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TranscriptomicsGene expression and ChIP-chip analysis of U251 human glioblastoma cell line
Using human U251 glioblastoma cells with endogenous mutp53 expression as a model, we performed a ChIP-chip analysis of mutp53 binding sites on a custom tiling array, coupled with global expression profiling and an analysis of the epigenetic status of mutp53 regulated promoters. Mutp53 binds preferen...
ORGANISM(S): Homo sapiens 
2012-12-10 | E-GEOD-35500 | biostudies-arrayexpress
TranscriptomicsGenomic Response of Escherichia coli during coexpression of a bacteriocin release protein
Secretion of recombinant proteins to the culture medium after transport to the periplasm of gram-negative bacteria often facilitates downstream-processing. It could lead to more biological active and correct folded proteins and low contamination with host proteins, thereby reducing the costs of the ...
ORGANISM(S): Escherichia coli 
2009-08-01 | E-GEOD-16946 | biostudies-arrayexpress
TranscriptomicsMetal resistant bacterium Cupriavidus metallidurans CH34
Metal resistant bacterium Cupriavidus metallidurans CH34 uses non-conventional proteins to combat oxidative stress Keywords: Cupriavidus metallidurans; hydrogen peroxide; oxidative stress; Two-condition experiments. Comparing samples after challenging with oxidative stress versus non-induced samples...
ORGANISM(S): Cupriavidus metallidurans CH34 
2014-09-13 | E-GEOD-24094 | biostudies-arrayexpress
TranscriptomicsChIP analysis on a custom tiling array of U251 human glioblastoma cell line
Missense mutations in the TP53 gene are frequent genetic alterations in human tumor tissue and cell lines. In contrast to wild-type p53, the mutant p53 (mutp53) protein has lost the transcriptional activity towards pro-apoptotic and growth arrest genes, but retained the property to interact with DNA...
ORGANISM(S): Homo sapiens 
2012-12-10 | E-GEOD-35453 | biostudies-arrayexpress
TranscriptomicsExpression data from Arabidopsis thaliana root protoplast
BACKGROUND:Dynamic transcriptional regulation is critical for an organism's response to environmental signals and yet remains elusive to capture. Such transcriptional regulation is mediated by master transcription factors (TF) that control large gene regulatory networks. Recently, we described a dyn...
ORGANISM(S): Arabidopsis thaliana 
2016-02-08 | E-GEOD-69389 | biostudies-arrayexpress
GenomicsAntibody performance in ChIP-sequencing assays: From quality scores of public datasets to quantitative certification
We have established a certification system for antibodies to be used in chromatin immunoprecipitation assays coupled to massive parallel sequencing (ChIP-seq). This certification comprises a standardized ChIP procedure and the attribution of a numerical quality control indicator (QCi) to biological ...
ORGANISM(S): Homo sapiens 
2016-01-07 | E-GEOD-76618 | biostudies-arrayexpress
GenomicsNitric oxide regulates gene expression in cancers by controlling histone posttranslational modifications [HiSeq 2000]
Dynamic changes in histone posttranslational modifications (PTMs) are important regulators of chromatin structure and gene transcription in both normal and disease settings. Herein, we describe a novel signaling mechanism of nitric oxide (•NO) by demonstrating its ability to modulate gene expressi...
ORGANISM(S): Homo sapiens 
2015-11-05 | E-GEOD-66318 | biostudies-arrayexpress
GenomicsgDNA-seq of 7G8 subclones with different var expression patterns
The parasite Plasmodium falciparum is responsible for severe malaria, which remains a major cause of death, particularly in sub-Saharan Africa. The reference strain NF54 (or its subclone 3D7) is commonly used for controlled human malaria infection (CHMI), but recently strains with a different geogra...
ORGANISM(S): Plasmodium falciparum 
2022-09-22 | E-MTAB-12158 | biostudies-arrayexpress
GenomicsCohesin releases DNA through asymmetric ATPase-driven ring opening
Cohesin stably holds together the sister chromatids from S phase until mitosis. To do so, cohesin must be protected against its cellular antagonist Wapl. Eco1 acetylates cohesin’s Smc3 subunit, which locks together the sister DNAs. We used yeast genetics to dissect how Wapl drives cohesin from chr...
ORGANISM(S): Saccharomyces cerevisiae 
2016-02-18 | E-GEOD-76891 | biostudies-arrayexpress
TranscriptomicsFunctional enhancers at the gene-poor 8q24 cancer-linked locus
Multiple discrete regions at 8q24 were recently shown to contain alleles that predispose to many cancers including prostate, breast, and colon. These regions are far from any annotated gene and their biological activities have been unknown. Here we profiled a 5-megabase chromatin segment encompassin...
ORGANISM(S): Homo sapiens 
2009-12-18 | E-GEOD-19561 | biostudies-arrayexpress
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