Effects of thymoquinone and etoposide combination on cell viability and genotoxicity in human cervical cancer hela cells

Yıl 2022, , 258 - 264, 30.12.2022

Hediye Gamze Nur Çelebioğlu , Merve Becit-kızılkaya , Aydan Çağlayan , Sevtap Aydın Dilsiz

https://doi.org/10.26650/IstanbulJPharm.2022.1105443

Öz

Background and Aims: It is thought that thymoquinone might have a crucial role in preventing DNA damage, regulating DNA repair mechanisms, and inhibiting the formation of a cancer. Studies on the cytotoxic and genotoxic effects of thymoquinone together with etoposide in cervical carcinoma cells (HeLa) are not adequate. The objective of this study is to evaluate the ef- fect of combinations with thymoquinone on etoposide cytotoxicity and genotoxicity in HeLa cells.
Methods: Cytotoxicity was evaluated by MTT assay and genotoxicity was determined by Comet assay.
Results: The IC50 values of thymoquinone were 233.6 μM and 145.5 μM, and the IC50 values of etoposide were 167.3 μM and 52.7 μM for 24 and 48 h, respectively. Thymoquinone significantly decreased the approximate IC50 value of etoposide in doses of 15.63 μM and above for 24 h and 31.5 μM and above for 48 h in a dose-dependent manner. 0.1-5 μM thymoquinone and 1 μM etoposide alone did not cause DNA damage, but at higher doses increased DNA damage significantly in a dose-dependent manner. Thymo- quinone significantly reduced DNA damage induced by 10 μM etoposide at the doses of 0.1-10 μM.
Conclusion: Our results show that thymoquinone might increase the cytotoxic and genotoxic effects of etoposide in HeLa cells at high doses and reduce DNA damage at low doses that are not cytotoxic, which suggests that etoposide may increase its anticancer effect at high doses, but comprehensive studies are needed on this subject. This study is a preliminary study and will contribute to the development of new treatment strategies.

Anahtar Kelimeler

Thymoquinone, etoposide, cytotoxicity, genotoxicity, comet assay, HeLa cells

Destekleyen Kurum

Hacettepe University Scientific Research Projects Coordination

Proje Numarası

THD-2021-19378

Kaynakça

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