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High Throughput Single-cell and Multiple-cell Micro-encapsulation
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High Throughput Single-cell and Multiple-cell Micro-encapsulation

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Rapid monodisperse microencapsulation of single cells.

Xiaoxiao Zhang1, Aaron T Ohta, David Garmire

  • 1University of Hawaii at Manoa (UHM), Honolulu, HI 96822, USA. xiaoxiao@hawaii.edu

Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual International Conference
|November 25, 2010
PubMed
Summary

This study presents a novel microfluidic device for continuous production of monodisperse microcapsules with controlled cell loading. The system integrates inertial focusing, droplet generation, and photopolymerization for advanced cellular encapsulation applications.

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Area of Science:

  • Biotechnology
  • Materials Science
  • Chemical Engineering

Background:

  • Microfluidic devices offer precise control over biological and chemical processes.
  • Controlled cell encapsulation is crucial for applications like drug delivery and tissue engineering.
  • Existing methods often lack continuous production and precise loading capabilities.

Purpose of the Study:

  • To design and fabricate a microfluidic device for continuous production of monodisperse microcapsules.
  • To achieve controlled loading of cell simulants within these microcapsules.
  • To demonstrate the integration of inertial focusing, droplet generation, and photopolymerization in a single system.

Main Methods:

  • Fabrication of polydimethylsiloxane (PDMS) microfluidic devices.

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  • Utilizing poly(ethylene-glycol)-diacrylate (PEGDA) for hydrogel microcapsule formation.
  • Employing fluorescent polystyrene beads (10.3 µm) as cell simulants.
  • Demonstrating inertial focusing in a straight channel, droplet generation (60±5 µm), and photopolymerization for encapsulation.

    • Main Results:

    • Successful demonstration of inertial focusing for particle alignment.
    • Consistent generation of uniform droplets with controlled size.
    • Verified encapsulation of fluorescent beads within the hydrogel microcapsules.
    • The device enables continuous production of microcapsules with controlled loading.

    Conclusions:

    • The developed microfluidic device effectively produces monodisperse microcapsules with controlled cell loading.
    • This technology holds significant potential for advancing cellular therapeutics and single-cell manipulation.
    • The integrated system provides a versatile platform for various microencapsulation needs.