在活体内皮细胞中成像和分析纤维状动蛋白结构的动态
Jerome W Breslin1, Zeinab Y Motawe2
1Department of Molecular Pharmacology and Physiology, Morsani College of Medicine, University of South Florida, Tampa, FL, USA. breslin@usf.edu.
Methods in molecular biology (Clifton, N.J.)
|September 30, 2023
概括
使用绿色光蛋白 (GFP) - 乙融合蛋白可视化亚细胞结构动态,为内皮细胞透性提供了新的见解. 这种方法增强了对微血管功能和细胞对炎症媒介的反应的理解.
科学领域:
- 细胞生物学 细胞生物学
- 分子生物学分子生物学
- 身体生理学 身体生理学
背景情况:
- 内皮透性对微血管功能至关重要,并由信号机制调节.
- 像免疫光等传统方法提供静态快照,限制了对动态细胞过程的理解.
- 分子生物学的进步使得光聚变蛋白的创造成为可能,用于实时可视化亚细胞结构.
研究的目的:
- 详细介绍了可视化内皮细胞中actin导线动态的协议.
- 描述用于量化亚细胞结构动态的分析工具.
- 提高对内皮屏障功能调节的理解.
主要方法:
- 融合蛋白的生成将绿色光蛋白 (GFP) 与内皮细胞蛋白 (例如VE-cadherin,β-actin) 联系起来.
- 时间间隔显微镜记录表达GFP-actin的内皮细胞.
- 使用分析工具来量化亚细胞结构的动态.
主要成果:
- GFP融合蛋白与本地对应物一起融入细胞结构.
- 动态可视化显示了通过炎症介质刺激后亚细胞结构的修饰.
- 与固定细胞成像相比,提供了更先进的内皮细胞屏障维护机制.
结论:
- 对GFP-actin表达内皮细胞的时隔显微镜是一种研究细胞动态的强大工具.
- 这种方法显著提高了对内皮透气性和微血管功能的理解.
- 描述的协议和分析工具有助于研究内皮膜屏障性质的动态调节.
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