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BET bromodomain inhibitors synergize with ATR inhibitors to induce DNA damage, apoptosis, senescence-associated secretory pathway and ER stress in Myc- induced lymphoma cells

ABSTRACT: The aim of the project was to determine the expression profiles of murine Myc-driven lymphpma cells (Lambda-820) treated with vehicle (DMSO, 1:1000), a BET inhibitor (RVX2135), an ATR inhibitor (VE-821) or a combination of RVX2135 and VE-821. All experimnets were performed in presence of 10uM Q-VD-OPH to block apoptosis. Cells were harvested 24 h after treatment start. 4 samples (DMSO, RVX2135, VE-821 or RVX2135/VE-821) in duplicates

ORGANISM(S): Mus musculus

SUBMITTER: Joydeep Bhadury

PROVIDER: E-GEOD-74873 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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BET bromodomain inhibitors synergize with ATR inhibitors to induce DNA damage, apoptosis, senescence-associated secretory pathway and ER stress in Myc- induced lymphoma cells

Project description:The aim of the project was to determine the expression profiles of murine Myc-driven lymphpma cells (Lambda-820) treated with vehicle (DMSO, 1:1000), a BET inhibitor (RVX2135), an ATR inhibitor (VE-821) or a combination of RVX2135 and VE-821. All experimnets were performed in presence of 10uM Q-VD-OPH to block apoptosis. Cells were harvested 24 h after treatment start.

2015-12-18 | GSE74873 | GEO

ATR-mediated Proteome Remodeling is a Major Determinant of Homologous Recombination Capacity in Cancer Cells

Project description:DMSO or 5uM ATR inhibitor(VE-821) were treated for 8 days on U2OS cells prior to anlaysis.

2018-07-17 | PXD010223 | Pride

Transcriptional Changes in the Aging Mouse Hippocampus

Project description:We sequenced mRNA from three age groups (3months (3M), 24 months (24M) and 29 months (29M)) from the full hippocampus and compared this to microarray analysis. Young (3 months (3M)) mice were compared to aged mice (29 months (29M)), n=4

2014-09-23 | E-GEOD-61647 | biostudies-arrayexpress

Transcriptional changes in the aging mouse hippocampus

Project description:This SuperSeries is composed of the SubSeries listed below. Refer to individual Series

2014-10-01 | E-GEOD-61918 | biostudies-arrayexpress

MOLT-4 radiosensitization by VE-821

Project description:DNA damage induction by either radio- or chemo-therapy has been the most widely used approach in cancer therapy, exploiting the genomic instability of cancer cells. A promising strategy takes advantage of tumour specific abnormalities in DNA damage response. Inhibition of the ATR/Chk1 pathway has been shown to be synthetically lethal in cells with high levels of oncogene-induced replication stress and in p53- or ATM- deficient cells. In the presented study, we aimed to elucidate molecular mechanisms underlying radiosensitization of MOLT-4 cells by VE-821, a higly potent and specific inhibitor of ATR. We combined multiple approaches: cell biology techniques to reveal the inhibitor-induced phenotypes, and quantitative proteomics, phosphoproteomics, and metabolomics to comprehensively describe drug-induced changes in irradiated cells.

2018-07-16 | PXD008925 | Pride

Affymetrix 6.0 study of sporadic motor neuron disease patients and controls.

Project description:This data was divided into three experiment sets: 1. A somatic study of sporadic motor neuron disease (SMND) brain samples that were compared to the blood from the same individual, normal control brains and disease control brans (Parkinson Disease patients); 2. A twin study comparing blood and other tissue samples from twins that were discordant for MND, concordant for MND and control twins and 3. A trio study of blood samples MND patients compared to their unaffected parents. Study 1: 36 sporadic motor neuron disease brain (lateral frontal cortex, Brodmann area 46), 34 matched sporadic motor neuron disease blood, 26 control brain (lateral frontal cortex, Brodmann area 46), 9 Parkinson Disease brain (disease controls, lateral frontal cortex, Brodmann area 46). Study 2 and study 3: 52 twin or trio blood, 4 twin hair, 1 twin sperm. 2 replicate twin blood and 1 replicate trio blood repeated at a different time. External control blood from Coriell GM15510 and GM10851.

