Farnesiferol A from Ferula persica and galbanic acid from Ferula szowitsiana inhibit P-glycoprotein-mediated rhodamine efflux in breast cancer cell lines |
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Authors: | Hanafi-Bojd Mohammad Yahya Iranshahi Mehrdad Mosaffa Fatemeh Tehrani Shahireh Omidvar Kalalinia Fatemeh Behravan Javad |
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Affiliation: | Biotechnology Research Center and School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran. |
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Abstract: | In multidrug resistance (MDR), cancer cells exposed to anticancer agents develop resistance to a wide variety of chemicals and chemotherapeutic agents. Sesquiterpene coumarins are reported to inhibit P-glycoprotein and/or increase cytotoxicity of anticancer drugs in P-gp-overexpressing cell lines. In the current study, we investigated the effects of galbanic acid (from the roots of Ferula szowitsiana) and farnesiferol A (from the roots of Ferula persica) on functionality of the drug transporter P-glycoprotein (P-gp) using a rhodamine 123 efflux assay in a doxorubicin resistant breast cancer cell line (MCF7/Adr). Compared to verapamil, the well-known inhibitor of P-gp, galbanic acid (5, 10, and 25 μg/mL), significantly inhibited the P-gp activity. In inhibition of the P-gp transporter, farnesiferol A (0.5?μg/mL) was more potent than verapamil at 15 min exposure. Our results indicate that the plant derived sesquiterpene coumarins, farnesiferol A and galbanic acid, may be promising candidates to be considered for further studies on the reversal of multidrug resistance phenotype in chemotherapy of cancer patients. |
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