中国寄生虫学与寄生虫病杂志 ›› 1999, Vol. 17 ›› Issue (3): 5-145.

• 论著 • 上一篇    下一篇

恶性疟原虫云南株富含组氨酸蛋白II部分基因的克隆和序列分析

肖建华,李明,毕惠祥,王萍,李英杰
  

  1. 第一军医大学热带病研究所 广州 510515
  • 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

CLONING AND SEQUENCE ANALYSIS OF HISTIDINE RICH PROTEIN Ⅱ GENE FRAGMENT OF PLASMODIUM FALCIPARUM YUNNAN STRAIN

XIAO Jianhua *;LI Ming;BI Huixiang;WANG Ping;LI Yingjie   

  1. Institute of Tropical Medicine;The First Military Medical University;Guangzhou 510515
  • Received:1900-01-01 Revised:1900-01-01 Online:1999-06-30 Published:1999-06-30

摘要:   目的:测定恶性疟原虫云南株富含组氨酸蛋白 I I部分序列,了解该虫株与其它虫株 H R P I I基因序列的差异。方法:采用 P C R 方法特异性扩增 H R P I I基因片段,并将该基因片段克隆于 M 13 载体,用双脱氧链末端终止法进行测序,应用 P C G E N E软件对不同虫株恶性疟原虫 H R P I I进行基因序列分析。结果:我国云南株恶性疟原虫与 7 G8 及 D10 虫株 H R P I I基因有不同程度的差异,3 虫株间 H R P I I氨基酸序列同源性为70.3% ,核苷酸序列同源性为 68.6% 。结论:云南株与7 G8 及 D10 虫株 H R P I I基因存在差异。

关键词: 恶性疟原虫, 富含组氨酸蛋白II, 基因测序

Abstract:  AIM:To determine the nucleotide sequence of the partial gene of the histidine rich proteinⅡ (HRPⅡ) the Plasmodium falciparum PFD 3/YN and find out the differences of the HRPⅡ gene sequence between this isolate and other isolates.METHODS:The histidine rich protein Ⅱ gene fragment was amplified by polymerase chain reaction and cloned into M13 bacteriophage.M13 HRPⅡ single strand DNAs of three positive clones were extracted, respectively.The nucleotide sequence of the HRPⅡ gene fragment was determined by the dideoxy chain termination method.Using PCGENE software to compare and analyze the HRPⅡ gene sequence among the different isolates.RESULTS: Different degrees of diversity of the HRPⅡgene sequences were found among Plasmodium falciparum PFD 3/YN(from China)and two other isolates(7G8 from Brazil and D10 from Gambia).The HRPⅡ in the three isolates exhibited 70.3% homology in amino acid sequences and 68.6% homology in the nucleic acid sequences.CONCLUSION:There were differences in HRPⅡ gene sequence among the Plasmodium falciparum PFD 3/YN and two other isolates(7G8 and D10).

Key words: Plasmodium falciparum, histidine rich proteine Ⅱgene, gene sequencing