摘要
目的:研究山菠菜三萜组分体外及体内对Ⅱ相酶的活力及其蛋白表达的影响。方法:体外采用正常人支气管上皮(NHBE)细胞模型,体内采用昆明(KM)小鼠模型,以1-氯-2,4-二硝基苯(CDNB)比色法检测GST活力,NADPH与2,6-二氯靛酚钠(DCIP)测试NQO1活力,5,5-二硫二硝基苯甲酸(DTNB)比色法测定GSH含量,Western blot测定NQO1蛋白的表达。结果:山菠菜三萜组分能增加NHBE细胞和KM小鼠肺脏内GST和NQO1的酶活力并增加GSH的含量,在体外增加NQO1和Nrf2的蛋白表达。结论:山菠菜三萜组分可以通过调节体内外Ⅱ相解毒酶的酶活力及蛋白表达来实现癌化学预防。
To study the effects of triterpenoid components from Prunella asiatica on phase 1I detoxifying enzymes and protein expression in vitro and in vivo. Normal human bronchial epithelial （NHBE） cell model was used in vitro, and the mouse model of Kunming （KM） mice was used in vivo. CDNB assay was used to measure the activity of GST. NADPH and DCIP was used to detect the activity of NQO1. DTNB colorimetric assay was used to detect GSH. Western blot was use to detect the protein expression of NQO1. We found that triterpenoid components from P. asiatica could increase the activity of GST, NQO1 and GSH in NHBE cells and KM mice. NQO1 protein expression can also be increased in vitro. The study suggests that triterpenoid components from P. asiatica can prevent the lung cancer by regulating the body phase Ⅱ detoxification enzyme activity and protein expression,
出处
《中国中药杂志》
CAS
CSCD
北大核心
2012年第23期3637-3640,共4页
China Journal of Chinese Materia Medica
基金
江苏省中医药科技专项(LZ11062)
江苏省"六大人才高峰"项目(HZ09032)
