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Overview Of Cell Separation And Isolation01:20

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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.
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Related Experiment Video

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A Microfluidic Platform for High-throughput Single-cell Isolation and Culture
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A Microfluidic Platform for High-throughput Single-cell Isolation and Culture.

Ching-Hui Lin1, Hao-Chen Chang1, Chia-Hsien Hsu2

  • 1Institute of Biomedical Engineering and Nanomedicine, National Health Research Institutes, Taiwan; Tissue Engineering and Regenerative Medicine, National Chung Hsing University.

Journal of Visualized Experiments : Jove
|June 25, 2016
PubMed
Summary

A new microfluidic chip enables high-efficiency single-cell isolation and long-term culture. This method supports cellular heterogeneity analysis for stem and cancer cells, offering a flexible platform for various single-cell applications.

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Area of Science:

  • Biotechnology
  • Cell Biology
  • Microfluidics

Background:

  • Studying single-cell heterogeneity is vital but technically challenging.
  • Existing methods often lack simplicity and high-throughput capabilities for single-cell culture.

Purpose of the Study:

  • To develop a simple, high-throughput microfluidic chip for efficient single-cell isolation and long-term culture.
  • To demonstrate the platform's utility in analyzing cellular heterogeneity using clonogenic assays.

Main Methods:

  • A microfluidic chip strategy utilizing dual-sized microwells for precise single-cell isolation and subsequent clonal culture.
  • Application of the platform with mouse neural stem cells (KT98) and human cancer cell lines (A549, MDA-MB-435).

Main Results:

  • Achieved high single-cell isolation efficiency of approximately 77%.
  • Successfully performed long-term single-cell culture for up to 7 days within the microfluidic chip.
  • Demonstrated cellular heterogeneity analysis via clonogenic assays on various cell types.

Conclusions:

  • The developed microfluidic platform offers an efficient and flexible approach for single-cell isolation and long-term culture.
  • The adjustable culture spaces within the chip enhance its applicability for diverse single-cell strategies without compromising isolation efficiency.