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GSE44051
Homo sapiens
24 Downloadable Samples
Affymetrix Human Gene 1.0 ST Array (hugene10st)
Description
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. We observed 183 differentially regulated transcripts with fold-changes > 1.3. The transcriptional response resembles several properties of the in vivo situation in the skeletal muscle after endurance exercise, namely significant enrichment of pathways associated with interleukin and chemokine signaling, lipid metabolism, and anti-oxidant defense; notably without increased release of creatin kinase.
Publication Title
Cytokine response of primary human myotubes in an in vitro exercise model.
Sample Metadata Fields
Sex, Specimen part, Subject
View Samples- Bos taurus
- 12 Downloadable Samples
- Affymetrix Bovine Genome Array (bovine)
Description
In summary the main goal of this study is to determine the transcriptional profile of bovine endoemtrium at early stage of development in relation to pregnancy success after transfer of in vitro derived blastocysts
Publication Title
Gene expression and DNA-methylation of bovine pretransfer endometrium depending on its receptivity after in vitro-produced embryo transfer.
Sample Metadata Fields
Sex
View Samples- Bos taurus
- 12 Downloadable Samples
- Affymetrix Bovine Genome Array (bovine)
Description
In summary the main goal of this study is to determine the transcriptional profile of bovine endoemtrium at early stage of development in relation to pregnancy success after transfer of in vivo derived blastocysts
Publication Title
Gene expression and DNA-methylation of bovine pretransfer endometrium depending on its receptivity after in vitro-produced embryo transfer.
Sample Metadata Fields
Sex
View Samples- Drosophila melanogaster
- 8 Downloadable Samples
Illumina Genome Analyzer IIx, Illumina HiSeq 2000
Description
mRNA sequencing was used to identify genome wide transcriptional changes occuring in fly heads in response to spermidine feeding. This study shed light on the molecular mechanisms through wich spermidine can protect against age-dependent memory impairment. Overall design: mRNA profiles from 3 and 10 day old Drosophila melanogaster heads were generated in duplicate by deep sequencing using Illumina GAIIx. mRNA profiles from flies that were fed food with 5mM spermidine were compared to profiles from flies that had no spermidine in thier food.
Publication Title
Restoring polyamines protects from age-induced memory impairment in an autophagy-dependent manner.
Sample Metadata Fields
Age, Specimen part, Subject
View Samples- Escherichia coli k-12
- 9 Downloadable Samples
- Affymetrix E. coli Genome 2.0 Array (ecoli2)
Description
Bacteria generally possess multiple factors that, based on structural and functional similarity, divide into two families: D and N. Among the seven factors in Escherichia coli, six belongs to the D family. Each factor recognizes a group of promoters, providing effective control of differential gene expression. Many studies have shown that factors of the D family compete with each other for function. In contrast, the competition between N and D families has yet to be fully explored. Here we report a global antagonistic effect on gene expression between two alternative factors, N (RpoN) and S (RpoS), a D family protein. Mutations in rpoS and rpoN inversely affected a number of cellular traits, such as expression of flagellar genes, N-controlled growth on poor nitrogen sources, and S-directed expression of acid phosphatase AppA. Transcriptome analysis reveals that 40% of genes in the RpoN regulon were under reciprocal RpoS control. Furthermore, loss of RpoN led to increased levels of RpoS, while RpoN levels were unaffected by rpoS mutations. Expression of the flagellar F factor (FliA), another D family protein, was controlled positively by RpoN but negatively by RpoS. These findings unveil a complex regulatory interaction among N, S and F, and underscore the need to employ systems biology approaches to assess the effect of such interaction of factors on cellular functions, including motility, nutrient utilization, and stress response.
Publication Title
Antagonistic regulation of motility and transcriptome expression by RpoN and RpoS in Escherichia coli.
