中国寄生虫学与寄生虫病杂志 ›› 2008, Vol. 26 ›› Issue (2): 6-109.

• 论著 • 上一篇    下一篇

新的具有高度多态性的日本血吸虫微卫星位点的鉴定

殷明波1,2,朱根凤3,张祥林3,徐斌2,莫筱瑾2,孙胜强1,2,王升跃3,David Blair4,胡薇2,冯正2 *   

  1. 1 华东理工大学,生物工程学院,上海 200237;2 中国疾病预防控制中心寄生虫病预防控制所,世界卫生组织疟疾、血吸虫病和丝虫 病合作中心,卫生部寄生虫病原与媒介生物学重点实验室,上海 200025;3 国家人类基因组南方研究中心,上海 201323;4 詹姆斯库克大学,海洋与热带生物学院,汤斯维尔市 4811.
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2008-04-30 发布日期:2008-04-30
  • 通讯作者: 冯正

New Polymorphic Microsatellite Loci Identified Using Genomic Resource for Schistosoma japonicum

YIN Ming-bo1,2,ZHU Gen-feng3,ZHANG Xiang-lin3,XU Bin2,MO Xiao-jin2,SUN Sheng-qiang1,2,WANG Sheng-yue3,David Blair4,HU Wei2,FENG Zheng2 *   

  1. 1 College of Biotechnology,East China University of Science and Technology,Shanghai 200237,China; 2 National Institute of Parasitic Diseases,Chinese Center for Disease Control and Prevention,WHO Collaborating Centre for Malaria,Schistosomiasis and Filariasis,Shanghai 200025,China;3 China National Human Genome Research Center at Shanghai,Shanghai 201323,China;4 School of Marine and Tropical Biology,James Cook University,Townsville,Queensland 4811,Australia
  • Received:1900-01-01 Revised:1900-01-01 Online:2008-04-30 Published:2008-04-30
  • Contact: FENG Zheng

摘要: 目的 从基因组序列中选择和设定新的、可用于研究日本血吸虫多态性的微卫星位点。 方法 672个日本血吸虫标本取自安徽、江西、湖南、湖北和四川等5省的7个流行区现场。根据日本血吸虫基因组数据库中的初始数据设计引物,对标本的17个全新的日本血吸虫微卫星位点进行分析。用GenMapper 4.0 软件(Applied Biosystems)进行初始数据处理,用GenClone 1.0软件计算种群内各标本的遗传距离;用GenAlEx6软件统计等位基因的变化;用GenClone 1.0 软件计算种群内各标本的遗传距离;用UPGMA 谱系图分析种群间遗传距离。 结果 17个微卫星位点均呈现多态性。对江西都昌种群的这17个位点进行分析,标本之间的遗传距离大多为25~32,显示江西都昌种群内各个标本之间的遗传差异明显。对7个地区种群分析的结果显示种群间的差异较为明显。类平均法系统聚类分析(UPGMA) 谱系图显示,江西都昌、安徽铜陵、湖北沙市和湖南常德的种群同为一簇,其遗传距离为0.017 8~0.036 3;安徽贵池和湖南岳阳的为另外一簇,其遗传距离为0.024 7;而四川西昌单独为一簇,与其他两簇的遗传距离为0.019 2~0.069 3。 结论 选择的17个微卫星位点可作为研究日本血吸虫种群遗传学的有效标记,并揭示中国大陆该虫种存在着复杂的遗传变异。

关键词: 日本血吸虫, 微卫星, 多态性, 中国

Abstract: Objective To identify new microsatellite loci from genome sequence database for the study of polymorphicsm of Schistosoma japonicum. Methods Schistosoma japonicum isolates were obtained from seven endemic sites in China: Tongling and Guichi counties of Anhui Province, Duchang county of Jiangxi Province, Changde and Yueyang Cities of Hunan Province, Shashi City of Hubei Province, Xichang City of Sichuan Province. In order to study the genetic variance, genomic DNAs of 96 individual adult worms were screened against 17 new Schistosoma japonicum microsatellites and the raw data were analyzed by GenMapper 4.0. Furthermore, the varieties of alleles were inverstigated using GenAlEx 6 and genetic distances within a subpopulation (GenClone) and among populations(UPGMA, MEGA 3.1) were analyzed. Results High levels of polymorphism were found between and within population samples, and significant genetic diversity was observed among the seven subpopulations.Within Jiangxi population, most genetic distances (17 loci) among samples range from 25 to 32, indicating a significant genetic diversity. There are three clusters among the seven populations: Jiangxi, Tonglin, Shashi and Changde population, with the genetics distances ranging from 0.017 8 to 0.036 3; Guichi and Yueyang population belong to another cluster, with the genetic distance of 0.024 7; However, Xichang population is an unique group. Its genetic distances to other populations are notable with a range from 0.019 2 to 0.069 3. Conclusion The 17 new polymorphic microsatellites identified may be used as suitable markers for the study on population genetics of Schistosoma japonicum and the genetic variance of the worms seems to be complicated.

Key words: Schistosoma japonicum, Microsatellite, Polymorphism, China