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Nagata Y, Tomimori J, Hagiwara T. Anti-apoptotic protein Bcl-2 contributes to the determination of reserve cells during myogenic differentiation of C2C12 cells. In Vitro Cell Dev Biol Anim 2024:10.1007/s11626-024-00905-3. [PMID: 38619740 DOI: 10.1007/s11626-024-00905-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2024] [Accepted: 03/28/2024] [Indexed: 04/16/2024]
Abstract
Skeletal muscle's regenerative ability is vital for maintaining muscle function, but chronic diseases like Duchenne muscular dystrophy can deplete this capacity. Muscle satellite cells, quiescent in normal situations, are activated during muscle injury, expressing myogenic regulatory factors, and producing myogenic progenitor cells. It was reported that muscle stem cells in primary culture and reserve cells in C2C12 cells express anti-apoptotic protein Bcl-2. Although the role of Bcl-2 expressed in myogenic cells has been thought to be to enhance cell viability, we hypothesized that Bcl-2 may promote the formation of reserve cells. The expression pattern analysis showed the expression of Bcl-2 in undifferentiated mononucleated cells, emphasizing its usefulness as a reserve cell marker and reminding us that cells expressing Bcl-2 have low proliferative potential. Silencing of Bcl-2 by transfection with siRNA decreased cell viability and the number of reserve cells, while overexpression of Bcl-2 not only increases cell viability but also inhibits muscle differentiation and proliferation. These results emphasize dual roles of Bcl-2 in protecting cells from apoptosis and contributing to reserve cell formation by regulating myoblast proliferation and/or differentiation. Overall, the study sheds light on the multifaceted role of Bcl-2 in the maintenance of skeletal muscle regeneration.
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Affiliation(s)
- Yosuke Nagata
- Department of Bioscience, Faculty of Life Science, Okayama University of Science, 1-1 Ridaicho, Kita-Ku, Okayama-Shi, 700-0005, Japan.
- Department of Life Science, Faculty of Science, Okayama University of Science, Okayama, Japan.
- Department of Natural Science, Graduate School of Science and Engineering, Okayama University of Science, Okayama, Japan.
| | - Jun Tomimori
- Department of Life Science, Faculty of Science, Okayama University of Science, Okayama, Japan
| | - Tomoharu Hagiwara
- Department of Natural Science, Graduate School of Science and Engineering, Okayama University of Science, Okayama, Japan
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2
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Miao W, Ma Z, Tang Z, Yu L, Liu S, Huang T, Wang P, Wu T, Song Z, Zhang H, Li Y, Zhou L. Integrative ATAC-seq and RNA-seq Analysis of the Longissimus Muscle of Luchuan and Duroc Pigs. Front Nutr 2021; 8:742672. [PMID: 34660666 PMCID: PMC8511529 DOI: 10.3389/fnut.2021.742672] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2021] [Accepted: 09/06/2021] [Indexed: 12/19/2022] Open
Abstract
Luchuan pig is a typical obese pig breed in China, and the diameter and area of its longissimus dorsi muscle fibers are significantly smaller than those of Duroc (lean) pig. Skeletal muscle fiber characteristics are related to meat quality of livestock. There is a significant correlation between the quality of different breeds of pork and the characteristics of muscle fiber, which is an important factor affecting the quality of pork. The diameter and area of muscle fibers are related to muscle growth and development. Therefore, we used the assay for transposase-accessible chromatin using sequencing (ATAC-seq) and RNA sequencing (RNA-seq) analysis to investigate the potential mechanism underlying the difference in skeletal muscle growth and development between the two types of pigs. First, transposase-accessible chromatin was analyzed to map the landscape of open chromatin regions and transcription factor binding sites. We identified several transcription factors that potentially affected muscle growth and development, including TFAP4, MAX, NHLH1, FRX5, and TGIF1. We also found that transcription factors with basic helix-loop-helix structures had a preference for binding to genes involved in muscle development. Then, by integrating ATAC-seq and RNA-seq, we found that the Wnt signaling pathway, the mTOR signaling pathway, and other classical pathways regulate skeletal muscle development. In addition, some pathways that might regulate skeletal muscle growth, such as parathyroid hormone synthesis, secretion, and action, synthesis and degradation of ketone bodies, and the thyroid hormone signaling pathway, which were significantly enriched. After further study, we identified a number of candidate genes (ASNS, CARNS1, G0S2, PPP1R14C, and SH3BP5) that might be associated with muscle development. We also found that the differential regulation of chromatin openness at the level of some genes was contrary to the differential regulation at the level of transcription, suggesting that transcription factors and transcriptional repressors may be involved in the regulation of gene expression. Our study provided an in-depth understanding of the mechanism behind the differences in muscle fibers from two species of pig and provided an important foundation for further research on improving the quality of pork.
