TY - JOUR
T1 - 3D scaffolds of polycaprolactone/copper-doped bioactive glass: Architecture engineering with additive manufacturing and cellular assessments in a coculture of bone marrow stem cells and endothelial cells
AU - Wang, Xiaoju
AU - Zhang Molino, Binbin
AU - Pitkänen, Sanna
AU - Ojansivu, Miina
AU - Xu, Chunlin
AU - Hannula, Markus
AU - Hyttinen, Jari
AU - Miettinen, Susanna
AU - Hupa, Leena
AU - Wallace, Gordon
N1 - 3pk
ook
PY - 2019
Y1 - 2019
N2 - The local delivery of Cu2+ from copper-doped bioactive glass (Cu-BaG) was combined with 3D printing of polycaprolactone (PCL) scaffolds for its potent angiogenic effect in bone tissue engineering. PCL and Cu-BaG were, respectively, dissolved and dispersed in acetone to formulate a moderately homogeneous ink. The PCL/Cu-BaG scaffolds were fabricated via direct ink writing into a cold peg o ethanol bath. The architecture of the printed scaffolds, including strut diameter, strut spacing, and porosity, were investigated and characterized. The PCL/Cu-BaG scaffolds showed a Cu-BaG content-dependent mechanical property, as the compressive Young's modulus ranged from 7 to 13 MPa at an apparent porosity of 60%. The ion dissolution behavior in simulated body fluid was evaluated, and the hydroxyapatite-like precipitation on the strut surface was confirmed. Furthermore, the cytocompatibility of the PCL/Cu-BaG scaffolds was assessed in human bone marrow stem cell (hBMSC) culture, and a dose-dependent cytotoxicity of Cu2+ was observed. Here, the PCL/BaG scaffold induced the higher expression of late osteogenic genes OSTEOCALCIN and DLXS in comparison to the PCL scaffold. The doping of Cu 2 + in BaG elicited higher expression of the early osteogenic marker gene RUNX2a but decreased the expression of late osteogenic marker genes OSTEOCALCIN and DLX5 in comparison to the PCL/BaG scaffold, demonstrating the suppressing effect of Cu2+ on osteogenic differentiation of hBMSCs. In a coculture of hBMSCs and human umbilical vein endothelial cells, both the PCL/BaG and PCL/Cu-BaG scaffolds stimulated the formation of a denser tubule network, compared to the PCL scaffold. Meanwhile, only slightly higher gene expression of vWF was observed with the PCL/Cu-BaG scaffold than with the PCL/BaG scaffold, indicating the potent angiogenic effect of the released Cu2+.
AB - The local delivery of Cu2+ from copper-doped bioactive glass (Cu-BaG) was combined with 3D printing of polycaprolactone (PCL) scaffolds for its potent angiogenic effect in bone tissue engineering. PCL and Cu-BaG were, respectively, dissolved and dispersed in acetone to formulate a moderately homogeneous ink. The PCL/Cu-BaG scaffolds were fabricated via direct ink writing into a cold peg o ethanol bath. The architecture of the printed scaffolds, including strut diameter, strut spacing, and porosity, were investigated and characterized. The PCL/Cu-BaG scaffolds showed a Cu-BaG content-dependent mechanical property, as the compressive Young's modulus ranged from 7 to 13 MPa at an apparent porosity of 60%. The ion dissolution behavior in simulated body fluid was evaluated, and the hydroxyapatite-like precipitation on the strut surface was confirmed. Furthermore, the cytocompatibility of the PCL/Cu-BaG scaffolds was assessed in human bone marrow stem cell (hBMSC) culture, and a dose-dependent cytotoxicity of Cu2+ was observed. Here, the PCL/BaG scaffold induced the higher expression of late osteogenic genes OSTEOCALCIN and DLXS in comparison to the PCL scaffold. The doping of Cu 2 + in BaG elicited higher expression of the early osteogenic marker gene RUNX2a but decreased the expression of late osteogenic marker genes OSTEOCALCIN and DLX5 in comparison to the PCL/BaG scaffold, demonstrating the suppressing effect of Cu2+ on osteogenic differentiation of hBMSCs. In a coculture of hBMSCs and human umbilical vein endothelial cells, both the PCL/BaG and PCL/Cu-BaG scaffolds stimulated the formation of a denser tubule network, compared to the PCL scaffold. Meanwhile, only slightly higher gene expression of vWF was observed with the PCL/Cu-BaG scaffold than with the PCL/BaG scaffold, indicating the potent angiogenic effect of the released Cu2+.
KW - polycaprolactone
KW - copper-doped bioactive glass
KW - gradient porosity
KW - coculture of mesenchymal stem cells and endothelial cells
KW - 3D printing
KW - Tissue engineering scaffold
KW - polycaprolactone
KW - copper-doped bioactive glass
KW - gradient porosity
KW - coculture of mesenchymal stem cells and endothelial cells
KW - 3D printing
KW - Tissue engineering scaffold
KW - polycaprolactone
KW - copper-doped bioactive glass
KW - gradient porosity
KW - coculture of mesenchymal stem cells and endothelial cells
KW - 3D printing
KW - Tissue engineering scaffold
U2 - 10.1021/acsbiomaterials.9b00105
DO - 10.1021/acsbiomaterials.9b00105
M3 - Artikel
SN - 2373-9878
VL - 5
SP - 4496
EP - 4510
JO - ACS Biomaterials Science and Engineering
JF - ACS Biomaterials Science and Engineering
IS - 9
ER -