Suitability of Real-Time PCR Methods for New Genomic Technique Detection in the Context of the European Regulations: A Case Study in Arabidopsis.

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ID: 282020
2025
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Abstract
PCR methods are widely applied for the detection of genetically modified organisms (GMOs) in Europe, facilitating compliance with stringent regulatory requirements and enabling the accurate identification and quantification of genetically modified traits in various crops and foodstuffs. This manuscript investigates the suitability of real-time PCR methods for detecting organisms generated through new genomic techniques (NGTs), specifically focusing on a case study using as a model gene-edited plant. Given the complexities of European regulations regarding genetically modified organisms (GMOs) and the classification of gene-edited plants, there is a pressing need for robust detection methods. Our study highlights the development and validation of a novel single-plex real-time PCR method targeting a specific single nucleotide polymorphism (SNP) in the gene modified using CRISPR-Cas9 technology. We emphasize the effectiveness of locked nucleic acid (LNA)-modified primers in improving specificity. The results demonstrate that while the LNA method successfully detected and quantified gene-edited Arabidopsis DNA, achieving absolute specificity remains a challenge. This study also addresses the significance of the cross-laboratory method for validation, demonstrating that the method developed for an SNP-modified allele can be performed in accordance with the precision and trueness criteria established by the European Network of GMO Laboratories (ENGL). Furthermore, we call for continued collaboration among regulatory agencies, academia, and industry stakeholders to refine detection strategies. This proactive approach is essential not only for regulatory compliance but also for maintaining public trust in the safe integration of gene-edited organisms into food products.
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Authors Zanatta, Caroline Bedin; Narendja, Frank; El Jawhary, Hilana; Abou-Sleymane, Gretta; Subburaj, Saminathan; Nodari, Rubens Onofre; Agapito-Tenfen, Sarah Zanon
Journal International journal of molecular sciences
Year 2025
DOI
10.3390/ijms26073308
URL
Keywords
single nucleotide polymorphism crispr gene editing genetically modified organism new genomic techniques single point mutation

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