18β-Glycyrrhetinic-acid-mediated unfolded protein response induces autophagy and apoptosis in hepatocellular carcinoma.

18β-Glycyrrhetinic-acid-mediated unfolded protein response induces autophagy and apoptosis in hepatocellular carcinoma.
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18β-糖酸酸介导的展开的蛋白质反应在肝细胞癌中诱导自噬和凋亡。

DOI:
10.1038/s41598-018-27142-5
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发表时间:
2018-06-19
期刊:
影响因子:
4.6
通讯作者:
Chen XP
Chen XP
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Chen J;Zhang ZQ;Song J;Liu QM;Wang C;Huang Z;Chu L;Liang HF;Zhang BX;Chen XP

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18β-甘草次酸(GA)是中药甘草的活性成分。在这里,我们探讨了 GA 在体外和体内对肝细胞癌 (HCC) 的影响及其潜在的分子机制。我们证实 GA 抑制各种 HCC 细胞系的增殖。 GA 治疗导致 HCC 细胞 G0/G1 期停滞、细胞凋亡和自噬。 GA 诱导的细胞凋亡和自噬主要是由于未折叠的蛋白反应。我们比较了 ATF4/CHOP 和 IRE1α/XBP1s UPR 途径的作用,这两种途径均由 GA 诱导。 ATF4/CHOP 级联诱导自噬,并且对于诱导 GA 处理的 HCC 细胞凋亡至关重要。相反,IRE1α/XBP1s 级联保护 HCC 细胞免受 GA 诱导的体外和体内凋亡。尽管如此,自噬的激活可以保护 HCC 细胞免受 GA 诱导的细胞凋亡。我们得出结论,自噬或IRE1α的药理抑制可能有利于增强GA的抗肿瘤活性。
18β-Glycyrrhetinic acid (GA) is the active ingredient of the traditional Chinese medicine, Glycyrrhrzae Radix et Rhizoma. Here, we explored the effects of GA on hepatocellular carcinoma (HCC) in vitro and in vivo and the underlying molecular mechanisms. We confirmed that GA suppressed proliferation of various HCC cell lines. Treatment of GA caused G0/G1 arrest, apoptosis and autophagy in HCC cells. GA-induced apoptosis and autophagy were mainly due to the unfolded protein response. We compared the roles of the ATF4/CHOP and IRE1α/XBP1s UPR pathways, which were both induced by GA. The ATF4/CHOP cascade induced autophagy and was indispensable for the induction of apoptosis in GA-treated HCC cells. In contrast, the IRE1α/XBP1s cascade protected HCC cells from apoptosis in vitro and in vivo induced by GA. Despite this, activation of autophagy protected HCC cells from apoptosis induced by GA. We concluded that pharmacological inhibition of autophagy or IRE1α may be of benefit to enhance the antitumor activity of GA.
姜黄素类似物 L48H37 通过 ROS 介导的内质网应激和 STAT3 途径诱导人肺癌细胞凋亡
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发表时间: 2017-07-01
影响因子: 4.6
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发表时间: 2012-01-15
期刊: Cancer research
影响因子: 11.2
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发表时间: 2014-02
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影响因子: --
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