PloS one · 2014
Increased p16 DNA methylation in mouse thymic lymphoma induced by irradiation.
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Song Wengang, Liu Yongzhe, Liu Ying, Zhang Cong, Yuan Bao, Zhang Lianbo, Sun Shilong
Аннотация
DNA methylation is an important part of epigenetics. In this study, we examined the methylation state of two CpG islands in the promoter of the p16 gene in radiation-induced thymic lymphoma samples. The mRNA and protein levels of P16 were significantly reduced in radiation-induced thymic lymphoma tissue samples. Twenty-three CpG sites of the CpG islands in the p16 promoter region were detected, and the methylation percentages of -71, -63, -239, -29, -38, -40, -23, 46 CpG sites were significantly higher in radiation-induced thymic lymphoma tissue samples than those in matched non-irradiated thymus tissue samples. This study provides new evidence for the methylation state of p16 in the radiation-induced thymic lymphoma samples, which suggests that the methylation of these CpG sites in the p16 promoter may reduce its expression in the thymic lymphoma after irradiation.