中国寄生虫学与寄生虫病杂志 ›› 1997, Vol. 15 ›› Issue (6): 370-372.

• 论著 • 上一篇    下一篇

杜氏利什曼原虫cDNA文库的构建

敬保迁1; 胡孝素2; 陈建平2; 刘洪斌2   

  1. 1 川北医学院微生物学教研室; 2 华西医科大学寄生虫学研究室
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:1997-12-28 发布日期:1997-12-28

CONSTRUCTION OF THE c DNA LIBRARY OF LEISHMANIA DONOVANI

Jing Baoqian1; Hu Xiaosu2; Chen Jianping2; L iu Hongbin2   

  1. 1 Department of Microbiology, North Sichuan Medical College, Nanchong 637000 2 Laboratory of Parasitology, West China University of Medical Sciences, Chengdu 610044
  • Received:1900-01-01 Revised:1900-01-01 Online:1997-12-28 Published:1997-12-28

摘要: 目的 :建立杜氏利什曼原虫 cDNA文库 ,以获取个体基因表达产物和研究基因结构。方法 :以杜氏利什曼原虫四川人分离株 m RNA为模板 ,体外合成 cDNA,以噬菌体λgt11DNA为载体构建文库。结果 :共获 2× 10 6重组子 ,插入比例为 4 8%。文库经抗杜氏利什曼原虫前鞭毛体全虫兔抗血清筛选 ,共筛 2× 10 4重组子 ,获 3个阳性表达克隆 ,表达产物的分子量分别为 :136k Da、160 k Da和 148k Da。结论 :已构建成的表达型杜氏利什曼原虫 cDNA文库 ,其插入比例和表达效率均较高。

关键词: 杜氏利什曼原虫, cDNA文库, 免疫筛选

Abstract: AIM:To isolate indivadual gene products and to detect the gene characterization of L.donovani. METHODS:cDNA was synthesized with the mRNA temple isolated from the L.donovani mastigotes in vitro and the cDNA
library was constructed with the λgt11 DNA arm as the vecters. RESUL TS:2×106 recombinants were produced and the
insert proportion was48%. 2×104 recombinants infected to E.coli Y1090r- were screened with a rabbit serum that vaccinated with L.donovani mastigotes as the probe, 3 positive expressing clones were detected, the molecular weight of the expressing peptides were 136 kDa, 160 kDa and 148 kDa, respectively. CONCLUSION: An expressing cDNA library of L.donovani was constructed, and its insert proportion and expressing rate were high.

Key words: Leishmania donovani, cDNA library, immune screening