Proteomics

Dataset Information

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Proteomics analysis with the WDR5 PROTACs


ABSTRACT: Active gene transcription requires accessible chromatin. Post-translational modifications of histone proteins modulate accessibility to target genes, a process that is controlled by multiple chromatin modifying enzymes, remodelers and epigenetic reader proteins. Histone H3K4 methylation serves as hallmark of actively transcribed genes and is introduced by histone methyltransferases (HMTs). For proper function of HMT activity, several adaptor proteins are required. One of these proteins is the WD-repeat containing protein 5 (WDR5) that acts as scaffolding component in HMT complexes and that has been associated with controlling transcription factors including MYC and long non-coding RNAs. The wide influence of dysfunctional HMTs complexes and the typically upregulated MYC levels in diverse tumor types has made WDR5 an attractive cancer 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 be an elegant way to target all oncogenic function. In this study, we present the design, synthesis and evaluation of two diverse WDR5 degrader series based on two WIN site binding scaffolds. We show that linker nature and length are essential for successful degradation and strongly influences the degradation rate. In the presented datasets, we determined the intracellular degradation specificity of the WDR5 PROTACs (8g, 6, 17b, 14). We therefore treated MV4-11 cells with 8g and 17b, the corresponding ligands 6 and 14, or DMSO and quantified the induced degradation using a label free approach.

INSTRUMENT(S): Q Exactive HF-X

ORGANISM(S): Homo Sapiens (human)

TISSUE(S): Cell Suspension Culture, Blood, Macrophage

DISEASE(S): Acute Leukemia

SUBMITTER: Nicola Berner  

LAB HEAD: Prof. Dr. Bernhard Kuster

PROVIDER: PXD025257 | Pride | 2022-01-27

REPOSITORIES: Pride

Dataset's files

Source:
Action DRS
4465_RA1_P051358_S00_A00.raw Raw
4465_RA1_P051360_S00_A00.raw Raw
4465_RA1_P051361_S00_A00.raw Raw
4465_RA1_P051362_S00_A00.raw Raw
4465_RA1_P051363_S00_A00.raw Raw
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Publications


Histone H3K4 methylation serves as a post-translational hallmark of actively transcribed genes and is introduced by histone methyltransferase (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 noncoding RNAs and transcription factors including MYC. The wide influence of dysfunctional HMT complexes and the typically upregulated MYC levels in diverse tumor types suggested WDR5 as an attractive  ...[more]

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