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脐带血来源基质细胞培养及造血微环境的建立

Culture of stromal cells from human umbilical cord blood and establishment of hemopoietic microenvironment
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摘要 目的:研究脐带血来源的基质细胞对脐血CD34+细胞体外扩增的促进作用。方法:应用MACS磁珠分离系统分离脐血CD34+细胞,通过细胞因子对脐血前体基质细胞体外诱导,使其产生基质细胞和形成造血微环境。观察基质细胞的生长状态和细胞表面分子的表达,并建立以该基质细胞为滋养层的脐血造血干细胞体外扩增体系。结果:细胞因子联合培养对CFU-GM增长没有明显影响,但对于CFU-E的形成和细胞增长的影响细胞因子组和细胞因子+基质细胞组所培养的CPU-E与对照组比较差异有显著性(P<0.05或P<0.01)。脐带血来源的基质细胞分泌细胞因子的时间-效应曲线显示,脐血基质细胞培养3、7、10、14和20 d后,TPO、SCF浓度在培养第7天时达到最高,而GM-CSF在第7天以后则逐渐降至最低。在脐血基质细胞作为滋养层的扩增体系中,加入相应的细胞因子可以使脐血造血细胞明显扩增,其中细胞因子(SCF+IL-3+EPO+TPO+GM-CSF)联合基质细胞培养体系的扩增作用最强。结论:应用细胞因子可以体外培养脐血前体基质细胞产生脐血基质细胞,并可在该基础上形成造血微环境支持体外造血。
出处 《吉林大学学报(医学版)》 CAS CSCD 北大核心 2008年第3期535-537,F0003,共4页 Journal of Jilin University:Medicine Edition
基金 广西省科技厅基金资助课题(0249020)
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参考文献8

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