畜牧兽医学报 ›› 2014, Vol. 45 ›› Issue (8): 1324-1329.doi: 10.11843/j.issn.0366-6964.2014.08.017

• 预防兽医 • 上一篇    下一篇

羊莫氏巴贝斯虫细菌人工染色体(BAC)文库的构建

张浩浩1,3,陈龙欣2,3,曹阳3,陈瑛3,关贵全1*,马润林2,3*   

  1. (1.中国农业科学院 兰州兽医研究所 家畜疫病病原生物学国家重点实验室 甘肃省动物寄生虫病重点实验室,兰州 730046;2.郑州师范学院,郑州 450044;3.中国科学院遗传与发育生物学研究所 分子发育生物学国家重点实验室,北京 100101)
  • 收稿日期:2014-01-25 出版日期:2014-08-23 发布日期:2014-08-23
  • 通讯作者: 关贵全,副研究员,E-mail:guanguiquan@163.com;马润林,研究员,E-mail:rlma@genetics.ac.cn
  • 作者简介:张浩浩(1988-),男,河南济源人,硕士生,主要从事寄生虫分子生物学研究,E-mail:haohaozhang2012@163.com,Tel:0931-8342681
  • 基金资助:

    家畜疫病病原生物学国家重点实验室开放课题(SKLVEB2012KFKT001)

Construction of Bacterial Artificial Chromosome (BAC) Library of Ovine Babesia motasi

ZHANG Hao-hao1,3,CHEN Long-xin2,3,CAO Yang3,CHEN Ying3,GUAN Gui-quan1*,MA Run-lin2,3*   

  1. (1.State Key Laboratory of Veterinary Etiological Biology/Key Laboratory of Veterinary Parasitology of Gansu Province/Lanzhou Veterinary Research Institute,Chinese Academy of Agricultural Sciences,Lanzhou 730046,China;2.Zhengzhou Normal University,Zhengzhou 450044,China;3.Institute of Genetics and Developmental Biology,Chinese Academy of Sciences,Beijing 100101,China)
  • Received:2014-01-25 Online:2014-08-23 Published:2014-08-23

摘要:

为丰富巴贝斯虫基因组信息,选用感染中国羊的莫氏巴贝斯虫临潭株(Babesia motasi Lintan)为对象,将纯化的红细胞阶段虫体裂殖子包埋于低熔点琼脂糖,用蛋白酶K进行消化处理,得到巴贝斯虫基因组DNA,利用脉冲场凝胶电泳(PFGE)分离大片段基因组DNA,将其与CopyControl pCC1BAC Cloning-ready Vector进行连接并转化到EPI300TM Escherichia coli 感受态细胞,成功构建了含有34 560 个克隆的莫氏巴贝斯虫临潭株基因组细菌人工染色体(BAC)文库;文库的平均插入片段大小为70 kb,基因组覆盖度为×137,空载率均低于3%,且克隆稳定。该BAC文库的构建,为进一步绘制精细物理图谱、基因组测序、进化及利用比较基因组学筛选致病基因等方面的研究奠定了基础。

Abstract:

 To enrich the genomic information,the merozoites of ovine Babesia motasi Lintan were embedded in low-melting-point (LMP) agarose and subsequently digested with proteinase K to get their high-quality megabase size genomic DNA.Then the large size DNA fragments isolated by pulse-field gel electrophoresis (PFGE) were ligated to CopyControl pCC1BAC Cloning-ready Vector.The present results showed that the bacterial artificial chromosome (BAC) library containing 34 560 clones was successfully constructed by transformation of the ligated DNA into EPI300TM Escherichia coli.In B.motasi Lintan BAC library,the average length of the insert DNA fragment was 70 kb and covers ×137 B.motasi Lintan genome.The BAC library in which the empty clone was less than 3% and the clones were stable should contribute to fine physical mapping,genome sequencing,and evolution and virulence genes derived from comparative genomics of Babesia species and so on.

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