| 胡忠玉,何鹏,张瑞,方鑫,朱凤才,邱少辉,李河民,汪华,梁争论,庄辉.重组乙型肝炎疫苗和乙型肝炎表面抗原诱导细胞免疫应答[J].中华流行病学杂志,2008,29(7):706-711 |
| 重组乙型肝炎疫苗和乙型肝炎表面抗原诱导细胞免疫应答 |
| Cellular immune responses of recombinant hepatitis B (rHB) vaccine and HBsAg derived from Hansenularpolymorpha cells |
| 收稿日期:2007-12-06 出版日期:2014-09-15 |
| DOI： |
| 中文关键词: 乙型肝炎疫苗 免疫，细胞 乙型肝炎表面抗原 |
| 英文关键词: Hepatitis B vaccine Immune, cellular HBsAg |
| 基金项目:国家“十五”科技攻关课题资助项目(2004BA718B02) |
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| 中文摘要: |
| 目的 探讨重组乙型肝炎(乙肝)疫苗和汉逊酵母菌表达的乙肝表面抗原(rHBsAg)诱 导动物和人体细胞免.疫应答的动态变化。方法 应用不同剂量rHBsAg免疫小鼠(BALB/c,H-2d),酶 联免疫斑点法(ELISPOT)检测小鼠脾单个核细胞(MNC)体外刺激诱生IFN-7的水平;单剂rHBsAg免 疫后不同-时伺检测MNC、CD8+T淋巴细胞产生IFN-7水平;同时测定免疫后不同时间细胞毒T淋巴 细胞反应(CTL)活性;检测免疫单剂和多剂乙肝疫苗后小鼠MNC分泌IFN-y、IL-2、IL-5和抗-HBs抗 体水平;对乙肝感染标志阴性的4名成年人按0、1、2个月程序接种乙肝疫苗,检测免疫后外周血单个 核细胞(PBMChCDg+T淋巴细胞分泌[FN-y、IL-2和丨L-4水平以及抗体动态。结果 应用ELISPOT 法,汉逊rHBsAg免疫小鼠7 d时,可检测到IFN-7应答,14d时达到高峰;CTL在免疫后7 d时可检出,峰值位于28 do在1~8吨免疫剂量范围内,MNCs IFN-7免疫应答与剂量呈显著正相关(阳转率：r=0.951,P=0.049<0.05;SFC:r= 0.996,P=0.000<0.05),在1~4 鸿免疫剂量范围内,CDS+T 淋巴细胞的IFN-γ与剂量也呈显著正相关r=0.999,P=0.025<0.05);三剂乙肝疫苗免疫小鼠诱生细胞 免疫和体液免疫应答水平均显著高于单剂(P值均<0.05);成年人接种汉逊乙肝疫苗后不同个体间 细胞免疫和体液免疫应答的模式不同,IL-2、IL-4应答与个体抗体滴度有关。结论 用ELISPOT法 成功测定了汉逊HBsAg免疫小鼠后不同淋巴细胞的细胞免疫剂量效应和CTL时间动态变化,并分 析了成年人的细胞免疫应答特点,为规范疫苗细胞免疫评价提供了基础。 |
| 英文摘要: |
| ObjeeUve To study the kinetics of immune response in mice and human immunized with rHB vaccine or rHBsAg derived from yeast cells (Hansenula polymorpha). Methods With different doses, the level of IFN-y secreted by spleen mononuclear cells (MNC) including CD8+ T cells by MACs of mice were detected by enzyme-linked immunospot (ELISPOT) methods after stimulation in vitro with HBsAg MHC class I peptide S28-39, respectively. At serial time points, the immunized mice were detected for IFN-7 by ELISPOT as above and for the lymphocytotoxicity test (CTL) by specific lysis assay. The levels of IFN-7, IL-2, IL-5 and anti-HBs in mice induced by rHB vaccine were detected after single or three doses. Four adults were vaccinated with rHB vaccine according to 0, 1 and 2 month schedule. The peripheral blood mononuclear cells (PBMCs) were collected at the 3, 8, 21, 34 and 65 days after the first dose. The CD§ T cells with high purity obtained by sorting from PBMCs were stimulated with rHBsAg or HBsAg peptides. The SFC of IFN-y, IL-2 and IL-4 of CD: and CDg T cells were determined by ELISPOT. Results The cytokine of IFN-7 became detectable on day 7 and its peak value appeared on day 14 by ELISPOT，The CTL was detected on day 7 and the maximum lysis of CTL appeared on day 28. The cellular immune response of IFN-y of MNCs were significantly correlated with the doses vaccinated from 1 ^xgto8 jig (rpo9itiverate8 = 0.951,Ppositiveratea = 0.049<0.05; rSFC = 0.996, PSFC = 0.000<0.05)? IFN-y SFC of CD: T cells were significantly associated with the doses from 1 fxg to 4 /^g (r = 0.999, P = 0.025<0.05). The HBsAg specific cellular immune and humoral responses of mice immunized with three doses were significantly higher than that with a single dose (P<0.05). The characteristics of IFN-y, IL-2 and IL-4 of CD: and CD8+ T cells were variable between individuals immunized with the same rHB vaccine. The level of IL-2 and IL-4 of responders were significantly related to the titer of anti-HBs. Conclusion Data from this study showed the kinesis of cellular immunity in mice and adults vaccinated with rHBsAg or rHB vaccine respectively, and the characteristics of cellular immune response in adults induced by the vaccine. Our data provided the basis of standardizing the analysis of cellular immune response to rHB vaccine. |
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