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Affiliation(s)
- Weiwei Miao
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, College of Animal Science and Technology, Guangxi University, Nanning, China
| | - Zeqiang Ma
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, College of Animal Science and Technology, Guangxi University, Nanning, China
| | - Zhanyang Tang
- Tilapia Seed Farm, Guangxi Academy of Fishery Sciences, Nanning, China
| | - Lin Yu
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, College of Animal Science and Technology, Guangxi University, Nanning, China
| | - Siqi Liu
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, College of Animal Science and Technology, Guangxi University, Nanning, China
| | - Tengda Huang
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, College of Animal Science and Technology, Guangxi University, Nanning, China
| | - Peng Wang
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, College of Animal Science and Technology, Guangxi University, Nanning, China
| | - Tian Wu
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, College of Animal Science and Technology, Guangxi University, Nanning, China
| | - Ziyi Song
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, College of Animal Science and Technology, Guangxi University, Nanning, China
| | - Haojie Zhang
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, College of Animal Science and Technology, Guangxi University, Nanning, China
| | - Yixing Li
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, College of Animal Science and Technology, Guangxi University, Nanning, China
| | - Lei Zhou
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, College of Animal Science and Technology, Guangxi University, Nanning, China
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3
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Role of Sphingosine 1-Phosphate Signalling Axis in Muscle Atrophy Induced by TNFα in C2C12 Myotubes. Int J Mol Sci 2021; 22:ijms22031280. [PMID: 33525436 PMCID: PMC7866171 DOI: 10.3390/ijms22031280] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2020] [Revised: 01/19/2021] [Accepted: 01/25/2021] [Indexed: 02/07/2023] Open
Abstract
Skeletal muscle atrophy is characterized by a decrease in muscle mass causing reduced agility, increased fatigability and higher risk of bone fractures. Inflammatory cytokines, such as tumor necrosis factor-alpha (TNFα), are strong inducers of skeletal muscle atrophy. The bioactive sphingolipid sphingosine 1-phoshate (S1P) plays an important role in skeletal muscle biology. S1P, generated by the phosphorylation of sphingosine catalyzed by sphingosine kinase (SK1/2), exerts most of its actions through its specific receptors, S1P1-5. Here, we provide experimental evidence that TNFα induces atrophy and autophagy in skeletal muscle C2C12 myotubes, modulating the expression of specific markers and both active and passive membrane electrophysiological properties. NMR-metabolomics provided a clear picture of the deep remodelling of skeletal muscle fibre metabolism induced by TNFα challenge. The cytokine is responsible for the modulation of S1P signalling axis, upregulating mRNA levels of S1P2 and S1P3 and downregulating those of SK2. TNFα increases the phosphorylated form of SK1, readout of its activation. Interestingly, pharmacological inhibition of SK1 and specific antagonism of S1P3 prevented the increase in autophagy markers and the changes in the electrophysiological properties of C2C12 myotubes without affecting metabolic remodelling induced by the cytokine, highlighting the involvement of S1P signalling axis on TNFα-induced atrophy in skeletal muscle.
