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普罗格拉努林和EGFR调节类似受体的铁酸激酶分类和稳定性,在间皮瘤细胞
Elisa Ventura1, Antonino Belfiore2, Renato V Iozzo3
1Sbarro Institute for Cancer Research and Molecular Medicine, Center for Biotechnology, Department of Biology, College of Science and Technology, Temple University, Philadelphia, Pennsylvania, United States.
American journal of physiology. Cell physiology
|July 3, 2023
概括
益格拉努林结合RYK,一个Wnt共受体,并调节其在间皮瘤中的贩运和稳定性. 皮表皮生长因子受体 (EGFR) 也调节RYK稳定性,揭示了癌症中的复杂信号.
科学领域:
- 在瘤学瘤学.
- 分子生物学分子生物学
- 细胞信号传递 细胞信号传递
背景情况:
- 普罗格拉努林是一种生长因子,在间皮瘤中具有已证明的前瘤活性.
- 在中皮质瘤中,progranulin信号传递涉及表皮生长因子受体 (EGFR) 和类似受体的氨酸激酶 (RYK),Wnt通路的共受体.
- 精确的分子机制,规范益格兰,EGFR和RYK之间的相互作用仍然没有定义.
研究的目的:
- 阐明调节在间皮瘤中前列蛋白,EGFR和RYK之间的功能相互作用的分子机制.
- 为了研究progranulin在调节RYK活动,贩运和稳定中的作用.
主要方法:
- 与酶相关的免疫吸收试验 (ELISA) 检测进激素和RYK之间的直接相互作用.
- 免疫光和近距离结合试验,以评估progranulin和RYK的同位化.
- 用内分细胞抑制剂进行治疗,以评估信号对受体内化的依赖性.
- 分析RYK无化,内细胞化和对progranulin反应的稳定性.
主要成果:
- 益格拉努林直接与RYK (K=0.67) 结合,并与它结合在间皮瘤细胞内的囊泡区内.
- 益格拉努林依赖信号对内分细胞抑制剂敏感,这意味着受体内部化.
- 普罗格拉努林通过caveolin-1通路促进RYK的无处不在和内细胞形成,调节RYK的稳定性.
- 在中皮瘤细胞中,RYK与EGFR形成复合体,影响RYK的稳定性.
结论:
- 普罗格拉努林直接与RYK相互作用,调节其无处不在,内细胞分裂,并在间皮瘤中贩运.
- EGFR在调节RYK稳定性方面发挥作用,这表明这些受体之间存在复杂的相互作用.
- 这些发现揭示了RYK活动的复杂调节和RYK活动的贩运,在间皮瘤进展中,由progranulin和EGFR进行调节.
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