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High-density microfluidic arrays for cell cytotoxicity analysis.

Zhanhui Wang1, Min-Cheol Kim, Manuel Marquez

  • 1Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.

Lab on a Chip
|June 1, 2007
PubMed
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This study introduces a microfluidic platform for high-throughput cell cytotoxicity screening. The device enables parallel testing of multiple cell types against various toxins, offering a scalable and efficient alternative to traditional assays.

Area of Science:

  • Biotechnology and Biomedical Engineering
  • Cell Biology and Toxicology

Background:

  • High-throughput screening is crucial for drug discovery and toxicology.
  • Existing methods like microtiter plates can be resource-intensive and lack scalability for complex cell-based assays.

Purpose of the Study:

  • To develop a novel multilayer elastomeric microfluidic array platform.
  • To enable high-throughput, multiplexed cell cytotoxicity screening of mammalian cell lines.
  • To demonstrate the platform's capability in parallel cell seeding and toxin exposure.

Main Methods:

  • Fabrication of a multilayer elastomeric microfluidic device with orthogonal channels and pneumatic valves.
  • Integration of cell-trapping sieves within microfluidic chambers for controlled cell seeding.
  • High-throughput screening of three cell types against five toxins using a 576-chamber array.

Related Experiment Videos

  • On-chip cell morphology and viability assessment via fluorescence microscopy.

    • Main Results:

    • The microfluidic platform successfully enabled parallel cell seeding and toxin exposure in a multiplexed format.
    • Cytotoxicity screening results were comparable to conventional microtiter plate assays.
    • Demonstrated scalability and efficiency in reagent consumption for cell-based screening.

    Conclusions:

    • The developed microfluidic array platform is a scalable and efficient tool for high-density parallel cytotoxicity screening.
    • This technology minimizes reagent use and offers a valuable alternative for mammalian cell line toxicology studies.
    • The platform's design facilitates integrated cell seeding and toxin exposure within a single microfluidic device.