Paper Type |
Contributed Paper |
Title |
BMP-2 Incorporation into 3D Printed Porous Hydroxyapatite by Rapid Biomimetic Co-Precipitation Technique Using Accelerated Calcium Phosphate Solution |
Author |
Faungchat Thammarakcharoen and Jintamai Suwanprateeb* |
Email |
jintamai@mtec.or.th |
Abstract: Bone morphogenetic protein (BMP-2) is multi-functional growth factor and widely used
osteoinductive cell mediator which was loaded into the osteoconductive bone graft to accelerate
bone healing and osteointegration of the graft. Rapid biomimetic co-precipitation technique by using
newly developed accelerated calcium phosphate solution was investigated as a mean to enhance the
incorporation of BMP-2 on three dimensionally printed porous hydroxyapatite (3DP HA) and its
release characteristic compared to typical direct adsorption. Two initial BMP-2 concentrations of
1 and 10 μg/mL were employed in this study. After loading, new octacalcium phosphate leaf-like crystals
were observed to form on the surface of BMP-2 loaded 3DP HA by using biomimetic co-precipitation
technique at both concentrations while none was seen in the direct adsorption technique. Biomimetic
co-precipitation technique yielded two times greater in total BMP-2 loading content, but displayed
lower releasing rate than those of the direct adsorption technique. Cell differentiation of pre-osteoblast
MC3T3-E1 on the BMP-2 loaded 3DP HA by using biomimetic co-precipitation was also greater
enhanced compared to non-loaded or direct adsorbed samples. The increase in content and decrease
in releasing rate of BMP-2 by using biomimetic co-precipitation technique could be related to the
formation of new octacalcium phosphate crystals on the 3DP HA which incorporated BMP-2 into
their structures and retarded its release. |
|
Start & End Page |
723 - 737 |
Received Date |
2019-07-25 |
Revised Date |
|
Accepted Date |
2019-12-03 |
Full Text |
Download |
Keyword |
BMP-2, hydroxyapatite, calcium phosphate, co-precipitation, biomimetic |
Volume |
Vol.47 No.4 (Special Issue II : July 2020) |
DOI |
|
Citation |
Thammarakcharoen F. and Suwanprateeb J., BMP-2 Incorporation into 3D Printed Porous Hydroxyapatite by Rapid Biomimetic Co-Precipitation Technique Using Accelerated Calcium Phosphate Solution, Chiang Mai J. Sci., 2020; 47(4): 723-737. |
SDGs |
|
View:658 Download:356 |