• Develop transcription factor over-expression in combination with improved directed differentiation strategies to generate MuSCs from hPSCs with genetic and functional signatures of the in vivo MuSCs. (ca.gov)
  • Long non-coding RNAs (lncRNAs) are involved in the process of muscle cell differentiation and play an important role. (bvsalud.org)
  • Previous studies have shown that lncRNA-MEG3 promotes the differentiation of porcine skeletal muscle satellite cells (PSCs), but the regulatory mechanism of MEG3 interaction with target protein has not been well studied. (bvsalud.org)
  • Furthermore, we have successfully predicted and validated that the transcription factor myogenic differentiation (MYOD) binds to the MEG3 core promoter though utilizing chromatin immunoprecipitation (CHIP) and luciferase reporter assays. (bvsalud.org)
  • The bHLH transcription factor MyoD is a master regulator of myogenic differentiation, and its sustained expression in fibroblasts suffices to differentiate them into muscle cells. (bvsalud.org)
  • Unstable MyoD oscillations and long periods of sustained MyoD expression are observed when stem cells undergo myogenic differentiation. (bvsalud.org)
  • Thus, oscillations of MyoD and Hes1 control the balance between the proliferation and differentiation of muscle stem cells. (bvsalud.org)
  • The Wnt signaling pathway is involved in the control of cell proliferation and differentiation during skeletal muscle development. (biomedcentral.com)
  • These cells have the ability to self-renew and to differentiate into specialized cell types and can be primarily classified as adult and pluripotent stem cells which differ significantly in regard to their differentiation potential and expansion capability. (biotech-angels.com)
  • 35-39] Meanwhile a little subset of satellite television cells will not undergo differentiation but wthhold the ability to go back to a quiescent state and therefore preserve the satellite television cell pool. (biotech-angels.com)
  • Their fate is regulated by the expression of various transcription factors, including paired box 7 (Pax7) and myogenic differentiation (MyoD) [ 6 ]. (biomedcentral.com)
  • Here, we investigated the benefits and mechanisms of the preventive effects of YBMT on loss of muscle mass and function in a senescence-associated mouse prone 10 (SAMP10) model, with a special focus on the role of growth differentiation factor 11 (GDF-11). (nagoya-u.ac.jp)
  • Objective: The aim of this study was to reveal the role and regulatory mechanism of miR-188-5p in the proliferation and differentiation of goat muscle satellite cells. (koreascience.kr)
  • Results: It was highly expressed in adult goat latissimus dorsi and leg muscles, goat fetal skeletal muscle, and at the differentiation stage of muscle satellite cells. (koreascience.kr)
  • Overexpression and interference of miR-188-5p showed that miR-188-5p inhibited the proliferation and promoted the differentiation of goat muscle satellite cells. (koreascience.kr)
  • Further functional studies revealed that CAMK2B promoted the proliferation and inhibited the differentiation of goat muscle satellite cells, whereas si-CAMK2B restored the function of miR-188-5p inhibitor. (koreascience.kr)
  • Conclusion: These results suggest that miR-188-5p inhibits the proliferation and promotes the differentiation of goat muscle satellite cells by targeting CAMK2B. (koreascience.kr)
  • Using synchronized cultures of C2C12 myoblasts to model these divergent programs, we show that p8 (also known as Nupr1 ), a G1-induced gene, negatively regulates the cell cycle and promotes myogenic differentiation. (biologists.com)
  • Myofiber-specific ablation of IRE1α or XBP1 in mice diminishes skeletal muscle regeneration that is accompanied with reduced number of satellite cells. (elifesciences.org)
  • Finally, targeted ablation of IRE1α also reduces Notch signaling, abundance of satellite cells, and skeletal muscle regeneration in the mdx mice, a model of Duchenne muscular dystrophy. (elifesciences.org)
  • Collectively, our experiments suggest that the IRE1α-mediated signaling promotes muscle regeneration through augmenting the proliferation of satellite cells in a cell non-autonomous manner. (elifesciences.org)
  • The findings shed new light on mechanisms of regeneration of healthy myofibers after severe tissue injury and suggest interplay between these fibers and muscle satellite cells though mechanisms remain to be elucidated. (elifesciences.org)
  • Conditional Met KO mice were generated using Cre‑loxP methodology and characterization of these mice indicated that the HGF‑Met signaling pathway is essential in regeneration, protection, and homeostasis in various tissue types and cells. (spandidos-publications.com)
