中国寄生虫学与寄生虫病杂志 ›› 1997, Vol. 15 ›› Issue (4): 193-197.

• 论著 •    下一篇

免疫筛选恶性疟原虫cDNA克隆

王燕妮1**; 谢毅2; 肖谷田2; 李明1; 毕惠祥1; 巢穗1; 王萍1; 李英杰1   

  1. 1 贵州省遵义医学院免疫学教研室; 第一军医大学疟疾免疫研究室 2 复旦大学遗传工程国家重点实验室
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:1997-08-30 发布日期:1997-08-30

IMMUNOSCREENING OF c DNA CLONESEXPRESSING PLASMODIUM FALCIPARUM ANTIGEN BY USING DIFFERENT ANTIBODIES

Wang Yanni1 * *; Xie Yi2; Xiao Gutian2; Li Ming1; Bi Huixiang1; Chao Sui1; Wang
Ping1; Li Yingjie1   

  1. 1 Department of Malaria Immunology, The First Military Medical University; Guangzhou 510515 ; Department of Immunology, Zunyi Medical College, Zunyi 563003 2 State Key Laboratory of Genetics and Genetic Engineering, Institute of Genetics, Fudan University, Shanghai 200433
  • Received:1900-01-01 Revised:1900-01-01 Online:1997-08-30 Published:1997-08-30

摘要:

目的 :获取恶性疟原虫 (海南株 )抗原的 c DNA克隆并进行初步鉴定。方法 :采用 dot-EL ISA,以兔免疫血清对恶性疟原虫 c DNA表达文库约 80万个重组噬斑进行筛选 ,并用 2 0株单克隆抗体和恶性疟患者血清对强阳性克隆进行再筛选。 PCR初步鉴定 17个强阳性克隆。结果 :兔免疫血清确定了 17个强阳性克隆, 患者血清检测到 11个阳性克隆 (含 8个强阳性 ) ,11株单抗与 9个 c DNA克隆呈阳性反应。 17个强阳性克隆均能扩增出大小在 30 0 bp- 2 .5kb左右的条带。结论 :已筛选到能与抗恶性疟原虫兔血清、单克隆抗体及患者血清产生特异性免疫反应的 c DNA克隆。

关键词: 恶性疟原虫, cDNA克隆, 抗体, 筛选

Abstract: AIM:To screen c DNA genes of Plasmodium falciparum(FCC/HN) and to make pre-
liminary identification.METHODS:8× 1 0 5 recombinants of Plasmodium falciparum cDNA library
were screened using rabbit immune sera in dot- ELISA;the strong- positive clones were screened
again using Mc Abs and sera from patients.Seventeenth strong- postive clones were preliminarily
identitified by PCR.RESULTS:Fifty- eight positive clones including1 7 strong- positive ones were
identified by immune sera of rabbits;eleven positive clones including 8 strong-positive ones were identified by sera of 9 patients. Nine clones were reacted with 11 strain s of 9McAbs. The inserts of 17 strong-positive clones were specifically amplified by PCR; their size ranged from ca. 300 bp-2. 5 kb. CONCLUSION: cDNA clones exp ressing F.falciparum antigen proteins were screened and would react with immune sera of rabbits, McAbs and sera of falciparum malaria patients.

Key words: Plasmodium falciparum, cDNA clone, antibody, screening