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4
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Germinario E, Bondì M, Blaauw B, Betto R, Danieli-Betto D. Reduction of circulating sphingosine-1-phosphate worsens mdx soleus muscle dystrophic phenotype. Exp Physiol 2020; 105:1895-1906. [PMID: 32897592 DOI: 10.1113/ep088603] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2020] [Accepted: 09/02/2020] [Indexed: 12/13/2022]
Abstract
NEW FINDINGS What is the central question of the study? What are the consequences of reducing circulating sphingosine-1-phosphate (S1P) for muscle physiology in the murine model of Duchenne muscular dystrophy (DMD)? What is the main result and its importance? Reduction of the circulating S1P level in mdx mice aggravates the dystrophic phenotype, as seen by an increase in fibre atrophy, fibrosis and loss of specific force, suggesting that S1P signalling is a potential therapeutic target in DMD. Although further studies are needed, plasma S1P levels have the intriguing possibility of being used as a biomarker for disease severity, an important issue in DMD. ABSTRACT Sphingosine-1-phosphate (S1P) is an important regulator of skeletal muscle properties. The dystrophin-deficient mdx mouse possesses low levels of S1P (∼50%) compared with wild type. Increased S1P availability was demonstrated to ameliorate the dystrophic phenotype in Drosophila and in mdx mice. Here, we analysed the effects produced by further reduction of S1P availability on the mass, force and regenerative capacity of dystrophic mdx soleus. Circulating S1P was neutralized by a specific anti-S1P antibody (S1P-Ab) known to lower the extracellular concentration of this signalling lipid. The S1P-Ab was administered intraperitoneally in adult mdx mice every 2 days for the duration of experiments. Soleus muscle properties were analysed 7 or 14 days after the first injection. The decreased availability of circulating S1P after the 14 day treatment reduced mdx soleus fibre cross-sectional area (-16%, P < 0.05), an effect that was associated with an increase in markers of proteolytic (MuRF1 and atrogin-1) and autophagic (p62 and LC3-II/LC3-I ratio) pathways. Moreover, an increase of fibrosis was also observed (+26%, P < 0.05). Notably, the treatment also caused a reduction of specific tetanic tension (-29%, P < 0.05). The mdx soleus regenerative capacity was only slightly influenced by reduced S1P. In conclusion, neutralization of circulating S1P reduces the mass and specific force and increases fibrosis of mdx soleus muscle, thus worsening the dystrophic phenotype. The results confirm that active, functional S1P signalling might counteract the progression of soleus mdx pathology and validate the pathway as a potential therapeutic target for muscular dystrophies.
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Affiliation(s)
- Elena Germinario
- Department of Biomedical Sciences, University of Padova, Padova, Italy.,Interuniversity Institute of Myology, Italy
| | - Michela Bondì
- Department of Biomedical Sciences, University of Padova, Padova, Italy
| | - Bert Blaauw
- Department of Biomedical Sciences, University of Padova, Padova, Italy.,Interuniversity Institute of Myology, Italy
| | - Romeo Betto
- Interuniversity Institute of Myology, Italy.,CNR-Institute for Neuroscience, CNR, Padova, Italy
| | - Daniela Danieli-Betto
- Department of Biomedical Sciences, University of Padova, Padova, Italy.,Interuniversity Institute of Myology, Italy
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Cheikhi A, Anguiano T, Lasak J, Qian B, Sahu A, Mimiya H, Cohen CC, Wipf P, Ambrosio F, Barchowsky A. Arsenic Stimulates Myoblast Mitochondrial Epidermal Growth Factor Receptor to Impair Myogenesis. Toxicol Sci 2020; 176:162-174. [PMID: 32159786 PMCID: PMC7357174 DOI: 10.1093/toxsci/kfaa031] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
Arsenic exposure impairs muscle metabolism, maintenance, progenitor cell differentiation, and regeneration following acute injury. Low to moderate arsenic exposures target muscle fiber and progenitor cell mitochondria to epigenetically decrease muscle quality and regeneration. However, the mechanisms for how low levels of arsenic signal for prolonged mitochondrial dysfunction are not known. In this study, arsenic attenuated murine C2C12 myoblasts differentiation and resulted in abnormal undifferentiated myoblast proliferation. Arsenic prolonged ligand-independent phosphorylation of mitochondrially localized epidermal growth factor receptor (EGFR), a major driver of proliferation. Treating cells with a selective EGFR kinase inhibitor, AG-1478, prevented arsenic inhibition of myoblast differentiation. AG-1478 decreased arsenic-induced colocalization of pY845EGFR with mitochondrial cytochrome C oxidase subunit II, as well as arsenic-enhanced mitochondrial membrane potential, reactive oxygen species generation, and cell cycling. All of the arsenic effects on mitochondrial signaling and cell fate were mitigated or reversed by addition of mitochondrially targeted agents that restored mitochondrial integrity and function. Thus, arsenic-driven pathogenesis in skeletal muscle requires sustained mitochondrial EGFR activation that promotes progenitor cell cycling and proliferation at the detriment of proper differentiation. Collectively, these findings suggest that the arsenic-activated mitochondrial EGFR pathway drives pathogenic signaling for impaired myoblast metabolism and function.
