Shc1与Frs2和Shp2合作,在FGF诱导的镜头开发中招募Grb2
Qian Wang1, Hongge Li1, Yingyu Mao1
1Department of Ophthalmology, Columbia University, New York, United States.
eLife
|May 6, 2025
概括
纤维细胞生长因子 (FGF) 信号传递对透镜发育至关重要. 这项研究确定Shc1是招募Grb2的关键参与者,这对于FGF介导的MAPK信号和透镜形成至关重要.
科学领域:
- 分子生物学分子生物学
- 发展生物学 发展生物学
- 细胞信号传递 细胞信号传递
背景情况:
- 纤维细胞生长因子 (FGF) 信号激活下游通路,包括对发育至关重要的Ras/MAPK级联.
- 适应蛋白Grb2是FGF信号传输的核心,但其精确的招募机制尚不清楚.
研究的目的:
- 阐明在小鼠透镜发育过程中FGF信号中Grb2招募的机制.
- 确定Frs2,Shp2和Shc1在FGF受体复合体形成和下游信号传递中的作用.
主要方法:
- 在小鼠模型中,FGF信号元件的遗传消去.
- 分析FGF受体突变及其对信号通路的影响.
- 研究Grb2,Shp2和Shc1在镜片发育和MAPK激活中的功能.
主要成果:
- FGF信号传递对于早期的透镜诱导至关重要,影响转录调节和细胞骨组织.
- 失去Grb2会通过消除MAPK信号来阻止透镜的发展.
- Shp2部分调解了Grb2的招募,而Shc1在将Grb2定位到FGF信号复合体中发挥了关键作用.
结论:
- 在FGF信号发送期间,Shc1与Frs2和Shp2在招募Grb2方面发挥着关键的合作作用.
- 了解这些招聘动态对于理解FGF驱动的发展过程,如透镜形成至关重要.
相关概念视频
Coat Assembly and GTPases
3.4K
Vesicles incorporate different coat protein subunits in different cell locations, which changes the properties of the coat, such as the shape and geometry of the transport vesicles. Thus, vesicle coat proteins also play a significant role in cargo selection.
Coat assembly depends on the local availability of phosphatidylinositol phosphates or PIPs and GTP-binding proteins. Adaptor proteins, which link the coat proteins to the membrane, bind to these PIPs and play a crucial role in controlling...
Coat assembly depends on the local availability of phosphatidylinositol phosphates or PIPs and GTP-binding proteins. Adaptor proteins, which link the coat proteins to the membrane, bind to these PIPs and play a crucial role in controlling...
3.4K
Assembly of Signaling Complexes
5.6K
Multiprotein signaling complexes are formed in a dynamic process involving protein-protein interactions at the cytoplasmic domain of transmembrane receptors or enzymatic and non-enzymatic proteins associated with the receptor. These complexes ensure the activation and propagation of intracellular signals that regulate cell functions.
Interaction domains in cell signaling
Interaction domains recognize exposed features of their binding partners containing post-translationally modified sequences,...
Interaction domains in cell signaling
Interaction domains recognize exposed features of their binding partners containing post-translationally modified sequences,...
5.6K
Small GTPases - Ras and Rho
3.8K
Ras and Rho are small monomeric GTPases that act downstream of receptor tyrosine kinase (RTK) and regulate various cellular processes. These GTPases switch between active and inactive states by binding to guanine nucleotides.
Three regulatory proteins control their activity:
Three regulatory proteins control their activity:
3.8K
Mechanism of Filopodia Formation
2.2K
Filopodia are thin, actin-rich cellular protrusions that play an important role in many fundamental cellular functions. They vary in their occurrence, length, and positioning in different cell types, suggesting their diverse roles.
Their main function is to guide migrating cells during normal tissue morphogenesis or cancer metastasis by recognizing and making initial contacts with the extracellular matrix. However, they can also act as stationary cell anchors or help to establish communication...
Their main function is to guide migrating cells during normal tissue morphogenesis or cancer metastasis by recognizing and making initial contacts with the extracellular matrix. However, they can also act as stationary cell anchors or help to establish communication...
2.2K
Hedgehog Signaling Pathway
7.3K
The Hedgehog gene (Hh) was first discovered due to its control of the growth of disorganized, hair-like bristles phenotype in Drosophila, much like hedgehog spines. Hh plays a crucial role in the development of organs and the maintenance of homeostasis in both invertebrates and vertebrates. However, while Drosophila has only one Hh protein, mammals have multiple functional Hedgehog proteins - Sonic (Shh), Desert (Dhh), and Indian Hedgehog (Ihh). All of these homologous proteins have adapted to...
7.3K
TGF - β Signaling Pathway
7.2K
The TGF-β signaling pathway regulates cell growth, differentiation, adhesion, motility, and development. TGF-β ligands that induce TGF-β signaling are synthesized in their latent form. Several proteases or cell surface receptors such as integrins act upon the latent form, releasing the active ligand. There are three types of mammalian TGF-βs: (TGF-β1, TGF-β2, and TGF-β3) that bind as homodimers or heterodimers to TGF-β receptors. The TGF-β receptors...
7.2K


