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- W2226890441 abstract "Objective To explore whether miR-29a can influence the phenotypic transformation of vascular smooth muscle cells (VSMCs) by inhibiting expression of Kruppel-like factor 4 (KLF4). Methods Rat VSMCs were cultured primarily. The luciferase reporter system was used to verify whether KLF4 is the target gene of miR-29a. VSMCs were divided into miR-29atransfected expression plasmid group, transfection-negative expression plasmid group, and no-transfection group. The expression of KLF4 and VSMC contractile phenotype protein levels were determined by Western blotting. The proliferation of VSMCs was analyzed by 3H thymidine-incorporation assay. Results The luciferase activity was significantly decreased in wild-type KLF4 luciferase report gene and miR-29a expression plasmid co-transfection group. The KLF4 protein expression level (0.36±0.02) was significantly lower in miR-29a-transfected expression plasmid group than that in untransfected and transfection-negative expression plasmid group (1.52±0.06, 1.55±0.05, respectively, P<0.01). Meanwhile, compared with untransfected and transfection-negative expression plasmid groups, the contractile phenotype associated protein SM-MHC, SM-22α, calponin expression levels were increased, while the proliferation capability was decreased in miR-29a-transfected expression plasmid group. Conclusion MiR-29a targets KLF4 and inhibits its expression, thus maintains contractile phenotype of VSMCs, and reduces the cell proliferation ability.DOI: 10.11855/j.issn.0577-7402.2014.10.05" @default.
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- W2226890441 date "2014-10-01" @default.
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- W2226890441 title "Effects of inhibition of KLF4 expression by miR-29a on transformation of phenotype of vascular smooth muscle cells" @default.
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