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全细胞氧化还原生物传感器用于三桑检测:集成光谱光度和电化学检测
Himanshu Khandelwal1, Sakuntala Mutyala1, Minsoo Kim1
1School of Chemical Engineering, Pusan National University, Busan 46241, Republic of Korea.
Bioelectrochemistry (Amsterdam, Netherlands)
|February 4, 2025
概括
工程细菌通过监测细胞氧化还原平衡来检测有害有机污染物,如三桑. 这种新型生物传感器提供了一种敏感的方法,用于对内分泌干扰物的环境监测.
科学领域:
- 环境科学 环境科学
- 生物技术是生物技术.
- 生物化学 生物化学
背景情况:
- 有机污染物,包括双,乙氨基和triclosan,在医疗保健产品中普遍存在,并充当内分泌干扰剂.
- 这些化合物可以破坏细胞内氧化还原平衡,需要敏感的检测方法.
- 工程全细胞生物传感器为监测环境污染物提供了一个有希望的方法.
研究的目的:
- 开发和优化用于检测有机污染物的全细胞氧化还原生物传感器.
- 利用细菌SoxRS调节系统来感知污染物引起的氧化应激.
- 为了实现双重检测模式 (光谱光度和电化学) 以提高可用性.
主要方法:
- 使用SoxR-pSoxS和一个LacZ记者基因构建了等离子体,并引入大肠杆菌BL21.
- 采用O-nitrophenyl-β-galactopyranoside (ONPG) 和p-aminophenyl β-D-galactopyranoside (PAPG) 分别用于光谱和电化学检测.
- 激活生物传感器使用氧化还原诱导剂,如皮奥和甲基生物,测量β-galactosidase活动.
主要成果:
- 工程生物传感器 (pRUSL12) 响应了氧化还原诱导剂,表明系统的成功构建.
- 在诱导剂的存在下,特里克洛桑被确定为SoxR:pSoxS::lacZ系统的特定抑制剂.
- 发现皮奥西亚宁是一种更有效的诱导因子,用于检测三素.
- 生物传感器显示三桑的检测范围为100-400μg/L.
结论:
- 开发了一种全细胞氧化还原生物传感器,能够检测特定的有机污染物.
- 生物传感器有效监测细胞内氧化还原变化,并识别三.
- 这项技术为环境监测代谢氧化还原干扰和污染物识别提供了有价值的工具.
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