Engineering protein and cell adhesivity using PEO-terminated triblock polymers.

Publication Type:

Journal Article

Source:

J Biomed Mater Res, Volume 60, Issue 1, p.126-34 (2002)

Keywords:

3T3 Cells, Animals, Cell Adhesion, Cells, Cultured, Cytological Techniques, Extracellular Matrix Proteins, Hepatocytes, Mice, Microscopy, Electron, Nanotechnology, Poloxamer, Polyethylene Glycols, Protein Engineering, Surface Properties

Abstract:

<p>Previous studies on customizing cell culture environments have utilized a variety of microfabrication-based tools to control the spatial localization of adhesive proteins and subsequently mammalian cells. Others have used various methods to immobilize nonadhesive PEO-based polymers on surfaces to inhibit protein absorption and cell adhesion. In this study, we report the application of a well-characterized, commercially available, PEO-terminated triblock polymer (Pluronic F108) to create micropatterned nonadhesive domains on a variety of biomaterials that deter cell adhesion for up to 4 weeks in culture. The Pluronic can be applied using microfluidic tools or photolithographic techniques, and can be adsorbed to a variety of common surfaces including tissue culture polystyrene, methylated glass, silicone, and polylactic-co-glycolic acid. The effectiveness of the Pluronic in inhibiting cell adhesion in the presence of collagen I is also quantified. Finally, these patterning techniques are generalized to control tissue organization on a variety of common biomaterials. This simple method for micropatterning PEO and, therefore, proteins and cells should prove useful as a tool for biomolecular surface engineering.</p>

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