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Affiliation(s)
- Amin Cheikhi
- Division of Geriatric Medicine, Department of Medicine
- Department of Environmental and Occupational Health
- Department of Physical Medicine and Rehabilitation
| | | | - Jane Lasak
- Department of Physical Medicine and Rehabilitation
| | - Baoli Qian
- Department of Environmental and Occupational Health
| | - Amrita Sahu
- Department of Physical Medicine and Rehabilitation
| | | | | | | | - Fabrisia Ambrosio
- Department of Environmental and Occupational Health
- Department of Physical Medicine and Rehabilitation
- McGowan Institute for Regenerative Medicine
- Department of Bioengineering
| | - Aaron Barchowsky
- Department of Environmental and Occupational Health
- Department of Bioengineering
- Department of Pharmacology and Chemical Biology, University of Pittsburgh, Pittsburgh, Pennsylvania 15261
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6
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Sphingosine 1-Phosphate (S1P)/ S1P Receptor Signaling and Mechanotransduction: Implications for Intrinsic Tissue Repair/Regeneration. Int J Mol Sci 2019; 20:ijms20225545. [PMID: 31703256 PMCID: PMC6888058 DOI: 10.3390/ijms20225545] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2019] [Revised: 10/31/2019] [Accepted: 11/05/2019] [Indexed: 12/16/2022] Open
Abstract
Tissue damage, irrespective from the underlying etiology, destroys tissue structure and, eventually, function. In attempt to achieve a morpho-functional recover of the damaged tissue, reparative/regenerative processes start in those tissues endowed with regenerative potential, mainly mediated by activated resident stem cells. These cells reside in a specialized niche that includes different components, cells and surrounding extracellular matrix (ECM), which, reciprocally interacting with stem cells, direct their cell behavior. Evidence suggests that ECM stiffness represents an instructive signal for the activation of stem cells sensing it by various mechanosensors, able to transduce mechanical cues into gene/protein expression responses. The actin cytoskeleton network dynamic acts as key mechanotransducer of ECM signal. The identification of signaling pathways influencing stem cell mechanobiology may offer therapeutic perspectives in the regenerative medicine field. Sphingosine 1-phosphate (S1P)/S1P receptor (S1PR) signaling, acting as modulator of ECM, ECM-cytoskeleton linking proteins and cytoskeleton dynamics appears a promising candidate. This review focuses on the current knowledge on the contribution of S1P/S1PR signaling in the control of mechanotransduction in stem/progenitor cells. The potential contribution of S1P/S1PR signaling in the mechanobiology of skeletal muscle stem cells will be argued based on the intriguing findings on S1P/S1PR action in this mechanically dynamic tissue.
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7
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Kargl CK, Nie Y, Evans S, Stout J, Shannahan JH, Kuang S, Gavin TP. Factors secreted from high glucose treated endothelial cells impair expansion and differentiation of human skeletal muscle satellite cells. J Physiol 2019; 597:5109-5124. [DOI: 10.1113/jp278165] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2019] [Accepted: 08/26/2019] [Indexed: 12/12/2022] Open
Affiliation(s)
| | - Yaohui Nie
- Department of Health and KinesiologyPurdue University
| | | | | | | | - Shihuan Kuang
- Department of Animal SciencesPurdue University West Lafayette IN USA
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8
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Kodani A, Kikuchi T, Tohda C. Acteoside Improves Muscle Atrophy and Motor Function by Inducing New Myokine Secretion in Chronic Spinal Cord Injury. J Neurotrauma 2019; 36:1935-1948. [PMID: 30318996 PMCID: PMC6599386 DOI: 10.1089/neu.2018.6000] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Chronic spinal cord injury (SCI) is difficult to cure, even by several approaches effective at the acute or subacute phase. We focused on skeletal muscle atrophy as a detrimental factor in chronic SCI and explored drugs that protect against muscle atrophy and activate secretion of axonal growth factors from skeletal muscle. We found that acteoside induced the secretion of axonal growth factors from skeletal muscle cells and proliferation of these cells. Intramuscular injection of acteoside in mice with chronic SCI recovered skeletal muscle weight reduction and motor function impairment. We also identified pyruvate kinase isoform M2 (PKM2) as a secreted factor from skeletal muscle cells, stimulated by acteoside. Extracellular PKM2 enhanced proliferation of skeletal muscle cells and axonal growth in cultured neurons. Further, we showed that PKM2 might cross the blood–brain barrier. These results indicate that effects of acteoside on chronic SCI might be mediated by PKM2 secretion from skeletal muscles. This study proposes that the candidate drug acteoside and a new myokine, PKM2, could be used for the treatment of chronic SCI.
