抑制组蛋白去乙酰酶1后对人胃癌干细胞的影响

目的：研究抑制组蛋白去乙酰化酶1（HDAC1）后对人胃癌干细胞（GCSGs）增殖、干性及侵袭作用的影响。方法以 CD44为胃癌干性标志物，流式分选出 GCSCs 。实时荧光定量核酸扩增检测（RT-qPCR）和蛋白免疫印迹法（Western blot）分别检测 GCSGs 与胃癌非干细胞中 HDAC1的表达量。组蛋白去乙酰化酶抑制剂处理 GCSCs 后，CCK-8法、克隆形成和 Transwell实验观察细胞增殖和侵袭的变化；RT-qPCR 和 Western blot 检测其对凋亡、侵袭相关蛋白及干性标志物表达的影响。结果HDAC1在 GCSCs 中的表达比胃癌非干细胞高。实验组细胞的增殖和侵袭能力相较于对照组均减弱，且下调干性标志物及介导上皮间质转化。结论抑制 HDAC1的去乙酰化作用后 GCSCs 的增殖、干性及侵袭能力降低。

Effection of HDAC1 deacetylase inhibition on gastric cancer stem cells

Objective To explore the effect of HDAC1 deacetylase inhibition on the proliferation differentiation and invasion in human gastric cancer stem cells (GCSCs) .Methods The GCSCs were selected as CD44 marker by using flow cytometry .RT-qPCR and Western Blot were used to detect the expression of HDAC 1 in GCSCs and non GCSCs .The effect of proliferation and in-vasion in GCSCs were observed by CCK-8 assay ,colony formation and transwell assay after the cells were treated with TSA .The expression of proteins related apoptosis ,differentiation and invasion were detected by using RT-qPCR and Western blot .Results The expression of HDAC1 in GCSCs was higher than that in non GCSCs .The capacities of proliferation and invasion in experimen-tal group were attenuated compared to the control group .The proteins related differentiation was down regulated ,and epithelial mesenchymal transition was mediated .Conclusion After the deacetylation of HDAC1 was inhibited ,the proliferation ,differentia-tion and invasion of GCSCs were reduced .