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Transcriptional responses to chronic oxidative stress in skeletal muscle

ABSTRACT: We measured gene expression differences in the extensor digitorum longus (edl) skeletal muscle between wild-type and mice lacking Cu, Zn-superoxide dismutase to determine the effect of chronic oxidative stress on skeletal muscle. We analyzed 4 edl samples from WT mice and 4 samples from the SOD1 knockouts.

ORGANISM(S): Mus musculus

SUBMITTER: Hui Xie

PROVIDER: E-GEOD-28837 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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Transcriptional responses to chronic oxidative stress in skeletal muscle

Project description:We measured gene expression differences in the extensor digitorum longus (edl) skeletal muscle between wild-type and mice lacking Cu, Zn-superoxide dismutase to determine the effect of chronic oxidative stress on skeletal muscle.

2011-04-26 | GSE28837 | GEO

Comparative Transcriptome Analysis between SOL and EDL Muscle in Yorkshire pigs using Affymetrix microarray

Project description:Skeletal muscle is heterogeneous in nature and distinguished as red muscle and white muscle because of their myofiber composition. Soleus (SOL) is a typical red muscle and extensor digitorum longus (EDL) is a typical white muscle. In this study, we compared the transcriptome difference of soleus and extensor digitorum longus from three 10-week-old Yorkshire boars with porcine Affymetrix microarray.

2014-12-31 | E-MTAB-2419 | biostudies-arrayexpress

miRNA expression in fast and slow skeletal muscle of wild type and SOD1-G93A mice

Project description:Amyotrophic lateral sclerosis (ALS) is a lethal motor neuron disease that progressively debilitates neuronal cells that control voluntary muscle activity. In a mouse model of ALS that expresses mutated human superoxide dismutase 1 (SOD1-G93A) skeletal muscle is one of the tissues affected early by mutant SOD1 toxicity. Fast-twitch and slow-twitch muscles are differentially affected in ALS patients and in the SOD1-G93A model, fast-twitch muscles being more vulnerable. We used miRNA microarrays to investigate miRNA alterations in fast-twitch (EDL) and slow-twitch (soleus) skeletal muscles of symptomatic SOD1-G93A animals and their age-matched wild type littermates. At age of 90 days RNA was extracted from extensor digitorum longus (EDL) and soleus (SOL) muscles of male SOD1-G93A animals and their age-matched wild type male littermates. RNA was hybridized on Affymetrix Multispecies miRNA-2_0 Array.

2014-03-04 | E-GEOD-55507 | biostudies-arrayexpress

Expression data from skeletal muscles of Ts1Cje and disomic C57BL/6 mice

Project description:To determine the gene expression profile of extensor digitorum longus (EDL) and soleus (SO) muscles of wild-type and Ts1Cje mouse model of Down Syndrome (DS). Two types of skeletal muscles (EDL and SO) were harvested from both Ts1Cje and its disomic littermate.

2018-09-06 | GSE96572 | GEO

Subcellular localization analysis of long non-non coding RNAs (lncRNAs) in skeletal muscle myofibers

Project description:In order to study the subcellular localization of lncRNAs in myofibers of skeletal muscle, single myofibers were isolated from Soleus, Extensor Digitorum Longus (EDL) and Tibialis Anterior (TA) of 9 mice. RNA was extracted from nuclei and cytoplasmic fractions of 5-10 isolated myofibers and than separately hybridized on microarrays. Preferential expression in nuclear or cytoplasmic compartment of each lncRNA was determined.

2019-01-07 | GSE112768 | GEO

Gene Expression in Myotonic Dystrophy

Project description:In order to examine the changes in gene expression between normal and myotonic dystrophic animals, gene expression array studies were done with extensor digitorum longus (EDL) of transgenic HSALR line 20b mice using Affymetrix MOE430 2.0 microarrays. We used EDL muscle from transgenic HSALR line 20b mice, maintained as homozygotes in an FVB inbred background and wild-type FVB mice purchased from Taconic. Affymetrix gene expression arrays were performed on HSALR and wild type EDL muscle

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Gene Expression in Myotonic Dystrophy

2012-10-21 | GSE24920 | GEO

Gene expression profile in mouse skeletal muscle after 4F induction

Project description:Analysis of soleus (SOL) and extensor digitorum longus (EDL) muscles isolated from Acta1-Cre+/4Fhet (as treatment) and Acta1-Cre-/4Fhet (as control) mice. Results provide unbiased gene expression profile of SOL and EDL muscles after 4F induction.

2021-03-22 | GSE148911 | GEO

Skeletal muscle myonuclei-specific ChIP-Seq of H3K4me3 and H3K27ac

Project description:Skeletal muscle is a heterogeneous tissue. To study the myo-specific epigenetic landscape in the slow soleus and fast extensor digitorum longus (EDL) muscle, myonuclei were purified with PCM1 -an endogenous mark specific for mature myonuclei. Chromatin immunoprecipitation sequencing (ChIP-Seq) was performed using antibodies against the histone marks H3K4me3 and H3K27ac. Comparison of the differently enriched areas between the two muscles shows that the epigenetic landscape reflects the functional properties of the muscles, each with a distinct regulatory program involving distal regulatory enhancers.

2021-10-22 | GSE182667 | GEO

Effect of insulin insufficiency on ultrastructure and function in skeletal muscle

Project description:Decreased insulin availability and high blood glucose levels, the hallmark features of poorly controlled diabetes, drive disease progression and are associated with decreased skeletal muscle mass. We have shown that mice with -cell dysfunction and normal insulin sensitivity have decreased skeletal muscle mass. This project asks how insulin deficiency impacts on the structure and function of the remaining skeletal muscle in these animals. Methods: Skeletal muscle function was determined by measuring exercise capacity and specific muscle strength prior to and after insulin supplementation for 28 days in 12-week-old mice with conditional -cell deletion of the ATP binding cassette transporters ABCA1 and ABCG1 (β-DKO mice). Abca1 and Abcg1 floxed (fl/fl) mice were used as controls. RNAseq was used to quantify changes in transcripts in soleus and extensor digitorum longus muscles. Skeletal muscle and mitochondrial morphology were assessed by transmission electron microscopy. Myofibrillar Ca2+ sensitivity and maximum isometric single muscle fibre force were assessed using MyoRobot biomechatronics technology. Results: RNA transcripts were significantly altered in β-DKO mice compared to fl/fl controls (32 in extensor digitorum longus and 412 in soleus). Exercise capacity and muscle strength were significantly decreased in β-DKO mice compared to fl/fl controls (p = 0.012), and a loss of structural integrity was also observed in skeletal muscle from the β-DKO mice. Supplementation of β-DKO mice with insulin restored muscle integrity, strength and expression of 13 and 16 of the dysregulated transcripts in and extensor digitorum longus and soleus muscles, respectively. Conclusions: Insulin insufficiency due to -cell dysfunction perturbs the structure and function of skeletal muscle. These adverse effects are rectified by insulin supplementation.

2023-09-26 | E-MTAB-13315 | biostudies-arrayexpress

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