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Related Experiment Videos

Continuous flow microfluidic device for cell separation, cell lysis and DNA purification.

Xing Chen1, Dafu Cui, Changchun Liu

  • 1State Key Laboratory of Transducer Technology, Institute of Electronics, Chinese Academy of Sciences, Beijing 100080, China. chenxing2004star@yahoo.ac.cn <chenxing2004star@yahoo.ac.cn>

Analytica Chimica Acta
|March 28, 2007
PubMed
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This study presents an integrated microfluidic device for rapid whole blood sample pre-treatment. The device efficiently separates cells, lyses them, and purifies genomic DNA for genetic analysis.

Area of Science:

  • Biomedical Engineering
  • Microfluidics
  • Molecular Biology

Background:

  • Traditional whole blood sample preparation is time-consuming and labor-intensive.
  • Integrated microfluidic devices offer potential for miniaturized and automated biological sample processing.

Purpose of the Study:

  • To develop and evaluate a novel integrated microfluidic device for automated whole blood sample pre-treatment.
  • To achieve efficient cell separation, cell lysis, and genomic DNA purification in a continuous flow process.

Main Methods:

  • Development of an integrated microfluidic device incorporating microfilters, micromixers, and a porous matrix.
  • Utilized crossflow filtration for cell separation to prevent clogging.
  • Employed guanidine buffer for cell lysis and anodized silicon for DNA adsorption.

Related Experiment Videos

  • Simulated and optimized the fluid flow process and anodization parameters.

    • Main Results:

    • Successfully separated blood cells, lysed white blood cells, and purified genomic DNA using the microfluidic device.
    • Obtained an average of 35.7 ng of genomic DNA from 1 µL of rat whole blood.
    • Achieved comparable DNA yield to commercial centrifuge methods within 50 minutes.

    Conclusions:

    • The integrated microfluidic device provides an efficient and rapid method for whole blood sample pre-treatment.
    • This technology has significant potential for point-of-care genetic analysis and other applications requiring rapid DNA purification.