ZBP-89 reduces the cell death threshold in hepatocellular carcinoma cells by increasing caspase-6 and S phase cell cycle arrest.

ZBP-89 reduces the cell death threshold in hepatocellular carcinoma cells by increasing caspase-6 and S phase cell cycle arrest.
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DOI:
10.1016/j.canlet.2009.03.024
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发表时间:
2009-09-28
期刊:
影响因子:
9.7
通讯作者:
Lai, Paul B. S.
Lai, Paul B. S.
中科院分区:
医学1区
文献类型:
--
作者:
Chen, George G.;Chan, Ursula P. F.;Bai, Long-Chuan;Fung, King Yip;Tessier, Art;To, Ann K. Y.;Merchant, Juanita L.;Lai, Paul B. S.

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ZBP-89对部分肿瘤细胞有抑制作用,但在HCC中的作用尚不清楚。我们研究了ZBP-89对5种不同p53状态的肝癌细胞株细胞死亡的影响。我们发现ZBP-89显著诱导所有HCC细胞死亡,尤其是野生型p53细胞。抑制作用与诱导caspase-6活性密切相关。caspase-6的抑制消除了ZBP-89的作用。ZBP-89使G2-M期细胞减少,S期细胞增加。ZBP-89随着caspase-6和细胞周期的变化,大大增强了5-氟尿嘧啶或staurosporine对HCC细胞的杀伤效果。
ZBP-89 inhibits the some tumor cells but its role in HCC is unknown. We investigated effect of ZBP-89 on cell death of 5 HCC cell lines with different status of p53. We found that ZBP-89 significantly induced cell death of all HCC cells particularly those with wild-type p53. The inhibition was well correlated with the induction of caspase-6 activity. The inhibition of caspase-6 abolished the effect of ZBP-89. ZBP-89 reduced the cells in G2-M but increased them in S phase. With the changes in caspase-6 and cell cycle, ZBP-89 greatly enhanced the killing effectiveness of 5-fluorouracil or staurosporine in HCC cells.
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