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    標題: 5-epi-Sinuleptolide induces cell cycle arrest and apoptosis through tumor necrosis factor/mitochondria-mediated caspase signaling pathway in human skin cancer cells
    作者: Liang, Chia-Hua
    Wang, Guey-Horng
    Chou, Tzung-Han
    Wang, Shih-Hao
    Lin, Rong-Jyh
    Chan, Leong-Perng
    So, Edmund Cheung
    Sheu, Jyh-Horng
    貢獻者: 化妝品應用與管理系
    關鍵字: 5-Epi-Sinuleptolide
    Sinuleptolide
    Skin Cancer
    Death Receptor
    Mitochondria Death Pathway
    日期: 2012-07
    上傳時間: 2014-03-21 16:15:28 (UTC+8)
    出版者: Elsevier Science Bv
    摘要: Background: Skin cancers are reportedly increasing worldwide. Developing novel anti-skin cancer drugs with minimal side effects is necessary to address this public health issue. Sinuleptolide has been demonstrated to possess anti-cancer cell activities; however, the mechanisms underlying the anti-skin cancer effects of 5-epi-sinuleptolide and sinuleptolide remain poorly understood.Methods: Apoptosis cell, cell-cycle-related regulatory factors, and mitochondria- and death receptor-dependent caspase pathway in 5-epi-sinuleptolide-induced cell apoptosis were examined using SCC25 cells.Results: 5-epi-Sinuleptolide inhibited human skin cancer cell growth more than did sinuleptolide. Treatment of SCC25 cells with 5-epi-sinuleptolide increased apoptotic body formation, and induced cell-cycle arrest during the G(2)/M phase. Notably, 5-epi-sinuleptolide up-regulated p53 and p21 expression and inhibited G(2)/M phase regulators of cyclin B1 and cyclin-dependent kinease 1 (CDK1) in SCC25 cells. Additionally, 5-epi-sinuleptolide induced apoptosis by mitochondria-mediated cytochrome c and Bax up-expression, down-regulated Bcl-2, and activated caspase-9 and -3. 5-epi-Sinuleptolide also up-regulated tBid, which is associated with up-regulation of tumor necrosis factor-alpha (TNF-alpha) and Fas ligand (FasL) and their cognate receptors (i.e., TNF-R1, TNF-R2 and Fas), downstream adaptor TNF-R1-associated death domain (TRADD) and Fas-associated death domain (FADD), and activated caspase-8 in SCC25 cells.Conclusions: The analytical results indicate that the death receptor- and mitochondria-mediated caspase pathway is critical in 5-epi-sinuleptolide-induced apoptosis of skin cancer cells.General significance: This is the first report suggesting that the apoptosis mediates the anti-tumor effect of 5-epi-sinuleptolide. The results of this study might provide useful suggestions for designing of antitumor drugs for skin cancer patients. (C) 2012 Elsevier B.V. All rights reserved.
    關聯: Biochimica Et Biophysica Acta-General Subjects, 1820(7), 1149-1157
    顯示於類別:[化妝品應用與管理系(所)] 期刊論文

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