cell model. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 807:151019. [PMID: 34662617 DOI: 10.1016/j.scitotenv.2021.151019] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/21/2021] [Revised: 10/11/2021] [Accepted: 10/12/2021] [Indexed: 06/13/2023]
Abstract
Daily and seasonal temperature fluctuations are inevitable due to climate change, which highlights the importance of studying the detrimental effects of temperature fluctuations on the health, productivity, and product quality of farm animals. Muscle membrane composition and the molecular signals are vital for muscle cell differentiation and muscle growth, but their response to temperature stress is not well characterized. Temperature changes can lead to modification of membrane components of the cell, which may affect its surroundings and intracellular signaling pathways. Using C2C12 myoblast cells as a model of skeletal muscle development, this study was designed to investigate the effects of high temperature (39 °C and 41 °C) and low temperature (35 °C) on molecular pathways in the cells as well as the cell membrane fatty acid composition. Our results show that several genes were differentially expressed in C2C12 cells cultured under heat or cold stress, and these genes were enriched important KEGG pathways including PI3K-Akt signaling pathway, lysosome and HIF- signaling pathway, Wnt signaling pathway and AMPK signaling pathway. Our analysis further reveals that several membrane transporters and genes involved in lipid metabolism and fatty acid elongation were also differentially expressed in C2C12 cells cultured under high or low temperature. Additionally, temperature stress shifts the fatty acid composition in the cell membranes, including the proportion of saturated, monounsaturated and polyunsaturated fatty acids. This study revealed an interference between fatty acid composition in the membranes and changing molecular pathways including lipid metabolism and fatty acids elongation mediated under thermal stress. These findings will reinforce a better understanding of the adaptive mechanisms in skeletal muscle under temperature stress.
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Affiliation(s)
- Marua Abu Risha
- Leibniz Institute for Farm Animal Biology (FBN), Institute of Genome Biology, Functional Genome Analysis Research Unit, Wilhelm-Stahl-Allee 2, D-18196 Dummerstorf, Germany
| | - Asghar Ali
- Leibniz Institute for Farm Animal Biology (FBN), Institute of Genome Biology, Functional Genome Analysis Research Unit, Wilhelm-Stahl-Allee 2, D-18196 Dummerstorf, Germany
| | - Puntita Siengdee
- Leibniz Institute for Farm Animal Biology (FBN), Institute of Genome Biology, Functional Genome Analysis Research Unit, Wilhelm-Stahl-Allee 2, D-18196 Dummerstorf, Germany
| | - Nares Trakooljul
- Leibniz Institute for Farm Animal Biology (FBN), Institute of Genome Biology, Genomics Research Unit, Wilhelm-Stahl-Allee 2, D-18196 Dummerstorf, Germany
| | - Dirk Dannenberger
- Leibniz Institute for Farm Animal Biology (FBN), Institute of Muscle Biology and Growth, Lipid metabolism and muscular adaptation workgroup, Wilhelm-Stahl-Allee 2, D-18196 Dummerstorf, Germany
| | - Klaus Wimmers
- Leibniz Institute for Farm Animal Biology (FBN), Institute of Genome Biology, Genomics Research Unit, Wilhelm-Stahl-Allee 2, D-18196 Dummerstorf, Germany; Faculty of Agricultural and Environmental Sciences, University Rostock, 18059 Rostock, Germany
| | - Siriluck Ponsuksili
- Leibniz Institute for Farm Animal Biology (FBN), Institute of Genome Biology, Functional Genome Analysis Research Unit, Wilhelm-Stahl-Allee 2, D-18196 Dummerstorf, Germany.
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28
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Tidyman WE, Goodwin AF, Maeda Y, Klein OD, Rauen KA. MEK-inhibitor-mediated rescue of skeletal myopathy caused by activating Hras mutation in a Costello syndrome mouse model. Dis Model Mech 2022; 15:272258. [PMID: 34553752 PMCID: PMC8617311 DOI: 10.1242/dmm.049166] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2021] [Accepted: 09/13/2021] [Indexed: 11/20/2022] Open
Abstract
Costello syndrome (CS) is a congenital disorder caused by heterozygous activating germline HRAS mutations in the canonical Ras/mitogen-activated protein kinase (Ras/MAPK) pathway. CS is one of the RASopathies, a large group of syndromes caused by mutations within various components of the Ras/MAPK pathway. An important part of the phenotype that greatly impacts quality of life is hypotonia. To gain a better understanding of the mechanisms underlying hypotonia in CS, a mouse model with an activating HrasG12V allele was utilized. We identified a skeletal myopathy that was due, in part, to inhibition of embryonic myogenesis and myofiber formation, resulting in a reduction in myofiber size and number that led to reduced muscle mass and strength. In addition to hyperactivation of the Ras/MAPK and PI3K/AKT pathways, there was a significant reduction in p38 signaling, as well as global transcriptional alterations consistent with the myopathic phenotype. Inhibition of Ras/MAPK pathway signaling using a MEK inhibitor rescued the HrasG12V myopathy phenotype both in vitro and in vivo, demonstrating that increased MAPK signaling is the main cause of the muscle phenotype in CS. Summary: A Costello syndrome (CS) mouse model carrying a heterozygous Hras p.G12V mutation was utilized to investigate Ras pathway dysregulation, revealing that increased MAPK signaling is the main cause of the muscle phenotype in CS.
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Affiliation(s)
- William E Tidyman
- Department of Pediatrics, University of California Davis, Sacramento, CA 95817, USA.,UC Davis MIND Institute, Sacramento, CA 95817, USA
| | - Alice F Goodwin
- Department of Orofacial Sciences and Program in Craniofacial Biology, University of California, San Francisco, CA 94143, USA
| | - Yoshiko Maeda
- Department of Pediatrics, University of California Davis, Sacramento, CA 95817, USA.,UC Davis MIND Institute, Sacramento, CA 95817, USA
| | - Ophir D Klein
- Department of Orofacial Sciences and Program in Craniofacial Biology, University of California, San Francisco, CA 94143, USA.,Department of Pediatrics and Institute for Human Genetics, University of California, San Francisco, CA 94143, USA
| | - Katherine A Rauen
- Department of Pediatrics, University of California Davis, Sacramento, CA 95817, USA.,UC Davis MIND Institute, Sacramento, CA 95817, USA
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29
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Bi J, Jing H, Zhou C, Gao P, Han F, Li G, Zhang S. Regulation of skeletal myogenesis in C2C12 cells through modulation of Pax7, MyoD, and myogenin via different low-frequency electromagnetic field energies. Technol Health Care 2022; 30:371-382. [PMID: 35124612 PMCID: PMC9028610 DOI: 10.3233/thc-thc228034] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
BACKGROUND: A low-frequency electromagnetic field (LF-EMF) exerts important biological effects on the human body. OBJECTIVE: We previously studied the immunity and atrophy of gastrocnemius muscles in rats with spinal cord injuries and found that LF-EMF with a magnetic flux density of 1.5 mT exerted excellent therapeutic and preventive effects on reducing myotubes and increasing spatium intermusculare. However, the effects of LF-EMF on all stages of skeletal myogenesis, such as activation, proliferation, differentiation, and fusion of satellite cells to myotubes as stimulated by myogenic regulatoryfactors (MRFs), have not been fully elucidated. METHODS: This study investigated the optimal LF-EMF magnetic flux density that exerted maximal effects on all stages of C2C12 cell skeletal myogenesis as well as its impact on regulatory MRFs. RESULTS: The results showed that an LF-EMF with a magnetic flux density of 2.0 mT could activate C2C12 cells and upregulate the proliferation-promoting transcription factor PAX7. On the other hand, 1.5 mT EMF could upregulate the expression of MyoD and myogenin. CONCLUSION: LF-EMF could prevent the disappearance of myotubes, with different magnetic flux densities of LF-EMF exerting independent and positive effects on skeletal myogenesis such as satellite cell activation and proliferation, muscle cell differentiation, and myocyte fusion.
