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Expression profiling of human prostate non-tumorigenic RWPE-1 cells after overexpressing ERG and ETV1, and ERG and ETV1 silencing on prostate cancer cells LNCaP and VCaP, respectively

ABSTRACT: Chromosomal rearrangements involving ETS factors, ERG and ETV1, occur frequently in prostate cancer. We here examine human prostate non-tumorigenic RWPE-1 cells with ERG- or ETV1-expressing stable RWPE-1 cell. RWPE-1 stable cell clones overexpressing ERG and ETV1 were grown under normal conditions. Total RNA was extracted from three biological replicates. This was used to hybridize to Affymetrix expression arrays using the HG-U133 Plus 2.0 platform.

ORGANISM(S): Homo sapiens

SUBMITTER: Esther Baena

PROVIDER: E-GEOD-39353 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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Expression profiling of human prostate non-tumorigenic RWPE-1 cells after overexpressing ERG and ETV1, and ERG and ETV1 silencing on prostate cancer cells LNCaP and VCaP, respectively

Project description:Chromosomal rearrangements involving ETS factors, ERG and ETV1, occur frequently in prostate cancer. We here examine human prostate non-tumorigenic RWPE-1 cells with ERG- or ETV1-expressing stable RWPE-1 cell.

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Project description:RWPE benign prostatic epithelial cells were infected with a lentivirus expressing ETV1 or GUS (control), and stable clones were isolated by puromycin selection. ETV1 over-expression, recapitulating ETS gene rearrangements observed in vivo, confers invasiveness in the benign prostate cell line RWPE. Keywords: genetic modification Four hybridizations in total were performed using RWPE cells stably expressing ETV1 or GUS (control) on Agilent Whole Human Genome Oligonucleotide Microarrays. RWPE-ETV1 (Cy5) / RWPE-GUS (Cy3) and a dye flip were performed in duplicate

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Expression profiling of human prostate VCaP and LNCaP cancer cells after silencing ERG or ETV1, respectively

Project description:Chromosomal rearrangements involving ETS factors, ERG and ETV1, occur frequently in prostate cancer. We here examine human prostate cancer cells control VCaP and LNCaP cells with ERG- or ETV1-silenced VCaP or LNCaP cells, respectively, in hormone deprived and stimulated conditions. VCAP and LNCaP cells, 24 hr after ERG or ETV1 RNA interference, respectively, were grown in hormone-depleted conditions for 2 days, and then in the presence of EtOH (vehicle) or 10nM DHT for 16hr. Total RNA was extracted from three biological replicates. This was used to hybridize to Affymetrix expression arrays using the HG-U133 Plus 2.0 platform.

2013-03-01 | E-GEOD-39354 | biostudies-arrayexpress

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Project description:Chromosomal rearrangements involving ETS factors, ERG and ETV1, occur frequently in prostate cancer. How these factors contribute to tumorigenesis and whether they play similar in vivo roles remain elusive. We show that ERG and ETV1 control a common transcriptional network but in an opposing fashion. In mice with ERG or ETV1 targeted to the endogenous Tmprss2 locus, either factors cooperated with Pten-loss, leading to localized cancer, but only ETV1 supported development of advanced adenocarcinoma, likely through enhancement of androgen receptor signaling and steroid biosynthesis. Indeed, ETV1 expression promotes autonomous testosterone production, which may contribute to tumor progression to castration-resistant prostate cancer. Patient data confirmed association of ETV1 expression with aggressive disease. We conclude that despite many shared targets, ERG and ETV1 contribute differently to prostate tumor biology. Hence, prostate cancers with these fusions should be considered as distinct subtypes for patient stratification and therapy.

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Expression profiling of mouse primary prostate luminal cells from WT and T-ETV1 mice, which contains human ETV1 cDNA under the endogenous Tmprss2 promoter.

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