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中文摘要：
摘要：组织工程软骨的体外构建被认为是一种有希望治疗关节软骨缺损的有效途径.为评估载脂肪干细胞（Adipose-derivedstemcells,ADSCs）壳聚糖/明胶水凝胶支架,在体外动态构建组织工程软骨相对传统静态培养的优势,本研究用壳聚糖/明胶制备了软骨仿生支架,并检测其物理性质.在制备的水凝胶支架上以1×10^7cells/mL密度接种ADSCs后,分别置于转瓶及TG瓶的软骨诱导基中培养两周,通过试剂染色、代谢检测和电镜观察,考察了细胞的软骨分化能力、活性、生长分布、渗透深度、增殖及胞外基质分泌情况.结果表明,壳聚糖/明胶支架的平均孔径为118.25±19.51μm,孔隙率为82.60±2.34%,吸水率为361.28±0.47%,弹性模量为61.2±0.16kPa,具有良好生物相容性.ADSCs生长状态良好,可向软骨细胞分化,适于作为组织工程软骨构建的种子细胞.表征结果显示,转瓶内水凝胶支架中细胞蛋白多糖的表达更显著,细胞生长分布更加均匀,细胞外基质分泌基本填满整个支架.因此,转瓶载壳聚糖/明胶支架所提供的三维动态环境,是体外构建组织工程软骨的良好方法.
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