MiR-20b Down-Regulates Intestinal Ferroportin Expression In Vitro and In Vivo.

ABSTRACT: Ferroportin (FPN) is the only known cellular iron exporter in mammalian. However, post-transcriptional regulation of intestinal FPN has not yet been completely understood. In this study, bioinformatics algorithms (TargetScan, PicTar, PITA, and miRanda) were applied to predict, screen and obtain microRNA-17 family members (miR-17, miR-20a, miR-20b, and miR-106a) targeting FPN, 'seed sequence' and responding binding sites on the 3'untranslated region (3'UTR) region of FPN. Dual-luciferase reporter assays revealed miRNA-17 family members' mimics decreased the luciferase activity, whereas their inhibitors increased the luciferase activity. Compared with the FPN 3'UTR wild type reporter, co-transfection of a miRNA-17 family members' over-expression plasmids and FPN 3'UTR mutant reporters enhanc

SUBMITTER: Jiang S 

PROVIDER: S-EPMC6829237 | biostudies-literature | 2019 Sep

REPOSITORIES: biostudies-literature