Transcription regulation involves enzyme-mediated changes in chromatin structure. Here, we describe a novel mode of histone crosstalk during gene silencing, in which histone H2A monoubiquitylation is coupled to the removal of histone H3 Lys 36 dimethylation (H3K36me2). This pathway was uncovered through the identification of dRING-associated factors (dRAF), a novel Polycomb group (PcG) silencing complex harboring the histone H2A ubiquitin ligase dRING, PSC and the F-box protein, and demethylase dKDM2. In vivo, dKDM2 shares many transcriptional targets with Polycomb and counteracts the histone methyltransferases TRX and ASH1. Importantly, cellular depletion and in vitro reconstitution assays revealed that dKDM2 not only mediates H3K36me2 demethylation but is also required for efficient H2A ubiquitylation by dRING/PSC. Thus, dRAF removes an active mark from histone H3 and adds a repressive one to H2A. These findings reveal coordinate trans-histone regulation by a PcG complex to mediate gene repression.
dKDM2 couples histone H2A ubiquitylation to histone H3 demethylation during Polycomb group silencing.
Cell line
View SamplesMicroarray whole-transcriptome profiling in HCT116 and HepG2 cells treated with Melicope ptelefolia leaf extract reveals transcriptome profles exhibiting anticancer activity
Microarray gene expression profiling in colorectal (HCT116) and hepatocellular (HepG2) carcinoma cell lines treated with <i>Melicope ptelefolia</i> leaf extract reveals transcriptome profiles exhibiting anticancer activity.
Specimen part, Cell line, Treatment
View SamplesThe Hippo pathway is an emerging signaling cascade involved in the regulation of organ size control. It consists of evolutionally conserved protein kinases that are sequentially phosphorylated and activated. The active Hippo pathway subsequently phosphorylates a transcription coactivator, YAP, which precludes its nuclear localization and transcriptional activation. Identification of transcriptional targets of YAP in diverse cellular contexts is therefore critical to the understanding of the molecular mechanisms in which the Hippo pathway restricts tissue growth.
Hippo signaling regulates microprocessor and links cell-density-dependent miRNA biogenesis to cancer.
Specimen part
View SamplesHere we harnessed the potential of RNA sequencing in 89 human pancreatic islet donors to identify genes and exons regulated in this relevant tissue for T2D. Overall design: mRNA profiles of 89 human pancreatic islet donors having different levels of blood glucose (HbA1c) with and without T2D. The data was generated by deep sequencing using Illumina HiSeq 2000.
Orphan G-protein coupled receptor 183 (GPR183) potentiates insulin secretion and prevents glucotoxicity-induced β-cell dysfunction.
Sex, Age, Specimen part, Subject
View SamplesThese patients proved resistant to docetaxel treatment, exhibiting residual tumor of 25% or greater remaining volume.
Gene expression profiling for the prediction of therapeutic response to docetaxel in patients with breast cancer.
No sample metadata fields
View SamplesThese patients were sensitive to docetaxel treatment, exhibiting less than 25% residual tumor.
Gene expression profiling for the prediction of therapeutic response to docetaxel in patients with breast cancer.
No sample metadata fields
View SamplesThere exists a common deletion polymorphism on the genetic loci of APOBEC3B and this polymorphism exist in ~37% of East Asians and ~7% of Europeans. Germline APOBEC3B deletion has bee27233495n shown to confer modest risk to breast cancer in both East Asian women and women of European descent
Germline APOBEC3B deletion is associated with breast cancer risk in an Asian multi-ethnic cohort and with immune cell presentation.
Sex, Disease stage
View SamplesTranscriptome levels of matched patient-derived xenograft (PDX) in vitro-in vivo models. Overall design: Comparison of gene expression levels between matched patient-derived xenograft in vitro-in vivo models.
Generation of matched patient-derived xenograft in vitro-in vivo models using 3D macroporous hydrogels for the study of liver cancer.
Specimen part, Disease, Subject
View Samplesneuroblastoma cells derived from PDOX models were treated with the kinase inhibitor. Overall design: 5 repetitions of control and IBL-302 treated cells were harvest and submitted for RNAseq analysis
Anti-tumor effects of PIM/PI3K/mTOR triple kinase inhibitor IBL-302 in neuroblastoma.
Specimen part, Treatment, Subject
View SamplesThis SuperSeries is composed of the SubSeries listed below.
NRASG12V oncogene facilitates self-renewal in a murine model of acute myelogenous leukemia.
Specimen part
View Samples