Discovery of Novel Hypermethylated Genes in Prostate Cancer Using Genomic CpG Island Microarrays Journal Articles uri icon

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  • BACKGROUND: Promoter and 5' end methylation regulation of tumour suppressor genes is a common feature of many cancers. Such occurrences often lead to the silencing of these key genes and thus they may contribute to the development of cancer, including prostate cancer. METHODOLOGY/PRINCIPAL FINDINGS: In order to identify methylation changes in prostate cancer, we performed a genome-wide analysis of DNA methylation using Agilent human CpG island arrays. Using computational and gene-specific validation approaches we have identified a large number of potential epigenetic biomarkers of prostate cancer. Further validation of candidate genes on a separate cohort of low and high grade prostate cancers by quantitative MethyLight analysis has allowed us to confirm DNA hypermethylation of HOXD3 and BMP7, two genes that may play a role in the development of high grade tumours. We also show that promoter hypermethylation is responsible for downregulated expression of these genes in the DU-145 PCa cell line. CONCLUSIONS/SIGNIFICANCE: This study identifies novel epigenetic biomarkers of prostate cancer and prostate cancer progression, and provides a global assessment of DNA methylation in prostate cancer.


  • Kron, Ken
  • Pethe, Vaijayanti
  • Briollais, Laurent
  • Sadikovic, Bekim
  • Ozcelik, Hilmi
  • Sunderji, Alia
  • Venkateswaran, Vasundara
  • Pinthus, Jehonathan
  • Fleshner, Neil
  • van der Kwast, Theodorus
  • Bapat, Bharati

publication date

  • 2009

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