Cyclin-dependent kinase inhibitor 2A messenger RNA 3'-untranslated region (CDKN2A mRNA 3'-UTR)

The Cyclin-dependent kinase inhibitor 2A (CDKN2A) mRNA 3'-untranslated region (3'-UTR) is a critical regulatory segment of the messenger RNA that encodes the p16INK4a and p14ARF tumor suppressor proteins (UniProt P42771). This region contains multiple binding sites for microRNAs (miRNAs) and RNA-binding proteins (RBPs) that dictate the stability and translational efficiency of the transcript (Luo et al., 2013, PubMed: 23536453). In many cancers, alterations in the 3'-UTR, such as single nucleotide polymorphisms (SNPs) like rs11515, lead to the downregulation of p16INK4a, thereby promoting uncontrolled cell proliferation and bypass of senescence (Kumar et al., 2011, PubMed: 21835887). As a therapeutic target, the CDKN2A 3'-UTR is being explored for the development of antisense oligonucleotides (ASOs) and miRNA-based therapies designed to restore or enhance the expression of these vital cell cycle inhibitors. By blocking the binding of inhibitory miRNAs or stabilizing the mRNA structure, these interventions aim to reactivate the tumor suppressive pathways in malignant cells. However, challenges include the delivery of RNA-targeted agents and the potential for off-target effects within the complex regulatory landscape of the cell (Debniak et al., 2005, PubMed: 15643615).

Other names

p16INK4a 3'-UTRCDKN2A 3'-untranslated regionp16 3'-UTRp14ARF 3'-UTR

Modulation of mRNA stability and translation by blocking microRNA-mediated repression or enhancing RNA-binding protein interactions.