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RNA-seq comparison of whole muscle between WT mice, dystrophic mice, and P2rx7-null dystrophic mice

ABSTRACT: RNA-seq comparison of whole muscle between WT mice, dystrophic mice, and P2rx7-null dystrophic mice

PROVIDER: PRJEB31323 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	ERR3163260_1.fastq.gz	Fastqsanger.gz
	ERR3163260_2.fastq.gz	Fastqsanger.gz
	ERR3163270_1.fastq.gz	Fastqsanger.gz
	ERR3163270_2.fastq.gz	Fastqsanger.gz
	ERR3163261_1.fastq.gz	Fastqsanger.gz

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RNA-seq comparison of whole muscle between WT mice, dystrophic mice, and P2rx7-null dystrophic mice

Project description:Duchenne muscular dystrophy (DMD) is a debilitating and typically fatal X-linked progressive neuromuscular disorder that results in progressive muscle degeneration aggravated by sterile inflammation. The P2RX7 purinoceptor is an extracellular ATP-gated ion channel expressed in immune cells, and has been targeted in treatment of infectious and inflammatory diseases. In particular, P2xr7 receptor abnormalities have been demonstrated in mdx dystrophic mice, a model for DMD lacking expression of the full length dystrophin transcript through a single point mutation in exon 23. Here, we looked at the differential effects in gene expression regulation in whole muscle in dystrophic mdx mice with or without ablation of the P2rx7 purinoceptor.

2019-09-26 | E-MTAB-7698 | biostudies-arrayexpress

Expression data of ex vivo purified CD4+ cells from WT and P2rx7-/- mice

Project description:Extracellular adenosine triphosphate (eATP) is a signaling molecule that affects T cell function via the ionotropic P2X7 receptor. The study of effector/memory T cells isolated from mice with deletion of P2rx7, the gene encoding for P2X7, allowed understanding the impact of P2X7 activity on T cell function in the eATP-rich tumor microenvironment. To explore the the transcriptional impact of the lack of P2rx7 in CD4+ naïve and TEM cells, we performed genome-wide expression profiling of ex vivo purified CD4+ naïve and TEM cells from WT and P2rx7-/- mice

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RNA-seq comparison of immortalised myoblasts from dystrophic and WT mice

Project description:Pathophysiology of Duchenne Muscular Dystrophy (DMD) is still elusive. Although progressive damage to muscle fibres is a cause of muscle deterioration leading to premature death, there is a growing body of evidence indicating that the triggering effects of DMD mutation are present at the very early stage of muscle development. To study this, we have performed an RNA-seq experiment to compare the transcriptional profile of early stage myoblasts from dystrophic mice compared to WT mice. We have used a myoblast cell line carrying the mdx mutant allele (SC5), which results in a premature stop codon in the Dystrophin gene, leading to a dystrophic phenotype. The WT cell line is the IMO myoblast cell line.

2019-10-02 | E-MTAB-7287 | biostudies-arrayexpress

Gene profile of dystrophic cardiac progenitor cells

Project description:Cardiac resident stem/progenitor cells are intensively studied as a potential therapeutic tool for cardiomyopathies. While surface marker expression and ability to generate cardiomyocytes have been characterized in some detail for several types of these progenitors, little is known on how their cardiac differentiation is regulated. Beta sarcoglycan null (bSG KO) mice are a model for limb girdle muscular dystrophy type 2E (LGMD2E), and are characterized by muscular dystrophy and progressive dilated cardiomyopathy. In the present study we isolated and characterized cardiac progenitors (mesoangioblasts) from the small vessels of neonatal hearts bSG KO mice and unexpectedly observed that they differentiate spontaneously into skeletal muscle fibers both in vitro and when transplanted in regenerating muscles and infarcted hearts. The micro array data showed that dystrophic cardiac progenitor and myogenic cells (C2C12) share similar gene expression profile. Keywords: Beta sarcoglycan null mice, muscular dystrophy, cardiac mesoangioblasts, myogenic differentiation Biological triplicates of cardiac wild-type and dystrophic mesoangioblasts isolated from different heart region (atrium, ventricle, aorta) were compared. C2C12 cells were used as positive control for myogenic differentiation.

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Transcriptomic analyses of ChREBPtotal-null mice and ChREBPβ-null mice

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Project description:Ten-eleven translocation (Tet) family-mediated DNA oxidation represents a novel epigenetic modification capable of converting 5-methylcytosine (5-mC) to 5-hydroxymethylcytosine (5-hmC) to regulate various biological processes. However, it is unknown whether the Tet family affects mesenchymal stem cells (MSCs) or the skeletal system. Here we show that depletion of Tet1 and Tet2 resulted in impaired self-renewal and differentiation of bone marrow MSCs (BMMSCs) and a significant osteopenia phenotype. Mechanistically, Tet1 and Tet2 deficiency reduced demethylation of the P2rX7 promoter and thus downregulated exosome release, leading to intracellular accumulation of miR-297a-5p, miR-297b-5p, and miR-297c-5p. These miRNAs inhibited Runx2 signaling to impair BMMSC function. We show that overexpression of P2rX7 consistently rescued the impaired BMMSCs and osteoporotic phenotype in Tet1 and Tet2 double knockout mice. These results indicate that Tet1 and Tet2 play a critical role in maintaining BMMSC and bone homeostasis through epigenetic regulation of P2rX7 to control exosome and miRNA release. This newly identified Tet/P2rX7/Runx2 cascade may serve as a target for the development of novel therapies for osteopenia disorders.

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Single Cell RNA-Sequencing of Skeletal Muscle in Dystrophic Mouse Models

Project description:Duchenne muscular dystrophy (DMD) is caused by an out-of-frame mutation in the DMD gene that results in the absence of a functional dystrophin protein, leading to a devastating and progressive lethal muscle-wasting disease. Genetic modifiers have been shown to increase disease severity in DMD mouse models as well as in human patients. Little is known about cellular heterogeneity in skeletal muscle as disease severity increases. To address this, we explored skeletal muscle-resident cell populations in healthy (wt-NSG), dystrophic (mdx-NSG), and severely dystrophic (mdxD2-NSG) mouse models utilizing scRNA-seq. We found an increased frequency of activated fibroblasts, activated fibro-adipogenic progenitor cells, and proinflammatory macrophages in dystrophic and severely dystrophic gastrocnemius muscles. Moreover, in endothelial cells we found an upregulation of extracellular matrix and platelet aggregation genes in dystrophic and severely dystrophic muscles, indicating endothelial cell functional impairment. In summary, this work extends the understanding of the severe nature of DMD, which should be considered when developing regenerative therapeutic avenues for DMD.

2022-09-27 | GSE213925 | GEO

effects of microbiome dysbiosis on murine dystrophic muscle

Project description:Duchenne muscular dystrophy (DMD) is a progressive severe muscle-wasting disease caused by mutations in DMD encoding dystrophin that leads to loss of muscle function with cardiac/respiratory failure and premature death. Since dystrophic muscles are sensed by infiltrating inflammatory cells and gut microbial communities can cause immune dysregulation and metabolic syndrome, we sought to investigate whether intestinal bacteria may support the muscle immune response in mdx dystrophic animal model. We assess this question here through unbiased profiling of muscle transcriptome through RNAseq. We found that the absence of gut microbes through the generation of a mdx GF animal model as well as modulation of the microbial community structure by antibiotic treatment revealed the ability of the dystrophic-associated intestinal microbiota to modulate immunity and secondary muscle pathogenetic mechanisms of DMD, including inflammation, fibrosis, and atrophy.

2022-11-22 | GSE218370 | GEO

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