Zygotic genome activation during the maternal-to-zygotic transition.

Zygotic genome activation during the maternal-to-zygotic transition.
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DOI:
10.1146/annurev-cellbio-100913-013027
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发表时间:
2014
影响因子:
11.3
通讯作者:
Giraldez AJ
Giraldez AJ
中科院分区:
生物学1区
文献类型:
--
作者:
Lee MT;Bonneau AR;Giraldez AJ

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胚胎发生依赖于一系列高度协调的遗传编码事件。在动物中,由卵细胞质贡献的母体因素最初控制发育,而合子核基因组是静止的。随后,基因组被激活,胚胎基因产物被动员,母体因子被清除。这种发育控制的转移被称为母合子过渡(MZT)。在这篇综述中,我们讨论了最近的进展,了解的范围,时间和机制的基础合子基因组激活在MZT的动物。我们描述了高通量技术来测量胚胎转录组,并探讨如何调节细胞周期,染色质和转录因子一起elaborated胚胎基因表达的特定模式。最后,我们讨论了合子转录和母体清除之间的相互作用,并展示了这两种活动如何联合收割机重新编程两个终末分化的配子成为一个全能胚胎。
Embryogenesis depends on a highly coordinated cascade of genetically encoded events. In animals, maternal factors contributed by the egg cytoplasm initially control development, while the zygotic nuclear genome is quiescent. Subsequently, the genome is activated, embryonic gene products are mobilized and maternal factors are cleared. This transfer of developmental control is called the maternal-to-zygotic transition (MZT). In this review, we discuss recent advances toward understanding the scope, timing and mechanisms that underlie zygotic genome activation at the MZT in animals. We describe high-throughput techniques to measure the embryonic transcriptome and explore how regulation of the cell cycle, chromatin and transcription factors together elicits specific patterns of embryonic gene expression. Finally, we discuss the interplay between zygotic transcription and maternal clearance, and show how these two activities combine to reprogram two terminally differentiated gametes into a totipotent embryo.
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