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Affiliation(s)
- Jiaqi Bi
- Harbin Children’s Hospital, Harbin, Heilongjiang, China
- Emergency Department, SongBei Hospital of The Fourth Hospital Affiliated of Harbin Medical University, Harbin, Heilongjiang, China
- Harbin Children’s Hospital, Harbin, Heilongjiang, China
| | - Hong Jing
- Harbin Children’s Hospital, Harbin, Heilongjiang, China
- Harbin Children’s Hospital, Harbin, Heilongjiang, China
| | - ChenLiang Zhou
- Emergency Department, SongBei Hospital of The Fourth Hospital Affiliated of Harbin Medical University, Harbin, Heilongjiang, China
| | - Peng Gao
- The First Department of General Surgery, Harbin Children’s Hospital, Harbin, Heilongjiang, China
| | - Fujun Han
- Emergency Department, SongBei Hospital of The Fourth Hospital Affiliated of Harbin Medical University, Harbin, Heilongjiang, China
| | - Gang Li
- The Second Department of Orthopedics, The First Hospital of Yichun, Yichun, Heilongjiang, China
| | - Shiwei Zhang
- Harbin Children’s Hospital, Harbin, Heilongjiang, China
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30
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Eigler T, Zarfati G, Amzallag E, Sinha S, Segev N, Zabary Y, Zaritsky A, Shakked A, Umansky KB, Schejter ED, Millay DP, Tzahor E, Avinoam O. ERK1/2 inhibition promotes robust myotube growth via CaMKII activation resulting in myoblast-to-myotube fusion. Dev Cell 2021; 56:3349-3363.e6. [PMID: 34932950 PMCID: PMC8693863 DOI: 10.1016/j.devcel.2021.11.022] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2020] [Revised: 07/28/2021] [Accepted: 11/21/2021] [Indexed: 11/19/2022]
Abstract
Myoblast fusion is essential for muscle development and regeneration. Yet, it remains poorly understood how mononucleated myoblasts fuse with preexisting fibers. We demonstrate that ERK1/2 inhibition (ERKi) induces robust differentiation and fusion of primary mouse myoblasts through a linear pathway involving RXR, ryanodine receptors, and calcium-dependent activation of CaMKII in nascent myotubes. CaMKII activation results in myotube growth via fusion with mononucleated myoblasts at a fusogenic synapse. Mechanistically, CaMKII interacts with and regulates MYMK and Rac1, and CaMKIIδ/γ knockout mice exhibit smaller regenerated myofibers following injury. In addition, the expression of a dominant negative CaMKII inhibits the formation of large multinucleated myotubes. Finally, we demonstrate the evolutionary conservation of the pathway in chicken myoblasts. We conclude that ERK1/2 represses a signaling cascade leading to CaMKII-mediated fusion of myoblasts to myotubes, providing an attractive target for the cultivated meat industry and regenerative medicine.
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Affiliation(s)
- Tamar Eigler
- Department of Molecular Cell Biology, Weizmann Institute of Science, Rehovot, Israel
| | - Giulia Zarfati
- Department of Biomolecular Sciences, Weizmann Institute of Science, Rehovot, Israel
| | - Emmanuel Amzallag
- Department of Molecular Cell Biology, Weizmann Institute of Science, Rehovot, Israel
| | - Sansrity Sinha
- Department of Biomolecular Sciences, Weizmann Institute of Science, Rehovot, Israel
| | - Nadav Segev
- Department of Biomolecular Sciences, Weizmann Institute of Science, Rehovot, Israel
| | - Yishaia Zabary
- Department of Software & Information Systems Engineering, Ben Gurion University, Be'er Sheva, Israel
| | - Assaf Zaritsky
- Department of Software & Information Systems Engineering, Ben Gurion University, Be'er Sheva, Israel
| | - Avraham Shakked
- Department of Molecular Cell Biology, Weizmann Institute of Science, Rehovot, Israel
| | - Kfir-Baruch Umansky
- Department of Molecular Cell Biology, Weizmann Institute of Science, Rehovot, Israel
| | - Eyal D Schejter
- Department of Molecular Genetics, Weizmann Institute of Science, Rehovot, Israel
| | - Douglas P Millay
- Division of Molecular Cardiovascular Biology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA; Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH, USA
| | - Eldad Tzahor
- Department of Molecular Cell Biology, Weizmann Institute of Science, Rehovot, Israel.
| | - Ori Avinoam
- Department of Biomolecular Sciences, Weizmann Institute of Science, Rehovot, Israel.
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Cho HJ, Kim H, Lee YS, Moon SA, Kim JM, Kim H, Kim MJ, Yu J, Kim K, Baek IJ, Lee SH, Ahn KH, Kim S, Kang JS, Koh JM. SLIT3 promotes myogenic differentiation as a novel therapeutic factor against muscle loss. J Cachexia Sarcopenia Muscle 2021; 12:1724-1740. [PMID: 34423586 PMCID: PMC8718016 DOI: 10.1002/jcsm.12769] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/05/2021] [Revised: 06/25/2021] [Accepted: 07/10/2021] [Indexed: 11/06/2022] Open
Abstract
BACKGROUND Sarcopenia and osteoporosis frequently co-occur in the elderly and have common pathophysiological determinants. Slit guidance ligand 3 (SLIT3) has been recently discovered as a novel therapeutic factor against osteoporosis, and a SLIT3 fragment containing the second leucine-rich repeat domain (LRRD2) had a therapeutic efficacy against osteoporosis. However, a role of SLIT3 in the skeletal muscle is unknown. METHODS Skeletal muscle mass, strength, and/or physical activity were evaluated in Slit3-/- , ovariectomized, and aged mice, based on the measurements of muscle weight and grip strength, Kondziella's inverted hanging test, and/or wheel-running test. Skeletal muscles were also histologically evaluated by haematoxylin and eosin staining and/or immunofluorescence. The ovariectomized and aged mice were intravenously injected with recombinant SLIT3 LRRD2 for 4 weeks. C2C12 cells were used to know cellular effects of SLIT3, such as in vitro myogenesis, fusion, cell viability, and proliferation, and also used to evaluate its molecular mechanisms by immunocytochemistry, immunoprecipitation, western blotting, real-time PCR, siRNA transfection, and receptor-ligand binding ELISA. RESULTS Slit3-deficient mice exhibited decreased skeletal muscle mass, muscle strength, and physical activity. The relative masses of gastrocnemius and soleus were lower in the Slit3-/- mice (0.580 ± 0.039% and 0.033 ± 0.003%, respectively) than those in the WT littermates (0.622 ± 0.043% and 0.038 ± 0.003%, respectively) (all, P < 0.05). Gastrocnemius of Slit3-/- mice showed the reduced number of Type I and Type IIa fibres (all, P < 0.05), but not of Type IIb and Type IIx fibres. SLIT3 activated β-catenin signalling by promoting its release from M-cadherin, thereby increasing myogenin expression to stimulate myoblast differentiation. In vitro experiments involving ROBO2 expression, knockdown, and interaction with SLIT3 indicated that ROBO2 functions as a SLIT3 receptor to aid myoblast differentiation. SLIT3 LRRD2 dissociated M-cadherin-bound β-catenin and up-regulated myogenin expression to increase myoblast differentiation, in a manner similar to full-length SLIT3. Systemic treatment with SLIT3 LRRD2 increased skeletal muscle mass in both ovariectomized and aged mice (all, P < 0.05). The relative masses of gastrocnemius and soleus were higher in the treated aged mice (0.548 ± 0.045% and 0.033 ± 0.005%, respectively) than in the untreated aged mice (0.508 ± 0.016% and 0.028 ± 0.003%, respectively) (all, P < 0.05). SLIT3 LRRD2 treatment increased the hanging duration of the aged mice by approximately 1.7-fold (P < 0.05). CONCLUSIONS SLIT3 plays a sarcoprotective role by activating β-catenin signalling. SLIT3 LRRD2 can potentially be used as a therapeutic agent against muscle loss.
