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Combinatory antitumor therapy by cascade targeting of a single drug.
Acta Pharmaceutica Sinica B ( IF 14.7 ) Pub Date : 2019-09-05 , DOI: 10.1016/j.apsb.2019.08.011
Aiyun Liu 1 , Huaisong Wang 1 , Xiaoshuang Hou 1 , Yu Ma 1 , Gongjun Yang 1 , Yanglong Hou 2 , Ya Ding 1
Affiliation  

Combination therapy has shown its promise in the clinic for enhancing the efficacy of tumor treatment. However, the dose control of multiple drugs and their non-overlapping toxicity from different drugs are still great challenge. In this work, a single model drug, paclitaxel (PTX), is used to realize combination therapy and solve the problems mentioned above. Either PTX or its triphenylphosphine derivative (TPTX) is encapsulated in galactose-modified liposomes (GLips) to obtain GLips-P or GLips-TP, which are simply mixed in different ratios to finely control the proportion of PTX and TPTX. These mixed liposomes, GLips-P/TP, feature a cascade target delivery of PTX, from tissue to cell, and then to organelle. PTX plays a primary role to cause the cytotoxicity by microtubule bindings in cytoplasm, while TPTX is proved to increase the intracellular levels of caspase-3 and caspase-9 that cause apoptosis via a mitochondria-mediated pathway. Notably, GLips-P/TP 3:1 exhibited the significant drug synergy in both cytotoxicity assay of HepG2 cells and the treatment efficacy in Heps xenograft ICR mouse models. This work not only demonstrates the great promise of a cascade targeting delivery for precise tumor treatment, but also offers a novel platform to design combinatory therapy systems using a single drug.

中文翻译:

通过单一药物的级联靶向进行联合抗肿瘤治疗。

组合疗法已在临床上显示出增强肿瘤治疗功效的希望。然而,多种药物的剂量控制及其来自不同药物的不重叠毒性仍然是巨大的挑战。在这项工作中,单一模型药物紫杉醇(PTX)用于实现联合治疗并解决上述问题。将PTX或其三苯膦衍生物(TPTX)封装在半乳糖修饰的脂质体(GLips)中,以获得GLips-P或GLips-TP,将它们简单地以不同的比例混合以精确控制PTX和TPTX的比例。这些混合脂质体GLips-P / TP具有PTX的级联靶标递送功能,从组织到细胞,再到细胞器。PTX在细胞质中通过微管结合引起细胞毒性起主要作用,而TPTX被证明可以增加细胞内caspase-3和caspase-9的水平,这些水平通过线粒体介导的途径引起细胞凋亡。值得注意的是,GLips-P / TP 3:1在HepG2细胞的细胞毒性测定和Heps异种移植ICR小鼠模型的治疗功效中均表现出显着的药物协同作用。这项工作不仅展示了用于精确肿瘤治疗的级联靶向递送的巨大前景,而且为使用单一药物设计联合治疗系统提供了一个新颖的平台。
更新日期:2020-04-20
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