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Construction of natural antibacterial endo-polypeptide elafin's eukaryotic expression vector and its expression in eukaryotic cell
Pages: 608-
610
Year: 2005
Issue:
10
Journal: CHINESE JOURNAL OF ANTIBIOTICS
Keyword: Elafin; 真核表达载体; 抗菌多肽;
Abstract: 采用RT-PCR法提取天然内生抗菌多肽elafin的基因,通过测序确认后亚克隆构建真核表达载体pEGFP-N1-elafin,再转染至肺上皮细胞A549,荧光显微镜观察pEGFP-N1-elafin在细胞中表达及定位,采用Northern杂交、ELISA检测法分别从转录及蛋白质水平分析表达情况,最后通过酶切电泳鉴定证实真核表达载体pEGFP-N1-elafin构建成功,其转染细胞中有elafin的基因表达,且细胞上清液中elafin含量证实其主要是分泌性表达.Elafin基因cDNA真核表达载体的成功构建以及主要呈分泌性表达的特点显示了极具意义的潜在应用价值.
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