南方医科大学学报 ›› 2006, Vol. 26 ›› Issue (04): 469-174.

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登革2型病毒NGC株基因组亚克隆的构建及其鉴定

贡树基; 曹虹; 赵卫; 张文炳; 周浩; 陈丽丹;   

  1. 南方医科大学公共卫生与热带医学学院微生物学系; 南方医科大学公共卫生与热带医学学院病毒研究所; 南方医科大学公共卫生与热带医学学院 微生物学系; 南方医科大学公共卫生与热带医学学院 微生物学系 广东 广州 510515; 广东 广州 510515;
  • 出版日期:2006-04-20 发布日期:2006-04-20
  • 基金资助:
    广州市科技攻关计划重点项目(2004Z2-E0214);广东省自然科学基金(32833)~~

Construction and identification of genomic cDNA subclones of dengue 2 virus NGC strain

GONG Shu-ji, CAO Hong, ZHAO Wei, ZHANG Wen-bing, ZHOU Hao, CHEN Li-dan Department of Microbiology, Institute of Virology, School of Public Health and Tropical Medicine, Southern Medical University, Guangzhou 510515, China   

  1. 南方医科大学公共卫生与热带医学学院微生物学系; 南方医科大学公共卫生与热带医学学院病毒研究所; 南方医科大学公共卫生与热带医学学院 微生物学系; 南方医科大学公共卫生与热带医学学院 微生物学系 广东 广州 510515; 广东 广州 510515;
  • Online:2006-04-20 Published:2006-04-20

摘要: 目的构建登革2型病毒NGC株基因组全序列的亚cDNA克隆,为进一步构建全长感染性cDNA克隆奠定基础。方法根据登革2型病毒NGC株基因组全序列中的酶切位点设计2对引物,从病毒感染的乳鼠脑中提取RNA,采用长链RT-PCR技术扩增出覆盖病毒基因组全长的2个cDNA片段,并克隆至pCR-XL-TOPO载体后测序。结果经酶切鉴定和序列测定表明,获得的cDNA克隆为登革2型病毒NGC株特异的。结论已成功构建出登革2型病毒NGC株基因组的2个cDNA亚克隆。 

Abstract: Objective To construct the cDNA subclones spanning the entire genome of dengue 2 virus NGC strain for further construction of full-length infectious viral cDNA clone. Methods Two pairs of primers were designed according to the restriction endonuclease sites in the viral genome of dengue 2 virus NGC strain. After viral RNA extraction from the brain of infected new-born mice, two parts of full-length viral cDNA were amplified by long RT-PCR and cloned into the vector pCR-XL-TOPO. The partial sequence of the recombinant plasmid was determined. Results and Conclusion Sequence analysis and digestion with restriction enzymes demonstrated that the two cDNA subclones were specific for dengue 2 virus NGC strain, suggesting the successful construction of the two cDNA subclones of dengue 2 virus NGC strain. 

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