Photo-triggered fluorescent theranostic prodrugs as DNA alkylating agents for mechlorethamine release and spatiotemporal monitoring
作者:Yanting Cao、Rong Pan、Weimin Xuan、Yongyi Wei、Kejian Liu、Jiahong Zhou、Wei Wang
DOI:10.1039/c5ob00500k
日期:——
However, upon photo-irradiation, the active mechlorethamine is released and induces efficient DNA cross-links, accompanied by a strong fluorescence enhancement (152 fold). Furthermore, DNA cross-linking activity from the release can be transformed into anticancer activity observed in in vitro studies of tumor cells. Importantly, the drug release progress and the movement can be conveniently monitored by
我们描述了一种新的治疗学策略,用于选择性递送和时空监测甲氧乙胺,一种DNA烷化剂。设计了一种光响应性前药,它由光不稳定的邻硝基苯乙基,DNA烷基化甲乙乙胺药物和香豆素荧光团组成。掩盖“ N在前药中带正电荷状态的甲氯乙胺中,其无活性,无毒,选择性和无荧光。确实,稳定的前药对具有和不具有紫外线活化作用的正常细胞显示出微不足道的细胞毒性,并且是完全无荧光的。但是,在光照射下,活性的甲乙胺会释放并诱导有效的DNA交联,并伴有强烈的荧光增强作用(152倍)。此外,释放后的DNA交联活性可以转化为体外观察到的抗癌活性肿瘤细胞的研究。重要的是,可以通过荧光光谱法方便地监测药物的释放过程和运动。机理研究证明,DNA交联活性主要是由于DNA烷基化甲氧乙胺的释放所致。总而言之,研究显示了肿瘤治疗策略在癌症治疗中有效治疗的作用。