中药抗纤灵方含药血清对TGF-β_1刺激的HK-2细胞c-Met及其下游MAPK信号分子的调控作用

目的:观察中药抗纤灵方对转化生长因子β1(TGF-β1)刺激后肾小管上皮细胞(TECs)中肝细胞生长因子(HGF)受体c-Met及其下游丝裂原激活的蛋白激酶(MAPK)信号分子的调控作用,以初步探讨其延缓肾纤维化的作用机制。方法:给予大鼠中药灌胃3d后制备抗纤灵含药鼠血清,应用不同含药血清处理经TGF-β1刺激的HK-2细胞,然后用Alarmblue法和Western blotting法检测细胞增殖率、c-Met和MAPK磷酸化情况。结果:TGF-β1和含药鼠血清对HK-2细胞增殖率无明显影响,含药血清影响TGF-β1刺激的HK-2细胞c-Met的表达及MAPK的磷酸化。结论:抗纤灵含药血清可调节HGF受体c-Met介导的MAPK的磷酸化。

Effects of sera containing Kang xian ling on c-Met and its downstream MAPK signal molecules in HK-2 cells treated with TGF-β_1

AIM: To observe the effects of sera containing Kang xian ling (a traditional Chinese medicine) on c-Met and its downstream MAPK signal molecules in HK-2 cells treated with transforming growth factor-β_1(TGF-β_1), so as to further explore the effective mechanism of anti-renal fibrosis of the traditional Chinese medicine. METHODS: Rat sera containing herbs were collected after rats were intragastrically administered with the herbs. HK-2 cells activated by TGF-β_1 were incubated with different heat-inactivated sera. The proliferation and expression of MAPK and the phosphorylation of MAPK in HK-2 cells were detected by Alarm blue and immunoblotting. RESULTS: No significant difference of cell proliferation between any two groups was observed. C-Met and the phosphorylation of its downstream molecules were also observed after incubated with different sera. CONCLUSION: The receptor c-Met of hepatocyte growth factor, and the phosphorylation of its downstream MAPK molecules can be regulated by the sera containing Kang xian ling.