To analyze the functional relevance of LSD1 in neuroblastic tumors, SH-SY5Y cells were transiently transfected with siRNA directed against LSD1 or with a scrambled control siRNA. Microarray analysis revealed changes in expression that were consistent with these observations 72 hours after LSD1 knock-down. At this time, 28 genes were significantly induced at least 1.5-fold and 29 genes were significantly repressed at least 1.5-fold. Among the 28 induced genes, 4 are markers of cytoskeletal remodelling (TNS1, TPM1, DNM2, DNAL4), indicating differentiation, and 3 (TPM1, DNM2 and SHANK2) are functionally linked to neurite dynamics and synaptic trafficking. TaqMan quantitative RT-PCR confirmed the expression changes detected via microarray analysis for LSD1, DNAL4, DNM2, TNS1 and TPM1
Lysine-specific demethylase 1 is strongly expressed in poorly differentiated neuroblastoma: implications for therapy.
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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 SamplesAnalysis of the abh1 mutant Arabidopsis plants following treatment with 50 uM abscisic acid (ABA). ABH1 encodes the large (80kDa) subunit of the nuclear mRNA cap binding complex and affects early ABA signal transduction events (Hugouvieux et al., 2001, Cell 106, 477).
mRNA cap binding proteins: effects on abscisic acid signal transduction, mRNA processing, and microarray analyses.
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View SamplesA dataset for coordinated transcriptome analysis of the effect of ethanol on human embryonic cerebral slices in vitro and on the mouse embryonic cerebral cortex in a in vivo model.
Combined transcriptome analysis of fetal human and mouse cerebral cortex exposed to alcohol.
Time
View SamplesGene expression from primary neuronal, astrocytic, oligodendrocytic and microglial cultures, as well as from RNA mixtures thereof.
Population-specific expression analysis (PSEA) reveals molecular changes in diseased brain.
Specimen part
View SamplesHigh environmental temperatures induce detrimental effects on various reproductive processes in cattle. According to the predicted global warming the number of days with unfavorable ambient temperatures will further increase. The objective of this study was to investigate effects of acute heat stress during the late pre-ovulatory phase on morphological, physiological and molecular parameters of dominant follicles in cycling cows during lactation. Eight German Holstein cows in established lactation were exposed to heat stress (28C) or thermoneutral conditions (15C) with pair-feeding for four days. After synchronization growth of dominant follicles was monitored by ultrasonogrphy, and 21 hrs after an induced pre-ovulatory LH surge antral steroid hormones and granulosa cell-specific gene expression profiles were determined. The data showed that the pre-ovulatory growth of dominant follicles and the estradiol, but not the progesterone concentrations tended to be slightly affected. mRNA microarray and hierarchical cluster analysis revealed distinct expression profiles in granulosa cells derived from heat stressed compared to pair-fed animals. Among the 255 affected genes heatstress-, stress- or apoptosis associated genes were not present. But instead, we found up-regulation of genes essentially involved in G-protein coupled signaling pathways, extracellular matrix composition, and several members of the solute carrier family as well as up-regulation of FST encoding follistatin. In summary, the data of the present study show that acute pre-ovulatory heat stress can specifically alter gene expression profiles in granulosa cells, however without inducing stress related genes and pathways and suggestively can impair follicular growth due to affecting the activin-inhibin-follistatin system.
Exposure of Lactating Dairy Cows to Acute Pre-Ovulatory Heat Stress Affects Granulosa Cell-Specific Gene Expression Profiles in Dominant Follicles.
Specimen part
View SamplesActivity-dependent gene expression is central for sculpting neuronal connectivity in the brain. Despite the importance for synaptic plasticity, a comprehensive analysis of the temporal changes in the transcriptomic response to neuronal activity is lacking. In a genome wide survey we identified genes that were induced at 1, 4, 8, or 24 hours following neuronal activity in the hippocampus.
Genome-wide profiling of the activity-dependent hippocampal transcriptome.
Sex, Age, Specimen part, Time
View SamplesBackground: Moderate hypothermia (32oC for 12 72 hours) has therapeutic applications, but the mechanisms by which it affects cellular function are unclear. We tested the hypothesis that moderate hypothermia produces broad changes in gene expression by human cells at the level of mRNA.
Effect of moderate hypothermia on gene expression by THP-1 cells: a DNA microarray study.
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View SamplesSTEP (striatal-enriched tyrosine phosphatase) is a brain-specific phosphatase named for its robust expression in striatum. Brains from homozygous and heterozygous STEP knockout mice and wild-type littermates were harvested, and striatum microdissected. RNA was extracted and hybridized to Affymetrix 230_2 microarray chips.
Downstream effects of striatal-enriched protein tyrosine phosphatase reduction on RNA expression in vivo and in vitro.
Sex, Specimen part, Treatment
View SamplesComparison by expression profiling of tissue from dKO (utrophin/dystrophin-deficient) and MDX mice at 8 weeks of age. Independent triplicate analyses/strain were done for extraocular, hindlimb, and cardiac muscle.
Analysis of gene expression differences between utrophin/dystrophin-deficient vs mdx skeletal muscles reveals a specific upregulation of slow muscle genes in limb muscles.
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View Samples