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  • Title: Anticancer Activity and Molecular Mechanism of Polyphenol Rich Calophyllum inophyllum Fruit Extract in MCF-7 Breast Cancer Cells.
    Author: Shanmugapriya, Chen Y, Kanwar JR, Sasidharan S.
    Journal: Nutr Cancer; 2017; 69(8):1308-1324. PubMed ID: 29068745.
    Abstract:
    This study was conducted to investigate the anticancer effects and mechanism of Calophyllum inophyllum fruit extract against MCF-7 cells. C. inophyllum fruit extract was found to have markedly cytotoxic effect against MCF-7 cells in a dose-dependent manner with the IC50 for 24 h of 23.59 µg/mL. Flow cytometry analysis revealed that C. inophyllum fruit extract mediated cell cycle at G0/G1 and G2/M phases, and MCF-7 cells entered the early phase of apoptosis. The expression of anti-apoptotic proteins Bcl-2 was decreased whereas the expression of the pro-apoptotic protein Bax, cytochrome C and p53 were increased after treatment. C. inophyllum fruit extract led to apoptosis in MCF-7 cells via the mitochondrial pathway in a dose dependent manner. This is evidenced by the elevation of intracellular ROS, the loss of mitochondria membrane potential (Δψm), and activation of caspase-3. Meanwhile, dose-dependent genomic DNA fragmentation was observed after C. inophyllum fruits extract treatment by comet assay. This study shows that C. inophyllum fruits extract-induced apoptosis is primarily p53 dependent and mediated through the activation of caspase-3. C. inophyllum fruit extract could be an excellent source of chemopreventive agent in the treatment of breast cancer and has potential to be explored as green anticancer agent.
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