首页|骨髓间充质干细胞建立的成骨细胞培养模型的研究

骨髓间充质干细胞建立的成骨细胞培养模型的研究

扫码查看
目的:为骨折骨缺损治疗的基础实验研究建立理想的细胞模型,观察兔骨髓间充质干细胞(BMSCs)在体外培养状态下的生长情况,对其向成骨细胞分化及分化能力进行研究.方法:采用全骨髓密度梯度离心法联合差速贴壁法从兔股骨骨髓中提取、分离、纯化BMSCs,取第3代BMSCs细胞分为两组进行培养,A组:为用含有诱导剂的低糖DMEM培养基的诱导培养组;B组:为常规培养组.倒置显微镜及HE染色观察记录各代次细胞形态等特征;CD44.,CD90检测细胞表形,通过碱性磷酸酶(ALP)染色及标准化钙结节计数,鉴定细胞成骨活性.结果:兔骨髓间充质干细胞生长状态良好,培养7 d后各组细胞形态趋于一致,多呈长梭形,培养2 wk后对两组细胞进行ALP染色,可见A组细胞质内ALP染色阳性反应明显,B组染色显色弱.21 d时A组细胞茜素红染色后钙化结节数量多且较大,B组有少量钙结节形成,但较小.A组标准化钙结节计数显著高于B组差异具有显著统计学意义(P<0.05).结论:通过密度梯度离心法联合差速贴壁法所获得的BMSCs在常规培养或诱导培养时均可表现出成骨潜能,但诱导培养组的BMSCs的ALP活性更强,成骨能力更确切,可为骨组织工程远期实验研究提供理想的细胞模型.
Establishment and evaluation of rabbit osteoblast cell culture model based on BMSCs
AIM: To establish a cell culture model for bone disease research, investigate rabbit BMSCs' growth and differentiation in vitro. METHODS: Bone marrow mesenehymal stem cells were cultured by density gradient centrifugation and attachment, random select two group from the third generation. Group A; induced by low carbohydrates DMEM; Group B; negative group. The growth of rBMSCs was observed inverted-microscopically, CD44,CD90 were detected, also the HE and ALP stains, assess the activity of cell and counter the mineralized nodus. RESULTS: There were no significant difference between each groups after 7 d culture, the cells apparent long fusiform shape, ALP stains shows significant positive in group A compared with group B after 2 weeks. Mineralized nodus counters show significant higher in group A compared with group B in alizarin red stain after 21 d culture ( P < 0. 05). CON CLUSION; Co-application of density gradient centrifugation and attachment in BMSCs cuture shows high capacity of ossification and better activity of ALP, which can provide a cell culture model for bone tissue engineering.

BMSCsosteoblastcell culture

于利峰、孔令擘、朱庆生

展开 >

第四军医大学西京医院全军骨科研究所,陕西西安710033

骨髓间充质干细胞 成骨细胞 细胞培养

2009

第四军医大学学报
第四军医大学

第四军医大学学报

CSTPCDCSCD北大核心
影响因子:0.599
ISSN:1000-2790
年,卷(期):2009.30(23)
  • 3
  • 3