Intracellular Self-Assembly of Taxol Nanoparticles for Overcoming Multidrug Resistance.

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Intracellular Self-Assembly of Taxol Nanoparticles for Overcoming Multidrug Resistance.

Angew Chem Int Ed Engl. 2015 Jun 26;

Authors: Yuan Y, Wang L, Du W, Ding Z, Zhang J, Han T, An L, Zhang H, Liang G

Abstract
Multidrug resistance (MDR) remains the biggest challenge in treating cancers. Herein we propose the intracellular self-assembly of nanodrugs as a new strategy for overcoming MDR. By employing a biocompatible condensation reaction, we rationally designed a taxol derivative Ac-Arg-Val-Arg-Arg-Cys(StBu)-Lys(taxol)-2-cyanobenzothiazole (CBT-Taxol) which could be subjected to furin-controlled condensation and self-assembly of taxol nanoparticles (Taxol-NPs). In vitro and in vivo studies indicated that, compared with taxol, CBT-Taxol showed a 4.5-fold or 1.5-fold increase in anti-MDR effects, respectively, on taxol-resistant HCT 116 cancer cells or tumors without being toxic to the cells or the mice. Our results demonstrate that structuring protease-susceptible agents and assembling them intracellularly into nanodrugs could be a new optimal strategy for overcoming MDR.

PMID: 26118539 [PubMed - as supplied by publisher]