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Article

Promoter hypermethylation of the tumor-suppressor genes RASSF1A, GSTP1 and CDH1 in endometrial cancer

  • Authors:
    • Roman Fiolka
    • Pavol Zubor
    • Veronika Janusicova
    • Jozef Visnovsky
    • Andrea Mendelova
    • Karol Kajo
    • Zora Lasabova
    • Lukas Plank
    • Jan Danko
  • View Affiliations / Copyright

    Affiliations: Department of Obstetrics and Gynecology, Jessenius Faculty of Medicine, Comenius University in Bratislava, 036 01 Martin, Slovak Republic, Department of Pathology, Jessenius Faculty of Medicine, Comenius University in Bratislava, 036 01 Martin, Slovak Republic, Department of Molecular Biology, Jessenius Faculty of Medicine, Comenius University in Bratislava, 036 01 Martin, Slovak Republic
  • Pages: 2878-2886
    |
    Published online on: September 25, 2013
       https://doi.org/10.3892/or.2013.2752
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Abstract

Endometrial cancer is a common gynecological malignancy with a good prognosis in early stages of the disease. The CpG island in the promoter region of tumor-suppressor genes are frequently methylated in various types of human cancers. In the present study, we examined the methylation status of the GSTP1, CDH1 and RASSF1A genes in endometrioid endometrial cancer (EEC), endometrial complex hyperplasia (EHP) and healthy endometrium with the aim to identify correlations between promoter hypermethylation, disease risk and clinicopathological parameters. A nested two-stage methylation-specific PCR (MSP) was performed to analyze the promoter CpG methylation status of GSTP1, CDH1 and RASSF1A genes in the population studied. A total of 92 subjects were initially included in the study of which 41 EEC, 19 EHP and 20 controls were processed for final analyses. A significant difference was found between the study groups and the presence of promoter CpG hypermethylation status in the GSTP1 (p<0.05) and RASSF1A (p<0.0001) genes. RASSF1A, GSTP1 and CDH1 gene promoter methylation was present in 85.4, 68.3 and 31.4% of EEC samples when compared to that in the controls with 30.0, 35.0 and 20.0%, respectively. CpG methylation of all three investigated tumor-suppressor genes was found in 12.2% of EEC patients, in 4.2% of EHP patients and in 3.7% of the controls, respectively. Positive findings for the promoter methylation of two investigated genes were found in 48.7% of EEC patients, 26.0% of EHP patients and in 18.5% of the controls. With regard to histopathological variables and CpG methylation, we found significant correlations between the RASSF1A and GSTP1 genes and higher tumor grade, deeper myometrial invasion and positive metastatic involvement of pelvic lymph nodes. No associations were noted between promoter hypermethylation of the CDH1 gene and biological features of the endometrial cancer cases. The results indicate that aberrant CpG methylation of the promoter region in the GSTP1 and RASSF1A tumor-suppressor genes is an important event in carcinogenesis of endometrial cancer and may have an impact on tumor aggressiveness. Finally, the present study suggests that epigenetic alterations may be of diagnostic value for the better clinical management of premalignant endometrial lesions.
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Copy and paste a formatted citation
Spandidos Publications style
Fiolka R, Zubor P, Janusicova V, Visnovsky J, Mendelova A, Kajo K, Lasabova Z, Plank L and Danko J: Promoter hypermethylation of the tumor-suppressor genes RASSF1A, GSTP1 and CDH1 in endometrial cancer. Oncol Rep 30: 2878-2886, 2013.
APA
Fiolka, R., Zubor, P., Janusicova, V., Visnovsky, J., Mendelova, A., Kajo, K. ... Danko, J. (2013). Promoter hypermethylation of the tumor-suppressor genes RASSF1A, GSTP1 and CDH1 in endometrial cancer. Oncology Reports, 30, 2878-2886. https://doi.org/10.3892/or.2013.2752
MLA
Fiolka, R., Zubor, P., Janusicova, V., Visnovsky, J., Mendelova, A., Kajo, K., Lasabova, Z., Plank, L., Danko, J."Promoter hypermethylation of the tumor-suppressor genes RASSF1A, GSTP1 and CDH1 in endometrial cancer". Oncology Reports 30.6 (2013): 2878-2886.
Chicago
Fiolka, R., Zubor, P., Janusicova, V., Visnovsky, J., Mendelova, A., Kajo, K., Lasabova, Z., Plank, L., Danko, J."Promoter hypermethylation of the tumor-suppressor genes RASSF1A, GSTP1 and CDH1 in endometrial cancer". Oncology Reports 30, no. 6 (2013): 2878-2886. https://doi.org/10.3892/or.2013.2752
Copy and paste a formatted citation
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Spandidos Publications style
Fiolka R, Zubor P, Janusicova V, Visnovsky J, Mendelova A, Kajo K, Lasabova Z, Plank L and Danko J: Promoter hypermethylation of the tumor-suppressor genes RASSF1A, GSTP1 and CDH1 in endometrial cancer. Oncol Rep 30: 2878-2886, 2013.
APA
Fiolka, R., Zubor, P., Janusicova, V., Visnovsky, J., Mendelova, A., Kajo, K. ... Danko, J. (2013). Promoter hypermethylation of the tumor-suppressor genes RASSF1A, GSTP1 and CDH1 in endometrial cancer. Oncology Reports, 30, 2878-2886. https://doi.org/10.3892/or.2013.2752
MLA
Fiolka, R., Zubor, P., Janusicova, V., Visnovsky, J., Mendelova, A., Kajo, K., Lasabova, Z., Plank, L., Danko, J."Promoter hypermethylation of the tumor-suppressor genes RASSF1A, GSTP1 and CDH1 in endometrial cancer". Oncology Reports 30.6 (2013): 2878-2886.
Chicago
Fiolka, R., Zubor, P., Janusicova, V., Visnovsky, J., Mendelova, A., Kajo, K., Lasabova, Z., Plank, L., Danko, J."Promoter hypermethylation of the tumor-suppressor genes RASSF1A, GSTP1 and CDH1 in endometrial cancer". Oncology Reports 30, no. 6 (2013): 2878-2886. https://doi.org/10.3892/or.2013.2752
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