A novel luminescent bifunctional POSS as a molecular platform for biomedical applications
作者:Francesco Olivero、Filippo Renò、Fabio Carniato、Manuela Rizzi、Mario Cannas、Leonardo Marchese
DOI:10.1039/c2dt30218g
日期:——
A novel luminescent polyhedral oligomeric silsesquioxane (POSS) containing in the structure a fluorescein derivative molecule and a carboxylic functionality, suitable to anchor different organic compounds (dyes, markers, drugs, contrast agents,…), was successfully synthesized and characterized in this manuscript by a multidisciplinary approach. An emission enhancement of the dye of ca. four times was found after reaction with POSS, rendering this new hybrid compound a promising contrast agent for optical imaging. In vitro tests on tumoral HeLa cells demonstrated that the luminescent POSS (namely POSS_F), here described, is able to be taken up in the cell cytosol by an efficient and selective process. Its high chemical versatility and peculiar properties could render this novel bifunctional POSS a molecular platform for biomedical applications.
一种新型的发光多面体低聚硅氧烷(POSS)在其结构中包含荧光素衍生物分子和羧基功能团,适合于固定不同的有机化合物(染料、标记物、药物、对比剂等),在本手稿中通过多学科方法成功合成并表征。与POSS反应后,染料的发射增强约四倍,使这种新型混合化合物成为光学成像的有前景的对比剂。对肿瘤HeLa细胞的体外测试表明,所描述的发光POSS(即POSS_F)能够通过有效且选择性的过程被细胞质内摄取。其高化学多样性和独特性质使得这种新型双功能POSS可能成为生物医学应用的分子平台。