• Department of Cardiology, Zhuhai People's Hospital, Zhuhai, Guangdong 519000, P. R. China;
YeFen, Email: ye2260@163.com
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Objective To construct a lentiviral vector-mediated gene-targeted small interfering RNA (siRNA) vector to vascular endothelial growth factor (VEGF), and choose the RNAi with the highest silence efficiency to VEGFA gene. Methods Three kinds of VEGFA gene-targeted hairpin siRNA was designed (KD1, KD2, KD3), then two complementary oligo nucleotide strand were synthesized and inserted into pGCSIL-GFP vector. After annealing, the recombined vector pGCSIL-GFP-siVEGFA was gotten, which was digested by restrictive enzyme and sequenced, and was co-transfected with the pHelper 1.0 and pHelper 2.0 into 293T cells by Lipofectamine 2000. After that, the new vector was transfected into human umbilical vein endothelial cells (HUVECs), and the mRNA expression level of VEGFA gene in cells was detected by RT-PCR. Then we compared the mRNA expression level of VEGFA gene of the 3 groups. Results pGCSIL-GFP-siVEGFA was built successfully, and all the siRNA could silence the expression of VEGFA mRNA in the HUVECs, and the relative expressions of VEGFA mRNA to the control group were 0.614±0.043 (KD1), 0.334±0.030 (KD2), and 0.201±0.015 (KD3) respectively. Conclusion We've successfully constructed the siRNA vector for VEGFA mRNA, which can obviously suppress the expression of VEGFA mRNA.

Citation: JiangXiaofei, YeFen, ShiLi, ChenXi, ZhuWeimin, ZhangYeming. Construction and Identification of Lentiviral Vector-mediated Small Interfering RNA Targeting Human Vascular Endothelial Growth Factor A Gene. West China Medical Journal, 2016, 31(1): 1-6. doi: 10.7507/1002-0179.20160001 Copy

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