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MetabolomicsMetabolic responses induced by DNA damage and poly (ADP-ribose) polymerase (PARP) inhibition in MCF-7 cells
Genomic instability is one of the hallmarks of cancer. Several chemotherapeutic drugs and radiotherapy induce DNA damage to prevent cancer cell replication. Cells in turn activate different DNA damage response (DDR) pathways to either repair the damage or induce cell death. These DDR pathways also e...
2015-08-01 | MTBLS177 | MetaboLights
GenomicsEssential role of poly(ADP-ribosyl)ation in cocaine action
Many of the long-term effects of cocaine on the brain's reward circuitry have been shown to be mediated by alterations in gene expression. Several chromatin modifications, including histone acetylation and methylation, have been implicated in this regulation, but the effect of other histone modifica...
ORGANISM(S): Mus musculus 
2014-02-20 | E-GEOD-55136 | biostudies-arrayexpress
TranscriptomicsRNAi of human MCF7 cells knocked down for PARP-1 or PARGs
Poly(ADP-ribose) polymerase-1 (PARP-1) and poly(ADP-ribose) glycohydrolase (PARG) are enzymes that modify target proteins in the nucleus by the addition and removal, respectively, of ADP-ribose polymers. Although a role for PARP-1 in gene regulation has been well established, the role of PARG is le...
ORGANISM(S): Homo sapiens 
2009-10-30 | E-GEOD-12952 | biostudies-arrayexpress
TranscriptomicsTranscription profiling of thymotyctes from parp-2 -/- mice to determine whether dis-regulation of a genetic pathway could explain the increased apoptosis of these cells
In order to determine whether dis-regulation of a genetic pathway could explain the increased apoptosis of parp-2-/- double positive thymocytes, the gene expression profiles in double positive thymocytes derived from wild-type and parp-2-/- mice were analysed using Affymetrix oligonucleotide chips (...
ORGANISM(S): Mus musculus 
2007-05-23 | E-MEXP-755 | biostudies-arrayexpress
TranscriptomicsTranscription profiling of human Parp-1 deficient and wild type T cells following CD3 and CD3/CD28 activation
Primary T cells were isolated from spleen of Parp-1-/- and wild-type mice by magnetic depletion of non-T cells using a MACS Pan-T Cell isolation kit, according to the manufacturer´s instruction (Mintenyi Biotec, Bergisch Gladbach, Germany). Purity was assessed by flow cytometry analysis using antibo...
ORGANISM(S): Mus musculus 
2008-08-04 | E-MEXP-1237 | biostudies-arrayexpress
TranscriptomicsPARP-1, H3 and H3K4me3 ChIP-chip from MCF7 cells
We are examining the mechanisms by which the nuclear enzyme PARP-1 regulates gene expression. We performed ChIP-chip for PARP-1, histone H3 and H3K4me3 (lysine 4 trimethylation on histone H3) in MCF7 breast carcinoma cells, and looked at 23550 RefSeq genes to determine binding patterns of these fac...
ORGANISM(S): Homo sapiens 
2010-09-20 | E-GEOD-19619 | biostudies-arrayexpress
TranscriptomicsRNA-seq from control and macroH2A1-depleted IMR90 primary human lung fibroblasts
The histone variant macroH2A1 and the poly(ADP-ribose) polymerase PARP-1 both regulate gene transcription by modulating chromatin structure and function. Of the two macroH2A1 splice variants, macroH2A1.1 and macroH2A1.2, the former is often suppressed in cancer and has the unique ability to interact...
ORGANISM(S): Homo sapiens 
2014-09-15 | E-GEOD-54846 | biostudies-arrayexpress
TranscriptomicsDepletion of PARP-2 in HepG2 cells
Poly(ADP-ribose) polymerase-2 (PARP-2) is acknowledged as a DNA repair enzyme; however, recently metabolic properties had been attributed to it. Hereby, we examined the metabolic consequences of PARP-2 ablation in liver. Microarray analysis of PARP-2 knockdown HepG2 cells revealed the dysregulation ...
ORGANISM(S): Homo sapiens 
2013-12-31 | E-GEOD-43981 | biostudies-arrayexpress
TranscriptomicsExamination of functional interplay between NMNAT-1 (a nuclear NAD+ synthase) and PARP-1 (a nuclear poly(ADP-ribose) polymerase)
NMNAT-1 and PARP-1, two key enzymes in the NAD+ metabolic pathway, localize to the nucleus where integration of their enzymatic activities has the potential to control a variety of nuclear processes. Using a variety of biochemical, molecular, cell-based, and genomic assays, we show that NMNAT-1 and...
ORGANISM(S): Homo sapiens 
2012-02-15 | E-GEOD-35358 | biostudies-arrayexpress
TranscriptomicsMRE11 Deficiency Increases Sensitivity to Poly(ADP-ribose) Polymerase Inhibition in Microsatellite Unstable Colorectal Cancers.
We have performed bioinformatic approaches to identify the level of enrichment between gene expression profiles characterizing MSI tumors and gene changes induced in vitro by the PARP-1 inhibitor Phenanthridinone and others using the Connectivity Map tool. In a first step, we have anyzed the express...
ORGANISM(S): Homo sapiens 
2011-04-07 | E-GEOD-26682 | biostudies-arrayexpress
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