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Affiliation(s)
- Atsushi Kodani
- Division of Neuromedical Science, Institute of Natural Medicine, University of Toyama, Toyama, Japan
| | - Takahiro Kikuchi
- Division of Neuromedical Science, Institute of Natural Medicine, University of Toyama, Toyama, Japan
| | - Chihiro Tohda
- Division of Neuromedical Science, Institute of Natural Medicine, University of Toyama, Toyama, Japan
- Address correspondence to: Chihiro Tohda, PhD, Division of Neuromedical Science, Institute of Natural Medicine, University of Toyama, 2630 Sugitani, Toyama 930-0194, Japan
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9
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Qiu L, Chen L, Yang X, Ye A, Jiang W, Sun W. S1P mediates human amniotic cells proliferation induced by a 50-Hz magnetic field exposure via ERK1/2 signaling pathway. J Cell Physiol 2019; 234:7734-7741. [PMID: 30624774 DOI: 10.1002/jcp.28102] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2018] [Accepted: 12/07/2018] [Indexed: 12/16/2022]
Abstract
Extremely low frequency electromagnetic field (ELF-EMF) is a kind of physical stimulus in public and occupational environment. Numerous studies have indicated that exposure of cells to ELF-EMF could promote cell proliferation. But the detailed mechanisms implicated in these proliferative processes remain unclear. In the present experiment, the possible roles of sphingosine-1-phosphate (S1P) in 50-Hz magnetic field (MF)-induced cell proliferation were investigated. Results showed that exposure of human amniotic (FL) cells to a 50-Hz MF with an intensity of 0.4 mT significantly enhanced ceramide metabolism, increased S1P production, activated extracellular signal regulated kinase 1/2 (ERK1/2), and promoted cell proliferation. All of these effects induced by MF exposure could be inhibited by SKI II, an inhibitor of sphingosine kinase (SphK). In addition, both the cell proliferative response and the ERK1/2 activation induced by MF exposure were blocked completely by U0126, a specific inhibitor of MEK (ERK kinases 1 and 2). Taken together, the findings in present study suggested that S1P mediated 50-Hz MF-induced cell proliferation via triggering ERK1/2 signal pathway.
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Affiliation(s)
- Liping Qiu
- Department of Preventive Health Care, Jinhua Hospital of Zhejiang University, Jinhua, China.,Bioelectromagnetics Key Laboratory, Zhejiang University School of Medicine, Hangzhou, China
| | - Liangjing Chen
- Bioelectromagnetics Key Laboratory, Zhejiang University School of Medicine, Hangzhou, China
| | - Xiaobo Yang
- Bioelectromagnetics Key Laboratory, Zhejiang University School of Medicine, Hangzhou, China
| | - Anfang Ye
- Department of Occupational Disease of the First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Wei Jiang
- Institute of Environmental Medicine, Zhejiang University School of Medicine, Hangzhou, China
| | - Wenjun Sun
- Bioelectromagnetics Key Laboratory, Zhejiang University School of Medicine, Hangzhou, China.,Institute of Environmental Medicine, Zhejiang University School of Medicine, Hangzhou, China.,Department of Occupational Disease of the First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
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10
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Cheikhi A, Wallace C, St Croix C, Cohen C, Tang WY, Wipf P, Benos PV, Ambrosio F, Barchowsky A. Mitochondria are a substrate of cellular memory. Free Radic Biol Med 2019; 130:528-541. [PMID: 30472365 DOI: 10.1016/j.freeradbiomed.2018.11.028] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/17/2018] [Revised: 11/19/2018] [Accepted: 11/21/2018] [Indexed: 12/26/2022]
Abstract
Cellular memory underlies cellular identity, and thus constitutes a unifying mechanism of genetic disposition, environmental influences, and cellular adaptation. Here, we demonstrate that enduring physicochemical changes of mitochondrial networks invoked by transient stress, a phenomenon we term 'mitoengrams', underlie the transgenerational persistence of epigenetically scripted cellular behavior. Using C2C12 myogenic stem-like cells, we show that stress memory elicited by transient, low-level arsenite exposure is stored within a self-renewing subpopulation of progeny cells in a mitochondrial-dependent fashion. Importantly, we demonstrate that erasure of mitoengrams by administration of mitochondria-targeted electron scavenger was sufficient to reset key epigenetic marks of cellular memory and redirect the identity of the mitoengram-harboring progeny cells to a non-stress-like state. Together, our findings indicate that mnemonic information emanating from mitochondria support the balance between the persistence and transience of cellular memory.
