识别H2AK119ub在RSF1调节的早期Xenopus发育中发挥着重要作用
Saeid Mohammad Parast1, Deli Yu1, Chunxu Chen2,3,4
1Department of Cell, Developmental and Integrative Biology, University of Alabama at Birmingham, Birmingham, AL, United States.
Frontiers in cell and developmental biology
|August 2, 2023
概括
重塑和间隔因子1 (RSF1) 对于Xenopus的早期胚胎发育至关重要,尤其是神经发育. 它的功能依赖于识别H2AK119ub基因素标记,将其与多抑制综合体1路径联系起来.
科学领域:
- 发展生物学 发展生物学
- 表观遗传学 在表观遗传学中,表观遗传学是指表观遗传学.
- 分子生物学分子生物学
背景情况:
- 多组 (PcG) 蛋白通过基因组修饰来调节基因表达和发育.
- 解释这些标记的因素,如重塑和间隔因素1 (RSF1),在胚胎发生过程中不太了解.
- 此前,RSF1已被确定为素H2A lysine 119 ubiquitination (H2AK119ub) 的读者,这是Polycomb Repressive Complex 1 (PRC1) 的标记.
研究的目的:
- 研究RSF1在Xenopus早期发育中的作用.
- 确定H2AK119ub识别是否对RSF1功能至关重要.
- 阐明RSF1,H2AK119ub和PRC1在胚胎发生过程中的联系.
主要方法:
- 在胚胎中的Xenopus RSF1 (rsf1) 的敲除.
- 在潜在的神经前体中有针对性的敲击.
- 没有UAB域的RSF1构造的表达.
- 使用环1a-smad2融合蛋白进行异卵巢H2AK119ub沉积.
主要成果:
- RSF1的敲击导致胃流动,神经和神经缺陷,影响基因表达.
- 在rsf1 knockdown胚胎中,前后神经模式被破坏,反映了PRC1组件的敲击.
- 对于H2AK119ub结合至关重要的RSF1的UAB域,对于拯救rsf1形态表型和影响发育至关重要.
- 宫内H2AK119ub招募了RSF1,但融合蛋白显示出有限的发育效应.
结论:
- 在早期的Xenopus胚胎中,RSF1调节发育过程,类似于PRC1组件.
- RSF1至少部分通过通过其UAB域与H2AK119ub标志结合而起作用.
- 这项研究强调了RSF1对H2AK119ub的识别在胚胎发育中的重要性.
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