amino acids 304-459) protein. Moreover, function-blocking inhibition assay using monoclonal antibody against integrin subunits revealed that αV integrin subunit played key a role in HOS cell adhesion, and αVβ3 and αVβ5 integrins acted as receptor of rVN-FI protein. rVN-FI-derived synthetic peptides containing Arg-Gly-Asp (RGD) motif, P6 (AECKPQVTRGDV) and P7 (PQVTRGDVFTMP) completely blocked the adhesion of HOS cell to VN. These results indicate that rVN-FI protein showed biological functions on osteoblast-like HOS cells. Thus, rVN-FI protein of human vitronectin may have potential application on bone tissue regeneration-related tissue engineering.
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The effects of recombinant vitronectin fragments on the human osteosarcoma cell line behavior