An artificial fusion protein between bone morphogenetic protein 2 and titanium- binding peptide is functional

作者：Yuasa Kazuaki; Kokubu Eitoyo; Kokubun Katsutoshi; Matsuzaka Kenichi; Shiba Kiyotaka; Kashiwagi Kenji; Inoue Takashi^*

来源：Journal of Biomedical Materials Research Part A, 2014, 102(4): 1180-1186.

DOI：10.1002/jbm.a.34765

• titanium-binding peptide
• bone morphogenetic protein 2
• artificial protein
• porous carbon
• in vivo

The purpose of this study was to investigate osteogenesis using an artificial fusion protein (AFP) composed of modified bone morphogenetic protein 2 (BMP-2) with a titanium (Ti)-binding peptide (TBP) motif on a Ti surface in vivo. In the in vivostudy, 5-m thick Ti was coated with electron cyclotron resonance sputtering on a porous carbon scaffold which was then dipped in one of three different mixtures of collagen gel: (1) collagen gel only, (2) collagen gel with TBP, and (3) collagen gel with the AFP between BMP-2 and the TBP motif (AFP-TBP-BMP-2). These scaffolds were then implanted into rat abdominal muscles and were studied histologically at various times and the expression of several bone-related protein messenger RNAs (mRNAs) was also analyzed. The Ti-coated scaffold of the collagen gel with AFP-TBP-BMP-2 produced cartilage in the muscle and the expression of alkaline phosphatase, bone sialoprotein, and runt-related gene 2 mRNAs was significantly increased. These results suggest that the scaffold of the collagen gel with AFP-TBP-BMP-2 accelerates osteogenesis in vivo.

• 出版日期2014-4