表现遗传修饰microRNA促进肝癌进展和转移的相关研究

来源 :2014非编码RNA和表观遗传学研究经验交流会 | 被引量 : 0次 | 上传用户:luckmax1985
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  肝细胞性肝癌(HCC)是肝脏最常见的恶性肿瘤,占世界范围内癌症相关死亡的第三位。由于利用现有的肝癌诊断方法大多数肝癌患者被确诊时已为晚期,导致其5年生存率低至10%-15%,所以对癌症发生的早期预测和早期检测对于选择有效的治疗方法来说至关重要。我们研究首次发现循环miR-429和miR193a-3p可以作为监测HBsAg-阳性病人发生HCC风险的指标。肝肿瘤起始细胞(T-ICs)来源的miR-429能够在体内和体外水平通过直接靶向抑癌基因RBBP4促进肝T-ICs的自我更新、增殖和化疗抵抗。同时在1p36区域miR200b/200a/429小RNA簇上游CpG岛低甲基化异常修饰是导致肝T-ICs中miR-429高表达的原因。研究结果提示miR-429是预测HCC发生新的监测指标和治疗靶点。
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