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Related Experiment Videos

Surface immobilized protein multilayers for cell seeding.

Eduard Brynda1, Jirí Pacherník, Milan Houska

  • 1Institute of Macromolecular Chemistry, Academy of Sciences of the Czech Republic, Heyrovskenho nam. 2, 162 06 Prague 6, Czech Republic.

Langmuir : the ACS Journal of Surfaces and Colloids
|August 11, 2005
PubMed
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Layer-by-layer assembly of cell-adhesive proteins on polystyrene surfaces enhances stem cell growth. This biomaterial coating technique shows promise for tissue engineering scaffolds tailored to specific cell applications.

Area of Science:

  • Biomaterials Science
  • Tissue Engineering
  • Cell Biology

Background:

  • Developing advanced biomaterials is crucial for tissue engineering.
  • Surface modification of cell culture substrates influences cell behavior.
  • Layer-by-layer (LbL) assembly offers precise control over surface properties.

Purpose of the Study:

  • To create and characterize multilayer biomolecular assemblies on polystyrene surfaces.
  • To evaluate the adhesion and growth of mouse embryonic stem cells on these modified surfaces.
  • To investigate the impact of surface coatings on stem cell differentiation and proliferation.

Main Methods:

  • Utilized the layer-by-layer technique to immobilize cell-adhesive proteins (gelatin, collagen IV, laminin) and polycations (polylysine, poly(ethyleneimine)) on polystyrene.

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  • Employed Fourier transform infrared multiple internal reflection spectroscopy for real-time monitoring of assembly formation, stability, and protein adsorption.
  • Assessed mouse embryonic stem cell line D3 adhesion and growth under various media conditions (serum-containing, serum-free) and with or without leukemia inhibitory factor.

    • Main Results:

    • LbL assemblies demonstrated controlled formation and stability.
    • Serum proteins rapidly adsorbed onto positively charged surfaces.
    • Cells exhibited optimal growth on surfaces coated with gelatin and collagen IV assemblies.
    • Non-differentiated stem cells showed enhanced growth on polycation surfaces, especially when treated with glutaraldehyde, compared to differentiated cells in serum-free media.

    Conclusions:

    • The layer-by-layer deposition technique is a viable method for creating tailored biomolecular coatings.
    • These coatings can significantly influence stem cell adhesion, proliferation, and differentiation.
    • This approach holds potential for developing advanced scaffolds for tissue engineering applications.