1
|
Rauen KA, Tidyman WE. RASopathies - what they reveal about RAS/MAPK signaling in skeletal muscle development. Dis Model Mech 2024; 17:dmm050609. [PMID: 38847227 PMCID: PMC11179721 DOI: 10.1242/dmm.050609] [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] [Indexed: 06/12/2024] Open
Abstract
RASopathies are rare developmental genetic syndromes caused by germline pathogenic variants in genes that encode components of the RAS/mitogen-activated protein kinase (MAPK) signal transduction pathway. Although the incidence of each RASopathy syndrome is rare, collectively, they represent one of the largest groups of multiple congenital anomaly syndromes and have severe developmental consequences. Here, we review our understanding of how RAS/MAPK dysregulation in RASopathies impacts skeletal muscle development and the importance of RAS/MAPK pathway regulation for embryonic myogenesis. We also discuss the complex interactions of this pathway with other intracellular signaling pathways in the regulation of skeletal muscle development and growth, and the opportunities that RASopathy animal models provide for exploring the use of pathway inhibitors, typically used for cancer treatment, to correct the unique skeletal myopathy caused by the dysregulation of this pathway.
Collapse
Affiliation(s)
- Katherine A Rauen
- Department of Pediatrics, Division of Genomic Medicine, University of California Davis, Sacramento, CA, 95817, USA
- University of California Davis MIND Institute, Sacramento, CA 95817, USA
| | - William E Tidyman
- University of California Davis MIND Institute, Sacramento, CA 95817, USA
| |
Collapse
|
2
|
Liang W, Han M, Li G, Dang W, Wu H, Meng X, Zhen Y, Lin W, Ao R, Hu X, An Y. Perfusable adipose decellularized extracellular matrix biological scaffold co-recellularized with adipose-derived stem cells and L6 promotes functional skeletal muscle regeneration following volumetric muscle loss. Biomaterials 2024; 307:122529. [PMID: 38489911 DOI: 10.1016/j.biomaterials.2024.122529] [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: 11/05/2023] [Revised: 02/02/2024] [Accepted: 03/08/2024] [Indexed: 03/17/2024]
Abstract
Muscle tissue engineering is a promising therapeutic strategy for volumetric muscle loss (VML). Among them, decellularized extracellular matrix (dECM) biological scaffolds have shown certain effects in restoring muscle function. However, researchers have inconsistent or even contradictory results on whether dECM biological scaffolds can efficiently regenerate muscle fibers and restore muscle function. This suggests that therapeutic strategies based on dECM biological scaffolds need to be further optimized and developed. In this study, we used a recellularization method of perfusing adipose-derived stem cells (ASCs) and L6 into adipose dECM (adECM) through vascular pedicles. On one hand, this strategy ensures sufficient quantity and uniform distribution of seeded cells inside scaffold. On the other hand, auxiliary L6 cells addresses the issue of low myogenic differentiation efficiency of ASCs. Subsequently, the treatment of VML animal experiments showed that the combined recellularization strategy can improve muscle regeneration and angiogenesis than the single ASCs recellularization strategy, and the TA of former had greater muscle contraction strength. Further single-nucleus RNA sequencing (snRNA-seq) analysis found that L6 cells induced ASCs transform into a new subpopulation of cells highly expressing Mki67, CD34 and CDK1 genes, which had stronger ability of oriented myogenic differentiation. This study demonstrates that co-seeding ASCs and L6 cells through vascular pedicles is a promising recellularization strategy for adECM biological scaffolds, and the engineered muscle tissue constructed based on this has significant therapeutic effects on VML. Overall, this study provides a new paradigm for optimizing and developing dECM-based therapeutic strategies.
Collapse
Affiliation(s)
- Wei Liang
- Department of Plastic Surgery, Peking University Third Hospital, Beijing, 100191, China
| | - Meng Han
- Department of Plastic Surgery, Peking University Third Hospital, Beijing, 100191, China
| | - Guan Li
- Department of Plastic Surgery, Peking University Third Hospital, Beijing, 100191, China
| | - Wanwen Dang
- Department of Plastic Surgery, Peking University Third Hospital, Beijing, 100191, China
| | - Huiting Wu
- Department of Plastic Surgery, Peking University Third Hospital, Beijing, 100191, China
| | - Xiaoyu Meng
- Department of Plastic Surgery, Peking University Third Hospital, Beijing, 100191, China
| | - Yonghuan Zhen
- Department of Plastic Surgery, Peking University Third Hospital, Beijing, 100191, China
| | - Weibo Lin
- Department of Plastic Surgery, Peking University Third Hospital, Beijing, 100191, China
| | - Rigele Ao
- Department of Plastic Surgery, Peking University Third Hospital, Beijing, 100191, China
| | - Xiaoqing Hu
- Department of Sports Medicine, Peking University Third Hospital, Beijing, 100191, China.
| | - Yang An
- Department of Plastic Surgery, Peking University Third Hospital, Beijing, 100191, China.
| |
Collapse
|
3
|
Steiman S, Miyake T, McDermott JC. FoxP1 Represses MEF2A in Striated Muscle. Mol Cell Biol 2024; 44:57-71. [PMID: 38483114 PMCID: PMC10950271 DOI: 10.1080/10985549.2024.2323959] [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: 09/06/2023] [Accepted: 01/23/2024] [Indexed: 03/19/2024] Open
Abstract
Myocyte enhancer factor 2 (MEF2) proteins are involved in multiple developmental, physiological, and pathological processes in vertebrates. Protein-protein interactions underlie the plethora of biological processes impacted by MEF2A, necessitating a detailed characterization of the MEF2A interactome. A nanobody based affinity-purification/mass spectrometry strategy was employed to achieve this goal. Specifically, the MEF2A protein complexes were captured from myogenic lysates using a GFP-tagged MEF2A protein immobilized with a GBP-nanobody followed by LC-MS/MS proteomic analysis to identify MEF2A interactors. After bioinformatic analysis, we further characterized the interaction of MEF2A with a transcriptional repressor, FOXP1. FOXP1 coprecipitated with MEF2A in proliferating myogenic cells which diminished upon differentiation (myotube formation). Ectopic expression of FOXP1 inhibited MEF2A driven myogenic reporter genes (derived from the creatine kinase muscle and myogenin genes) and delayed induction of endogenous myogenin during differentiation. Conversely, FOXP1 depletion enhanced MEF2A transactivation properties and myogenin expression. The FoxP1:MEF2A interaction is also preserved in cardiomyocytes and FoxP1 depletion enhanced cardiomyocyte hypertrophy. FOXP1 prevented MEF2A phosphorylation and activation by the p38MAPK pathway. Overall, these data implicate FOXP1 in restricting MEF2A function in order to avoid premature differentiation in myogenic progenitors and also to possibly prevent re-activation of embryonic gene expression in cardiomyocyte hypertrophy.
Collapse
Affiliation(s)
- Sydney Steiman
- Department of Biology, York University, Toronto, ON, Canada
- Muscle Health Research Centre (MHRC), York University, Toronto, ON, Canada
- Centre for Research in Biomolecular Interactions (CRBI), York University, Toronto, ON, Canada
| | - Tetsuaki Miyake
- Department of Biology, York University, Toronto, ON, Canada
- Muscle Health Research Centre (MHRC), York University, Toronto, ON, Canada
- Centre for Research in Biomolecular Interactions (CRBI), York University, Toronto, ON, Canada
| | - John C. McDermott
- Department of Biology, York University, Toronto, ON, Canada
- Muscle Health Research Centre (MHRC), York University, Toronto, ON, Canada
- Centre for Research in Biomolecular Interactions (CRBI), York University, Toronto, ON, Canada
| |
Collapse
|
4
|
Chen SL, Wu CC, Li N, Weng TH. Post-transcriptional regulation of myogenic transcription factors during muscle development and pathogenesis. J Muscle Res Cell Motil 2024; 45:21-39. [PMID: 38206489 DOI: 10.1007/s10974-023-09663-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2023] [Accepted: 11/29/2023] [Indexed: 01/12/2024]
Abstract
The transcriptional regulation of skeletal muscle (SKM) development (myogenesis) has been documented for over 3 decades and served as a paradigm for tissue-specific cell type determination and differentiation. Myogenic stem cells (MuSC) in embryos and adult SKM are regulated by the transcription factors Pax3 and Pax7 for their stem cell characteristics, while their lineage determination and terminal differentiation are both dictated by the myogenic regulatory factors (MRF) that comprise Mrf4, Myf5, Myogenin, and MyoD. The myocyte enhancer factor Mef2c is activated by MRF during terminal differentiation and collaborates with them to promote myoblast fusion and differentiation. Recent studies have found critical regulation of these myogenic transcription factors at mRNA level, including subcellular localization, stability, and translational regulation. Therefore, the regulation of Pax3/7, MRFs and Mef2c mRNAs by RNA-binding factors and non-coding RNAs (ncRNA), including microRNAs and long non-coding RNAs (lncRNA), will be the focus of this review and the impact of this regulation on myogenesis will be further addressed. Interestingly, the stem cell characteristics of MuSC has been found to be critically regulated by ncRNAs, implying the involvement of ncRNAs in SKM homeostasis and regeneration. Current studies have further identified that some ncRNAs are implicated in the etiology of some SKM diseases and can serve as valuable tools/indicators for prediction of prognosis. The roles of ncRNAs in the MuSC biology and SKM disease etiology will also be discussed in this review.
Collapse
Affiliation(s)
- Shen-Liang Chen
- Department of Life Sciences, National Central University, 300 Jhongda Rd, Jhongli, 32001, Taiwan.
| | - Chuan-Che Wu
- Department of Life Sciences, National Central University, 300 Jhongda Rd, Jhongli, 32001, Taiwan
| | - Ning Li
- Department of Life Sciences, National Central University, 300 Jhongda Rd, Jhongli, 32001, Taiwan
| | - Tzu-Han Weng
- Department of Life Sciences, National Central University, 300 Jhongda Rd, Jhongli, 32001, Taiwan
| |
Collapse
|
5
|
Bataille S, McKay N, Koppe L, Beau A, Benoit B, Bartoli M, Da Silva N, Poitevin S, Aniort J, Chermiti R, Burtey S, Dou L. Indoxyl sulfate inhibits muscle cell differentiation via Myf6/MRF4 and MYH2 downregulation. Nephrol Dial Transplant 2023; 39:103-113. [PMID: 37349959 DOI: 10.1093/ndt/gfad123] [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: 03/14/2023] [Indexed: 06/24/2023] Open
Abstract
BACKGROUND Chronic kidney disease (CKD) is associated with a significant decrease in muscle strength and mass, possibly related to muscle cell damage by uremic toxins. Here, we studied in vitro and in vivo the effect of indoxyl sulfate (IS), an indolic uremic toxin, on myoblast proliferation, differentiation and expression of myogenic regulatory factors (MRF)-myoblast determination protein 1 (MyoD1), myogenin (Myog), Myogenic Factor 5 (Myf5) and myogenic regulatory factor 4 (Myf6/MRF4)-and expression of myosin heavy chain, Myh2. METHODS C2C12 myoblasts were cultured in vitro and differentiated in myotubes for 7 days in the presence of IS at a uremic concentration of 200 µM. Myocytes morphology and differentiation was analyzed after hematoxylin-eosin staining. MRF genes' expression was studied using reverse transcription polymerase chain reaction in myocytes and 5/6th nephrectomized mice muscle. Myf6/MRF4 protein expression was studied using enzyme-linked immunosorbent assay; MYH2 protein expression was studied using western blotting. The role of Aryl Hydrocarbon Receptor (AHR)-the cell receptor of IS-was studied by adding an AHR inhibitor into the cell culture milieu. RESULTS In the presence of IS, the myotubes obtained were narrower and had fewer nuclei than control myotubes. The presence of IS during differentiation did not modify the gene expression of the MRFs Myf5, MyoD1 and Myog, but induced a decrease in expression of Myf6/MRF4 and MYH2 at the mRNA and the protein level. AHR inhibition by CH223191 did not reverse the decrease in Myf6/MRF4 mRNA expression induced by IS, which rules out the implication of the ARH genomic pathway. In 5/6th nephrectomized mice, the Myf6/MRF4 gene was down-regulated in striated muscles. CONCLUSION In conclusion, IS inhibits Myf6/MRF4 and MYH2 expression during differentiation of muscle cells, which could lead to a defect in myotube structure. Through these new mechanisms, IS could participate in muscle atrophy observed in CKD.
Collapse
Affiliation(s)
- Stanislas Bataille
- Aix Marseille University, INSERM, INRAE, C2VN, Marseille, France
- Department of Nephrology, Phocean Nephrology Institute, Clinique Bouchard, ELSAN, Marseille, France
| | - Nathalie McKay
- Aix Marseille University, INSERM, INRAE, C2VN, Marseille, France
| | - Laetitia Koppe
- Department of Nephrology, Hospices Civils de Lyon, Centre Hospitalier Lyon-Sud, Pierre-Bénite, France
- University Lyon, CarMeN lab, INSERM U1060, INRAE, Université Claude Bernard Lyon 1, Pierre Bénite, France
| | - Alice Beau
- University Lyon, CarMeN lab, INSERM U1060, INRAE, Université Claude Bernard Lyon 1, Pierre Bénite, France
| | - Bérengère Benoit
- University Lyon, CarMeN lab, INSERM U1060, INRAE, Université Claude Bernard Lyon 1, Pierre Bénite, France
| | - Marc Bartoli
- Aix Marseille University, MMG, INSERM, Marseille, France
| | | | | | - Julien Aniort
- Nephrology, Dialysis and Transplantation Department, Gabriel Montpied University Hospital, University Hospital of Clermont-Ferrand, Clermont-Ferrand, France
| | - Rania Chermiti
- Aix Marseille University, INSERM, INRAE, C2VN, Marseille, France
| | - Stéphane Burtey
- Aix Marseille University, INSERM, INRAE, C2VN, Marseille, France
- Aix-Marseille University, Centre de Néphrologie et Transplantation Rénale, AP-HM Hôpital de la Conception, Marseille, France
| | - Laetitia Dou
- Aix Marseille University, INSERM, INRAE, C2VN, Marseille, France
| |
Collapse
|
6
|
Loder S, Patel N, Morgani S, Sambon M, Leucht P, Levi B. Genetic models for lineage tracing in musculoskeletal development, injury, and healing. Bone 2023; 173:116777. [PMID: 37156345 PMCID: PMC10860167 DOI: 10.1016/j.bone.2023.116777] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/12/2023] [Revised: 04/07/2023] [Accepted: 04/17/2023] [Indexed: 05/10/2023]
Abstract
Musculoskeletal development and later post-natal homeostasis are highly dynamic processes, marked by rapid structural and functional changes across very short periods of time. Adult anatomy and physiology are derived from pre-existing cellular and biochemical states. Consequently, these early developmental states guide and predict the future of the system as a whole. Tools have been developed to mark, trace, and follow specific cells and their progeny either from one developmental state to the next or between circumstances of health and disease. There are now many such technologies alongside a library of molecular markers which may be utilized in conjunction to allow for precise development of unique cell 'lineages'. In this review, we first describe the development of the musculoskeletal system beginning as an embryonic germ layer and at each of the key developmental stages that follow. We then discuss these structures in the context of adult tissues during homeostasis, injury, and repair. Special focus is given in each of these sections to the key genes involved which may serve as markers of lineage or later in post-natal tissues. We then finish with a technical assessment of lineage tracing and the techniques and technologies currently used to mark cells, tissues, and structures within the musculoskeletal system.
Collapse
Affiliation(s)
- Shawn Loder
- Department of Plastic Surgery, University of Pittsburgh, Scaife Hall, Suite 6B, 3550 Terrace Street, Pittsburgh, PA 15261, USA
| | - Nicole Patel
- Center for Organogenesis and Trauma, Department of Surgery, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
| | | | | | | | - Benjamin Levi
- Center for Organogenesis and Trauma, Department of Surgery, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA.
| |
Collapse
|
7
|
Marchioretti C, Andreotti R, Zuccaro E, Lieberman AP, Basso M, Pennuto M. Spinal and bulbar muscular atrophy: From molecular pathogenesis to pharmacological intervention targeting skeletal muscle. Curr Opin Pharmacol 2023; 71:102394. [PMID: 37463556 DOI: 10.1016/j.coph.2023.102394] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2023] [Revised: 06/06/2023] [Accepted: 06/19/2023] [Indexed: 07/20/2023]
Abstract
The clinical characteristics of SBMA, also known as Kennedy's disease (OMIM 313200), were initially documented by Dr. H Kawahara in the 18th century and a hundred years later by Dr. W. Kennedy. SBMA is a neuromuscular disease caused by expansions of a CAG microsatellite tandem repeat in exon 1 of the androgen receptor (AR) gene located on the X chromosome. These expansions result in the production of AR with an aberrantly expanded polyglutamine (polyQ) tract. In this review, we explore recent advancements in the significance of gene expression changes in skeletal muscle and discuss how pharmacological interventions targeting this aspect of disease pathogenesis can potentially be translated into therapies for SBMA patients.
