采用cDNA的末端快速扩增(Rapid amplificationn of cDNA ends)技术,以代表性差异分析cDNA-RDA(Representational difference analysis of cDNA)技术获得的低温诱导甜菜茎尖中差异表达的基因片段为模板,进行巢式PCR扩增,然后根据RACE拼...采用cDNA的末端快速扩增(Rapid amplificationn of cDNA ends)技术,以代表性差异分析cDNA-RDA(Representational difference analysis of cDNA)技术获得的低温诱导甜菜茎尖中差异表达的基因片段为模板,进行巢式PCR扩增,然后根据RACE拼接结果合成引物,分别以低温诱导的cDNA和DNA为模板进行PCR扩增,克隆测序后获得1个全长609 bp的cDNA和855 bp的DNA,分别命名为Ty7Br600和Ty7Br900,在GenBank注册,登录号分别为AY324115和AY324114。在GenBank库中的核苷酸序列比较未发现它们的同源序列,因此认为这个cDNA序列可能是甜菜的一个新基因。展开更多
Objective: To identify aberrant gene expression in primary human T-cell acute lymphoblastic leukemia (T-ALL) and to evaluate the differently expressed level of Lyll and LMO2 genes in human LMO2 positive/TALl negati...Objective: To identify aberrant gene expression in primary human T-cell acute lymphoblastic leukemia (T-ALL) and to evaluate the differently expressed level of Lyll and LMO2 genes in human LMO2 positive/TALl negative T-ALL tumors. Methods: Three methods, representational difference analysis (RDA) of cDNA, cDNA microarrays and RT-PCR were used to detect if Lyll and LMO2 genes were differently expressed in human LMO2 positive/tall negative T-ALL tumors. Results: The results of cDNA RDA and cDNA array shown that Lyll and LMO2 genes are differently expressed in human T-cell tumors. The result of RT-PCR also shown Lyll and LMO2 are high expressed in human T-cell tumors and very low level or no expressed in normal group. Conclusion: We have found that cDNA RDA and cDNA microarray can be successfully used to identify aberrant gene expression in T-ALL cells. In the study described in this manuscript we found that Lyll and LMO2 are aberrantly expressed in human T-ALL LMO2 positive/TALl negative T-ALL tumors.展开更多
文摘Objective: To identify aberrant gene expression in primary human T-cell acute lymphoblastic leukemia (T-ALL) and to evaluate the differently expressed level of Lyll and LMO2 genes in human LMO2 positive/TALl negative T-ALL tumors. Methods: Three methods, representational difference analysis (RDA) of cDNA, cDNA microarrays and RT-PCR were used to detect if Lyll and LMO2 genes were differently expressed in human LMO2 positive/tall negative T-ALL tumors. Results: The results of cDNA RDA and cDNA array shown that Lyll and LMO2 genes are differently expressed in human T-cell tumors. The result of RT-PCR also shown Lyll and LMO2 are high expressed in human T-cell tumors and very low level or no expressed in normal group. Conclusion: We have found that cDNA RDA and cDNA microarray can be successfully used to identify aberrant gene expression in T-ALL cells. In the study described in this manuscript we found that Lyll and LMO2 are aberrantly expressed in human T-ALL LMO2 positive/TALl negative T-ALL tumors.