  • 1 2 Residing outside the sarcolemma but within the basal lamina of individual myofibers is a population of cells that are responsible for muscle repair and regeneration, the satellite cells. (arvojournals.org)
  • 6 These manipulations result in satellite cell activation and proliferation, which in turn are responsible for muscle repair and regeneration. (arvojournals.org)
  • Epimorphic regeneration can be thought of as occurring in two phases: wound healing and cell proliferation. (biomedcentral.com)
  • Satellite cells (SCs), which are precursors of skeletal muscles, such as the TA muscle, play a key role in muscle homeostasis and regeneration. (biomedcentral.com)
  • SCs are normally in a quiescent state in adult muscles, and start proliferating during muscle regeneration in response to denervation. (biomedcentral.com)
  • Aberrant PAX3 and PAX7 expression. (wikipedia.org)
  • 30] The additional approach used a transgenic reporter mouse for Pax3 a paralog of Pax7 which allowed for the immediate isolation of Pax3+ (GFP+) muscle satellite television cells by movement cytometry. (biotech-angels.com)
  • We demonstrate that mdPCR can give exact molecule counts per cell for mRNA isoforms encoding the myogenic transcription factor Pax3. (biomed.news)
  • Pax7 is a transcription factor that plays a role in myogenesis through regulation of muscle precursor cells proliferation. (wikipedia.org)
  • WAT is characterised by its capacity to adapt and expand in response to surplus energy through processes of adipocyte hypertrophy and/or recruitment and proliferation of precursor cells in combination with vascular and extracellular matrix remodelling. (springer.com)
  • We will molecularly and functionally define muscle stem cells in human muscle in development, juvenile and adult and develop strategies to generate the most regenerative muscle stem cells from hPSCs. (ca.gov)
  • Skeletal muscle, the most abundant tissue of the body, has remarkable regenerative capacity mainly due to its resident muscle stem cells, also known as satellite cells. (elifesciences.org)
  • HGF is produced and secreted by adjacent stromal and mesenchymal cells, it contributes to the development of epithelial organs in a paracrine fashion, exerts regenerative effects on epithelia in the liver, kidney, lung, and other tissues, and promotes the regression of fibrosis in numerous organs ( 7 , 8 ). (spandidos-publications.com)
  • Below we review the literature on some of the most studied stem cell populations that have been ascribed with muscle regenerative potential pointing out their advantages as well as caveats. (biotech-angels.com)
  • 1 Adult Stem Cells 1.1 Satellite Cells Studies in the last decade have clearly proven that the regenerative ability of adult skeletal muscle is due to the satellite cell a quiescent stem cell population of muscle precursors located between the basal lamina and sarcolemma of each myofiber. (biotech-angels.com)
  • 45 47 48 It took about fifty years using their initial identification in the first 1960s for genuine preparations of mouse satellite television cells to become isolated and tested for his or her URMC-099 regenerative potential. (biotech-angels.com)
  • Research on regenerative medicine using basic fibroblast growth factor (bFGF) has recently advanced in the field of laryngology. (biomedcentral.com)
  • The basic fibroblast growth factor (bFGF) is a member of the fibroblast growth factor family and is a key protein in regenerative medicine. (biomedcentral.com)
  • Adult regenerative myogenesis is dependent on progenitor cells. (biologists.com)
  • Here, we describe time-lapse imaging methods using luciferase reporters, which can monitor dynamic MyoD gene expression in myogenic cells. (bvsalud.org)
  • Dual luciferase assay and Western-blot results demonstrated that SFRP1 was a target of miR-1/206 in porcine iliac endothelial cells. (biomedcentral.com)
  • 31] Down the road Sacco and colleagues proven that intra-muscular transplantation of an individual luciferase-expressing muscle stem cell isolated from Myf5 reporter mice led to intensive proliferation and contribution to muscle materials. (biotech-angels.com)
  • Furthermore these authors demonstrated that Pax7(+)luciferase(+) mononuclear cells could possibly be readily re-isolated offering proof for the self-renewal of the cell human population. (biotech-angels.com)
  • We are developing a target product profile for human satellite cells derived from human pluripotent stem cells which will be used to use muscle stem cells in personalized medicine for patients with devastating muscle wasting or degenerative diseases. (ca.gov)
  • A Human Skeletal Muscle Atlas Identifies the Trajectories of Stem and Progenitor Cells across Development and from Human Pluripotent Stem Cells. (ca.gov)