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Affiliation(s)
- Han Jin Cho
- Asan Institute for Life Sciences, Asan Medical Center, Seoul, South Korea
| | - Hyeonmok Kim
- Division of Endocrinology and Metabolism, Asan Medical Center, University of Ulsan College of Medicine, Seoul, South Korea
| | - Young-Sun Lee
- Asan Institute for Life Sciences, Asan Medical Center, Seoul, South Korea
| | - Sung Ah Moon
- Asan Institute for Life Sciences, Asan Medical Center, Seoul, South Korea
| | - Jin-Man Kim
- Asan Institute for Life Sciences, Asan Medical Center, Seoul, South Korea
| | - Hanjun Kim
- Asan Institute for Life Sciences, Asan Medical Center, Seoul, South Korea
| | - Min Ji Kim
- Asan Institute for Life Sciences, Asan Medical Center, Seoul, South Korea
| | - Jiyoung Yu
- Asan Institute for Life Sciences, Asan Medical Center, Seoul, South Korea
| | - Kyunggon Kim
- Asan Institute for Life Sciences, Asan Medical Center, Seoul, South Korea.,Department of Biomedical Sciences, University of Ulsan College of Medicine, Seoul, South Korea
| | - In-Jeoung Baek
- Asan Institute for Life Sciences, Asan Medical Center, Seoul, South Korea
| | - Seung Hun Lee
- Division of Endocrinology and Metabolism, Asan Medical Center, University of Ulsan College of Medicine, Seoul, South Korea
| | | | - Sungsub Kim
- Graduate School of New Drug Discovery and Development, Chungnam National University, Daejeon, South Korea
| | - Jong-Sun Kang
- Department of Molecular Cell Biology, Sungkyunkwan University School of Medicine, Suwon, South Korea
| | - Jung-Min Koh
- Division of Endocrinology and Metabolism, Asan Medical Center, University of Ulsan College of Medicine, Seoul, South Korea
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Todaka H, Arikawa M, Noguchi T, Ichikawa A, Sato T. Donepezil, an anti-Alzheimer's disease drug, promotes differentiation and regeneration in injured skeletal muscle through the elevation of the expression of myogenic regulatory factors. Eur J Pharmacol 2021; 911:174528. [PMID: 34582845 DOI: 10.1016/j.ejphar.2021.174528] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2021] [Revised: 09/18/2021] [Accepted: 09/23/2021] [Indexed: 10/20/2022]
Abstract
We previously demonstrated that donepezil, an anti-Alzheimer's disease drug, improved skeletal muscle atrophy by enhancing the angiogenesis of endothelial cells and activating the proliferation of satellite cells in a mouse model of peripheral arterial disease. However, the effect of donepezil on muscle differentiation during regeneration remains unclear. Therefore, we measured the expressions of myogenic regulatory factors and late muscle differentiation markers in donepezil-treated C2C12 myoblast cells before and after the induction of cell differentiation. The results indicate that the expressions of myogenin, troponin T (TnT) and myosin heavy chain (MyHC) were significantly increased and myotube formation was accelerated in donepezil-treated cells under the differentiation condition. However, the promotive effect of donepezil on muscle differentiation could not be reproduced by the addition of acetylcholine (ACh) and was not disrupted after treatment with ACh receptor blockers. Moreover, other kinds of acetylcholinesterase inhibitors failed to promote muscle differentiation in C2C12 cells. These results indicate that the specific characteristics of donepezil in the promotion of muscle differentiation are independent of its acetylcholinesterase-inhibitory action. We further found that donepezil induced an incremental shift of the cross-sectional area of myofibers and elevated the expressions of myogenin, TnT and MyHC in a mouse model of cardiotoxin injury. These results suggest that donepezil promotes the differentiation of muscle regeneration upon injury via the elevation of the expressions of myogenic regulatory factors and late muscle differentiation markers. Our findings suggest that donepezil can be a useful therapeutic agent for injured skeletal muscle treatment.
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Affiliation(s)
- Hiroshi Todaka
- Department of Cardiovascular Control, Kochi Medical School, Nankoku, Kochi, Japan.
| | - Mikihiko Arikawa
- Department of Biological Sciences, Faculty of Science and Technology, Kochi University, Akebono, Kochi, Japan
| | - Tatsuya Noguchi
- Department of Cardiology and Geriatrics, Kochi Medical School, Nankoku, Kochi, Japan
| | - Atsushi Ichikawa
- Department of Cardiovascular Control, Kochi Medical School, Nankoku, Kochi, Japan
| | - Takayuki Sato
- Department of Cardiovascular Control, Kochi Medical School, Nankoku, Kochi, Japan
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Cai X, Yang S, Peng Y, Huang Y, Chen H, Wu X. Screening of key genes during early embryonic development of Nile tilapia (Oreochromis niloticus). GENE REPORTS 2021. [DOI: 10.1016/j.genrep.2021.101262] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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34
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Coudert L, Osseni A, Gangloff YG, Schaeffer L, Leblanc P. The ESCRT-0 subcomplex component Hrs/Hgs is a master regulator of myogenesis via modulation of signaling and degradation pathways. BMC Biol 2021; 19:153. [PMID: 34330273 PMCID: PMC8323235 DOI: 10.1186/s12915-021-01091-4] [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: 02/09/2021] [Accepted: 07/09/2021] [Indexed: 11/30/2022] Open
Abstract
Background Myogenesis is a highly regulated process ending with the formation of myotubes, the precursors of skeletal muscle fibers. Differentiation of myoblasts into myotubes is controlled by myogenic regulatory factors (MRFs) that act as terminal effectors of signaling cascades involved in the temporal and spatial regulation of muscle development. Such signaling cascades converge and are controlled at the level of intracellular trafficking, but the mechanisms by which myogenesis is regulated by the endosomal machinery and trafficking is largely unexplored. The Endosomal Sorting Complex Required for Transport (ESCRT) machinery composed of four complexes ESCRT-0 to ESCRT-III regulates the biogenesis and trafficking of endosomes as well as the associated signaling and degradation pathways. Here, we investigate its role in regulating myogenesis. Results We uncovered a new function of the ESCRT-0 hepatocyte growth factor-regulated tyrosine kinase substrate Hrs/Hgs component in the regulation of myogenesis. Hrs depletion strongly impairs the differentiation of murine and human myoblasts. In the C2C12 murine myogenic cell line, inhibition of differentiation was attributed to impaired MRF in the early steps of differentiation. This alteration is associated with an upregulation of the MEK/ERK signaling pathway and a downregulation of the Akt2 signaling both leading to the inhibition of differentiation. The myogenic repressors FOXO1 as well as GSK3β were also found to be both activated when Hrs was absent. Inhibition of the MEK/ERK pathway or of GSK3β by the U0126 or azakenpaullone compounds respectively significantly restores the impaired differentiation observed in Hrs-depleted cells. In addition, functional autophagy that is required for myogenesis was also found to be strongly inhibited. Conclusions We show for the first time that Hrs/Hgs is a master regulator that modulates myogenesis at different levels through the control of trafficking, signaling, and degradation pathways. Supplementary Information The online version contains supplementary material available at 10.1186/s12915-021-01091-4.
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Affiliation(s)
- L Coudert
- Institut NeuroMyoGène, CNRS UMR5310, INSERM U1217, Faculté de Médecine Rockefeller, Université Claude Bernard Lyon, 8 avenue Rockefeller, 69373, 09, Lyon, Cedex, France
| | - A Osseni
- Institut NeuroMyoGène, CNRS UMR5310, INSERM U1217, Faculté de Médecine Rockefeller, Université Claude Bernard Lyon, 8 avenue Rockefeller, 69373, 09, Lyon, Cedex, France
| | - Y G Gangloff
- Institut NeuroMyoGène, CNRS UMR5310, INSERM U1217, Faculté de Médecine Rockefeller, Université Claude Bernard Lyon, 8 avenue Rockefeller, 69373, 09, Lyon, Cedex, France
| | - L Schaeffer
- Institut NeuroMyoGène, CNRS UMR5310, INSERM U1217, Faculté de Médecine Rockefeller, Université Claude Bernard Lyon, 8 avenue Rockefeller, 69373, 09, Lyon, Cedex, France
| | - P Leblanc
- Institut NeuroMyoGène, CNRS UMR5310, INSERM U1217, Faculté de Médecine Rockefeller, Université Claude Bernard Lyon, 8 avenue Rockefeller, 69373, 09, Lyon, Cedex, France.
