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抗体功能化电容传感器用于无标签和实时检测细菌和抗生素敏感性
Zeeshan1, Sadra Bahrami2, Sungsu Park2
1Department of Electronic Engineering, Gachon University, 1342 Seongnamdaero, Seongnam-si, Gyeonggi-do, 13120, South Korea.
Talanta
|March 1, 2024
概括
一种新型阻隔度生物传感器准确地实时检测细菌生长和抗生素易感性. 这种快速抗微生物敏感性测试 (AST) 平台在检测食品传播病原体方面表现有前途.
科学领域:
- 生物传感器技术技术
- 微生物学 微生物学
- 抗微生物耐药性 抗微生物耐药性
背景情况:
- 传染病和抗生素耐药性的有效管理需要准确的抗生素敏感性测试 (AST).
- 目前的AST方法可能耗时,延迟了向治疗.
- 需要快速实时监测细菌生长和对抗生素的反应.
研究的目的:
- 开发一个实时阻隔度生物传感器,用于细菌识别和抗生素敏感性监测.
- 评估生物传感器在检测常见的食源性病原体,如金黄色葡萄球菌,大麦芽菌和白菌等方面的性能.
- 为了证明生物传感器在现实世界样本中的实用性,例如牛奶.
主要方法:
- 使用金色的8通道圆盘形微电极阵列,其功能与特定抗体相结合.
- 采用阻抗测量测量来检测细菌的存在和生长.
- 监测电容的变化,以评估细菌对抗生素的反应,并确定最小抑制度 (MIC).
主要成果:
- 在1小时内成功检测出Staphylococcus aureus,Bacillus cereus和Micrococcus luteus,其度低至10 CFU/ml.
- 从10到10^4 CFU/ml表现出极好的线性反应,检测极限低 (0.95-1.22 CFU/mL).
- 对抗生素敏感性的实时监测显示,在MIC以上的容量下降,从而能够确定CC50值,并在牛奶样本中成功验证概念.
结论:
- 开发的阻隔度生物传感器阵列为快速,实时的细菌检测和抗菌敏感性测试 (AST) 提供了一个有前途的平台.
- 传感器在牛奶样本中的可靠性凸显了其在现场检测食品传播病原体的潜力.
- 这项技术可以显著加快识别有效抗生素治疗的过程.
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