Collapse
Affiliation(s)
- Caterina Marchioretti
- Department of Biomedical Sciences, University of Padova, Padova, Italy; Veneto Institute of Molecular Medicine (VIMM), Padova, Italy
| | - Roberta Andreotti
- Department of Biomedical Sciences, University of Padova, Padova, Italy; Veneto Institute of Molecular Medicine (VIMM), Padova, Italy
| | - Emanuela Zuccaro
- Department of Biomedical Sciences, University of Padova, Padova, Italy; Veneto Institute of Molecular Medicine (VIMM), Padova, Italy
| | - Andrew P Lieberman
- Department of Pathology, University of Michigan Medical School, Ann Arbor, MI, USA.
| | - Manuela Basso
- Department of Cellular, Computational and Integrative Biology (CIBIO), University of Trento, Trento, Italy.
| | - Maria Pennuto
- Department of Biomedical Sciences, University of Padova, Padova, Italy; Veneto Institute of Molecular Medicine (VIMM), Padova, Italy.
| |
Collapse
|
8
|
Gene Structure, Expression and Function Analysis of MEF2 in the Pacific White Shrimp Litopenaeus vannamei. Int J Mol Sci 2023; 24:ijms24065832. [PMID: 36982906 PMCID: PMC10051702 DOI: 10.3390/ijms24065832] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2023] [Revised: 03/08/2023] [Accepted: 03/15/2023] [Indexed: 03/22/2023] Open
Abstract
The Pacific white shrimp Litopenaeus vannamei is the most economically important crustacean in the world. The growth and development of shrimp muscle has always been the focus of attention. Myocyte Enhancer Factor 2 (MEF2), a member of MADS transcription factor, has an essential influence on various growth and development programs, including myogenesis. In this study, based on the genome and transcriptome data of L. vannamei, the gene structure and expression profiles of MEF2 were characterized. We found that the LvMEF2 was widely expressed in various tissues, mainly in the Oka organ, brain, intestine, heart, and muscle. Moreover, LvMEF2 has a large number of splice variants, and the main forms are the mutually exclusive exon and alternative 5′ splice site. The expression profiles of the LvMEF2 splice variants varied under different conditions. Interestingly, some splice variants have tissue or developmental expression specificity. After RNA interference into LvMEF2, the increment in the body length and weight decreased significantly and even caused death, suggesting that LvMEF2 can affect the growth and survival of L. vannamei. Transcriptome analysis showed that after LvMEF2 was knocked down, the protein synthesis and immune-related pathways were affected, and the associated muscle protein synthesis decreased, indicating that LvMEF2 affected muscle formation and the immune system. The results provide an important basis for future studies of the MEF2 gene and the mechanism of muscle growth and development in shrimp.
Collapse
|
9
|
Liu C, Cao Y, Li L, Wang Y, Meng Q. Overexpression of miR-29ab1 Cluster Results in Excessive Muscle Growth in 1-Month-old Mice by Inhibiting Mstn. DNA Cell Biol 2023; 42:43-52. [PMID: 36576412 DOI: 10.1089/dna.2022.0247] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
Skeletal muscle mass is closely related to strength and health. Multiple genes and signaling pathways are involved in the regulation of skeletal muscle hypertrophy. miR-29 can participate in various processes of skeletal muscle development through different target genes. However, studies are needed on the function of miR-29 in skeletal muscle during mouse puberty. We used mice in which overexpression of miR-29ab1 cluster could be induced specifically within skeletal muscle, and investigated the effects of miR-29 overexpression on skeletal muscle at 1 month of age. We found that the overexpression of miR-29ab1 cluster in juvenile mice caused skeletal muscle mass and myofiber cross-sectional area to increase. The study on the mechanism of miR-29 inducing skeletal muscle hypertrophy had found that miR-29 achieved its function by inhibiting the expression of Mstn. At the same time, injured myofibers were present within miR-29ab1 cluster overexpressing skeletal muscle. The damage of skeletal muscle may be due to the inhibition of the type IV collagen by miR-29. These results indicate that although the overexpression of miR-29ab1 cluster can induce skeletal muscle hypertrophy in mouse juvenile, it simultaneously causes skeletal muscle damage.
Collapse
Affiliation(s)
- Chuncheng Liu
- The State Key Laboratory for Agrobiotechnology, College of Biological Sciences, China Agricultural University, Beijing, China.,Inner Mongolia Key Laboratory of Functional Genome Bioinformatics, School of Life Science and Technology, Inner Mongolia University of Science and Technology, Baotou, China
| | - Yuxin Cao
- The State Key Laboratory for Agrobiotechnology, College of Biological Sciences, China Agricultural University, Beijing, China.,Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Biological Science, China Agricultural University, Beijing, China
| | - Lei Li
- The State Key Laboratory for Agrobiotechnology, College of Biological Sciences, China Agricultural University, Beijing, China.,Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Biological Science, China Agricultural University, Beijing, China
| | - Yiting Wang
- Inner Mongolia Key Laboratory of Functional Genome Bioinformatics, School of Life Science and Technology, Inner Mongolia University of Science and Technology, Baotou, China
| | - Qingyong Meng
- The State Key Laboratory for Agrobiotechnology, College of Biological Sciences, China Agricultural University, Beijing, China.,Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Biological Science, China Agricultural University, Beijing, China
| |
Collapse
|
10
|
Lissek T. Activity-Dependent Induction of Younger Biological Phenotypes. Adv Biol (Weinh) 2022; 6:e2200119. [PMID: 35976161 DOI: 10.1002/adbi.202200119] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2022] [Revised: 07/11/2022] [Indexed: 01/28/2023]
Abstract
In several mammalian species, including humans, complex stimulation patterns such as cognitive and physical exercise lead to improvements in organ function, organism health and performance, as well as possibly longer lifespans. A framework is introduced here in which activity-dependent transcriptional programs, induced by these environmental stimuli, move somatic cells such as neurons and muscle cells toward a state that resembles younger cells to allow remodeling and adaptation of the organism. This cellular adaptation program targets several process classes that are heavily implicated in aging, such as mitochondrial metabolism, cell-cell communication, and epigenetic information processing, and leads to functional improvements in these areas. The activity-dependent gene program (ADGP) can be seen as a natural, endogenous cellular reprogramming mechanism that provides deep insight into the principles of inducible improvements in cell and organism function and can guide the development of therapeutic approaches for longevity. Here, these ADGPs are analyzed, exemplary critical molecular nexus points such as cAMP response element-binding protein, myocyte enhancer factor 2, serum response factor, and c-Fos are identified, and it is explored how one may leverage them to prevent, attenuate, and reverse human aging-related decline of body function.
Collapse
Affiliation(s)
- Thomas Lissek
- Interdisciplinary Center for Neurosciences, Heidelberg University, Im Neuenheimer Feld 366, 69120, Heidelberg, Germany
| |
Collapse
|
11
|
Hayashi S, Yonekura S. Mild heat stimulation facilitates muscle hypertrophy in C2C12 and mouse satellite cells through myokine release to the culture medium. Biochem Biophys Res Commun 2022; 635:161-168. [DOI: 10.1016/j.bbrc.2022.10.018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2022] [Accepted: 10/04/2022] [Indexed: 11/02/2022]
|
12
|
Nuclear corepressor SMRT acts as a strong regulator of both β-oxidation and suppressor of fibrosis in the differentiation process of mouse skeletal muscle cells. PLoS One 2022; 17:e0277830. [PMID: 36454860 PMCID: PMC9714868 DOI: 10.1371/journal.pone.0277830] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2022] [Accepted: 11/03/2022] [Indexed: 12/03/2022] Open
Abstract
BACKGROUND Silencing Mediator of Retinoid and Thyroid hormone receptors (SMRT; NCoR2) is a transcriptional corepressor (CoR) which has been recognized as an important player in the regulation of hepatic lipogenesis and in somatic development in mouse embryo. SMRT protein is also widely expressed in mouse connective tissues, for example adipocytes and muscle. We recently reported that mice with global deletion of SMRT develop significant obesity and muscle wasting which are independent from thyroid hormone (TH) signaling and thermogenesis. However, the tissue specific role of SMRT in skeletal muscle is still not clear. METHODS To clarify role of SMRT in muscle differentiation, we made myogenic C2C12 clones which lack SMRT protein (C2C12-SKO) by using CRISPR-Cas9. Wild-type C2C12 (C2C12-WT) and C2C12-SKO cells were cultured in differentiation medium, and the resulting gene and protein profiles were compared between the two cell lines both before and after differentiation. We also analyzed muscle tissues which were dissected from whole body SMRT knockout (KO) mice and their controls. RESULTS We found significant up-regulation of muscle specific β-oxidation markers; Peroxisome proliferator-activated receptor δ (PPARδ) and PPARγ coactivator-1α (PGC-1α) in the C2C12-SKO cells, suggesting that the cells had a similar gene profile to what is found in exercised rodent skeletal muscle. On the other hand, confocal microscopic analysis showed the significant loss of myotubes in C2C12-SKO cells similar to the morphology found in immature myoblasts. Proteomics analysis also confirmed that the C2C12-SKO cells had higher expression of markers of fibrosis (ex. Collagen1A1; COL1A1 and Fibroblast growth factor-2; FGF-2), indicating the up-regulation of Transforming growth factor-β (TGF-β) receptor signaling. Consistent with this, treatment with a specific TGF-β receptor inhibitor ameliorated both the defects in myotube differentiation and fibrosis. CONCLUSION Taken together, we demonstrate that SMRT functions as a pivotal transcriptional mediator for both β-oxidation and the prevention for the fibrosis via TGF-β receptor signaling in the differentiation of C2C12 myoblasts. In contrast to the results from C2C12 cells, SMRT does not appear to play a role in adult skeletal muscle of whole body SMRT KO mice. Thus, SMRT plays a significant role in the differentiation of myoblasts.
Collapse
|
13
|
Shao X, Gong W, Wang Q, Wang P, Shi T, Mahmut A, Qin J, Yao Y, Yan W, Chen D, Chen X, Jiang Q, Guo B. Atrophic skeletal muscle fibre-derived small extracellular vesicle miR-690 inhibits satellite cell differentiation during ageing. J Cachexia Sarcopenia Muscle 2022; 13:3163-3180. [PMID: 36237168 PMCID: PMC9745557 DOI: 10.1002/jcsm.13106] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/29/2022] [Revised: 08/24/2022] [Accepted: 09/02/2022] [Indexed: 12/15/2022] Open
Abstract
BACKGROUND Sarcopenia is a common and progressive skeletal muscle disorder characterized by atrophic muscle fibres and contractile dysfunction. Accumulating evidence shows that the number and function of satellite cells (SCs) decline and become impaired during ageing, which may contribute to impaired regenerative capacity. A series of myokines/small extracellular vesicles (sEVs) released from muscle fibres regulate metabolism in muscle and extramuscular tissues in an autocrine/paracrine/endocrine manner during muscle atrophy. It is still unclear whether myokines/sEVs derived from muscle fibres can affect satellite cell function during ageing. METHODS Aged mice were used to investigate changes in the myogenic capacity of SCs during ageing-induced muscle atrophy. The effects of atrophic myotube-derived sEVs on satellite cell differentiation were investigated by biochemical methods and immunofluorescence staining. Small RNA sequencing was performed to identify differentially expressed sEV microRNAs (miRNAs) between the control myotubes and atrophic myotubes. The target genes of the miRNA were predicted by bioinformatics analysis and verified by luciferase activity assays. The effects of identified miRNA on the myogenic capacity of SCs in vivo were investigated by intramuscular injection of adeno-associated virus (AAV) to overexpress or silence miRNA in skeletal muscle. RESULTS Our study showed that the myogenic capacity of SCs was significantly decreased (50%, n = 6, P < 0.001) in the tibialis anterior muscle of aged mice. We showed that atrophic myotube-derived sEVs inhibited satellite cell differentiation in vitro (n = 3, P < 0.001) and in vivo (35%, n = 6, P < 0.05). We also found that miR-690 was the most highly enriched miRNA among all the screened sEV miRNAs in atrophic myotubes [Log2 (Fold Change) = 7, P < 0.001], which was verified in the atrophic muscle of aged mice (threefold, n = 6, P < 0.001) and aged men with mean age of 71 ± 5.27 years (2.8-fold, n = 10, P < 0.001). MiR-690 can inhibit myogenic capacity of SCs by targeting myocyte enhancer factor 2, including Mef2a, Mef2c and Mef2d, in vitro (n = 3, P < 0.05) and in vivo (n = 6, P < 0.05). Specific silencing of miR-690 in the muscle can promote satellite cell differentiation (n = 6, P < 0.001) and alleviate muscle atrophy in aged mice (n = 6, P < 0.001). CONCLUSIONS Our study demonstrated that atrophic muscle fibre-derived sEV miR-690 may inhibit satellite cell differentiation by targeting myocyte enhancer factor 2 during ageing.
Collapse
Affiliation(s)
- Xiaoyan Shao
- State Key Laboratory of Pharmaceutical Biotechnology, Medical School, Nanjing University & Division of Sports Medicine and Adult Reconstructive Surgery, Department of Orthopedic Surgery, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, Nanjing, Jiangsu, China.,Jiangsu Key Laboratory of Molecular Medicine, Medical School, Nanjing University, Nanjing, Jiangsu, China
| | - Wang Gong
- State Key Laboratory of Pharmaceutical Biotechnology, Medical School, Nanjing University & Division of Sports Medicine and Adult Reconstructive Surgery, Department of Orthopedic Surgery, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, Nanjing, Jiangsu, China.,Jiangsu Key Laboratory of Molecular Medicine, Medical School, Nanjing University, Nanjing, Jiangsu, China
| | - Qianjin Wang
- State Key Laboratory of Pharmaceutical Biotechnology, Medical School, Nanjing University & Division of Sports Medicine and Adult Reconstructive Surgery, Department of Orthopedic Surgery, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, Nanjing, Jiangsu, China.,Jiangsu Key Laboratory of Molecular Medicine, Medical School, Nanjing University, Nanjing, Jiangsu, China
| | - Pu Wang
- State Key Laboratory of Pharmaceutical Biotechnology, Medical School, Nanjing University & Division of Sports Medicine and Adult Reconstructive Surgery, Department of Orthopedic Surgery, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, Nanjing, Jiangsu, China.,Jiangsu Key Laboratory of Molecular Medicine, Medical School, Nanjing University, Nanjing, Jiangsu, China
| | - Tianshu Shi
- State Key Laboratory of Pharmaceutical Biotechnology, Medical School, Nanjing University & Division of Sports Medicine and Adult Reconstructive Surgery, Department of Orthopedic Surgery, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, Nanjing, Jiangsu, China.,Jiangsu Key Laboratory of Molecular Medicine, Medical School, Nanjing University, Nanjing, Jiangsu, China
| | - Abdurahman Mahmut
- State Key Laboratory of Pharmaceutical Biotechnology, Medical School, Nanjing University & Division of Sports Medicine and Adult Reconstructive Surgery, Department of Orthopedic Surgery, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, Nanjing, Jiangsu, China.,Jiangsu Key Laboratory of Molecular Medicine, Medical School, Nanjing University, Nanjing, Jiangsu, China
| | - Jianghui Qin
- State Key Laboratory of Pharmaceutical Biotechnology, Medical School, Nanjing University & Division of Sports Medicine and Adult Reconstructive Surgery, Department of Orthopedic Surgery, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, Nanjing, Jiangsu, China.,Jiangsu Key Laboratory of Molecular Medicine, Medical School, Nanjing University, Nanjing, Jiangsu, China
| | - Yao Yao
- State Key Laboratory of Pharmaceutical Biotechnology, Medical School, Nanjing University & Division of Sports Medicine and Adult Reconstructive Surgery, Department of Orthopedic Surgery, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, Nanjing, Jiangsu, China
| | - Wenjin Yan
- State Key Laboratory of Pharmaceutical Biotechnology, Medical School, Nanjing University & Division of Sports Medicine and Adult Reconstructive Surgery, Department of Orthopedic Surgery, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, Nanjing, Jiangsu, China
| | - Dongyang Chen
- State Key Laboratory of Pharmaceutical Biotechnology, Medical School, Nanjing University & Division of Sports Medicine and Adult Reconstructive Surgery, Department of Orthopedic Surgery, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, Nanjing, Jiangsu, China
| | - Xiang Chen
- State Key Laboratory of Pharmaceutical Biotechnology, Medical School, Nanjing University & Division of Sports Medicine and Adult Reconstructive Surgery, Department of Orthopedic Surgery, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, Nanjing, Jiangsu, China.,Jiangsu Key Laboratory of Molecular Medicine, Medical School, Nanjing University, Nanjing, Jiangsu, China
| | - Qing Jiang
- State Key Laboratory of Pharmaceutical Biotechnology, Medical School, Nanjing University & Division of Sports Medicine and Adult Reconstructive Surgery, Department of Orthopedic Surgery, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, Nanjing, Jiangsu, China.,Jiangsu Key Laboratory of Molecular Medicine, Medical School, Nanjing University, Nanjing, Jiangsu, China.,Laboratory for Bone and Joint Disease, Model Animal Research Center (MARC), Medical School, Nanjing University, Nanjing, Jiangsu, China
| | - Baosheng Guo
- State Key Laboratory of Pharmaceutical Biotechnology, Medical School, Nanjing University & Division of Sports Medicine and Adult Reconstructive Surgery, Department of Orthopedic Surgery, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, Nanjing, Jiangsu, China
| |
Collapse
|
14
|
XIONG Y, HAO Y, CHENG Y, FAN L, SONG G, LI D, QU Y, LEI F. Comparative transcriptomic and metabolomic analysis reveals pectoralis highland adaptation across altitudinal songbirds. Integr Zool 2022; 17:1162-1178. [PMID: 34935284 PMCID: PMC9786770 DOI: 10.1111/1749-4877.12620] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Pectoralis phenotypic variation plays a fundamental role in locomotion and thermogenesis in highland birds. However, its regulatory and metabolic mechanisms remain enigmatic to date. Here, we integrated phenomic, transcriptomic, and metabolomic approaches to determine muscle variation and its underpinning mechanisms across altitudinal songbirds. Phenomics confirmed that all highland birds had considerable increases in muscle oxidative capacity, capillarity, and mitochondrial abundance in our study. Correspondingly, transcriptomic analyses found that differentially expressed genes in phenotype-associated modules enriched for blood vessel, muscle structure development, and mitochondrial organization. Despite similar traits and functional enrichments across highland birds, different mechanisms drove their occurrence in high-altitude tree sparrow and 2 snow finches. Importantly, a metabolic feature shared by all the 3 highland birds is the improvement in insulin sensitivity and glucose utilization through activating insulin signaling pathway, which is vital to increase muscle oxidative capacity and maintain metabolic homeostasis. Nevertheless, fatty acid biosynthesis and oxidation are enhanced in only 2 snow finches which had a long evolutionary history on the high plateau, also differing from ketone body metabolism in recently introduced colonizer of the tree sparrow of the high plateau. Our study represents a vital contribution to reveal the regulatory and metabolic basis of pectoralis variation across altitudinal songbirds.
