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Delivery of bone morphogenetic protein-2 and substance P using graphene oxide for bone regeneration
Authors La W, Jin M, Park S, Yoon H, Jeong G, Bhang SH, Park H, Char K, Kim B
Received 29 June 2013
Accepted for publication 9 August 2013
Published 7 May 2014 Volume 2014:9(Supplement 1) Pages 107—116
DOI https://doi.org/10.2147/IJN.S50742
Checked for plagiarism Yes
Review by Single anonymous peer review
Peer reviewer comments 4
Wan-Geun La,1 Min Jin,1 Saibom Park,1,2 Hee-Hun Yoon,1 Gun-Jae Jeong,1 Suk Ho Bhang,1 Hoyoung Park,1,2 Kookheon Char,1,2 Byung-Soo Kim1,3
1School of Chemical and Biological Engineering, Seoul National University, Seoul, Republic of Korea; 2The National Creative Research Initiative Center for Intelligent Hybrids, Seoul National University, Seoul, Republic of Korea; 3Institute of Bioengineering, Institute of Chemical Processes, Engineering Research Institute, Seoul National University, Seoul, Republic of Korea
Abstract: In this study, we demonstrate that graphene oxide (GO) can be used for the delivery of bone morphogenetic protein-2 (BMP-2) and substance P (SP), and that this delivery promotes bone formation on titanium (Ti) implants that are coated with GO. GO coating on Ti substrate enabled a sustained release of BMP-2. BMP-2 delivery using GO-coated Ti exhibited a higher alkaline phosphatase activity in bone-forming cells in vitro compared with bare Ti. SP, which is known to recruit mesenchymal stem cells (MSCs), was co-delivered using Ti or GO-coated Ti to further promote bone formation. SP induced the migration of MSCs in vitro. The dual delivery of BMP-2 and SP using GO-coated Ti showed the greatest new bone formation on Ti implanted in the mouse calvaria compared with other groups. This approach may be useful to improve osteointegration of Ti in dental or orthopedic implants.
Keywords: bone morphogenetic protein-2, bone regeneration, graphene oxides, stem cell recruitment, substance P
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