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  • Title: Telomerase-associated apoptotic events by mushroom ganoderma lucidum on premalignant human urothelial cells.
    Author: Yuen JW, Gohel MD, Au DW.
    Journal: Nutr Cancer; 2008; 60(1):109-19. PubMed ID: 18444142.
    Abstract:
    The chemopreventive effects of Ganoderma lucidum was tested, using a tumorigenic transformable human urothelial cell (HUC-PC) model. These in vitro data show that G. lucidum can inhibit the viability and growth of HUC-PC. This could be explained by a concomitant induction of apoptosis and inhibition of telomerase activity. Significant exteriorization of phosphatidylserine was detected by Annexin-V on cell surface, and the cells subsequently lost membrane integrity for uptake of 7-amino-actinomycin D dye. Additionally, the levels of hydrogen peroxide and 8-hydroxy-2'-deoxyguanosine (8-OHdG) production of the apoptotic cells were significantly increased. The induction of apoptosis and suppression of telomerase activity help to explain the anti-HUC-PC growth properties; however, the induction of oxidative stress requires further study. This study strongly suggests that G. lucidum is a potential source of chemopreventive agents for bladder cancer based on its effectiveness in controlling the premalignant urothelial cell growth and carcinogen-induced transformation.
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