Collapse
Affiliation(s)
- Ying XIONG
- Key Laboratory of Zoological Systematics and EvolutionInstitute of ZoologyChinese Academy of SciencesBeijingChina,University of Chinese Academy of SciencesBeijingChina
| | - Yan HAO
- Key Laboratory of Zoological Systematics and EvolutionInstitute of ZoologyChinese Academy of SciencesBeijingChina,University of Chinese Academy of SciencesBeijingChina
| | - Yalin CHENG
- Key Laboratory of Zoological Systematics and EvolutionInstitute of ZoologyChinese Academy of SciencesBeijingChina,University of Chinese Academy of SciencesBeijingChina
| | - Liqing FAN
- Key Laboratory of Zoological Systematics and EvolutionInstitute of ZoologyChinese Academy of SciencesBeijingChina,University of Chinese Academy of SciencesBeijingChina,Key Laboratory of Forest Ecology in Tibet Plateau of Ministry of EducationInstitute of Tibet Plateau EcologyTibet Agriculture & Animal Husbandry UniversityNyingchiChina
| | - Gang SONG
- Key Laboratory of Zoological Systematics and EvolutionInstitute of ZoologyChinese Academy of SciencesBeijingChina
| | - Dongming LI
- Key Laboratory of Animal Physiology, Biochemistry and Molecular Biology of Hebei Province, College of Life SciencesHebei Normal UniversityShijiazhuangChina
| | - Yanhua QU
- Key Laboratory of Zoological Systematics and EvolutionInstitute of ZoologyChinese Academy of SciencesBeijingChina
| | - Fumin LEI
- Key Laboratory of Zoological Systematics and EvolutionInstitute of ZoologyChinese Academy of SciencesBeijingChina,University of Chinese Academy of SciencesBeijingChina,Center for Excellence in Animal Evolution and GeneticsChinese Academy of SciencesKunmingChina
| |
Collapse
|
15
|
Potential Satellite Cell-Linked Biomarkers in Aging Skeletal Muscle Tissue: Proteomics and Proteogenomics to Monitor Sarcopenia. Proteomes 2022; 10:proteomes10030029. [PMID: 35997441 PMCID: PMC9396989 DOI: 10.3390/proteomes10030029] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2022] [Revised: 07/28/2022] [Accepted: 08/10/2022] [Indexed: 12/21/2022] Open
Abstract
Sarcopenia (Sp) is the loss of skeletal muscle mass associated with aging which causes an involution of muscle function and strength. Satellite cells (Sc) are myogenic stem cells, which are activated by injury or stress, and repair muscle tissue. With advancing age, there is a decrease in the efficiency of the regenerative response of Sc. Diagnosis occurs with the Sp established by direct assessments of muscle. However, the detection of biomarkers in real-time biofluids by liquid biopsy could represent a step-change in the understanding of the molecular biology and heterogeneity of Sp. A total of 13 potential proteogenomic biomarkers of Sp by their physiological and biological interaction with Sc have been previously described in the literature. Increases in the expression of GDF11, PGC-1α, Sirt1, Pax7, Pax3, Myf5, MyoD, CD34, MyoG, and activation of Notch signaling stimulate Sc activity and proliferation, which could modulate and delay Sp progression. On the contrary, intensified expression of GDF8, p16INK4a, Mrf4, and activation of the Wnt pathway would contribute to early Sp development by directly inducing reduced and/or altered Sc function, which would attenuate the restorative capacity of skeletal muscle. Additionally, tissue biopsy remains an important diagnostic tool. Proteomic profiling of aged muscle tissues has shown shifts toward protein isoforms characteristic of a fast-to-slow transition process and an elevated number of oxidized proteins. In addition, a strong association between age and plasma values of growth differentiation factor 15 (GDF-15) has been described and serpin family A member 3 (serpin A3n) was more secreted by atrophied muscle cells. The identification of these new biomarkers holds the potential to change personalized medicine because it could predict in real time the course of Sp by monitoring its evolution and assessing responses to potential therapeutic strategies.
Collapse
|
16
|
Long DE, Peck BD, Lavin KM, Dungan CM, Kosmac K, Tuggle SC, Bamman MM, Kern PA, Peterson CA. Skeletal muscle properties show collagen organization and immune cell content are associated with resistance exercise response heterogeneity in older persons. J Appl Physiol (1985) 2022; 132:1432-1447. [PMID: 35482328 DOI: 10.1152/japplphysiol.00025.2022] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
In older individuals, hypertrophy from progressive resistance training (PRT) is compromised in approximately one- third of participants in exercise trials. The objective of this study was to establish novel relationships between baseline muscle features and/or their PRT-induced change in vastus lateralis muscle biopsies with hypertrophy outcomes. Multiple linear regression analyses adjusted for sex were performed on phenotypic data from older adults (n=48, 70.8±4.5 years) completing 14 weeks of PRT. Results show that baseline muscle size associates with growth regardless of hypertrophy outcome measure (fiber cross-sectional area (fCSA), β=-0.76, Adj. p<0.01; thigh muscle area by CT, β=-0.75, Adj. p<0.01; DXA thigh lean mass, β=-0.47, Adj. p<0.05). Furthermore, loosely packed collagen organization (β=-0.44, Adj. p<0.05) and abundance of CD11b+/CD206- immune cells (β=-0.36, Adj. p=0.10) were negatively associated with whole muscle hypertrophy, with a significant sex interaction on the latter. Additionally, a composite hypertrophy score generated using all three measures reinforces significant fiber level findings that changes in myonuclei (β=0.67, Adj. p<0.01), changes in immune cells (β=0.48, Adj. p<0.05; both CD11b+/CD206+ and CD11b+/CD206- cells), and capillary density (β=0.56, Adj. p<0.01) are significantly associated with growth. Exploratory single cell RNA-sequencing of CD11b+ cells in muscle in response to resistance exercise showed that macrophages have a mixed phenotype. Collagen associations with macrophages may be an important aspect in muscle response heterogeneity. Detailed histological phenotyping of muscle combined with multiple measures of growth response to resistance training in older persons identify potential new mechanisms underlying response heterogeneity and possible sex differences.
Collapse
Affiliation(s)
- Douglas E Long
- Department of Physical Therapy and Center for Muscle Biology, College of Health Sciences, University of Kentucky, Lexington, KY, United States
| | - Bailey D Peck
- Department of Physical Therapy and Center for Muscle Biology, College of Health Sciences, University of Kentucky, Lexington, KY, United States
| | - Kaleen M Lavin
- Florida Institute for Human and Machine Cognition, Pensacola, FL, United States
| | - Cory M Dungan
- Department of Physical Therapy and Center for Muscle Biology, College of Health Sciences, University of Kentucky, Lexington, KY, United States
| | - Kate Kosmac
- Department of Physical Therapy and Center for Muscle Biology, College of Health Sciences, University of Kentucky, Lexington, KY, United States
| | - Steven Craig Tuggle
- Florida Institute for Human and Machine Cognition, Pensacola, FL, United States.,Center for Exercise Medicine and Department of Cell, Developmental, and Integrative Biology, University of Alabama at Birmingham, Birmingham, AL, United States
| | - Marcas M Bamman
- Florida Institute for Human and Machine Cognition, Pensacola, FL, United States.,Center for Exercise Medicine and Department of Cell, Developmental, and Integrative Biology, University of Alabama at Birmingham, Birmingham, AL, United States
| | - Philip A Kern
- Department of Internal Medicine, Division of Endocrinology, and Barnstable Brown Diabetes and Obesity Center, University of Kentucky, Lexington, KY, United States
| | - Charlotte A Peterson
- Department of Physical Therapy and Center for Muscle Biology, College of Health Sciences, University of Kentucky, Lexington, KY, United States
| |
Collapse
|
17
|
Comprehensive Analysis of Long Noncoding RNA Modified by m 6A Methylation in Oxidative and Glycolytic Skeletal Muscles. Int J Mol Sci 2022; 23:ijms23094600. [PMID: 35562992 PMCID: PMC9105514 DOI: 10.3390/ijms23094600] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2022] [Revised: 04/18/2022] [Accepted: 04/18/2022] [Indexed: 12/23/2022] Open
Abstract
N6-methyladenosine (m6A) is the most common modification in eukaryotic RNAs. Accumulating evidence shows m6A methylation plays vital roles in various biological processes, including muscle and fat differentiation. However, there is a lack of research on lncRNAs’ m6A modification in regulating pig muscle-fiber-type conversion. In this study, we identified novel and differentially expressed lncRNAs in oxidative and glycolytic skeletal muscles through RNA-seq, and further reported the m6A-methylation patterns of lncRNAs via MeRIP-seq. We found that most lncRNAs have one m6A peak, and the m6A peaks were preferentially enriched in the last exon of the lncRNAs. Interestingly, we found that lncRNAs’ m6A levels were positively correlated with their expression homeostasis and levels. Furthermore, we performed conjoint analysis of MeRIP-seq and RNA-seq data and obtained 305 differentially expressed and differentially m6A-modified lncRNAs (dme-lncRNAs). Through QTL enrichment analysis of dme-lncRNAs and PPI analysis for their cis-genes, we finally identified seven key m6A-modified lncRNAs that may play a potential role in muscle-fiber-type conversion. Notably, inhibition of one of the key lncRNAs, MSTRG.14200.1, delayed satellite cell differentiation and stimulated fast-to-slow muscle-fiber conversion. Our study comprehensively analyzed m6A modifications on lncRNAs in oxidative and glycolytic skeletal muscles and provided new targets for the study of pig muscle-fiber-type conversion.
Collapse
|
18
|
Wang X, Liu G, Xie S, Pan L, Tan Q. Growth and Meat Quality of Grass Carp ( Ctenopharyngodon idellus) Responded to Dietary Protein (Soybean Meal) Level Through the Muscle Metabolism and Gene Expression of Myosin Heavy Chains. Front Nutr 2022; 9:833924. [PMID: 35419399 PMCID: PMC8996190 DOI: 10.3389/fnut.2022.833924] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2021] [Accepted: 01/31/2022] [Indexed: 01/23/2023] Open
Abstract
The aim of this study was to investigate the effect of dietary protein level (soybean meal) on growth performance, flesh quality of grass carp, and the related molecular mechanisms. The results showed that appropriate dietary protein levels improved the growth performance, hardness, and pH of muscle while decreasing muscle crude lipid content and cooking loss and altering the antioxidant capacity and metabolic enzymes activities. In addition, appropriate dietary protein promoted the gene expression of myhc-1, myhc-4, myf5, myod, myog, and fgf6a, whereas inhibited that of myhc-7, myhc-2, mrf4, and mstn. Transcriptome profiling of muscle revealed that the flesh quality-specific differences were related to tight junctions and intramuscular fat (IMF) accumulation. GSEA showed that fatty acid metabolism and oxidative phosphorylation were downregulated in SM5 compared with SM1. To conclude, appropriate protein levels improved the growth and flesh quality by regulating muscle antioxidant capacity and gene expression of myhcs and fat metabolism-related signaling molecules.
Collapse
Affiliation(s)
- Xiaoyu Wang
- College of Fisheries, Huazhong Agricultural University, Wuhan, China.,Engineering Research Center of Green Development for Conventional Aquatic Biological Industry in the Yangtze River Economic Belt, Ministry of Education, Wuhan, China.,Key Laboratory of Freshwater Animal Breeding, Ministry of Agriculture and Rural Affairs, Wuhan, China.,Hubei Provincial Engineering Laboratory for Pond Aquaculture, Wuhan, China
| | - Guoqing Liu
- College of Fisheries, Huazhong Agricultural University, Wuhan, China.,Engineering Research Center of Green Development for Conventional Aquatic Biological Industry in the Yangtze River Economic Belt, Ministry of Education, Wuhan, China.,Key Laboratory of Freshwater Animal Breeding, Ministry of Agriculture and Rural Affairs, Wuhan, China.,Hubei Provincial Engineering Laboratory for Pond Aquaculture, Wuhan, China
| | - Shouqi Xie
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, China
| | - Lei Pan
- Faculty of Resources and Environmental Science, Hubei University, Wuhan, China
| | - Qingsong Tan
- College of Fisheries, Huazhong Agricultural University, Wuhan, China.,Engineering Research Center of Green Development for Conventional Aquatic Biological Industry in the Yangtze River Economic Belt, Ministry of Education, Wuhan, China.,Key Laboratory of Freshwater Animal Breeding, Ministry of Agriculture and Rural Affairs, Wuhan, China.,Hubei Provincial Engineering Laboratory for Pond Aquaculture, Wuhan, China
| |
Collapse
|
19
|
Loumaye A, Lause P, Zhong X, Zimmers TA, Bindels LB, Thissen JP. Activin A Causes Muscle Atrophy through MEF2C-Dependent Impaired Myogenesis. Cells 2022; 11:cells11071119. [PMID: 35406681 PMCID: PMC8997966 DOI: 10.3390/cells11071119] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2022] [Revised: 03/18/2022] [Accepted: 03/22/2022] [Indexed: 12/05/2022] Open
Abstract
Activin A (ActA) is considered to play a major role in cancer-induced cachexia (CC). Indeed, circulating ActA levels are elevated and predict survival in patients with CC. However, the mechanisms by which ActA mediates CC development and in particular skeletal muscle (SM) atrophy in humans are not yet fully understood. In this work, we aimed to investigate the effects of ActA on human SM and in mouse models of CC. We used a model of human muscle cells in culture to explore how ActA acts towards human SM. In this model, recombinant ActA induced myotube atrophy associated with the decline of MyHC-β/slow, the main myosin isoform in human muscle cells studied. Moreover, ActA inhibited the expression and activity of MEF2C, the transcription factor regulating MYH7, the gene which codes for MyHC-β/slow. This decrease in MEF2C was involved in the decline of MyHC-β/slow expression, since inhibition of MEF2C by a siRNA leads to the decrease in MyHC-β/slow expression. The relevance of this ActA/MEF2C pathway in vivo was supported by the parallel decline of MEF2C expression and SM mass, which are both blunted by ActA inhibition, in animal models of CC. In this work, we showed that ActA is a potent negative regulator of SM mass by inhibiting MyHC-β/slow synthesis through downregulation of MEF2C. This observation highlights a novel interaction between ActA signaling and MEF2C transcriptional activity which contributes to SM atrophy in CC models.
Collapse
Affiliation(s)
- Audrey Loumaye
- Pole of Endocrinology, Diabetology and Nutrition, Institute of Experimental and Clinical Research, Université Catholique de Louvain, 1200 Brussels, Belgium; (P.L.); (J.-P.T.)
