验证液体微阵列技术与多重PCR相结合,用于快速检测沙门氏菌中四个类素抗性基因
Xin Dong1, Dan Wu1, Ying Zhao1
1Pathogen Inspection Center, Changzhou Center for Disease Prevention and Control, 203 TaiShan Road, Changzhou 213000 Jiangsu, China.
Letters in applied microbiology
|November 9, 2025
概括
一种新的多重PCR和液晶芯片方法可以快速检测食品中的沙门氏菌及其等离子体介导的醇抗性 (PMQR) 基因. 这种技术具有很高的灵敏度和特异性,对于食品安全监测至关重要.
科学领域:
- 食品微生物学 食品微生物学
- 分子生物学分子生物学
- 抗微生物耐药性 抗微生物耐药性
背景情况:
- 沙门氏菌带来了严重的食物传播疾病风险,特别是在中国.
- 等离子体介导的类素耐药性 (PMQR) 是沙门氏菌抗菌耐药性的主要驱动因素.
- 有效的检测方法对于控制沙门氏菌及其耐药性传播至关重要.
研究的目的:
- 开发沙门氏菌 (invA基因) 和关键PMQR基因的快速检测方法.
- 评估开发的试验的灵敏度,特异性和可重复性.
- 为加强食品安全和抗菌素耐药性监测提供一个工具.
主要方法:
- 多重复合PCR与液晶芯片技术相结合.
- 检测沙门氏体基因 invA 和 PMQR 基因 (qnrS, aac(6') -Ib-cr, oqxA, oqxB).
- 评估检测极限,特异性,可重复性和模拟样本验证.
主要成果:
- 该方法在5CFU/mL时检测到inVa和qnrS.
- 对 aac(6') -Ib-cr, oqxA 和 oqxB 的检测极限分别为 25,10 和 10 CFU/mL.
- 实现了高特异性,可重复性 (CV<5%) 和与传统PCR100%的一致性.
结论:
- 开发的多重PCR-液体芯片测定是一种敏感和特定的工具,用于检测食品传播的沙门氏菌和PMQR基因.
- 这种方法支持快速检测和监测食品中的抗菌素耐药性.
- 它为食品安全和公共卫生倡议提供了宝贵的技术支持.
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