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Murine female muscle 4 month old: control vs Calsequestrin1 genetic ablated (calsequestrin1 null)

ABSTRACT: Transcriptional profiling of mouse Extensior Digitorum Longus muscle comparing control Wilde type (WT) C57BL/6J, 4 month old female with Calsequestrin 1-null muscles of the same age and gender without any treatment

ORGANISM(S): Mus musculus

PROVIDER: GSE25984 | GEO | 2012/12/24

SECONDARY ACCESSION(S): PRJNA135411

REPOSITORIES: GEO

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Murine female muscle 4 month old: control vs Calsequestrin1 genetic ablated (calsequestrin1 null)

Project description:Transcriptional profiling of mouse Extensior Digitorum Longus muscle comparing control Wilde type (WT) C57BL/6J, 4 month old female with Calsequestrin 1-null muscles of the same age and gender without any treatment Two-condition experiment, KO vs. WT muscle. Biological replicates: 1 pool with 6 WT controls, 4 KO independently grown. Two replicates per array and dye swap.

2012-12-24 | E-GEOD-25984 | biostudies-arrayexpress

Innervated and 2 month Denervated Rat EDL muscles

Project description:The right legs of 8 Brown-Norway male rats were denervated by a high sciatic nerve section in the hip region of the hind limb.Two months after denervation (6 months of age), extensor digitorum longus (EDL) muscles were removed from the operated legs. The EDL muscles from 8 age-matched non-operated rats served as innervated controls. Total RNA was isolated, labeled cDNA was prepared and hybridized to the Rat Atlas 1.2 Array II membranes (Clontech Laboratories, Palo Alto, CA).

2004-09-10 | E-GEOD-1741 | biostudies-arrayexpress

Innervated and 2 month Denervated Rat EDL muscles

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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

Differential isoform expression and selective muscle involvement in muscular dystrophies

Project description:To test the hypothesis that different muscles may express variable amounts of different isoforms of muscle genes, we applied a custom-designed exon microarray containing probes for 57 muscle-specific genes to assay the transcriptional profiles in sets of human adult, lower limb skeletal muscles. Muscle biopsies from 15 individuals were selected for analysis dissected from 21 anatomically different muscles collected from eight men and seven women, ranging from 61 to 91 years The muscle tissue samples collected included samples from 11 different thigh muscles––vastus medialis, vastus lateralis, vastus intermedialis, sartorius, gracilis, semimembranosus, semitendinosus, biceps femoris, adductor magnus, adductor longus, and rectus femoris––and 10 lower leg muscles––flexor digitorum longus, extensor digitorum longus, tibialis posterior, tibialis anterior, peroneus longus/brevis, extensor hallucis longus, gastrocnemius lateralis, gastrocnemius medialis, flexor hallucis longus, and soleus. Approximately five to seven muscle pieces were collected from each individual muscle sampled. The muscle sample pieces obtained for histological analysis measured roughly 10 mm x 5 mm, and the pieces for RNA isolation 5 mm x 5 mm. The samples were obtained directly from the proximal vital parts of the amputated limbs and processed immediately following their removal to avoid tissue degradation.To test the hypothesis that different muscles may express variable amounts of different isoforms of muscle genes, we applied a custom-designed Agilent exon microarray containing probes for 57 muscle-specific genes to assay the transcriptional profiles in sets of human adult, lower limb skeletal muscles

2015-06-17 | E-GEOD-69938 | 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

Bioenergetics status determines motor neuron vulnerability in spinal muscular atrophy

Project description:Comparative gene expression profiling of motor neurons innervating the extensor digitorum longus (disease-resistant), gastrocnemius (intermediate vulnerability), and tibialis anterior (vulnerable) muscles in mice to determine the factors underlying their selective vulnerability in sinal muscular atrophy.

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Myasthenia gravis model: gene expression profile in diaphragm, extensor digitorum longus and extraocular muscles of rats

Project description:gene expression profile in diaphragm (DIA), extensor digitorum longus (EDL) and extraocular (EOM) muscles of rats with actively induced experimentally acquired MG (EAMG) using Affymetrix rat RAE230 gene chip. Keywords: myasthenia gravis (MG), rats with actively induced experimentally acquired MG (EAMG)

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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

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

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