GEO DataSets

(Submitter supplied) Muscle contraction during exercise is the major stimulus for the release of peptides and proteins (myokines) that are supposed to take part in the benefical adaptation to exercise. We hypothesize that application of an in vitro exercise stimulus as electric pulse stimulation (EPS) to human myotubes enables the investigation of the human muscle secretome in a clearly defined model. We applied EPS for 24 h to primary human myotubes and studied the whole genome-wide transcriptional response and as well as the release of candidate myokines. more...

Organism:

Homo sapiens

Type:

Expression profiling by array

Dataset:

GDS4920

Platform:

GPL6244

24 Samples

Download data: CEL

Analysis of primary myotubes following electric pulse stimulation (EPS) for 24hr. The EPS conditions mimic an acute endurance exercise bout. Results provide insight into the molecular response of skeletal muscle to exercise.

Organism:

Homo sapiens

Type:

Expression profiling by array, transformed count, 12 individual, 2 protocol sets

Platform:

GPL6244

Series:

GSE44051

24 Samples

Download data: CEL

(Submitter supplied) Regular physical exercise evokes profound physiological responses which are strongly associated with many health benefits. However, the details of cellular networks and mechanisms underlying the adaptive responses to exercise remain to be elucidated. We have previously shown the usefulness of electrical pulse stimulation (EPS) to investigate metabolic effects of exercise in cultured human myotubes. The aim of the present study was to uncover networks of signaling pathways and regulatory molecules responsible for the metabolic effects of exercise in human skeletal muscle cells exposed to chronic EPS. Differentiated myotubes were subjected to two different EPS protocols (protocol 1; 2 ms, 10 V, 0.1 Hz for 24 h or protocol 2; 2 ms, 30 V, and 1 Hz for 48 h). Fuel handling was assessed using radiolabeled substrates. The transcriptome, cell proteome, and secreted proteins from EPS-treated and untreated myotubes were analyzed using a combination of high-throughput RNA sequencing, microarray, and high-resolution liquid chromatography mass spectrometry. Independent validation of selected putative myokines were measured using ELISA or multiplex assay. Oxidative metabolism was enhanced in human myotubes exposed to EPS protocol 1. A total of 81 differentially regulated proteins and 952 differentially expressed genes (DEGs) were observed in the cells after EPS protocol 1. Gene ontology (GO) analysis indicated that significantly regulated proteins and genes were enriched in biological processes related to glycolytic pathways, positive regulation of fatty acid oxidation, and oxidative phosphorylation, as well as muscle contraction, autophagy/mitophagy, and oxidative stress. Moreover, proteomic identification of secreted proteins revealed extracellular levels of 137 proteins were changed in myotubes subjected to EPS protocol 1. We also found some degree of overlap between the DEGs found in myotubes submitted to EPS protocol 1 and protocol 2. Among these DEGs was a myokine, leukemia inhibitory factor, which showed to enhance the glucose uptake in skeletal muscle cells, indicating autocrine mechanism to maintain metabolic homeostasis. Collectively, our data provides new insight into the transcriptome, proteome and secreted proteins alterations following in vitro exercise and is a valuable resource for understanding the molecular mechanisms and regulatory molecules mediating the beneficial metabolic effects of exercise.

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL6244

8 Samples

Download data: CEL

(Submitter supplied) In this study, we aimed to investigate transcriptomic profile changes in human skeletal muscle cells that are triggered by a well-established in vitro model of exercise using electrical pulse stimulation (EPS).

Organism:

Homo sapiens

Type:

Expression profiling by high throughput sequencing

Platform:

GPL24676

14 Samples

Download data: TXT

(Submitter supplied) The role of peroxisome proliferator-activated receptor δ (PPARδ) activation on global gene expression and mitochondrial fuel utilization were investigated in human myotubes. Only 21 genes were up-regulated and 3 genes were down-regulated after activation by the PPARδ agonist GW501516. Pathway analysis showed up-regulated mitochondrial fatty acid oxidation, TCA cycle and cholesterol biosynthesis. GW501516 increased oleic acid oxidation and mitochondrial oxidative capacity by 2-fold. more...

Organism:

Homo sapiens

Type:

Expression profiling by array

Dataset:

GDS5378

Platform:

GPL6244

8 Samples

Download data: CEL

Analysis of musculus obliquus internus myotubes treated with PPARδ agonist GW501516 for 96hrs. PPARs regulate lipid utilization and storage. PPARδ is the most abundant PPAR subtype in skeletal muscle. Results provide insight into the molecular effects of PPARδ activation on myotubes.

Organism:

Homo sapiens

Type:

Expression profiling by array, transformed count, 2 agent, 4 individual sets

Platform:

GPL6244

Series:

GSE40789

8 Samples

Download data: CEL

(Submitter supplied) Appropriate amount of exercise is the best way to prevent various diseases and have a healthy life. Skeletal muscles communicate with other organs through myokines, which are secreted by muscle itself during exercise and elicit various effects in the body. However, despite the years of efforts to understand molecular mechanisms of crosstalk between muscle and other organs that mediate the beneficial effects of exercise are not completely understood. more...

