在Xenopus早期发育过程中,Foxj3抑制TGF-β信号响应的转录
Gang-Ho Yoon1, Myeoung Su Kim1, Sun-Cheol Choi2
1Department of Biochemistry and Molecular Biology, Brain Korea 21 Project, University of Ulsan College of Medicine, Asan Medical Center, 05505, Seoul, Korea.
Genes & genomics
|June 16, 2025
概括
叉头盒J3 (Foxj3) 作为Xenopus胚胎中的转录抑制剂,对参与Activin/Nodal和BMP信号通路的基因进行负调节. 在早期发育过程中,这种功能通过RNF152/β-catenin信号轴进行介导.
科学领域:
- 发育生物学 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:
- 叉头盒 (Fox) 蛋白质是参与胚胎发育和成人功能的关键转录因子.
- 狐蛋白质拥有一个保存的DNA结合域,称为"叉盒".
- Foxj3在调节基因转录中的作用需要进一步阐明.
研究的目的:
- 研究Foxj3作为转录抑制剂的分子机制.
- 确定Foxj3在调节Xenopus胚胎中的Activin/Nodal和BMP信号通路中的作用.
主要方法:
- 使用mRNA微注射和morpholino oligos的功能增益和丧失研究.
- 定量逆转录PCR (RT-PCR) 和光酶试验用于评估基因转录.
- 整体安装在位杂交和动物帽测试,以分析胚胎发育和基因表达.
主要成果:
- Foxj3过度表达抑制了Activin/Nodal和BMP4诱导的基因反应,导致发育缺陷.
- 福克斯j3倒置增强了节点响应转录,并导致有缺陷的胚胎.
- 福克斯j3介导的抑制依赖于RNF152并且可以被β-catenin阻断.
结论:
- 在Xenopus早期发育过程中,Foxj3作为转录抑制剂起作用.
- RNF152/β-catenin信号轴对于Foxj3的抑制功能至关重要.
- Foxj3在调节TGF-β依赖的转录反应方面发挥着关键作用.
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