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Diosmin reduces cell viability of A431 skin cancer cells through apoptotic induction

 Department of Biochemistry and Biotechnology, Annamalai University, Chidambaram, Tamil Nadu, India

Correspondence Address:
Shanmugam Manoharan,
Department of Biochemistry and Biotechnology, Annamalai University, Annamalainagar, Chidambaram - 608 002, Tamil Nadu
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Source of Support: None, Conflict of Interest: None

Objectives: Aim of the present study was to evaluate the in vitro cytotoxic potential of the diosmin in A431 skin cancer cells. Materials and Methods: The cytotoxic (anti-cell proliferative) potential of diosmin in A431 cells was assessed using 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay (cell viability), dual staining (apoptotic induction), dichloro-dihydro-fluorescein diacetate assay (reactive oxygen species [ROS] generation), DNA fragmentation study, Western blotting analysis (apoptotic markers expression) and flow cytometry (cell cycle arrest). Results: Diosmin reduced the cell viability of A431 cells in a dose-dependent fashion and the inhibitory concentration 50% value was attained at 45 μg/ml using MTT assay. Diosmin at a concentration of 45 μg/ml generated excessive ROS in A431 cells, as compared to untreated cells. Diosmin treated A431 cells also revealed multiple DNA fragments than the untreated cells. Diosmin upregulated the expression of p [53], caspases 3 and 9 and downregulated the expression of Bcl-2, matrix metalloproteinases-2 and 9 in A431 cells. Conclusion: The cytotoxic or anti-cell proliferative potential of diosmin is due to its ROS-mediated apoptotic induction potential, as well as due to its role in the inhibition of invasion in the A431 cells.

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