ArticleNature communications2025
Loss-of-function mutations in the dystonia gene THAP1 impair proteasome function by inhibiting PSMB5 expression.
Article in Nature communications, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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Who cites it
5 citing papers in PubMed.
- Coordinated control of proteasome subunit gene expression promotes stress resistance, proteostasis, and longevity.GeroScience · 2026Article
- Arsenic Inhibits the PA28α/β-PSMB5 Pathway Blocking Phosphorylated TFEB Degradation and Causing Lysosomal Dysfunction that Damages the Liver.Biological trace element research · 2026Article
- EphB4 inhibition defines a druggable synthetic-lethal vulnerability in MYC-driven triple-negative breast cancer.Cell death & disease · 2026Article
- Article
- Dystonia: Insights into Mechanisms and Novel Therapeutics.Current neurology and neuroscience reports · 2026Review
Corrections and comments
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Authors and funding
3 authors.
Funding
Abstract
The 26S proteasome is a multi-catalytic protease that serves as the endpoint for protein degradation via the ubiquitin-proteasome system. Proteasome function requires the concerted activity of 33 distinct gene products, but how the expression of proteasome subunits is regulated in mammalian cells remains poorly understood. Leveraging coessentiality data from the DepMap project, here we characterize an essential role for the dystonia gene THAP1 in maintaining the basal expression of PSMB5. PSMB5 insufficiency resulting from loss of THAP1 leads to defects in proteasome assembly, impaired proteostasis and cell death. Exploiting the fact that the toxicity associated with loss of THAP1 can be rescued upon exogenous expression of PSMB5, we define the transcriptional targets of THAP1 through RNA-seq analysis and perform a deep mutational scan to systematically assess the function of thousands of single amino acid THAP1 variants. Altogether, these data identify THAP1 as a critical regulator of proteasome function and suggest that aberrant proteostasis may contribute to the pathogenesis of THAP1 dystonia.
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Registered trials
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