›› 2010, Vol. 37 ›› Issue (6): 164-167.

• 疾病防治 • 上一篇    下一篇

利什曼原虫实时荧光定量PCR方法的建立

张瑞岩1,商立民1,张宁2,刘全1,吴永魁1   

  1. (1.解放军军事医学科学院军事兽医研究所,长春 130062; 2.吉林大学畜牧兽医学院,长春 130062)
  • 收稿日期:1900-01-01 修回日期:2010-03-13 出版日期:2010-06-20 发布日期:2010-06-20
  • 通讯作者: 刘全

Development of the Method for Detection and Quantitation of Leishmania with Real-time Fluorescent Quantitative PCR

ZHANG Rui-yan1,SHANG Li-min1,ZHANG Ning2,LIU Quan1,WU Yong-kui1   

  1. (1. Military Veterinary Institute,Academy of Military Sciences of PLA,Changchun 130062,China; 2. College of Animal Science and Veterinary Medicine,Jilin University,Changchun 130062,China)
  • Received:1900-01-01 Revised:2010-03-13 Online:2010-06-20 Published:2010-06-20
  • Contact: LIU Quan

摘要: 以利什曼原虫的小环状动基体DNA(Leishmania kDNA)为靶基因,建立实时荧光定量PCR检测利什曼原虫的方法。根据GenBank报道的利什曼原虫小环状动基体DNA保守序列设计合成特异性引物,经PCR扩增后与pMD18-T载体连接,转化入大肠杆菌DH5α感受态细胞。挑选阳性克隆重组质粒经鉴定正确后,作为模板建立SYBR-Green Ⅰ荧光定量PCR标准曲线和熔解曲线。结果构建的标准曲线线性关系良好,相关系数为0.996,而且特异性强,重复性好。本研究成功建立了实时荧光定量PCR检测利什曼原虫的方法,该方法可用于利氏曼原虫病的诊断、流行病学监测和科学研究。

关键词: 利氏曼原虫; 实时荧光定量PCR; 小环状动基体DNA

Abstract: To establish a SYBR-Green I fluorescent quantitative PCR method to detect the minicircles of the kinetoplast DNA of Leishmania,special primers were designed and synthesized to this conserved sequence. The special fragment was cloned into pMD18-T vector after PCR amplification,and then was transformed into E.coli DH5α. After the positive recombinant plasmid was identified,it was used as quantitative template to generate standard curve and melt curve. Results showed that the standard curve had a good linear relationship between cycle threshold(Ct) and template concentration,and the correlation coefficient was 0.996. We have successfully established a SYBR-Green I fluorescent quantitative PCR method to detect Leishmania,which can be used in the diagnosis and epidemiological surveillance of Leishmaniasis.

Key words: Leishmania; real-time fluorescent quantitative PCR; kDNA

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