MicroRNA-375-complementary mRNA seed sites (miR-375 MREs)

MicroRNA-375-complementary mRNA seed sites are specific nucleotide sequences located within the 3' untranslated regions (UTRs) or coding sequences (CDS) of messenger RNAs that are recognized by the seed region of microRNA-375 (miR-375). miR-375 is a highly conserved microRNA predominantly expressed in the pancreatic islets and neuroendocrine cells, where it plays a critical role in glucose homeostasis, insulin secretion, and cellular differentiation. These seed sites serve as the primary interface for miR-375-mediated post-transcriptional gene silencing, leading to either mRNA degradation or translational repression of target genes such as YAP1, SP1, and CIP2A. In the context of drug development, these sites are utilized in two main ways: as targets for "target protectors" (synthetic oligonucleotides that block miRNA binding to restore gene expression) and as regulatory "de-targeting" elements engineered into mRNA-based therapeutics to prevent off-target expression in miR-375-rich tissues like the pancreas. Dysregulation of the interaction between miR-375 and its complementary seed sites is implicated in various pathologies, including type 2 diabetes and multiple cancers where miR-375 often acts as a tumor suppressor.

Other names

miR-375 binding sitesmiR-375 response elementsmiR-375 target sitesmiR-375 seed matchesmiR-375-complementary sequences

miRNA-mediated gene silencing via the RNA-induced silencing complex (RISC); competitive inhibition of miRNA binding by target protectors.