Mus musculus
Ontology highlight
ABSTRACT:
PROVIDER: PRJNA329011 | ENA |
REPOSITORIES: ENA
Dataset's files
| Action | DRS | |||
|---|---|---|---|---|
| SRR3901910_1.fastq.gz | Fastqsanger.gz | |||
| SRR3901910_2.fastq.gz | Fastqsanger.gz | |||
| SRR3901911_1.fastq.gz | Fastqsanger.gz | |||
| SRR3901911_2.fastq.gz | Fastqsanger.gz | |||
| SRR3901912_1.fastq.gz | Fastqsanger.gz |
Items per page: 5 1 - 5 of 24 |
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Project description:A Unique Twist-Dependent Progenitor Cell Contributes to Adult Skeletal Muscle [Tw2 vs Pax7]
| PRJNA329010 | ENA
Project description:A Unique Twist-Dependent Progenitor Cell Contributes to Adult Skeletal Muscle [Tw2 overexpression]
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Project description:Skeletal muscle possesses remarkable regenerative potential due to satellite cells, a stem cell population located beneath the muscle basal lamina. By lineage tracing of progenitor cells expressing the Twist2 (Tw2) transcription factor in mice, we discovered a unique myogenic lineage that resides outside the basal lamina of adult muscle and contributes specifically to type IIb/x myofibers during adulthood and muscle regeneration. Tw2+ progenitors are molecularly and anatomically distinct from satellite cells, are highly myogenic in vitro and can fuse with satellite cells. Transplantation of Tw2+ progenitors into adult mice is sufficient to reconstitute new myofibers, and genetic ablation of endogenous Tw2+ progenitors causes wasting of type IIb myofibers. We show that Tw2 expression maintains progenitor cells in an undifferentiated state that is poised to initiate myogenesis in response to appropriate cues that suppress Tw2 expression. Tw2-expressing progenitors represent a previously unrecognized, fiber-type specific progenitor cell involved in muscle growth and regeneration.
2017-01-13 | GSE84378 | GEO
Project description:Skeletal muscle possesses remarkable regenerative potential due to satellite cells, a stem cell population located beneath the muscle basal lamina. By lineage tracing of progenitor cells expressing the Twist2 (Tw2) transcription factor in mice, we discovered a unique myogenic lineage that resides outside the basal lamina of adult muscle and contributes specifically to type IIb/x myofibers during adulthood and muscle regeneration. Tw2+ progenitors are molecularly and anatomically distinct from satellite cells, are highly myogenic in vitro and can fuse with satellite cells. Transplantation of Tw2+ progenitors into adult mice is sufficient to reconstitute new myofibers, and genetic ablation of endogenous Tw2+ progenitors causes wasting of type IIb myofibers. We show that Tw2 expression maintains progenitor cells in an undifferentiated state that is poised to initiate myogenesis in response to appropriate cues that suppress Tw2 expression. Tw2-expressing progenitors represent a previously unrecognized, fiber-type specific progenitor cell involved in muscle growth and regeneration.
2017-01-13 | GSE84379 | GEO
Project description:Skeletal muscle possesses remarkable regenerative potential due to satellite cells, a stem cell population located beneath the muscle basal lamina. By lineage tracing of progenitor cells expressing the Twist2 (Tw2) transcription factor in mice, we discovered a unique myogenic lineage that resides outside the basal lamina of adult muscle and contributes specifically to type IIb/x myofibers during adulthood and muscle regeneration. Tw2+ progenitors are molecularly and anatomically distinct from satellite cells, are highly myogenic in vitro and can fuse with satellite cells. Transplantation of Tw2+ progenitors into adult mice is sufficient to reconstitute new myofibers, and genetic ablation of endogenous Tw2+ progenitors causes wasting of type IIb myofibers. We show that Tw2 expression maintains progenitor cells in an undifferentiated state that is poised to initiate myogenesis in response to appropriate cues that suppress Tw2 expression. Tw2-expressing progenitors represent a previously unrecognized, fiber-type specific progenitor cell involved in muscle growth and regeneration.
2017-01-13 | GSE84377 | GEO
Project description:A Unique Twist-Dependent Progenitor Cell Contributes to Adult Skeletal Muscle
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Project description:Twist transcription factors function as ancestral regulators of mesodermal cell fates in organisms ranging from Drosophlia to mammals. Through lineage tracing of Twist2 (Tw2) expressing cells with tamoxifen-inducible Tw2-CreERT2 and tdTomato reporter mice, we discovered a unique cell population that progressively contributes to multiple cell types in the adult heart, including cardiomyocytes, endothelial cells and fibroblasts. Clonal analysis confirmed the ability of Tw2-derived tdTO+ (Tw2-tdTO+) cells to form CMs in vitro. Within the adult heart, Tw2-tdTO+ cardiomyocytes accounted for ~13% of total cardiomyocytes, the majority of which resulted from fusion of Tw2-tdTO+ cells with existing cardiomyocytes. Tw2-tdTO+ cells also contribute to cardiac remodeling after injury. We conclude that a Tw2-tdTO+ cells participate in lifelong maintenance of cardiac function, at least in part through de novo formation of cardiomyocytes and fusion with preexisting cardiomyocytes, as well as in the genesis of other cellular components of the adult heart.
