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Updated: Feb 11, 2026

Site-Directed Immobilization of Bone Morphogenetic Protein 2 to Solid Surfaces by Click Chemistry
Published on: March 29, 2018
In Vitro Osteogenic Differentiation Enhanced by Zirconia Coated with Bone Morphogenetic Protein-2
Abstract:
In this study we report on the effectiveness of click chemistry-enhanced zirconium dioxide (ZrO2-3) for the immobilization of biomolecules, and the enhancement of osteoblastic differentiation of MC3T3-E1 cells by bone morphogenetic protein-2 (BMP-2) immobilized on ZrO2-6. The surfaces of ZrO2-1 through 6 were characterized by scanning electron microscopy (SEM), static contact angles, and X-ray photoelectron spectroscopy (XPS) measurements. The results from these tests indicated that ZrO2-1 was successfully surface-modified via click chemistry (ZrO2-3). Through quantitative analysis of heparin immobilized on ZrO2-5, we found that ZrO2-3 was a useful tool for immobilizing biomolecules such as heparin. Release tests of BMP-2 from ZrO2-6 showed well-controlled release kinetics over a period of 28 days. MC3T3-E1 cell proliferation tests indicated that ZrO2-6 was highly biocompatible with these cells. Through In Vitro tests such as alkaline phosphatase (ALP) activity, calcium deposition, and real-time polymerase chain reaction (real-time PCR), we found that ZrO2-6 was a useful tool for enhancing osteoblastic differentiation of MC3T3-E1 cells.
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