HBV對ANG的體外調控作用及機制研究
[Abstract]:Objective to investigate the regulatory effect of HBV on ANG and its mechanism, and to observe the effect of inhibiting ANG on cell proliferation. Methods HepG2.2.15 cell model and HepG2 cells transfected with plasmid pcDNA3.1-HBx were used to detect the changes of ANG protein by Real-time PCR and Elisa, Western Blot, and the effect of HBV/HBx on ANG was observed. The regulatory effect of HBV/HBx on IL-6 was detected by Western Blot and Elisa, and the changes of protein content in ANG cells after IL-6 stimulation and blocking of IL-6 activity by antibody were detected. The effect of HBV/HBx on HIF-1 偽 was detected by. Western Blot. The expression of ANG protein was detected by Western Blot after HIF-1 偽 siRNA silenced HIF-1 偽 gene. The effect of HBV on nuclear metastasis of ANG was detected by immunofluorescence method. ANG siRNA (50nM) was used to transfect HepG2.2.15 cells and ANG nuclear transfer inhibitor (neomycine, MTT) was used to detect the inhibition rate and the synthesis of ribosomal RNA45S RNA after ANG gene silencing. Results the results of Real-time PCR and Elisa, Western Blot showed that in the stable replication of HBV virus HepG2.2.15 cells and X protein transfected HepG2-HBx cells, The levels of ANG mRNA and protein were higher than those of the control group. Real-time PCR results showed that the ANG level increased in HepG2-HBx cells, and the transcription level of 45SRNA increased after ANG gene silencing. The results showed that the ANG level decreased after ANG gene silencing. The levels of IL-6 and HIF-1 偽 protein in HepG2.2.15 cells and HepG-HBx cells were higher than those in the control group. The results of Real-time PCR and Elisa showed that ANG mRNA and protein levels increased significantly after IL-6 stimulation, and the antibody blocked IL-6 activity. The results of. Western Blot and Elisa showed that the expression of ANG protein decreased after HIF-1 偽 gene silencing. The results of immunofluorescence showed that nuclear metastasis was significantly promoted in 2215 cells compared with the control. MTT results showed that ANG gene silencing in HepG2.2.15 cells or the addition of nuclear transfer inhibitors significantly inhibited cell proliferation. Conclusion the upregulation of ANG, by HBV/HBx may be due to its up-regulation of IL-6 and HIF-1 偽, HBV can promote the up-regulation of ANG nuclear metastasis, and ANG can inhibit the proliferation of cells when the activity of ANG is inhibited.
【學位授予單位】:浙江大學
【學位級別】:碩士
【學位授予年份】:2014
【分類號】:R512.62
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