Ribosomal protein S6 kinase beta-1 mRNA 3'-untranslated region (S6K1 mRNA 3'-UTR) (S6K1 mRNA 3'-UTR)

The Ribosomal protein S6 kinase beta-1 (S6K1) mRNA 3'-untranslated region (3'-UTR) is a critical regulatory segment of the RPS6KB1 transcript that governs protein expression through post-transcriptional mechanisms (UniProt P23443). S6K1 is a key serine/threonine kinase in the mTORC1 signaling pathway, responsible for promoting protein synthesis, cell growth, and cell cycle progression (PubMed 25961925). The 3'-UTR contains specific binding sites for several microRNAs, including miR-497, miR-128, and miR-145, which typically function as tumor suppressors by inhibiting S6K1 translation or promoting mRNA decay (PubMed 26464701, PubMed 23103957). In various malignancies, such as breast and colorectal cancer, the downregulation of these miRNAs leads to the pathological overexpression of S6K1, driving oncogenesis and resistance to therapy (PubMed 25961925). Therapeutic interventions targeting this region involve the use of miRNA mimics or antisense oligonucleotides (ASOs) to restore regulatory control and suppress S6K1-mediated signaling. These RNA-targeted approaches offer a way to modulate the mTOR pathway with high specificity, although challenges remain regarding systemic delivery and potential off-target effects.

Other names

RPS6KB1 3'-UTRp70S6K 3'-UTRp70S6K1 3'-UTRRibosomal protein S6 kinase 1 3'-UTRSTK14A 3'-UTRp70 ribosomal S6 kinase 1 mRNA 3'-untranslated region

Sequence-specific binding to the 3'-untranslated region to induce mRNA degradation via the RNA-induced silencing complex (RISC) or to sterically inhibit ribosomal translation of the S6K1 transcript.