- Department of Endocrinology and Nutrition, Cliniques Universitaires Saint-Luc, 1200 Brussels, Belgium
- Correspondence: ; Tel.: +32-2-764-6001
| | - Pascale Lause
- Pole of Endocrinology, Diabetology and Nutrition, Institute of Experimental and Clinical Research, Université Catholique de Louvain, 1200 Brussels, Belgium; (P.L.); (J.-P.T.)
| | - Xiaoling Zhong
- Department of Surgery, Indiana University School of Medicine, Indiana University Simon and Bren Comprehensive Cancer Center, Richard L. Roudebush Veterans Administration Medical Center, Indianapolis, IN 46202, USA; (X.Z.); (T.A.Z.)
- Research Service, Richard L. Roudebush Veterans Administration Medical Center, Indianapolis, IN 46202, USA
| | - Teresa A. Zimmers
- Department of Surgery, Indiana University School of Medicine, Indiana University Simon and Bren Comprehensive Cancer Center, Richard L. Roudebush Veterans Administration Medical Center, Indianapolis, IN 46202, USA; (X.Z.); (T.A.Z.)
- Research Service, Richard L. Roudebush Veterans Administration Medical Center, Indianapolis, IN 46202, USA
| | - Laure B. Bindels
- Metabolism and Nutrition Research Group, Louvain Drug Research Institute, Université Catholique de Louvain, 1200 Brussels, Belgium;
| | - Jean-Paul Thissen
- Pole of Endocrinology, Diabetology and Nutrition, Institute of Experimental and Clinical Research, Université Catholique de Louvain, 1200 Brussels, Belgium; (P.L.); (J.-P.T.)
- Department of Endocrinology and Nutrition, Cliniques Universitaires Saint-Luc, 1200 Brussels, Belgium
| |
Collapse
|
20
|
Yin D, Lin D, Xie Y, Gong A, Jiang P, Wu J. Neuregulin-1β Alleviates Sepsis-Induced Skeletal Muscle Atrophy by Inhibiting Autophagy via AKT/mTOR Signaling Pathway in Rats. Shock 2022; 57:397-407. [PMID: 34559744 DOI: 10.1097/shk.0000000000001860] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
BACKGROUND Several studies have shown that excessive protein degradation is a major cause of skeletal muscle atrophy induced by sepsis, and autophagy is the main pathway participating in protein degradation. However, the role of autophagy in sepsis is still controversial. Previously, we found that neuregulin-1β (NRG-1β) alleviated sepsis-induced diaphragm atrophy through the phosphatidylinositol-3 kinase signaling pathway. Akt/mechanistic target of rapamycin (mTOR) is a classic signaling pathway to regulate autophagy, which maintains intracellular homeostasis. This study aimed to investigate whether NRG-1β could alleviate sepsis-induced skeletal muscle atrophy by regulating autophagy. METHODS L6 rat myoblast cells were differentiated using 2% fetal bovine serum into myotubes, which were divided into four groups: Con group treated with normal serum; Sep group treated with septic serum to form a sepsis cell model; septic serum + NRG-1β (SN) group treated with septic serum for 24 h followed by injection with NRG-1β and incubation for another 48 h; and serum+NRG-1β+LY294002 group, in which the PI3K inhibitor LY294002 was added 30 min before NRG-1β, and other treatments were similar to those in SN group. Effects of NRG-1β were also evaluated in vivo using Sprague-Dawley (SD) rats, in which sepsis was induced by cecal ligation and puncture (CLP). RESULTS In L6 myotubes treated with septic serum, the expression of autophagy-related proteins UNC-51 like kinase 1, p-Beclin-1, and Beclin-1, and the ratio of LC3B II/I were highly increased, while protein p62 expression was decreased, indicating that autophagy was excessively activated. Moreover, NRG-1 expression was decreased, as detected by confocal immunofluorescence and western blotting. Upon exogenous addition of NRG-1β, autophagy was inhibited by the activation of Akt/mTOR signaling pathway, and cell viability was also increased. These effects disappeared in the presence of LY294002. In SD rats, sepsis was induced by CLP. NRG-1β was shown to inhibit autophagy in these rats via the Akt/mTOR pathway, leading to increased body weight of the septic SD rats and alleviation of atrophy of the tibialis anterior muscle. CONCLUSION NRG-1β could alleviate sepsis-induced skeletal muscle atrophy by inhibiting autophagy via the AKT/mTOR signaling pathway.
Collapse
Affiliation(s)
- Dandan Yin
- Department of Anesthesiology, Affiliated Hospital of Jiangsu University, Zhenjiang City, Jiangsu Province, China
| | - Dawei Lin
- Department of Anesthesiology, Affiliated Hospital of Jiangsu University, Zhenjiang City, Jiangsu Province, China
| | - Yunbin Xie
- Department of Anesthesiology, The First People's Hospital of Changzhou, Changzhou City, Jiangsu Province, China
| | - Aihua Gong
- School of Medicine, Jiangsu University, Zhenjiang City, Jiangsu Province, China
| | - Peng Jiang
- Department of Anesthesiology, Affiliated Hospital of Jiangsu University, Zhenjiang City, Jiangsu Province, China
| | - Jin Wu
- Department of Anesthesiology, Affiliated Hospital of Jiangsu University, Zhenjiang City, Jiangsu Province, China
| |
Collapse
|
21
|
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.
Collapse
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
| |
Collapse
|
22
|
Genome-wide identification of enhancers and transcription factors regulating the myogenic differentiation of bovine satellite cells. BMC Genomics 2021; 22:901. [PMID: 34915843 PMCID: PMC8675486 DOI: 10.1186/s12864-021-08224-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2021] [Accepted: 11/29/2021] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Satellite cells are the myogenic precursor cells in adult skeletal muscle. The objective of this study was to identify enhancers and transcription factors that regulate gene expression during the differentiation of bovine satellite cells into myotubes. RESULTS Chromatin immunoprecipitation followed by deep sequencing (ChIP-seq) was performed to identify genomic regions where lysine 27 of H3 histone is acetylated (H3K27ac), i.e., active enhancers, from bovine satellite cells before and during differentiation into myotubes. A total of 19,027 and 47,669 H3K27ac-marked enhancers were consistently identified from two biological replicates of before- and during-differentiation bovine satellite cells, respectively. Of these enhancers, 5882 were specific to before-differentiation, 35,723 to during-differentiation, and 13,199 common to before- and during-differentiation bovine satellite cells. Whereas most of the before- or during-differentiation-specific H3K27ac-marked enhancers were located distally to the transcription start site, the enhancers common to before- and during-differentiation were located both distally and proximally to the transcription start site. The three sets of H3K27ac-marked enhancers were associated with functionally different genes and enriched with different transcription factor binding sites. Specifically, many of the H3K27ac-marked enhancers specific to during-differentiation bovine satellite cells were associated with genes involved in muscle structure and development, and were enriched with binding sites for the MyoD, AP-1, KLF, TEAD, and MEF2 families of transcription factors. A positive role was validated for Fos and FosB, two AP-1 family transcription factors, in the differentiation of bovine satellite cells into myotubes by siRNA-mediated knockdown. CONCLUSIONS Tens of thousands of H3K27ac-marked active enhancers have been identified from bovine satellite cells before or during differentiation. These enhancers contain binding sites not only for transcription factors whose role in satellite cell differentiation is well known but also for transcription factors whose role in satellite cell differentiation is unknown. These enhancers and transcription factors are valuable resources for understanding the complex mechanism that mediates gene expression during satellite cell differentiation. Because satellite cell differentiation is a key step in skeletal muscle growth, the enhancers, the transcription factors, and their target genes identified in this study are also valuable resources for identifying and interpreting skeletal muscle trait-associated DNA variants in cattle.
Collapse
|
23
|
Meyer MM, Johnson AK, Bobeck EA. Laser Environmental Enrichment and Spirulina Algae Improve Broiler Growth Performance and Alter Myogenic Gene Expression and pectoralis major Dimensions. FRONTIERS IN ANIMAL SCIENCE 2021. [DOI: 10.3389/fanim.2021.784294] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Sustainability in poultry production is evident in efforts to reduce inputs and a focus on bird welfare and livability. Dietary protein alternatives to traditional sources such as soybean meal aim to meet or exceed efficiency benchmarks and be cost-effective. Environmental enrichment encouraging activity may reduce the occurrence of the predominant breast muscle myopathy, woody breast (WB); interventions to minimize muscle damage and economic loss have yet to be established. The study objectives were to maintain or improve broiler performance and breast quality through environmental enrichment and partially replacing dietary soybean meal with Spirulina. Twelve hundred Ross 708 broilers were randomly assigned to enrichment (LASER; laser enrichment, or CON; no laser enrichment) and diet (algae; 2.5% Spirulina algae, or control) in a 2 × 2 factorial design for 49 days. The same 70 randomly selected birds were examined for contact dermatitis wk 1–6. Breast width was measured weekly on 200 growing broilers beginning on d22. On d42 and 49 slaughter, WB score was assigned using a tactile 0–3 scale and the right breast filet was weighed (n = 200). RNA isolated from 30 breast muscle samples each at d42 and 49 was analyzed using real-time qPCR. Laser enrichment increased body weight at all timepoints (d49: 0.148 kg, P < 0.001). Feed conversion ratio was improved in LASER-enriched birds by 3 points in the starter period (P = 0.003). Breast width was increased at all timepoints in LASER-enriched birds compared to CON (d49: 0.47 cm, P < 0.001). Algae inclusion increased body weight at d28 (0.059 kg, P = 0.005). At d42, 12% more LASER-enriched WB scores were 0 (normal) compared to CON, and at d49, 15% more enriched scores were 0. At d42, 5% more algae-fed broiler scores were 0 compared to control. LASER-enriched broiler breast tissue showed upregulated expression of myogenin, muscle regulatory factor 4, insulin-like growth factor 1, and myostatin compared to CON (P < 0.01). Both laser enrichment and algae inclusion improved broiler performance without negatively impacting environmental or physiological outcomes. LASER enrichment decreased severity of WB score and positively shifted myogenic gene expression in the breast muscle at slaughter.
Collapse
|
24
|
Paramonova II, Vilchinskaya NA, Shenkman BS. HDAC4 Is Indispensable for Reduced Slow Myosin Expression at the Early Stage of Hindlimb Unloading in Rat Soleus Muscle. Pharmaceuticals (Basel) 2021; 14:ph14111167. [PMID: 34832949 PMCID: PMC8617770 DOI: 10.3390/ph14111167] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2021] [Revised: 11/05/2021] [Accepted: 11/13/2021] [Indexed: 11/16/2022] Open
Abstract
It is well known that reduced contractile activity of the main postural soleus muscle during long-term bedrest, immobilization, hindlimb unloading, and space flight leads to increased expression of fast isoforms and decreased expression of the slow isoform of myosin heavy chain (MyHC). The signaling cascade such as HDAC4/MEF2-D pathway is well-known to take part in regulating MyHC I gene expression. Earlier, we found a significant increase of HDAC4 in myonuclei due to AMPK dephosphorylation during 24 h of hindlimb unloading via hindlimb suspension (HU) and it had a significant impact on the expression of MyHC isoforms in rat soleus causing a decrease in MyHC I(β) pre-mRNA and mRNA expression as well as MyHC IIa mRNA expression. We hypothesized that dephosphorylated HDAC4 translocates into the nuclei and can lead to a reduced expression of slow MyHC. To test this hypothesis, Wistar rats were treated with HDAC4 inhibitor (Tasquinimod) for 7 days before HU as well as during 24 h of HU. We discovered that Tasquinimod treatment prevented a decrease in pre-mRNA expression of MyHC I. Furthermore, 24 h of hindlimb suspension resulted in HDAC4 nuclear accumulation of rat soleus but Tasquinimod pretreatment prevented this accumulation. The results of the study indicate that HDAC4 after 24 h of HU had a significant impact on the precursor MyHC I mRNA expression in rat soleus.
Collapse
|
25
|
Kostyuk SV, Proskurnina EV, Ershova ES, Kameneva LV, Malinovskaya EM, Savinova EA, Sergeeva VA, Umriukhin PE, Dolgikh OA, Khakina EA, Kraevaya OA, Troshin PA, Kutsev SI, Veiko NN. The Phosphonate Derivative of C 60 Fullerene Induces Differentiation towards the Myogenic Lineage in Human Adipose-Derived Mesenchymal Stem Cells. Int J Mol Sci 2021; 22:ijms22179284. [PMID: 34502190 PMCID: PMC8431706 DOI: 10.3390/ijms22179284] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2021] [Revised: 08/19/2021] [Accepted: 08/25/2021] [Indexed: 12/26/2022] Open
Abstract
Inductors of myogenic stem cell differentiation attract attention, as they can be used to treat myodystrophies and post-traumatic injuries. Functionalization of fullerenes makes it possible to obtain water-soluble derivatives with targeted biochemical activity. This study examined the effects of the phosphonate C60 fullerene derivatives on the expression of myogenic transcription factors and myogenic differentiation of human mesenchymal stem cells (MSCs). Uptake of the phosphonate C60 fullerene derivatives in human MSCs, intracellular ROS visualization, superoxide scavenging potential, and the expression of myogenic, adipogenic, and osteogenic differentiation genes were studied. The prolonged MSC incubation (within 7–14 days) with the C60 pentaphoshonate potassium salt promoted their differentiation towards the myogenic lineage. The transcription factors and gene expressions determining myogenic differentiation (MYOD1, MYOG, MYF5, and MRF4) increased, while the expression of osteogenic differentiation factors (BMP2, BMP4, RUNX2, SPP1, and OCN) and adipogenic differentiation factors (CEBPB, LPL, and AP2 (FABP4)) was reduced or did not change. The stimulation of autophagy may be one of the factors contributing to the increased expression of myogenic differentiation genes in MSCs. Autophagy may be caused by intracellular alkalosis and/or short-term intracellular oxidative stress.
Collapse
Affiliation(s)
- Svetlana V. Kostyuk
- Research Centre for Medical Genetics, ul. Moskvorechye 1, 115522 Moscow, Russia; (S.V.K.); (E.S.E.); (L.V.K.); (E.M.M.); (E.A.S.); (V.A.S.); (P.E.U.); (O.A.D.); (S.I.K.); (N.N.V.)
| | - Elena V. Proskurnina
- Research Centre for Medical Genetics, ul. Moskvorechye 1, 115522 Moscow, Russia; (S.V.K.); (E.S.E.); (L.V.K.); (E.M.M.); (E.A.S.); (V.A.S.); (P.E.U.); (O.A.D.); (S.I.K.); (N.N.V.)
- Correspondence:
| | - Elizaveta S. Ershova
- Research Centre for Medical Genetics, ul. Moskvorechye 1, 115522 Moscow, Russia; (S.V.K.); (E.S.E.); (L.V.K.); (E.M.M.); (E.A.S.); (V.A.S.); (P.E.U.); (O.A.D.); (S.I.K.); (N.N.V.)
| | - Larisa V. Kameneva
- Research Centre for Medical Genetics, ul. Moskvorechye 1, 115522 Moscow, Russia; (S.V.K.); (E.S.E.); (L.V.K.); (E.M.M.); (E.A.S.); (V.A.S.); (P.E.U.); (O.A.D.); (S.I.K.); (N.N.V.)
| | - Elena M. Malinovskaya
- Research Centre for Medical Genetics, ul. Moskvorechye 1, 115522 Moscow, Russia; (S.V.K.); (E.S.E.); (L.V.K.); (E.M.M.); (E.A.S.); (V.A.S.); (P.E.U.); (O.A.D.); (S.I.K.); (N.N.V.)
| | - Ekaterina A. Savinova
- Research Centre for Medical Genetics, ul. Moskvorechye 1, 115522 Moscow, Russia; (S.V.K.); (E.S.E.); (L.V.K.); (E.M.M.); (E.A.S.); (V.A.S.); (P.E.U.); (O.A.D.); (S.I.K.); (N.N.V.)
| | - Vasilina A. Sergeeva
- Research Centre for Medical Genetics, ul. Moskvorechye 1, 115522 Moscow, Russia; (S.V.K.); (E.S.E.); (L.V.K.); (E.M.M.); (E.A.S.); (V.A.S.); (P.E.U.); (O.A.D.); (S.I.K.); (N.N.V.)
| | - Pavel E. Umriukhin
- Research Centre for Medical Genetics, ul. Moskvorechye 1, 115522 Moscow, Russia; (S.V.K.); (E.S.E.); (L.V.K.); (E.M.M.); (E.A.S.); (V.A.S.); (P.E.U.); (O.A.D.); (S.I.K.); (N.N.V.)
