title: [The effects of TiO2 nano-pore on titanium surface on cell adhesion and spreading of bone marrow stromal cells].
abstract: OBJECTIVE
  To study the effect of TiO2 nano-pore on titanium surface on cell biological characteristics of bone marrow stromal cells (BMSCs), such as cell adhesion and spreading.
  
  
  METHODS
  TiO2 nano-pore structure on titanium surface with certain shape and size was prepared by electrochemical anodizing and chemical corrosion technologies. The effect of TiO2 nano-pore on titanium surface on cell adhesion, morphology, cytoskeleton protein of BMSCs was detected by laser scanning confocal microscope, scanning electron microscope. The data was analyzed by Student t test using SAS6.12 software package.
  
  
  RESULTS
  TiO2 nano-pores were produced on titanium surface, which was of about 30nm in width and 15nm in depth. More adhesive cells, larger cell spreading area, thinker cytoskeleton, richer fine pseudopodia were observed in the treatment group than in the control group after 4 hours and 8 hours of incubation of BMSCs (P<0.05). The area of BMSCs cell spreading in treatment group was 1.35 times than in the control group (P=0.001).
  
  
  CONCLUSIONS
  TiO2 nano-pores produced on titanium surface by electrochemical anodizing and chemical corrosion technologies may promote cell adhesion and spreading of BMSCs. Supported by National Natural Science Foundation of China(Grant No.30572053), Nanometer Research Project of Shanghai Municipality(Grant No. 0452nm063), Research Fund of Science and Technology Commission of Shanghai Municipality (Grant No.09DZ2271100) and Shanghai Leading Academic Discipline Project (Grant No.S30206).
authors.affiliation: Department of Oral and Maxillofacial Surgery, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, China. jxb_zhangmei@126.com
authors.forename: Mei
authors.initials: M
authors.lastname: Zhang
authors.forename: Qi-yu
authors.initials: QY
authors.lastname: Huang
authors.forename: Xiao-jian
authors.initials: XJ
authors.lastname: Zhou
authors.forename: Qiang
authors.initials: Q
authors.lastname: Sun
authors.forename: Fei
authors.initials: F
authors.lastname: Yang
authors.forename: Wan-tao
authors.initials: WT
authors.lastname: Chen
mesh_terms: D002448:Cell Adhesion; D059630:Mesenchymal Stem Cells; D008855:Microscopy, Electron, Scanning; D013499:Surface Properties; D014025:Titanium
chemical_list: C009495:titanium dioxide; D014025:Titanium