体细胞核移植诱导的表观遗传学变化

被引：9

作者：

杨东山

邓为

樊娜娜

赖良学

机构：

[1] 中国科学院广州生物医药与健康研究院中国科学院再生生物学重点实验室

来源：

生命科学 | 2009年 / 21卷 / 03期

关键词：

体细胞核移植; 重编程; 表观遗传学; 甲基化;

D O I：

暂无

中图分类号：

Q813 [细胞工程];

学科分类号：

100113 [医学细胞生物学];

摘要：

体细胞核移植技术是指将一个分化的体细胞核置入去核的卵母细胞中,并发育产生与供体细胞遗传背景一致的克隆后代的技术。目前,世界上通过体细胞核移植技术已经产生了许多的克隆动物。但克隆过程中还存在着很多问题,比如,克隆效率太低、克隆个体常伴有表型异常和早亡等,从而使该技术应有的应用潜力不能得到充分的发挥。体细胞表观遗传学重编程的不完全或紊乱是造成核移植诸多问题的主要原因。近十多年来,人们对体细胞核移植后的重编程进行了广泛的研究,其核心内容包括核及核外结构的重塑、DNA甲基化模式的重建、基因印迹和X染色体失活、组蛋白乙酰化模式的重建、端粒长度恢复等,以期能够对其重编程加以人为干预,从而提高动物克隆效率。本文拟对体细胞核移植诱导的重编程研究进展加以综述,希望对体细胞重编程机制的阐明有所启发。

引用

页码：363 / 369

页数：7

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