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35
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Smith AL, Gjoka E, Izhar M, Novo KJ, Mason BC, De Las Casas A, Waddell DS. FGGY carbohydrate kinase domain containing is expressed and alternatively spliced in skeletal muscle and attenuates MAP kinase and Akt signaling. Gene 2021; 800:145836. [PMID: 34280510 DOI: 10.1016/j.gene.2021.145836] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2021] [Revised: 06/09/2021] [Accepted: 07/13/2021] [Indexed: 01/03/2023]
Abstract
Skeletal muscle atrophy can result from a range of physiological conditions, including denervation, immobilization, hindlimb unweighting, and aging. To better characterize the molecular genetic events of atrophy, a microarray analysis revealed that FGGY carbohydrate kinase domain containing (Fggy) is expressed in skeletal muscle and is induced in response to denervation. Bioinformatic analysis of the Fggy gene locus revealed two validated isoforms with alternative transcription initiation sites that we have designated Fggy-L-552 and Fggy-S-387. Additionally, we cloned two novel alternative splice variants, designated Fggy-L-482 and Fggy-S-344, from cultured muscle cells suggesting that at least four Fggy splice variants are expressed in skeletal muscle. Quantitative RT-PCR was performed using RNA isolated from muscle cells and primers designed to distinguish the four alternative Fggy transcripts and found that the Fggy-L transcripts are more highly expressed during myoblast differentiation, while the Fggy-S transcripts show relatively stable expression in proliferating myoblasts and differentiated myotubes. Confocal fluorescent microscopy revealed that the Fggy-L variants appear to localize evenly throughout the cytoplasm, while the Fggy-S variants produce a more punctuate cytoplasmic localization pattern in proliferating muscle cells. Finally, ectopic expression of Fggy-L-552 and Fggy-S-387 resulted in inhibition of muscle cell differentiation and attenuation of the MAP kinase and Akt signaling pathways. The identification and characterization of novel genes such as Fggy helps to improve our understanding of the molecular and cellular events that lead to atrophy and may eventually result in the identification of new therapeutic targets for the treatment of muscle wasting.
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Affiliation(s)
- Anastasia L Smith
- University of North Florida, Department of Biology, 1 UNF Drive, Jacksonville, FL 32224, USA
| | - Erisa Gjoka
- University of North Florida, Department of Biology, 1 UNF Drive, Jacksonville, FL 32224, USA
| | - Mahnoor Izhar
- University of North Florida, Department of Biology, 1 UNF Drive, Jacksonville, FL 32224, USA
| | - Karla J Novo
- University of North Florida, Department of Biology, 1 UNF Drive, Jacksonville, FL 32224, USA
| | - Brittany C Mason
- University of North Florida, Department of Biology, 1 UNF Drive, Jacksonville, FL 32224, USA
| | - Annabella De Las Casas
- University of North Florida, Department of Biology, 1 UNF Drive, Jacksonville, FL 32224, USA
| | - David S Waddell
- University of North Florida, Department of Biology, 1 UNF Drive, Jacksonville, FL 32224, USA.
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36
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Lin YA, Li YR, Chang YC, Hsu MC, Chen ST. Activation of IGF-1 pathway and suppression of atrophy related genes are involved in Epimedium extract (icariin) promoted C2C12 myotube hypertrophy. Sci Rep 2021; 11:10790. [PMID: 34031457 PMCID: PMC8144409 DOI: 10.1038/s41598-021-89039-0] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2020] [Accepted: 04/12/2021] [Indexed: 02/07/2023] Open
Abstract
The regenerative effect of Epimedium and its major bioactive flavonoid icariin (ICA) have been documented in traditional medicine, but their effect on sarcopenia has not been evaluated. The aim of this study was to investigate the effects of Epimedium extract (EE) on skeletal muscle as represented by differentiated C2C12 cells. Here we demonstrated that EE and ICA stimulated C2C12 myotube hypertrophy by activating several, including IGF-1 signal pathways. C2C12 myotube hypertrophy was demonstrated by enlarged myotube and increased myosin heavy chains (MyHCs). In similar to IGF-1, EE/ICA activated key components of the IGF-1 signal pathway, including IGF-1 receptor. Pre-treatment with IGF-1 signal pathway specific inhibitors such as picropodophyllin, LY294002, and rapamycin attenuated EE induced myotube hypertrophy and MyHC isoform overexpression. In a different way, EE induced MHyC-S overexpression can be blocked by AMPK, but not by mTOR inhibitor. On the level of transcription, EE suppressed myostatin and MRF4 expression, but did not suppress atrogenes MAFbx and MuRF1 like IGF-1 did. Differential regulation of MyHC isoform and atrogenes is probably due to inequivalent AKT and AMPK phosphorylation induced by EE and IGF-1. These findings suggest that EE/ICA stimulates pathways partially overlapping with IGF-1 signaling pathway to promote myotube hypertrophy.
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Affiliation(s)
- Yi-An Lin
- Department of Sports Medicine, Kaohsiung Medical University, Kaohsiung City, Taiwan.,Division of Endocrinology and Metabolism, Chang Gung Memorial Hospital, Chang Gung University, Taoyuan City, Taiwan.,Graduate Institute of Athletics and Coaching Science, National Taiwan Sport University, Taoyuan City, Taiwan
| | - Yan-Rong Li
- Division of Endocrinology and Metabolism, Chang Gung Memorial Hospital, Chang Gung University, Taoyuan City, Taiwan
| | - Yi-Ching Chang
- Division of Endocrinology and Metabolism, Chang Gung Memorial Hospital, Chang Gung University, Taoyuan City, Taiwan
| | - Mei-Chich Hsu
- Department of Sports Medicine, Kaohsiung Medical University, Kaohsiung City, Taiwan.
| | - Szu-Tah Chen
- Division of Endocrinology and Metabolism, Chang Gung Memorial Hospital, Chang Gung University, Taoyuan City, Taiwan.
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Katoku-Kikyo N, Paatela E, Houtz DL, Lee B, Munson D, Wang X, Hussein M, Bhatia J, Lim S, Yuan C, Asakura Y, Asakura A, Kikyo N. Per1/Per2-Igf2 axis-mediated circadian regulation of myogenic differentiation. J Cell Biol 2021; 220:212164. [PMID: 34009269 PMCID: PMC8138781 DOI: 10.1083/jcb.202101057] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2021] [Revised: 04/09/2021] [Accepted: 04/26/2021] [Indexed: 01/02/2023] Open
Abstract
Circadian rhythms regulate cell proliferation and differentiation, but circadian control of tissue regeneration remains elusive at the molecular level. Here, we show that proper myoblast differentiation and muscle regeneration are regulated by the circadian master regulators Per1 and Per2. Depletion of Per1 or Per2 suppressed myoblast differentiation in vitro and muscle regeneration in vivo, demonstrating their nonredundant functions. Both Per1 and Per2 were required for the activation of Igf2, an autocrine promoter of myoblast differentiation, accompanied by Per-dependent recruitment of RNA polymerase II, dynamic histone modifications at the Igf2 promoter and enhancer, and the promoter–enhancer interaction. This circadian epigenetic priming created a preferred time window for initiating myoblast differentiation. Consistently, muscle regeneration was faster if initiated at night, when Per1, Per2, and Igf2 were highly expressed compared with morning. This study reveals the circadian timing as a significant factor for effective muscle cell differentiation and regeneration.
