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Studies of ETS-mediated prostate oncogenesis have been hampered by a lack of suitable experimental systems. Here we describe a new conditional mouse model that shows robust, homogenous ERG expression throughout the prostate. When combined with homozygous Pten loss, the mice developed accelerated, highly penetrant invasive prostate cancer. In mouse prostate tissue, ERG markedly increased androgen receptor (AR) binding. Robust ERG-mediated transcriptional changes, observed only in the setting of Pten loss, included the restoration of AR transcriptional output and upregulation of genes involved in cell death, migration, inflammation and angiogenesis. Similarly, ETS variant 1 (ETV1) positively regulated the AR cistrome and transcriptional output in ETV1-translocated, PTEN-deficient human prostate cancer cells. In two large clinical cohorts, expression of ERG and ETV1 correlated with higher AR transcriptional output in PTEN-deficient prostate cancer specimens. We propose that ETS factors cause prostate-specific transformation by altering the AR cistrome, priming the prostate epithelium to respond to aberrant upstream signals such as PTEN loss.
Pubmed ID: 23817021
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View all literature mentionsBiomedical and genomic research center located in Cambridge, Massachusetts, United States. Nonprofit research organization under the name Broad Institute Inc., and is partners with Massachusetts Institute of Technology, Harvard University, and the five Harvard teaching hospitals. Dedicated to advance understanding of biology and treatment of human disease to improve human health.
View all literature mentionsA horizontally and vertically structured database that pulls scientific and medical information and describes it consistently using the Ingenuity Ontology. The Knowledge Base pulls information from journals, public molecular content databases, and textbooks. Data is curated and and integrated into the Knowledge Base .
View all literature mentionsAn easy-to-use, highly customizable genome browser you can use to visualize and explore genomic data and annotations, including RNA-Seq, ChIP-Seq, tiling array data, and more.
View all literature mentionsCell line LNCaP is a Cancer cell line with a species of origin Homo sapiens (Human)
View all literature mentionsMus musculus with name C57BL/6J from IMSR.
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