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Enhancing Specific Binding of L929 Fibroblasts: Effects of Multi‐Scale Topography of GRGDY Peptide Modified Surfaces |
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| Authors: | Feng Zhou Dan Li Zhaoqiang Wu Bo Song Lin Yuan Hong Chen |
| Affiliation: | 1. Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, Department of Polymer Science and Engineering, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China;2. School of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070, China |
| Abstract: | Surface chemical composition and roughness caused by micro/nano‐topographical structures are two predominant factors in determining cellular response. A series of gold nanoparticle layers (GNPLs) with increasing surface roughness are prepared by depositing gold nanoparticles onto planar gold films. Glycine‐arginine‐glycine‐aspartic acid‐tyrosine (GRGDY) peptide is then conjugated to the surface through poly[oligo(ethylene glycol) methacrylate] polymer brushes as spacers. The pristine micro/nano‐roughness structures significantly inhibit L929 cell growth. After modification with POEGMA‐GRGDY, however, the micro/nano‐structures greatly enhance L929 cell‐specific interactions while maintaining superior low‐fouling ability compared to planar gold.  |
| Keywords: | glycine‐arginine‐glycine‐aspartic acid‐tyrosine (GRGDY) gold nanoparticle layers (GNPLs) micro/nano‐topographical structures poly[oligo(ethylene glycol) methacrylate] surface chemical compositions |