Poly(lactide-co-glycolide)/hydroxyapatite nanofibrous scaffolds fabricated by electrospinning for bone tissue engineering |
| |
Authors: | Lihong Lao Yingjun Wang Yang Zhu Yuying Zhang Changyou Gao |
| |
Affiliation: | (1) MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou, 310027, China; |
| |
Abstract: | 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. |
| |
Keywords: | |
本文献已被 PubMed SpringerLink 等数据库收录! |
|