  • Adult stem cells are tissue specific and have limited capacity to be expanded while pluripotent stem cells have the ability to differentiate into any cell type of the body while possessing unlimited self-renewal. (biotech-angels.com)
  • 3 20 21 Major factors underlining this poor outcome included low ability of myoblasts to migrate beyond the injection site[22 23 and poor survival of injected cells. (biotech-angels.com)
  • 26-29] As an alternative to poorly-engrafting myoblasts much recent interest has developed around the idea of therapy with stem cells. (biotech-angels.com)
  • 34] Upon damage satellite television cells become activated providing rise to proliferating myoblasts which in turn fuse to existing muscle tissue fibers or even to additional myoblasts to URMC-099 create new myofibers to correct muscle tissue harm. (biotech-angels.com)
  • After several rounds of proliferation, most SCs differentiate into myoblasts, which fuse to form new myofibers [ 5 ]. (biomedcentral.com)
  • We previously reported that local injection of single, high-dose bFGF into the paralyzed vocal fold 1 month after RLN transection compensated for an atrophied TA muscle by inducing activation of SC proliferation and increasing the number of myoblasts in the RLN paralysis model of rats [ 12 ]. (biomedcentral.com)
  • We have developed a comprehensive profile of human myogenesis using single cell sequencing. (ca.gov)
  • We will perform single cell RNA sequencing (scRNA-seq) of embryonic, fetal, juvenile and adult muscle stem cells (MuSCs) and identify unique gene signatures and cell states across human myogenesis. (ca.gov)
  • Cell culture experiments indicated that Gln could promote cell proliferation in a dose dependent manner, but expression of myogenesis regulatory genes was not altered. (nature.com)
  • Paired box protein Pax-7 is a protein that in humans is encoded by the PAX7 gene. (wikipedia.org)
  • Here, we examined the time-dependent expression patterns of multiple biomarkers associated with satellite cell fate, including the transcription factor paired box 7 (Pax7), myoblast determination protein (MyoD), myogenin, and insulin-like growth factor (IGF-1), using immunohistochemistry, western blotting, and quantitative real-time PCR in contused skeletal muscle. (bvsalud.org)
  • Pax7, MyoD, myogenin, and IGF-1 expression patterns were upregulated after injury at both the mRNA and protein levels. (bvsalud.org)
  • Pax7, MyoD, and myogenin protein expression levels confirmed the results of the morphometrical analysis. (bvsalud.org)
  • We identified both gene and protein markers for three temporally distinct ProSG cell subsets, including a migratory cell population with a transcriptome distinct from the previously defined T1- and T2-ProSG stages. (biologists.com)
  • Like Rb protein, many of the proteins encoded by tumor suppressor genes act at specific points in the cell cycle. (medscape.com)
  • For example, the TP53 gene, located on chromosome 17, encodes a 53-kd nuclear protein that functions as a cell cycle checkpoint. (medscape.com)
  • The CDK4-cyclinD complex normally phosphorylates the retinoblastoma protein (Rb protein), leading to release of the E2F transcription factor and cell cycle progression. (medscape.com)
  • The p19ARF protein, which is encoded by the same locus as p16, also leads to cell cycle arrest by inhibiting the ability of MDM2 to inactivate TP53. (medscape.com)
  • The p16INK4A protein is a cell-cycle inhibitor that acts by inhibiting activated cyclin D:CDK4/6 complexes, which play a crucial role in the control of the cell cycle by phosphorylating Rb protein. (medscape.com)
  • Cell therapy with young bone marrow from green fluorescent protein (GFP) transgenic mice exhibited GFP+ myofibres in aged muscle tissues. (nagoya-u.ac.jp)
  • The results indicated that MYOD acts as a transcription factor of MEG3 to promote MEG3 transcription. (bvsalud.org)
  • It is concluded that MYOD acts as a transcription factor to induce MEG3 expression. (bvsalud.org)
  • MyoD expression oscillates in activated muscle stem cells of developing, postnatal and adult muscle under various conditions: when the stem cells are dispersed in culture, when they remain associated with single muscle fibers, or when they reside in muscle biopsies. (bvsalud.org)
  • The oscillatory expression of MyoD is driven by the oscillatory expression of the bHLH transcription factor Hes1 that periodically represses MyoD. (bvsalud.org)
  • Morphometrically, the data obtained from the numbers of Pax7 + , MyoD + , and myogenin + cells were highly correlated with the wound age. (bvsalud.org)
  • In the resected muscle and in the passively stretched antagonist muscle, there was a dramatic increase in the number of myofibers positive for neonatal MyHC and in the number of BrdU- and MyoD-positive satellite cells. (arvojournals.org)
