生物技术通报 ›› 2016, Vol. 32 ›› Issue (5): 220-225.doi: 10.13560/j.cnki.biotech.bull.1985.2016.05.029

• 研究报告 • 上一篇    下一篇

马铃薯块茎特异性启动子驱动的人白细胞介素-12的遗传转化研究

杨加伟1, 程小玲2, 龙朝康1   

  1. 1.遵义医学院生物化学教研室,遵义 563000;
    2.遵义医学院细胞生物学教研室,遵义 563000
  • 收稿日期:2015-07-20 出版日期:2016-05-25 发布日期:2016-05-27
  • 作者简介:杨加伟,男,博士,副教授,研究方向:医药生物技术;E-mail:yangjw@zmc.edu.cn
  • 基金资助:
    贵州省科学技术基金项目(黔科合J字[2013]2324),遵义医学院博士启动基金项目(F-587)

Genetic Transformation of Human IL-12 Driven by Tuber-specific Promoter from Potato(Solanum tuberosum)

YANG Jia-wei1,CHENG Xiao-ling2,LONG Chao-kang1   

  1. 1. Department of Biochemistry,Zunyi Medical University,Zunyi 563000;
    2. Department of Cellular Biology,Zunyi Medical University,Zunyi 563000
  • Received:2015-07-20 Published:2016-05-25 Online:2016-05-27

摘要: 为获得高效表达人白细胞介素-12(hIL-12)蛋白的转基因马铃薯植株,利用根瘤农杆菌侵染法将前期构建的马铃薯块茎特异性启动子Ppatatin驱动的hIL-12植物表达载体导入马铃薯,通过共培养、筛选、分化等过程获得转基因植株,并结合PCR、RT-PCR、GUS染色及ELISA分析对转基因植株进行鉴定。结果显示,获得12个马铃薯转基因株系,PCR检测表明其中的10个株系目的基因已导入马铃薯基因组,转基因阳性率为83%;RT-PCR分析表明其中的7个株系外源基因在转录水平成功获得表达,ELISA分析表明其中的5个株系有明显的蛋白水平表达。对这7个株系后代的检测表明外源基因成功表达且具有良好的遗传稳定性。

关键词: Ppatatin启动子, 人白细胞介素-12, 转基因马铃薯, 植物生物反应器

Abstract: To obtain transgenic potato plants that express human interleukin 12(hIL-12)protein,the early-constructed plant expression vector driven by Ppatatin of potato tuber-specific promotor was transformed into potato by Agrobacterium-mediated transfection,followed by co-cultivation,screening and differentiation,and the transgenic plants were acquired. Techniques of PCR,RT-PCR,GUS staining,and ELISA analysis were performed for the identification of transgenic plants. The results showed that 12 transgenic lines were obtained,and in the 10 transgenic lines the target gene was in the potato genome,i.e.,positive rate was 83%. RT-PCR analysis illustrated that exogenous genes expressed successfully in 7 transgenic lines at mRNA level,moreover,ELISA data showed that 5 transgenic lines presented the high level of hIL-12 protein expression. In addition,the expression of hIL-12 was genetically stable in these 7 transgenic potato lines.

Key words: promoter Ppatatin, human IL-12, transgenic potato, plant bioreactor