Abstract
Quercetin, the plant-derived phenolic compounds, plays a pivotal role in controlling hemostasis, by having potent antioxidant and free-radical scavenging properties. This flavonoid in combination with chemotherapeutic drugs improves the efficacy of these agents in induction of apoptosis in cancer cells. This study investigated the role of nano-quercetin (phytosome) in doxorubicin-induced apoptosis. Nanoparticles were characterized for particle size, zeta potential, scanning electron microscopy (SEM) and differential scanning calorimetric assessments. Anti-proliferative effect of formulations was evaluated by MTT assay. mRNA expression levels of target genes were measured by real time RT-PCR. The mean size of nanoparticles was 85 ± 2 nm with nearly narrow size distribution which was confirmed by SEM analysis. Our results showed that co-treatment of MCF-7 breast cancer cells with nano-quercetin and doxorubicin increased the percentage of apoptosis from 40.11 ± 7.72–58 ± 7.13 (p < 0.05). Furthermore, mRNA expression levels for downstream genes including NQO1 and MRP1 showed a marked decrease (p < 0.05). Taken together, our results suggest that phytosome technology can elevate the efficacy of chemotherapeutics by increasing the permeability of tumor cells to chemical agents. Our findings introduce a novel phytosome-dependent strategy to improve delivery of doxorubicin to the breast cancerous tissues.
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Acknowledgments
We are sincerely grateful to Prof.Dastmalchi for providing the necessary structure for successful accomplishment of this research. This work was financially supported by the grant from Biotechnology Research Center, Tabriz University of Medical Sciences.
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Minaei, A., Sabzichi, M., Ramezani, F. et al. Co-delivery with nano-quercetin enhances doxorubicin-mediated cytotoxicity against MCF-7 cells. Mol Biol Rep 43, 99–105 (2016). https://doi.org/10.1007/s11033-016-3942-x
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DOI: https://doi.org/10.1007/s11033-016-3942-x