摘要
目的 :建立并优化骨髓间充质干细胞 (mesenchymalstemcells ,MSCs)分离纯化及培养扩增的方法。方法 :利用Percoll( 1.0 73g/ml)及Ficoll Hypaque( 1.0 77g/ml)两种分离介质分离骨髓单个核细胞 ,筛选体外培养MSCs适宜的血清及浓度 ,通过流式细胞术分析鉴定MSCs的纯度。结果 :经Percoll分离 ,应用 10 %筛选出的血清培养与扩增的MSCs ,细胞纯度可达 95%左右 ;相反 ,应用常规Ficoll Hypaque分离骨髓单个核细胞或增加血清浓度 ,MSCs纯度显著下降。结论 :建立了一种稳定而实用的体外分离与培养MSCs的方法。
Objective: To establish a method for isolation and cultivation of mesenchymal stem cells (MSCs) from human bone marrow. Methods: Human bone marrow mononuclear cells were separated by gradient centrifugation on Percoll (density 1.073 g/ml) or Ficoll Hypaque (1.077 g/ml). The cells were incubated in DMEM (low glucose) with 10% or 20% newborn bovine serum from selected lots. The purity of MSCs was analyzed by flow cytometry. Results: The purity of MSCs collected by Percoll and cultured in medium containing 10% NBS was around 95% as assessed by flow cytometry.The purity of MSCs was much lower, nevertheless, when the cells separated by Ficoll centrifugation and / or cultured in medium with 20% NBS. Conclusions: A stable and practical method was established for separation and subsequent cultivation of human bone marrow mesenchymal stem cells. [
出处
《军事医学科学院院刊》
CSCD
北大核心
2000年第4期282-284,共3页
Bulletin of the Academy of Military Medical Sciences
基金
国家"九七三"项目资助!课题 (G19990 5 430 2 )
关键词
骨髓
间充质干细胞
分离
培养
流式细胞学
mesenchymal stem cells
bone marrow
cells,cultured
flow cytometry
