AIM:To investigate the effect of propofol on the viability,invasion ability and apoptosis of colorec-tal cancer cells.METHODS:Propofol at 10,25,50 and 100 μmol/L was used to treat LoVo cells for 72 h,and propofol at 100 μmol/L was used to treat the LoVo cells for 12,24,48 and 72 h.The cell viability was measured by CCK-8 assay. The invasion ability of the LoVo cells treated with propofol at 100 μmol/L for 72 h was detected by Transwell assay.The cell cycle distribution and cell apoptotic rate were analyzed by flow cytometry.The protein levels of matrix metalloproteinase (MMP)-2,MMP-9,cleaved caspase-3,Notch1 and hairy and enhancer of split 1(Hes1)were determined by Western blot.RESULTS:Propofol inhibited LoVo cell viability.The cell invasion ability,S stage cells,and the protein levels of MMP-2,MMP-9,Notch1 and Hes1 in propofol group were significantly lower than those in control group,and the apoptotic rate,G0/G1cells and the protein level of cleaved caspase-3 were significantly higher than those in control group(P<0.01).CONCLUSION:Propofol inhibits the viability and invasion ability of colorectal cancer LoVo cells,blocks cell cy-cle and induces apoptosis.The mechanism is related to down-regulation of Notch1 signaling pathway.%目的:研究丙泊酚对结直肠癌细胞活力、侵袭和凋亡的影响,并探讨其作用机制.方法:10、25、50和100 μmol/L的丙泊酚处理LoVo细胞72 h,或以100 μmol/L的丙泊酚处理细胞12、24、48和72 h,CCK-8实验检测细胞活力;Transwell小室检测经100 μmol/L丙泊酚处理72 h的细胞的侵袭能力;流式细胞术检测细胞周期及细胞凋亡率;Western blot检测基质金属蛋白酶2(MMP-2)、基质金属蛋白酶9(MMP-9)、活化的胱天蛋白酶3(cleaved caspase-3)、Notch1和发状分裂相关增强子1(Hes1)的蛋白表达.结果:丙泊酚可抑制结直肠癌细胞活力;丙泊酚组细胞侵袭能力、S期细胞及MMP-2、MMP-9、Notch1和Hes1蛋白表达均显著低于对照组,而细胞凋亡率、G0/G1期细胞及cleaved caspase-3的蛋白水平均显著高于对照组(P<0.01).结论:丙泊酚可抑制结直肠癌LoVo细胞生长及侵袭能力,阻滞细胞周期,并诱导细胞凋亡,其机制与下调Notch1信号通路有关.
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