- Department of Normal Physiology, I.M. Sechenov First Moscow State Medical University (Sechenov University) , Mohovaya Str. 11-4, 125009 Moscow, Russia
| | - Olga A. Dolgikh
- Research Centre for Medical Genetics, ul. Moskvorechye 1, 115522 Moscow, Russia; (S.V.K.); (E.S.E.); (L.V.K.); (E.M.M.); (E.A.S.); (V.A.S.); (P.E.U.); (O.A.D.); (S.I.K.); (N.N.V.)
| | - Ekaterina A. Khakina
- A.N. Nesmeyanov Institute of Organoelement Compounds of Russian Academy of Sciences, Vavylova St. 28, B-334, 119991 Moscow, Russia;
| | - Olga A. Kraevaya
- Institute of Problems of Chemical Physics of Russian Academy of Sciences, Semenov Prospect 1, 142432 Chernogolovka (Moscow Region), Russia; (O.A.K.); (P.A.T.)
| | - Pavel A. Troshin
- Institute of Problems of Chemical Physics of Russian Academy of Sciences, Semenov Prospect 1, 142432 Chernogolovka (Moscow Region), Russia; (O.A.K.); (P.A.T.)
| | - Sergey I. Kutsev
- Research Centre for Medical Genetics, ul. Moskvorechye 1, 115522 Moscow, Russia; (S.V.K.); (E.S.E.); (L.V.K.); (E.M.M.); (E.A.S.); (V.A.S.); (P.E.U.); (O.A.D.); (S.I.K.); (N.N.V.)
| | - Natalia N. Veiko
- Research Centre for Medical Genetics, ul. Moskvorechye 1, 115522 Moscow, Russia; (S.V.K.); (E.S.E.); (L.V.K.); (E.M.M.); (E.A.S.); (V.A.S.); (P.E.U.); (O.A.D.); (S.I.K.); (N.N.V.)
| |
Collapse
|
26
|
Bovine Satellite Cells Isolated after 2 and 5 Days of Tissue Storage Maintain the Proliferative and Myogenic Capacity Needed for Cultured Meat Production. Int J Mol Sci 2021; 22:ijms22168376. [PMID: 34445082 PMCID: PMC8395070 DOI: 10.3390/ijms22168376] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2021] [Revised: 07/26/2021] [Accepted: 07/28/2021] [Indexed: 01/03/2023] Open
Abstract
Cultured meat is an emerging alternative food technology which aims to deliver a more ethical, sustainable, and healthy muscle-tissue-derived food item compared to conventional meat. As start-up companies are rapidly forming and accelerating this technology, many aspects of this multi-faceted science have still not been investigated in academia. In this study, we investigated if bovine satellite cells with the ability to proliferate and undergo myogenic differentiation could be isolated after extended tissue storage, for the purpose of increasing the practicality for cultured meat production. Proliferation of bovine satellite cells isolated on the day of arrival or after 2 and 5 days of tissue storage were analyzed by metabolic and DNA-based assays, while their myogenic characteristics were investigated using RT-qPCR and immunofluorescence. Extended tissue storage up to 5 days did not negatively affect proliferation nor the ability to undergo fusion and create myosin heavy chain-positive myotubes. The expression patterns of myogenic and muscle-specific genes were also not affected after tissue storage. In fact, the data indicated a positive trend in terms of myogenic potential after tissue storage, although it was non-significant. These results suggest that the timeframe of which viable myogenic satellite cells can be isolated and used for cultured meat production can be greatly extended by proper tissue storage.
Collapse
|
27
|
Wen Y, Englund DA, Peck BD, Murach KA, McCarthy JJ, Peterson CA. Myonuclear transcriptional dynamics in response to exercise following satellite cell depletion. iScience 2021; 24:102838. [PMID: 34368654 PMCID: PMC8326190 DOI: 10.1016/j.isci.2021.102838] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2021] [Revised: 04/15/2021] [Accepted: 07/08/2021] [Indexed: 02/08/2023] Open
Abstract
Skeletal muscle is composed of post-mitotic myofibers that form a syncytium containing hundreds of myonuclei. Using a progressive exercise training model in the mouse and single nucleus RNA-sequencing (snRNA-seq) for high-resolution characterization of myonuclear transcription, we show myonuclear functional specialization in muscle. After 4 weeks of exercise training, snRNA-seq reveals that resident muscle stem cells, or satellite cells, are activated with acute exercise but demonstrate limited lineage progression while contributing to muscle adaptation. In the absence of satellite cells, a portion of nuclei demonstrates divergent transcriptional dynamics associated with mixed-fate identities compared with satellite cell replete muscles. These data provide a compendium of information about how satellite cells influence myonuclear transcription in response to exercise.
Collapse
Affiliation(s)
- Yuan Wen
- Department of Physical Therapy, College of Health Sciences, University of Kentucky, 900 S. Limestone, Lexington, KY 40536-0200, USA.,Center for Muscle Biology, University of Kentucky, Lexington, KY, USA
| | - Davis A Englund
- Department of Physical Therapy, College of Health Sciences, University of Kentucky, 900 S. Limestone, Lexington, KY 40536-0200, USA.,Center for Muscle Biology, University of Kentucky, Lexington, KY, USA
| | - Bailey D Peck
- Department of Physical Therapy, College of Health Sciences, University of Kentucky, 900 S. Limestone, Lexington, KY 40536-0200, USA.,Center for Muscle Biology, University of Kentucky, Lexington, KY, USA
| | - Kevin A Murach
- Department of Physical Therapy, College of Health Sciences, University of Kentucky, 900 S. Limestone, Lexington, KY 40536-0200, USA.,Center for Muscle Biology, University of Kentucky, Lexington, KY, USA
| | - John J McCarthy
- Center for Muscle Biology, University of Kentucky, Lexington, KY, USA.,Department of Physiology, College of Medicine, University of Kentucky, Lexington, KY, USA
| | - Charlotte A Peterson
- Department of Physical Therapy, College of Health Sciences, University of Kentucky, 900 S. Limestone, Lexington, KY 40536-0200, USA.,Center for Muscle Biology, University of Kentucky, Lexington, KY, USA
| |
Collapse
|
28
|
Li M, Tang X, You W, Wang Y, Chen Y, Liu Y, Yuan H, Gao C, Chen X, Xiao Z, Ouyang H, Pang D. HMEJ-mediated site-specific integration of a myostatin inhibitor increases skeletal muscle mass in porcine. MOLECULAR THERAPY. NUCLEIC ACIDS 2021; 26:49-62. [PMID: 34513293 PMCID: PMC8411015 DOI: 10.1016/j.omtn.2021.06.011] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/23/2020] [Accepted: 06/09/2021] [Indexed: 01/27/2023]
Abstract
As a robust antagonist of myostatin (MSTN), follistatin (FST) is an important regulator of skeletal muscle development, and the delivery of FST to muscle tissue represents a potential therapeutic strategy for muscular dystrophies. The N terminus and FSI domain of FST are the functional domains for MSTN binding. Here, we aimed to achieve site-specific integration of FSI-I-I, including the signal peptide, N terminus, and three FSI domains, into the last codon of the porcine MSTN gene using a homology-mediated end joining (HMEJ)-based strategy mediated by CRISPR-Cas9. Based on somatic cell nuclear transfer (SCNT) technology, we successfully obtained FSI-I-I knockin pigs. H&E staining of longissimus dorsi and gastrocnemius cross-sections showed larger myofiber sizes in FSI-I-I knockin pigs than in controls. Moreover, the Smad and Erk pathways were inhibited, whereas the PI3k/Akt pathway was activated in FSI-I-I knockin pigs. In addition, the levels of MyoD, Myf5, and MyoG transcription were upregulated while that of MRF4 was downregulated in FSI-I-I knockin pigs. These results indicate that the FSI-I-I gene mediates skeletal muscle hypertrophy through an MSTN-related signaling pathway and the expression of myogenic regulatory factors. Overall, FSI-I-I knockin pigs with hypertrophic muscle tissue hold great promise as a therapeutic model for human muscular dystrophies.
Collapse
Affiliation(s)
- Mengjing Li
- Key Laboratory of Zoonosis Research, Ministry of Education, Jilin Provincial Key Laboratory of Animal Embryo Engineering, College of Animal Sciences, Jilin University, 130062 Changchun, Jilin Province, People’s Republic of China
| | - Xiaochun Tang
- Key Laboratory of Zoonosis Research, Ministry of Education, Jilin Provincial Key Laboratory of Animal Embryo Engineering, College of Animal Sciences, Jilin University, 130062 Changchun, Jilin Province, People’s Republic of China
| | - Wenni You
- Key Laboratory of Zoonosis Research, Ministry of Education, Jilin Provincial Key Laboratory of Animal Embryo Engineering, College of Animal Sciences, Jilin University, 130062 Changchun, Jilin Province, People’s Republic of China
| | - Yanbing Wang
- Key Laboratory of Zoonosis Research, Ministry of Education, Jilin Provincial Key Laboratory of Animal Embryo Engineering, College of Animal Sciences, Jilin University, 130062 Changchun, Jilin Province, People’s Republic of China
| | - Yiwu Chen
- Key Laboratory of Zoonosis Research, Ministry of Education, Jilin Provincial Key Laboratory of Animal Embryo Engineering, College of Animal Sciences, Jilin University, 130062 Changchun, Jilin Province, People’s Republic of China
| | - Ying Liu
- Key Laboratory of Zoonosis Research, Ministry of Education, Jilin Provincial Key Laboratory of Animal Embryo Engineering, College of Animal Sciences, Jilin University, 130062 Changchun, Jilin Province, People’s Republic of China
| | - Hongming Yuan
- Key Laboratory of Zoonosis Research, Ministry of Education, Jilin Provincial Key Laboratory of Animal Embryo Engineering, College of Animal Sciences, Jilin University, 130062 Changchun, Jilin Province, People’s Republic of China
| | - Chuang Gao
- Key Laboratory of Zoonosis Research, Ministry of Education, Jilin Provincial Key Laboratory of Animal Embryo Engineering, College of Animal Sciences, Jilin University, 130062 Changchun, Jilin Province, People’s Republic of China
| | - Xue Chen
- Key Laboratory of Zoonosis Research, Ministry of Education, Jilin Provincial Key Laboratory of Animal Embryo Engineering, College of Animal Sciences, Jilin University, 130062 Changchun, Jilin Province, People’s Republic of China
| | - Zhiwei Xiao
- Key Laboratory of Zoonosis Research, Ministry of Education, Jilin Provincial Key Laboratory of Animal Embryo Engineering, College of Animal Sciences, Jilin University, 130062 Changchun, Jilin Province, People’s Republic of China
| | - Hongsheng Ouyang
- Key Laboratory of Zoonosis Research, Ministry of Education, Jilin Provincial Key Laboratory of Animal Embryo Engineering, College of Animal Sciences, Jilin University, 130062 Changchun, Jilin Province, People’s Republic of China,Corresponding author: Hongsheng Ouyang, Key Laboratory of Zoonosis Research, Ministry of Education, Jilin Provincial Key Laboratory of Animal Embryo Engineering, College of Animal Sciences, Jilin University, 130062 Changchun, Jilin Province, People’s Republic of China.
| | - Daxin Pang
- Key Laboratory of Zoonosis Research, Ministry of Education, Jilin Provincial Key Laboratory of Animal Embryo Engineering, College of Animal Sciences, Jilin University, 130062 Changchun, Jilin Province, People’s Republic of China,Corresponding author: Daxin Pang, Key Laboratory of Zoonosis Research, Ministry of Education, Jilin Provincial Key Laboratory of Animal Embryo Engineering, College of Animal Sciences, Jilin University, 130062 Changchun, Jilin Province, People’s Republic of China.
| |
Collapse
|
29
|
Qiu J, Wu L, Chang Y, Sun H, Sun J. Alternative splicing transitions associate with emerging atrophy phenotype during denervation-induced skeletal muscle atrophy. J Cell Physiol 2021; 236:4496-4514. [PMID: 33319931 DOI: 10.1002/jcp.30167] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2020] [Revised: 10/23/2020] [Accepted: 11/05/2020] [Indexed: 12/25/2022]
Abstract
Alternative splicing (AS) presents a key posttranscriptional regulatory mechanism associated with numerous physiological processes. However, little is known about its role in skeletal muscle atrophy. In this study, we used a rat model of denervated skeletal muscle atrophy and performed RNA-sequencing to analyze transcriptome profiling of tibialis anterior muscle at multiple time points following denervation. We found that AS is a novel mechanism involving muscle atrophy, which is independent changes at the transcript level. Bioinformatics analysis further revealed that AS transitions are associated with the appearance of the atrophic phenotype. Moreover, we found that the inclusion of multiple highly conserved exons of Obscn markedly increased at 3 days after denervation. In addition, we confirmed that this newly transcript inhibited C2C12 cell proliferation and exacerbated myotube atrophy. Finally, our study revealed that a large number of RNA-binding proteins were upregulated when the atrophy phenotype appeared. Our data emphasize the importance of AS in this process.
Collapse
Affiliation(s)
- Jiaying Qiu
- Department of Prenatal Screening and Diagnosis Center, Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Affiliated Maternity and Child Health Care Hospital of Nantong University, Nantong University, Nantong, Jiangsu, China
| | - Liucheng Wu
- Laboratory Animal Center, Nantong University, Nantong, China
| | - Yan Chang
- School of Life Sciences, Nantong University, Nantong, Jiangsu, China
| | - Hualin Sun
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Jiangsu Clinical Medicine Center of Tissue Engineering and Nerve Injury Repair, Co-Innovation Center of Neuroregeneration, Nantong University, Nantong, Jiangsu, China
| | - Junjie Sun
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Jiangsu Clinical Medicine Center of Tissue Engineering and Nerve Injury Repair, Co-Innovation Center of Neuroregeneration, Nantong University, Nantong, Jiangsu, China
| |
Collapse
|
30
|
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.
Collapse
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.
| |
Collapse
|
31
|
Kraevaya OA, Novikov AV, Shestakov AF, Ershova ES, Savinova EA, Kameneva LV, Veiko NN, Schols D, Balzarini J, Kostyuk SV, Troshin PA. Water-soluble fullerene-based nanostructures with promising antiviral and myogenic activity. Chem Commun (Camb) 2021; 56:10203-10206. [PMID: 32748905 DOI: 10.1039/d0cc03928d] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Here we report a straightforward method for the synthesis of a water-soluble C60 fullerene derivative decorated with five residues of phosphonic acid. Self-assembly of the synthesized compound in aqueous solution leads to the formation of nanostructures with unprecedented myogenic and antiviral activity.
Collapse
Affiliation(s)
- Olga A Kraevaya
- Skolkovo Institute of Science and Technology, Nobel St. 3, Moscow, 143026, Russia. and IPCP RAS, Semenov Prospect 1, Chernogolovka, 142432, Russia
| | - Artem V Novikov
- Skolkovo Institute of Science and Technology, Nobel St. 3, Moscow, 143026, Russia. and IPCP RAS, Semenov Prospect 1, Chernogolovka, 142432, Russia
| | - Alexander F Shestakov
- IPCP RAS, Semenov Prospect 1, Chernogolovka, 142432, Russia and Department of Physical and Chemical Engineering, Lomonosov Moscow State University, 115478, Moscow, Russia
| | - Elizaveta S Ershova
- Research Centre for Medical Genetics RAMS, Moskvorech'e St. 1, Moscow, 115478, Russia
| | - Ekaterina A Savinova
- Research Centre for Medical Genetics RAMS, Moskvorech'e St. 1, Moscow, 115478, Russia
| | - Larisa V Kameneva
- Research Centre for Medical Genetics RAMS, Moskvorech'e St. 1, Moscow, 115478, Russia
| | - Nataliya N Veiko
- Research Centre for Medical Genetics RAMS, Moskvorech'e St. 1, Moscow, 115478, Russia
| | - Dominique Schols
- Rega Institute for Medical Research, KU Leuven, Herestraat 49, 3000, Leuven, Belgium
| | - Jan Balzarini
- Rega Institute for Medical Research, KU Leuven, Herestraat 49, 3000, Leuven, Belgium
| | - Svetlana V Kostyuk
- Research Centre for Medical Genetics RAMS, Moskvorech'e St. 1, Moscow, 115478, Russia
| | - Pavel A Troshin
- Skolkovo Institute of Science and Technology, Nobel St. 3, Moscow, 143026, Russia. and IPCP RAS, Semenov Prospect 1, Chernogolovka, 142432, Russia
| |
Collapse
|
32
|
Husseiny WA, Hassanin AAI, El Nabtiti AAS, Khalil K, Elaswad A. Silver Nanoparticles as Modulators of Myogenesis-Related Gene Expression in Chicken Embryos. Genes (Basel) 2021; 12:genes12050629. [PMID: 33922304 PMCID: PMC8146831 DOI: 10.3390/genes12050629] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2021] [Revised: 04/03/2021] [Accepted: 04/06/2021] [Indexed: 11/21/2022] Open
Abstract
The present study was conducted to investigate the effects of colloidal nanoparticles of silver (Nano-Ag) on the expression of myogenesis-related genes in chicken embryos. The investigated genes included the members of the myogenic regulatory factors family (MRFs) and myocyte enhancer factor 2A (MEF2A) genes. A total of 200 fertilized broiler eggs (Indian River) were randomly distributed into four groups; non-injected control, injected control with placebo, treatment I in ovo injected with 20 ppm Nano-Ag, and treatment II in ovo injected with 40 ppm Nano-Ag. The eggs were then incubated for 21 days at the optimum temperature and humidity conditions. Breast muscle tissues were collected at the 5th, 8th, and 18th days of the incubation period. The mRNA expression of myogenic determination factor 1 (MYOD1), myogenic factor 5 (MYF5), myogenic factor 6 (MYF6), myogenin (MYOG), and MEF2A was measured at the three sampling points using real-time quantitative PCR, while MYOD1 protein expression was evaluated on day 18 using western blot. Breast muscle tissues were histologically examined on day 18 to detect the changes at the cellular level. Our results indicate that myogenesis was enhanced with the low concentration (20 ppm) of Nano-Ag due to the higher expression of MYOD1, MYF5, and MYF6 at the transcriptional level and MYOD1 at the translational level. Moreover, histological analysis revealed the presence of hyperplasia (31.4% more muscle fibers) in treatment I (injected with 20 ppm). Our findings indicate that in ovo injection of 20 ppm Nano-Ag enhances the development of muscles in chicken embryos compared with the 40-ppm dosage and provide crucial information for the use of silver nanoparticles in poultry production.
