带偏差是多个FGF通过FGFR1的差异信号的基础
Kelly Karl1, Nuala Del Piccolo1, Taylor Light1
1Department of Materials Science and Engineering, Institute for NanoBioTechnology, and Program in Molecular Biophysics, Johns Hopkins University, Baltimore, United States.
eLife
|April 3, 2024
概括
纤维细胞生长因子 (FGF) 配体在发育过程中通过纤维细胞生长因子受体 (FGFRs) 发出不同的信号. FGF8是一种偏向的连接体,与FGF4和FGF9不同,影响FGFR1c的信号机制.
科学领域:
- 生物化学 生物化学
- 发展生物学 发展生物学
- 分子生物学分子生物学
背景情况:
- 纤维细胞生长因子 (FGF) 连接体通过纤维细胞生长因子受体 (FGFRs) 传递信号.
- 通过FGFRs通过FGF连接体的差异信号传递对于胚胎发育至关重要,包括四肢芽生长.
- 了解这些信号差异是解读发育过程的关键.
研究的目的:
- 研究由FGF4,FGF8和FGF9.9诱导的差异性FGFR1c信号的机制基础.
- 探索受体氨酸激酶 (RTK) 信号传递中偏向激进的概念.
- 为了将连接体偏差与受体构造相关联.
主要方法:
- 使用了定量生物物理技术.
- 使用了福斯特共振能量转移 (FRET) 实验.
- 进行了FRS2和FGFR1c酸化的分析.
主要成果:
- FGF8优先诱导FRS2酸化和细胞外基质降解.
- FGF4和FGF9优先诱导FGFR1c酸化和细胞生长停止.
- 观察到偏差信号与FGFR1c跨膜域二次体的构造之间存在相关性.
结论:
- 与FGF4和FGF9.9相比,FGF8充当了一个偏向的FGFR1c配体.
- 在RTK信号传递中,连接体偏差与受体跨膜域二分体构成有机联系.
- 这项研究推进了对FGF信号传导的理解,并引入了连接体偏差作为在发育过程中RTK功能中的重要因素.
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