中国血吸虫病防治杂志 ›› 2016, Vol. 28 ›› Issue (1): 34-38.DOI: 10.16250/j.32.1374.2015168

• 论著 • 上一篇    下一篇

恶性疟原虫配子体期特异性蛋白Pfgdv1 克隆 表达及鉴定

苏胖胖,孟令文,李江艳,陶志勇,陈勇,乔继琛,武肖肖,金赟,王好鹏,方强,王雪梅,夏惠*   

  1. 蚌埠医学院病原生物学教研室、 安徽省感染与免疫重点实验室 (蚌埠233030)
  • 出版日期:2016-02-23 发布日期:2016-02-23
  • 通讯作者: 夏惠
  • 作者简介:苏胖胖, 男, 硕士。研究方向: 感染与免疫
  • 基金资助:
    蚌埠医学院研究生科研创新计划资助项目 (Byycx1402); 安徽省教育厅自然科学研究重点项目 (KJ2012?A?200); 安徽省大学生创 新训练计划项目 (AH201410367046、 AH201410367041); 国家级大学生创新训练计划项目 (201410367046、 201410367041)

Cloning, expression and identification of gametocyte specific protein Pfgdv1 of Plasmodium falciparum

SU Pang-pang, MENG Ling-wen, LI Jiang-yan, TAO Zhi-yong, CHEN Yong, QIAO Ji-chen, WU Xiao-xiao, JIN-Yun, WANG Hao-peng, FANG Qiang, WANG Xue-mei, XIA Hui*   

  1. Department of Microbiology and Parasitology, Bengbu Medical College, Anhui Key Laboratory of Infection and Immunity, Bengbu 233030, China
  • Online:2016-02-23 Published:2016-02-23
  • Contact: XIA Hui

摘要: 目的 目的 克隆恶性疟原虫配子体期特异性基因 (Plasmodium falciparum gametocyte development 1 gene,Pfgdv1), 体外表达和鉴定重组Pfgdv1蛋白。方法 方法 通过PCR法从恶性疟原虫感染病人血液DNA样本中扩增Pfgdv1基因, 插入到 原核表达载体pET28a (+), 构建pET28a?Pfgdv1重组表达质粒, 转化至大肠埃希菌 (E. coli) BL21 (DE3+), 通过异丙基?β?D? 硫代吡喃半乳糖苷诱导表达重组蛋白, 经Ni + ?亲和层析柱纯化重组蛋白, 纯化产物经十二烷基磺酸钠?聚丙烯酰胺凝胶电 泳 (SDS?PAGE) 和Western blotting鉴定。结果 结果 PCR扩增的Pfgdv1基因长度约为1.65 kb, 重组pET28a?Pfgdv1质粒构建 成功, 插入方向正确无框移, 转化至E. coli BL21 (DE3+) 所表达的重组蛋白分子量约为67 kDa, 且能被抗His标签单克隆 抗体识别。结论 结论 成功克隆了Pfgdv1基因, 表达并纯化了重组Pfgdv1蛋白, 为进一步研究恶性疟原虫配子体期传播阻断 疫苗奠定了基础。

关键词: 恶性疟原虫, Pfgdv1, 配子体, 传播阻断疫苗, 原核表达

Abstract: Objective Objective To clone a gametocyte specific protein Pfgdv1 of Plasmodium falciparum,express and identify re? combinant Pfgdv1 protein in vitro. Methods Methods PCR was performed to amplify Pfgdv1 from P. falciparum DNA which was got from the patient who was infected with P. falciparum,and the PCR product was inserted into pET28a(+)vector. pET28a?Pfg? dv1 recombinant plasmid was constructed and transformed into E. coli host BL21(DE3+) . IPTG was used to induce the recombi? nant Pfgdv1 protein fused with His tag,and the protein was purified by His?NTA affinity chromatography. The recombinant pro? tein was identified by SDS?PAGE and Western blotting. Results Results The PCR product of Pfgdv1 gene was about 1.65 kb,meeting the expectation of predicted fragment size. The recombinant protein was about 67 kDa,which could be recognized by His?Tag monoclonal antibody. Conclusion Conclusion The Pfgdv1 gene of P. falciparum is successfully cloned,and the recombinant Pfgdv1 pro? tein is expressed, thereby providing an opportunity for further study on transmission blocking vaccine.

Key words: Plasmodium falciparum, Pfgdv1, Gametocyte, Transmission blocking vaccine, Prokaryotic expression

中图分类号: