麝香多肽体外诱导成年大鼠和人骨髓间充质干细胞定向分化为神经元的研究

目的:观察麝香多肽体外定向诱导成年大鼠和人骨髓间质干细胞(Bonemarrowmesenchymalstemcells,BMMSCs)分化为神经元的能力。方法:采用含100-150mg/L麝香多肽的无血清L-DMEM培养基诱导成年大鼠和人BMMSCs分化为神经元,免疫组化鉴定神经元烯醇化酶(NSE)、神经丝蛋白(NF)、胶质纤维酸性蛋白(GFAP)、神经巢蛋白(nestin)的表达。结果:成年大鼠和人BMMSCs在加入含麝香多肽的无血清L-DMEM培养基诱导后,BMMSC胞体收缩,突起伸出,形似神经元;免疫组化显示诱导出的神经元样细胞NSE、NF、nestin表达阳性,GFAP阴性。结论:麝香多肽可以在体外诱导成年大鼠和人BMMSCs定向分化为神经元。

Adult rat and human bone marrow mesenchymal stem cells differentiate into neurons with Musk's polypeptide

AIM: To investigate the differentiation from adult rat and human bone marrow mesenchymal stem cells (BMMSCs) into neuron with musk polypeptide (Mu-P).METHODS: Adult rat and human BMMSCs were induced with Mu-P.Neuron-specific enolase (NSE),neurofilament (NF),Nestin,glial fibrillary acidic protein (GFAP) were detected by immunohistochemistry.RESULTS: Simple methods with Mu-P induced adult rat and human BMMSCs exhibiting a neuronal phenotype,expressing Nestin at 3 hours to 5 hours,and expressing NE and NF at 5 hours to 7 days.But the neuron-like cells didn't express the glial astrocyte marker GFAP.CONCLUSION: Adult rat and human BMMSCs can be induced to differentiate into neurons with Mu-P.