对VEGFR1,VEGFR2和NRP1在人体内皮细胞中的局部化作用
Sarvenaz Sarabipour1,2, Karina Kinghorn3,4, Kaitlyn M Quigley3
1Institute for Computational Medicine and Department of Biomedical Engineering, Johns Hopkins University, Baltimore, Maryland, United States of America.
PLoS computational biology
|July 16, 2025
概括
血管内皮生长因子受体 (VEGFRs) 贩运被带结合改变,大多数信号复合体是细胞内形成的. 这种细胞内储存效应会影响受体竞争和血管生成调节.
科学领域:
- 分子和细胞生物学分子和细胞生物学
- 生物物理学的生物物理.
- 生物化学 生物化学
背景情况:
- 血管内皮生长因子受体 (VEGFRs) 对于血管生成至关重要,其细胞表面的可用性由细胞内贩运调节.
- 之前的工作使用实验数据和计算建模量化了VEGFR1,VEGFR2和Neuropilin-1 (NRP1) 的差异性贩运.
研究的目的:
- 量化不同血管内皮生长因子 (VEGF) 配体如何改变VEGFR贩运和信号复杂动态.
- 研究受体局部化和连接体结合对信号启动复合体局部化和动态的影响.
主要方法:
- 使用实验数据进行计算建模和模拟.
- 对四种VEGF-A和胎盘生长因子 (PLGF) 拼接异型的分析.
- 参数化和验证使用两个特定连接体的新实验数据.
主要成果:
- VEGFR2贩运因连接物结合 (增加内部化) 而改变,而VEGFR1贩运仍然不受影响.
- 大多数VEGFR1和VEGFR2的联结体受体复合体都位于细胞内,挑战了标准的细胞表面激活模型.
- 细胞内联体可用性的实质性"储存效应"影响受体竞争和信号动态,而不是最小的细胞表面竞争.
结论:
- 联结对VEGFR贩运有不同的影响,主要是通过增加VEGFR2内部化.
- 结合体-受体复合体的细胞内定位很重要,在受体竞争和信号传递中起着关键作用.
- 了解这些贩运动态和"储库效应"对于开发针对血管生成中VEGFR信号的治疗方法至关重要.
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