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.
journal_name
Mol Med Repjournal_title
Molecular medicine reportsauthors
Xu Y,Li X,Wang H,Xie P,Yan X,Bai Y,Zhang Tdoi
10.3892/mmr.2016.5521subject
Has Abstractpub_date
2016-09-01 00:00:00pages
2739-45issue
3eissn
1791-2997issn
1791-3004journal_volume
14pub_type
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