Subcellular co-delivery of two different site-oriented payloads based on multistage targeted polymeric nanoparticles for enhanced cancer therapy
作者:Chao-Qun You、Hong-Shuai Wu、Zhi-Guo Gao、Kai Sun、Fang-Hui Chen、W. Andy Tao、Bai-Wang Sun
DOI:10.1039/c8tb02230e
日期:——
derivative (RA–Pt) can be delivered with high affinity to the nucleus of target cells, facilitating the binding of cisplatin to double-stranded DNA. Similarly, a synthesized derivative generated by conjugation of triphenylphosphine (TPP) and celastrol (TPP–Cet) may facilitate mitochondrial targeted drug delivery in tumor cells, inducing ROS accumulation and thereby leading to apoptosis. Relative to nanoparticles
在癌症治疗中,使用纳米载体共同递送两种或多种抗肿瘤药物已显示出巨大的希望,但是需要更多的工作来选择性地将药物靶向特定的亚细胞器。为此,我们的研究报告了“智能”聚合物纳米粒子,该纳米粒子可以封装两个不同的定点前药分子,从而使它们能够基于NIR介导的控释到达其靶向的亚细胞细胞器,从而实现细胞核的靶向修饰或线粒体。特别是,全反式视黄酸(RA)缀合的顺铂衍生物(RA–Pt)可以高亲和力传递至靶细胞的核,从而促进顺铂与双链DNA的结合。同样,由三苯膦(TPP)和Celastrol(TPP-Cet)结合产生的合成衍生物可能促进线粒体靶向药物在肿瘤细胞中的递送,从而诱导ROS积累,从而导致细胞凋亡。相对于载有单一治疗剂的纳米颗粒,载有双重抗肿瘤剂的纳米载体显示出有希望的协同作用,在体内具有显着的肿瘤抑制作用(81.5%),且全身毒性比单独的游离治疗剂或没有靶向配体的载药纳米颗粒低。这些结果表明,以位点为