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RGD(Arg-Gly-Asp) internalized docetaxel-loaded pH sensitive liposomes: Preparation, characterization and antitumor efficacy in vivo and in vitro.
Colloids and Surfaces. B, Biointerfaces 2016 November 2
The goal of this research was to formulate dual-targeting liposomes (RGD/DTX-PSL) that can selectively release loaded contents in a low pH level environment and to actively target to the tumor using liposomes that had surface arginine-glycine-aspartic (RGD) tripeptides. We investigated whether RGD/DTX-PSL could serve as an effective tumor-targeted nanoparticle that is capable of suppressing tumor growth. The results suggest that DTX is released from liposomes faster at pH 5.0 than pH 7.4, demonstrating their pH sensitivity. RGD/DTX-PSL has a longer blood circulation than Duopafei(®) in rats. The RGD/DTX-PSL formulation displayed stronger antiproliferative effects than DTX alone and the strongest inhibition of tumor growth of the formulations tested, thus expanding therapeutic window of DTX. In conclusion, we established a novel, promising and easy-to-handle liposome formulation that has a considerable antitumor activity in vitro and in vivo. This study provides important prerequisite for the clinical application of dual-targeting liposomes in delivering therapies.
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