丝素
材料科学
自愈水凝胶
纳米纤维
复合数
细胞外基质
组织工程
骨愈合
脚手架
丝绸
纳米颗粒
纳米技术
复合材料
生物医学工程
化学
高分子化学
解剖
医学
生物化学
作者
Y. F. Cheng,Gu Cheng,Congyong Xie,Chengcheng Yin,X. Dong,Zhi Li,Xue Zhou,Qun Wang,Hongbing Deng,Zubing Li
标识
DOI:10.1002/adhm.202001646
摘要
Abstract Various materials are utilized as artificial substitutes for bone repair. In this study, a silk fibroin (SF) hydrogel reinforced by short silica nanoparticles (SiNPs)‐distributed‐silk fibroin nanofibers (SiNPs@NFs), which exhibits a superior osteoinductive property, is fabricated for treating bone defects. SF acts as the base part of the composite scaffold to mimic the extracellular matrix (ECM), which is the organic component of a native bone. The distribution of SiNPs clusters within the composite hydrogel partially mimics the distribution of mineral crystals within the ECM. Incorporation of SiNPs@NFs enhances the mechanical properties of the composite hydrogel. In addition, the composite hydrogel provides a biocompatible microenvironment for cell adhesion, proliferation, and osteogenic differentiation in vitro. In vivo studies confirm that the successful repair is achieved with the formation of a large amount of new bone in the large‐sized cranial defects that are treated with the composite hydrogel. In conclusion, the SiNPs@NFs‐reinforced‐hydrogel fabricated in this study has the potential for use in bone tissue engineering.
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