The goal of this study is to compare gene expression profiles in quiescent RPE1 hTert cells treated with microtubule-stabilizing (paclitaxel) and microtubule-destabilizing poisons (combretastatin A4) Overall design: RPE 1 hTert cells were grown to full confluency, and maintained as such for 5 days to induce quiescence. Quiescent cells were treated with microtubule poisons combretastatin A4 and paclitaxel for 6 or 24 hours. Total RNA was collected and purified using the PureLink RNA Mini Kit (Invitrogen, Thermo Fisher Scientific, USA). RNA concentration and quality were determined using NanoDrop and Bioanalyzer respectively, and 500 ng of purified RNA was used as input for the Illumina TruSeq Stranded mRNA Library Prep Kit (Illumina, USA). Barcoded libraries were pooled and quantitated using KAPA, and single-end sequenced on an Illumina NextSeq (Illumina, USA). RNA-seq reads were mapped using STAR (version 2.1.0j) and processed using HTSeq-count (version 0.6.1). GRCh38 reference genome and transcript annotations were used for gene mapping; Entrez Gene identifiers and org.Hs.eg.db database were used for genome wide annotation. Differential gene expression and statistical analysis were performed using edgeR package. Genes with >50 reads per million and a fold change significantly different from zero in Wilcoxon signed-rank test (p< 0.05), were marked as differentially expressed genes, based on three biological replicates.
Tubulin mRNA stability is sensitive to change in microtubule dynamics caused by multiple physiological and toxic cues.
Specimen part, Subject
View SamplesAnalysis of the role of PARP1 in gene transcription in MCF7 cells under non-stress conditions. The hypothesis was that PARP1 activity in MCF7 cells plays a role in gene transcription. The results indicate that PARP1 inhibition does not significantly affect transcription after 6 hours of treatment.
Basal activity of a PARP1-NuA4 complex varies dramatically across cancer cell lines.
Specimen part, Cell line
View SamplesAnalysis of the role of PARP1 in gene transcription in cell lines with variable PARP1 activity.
Basal activity of a PARP1-NuA4 complex varies dramatically across cancer cell lines.
Specimen part, Cell line
View SamplesLymphocyte and breast tissue samples from overweight woman at increased risk of breast cancer before and after 1 month of intermittant energy restriction
Intermittent energy restriction induces changes in breast gene expression and systemic metabolism.
Sex, Specimen part, Time
View SamplesGlioblastoma multiforme (GBM) is an aggressive primary brain cancer that includes focal amplification of PDGFR and for which there are no effective therapies. Herein, we report the development of a genetically engineered mouse model of GBM based on autocrine, chronic stimulation of PDGFR and the analysis of GBM signaling pathways using proteomics. We discovered the tubulin-binding protein Stathmin1 (STMN1) as a PDGFR phospho-regulated target and that this mis-regulation conferred selective sensitivity to vinblastine (VB) cytotoxicity. Treatment of PDGFR GBMs with VB in mice drastically prolonged survival and was dependent on STMN1. Our work provides a rationale for evaluating genotype-specific anti-microtubule drugs as cancer treatment in select GBM patient populations.
A PDGFRα-driven mouse model of glioblastoma reveals a stathmin1-mediated mechanism of sensitivity to vinblastine.
Specimen part, Treatment
View SamplesWIN 18,446/RA treatment of neonatal mice was used to synchronize the initial wave of spermatogenesis and identify novel messages expressed within either germ or Sertoli cells as spermatogonia enter meiosis.
Riding the spermatogenic wave: profiling gene expression within neonatal germ and sertoli cells during a synchronized initial wave of spermatogenesis in mice.
Specimen part
View SamplesThis SuperSeries is composed of the SubSeries listed below.
Comparative Transcriptome Profiling Reveals Coding and Noncoding RNA Differences in NSCLC from African Americans and European Americans.
Sex, Age, Specimen part, Disease, Race, Subject
View SamplesTranslational Relevance
Comparative Transcriptome Profiling Reveals Coding and Noncoding RNA Differences in NSCLC from African Americans and European Americans.
Sex, Age, Race, Subject
View SamplesThe rapid evolution of toxin resistance in animals has important consequences for the ecology of species and our economy. Pesticide resistance in insects has been a subject of intensive study, however, very little is known about how Drosophila species became resistant to natural toxins with ecological relevance, such as -amanitin that is produced in deadly poisonous mushrooms. Here we performed a microarray study to elucidate the genes, chromosomal loci, molecular functions, biological processes, and cellular components that contribute to the -amanitin resistance phenotype in Drosophila melanogaster. We suggest that toxin entry blockage through the cuticle, phase I and II detoxification, sequestration in lipid particles, and proteolytic cleavage of -amanitin contribute in concert to this quantitative trait. We speculate that the resistance to mushroom toxins in Drosophila melanogaster and perhaps in mycophagous Drosophila species has evolved as a cross-resistance to pesticides or other xenobiotic substances.
The mechanisms underlying α-amanitin resistance in Drosophila melanogaster: a microarray analysis.
Specimen part
View SamplesWIN 18,446/RA treatment of neonatal male mice was used to synchronize spermatogenesis to 2-3 different stages of the cycle of the seminiferous epithelium in the adult testis
Processive pulses of retinoic acid propel asynchronous and continuous murine sperm production.
Sex, Specimen part
View Samples