Collapse
Affiliation(s)
- Walaa A. Husseiny
- Department of Animal Wealth Development, Faculty of Veterinary Medicine, Suez Canal University, Ismailia 41522, Egypt; (A.A.I.H.); (A.A.S.E.N.); (A.E.)
- Correspondence: ; Tel.: +20-1003731786
| | - Abeer A. I. Hassanin
- Department of Animal Wealth Development, Faculty of Veterinary Medicine, Suez Canal University, Ismailia 41522, Egypt; (A.A.I.H.); (A.A.S.E.N.); (A.E.)
| | - Adel A. S. El Nabtiti
- Department of Animal Wealth Development, Faculty of Veterinary Medicine, Suez Canal University, Ismailia 41522, Egypt; (A.A.I.H.); (A.A.S.E.N.); (A.E.)
| | - Karim Khalil
- Anatomy and Embryology Department, Faculty of Veterinary Medicine, Cairo University, Giza 12211, Egypt;
| | - Ahmed Elaswad
- Department of Animal Wealth Development, Faculty of Veterinary Medicine, Suez Canal University, Ismailia 41522, Egypt; (A.A.I.H.); (A.A.S.E.N.); (A.E.)
| |
Collapse
|
33
|
Hitachi K, Nakatani M, Kiyofuji Y, Inagaki H, Kurahashi H, Tsuchida K. An Analysis of Differentially Expressed Coding and Long Non-Coding RNAs in Multiple Models of Skeletal Muscle Atrophy. Int J Mol Sci 2021; 22:ijms22052558. [PMID: 33806354 PMCID: PMC7961583 DOI: 10.3390/ijms22052558] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2021] [Revised: 02/26/2021] [Accepted: 02/26/2021] [Indexed: 12/16/2022] Open
Abstract
The loss of skeletal muscle mass (muscle atrophy or wasting) caused by aging, diseases, and injury decreases quality of life, survival rates, and healthy life expectancy in humans. Although long non-coding RNAs (lncRNAs) have been implicated in skeletal muscle formation and differentiation, their precise roles in muscle atrophy remain unclear. In this study, we used RNA-sequencing (RNA-Seq) to examine changes in the expression of lncRNAs in four muscle atrophy conditions (denervation, casting, fasting, and cancer cachexia) in mice. We successfully identified 33 annotated lncRNAs and 18 novel lncRNAs with common expression changes in all four muscle atrophy conditions. Furthermore, an analysis of lncRNA–mRNA correlations revealed that several lncRNAs affected small molecule biosynthetic processes during muscle atrophy. These results provide novel insights into the lncRNA-mediated regulatory mechanism underlying muscle atrophy and may be useful for the identification of promising therapeutic targets.
Collapse
Affiliation(s)
- Keisuke Hitachi
- Division for Therapies against Intractable Diseases, Institute for Comprehensive Medical Science (ICMS), Fujita Health University, Toyoake 470-1192, Japan; (K.H.); (M.N.); (Y.K.)
| | - Masashi Nakatani
- Division for Therapies against Intractable Diseases, Institute for Comprehensive Medical Science (ICMS), Fujita Health University, Toyoake 470-1192, Japan; (K.H.); (M.N.); (Y.K.)
- Faculty of Rehabilitation and Care, Seijoh University, Tokai 476-0014, Japan
| | - Yuri Kiyofuji
- Division for Therapies against Intractable Diseases, Institute for Comprehensive Medical Science (ICMS), Fujita Health University, Toyoake 470-1192, Japan; (K.H.); (M.N.); (Y.K.)
| | - Hidehito Inagaki
- Genome and Transcriptome Analysis Center, Fujita Health University, Toyoake 470-1192, Japan; (H.I.); (H.K.)
- Division of Molecular Genetics, Institute for Comprehensive Medical Science (ICMS), Fujita Health University, Toyoake 470-1192, Japan
| | - Hiroki Kurahashi
- Genome and Transcriptome Analysis Center, Fujita Health University, Toyoake 470-1192, Japan; (H.I.); (H.K.)
- Division of Molecular Genetics, Institute for Comprehensive Medical Science (ICMS), Fujita Health University, Toyoake 470-1192, Japan
| | - Kunihiro Tsuchida
- Division for Therapies against Intractable Diseases, Institute for Comprehensive Medical Science (ICMS), Fujita Health University, Toyoake 470-1192, Japan; (K.H.); (M.N.); (Y.K.)
- Correspondence: ; Tel.: +81-(562)-93-9384
| |
Collapse
|
34
|
Schiaffino S, Reggiani C, Akimoto T, Blaauw B. Molecular Mechanisms of Skeletal Muscle Hypertrophy. J Neuromuscul Dis 2021; 8:169-183. [PMID: 33216041 PMCID: PMC8075408 DOI: 10.3233/jnd-200568] [Citation(s) in RCA: 45] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Skeletal muscle hypertrophy can be induced by hormones and growth factors acting directly as positive regulators of muscle growth or indirectly by neutralizing negative regulators, and by mechanical signals mediating the effect of resistance exercise. Muscle growth during hypertrophy is controlled at the translational level, through the stimulation of protein synthesis, and at the transcriptional level, through the activation of ribosomal RNAs and muscle-specific genes. mTORC1 has a central role in the regulation of both protein synthesis and ribosomal biogenesis. Several transcription factors and co-activators, including MEF2, SRF, PGC-1α4, and YAP promote the growth of the myofibers. Satellite cell proliferation and fusion is involved in some but not all muscle hypertrophy models.
Collapse
Affiliation(s)
| | - Carlo Reggiani
- Department of Biomedical Sciences, University of Padova, Italy.,Science and Research Centre Koper, Institute for Kinesiology Research, Koper, Slovenia
| | | | - Bert Blaauw
- Venetian Institute of Molecular Medicine, Padova, Italy.,Department of Biomedical Sciences, University of Padova, Italy
| |
Collapse
|
35
|
Steinert ND, Potts GK, Wilson GM, Klamen AM, Lin KH, Hermanson JB, McNally RM, Coon JJ, Hornberger TA. Mapping of the contraction-induced phosphoproteome identifies TRIM28 as a significant regulator of skeletal muscle size and function. Cell Rep 2021; 34:108796. [PMID: 33657380 PMCID: PMC7967290 DOI: 10.1016/j.celrep.2021.108796] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2020] [Revised: 01/11/2021] [Accepted: 02/05/2021] [Indexed: 12/25/2022] Open
Abstract
Mechanical signals, such as those evoked by maximal-intensity contractions (MICs), can induce an increase in muscle mass. Rapamycin-sensitive signaling events are widely implicated in the regulation of this process; however, recent studies indicate that rapamycin-insensitive signaling events are also involved. Thus, to identify these events, we generate a map of the MIC-regulated and rapamycin-sensitive phosphoproteome. In total, we quantify more than 10,000 unique phosphorylation sites and find that more than 2,000 of these sites are significantly affected by MICs, but remarkably, only 38 of the MIC-regulated events are mediated through a rapamycin-sensitive mechanism. Further interrogation of the rapamycin-insensitive phosphorylation events identifies the S473 residue on Tripartite Motif-Containing 28 (TRIM28) as one of the most robust MIC-regulated phosphorylation sites, and extensive follow-up studies suggest that TRIM28 significantly contributes to the homeostatic regulation of muscle size and function as well as the hypertrophy that occurs in response to increased mechanical loading.
Collapse
Affiliation(s)
- Nathaniel D Steinert
- Department of Comparative Biosciences, University of Wisconsin-Madison, Madison, WI, USA; School of Veterinary Medicine, University of Wisconsin-Madison, Madison, WI, USA
| | - Gregory K Potts
- Department of Chemistry, University of Wisconsin-Madison, Madison, WI, USA
| | - Gary M Wilson
- Department of Chemistry, University of Wisconsin-Madison, Madison, WI, USA
| | - Amelia M Klamen
- Department of Comparative Biosciences, University of Wisconsin-Madison, Madison, WI, USA; School of Veterinary Medicine, University of Wisconsin-Madison, Madison, WI, USA
| | - Kuan-Hung Lin
- Department of Comparative Biosciences, University of Wisconsin-Madison, Madison, WI, USA; School of Veterinary Medicine, University of Wisconsin-Madison, Madison, WI, USA
| | - Jake B Hermanson
- Department of Comparative Biosciences, University of Wisconsin-Madison, Madison, WI, USA; School of Veterinary Medicine, University of Wisconsin-Madison, Madison, WI, USA
| | - Rachel M McNally
- Department of Comparative Biosciences, University of Wisconsin-Madison, Madison, WI, USA; School of Veterinary Medicine, University of Wisconsin-Madison, Madison, WI, USA
| | - Joshua J Coon
- Department of Chemistry, University of Wisconsin-Madison, Madison, WI, USA; Genome Center of Wisconsin, University of Wisconsin-Madison, Madison, WI, USA; Morgridge Institute for Research, Madison, WI, USA; Department of Biomolecular Chemistry, University of Wisconsin-Madison, Madison, WI, USA
| | - Troy A Hornberger
- Department of Comparative Biosciences, University of Wisconsin-Madison, Madison, WI, USA; School of Veterinary Medicine, University of Wisconsin-Madison, Madison, WI, USA.
| |
Collapse
|
36
|
Millward DJ. Interactions between Growth of Muscle and Stature: Mechanisms Involved and Their Nutritional Sensitivity to Dietary Protein: The Protein-Stat Revisited. Nutrients 2021; 13:729. [PMID: 33668846 PMCID: PMC7996181 DOI: 10.3390/nu13030729] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2021] [Revised: 02/15/2021] [Accepted: 02/22/2021] [Indexed: 02/07/2023] Open
Abstract
Childhood growth and its sensitivity to dietary protein is reviewed within a Protein-Stat model of growth regulation. The coordination of growth of muscle and stature is a combination of genetic programming, and of two-way mechanical interactions involving the mechanotransduction of muscle growth through stretching by bone length growth, the core Protein-Stat feature, and the strengthening of bone through muscle contraction via the mechanostat. Thus, growth in bone length is the initiating event and this is always observed. Endocrine and cellular mechanisms of growth in stature are reviewed in terms of the growth hormone-insulin like growth factor-1 (GH-IGF-1) and thyroid axes and the sex hormones, which together mediate endochondral ossification in the growth plate and bone lengthening. Cellular mechanisms of muscle growth during development are then reviewed identifying (a) the difficulties posed by the need to maintain its ultrastructure during myofibre hypertrophy within the extracellular matrix and the concept of muscle as concentric "bags" allowing growth to be conceived as bag enlargement and filling, (b) the cellular and molecular mechanisms involved in the mechanotransduction of satellite and mesenchymal stromal cells, to enable both connective tissue remodelling and provision of new myonuclei to aid myofibre hypertrophy and (c) the implications of myofibre hypertrophy for protein turnover within the myonuclear domain. Experimental data from rodent and avian animal models illustrate likely changes in DNA domain size and protein turnover during developmental and stretch-induced muscle growth and between different muscle fibre types. Growth of muscle in male rats during adulthood suggests that "bag enlargement" is achieved mainly through the action of mesenchymal stromal cells. Current understanding of the nutritional regulation of protein deposition in muscle, deriving from experimental studies in animals and human adults, is reviewed, identifying regulation by amino acids, insulin and myofibre volume changes acting to increase both ribosomal capacity and efficiency of muscle protein synthesis via the mechanistic target of rapamycin complex 1 (mTORC1) and the phenomenon of a "bag-full" inhibitory signal has been identified in human skeletal muscle. The final section deals with the nutritional sensitivity of growth of muscle and stature to dietary protein in children. Growth in length/height as a function of dietary protein intake is described in the context of the breastfed child as the normative growth model, and the "Early Protein Hypothesis" linking high protein intakes in infancy to later adiposity. The extensive paediatric studies on serum IGF-1 and child growth are reviewed but their clinical relevance is of limited value for understanding growth regulation; a role in energy metabolism and homeostasis, acting with insulin to mediate adiposity, is probably more important. Information on the influence of dietary protein on muscle mass per se as opposed to lean body mass is limited but suggests that increased protein intake in children is unable to promote muscle growth in excess of that linked to genotypic growth in length/height. One possible exception is milk protein intake, which cohort and cross-cultural studies suggest can increase height and associated muscle growth, although such effects have yet to be demonstrated by randomised controlled trials.
Collapse
Affiliation(s)
- D Joe Millward
- Department of Nutritional Sciences, Faculty of Health and Medical Sciences, University of Surrey, Guildford GU2 7XH, UK
| |
Collapse
|
37
|
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.
Collapse
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
| |
Collapse
|
38
|
Long DE, Peck BD, Tuggle SC, Villasante Tezanos AG, Windham ST, Bamman MM, Kern PA, Peterson CA, Walton RG. Associations of muscle lipid content with physical function and resistance training outcomes in older adults: altered responses with metformin. GeroScience 2021; 43:629-644. [PMID: 33462708 PMCID: PMC8110673 DOI: 10.1007/s11357-020-00315-9] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2020] [Accepted: 12/10/2020] [Indexed: 12/20/2022] Open
Abstract
Preserving muscle mass and strength is critical for long-term health and longevity. Age-related muscle lipid accumulation has been shown to be detrimental to muscle health. In healthy older individuals, we sought to determine whether muscle lipid content, determined from computed tomography, is associated with self-reported physical function, laboratory-measured performance, and the response to progressive resistance training (PRT), and how metformin may alter these responses (N = 46 placebo, 48 metformin). Using multiple linear regression models adjusted for confounders in a large cohort, we show that intermuscular adipose tissue (IMAT) was not associated with baseline function or response to PRT, contrary to previous reports. On the other hand, thigh muscle density (TMD), as an indicator of intra- and extramyocellular lipid (IMCL and EMCL), remained strongly and independently positively associated with physical function and performance following adjustment. Baseline TMD was inversely associated with gains in strength, independent of muscle mass. Percent change in TMD was positively associated with improved chair stand and increased type II fiber frequency but was not associated with muscle hypertrophy or overall strength gain following PRT. For the first time, we show that metformin use during PRT blunted density and strength gains by inhibiting fiber type switching primarily in those with low baseline TMD. These results indicate that participants with higher muscle lipid content derive the most performance benefit from PRT. Our results further indicate that muscle density may be as influential as muscle size for strength, physical function, and performance in healthy older adults. ClinicalTrials.gov , NCT02308228, Registered on 25 November 2014.
Collapse
Affiliation(s)
- Douglas E Long
- Department of Physical Therapy and Center for Muscle Biology, University of Kentucky, Charles T. Wethington Bldg., Lexington, KY, 40536-0200, USA.
| | - Bailey D Peck
- Department of Physical Therapy and Center for Muscle Biology, University of Kentucky, Charles T. Wethington Bldg., Lexington, KY, 40536-0200, USA
| | - Steven C Tuggle
- Center for Exercise Medicine and Department of Cell, Developmental, and Integrative Biology, University of Alabama at Birmingham, Birmingham, AL, USA
| | | | - Samuel T Windham
- Department of Surgery, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Marcas M Bamman
- Center for Exercise Medicine and Department of Cell, Developmental, and Integrative Biology, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Philip A Kern
- Department of Internal Medicine, Division of Endocrinology, and Barnstable Brown Diabetes and Obesity Center, University of Kentucky, Lexington, KY, USA
| | - Charlotte A Peterson
- Department of Physical Therapy and Center for Muscle Biology, University of Kentucky, Charles T. Wethington Bldg., Lexington, KY, 40536-0200, USA
| | - Rosicka G Walton
- Department of Physical Therapy and Center for Muscle Biology, University of Kentucky, Charles T. Wethington Bldg., Lexington, KY, 40536-0200, USA
| |
Collapse
|
39
|
Gorza L, Sorge M, Seclì L, Brancaccio M. Master Regulators of Muscle Atrophy: Role of Costamere Components. Cells 2021; 10:cells10010061. [PMID: 33401549 PMCID: PMC7823551 DOI: 10.3390/cells10010061] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2020] [Revised: 12/28/2020] [Accepted: 12/29/2020] [Indexed: 12/11/2022] Open
Abstract
The loss of muscle mass and force characterizes muscle atrophy in several different conditions, which share the expression of atrogenes and the activation of their transcriptional regulators. However, attempts to antagonize muscle atrophy development in different experimental contexts by targeting contributors to the atrogene pathway showed partial effects in most cases. Other master regulators might independently contribute to muscle atrophy, as suggested by our recent evidence about the co-requirement of the muscle-specific chaperone protein melusin to inhibit unloading muscle atrophy development. Furthermore, melusin and other muscle mass regulators, such as nNOS, belong to costameres, the macromolecular complexes that connect sarcolemma to myofibrils and to the extracellular matrix, in correspondence with specific sarcomeric sites. Costameres sense a mechanical load and transduce it both as lateral force and biochemical signals. Recent evidence further broadens this classic view, by revealing the crucial participation of costameres in a sarcolemmal “signaling hub” integrating mechanical and humoral stimuli, where mechanical signals are coupled with insulin and/or insulin-like growth factor stimulation to regulate muscle mass. Therefore, this review aims to enucleate available evidence concerning the early involvement of costamere components and additional putative master regulators in the development of major types of muscle atrophy.
