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Creation of biofunctionalized micropatterns on poly(methyl methacrylate) by single-step phase separation method
Quoc-Phong Ho1, Shu-Ling Wang, Meng-Jiy Wang
1Department of Chemical Engineering, National Taiwan University of Science and Technology, 43 Keelung Road, Section 4, Taipei 106, Taiwan.
ACS Applied Materials & Interfaces
|October 26, 2011
Summary
This study developed polymer thin films with tunable micropatterns and biological functions. Surface topography significantly influenced fibroblast cell growth, with larger microconcaves promoting higher cell density.
Area of Science:
- Materials Science
- Biomedical Engineering
- Polymer Chemistry
Background:
- Developing advanced materials with controlled surface properties is crucial for biomedical applications.
- Integrating topographical and chemical cues on material surfaces can influence cellular behavior.
Purpose of the Study:
- To create polymer thin films with tunable micropatterns and biological functionalities using a one-step procedure.
- To investigate the impact of topographical and chemical cues on L-929 fibroblast behavior.
Main Methods:
- Fabrication of poly(methyl methacrylate) (PMMA) thin films with varying microconcave diameters (5–37 μm).
- Incorporation of biomolecules like type I collagen and dopamine.
- Cultivation of L-929 fibroblasts on prepared surfaces.
- Evaluation of surface chemistry using electron spectroscopy for chemical analysis (ESCA).
- Assessment of cell responses via viability assays and immunostaining.
Main Results:
- Cell density of L-929 fibroblasts increased proportionally with microconcave diameter, indicating topography's predominant effect.
- PMMA films with collagen and dopamine enhanced cell numbers, irrespective of microstructures.
- Bovine serum albumin incorporation inhibited cell growth.
Conclusions:
- A simple, effective method for simultaneously incorporating biological functions and topography onto material surfaces was developed.
- These functionalized polymer films hold potential for advanced biomedical material applications.
