乙型肝炎病毒转基因小鼠C57-TgN(adr2.0)SMMU品系的免疫病理研究

目的: 研究乙型肝炎病毒 (HBV)转基因小鼠C57 TgN(adr2. 0型)SMMU品系的免疫病理学特征, 并与临床人慢性乙肝相比较。方法: 以 20只SPF级肝脏有明显病变的HBV转基因小鼠为研究对象, 用间接免疫荧光法通过流式细胞仪, 分别检测转基因小鼠及正常C57BL/6小鼠外周血淋巴细胞表面CD3、CD4和CD8表达的水平, 同时取其肝组织和5例本院病理科存档确诊为慢性中度乙型肝炎患者的肝组织石蜡标本, 用EnVision免疫组化染色法检查肝组织内T细胞亚群的分布。结果: 转基因小鼠外周血淋巴细胞表面CD3、CD4和CD8表达的水平低于正常对照组小鼠; 肝组织内浸润的单个核细胞多数为CD3 CD4 细胞, 未发现CD57 、CD8 细胞。慢性乙型肝炎患者的肝组织内浸润的单个核细胞主要为CD3 CD4 或CD3 CD8 细胞和少量CD57 细胞。结论: C57 TgN(adr2. 0型 )SMMU的HBV转基因小鼠外周血及肝组织中CD的表达与人慢性乙肝患者的外周血及肝组织有明显不同。

Immunopathology of hepatitis B virus-transgenic mouse strain C57-TgN(adr2.0) SMMU

AIM: To make immunopathological study of hepatitis B virus transgenic mice line C57-TgN(HBV adr2.0) SMMU. METHODS: Twenty transgenic C57-TgN mice of SPF grade and corresponding control mice C57BL/6 were used for the study. The expressions of CD3, CD4 and CD8 on lymphocytes in peripheral blood from transgenic and normal C57BL/6 mice were detected by flow cytometry. T lymphocyte subsets in the liver tissues from transgenic mice and hepatitis B patients were analyzed by EnVision staining. RESULTS: The expression of CD3, CD4 and CD8 on lymphocytes in peripheral blood from transgenic mice was lower than those from normal mice. The infiltrative mononuclear cells in the liver tissues of transgenic mice were mainly CD3 CD4 cells, and no CD8 CD57 cells was found. The infiltrative mononuclear cells in the liver tissues of human hepatitis B patients were mainly CD3 CD4 or CD3 CD8 cells. CONCLUSION: T cell subsets in the peripheral blood and liver tissues of transgenic mice C57-TgN (adr2.0) SMMU are different from those in human chronic hepatitis B patients.