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Affiliation(s)
- Nobuko Katoku-Kikyo
- Stem Cell Institute, University of Minnesota, Minneapolis, MN.,Department of Genetics, Cell Biology, and Development, University of Minnesota, Minneapolis, MN
| | - Ellen Paatela
- Stem Cell Institute, University of Minnesota, Minneapolis, MN.,Department of Genetics, Cell Biology, and Development, University of Minnesota, Minneapolis, MN
| | - Daniel L Houtz
- Stem Cell Institute, University of Minnesota, Minneapolis, MN
| | - Britney Lee
- Stem Cell Institute, University of Minnesota, Minneapolis, MN
| | - Dane Munson
- Stem Cell Institute, University of Minnesota, Minneapolis, MN
| | - Xuerui Wang
- Stem Cell Institute, University of Minnesota, Minneapolis, MN.,Paul & Sheila Wellstone Muscular Dystrophy Center, University of Minnesota, Minneapolis, MN.,Department of Neurology, University of Minnesota, Minneapolis, MN
| | - Mohammed Hussein
- Stem Cell Institute, University of Minnesota, Minneapolis, MN.,Paul & Sheila Wellstone Muscular Dystrophy Center, University of Minnesota, Minneapolis, MN.,Department of Neurology, University of Minnesota, Minneapolis, MN
| | - Jasmeet Bhatia
- Stem Cell Institute, University of Minnesota, Minneapolis, MN.,Paul & Sheila Wellstone Muscular Dystrophy Center, University of Minnesota, Minneapolis, MN.,Department of Neurology, University of Minnesota, Minneapolis, MN
| | - Seunghyun Lim
- Stem Cell Institute, University of Minnesota, Minneapolis, MN.,Bioinformatics and Computational Biology Graduate Program, University of Minnesota, Minneapolis, MN
| | - Ce Yuan
- Stem Cell Institute, University of Minnesota, Minneapolis, MN.,Bioinformatics and Computational Biology Graduate Program, University of Minnesota, Minneapolis, MN
| | - Yoko Asakura
- Stem Cell Institute, University of Minnesota, Minneapolis, MN.,Paul & Sheila Wellstone Muscular Dystrophy Center, University of Minnesota, Minneapolis, MN.,Department of Neurology, University of Minnesota, Minneapolis, MN
| | - Atsushi Asakura
- Stem Cell Institute, University of Minnesota, Minneapolis, MN.,Paul & Sheila Wellstone Muscular Dystrophy Center, University of Minnesota, Minneapolis, MN.,Department of Neurology, University of Minnesota, Minneapolis, MN
| | - Nobuaki Kikyo
- Stem Cell Institute, University of Minnesota, Minneapolis, MN.,Department of Genetics, Cell Biology, and Development, University of Minnesota, Minneapolis, MN
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Contreras O, Córdova-Casanova A, Brandan E. PDGF-PDGFR network differentially regulates the fate, migration, proliferation, and cell cycle progression of myogenic cells. Cell Signal 2021; 84:110036. [PMID: 33971280 DOI: 10.1016/j.cellsig.2021.110036] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2021] [Revised: 05/04/2021] [Accepted: 05/05/2021] [Indexed: 12/22/2022]
Abstract
Platelet-derived growth factors (PDGFs) regulate embryonic development, tissue regeneration, and wound healing through their binding to PDGF receptors, PDGFRα and PDGFRβ. However, the role of PDGF signaling in regulating muscle development and regeneration remains elusive, and the cellular and molecular responses of myogenic cells are understudied. Here, we explore the PDGF-PDGFR gene expression changes and their involvement in skeletal muscle myogenesis and myogenic fate. By surveying bulk RNA sequencing and single-cell profiling data of skeletal muscle stem cells, we show that myogenic progenitors and muscle stem cells differentially express PDGF ligands and PDGF receptors during myogenesis. Quiescent adult muscle stem cells and myoblasts preferentially express PDGFRβ over PDGFRα. Remarkably, cell culture- and injury-induced muscle stem cell activation altered PDGF family gene expression. In myoblasts, PDGF-AB and PDGF-BB treatments activate two pro-chemotactic and pro-mitogenic downstream transducers, RAS-ERK1/2 and PI3K-AKT. PDGFRs inhibitor AG1296 inhibited ERK1/2 and AKT activation, myoblast migration, proliferation, and cell cycle progression induced by PDGF-AB and PDGF-BB. We also found that AG1296 causes myoblast G0/G1 cell cycle arrest. Remarkably, PDGF-AA did not promote a noticeable ERK1/2 or AKT activation, myoblast migration, or expansion. Also, myogenic differentiation reduced the expression of both PDGFRα and PDGFRβ, whereas forced PDGFRα expression impaired myogenesis. Thus, our data highlight PDGF signaling pathway to stimulate satellite cell proliferation aiming to enhance skeletal muscle regeneration and provide a deeper understanding of the role of PDGF signaling in non-fibroblastic cells.
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Affiliation(s)
- Osvaldo Contreras
- Developmental and Stem Cell Biology Division, Victor Chang Cardiac Research Institute, Darlinghurst, NSW 2010, Australia; St. Vincent's Clinical School, Faculty of Medicine, UNSW Sydney, Kensington 2052, Australia; Departamento de Biología Celular y Molecular and Center for Aging and Regeneration (CARE-ChileUC), Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, 8331150 Santiago, Chile.
| | - Adriana Córdova-Casanova
- Departamento de Biología Celular y Molecular and Center for Aging and Regeneration (CARE-ChileUC), Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, 8331150 Santiago, Chile
| | - Enrique Brandan
- Departamento de Biología Celular y Molecular and Center for Aging and Regeneration (CARE-ChileUC), Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, 8331150 Santiago, Chile; Fundación Ciencia & Vida, 7780272 Santiago, Chile
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39
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Key Genes Regulating Skeletal Muscle Development and Growth in Farm Animals. Animals (Basel) 2021; 11:ani11030835. [PMID: 33809500 PMCID: PMC7999090 DOI: 10.3390/ani11030835] [Citation(s) in RCA: 102] [Impact Index Per Article: 34.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2021] [Revised: 03/08/2021] [Accepted: 03/12/2021] [Indexed: 12/14/2022] Open
Abstract
Simple Summary Skeletal muscle mass is an important economic trait, and muscle development and growth is a crucial factor to supply enough meat for human consumption. Thus, understanding (candidate) genes regulating skeletal muscle development is crucial for understanding molecular genetic regulation of muscle growth and can be benefit the meat industry toward the goal of increasing meat yields. During the past years, significant progress has been made for understanding these mechanisms, and thus, we decided to write a comprehensive review covering regulators and (candidate) genes crucial for muscle development and growth in farm animals. Detection of these genes and factors increases our understanding of muscle growth and development and is a great help for breeders to satisfy demands for meat production on a global scale. Abstract Farm-animal species play crucial roles in satisfying demands for meat on a global scale, and they are genetically being developed to enhance the efficiency of meat production. In particular, one of the important breeders’ aims is to increase skeletal muscle growth in farm animals. The enhancement of muscle development and growth is crucial to meet consumers’ demands regarding meat quality. Fetal skeletal muscle development involves myogenesis (with myoblast proliferation, differentiation, and fusion), fibrogenesis, and adipogenesis. Typically, myogenesis is regulated by a convoluted network of intrinsic and extrinsic factors monitored by myogenic regulatory factor genes in two or three phases, as well as genes that code for kinases. Marker-assisted selection relies on candidate genes related positively or negatively to muscle development and can be a strong supplement to classical selection strategies in farm animals. This comprehensive review covers important (candidate) genes that regulate muscle development and growth in farm animals (cattle, sheep, chicken, and pig). The identification of these genes is an important step toward the goal of increasing meat yields and improves meat quality.
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40
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Maeda Y, Tidyman WE, Ander BP, Pritchard CA, Rauen KA. Ras/MAPK dysregulation in development causes a skeletal myopathy in an activating Braf L597V mouse model for cardio-facio-cutaneous syndrome. Dev Dyn 2021; 250:1074-1095. [PMID: 33522658 DOI: 10.1002/dvdy.309] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2020] [Revised: 01/03/2021] [Accepted: 01/19/2021] [Indexed: 12/31/2022] Open
Abstract
BACKGROUND Cardio-facio-cutaneous (CFC) syndrome is a human multiple congenital anomaly syndrome that is caused by activating heterozygous mutations in either BRAF, MEK1, or MEK2, three protein kinases of the Ras/mitogen-activated protein kinase (MAPK) pathway. CFC belongs to a group of syndromes known as RASopathies. Skeletal muscle hypotonia is a ubiquitous phenotype of RASopathies, especially in CFC syndrome. To better understand the underlying mechanisms for the skeletal myopathy in CFC, a mouse model with an activating BrafL597V allele was utilized. RESULTS The activating BrafL597V allele resulted in phenotypic alterations in skeletal muscle characterized by a reduction in fiber size which leads to a reduction in muscle size which are functionally weaker. MAPK pathway activation caused inhibition of myofiber differentiation during embryonic myogenesis and global transcriptional dysregulation of developmental pathways. Inhibition in differentiation can be rescued by MEK inhibition. CONCLUSIONS A skeletal myopathy was identified in the CFC BrafL597V mouse validating the use of models to study the effect of Ras/MAPK dysregulation on skeletal myogenesis. RASopathies present a novel opportunity to identify new paradigms of myogenesis and further our understanding of Ras in development. Rescue of the phenotype by inhibitors may help advance the development of therapeutic options for RASopathy patients.