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Affiliation(s)
- Amin Cheikhi
- Division of Geriatric Medicine, Department of Medicine, University of Pittsburgh, Pittsburgh, PA 15261, USA; Department of Environmental and Occupational Health, University of Pittsburgh, Pittsburgh, PA 15261, USA.
| | - Callen Wallace
- Center for Biological Imaging, University of Pittsburgh, Pittsburgh, PA 15261, USA.
| | - Claudette St Croix
- Center for Biological Imaging, University of Pittsburgh, Pittsburgh, PA 15261, USA; Department of Cell Biology, University of Pittsburgh, Pittsburgh, PA 15261, USA.
| | - Charles Cohen
- Department of Environmental and Occupational Health, University of Pittsburgh, Pittsburgh, PA 15261, USA
| | - Wan-Yee Tang
- Department of Environmental Health and Engineering, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD 21205, USA.
| | - Peter Wipf
- Department of Chemistry, University of Pittsburgh, Pittsburgh, PA 15260, USA.
| | - Panagiotis V Benos
- Department of Computational and Systems Biology, University of Pittsburgh, Pittsburgh, PA 15261, USA.
| | - Fabrisia Ambrosio
- Department of Environmental and Occupational Health, University of Pittsburgh, Pittsburgh, PA 15261, USA; Department of Physical Medicine and Rehabilitation, University of Pittsburgh, Pittsburgh, PA, USA; McGowan Institute for Regenerative Medicine, University of Pittsburgh, Pittsburgh, PA 15219, USA; Department of Bioengineering, University of Pittsburgh, Pittsburgh, PA 15261, USA.
| | - Aaron Barchowsky
- Department of Environmental and Occupational Health, University of Pittsburgh, Pittsburgh, PA 15261, USA; Department of Pharmacology and Chemical Biology, University of Pittsburgh, Pittsburgh, PA 15261, USA.
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11
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Lidgerwood GE, Pitson SM, Bonder C, Pébay A. Roles of lysophosphatidic acid and sphingosine-1-phosphate in stem cell biology. Prog Lipid Res 2018; 72:42-54. [PMID: 30196008 DOI: 10.1016/j.plipres.2018.09.001] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2018] [Revised: 08/15/2018] [Accepted: 09/05/2018] [Indexed: 02/06/2023]
Abstract
Stem cells are unique in their ability to self-renew and differentiate into various cell types. Because of these features, stem cells are key to the formation of organisms and play fundamental roles in tissue regeneration and repair. Mechanisms controlling their fate are thus fundamental to the development and homeostasis of tissues and organs. Lysophosphatidic acid (LPA) and sphingosine-1-phosphate (S1P) are bioactive phospholipids that play a wide range of roles in multiple cell types, during developmental and pathophysiological events. Considerable evidence now demonstrates the potent roles of LPA and S1P in the biology of pluripotent and adult stem cells, from maintenance to repair. Here we review their roles for each main category of stem cells and explore how those effects impact development and physiopathology.
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Affiliation(s)
- Grace E Lidgerwood
- Centre for Eye Research Australia, Royal Victorian Eye and Ear Hospital, East Melbourne, Australia; Ophthalmology, Department of Surgery, the University of Melbourne, Melbourne, Australia
| | - Stuart M Pitson
- Centre for Cancer Biology, University of South Australia and SA Pathology, Adelaide, Australia
| | - Claudine Bonder
- Centre for Cancer Biology, University of South Australia and SA Pathology, Adelaide, Australia
| | - Alice Pébay
- Centre for Eye Research Australia, Royal Victorian Eye and Ear Hospital, East Melbourne, Australia; Ophthalmology, Department of Surgery, the University of Melbourne, Melbourne, Australia.
