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Human BJ fibroblasts containing control vs. BRD7 shRNA

ABSTRACT: Transcriptional profiling of human BJ fibroblasts comparing control FF shRNA expressing cells vs. BRD7 shRNA expressing cells under two conditions, either untreated or treated with 8uM nutln-3a for 8 hours. This experiment was done using two independent shRNAs targeting BRD7. Nutlin-3a was used to stabilize p53 and induce its transcriptional activity.

ORGANISM(S): Homo sapiens

PROVIDER: GSE22607 | GEO | 2010/07/01

SECONDARY ACCESSION(S): PRJNA128363

REPOSITORIES: GEO

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Human BJ fibroblasts containing control vs. BRD7 shRNA

Project description:Transcriptional profiling of human BJ fibroblasts comparing control FF shRNA expressing cells vs. BRD7 shRNA expressing cells under two conditions, either untreated or treated with 8uM nutln-3a for 8 hours. This experiment was done using two independent shRNAs targeting BRD7. Nutlin-3a was used to stabilize p53 and induce its transcriptional activity. Two-condition experiment, FF shRNA cells vs. BRD7 shRNAs cells in two experimental conditions, either untreated or treated with nutlin-3a.

2010-07-01 | E-GEOD-22607 | biostudies-arrayexpress

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Project description:Oncogene-induced senescence (OIS) is a p53-dependent defence mechanism against uncontrolled proliferation. Consequently, many human tumours harbour p53 mutations while others show a dysfunctional p53 pathway, frequently by unknown mechanisms. We identified BRD7, a bromodomain-containing protein whose inhibition allows full neoplastic transformation in the presence of wild-type p53. Intriguingly, in human breast tumours harbouring wild-type, but not mutant p53, the BRD7 gene locus was frequently deleted and low BRD7 expression was found in a subgroup of tumours. Functionally, BRD7 is required for efficient p53-mediated transcription of a subset of target genes. BRD7 interacts with p53 and p300, and is recruited to target gene promoters, affecting histone acetylation, p53 acetylation, and promoter activity. Thus, BRD7 suppresses tumourigenicity by serving as a p53 cofactor required for efficient induction of p53-dependent OIS. We recorded mRNA expression profiles of BJ primary fibroblasts expressing the oncogene RasV12 and either control vector, one of two BRD7 knockdown vectors, or p53 knockdown vector. In addition, we profiled genome-wide protein DNA interactions for p53 and BRD7 using ChIP-Seq. p53- and BRD7-binding sites were recorded in RasV12-expressing BJ cells; as a control we used knockdown of the gene of interest (BRD7 or p53).

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Transcriptome-profiling (RNA-seq) and Ribosome-profiling (Ribo-seq) of BJ cells treated with Nutlin-3a, an MDM2 inhibitor, which induces p53.

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Identification of differentially expressed genes between senescence and senescence bypass cells

Project description:We applied RNA-seq analysis to control and senescent human primary BJ fibroblast cells (senescence induced by activation of the oncogenic RASG12V gene), as well as in BJ cells that fully or partially bypass oncogene-idnuced senescence (OIS) due to knock-down of either p53 or BRD7 or LncRNA-OIS1 (using 4 different shRNAs).

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Homo sapiens

Project description:Human BJ fibroblasts containing control vs. BRD7 shRNA

| PRJNA128363 | ENA

H3K9me3 ChIP-Seq in BJ-HELT cells

Project description:We generated H3K9me3 profile of reads and peaks of BJ fibroblasts expressing hTERT and SV40 early region (BJ-HELT cell line).

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Genome-wide maps of Brd7 binding sites in control and BRD7 overexpressed cells.

Project description:We applied Chromatin immunoprecipation and massively parallel DNA sequencing technique, ChIP-seqencing, to identify the binding sites of Brd7 protein in human cells. ChIP-seq was applied to HEK293 cell line in control and BRD7 overexpressed cells.

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