Fibronectin modulates the morphology of osteoblast-like cells (MG-63) on nano-grooved substrates

  • Wei-Bor Tsai
  • Yen-Chung Ting
  • Jung-Yen Yang
  • Juin-Yih Lai
  • Hsuan-Liang Liu
Article
  • 378 Downloads

Abstract

Cell interactions with biomaterials are affected by surface topographic and chemical cues. Although it is well-known that nanometrical grooves/ridges structure modulates cellular spreading, elongation, and alignment, the combinational influence of surface topographic and chemical cues is not well studied. In this study, nano-textured silicon substrata with parallel ridges of 90, 250, or 500 nm wide, separated by grooves with equal width, were fabricated by electron beam lithography and dry etching techniques. Osteoblast-like cells, MG-63, were cultured on the patterned substrata with or without pre-adsorption of fibronectin. The cell morphology was imaged by scanning electron microscopy, and analyzed by image software. We found that FN coating initially modulated cellular spreading, length, and orientation on all types of grooved surfaces. However, after 24 h of culture, the cell morphology was not affected by FN coating on the 250-nm and 500-nm surfaces, while FN decreased cell alignment on the 90-nm surfaces. Our results suggest that surface chemical cues influence the initial cell-substratum contact, while the long-term cellular morphology is dictated by surface topographic cues.

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Copyright information

© Springer Science+Business Media, LLC 2009

Authors and Affiliations

  • Wei-Bor Tsai
    • 1
  • Yen-Chung Ting
    • 1
  • Jung-Yen Yang
    • 2
  • Juin-Yih Lai
    • 3
  • Hsuan-Liang Liu
    • 4
  1. 1.Department of Chemical EngineeringNational Taiwan UniversityTaipeiTaiwan
  2. 2.National Nano Device LaboratoriesHsinchuTaiwan
  3. 3.R&D Center for Membrane Technology and Department of Chemical EngineeringChung Yuan Christian UniversityTaoyuanTaiwan
  4. 4.Graduate Institute of Biotechnology and Department of Chemical Engineering and BiotechnologyNational Taipei University of TechnologyTaipeiTaiwan

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