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Journal of Clinical and Experimental Investigations is licenced under the terms of Creative Commons Attribution-Non Commercial4.0 International (CC BY-NC 4.0) License.
Abstract - Total Phenolic Content, Antioxidant and Cyto-/Genotoxic Activities of Pelargonium Quercetorum Agnew in Human Breast Cancer Cells
Ferda Arı, Serap Celikler, Didem Karakas, Buse Cevatemre, Mehmet Fırat, Engin Ulukaya
Objective: Because the current cancer treatment success rate is not sufficient, plants have been gaining importance
as a possible source for anti-cancer compounds. This study aimed to investigate both the genotoxic and cytotoxic
activities of methanol extracts of Pelargonium quercetorum Agnew (P. quercetorum), which is traditionally used for its
antihelminthic activity, but has not yet been studied for its effect in breast cancer cells.
Methods: In this study, the cyto-genotoxic activities of methanol extracts of Pelargonium quercetorum were
investigated in human breast cancer cells (MCF-7 and MDA-MB-231). The cytotoxic effect of the extract on these cells
was evaluated by MTT and ATP viability assays. The mode of cell death (apoptosis/necrosis) was determined using
fluorescence microscopy and biochemical methods. Genotoxic activity was studied with Comet assay. In addition, the
total phenolic content and antioxidant capacity were determined by the Folin-Ciocalteu and ABTS [2,2'-azino-bis(3-
ethylbenzothiazoline-6-sulphonic acid)] methods, respectively.
Results: Results of this study reveal that Pelargonium quercetorum has a large total phenolic content and high
antioxidant capacity. Pelargonium quercetorum induced anti-growth effects in a dose-dependent manner in cancer
cells. The extract killed the cells by apoptosis as evidenced by the presence of pyknotic nucleus and annexin V-FITC
positivity. The extract also exerted genotoxic activity at relatively low doses.
Conclusion: These results suggest that Pelargonium quercetorum induces apoptosis-like cell death by causing DNA
damage in breast cancer cells.
 
Key words: Pelargonium quercetorum, apoptosis, breast cancer cells, DNA damage.
Volume 08, Number 01 (2017)