  • We will identify unique cell surface markers on in vivo derived MuSCs that distinguish PAX7-positive cells from other muscle cells and across cell states. (ca.gov)
  • Ex vivo cultures of myofiber explants demonstrate that ablation of IRE1α reduces the proliferative capacity of myofiber-associated satellite cells. (elifesciences.org)
  • In addition, mtDNA stress in TFAM-deficient mouse melanoma cells produces tumours that are more resistant to doxorubicin in vivo. (regenerativemedicine.net)
  • Quantifying the exact expression levels of the mRNA isoforms encoding these myogenic transcription factors is therefore key to understanding how MuSCs switch between cell states. (biomed.news)
  • Evaluate myogenic ability and functional differences of embryonic, fetal, juvenile and adult MuSCs in fusion, proliferation, engraftment and repopulation assays in mouse models of muscle disease. (ca.gov)
  • For example, muscle stem cells (MuSCs), located beneath the basal lamina, exist in the quiescent state but can transition to an activated, proliferative state upon injury. (biomed.news)
  • Overall, Gln supplementation stimulated cell proliferation in muscle tissue and in vitro in myogenic cell culture, whereas muscle growth regulatory genes were barely altered. (nature.com)
  • Therefore, we complemented our investigations into the cellular development of the skeletal muscle of neonatal piglets with in vitro studies using a primary porcine myogenic cell culture model with Gln supplementation. (nature.com)
  • 10 Even more compelling is a recent study that subjected individual quiescent satellite cells isolated from adult limb muscle to stretching in vitro, and showed that direct stretching of the satellite cells themselves results in activation and bromodeoxyuridine (BrdU) incorporation. (arvojournals.org)
  • These cells are located beneath the basal lamina of myofiber in a dormant state. (elifesciences.org)
  • However, PAX7 is not required for spermatogenesis, as mice without PAX7+ spermatogonia show no deficits in fertility. (wikipedia.org)
  • Additionally, mice lacking PAX7 had delayed recovery of spermatogenesis following exposure to busulfan when compared to control mice. (wikipedia.org)
  • Myofiber-specific ablation of IRE1α dampens Notch signaling and canonical NF-κB pathway in skeletal muscle of adult mice. (elifesciences.org)
  • Using single-cell RNA sequencing (RNAseq), we studied the development of ProSG, their SG descendants and testicular somatic cells during the perinatal period in mice. (biologists.com)
  • 31] Cells isolated from mature skeletal muscles displayed homogenous expression of Pax7 and contributed to both dietary fiber repair also to the muscle satellite television cell URMC-099 compartment subsequent their transplantation into dystrophic mice. (biotech-angels.com)
  • Conclusions: These findings suggest that YBMT can prevent muscle wasting and dysfunction by mitigating apoptosis and proliferation via a modulation of GDF-11 signalling and mitochondrial dysfunction in SAMP10 mice. (nagoya-u.ac.jp)
  • We determined the developmental and functional status of both skeletal muscle progenitor cells as well as adult human satellite cells. (ca.gov)
  • Methods: Goat skeletal muscle satellite cells isolated in the pre-laboratory were used as the test material. (koreascience.kr)
  • In addition, miR-188-5p was transfected into goat skeletal muscle satellite cells by constructing mimics and inhibitors of miR-188-5p, respectively. (koreascience.kr)
  • Pax-7 plays a role in neural crest development and gastrulation, and it is an important factor in the expression of neural crest markers such as Slug, Sox9, Sox10 and HNK-1. (wikipedia.org)
  • PAX7 may also function in the recovery in spermatogenesis. (wikipedia.org)
  • PAX7 functions as a marker for a rare subset of spermatogonial stem cells, specifically a sub set of Asingle spermatogonia. (wikipedia.org)
  • This intermediate (I)-ProSG subset translocates from the center of seminiferous tubules to the spermatogonial stem cell (SSC) 'niche' in its periphery soon after birth. (biologists.com)
  • Inactivation of tumor suppressor genes, whose products normally provide negative control of cell proliferation, contributes to malignant transformation in various cell types. (medscape.com)
  • Irradiation treatment, which eliminates satellite cells from these muscles, prevents the compensatory hypertrophy in these types of experiments. (arvojournals.org)
  • Muscle samples were collected and myogenic cells were isolated and cultivated. (nature.com)
  • There is certainly proof for heterogeneity inside the satellite television cell compartment having a subset of satellite television cells having higher potential to engraft the satellite television cell area. (biotech-angels.com)
