Journal
JOURNAL OF APPLIED BIOMEDICINE
Volume 19, Issue 1, Pages 40-47Publisher
UNIV SOUTH BOHEMIA
DOI: 10.32725/jab.2021.007
Keywords
Apoptosis; Cytotoxicity; ROS; Survivin
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The study demonstrated that ethyl acetate C. excavata leaf extract exhibits cytotoxic effects on the non-small lung cancer cell line NCI-H460, inducing apoptosis and increasing ROS production. Through modulation of apoptotic gene expressions, it reveals the potential of EACE as an anti-lung cancer agent.
Context: Clausena excavata Burm. f is a plant used in folklore medicine for the treatment of various ailments in South East Asia. The plant parts contain chemical components that are cytotoxic to many cancer cells. Objective: The study investigated the cytotoxic effects of ethyl acetate, methanol and chloroform C. excavata leaf extracts on the nonsmall-lung cancer, NCI-H460, cell line. Methods: Based on the 3-(4,5-dimethylthiazol-2-yl)-2,5,-diphenyltetrazolium bromide (MTT) assay, among extracts, ethyl acetate C. excavata leaf extract (EACE) was the most potent anti-NCI-H460 cells, with IC50 value of 47.1 +/- 6.1 mu g/ml. The effects of EACE on NCI-H460 cells were also determined by donogenic, 4', 6-diamidino-2-phenylindole (DAPI), and annexin-V-fluorescein isothiocyanate/propidium iodide-PI flow cytometric assays. Reactive oxygen species (ROS) production and apoptotic gene expressions was determined via flow cytometry and real-time quantitative PCR, respectively. Results: EACE-treated NCI-H460 cells after 48 h underwent apoptosis as evident by loss of cell viability, cell shrinkage, and chromatin condensation. The results also showed EACE mediated increase in ROS production by the NCI-H460 cells. After 48 h treatment, EACE increased the pro-apoptotic BAX and decreased the anti-apoptotic Bd-2, Survivin and c-Myc gene expressions. Conclusions: EACE is a potential anti-lung cancer by increasing cancer cell ROS production and apoptosis.
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