NCOA2 is a candidate target gene of 8q gain associated with clinically aggressive prostate cancer

Genes, Chromosomes & Cancer
Maria P SilvaManuel R Teixeira

Abstract

Prostate carcinomas harboring 8q gains are associated with poor clinical outcome, but the target genes of this genomic alteration remain to be unveiled. In this study, we aimed to identify potential 8q target genes associated with clinically aggressive prostate cancer (PCa) using fluorescence in situ hybridization (FISH), genome-wide mRNA expression, and protein expression analyses. Using FISH, we first characterized the relative copy number of 8q (assessed with MYC flanking probes) of a series of 50 radical prostatectomy specimens, with available global gene expression data and typed for E26 transformation specific (ETS) rearrangements, and then compared the gene expression profile of PCa subsets with and without 8q24 gain using Significance Analysis of Microarrays. In the subset of tumors with ERG fusion genes (ERG+), five genes were identified as significantly overexpressed (false discovery rate [FDR], ≤ 5%) in tumors with relative 8q24 gain, namely VN1R1, ZNF417, CDON, IKZF2, and NCOA2. Of these, only NCOA2 is located in 8q (8q13.3), showing a statistically higher mRNA expression in the subgroup with relative 8q gain, both in the ERG+ subgroup and in the whole series (P = 0.000152 and P = 0.008, respectively). Combining all...Continue Reading

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Citations

Jul 7, 2018·NPJ Systems Biology and Applications·H Alexander EbhardtRuedi Aebersold
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