Thymoquinone synergistically potentiates temozolomide cytotoxicity through the inhibition of autophagy in U۸۷MG cell line

Publish Year: 1395
نوع سند: مقاله ژورنالی
زبان: English
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شناسه ملی سند علمی:

JR_IJBMS-19-8_012

تاریخ نمایه سازی: 30 مهر 1400

Abstract:

Objective(s): Glioblastoma multiforme (GBM) is one of the most lethal forms of human cancer and temozolomide (TMZ) is currently part of the standard treatment for this disease. Combination therapy using natural substances can enhance the anti-cancer activity of TMZ. The purpose of this study was to evaluate the effect of TMZ in combination with thymoquinone (TQ) on human GBM cell line (U۸۷MG). Materials and Methods: The cell line was treated with TMZ and/or TQ. Cell viability was assessed using trypan blue and MTT assay. The effect of TMZ and/or TQ on colony-forming ability of the cells was investigated. Apoptosis and autophagy were quantified by fluorescent dye staining. The expression level of two autophagy related genes (ATG) were assessed using RT-PCR. Furthermore, nitric oxide (NO) production was detected by Griess reaction. Results: After treatment with TMZ and/or TQ, the cell viability was reduced in a time- and dose-dependent manner, and the cell survival fraction (SF) was significantly decreased (P=۰.۰۰۰). Apoptosis index of U۸۷MG cells was also significantly increased (P=۰.۰۰۰). Autophagy was significantly increased by TMZ (P=۰.۰۰۰) and decreased by TQ (P=۰.۰۱۸). Also TMZ and/or TQ significantly decreased NO production by U۸۷MG cell (P=۰.۰۰۰). Conclusion: TQ enhanced the anti-cancer activity of TMZ by inhibition of autophagy at the transcriptional level and decreased the colony-forming ability and NO production of U۸۷MG cell line.

Authors

Mona Pazhouhi

Department of Biology, Faculty of Sciences, University of Guilan, Rasht, Iran

Reyhaneh Sariri

Department of Biology, Faculty of Sciences, University of Guilan, Rasht, Iran

Arezou Rabzia

Fertility and Infertility Research Center, Kermanshah University of Medical Sciences, Kermanshah, Iran

Mozafar Khazaei

Fertility and Infertility Research Center, Kermanshah University of Medical Sciences, Kermanshah, Iran

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