Lin-CD34-与Lin-CD34+细胞差异表达基因的鉴定

目的 克隆并鉴定Lin^-CD34^-细胞区别于Lin^-CD34^ 细胞的可能与其性状相关的基因。方法 以uLin^-CD34^-细胞作为检测对象，Lin^-CD34 细胞作为驱动细胞，应用抑制消减杂交技术构建Lin^-CD34^-细胞的cDNA消减库。选取部分克隆测序，测序结果与GenBank进行同源性比较和功能分析。结果 共获得593个含有插入片段的克隆，片段的长度为300～500bp。随机选取53条EST进行测序，其中37条EST代表了10个已知基因，其余16条EST。代表了4个未知序列。结论 利用抑制消减杂交技术鉴定出部分Lin^-CD34^-细胞特异表达的基因，可能与Lin^-CD34^-细胞的特性相关。

Identification of differentially expressed genes in Lin-CD34- and Lin-CD34+ cells

OBJECTIVE: To identify genes that differentially expressed in Lin(-)CD(34)(-) and Lin(-)CD(34)(+) cells. METHODS: With Lin(-)CD(34)(-) cells as tester and Lin(-)CD(34)(+) cells as driver, cDNA subtractive library for Lin(-)CD(34)(-) cells was constructed using suppression subtractive hybridization technique. Part of clones in the library were sequenced and the homologue analysis was conducted against the DNA database in GenBank. RESULTS: 593 clones containing an average of 300 - 500 bp insert were identified. Of them, 53 randomly selected ESTs were sequenced. Homologue analysis revealed that 37 ESTs represented 10 known genes, and the other 16 ESTs represented 4 novel sequences. CONCLUSION: Part of specifically expressed genes in Lin(-)CD(34)(-) cells were identified, which maybe related to Lin(-)CD(34)(-) cells' specific characteristics.