Statins reduce cardiovascular disease risk by lowering plasma low density lipoprotein (LDL)-cholesterol. To identify novel pathways that modulate statin response, we assessed the influence of simvastatin exposure on expression quantitative trait locus (eQTL) associations across the genome in 480 lymphoblastoid cell lines (LCLs). Cell lines were derived blood samples collected ant entry visit from participants in the Cholesterol and Pharmacogenomics (CAP) trial, who underwent a 6 week 40mg/day simvastatin trial. We identified 4590 cis-eQTLS that were independent of treatment status (FDR=1%) and six cis-eQTLS for which there was evidence of an interaction with treatment (FDR=20%). Genotypes and Phenotypes derived from these indivudals are available through dbGaP (Accession Number). eQTL results are available at: http://eqtl.uchicago.edu/cgi=bin/gbrowse/eqtl/
HNRNPA1 regulates HMGCR alternative splicing and modulates cellular cholesterol metabolism.
Sex, Subject
View SamplesThe gene expression profling between Control and 300 mg/kg PhIP treatment in ventral prostate lobe of male F344 rats
Early detection of prostate carcinogens by immunohistochemistry of HMGB2.
Specimen part
View SamplesTo gain insight into the dynamic molecular processes that are altered during prolonged wakefulness and during sleep. We performed an RNA expression profiling study examining temporal changes in the brain of Drosophila in relationship to the duration of prior sleep or wakefulness. Our experimental design allowed us to determine whether genes identified as differentially regulated between sleep and wakefulness were up- or down-regulated in these states.
Multiple mechanisms limit the duration of wakefulness in Drosophila brain.
Sex, Age, Specimen part
View SamplesTo test whether vitamin D has a functionally important effect upon primary alveolar epithelial type II cells we used gene expression microarray to identify genes that are regulated by 25-dihydroxyvitamin D in adult alveolar type II cells.
Vitamin D deficiency contributes directly to the acute respiratory distress syndrome (ARDS).
Specimen part, Treatment, Subject
View SamplesThese studies address temporal changes in gene expression during spontaneous sleep and extended wakefulness in the mouse cerebral cortex, a neuronal target for processes that control sleep; and the hypothalamus, an important site of sleep regulatory processes. We determined these changes by comparing expression in sleeping animals sacrificed at different times during the lights on period, to that in animals sleep deprived and sacrificed at the same diurnal time.
Macromolecule biosynthesis: a key function of sleep.
Sex, Age, Specimen part
View SamplesHeparan sulfate (HS), a long linear polysaccharide, is implicated in various steps of tumorigenesis, including angiogenesis. We successfully interfered with HS biosynthesis using a peracetylated 4-deoxy analog of the HS constituent GlcNAc and studied the compounds metabolic fate and its effect on angiogenesis. The 4-deoxy analog was activated intracellularly into UDP-4-deoxy-GlcNAc and HS expression was inhibited up to ~96% (IC50 = 16 M). HS chain size was reduced, without detectable incorporation of the 4-deoxy analog, likely due to reduced levels of UDP-GlcNAc and/or inhibition of glycosyltransferase activity. Comprehensive gene expression analysis revealed reduced expression of genes regulated by HS binding growth factors as FGF-2 and VEGF. Cellular binding and signaling of these angiogenic factors was inhibited. Micro-injection in zebrafish embryos strongly reduced HS biosynthesis, and angiogenesis was inhibited in both zebrafish and chicken model systems. All these data identify 4-deoxy-GlcNAc as a potent inhibitor of HS synthesis which hampers pro-angiogenic signaling and neo-vessel formation.
Interfering with UDP-GlcNAc metabolism and heparan sulfate expression using a sugar analogue reduces angiogenesis.
Cell line, Treatment
View SamplesDuring an incompatible or compatible interaction between rice (Oryza sativa) and the Asian rice gall midge (Orseolia oryzae), a lot of genetic reprogamming occurs in the plant host
Metabolic and transcriptomic changes induced in host during hypersensitive response mediated resistance in rice against the Asian rice gall midge.
No sample metadata fields
View SamplesBackground:
Gene profile analysis of osteoblast genes differentially regulated by histone deacetylase inhibitors.
No sample metadata fields
View SamplesHIV Tg rats exhibit pulmonary hypertension and pulmonary artery remodeling. In an effort to begin to understand cell signaling pathways which are altered in lungs from HIV transgenic rats, we used microarray analysis.
Human immunodeficiency virus transgenic rats exhibit pulmonary hypertension.
Sex, Age, Specimen part
View SamplesOocyte-derived paracrine factors and estrogens cooperate to regulate the function and development of mouse cumulus cells.
Cooperative effects of 17β-estradiol and oocyte-derived paracrine factors on the transcriptome of mouse cumulus cells.
Sex, Specimen part, Treatment
View Samples