This SuperSeries is composed of the SubSeries listed below.
TET2 repression by androgen hormone regulates global hydroxymethylation status and prostate cancer progression.
Specimen part, Cell line, Treatment
View SamplesProstate cancer is the most common cancer in men. We identified that miR-29 family is the most androgen-responsive miRNA in hormone-refractory prostate cancer cells. For the screening of miR-29b target, we performed microarray analysis in two prostate cancer cells. Because TET2 is the primary target of miR-29 family by our analysis, we also performed TET2 signaling by microarray.
TET2 repression by androgen hormone regulates global hydroxymethylation status and prostate cancer progression.
Specimen part, Cell line
View SamplesSaccharomyces cerevisiae is exposed to freeze-thaw stress in commercial processes including frozen dough baking. The cell viability and fermentation activity after freeze-thaw were dramatically decreased due to freeze-thaw injury. Because freeze-thaw injury involves complex phenomena, the mechanisms of it are not fully understood. We attempted to analyze the mechanisms of freeze-thaw injury by indirect gene expression analysis during post-thaw incubation after freeze-thaw treatment using DNA microarray profiling. The results showed that a high frequency of the genes involved in the homeostasis of metal ions were up-regulated depending on the freezing period. The phenotype of the deletion mutants of the up-regulated genes extracted by indirect gene expression analysis was assessed. The deletion strains of the MAC1 and CTR1 genes involved in copper ion homeostasis exhibited freeze-thaw sensitivity, suggesting that copper ion homeostasis is required for freeze-thaw tolerance. Supplementation with copper ions during post-thaw incubation increased intracellular superoxide dismutase activity. Inverse correlated with intracellular superoxide dismutase activity, intracellular levels of reactive oxygen species were decreased. Moreover, cell viability increased by supplementation with copper ions under specific assessment conditions. This study suggested that insufficiency of copper ion homeostasis may be one of the causes of freeze-thaw injury.
Insufficiency of copper ion homeostasis causes freeze-thaw injury of yeast cells as revealed by indirect gene expression analysis.
No sample metadata fields
View SamplesTo understand the molecular mechanism by which regulate skeletal development, we attempted to identify transcription factors that were highly expressed in developing cartilage during the embryonic stage.
The transcription factor Foxc1 is necessary for Ihh-Gli2-regulated endochondral ossification.
Specimen part
View SamplesThe early blood vessels of the embryo and yolk sac in mammals develop by aggregation of de novo forming angioblasts into a primitive vascular plexus, which then undergoes a complex remodeling process. Angiogenesis is also important for disease progression in the adult. However, the precise molecular mechanism of vascular development remains unclear.
Genome-wide identification of endothelial cell-enriched genes in the mouse embryo.
No sample metadata fields
View SamplesWe performed global scale microarray analysis to identify detailed mechanisms by which nonpermissive temperature induces cell growth arrest and differentiation in astrocyte RCG-12 cells harboring temperature-sensitive simian virus 40 large T-antigen by using an Affymetrix GeneChip system. Astrocyte RCG-12 cells used in this study were derived from primary cultured rat cortical glia cells infecting with a temperature-sensitive simian virus 40 large T-antigen. Although the cells grew continuously at the permissive temperature, the nonpermissive temperature led to cell growth arrest and differentiation. Of the 15,923 probe sets analyzed, nonpermissive temperature differentially expressed 556 probe sets by >2.0-fold.
Identification of genetic networks involved in the cell growth arrest and differentiation of a rat astrocyte cell line RCG-12.
No sample metadata fields
View SamplesWe performed global scale microarray analysis to identify detailed mechanisms by which nonpermissive temperature induces cell growth arrest and differentiation in tracheal epithelial RTEC11 cells harboring temperature-sensitive simian virus 40 large T-antigen by using an Affymetrix GeneChip system. Tracheal epithelial RTEC11 cells used in this study were derived from transgenic rats harboring a temperature-sensitive simian virus 40 large T-antigen. Although the cells grew continuously at the permissive temperature, the nonpermissive temperature led to cell growth arrest and differentiation.
Establishment and functional characterization of a tracheal epithelial cell line RTEC11 from transgenic rats harboring temperature-sensitive simian virus 40 large T-antigen.
No sample metadata fields
View SamplesRECK, a glycosylphosphatidylinositol-anchored glycoprotein, inhibits the enzymatic activities of some matrix metalloproteinases (MMP), thereby suppressing tumor cell metastasis; however, the detailed mechanism is still obscure. In this study, we compared the gene expression profiles between mock- and RECK-transfected HT1080 cells.
RECK negatively regulates matrix metalloproteinase-9 transcription.
Cell line
View SamplesIn examining NO signaling in the fission yeast Schizosaccharomyces pombe, we found that the putative NO dioxygenase SPAC869.02c (named Yhb1) and the S-nitrosoglutathione reductase Fmd2 cooperatively reduced intracellular NO levels as NO-detoxification enzymes. Although both protein levels were increased with exogenous NO, their expression patterns were different during growth phases. While expression of Yhb1 in the log phase was abrogated by treatment with an NO synthase inhibitor, induction of Fmd2 in the stationary phase was correlated with elevated mitochondrial respiratory chain (MRC) activity and reactive oxygen species (ROS) generation. Moreover, NO was localized in the mitochondria specifically in the stationary phase, suggesting that there are at least two distinctive types of NO signaling in S. pombe cells. For mitochondrial NO signaling, pretreatment with an NO donor effectively rescued the cell viability by repressing generation of ROS under oxidative stress. DNA microarray analysis revealed that exogenous NO contributes to tolerance to hydrogen peroxide (H2O2) stress by (i) inhibition of Fe3+ to Fe2+conversion, (ii) upregulation of the H2O2-detoxifying enzymes, and (iii) downregulation of the MRC genes. Therefore, NO is suggested to play a pivotal role in the negative feedback system to regulate ROS levels under oxidative stress in S. pombe cells.
Nitric oxide signaling and its role in oxidative stress response in Schizosaccharomyces pombe.
Treatment
View SamplesThe liver may regulate glucose homeostasis by modulating the sensitivity/resistance of peripheral tissues to insulin, by way of the production of secreted proteins, termed hepatokines.
A liver-derived secretory protein, selenoprotein P, causes insulin resistance.
Sex, Specimen part, Disease
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