实验动物与比较医学 ›› 2015, Vol. 35 ›› Issue (1): 1-5.DOI: 10.3969/j.issn.1674-5817.2015.01.001

• 华东地区第十三届实验动物科学学术交流会优秀论文选刊 •    下一篇

利用高压水动力法建立乙型肝炎病毒转染小鼠模型及初步评价

彭秀华1, 陈丽香1, 任晓楠1, 施碧胜1, 徐春华1, 周文江1, 周晓辉1,2   

  1. 1.上海市公共卫生临床中心,上海 201508;
    2.复旦大学上海医学院教育部分子医学重点实验室, 上海200032
  • 收稿日期:2014-06-30 出版日期:2015-02-25 发布日期:2015-02-25
  • 作者简介:彭秀华(1973-), 女, 兽医学本科, 从事感染性疾病动物模型研究, E-mail:pengxh1973@sina.com
  • 基金资助:
    上海市科委实验动物研究专项(13140902200)

Establishment and Preliminary Evaluation of Hepatitis B Virus Transfection Mouse Model by Using Hydrodynamic Injection

PENG Xiu-hua1, CHEN Li-xiang1, REN Xiao-nan1, SHI Bi-sheng1, XU Chun-hua1, ZHOU Wen-jiang1, ZHOU Xiao-hui1,2   

  1. 1. Shanghai Public Health Clinical Center, Affiliated to Fudan University, Shanghai 201508, China;
    2. Key Laboratory of Medical Molecular Virology, Ministry of Education and Health, Shanghai Medical College, Fudan University, Shanghai 200032, China
  • Received:2014-06-30 Online:2015-02-25 Published:2015-02-25

摘要: 目的 利用高压水动力法建立C57BL/6小鼠乙型肝炎病毒(HBV)转染模型,并对其进行初步的观察及药物评价。方法 将10 μg腺病毒相关病毒载体(pAAV)-HBV1.2质粒采用高压水动力法尾静脉注入 C57BL/6小鼠体内, 连续5周观察小鼠血清中的HBsAg、HBV DNA等表达情况,并利用该模型初步评价拉米夫定的抗病毒效果。结果 pAAV-HBV1.2质粒高压水动力法注射C57BL/6小鼠后,在小鼠体内分泌HBV的抗原及病毒颗粒。尾静脉注射2周内小鼠血清中HBsAg阳性率为100%,连续观察至第5周,22.2%小鼠血清中HBsAg有持续表达。小鼠血清中HBV DNA水平在1~4周时含量明显高于≥103拷贝/mL(临床患者阳性标准)。肝组织病理学观察(HE染色)可见不同程度肝细胞炎性改变,肝组织免疫组化可见到HBsAg和HBcAg表达。另外,使用抗病毒药物拉米夫定干预该小鼠模型, 其血清中HBV DNA水平明显下降。结论 初步建立的C57BL/6小鼠HBV转染模型, 是一个适用于药物筛选及疫苗研究的有效模型, 为抗病毒治疗研究奠定了一定基础。

关键词: 高压水动力法, 乙型肝炎病毒(HBV), 小鼠转染模型, 抗病毒药物

Abstract: Objective To construct a hepatitrs B Virus (HBV) transfection model in C57BL/6 mice with hydrodynamic injection and to further confirm the effectiveness of this mouse model for anti-HBV drug evaluation. Methods C57BL/6 mice were injected hydrodynamically via the tail vein with 10 μg of pAAV-HBV1.2 plasmid in 2 mL PBS. Results The serum level of HBsAg and HBV DNA level were monitored every week. Two weeks after the hydrodynamically injection (HI), all the mice were HBsAg positive while 22.2 % of the mice were still positive five weeks after HI. HBV DNA levels in the serum persisted higher than 103 copies/ml for four weeks after HI. Histopathological analysis showed inflammatory infiltration and high expression of HBcAg and HBsAg in the transfected mouse liver tissue. In addition, Lamividine were applied for the evaluating the potential of this mouse model for anti-HBV drug evaluation, and data showed significant down regulation of HBV DNA level in the Lamividine treated mice. Conclusion This HBV transfection mouse model maybe effective in screening efficient anti-virus drugs targeting HBV polymerase and in evaluating HBV therapeutic vaccines, and thus promoting the development of novel treatment strategies against chronic hepatitis B infection.

Key words: Hydrodynamic injection, Hepatitis B Virus(HBV), Transfection mouse model, Anti-virus drug

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