Docetaxel prodrug self-assembled nanosystem: Synthesis, formulation and cytotoxicity.

Conventional drug delivery systems of docetaxel (DTX) are challenged with low drug loading efficiency and potential carriers-induced toxicity. In this work, a docetaxel prodrug self-assembled nanosystem was designed and synthesized by conjugating docetaxel with oleic acid (OA) exploring a thioether as the linker, which is redox-sensitive to the redox environment within tumor cells. Notably, the carrier-free nanomedicine which does not need any carrier has obviously high drug loading that reaches 58%. Moreover, the cytotoxicity of DTX-S-OA maintains an equal level with DTX. The novel prodrug conjugate therefore has a promising perspective as carrier-free nanomedicine for cancer therapy due to its high drug loading property, redox-sensitive release and long circulation mechanism.