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1. 重庆医科大学附属第一医院肿瘤科,重庆,400016
2. 重庆市第三人民医院老年病科,重庆,400014
纸质出版日期:2013,
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李 旭, 徐亚丽, 李 英, 等. 干扰 Krüppel 样因子 8表达对肝癌 SMMC7721细胞中血管生成相关因子的调控作用[J]. 重庆医科大学学报, 2013,36(5):483-487.
LI Xu, XU Yali, LI Ying, et al. Regulation of altered Krüppel-like factor 8 expressions on angiogensis ralated factors of hepatocelluar carcinoma SMMC7721[J]. Journal of Chongqing Medical University, 2013,36(5):483-487.
李 旭, 徐亚丽, 李 英, 等. 干扰 Krüppel 样因子 8表达对肝癌 SMMC7721细胞中血管生成相关因子的调控作用[J]. 重庆医科大学学报, 2013,36(5):483-487. DOI:
LI Xu, XU Yali, LI Ying, et al. Regulation of altered Krüppel-like factor 8 expressions on angiogensis ralated factors of hepatocelluar carcinoma SMMC7721[J]. Journal of Chongqing Medical University, 2013,36(5):483-487. DOI:
目的:构建Krüppel样因子8(Krüppel-like factor 8,KLF8)的真核表达质粒及干扰质粒,考查KLF8对人肝癌SMMC7721 细胞中血管生成相关因子的调控作用。方法:构建KLF8的真核表达质粒pcDNA3.1-KLF8,测序确认。构建靶向不同KLF8干扰位点的干扰质粒pGPU6/GFP/Neo-KLF8,筛选出干扰效率最高的pGPU6/GFP/Neo-KLF8。将pcDNA3.1-KLF8、相应的对照质粒 pcDNA3.1,pGPU6/GFP/Neo-KLF8、相应的对照质粒pGPU6/GFP/Neo-ShNC 分别转染人肝癌SMMC7721细胞,共4组。实时荧光定量PCR及Western blot检测KLF8的表达,qPCR检测各组细胞中低氧诱导因子(hypoxia-inducible factor,HIF)1-α、血管内皮生长因子(vascular endothelial growth factor,VEGF)、血管生成素(angiopoietin,Ang)1、Ang2、血管生成素受体Tie2及基质金属蛋白酶(matrix metallo-proteinase,MMP)2的mRNA表达。结果:pcDNA3.1-KLF8显著上调KLF8表达(相对表达量为68.8±6.5),pGPU6/GFP/Neo-KLF8下调KLF8的表达(相对表达量 0.31±0.01)。转染pcDNA3.1-KLF8组与其对照组相比,VEGF、Ang2、HIF1-α及MMP2 mRNA表达增加(P<0.05),血管生成素受体Tie2、Ang1的mRNA表达无差异(P >0.05);转染pGPU6/GFP/Neo-KLF8组与其对照组相比,Ang2和HIF1-α表达降低(P<0.05),VEGF、血管生成素受体Tie2、Ang1及MMP2的表达无差异(P >0.05)。结论:在肝癌中,KLF8可能通过调控VEGF、Ang2、HIF1-α及MMP2来调控血管生成。
Objective:To construct Krüppel-like factor 8(KLF8)expression plasmid pcDNA3.1-KLF8 and KLF8 interference plasmid pGPU6/GFP/Neo-KLF8 and to investigate role of KLF8 in regulating angiogenesis related factors in SMMC7721. Methods:KLF8 ex-pression plasmid pcDNA3.1-KLF8 and KLF8 interference plasmid pGPU6/GFP/Neo-KLF8 targeting four interference sites were con-structed and then were screened for the most effective one. Real-time quantitative PCR and Western blot were used to confirm the effects on regulating KLF8 levels. pcDNA3.1-KLF8,pcDNA3.1,pGPU6/GFP/Neo-KLF8 and pGPU6/GFP/Neo-ShNC plasmid were transfected into human SMMC7721 cells separately. mRNA levels of hypoxia-inducible factor(HIF)1-α,vascular endothelial growth factor(VEGF),angiopoietin 1(Ang1),angiopoietin 2(Ang2),angiopoietin receptor Tie2,matrix metallo-proteinase(MMP)2 were investigated by qPCR. Results:Sequencing showed that KLF8 eukaryotic expression plasmids pcDNA3.1-KLF8 was successfully constructed and pcDNA3.1-KLF8 significantly up-regulated KLF8 expressions(relative expression:68.8±6.5). The most efficient KLF8 interference plasmids pGPU6/GFP/Neo-KLF8 was obtained and pGPU6/GFP/Neo-KLF8 down-regulated KLF8 expressions(relative expression:0.31±0.01). Compared with those in control group,mRNA levels of VEGF,Ang2,HIF1-α and MMP2 were in-creased(P<0.05) while angiopoietin receptor Tie2 and Ang1 had no significant changes(P >0.05)in experiment group(transfected with pcDNA3.1-KLF8). Meanwhile,compared with those in control group(transfected with pGPU6/GFP/Neo-ShNC),mRNA levels of Ang2 and HIF1-α were decreased(P<0.05)while VEGF,angiopoietin receptor Tie2,MMP2 and Ang1 displayed no significant changes(P >0.05) in experiment group(transfected with pGPU6/GFP/Neo-KLF8). Conclusion:KLF8 may regulate angiogenesis in SMMC7721 by regulating several angiogenesis related factors such as VEGF,Ang2,HIF1-α and MMP2.
肝细胞癌Krüppel 样因子 8血管生成相关因子
hepatocelluar carcinomaKrüppel-like factor 8an-giogenesis related factor
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