白血病原代骨髓基质细胞诱导Jurkat细胞基因差异表达研究

目的研究白血病骨髓基质细胞(bone marrow stromal cells,BMSCs)诱导Jurkat细胞相关基因表达的变化.方法采用Percoll体外分离正常人、初治急性白血病患者BMSCs;采用抑制性消减杂交技术建立白血病BMSCs诱导Jur-kat细胞差异表达基因的cDNA文库;并对差异表达的基因进行初步鉴定与分析.结果成功地建立了白血病BMSCs诱导的Jurkat细胞上调和下调差异表达基因的cDNA文库;初步筛选克隆到30个上调差异表达基因和22个下调差异表达基因cDNA片段;这些基因功能主要与细胞周期调控、细胞凋亡、细胞能量代谢有关.结论白血病BMSCs能诱导Jurkat细胞基因发生差异表达.

Screening differentially expressed genes in human leukemia cell line Jurkat induced by bone marrow stromal cells from leukemia patients

Objective To screen and analyze the differentially expressed genes of Jurkat cells cocultured with bone marrow stromal cells(BMSCs) from leukemia patients.Methods Suppression subtractive hybridization(SSH) was employed to establish subtracted cDNA library of differentially expressed genes in Jurkat cells cocultured with BMSCs from leukemia patients in vitro.The cDNA fragments were sequenced and analyzed.Results The differentially expressed gene cDNA library of Jurkat cells cocultured with BMSCs from leukemia patients in vitro was developed by SSH.Primary screening was done by reverse northern hybridization.Thirty up-regulated and 22 down-regulated cDNA fragments were isolated and sequenced,and sequence homology was performed by BLAST in GenBank.These genes were related to cell cycle regulation,cellular apoptosis and energy metabolism.The information of differentially expressed genes in Jurkat cells implied that their secretion function,cell cycle and apoptosis were affected by BMSCs from leukemia patients.Conclusion BMSCs from leukemia patients might influence gene expression of Jurkat cells.The differentially expressed genes might be significantly associated with the protection of BMSCs from leukemia patients on Jurkat cells during Daunorubicin exposure.