【目的】研究体外培养骨髓来源的表达nestin的成年大鼠骨髓间质干细胞(MSC)并诱导分化神经元样细胞的潜能,为中枢神经系统疾病的细胞移植治疗提供理想的供体。【方法】采用全骨髓法分离培养成年SD大鼠MSC,传至第6代的MSC接种在前一天涂有100μg/L多聚赖氨酸的塑料培养瓶或培养皿中,用含100mL/LFBS的DMEM/F12培养液添加10ng/mL bFGF的培养液培养并以DMSO、BHA与Forskolin等诱导剂联合诱导MSC分化为神经元。流式细胞仪鉴定诱导前MSC的细胞表面抗原,免疫荧光检测诱导前及诱导后6h、12h、24h神经元特异性抗原nestin、NF-200和GFAP表达率。【结果】流式细胞仪检测传至第6代MSC表面抗原CD29和CD44阳性率分为98.8%,96.6%,CD34和CD45阴性。免疫荧光鉴定传至第6代的MSC表达nestin阳性率为57.1%±6.9%,不表达NF-200和GFAP。诱导后30min可见神经元样细胞出现,诱导后6h、12h、24h经nestin和NF-200免疫荧光鉴定,诱导后6h、12h、24 h nestin阳性率分别为96.5%±1.9%,88.1%±5.4%,33.5%±5.4%,NF-200阳性率分别为90.1%±2.9%,97.5%±1.3%,98.1%±1.6%。【结论】骨髓来源的nestin阳性的MSC具有神经祖细胞特性并且可诱导分化为神经元样细胞,可作为种子细胞用于神经系统疾病的治疗。
Mesenchymal stem cells (MSCs) are a population of multipotent cells that can proliferate and differentiate into marrow and non-marrow cell types, such as adipocytes, chondrocytes, myocytes, and so on. In recent years,...
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Mesenchymal stem cells (MSCs) are a population of multipotent cells that can proliferate and differentiate into marrow and non-marrow cell types, such as adipocytes, chondrocytes, myocytes, and so on. In recent years, many researchers have studied whether MSCs are capable of differentiation into neurons in vivo and ex vivo. The result that MSCs-derived neurons express NSE and NF, but don’t express GFAP suggests MSCs can differentiate into neurons, some researchers have achieved success in promoting functional recovery in Pakinsons and transactional spinal cord injury rat models by use of MSCs-derived neurons. Therefore, MSCs-derived neurons will play an important role in the therapy for a variety of diseases of the nervous system. [
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