ArticleBioorganic & medicinal chemistry letters2023
Discovery of a non-covalent ligand for Rpn-13, a therapeutic target for hematological cancers.
Article in Bioorganic & medicinal chemistry letters, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
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Who cites it
3 citing papers in PubMed, 9 citations in OpenAlex.
- Two Mechanisms One Molecule: Developing a 'Truly' Bifunctional Degrader Targeting Rpn13 and CRBN.Journal of the American Chemical Society · 2026Article
- SCaN: A Screening and Characterization Platform for Nanosuspensions Enables In Vivo Delivery of a Crystalline hRpn13ACS pharmacology & translational science · 2026Article
- NMR-Guided Studies to Establish the Binding Interaction between a Peptoid and Protein.Journal of the American Chemical Society · 2025Article
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Authors and funding
7 authors at 2 institutions in 1 country.
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Abstract
The ubiquitin-proteasome system serves as the major proteolytic degradation pathway in eukaryotic cells. Many inhibitors that covalently bind to the proteasome's active sites have been developed for hematological cancers, but resistance can arise in patients. To overcome limitations of active-site proteasome inhibitors, we and others have focused on developing ligands that target subunits on the 19S regulatory particle (19S RP). One such 19S RP subunit, Rpn-13, is a ubiquitin receptor required for hematological cancers to rapidly degrade proteins to avoid apoptosis. Reported Rpn-13 inhibitors covalently bind to the Rpn-13's Pru domain and have been effective anti-hematological cancer agents. Here, we describe the discovery of TCL-1, a non-covalent binder to the Pru domain. Optimization of TCL-1's carboxylate group to an ester increases its cytotoxicity in hematological cancer cell lines. Altogether, our data provides a new scaffold for future medicinal chemistry optimization to target Rpn-13 therapeutically.
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