Fig. 5. HMGA1P6 regulates HMGA1/2 as a competing endogenous RNA.
a Bioinformatics analysis of potential miRNAs that target HMGA1P6, HMGA1 and HMGA2 3′UTR was conducted. b, c HMGA1P6, HMGA1 and HMGA2 expression were measured by qPCR after transfection of miRNA mimics or inhibitors. d–f Luciferase activity was tested after co-transfection of reporter plasmid containing HMGA1/2 3′UTR, HMGA1P6 wild type or mutant transcript and miRNA mimics. g Relative expression of HMGA1P6 and HMGA1/2 was measured in HEY cells after transfection of HMGA1/2 siRNAs. h Relative enrichment fold change of HMGA1P6 was analyzed in Ago2-RIPs compared to control IgG-RIPs. i Ago2 in biotinylated HMGA1P6 pulldown lysates in HEY cells was tested by western blot. j Matrigel invasion assay was performed in HEY cells transfected with different vectors for rescue experiment. Data are presented as means ± S.D. *p < 0.05, **p < 0.01.