骨髓间充质干细胞向神经元的诱导分化  

Induction of Differentiation of Bone Marrow Mesenchymal Stem Cells into Neurons

作　　者：郭丽[1] 尹飞[2] 王晓丽[1] 孟洪琪[1] 凌翎[1] 呼合塔娜[1] 范洪学[1] 

机构地区：[1]吉林大学公共卫生学院毒理学教研室,吉林长春130021 [2]吉林大学中日联谊医院骨科

出　　处：《吉林大学学报（医学版）》2003年第1期51-53,T001,共4页Journal of Jilin University：Medicine Edition

基　　金：吉林省卫生厅医学科研基金资助课题 (2 0 0 131)

摘　　要：目的 :探讨大鼠骨髓间充质干细胞 ( rat mesenchymal stem cells,r MSCs)体外诱导分化成神经元的能力。方法 :用 0 .2 5、0 .5、1 .0 mmol· L-1IBMX诱导传代的 r MSCs,待细胞分化后进行形态学观察 ,并用免疫细胞化学方法进行细胞鉴定。结果 :0 .5 mmol· L-1IBMX诱导细胞效果最好 ,2 d即可见有神经元样细胞出现 ,6d神经元样细胞占细胞总数的 ( 2 3.2± 2 .3) %,NSE染色阳性。未分化细胞表达 nestin,诱导 3d,阳性细胞增多 ,6d减少。结论 :体外 r MSC能扩增、传代 。Objective: To observe whether rat bone marrow mesenchymal stem cells (rMSCs) could differentiate into neurons in vitro. Methods: Passaged rMSCs were induced by incubation with 0.25,0.5 and 1.0 mmol·L -1 IBMX,respectively. The differentiated neuron like cells were identified with inverted microscopy and immunocytochemistry. Results: The optic induce concentration of IBMX was 0.5 mmol·L -1 . Typical neuron like cells were observed as early as two days later. After 6 days, neuron like cells with typical neural cell morphology and NSE positive accounted for about (23.2±2.3)% of the total population. Untreated rMSCs expressed nestin, the nestin positive cells increased on 3 rd after being induced by IBMX, and nestin positve cells decreased on 6 th after being induced by IBMX. Conclusion:In vitro rMSCs are expanded, passaged and induced to differentiated into neuron like cells.

关 键 词：骨髓细胞 间充质干细胞 神经元样细胞 细胞分化 

分 类 号：Q254[生物学—细胞生物学] R－332[医药卫生]