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REVIEW ARTICLE
Year : 2016  |  Volume : 7  |  Issue : 3  |  Page : 71-78

Ellagic acid radiosensitizes tumor cells by evoking apoptotic pathway


1 Centre for Cellular and Molecular Biology, Deakin University, Melbourne, Australia
2 Foundation for Education and Research, India and BM International Research Centre, Mumbai, Maharashtra, India

Correspondence Address:
K P Mishra
Foundation for Education and Research, India and BM International Research Centre, Mumbai, Maharashtra
India
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/0973-0168.197973

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Cancer causes millions of deaths each year globally. In most patients, the cause of treatment failure is found associated with the resistance to chemotherapy and radiotherapy. The development of tumor cell resistance evokes multiple intracellular molecular pathways. In addition, the limitation in treatment outcome arises due to unintended cytotoxic effects of the synthetic anticancer drugs to normal cells and tissues. Considerable focus of research is, therefore, devoted to examine plant-based herbal compounds which may prove potential anticancer drug for developing effective cancer therapy. Research results from our laboratory have shown that ellagic acid (EA), a natural flavonoid displays enhanced tumor toxicity in combination with gamma radiation to many types of cancers in vitro as well as in vivo. Studies on the underlying mechanisms of toxicity suggest that EA employs the cellular signaling pathways in producing the observed effects. This paper gives an account of molecular mechanisms of EA-induced apoptosis process in tumor cytotoxicity. It is suggested that EA acts as a novel radiosensitizer for tumors and a radioprotector for normal cells which may offer a novel protocol for cancer treatment.


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