通过Twist1转录破坏稳定的缓解,生态机关的身份出现了
Lara C Busby1, Jessica R Patrick1, Luke W Lyons1
1Department of Molecular and Cell Biology, University of California, Berkeley; Berkeley, California, USA.
bioRxiv : the preprint server for biology
|September 15, 2025
概括
一种新的两层机制调节了神经细胞 (CNCC) 中的Twist1表达,控制了它们的发展成为ectomesenchyme. 这种特定于脊椎动物的系统将增强剂活性与转录积累分开,确保适当的细胞命运获取.
科学领域:
- 发展生物学 发展生物学
- 分子生物学分子生物学
- 遗传学 是一个遗传学.
背景情况:
- 神经细胞 (CNCC) 产生了多种细胞类型,包括ectomesenchyme.
- 转录因子Twist1对于CNCC获得ectomesenchymal身份至关重要.
- 了解Twist1规则是破译CNCC差异化的关键.
研究的目的:
- 研究控制CNCC中Twist1表达的监管机制.
- 确定涉及Twist1调节的遗传元素和因素.
- 阐明 Twist1 的表达在发育过程中是如何控制的.
主要方法:
- 在 *Gallus gallus* 和 *Danio rerio* 胚胎中分析Twist1表达.
- 染色体相互作用分析 (Hi-ChIP),ATAC-seq,以及CUT&RUN测序.
- 报告员测试以评估增强剂活性和转录稳定性.
主要成果:
- 在*Hdac9*位点内确定了Twist1的远端增强剂,在神经管和CNCC中活跃.
- 这种增强剂与TFAP2因子结合,并在迁移前的CNCC中活跃.
- Twist1 3' UTR以脊椎动物特有的方式破坏了转录的稳定,解释了时间间隙.
结论:
- 一个双层的调节机制控制着CNCC中Twist1表达的开始.
- 这种机制涉及增强剂活性和通过3' UTR进行后转录调节.
- 这一系统对于脊椎动物的CNCC来说至关重要,以实现ectomesenchymal身份.
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