抗生素诱导的自催化DNA电路用于基于三重信号放大策略的恩罗夫洛克萨检测
Junhua Chen1, Gu Shi2, Chong Yan3
1School of Life and Health Technology, Dongguan University of Technology, Dongguan, 523808, China.
Biosensors & bioelectronics
|February 2, 2026
概括
这项研究介绍了一种用于检测enrofloxacin (ENR) 的新型DNA电路生物传感器. 无酶生物传感器为食品和环境样本中的抗生素残留监测提供了高灵敏度和选择性.
科学领域:
- 生物技术是生物技术.
- 生物感应是一种生物感应.
- 分子诊断学 分子诊断
背景情况:
- 抗生素残留物,如恩罗夫洛克萨 (ENR),对食品和环境安全构成风险.
- 现有的检测方法可能缺乏灵敏度,选择性或需要复杂的程序.
研究的目的:
- 开发一种高度敏感和选择性的自催化DNA电路生物传感器,用于检测ENROFLOXACIN.
- 为了实现有效的信号放大,可靠的抗生素残留监测.
主要方法:
- 使用头DNA探头和体识别探头构建自催化DNA电路.
- 利用抗生素诱导的触发DNA释放来启动级联反应,形成三向DNA结.
- 采用Mg2+依赖的DNA酶,通过基板裂变进行信号放大.
主要成果:
- 该DNA电路生物传感器实现了对enrofloxacin的超敏感检测极限25.8 fM.
- 在检测enrofloxacin时表现出高灵敏度和选择性.
- 成功应用于真实鱼类和水样,具有可靠和准确的结果.
结论:
- 开发的生物传感器提供了一种无酶,高效和稳健的方法来检测恩罗夫洛克萨.
- 这种自催化DNA电路生物传感器是监测环境和食品样本中的抗生素残留物的有希望的工具.
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