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  • Title: Synthesis of the New-Type Vascular Endothelial Growth Factor-Silk Fibroin-Chitosan Three-Dimensional Scaffolds for Bone Tissue Engineering and In Vitro Evaluation.
    Author: Tong S, Xu DP, Liu ZM, Du Y, Wang XK.
    Journal: J Craniofac Surg; 2016 Mar; 27(2):509-15. PubMed ID: 26890455.
    Abstract:
    The objective of the study was to discuss the biocompatibility of the vascular endothelial growth factor-silk fibroin-chitosan (VEGF-SF-CS) scaffolds. To offer an ideal scaffold for bone tissue engineering, the author added vascular endothelial growth factor (VEGF) into silk fibroin-chitosan (SF-CS) scaffold directly to reconstruct a three-dimensional scaffold for the first time, SF-CS scaffold was loaded with VEGF and evaluated as a growth factor-delivery device. Human fetal osteoblast cell was seeded on the VEGF-SF-CS scaffolds and SF-CS scaffolds. On VEGF-SF-CS and SF-CS scaffolds, the cell adhesion rate was increased as time went on. Scanning electron microscopy: the cells grew actively and had normal multiple fissions, granular and filamentous substrates could be seen around the cells, and cell microfilaments were closely connected with the scaffolds. The cells could not only show the attached growth on surfaces of the scaffolds, but also extend into the scaffolds. Cell Counting Kit-8 and alkaline phosphatase analysis proved that the VEGF could significantly promote human fetal osteoblast1.19 cells growth and proliferation in the SF-CS scaffolds, but the enhancement of osteoblasts cell proliferation and activity by VEGF was dependent on time.
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