中国畜牧兽医

• 生物技术 • 上一篇    下一篇

沙门氏菌LAMP检测方法的建立

李佳桐1,王楠2,金贞爱3,许尧4,邵洪泽4,金鑫1   

  1. 1.延边大学农学院,吉林延边 133000;2.吉林省动物疫病预防控制中心,吉林长春 130062;3.吉林省珲春市动物卫生监督所,吉林珲春 133300;4.吉林省畜牧兽医科学研究院,吉林长春 130062)
  • 收稿日期:2013-08-16 出版日期:2014-03-20 发布日期:2014-05-15
  • 通讯作者: 金鑫。E-mail:jinxin@ybu.edu.cn
  • 作者简介:李佳桐(1989—),女,吉林人,硕士生,研究方向:预防兽医学。
  • 基金资助:

    吉林省食品安全地方标准制(修)订项目(DBS22/045-2012)。

Establishment of Loop-mediated Isothermal Amplification Assay for Detection of Salmonella

LI Jia-tong1, WANG Nan2, JIN Zhen-ai3, XU Yao4, SHAO Hong-ze4, JIN Xin1   

  1. (1.College of Agriculture, Yanbian University, Yanbian 133000, China;2.Jilin Province Center for Animal Disease Prevention and Control, Changchun 130062, China;3.Animal Health Supervision Institute of Hunchun City, Jilin Province, Hunchun 133300, China;4.Jilin Institute of Animal Husbandry and Veterinary Science Research, Changchun 130062, China)
  • Received:2013-08-16 Online:2014-03-20 Published:2014-05-15

摘要: 本试验旨在建立一种能快速、灵敏、特异的检测沙门氏菌的LAMP方法。据GenBank公布的沙门氏菌高度保守的STN基因序列设计引物,继而进行一系列的LAMP反应条件的优化、特异性、敏感性、稳定性、酶切试验,并将LAMP与常规PCR进行比较。结果显示,LAMP方法最佳反应温度为65 ℃,只扩增沙门氏菌,最低可检出浓度为101 CFU/mL,比常规PCR的最低检出浓度高1个数量级。本试验结果表明LAMP方法对沙门氏菌的检测特异性强、敏感性高、耗时短、方法简便,有望发展成为快速检测沙门氏菌的有效手段。

关键词: 环介导等温扩增; 沙门氏菌; 检测; STN

Abstract: The assay was aimed to establish a rapid, sensitive and specific method of loop-mediated isothermal amplification (LAMP) for the detection of Salmonella. According to the highly conserved STN gene of Salmonella reported in GenBank, we designed a set of primers, and then followed by a series of LAMP optimization of reaction conditions, specificity test, sensitivity test, stability test and enzyme test. The sensitivity of LAMP and conventional PCR were compared.The results showed that the optimal reaction temperature of LAMP was 65 ℃, when only amplification of Salmonella, the minimum detectable concentration was 101 CFU/mL, which was more than conventional PCR detection by one order of magnitude. The results showed that LAMP method had the qualities of specificity, high sensitivity, short time-consuming and convenience for the detection of Salmonella, which was expected to develop into an effective method

Key words: loop-mediated isothermal amplification; Salmonella; detection; STN