一个结构优化的BRET生物传感器,用于快速,无稀释地量化废水中的高强度酸盐
Kanglin Zhao1, Hao Bai2, Ziqi Sha1
1State Key Laboratory of Water Pollution Control and Green Resource Recycling, School of Environment, Nanjing University, Nanjing, Jiangsu, 210023, China.
Biosensors & bioelectronics
|January 26, 2026
概括
一个新的生物发光共振能量转移 (BRET) 生物传感器准确地量化废水中的高酸盐含量,而无需稀释. 这种创新的传感器提供了一种快速有效的环境监测方法.
科学领域:
- 生物技术是生物技术.
- 环境科学 环境科学
- 分析化学 分析化学
背景情况:
- 废水中高度的酸盐会给环境带来重大风险.
- 准确和快速的酸盐检测方法对于有效的废水管理至关重要.
- 现有的方法通常需要样品稀释,增加复杂性和时间.
研究的目的:
- 开发一种新的生物传感器,以快速,无稀释地量化废水中的高强度酸盐.
- 通过计算和结构指导优化生物传感器性能.
- 为了验证生物传感器的准确性和效率与既有方法相比.
主要方法:
- 开发一种BRET生物传感器,将大肠杆菌酸盐受体NarX与NLuc/金星记者对集成在一起.
- 通过计算引导的突变发生 (NarXV138W) 和结构告知终端截断进行优化.
- 在模拟和真实水样中使用紫外线可见光谱仪进行测试参数调整和验证.
主要成果:
- 优化的BRET生物传感器准确地从0.0781到2.5710μg/L (作为N) 的酸盐量化,具有高线性 (R2 = 0.999).
- 测量速度很快 (∼500秒平衡),在温和的水性条件下进行,不需要稀释.
- 结果显示,在各种水样中,与紫外线可见光谱光度学有很强的一致性.
结论:
- 本研究介绍了首个基于BRET的生物传感平台,用于工业范围的酸盐检测.
- 开发的传感器简单,比度和试剂效率高,适合在现场监测.
- 观察到的依赖酸盐的结构变化支持联体诱导的信号机制,验证了传感器的设计.
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