We combined the nuclear run-on (NRO) assay which labels and captures nascent transcripts with high throughput DNA sequencing to examine transcriptional activity in Saccharomyces cerevisiae. Overall design: Examination of nascent transcripts and steady-state transcripts in exponentially growing and heat-shock treated yeast.
Genome-Wide Analysis of Nascent Transcription in Saccharomyces cerevisiae.
Cell line, Treatment, Subject
View SamplesSeven novel and potent Raf small molecule kinase inhibitors were evaluated in 7-day oral repeat-dose rat toxicity studies. All compounds tested induced hyperplasia in multiple tissues. Microarrays were used to investigate transciptional changes associated by treatment with a single compound to gain insight into the cellular changes that may contribute to the tissue hyperplasia.
Raf inhibition causes extensive multiple tissue hyperplasia and urinary bladder neoplasia in the rat.
Sex, Specimen part, Treatment
View SamplesTo investigate the role of AP-1 in Src-mediated transformation, we undertook a gene profiling study to characterize the transcriptomes of v-Src-transformed CEF expressing either the c-Jun dominant-negative mutant TAM67 or JunD shRNA.
JunD/AP-1 Antagonizes the Induction of DAPK1 To Promote the Survival of v-Src-Transformed Cells.
Specimen part
View SamplesObjective: To determine the effects of age and topographic location on gene expression in human neural retina.
Effects of aging and anatomic location on gene expression in human retina.
Sex, Age
View SamplesOligodendrocyte precursor cells from postnatal day 10 optic nerve remained in a developmentally immature state in LIF-/- mice. Partial recovery of myelin genes is seen in LIF-/- mice by postnatal day 14 in the optic nerve. Very little difference in myelin genes in the optic nerve is seen by postnatal day 35 (adult).
Leukemia inhibitory factor regulates the timing of oligodendrocyte development and myelination in the postnatal optic nerve.
Sex, Specimen part
View SamplesThis series includes the global gene expression profile of the vastus lateralis muscle for 10 young (19-25 years old) and 12 older (70-80 years old) male subjects.
Identification of a molecular signature of sarcopenia.
No sample metadata fields
View SamplesGlobal transcriptome analysis showed that human lymphatic endothelial cells (LECs) grown on a soft matrix exhibit increased GATA2 expression, concomitant with a GATA2-dependent upregulation of genes involved in cell migration and lymphangiogenesis, including the key lymphangiogenic growth factor receptor VEGFR3.
Matrix stiffness controls lymphatic vessel formation through regulation of a GATA2-dependent transcriptional program.
Specimen part
View SamplesData for replicate Drn1-TAP and Dbr1-TAP CLIP-seq experiments to identify RNA-protein interactions Overall design: Drn1-TAP and Dbr1-TAP CLIP-seq
A homolog of lariat-debranching enzyme modulates turnover of branched RNA.
Disease, Subject
View SamplesHistone variant H2A.Z occupies the promoters of active and poised, bivalent genes in ESCs to regulate developmental programs, yet how it contributes to these contrasting states is poorly understood. Here, we investigate the function of H2A.Z.1 mono-ubiquitylation (H2A.Z.1ub) by mutation of the PRC1 target residues (H2A.Z.1K3R3). We show that H2A.Z.1K3R3 is properly incorporated at target promoters in murine ESCs (mESCs), however, loss of mono-ubiquitylation leads to de-repression of bivalent genes, loss of Polycomb binding, and to faulty lineage commitment. Using quantitative proteomics, we find that tandem bromodomain proteins, including the BET family member Brd2, are enriched in H2A.Z.1 chromatin. We further show that Brd2 is gained at de-repressed promoters in H2A.Z.1K3R3 mESCs whereas Brd2 inhibition restores gene silencing at these sites. Together, our study reveals an antagonistic relationship between H2A.Z.1ub and Brd2 to regulate the transcriptional balance at bivalent genes to enable proper execution of developmental programs. Overall design: RNA-Seq analysis on mouse embryonic stem cells harboring H2A.Z or H2A.Z.K3R3 (3 C-terminal lysines mutated to arginines) tagged with YFP, in the presence of a knockdown hairpin targeting the endogenous H2A.Z transcript.
H2A.Z.1 Monoubiquitylation Antagonizes BRD2 to Maintain Poised Chromatin in ESCs.
No sample metadata fields
View SamplesGenome-wide DNA methylation patterns are established and maintained by the coordinated action of three DNA methyltransferases, DNMT1, DNMT3A, and DNMT3B. DNMT3B hypomorphic germline mutations are responsible for two-thirds of Immunodeficiency, Centromere Instability, Facial Anomalies (ICF) syndrome cases. The molecular defects in transcription, DNA methylation, and chromatin structure in ICF cells remain relatively uncharacterized.
DNA methyltransferase 3B (DNMT3B) mutations in ICF syndrome lead to altered epigenetic modifications and aberrant expression of genes regulating development, neurogenesis and immune function.
No sample metadata fields
View Samples