重组GFP-VEGF6a融合肽的构建表达及其抗肿瘤活性

JOURNAL OF CHINA PHARMACEUTICAL UNIVERSITY(2011)

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Abstract
为了探讨血管内皮生长因子6a(VEGF6a)的抗肿瘤及其抑制外周血管生成活性,采用两次加端PCR技术,将VEGF6a片段的基因和绿色荧光蛋白(GFP)基因通过GGGS柔性片段融合,连接至pET28a载体,构建GFP-VEGF6a(GFP6a)融合肽E.coli表达菌.GFP6a融合肽通过乳糖诱导表达和肝素亲和树脂精制得到.建立皮内和皮下移植型肝癌ICR小鼠模型,验证了VEGF6a抑制肿瘤外周血管及抗肿瘤活性.结果表明,与阴性对照GFP比较,GFp6a 200 mg/kg组和20 mg/kg组均明显抑制肿瘤外周血管生成,抑制H22肝癌细胞体内生长,瘤重抑制率分别为70.9%和56.1%(P<0.01).本研究显示,VEGF6a具有潜在的抗肿瘤活性.
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gfp-vegf
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