向的NIR光机械互锁分子-生物结合物用于活癌细胞的子线粒体刺激排放枯竭超分辨率显微镜
Samiran Kar1, Rabi Sankar Das1, Tapas Bera1
1Department of Chemistry, Organic Chemistry Section, Jadavpur University, Kolkata 700032, India.
Bioconjugate chemistry
|January 10, 2025
概括
这项研究引入了一种新的双位生物结合物,用于先进的癌症成像. 这种创新分子能够使用超高分辨率显微镜精确可视化活癌细胞内的线粒体.
科学领域:
- 生物结合化学 生物结合化学
- 超分子化学 超分子化学
- 先进的显微镜技术
背景情况:
- 机械互锁分子 (MIMs) 为分子设计提供了独特的特性.
- 有针对性的癌症成像需要具有特异性和高分辨率的探针.
- 近红外 (NIR) 光对于生物成像具有优势,因为减少了组织自光.
研究的目的:
- 设计和合成一种水溶性,超明亮的NIR光MIMs-生物结合物,用于双向癌细胞成像.
- 评估生物结合物的选择性向癌细胞及其线粒体的能力.
- 在超分辨率显微镜中证明生物结合物的实用性,用于可视化线粒体超结构和动态.
主要方法:
- 使用Cu(I) 催化点击化学,将RGDS和TPP+功能连接到MIMs核心.
- 刺激发射耗尽 (STED) 超高分辨率光显微镜被用于成像.
- 活生生的癌细胞被用来评估向特异性,细胞透和线粒体成像.
主要成果:
- 合成的生物结合物, (RGDS) 2-Mito-MIMs-TPP+,表现出极好的水溶性和NIR光特性.
- 在活癌细胞中成功实现了αVβ3整合素和线粒体的双重向.
- 通过STED显微镜,可以可视化线粒体超结构 (晶状体) 和实时跟踪恶性线粒体.
结论:
- 开发的MIMs-生物结合物是针对癌细胞的超分辨率显微镜的一个有前途的工具.
- 它的光物理特性,生物相容性和双重定位能力使其适用于先进的生物成像应用.
- 这项工作突出了基于MIMs的生物结合物的潜力,用于在瘤学中精确的亚细胞成像.
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