中国寄生虫学与寄生虫病杂志 ›› 1999, Vol. 17 ›› Issue (2): 5-83.

• 论著 • 上一篇    下一篇

美洲钩虫及十二指肠钩虫细胞色素C氧化酶1基因测序

李铁华 1,詹斌1,John M Hawdon 2,龚昕1,肖树华1,单强1,冯正1Peter J Hotez2
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  1. 1 中国预防医学科学院寄生虫病研究所3 3  上海2000252 美国耶鲁大学医学院公共卫生与流行病学系 N ew Haven CT 06520
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:1999-04-30 发布日期:1999-04-30

SEQUENCING OF CYTOCHROME C OXIDASE 1 GENE OF ANCYLOSTOMA DUODENALE AND NECATOR AMERICANUS *

LI Tiehua 1;ZHAN Bin 1;John M Hawdon 2;GONG Xin 1;XIAO Shuhua 1 SHAN Qiang 1;FENG Zheng 1;Peter J Hotez 2

  

  1. 1 Institute of Parasitic Diseases;Chinese Academy of Preventive Medicine **;Shanghai 200025 2 Medical Helminthology Labora
  • Received:1900-01-01 Revised:1900-01-01 Online:1999-04-30 Published:1999-04-30

摘要:   目的:比较美洲钩虫及十二指肠钩虫线粒体细胞色素C氧化酶1(CO1)基因序列,确定两种钩虫间CO1基因差异。方法:现场采集钩虫成虫样本,蛋白酶K消化抽提线粒体基因组DNA,PCR方法扩增CO1基因,DNA测序及分析。结果:PCR扩增获得约700bp美洲钩虫及十二指肠钩虫CO1基因片段,其序列比较显示两种钩虫CO1基因同源性达89.7%,存在特定的核苷酸差异。结论:CO1基因可作为鉴别两种人体钩虫虫种标记性基因。

关键词: 细胞色素C氧化酶1, DNA序列, 美洲钩虫, 十二指肠钩虫

Abstract:  AIM: To identify the genetic diversity between Ancylostoma duodenale and Necator americanus. METHODS : Mitochondrial cytochrome C oxidase subunit 1 (CO1) gene was amplified from genomic DNA of human hookworms collected from infected patients in Hejiang County, Sichuan Province , and the purified PCR products were directly sequenced by using Licor auto sequencer. RESULTS: The PCR products were about 700 bp. Alignment of CO1 gene fragment sequences showed 89 7% similarity between Ancylostoma duodenale and Necator americanus, but still certain nucleotide variations (10 3%) existed. CONCLUSION: CO1 gene sequence can be used as a marker to identify the two species of human hookworms.

Key words: Cytochrome C oxidase1, DNA sequence, Necator americanus, Ancylostoma duodenale