黄芪皂苷对化疗贫血小鼠PI3K/Akt/mTOR信号通路相关基因mRNA表达的影响

探讨黄芪皂苷对化疗贫血小鼠PI3K/Akt/mTOR相关基因mRNA表达的影响。选取6~7周龄BALB/c小鼠48只,雄性,随机分为空白组、模型组、皂苷组、甲苷组,每组12只。采用环磷酰胺建立化疗贫血模型,灌胃治疗14 d后,摘眼球取血,QPCR法检测脾脏中Akt,PI3K,BCL-xl,bad,Fox O,mTOR,PTEN的mRNA水平。结果表明,模型组血红细胞计数,血红蛋白含量与空白组、皂苷组和甲苷组比较,明显降低(P0.05)。与空白组、皂苷组、甲苷组相比,模型组Akt,PI3K,BCL-xl,bad,mTOR水平明显降低(P0.05或P0.01);皂苷组这5种基因水平均较空白组无明显差别;除PI3K外的4种基因,甲苷组较空白组有明显差别(P0.05或P0.01);而皂苷组与甲苷组水平也有统计学意义(P0.05或P0.01)。模型组与空白组、皂苷组相比,Fox O,PTEN水平明显升高(P0.05或P0.01),较甲苷组无明显差异;甲苷组这2种基因水平均较空白组升高显著(P0.05);而皂苷组的Fox O高于空白组(P0.05),皂苷组的PTEN与空白组无明显差异;皂苷组Fox O,PTEN水平与甲苷组无统计学意义。因此,该研究结果显示黄芪皂苷能提高Akt,PI3K,BCL-xl,bad,mTOR水平(P0.01),降低Fox O,PTEN水平(P0.05)。黄芪皂苷可有效改善环磷酰胺所造成的贫血,其机制可能与影响PI3K/Akt/mTOR信号通路相关基因有关。

Effect of astragaloside on mRNA expression of PI3K/Akt/mTOR signal transduction in anemia model mice induced by chemotherapy

To study the influence of astragaloside on mRNA expression of PI3K/Akt/mTOR signal transduction in anemia model mice induced by chemotherapy, 48 male BALB/c mice which were 6-7 week old were picked as the research objects and randomly divided into four groups, blank group, model group, astragaloside group and astragaloside IV group. Each group was 12 mice. Chemotherapy anemia model was established by cyclophosphamide. The mice were drawn blood from eyeball after 14 days treatment. The QPCR was used to test the mRNA concentrations of Akt, PI3K, BCL-xl, bad, FoxO, mTOR, PTEN in mouse spleen. In comparison of blank group, astragaloside group and astragaloside IV group,the erythrocyte counting and values of Hb in model group were significantly lower (P<0.05). The volumes mRNA of Akt,PI3K,BCL-xl,bad,mTOR were lower in blank group, compared with other groups (P<0.05 or P<0.01). The similar trend in astragaloside IV group except PI3K, comparing with blank group (P<0.05 or P<0.01). The contents of these five genes were no significant differentiations between astragaloside group and blank group. The statistics were obvious between astragaloside group and astragaloside IV group (P<0.05 or P<0.01). The concentrations of FoxO, PTEN were higher in model group,compared with blank group and astragaloside group (P<0.05 or P<0.01), but no difference with astragaloside IV group. Comparing with blank group, the volumes of these two genes were increased in astragaloside IV group (P<0.05), FoxO was higher in astragaloside group (P<0.05), but PTEN was not significant. There was no the same as astragaloside group and Astragaloside IV group. Therefore, astragaloside could increase the contents of Akt, PI3K, BCL-xl, bad, mTOR (P<0.01), decrease the concentrations of FoxO, PTEN (P<0.05). The changes in cyclophosphamide-induced anemia were highly significant by astragaloside. It could be related to the mRNA expression of PI3K/Akt/mTOR Signal Transduction.