Ontology highlight
ABSTRACT:
PROVIDER: PRJNA523512 | ENA |
REPOSITORIES: ENA
Dataset's files
| Action | DRS | |||
|---|---|---|---|---|
| SRR8601590.fastq.gz | Fastqsanger.gz | |||
| SRR8601590_1.fastq.gz | Fastqsanger.gz | |||
| SRR8601590_2.fastq.gz | Fastqsanger.gz | |||
| SRR8601591_1.fastq.gz | Fastqsanger.gz | |||
| SRR8601591_2.fastq.gz | Fastqsanger.gz |
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Project description:The satellite cell of skeletal muscle provides a paradigm for quiescent and activated tissue stem cell states. We have carried out transcriptome analyses by comparing satellite cells from adult skeletal muscles, where they are mainly quiescent, with cells from growing muscles, regenerating (mdx) muscles, or with cells in culture, where they are activated. Our study gives new insights into the satellite cell biology during activation and in respect with its niche. We used microarrays to study the global programme of gene expression underlying adult satellite cell quiescence compared to activation states and to identify distinct classes of up-regulated genes in these two different states Skeletal muscle satellite cells were isolated by flow cytrometry using the GFP fluorescence marker from Pax3GFP/+ mice skeletal muscle. The transcriptome of quiescent satellite cells from adult Pax3GFP/+ muscle was compared to the transcriptome of activated satellite cells obtained from three different samples: 1) regenerating Pax3GFP/+:mdx/mdx muscle (Ad.mdx) , 2) growing 1 week old Pax3GFP/+ muscle (1wk), and 3) adult Pax3GFP/+ cells after 3 days in culture (Ad.cult).
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Project description:Muscle stem cells, also known as satellite cells, represent the main myogenic population accounting for skeletal muscle homeostasis and regeneration. Here, using the Assay for Transposase Accessible Chromatin followed by sequencing (ATAC-seq), we investigated the epigenetic landscape of activated human and murine satellite cells. Our analysis identified a compendium of putative regulatory elements defining activated satellite cells and myoblasts, respectively.
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Project description:The PDZ-LIM superfamily member is present in the nucleus of many cells and consists of one PDZ domain at the N-terminus and one or more LIM domains at the C-terminus. The family includes 10 genes, of which PDLIM3, PDLIM5 and LMO7 genes have been shown to promote mouse myoblast differentiation and participate in the regulation of skeletal muscle growth and development. To explore whether chicken PDLIM3, PDLIM5 and LMO7 genes have the same function, this study explored the expression of these genes in the before and after birth of chicken, and after the chicken skeletal muscle satellite cells cultured in vitro interfered with the expression of these genes. The proliferation and differentiation of satellite cells were finally analyzed by transcriptome sequencing. The molecular pathways involved in the regulation of cell proliferation and differentiation were analyzed. The main results are as follows: Transcriptome sequencing revealed that the differentially expressed genes of chicken skeletal muscle satellite cells interfering with PDLIM3 gene expression were mainly enriched in cGMP-PKG, Oxytocin, MAPK, Tight junction and other signaling pathways, and involved in cytoskeletal protein binding, actin binding, muscle tissue regeneration and development, adhesion and other functions. Transcriptome sequencing revealed that compared with the control group, the differentially expressed genes of chicken skeletal muscle satellite cells that interfered with PDLIM5 gene expression were mainly enriched in signaling pathways such as Tight junction, Oxytocin, p53, MAPK, and involved in myocyte production and muscle contraction. Muscle cell differentiation, and participate in cytoskeletal protein binding, actin cytoskeleton formation, actin and actin binding.
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