摘要
目的通过研究鳖甲煎丸对肝细胞癌中Wnt信号通路及抑制基因DKK-1、FrpHe表达的影响,探讨其抗肝细胞癌转移侵袭的作用机制与Wnt/β-catenin信号通路的关系。方法 24只Wistar大鼠随机分为3组(8只/组),分别以临床剂量的20倍、10倍的鳖甲煎丸和生理盐水灌胃3 d,3 d后采血,离心,获取血清。分别将3组血清加入DMEM培养液中培养肝癌细胞HepG2,48 h后采用流式细胞术检测细胞中的β-catenin蛋白含量,qRT-PCR法检测DKK-1、FrpHe基因的表达情况,以进一步阐明药物的作用机制与Wnt/β-catenin信号通路的关系。结果流式细胞术结果:高剂量组和中剂量组含药血清均可显著降低细胞中β-catenin蛋白表达,且该作用与药物浓度有关。RT-PCR结果:高剂量组和中剂量组含药血清均可显著下调DKK-1基因的表达,且该作用与药物浓度有关。而高剂量组和中剂量组含药血清对FrpHe基因的表达影响不明显。结论鳖甲煎丸能显著抑制肝细胞癌的生长、粘附和转移,且这种抑制作用与显著降低肝癌细胞中β-catenin蛋白表达、显著下调DKK-1基因的表达,从而阻断Wnt/β-catenin信号通路有关。
Objective To investigate the effect of Biejiajian Pills on Wnt signal pathway and its inhibitory gene （DKK-1 and FrpHe） expressions and explore the mechanism underlying the action of Biejiajian Pills to suppress the invasiveness of hepatocellular carcinoma. Methods Twenty-four Wistar rats were randomized equally into 3 groups for gavage of normal saline and Biejiajian Pills at 20- and 10-fold clinical doses for 3 days. Blood samples were then collected from the rats, and the serum was separated and added in HepG2 cell cultures. After 48 h of culture, the ceils were collected to determine the cellular content of β-catenin protein using flow cytometry and detect DKK-1 and FrpHe mRNA expressions using qRT-PCR. Results HepG2 cells cultured in the presence of sera from rats fed with Biejiajian Pills showed significantly lowered β-catenin protein expression and obvious down-regulation of DKK-1 mRNA expression, and the effect was correlated with the doses of the drug administered. The expression of FrpHe mRNA showed no significant differences between the 3 groups. Conclusions Biejiajian Pills can effectively inhibit the invasiveness and migration of hepatocellular carcinoma cells, which is closely related to decreased expressions of β-catenin and DKK-1 to cause block of the Wnt/β-catenin signal pathway.
出处
《南方医科大学学报》
CAS
CSCD
北大核心
2013年第1期30-33,共4页
Journal of Southern Medical University
基金
国家自然科学基金(81072934)
广东省自然基金(9151051501000003)
广东省中医药局基金(1050128)~~
