作者：Li Chen,Zhenxu Wu,Yulai Zhou,Linlong Li,Yu Wang,Zongliang Wang,Yue Chen, Peibiao Zhang.
关键字：collagen, hydroxyapatite, tissue engineering, bone repaier
论文来源：期刊
具体来源：Journal of Applied Polymer Science, 2017, DOI: 10.1002/app.45271.
发表时间：2017年
Bone defect and osteochondral injury frequently occur due to diseases or traumatism and bring a crucial challenge in orthopedics. The hybrid scaffold has shown promise as a potential strategy for the treatment of such defects. In this study, a novel biomimetic porous collagen (Col)/hydroxyapatite (HA) scaffold was fabricated through assembling layers of Col containing gradual amount of HA under the assistance of “iterative layering” freeze-drying process. The scaffold presents a double gradient of highly interconnected porosity and HA content from top to bottom, mimicking the inherent physiological structure of bone. Owing to the biomimetic structure and component, significant increase of cell proliferation, alkaline phosphatase activity, and osteogenic differentiation in vitro was observed, illustrating potential application of the excellent Col/HA scaffold as a promising strategy for bone tissue engineering.