Abstract

Multidrug resistance (MDR) and drug toxicity are two major factors responsible for the failure of cancer chemotherapy. Herein the efficacy and safety of combination therapy using doxorubicin (Dox, D)–mitomycin C (MMC, M) co-loaded stealth polymer-lipid hybrid nanoparticles (DMsPLNs) were evaluated in sensitive and MDR human mammary tumor xenografts. DMsPLN demonstrated enhanced efficacy compared to liposomal Dox (PLD) with up to a 3-fold increase in animal life span, a 10–20% tumor cure rate, undetectable normal tissue toxicity and decreased tumor angiogenesis. These results suggest DMsPLN have potential as an effective treatment of breast cancer.

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