Hypermethylation of CDH13, DKK3 and FOXL2 promoters and the expression of EZH2 in ovary granulosa cell tumors

  • Authors:
    • Yanmei Xu
    • Xia Li
    • Hongtao Wang
    • Pengmu Xie
    • Xun Yan
    • Yu Bai
    • Tingguo Zhang
  • View Affiliations

  • Published online on: July 18, 2016     https://doi.org/10.3892/mmr.2016.5521
  • Pages: 2739-2745
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Abstract

Aberrant epigenetic modification is associated with the development and progression of cancer. Hypermethylation of tumor suppressor gene promoters and cooperative histone modification have been considered to be the primary mechanisms of epigenetic modification. Ovary granulosa cell tumors (GCTs) are relatively rare, accounting for ~3% of all ovarian malignancies. The present study assessed hypermethylation of the cadherin 13 (CDH13), dickkopf WNT signaling pathway inhibitor 3 (DKK3) and forkhead box L2 (FOXL2) promoters in 30 GCT tissues and 30 healthy control tissues using methylation-specific polymerase chain reaction analysis. The data showed that the frequencies of CDH13, DKK3 and FOXL2 promoter methylation were significantly higher in the GCT tissues, compared with the healthy control tissues (86.67, vs. 23.33%; 80, vs. 26.67% and 66.67, vs. 20%, respectively; P<0.001). Immunostaining of enhancer of zeste homolog 2 (EZH2), a histone H3K27 methyltransferase, showed that the EZH2 protein was expressed in 11 of the 30 GCT tissue samples, whereas no EZH2 protein was expressed in the 30 healthy control tissues (P<0.01). These data suggested that hypermethylation of the CDH13, DKK3 and FOXL2 gene promoters, and overexpression of the EZH2 protein were involved in the development of GCT.
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September-2016
Volume 14 Issue 3

Print ISSN: 1791-2997
Online ISSN:1791-3004

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Spandidos Publications style
Xu Y, Li X, Wang H, Xie P, Yan X, Bai Y and Zhang T: Hypermethylation of CDH13, DKK3 and FOXL2 promoters and the expression of EZH2 in ovary granulosa cell tumors. Mol Med Rep 14: 2739-2745, 2016
APA
Xu, Y., Li, X., Wang, H., Xie, P., Yan, X., Bai, Y., & Zhang, T. (2016). Hypermethylation of CDH13, DKK3 and FOXL2 promoters and the expression of EZH2 in ovary granulosa cell tumors. Molecular Medicine Reports, 14, 2739-2745. https://doi.org/10.3892/mmr.2016.5521
MLA
Xu, Y., Li, X., Wang, H., Xie, P., Yan, X., Bai, Y., Zhang, T."Hypermethylation of CDH13, DKK3 and FOXL2 promoters and the expression of EZH2 in ovary granulosa cell tumors". Molecular Medicine Reports 14.3 (2016): 2739-2745.
Chicago
Xu, Y., Li, X., Wang, H., Xie, P., Yan, X., Bai, Y., Zhang, T."Hypermethylation of CDH13, DKK3 and FOXL2 promoters and the expression of EZH2 in ovary granulosa cell tumors". Molecular Medicine Reports 14, no. 3 (2016): 2739-2745. https://doi.org/10.3892/mmr.2016.5521