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    Title: Antrodia camphorata induces G1 cell-cycle arrest in human promyelocytic leukemia;HL-60) cells and suppresses tumor growth in athymic nude mice
    Authors: 張竣維;Hebron, C.Chang
    Contributors: 生物科技學系
    Date: 2014
    Issue Date: 2014-07-03 15:44:52 (UTC+8)
    Abstract: Antrodia camphorata is a well-known medicinal mushroom in Taiwan. The broth from a fermented culture of Antrodia camphorata (AC) has been shown to induce apoptosis in cultured human premyelocytic leukemia (HL-60) cells. In the present study, we examined the effects of AC on cell cycle arrest in vitro in HL-60 cells and on tumor regression in vivo using an athymic nude mouse model. We found that AC (20-80 μg mL(-1)) treatment significantly induced G1 cell-cycle arrest in HL-60 cells by reducing the levels of cyclin D1, CDK4, cyclin E, CDK2, cyclin A, and phosphorylation of retinoblastoma protein (p-Rb). Moreover, AC treatment led to significantly increased protein expression levels of CDK inhibitors, including p21(WAF1) and p15(NIK4B). Additionally, AC treatment markedly induced intracellular ROS generation and mitochondrial dysfunction in HL-60 cells. Furthermore, the in vivo study results revealed that AC treatment was effective in terms of delaying the tumor incidence in nude mice that had been inoculated with HL-60 cells as well as in reducing the tumor burden. Histological analysis confirmed that AC treatment significantly modulated the xenografted tumor progression as demonstrated by a reduction in mitotic cells. Our data strongly suggest that Antrodia camphorata could be an anti-cancer agent for human leukemia.
    Appears in Collections:[Department of Biotechnology] Journal Article

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