免疫调控对慢性HBV复制的影响及其机制的研究
[Abstract]:Purpose 1. The BALB/ c mice were treated with immunosuppressive agents to inhibit the immunity of mice. Function. The plasmid pAAV/ HBV1.2 was injected with high-pressure water at the tail vein in these animals, and the virus, antigen and antibody responses of the mice were monitored, and the replication process of HBV was discussed. The effects of different treatment times on viral replication and antigen expression of HBV-replicating mice were observed. A BALB/ c mouse model for chronic HBV replication was established by long-term treatment of HBV, and the mice with chronic HBV replication were immunized with active immunization and passive immunization respectively after stopping the anti-inflammatory treatment, and the immune regulation was discussed. V Continuous Replication Effects of materials and methods 1, 6-8 weeks old female BALB/ c BALB/ c mice were treated with NS or OVA, and plasmid pAAV/ HBV1.2 was used to treat BALB/ c mice. Mice were injected to establish the mouse model of HBV replication. The blood samples of mice were collected on a regular basis. ECLIA was used to detect the levels of HBsAg, cryAb and cryAb in serum, and the HBV DNA, Real-Time PCR detects the degree of virus drop in the serum. 3. BALB/ c mice were divided into three groups: short-term treatment (-1 to 4 weeks), continuous treatment (-1 to 10 weeks) and saline treatment group, blood samples were collected at different time points or mice were killed, and the spleen of mice was tested by Elispoot. Detection of CD in Mouse Liver Tissues and Splenic Tissues by Real-Time PCR mRNA levels of molecular and antiviral-related cytokines. South Modern Blot tests the replication intermediates of HBV in the liver. Immunohistochemical method was used to detect the level of Ag in liver tissue. The immunological mechanism for prolonging the replication of HBV was analyzed. 4. BALB/ c mice (-1 to 10 weeks) were treated with MEBO. The plasmid was injected with high pressure water at the tail vein of 0 week. pAAV/ HBV1.2 was used to establish the mouse model of HBV replication. After 2 weeks after the end-of-day treatment, mice were treated with PBS, recombinant hepatitis B and non-immunized mouse spleen cells. to get rid of Effect of epidemic regulation on the continuous replication of HBV in immunosuppressed state. Results 1. Plasmid pAAV/ HBV1.2 was injected through tail vein high pressure water. In BALB/ c mice, mice can be produced Higher antigen and viremia. HBsAg was cleared within 7 weeks of the NS treatment group. The treatment group maintained high levels of antigen and viremia during the treatment period. Treatment with palbociclib for 11 weeks (-1 up to 10 weeks), 75% of animal HBsAg can be continuously positive for more than 6 months. With the prolongation of treatment time, the duration of HBsAg expression in mice was prolonged. 7 weeks (-1 to 6 weeks) enabling most of the animals to remain positive for HBsAg Sex for more than 6 months. 3. Continuous treatment cannot inhibit mouse specificity. In contrast, the specific T-cell response in the treated group was significantly higher than that in the NS treatment group. 4. The treatment of T cells inhibited some CD molecules and cytokines in liver and spleen groups. Expression in tissue, including CD3, CD4, CD8, FasL, Perf The expression of orin, IL-2. However, the expression of IFN-jun, TNF-jun and IFN-jun was There was no effect. After short-term treatment, HBV infection was cleared, and some cytokines expression showed a rebound trend. Therapy can promote the clearance of HBV, promote the production of anti-HBV Ab and anti-HBV Ab, enhance the specific T cell response of mice. 6. Stop the treatment of chronic HBV replication in mice, and specifically immunize the spleen cells of the mice. The adoptive immunotherapy of spleen cells of epidemic mice can control the replication of HBV, in which specificity immunity The effect of adoptive immunotherapy on spleen cells in mice is especially obvious, and it can promote the production and enhancement of mouse-specific T cell response. Conclusion 1. BALB/ c mice were treated with MEBO in the model of high pressure water injection. Mice can change HBV replication duration. Continuous treatment for 7 weeks (-1 to 6 weeks) can effectively prolong the replication time of HBV to more than 6 months. There was no detail effect on the expression and secretion of the expression and secretion, but it inhibited the expression of the immune molecules such as Perforin and Fas-L. V is related to continuous replication. This suggests that HBV clearance requires a complete immune function, and the absence of specific T cells is not sufficient to clear the HBV infection. The replication of HBV can be cleared, and the expression level of various CD molecules and cytokines in the liver and spleen rebound. It is suggested that the immune function of the body can gradually recover and control the replication of HBV after the short-term immune inhibitor is treated. group immunity or the adoptive immunotherapy of specific spleen cells can effectively eliminate or control HBV replication, promote the recovery of humoral immune response in mice and enhance the immune response of specific T cells. At the innovation point 1 of the study, the model of acute HBV replication with high pressure water injection was used as the background, and the immune response was used as the background. The inhibitor treated BALB/ c mice, leading to the continuous replication of HBV. Role and possible immunological mechanisms to prolong the replication of HBV. The model of HBV sustained replication in mice was used to explore the role of immunomodulating therapy in controlling HBV infection. can be effective after being cleared To control the replication of HBV, to promote the recovery of humoral immune response, and to promote the enhancement of specific T cell response. It is suggested that immunoregulation can be used to treat the chronic HBV infection induced by immunosuppressive agents. The immune function of mice is prolonged, the replication of HBV in BALB/ c mice is prolonged, and the effect of treatment on the immune function of the body is studied. In order to understand the immune mechanism of chronic HBV infection in immunosuppressed state, new insights are provided.
【学位授予单位】:华中科技大学
【学位级别】:博士
【学位授予年份】:2012
【分类号】:R512.62;R392
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