GEO DataSets

(Submitter supplied) Pofut1 is an essential gene that glycosylates proteins containing EGF-like repeats, including Notch Receptors (NotchRs).  Work in mice and in Drosophila has shown that O-fucosylation by Pofut1 is required for NotchR ligands to bind to and activate NotchRs.  As such, Pofut1 deletion in skeletal myofibers allows for an analysis of potential functions and molecular changes of Pofut1 in skeletal muscle that derive from its expression in skeletal myofibers. more...

Organism:

Mus musculus

Type:

Expression profiling by array

Platform:

GPL1261

6 Samples

Download data: CEL

(Submitter supplied) This SuperSeries is composed of the SubSeries listed below.

Organism:

Mus musculus

Type:

Expression profiling by high throughput sequencing

Platforms:

GPL19057 GPL17021 GPL13112

167 Samples

Download data

(Submitter supplied) Purpose: Sustained muscle fiber-specific mTORC1 activity, through deletion of the mTORC1 upstream inhibitor Tsc1, drives progressive muscle wasting and weakness reminiscent of sarcopenia. We aimed to characterise gene expression changes coinciding with the development of sarcopenia-like features in TSCmKO mice. Methods: Extensorum digitorum longus (EDL) muscles from 3- (weak phenotype) and 9-month-old (severe phenotype) TSCmKO and littermate control mice (Tsc1 floxed, HSA-Cre negative) treated with either vehicle or rapamycin (8 mg.kg.min-1) for 3 days were processed and sequenced. more...

Organism:

Mus musculus

Type:

Expression profiling by high throughput sequencing

Platform:

GPL13112

40 Samples

Download data: TXT

(Submitter supplied) Purpose: To investigate whether our signatures of mTORC1-driven sarcopenia originate from cells residing at the neuromuscular junction (NMJ), we followed laser-capture microdissection with RNA-seq from adult and sarcopenic tibialis anterior (TA) muscles. Methods: TA muscles were incubated in solution containing fluorescently-labeled bungarotoxin, which binds to post-synaptic AChRs and thereby marks NMJ regions. more...

Organism:

Mus musculus

Type:

Expression profiling by high throughput sequencing

Platform:

GPL19057

32 Samples

Download data: TXT

(Submitter supplied) Purpose: Despite demonstrating that the overall effect of long-term rapamycin-treatment is overwhelmingly positive in aging skeletal muscle, we observed muscle-specificity in the responsiveness to rapamycin, leading us to hypothesize that the primary drivers of age-related muscle loss and therefore effective intervention strategies may differ between muscles. To address this question and dissect the key signaling nodes associated with mTORC1-driven muscle aging, we created a comprehensive multi-muscle gene expression atlas in adult, sarcopenic and rapamycin-treated mice using RNA-seq. more...

Organism:

Mus musculus

Type:

Expression profiling by high throughput sequencing

Platform:

GPL17021

71 Samples

Download data: TXT

(Submitter supplied) Skeletal muscle growth and regeneration rely on myogenic progenitor and satellite cells, the stem cells of postnatal muscle. Elimination of Notch signals during mouse development results in premature differentiation of myogenic progenitors and formation of very small muscle groups. Here we show that this drastic effect is rescued by mutation of the muscle differentiation factor MyoD. However, rescued myogenic progenitors do not assume a satellite cell position and contribute poorly to myofiber growth. more...

Organism:

Mus musculus

Type:

Expression profiling by array

Platform:

GPL6885

47 Samples

Download data: TXT

(Submitter supplied) We show that Prox1 overexpression induces slow muscle fiber type gene program in fast muscle and activates calcineurin signaling

Organism:

Mus musculus

Type:

Expression profiling by array

Platform:

GPL6887

6 Samples

Download data: TXT

(Submitter supplied) It has been known for some time that muscle repair potential becomes increasingly compromised with advancing age, and that this age-related defect is associated with reduced activity of muscle satellite cells and with the presence of chronic, low grade inflammation in the muscle. Working from the hypothesis that a heightened inflammatory tone in aged muscle could contribute to poor regenerative capacity, we developed genetic systems to inducibly alter inflammatory gene expression in satellite cells or muscle fibers by modulation of the activity of nuclear factor κB (NF-κB), a master transcriptional regulator of inflammation whose activity is upregulated in many cell types and tissues with age. more...

Organism:

Mus musculus

Type:

Expression profiling by array

Platform:

GPL16570

7 Samples

Download data: CEL, CHP

(Submitter supplied) Satellite cells are the primary source of stem cells for skeletal muscle growth and regeneration. Since adult stem cell maintenance involves a fine balance between intrinsic and extrinsic mechanisms, we performed genome-wide chronological expression profiling to identify the transcriptomic changes involved during early postnatal growth till acquisition of satellite cell quiescence.

Organism:

Mus musculus

Type:

Expression profiling by array

Dataset:

GDS5660

Platform:

GPL1261

11 Samples

Download data: CEL

Analysis of myogenic stem cells called satellite cells (mSCs) FACS-sorted from the trunk of Pax3GFP/+ mice at postnatal days 1, 12, and 28, a period when most mSCs are in proliferation and quiescence states. Results provide insight into molecular basis of early postnatal skeletal muscle development.

