ArticleActa biochimica et biophysica Sinica2025
Targeting USP2 induces degradation of PML-RARα with or without drug-resistant mutations in acute promyelocytic leukemia.
Article in Acta biochimica et biophysica Sinica, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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1 citing paper in PubMed.
- Metabolic inflexibility across heart failure phenotypes: mechanisms and type-specific therapeutic implications.Apoptosis : an international journal on programmed cell death · 2026Review
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15 authors.
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Abstract
Despite the high efficacy of all-trans retinoic acid (ATRA) and arsenic trioxide (ATO) in treating acute promyelocytic leukemia (APL), approximately 10-20% of patients develop drug resistance due to mutations in PML-RARα and other factors. Here, we find that inhibition of USP2 with ML364 or USP2 silencing reduces PML-RARα protein levels in both ATRA-sensitive and ATRA-resistant APL cells, and this effect is reversed by proteasome inhibition. Conversely, USP2 overexpression enhances PML-RARα stability. Mechanistically, USP2 interacts with and deubiquitinates PML-RARα, including its drug-resistant mutants. Consistent with PML-RARα degradation, ML364 treatment significantly induces apoptosis in APL cell lines and primary leukemia cells. In conclusion, this study identifies USP2 as a novel deubiquitinating enzyme for PML-RARα and highlights USP2 inhibition as a potential therapeutic strategy for APL with PML-RARα mutations.
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