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. 2015 Jul 2;10:4279–4291. doi: 10.2147/IJN.S85095

Figure 11.

Figure 11

Detection of VEGF expression.

Notes: (A) Suppression of VEGF mRNA levels determined by quantitative real-time PCR. (B) The secretion of VEGF protein in culture media tested by human VEGF ELISA kit; both of the experiments were executed at 72 hours after transfection with Fe3O4@SiO2/PEI (NPs/PEI), Fe3O4@SiO2/PEI/Sc shRNA (NPs/PEI/Sc shRNA), or Fe3O4@SiO2/PEI/VEGF shRNA (NPs/PEI/VEGF shRNA). All the NP concentrations are 60 μg/mL. For the NPs/PEI/Sc shRNA and NPs/PEI/VEGF shRNA, the weight ratio of NPs/PEI to Sc shRNA or VEGF shRNA is 40:1. *P<0.05 compared with NPs/PEI or NPs/PEI/Sc shRNA.

Abbreviations: mRNA, messenger RNA; NPs, nanoparticles; PEI, polyethylenimine; Sc, scrambled; shRNA, small hairpin RNA; PCR, polymerase chain reaction; ELISA, enzyme-linked immunosorbent assay.