内皮USP8对于血管生成至关重要.
Alba Pau-Navalón1,2, Tamara González-Costa1,2, María Lancho Lavilla1
1Intercellular Signalling in Cardiovascular Development and Disease Laboratory CNIC, Centro Nacional de Investigaciones Cardiovasculares Carlos III (F.P.S), Madrid, Spain.
Angiogenesis
|January 28, 2026
概括
内皮乌比基特异性蛋白酶8 (USP8) 在发育期间和出生后对血管形成 (血管生成) 至关重要. 它的缺失会损害血管生长,这表明USP8是抗血管性治疗的治疗点.
科学领域:
- 细胞生物学 细胞生物学
- 发展生物学 发展生物学
- 分子生物学分子生物学
背景情况:
- 血管新生对于发育和疾病至关重要,血管内皮生长因子A (VEGF-A) 信号作为一个关键的调节器.
- 乌比基特异蛋白酶8 (USP8) 是一种已知的影响蛋白质贩运和激活的二维基基酶,包括体外的VEGF受体2 (VEGFR2).
- 了解USP8在内皮细胞中的作用对于开发有针对性的抗血管性疗法至关重要.
研究的目的:
- 在不同发育和产后阶段内皮细胞中研究USP8的体内功能.
- 阐明USP8调节血管生成的分子机制.
主要方法:
- 条件小鼠基因被用来删除Usp8在胚胎,出生后早期和成年阶段的内皮细胞中.
- 评估了血管表型,包括体内血管形成,视网膜血管生成和大脑血管结构.
- 分子分析的重点是VEGFR2贩运,内皮细胞循环激活和ERK等信号通路.
主要成果:
- 在胚胎发生过程中Usp8的内皮特异性缺失导致血管生成受损和胚胎死亡.
- 产后删除导致视网膜和大脑血管生成的严重缺陷,而成人删除没有显著的血管影响.
- 丢失USP8导致VEGFR2在内分泌体中的积累,细胞循环激活减少,信号通路受损.
结论:
- 内皮USP8在胚胎和出生后早期发育过程中对血管发生是必不可少的,但对于成年人血管恒温并非如此.
- USP8通过控制VEGFR2贩运和下游信号来调节血管新生.
- USP8代表了在由异常血管形成驱动的疾病中的抗血管性策略的潜在治疗标.
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