大剂量HBsAg疫苗对小鼠细胞免疫应答的调节作用  

Modulatory function of high-dose hepatitis B surface antigen vaccine to cellular immune responses in mice

作　　者：熊一力[1] 刘惠萍[1] 祖萍[1] 贾彦征[1] 张宜俊[1] 

机构地区：[1]中国人民解放军第458医院全军传染病中心,广东广州510602

出　　处：《中国病理生理杂志》2003年第9期1250-1252,共3页Chinese Journal of Pathophysiology

基　　金：广东省重点科技计划项目 (B6 0 2 )

摘　　要：目的 :探讨大剂量HBsAg疫苗对机体细胞免疫应答的影响。方法 :不同剂量HBsAg疫苗两次免疫小鼠后 ,用氚 -胸腺嘧啶核苷 ( [3 H]-TdR)掺入法 ,ELISA方法分别测定免疫鼠T淋巴细胞增殖能力 ,细胞培养上清中白细胞介素 - 2 (IL - 2 ) ,γ干扰素 (IFN -γ)含量及血清中抗HBsIgG2a阳转率。结果 :大剂量HBsAg疫苗单次免疫后 ,小鼠T淋巴细胞增殖能力显著强于对照组 (P <0 0 5 ) ;Th1型细胞因子IL - 2、IFN -γ显著多于对照组 (P <0 0 5 ) ;抗HBsIgG2a阳转率显著高于小剂量组 (P <0 0 1)。加强免疫后 ,各项指标增高更显著 ,小剂量组才呈现显著性增高。结论 :大剂量HBsAg疫苗可诱生特异性细胞免疫应答 ,并使细胞免疫趋向Th1型。AIM: To observe the effects of high-dose hepatitis B surface antigen (HBsAg) vaccine on cellular immune response in BALB/C mice. METHODS: The mice were immunilized separately with low-dose and high-dose HBsAg vaccine by intramuscular injection two times. The specific proliferative activities of T lymphocytes were measured by [ 3H]-TdR incorporation assay. IL-2 as well as IFN-γ levels in the culture supernatant of T cells and anti-HBs IgG2a lever in sera were detected by enzyme-linked immunoabsorbent assay. RESULTS: After first vaccination with high-dose HBsAg, the proliferative activities of T cells in the experimental group were significantly stronger, both levels of IL-2 and IFN-γ were markedly higher than that in the control group and the percentage of mice to produce serum anti-HBs IgG2a was significantly higher compared to that of mice immunilized by low-dose HBsAg. All data in experimental groups were further increased after second dose of vaccine. CONCLUSION: Vaccination of mice with high-dose HBsAg can induce cellular immune responses tended to Th1(T helper 1 subset) response.

关 键 词：肝炎表面抗原 乙型 肝炎疫苗 乙型 免疫 细胞 小鼠 

分 类 号：R363[医药卫生—病理学]