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利用siRNA抑制食管癌VEGF-C的表达

张红新, 郑湘予, 陈奎生, 张 岚, 高冬玲, 张云汉

张红新, 郑湘予, 陈奎生, 张 岚, 高冬玲, 张云汉. 利用siRNA抑制食管癌VEGF-C的表达[J]. 肿瘤防治研究, 2010, 37(02): 132-135. DOI: 10.3971/j.issn.1000-8578.2010.02.003
引用本文: 张红新, 郑湘予, 陈奎生, 张 岚, 高冬玲, 张云汉. 利用siRNA抑制食管癌VEGF-C的表达[J]. 肿瘤防治研究, 2010, 37(02): 132-135. DOI: 10.3971/j.issn.1000-8578.2010.02.003
ZHANG Hong-xin, ZHENG Xiang-yu, CHEN Kui-sheng, ZHANG Lan, GAO Dong-ling, ZHANG Yun-han. Inhibition of VEGF-C Expression in Esophageal Carcinoma by siRNA[J]. Cancer Research on Prevention and Treatment, 2010, 37(02): 132-135. DOI: 10.3971/j.issn.1000-8578.2010.02.003
Citation: ZHANG Hong-xin, ZHENG Xiang-yu, CHEN Kui-sheng, ZHANG Lan, GAO Dong-ling, ZHANG Yun-han. Inhibition of VEGF-C Expression in Esophageal Carcinoma by siRNA[J]. Cancer Research on Prevention and Treatment, 2010, 37(02): 132-135. DOI: 10.3971/j.issn.1000-8578.2010.02.003

利用siRNA抑制食管癌VEGF-C的表达

详细信息
    通讯作者:

    张云汉

  • 中图分类号: R735.1

Inhibition of VEGF-C Expression in Esophageal Carcinoma by siRNA

More Information
    Corresponding author:

    ZHANG Yun-han

  • 摘要: 目的 利用siRNA抑制人食管癌EC9706细胞中VEGF-C基因的表达。方法 针对VEGF-C mRNA设计了3条siRNA,并构建相应的表达质粒,将质粒转染食管癌EC9706细胞,筛选稳定表达株,利用RT-PCR和原位杂交技术分析siRNA对细胞中VEGF-C mRNA的降解作用;免疫组织化学法分析细胞中VEGF-C蛋白的表达;利用裸鼠进行体内成瘤性实验,免疫组织化学法检测瘤组织中VEGF-C的表达。结果 siRNA能明显降低食管癌EC9706细胞中VEGF-C mRNA和蛋白的表达,稳定转染的3个siRNA组细胞仅有少量VEGF-C阳性表达颗粒和无阳性条带,与无关序列组和正常EC9706细胞组相比,差异均有统计学意义(P<0.01);裸鼠体内的成瘤实验,3个siRNA转染组瘤组织中VEGF-C蛋白的表达也明显减少,与正常EC9706组无关序列组相比,差异均有统计学意义(P<0.01)。结论 靶向VEGF-C mRNA的siRNA能在体内外有效抑制VEGF-C的表达,可用于食管癌的基因治疗。

     

    Abstract: Objective To inhibit the expression of VEGF-C gene in human esophageal carcinoma cells EC9706 by siRNA. Methods Three siRNAs targeting VEGF-C were designed. Corresponding expression vectors were constructed and transformed into EC9706 cells. After selection, the stable transfected cells were obtained. VEGF-C mRNA in the stable transfected cells was analyzed by RT-PCR and in situ hybridization. Expression of VEGF-C protein in these cells was analyzed by immunohistochemistry (IHC) method. Stable transfected cells were transplanted into nude mice later. Expression of VEGF-C protein was detected with IHC method in transplanted tumor. Results SiRNA-VEGF-C can decrease the expression of VEGF-C mRNA and protein in EC9706 cells effectively. There were lots of positive granules and positive bands in untransfected EC9706 cells and in the transfection group cells with transfected not-matching any known human coding siRNA. There were few positive granules and week positive bands in transfection group cells with transfected by VEGF-C-targeted siRNA. There were significant differences between transfected and untransfected groups (P<0.01). All the three siRNAs targeting VEGF-C could be the tumorgenesis of EC9706 cells in nude mice. Correspondingly, expressions of VEGF-C protein in xenografts tumors were also reduced. There were significant differences between them (P<0.01). Conclusion siRNAs targeting VEGF-C can inhibit VEGF-C expression effectively in vivo and in vitro. These maybe contribute to the gene therapy of cancer treatment in human esophageal carcinoma.

     

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出版历程
  • 收稿日期:  2008-09-07
  • 修回日期:  2008-12-03
  • 刊出日期:  2010-03-24

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