using RNA-seq we characterized gene expression changes occuring upon knockout of BAP1, ASXL1, ASXL2, ASXL1/2 or Polycomb genes RING1B and EZH2. We also investigated the response to retinoic acid treatment in wild-type and BAP1 KO cells. Overall design: Examination of transcript abundance in wild-type HAP1 cells and in 9 different HAP1-mutated cell lines as well as upon retinoic acid treatment in wild-type and BAP1 KO cells. Two biological replicated were performed for each condition.
BAP1 complex promotes transcription by opposing PRC1-mediated H2A ubiquitylation.
Cell line, Treatment, Subject
View SamplesCharacterization of gene expression changes occuring upon knockout of RING1A, RING1B, and BAP1. Overall design: Four Samples
BAP1 complex promotes transcription by opposing PRC1-mediated H2A ubiquitylation.
Specimen part, Treatment, Subject
View SamplesWe report application of RNA-seq to quantify gene expression changes in fasted mouse livers compared to re-fed controls. Overall design: RNA-seq from livers of re-fed and 48h fasted mice.
Histone propionylation is a mark of active chromatin.
Sex, Specimen part, Treatment, Subject
View SamplesParadoxical cryptococcosis-associated immune reconstitution inflammatory syndrome
Transcriptomic Predictors of Paradoxical Cryptococcosis-Associated Immune Reconstitution Inflammatory Syndrome.
Specimen part
View SamplesCholecystokinin (CCK) is a satiety hormone produced by discrete enteroendocrine cells scattered among absorptive cells of the small intestine. CCK is released into blood following a meal; however, the mechanisms inducing hormone secretion are largely unknown. Ingested fat is the major stimulant of CCK secretion. We recently identified a novel member of the lipoprotein remnant receptor family known as immunoglobulin-like domain containing receptor 1 (ILDR1) in intestinal CCK cells and postulated that this receptor conveyed the signal for fat-stimulated CCK secretion. In the intestine, ILDR1 is expressed exclusively in CCK cells. Orogastric administration of fatty acids elevated blood levels of CCK in wild type but not ILDR1-deficient mice, although the CCK secretory response to trypsin inhibitor was retained. The uptake of fluorescently labeled lipoproteins in ILDR1-transfected CHO cells and release of CCK from isolated intestinal cells required a unique combination of fatty acid plus HDL. CCK secretion secondary to ILDR1 activation is associated with increased [Ca2+]i consistent with regulated hormone release. These findings demonstrate that ILDR1 regulates CCK release through a mechanism dependent on fatty acids and lipoproteins and that absorbed fatty acids regulate gastrointestinal hormone secretion.
Immunoglobulin-like domain containing receptor 1 mediates fat-stimulated cholecystokinin secretion.
Specimen part
View SamplesTo characterize the effect of menthol on macrophages, comprehensive microarray analysis was performed in RAW 264.7 macrophage.
Menthol, a unique urinary volatile compound, is associated with chronic inflammation in interstitial cystitis.
Cell line, Treatment
View SamplesThis SuperSeries is composed of the SubSeries listed below.
Cardiac transcriptome profiling of diabetic Akita mice using microarray and next generation sequencing.
Specimen part
View SamplesHere we show that biotin-labelled miR-34a can be loaded to AGO2, and AGO2 immunoprecipitation can pulldown biotinylated miR-34a (Bio-miR pulldown). RNA-sequencing (RNA-seq) of the Bio-miR pulldown RNAs efficiently identified miR-34a mRNA targets, which could be verified with luciferase assays. In contrast to the approach of Bio-miR pulldown, RNA-seq of miR-34a overexpression samples had limited value in identifying direct targets of miR-34a. It seems that pulldown of 30 -Biotin-tagged miRNA can identify bona fide microRNA targets at least for miR34a. Overall design: biotin-labelled miR-34a pulldown and RNA sequencing of miR-34a overexpression samples
Comparing two approaches of miR-34a target identification, biotinylated-miRNA pulldown vs miRNA overexpression.
Cell line, Subject
View SamplesThis SuperSeries is composed of the SubSeries listed below.
An aberrant transcription factor network essential for Wnt signaling and stem cell maintenance in glioblastoma.
Specimen part, Cell line
View SamplesGlioblastoma (GBM) is thought to be driven by a sub-population of cancer stem cells (CSCs) that self-renew and recapitulate tumor heterogeneity, yet remain poorly understood. Here we present a comparative epigenomic analysis of GBM CSCs that reveals widespread activation of genes normally held in check by Polycomb repressors. These activated targets include a large set of developmental transcription factors (TFs) whose coordinated activation is unique to the CSCs. We demonstrate that a critical factor in the set, ASCL1, activates Wnt signaling by repressing the negative regulator DKK1. We show that ASCL1 is essential for maintenance and in vivo tumorigenicity of GBM CSCs. Genomewide binding profiles for ASCL1 and the Wnt effector LEF1 provide mechanistic insight and suggest widespread interactions between the TF module and the signaling pathway. Our findings demonstrate regulatory connections between ASCL1, Wnt signaling and collaborating TFs that are essential for the maintenance and tumorigenicity of GBM CSCs.
An aberrant transcription factor network essential for Wnt signaling and stem cell maintenance in glioblastoma.
Cell line
View Samples