Pioneering the developmental frontier.

Pioneering the developmental frontier.
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开拓发展前沿。

DOI:
10.1016/j.molcel.2021.02.020
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发表时间:
2021-04-15
期刊:
影响因子:
16
通讯作者:
Harrison MM
Harrison MM
中科院分区:
生物学1区
文献类型:
--
作者:
Larson ED;Marsh AJ;Harrison MM

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基因表达的协调变化允许单个受精卵发育成一个复杂的多细胞有机体。这些表达的变化是由转录因子控制的,这些转录因子可以进入基因组中离散的顺式调控元件,从而激活基因表达。虽然核小体存在转录因子占用的障碍,但先锋转录因子具有独特的特性,允许它们在核小体的背景下结合DNA,定义顺式调控元件,并促进随后结合决定基因表达的其他因子。在这种情况下,先锋因子在基因调控网络的顶端起作用,控制发育转变。尽管如此,发展环境也会影响先锋因子的结合和活动。在这里,我们讨论了先锋因子与发育之间的相互作用,它们在驱动发育转变中的作用以及细胞环境对先锋因子结合和活性的影响。
Coordinated changes in gene expression allow for the single fertilized oocyte to develop into a complex, multi-cellular organism. These changes in expression are controlled by transcription factors that gain access to discrete cis-regulatory elements in the genome, allowing them to activate gene expression. While nucleosomes present barriers to transcription-factor occupancy, pioneer transcription factors have unique properties that allow them to bind DNA in the context of nucleosomes, define cis-regulatory elements and facilitate the subsequent binding of additional factors that determine gene expression. In this capacity, pioneer factors act at the top of gene regulatory networks to control developmental transitions. Nonetheless, developmental context also influences pioneer-factor binding and activity. Here we discuss the interplay between pioneer factors and development, both their role in driving developmental transitions and the influence that cellular environment has on pioneer-factor binding and activity.
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