Microfluidic Manufacturing of Alginate Fibers with Encapsulated Astrocyte Cells
ACS Applied Bio Materials
|January 14, 2022
Summary
Microfluidic encapsulation enables controlled immobilization of mouse astrocyte cells (MACs) in alginate fibers. This method offers high cell survival rates and tunable fiber properties for advanced biomaterial applications.
Area of Science:
- Biomaterials Engineering
- Cell Encapsulation Technology
- Tissue Engineering
Background:
- Cell immobilization is crucial for spatial-temporal control in biological applications.
- Traditional methods often lack control or use harsh conditions incompatible with cell viability.
- Microfluidic techniques offer a promising alternative for precise cell encapsulation.
Purpose of the Study:
- To develop and characterize microfluidically produced alginate fibers for cell encapsulation.
- To assess the viability and survival rates of encapsulated mouse astrocyte cells (MACs).
- To determine the mechanical properties and porosity of the fabricated fibers.
Main Methods:
- Utilized microfluidic systems for continuous fabrication of alginate microfibers.
- Encapsulated mouse astrocyte cells (MACs) within the alginate matrix.
- Assessed cell viability at 24 hours and 11 days post-encapsulation.
- Measured fiber mechanical properties (Young's modulus) and porosity.
Main Results:
- Achieved high cell survival rates: up to 89% at 24 hours and 60% at 11 days.
- Fabricated fibers with tunable Young's modulus (400–17,000 MPa dry, 20–90 MPa wet).
- Controlled fiber porosity across a wide range (12%–92%).
Conclusions:
- Microfluidic encapsulation provides a versatile and cell-friendly method for creating functional alginate microfibers.
- The technique allows for precise control over fiber properties and high cell viability.
- These microfibers hold potential for various applications in tissue engineering and regenerative medicine.
