microRNA(miRNA)表达异常和表观遗传调控紊乱是恶性肿瘤形成的重要原因。表观遗传可以通过DNA甲基化和组蛋白乙酰化调控等方式导致miRNA基因的表达水平发生改变,从而通过激活相关的癌基因或抑制抑癌基因诱导体内恶性肿瘤的产生。
Abnormal expression of microRNA (miRNA) and aberration epigenetic regulation can both contribute to cancer development, miRNA expression can be changed by epigenetic regulation such as DNA methylation and histone acetylation, thereby regulates relative oncogenes and tumorsuppressor genes, and consequently leads to carcinogenesis.