Adhesion of Osteoblasts to a Vertically Aligned TiO2 Nanotube Surface
2013
The adhesion of cells to vertically aligned TiO2 nanotubes is reviewed. The attraction between a negatively
charged nanotube surface and a negatively charged osteoblast is facilitated by charged protein-mediators like proteins
with a quadrupolar internal charge distribution, fibronectin and vitronectin. It is shown that adhesion and spreading of
osteoblasts on vertically aligned TiO2 nanotube surfaces depend on the diameter of the nanotubes. Apparently, a small
diameter nanotube surface has on average more sharp convex edges per unit area than a large one, leading to stronger
binding affinity on its surface.
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