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Protective efficacy of DNA vaccine encoding tubercle MPT64 in mice challenged with M.Tuberculosis
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- Author:
- No author available
- Journal Title:
- JOURNAL OF THE FOURTH MILITARY MEDICAL UNIVERSITY
- Issue:
- 19
- DOI:
- 10.3321/j.issn:1000-2790.2004.19.005
- Key Word:
- 结核分枝杆菌;MPT64;DNA疫苗
Abstract： 目的:研究MPT64 DNA疫苗对鼠结核杆菌感染的免疫保护效果.方法:C57BL/6小鼠36只,随机分为4 组.A组(PBS)、B组(pcDNA3.1)、C组(BCG)、D组(pcDNA/MPT64);分别于胫前肌注射质粒DNA免疫,70 μg/次,1次/2 wk,共3次.末次免疫后5 wk用106 CFU H37Rv经尾静脉攻击,攻击后6 wk处死小鼠,测血清总IgG,特异性脾淋巴细胞增殖实验、IFN-γ及IL-4分泌水平.作脾、肺组织荷菌量和病理学检查以及观察小鼠存活时间.结果:MPT64基因疫苗诱导小鼠特异性IgG的产生、脾淋巴细胞增殖以及IFN-γ的分泌.MPT64 DNA免疫组肺、脾组织荷菌量,病理学改变和小鼠存活时间明显优于阴性对照组.结论:MPT64 DNA疫苗在抗结核分枝杆菌(Mtb)感染过程中具有一定免疫保护作用.
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