Abstract
The incorporation of chitosan into electro-deposited calcium phosphate (CaP) coatings increases bone marrow stromal cell attachment. We hypothesized that such electrodeposited CaP/chitosan coatings can also enhance the proliferative ability and differentiation potential of osteoblasts. To verify this hypothesis, we cultured osteoblast-like MC3T3-E1 cells on these CaP coatings. It was found that MC3T3-E1 cells cultured on the electrodeposited CaP/chitosan coatings had cell proliferation rates higher than those on the electrodeposited CaP coatings. At the same time, both alkaline phosphatase activity and collagen expression were increased, and both bone sialoprotein and osteocalcin genes were up-regulated when MC3T3-E1 cells were cultured on the electrodeposited CaP/chitosan coatings. Additionally, within the range of selected chitosan concentrations in solution, no significant difference was found between the CaP/chitosan coatings. Our results suggest that the electrodeposited CaP/chitosan coatings are favorable to the proliferation and differentiation of MC3T3-E1 cells, which may endow them with great potential for future applications.
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