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Updated: Jul 24, 2025

A Microfluidic-based Hydrodynamic Trap for Single Particles

A Microfluidic-based Hydrodynamic Trap for Single Particles

Published on: January 21, 2011

连续捕获,弹性测量和单个细胞的确定性打印使用排列的微流体陷.

Yike Cai¹, En Yu¹, Jing Jin¹

¹School of Mechanical Engineering and Automation, Harbin Institute of Technology, Shenzhen, Shenzhen 518055, China. chenhuaying@hit.edu.cn.

|July 10, 2023

概括

这项研究引入了一种微流体装置,用于精确的单细胞分析,从而能够测量细胞弹性和确定性打印,以将力学与生物物理性质联系起来.

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科学领域:

生物物理学的生物物理.
细胞生物学细胞生物学
微流体学微流体学

背景情况:

将细胞机制与信号传递和遗传学等其他细胞特性联系起来至关重要.
现有的方法在单细胞分析和操纵中可能缺乏精度.

研究的目的:

开发和验证用于捕获,测量弹性和打印单细胞的微流体技术.
建立细胞力学和生物物理性质之间的相关性.

主要方法:

使用了带有U形陷和精确压力调节的微流体装置来捕获和释放细胞.
采用数值和理论分析来理解压力动态.
使用微珠和K562细胞进行弹性测量和打印.

主要成果:

在捕获和释放微粒方面实现了高效率 (96%),单细胞效率为92.62%.
证明了K562细胞的快速捕获 (15.25 ± 7.63秒),捕获效率取决于流量.
成功确定了细胞硬度 (171.15 ± 73.35 Pa 和 13959 ± 6328 Pa) 和已知弹性的印制细胞.

结论:

开发的微流体技术能够准确地分发单细胞和测量弹性.

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这种工具有助于研究细胞力学及其与其他生物物理性质的关系.