Dystrophic single myofibers vs. control single myofibers
Ontology highlight
ABSTRACT:
ORGANISM(S): synthetic construct Mus musculus Rattus norvegicus Homo sapiens
PROVIDER: GSE21498 | GEO | 2015/11/25
SECONDARY ACCESSION(S): PRJNA125993
REPOSITORIES: GEO
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Project description:MicroRNA-expression profile of dystrophic single fibers compared to wild type single fibers isolated from different muscles of mdx and C57BL mice. Myofibers were isolated from different muscle types (tibialis, diaphragm and quadriceps) of gender- (male) and age- (3 month old and half) matched wt and dystrophic mice. 9 total samples per animal model (C57BL, mdx), 3 replicates per muscle type.
2015-11-25 | E-GEOD-21498 | biostudies-arrayexpress
Project description:MicroRNA-expression profile of dystrophic single fibres vs wild type single fibers isolated from different muscle of mdx and c57bl mice. Myofibers were isolated from different muscle type (tibialis, diaphragm and quadriceps of gender- (male) and age- (3 month old and half) matched wt and dystrophic mice). 9 total samples per animal model, 3 replicates per muscle type sample
2012-12-21 | E-GEOD-21219 | biostudies-arrayexpress
Project description:MicroRNA-expression profile of dystrophic single fibres vs wild type single fibers isolated from different muscle of mdx and c57bl mice. Myofibers were isolated from different muscle type (tibialis, diaphragm and quadriceps of gender- (male) and age- (3 month old and half) matched wt and dystrophic mice).
2012-12-21 | GSE21219 | GEO
Project description:Dystrophic single myofibers vs control single myofibers
| PRJNA126531 | ENA
Project description:Dystrophic single myofibers vs. control single myofibers
| PRJNA125993 | ENA
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
Project description:We report here on the identification and functional characterization of Sca1-positive muscle interstitial cells that contribute to regeneration or fibroadipogenic degeneration of dystrophic muscles and mediate the beneficial effects of HDAC inhibitors (HDACi) in mdx mice. We found that the phenotype adopted by these cells and their biological activity are influenced by changes in muscle environment. While Sca1-positive muscle interstitial cells from healthy muscles spontaneously adopt a fibro-adipogenic phenotype, Sca1-positive muscle interstitial cells isolated from dystrophic muscles of young mdx mice show a latent myogenic phenotype that is implemented by the exposure to HDACi. Co-culture assays in vitro and co-transplantation experiments in vivo demonstrate that HDACi also improve Sca1-positive muscle interstitial cell ability to enhance the differentiation potential of adjacent satellite cells. Importantly, HDACi-induced myogenic phenotype and pro-regeneration activity were not observed in Sca1-positive muscle interstitial cells isolated from muscles of old mdx mice. The different phenotype of Sca1-positive muscle interstitial cells from mdx mice at different stages of disease progression correlated with the stage-dependent beneficial effect of HDACi, which were effective only at early stages of disease. Transplantation of Sca1-positive muscle interstitial cells isolated from regenerating young muscles into muscles of old mdx mice restored HDACi ability to increase myofiber size. These results indicate that Sca1-positive muscle interstitial cells are key cellular determinants of disease progression and mediate the beneficial effect of HDACi in a mouse model of muscular dystrophy. Isolation of Sca1+ muscle interstitial cells from TSA treated DMD/MDX mice and MuSc from DMD/MDX mice
2012-03-31 | E-GEOD-34843 | biostudies-arrayexpress
Project description:We report here on the identification and functional characterization of Sca1-positive muscle interstitial cells that contribute to regeneration or fibroadipogenic degeneration of dystrophic muscles and mediate the beneficial effects of HDAC inhibitors (HDACi) in mdx mice. We found that the phenotype adopted by these cells and their biological activity are influenced by changes in muscle environment. While Sca1-positive muscle interstitial cells from healthy muscles spontaneously adopt a fibro-adipogenic phenotype, Sca1-positive muscle interstitial cells isolated from dystrophic muscles of young mdx mice show a latent myogenic phenotype that is implemented by the exposure to HDACi. Co-culture assays in vitro and co-transplantation experiments in vivo demonstrate that HDACi also improve Sca1-positive muscle interstitial cell ability to enhance the differentiation potential of adjacent satellite cells. Importantly, HDACi-induced myogenic phenotype and pro-regeneration activity were not observed in Sca1-positive muscle interstitial cells isolated from muscles of old mdx mice. The different phenotype of Sca1-positive muscle interstitial cells from mdx mice at different stages of disease progression correlated with the stage-dependent beneficial effect of HDACi, which were effective only at early stages of disease. Transplantation of Sca1-positive muscle interstitial cells isolated from regenerating young muscles into muscles of old mdx mice restored HDACi ability to increase myofiber size. These results indicate that Sca1-positive muscle interstitial cells are key cellular determinants of disease progression and mediate the beneficial effect of HDACi in a mouse model of muscular dystrophy.
2012-04-01 | GSE34843 | GEO
Project description:Fibro adipogenic progenitors (FAPs) promote satellite cell differentiation in adult skeletal muscle regeneration. However, in pathological conditions, FAPs are responsible for fibrosis and fatty infiltrations. Here we show that the NOTCH pathway negatively modulates FAP differentiation both in vitro and in vivo. However, FAPs isolated from young dystrophin- deficient mdx mice are insensitive to this control mechanism. An unbiased mass spectrometry-based proteomic analysis of FAPs from muscles of wild type and mdx mice, suggest that the synergistic cooperation between NOTCH and inflammatory signals controls FAP differentiation. Remarkably, we demonstrated that factors released by hematopoietic cells restore the sensitivity to NOTCH adipogenic inhibition in mdx FAPs. These results offer a basis for rationalizing pathological ectopic fat infiltrations in skeletal muscle and may suggest new therapeutic strategies to mitigate the detrimental effects of fat depositions in muscles of dystrophic patients.
2019-06-24 | PXD014195 | Pride
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