USP4 Targets TAK1 to Downregulate TNFα-induced NF-κB Activation
Overview
Affiliations
Lys63-linked polyubiquitination of transforming growth factor-β-activated kinase 1 (TAK1) has an important role in tumor necrosis factor-α (TNFα)-induced NF-κB activation. Using a functional genomic approach, we have identified ubiquitin-specific peptidase 4 (USP4) as a deubiquitinase for TAK1. USP4 deubiquitinates TAK1 in vitro and in vivo. TNFα induces association of USP4 with TAK1 to deubiquitinate TAK1 and downregulate TAK1-mediated NF-κB activation. Overexpression of USP4 wild type, but not deuibiquitinase-deficient C311A mutant, inhibits both TNFα- and TAK1/TAB1 co-overexpression-induced TAK1 polyubiquitination and NF-κB activation. Notably, knockdown of USP4 in HeLa cells enhances TNFα-induced TAK1 polyubiquitination, IκB kinase phosphorylation, IκBα phosphorylation and ubiquitination, as well as NF-κB-dependent gene expression. Moreover, USP4 negatively regulates IL-1β-, LPS- and TGFβ-induced NF-κB activation. Together, our results demonstrate that USP4 serves as a critical control to downregulate TNFα-induced NF-κB activation through deubiquitinating TAK1.
Ubiquitin-Specific Protease Inhibitors for Cancer Therapy: Recent Advances and Future Prospects.
Bakkar M, Khalil S, Bhayekar K, Kushwaha N, Samarbakhsh A, Dorandish S Biomolecules. 2025; 15(2).
PMID: 40001543 PMC: 11853158. DOI: 10.3390/biom15020240.
Deubiquitinases as novel therapeutic targets for diseases.
Xian Y, Ye J, Tang Y, Zhang N, Peng C, Huang W MedComm (2020). 2024; 5(12):e70036.
PMID: 39678489 PMC: 11645450. DOI: 10.1002/mco2.70036.
PBLD enhances antiviral innate immunity by promoting the p53-USP4-MAVS signaling axis.
Chu F, Hou P, Zhu H, Gao Y, Wang X, He W Proc Natl Acad Sci U S A. 2024; 121(49):e2401174121.
PMID: 39589880 PMC: 11626120. DOI: 10.1073/pnas.2401174121.
Shen K, Zhang Q Ann Transl Med. 2024; 12(5):90.
PMID: 39507445 PMC: 11534757. DOI: 10.21037/atm-24-32.
Liu B, Zhang X, Zhou Y, Liu H, Wang Z, Fu Y Leukemia. 2024; 38(11):2466-2478.
PMID: 39266638 DOI: 10.1038/s41375-024-02338-z.