作者：Zhou, X; Zheng, Q; Wang, C ; Xu, J; Wu, J; Kirk, T.B.; Ma, D; Xue, W
关键字：Tumor therapy, Co-delivery, Star-shaped copolymer, Hyperbranched polyglycerol, Poly(L-lysine) dendrimer
论文来源：期刊
具体来源：ACS Applied Materials & Interfaces
发表时间：2016年

The drug/gene co-delivery is a promising strategy for cancer treatment. Herein, to realize the co-delivery of docetaxel and MMP-9 siRNA plasmid efficiently into tumor cells, a star-shaped amphiphilic copolymer consisting of hyperbranched polyglycerol derivative (HPG-C18) and dendritic poly(L-lysine) (PLLD) was synthesized by the click reaction between azido-modified HPG-C18 and propargyl focal point PLLD. The obtained HPG-C18-PLLD could form the nanocomplexes with docetaxel and MMP-9, and the complexes showed good gene delivery ability in vitro by inducing an obvious decrease in MMP-9 protein expression in MCF-7 cells. The apoptosis assay showed that the complex could induce a more significant apoptosis to breast cancer cells than that of DOC or MMP-9 used alone. In vivo assay indicated that the co-delivery strategy displayed a better effect on tumor inhibition. Moreover, HPG-C18-PLLD displayed lower toxicity as well as better blood compatibility compared to PEI-25k, which may be the result of that HPG-C18-PLLD showed the comparative MMP-9 delivery ability in vivo compared with PEI-25k even if it showed the slight lower transfection efficiency in vitro. Therefore, HPG-C18-PLLD is a safe and effective carrier for the co-delivery of drug/gene, which should be encouraged in tumor therapy.