组蛋白去乙酰化酶抑制剂对肝癌诱导自噬的作用

来源期刊：广州医药 | 39-43 发布时间：2022-04-12 收稿时间：2025/11/13 18:23:55 阅读量：18

作者：: 庄薇,

钟宁,

关键词：: 肝癌曲古霉素凋亡自噬; hepatocellular carcinoma hachimycin apoptosis autophagy

DOI：: 10.3969/j.issn.1000-8535.2022.02.009

收稿时间：: 2021-06-01
修订日期：
接收日期：
引用总数：: 0

目的探讨组蛋白去乙酰化酶抑制剂曲古霉素对肝癌细胞增殖凋亡是否存在影响,及该抑制作用是否与自噬相关。方法采用MTT法检测不同浓度曲古霉素作用于肝癌HepG2细胞24 h、48 h、72 h以后肝癌细胞的增殖能力;使用流式细胞术检测不同浓度曲古霉素对HepG2肝癌细胞周期及凋亡的影响;蛋白印迹法(Western blot, WB)检测不同浓度曲古霉素对肝癌HepG2细胞中Beclin1和Bcl-2蛋白的表达;实时荧光定量 PCR(Real-time PCR, RT-PCR)检测不同浓度曲古霉素对肝癌HepG2细胞中Beclin1和Bcl-2 mRNA的表达。结果曲古霉素对肝癌HepG2细胞具有增殖抑制作用,与对照组相比较,其差异有统计学意义(P＜0.05);通过流式细胞术检测结果显示,曲古霉素作用于肝癌HepG2细胞后,随着浓度的增加,细胞凋亡率显著上升,与对照组相比,差异有统计学意义(P＜0.05);RT-PCR及WB实验观察到,Beclin1蛋白和mMRA的表达随着曲古霉素浓度的增加而逐渐升高,Bcl-2蛋白和mMRA的表达随着曲古霉素作用浓度的增加而逐渐降低,且与对照组相比,其差异均有统计学意义(P＜0.05)。结论曲古霉素能抑制肝癌细胞的增殖,而且这种作用机制与诱导肝癌细胞凋亡和自噬作用有相关性。

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