Abstract
The aim of this study was to evaluate whether lycopene-loaded liposomes (L-LYC) could interfere with the antitumor efficacy and cardiotoxicity of doxorubicin (DOX). L-LYC were prepared by a thin-film hydration method to overcome the instability, insolubility, and low bioavailability of lycopene. The mean diameter and morphology of the liposomes were determined by dynamic light scattering and transmission electron microscopy, respectively, and then, in vitro cytotoxicity and in vivo antitumor activity were determined to evaluate the effects of L-LYC and their combination with DOX. Finally, we evaluated whether L-LYC could decrease the DOX-induced cardiotoxicity in vivo. The results showed that the particle size of L-LYC appeared uniform, and the average diameter was approximately 160.4 nm. Compared with DOX treatment alone, the combination of L-LYC and DOX showed significantly increased cytotoxicity in vitro and decreased the tumor size in B16 melanoma-bearing mice in vivo. Furthermore, the DOX-induced cardiotoxicity was clearly relieved in combination with L-LYC. The overall findings indicated that L-LYC have a great potential for improving the therapeutic efficacy and attenuating the cardiotoxicity of the chemotherapy drug DOX.
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