Collapse
Affiliation(s)
- Luisa Gorza
- Department of Biomedical Sciences, University of Padova, 35121 Padova, Italy
- Correspondence:
| | - Matteo Sorge
- Department of Molecular Biotechnology and Health Sciences, University of Torino, 10126 Torino, Italy; (M.S.); (L.S.); (M.B.)
| | - Laura Seclì
- Department of Molecular Biotechnology and Health Sciences, University of Torino, 10126 Torino, Italy; (M.S.); (L.S.); (M.B.)
| | - Mara Brancaccio
- Department of Molecular Biotechnology and Health Sciences, University of Torino, 10126 Torino, Italy; (M.S.); (L.S.); (M.B.)
| |
Collapse
|
40
|
Jang KB, Kim JH, Purvis JM, Chen J, Ren P, Vazquez-Anon M, Kim SW. Effects of mineral methionine hydroxy analog chelate in sow diets on epigenetic modification and growth of progeny. J Anim Sci 2020; 98:5897043. [PMID: 32841352 PMCID: PMC7507415 DOI: 10.1093/jas/skaa271] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2020] [Accepted: 08/20/2020] [Indexed: 12/11/2022] Open
Abstract
The study was conducted to determine the effects of mineral methionine hydroxy analog chelate (MMHAC) partially replacing inorganic trace minerals in sow diets on epigenetic and transcriptional changes in the muscle and jejunum of progeny. The MMHAC is zinc (Zn), manganese (Mn), and copper (Cu) chelated with methionine hydroxy analog (Zn-, Mn-, and Cu-methionine hydroxy analog chelate [MHAC]). On day 35 of gestation, 60 pregnant sows were allotted to two dietary treatments in a randomized completed block design using parity as a block: 1) ITM: inorganic trace minerals with zinc sulfate (ZnSO4), manganese oxide (MnO), and copper sulfate (CuSO4) and 2) CTM: 50% of ITM was replaced with MMHAC (MINTREX trace minerals, Novus International Inc., St Charles, MO). Gestation and lactation diets were formulated to meet or exceed NRC requirements. On days 1 and 18 of lactation, milk samples from 16 sows per treatment were collected to measure immunoglobulins (immunoglobulin G, immunoglobulin A, and immunoglobulin M) and micromineral concentrations. Two pigs per litter were selected to collect blood to measure the concentration of immunoglobulins in the serum, and then euthanized to collect jejunal mucosa, jejunum tissues, and longissimus muscle to measure global deoxyribonucleic acid methylation, histone acetylation, cytokines, and jejunal histomorphology at birth and day 18 of lactation. Data were analyzed using Proc MIXED of SAS. Supplementation of MMHAC tended to decrease (P = 0.059) body weight (BW) loss of sows during lactation and tended to increase (P = 0.098) piglet BW on day 18 of lactation. Supplementation of MMHAC increased (P < 0.05) global histone acetylation and tended to decrease myogenic regulatory factor 4 messenger ribonucleic acid (mRNA; P = 0.068) and delta 4-desaturase sphingolipid1 (DEGS1) mRNA (P = 0.086) in longissimus muscle of piglets at birth. Supplementation of MMHAC decreased (P < 0.05) nuclear factor kappa B mRNA in the jejunum and DEGS1 mRNA in longissimus muscle and tended to decrease mucin-2 (MUC2) mRNA (P = 0.057) and transforming growth factor-beta 1 (TGF-β1) mRNA (P = 0.057) in the jejunum of piglets on day 18 of lactation. There were, however, no changes in the amounts of tumor necrosis factor-alpha, interleukin-8, TGF-β, MUC2, and myogenic factor 6 in the tissues by MMHAC. In conclusion, maternal supplementation of MMHAC could contribute to histone acetylation and programming in the fetus, which potentially regulates intestinal health and skeletal muscle development of piglets at birth and weaning, possibly leading to enhanced growth of their piglets.
Collapse
Affiliation(s)
- Ki Beom Jang
- Department of Animal Science, North Carolina State University, Raleigh, NC
| | - Jong Hyuk Kim
- Department of Animal Science, North Carolina State University, Raleigh, NC
| | | | | | - Ping Ren
- Novus International, Inc., St. Charles, MO
| | | | - Sung Woo Kim
- Department of Animal Science, North Carolina State University, Raleigh, NC
| |
Collapse
|
41
|
Peng Y, Yue F, Chen J, Xia W, Huang K, Yang G, Kuang S. Phosphatase orphan 1 inhibits myoblast proliferation and promotes myogenic differentiation. FASEB J 2020; 35:e21154. [PMID: 33140469 DOI: 10.1096/fj.202001672r] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2020] [Revised: 09/29/2020] [Accepted: 10/16/2020] [Indexed: 01/08/2023]
Abstract
Myogenesis includes sequential stages of progenitor cell proliferation, myogenic commitment and differentiation, myocyte fusion, and myotube maturation. Different stages of myogenesis are orchestrated and regulated by myogenic regulatory factors and various downstream cellular signaling. Here we identify phosphatase orphan 1 (Phospho1) as a new player in myogenesis. During activation, proliferation, and differentiation of quiescent satellite cells, the expression of Phospho1 gradually increases. Overexpression of Phospho1 inhibits myoblast proliferation but promotes their differentiation and fusion. Conversely, knockdown of Phospho1 accelerates myoblast proliferation but impairs myotube formation. Moreover, knockdown of Phospho1 decreases the OXPHO protein levels and mitochondria density, whereas overexpression of Phospho1 upregulates OXPHO protein levels and promotes mitochondrial oxygen consumption. Finally, we show that Phospho1 expression is controlled by myogenin, which binds to the promoter of Phospho1 to regulate its transcription. These results indicate a key role of Phospho1 in regulating myogenic differentiation and mitochondrial function.
Collapse
Affiliation(s)
- Ying Peng
- College of Animal Science and Technology, Northwest A&F University, Yangling, China.,Department of Animal Sciences, Purdue University, West Lafayette, IN, USA
| | - Feng Yue
- Department of Animal Sciences, Purdue University, West Lafayette, IN, USA
| | - Jingjuan Chen
- Department of Animal Sciences, Purdue University, West Lafayette, IN, USA
| | - Wei Xia
- Department of Animal Sciences, Purdue University, West Lafayette, IN, USA.,College of Life Science and Technology, Southwest Minzu University, Chengdu, China
| | - Kuilong Huang
- College of Animal Science and Technology, Northwest A&F University, Yangling, China.,Department of Animal Sciences, Purdue University, West Lafayette, IN, USA
| | - Gongshe Yang
- College of Animal Science and Technology, Northwest A&F University, Yangling, China
| | - Shihuan Kuang
- Department of Animal Sciences, Purdue University, West Lafayette, IN, USA
| |
Collapse
|
42
|
Lazure F, Blackburn DM, Corchado AH, Sahinyan K, Karam N, Sharanek A, Nguyen D, Lepper C, Najafabadi HS, Perkins TJ, Jahani-Asl A, Soleimani VD. Myf6/MRF4 is a myogenic niche regulator required for the maintenance of the muscle stem cell pool. EMBO Rep 2020; 21:e49499. [PMID: 33047485 PMCID: PMC7726801 DOI: 10.15252/embr.201949499] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2019] [Revised: 09/16/2020] [Accepted: 09/18/2020] [Indexed: 12/16/2022] Open
Abstract
The function and maintenance of muscle stem cells (MuSCs) are tightly regulated by signals originating from their niche environment. Skeletal myofibers are a principle component of the MuSC niche and are in direct contact with the muscle stem cells. Here, we show that Myf6 establishes a ligand/receptor interaction between muscle stem cells and their associated muscle fibers. Our data show that Myf6 transcriptionally regulates a broad spectrum of myokines and muscle‐secreted proteins in skeletal myofibers, including EGF. EGFR signaling blocks p38 MAP kinase‐induced differentiation of muscle stem cells. Homozygous deletion of Myf6 causes a significant reduction in the ability of muscle to produce EGF, leading to a deregulation in EGFR signaling. Consequently, although Myf6‐knockout mice are born with a normal muscle stem cell compartment, they undergo a progressive reduction in their stem cell pool during postnatal life due to spontaneous exit from quiescence. Taken together, our data uncover a novel role for Myf6 in promoting the expression of key myokines, such as EGF, in the muscle fiber which prevents muscle stem cell exhaustion by blocking their premature differentiation.
Collapse
Affiliation(s)
- Felicia Lazure
- Department of Human Genetics, McGill University, Montréal, QC, Canada.,Lady Davis Institute for Medical Research, Jewish General Hospital, Montréal, QC, Canada
| | - Darren M Blackburn
- Department of Human Genetics, McGill University, Montréal, QC, Canada.,Lady Davis Institute for Medical Research, Jewish General Hospital, Montréal, QC, Canada
| | - Aldo H Corchado
- Department of Human Genetics, McGill University, Montréal, QC, Canada
| | - Korin Sahinyan
- Department of Human Genetics, McGill University, Montréal, QC, Canada.,Lady Davis Institute for Medical Research, Jewish General Hospital, Montréal, QC, Canada
| | - Nabila Karam
- Department of Human Genetics, McGill University, Montréal, QC, Canada.,Lady Davis Institute for Medical Research, Jewish General Hospital, Montréal, QC, Canada
| | - Ahmad Sharanek
- Lady Davis Institute for Medical Research, Jewish General Hospital, Montréal, QC, Canada
| | - Duy Nguyen
- Lady Davis Institute for Medical Research, Jewish General Hospital, Montréal, QC, Canada
| | - Christoph Lepper
- Department of Physiology & Cell Biology, College of Medicine, The Ohio State University, Columbus, OH, USA
| | | | - Theodore J Perkins
- Sprott Center for Stem Cell Research, Ottawa Hospital Research Institute, Ottawa, ON, Canada.,Department of Biochemistry, Microbiology and Immunology, University of Ottawa, Ottawa, ON, Canada
| | - Arezu Jahani-Asl
- Lady Davis Institute for Medical Research, Jewish General Hospital, Montréal, QC, Canada.,Faculty of Medicine, Gerald Bronfman Department of Oncology, McGill University, Montréal, QC, Canada
| | - Vahab D Soleimani
- Department of Human Genetics, McGill University, Montréal, QC, Canada.,Lady Davis Institute for Medical Research, Jewish General Hospital, Montréal, QC, Canada
| |
Collapse
|
43
|
Ganassi M, Badodi S, Wanders K, Zammit PS, Hughes SM. Myogenin is an essential regulator of adult myofibre growth and muscle stem cell homeostasis. eLife 2020; 9:e60445. [PMID: 33001028 PMCID: PMC7599067 DOI: 10.7554/elife.60445] [Citation(s) in RCA: 65] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2020] [Accepted: 09/30/2020] [Indexed: 02/06/2023] Open
Abstract
Growth and maintenance of skeletal muscle fibres depend on coordinated activation and return to quiescence of resident muscle stem cells (MuSCs). The transcription factor Myogenin (Myog) regulates myocyte fusion during development, but its role in adult myogenesis remains unclear. In contrast to mice, myog-/-zebrafish are viable, but have hypotrophic muscles. By isolating adult myofibres with associated MuSCs, we found that myog-/- myofibres have severely reduced nuclear number, but increased myonuclear domain size. Expression of fusogenic genes is decreased, Pax7 upregulated, MuSCs are fivefold more numerous and mis-positioned throughout the length of myog-/-myofibres instead of localising at myofibre ends as in wild-type. Loss of Myog dysregulates mTORC1 signalling, resulting in an 'alerted' state of MuSCs, which display precocious activation and faster cell cycle entry ex vivo, concomitant with myod upregulation. Thus, beyond controlling myocyte fusion, Myog influences the MuSC:niche relationship, demonstrating a multi-level contribution to muscle homeostasis throughout life.
Collapse
Affiliation(s)
- Massimo Ganassi
- Randall Centre for Cell and Molecular Biophysics, King’s College LondonLondonUnited Kingdom
| | - Sara Badodi
- Blizard Institute, Barts and The London School of Medicine and Dentistry, Queen Mary University of LondonLondonUnited Kingdom
| | - Kees Wanders
- Randall Centre for Cell and Molecular Biophysics, King’s College LondonLondonUnited Kingdom
| | - Peter S Zammit
- Randall Centre for Cell and Molecular Biophysics, King’s College LondonLondonUnited Kingdom
| | - Simon M Hughes
- Randall Centre for Cell and Molecular Biophysics, King’s College LondonLondonUnited Kingdom
| |
Collapse
|
44
|
Priatno W, Jo YH, Nejad JG, Lee JS, Moon JO, Lee HG. "Dietary supplementation of L-tryptophan" increases muscle development, adipose tissue catabolism and fatty acid transportation in the muscles of Hanwoo steers. JOURNAL OF ANIMAL SCIENCE AND TECHNOLOGY 2020; 62:595-604. [PMID: 33089225 PMCID: PMC7553846 DOI: 10.5187/jast.2020.62.5.595] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/28/2020] [Revised: 06/19/2020] [Accepted: 06/20/2020] [Indexed: 02/02/2023]
Abstract
This study investigated the effects of dietary rumen-protected L-tryptophan (TRP)
supplementation (43.4 mg of L-tryptophan kg−1 body weigt [BW])
for 65 days in Hanwoo steers on muscle development related to gene expressions
and adipose tissue catabolism and fatty acid transportation in
longissimus dorsi muscles. Eight Hanwoo steers (initial BW
= 424.6 kg [SD 42.3]; 477 days old [SD 4.8]) were randomly allocated to two
groups (n = 4) of control and treatment and were supplied with total mixed
ration (TMR). The treatment group was fed with 15 g of rumen-protected TRP (0.1%
of TMR as-fed basis equal to 43.4 mg of TRP kg−1 BW) once a
day at 0800 h as top-dressed to TMR. Blood samples were collected 3 times, at 0,
5, and 10 weeks of the experiment, for assessment of hematological and
biochemical parameters. For gene study, the longissimus dorsi
muscle samples (12 to 13 ribs, approximately 2 g) were collected from each
individual by biopsy at end of the study (10 weeks). Growth performance
parameters including final BW, average daily gain, and gain to feed ratio, were
not different (p > 0.05) between the two groups.
Hematological parameters including granulocyte, lymphocyte, monocyte, platelet,
red blood cell, hematocrit, and white blood cell showed no difference
(p > 0.05) between the two groups except for
hemoglobin (p = 0.025), which was higher in the treatment than
in the control group. Serum biochemical parameters including total protein,
albumin, globulin, blood urea nitrogen, creatinine phosphokinase, glucose,
nonesterified fatty acids, and triglyceride also showed no differences between
the two groups (p > 0.05). Gene expression related to
muscle development (Myogenic factor 6 [MYF6], myogenine
[MyoG]), adipose tissue catabolism (lipoprotein lipase
[LPL]), and fatty acid transformation indicator (fatty acid
binding protein 4 [FABP4]) were increased in the treatment
group compared to the control group (p < 0.05).
Collectively, supplementation of TRP (65 days in this study) promotes muscle
development and increases the ability of the animals to catabolize and transport
fat in muscles due to an increase in expressions of MYF6,
MyoG, FABP4, and LPL
gene.
