中国寄生虫学与寄生虫病杂志 ›› 1997, Vol. 15 ›› Issue (1): 5-25.

• 论著 • 上一篇    下一篇

恶性疟原虫(海南株)cDNA表达文库的构建及初步鉴定

王燕妮1,肖谷田2,毕惠祥1,李明1,金丽娟2,李英杰1,谢毅2   

  1. 1 第一军医大学疟疾免疫研究室 广州5105152 复旦大学遗传工程国家重点实验室 上海200433
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:1997-02-28 发布日期:1997-02-28

CONSTRUCTION AND PRIMARY CHARACTERIZATION OF ERYTHROCYTIC PLASMODIUM FALCIPARUM (FCC/HN) cDNA EXPRESSION LIBRARY

Wang Yanni1, Xiao Gutian2, Bi Huixiang1, Jin Lijuan2, LiMing1, Li Yingjie1, Xie Yi2   

  1. 1 Department of Malaria Immunology, The First Military Medical University, Guangzhou 5105152 State Key Laboratory of Genetic Engineering, Institute of Genetics, Fudan University, Shanghai 200433
  • Received:1900-01-01 Revised:1900-01-01 Online:1997-02-28 Published:1997-02-28

摘要:

目的: 构建恶性疟原虫cDNA 表达文库。方法: 采用“一步法”提取红内期恶性疟原虫1224μg RNA , 经Oligo (dT) 纤维素柱纯化得到35.84μg poly (A)+ mRNA。取10μg mRNA反转录得到1.75μg 平端双链cDNA , 与含EcoRI, NotI, SalI 酶切位点的衔接头连接后, 经分级分离柱纯化回收到200ng 大小主要在500 bp - 7 kb 左右的cDNA 片段。取50ng cDNA 与λgt11噬菌体臂连接后体外包装, 完成建库。并采用PCR 方法初步鉴定该文库。结果: 已构建一个含106个重组子的cDNA 表达文库。结论: 文库容量及插入cDNA 片段的大小适合于进一步研究。

关键词: 恶性疟原虫, 红内期, cDNA 表达文库

Abstract:

AIM: To construct a cDNA expression library from erythrocytic Plasmodium falciparum (FCC/HN). METHODS: 1224 μg total RNA and 35.84 μg poly (A)+ mRNA have been successively obtained from the blood-stage Plasmodium falciparum mainly consisting of trophozoites using“single-step method”and by chromatography on oligo-(dT) cellulose. With the reverse transcriptase (M-MLV ) , 10 μg mRNA was synthesized into 1.75 μg blunt cDNA. After the cDNA was ligated to EcoRI (NotI, SalI) adapter and purified by fractionation, 200 ng cDNA of about 500 bp - 7 kb was collected. Of which 50 ng cDNA was ligated into λgt11 phage particles and was packaged with the packagen extract system in vitro. This library was characterized primarily by PCR. RESULTS: A cDNA library containing 106 recombinants has been constructed. CONCLUSION: The capacity of this library and the size of cDNA is suitable for further study.

Key words: Plasmodium falciparum, blood-stage parasites, cDNA expression library