腹前脑原始体的单细胞转录组学确定了通过直接RNA结合和RNP招募域的Evf2增强器lncRNA增强器基因指导
Edward Li1, Abhijit Chakraborty2, Sara J Kohtz3
1Department of Neurology, Northwestern University, Feinberg School of Medicine, Chicago, IL, USA.
Nature communications
|July 27, 2025
概括
Evf2 lncRNA指导小鼠大脑发育中的增强剂-基因相互作用,调节6号染色体的基因激活和抑制. 这揭示了对基因调节的新见解,以及与发作疾病的潜在联系.
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.
- 基因组学就是基因组学.
背景情况:
- 在胚胎大脑发育过程中,Evf2超保守增强器 (UCE) lncRNA引导DLx5/6UCE到小鼠染色体6上的多个部位.
- 之前的研究表明Evf2-Dlx5/6UCE基因相互作用的转录标有限,质疑这一指导的功能意义.
研究的目的:
- 通过单细胞转录组学来研究Evf2介导的Dlx5/6UCE基因指导和转录调节之间的对齐程度.
- 为了确定特定的基因调节模式和Evf2在发育中的大脑中驱动的潜在疾病关联.
主要方法:
- 单细胞转录组学用于分析基因表达和增强剂-基因相互作用.
- 染色体构造捕获 (HiC) 来绘制远程基因组相互作用.
- 对Evf2-核糖蛋白 (RNP) 的结合部位和转录因子基因的分析.
主要成果:
- Evf2引导chr6基因进入短距离激活和长距离抑制的域,识别与有关的基因.
- 从转录结果中解脱Evf2-调节的增强剂-基因距离/方向.
- Evf2在调节部位进行组合RNP结合,包括直接结合RNA的部位 (RBS) 和HiC循环.
- RBSs定义了具有丰富RNP招募,转录因子动机和循环相互作用的大型染色体域.
结论:
- Evf2在增强剂基因指导和转录调节中发挥着直接作用.
- Evf2调解了特定于位点和染色体域的特定RNP招募.
- 胚胎腹腔下区域的Evf2调节的基因网络可以预测成人表型,包括发作易感性.
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