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- W2014752726 abstract "Topographies promote surface-dependent behaviors which may positively influence peri-implant bone healing. In this study the topological effects of TiO2 nanotubes (TNTs) on aspects of preosteoblast behavior was investigated. Specifically, we hypothesize that TNTs can influence cell proliferation of preosteoblasts through cell adhesion and related modulation of FAK and RhoA. By culturing MC3T3-E1 cells on TNTs with different diameters (40nm and 150nm diameters), topography-dependent modulation in cell morphology and cell growth were observed. The average spreading area of the cell on Flat Ti, 40nm TNTs and 150nm TNTs were respectively 2176.05 μm2, 1510.44 μm2 and 800.72 μm2. Proliferation increased among cells cultured on the 150nm TNTs (28.6%) compared with on Flat Ti (17.06%). The expression of FAK was 86.2% down regulated superimposition of TNTs topography. RhoA expression only slightly decreased (45.9%). Increasing TNT diameter enhanced initial adherent cell growth, which was relevant to the increased RhoA-to-FAK ratio in the cell. Increased TNT diameter was associated with higher ratio and greater proliferation in the first 24 hours. These findings not only support our hypothesis, but suggest that RhoA might be critically involved in TNTs mediated cell proliferation. Future investigation using functional gain and loss of RhoA may further reveal its mechanism." @default.
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- W2014752726 date "2015-01-01" @default.
- W2014752726 modified "2023-10-13" @default.
- W2014752726 title "Proliferation of preosteoblasts on TiO<sub>2</sub>nanotubes is FAK/RhoA related" @default.
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- W2014752726 doi "https://doi.org/10.1039/c4ra16803h" @default.
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