一个无标签的滴滴分类平台,集成过电离分,用于估计细菌抗菌耐药性
Jia-De Yan1, Chiou-Ying Yang2, Arum Han3,4,5
1Doctoral Program in Tissue Engineering and Regenerative Medicine, National Chung Hsing University, Taichung City 402, Taiwan.
Biosensors
|May 24, 2024
概括
一种新型的微流体装置使用二电泳来将抗生素耐药细菌从易受感染的细菌分类. 这项技术有助于高通量抗菌素耐药性测试和细菌种群监测.
科学领域:
- 生物技术是生物技术.
- 微流体学 微流体学
- 微生物学 微生物学
背景情况:
- 抗菌素耐药性 (AMR) 是一个关键的全球健康威胁,需要先进的诊断工具.
- 微流体滴滴系统为微生物检测提供高通量,分隔的环境.
- 介电泳 (DEP) 使用电场来根据细胞的介电性质来操纵细胞.
研究的目的:
- 开发一种无标签的,基于电介电泳 (DEP) 的微流体平台,用于对抗生素耐药细菌进行分类.
- 要区分含有抗安培素 (AmpR) *埃舍里希亚大肠杆菌 (E. coli) * (E. 大肠杆菌) 和易受 *E.大肠杆菌* 暴露于安培 (Amp).
- 建立一种方法来量化样本中AmpR *E. coli* 的比例.
主要方法:
- 开发一个微流体平台,使用油中的水乳液滴.
- 利用抗生素治疗后由细菌活力引起的导电性差异.
- 在 2 MHz 和 100 Vpp 处施加 DEP 力,以基于导电性变化进行无标签分类.
主要成果:
- 一种特定的低导电性Luria-Bertani (LC-LB) 配方支持细菌生长,并允许安培有效杀死易受感染的*E. coli*.
- 这种差异杀死导致了显著的导电性变化,使得基于DEP的AmpR*E. coli*/Amp滴从*E. coli*/Amp滴中进行了分类.
- 当AmpR *E. coli* 种群达到50%或更高时,分类效率下降到大约50%,这表明存在可量化的关系.
结论:
- 基于DEP的微流体平台成功地根据抗生素耐药性对细菌种群进行分类,而无需光学检测.
- 分类比可以作为一个指数来估计未知样本中抗生素耐药细菌的比例.
- 这项技术为快速,高通量抗微生物耐药性监测和诊断提供了希望.
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