3种温阳健脾汤药对非酒精性脂肪肝细胞增殖与凋亡的影响

Effects of three Wenyang Jianpi Tang on cell proliferation and apoptosis of nonalcoholic fatty liver cells

通过油酸诱导正常肝细胞株LO2构建非酒精性脂肪肝细胞模型,探讨四君子汤、理中汤和附子理中汤对非酒精性脂肪肝细胞增殖与凋亡的影响。不同浓度的油酸诱导正常肝细胞株LO2构建非酒精性脂肪肝细胞模型,油红O染色观察非酒精性脂肪肝细胞的脂滴形成状况;全自动生化分析仪检测细胞上清液中天冬氨酸氨基转移酶(AST)、丙氨酸氨基转移酶(ALT)、总胆固醇(TC)和甘油三酯(TG)水平。分别设正常组、模型组、模型+四君子汤组、模型+理中汤组和模型+附子理中汤组,MTT检测各组细胞增殖情况;流式细胞仪检测各组细胞凋亡情况;Western blot检测各组细胞中PCNA,cleaved caspase-3,cleaved caspase-8,cleaved caspase-9,Bax和Bcl-2蛋白的表达情况。油红O染色结果显示,与低浓度诱导相比,80 mg·L^(-1)油酸诱导非酒精性脂肪肝细胞模型效果最佳,且诱导成功后细胞上清液中AST,ALT,TC和TG含量显著升高(P<0.01)。MTT和流式细胞仪检测结果显示,四君子汤、理中汤和附子理中汤均能有效促进非酒精性脂肪肝细胞的增殖并抑制其凋亡(P<0.01),且附子理中汤的作用效果最佳。Western blot检测结果显示,四君子汤、理中汤和附子理中汤能下调非酒精性脂肪肝细胞中cleaved caspase-3,cleaved caspase-8,cleaved caspase-9和Bax蛋白表达量,上调PCNA和Bcl-2蛋白的表达量,且附子理中汤的调节效果较其他2组药物处理更显著。该实验表明四君子汤、理中汤和附子理中汤均能有效促进非酒精性脂肪肝细胞的增殖并抑制其凋亡,且附子理中汤的作用效果最佳,其药效机制可能与3种汤药介导增殖与凋亡相关通路中关键因子的表达有关。

To investigate the effects of Sijunzi Tang, Lizhong Tang and Fuzi Lizhong Tang on the cell proliferation and apoptosis of nonalcoholic fatty liver cells through the nonalcoholic fatty liver cell model established by inducing L02 cells with oleic acid.Different concentrations of oleic acid were added into L02 cells to induce the nonalcoholic fatty liver cell model.Oil red O staining was used to observe fatty droplets of fatty liver cells.Automatic biochemical analyzer was used to detect the levels of aspartic transaminase（AST）, alanine aminotransferase（ALT）, total cholesterol（TC）, and triglyceride（TG） in the cell supernatants.There were five groups, namely normal group, model group, model and Sijunzi Tang group, model and Lizhong Tang group, and model and Fuzi Lizhong Tang group.The cell proliferation and apoptosis of the five groups were detected by MTT colorimetry test and flow cytometer.The expressions of PCNA, cleaved caspase-3, cleaved caspase-8, cleaved caspase-9, Bax and Bcl-2 proteins of the five groups were detected by Western blot.The oil red O staining results showed that the optimum concentration of oleic acid that was used to induce nonalcoholic fatty liver cell models was 80 mg·L-1.The levels of AST, ALT, TC and TG in the nonalcoholic fatty liver cell supernatants were higher than that in normal liver cell supernatants（P〈0.01）.MTT colorimetry test and flow cytometer results showed that all of Sijunzi Tang, Lizhong Tang and Fuzi Lizhong Tang could effectively promote the cell proliferation, and inhibit the cellular apoptosis of nonalcoholic fatty liver cells（P〈0.01）.And Fuzi Lizhong Tang showed the best effect.Western blot results showed that Sijunzi Tang, Lizhong Tang and Fuzi Lizhong Tang could down-regulate the expressions of cleaved caspase-3, cleaved caspase-8, cleaved caspase-9 and Bax proteins, and up-regulate the expressions of PCNA and Bcl-2 proteins of nonalcoholic fatty liver cells.And Fuzi Lizhong Tang showed the best effect.In conclusion, all of Sijunzi Tang, Lizhong Tang and Fuzi Lizhong Tang could effectively promote the cell proliferation, and inhibit the cellular apoptosis of nonalcoholic fatty liver cells.And Fuzi Lizhong Tang showed the best effect.The pharmacodynamic mechanism may be related to the expressions of key factors in pathways related with proliferation and apoptosis mediated by the three decoctions.