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西兹尔德 (Frzb3) 与非正规的Wnt配体进行物理相互作用,以抑制胃化细胞运动
Jaeho Yoon1, Santosh Kumar1, Haeryung Lee2
1Department of Biochemistry, Institute of Cell Differentiation and Aging, College of Medicine, Hallym University, Chuncheon, Gangwon-Do 24252, Republic of Korea.
Molecules and cells
|May 17, 2024
概括
骨形态遗传蛋白4 (Bmp4) 信号通过诱导声 (szl) 表达来限制Xenopus胚胎腹部侧细胞运动,这抑制了非正规的Wnt信号,并防止了过度的细胞迁移.
科学领域:
- 发展生物学 发展生物学
- 细胞信号传递 细胞信号传递
- 胚胎发生是胚胎发生.
背景情况:
- 胃流动期间的细胞运动对于胚胎发育至关重要.
- 非正规的Wnt信号调节细胞迁移,特别是融合和扩展.
- 在Xenopus胃化过程中限制腹腔细胞运动的机制尚未完全理解.
研究的目的:
- 研究Bmp4目标基因sizzled (szl) 在限制胃细胞运动中的作用.
- 为了确定SZL是否抑制胚胎腹侧非正规Wnt信号传递.
主要方法:
- 在Xenopus胚胎中SZL的异胎表达.
- 分析胃化缺陷和细胞延长在扩张器.
- 免疫沉测试检测蛋白质相互作用.
- 评估参与Wnt信号传递的小GTPase (RhoA,Rac1) 的激活.
主要成果:
- 宫外细胞表达会导致剂量依赖性胃化缺陷,而不会影响细胞命运.
- 在Activin治疗的动物上,SzL过度表达减少了细胞延长,卡普和凯勒扩展者.
- Szl与Wnt5和Wnt11配体进行了物理相互作用.
- 这种过度表达减少了RhoA和Rac1的激活.
结论:
- 在Xenopus gastrulation期间,Bmp4信号负面调节腹腔细胞运动.
- 这种调节通过诱导 szl 表达而发生.
- Szl通过与Wnt配体相互作用并降低GTPase活性来抑制非正规的Wnt信号传递.
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