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Related Concept Videos

Overview Of Cell Separation And Isolation01:20

Overview Of Cell Separation And Isolation

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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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A Microfluidic Platform for High-throughput Single-cell Isolation and Culture
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An easy-to-operate method for single-cell isolation and retrieval using a microfluidic static droplet array.

Lin Ding1, Payar Radfar1, Meysam Rezaei1,2,3

  • 1School of Biomedical Engineering, University of Technology Sydney, Sydney, NSW, 2007, Australia.

Mikrochimica Acta
|July 6, 2021
PubMed
Summary
This summary is machine-generated.

This study introduces a novel static droplet array (SDA) method for efficient single rare cell detection and retrieval. The low-cost, rapid technique enables precise isolation of circulating tumour cells (CTCs) for downstream analysis.

Keywords:
CancerCellular heterogeneityCirculating tumour cellsDroplet microfluidicsMicrofluidic systemSingle cell detection

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Area of Science:

  • Biotechnology
  • Cell Biology
  • Medical Diagnostics

Background:

  • Studying rare cells like circulating tumour cells (CTCs) and circulating foetal cells (CFCs) is crucial for disease management.
  • Current technological limitations hinder comprehensive analysis of rare cell heterogeneity.
  • Existing methods often involve sample loss and complex procedures.

Purpose of the Study:

  • To develop an efficient, low-cost method for single rare cell detection and retrieval.
  • To overcome technological barriers in analyzing rare cells from low sample input.
  • To enable downstream molecular analysis of isolated rare cells.

Main Methods:

  • Development of a static droplet array (SDA) device for liquid segmentation and single-cell isolation.
  • Utilizing everyday laboratory equipment for cell retrieval and on-chip analysis.
  • Validation using mimicked detection of single CTCs with real-time PCR on mRNA.

Main Results:

  • The SDA method achieves near-complete sample recovery with minimal loss.
  • The process is rapid (under 15 minutes), low-cost, and easy to fabricate.
  • Successful isolation and retrieval of single cells for downstream mRNA analysis were demonstrated.

Conclusions:

  • The developed SDA method offers a significant advancement for rare cell detection and retrieval.
  • This technique provides a practical solution for analyzing rare cells in nanolitre droplets.
  • The method is highly applicable for sensitive disease monitoring and molecular diagnostics.