实用肝脏病杂志 ›› 2015, Vol. 18 ›› Issue (4): 348-351.doi: 10.3969/j.issn.1672-5069.2015.04.004

• 实验性肝炎 • 上一篇    下一篇

三种免疫抑制剂对HBV质粒感染小鼠HBV复制的影响*

黄顺梅,王俊忠,宋志韬,王宝菊,朱珍妮,朱彬,陆蒙吉,杨东亮   

  1. 430022 武汉市 华中科技大学同济医学院附属协和医院感染病科(黄顺梅,王俊忠,宋志韬, 王宝菊,朱珍妮,朱彬,杨东亮);德国埃森大学医学院病毒研究所(陆蒙吉)
  • 收稿日期:2014-12-23 出版日期:2015-07-10 发布日期:2016-02-19
  • 通讯作者: 王宝菊,E-mail:bjwang73@163.com E-mail:hshm1982@sina.com
  • 作者简介:黄顺梅,女,30岁,博士研究生。主要从事感染与免疫研究。E-mail:hshm1982@sina.com
  • 基金资助:
    国家传染病防治科技重大专项课题(2008ZX10002011)

Impact of three immunosuppressors on HBV replication in HBV plasmid transfected mice

Huang Shunmei,Wang Junzhong,Song Zhitao,et al.   

  1. Department of Infectious Diseases,Union Hospital,Tongji Medical College,Huazhong University of Science and Technology, Wuhan 430022,China
  • Received:2014-12-23 Online:2015-07-10 Published:2016-02-19

摘要: 目的 应用小鼠模型评价3种临床常用的免疫抑制剂对乙型肝炎病毒(HBV)复制的影响。方法 利用高压水注射法将HBV质粒pAAV/HBV1.2导入Balb/C小鼠肝内,建立小鼠HBV复制模型;将Balb/C小鼠随机分成4组,每组10只,分别给予生理盐水(Saline)、FK506、DEX和CYP处理。1w后,将供体C57BL/6小鼠皮瓣移植至上述经免疫抑制剂或生理盐水处理的Balb/C小鼠,皮肤移植后继续使用上述免疫抑制剂或生理盐水至观察期结束。采用电化学免疫发光法检测血清HBsAg、HBsAb和HBcAb水平,采用Real-time PCR法检测血清病毒载量。结果 FK506、地塞米松和环磷酰胺处理小鼠移植皮瓣的存活时间分别为(21.50±3.09) d、(21.50±3.09) d和(21.40±1.52) d,分别较生理盐水处理组(8.67±1.86) d明显延长[P=0.037、P=0.000和P=0.000];FK506处理组小鼠HBV复制及其抗体产生与对照组无显著性差异,地塞米松处理组在药物处理期间能维持病毒复制,但停药后病毒DNA和HBsAg迅速下降至检测水平以下,至观察终点仍未检出HBsAb和HBcAb阳性,环磷酰胺能明显延长小鼠HBV复制的持续时间,即使在停药后16 w血清HBV DNA和HBsAg均维持在较高水平,HBcAb和HBsAb持续阴性。结论 环磷酰胺而非FK506处理可在Balb/C小鼠模型中建立HBV持续复制模型。

关键词: 乙型肝炎病毒, 免疫抑制剂, 高压水注射, 小鼠

Abstract: Objective To evaluate the effect of three commonly used immunosuppressors on HBV replication in mouse model. Methods pAAV/HBV1.2,a HBV plasmid,was introduced into livers of Balb/C mice by hydrodynamic injection to establish HBV replication model. Animals were treated with dexamethasone(DEX), tacrolimus(FK506),cyclophosphamide (CYP) or saline from 6 days before plasmid injection to 10 weeks after injection. HBsAg,HBsAb and HBcAb were detected by electrochemiluminescence immunoassay(ECLIA),and HBV DNA by real-time PCR. Results The survival time of the transplanted skin grafts in DEX,FK506,and CYP treated mice were (21.50±3.09),(21.50±3.09) and (21.40±1.52) days,respectively,much longer than that of grafts in saline treated mice[(8.67±1.86) d,P=0.037,P=0.000 and P=0.000,respectively];HBV replication and antibody generation in FK506 treated mice was similar to that in control group;HBV replication was maintained at the high level in DEX treated mice during the treatment period,however,HBV DNA and HBsAg levels dropped rapidly after the medicine withdrawal,while HBsAb and HBcAb were negative throughout the observation period;In CYP treated mice,HBV replication was prolonged and HBV DNA and HBsAg were at high levels even at week 16 after CYP withdrawal,while HBsAb and HBcAb were negative throughout the observation period. Conclusion The persistent replication of HBV in BALB/c mice can be achieved by administration of CYP rather than FK506.

Key words: Hepatitis B virus, Immunosuppressor, Hydrodynamic injection, Mice