期刊论文

Li, Z.Y.

中文

南方医科大学学报

1673-4254

2011

31

11

1830-1834

44-1627/R.20111107.0916.005

30970165,81102230:国家自然科学基金 09JJ3059:湖南省自然科学基金 2010]53:湖南省高等学校科技创新团队支持计划

本校为第一机构

目的克隆表达沙眼衣原体pORF8质粒蛋白,并在衣原体感染细胞中对其进行定位分析。方法 PCR法扩增pORF8基因,并将其定向插入pGEX-6p载体构建原核表达重组体pGEX-6p/pORF8,重组体转化E.coli XL1Blue后经IPTG诱导表达pORF8融合蛋白,融合蛋白经Glutathione Sepharose亲和层析纯化后免疫Balb/C鼠,制备pORF8多克隆抗体;应用免疫荧光试验对pORF8质粒蛋白进行定位。结果 pORF8基因全长为744 bp,编码247个氨基酸残基,pGEX-6p/pORF8在大肠杆菌中表达相对分子质量约为54 000的GST-pORF8融合蛋白,间接免疫荧光实验结果显示pORF8在感染细胞中的表达模式与主要外膜蛋白基本一致,而与衣原体蛋白酶样活性因子分布...

OBJECTIVE: To clone the plasmid protein pORF8 of Chlamydia trachomatis and localize its expression in Chlamydia-infected cells. METHODS: pORF8 gene was amplified and cloned into pGEX-6p vector, and the pORF8 fusion protein was expressed in E.coli XL1 Blue. After purification with glutathione-conjugated agarose beads, the pORF8 fusion protein was used to immunize BALB/c mice to generate polyclonal antibodies against pORF8 protein. The antibodies obtained were used to localize the plasmid protein pORF8 in Chlamydia-infected cells with immunofluorescence assay (IFA). RESULTS: The pORF8 gene 744 b...