食品科学

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应用依赖解旋酶DNA扩增技术检测转基因大豆

章晶晶1,王 赞1,张翠侠1,马超峰1,周 巍1,2,*,张 岩1   

  1. 1.河北省食品检验研究院,河北省食品安全重点实验室,河北 石家庄 050071;
    2.河北农业大学食品科技学院,河北 保定 071000
  • 出版日期:2016-02-25 发布日期:2016-02-23
  • 通讯作者: 周 巍
  • 基金资助:

    国家自然科学基金面上项目(31401584)

Detection of Genetically Modified Soybean by Helicase-Dependent Isothermal DNA Amplification Assay

ZHANG Jingjing1, WANG Zan1, ZHANG Cuixia1, MA Chaofeng1, ZHOU Wei1,2,*, ZHANG Yan1   

  1. 1. Hebei Food Safety Key Laboratory, Hebei Food Inspection and Research Institute, Shijiazhuang 050071, China;
    2. College of Food Science and Technology, Agricultural University of Hebei, Baoding 071000, China
  • Online:2016-02-25 Published:2016-02-23
  • Contact: ZHOU Wei

摘要:

目的:基于依赖解旋酶DNA恒温扩增(helicase-dependent isothermal DNA amplification,HDA)技术,建立快速检测转基因大豆的方法。方法:采用以CaMV35S、NOS、CP4-EPSPS 3 种外源基因和内源基因Lectin(大豆凝集素基因)为目的片段设计4 对特异引物,建立反应体系,通过HDA方法对内源基因和3 种外源基因的检测特异性和灵敏度进行实验,并对结果进行同源性分析。结果:建立了转基因大豆HDA检测法,检测特异性良好,3 种外源基因的检出限为0.2%。结论:转基因大豆的HDA检测方法具有普通聚合酶链式反应的特异、灵敏等特点,并且对仪器要求更低,极适合基层实验室使用,具有广阔的应用前景。

关键词: 依赖解旋酶DNA扩增, 转基因大豆, 检测

Abstract:

Objective: To establish a new rapid method to detect genetically modified soybean based on helicase-dependent
isothermal DNA amplification (HDA). Methods: With four highly specific sets of primers synthesized to target genes
including Lectin in soybean and CaMV35S, NOS and CP4-EPSPS foreign genes, PCR reaction system was established. The
specificity and sensitivity of the PCR method were tested based on HDA and homology analysis was performed. Results: The
helicase-dependent isothermal DNA amplification method for the rapid detection of genetically modified soybean has been
established. The detection limits of CaMV35S, NOS and CP4-EPSPS genes in genetically modified soybeans by HDA were
all 0.2%. Conclusion: HDA is a rapid, user-friendly, specific and sensitive method for the detection of genetically modified
soybean, and is very suitable for use in grassroots laboratories with a broad prospect.

Key words: helicase-dependent isothermal DNA amplification (HDA), genetically modified soybean, detection

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