Cell directional migration and oriented division on three-dimensional laser-induced periodic surface structures on polystyrene

Biomaterials. 2008 May;29(13):2049-59. doi: 10.1016/j.biomaterials.2007.12.047. Epub 2008 Feb 12.

Abstract

The extracellular matrix in animal tissues usually provides a three-dimensional structural support to cells in addition to performing various other important functions. In the present study, wavy submicrometer laser-irradiated periodic surface structures (LIPSS) were produced on a smooth polystyrene film by polarized laser irradiation with a wavelength of 266 nm. Rat C6 glioma cells exhibited directional migration and oriented division on laser-irradiated polystyrene, which was parallel to the direction of LIPSS. However, rat C6 glioma cells on smooth polystyrene moved in a three-step invasion cycle, with faster migration speed than that on laser-irradiated polystyrene. In addition, focal adhesions examined by immunostaining focal adhesion kinase in human epithelial carcinoma HeLa cells were punctuated on smooth polystyrene, whereas dash-like on laser-irradiated polystyrene. We hypothesized that LIPSS on laser-irradiated polystyrene acted as an anisotropic and persistent mechanical stimulus to guide cell anisotropic spreading, migration and division through focal adhesions.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Cell Division
  • Cell Line, Tumor
  • Cell Movement*
  • Focal Adhesion Protein-Tyrosine Kinases / metabolism
  • Humans
  • Imaging, Three-Dimensional
  • Microscopy, Atomic Force
  • Microscopy, Electron, Scanning
  • Polystyrenes*

Substances

  • Polystyrenes
  • Focal Adhesion Protein-Tyrosine Kinases