Diblock- and triblock-copolymer based mixed micelles with high tumor penetration in vitro and in vivo.

ABSTRACT

A series of self-assembled mixed micelles composed of TPGS and Pluronics were fabricated and their cellular uptake and exocytosis behaviors were studied in 2D cell and 3D tumor spheroid models. Together with in vivo efficacy studies, our results demonstrate that TPGS is not only critical to stabilize the mixed micelle structure but also to improve drug loading and facilitate cell penetration and accumulation.