Cyclin E1 messenger RNA 3'-untranslated region (CCNE1 mRNA 3'-UTR) (CCNE1 mRNA 3'-UTR)

The CCNE1 mRNA 3'-untranslated region (3'-UTR) is a critical regulatory segment of the messenger RNA encoding Cyclin E1, a protein essential for the transition of cells from the G1 to the S phase of the cell cycle (PMID: 32814878). This region contains numerous binding sites for microRNAs and RNA-binding proteins that dictate the stability and translational efficiency of the CCNE1 transcript (PMID: 21602804). In many cancers, particularly high-grade serous ovarian cancer and certain breast cancers, CCNE1 is frequently amplified or overexpressed, driving uncontrolled cell proliferation and genomic instability (PMID: 25103340). Targeting the 3'-UTR offers a therapeutic strategy to downregulate Cyclin E1 levels by inducing mRNA degradation or blocking translation. Current drug development efforts focus on antisense oligonucleotides and emerging small molecules that can specifically bind to the complex secondary structures within the 3'-UTR (PMID: 33536614). By reducing Cyclin E1 expression, these agents aim to restore cell cycle control and induce apoptosis in CCNE1-dependent tumor cells. This approach is particularly relevant for tumors that have developed resistance to standard DNA-damaging agents or PARP inhibitors. Unlike the Cyclin E1 protein, which lacks a traditional small-molecule binding pocket, the 3'-UTR presents unique structural motifs that can be targeted with high specificity.

Other names

CCNE1 3'-UTRCyclin E1 3'-untranslated regionCCNE1 3-prime untranslated region

Therapeutic agents targeting the CCNE1 mRNA 3'-UTR function by binding to specific sequence motifs or secondary structures to induce RNase H-mediated degradation, block the binding of stabilizing RNA-binding proteins, or sterically inhibit the translational machinery, ultimately reducing Cyclin E1 protein expression (PMID: 33536614).