Abstract
Aim: Ferulic acid, a well known dietary phenolic antioxidant, possesses diverse pharmacological and biochemical effects, including anti-inflammatory, hepatoprotective, antidiabetic and anticancer properties. The present study explores the cytotoxic potential of ferulic acid using Hep-2 cell line by analyzing its effect on cell viability, reactive oxygen species generation, apoptotic induction, nuclear damage, DNA fragmentation and expression of apoptosis related proteins. Materials and Methods: The effect of ferulic acid (2.5, 5, 10, 20 and 40 μg/ml) on Hep-2 cells viability for 24 hr was determined by MTT assay. To substantiate the cytotoxic effect of ferulic acid, the intracellular ROS level was determined using DCFH-DA assay; apoptosis by dual staining; nuclear damage by DAPI staining; DNA fragmentation by using agarose gel electrophoresis; apoptosis related proteins by western blotting. Results: Ferulic acid significantly inhibited the Hep-2 cell growth in a dose dependent manner and ferulic acid treated Hep-2 cells exhibited features of apoptosis and increase in nuclear damage and DNA fragmentation. We also observed excess reactive oxygen species generation in ferulic acid Original Research Article Prabhakar et al.; BJMMR, 5(5): 612-621, 2015; Article no.BJMMR.2015.065 613 treated Hep-2 cells. Apoptosis related proteins (p53, Bcl-2, Bax, Caspase 3 & Caspase 9) were significantly modulated in favour of programmed cell death in ferulic acid treated cells. Conclusion: We thus conclude that the cytotoxic potential of ferulic acid might be due to its role in apoptosis induction, excessive ROS generation and DNA fragmentation in Hep-2 cells.
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