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Related Experiment Videos

Integrated cell isolation and polymerase chain reaction analysis using silicon microfilter chambers

P Wilding1, L J Kricka, J Cheng

  • 1Department of Pathology and Laboratory Medicine, University of Pennsylvania, Philadelphia 19104, USA.

Analytical Biochemistry
|March 26, 1998
PubMed
Summary

This study presents a novel microchip for isolating white blood cells and directly amplifying genomic DNA using polymerase chain reaction (PCR). This integrated device simplifies nucleic acid analysis by combining cell isolation and PCR in one step.

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Area of Science:

  • Biotechnology
  • Microfluidics
  • Molecular Biology

Background:

  • Nucleic acid analysis requires efficient methods for both cell isolation and DNA amplification.
  • Current methods often involve multiple, separate steps, increasing complexity and potential for error.
  • Microfluidic devices offer potential for integrated biological sample processing.

Purpose of the Study:

  • To develop a microfluidic device for simultaneous isolation of white blood cells and direct genomic DNA amplification.
  • To simplify and integrate key steps in nucleic acid analysis.
  • To demonstrate the utility of a novel 'weir-type' filter design for cell capture.

Main Methods:

  • Isolation of white blood cells from whole blood using silicon-glass microchips with 'weir-type' filters (3.5-micron features).

Related Experiment Videos

  • Direct amplification of genomic DNA targets (e.g., dystrophin gene) from captured white blood cells via polymerase chain reaction (PCR).
  • Integration of cell isolation and PCR within a single microfluidic device.

    • Main Results:

    • Successful isolation of white blood cells on microchip filters.
    • Direct amplification of genomic DNA targets from the isolated cells was achieved.
    • Demonstrated the dual function of the microchip for integrated sample processing.

    Conclusions:

    • The developed microchip effectively integrates white blood cell isolation and direct PCR amplification.
    • This dual-function device offers a simplified approach to nucleic acid analysis.
    • The microchip design facilitates streamlined molecular diagnostic workflows.