2010-07-31 | E-GEOD-15826 | biostudies-arrayexpress

Interleukin-22 immunotherapy modulates pulmonary gene expression evocative of enhanced tissue barrier and reduces bacterial systemic invasion during severe influenza

Project description:Severe bacterial (pneumococcal) infections are commonly associated with influenza and are significant contributors to the excess morbidity and mortality of influenza. Disruption of lung tissue integrity during influenza participates in bacterial pulmonary colonization and dissemination out of the lungs. Interleukin (IL)-22 has gained considerable interest in anti-inflammatory and anti-infection immunotherapy over the last decade. In the current study, we investigated the effect of exogenous IL-22 delivery on the outcome of bacterial superinfection post-influenza. Our data show that exogenous treatment of influenza-infected mice with recombinant IL-22 reduces bacterial dissemination out of the lungs but is without effect on pulmonary bacterial burden. We describe an IL-22 specific gene signature in the lung tissue of IAV-infected (and naÃ¯ve) mice that might explain the observed effects. Indeed, exogenous IL-22 modulates gene expression profile in a way suggesting a reinforcement of tissue integrity. Our results open the way to alternative approaches for limiting post-influenza bacterial superinfection, particularly systemic bacterial invasion.

2018-05-31 | E-MTAB-6044 | biostudies-arrayexpress

The global acetylome of the human pathogen Vibrio cholerae V52 reveals lysine acetylation of major transcriptional regulators

Project description:Protein lysine acetylation is recognized as an important reversible post translational modification in all domains of life. While its primary roles appear to reside in metabolic processes, lysine acetylation has also been implicated in regulating pathogenesis in bacteria. By now, several global lysine acetylome analyses have been carried out in various bacteria, but thus far there have been no reports of lysine acetylation taking place in the important human pathogen Vibrio cholerae. In this study, we analyzed the lysine acetylproteome of the human pathogen V. cholerae V52. By applying a combination of immuno-enrichment of acetylated peptides and high resolution mass spectrometry, we identified 3402 acetylation sites on 1240 proteins. Of the acetylated proteins, more than half were acetylated on two or more sites. As reported for other bacteria, we observed that many of the acetylated proteins were involved in metabolic and cellular processes and there was an over-representation of acetylated proteins involved in protein synthesis. Of interest, we demonstrated that many global transcription factors such as CRP, H-NS, IHF, Lrp and RpoN as well as transcription factors AphB, TcpP, PhoB, and ToxR, involved in direct regulation of virulence in V. cholerae were acetylated. In addition VAS effector proteins involved in type VI secretion were acetylated. The overall level of acetylation increased during growth and was higher in stationary phase. In conclusion, this is the first global protein lysine acetylome analysis of V. cholerae and should constitute a valuable resource for in-depth studies of the impact of lysine acetylation in pathogenesis and other cellular processes.

2018-01-02 | PXD008055 | Pride

Gene expression data of fibroblasts transduced with LacZ or p63+KLF4.

Project description:To determine if fibroblasts could be reprogrammed to a keratinocyte phenotype p63+KLF4 or LacZ expressing retroviruses were transduced into primary human neonatal fibroblasts. Global gene expression profiling using U133 plus 2.0 arrays were used to deteremine the extent of reprogramming to a keratinocyte phenoypte upon transduction with p63+KLF4. Fibroblasts transduced with p63+KLF4 were also treated +/- high calcium to determine if treatment with calcium could induce differentiation of these cells. Microarray analysis was also performed on cells treated +/- calcium. For gene expression profiling, cultured human fibroblasts were infected with LacZ or p63+KLF4 expressing retroviruses. p63+KLF4 cells were also treated +/- calcium. Microarray analysis using Affymetrix HG-U133 2.0 plus arrays was performed on duplicate samples.

2013-11-03 | E-GEOD-47746 | biostudies-arrayexpress

Gene expression data on human keratinocytes with knockdown or overexpression of SNAI2

Project description:1. Keratinocytes infected with retroviruses expressing control or SNAI2 shRNAs were cultured in growth medium and Affymetrix HG-U133 plus 2.0 arrays were used to determine global gene expression profiles. 2. Keratinocytes infected with retroviruses overexpressing LACZ or SNAI2 were cultured in growth medium and Affymetrix HG-U133 plus 2.0 arrays were used to determine global gene expression profiles. Keratinocytes with knockdown or overexpression of SNAI2 were used to determine gene expression profiles

2014-10-15 | E-GEOD-55269 | biostudies-arrayexpress

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