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Investigation of the anti-cancer effects of free and PLGA-PAA encapsulated Hydroxytyrosol on the MCF-7 breast cancer cell line

Purpose: Breast cancer is the most frequent cancer among women and the most important cause of death. Surgery and chemotherapy are the common treatment of the breast cancer, but increasing drug resistance has created many challenges in its treatment. The present study aimed to investigate the anti-cancer function of free and nano-encapsulated hydroxytyrosol on the MCF-7 breast cancer cell line.

Methods: The poly lactide-co-glycolide-co-polyacrylic acid (PLGA-co-PAA) nano-encapsulated Hydroxytyrosol was synthesized, and the MTT assay was performed to evaluate the anti-proliferative and anti-tumor effects of both free and nanoencapsulated Hydroxytyrosol. After the extraction of RNA from the treated and control cancer cells, cDNA synthesis was performed and the expression of P21, P27, and Cyclin D1 genes were evaluated by Real-Time PCR.

Results: The results of the study showed that free (12 ppm and 72 hours) and nano-encapsulate (10 ppm and 24 hours) hydroxytyrosol resulted in 50% death (IC50) of the cancer cells and increased by increasing the concentration and time. Also, free and nano-encapsulated hydroxytyrosol increased the expression of P21 and P27 genes and reduced the expression of Cyclin D1 in breast cancer cells. In general, the nano-encapsulated hydroxytyrosol showed more anticancer function than the free hydroxytyrosol.

Conclusion: The present study illustrated that the hydroxytyrosol could lead to the cell death in MCF-7 breast cancer by regulating the cell cycle. Also, the nano-encapsulation of Hydroxytyrosol enhanced the Hydroxytyrosol anticancer function by PLGA-co-PAA. However, for more accurate results, further studies on animal models are necessary.

Journal Title: Current Molecular Medicine

Price: $95

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