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恶性疟原虫裂殖子表面蛋白1羧基端编码基因真核表达重组克隆的构建 |
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缪军 薛采芳 喻启桂 秦恩强
作者单位:710032 西安,第四军医大学寄生虫学教研室
本研究得到联合国开发计划署/世界银行/ 世界卫生组织热带病研究和培训特别规划署 (TDR)的资助ID No.950385
【 摘要 】 目的 构建以恶性疟原虫红内期重要的疫苗候选抗原——裂殖子表面蛋白1(M SP1)羧基端编码分子量42000蛋白的基因片段为外源基因的可用作候选核酸疫苗的真核表 达载体。方法 目前对疟疾核酸疫苗的研究仅见于鼠疟,将恶性疟原虫FUP株裂殖子表面蛋 白1羧基端编码42000蛋白的基因片段用常规分子克隆方法,分别克隆入非分泌性真核表达 载体VR1012和改建后的分泌型载体VR1012/TPA中,通过PCR和酶切鉴定出重组克隆。结 果 成功地构建了真核表达载体VR1012/MSP1-42和VR1012/TPA/MSP1-42。结论 目 前对疟疾核酸疫苗的研究仅见于鼠疟红外期,该研究对研制有效的恶性疟原虫红内期核酸疫 苗是一个有益的尝试。其免疫保护作用待进一步研究。
【 主题词 】 核酸疫苗 裂殖子表面蛋白1 基因表达 质粒 疟原虫,恶性 Construction of a couple of eukaryotic expression recombinants conta ining the gene fragment of 42kD C-terminal region of Plasmodium falcipa rum merozoite surface protein 1 Miao Jun,Xue Caifang,Yu Qigui et al.D epartment of Parasitology,Fourth Military Medical University,Xia n 710032
【 Abstract 】 Objectives Nucleic acid vaccine has several major advantages over other types of available vaccines,such as in situ euka ryotic expression and generation of extensively cellular response.T o construct a couple of eukaryotic expression recombinants containin g the gene fragment of C-terminal region (coding for 42kD protein) of Plas modium falciparum(P.f)merozoite surface protein 1(MSP1),which coul d be a candidate nucleic acid vaccine. Methods The gene fragment of C-t erminal region (coding for 42kD protein) of MSP1 from P.f FUP strain was cloned into eukaryotic expression plasmid VR1012 for intracellular e xpression and VR1012/TPA for secretion by commonly used molecular clo ne methods.The eukaryotic expression recombinants were identified b y PCR and restriction enzyme.Results The recombinants VR1012/MSP1- 42 and VR1012/TPA/MSP1-42 were successfully constructed.Conclusion s Up to now only nucleic acid vaccine of rodent malaria was reported.Thi
[1] [2] [3] 下一页 上一个医学论文: 不同种属钩端螺旋体疏水外膜蛋白的特征研究 下一个医学论文: 广州地区解脲脲原体分离株脲酶基因片段的扩增 克隆及序列分析
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