2020-01-08 | GSE118410 | GEO
Project description:Twist transcription factors function as ancestral regulators of mesodermal cell fates in organisms ranging from Drosophlia to mammals. Through lineage tracing of Twist2 (Tw2) expressing cells with tamoxifen-inducible Tw2-CreERT2 and tdTomato reporter mice, we discovered a unique cell population that progressively contributes to multiple cell types in the adult heart, including cardiomyocytes, endothelial cells and fibroblasts. Clonal analysis confirmed the ability of Tw2-derived tdTO+ (Tw2-tdTO+) cells to form CMs in vitro. Within the adult heart, Tw2-tdTO+ cardiomyocytes accounted for ~13% of total cardiomyocytes, the majority of which resulted from fusion of Tw2-tdTO+ cells with existing cardiomyocytes. Tw2-tdTO+ cells also contribute to cardiac remodeling after injury. We conclude that a Tw2-tdTO+ cells participate in lifelong maintenance of cardiac function, at least in part through de novo formation of cardiomyocytes and fusion with preexisting cardiomyocytes, as well as in the genesis of other cellular components of the adult heart.
2020-01-08 | GSE97160 | GEO
Project description:Tissue engineering strategies that combine human pluripotent stem cell-derived myogenic progenitors (hPDMs) with advanced biomaterials provide promising tools for engineering 3D skeletal muscle grafts to model tissue development in vitro and promote muscle regeneration in vivo. We recently demonstrated (i) the potential for obtaining large numbers of hPDMs using a combination of two small molecules and (ii) the application of electrospun fibrin microfiber bundles for functional skeletal muscle restoration following volumetric muscle loss. In this study, we demonstrate that the biophysical cues provided by the microfiber bundles can induce unsorted hPDMs to form multinucleated myotubes that express desmin and myosin heavy chain. To reduce the batch-to-batch variability of these samples, we tested a genetic PAX7 reporter line (PAX7::GFP) to sort for more homogenous populations of hPDMs. RNA sequencing and gene set enrichment analyses confirmed that PAX7::GFP-sorted hPDMs exhibited higher expression of myogenic genes while unsorted hPDMs demonstrated increased expression of genes associated with embryonic, neural crest, and fibroadipogenic progenitor lineages. We tested engineered skeletal muscle grafts derived from either PAX7::GFP-sorted or unsorted hPDMs within in vivo skeletal muscle defects. The unsorted hPDM-derived grafts also exhibited greater fibrosis and more proinflammatory responses. In contrast, the PAX7::GFP-sorted groups had moderately high vascular infiltration, more implanted cell association with embryonic myosin heavy chain (eMHC) regions, and greater CD206:CD86 ratios compared to unsorted hPDMs and acellular fibers suggesting they induced more pro-regenerative microenvironments. These findings demonstrated some promise for the use of PAX7::GFP-sorted hPDMS on fibrin microfiber bundles and provided some insights for improving the cell-biomaterial system to stimulate more robust in vivo skeletal muscle regeneration.
2022-12-09 | GSE178784 | GEO
Project description:Direct lineage reprogramming provides a unique system to study cell fate transitions and unearth molecular mechanisms that safeguard cellular identity. We previously reported on direct conversion of mouse fibroblasts into induced myogenic progenitor cells (iMPCs) by transient MyoD overexpression in concert with small molecules treatment. Here we employed integrative multi-omic approaches to delineate the molecular landscape of fibroblast reprogramming into iMPCs in comparison to transdifferentiation into myogenic cells solely by MyoD overexpression. Utilizing bulk RNA-sequencing and mass spectrometry, we uncovered molecular regulators and pathways that endow a myogenic stem cell identity on fibroblasts only in the presence of small molecule treatment. In addition, we demonstrate that Pax7+ cells in iMPCs share molecular attributes with myoblasts, however in addition express unique genes, proteins and pathways that are indicative of a more activated satellite cell-like state in vitro. Collectively, this study charts a molecular blueprint for reprogramming fibroblasts into muscle stem and progenitor cells and further establishes the fidelity of stable iMPC cultures in capturing skeletal muscle regeneration in vitro for disease modeling and basic research applications.
2022-05-19 | PXD029379 | Pride