Abstract
To investigate the association between the polymorphism of miR-146a and The ubiquitin-like with PHD and ring-finger domains 1 (UHRF1) expression in patients with gastric cancer. MiR-146a rs2910164 was genotyped in 130 patients with gastric cancer and 130 cancer-free individuals using polymerase chain reaction (PCR)-restriction fragment length polymorphism. UHRF1 expression was analyzed in 22 gastric cancer tissues and their adjacent normal tissues using quantitative real-time PCR. No significant differences in genotype distributions of miR-146a rs2910164 were found between cases and controls, but we observed that grade II tumors were more frequently detected in patients with CG/CC genotype compared to those with CC genotype. UHRF1 expressions in cancerous tissues were significantly higher than in noncancerous tissues (1.89-fold). Patients with CC genotype showed a significant increase in UHRF1 expression in comparison to the carriers of GG/CG genotype. A higher UHRF1 expression was associated with cancer stage IV and grade III (P<0.05). The overexpression of UHRF1 was correlated with the stage and grade of gastric cancer and is associated with the genotype distribution of rs2910164.
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