Targeted protein degradation using chimeric human E2 ubiquitin-conjugating enzymes
Proteins can be targeted for degradation by engineering biomolecules that direct them to the eukaryotic ubiquitination machinery. For instance, the fusion of an E3 ubiquitin ligase to a suitable target binding domain creates a 'biological Proteolysis-Targeting Chimera' (bioPROTAC). Here we employ an analogous approach where the target protein is recruited directly to a human E2 ubiquitin-conjugating enzyme via an attached target binding domain. Through rational design and screening we develop E2 bioPROTACs that induce the degradation of the human intracellular proteins SHP2 and KRAS. Using global proteomics, we characterise the target-specific and wider effects of E2 vs. VHL-based fusions. Taking SHP2 as a model target, we also employ a route to bioPROTAC discovery based on protein display libraries, yielding a degrader with comparatively weak affinity capable of suppressing SHP2-mediated signalling.
Authors
- Sergio Martínez Cuesta (ORCID: https://orcid.org/0000-0001-9806-2805)
- Christin Bauer (ORCID: https://orcid.org/0000-0003-3466-7076)
- Raffaello Cimbro (ORCID: https://orcid.org/0000-0002-6251-5160)
- Tuula M Eriksson
- Nathalie Barrett
- Sandrine Legg
- Fiona Pachl
- James Hunt (ORCID: https://orcid.org/0000-0002-3144-3467)
- Radhika Patel (ORCID: https://orcid.org/0000-0002-6880-0149)
- Katelyn Cassidy (ORCID: https://orcid.org/0000-0002-4487-0011)
- Ralph Minter (ORCID: https://orcid.org/0000-0001-5571-3102)
- D. Gareth Rees (ORCID: https://orcid.org/0000-0002-4268-6018)
- Jonathan D. Taylor (ORCID: https://orcid.org/0000-0002-9797-3989)
- Matthew Burrell
- James Dodgson
- Aidan Riley
- Andrew X Zhang
Institutions
- AstraZeneca (United Kingdom) (GB)
- AstraZeneca (South Korea) (KR)
- AstraZeneca (Australia) (AU)
- AstraZeneca (Singapore) (SG)
- AstraZeneca (Poland) (PL)
- AstraZeneca (United States) (US)
- AstraZeneca (Germany) (DE)
Publication Details
- Journal
- Communications Biology
- Published
- 2024-09-19
- DOI
- https://doi.org/10.1038/s42003-024-06803-4
- Citations
- 14
- Primary Topic
- Protein Degradation and Inhibitors
- Type
- article
- Field-Weighted Citation Impact
- 3.27
Funders
- AstraZeneca