Zscan4 restores the developmental potency of embryonic stem cells.

Zscan4 restores the developmental potency of embryonic stem cells.
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DOI:
10.1038/ncomms2966
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发表时间:
2013
影响因子:
16.6
通讯作者:
--
中科院分区:
综合性期刊1区
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--
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小鼠胚胎干细胞(ES)的发育潜能,即形成完整胚胎的能力,在长期细胞培养过程中会退化。以前,我们已经表明,ES细胞之间振荡Zscan 4-和Zscan 4+状态,和Zscan 4的瞬时激活是必需的端粒和基因组的稳定性的ES细胞的维护。在这里,我们表明,增加小鼠ES细胞中Zscan 4激活的频率可以恢复并保持其在长期细胞培养中的发育潜能。将具有这种增加的效力的单个ES细胞注射到四倍体胚泡中会产生具有更高成功率的完整胚胎。这些结果不仅提供了一种通过操纵Zscan 4表达来使ES细胞再生的方法,而且还表明了Zscan 4在长期维持ES细胞潜能中的积极作用。
The developmental potency of mouse embryonic stem (ES) cells, which is the ability to contribute to a whole embryo is known to deteriorate during long-term cell culture. Previously we have shown that ES cells oscillate between Zscan4- and Zscan4+ states, and the transient activation of Zscan4 is required for the maintenance of telomeres and genome stability of ES cells. Here we show that increasing the frequency of Zscan4 activation in mouse ES cells restores and maintains their developmental potency in long-term cell culture. Injection of a single ES cell with such increased potency into a tetraploid blastocyst gives rise to an entire embryo with a higher success rate. These results not only provide a means to rejuvenate ES cells by manipulating Zscan4 expression, but also indicate the active roles of Zscan4 in the long-term maintenance of ES cell potency.
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