LRP15基因的表达谱分析及其在白血病细胞中的表达

为检测LRP15基因在肿瘤细胞以及处于不同发育阶段造血细胞的表达状况 ,探讨其在肿瘤发生、发展以及在白血病分型预后中可能具有的作用 ,利用NCBI提供的SAGE文库及NCI提供的正常组织及肿瘤细胞基因表达数据库 ,分析比较了LRP15基因在多种肿瘤组织、细胞系和正常组织中的表达谱 ;采用RT PCR方法检测了该基因在正常血细胞及原代白血病细胞中的表达状况。结果显示 ,LRP15在人类多种正常组织及肿瘤细胞中有表达 ;在幼稚细胞中表达阳性率高于成熟细胞 (P <0 .0 1) ,在急性髓细胞白血病中M1、M2 和M3 表达的阳性率高于其它亚型 (P <0 .0 1) ;难治组LRP15表达的阳性率有高于初治组的趋势。结论 ,LRP15基因与急性白血病及其它多种肿瘤的发生、发展密切相关 ,对急性白血病的临床分型具有重要的意义 ,可能对判断急性白血病的预后具有一定价值。

Analysis of LRP15 Gene Expression Pattern and Its Expression in Leukemia Cells

To explore the possible function of LRP15 gene in carcinogenesis and its significance in the classification and prognosis of leukemia, the expression pattern of LRP15 in normal tissues, tumor tissues and cell lines was detected with SAGE and gene expression database provided by NCBI and NCI respectively. RT PCR was used to detect the expression of LRP15 in leukemia patients. The results showed that LRP15 was expressed in different tissues and tumor cell lines, the positive rate of LRP15 in immature blood cells was higher than that of mature blood cells and the positive rate of M 1, M 2 and M 3 was higher than that of other AML subtypes(P<0.01), the expression of LRP15 in refractory leukemia was higher than that of de novo leukemia. The results suggest that LRP15 may play an important role in carcinogenesis, AML classification and acute leukemia prognosis.