蛋白激酶C-核因子相关因子2调节大鼠气道上皮细胞血红素加氧酶-1的表达
[Abstract]:Aim: to investigate the effect of protein kinase C (PKC)-erythroid derived nuclear factor-associated factor 2 (Nrf2) on the expression of heme oxygenase-1 (HO-1) in rat airway epithelial cells induced by cigarette smoke extract (CSE). Methods: twenty-five SD rats were randomly divided into three groups: control group, CSE3h group, RO318220 (PKC inhibitor) group, Nrf2 siRNA group and Nrf2 siRNA RO318220 group. The control group was cultured with DMEM/F12, the CSE3h group was co-cultured with 10%CSE for 3 h, the RO318220 group was pretreated with 3 渭 mol / L RO318220 for 0.5 h, the rest was pretreated with CSE3h, the Nrf2 siRNA group was pretreated with Nrf2 siRNA, and the other was treated with CSE3h. Nrf2 siRNA RO318220 group was pretreated with 3 渭 mol / L RO318220 and Nrf2 siRNA, and the others were the same as CSE3h group. The expression of HO-1,Nrf2 and PKC protein was detected by Western blot, the expression of HO-1 protein was observed by immunocytochemistry, the expression of HO-1mRNA was detected by reverse transcription-polymerase chain reaction (RT-PCR), and the nuclear translocation of Nrf2 was observed by immunofluorescence. HO-1 activity was determined. Results: CSE significantly induced nuclear translocation of Nrf2, which could be blocked by RO318220. Ho-1 protein was strongly expressed in CSE3h group, and weakly expressed in control group, RO318220 group, Nrf2siRNA group and Nrf2siRNA RO318220 group. The expression of HO-1 mRNA and protein was significantly higher than that of the control group, and the activity of HO-1 was significantly higher than that of the control group (P0.05), but there was no significant difference in the expression level of PKC protein between the Nrf2 siRNA group and the CSE3h group (P0.05). Conclusion: CSE induces nuclear translocation of Nrf2 through PKC signaling pathway and up-regulates the expression of HO-1.
【作者单位】: 湖南省人民医院呼吸内科;
【分类号】:R563.9
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