Organism:

Mus musculus

Type:

Expression profiling by array, transformed count, 3 age, 2 tissue sets

Platform:

GPL1261

Series:

GSE65927

11 Samples

Download data: CEL

(Submitter supplied) Skeletal muscle aging results in a gradual loss of skeletal muscle mass, skeletal muscle function and decreased regenerative capacity, which can lead to sarcopenia and increased mortality. While the mechanisms underlying sarcopenia remain unclear, the skeletal muscle stem cell, or satellite cell, is required for muscle regeneration. Therefore, identification of signaling pathways affecting satellite cell function during aging may provide insights into therapeutic targets for combating sarcopenia. more...

Organism:

Mus musculus

Type:

Expression profiling by array

Platform:

GPL1261

4 Samples

Download data: CEL

(Submitter supplied) Our laboratory wanted to define the transcription profile of aged skeletal muscle. For this reason, we performed a triplicate microarray study on young (3 weeks) and aged (24 months) gatrocnemius muscle from wild-type C57B16 Mice Keywords: other

Organism:

Mus musculus

Type:

Expression profiling by array

Platform:

GPL1261

6 Samples

Download data: CEL, CHP, EXP

(Submitter supplied) During aging and neuromuscular diseases, there is a progressive loss of skeletal muscle volume and function, which is often associated with denervation and a loss of muscle stem cells (MuSCs). A relationship between MuSCs and innervation has not been established however. Herein, we administered neuromuscular trauma to a MuSC lineage tracing model and observed a subset of MuSCs specifically engraft in a position proximal to the neuromuscular junction (NMJ). more...

Organism:

Mus musculus

Type:

Expression profiling by high throughput sequencing

Platform:

GPL24247

9 Samples

Download data: RDS

(Submitter supplied) Molecular mechanisms underlying sarcopenia, the age-related loss of skeletal muscle mass and function, remain unclear. To identify molecular changes that correlated best with sarcopenia and might contribute to its pathogenesis, we determined global gene expression profiles in muscles of rats aged 6, 12, 18, 21, 24, and 27 months. These rats exhibit sarcopenia beginning at 21 months. Correlation of the gene expression versus muscle mass or age changes, and functional annotation analysis identified gene signatures of sarcopenia distinct from gene signatures of aging. more...

Organism:

Rattus norvegicus

Type:

Expression profiling by array

Platform:

GPL1355

54 Samples

Download data: CEL

(Submitter supplied) DPN muscle exhibits features of degeneration with attempted regeneration. In the most severely pathological muscle samples, regeneration appears to be stymied and our data suggest that this may be partly due to intrinsic dysfunction of the satellite cell pool in addition to extrinsic structural pathology (e.g. nerve damage).

Organism:

Homo sapiens

Type:

Expression profiling by high throughput sequencing

Platform:

GPL21290

15 Samples

Download data: TXT

(Submitter supplied) We performed transcriptional profiling to test the hypothesis that type I grouping severity in Parksino's disease link to distinct gene expression networks

Organism:

Homo sapiens

Type:

Expression profiling by high throughput sequencing

Platform:

GPL24676

36 Samples

Download data: TXT

(Submitter supplied) Satellite cells are responsible for the long-term regenerative capacity of adult skeletal muscle. The diminished muscle performance and regenerative capacity of aged muscle is thought to reflect progressive fibrosis and atrophy. Whether this reduction in muscle competency also involves a diminishment in the intrinsic regulation of satellite cell self-renewal remains unknown. We used microarray to identify gene expression changes underlying the marked reduction in the capacity of satellite cells to self-renew, contribute to regeneration and repopulate the niche as they age.

Organism:

Mus musculus

Type:

Expression profiling by array

Platform:

GPL6246

12 Samples

Download data: CEL

(Submitter supplied) Sarcopenia is a degenerative condition that consists in the age-induced atrophy and functional decline of skeletal muscle cells (myofibers). A common hypothesis is that inducing myofiber hypertrophy should also reinstate myofiber contractile function but such model has not been extensively tested. Here, we find that the levels of the ubiquitin ligase UBR4 increase in skeletal muscle with aging, and that muscle-specific UBR4 loss rescues age-associated myofiber atrophy in mice. more...

Organism:

Mus musculus

Type:

Expression profiling by high throughput sequencing

Platform:

GPL9185

16 Samples

Download data: TXT

(Submitter supplied) Our objective was to identify early changes in gene expression related to the development of sarcopenia via transcriptomic profiling of aging sciatic nerves in vivo. Sciatic nerve mRNA profiles of C57BL/6JN mice aged 5 (n = 6), 18 (n = 5), 21 (n = 6), and 24 months (n = 5) old were generated by RNA sequencing using an Illumina HiSeq4000. The sequence reads that passed quality filters were mapped to the mouse reference genome using STAR and featureCounts. more...

Organism:

Mus musculus

Type:

Expression profiling by high throughput sequencing

Platform:

GPL21103

24 Samples

Download data: CSV, TXT

(Submitter supplied) We developed a method of combining single myofiber isolation with SMART-seq to analyze the whole transcriptome of single myofibers. Here we apply this technique to analyze the variation in the transcriptome of young (4 weeks) and old (19 months) mice. We see the deregulation of a variety of genes that have been reported, or may cause, the deterioration of the muscle in aging. This confirms the applicability of our novel technique for use in analyzing the transcriptome of individual myofibers under various different conditions.

Organism:

Mus musculus

Type:

Expression profiling by high throughput sequencing

Platform:

GPL19057

17 Samples

Download data: CSV, TAB