C2H2-指转录因子与RNA结合,并在各种转录后调节过程中起作用
Syed Nabeel-Shah1, Shuye Pu2, James D Burns1
1Donnelly Centre, University of Toronto, Toronto, ON M5S 3E1, Canada; Department of Molecular Genetics, University of Toronto, Toronto, ON M5S 1A8, Canada.
Molecular cell
|September 20, 2024
概括
大多数Cys2-His2指蛋白 (C2H2-ZNFs) 结合RNA,而不仅仅是DNA. 这些蛋白质调节关键的RNA过程,如拼接和mRNA修饰,扩大它们已知的功能.
科学领域:
- 分子生物学分子生物学
- 遗传学 遗传学是一种遗传学.
- 表观遗传学 在表观遗传学中,表观遗传学是指表观遗传学.
背景情况:
- Cys2-His2指蛋白 (C2H2-ZNFs) 是最大的一类DNA结合转录因子.
- 它们在DNA结合之外的作用,特别是在RNA调节中,基本上是未知的.
- 以前的研究表明,一些C2H2-ZNF与RNA相互作用,但其程度未被描述.
研究的目的:
- 研究C2H2-ZNFs的RNA结合能力.
- 为了确定C2H2-ZNFs是否调节转录后RNA过程.
- 为了解RNA生物学中的C2H2-ZNF功能提供一个全面的资源.
主要方法:
- 紫外线交叉连接和免疫沉 (CLIP) 来映射RNA结合.
- 用于高分辨率RNA结合配置文件的CLIP测序 (CLIP-seq).
- 结合CLIP-seq与ChIP-seq,蛋白质与蛋白质相互作用数据和转录组概况.
主要成果:
- 在150个分析的C2H2-ZNF中,有148个直接与人体细胞中的RNA结合.
- C2H2-ZNFs的RNA结合配置不同于它们的DNA结合偏好.
- C2H2-ZNFs调节关键的转录后过程:mRNA前拼接,分裂和多化,以及m6A修饰.
结论:
- 大部分C2H2-ZNFs具有RNA结合活性.
- 在转录后的基因调节中,C2H2-ZNFs起着重要的作用.
- 这项研究扩展了C2H2-ZNFs已知的功能,并为未来的研究提供了宝贵的资源.
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