中国寄生虫学与寄生虫病杂志 ›› 1999, Vol. 17 ›› Issue (3): 14-174.

• 实验研究 • 上一篇    下一篇

猪囊尾蚴抗原与猪白细胞介素-4基因融合DNA疫苗载体的构建

吴丹,郭瀛军,孙树汉
  

  1. 上海第二军医大学医学遗传学教研室 上海 200433
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:1999-06-30 发布日期:1999-06-30

CONSTRUCTION OF DNA VACCINE INCLUDING A CHIMERIC GENE ENCODING CYSTICERCUS CELLULOSAE ANTIGEN AND PORCINE INTERLEUKIN 4

WU Dan;GUO Yingjun;SUN Shuhan   

  1. Department of Medical Genetics;Second Military Medical University;Shanghai 200433
  • Received:1900-01-01 Revised:1900-01-01 Online:1999-06-30 Published:1999-06-30

摘要:   目的: 为增强猪囊尾蚴抗原c C1 的免疫保护作用而构建一表达猪白细胞介素4( I L4)与 c C1 抗原融合蛋白的 D N A 疫苗载体。方法: 通过聚合酶链反应( P C R),分别扩增猪 I L4c D N A 和c C1c D N A 片段并进行融合,获得的嵌合基因 I L4c C1 中含有10 个氨基酸的中间接头序列,同时对其5’ A U G 侧翼序列进行翻译优化突变。结果:经酶切鉴定,证实有一1.5 kb 的片段插入载体,其 D N A 序列分析结果与文献报道和实验设计完全一致。结论:表达猪 I L4 与猪囊尾蚴抗原c C1 融合蛋白的 D N A 疫苗载体构建成功。

关键词: 囊尾蚴病, 白细胞介素-4, 基因融合, DNA疫苗

Abstract:  AIM: To construct a fusion expression vector for DNA vaccine including porcine interleukin 4(IL 4)and antigen cC1 to enhance the protective immunity of Cysticercus cellulosae antigen cC1. METHODS: The cDNA fragments encoding porcine IL 4 and cC1 were amplified respectively by PCR and then fused.The obtained chimeric gene IL 4cC1 contained a synthetic linker of ten amino acids and the sequence surrounding its 5’ AUG initiatory codon was changed to optimized translational initiation. RESULTS: Identified by restriction enzyme analysis,an insert fragment of 1.5 kb was demonstrated. It had the same sequence as reported and designed by DNA sequencing analysis.CONCLUSION: A fusion expression plasmid containing porcine IL 4 and cC1 was constructed.

Key words: Cyticercosis, interleukin 4, gene fusion, DNA vaccine