ArticleMolecules (Basel, Switzerland)2025
Design and Synthesis of Novel Candidate CK1δ Proteolysis Targeting Chimeras (PROTACs).
Article in Molecules (Basel, Switzerland), 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
The dysregulation of CK1 isoforms is linked to various types of diseases, including neurodegeneration and different types of neoplasia such as colon, pancreatic, breast, and ovarian cancer. For CK1 isoforms, a plethora of effective small molecule inhibitors are available. However, only a few degraders of CK1α and, more recently, proteolysis targeting chimeras (PROTACs) for CK1δ/CK1ε have been reported. In this study, we applied the PROTAC concept by harnessing molecular modelling to design and synthesize a series of candidate CK1δ-targeting PROTACs based on a highly specific and potent benzothiazole-based CK1δ inhibitor that we previously developed in our lab. In the present study, we established a modular synthetic platform to systematically generate a set of PROTAC degrader candidates consisting of the CK1δ-specific inhibitor scaffold, alkyl and PEG linker motifs with various lengths, and Cereblon (CRBN)-engaging pomalidomide and thalidomide derivatives as E3 ligase binders. We demonstrate that several PROTACs degrade CK1δ/ε in various cells. The most potent PROTAC
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