用多重探针实时PCR检测CRISPR-Cas9编辑番茄的检测方法,单核酸删除,并确认非转基因性:一个案例研究
Monika Singh1, Shiwani1, Raghavendra Aminedi1
1Division of Genomic Resources, ICAR-National Bureau of Plant Genetic Resources, New Delhi 110 012, India.
Journal, genetic engineering & biotechnology
|December 12, 2025
概括
检测基因编辑 (GE) 粮食作物,比如番茄的保质期提高,需要精确的方法. 这项研究开发了一种敏感的实时PCR试验,以准确识别转基因植物中的小遗传修饰,以便进行监管验证.
科学领域:
- 农业生物技术 农业生物技术
- 分子生物学分子生物学
- 食品科学 食品科学 食品科学
背景情况:
- 基因编辑 (GE) 粮食作物在没有显著的遗传改变的情况下提供了进步,但全球监管讨论是复杂的.
- 准确检测转基因植物对于监管合规和验证开发商的要求至关重要,特别是对于精确的编辑,如单核酸变化.
研究的目的:
- 开发和验证一种高效的检测方法,用于基因编辑番茄线,单基因对删除.
- 为监管机构提供一个工具,以验证基因编辑和在转基因作物中追踪转基因元素.
主要方法:
- 一个涉及快速循环介导同热放大 (LAMP) 和聚合酶链反应 (PCR) 的逐步策略,用于Cas9基因的初始查.
- 使用多重 TaqMan® 实时 PCR 与双探针针对编辑和未编辑序列的单点突变的验证.
- 与野生类型相比,缺少信号表明突变存在的负选择方法.
主要成果:
- 开发的多重实时PCR方法表现出高灵敏度,能够检测0.1%的目标GE番茄系.
- 该试验成功地验证了Solanum lycopersicum乳酸酶 (SlPL) 基因中的单点删除.
- 提出了一种方法来确认非转基因性质,使用实时PCR针对批准的转基因番茄事件中常见的查元素进行实时PCR.
结论:
- 开发的多重实时PCR测定是一种敏感且高效的工具,用于检测转基因植物中的单核酸编辑.
- 这种方法可以支持全球监管机构在食品可追溯性,编辑验证和跟踪基因编辑作物 (SDN-1和SDN-2类型) 中的转基因元素方面.
- 该方法提供了一种可靠的方法来确认转基因食品的遗传状态.
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