文献类型： 外文期刊
作者： Wang, Yuling 1 ; Peng, Cheng 2 ; Ding, Lin 2 ; Su, Zhixun 3 ; Chen, Xiaoyun 2 ; Wang, Xiaofu 2 ; Sun, Meihao 1 ; Xu, Junfeng 2 ;
作者机构： 1.Zhejiang Normal Univ, Coll Life Sci, Jinhua 321004, Peoples R China
2.Zhejiang Acad Agr Sci, State Key Lab Managing Biot & Chem Threats Qual &, Hangzhou 310021, Peoples R China
3.Ningbo Univ, Coll Food & Pharmaceut Sci, Ningbo 315800, Peoples R China
关键词： T-nos; nucleic acid detection; CRISPR; Cas12a; fluorescence visualisation; PCR
期刊名称：FOODS （ 影响因子：5.2； 五年影响因子：5.5 ）
ISSN：
年卷期： 2023 年 12 卷 3 期
页码：
收录情况： SCI
摘要： CRISPR/Cas12a technology is used for nucleic acid detection due to its specific recognition function and non-specific single-stranded DNA cleavage activity. Here, we developed a fluorescence visualisation detection method based on PCR and CRISPR/Cas12a approaches. The method was used to detect the nopaline synthase terminator (T-nos) of genetically modified (GM) crops, circumventing the need for expensive instruments and technicians. For enhanced sensitivity and stability of PCR-CRISPR/Cas12a detection, we separately optimised the reaction systems for PCR amplification and CRISPR/Cas12a detection. Eleven samples of soybean samples were assessed to determine the applicability of the PCR-CRISPR/Cas12a method. The method could specifically detect target gene levels as low as 60 copies in the reaction within 50 min. In addition, accurate detection of all 11 samples confirmed the applicability. The method is not limited by large-scale instruments, making it suitable for mass detection of transgenic components in plants in the field. In conclusion, we developed a new, accurate, rapid, and cost-effective method for GM detection.
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