白藜芦醇对肝癌细胞Bel-7402的抑制作用及其效应机制分析

The inhibition and possible mechanism of resveratrol on hepatocellular carcinoma cell line Bel-7402 both in vitro and vivo

目的通过体内体外实验,观察白藜芦醇(resveratrol,Res)对肝癌细胞Bel-7402的增殖抑制作用,并对其抑癌的可能效应机制进行分析。方法实验中设4个Res药物组,终浓度分别为12.5、25、50、100μmol/L,同时设置不含Res药物的对照组,采用MTT法测试Res对体外培养肝癌Bel-7402细胞的增殖抑制作用,反转录PCR(reverse transcription-PCR,RT-PCR)检测Bcl-2 mRNA的表达,Western Blot检测Bcl-2蛋白的表达,ELISA测定Res对荷瘤小鼠细胞因子水平的影响。结果与对照组相比,Res可以呈剂量和时间依赖性方式抑制肝癌Bel-7402细胞的增殖和Bcl-2 mRNA及其蛋白的表达(P<0.05)。同时Res能明显抑制荷瘤小鼠肿瘤的生长,并能明显升高荷瘤小鼠体内细胞因子IL-2、IL-6、IL-12和TNF-α的水平(P<0.05)。结论 Res体内与体外对肝癌细胞Bel-7402均有明显的增殖抑制活性,其抗肿瘤的效应机制可能与其下调Bcl-2的表达和提高细胞因子IL-2、IL-6、IL-12及TNF-α的水平有关。

Objective To explore the inhibition effect and the possible mechanism of resveratrol on human hepatocellular carcinoma cell line Bel-7402 both in vitro and vivo.Methods Four Res drugs in the experiment group,the final concentrations were 12.5,25,50,100μmol/L,the control group at the same time set not containing Res drugs,MTT assay was used to measure the inhibition of resveratrol on Bel-7402.The expression of Bcl-2 was detected by RT-PCR and Western Blot.The levels of IL-2,IL-6,IL-12 and TNF-αwere detected by ELISA.Results Resveratrol inhibited Bel-7402 cell proliferation in dose and time manner,and influenced the expression of Bcl-2 mRNA and protein.At the same time,resveratrol inhibited the growth of tumor and improved the levels of IL-2,IL-6,IL-12 and TNF-α.Conclusion Resveratrol could inhibit Bel-7402 cell proliferation both in vitro and vivo, the possible mechanism may be that resveratrol could low down the expression of Bcl-2 and improve the levels of IL-2,IL-6,IL-12 and TNF-α.