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开发一种光学诱导导电解 (ODEP) 微流体系统,用于高性能隔离和细菌净化

Po-Yu Chu¹, Chia-Ming Yang^2,3,4,5,6, Kai-Lin Huang¹

¹Graduate Institute of Biomedical Engineering, Chang Gung University, Taoyuan City 33302, Taiwan.

|November 24, 2023

概括

这项研究开发了一种两步方法,使用免疫磁性微珠和光学诱导的透电泳 (ODEP) 来从血液中分离活细菌. 该技术实现了高纯度的活细菌,这对于精确的基于核酸的检测至关重要.

科学领域:

生物技术是生物技术.
微流体学微流体学
医学诊断医学诊断医学诊断

背景情况:

核酸放大试验可以在血液中快速检测细菌.
死细胞和细菌释放核酸,可能会干扰测试准确度.
从血液中分离活细菌对于可靠的检测至关重要.

研究的目的:

开发和评估一种用于从血液样本中分离活细菌的新方法.
为了提高下游基于核酸的细菌检测的准确性.
为了最大限度地减少非目标核酸的干扰.

主要方法:

一个两步隔离过程,结合了免疫磁性微珠分离和光学诱导的透电泳 (ODEP).
利用ODEP微流体系统与动态圆形光图像阵列进行细胞分离.
基于活细菌和残留血细胞之间的尺寸差异进行分离.

主要成果:

实现了活细菌的高纯度隔离,范围从90.5%到99.2%.
该ODEP系统有效地将活细菌与剩余的血细胞分离,而不会造成细胞损伤.
证明了该方法能够产生适合敏感检测的纯活菌的能力.

结论:

拟议的两步方法成功地从血液中分离出高纯度的活细菌.
这种技术可以防止同时存在的细胞受到损害,从而保持它们的完整性.
消除非目标核酸的干扰,提高基于核酸的检测精度.

关键词:

细菌细菌细菌是一种细菌.隔离隔离隔离隔离隔离微流体系统的微流体系统光学诱导的二电电泳 (ODEP)净化净化净化净化

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Cell separation was first achieved in 1964 by S. H. Seal, who separated large tumor cells from the smaller blood cells using filtration. Two years later, Pohl and Hawk performed experiments on how cells respond differently to a nonuniform electric field based on the cell type. Such observations were the inception of cell separation methods, which allow isolating a single cell type from a heterogeneous sample.