Ulk4通过调节 Stk36 状局部化和 Gli2 酸化来促进 Shh 信号传递
Mengmeng Zhou1, Yuhong Han1, Jin Jiang1,2
1Department of Molecular Biology, University of Texas Southwestern Medical Center, Dallas, United States.
eLife
|December 14, 2023
概括
类似Unc-51的激酶4 (Ulk4) 和Stk36通过酸化Gli2在初级毛尖上,这是发育和组织修复的关键步骤,协作激活刺 (Hh) 途径.
科学领域:
- 细胞生物学 细胞生物学
- 分子生物学分子生物学
- 发展生物学 发展生物学
背景情况:
- 刺 (Hh) 信号通路对于胚胎发育和组织平衡至关重要.
- 基转录因子调解Hh信号,建议激活发生在主尖.
- 眼尖的 Gli 激活的确切机制在很大程度上是未知的.
研究的目的:
- 阐明Unc-51-like激酶4 (Ulk4) 在子信号通路中的作用.
- 研究Ulk4,Stk36和Gli2在调节Hh通路激活中的相互作用.
- 确定Ulk4促进Gli2酸化和初级毛激活的机制.
主要方法:
- 同免疫沉试验用于研究蛋白质相互作用.
- 免疫光显微镜以评估蛋白质定位在初级毛.
- 西方涂抹检测蛋白质酸化和通路激活.
- 基因操纵以评估Ulk4和Stk36对于Hh通路功能的必要性.
主要成果:
- Ulk4是一种伪激酶,与Stk36和Gli2相互作用,桥接激酶和基质.
- Ulk4对于 Stk36 局部化到纤毛尖,Gli2 酸化和 Hh 途径激活至关重要.
- Ulk4和Stk36都在响应Hh信号时与状尖端的Gli2共定位,并相互依赖于状积累.
- Ulk4的状局部化取决于Stk36激酶活性和Ulk4在Thr1023.3的酸化.
结论:
- Ulk4在调节Hh信号传递方面发挥着关键作用,它通过促进Stk36介导的Gli2酸化和主尖上的激活来调节Hh信号.
- 这些发现揭示了Hh通路调节的新机制,涉及尖的Ulk4和Stk36.
- 这项研究为管理发育和组织平衡期间Hh通路激活的分子事件提供了新的见解.
关键词:
Gli2 Gli2 Gli2 Gli2 Gli2 Gli2 Gli2 Gli2 Gli2 Gli2 Gli2 Gli2 Gli2 Gli2 Gli2 Gli2 Gli2 Gli2 Gli2 Gli2 Gli2 Gli2 Gli2 Gli2 Gli2 Gli2 Gli2 Gli2 Gli2 Gli2 Gli2 Gli2 Gli2 Gli2 Gli2 Gli2 Gli2 Gli2 Gli2 Gli2 Gli2刺是一种刺.在 Stk36 找 Stk36在 Ulk1 里面,你会看到 Ulk1.在 Ulk3 里面,你会看到 Ulk3 的位置.在 Ulk4 中,我们可以使用 Ulk4.细胞生物学 细胞生物学发育生物学是发展生物学.没有,没有,没有.主要的纤毛是主要的纤毛.伪酶是一种假酶.
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