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
Promotion of testa rupture during garden cress germination involves seed compartment-specific expression and activity of pectin methylesterases.
Specimen part
View SamplesBackground: Elevated plasma cholesterol promotes the formation of atherosclerotic lesions in which monocyte-derived lipid-laden macrophages are frequently found. To analyze, if circulating monocytes already show increased lipid content and differences in lipoprotein metabolism, we compared monocytes from patients with Familial Hypercholesterolemia (FH) with those from healthy individuals.
Monocytes of patients with familial hypercholesterolemia show alterations in cholesterol metabolism.
Specimen part, Disease, Disease stage
View SamplesInterferon tau (IFNT), a Type I IFN similar to alpha IFNs (IFNA), is the pregnancy recognition signal, produced by the ruminant conceptus. To elucidate specific effects of bovine IFNT and of other conceptus-derived factors, endometrial gene expression changes during early pregnancy were compared to gene expression changes after intrauterine application of human IFNA2. In study one, endometrial tissue samples were obtained on days (D) 12, 15, and 18 post-mating from nonpregnant or pregnant heifers. In study two, heifers were treated from D14 to D16 of the estrous cycle with an intrauterine device releasing IFNA2 or placebo lipid extrudates or PBS only as controls. Endometrial biopsies were collected after flushing the uterus. All samples from both experiments were analyzed with an Affymetrix Bovine Genome Array. Study one revealed differential gene expression between pregnant and nonpregnant endometria on D15 and D18. In study two, IFNA2 treatment resulted in differential gene expression in the bovine endometrium. Comparison of the datasets from both studies identified genes that were differentially expressed in response to IFNA2 but not in response to pregnancy on D15 or D18. Vice versa, genes were found as differentially expressed during pregnancy but not after IFNA2 treatment. In study three, spatiotemporal alterations in expression of selected genes were determined in uteri from nonpregnant and early pregnant heifers using in situ hybridization. The findings of this study suggest differential effects of bovine IFNT compared to human IFNA2 and that some pregnancy-specific changes in the endometrium are elicited by conceptus-derived factors other than IFNT.
Comparison of the effects of early pregnancy with human interferon, alpha 2 (IFNA2), on gene expression in bovine endometrium.
Sex, Treatment
View SamplesKDM5A/LSD1 is an important epigenetic regulator in medulloblastoma, the most frequent brain tumor of childhood. Here, the response of ONS76 medulloblastoma cells upon siRNA-mediated knockdown of KDM5A is analysed.
The KDM1A histone demethylase is a promising new target for the epigenetic therapy of medulloblastoma.
Specimen part, Cell line, Treatment
View SamplesThis SuperSeries is composed of the SubSeries listed below.
Integrative DNA methylation and gene expression analysis in high-grade soft tissue sarcomas.
Sex, Age
View SamplesWe used the Infinium HumanHT-12 platform to profile gene expression in 79 primary, untreated high-grade soft tissue sarcomas, representing eight relevant subtypes, two non-neoplastic fat samples and 13 representative sarcoma cell lines.
Integrative DNA methylation and gene expression analysis in high-grade soft tissue sarcomas.
Sex
View SamplesGPAM is well characterized in triglyceride synthesis, but has never been implicated in cancer. Our study report a role for GPAM in cell migration. Gene expression changes after GPAM silencing was investigated to gain insight into possible mechanisms underlying GPAM's role in cell migration.
Glycerol-3-phosphate Acyltransferase 1 Promotes Tumor Cell Migration and Poor Survival in Ovarian Carcinoma.
Specimen part, Cell line
View SamplesNeuroblastoma is an embryonal tumor arising from the neural crest. It can be mimicked in mice by neural crest-specific overepxression of oncogenes such as MYCN or mutated ALK.
Targeted expression of mutated ALK induces neuroblastoma in transgenic mice.
Specimen part
View SamplesAdministration of spermidine, a natural polyamine whose intracellular concentration declines during human ageing, markedly extends the lifespan of various model organisms including yeast, flies and worms. In ageing yeast, spermidine treatment triggeres epigenetic deacetylation of histone H3 through inhibition of histone acetyltransferases (HAT), leading to induction of autophagy and thereby suppressing oxidative stress and necrosis. In order to further characterize the effects by spermidine supplementation of aging yeast cultures and to understand how global histone deacetylation affects gene transcription during aging, Affymetrix-based microarray analyses of three day old as well as ten day old cultures with and without administration of spermidine was performed.
Induction of autophagy by spermidine promotes longevity.
Age, Compound, Time
View SamplesAging is associated with an increased risk of cardiovascular disease and death. Here we show that oral supplementation of the natural polyamine spermidine extends lifespan, while it exerts cardioprotective effects through reduction of cardiac hypertrophy and preservation of diastolic function in old mice. Spermidine feeding enhanced cardiac autophagy, mitophagy, mitochondrial respiration and mechano-elastical properties of cardiomyocytes in vivo, coinciding with increased titin phosphorylation and suppressed subclinical inflammation. Spermidine failed to promote cardioprotection in mice lacking the autophagy-related gene Atg5 in cardiomyocytes.
Cardioprotection and lifespan extension by the natural polyamine spermidine.
Age, Specimen part, Treatment
View Samples