Abstract

目的 构建人附睾ESCA2(hESCA2)的真核表达载体,分析其在COS-7细胞中的表达.方法 从人附睾cDNA文库中PCR扩增hESCA2片段,通过DNA重组构建真核表达载体pEGFP-N1-hESC42,瞬时转染COS-7细胞,应用RT-PCR、激光扫描共聚焦技术和Western blot检测融合蛋白的表达.结果 成功地构建了真核表达载体pEGFP-N1-hESC42;以重组载体转染COS-7细胞后,RT-PCR结果 显示hESC42与EGFP在mRNA水平正确拼接;共聚焦证实有hESCA2融合蛋白的表达;转染细胞的培养上清浓缩后,进行SDS-PAGE及Western blot分析,可检出hESC42融合蛋白的表达.结论 成功地构建了hESC42基因,并可在COS-7细胞中分泌表达,为其功能研究提供线索。

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