ArticleProceedings of the National Academy of Sciences of the United States of America2013
Staufen2 functions in Staufen1-mediated mRNA decay by binding to itself and its paralog and promoting UPF1 helicase but not ATPase activity.
Article in Proceedings of the National Academy of Sciences of the United States of America, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 58 papers.
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58 citing papers in PubMed, 87 citations in OpenAlex.
- Fine-Tuned Regulation of mRNA Translation and Transport by STAU2 Condensate Facilitates Neuronal Development and Plasticity.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2026Article
- Toward unraveling molecular grammars for dsRNA-binding proteins: substrate recognition to binding mechanisms.BMB reports · 2025Review
- The role of secondary structures in the functioning of 3' untranslated regions of mRNA: A review of functions of 3' UTRs' secondary structures and hypothetical involvement of secondary structures in cytoplasmic polyadenylation in Drosophila.BioEssays : news and reviews in molecular, cellular and developmental biology · 2024Review
- Staufen1 Represses the FOXA1-Regulated Transcriptome by Destabilizing FOXA1 mRNA in Colorectal Cancer Cells.Molecular and cellular biology · 2024Article
- Translation-coupled mRNA quality control mechanisms.The EMBO journal · 2023Review
- The nexus between RNA-binding proteins and their effectors.Nature reviews. Genetics · 2023Review
- Integrative omics indicate FMRP sequesters mRNA from translation and deadenylation in human neuronal cells.Molecular cell · 2022Article
- AKT constitutes a signal-promoted alternative exon-junction complex that regulates nonsense-mediated mRNA decay.Molecular cell · 2022Article
- Phosphomimicry on STAU1 Serine 20 Impairs STAU1 Posttranscriptional Functions and Induces Apoptosis in Human Transformed Cells.International journal of molecular sciences · 2022Article
- Emerging Roles of RNA-Binding Proteins in Neurodevelopment.Journal of developmental biology · 2022Review
- High Level of Staufen1 Expression Confers Longer Recurrence Free Survival to Non-Small Cell Lung Cancer Patients by Promoting THBS1 mRNA Degradation.International journal of molecular sciences · 2021Article
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- STAU2 protein level is controlled by caspases and the CHK1 pathway and regulates cell cycle progression in the non-transformed hTERT-RPE1 cells.BMC molecular and cell biology · 2021Article
- IGF2BP2 stabilized FBXL19-AS1 regulates the blood-tumour barrier permeability by negatively regulating ZNF765 by STAU1-mediated mRNA decay.RNA biology · 2020Article
- The PABPC5/HCG15/ZNF331 Feedback Loop Regulates Vasculogenic Mimicry of Glioma via STAU1-Mediated mRNA Decay.Molecular therapy oncolytics · 2020Article
- lncRNA LINC00665 Stabilized by TAF15 Impeded the Malignant Biological Behaviors of Glioma Cells via STAU1-Mediated mRNA Degradation.Molecular therapy. Nucleic acids · 2020Article
- Role of ANKHD1/LINC00346/ZNF655 Feedback Loop in Regulating the Glioma Angiogenesis via Staufen1-Mediated mRNA Decay.Molecular therapy. Nucleic acids · 2020Article
- Short interspersed nuclear element (SINE)-mediated post-transcriptional effects on human and mouse gene expression: SINE-UP for active duty.Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2020Review
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3 authors at 1 institution in 1 country.
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Abstract
Staufen (STAU)1-mediated mRNA decay (SMD) is a posttranscriptional regulatory mechanism in mammals that degrades mRNAs harboring a STAU1-binding site (SBS) in their 3'-untranslated regions (3' UTRs). We show that SMD involves not only STAU1 but also its paralog STAU2. STAU2, like STAU1, is a double-stranded RNA-binding protein that interacts directly with the ATP-dependent RNA helicase up-frameshift 1 (UPF1) to reduce the half-life of SMD targets that form an SBS by either intramolecular or intermolecular base-pairing. Compared with STAU1, STAU2 binds ~10-fold more UPF1 and ~two- to fivefold more of those SBS-containing mRNAs that were tested, and it comparably promotes UPF1 helicase activity, which is critical for SMD. STAU1- or STAU2-mediated augmentation of UPF1 helicase activity is not accompanied by enhanced ATP hydrolysis but does depend on ATP binding and a basal level of UPF1 ATPase activity. Studies of STAU2 demonstrate it changes the conformation of RNA-bound UPF1. These findings, and evidence for STAU1-STAU1, STAU2-STAU2, and STAU1-STAU2 formation in vitro and in cells, are consistent with results from tethering assays: the decrease in mRNA abundance brought about by tethering siRNA-resistant STAU2 or STAU1 to an mRNA 3' UTR is inhibited by downregulating the abundance of cellular STAU2, STAU1, or UPF1. It follows that the efficiency of SMD in different cell types reflects the cumulative abundance of STAU1 and STAU2. We propose that STAU paralogs contribute to SMD by "greasing the wheels" of RNA-bound UPF1 so as to enhance its unwinding capacity per molecule of ATP hydrolyzed.
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