Abstract
目的 研究大鼠脂肪干细胞(ADSCs)在体外分化为类许旺细胞的表型和功能特征,为外周神经组织工程应用提供实验基础.方法 采用β-巯基乙醇、全反式视黄酸、forskolin、血小板源生长因子、碱性成纤维细胞生长因子和heregulin依次联合诱导,双重免疫荧光细胞化学法和Western blot鉴定神经胶质纤维酸性蛋白(GFAP)和S-100蛋白等许旺细胞标志蛋白的表达,与原代背根神经节(DRG)感觉神经元共培养研究诱导后细胞的功能.结果 诱导后ADSCs形态类似许旺细胞.双重免疫荧光细胞化学法显示S-100和GFAP的最高表达率分别为(78.08±6.08)%和(72.38±6.43)%,双重表达率为(60.76±6.43)%.Western blot显示诱导后细胞同时表达这两种蛋白.诱导后细胞能明显增加DRG神经元的突起向外生长.结论 诱导后ADSCs的表型和功能特征证实大鼠ADSCs在体外可分化为类许旺细胞。
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