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通过ZFP352对逆转移子的选择性结合,有助于及时溶解全能网络
Zhengyi Li1,2, Haiyan Xu1,2, Jiaqun Li2,3
1Division of Human Reproduction and Developmental Genetics, Women's Hospital, and Institute of Genetics, Zhejiang University School of Medicine, Hangzhou, 310006, China.
Nature communications
|June 20, 2023
概括
转录因子ZFP352有助于在早期小鼠胚胎中溶解全能性调节网络. 通过转移逆转移素结合,ZFP352促进了细胞命运转变,这对发育至关重要.
科学领域:
- 发展生物学 发展生物学
- 干细胞生物学 干细胞生物学
- 基因组学就是基因组学.
背景情况:
- 细胞命运过渡需要拆除现有的调节网络.
- 围绕着胚胎基因组激活 (ZGA) 的全能性调节网络得到了很好的研究.
- 在ZGA后触发全能网络溶解的机制尚不清楚.
研究的目的:
- 研究二细胞 (2C) 胚胎特异转录因子ZFP352.2.的作用.
- 阐明ZFP352如何促进全能网络的溶解.
- 了解逆转移子在细胞命运转换中的作用.
主要方法:
- 确定ZFP352作为一个关键的调节器.
- 分析了ZFP352与不同逆转移素子家族 (MT2_Mm,SINE_B1/Alu) 的结合亲和力.
- 研究了ZFP352与DUX的相互作用.
- 评估了ZFP352枯竭对小鼠胚胎发育的影响.
主要成果:
- ZFP352表现出对逆转移素子家族的选择性结合.
- ZFP352将MT2_Mm与DUX结合在一起,而SINE_B1/Alu没有DUX.
- 这种结合转移激活了下游的途径,如ubiquitination,溶解2C状态.
- 在小鼠胚胎中,ZFP352的枯竭延迟了2C转移到菌的过程.
结论:
- ZFP352通过逆转移素结合的转移触发了全能网络的溶解.
- 逆转移素子家族在编程的细胞命运过渡中发挥着关键作用.
- 这种机制确保了ZGA之后的及时胚胎发育.
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