RNA-deep sequencing (RNA-Seq) analysis of dy2J/dy2J (Lama2-CMD mouse model), mdx (DMD mouse model) and Wild-type skeletal muscles
Ontology highlight
ABSTRACT:
PROVIDER: PRJNA521797 | ENA |
REPOSITORIES: ENA
Dataset's files
| Action | DRS | |||
|---|---|---|---|---|
| SRR8559100.fastq.gz | Fastqsanger.gz | |||
| SRR8559093.fastq.gz | Fastqsanger.gz | |||
| SRR8559094.fastq.gz | Fastqsanger.gz | |||
| SRR8559095.fastq.gz | Fastqsanger.gz | |||
| SRR8559096.fastq.gz | Fastqsanger.gz |
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Project description:Analysis of skeletal muscles with specific knockout (KO) of Phosphatase and tensin homolog (Pten) gene in an animal model of DMD (mdx mice). Pten knockout alleviates myofiber degeneration and restores muscle function in mdx mice.
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Project description:We constructed the trans/mdx mice as a novel DMD disease model by crossing transgenic mice and mdx mice. The transgenic and trans/mdx mice have UAA incorporation system that can readthrough the nonsense mutation in the dmd gene with additional UAA. The whole transcriptomics of heart and muscle tissues of 5 mouse groups (n=2) were used to determine whether the introduced UAA incorporation system affect the normal gene expression of mice, or the safety of the system. Groups include: a) wild-type C57BL/6N mice; b) transgenic mice; c) mdx mice; d) trans/mdx mice without UAA; e) trans/mdx mice with UAA (50 mg NAEK every 2-3 day, treated for 4 weeks). The total numbers of expressed genes were around 11,000 in all 5 mouse groups. The expression levels of major genes (logFPKM>0) in 5 mouse groups were also close to each other. These data indicated that the UAA incorporation system was safe and could serve as a potential therapeutic strategy for DMD disease. The transgenic mice with UAA incorporation system we constructed could also cross with other nonsense mutation mice to build more functional animal models.
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Project description:Duchenne muscular dystrophy (DMD) is an X-linked recessive disease caused by deleterious mutations in the DMD gene, rendering non-functional forms or complete absence of the protein dystrophin. Eccentric contraction-induced force loss is the most robust and reproducible phenotype of dystrophin-deficient skeletal muscle, yet the molecular mechanisms underlying force loss remain obscure. To this end, we utilized the mdx mouse model of DMD, which displays extreme sensitivity to eccentric contractions. An existing mouse line from our lab that overexpresses cytoplasmic gamma-actin specifically in skeletal muscle (mdx/Actg1-TG) was shown to significantly protect mdx muscle against contraction-induced force loss. To understand the mechanism behind this protection, we performed iTRAQ proteomics on mdx/Actg1-TG tibialis anterior (TA) muscle versus non-transgenic littermate controls to identify differentially-expressed proteins that may afford protection upon gamma-actin overexpression.
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Project description:Duchenne Muscular Dystrophy (DMD) is a fatal muscle wasting disorder caused by dystrophin deficiency. Previous work suggested that increased expression of the dystrophin-related protein utrophin in the mdx mouse model of DMD can prevent dystrophic pathophysiology. Physiological tests showed that the transgenic mouse muscle functioned in a way similar to normal muscle. More recently, it has become possible to analyse disease pathways using microarrays, a sensitive method to evaluate the efficacy of a therapeutic approach. We thus examined the gene expression profile of mdx mouse muscle compared to normal mouse muscle and compared the data with that obtained from the transgenic line expressing utrophin. The data confirm that the expression of utrophin in the mdx mouse muscle results in a gene expression profile virtually identical to that seen for the normal mouse. This study confirms that a strategy to up-regulate utrophin is likely to be effective in preventing the disease. Experiment Overall Design: Here we have addressed important question of changes in the global gene expression profile of mdx mouse muscle compared to normal mouse muscle and compared the data with that obtained from the transgenic line (fiona) expressing high level of utrophin on mdx background.
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Project description:Duchenne Muscular Dystrophy (DMD) is a fatal muscle wasting disorder caused by dystrophin deficiency. Previous work suggested that increased expression of the dystrophin-related protein utrophin in the mdx mouse model of DMD can prevent dystrophic pathophysiology. Physiological tests showed that the transgenic mouse muscle functioned in a way similar to normal muscle. More recently, it has become possible to analyse disease pathways using microarrays, a sensitive method to evaluate the efficacy of a therapeutic approach. We thus examined the gene expression profile of mdx mouse muscle compared to normal mouse muscle and compared the data with that obtained from the transgenic line expressing utrophin. The data confirm that the expression of utrophin in the mdx mouse muscle results in a gene expression profile virtually identical to that seen for the normal mouse. This study confirms that a strategy to up-regulate utrophin is likely to be effective in preventing the disease. Keywords: Global gene expression profile
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Project description:Duchenne muscular dystrophy (DMD) is a devastating disease characterized by progressive muscle wasting and limitation of life. In addition to the inherent weakness of dystrophin-deficient muscle, the dysfunction of resident muscle stem cells significantly contributes to disease progression. Using the mdx mouse model of DMD, we performed an in-depth characterization of disease progression and muscle stem cell (MuSC) function in dystrophin deficient skeletal muscle using immunohistology, isometric force measurements, transplantation assays, and transcriptomic analysis. Here, we performed single cell RNA-sequencing of wild-type (WT) and mdx myogenic cells before and 5-days following cardiotoxin injury.
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