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Affiliation(s)
- Yoshiko Maeda
- Department of Pediatrics, University of California Davis, Sacramento, California, USA.,UC Davis MIND Institute, Sacramento, California, USA
| | - William E Tidyman
- Department of Pediatrics, University of California Davis, Sacramento, California, USA.,UC Davis MIND Institute, Sacramento, California, USA
| | - Bradley P Ander
- UC Davis MIND Institute, Sacramento, California, USA.,Department of Neurology, University of California Davis, Sacramento, California, USA
| | - Catrin A Pritchard
- Leicester Cancer Research Centre, University of Leicester, Leicester, United Kingdom
| | - Katherine A Rauen
- Department of Pediatrics, University of California Davis, Sacramento, California, USA.,UC Davis MIND Institute, Sacramento, California, USA
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PUFA Treatment Affects C2C12 Myocyte Differentiation, Myogenesis Related Genes and Energy Metabolism. Genes (Basel) 2021; 12:genes12020192. [PMID: 33525599 PMCID: PMC7910949 DOI: 10.3390/genes12020192] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2020] [Revised: 01/19/2021] [Accepted: 01/26/2021] [Indexed: 11/16/2022] Open
Abstract
Polyunsaturated fatty acids (PUFAs) are the main components of cell membrane affecting its fluidity, signaling processes and play a vital role in muscle cell development. The effects of docosahexaenoic acid (DHA) on myogenesis are well known, while the effects of arachidonic acid (AA) are largely unclear. The purpose of this study is to evaluate the effect of two PUFAs (DHA and AA) on cell fate during myogenic processes, Wnt signaling and energy metabolism by using the C2C12 cells. The cells were treated with different concentrations of AA or DHA for 48 h during the differentiation period. PUFA treatment increased mRNA level of myogenic factor 5 (Myf5), which is involved in early stage of myoblast proliferation. Additionally, PUFA treatment prevented myoblast differentiation, indicated by decreased myotube fusion index and differentiation index in parallel with reduced mRNA levels of myogenin (MyoG). After PUFA withdrawal, some changes in cell morphology and myosin heavy chain mRNA levels were still observed. Expression of genes associated with Wnt signaling pathway, and energy metabolism changed in PUFA treatment in a dose and time dependent manner. Our data suggests that PUFAs affect the transition of C2C12 cells from proliferation to differentiation phase by prolonging proliferation and preventing differentiation.
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Yang Y, Zhu X, Jia X, Hou W, Zhou G, Ma Z, Yu B, Pi Y, Zhang X, Wang J, Wang G. Phosphorylation of Msx1 promotes cell proliferation through the Fgf9/18-MAPK signaling pathway during embryonic limb development. Nucleic Acids Res 2020; 48:11452-11467. [PMID: 33080014 PMCID: PMC7672426 DOI: 10.1093/nar/gkaa905] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2020] [Revised: 09/26/2020] [Accepted: 10/08/2020] [Indexed: 11/25/2022] Open
Abstract
Msh homeobox (Msx) is a subclass of homeobox transcriptional regulators that control cell lineage development, including the early stage of vertebrate limb development, although the underlying mechanisms are not clear. Here, we demonstrate that Msx1 promotes the proliferation of myoblasts and mesenchymal stem cells (MSCs) by enhancing mitogen-activated protein kinase (MAPK) signaling. Msx1 directly binds to and upregulates the expression of fibroblast growth factor 9 (Fgf9) and Fgf18. Accordingly, knockdown or antibody neutralization of Fgf9/18 inhibits Msx1-activated extracellular signal-regulated kinase 1/2 (Erk1/2) phosphorylation. Mechanistically, we determined that the phosphorylation of Msx1 at Ser136 is critical for enhancing Fgf9 and Fgf18 expression and cell proliferation, and cyclin-dependent kinase 1 (CDK1) is apparently responsible for Ser136 phosphorylation. Furthermore, mesenchymal deletion of Msx1/2 results in decreased Fgf9 and Fgf18 expression and Erk1/2 phosphorylation, which leads to serious defects in limb development in mice. Collectively, our findings established an important function of the Msx1-Fgf-MAPK signaling axis in promoting cell proliferation, thus providing a new mechanistic insight into limb development.
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Affiliation(s)
- Yenan Yang
- State Key Laboratory of Genetic Engineering, School of Life Sciences and Zhongshan Hospital, Fudan University, Shanghai 200438, China
| | - Xiaoli Zhu
- The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Anhui 230001, China
| | - Xiang Jia
- State Key Laboratory of Genetic Engineering, School of Life Sciences and Zhongshan Hospital, Fudan University, Shanghai 200438, China
| | - Wanwan Hou
- State Key Laboratory of Genetic Engineering, School of Life Sciences and Zhongshan Hospital, Fudan University, Shanghai 200438, China
| | - Guoqiang Zhou
- State Key Laboratory of Genetic Engineering, School of Life Sciences and Zhongshan Hospital, Fudan University, Shanghai 200438, China
| | - Zhangjing Ma
- State Key Laboratory of Genetic Engineering, School of Life Sciences and Zhongshan Hospital, Fudan University, Shanghai 200438, China
| | - Bin Yu
- State Key Laboratory of Genetic Engineering, School of Life Sciences and Zhongshan Hospital, Fudan University, Shanghai 200438, China
| | - Yan Pi
- State Key Laboratory of Genetic Engineering, School of Life Sciences and Zhongshan Hospital, Fudan University, Shanghai 200438, China
| | - Xumin Zhang
- State Key Laboratory of Genetic Engineering, School of Life Sciences and Zhongshan Hospital, Fudan University, Shanghai 200438, China
| | - Jingqiang Wang
- State Key Laboratory of Genetic Engineering, School of Life Sciences and Zhongshan Hospital, Fudan University, Shanghai 200438, China
| | - Gang Wang
- State Key Laboratory of Genetic Engineering, School of Life Sciences and Zhongshan Hospital, Fudan University, Shanghai 200438, China
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LRTM1 promotes the differentiation of myoblast cells by negatively regulating the FGFR1 signaling pathway. Exp Cell Res 2020; 396:112237. [PMID: 32841643 DOI: 10.1016/j.yexcr.2020.112237] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2020] [Revised: 07/28/2020] [Accepted: 08/13/2020] [Indexed: 11/23/2022]
Abstract
The proliferation and differentiation of myoblast cells are regulated by the fibroblast growth factor receptor (FGFR) signaling pathway. Although the regulation of FGFR signaling cascades has been widely investigated, the inhibitory mechanism that particularly function in skeletal muscle myogenesis remains obscure. In this study, we determined that LRTM1, an inhibitory regulator of the FGFR signaling pathway, negatively modulates the activation of ERK and promotes the differentiation of myoblast cells. LRTM1 is dynamically expressed during myoblast differentiation and skeletal muscle regeneration after injury. In mouse myoblast C2C12 cells, knockout (KO) of Lrtm1 significantly prevents the differentiation of myoblast cells; this effect is associated with the reduction of MyoD transcriptional activity and the overactivation of ERK kinase. Notably, further studies demonstrated that LRTM1 associates with p52Shc and inhibits the recruitment of p52Shc to FGFR1. Taken together, our findings identify a novel negative regulator of FGFR1, which plays an important role in regulating the differentiation of myoblast cells.
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Zluhan-Martínez E, Pérez-Koldenkova V, Ponce-Castañeda MV, Sánchez MDLP, García-Ponce B, Miguel-Hernández S, Álvarez-Buylla ER, Garay-Arroyo A. Beyond What Your Retina Can See: Similarities of Retinoblastoma Function between Plants and Animals, from Developmental Processes to Epigenetic Regulation. Int J Mol Sci 2020; 21:E4925. [PMID: 32664691 PMCID: PMC7404004 DOI: 10.3390/ijms21144925] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2020] [Revised: 06/29/2020] [Accepted: 07/07/2020] [Indexed: 12/15/2022] Open
Abstract
The Retinoblastoma protein (pRb) is a key cell cycle regulator conserved in a wide variety of organisms. Experimental analysis of pRb's functions in animals and plants has revealed that this protein participates in cell proliferation and differentiation processes. In addition, pRb in animals and its orthologs in plants (RBR), are part of highly conserved protein complexes which suggest the possibility that analogies exist not only between functions carried out by pRb orthologs themselves, but also in the structure and roles of the protein networks where these proteins are involved. Here, we present examples of pRb/RBR participation in cell cycle control, cell differentiation, and in the regulation of epigenetic changes and chromatin remodeling machinery, highlighting the similarities that exist between the composition of such networks in plants and animals.
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Affiliation(s)
- Estephania Zluhan-Martínez
- Laboratorio de Genética Molecular, Epigenética, Desarrollo y Evolución de Plantas, Instituto de Ecología, Universidad Nacional Autónoma de Mexico, 3er Circuito Ext. Junto a J. Botánico, Ciudad Universitaria, UNAM 04510, Mexico; (E.Z.-M.); (M.d.l.P.S.); (B.G.-P.)