  • Both miRNAs and siRNAs need to be delivered into the target tissue or cell in order to activate the desired therapeutic effect," Muthiah Manoharan, Ph.D., senior vp, drug discovery, Alnylam Pharmaceuticals, explained. (genengnews.com)
  • More proliferation was observed in muscle tissue of LBW-GLN than LBW-ALA piglets at 5 dpn, but there was no clear effect of supplementation on related gene expression. (nature.com)
  • The compromised tissue repair program is attributable to the gradual depletion of stem cells and to altered regulatory signals. (biomed.news)
  • Adult stem cells play key roles in homeostasis and tissue repair. (biomed.news)
  • Proliferating, BrdU-positive cells in muscle sections were detected with immunohistochemistry indicating different cell types and decreasing proliferation with age. (nature.com)
  • Immunohistochemistry indicated that bFGF significantly increased the number of satellite cells in the thyroarytenoid muscle up to day 14 and that of neuromuscular junctions on days 28 and 56. (biomedcentral.com)
  • These PAX7+ spermatogonia are rare in adult testis but are much more prevalent in newborns, making up 28% of germ cells in neonate testis. (wikipedia.org)
  • We also molecularly defined the development of Sertoli, Leydig and peritubular myoid cells during the perinatal period, allowing us to identify candidate signaling pathways acting between somatic and germ cells in a stage-specific manner during the perinatal period. (biologists.com)
  • Originally discovered as axon guidance factors, they have been implicated in cancer progression, embryonal organogenesis, skeletal muscle innervation, and other physiological and developmental functions in different tissues. (biomed.news)
  • Once the wound is healed, the cells of the stump must mobilise under the wound epidermis and begin the process of replacing lost tissues, by forming a proliferating blastema. (biomedcentral.com)
  • the interaction links PAX7 to a WDR5-containing histone methyltransferase complex By similarity. (wikipedia.org)
  • Semaphorins are a wide family of extracellular regulatory signals with a multifaceted role in cell-cell communication. (biomed.news)
  • The insertional 6 mm of the superior rectus muscles of adult rabbits were resected and reattached to the original insertion site. (arvojournals.org)
  • Both active and passive stretch of the rectus muscles produced by strabismus surgery dramatically upregulated the processes of satellite cell activation, integration of new myonuclei into existing myofibers, and concomitant upregulation of immature myosin heavy chain isoforms. (arvojournals.org)
  • There are a number of factors that initiate myofiber remodeling in adult skeletal muscles. (arvojournals.org)
  • 30 31 One group took the approach of transplanting sole muscle fibers which demonstrated that every myofiber including 7 or fewer satellite television cells could create over 100 new myofibers in engrafted muscles. (biotech-angels.com)
  • A single, early local administration of high-dose bFGF prevented atrophic changes in the thyroarytenoid muscles by activating satellite cell proliferation and reforming neuromuscular junctions. (biomedcentral.com)
  • We identified three undifferentiated SG subsets at postnatal day 7, each of which expresses distinct genes, including transcription factor and signaling genes. (biologists.com)
  • Another important class of tumor suppressor genes involved in cell cycle control and in the generation of human cancers is the cyclin-dependent kinase (CDK) inhibitors. (medscape.com)
  • The gland is formed by multiple cell types, including basophilic, eosinophilic, and chromophobic cells (hematoxylin-eosin stain). (medscape.com)
  • Thousands of copies of the circular mtDNA are present in most cell types that are packaged by TFAM into higher-order structures called nucleoids1. (regenerativemedicine.net)
  • 30-32] The satellite cell was first described by Mauro in 1961 using electron microscopy[33] and later by Bishoff in 1986 utilizing phase-contrast microscopy on solitary myofiber explants. (biotech-angels.com)
  • Therefore, we propose that damage to and subsequent release of mtDNA elicits a protective signalling response that enhances nDNA repair in cells and tissues, suggesting that mtDNA is a genotoxic stress sentinel. (regenerativemedicine.net)
  • Jyotsna Dhawan ABSTRACT Adult stem cells persist in mammalian tissues by entering a state of reversible quiescence, referred to as G 0 , which is associated with low levels of transcription. (biologists.com)
  • Unlike PAX7+ muscle satellite cells, PAX7+ spermatogonia rapidly proliferate and are not quiescent. (wikipedia.org)
  • 7 8 9 In fact, passive stretching alone can activate limb muscle satellite cells. (arvojournals.org)