丙泊酚对结直肠癌细胞生物学行为的影响

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100μmol/L的丙泊酚处理Lo Vo细胞72 h,或以100μmol/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100μmol/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(P0.01)。结论:丙泊酚可抑制结直肠癌Lo Vo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。

Effects of propofol on biological characteristics of colorectal cancer cells

AIM: To investigate the effect of propofol on the viability, invasion ability and apoptosis of colorectal 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/G₁ cells 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 cycle and induces apoptosis. The mechanism is related to down-regulation of Notch1 signaling pathway.