A temperature-tolerant multiplex elements and genes screening system for genetically modified organisms based on dual priming oligonucleotide primers and capillary electrophoresis. (15th August 2017)

• Record Type: Journal Article
• Authors: Fu, Wei; Wei, Shuang; Wang, Chenguang; Du, Zhixin; Zhu, Pengyu; Wu, Xiyang; Wu, Gang; Zhu, Shuifang
• Is Part Of: Food chemistry. Volume 229(2017)
• Page Start: 396
• Page End: 402
• Publication Date: 2017-08-15
• Subjects: DPO primers -- High-throughput -- GMO screening -- Wide coverage -- Capillary electrophoresis; Food -- Analysis -- Periodicals; Food -- Composition -- Periodicals; 664
• DOI: 10.1016/j.foodchem.2017.02.088
• Languages: English
• ISSNs: 0308-8146

Abstract

Highlights: A screening system based on dual priming oligonucleotide primers was developed. The DPO primers are also temperature-tolerant. The method has a wide coverage for genetically modified events. The method achieved a 0.5 ng sensitivity. Abstract: High throughput screening systems are the preferred solution to meet the urgent requirement of increasing number of genetically modified organisms (GMOs). In this study, we have successfully developed a multiplex GMO element screening system with dual priming oligonucleotide (DPO) primers. This system can detect the cauliflower mosaic virus 35S ( CaMV 35S ), terminator of nopaline synthase gene ( NOS ), figwort mosaic virus 35S ( FMV 35S ) promoter, neomycin phosphotransferaseII ( NPTII ), Bt Cry 1Ab, phosphinothricin acetyltransferase genes ( bar ) and Streptomyces viridochromogenes ( pat ) simultaneously, which covers more than 90% of all authorized GMO species worldwide. This system exhibits a high tolerance to annealing temperatures, high specificity and a limit of detection equal to conventional PCR. A total of 214 samples from markets, national entry-exit agencies, the Institute for Reference Materials and Measurement (IRMM) and the American Oil Chemists' Society (AOCS) were also tested for applicability. This screening system is therefore suitable for GMO screening.