Vascularized 3D printed scaffolds for promoting bone regeneration

A1 Journal article (refereed)


Internal Authors/Editors


Publication Details

List of Authors: Yufei Yan, Hao Chen, Hongbo Zhang,Changjun Guo, Kai Yang, Kaizhe Chen, Ruoyu Cheng, Niandong Qian, Niklas Sandler, Yu Shrike Zhang, Haokai Shen, Jin Qi, Wenguo Cui, Lianfu Deng
Publisher: Elsevier
Publication year: 2019
Journal: Biomaterials
Volume number: 190-191
Start page: 97
End page: 110


Abstract

3D printed scaffolds hold promising perspective for bone tissue regeneration. Inspired by process of bone development stage, 3D printed scaffolds with rapid internal vascularization ability and robust osteoinduction bioactivity will be an ideal bone substitute for clinical use. Here, we fabricated a 3D printed biodegradable scaffold that can control release deferoxamine, via surface aminolysis and layer-by-layer assembly technique, which is essential for angiogenesis and osteogenesis and match to bone development and reconstruction. Our in vitro studies show that the scaffold significantly accelerates the vascular pattern formation of human umbilical endothelial cells, boosts the mineralized matrix production, and the expression of osteogenesis-related genes during osteogenic differentiation of mesenchymal stem cells. In vivo results show that deferoxamine promotes the vascular ingrowth and enhances the bone regenerationat the defect site in a rat large bone defect model. Moreover, this 3D-printed scaffold has excellent biocompatibility that is suitable for mesenchymal stem cells grow and differentiate and possess the appropriate mechanical property that is similar to natural cancellous bone. In summary, this 3D-printed scaffold holds huge potential for clinical translation in the treatment of segmental bone defect, due to its flexibility, economical friendly and practicality.


Keywords

3D printed scaffolds, Angiogenesis and osteogenesis, Bone regeneration, controlled release

Last updated on 2019-21-09 at 03:31