Poly(lactide-co-glycolide)/hydroxyapatite nanofibrous scaffolds fabricated by electrospinning for bone tissue engineering

被引：0
作者：
Lihong Lao
Yingjun Wang
Yang Zhu
Yuying Zhang
Changyou Gao
机构：
[1] Zhejiang University,MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering
来源：
Journal of Materials Science: Materials in Medicine | 2011年 / 22卷
关键词：
Simulated Body Fluid; Composite Nanofibers; Composite Scaffold; Nanofibrous Scaffold; PLGA Scaffold;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Poly(lactide-co-glycolide) (PLGA) nanofibrous composite scaffolds having nano-hydroxyapatite particles (HAp) in the fibers were prepared by electrospinning of PLGA and HAp with an average diameter of 266.6 ± 7.3 nm. Microscopy and spectroscopy characterizations confirmed integration of the crystalline HAp in the scaffolds. Agglomerates gradually appeared and increased on the fiber surface along with increase of the HAp concentration. In vitro mineralization in a 5 × simulated body fluid (SBF) revealed that the PLGA/HAp nanofibrous scaffolds had a stronger biomineralization ability than the control PLGA scaffolds. Biological performance of the nanofibrous scaffolds of the control PLGA and PLGA with 5 wt% HAp (PLGA/5HAp) was assessed by in vitro culture of neonatal mouse calvaria-derived MC3T3-E1 osteoblasts. Both types of the scaffolds could support cell proliferation and showed sharp increase of viability until 7 days, but the cells cultured on the PLGA/5HAp nanofibers showed a more spreading morphology. Despite the similar level of the cell viability and cell number at each time interval, the alkaline phosphatase secretion was significantly enhanced on the PLGA/5HAp scaffolds, indicating the higher bioactivity of the as-prepared nano-HAp and the success of the present method for preparing biomimetic scaffold for bone regeneration.
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页码：1873 / 1884
页数：11
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