Tumor targeting delivery system has been suggested as an attractive strategy against tumor progression. Combination chemotherapy is essential and effective in preventing ovarian cancer. Rhein (4, 5-dihydroxyanthraquinone-2-carboxylic acid) is a lipophilic anthraquinone. Emerging evidence indicates that rhein has many pharmacological effects, such as nephroprotective, hepatoprotective, anti-inﬂammatory, antioxidant, and anticancer activities. In our study, doxorubicin (DOX) and rhein (RHE) co-loaded polymeric micelle (nano-DOX/RHE) were prepared to attenuate drug resistance in ovarian cancer cells while promoting the therapeutic efficiency of DOX. The morphology, particle size (about 25 nm), zeta potential, release profile in vitro, cell proliferation and cytotoxicity effects were calculated. The results suggested that DOX and RHE could be efficiently loaded into micelle nanoparticles, and in vitro study indicated that they could be released from the nanoparticles in an extended period into DOX-resistant SKOV3 cells (SKOV3/DOX). Nano-DOX/RHE exerted an enhanced cytotoxicity and high apoptosis-inducing activities in SKOV3/DOX cells. Importantly, nano-DOX/RHE exhibited better cancer targeting ability, enhancing the anti-tumor efficacy with little toxicity. In conclusion, nano-DOX/RHE promoted the drug target on tumor site with preferable anti-tumor effects, which could be a promising therapeutic strategy against human ovarian cancer.
Biochemical and Biophysical Research Communications – Elsevier
Published: Mar 25, 2018
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