Ubiquitin-specific peptidase 14 (USP14) mRNA (USP14 mRNA)

Ubiquitin-specific peptidase 14 (USP14) mRNA is the genetic template for the USP14 protein, a major deubiquitinating enzyme (DUB) that reversibly associates with the 19S regulatory particle of the 26S proteasome (UniProt: P54578). USP14 plays a critical role in protein quality control by removing ubiquitin chains from substrates before they are translocated into the proteasome's catalytic core, which can effectively inhibit or delay the degradation of these proteins (PubMed: 20829788). In neurodegenerative conditions such as Alzheimer's disease and Amyotrophic Lateral Sclerosis (ALS), USP14 activity is often viewed as a therapeutic bottleneck; reducing its expression via mRNA-targeting strategies like siRNA or antisense oligonucleotides (ASOs) can accelerate the clearance of pathogenic protein aggregates, including tau and TDP-43 (PubMed: 30305540). Conversely, in various cancers, USP14 is frequently overexpressed and acts to stabilize oncogenic factors, making its mRNA a target for knockdown to induce tumor cell apoptosis and sensitize cells to chemotherapy (PubMed: 29107110). While small molecule inhibitors like IU1 target the USP14 protein's active site, targeting the mRNA provides a method to deplete the total cellular pool of the enzyme, potentially offering more sustained modulation of the ubiquitin-proteasome system (PubMed: 26337004).

Other names

USP14 transcriptTGT mRNADeubiquitinating enzyme 14 mRNAUbiquitin carboxyl-terminal hydrolase 14 mRNA

Targeted degradation of USP14 mRNA via RNA interference (RNAi) or RNase H-mediated cleavage, resulting in reduced levels of the USP14 deubiquitinating enzyme and subsequent enhancement of proteasomal degradation of specific substrates.