SETD3通过正规的Wnt信号通路调节小鼠胚胎干细胞的内皮分化
Ceren Alganatay1, Emre Balbasi1, Nurcan Tuncbag2
1Faculty of Arts and Sciences, Department of Biological Sciences, Middle East Technical University, Ankara, Turkey.
概括
含SET域3 (SETD3) 对于胚胎干细胞 (ESC) 内皮分化至关重要. 它通过与β-catenin相互作用来调节Wnt信号通路,影响基因表达和细胞命运.
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
- 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:
- 胚胎干细胞 (ESC) 对于研究早期细胞命运决定至关重要,因为它们具有自我更新和多能性.
- 血统承诺需要精确的基因表达调节,涉及转录因子 (TF) 和染色质修饰剂.
- 含有SET域3 (SETD3) 的甲基转移酶,此前被确定为对小鼠ESC (mESCs) 中中皮系系谱的承诺很重要.
研究的目的:
- 在mESCs的内皮分化过程中调查SETD3依赖的转录基因变化.
- 阐明SETD3在内皮分化过程中调节Wnt信号通路中的作用.
- 了解SETD3如何影响β-catenin的核定位和活性.
主要方法:
- 时间过程RNA测序 (RNA-seq) 分析以确定SETD3依赖的基因表达变化.
- 在SETD3缺乏的mESC中评估Wnt转录活性和β-catenin水平.
- 近距离结合试验 (PLA) 检测SETD3和β-catenin之间的相互作用.
主要成果:
- 在mESC分化过程中,SETD3对于内皮基因网络的及时激活至关重要.
- 缺少SETD3导致Wnt信号活动减少,核β-catenin水平降低.
- SETD3与β-catenin相互作用,其缺乏会影响β-catenin的亚细胞局部.
结论:
- 通过调节正规的Wnt信号通路,SETD3在内皮分化中发挥着关键作用.
- 在缺乏SETD3的mESC中改变Wnt通路活性和β-catenin局部化有助于分化缺陷.
- 重新表达SETD3或激活Wnt信号可以挽救观察到的分化缺陷.
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