Organism:

Mus musculus

Type:

Expression profiling by high throughput sequencing

Platform:

GPL17021

7 Samples

Download data: TXT

(Submitter supplied) Male and female muscle primary cultures were obtained from healthy young individuals. Cultures were treated with either estrogen, testesterone or DMSO. Gene expression was measured as response to the treatment

Organism:

Homo sapiens

Type:

Expression profiling by high throughput sequencing

Platform:

GPL24676

30 Samples

Download data: TSV

(Submitter supplied) The molecular transducers of benefits from different exercise modalities remain incompletely defined. Here we report that 12 weeks of high-intensity aerobic interval (HIIT), resistance (RT), and combined exercise training enhanced insulin sensitivity and lean mass, but only HIIT and combined training improved aerobic capacity and skeletal muscle mitochondrial respiration. HIIT revealed a more robust increase in gene transcripts than other exercise modalities, particularly in older adults, although little overlap with corresponding individual protein abundance was noted. more...

Organism:

Homo sapiens

Type:

Expression profiling by high throughput sequencing

Platform:

GPL11154

103 Samples

Download data: TSV

(Submitter supplied) Skeletal muscle weakness is linked to many adverse health outcomes. Current research to identify new drugs has often been inconclusive due to lack of adequate cellular models. We have previously developed a scalable monolayer system to differentiate human embryonic stem cell (hESC) into mature skeletal muscle cells (SkMCs) within 26 days without cell sorting or genetic manipulation. Here, building on our previous work, we show that differentiation and fusion of myotubes can be further enhanced using the anabolic factors testosterone (T) and follistatin (F) in combination with a cocktail of myokines (C). more...

Organism:

Homo sapiens

Type:

Expression profiling by high throughput sequencing

Platform:

GPL16791

15 Samples

Download data: XLSX

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

Organism:

Mus musculus; Homo sapiens

Type:

Genome binding/occupancy profiling by high throughput sequencing; Expression profiling by high throughput sequencing

Platforms:

GPL21103 GPL20301

26 Samples

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(Submitter supplied) Ammonia is a cytotoxic molecule generated during cellular functions and by the gut microbiome. Dysregulated ammonia metabolism initiates a hyperammonemic stress response (HASR). Hyperammonemia occurs in many chronic diseases but there is limited understanding of the overall consequences of HASR. A comprehensive array of unbiased approaches was used to identify global responses during hyperammonemia with experimental validation of critical findings. more...

Organism:

Mus musculus

Type:

Expression profiling by high throughput sequencing

Platform:

GPL21103

9 Samples

Download data: XLSX

(Submitter supplied) Ammonia is a cytotoxic molecule generated during cellular functions and by the gut microbiome. Dysregulated ammonia metabolism initiates a hyperammonemic stress response (HASR). Hyperammonemia occurs in many chronic diseases but there is limited understanding of the overall consequences of HASR. A comprehensive array of unbiased approaches was used to identify global responses during hyperammonemia with experimental validation of critical findings. more...

Organism:

Homo sapiens

Type:

Expression profiling by high throughput sequencing

Platform:

GPL20301

8 Samples

Download data: TXT

(Submitter supplied) Ammonia is a cytotoxic molecule generated during cellular functions and by the gut microbiome. Dysregulated ammonia metabolism initiates a hyperammonemic stress response (HASR). Hyperammonemia occurs in many chronic diseases but there is limited understanding of the overall consequences of HASR. A comprehensive array of unbiased approaches was used to identify global responses during hyperammonemia with experimental validation of critical findings. more...

Organism:

Mus musculus

Type:

Genome binding/occupancy profiling by high throughput sequencing

Platform:

GPL21103

9 Samples

Download data: XLSX

(Submitter supplied) The pathophysiological effects of a number of metabolic and age-related disorders can be prevented to some extent by exercise and increased physical activity. However, the molecular mechanisms that contribute to the beneficial effects of muscle activity remain poorly explored. Availability of a fast, inexpensive, and genetically tractable model for muscle activity and exercise will allow rapid identification and characterization of the molecular mechanisms that mediate the beneficial effects of muscle activity. more...

Organism:

Drosophila melanogaster

Type:

Expression profiling by high throughput sequencing

Platform:

GPL17275

6 Samples

Download data: XLSX

(Submitter supplied) Mechanistic insights into the molecular events by which exercise enhances the skeletal muscle phenotype are lacking, particularly in the context of type 2 diabetes. Here we unravel a fundamental role for exercise-responsive cytokines (exerkines) on skeletal muscle development and growth in individuals with normal glucose tolerance or type 2 diabetes. Acute exercise triggered an inflammatory response in skeletal muscle, concomitant with an infiltration of immune cells. more...

Organism:

Homo sapiens

Type:

Expression profiling by high throughput sequencing

Platform:

GPL16791

111 Samples

Download data: TXT