Droxinostat sensitizes human colon cancer cells to apoptotic cell death via induction of oxidative stress.

Droxinostat sensitizes human colon cancer cells to apoptotic cell death via induction of oxidative stress.
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Droxinostat 通过诱导氧化应激使人结肠癌细胞对细胞凋亡敏感

DOI:
10.1186/s11658-018-0101-5
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发表时间:
2018
影响因子:
8.3
通讯作者:
Kuang B
Kuang B
中科院分区:
生物学1区
文献类型:
--
作者:
Huang Y;Yang W;Zeng H;Hu C;Zhang Y;Ding N;Fan G;Shao L;Kuang B

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组蛋白乙酰化的上调在转录失调中起着关键作用。它会改变染色质的结构,从而导致癌症的发生。因此,组蛋白去乙酰酶抑制剂可能是一种很有希望的方法来限制癌症的进展。在这项研究中,我们检测了屈昔司坦对HT-29结肠癌细胞生长的影响。我们的结果表明,屈克力坦通过诱导HT-29细胞凋亡和ROS的产生,有效地抑制了细胞的生长和克隆形成能力。值得注意的是,细胞凋亡抑制剂Z-VAD-FMK显著降低了细胞的凋亡率,抗氧化剂γ-生育三烯醇显著减少了由屈克力坦诱导的ROS的产生。Z-VAD-FMK和GT3也部分逆转了屈克司他对HT-29细胞的负面生长效应。给药后,GT3处理组细胞凋亡率减少,集落形成能力增强。Z-VAD-FMK处理也部分降低了羟乙基诺酯诱导的ROS的产生。我们的研究结果表明,屈力索坦对结肠癌细胞的作用是通过诱导氧化应激和细胞凋亡来实现的。
Upregulation of histone acetylation plays a critical role in the dysregulation of transcription. It alters the structure of chromatin, which leads to the onset of cancer. Histone deacetylase inhibitors may therefore be a promising way to limit cancer progression. In this study, we examined the effects of droxinostat on the growth of HT-29 colon cancer cells. Our results show that droxinostat effectively inhibited cell growth and colony-forming ability by inducing cellular apoptosis and ROS production in HT-29 cells. Notably, the apoptotic inhibitor Z-VAD-FMK significantly decreased the levels of cellular apoptosis and the antioxidant γ-tocotrienol (GT3) significantly decreased ROS production induced by droxinostat treatment. Z-VAD-FMK and GT3 also partially reversed the negative growth effects of droxinstat on HT-29 cells. GT3 treatment decreased cellular apoptosis and increased colony-forming ability upon droxinostat administration. Z-VAD-FMK treatment also partially decreased droxinostat-induced ROS production. Our findings suggest that the effects of droxinostat on colon cancer cells are mediated by the induction of oxidative stress and apoptotic cell death.
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