- Posgrado en Ciencias Biomédicas, Universidad Nacional Autónoma de México, Av. Universidad 3000, Coyoacán 04510, Mexico
| | - Vadim Pérez-Koldenkova
- Laboratorio Nacional de Microscopía Avanzada, Centro Médico Nacional Siglo XXI, Instituto Mexicano del Seguro Social, Av. Cuauhtémoc, 330. Col. Doctores, Alc. Cuauhtémoc 06720, Mexico;
| | - Martha Verónica Ponce-Castañeda
- Unidad de Investigación Médica en Enfermedades Infecciosas, Centro Médico Nacional SXXI, Instituto Mexicano del Seguro Social, Mexico City 06720, Mexico;
| | - María de la Paz Sánchez
- Laboratorio de Genética Molecular, Epigenética, Desarrollo y Evolución de Plantas, Instituto de Ecología, Universidad Nacional Autónoma de Mexico, 3er Circuito Ext. Junto a J. Botánico, Ciudad Universitaria, UNAM 04510, Mexico; (E.Z.-M.); (M.d.l.P.S.); (B.G.-P.)
| | - Berenice García-Ponce
- Laboratorio de Genética Molecular, Epigenética, Desarrollo y Evolución de Plantas, Instituto de Ecología, Universidad Nacional Autónoma de Mexico, 3er Circuito Ext. Junto a J. Botánico, Ciudad Universitaria, UNAM 04510, Mexico; (E.Z.-M.); (M.d.l.P.S.); (B.G.-P.)
| | - Sergio Miguel-Hernández
- Laboratorio de Citopatología Ambiental, Departamento de Morfología, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Campus Zacatenco, Calle Wilfrido Massieu Esquina Cda, Manuel Stampa 07738, Mexico;
| | - Elena R. Álvarez-Buylla
- Laboratorio de Genética Molecular, Epigenética, Desarrollo y Evolución de Plantas, Instituto de Ecología, Universidad Nacional Autónoma de Mexico, 3er Circuito Ext. Junto a J. Botánico, Ciudad Universitaria, UNAM 04510, Mexico; (E.Z.-M.); (M.d.l.P.S.); (B.G.-P.)
| | - Adriana Garay-Arroyo
- Laboratorio de Genética Molecular, Epigenética, Desarrollo y Evolución de Plantas, Instituto de Ecología, Universidad Nacional Autónoma de Mexico, 3er Circuito Ext. Junto a J. Botánico, Ciudad Universitaria, UNAM 04510, Mexico; (E.Z.-M.); (M.d.l.P.S.); (B.G.-P.)
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Yin Yang 1 is required for PHD finger protein 20-mediated myogenic differentiation in vitro and in vivo. Cell Death Differ 2020; 27:3321-3336. [PMID: 32555448 DOI: 10.1038/s41418-020-0580-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2019] [Revised: 06/09/2020] [Accepted: 06/10/2020] [Indexed: 11/08/2022] Open
Abstract
The development of skeletal muscle requires progression of a highly ordered cascade of events comprising myogenic lineage commitment, myoblast proliferation, and terminal differentiation. The process of myogenesis is controlled by several myogenic transcription factors that act as terminal effectors of signaling cascades and produce appropriate developmental stage-specific transcripts. PHD finger protein 20 (PHF20) is a multidomain protein and subunit of a lysine acetyltransferase complex that acetylates histone H4 and p53, but its function is unclear. Notably, it has been reported that PHF20 knockout mice die shortly after birth and display a wide variety of phenotypes within the skeletal and hematopoietic systems. Therefore, the putative role of PHF20 in myogenic differentiation was further investigated. In the present study, we found that protein and mRNA expression levels of PHF20 were decreased during myogenic differentiation in C2C12 cells. At the same time, Yin Yang 1 (YY1) was also decreased during myogenic differentiation. PHF20 overexpression increased YY1 expression during myogenic differentiation, together with a delay in MyoD expression. PHF20 expression enhanced the transcriptional activity of YY1 while shRNA-mediated depletion of PHF20 resulted in the reduction of YY1 promoter activity in C2C12 cells. In addition, PHF20 directly bounds to the YY1 promoter in C2C12 cells. In a similar manner, YY1 expression was elevated while myosin heavy chain expression was decreased in PHF20 transgenic (TG) mice. Histological analysis revealed abnormalities in the shape and length of muscles in PHF20-TG mice. Furthermore, PHF20-TG muscles slowly regenerated after cardiotoxin injection, indicating that PHF20 affected muscle differentiation and regeneration after injury in vivo. Taken together, these results suggested that PHF20 plays an important role in myogenic differentiation by regulating YY1.
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Labuzan SA, Lynch SA, Cooper LM, Waddell DS. Inhibition of protein phosphatase methylesterase 1 dysregulates MAP kinase signaling and attenuates muscle cell differentiation. Gene 2020; 739:144515. [DOI: 10.1016/j.gene.2020.144515] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2020] [Revised: 02/24/2020] [Accepted: 02/25/2020] [Indexed: 02/07/2023]
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Verpoorten S, Sfyri P, Scully D, Mitchell R, Tzimou A, Mougios V, Patel K, Matsakas A. Loss of CD36 protects against diet-induced obesity but results in impaired muscle stem cell function, delayed muscle regeneration and hepatic steatosis. Acta Physiol (Oxf) 2020; 228:e13395. [PMID: 31599493 DOI: 10.1111/apha.13395] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2019] [Revised: 09/29/2019] [Accepted: 10/01/2019] [Indexed: 12/24/2022]
Abstract
AIM The prevalence of obesity is a major risk factor for cardiovascular and metabolic diseases including impaired skeletal muscle regeneration. Since skeletal muscle regenerative capacity is regulated by satellite cells, we aimed to investigate whether a high-fat diet impairs satellite cell function and whether this is linked to fatty acid uptake via CD36. We also aimed to determine whether loss of CD36 impacts on muscle redox homeostasis and skeletal muscle regenerative capacity. METHODS We studied the impact of a high-fat diet and CD36 deficiency on murine skeletal muscle morphology, redox homeostasis, satellite cell function, bioenergetics and lipid accumulation in the liver. We also determined the effect of CD36 deficiency on skeletal muscle regeneration. RESULTS High-fat diet increased body weight, intramuscular lipid accumulation and oxidative stress in wild-type mice that were significantly mitigated in CD36-deficient mice. High-fat diet and CD36 deficiency independently attenuated satellite cell function on single fibres and myogenic capacity on primary satellite cells. CD36 deficiency resulted in delayed skeletal muscle regeneration following acute injury with cardiotoxin. CD36-deficient and wild-type primary satellite cells had distinct bioenergetic profiles in response to palmitate. High-fat diet induced hepatic steatosis in both genotypes that was more pronounced in the CD36-deficient mice. CONCLUSION This study demonstrates that CD36 deficiency protects against diet-induced obesity, intramuscular lipid deposition and oxidative stress but results in impaired muscle satellite cell function, delayed muscle regeneration and hepatic steatosis. CD36 is a key mediator of fatty acid uptake in skeletal muscle, linking obesity with satellite cell function and muscle regeneration.