Collapse
Affiliation(s)
- Wahyu Priatno
- Department of Animal Science and Technology, Sanghuh College of Life Sciences, Konkuk University, Seoul 05029, Korea
| | - Yong-Ho Jo
- Department of Animal Science and Technology, Sanghuh College of Life Sciences, Konkuk University, Seoul 05029, Korea.,Team of an Educational Program for Specialists in Global Animal Science, Brain Korea 21 Plus Project, Konkuk University, Seoul 05029, Korea
| | - Jalil Ghassemi Nejad
- Department of Animal Science and Technology, Sanghuh College of Life Sciences, Konkuk University, Seoul 05029, Korea.,Team of an Educational Program for Specialists in Global Animal Science, Brain Korea 21 Plus Project, Konkuk University, Seoul 05029, Korea
| | - Jae-Sung Lee
- Department of Animal Science and Technology, Sanghuh College of Life Sciences, Konkuk University, Seoul 05029, Korea
| | - Jun-Ok Moon
- Institute of Biotechnology, CJ CheilJedang, Suwon 16471, Korea
| | - Hong-Gu Lee
- Department of Animal Science and Technology, Sanghuh College of Life Sciences, Konkuk University, Seoul 05029, Korea.,Team of an Educational Program for Specialists in Global Animal Science, Brain Korea 21 Plus Project, Konkuk University, Seoul 05029, Korea
| |
Collapse
|
45
|
Ge L, Yang J, Gong X, Kang J, Zhang Y, Liu X, Quan F. Bovine CAPN3 core promoter initiates expression of foreign genes in skeletal muscle cells by MyoD transcriptional regulation. Int J Biochem Cell Biol 2020; 127:105837. [PMID: 32827763 DOI: 10.1016/j.biocel.2020.105837] [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: 05/07/2020] [Revised: 08/14/2020] [Accepted: 08/19/2020] [Indexed: 11/18/2022]
Abstract
Activating foreign genes in bovine skeletal muscle is necessary in the study of the role of related genes in skeletal muscle development and the effects on skeletal muscle formation, especially in the study of transgenic cattle. At this time, a skeletal muscle-specific promoter should be selected to initiate a functional foreign gene. Here, calpain3 (CAPN3) was found to be highly expressed in skeletal muscle and skeletal muscle cells by real-time PCR. Next, 5' deletion analysis of the bovine CAPN3 promoter was performed and showed that Q5(-495/+40) region was the core promoter of the bovine CAPN3. A key regulatory site (-465/-453) in CAPN3 core promoter was associated with the transcription factor, MyoD, which is a skeletal muscle-specific transcription factor. Furthermore, the mRNA and protein expression levels of MyoD and CAPN3 were positively correlated during skeletal muscle cell differentiation. The overexpression of MyoD enhanced the activity of the bovine CAPN3 core promoter. The core promoter Q5(-495/+40) could drive the exogenous gene EGFP and the fat-specific expression gene PPARγ in skeletal muscle cells. In summary, our study obtained a bovine skeletal muscle-specific promoter and provided a basis for studying the role of functional genes in the growth and development of skeletal muscle. It also provides a basis for studying the transcriptional regulation mechanism of CAPN3.
Collapse
Affiliation(s)
- Luxing Ge
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, 712100, China; Key Laboratory of Animal Biotechnology, Ministry of Agriculture, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Jiashu Yang
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, 712100, China; Key Laboratory of Animal Biotechnology, Ministry of Agriculture, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Xutong Gong
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, 712100, China; Key Laboratory of Animal Biotechnology, Ministry of Agriculture, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Jian Kang
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, 712100, China; Key Laboratory of Animal Biotechnology, Ministry of Agriculture, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Yong Zhang
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, 712100, China; Key Laboratory of Animal Biotechnology, Ministry of Agriculture, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Xu Liu
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, 712100, China; Key Laboratory of Animal Biotechnology, Ministry of Agriculture, Northwest A&F University, Yangling, Shaanxi, 712100, China.
| | - Fusheng Quan
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, 712100, China; Key Laboratory of Animal Biotechnology, Ministry of Agriculture, Northwest A&F University, Yangling, Shaanxi, 712100, China.
| |
Collapse
|
46
|
Nath SR, Lieberman ML, Yu Z, Marchioretti C, Jones ST, Danby ECE, Van Pelt KM, Sorarù G, Robins DM, Bates GP, Pennuto M, Lieberman AP. MEF2 impairment underlies skeletal muscle atrophy in polyglutamine disease. Acta Neuropathol 2020; 140:63-80. [PMID: 32306066 PMCID: PMC7166004 DOI: 10.1007/s00401-020-02156-4] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2020] [Revised: 04/06/2020] [Accepted: 04/07/2020] [Indexed: 02/07/2023]
Abstract
Polyglutamine (polyQ) tract expansion leads to proteotoxic misfolding and drives a family of nine diseases. We study spinal and bulbar muscular atrophy (SBMA), a progressive degenerative disorder of the neuromuscular system caused by the polyQ androgen receptor (AR). Using a knock-in mouse model of SBMA, AR113Q mice, we show that E3 ubiquitin ligases which are a hallmark of the canonical muscle atrophy machinery are not induced in AR113Q muscle. Similarly, we find no evidence to suggest dysfunction of signaling pathways that trigger muscle hypertrophy or impairment of the muscle stem cell niche. Instead, we find that skeletal muscle atrophy is characterized by diminished function of the transcriptional regulator Myocyte Enhancer Factor 2 (MEF2), a regulator of myofiber homeostasis. Decreased expression of MEF2 target genes is age- and glutamine tract length-dependent, occurs due to polyQ AR proteotoxicity, and is associated with sequestration of MEF2 into intranuclear inclusions in muscle. Skeletal muscle from R6/2 mice, a model of Huntington disease which develops progressive atrophy, also sequesters MEF2 into inclusions and displays age-dependent loss of MEF2 target genes. Similarly, SBMA patient muscle shows loss of MEF2 target gene expression, and restoring MEF2 activity in AR113Q muscle rescues fiber size and MEF2-regulated gene expression. This work establishes MEF2 impairment as a novel mechanism of skeletal muscle atrophy downstream of toxic polyglutamine proteins and as a therapeutic target for muscle atrophy in these disorders.
Collapse
|
47
|
Fernandez GJ, Ferreira JH, Vechetti IJ, de Moraes LN, Cury SS, Freire PP, Gutiérrez J, Ferretti R, Dal-Pai-Silva M, Rogatto SR, Carvalho RF. MicroRNA-mRNA Co-sequencing Identifies Transcriptional and Post-transcriptional Regulatory Networks Underlying Muscle Wasting in Cancer Cachexia. Front Genet 2020; 11:541. [PMID: 32547603 PMCID: PMC7272700 DOI: 10.3389/fgene.2020.00541] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2020] [Accepted: 05/05/2020] [Indexed: 12/23/2022] Open
Abstract
Cancer cachexia is a metabolic syndrome with alterations in gene regulatory networks that consequently lead to skeletal muscle wasting. Integrating microRNAs-mRNAs omics profiles offers an opportunity to understand transcriptional and post-transcriptional regulatory networks underlying muscle wasting. Here, we used RNA sequencing to simultaneously integrate and explore microRNAs and mRNAs expression profiles in the tibialis anterior (TA) muscles of the Lewis Lung Carcinoma (LLC) model of cancer cachexia. We found 1,008 mRNAs and 18 microRNAs differentially expressed in cachectic mice compared with controls. Although our transcriptomic analysis demonstrated a high heterogeneity in mRNA profiles of cachectic mice, we identified a reduced number of differentially expressed genes that were uniformly regulated within cachectic muscles. This set of uniformly regulated genes is associated with the extracellular matrix (ECM), proteolysis, and inflammatory response. We also used transcriptomic data to perform enrichment analysis of transcriptional factor binding sites in promoter sequences, which revealed activation of the atrophy-related transcription factors NF-κB, Stat3, AP-1, and FoxO. Furthermore, the integration of mRNA and microRNA expression profiles identified post-transcriptional regulation by microRNAs of genes involved in ECM organization, cell migration, transcription factors binding, ion transport, and the FoxO signaling pathway. Our integrative analysis of microRNA-mRNA co-profiles comprehensively characterized regulatory relationships of molecular pathways and revealed microRNAs targeting ECM-associated genes in cancer cachexia.
Collapse
Affiliation(s)
- Geysson Javier Fernandez
- Department of Structural and Functional Biology, Institute of Biosciences, São Paulo State University, Botucatu, Brazil.,Faculty of Medicine, University of Antioquia, Medellín, Colombia
| | - Juarez Henrique Ferreira
- Department of Structural and Functional Biology, Institute of Biosciences, São Paulo State University, Botucatu, Brazil
| | - Ivan José Vechetti
- Department of Structural and Functional Biology, Institute of Biosciences, São Paulo State University, Botucatu, Brazil
| | - Leonardo Nazario de Moraes
- Department of Structural and Functional Biology, Institute of Biosciences, São Paulo State University, Botucatu, Brazil
| | - Sarah Santiloni Cury
- Department of Structural and Functional Biology, Institute of Biosciences, São Paulo State University, Botucatu, Brazil
| | - Paula Paccielli Freire
- Department of Structural and Functional Biology, Institute of Biosciences, São Paulo State University, Botucatu, Brazil
| | - Jayson Gutiérrez
- Department of Plant Biotechnology and Bioinformatics, Ghent University, Ghent, Belgium
| | - Renato Ferretti
- Department of Structural and Functional Biology, Institute of Biosciences, São Paulo State University, Botucatu, Brazil
| | - Maeli Dal-Pai-Silva
- Department of Structural and Functional Biology, Institute of Biosciences, São Paulo State University, Botucatu, Brazil
| | - Silvia Regina Rogatto
- Department of Clinical Genetics, University Hospital of Southern Denmark, Vejle, Institute of Regional Health Research, University of Southern Denmark, Odense, Denmark
| | - Robson Francisco Carvalho
- Department of Structural and Functional Biology, Institute of Biosciences, São Paulo State University, Botucatu, Brazil
| |
Collapse
|
48
|
Judge SM, Deyhle MR, Neyroud D, Nosacka RL, D'Lugos AC, Cameron ME, Vohra RS, Smuder AJ, Roberts BM, Callaway CS, Underwood PW, Chrzanowski SM, Batra A, Murphy ME, Heaven JD, Walter GA, Trevino JG, Judge AR. MEF2c-Dependent Downregulation of Myocilin Mediates Cancer-Induced Muscle Wasting and Associates with Cachexia in Patients with Cancer. Cancer Res 2020; 80:1861-1874. [PMID: 32132110 DOI: 10.1158/0008-5472.can-19-1558] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2019] [Revised: 11/27/2019] [Accepted: 02/24/2020] [Indexed: 12/27/2022]
Abstract
Skeletal muscle wasting is a devastating consequence of cancer that contributes to increased complications and poor survival, but is not well understood at the molecular level. Herein, we investigated the role of Myocilin (Myoc), a skeletal muscle hypertrophy-promoting protein that we showed is downregulated in multiple mouse models of cancer cachexia. Loss of Myoc alone was sufficient to induce phenotypes identified in mouse models of cancer cachexia, including muscle fiber atrophy, sarcolemmal fragility, and impaired muscle regeneration. By 18 months of age, mice deficient in Myoc showed significant skeletal muscle remodeling, characterized by increased fat and collagen deposition compared with wild-type mice, thus also supporting Myoc as a regulator of muscle quality. In cancer cachexia models, maintaining skeletal muscle expression of Myoc significantly attenuated muscle loss, while mice lacking Myoc showed enhanced muscle wasting. Furthermore, we identified the myocyte enhancer factor 2 C (MEF2C) transcription factor as a key upstream activator of Myoc whose gain of function significantly deterred cancer-induced muscle wasting and dysfunction in a preclinical model of pancreatic ductal adenocarcinoma (PDAC). Finally, compared with noncancer control patients, MYOC was significantly reduced in skeletal muscle of patients with PDAC defined as cachectic and correlated with MEF2c. These data therefore identify disruptions in MEF2c-dependent transcription of Myoc as a novel mechanism of cancer-associated muscle wasting that is similarly disrupted in muscle of patients with cachectic cancer. SIGNIFICANCE: This work identifies a novel transcriptional mechanism that mediates skeletal muscle wasting in murine models of cancer cachexia that is disrupted in skeletal muscle of patients with cancer exhibiting cachexia.
Collapse
Affiliation(s)
- Sarah M Judge
- Department of Physical Therapy, University of Florida Health Science Center, Gainesville, Florida.
| | - Michael R Deyhle
- Department of Physical Therapy, University of Florida Health Science Center, Gainesville, Florida
| | - Daria Neyroud
- Department of Physical Therapy, University of Florida Health Science Center, Gainesville, Florida
| | - Rachel L Nosacka
- Department of Physical Therapy, University of Florida Health Science Center, Gainesville, Florida
| | - Andrew C D'Lugos
- Department of Physical Therapy, University of Florida Health Science Center, Gainesville, Florida
| | - Miles E Cameron
- Department of Physical Therapy, University of Florida Health Science Center, Gainesville, Florida.,Department of Surgery, University of Florida Health Science Center, Gainesville, Florida
| | - Ravneet S Vohra
- Department of Physiology, College of Medicine, University of Florida Health Science Center, Gainesville, Florida
| | - Ashley J Smuder
- Department of Health and Human Performance, University of Florida, Gainesville, Florida
| | - Brandon M Roberts
- Department of Physical Therapy, University of Florida Health Science Center, Gainesville, Florida
| | - Chandler S Callaway
- Department of Physical Therapy, University of Florida Health Science Center, Gainesville, Florida
| | - Patrick W Underwood
- Department of Surgery, University of Florida Health Science Center, Gainesville, Florida
| | - Stephen M Chrzanowski
- Department of Physiology, College of Medicine, University of Florida Health Science Center, Gainesville, Florida
| | - Abhinandan Batra
- Department of Physiology, College of Medicine, University of Florida Health Science Center, Gainesville, Florida
| | - Meghan E Murphy
- Department of Physical Therapy, University of Florida Health Science Center, Gainesville, Florida
| | - Jonathan D Heaven
- Department of Physical Therapy, University of Florida Health Science Center, Gainesville, Florida
| | - Glenn A Walter
- Department of Physiology, College of Medicine, University of Florida Health Science Center, Gainesville, Florida
| | - Jose G Trevino
- Department of Surgery, University of Florida Health Science Center, Gainesville, Florida
| | - Andrew R Judge
- Department of Physical Therapy, University of Florida Health Science Center, Gainesville, Florida.
| |
Collapse
|
49
|
Hosoyama T. Possible application of muscle specific conditional mouse-derived induced pluripotent stem cells for muscle research. Biochem Biophys Rep 2020; 21:100744. [PMID: 32025579 PMCID: PMC6995992 DOI: 10.1016/j.bbrep.2020.100744] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2019] [Revised: 12/12/2019] [Accepted: 01/28/2020] [Indexed: 11/17/2022] Open
Abstract
The Cre-driver mouse line, which allows for in vivo regulation of target gene(s) in specific cells, is an indispensable tool for recent muscle research. In this study, I aimed to explore new applications of muscle specific Cre-driver mouse line in muscle research. For this purpose, I generated an iPS cells from a myofiber specific conditional mouse with tamoxifen inducible GFP expression, and then I checked whether homologous recombination was induced in the iPS-derived myogenic cells by tamoxifen administration. Fibroblasts were isolated from the tails of Myf6CE/wt::CAG-EGFP mice, which expressed GFP specifically in Myf6 lineages by tamoxifen injection, and then iPS cells was generated by transfection with a vector based on sendai-virus and containing OSKM genes. Muscle specific conditional mouse-derived iPS cells (mCM-iPSCs) were successfully differentiated to myogenic cells, such as Pax7+ muscle progenitors, MyoD+ myoblasts, and MHC+ myotubes, under myogenic differentiation conditions. Using this model, I examined whether homologous recombination was induced in mCM-iPSC-derived myotubes by 4-hydroxytamoxifen (4OH-TAM) administration. As a result, multinucleated myotubes showed GFP expression, while no GFP signals were detected in both Pax7+ muscle progenitor and non-myogenic cells. These results indicated that homologous recombination could be induced in mCM-iPSC–derived myotubes by tamoxifen administration, and that this system operated normally even in reprogrammed cells. Also, I evidenced that GFP reporter was expressed in myoblasts in addition to multinucleated myotubes when tamoxifen-pulse was applied at an early phase of myogenesis. Taken together, Myf6CE/wt::CAG-EGFP mouse-derived iPS cells reproduced at least in part Myf6 expression during mouse myogenesis. This study demonstrated a novel application of muscle specific conditional mouse in addition to in vivo application, and mCM-iPSCs could also be used in in vitro investigations with muscle specific conditional knock-out mouse. iPS cells can be generated from muscle specific conditional mouse line. mCM-iPS cells reproduce early muscle development in vitro. mCM-iPS cells are available for lineage tracing of Myf6+ muscle progenitors.
Collapse
Affiliation(s)
- Tohru Hosoyama
- Department of Regenerative Medicine, National Center for Geriatrics and Gerontology, 7-430 Morioka-cho, Obu, Aichi, 474-8511, Japan
| |
Collapse
|
50
|
Attems J. The first year. Acta Neuropathol 2020; 139:1-2. [PMID: 31832772 DOI: 10.1007/s00401-019-02113-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2019] [Accepted: 12/07/2019] [Indexed: 11/28/2022]
Affiliation(s)
- Johannes Attems
- Translational and Clinical Research Institute, Newcastle University, Campus for Ageing and Vitality, Newcastle upon Tyne, NE4 5PL, UK.
| |
Collapse
|