Human antigen R mRNA 3'-untranslated region (HuR mRNA 3'-UTR)

The Human antigen R (HuR) mRNA 3'-untranslated region (3'-UTR) is a critical regulatory segment of the ELAVL1 transcript that governs the stability and translation of the HuR protein. HuR is a ubiquitously expressed RNA-binding protein that stabilizes various mRNAs encoding pro-survival, pro-proliferative, and pro-angiogenic factors by binding to AU-rich elements (AREs). Interestingly, the HuR mRNA 3'-UTR itself contains multiple AREs, allowing the HuR protein to bind to its own transcript in a positive feedback loop that enhances its own expression (Dai et al., 2005). In many cancers, this regulatory mechanism is hijacked, leading to HuR overexpression and the subsequent stabilization of oncogenic mRNAs (Wang et al., 2013). Therapeutic strategies targeting this region include antisense oligonucleotides (ASOs) and siRNAs designed to induce mRNA degradation or block the binding of stabilizing proteins and microRNAs like miR-519 (Abdelmohsen et al., 2008). Disrupting the HuR mRNA 3'-UTR interaction network represents a promising approach to downregulate HuR levels and suppress the expression of multiple downstream oncogenic drivers simultaneously, though systemic toxicity remains a significant concern due to HuR's essential role in normal cellular homeostasis and immune regulation (Srikantan & Gorospe, 2012).

Other names

ELAVL1 mRNA 3'-UTR3'-UTR of ELAVL1HuR 3'-UTRELAVL1 3'-untranslated region

Antisense-mediated mRNA degradation or translational repression by targeting the 3'-untranslated region to disrupt the HuR autoregulatory loop and reduce protein expression.