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Article

Abnormal methylation status of FBXW10 and SMPD3, and associations with clinical characteristics in clear cell renal cell carcinoma

  • Authors:
    • Jinyou Wang
    • Jian Li
    • Jun Gu
    • Jian Yu
    • Shicheng Guo
    • Yao Zhu
    • Dingwei Ye
  • View Affiliations / Copyright

    Affiliations: Department of Oncology, Shanghai Medical College, Fudan University, Shanghai 200032, P.R. China, State Key Laboratory of Genetic Engineering and Ministry of Education Key Laboratory of Contemporary Anthropology, School of Life Sciences, Fudan University, Shanghai 200433, P.R. China, State Key Laboratory of Oncogenes and Related Genes, Shanghai Cancer Institute, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200240, P.R. China
  • Pages: 3073-3080
    |
    Published online on: September 16, 2015
       https://doi.org/10.3892/ol.2015.3707
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Abstract

The present study aimed to evaluate the use of the 27K methylation array to investigate abnormal methylation of two genes and their associations with clinical characteristics in clear cell renal cell carcinoma (ccRCC). Six differentially‑methylated genes identified using the 27K methylation array were screened in the human RCC 786‑0 cell line and normal kidney tissues by bisulfite sequencing polymerase chain reaction (PCR). Differentially‑methylated regions (DMRs) that were abnormally hypermethylated in the cell line were further validated in renal tumor and paired normal tissues by pyrosequencing. The correlations between DMRs and differences (methylation rate of tumor minus that of paired normal tissue) according to gender, age, tumor size, Fuhrman grade and disease stage were assessed. Gene expression prior to and following 5‑Aza‑2'‑deoxycytidine treatment was examined using reverse transcription quantitative PCR (RT-qPCR). Two DMRs located in the FBXW10 and SMPD3 genes were found to be hypermethylated in the 786‑0 cells, but not in the normal kidney tissues. Pyrosequencing results showed that the average methylation rate of FBXW10 in the cancer tissues was significantly higher compared to that in the paired normal tissues (48.78 vs. 34.62%; P<0.001). The methylation rate of SMPD3 was also higher in the cancer tissues compared with the paired normal tissues (58.98 vs. 38.66%; P<0.001). In stage T1 RCC, the methylation rate of the tumor tissue was positively correlated with the Fuhrman grade (P=0.02). The difference in methylation between the tumor and normal tissues was significantly higher in the group with high Fuhrman grade for the two genes. Furthermore, the linear correlation between methylation difference and tumor size was also confirmed (P=0.01). The RT‑qPCR analysis demonstrated that SMPD3 and FBXW10 mRNA expression was significantly upregulated following 5‑Aza‑2'‑deoxycytidine treatment. The results identified two novel DMRs located in SMPD3 and FBXW10 that were hypermethylated in the ccRCC tissue samples. The methylation profile in ccRCC could potentially provide predictive information for clinical decisions.
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Copy and paste a formatted citation
Spandidos Publications style
Wang J, Li J, Gu J, Yu J, Guo S, Zhu Y and Ye D: Abnormal methylation status of FBXW10 and SMPD3, and associations with clinical characteristics in clear cell renal cell carcinoma. Oncol Lett 10: 3073-3080, 2015.
APA
Wang, J., Li, J., Gu, J., Yu, J., Guo, S., Zhu, Y., & Ye, D. (2015). Abnormal methylation status of FBXW10 and SMPD3, and associations with clinical characteristics in clear cell renal cell carcinoma. Oncology Letters, 10, 3073-3080. https://doi.org/10.3892/ol.2015.3707
MLA
Wang, J., Li, J., Gu, J., Yu, J., Guo, S., Zhu, Y., Ye, D."Abnormal methylation status of FBXW10 and SMPD3, and associations with clinical characteristics in clear cell renal cell carcinoma". Oncology Letters 10.5 (2015): 3073-3080.
Chicago
Wang, J., Li, J., Gu, J., Yu, J., Guo, S., Zhu, Y., Ye, D."Abnormal methylation status of FBXW10 and SMPD3, and associations with clinical characteristics in clear cell renal cell carcinoma". Oncology Letters 10, no. 5 (2015): 3073-3080. https://doi.org/10.3892/ol.2015.3707
Copy and paste a formatted citation
x
Spandidos Publications style
Wang J, Li J, Gu J, Yu J, Guo S, Zhu Y and Ye D: Abnormal methylation status of FBXW10 and SMPD3, and associations with clinical characteristics in clear cell renal cell carcinoma. Oncol Lett 10: 3073-3080, 2015.
APA
Wang, J., Li, J., Gu, J., Yu, J., Guo, S., Zhu, Y., & Ye, D. (2015). Abnormal methylation status of FBXW10 and SMPD3, and associations with clinical characteristics in clear cell renal cell carcinoma. Oncology Letters, 10, 3073-3080. https://doi.org/10.3892/ol.2015.3707
MLA
Wang, J., Li, J., Gu, J., Yu, J., Guo, S., Zhu, Y., Ye, D."Abnormal methylation status of FBXW10 and SMPD3, and associations with clinical characteristics in clear cell renal cell carcinoma". Oncology Letters 10.5 (2015): 3073-3080.
Chicago
Wang, J., Li, J., Gu, J., Yu, J., Guo, S., Zhu, Y., Ye, D."Abnormal methylation status of FBXW10 and SMPD3, and associations with clinical characteristics in clear cell renal cell carcinoma". Oncology Letters 10, no. 5 (2015): 3073-3080. https://doi.org/10.3892/ol.2015.3707
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