RT Journal Article SR Electronic T1 Design, Synthesis and Evaluation of WD-repeat containing protein 5 (WDR5) degraders JF bioRxiv FD Cold Spring Harbor Laboratory SP 2021.04.12.439490 DO 10.1101/2021.04.12.439490 A1 Anja Dölle A1 Bikash Adhikari A1 Andreas Krämer A1 Janik Weckesser A1 Nicola Berner A1 Lena-Marie Berger A1 Mathias Diebold A1 Magdalena M. Szewczyk A1 Dalia Barsyte-Lovejoy A1 Cheryl H. Arrowsmith A1 Jakob Gebel A1 Frank Löhr A1 Volker Dötsch A1 Martin Eilers A1 Stephanie Heinzlmeir A1 Bernhard Küster A1 Christoph Sotriffer A1 Elmar Wolf A1 Stefan Knapp YR 2021 UL http://biorxiv.org/content/early/2021/04/12/2021.04.12.439490.abstract AB Histone H3K4 methylation serves as post-translational hallmark of actively transcribed genes and is introduced by histone methyltransferases (HMT) and its regulatory scaffolding proteins. One of these is the WD-repeat containing protein 5 (WDR5) that has also been associated with controlling long non-coding RNAs and transcription factors including MYC. The wide influence of dysfunctional HMTs complexes and the typically upregulated MYC levels in diverse tumor types suggested WDR5 as an attractive drug target. Indeed, protein-protein interface inhibitors for two protein interaction interfaces on WDR5 have been developed. While such compounds only inhibit a subset of WDR5 interactions, chemically induced proteasomal degradation of WDR5 might represent an elegant way to target all oncogenic function. This study presents the design, synthesis and evaluation of two diverse WDR5 degrader series based on two WIN site binding scaffolds and shows that linker nature and length strongly influence degradation efficacy.Competing Interest StatementThe authors have declared no competing interest.ASH2Labsent, small or homeotic-2 likeBRETbioluminescence Resonance Energy TransferDSFdifferential scanning fluorimetryHMTHistone methyltransferaseITCisothermal titration calorimetryKMTLysine methyltransferaseMbIIIbMyc box IIIbMLLmixed lineage leukemiaPROTACProteolysis targeting chimeraRBBP5retinoblastoma binding protein 5SETSu(var)3-9, Enhancer-of-zeste and TrithoraxWBMWDR5-bindingWDR5WD-repreat containing protein 5WINWDR5-interacting