Background: The current study was designed to explore the changes of the mRNA levels of the YT521, Forkhead box protein O1 (FOXO1), and Krüppel-like factor 9 (KLF9) proteins in human normal and cancerous endometrial tissue.
Methods: The study was conducted in 30 premenopausal patients diagnosed with endometrial cancer and 20 premenopausal women with no clinically documented abnormalities of the endometrium undergoing hysterectomy. Gene expression levels were assayed using quantitative real-time PCR.
Results: The endometrial tissue FOXO1 mRNA level (0.82 +/- 0.27) of patients with endometrial cancer was significantly lower (p < 0.001) than controls (4.51 +/- 2.68). In subjects with endometrial cancer the KLF9 mRNA level (1.12 +/- 0.38) was lower (p < 0.001) when compared to controls (3.11 +/- 1.52). A remarkable (not significant, p = 0.069) increase was found in the YT521 mRNA level of patients' endometrial tissue (11.19 +/- 3.99) in comparison with the control subjects (8.82 +/- 5.01). No significant difference was detected for the FOXO1, KLF9 and YT521 mRNA levels of the endometrial tissue of patients with cancer at different stages.
Conclusions: It is suggested that the alteration of the gene expression profiles of FOXO1, KLF9 and YT521, which occur in human endometrial cancers likely play a crucial role in initiation of cancer.
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