Sample Metadata Fields
No sample metadata fields
View Samples- Sus scrofa
- 12 Downloadable Samples
- Affymetrix Porcine Genome Array (porcine)
Description
To identify biological processes as well as molecular markers for drip loss, the transcriptomes of logissimus dorsi from 6 sib pair of F2 animals
Publication Title
Expression profiling of muscle reveals transcripts differentially expressed in muscle that affect water-holding capacity of pork.
Sample Metadata Fields
No sample metadata fields
View Samples- Homo sapiens
- 42 Downloadable Samples
- Affymetrix Human Gene 1.0 ST Array (hugene10st)
Description
We performed gene expression microarray analysis of skeletal muscle biopsies from normal glucose tolerant subjects and type 2 diabetes subjects obtained during a 60 min bicycle ergometer exercise and the 180 min of recovery phase
Publication Title
Type 2 diabetes alters metabolic and transcriptional signatures of glucose and amino acid metabolism during exercise and recovery.
Sample Metadata Fields
Age
View Samples- Sus scrofa
- 72 Downloadable Samples
- Affymetrix Porcine Genome Array (porcine)
Description
In this study, we used correlation analysis of the expression profiles and drip loss to produce a list of functional candidate genes under the assumption that genes with strong correlation between their expression values and drip belong to pathways or networks relevant for the control of the trait.
Publication Title
Trait correlated expression combined with expression QTL analysis reveals biological pathways and candidate genes affecting water holding capacity of muscle.
Sample Metadata Fields
No sample metadata fields
View Samples- Mus musculus
- 8 Downloadable Samples
- Affymetrix Mouse Genome 430 2.0 Array (mouse4302)
Description
Maintenance and maturation of primordial germ cells is controlled by complex genetic and epigenetic cascades, and disturbances in this network lead to either infertility or malignant aberration. Transcription factor Tcfap2c / TFAP2C has been described to be essential for primordial germ cell maintenance and to be upregulated in several human germ cell cancers. Using global gene expression profiling, we identified genes deregulated upon loss of Tcfap2c in primordial germ cell-like cells. We show that loss of Tcfap2c affects many aspects of the genetic network regulating germ cell biology, such as downregulation maturation markers and induction of markers indicative of somatic differentiation, cell cycle, epigenetic remodeling, and pluripotency associated genes. Chromatin-immunoprecipitation analyses demonstrated binding of Tcfap2c to regulatory regions of deregulated genes (Sfrp1, Dmrt1, Nanos3, c-Kit, Cdk6, Cdkn1a, Fgf4, Klf4, Dnmt3b and Dnmt3l) suggesting that these genes are direct transcriptional targets of Tcfap2c in primordial germ cells. Since Tcfap2c deficient primordial germ cell like cells display cancer related deregulations in epigenetic remodeling, cell cycle and pluripotency control, the Tcfap2c-knockout allele was bred onto 129S2/Sv genetic background. There, mice heterozygous for Tcfap2c develop germ cell cancer with high incidence. Precursor lesions can be observed as early as E16.5 in developing testes displaying persisting expression of pluripotency markers. We further demonstrate, that mice with a heterozygous deletion of the Tcfap2c target gene Nanos3 are also prone to develop teratoma. These data highlight Tcfap2c as a critical and dose-sensitive regulator of germ cell fate.
Publication Title
Transcription factor TFAP2C regulates major programs required for murine fetal germ cell maintenance and haploinsufficiency predisposes to teratomas in male mice.
Sample Metadata Fields
Specimen part
View Samples- Lepidium sativum
- 107 Downloadable Samples
- Affymetrix Arabidopsis ATH1 Genome Array (ath1121501)
Description
This series analyses germinating Lepidium sativum seeds with both temporal and spatial detail. This is a cross species microarray normalisation on Arabidopsis thaliana chips. Performed as part of the vSEED project
Publication Title
Promotion of testa rupture during garden cress germination involves seed compartment-specific expression and activity of pectin methylesterases.
Sample Metadata Fields
Specimen part
View Samples