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- W2059527292 abstract "Abstract BACKGROUND Aberrant DNA methylation has been implicated as a key survival mechanism in cancer, whereby promoter hypermethylation silences genes essential for many cellular processes including apoptosis. Limited data is available on the methylation profile of apoptotic genes in prostate cancer (CaP). The aim of this study was to profile methylation of apoptotic‐related genes in CaP using denaturing high performance liquid chromatography (DHPLC). METHODS Based on an in silico selection process, 13 genes were screened for methylation in CaP cell lines using DHPLC. Quantitative methylation specific PCR was employed to determine methylation levels in prostate tissue specimens (n = 135), representing tumor, histologically benign prostate, high‐grade prostatic intraepithelial neoplasia and benign prostatic hyperplasia. Gene expression was measured by QRT‐PCR in cell lines and tissue specimens. RESULTS The promoters of BIK , BNIP3 , cFLIP , TMS1 , DCR1 , DCR2 , and CDKN2A appeared fully or partially methylated in a number of malignant cell lines. This is the first report of aberrant methylation of BIK , BNIP3 , and cFLIP in CaP. Quantitative methylation analysis in prostate tissues identified 5 genes ( BNIP3 , CDKN2A , DCR1 , DCR2 and TMS1 ) which were frequently methylated in tumors but were unmethylated in 100% of benign tissues. Furthermore, 69% of tumors were methylated in at least one of the five‐gene panel. In the case of all genes, except BNIP3 , promoter hypermethylation was associated with concurrent downregulation of gene expression. CONCLUSION Future examination of this “CaP apoptotic methylation signature” in a larger cohort of patients is justified to further evaluate its value as a diagnostic and prognostic marker. Prostate 71: 1–7, 2011. © 2010 Wiley‐Liss, Inc." @default.
- W2059527292 created "2016-06-24" @default.
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- W2059527292 date "2010-11-23" @default.
- W2059527292 modified "2023-10-10" @default.
- W2059527292 title "In silico analysis and DHPLC screening strategy identifies novel apoptotic gene targets of aberrant promoter hypermethylation in prostate cancer" @default.
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- W2059527292 doi "https://doi.org/10.1002/pros.21212" @default.
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