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Combinatorial characterization of cell interactions with polymer surfaces
Author(s) -
Meredith J. Carson,
Sormana JoeL.,
Keselowsky Benjamin G.,
García Andrés J.,
Tona Alessandro,
Karim Alamgir,
Amis Eric J.
Publication year - 2003
Publication title -
journal of biomedical materials research part a
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.849
H-Index - 150
eISSN - 1552-4965
pISSN - 1549-3296
DOI - 10.1002/jbm.a.10004
Subject(s) - materials science , characterization (materials science) , polymer , nanotechnology , polymer science , composite material
We report a novel combinatorial methodology for characterizing the effects of polymer surface features on cell function. Libraries containing hundreds to thousands of distinct chemistries, microstructures, and roughnesses are prepared using composition spread and temperature gradient techniques. The method enables orders of magnitude increases in discovery rate, decreases variance, and allows for the first time high‐throughput assays of cell response to physical and chemical surface features. The technique overcomes complex variable spaces that limit development of biomaterial surfaces for control of cell function. This report demonstrates these advantages by investigating the sensitivity of osteoblasts to the chemistry, microstructure, and roughness of poly( D , L ‐lactide) and poly(ϵ‐caprolactone) blends. In particular, we use the phenomenon of heat‐induced phase separation in these polymer mixtures to generate libraries with diverse surface features, followed by culture of UMR‐106 and MC3T3‐E1 osteoblasts on the libraries. Surface features produced at a specific composition and process temperature range were discovered to enhance dramatically alkaline phosphatase expression in both cell lines, not previously observed for osteoblasts on polymer blends. © 2003 Wiley Periodicals, Inc. J Biomed Mater Res 66A: 483–490, 2003