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首页> 外文期刊>Macromolecular symposia >Design of 3D Hybrid Composite Scaffolds: Effect of Composition on Scaffold Structure and Cell Proliferation
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Design of 3D Hybrid Composite Scaffolds: Effect of Composition on Scaffold Structure and Cell Proliferation

机译:3D混合复合支架的设计:组成对支架结构和细胞增殖的影响

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摘要

The aim of this study was to develop multi-phase composite 3D scaffolds and to investigate the in vitro degradation performance, the cell seeding capacity and cells proliferation onto/into the composite scaffolds. Multi-phase composite scaffolds were formulated by solvent casting and particulate leaching technique, hydroxyapatite (HAP) was used to improve the mechanical properties of poly[(DL-lactide)-coglycolide] (PLGA) polymer scaffold, while chitosan (CTS) was added to the formulation for its bioactivity, osteoconductivity and bioadhesive properties. The in vitro degradation results demonstrated that the composite scaffold had a degradation rate correlating with their composition and structural features. Adult fibroblast cells were seeded on the surface of the composite scaffolds. Cell viability and long-term proliferation onto/into composite scaffolds were evaluated. The results showed that viable cells attached on the surface of scaffolds gradually migrated into the porous scaffold. These results suggest that the two-phase scaffold, namely PLGA/HAP and PLGA/CTS composite scaffolds, are promising grafts for bone tissue engineering. Further studies are in progress to design an improved three-phase composite construct obtained combining PLGA, HAP and CTS in a wafer-like scaffold.
机译:这项研究的目的是开发多相复合3D支架,并研究复合支架上的体外降解性能,细胞接种能力和细胞增殖。通过溶剂浇铸和微粒浸出技术配制多相复合支架,使用羟基磷灰石(HAP)改善聚[(DL-丙交酯)-共乙交酯](PLGA)聚合物支架的机械性能,同时添加壳聚糖(CTS)制剂具有生物活性,骨传导性和生物粘附特性。体外降解结果表明,复合支架的降解速率与其组成和结构特征相关。将成年成纤维细胞接种在复合支架的表面上。评价了在复合支架上的细胞生存力和长期增殖。结果表明,附着在支架表面的活细胞逐渐迁移到多孔支架中。这些结果表明,两相支架,即PLGA / HAP和PLGA / CTS复合支架,有望用于骨组织工程。进一步的研究正在进行中,以设计将PLGA,HAP和CTS结合在一起的改进的三相复合结构,该结构在晶片状支架中得到。

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