Induction of Apoptosis through Oxidative Stress Caused by Rubus tereticaulis Leaves Extracts in A549 Cells

Year 2024, Volume: 83 Issue: 1, 50 - 59, 30.05.2024

Gamze Nur Öter , Ezgi Durmuş , Ali Şen , Abdurrahim Koçyiğit

https://doi.org/10.26650/EurJBiol.2024.1353842

Abstract

Objective: Plants have been used for medicinal purposes since the beginning of human history and form the basis of modern medicine, and they are also the source of most chemotherapeutic drugs for cancer treatment. This study aims to investigate for the first time the cytotoxic and apoptotic effects of the active ethanol (RTE) and chloroform (RTC) extracts of Rubus tereticaulis leaves in the A549 non-small-cell lung cancer cell line.
Materials and Methods: A549 cells were treated with RTE and RTC individually. The MTT assay was used to quantitatively detect RTE and RTC’s cytotoxic effects. The fluorescent signal indicator H2DCF-DA was used to detect cellular reactive oxygen species (ROS) production. Apoptosis was evaluated by fluorescence microscope after acridine orange/ethidium bromide fluorescent staining, annexin V-FITC and immunoblotting analyses, immunofluorescence, and imaging.
Results: Both RTE and RTC induced cytotoxicity in A549 cells in a dose-dependently, which was accompanied with induced ROS accumulation. Both early and late apoptotic cells detected by flow cytometry were increased in the RTE- and RTC-treated cells. In addition, the results show RTC to have higher cytotoxic and apoptotic effects and increased ROS-generation capacity than RTE. Therefore, the polarity of the solvent used to exert the anticancer effect of R. tereticaulis leaves is crucial.
Conclusion: This is the first anti-cancer activity study on R. tereticaulis. The results suggest R. tereticaulis leaves to have an anti-cancer effect on lung cancer cells through ROS-mediated apoptosis and RTC to be an effective therapeutic/adjuvant strategy in cancer treatment.

Keywords

Lung cancer, anti-cancer effect, oxidative stress, Rubus tereticaulis, apoptosis

Thanks

The authors would like to thank Dr. Ahmet Doğan for his help in identification of the plant material.

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