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Cytotoxic Effects of Auraptene Against a Human Malignant Glioblastoma Cell Line

Abstract

Objective: Glioblastoma multiforme (GBM) is the deadliest type of primary brain tumors, and the survival of patients is estimated to be only about one year. This study, for the first time, investigated the cytotoxic effects of auraptene on U87 GBM cell line.

Materials And Methods: The cellular toxicity was measured by the MTT assay following 24 and 48-hr treatment with different concentrations of auraptene (0-400μg/ml). Apoptosis was evaluated by sub-G1 peak in cell cycle analysis of propidium-iodide- stained nuclei. Moreover, to determine the Ba, , , , , and genes expression, we used real-time polymerase chain reaction (RT-PCR).

Results: The results revealed that auraptene reduced the viability of U87 cells concentration- and time-dependently with IC values of 108.9 and 79.17μg/ml obtained for 24 and 48-hr treatments, respectively. Also, sub-G1 population was significantly increased following 24 (p<0.05 and p<0.001) and 48 (p<0.001) hours of treatment. The quantitative real-time RT-PCR showed an up-regulation in , , , and but a down-regulation in and genes expression.

Conclusion: This study showed that auraptene triggered apoptosis probably through Bax/Bcl-2 regulation, blocked cell cycle progression and inhibited proliferation in U87 GBM cells. Taken together, auraptene can be utilized as an effective natural medicine against GBM, after complementary studies.

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