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From all-trans retinoic acid (ATRA)-treated human lung adenocarcinoma GLC-82 cells and control, subtractive cDNA library has been constructed using subtractive hybridization technique in our laboratory. The screening of the cDNA subtractive library resulted in identification of a clone containing cDNA fragment of one ATRA-induced gene (RAI) in GLC-82 cells. The positive clone with full-length cDNA of RAI was identified by screening fetal brain cDNA library using colony hybridization technique, and then sequenced. RT-PCR results showed that RAI was expressed in many different human fetal tissues. These results suggest that RAI may be involved in cell differentiation and play an important role in vital activities of cells. 相似文献
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通过进一步分析采用全反式维甲酸(all trans retinoic acid,ATRA)诱导人肺腺癌GLC-82细胞,经cDNA文库消减杂交构建的cDNA消减文库,得到一在ATRA诱导GLC-82细胞分化过程中激活表达(retinoic acid induced,RAI)的基因的cDNA片段,应用菌落原位杂交技术在胎脑cDNA文库中进行筛选,克隆RAI的全长cDNA序列并测序.RT-PCR分析表明,RAI在多种胎儿组织中表达.结果表明,RAI可能与细胞分化有关,并在细胞基本生命活动中发挥重要作用. 相似文献
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