Biopolym. Cell. 2013; 29(5):395-401.
Genomics, Transcriptomics and Proteomics
Genetic and epigenetic changes of GPX1 and GPX3 in human clear-cell renal cell carcinoma
1Rudenko E. E., 1Gerashchenko G. V., 1Lapska Y. V., 1Bogatyrova O. O., 2Vozianov S. O., 2Zgonnyk Y. M., 1Kashuba V. I.
  1. Institute of Molecular Biology and Genetics, NAS of Ukraine
    150, Akademika Zabolotnoho Str., Kyiv, Ukraine, 03680
  2. State Institution «Institute of Urology of NAMS of Ukraine»
    9-a, Yu. Kotsubyns'koho Str., Kyiv, Ukraine, 04053


Aim. To find putative diagnostic and prognostic markers of cancerogenesis. Methods. Analysis of microarray and SAGE data, quantitative PCR (Q-PCR), bisulfite sequencing, methylation-specific PCR. Results. Bioinformatic analysis of microarray and SAGE database revealed that genes, encoding the glutathione peroxidase 1 and 3 (GPX1 and GPX3) were expressed at low levels in renal cancers. The relative gene expression of GPX1 and GPX3 that was widely inactivated in clear-cell renal cell carcinoma (ccRCC) was confirmed by Q-PCR. No correlation between expression levels and promoter methylation was found. It was found, however, that an allele with five ALA repeats in the N-terminal region of GPX1 is the most frequent polymorphic variant in ccRCC patients. Conclusions. Our data support the hypothesis that GPX1 and GPX3 are involved in tumorigenesis of ccRCC and could be putative TSGs (tumor suppressor genes) in renal cancer.
Keywords: renal cell carcinoma, genetic and epigenetic regulation, chromosome 3, quantitative real time PCR, methylation status


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