生物技术通报 ›› 2014, Vol. 0 ›› Issue (9): 84-88.

• 研究报告 • 上一篇    下一篇

薄荷GPPS基因原核表达及RNA干扰载体构建

于盱,梁呈元,刘艳,李维林   

  1. 江苏省中国科学院植物研究所,南京 210014
  • 收稿日期:2014-03-18 出版日期:2014-09-15 发布日期:2014-09-07
  • 作者简介:于盱,女,博士研究生,研究方向:药用植物资源和育种;E-mail:yuxu84@163.com
  • 基金资助:
    江苏省自然科学基金项目(BK2010475),江苏省农业科技自主创新资金项目[CX(11)1021]

Prokaryotic Expreesion and RNA Interference Vector Construction for Geranyl Diphosphate Synthase of Mentha haplocalyx Briq.

Yu Xu,Liang Chengyuan, Liu Yan, Li Weilin   

  1. Institute of Botany,Jiangsu Province and the Chinese Academy of Sciences,Nanjing 210014
  • Received:2014-03-18 Published:2014-09-15 Online:2014-09-07

摘要: 利用薄荷挥发油合成途径关键酶之一的薄荷牻牛儿基焦磷酸合酶(GPPS)基因特异引物,扩增得到GPPS基因开放式阅读框(1131bp),并将其插入到原核表达载体pET-28a中,经酶切测序验证的重组质粒pET-28a-GPPS转入Rosetta(DE3),利用IPTG诱导表达融合蛋白。结果显示,终浓度为1mmol/L的IPTG进行诱导后6h,SDS-PAGE显示薄荷GPPS基因在Rosetta(DE3)中获得高效表达。目前利用RNA干扰技术研究基因功能的方法已日趋成熟,以GPPS大亚基基因为靶目标,成功构建了薄荷GPPS大亚基基因的pBI121-RNAi-GPPS干扰载体。

关键词: 薄荷, GPPS, 原核表达, RNAi, 载体构建

Abstract: Geranyl diphosphate synthase(GPPS)gene total ORF(1 131 bp)was amplified with specific primers and linked to expression vector pET-28a. Verified by double restriction enzyme digestion and sequencing, recombined vector pET-28a-GPPS was transferred to Rosetta(DE3)and the recombined protein was overexpressed after 6 h induced by 1 mmol/L IPTG. Using RNA interference method to research gene function is matured gradually. In our research, the expression vector pBI121-RNAi-GPPS targeting to GPPS gene was structured successfully.

Key words: Mentha haplocalyx Briq, GPPS , Prokaryotic expreesion , RNAi , Vector construction