生物相容的基于硫的共价探针,用于活细胞和固定细胞内内源性管氨酸光纳米镜
Gražvydas Lukinavičius1, Marie Auvray1, Tanja Koenen2
1Max Planck Institute for Multidisciplinary Sciences.
Research square
|February 20, 2025
概括
研究人员开发了一种新的共价光探针6-SiR-o-C-CTX,用于精确的管成像. 这种探测器最大限度地减少了管蛋白功能的干扰,并且与超分辨率显微镜兼容.
科学领域:
- 细胞生物学 细胞生物学
- 生物化学 生物化学
- 显微镜的使用方法
背景情况:
- 光探测器对于可视化细胞动态至关重要,通常通过超高分辨率成像进行增强.
- 传统的方法,如光蛋白融合或连接体的光体,可以破坏细胞功能.
- 内源性管氨酸对细胞结构和分裂至关重要,需要精确的成像方法.
研究的目的:
- 开发一种新的共价光探针,用于内源性管.
- 克服现有探针的局限性,例如功能中断和联结体效应.
- 为了使素的高分辨率成像能够在对细胞过程产生最小影响.
主要方法:
- 基于cabazitaxel和-rhodamine的新型共价光探针6-SiR-o-C-CTX的设计和合成.
- 加入一个生物相容的可切割连接器与一个硫中心.
- 在各种人类细胞系中使用共聚焦和STED纳米镜进行验证.
主要成果:
- 这个名为6-SiR-o-C-CTX的探测器表现出极好的细胞透性和化特性.
- 在多个人类细胞系中实现了内源性突素的共价标记.
- 针对小部分的洗保留了管染色,最大限度地减少了功能性干扰.
- 在活细胞和固定细胞中证明了与STED纳米镜的兼容性.
结论:
- 6-SiR-o-C-CTX是一种有效的共振光探头,用于高分辨率的管成像.
- 探针设计尽量减少管功能中断,解决先前方法的局限性.
- 这种技术为研究细胞过程中的蛋白动力学提供了一个强大的工具.
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