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Epigenetic reprogramming in mammalian nuclear transfer

机译:哺乳动物核移植中的表观遗传重编程

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摘要

Somatic cloning has been succeeded in some species, but the cloning efficiency is very low, which limits the application of the technique in many areas of research and biotechnology. The cloning of mammals by somatic cell nuclear transfer (NT) requires epigenetic reprogramming of the differentiated state of donor cell to a totipotent, embryonic ground state. Accumulating evidence indicates that incomplete or inappropriate epigenetic reprogramming of donor nuclei is likely to be the primary cause of failures in nuclear transfer. This review summarizes the roles of various epigenetic mechanisms, including DNA methylation, histone acetylation, imprinting, X-chromosome inactivation, telomere maintenance and expressions of development-related genes on somatic nuclear transfer.
机译:体细胞克隆已在某些物种中获得成功,但克隆效率非常低,这限制了该技术在许多研究和生物技术领域中的应用。通过体细胞核移植(NT)克隆哺乳动物需要将供体细胞的分化状态表观遗传重编程为全能的胚胎基态。越来越多的证据表明,供体核的不完整或不适当的表观遗传重编程很可能是核移植失败的主要原因。这篇综述总结了各种表观遗传机制的作用,包括DNA甲基化,组蛋白乙酰化,印迹,X染色体失活,端粒维持以及与发育相关的基因在体细胞核转移中的表达。

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