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12
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Loiben AM, Soueid-Baumgarten S, Kopyto RF, Bhattacharya D, Kim JC, Cosgrove BD. Data-Modeling Identifies Conflicting Signaling Axes Governing Myoblast Proliferation and Differentiation Responses to Diverse Ligand Stimuli. Cell Mol Bioeng 2017; 10:433-450. [PMID: 31719871 DOI: 10.1007/s12195-017-0508-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2017] [Accepted: 08/27/2017] [Indexed: 01/03/2023] Open
Abstract
Introduction Skeletal muscle tissue development and regeneration relies on the proliferation, maturation and fusion of muscle progenitor cells (myoblasts), which arise transiently from muscle stem cells (satellite cells). Following muscle damage, myoblasts proliferate and differentiate in response to temporally-varying inflammatory cytokines, growth factors, and extracellular matrix cues, which stimulate a shared network of intracellular signaling pathways. Here we present an integrated data-modeling approach to elucidate synergies and antagonisms among proliferation and differentiation signaling axes in myoblasts stimulated by regeneration-associated ligands. Methods We treated mouse primary myoblasts in culture with combinations of eight regeneration-associated growth factors and cytokines in mixtures that induced additive, synergistic, and antagonistic effects on myoblast proliferation and differentiation responses. For these combinatorial stimuli, we measured the activation dynamics of seven signal transduction pathways using multiplexed phosphoprotein assays and scored proliferation and differentiation responses based on expression of myogenic commitment factors to assemble a cue-signaling-response data compendium. We interrogated the relationship between these signals and responses by partial least-squares (PLS) regression modeling. Results Partial least-squares data-modeling accurately predicted response outcomes in cross-validation on the training compendium (cumulative R 2 = 0.96). The PLS model highlighted signaling axes that distinctly govern myoblast proliferation (MEK-ERK, Stat3) and differentiation (JNK) in response to these combinatorial cues, and we confirmed these signal-response associations with small molecule perturbations. Unexpectedly, we observed that a negative feedback circuit involving the phosphatase DUSP6/MKP-3 auto-regulates MEK-ERK signaling in myoblasts. Conclusion This data-modeling approach identified conflicting signaling axes that underlie muscle progenitor cell proliferation and differentiation.
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Affiliation(s)
- Alexander M Loiben
- 1Meinig School of Biomedical Engineering, Cornell University, Ithaca, NY 14853 USA
| | | | - Ruth F Kopyto
- 2Biological Sciences, College of Agriculture and Life Sciences, Cornell University, Ithaca, NY 14853 USA
| | - Debadrita Bhattacharya
- 3Graduate Field of Biochemistry, Molecular and Cell Biology, Department of Molecular Biology and Genetics, Cornell University, Ithaca, NY 14853 USA
| | - Joseph C Kim
- 1Meinig School of Biomedical Engineering, Cornell University, Ithaca, NY 14853 USA
| | - Benjamin D Cosgrove
- 1Meinig School of Biomedical Engineering, Cornell University, Ithaca, NY 14853 USA
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13
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Zinc promotes proliferation and activation of myogenic cells via the PI3K/Akt and ERK signaling cascade. Exp Cell Res 2015; 333:228-237. [PMID: 25773777 DOI: 10.1016/j.yexcr.2015.03.003] [Citation(s) in RCA: 63] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2014] [Revised: 03/02/2015] [Accepted: 03/04/2015] [Indexed: 12/20/2022]
Abstract
Skeletal muscle stem cells named muscle satellite cells are normally quiescent but are activated in response to various stimuli, such as injury and overload. Activated satellite cells enter the cell cycle and proliferate to produce a large number of myogenic progenitor cells, and these cells then differentiate and fuse to form myofibers. Zinc is one of the essential elements in the human body, and has multiple roles, including cell growth and DNA synthesis. However, the role of zinc in myogenic cells is not well understood, and is the focus of this study. We first examined the effects of zinc on differentiation of murine C2C12 myoblasts and found that zinc promoted proliferation, with an increased number of cells incorporating EdU, but inhibited differentiation with reduced myogenin expression and myotube formation. Furthermore, we used the C2C12 reserve cell model of myogenic quiescence to investigate the role of zinc on activation of myogenic cells. The number of reserve cells incorporating BrdU was increased by zinc in a dose dependent manner, with the number dramatically further increased using a combination of zinc and insulin. Akt and extracellular signal-regulated kinase (ERK) are downstream of insulin signaling, and both were phosphorylated after zinc treatment. The zinc/insulin combination-induced activation involved the phosphoinositide 3-kinase (PI3K)/Akt and ERK cascade. We conclude that zinc promotes activation and proliferation of myogenic cells, and this activation requires phosphorylation of PI3K/Akt and ERK as part of the signaling cascade.
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