miR-34a在辐射损伤效应中的作用

Journal of Radiation Research and Radiation Processing(2013)

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Abstract
miR-34a位于染色体1p36.23区,作用于多种靶基因。miR-34a的异常表达可诱发细胞凋亡、周期阻滞和细胞分化,也可降低肿瘤细胞的转移,被认为是一种肿瘤抑制因子。抑癌基因p53可以激活miR-34a,miR-34a也可反馈调节p53表达。电离辐射诱导的miR-34a异常表达在DNA损伤修复、细胞凋亡、细胞周期调节和细胞辐射敏感性中发挥重要作用。本文综述电离辐射诱导miR-34a的产生及其参与的生物学反应和调控机制。
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Key words
Ionizing radiation,Cell cycle regulation,miR-34a,Cell apoptosis
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