生物技术通报 ›› 2020, Vol. 36 ›› Issue (5): 68-73.doi: 10.13560/j.cnki.biotech.bull.1985.2019-1002

• 生物分析方法与标准物质专题(专题主编:李亮 副研究员) • 上一篇    下一篇

转基因大豆MON89788芯片式数字PCR定量方法的建立

杨镇州, 刘刚, 梁文   

  1. 上海市计量测试技术研究院化学与电离辐射所生物计量实验室,上海 201203
  • 收稿日期:2019-10-19 出版日期:2020-05-26 发布日期:2020-06-03
  • 作者简介:杨镇州,男,硕士,助理工程师,研究方向:核酸检测;E-mail:yangzz@simt.com.cn
  • 基金资助:
    国家科技重大专项项目转基因生物新品种培育(2018ZX0801112B),国家自然科学面上基金项目(21775104)

A Quantitative Method for Genetically Modified Soybean LineMON89788 Using Microchip Digital PCR

YANG Zhen-zhou, LIU Gang, LIANG Wen   

  1. Lab of Biometrology,Chemical and Ionizing Radiation MetrologyInstitute,Shanghai Institute of Measurement and Testing Technology,Shanghai 201203
  • Received:2019-10-19 Published:2020-05-26 Online:2020-06-03

摘要: 针对抗虫耐除草剂大豆转基因品系MON89788,从转基因植物基因组DNA的提取、核酸模板的质量和浓度控制、引物探针的筛选、PCR反应过程的建立等方面建立了一套完整的转基因大豆芯片式dPCR定量检测方法。本实验也对该方法的重复性和定量检测限进行考察。10组5%转基因品系大豆MON89788样品定量重复性RSD在1.17%-9.97%之间,均满足国际上转基因定量结果RSD小于25%的要求。用该方法对转基因含量为5%、1%、0.1%的大豆MON89788进行定量检测,其定量结果为5.20%、0.94%和0.11%,RSD分别为6.2%、3.6%和15.2%。该检测方法的定量限达到0.1%,能满足欧盟对转基因定量标识0.9%的要求。将本实验建立的方法用于转基因大豆的定量检测,能为规范我国转基因监管工作的实施提供强有力的技术支撑。

关键词: 转基因大豆, 数字PCR, 大豆MON89788

Abstract: A microchip digital PCR(dPCR)quantitative method for insect-resistant and herbicide-resistant genetically modified soybean lineMON89788was developed and several critical experimental conditions were studied,including genomic DNA extraction,quality and concentration control of nucleic acid template,screening of the primer probes,PCR program,etc.The reproducibility and quantitative detection limit of the method were also investigated.The quantitative repeatability RSD ranged from 1.17% to 9.97% when a 5% GM soybean(MON89788)sample was analyzed,andall of them met the international requirement that the RSD of transgenic quantitative results should be < 25%. The quantitative results of MON89788samples containing 5%,1% and 0.1% GM were 5.20%,0.94% and 0.11% and the RSD was 6.2%,3.6% and 15.2%,respectively. The limit of quantificationwas 0.1%,which fully satisfiedthe EU’s GM quantitative labeling limit(0.9%). Applying the method established in this experiment in the quantitative detection of transgenic soybeans may provide strong technical support for standardizing the implementation of transgenic supervision in China.

Key words: genetically modified soybean, digitalPCR, soybean MON89788