黄连素诱导大鼠骨髓间质干细胞分化为神经元样细胞

Rat mesenchymal stem cells differentiate into neuron-like cells induced by berberine in vitro

目的 :黄连素体外定向诱导SD大鼠骨髓间质干细胞分化为神经元样细胞。方法 :用全骨髓细胞悬液体外扩增和纯化骨髓间质干细胞。选用第 5代以后骨髓间质干细胞进行诱导分化 ,用含 10 μg/L碱性细胞生长因子 (bFGF)的完全培养液预诱导 2 4h ,后更换含黄连素的无血清DMEM诱导骨髓间质干细胞分化为神经元样细胞。免疫组化鉴定神经元烯醇酶 (NSE)、神经丝蛋白 (NF)、胶质纤维酸性蛋白 (GFAP)的表达。结果 :大鼠骨髓间质干细胞体外扩增第 5代后细胞形态达到均一 ,成梭形。加黄连素诱导 1h -8h ,间质干细胞胞体逐渐增大并伸出细长突起 ,形似神经细胞。免疫组化显示诱导的神经元样细胞NSE、NF表达阳性 ,GFAP阴性。结论

AIM: To investigate whether berberine can ind uce rat mesenchymal stem cells (MSCs) to differentiate into neuron -like cells in vitro. METHODS: MSCs were separated from young rat femurs marrow and expanded in culture medium. MSCs were induced to di fferentiate by berberine. The morphological changes of MSCs were evaluated by li g ht microscope.Neuron-spcific enolase (NSE), neurofilament (NF), glial fibrillary acidic protein (GFAP) were detected by immunohistochemistry. RESULTS: Induced by be rberine for 8 hours,MSCs exhibited neurotype . The expression of NSE and NF in the neuron-like cells was positive, but the glial astrocyte marker GFAP didn't express. CONCLUSION: Berberine may induce adult rat MSCs to differe ntiate into neuron-like cells in vitro.