title: Cell directional migration and oriented division on three-dimensional laser-induced periodic surface structures on polystyrene.
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.
authors.affiliation: School of Chemistry and Chemical Technology, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, PR China.
authors.forename: Xuefeng
authors.initials: X
authors.lastname: Wang
authors.forename: Christian A
authors.initials: CA
authors.lastname: Ohlin
authors.forename: Qinghua
authors.initials: Q
authors.lastname: Lu
authors.forename: Jun
authors.initials: J
authors.lastname: Hu
mesh_terms: D002455:Cell Division; D045744:Cell Line, Tumor; D002465:Cell Movement; D051416:Focal Adhesion Protein-Tyrosine Kinases / Q000378:metabolism; D006801:Humans; D021621:Imaging, Three-Dimensional; D018625:Microscopy, Atomic Force; D008855:Microscopy, Electron, Scanning; D011137:Polystyrenes
chemical_list: D011137:Polystyrenes; D051416:Focal Adhesion Protein-Tyrosine Kinases