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Affiliation(s)
- Sandrine Verpoorten
- Molecular Physiology Laboratory Centre for Atherothrombosis & Metabolic Disease Hull York Medical School University of Hull Hull UK
| | - Peggy Sfyri
- Molecular Physiology Laboratory Centre for Atherothrombosis & Metabolic Disease Hull York Medical School University of Hull Hull UK
| | - David Scully
- Molecular Physiology Laboratory Centre for Atherothrombosis & Metabolic Disease Hull York Medical School University of Hull Hull UK
| | - Robert Mitchell
- School of Biological Sciences University of Reading Reading UK
| | - Anastasia Tzimou
- Laboratory of Evaluation of Human Biological Performance School of Physical Education and Sports Science at Thessaloniki Aristotle University of Thessaloniki Thessaloniki Greece
| | - Vassilis Mougios
- Laboratory of Evaluation of Human Biological Performance School of Physical Education and Sports Science at Thessaloniki Aristotle University of Thessaloniki Thessaloniki Greece
| | - Ketan Patel
- School of Biological Sciences University of Reading Reading UK
| | - Antonios Matsakas
- Molecular Physiology Laboratory Centre for Atherothrombosis & Metabolic Disease Hull York Medical School University of Hull Hull UK
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48
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Chromatin accessibility is associated with the changed expression of miRNAs that target members of the Hippo pathway during myoblast differentiation. Cell Death Dis 2020; 11:148. [PMID: 32094347 PMCID: PMC7039994 DOI: 10.1038/s41419-020-2341-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2019] [Revised: 02/08/2020] [Accepted: 02/10/2020] [Indexed: 12/11/2022]
Abstract
miRNAs reportedly participate in various biological processes, such as skeletal muscle proliferation and differentiation. However, the regulation of differentially expressed (DE) miRNAs and their function in myogenesis remain unclear. Herein, miRNA expression profiles and regulation during C2C12 differentiation were analyzed in relation to chromatin states by RNA-seq, ATAC-seq, and ChIP-seq. We identified 19 known and nine novel differentially expressed miRNAs at days 0, 1, 2, and 4. The expression of the differentially expressed miRNAs was related to the chromatin states of the 113 surrounding open chromatin regions defined by ATAC-seq peaks. Of these open chromatin regions, 44.25% were colocalized with MyoD/MyoG binding sites. The remainder of the above open chromatin regions were enriched with motifs of the myoblast-expressed AP-1 family, Ctcf, and Bach2 transcription factors (TFs). Additionally, the target genes of the above differentially expressed miRNAs were enriched primarily in muscle growth and development pathways, especially the Hippo signaling pathway. Moreover, via combining a loss-of-function assay with Q-PCR, western blotting, and immunofluorescence, we confirmed that the Hippo signaling pathway was responsible for C2C12 myoblast differentiation. Thus, our results showed that these differentially expressed miRNAs were regulated by chromatin states and affected muscle differentiation through the Hippo signaling pathway. Our findings provide new insights into the function of these differentially expressed miRNAs and the regulation of their expression during myoblast differentiation.
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Cooper LM, Hanson A, Kavanagh JA, Waddell DS. Fam83d modulates MAP kinase and AKT signaling and is induced during neurogenic skeletal muscle atrophy. Cell Signal 2020; 70:109576. [PMID: 32092437 DOI: 10.1016/j.cellsig.2020.109576] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2019] [Revised: 02/20/2020] [Accepted: 02/20/2020] [Indexed: 01/08/2023]
Abstract
Skeletal muscle atrophy is a serious health condition that can arise due to aging, cancer, corticosteroid exposure, and denervation. Previous work comparing gene expression profiles in control and denervated muscle tissue revealed for the first time that Fam83d is expressed in skeletal muscle and is significantly induced in response to denervation. Quantitative PCR and Western blot analysis found that Fam83d is more highly expressed in proliferating myoblasts compared to differentiated myotubes. Characterization of the transcriptional regulation of Fam83d showed that ectopic expression of myogenic regulatory factors inhibits Fam83d reporter gene activity. To assess where Fam83d is localized in the cell, Fam83d was fused with green fluorescent protein, expressed in C2C12 cells, and found to localize in a punctate manner to the cytoplasm of muscle cells. To assess function, Fam83d was ectopically expressed in cultured muscle cells and markers of muscle cell differentiation, the MAP Kinase signaling pathway, and the AKT signaling pathway were analyzed. Fam83d overexpression resulted in significant repression of myosin heavy chain and myogenin expression, while phosphorylated ERK and AKT were also significantly repressed. Interestingly, inhibition of the 26S proteasome and the MAP kinase signaling pathway both resulted in stabilization of Fam83d during muscle cell differentiation. Finally, Fam83d has a putative phospholipase D-like domain that appears to be necessary for destabilizing casein kinase Iα and inhibiting ERK phosphorylation in cultured myoblasts. The discovery that Fam83d is expressed in skeletal muscle combined with the observation that Fam83d, a potential modulator of MAP kinase and AKT signaling, is induced in response to neurogenic atrophy helps further our understanding of the molecular and cellular events of skeletal muscle wasting.
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Affiliation(s)
- Lisa M Cooper
- University of North Florida, Department of Biology, 1 UNF Drive, Jacksonville, FL 32224, United States of America
| | - Abby Hanson
- University of North Florida, Department of Biology, 1 UNF Drive, Jacksonville, FL 32224, United States of America
| | - Jack A Kavanagh
- University of North Florida, Department of Biology, 1 UNF Drive, Jacksonville, FL 32224, United States of America
| | - David S Waddell
- University of North Florida, Department of Biology, 1 UNF Drive, Jacksonville, FL 32224, United States of America.
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50
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Gurjar AA, Kushwaha S, Chattopadhyay S, Das N, Pal S, China SP, Kumar H, Trivedi AK, Guha R, Chattopadhyay N, Sanyal S. Long acting GLP-1 analog liraglutide ameliorates skeletal muscle atrophy in rodents. Metabolism 2020; 103:154044. [PMID: 31812628 DOI: 10.1016/j.metabol.2019.154044] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/19/2019] [Revised: 10/28/2019] [Accepted: 12/02/2019] [Indexed: 12/13/2022]
Abstract
BACKGROUND Skeletal muscle atrophy is characterized by muscle wasting with partial or complete functional loss. Skeletal muscle atrophy severely affects the quality of life and currently, there is no available therapy except for spinal muscular atrophy. OBJECTIVE Drug repositioning is a promising strategy that reduces cost and time due to prior availability of safety and toxicity details. Here we investigated myogenic and anti-atrophy effects of glucagon-like peptide-1 (GLP-1) analog liraglutide. METHODS We used several in vitro atrophy models in C2C12 cells and in vivo models in Sprague Dawley rats to study Liraglutide's efficacy. Western blotting was used to assess cAMP-dependent signaling pathways specifically activated by liraglutide. Therapeutic efficacy of liraglutide was investigated by histological analysis of transverse muscle sections followed by morphometry. Myogenic capacity was investigated by immunoblotting for myogenic factors. RESULTS Liraglutide induced myogenesis in C2C12 myoblasts through GLP-1 receptor via a cAMP-dependent complex network of signaling events involving protein kinase A, phosphoinositide 3-kinase/protein kinase B, p38 mitogen-activated protein kinase and extracellular signal-regulated kinase. Liraglutide imparted protection against freeze injury, denervation, and dexamethasone -induced skeletal muscle atrophy and improved muscular function in all these models. In a therapeutic model, liraglutide restored myofibrillar architecture in ovariectomy-induced atrophy. Anti-atrophy actions of liraglutide involved suppression of atrogene expression and enhancement in expression of myogenic factors. CONCLUSION Liraglutide imparted protection and restored myofibrillar architecture in diverse models of muscle atrophy. Given its potent anti-atrophy, and recently reported osteoanabolic effects, we propose liraglutide's clinical evaluation in skeletal muscle atrophy and musculoskeletal disorders associated with diverse pathologies.
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Affiliation(s)
- Anagha Ashok Gurjar
- Division of Biochemistry, CSIR-Central Drug Research Institute, Lucknow 226031, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad-201002, India
| | - Sapana Kushwaha
- Division of Biochemistry, CSIR-Central Drug Research Institute, Lucknow 226031, India
| | - Sourav Chattopadhyay
- Division of Biochemistry, CSIR-Central Drug Research Institute, Lucknow 226031, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad-201002, India
| | - Nabanita Das
- Division of Biochemistry, CSIR-Central Drug Research Institute, Lucknow 226031, India
| | - Subhashis Pal
- Division of Endocrinology, CSIR-Central Drug Research Institute, Lucknow 226031, India
| | - Shyamsundar Pal China
- Division of Endocrinology, CSIR-Central Drug Research Institute, Lucknow 226031, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad-201002, India
| | - Harish Kumar
- Division of Biochemistry, CSIR-Central Drug Research Institute, Lucknow 226031, India
| | - Arun Kumar Trivedi
- Division of Biochemistry, CSIR-Central Drug Research Institute, Lucknow 226031, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad-201002, India
| | - Rajdeep Guha
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad-201002, India; Laboratory Animals Facility CSIR-Central Drug Research Institute, Lucknow 226031, India
| | - Naibedya Chattopadhyay
- Division of Endocrinology, CSIR-Central Drug Research Institute, Lucknow 226031, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad-201002, India
| | - Sabyasachi Sanyal
- Division of Biochemistry, CSIR-Central Drug Research Institute, Lucknow 226031, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad-201002, India.
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