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Öğe Alterations in Promoter Methylation Status of Tumor Suppressor HIC1, SFRP2, and DAPK1 Genes in Prostate Carcinomas(Mary Ann Liebert, Inc, 2012) Kilinc, Devran; Ozdemir, Oztuerk; Ozdemir, Semra; Korgali, Esat; Koksal, Binnur; Uslu, Atilla; Gultekin, Yener E.Hypermethylated genomic DNA is a common feature in tumoral tissues, although the prevalence of this modification remains poorly understood. We aimed to determine the frequency of five tumor suppressor (TS) genes in prostate cancer and the correlation between promoter hypermethylation of these genes and low and high grade of prostate carcinomas. A total of 30 prostate tumor specimens were investigated for promoter methylation status of TS hypermethylated in cancer 1 (HIC1), death-associated protein kinase 1 (DAPK1), secreted frizzled-related protein 2 (SFRP2), cyclin-dependent kinase inhibitor 2A (p16), and O-6-methylguanine-DNA methyltransferase (MGMT) genes by using bisulfite modifying method. A high frequency of promoter hypermethylation was found in HIC1 (70.9%), SFRP2 (58.3%), and DAPK1 (33.3%) genes in tumor samples that were examined. The current data show high frequency of hypermethylation changes in HIC1, SFRP2, and DAPK1 genes in prostate carcinomas of high Gleason Score (GS).Öğe Epigenetic silencing of the tumor suppressor HIC1 and SFRP2 genes in prostate carcinomas(Springer, 2011) Kilic, Davran; Ozdemir, Oziurk; Korgali, Esat; Ozdemir, Semra; Koksal, Binnur; Gultekin, Yener[Anstract Not Available]
