Small molecule inhibition of the KRAS–PDEδ interaction impairs oncogenic KRAS signalling
Abstract
The KRAS oncogene product is considered a major target in anticancer drug discovery. However, direct interference with KRAS signalling has not yet led to clinically useful drugs. Correct localization and signalling by farnesylated KRAS is regulated by the prenyl-binding protein PDEδ, which sustains the spatial organization of KRAS by facilitating its diffusion in the cytoplasm. Here we report that interfering with binding of mammalian PDEδ to KRAS by means of small molecules provides a novel opportunity to suppress oncogenic RAS signalling by altering its localization to endomembranes. Biochemical screening and subsequent structure-based hit optimization yielded inhibitors of the KRAS-PDEδ interaction that selectively bind to the prenyl-binding pocket of PDEδ with nanomolar affinity, inhibit oncogenic RAS signalling and suppress in vitro and in vivo proliferation of human pancreatic ductal adenocarcinoma cells that are dependent on oncogenic KRAS. Our findings may inspire novel drug discovery efforts aimed at the development of drugs targeting oncogenic RAS.
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- Authors
- Zimmermann, G., Papke, B., Ismail, S., Vartak, N., Chandra, A., Hoffmann, M., Hahn, S. A., Triola, G., Wittinghofer, A., Bastiaens, P. I. H., & Waldmann, H.
- Affiliations
- Max Planck Institute of Molecular Physiology (DE)
- Ruhr University Bochum (DE)
- TU Dortmund University (DE)
- Corresponding author
- Wittinghofer, Alfred
- Bastiaens, Philippe I. H.
- Waldmann, Herbert
- ORCID
- Venue
- Nature
- Published
- 2013-05
- Volume
- 497
- Issue
- 7451
- Pages
- 638-642
- ISSN
- 0028-0836 (ISSN-L)
- 1476-4687
- OpenAlex
- W2043282329
- Cited by
- 596
- References
- 28
- Citations by year
- 2026: 15 · 2025: 13 · 2024: 29 · 2023: 31 · 2022: 34 · 2021: 51 · 2020: 36 · 2019: 46 · 2018: 54 · 2017: 65 · 2016: 56 · 2015: 65 · 2014: 85 · 2013: 15
- FWCI
- 33.12
- Type
- journal article
- Language
- en
- Open access
- closed
- Licence
- www.springer.com/tdm (tdm)
- Locations
- Nature (publishedVersion)
- PubMed (publishedVersion)
- RePEc: Research Papers in Economics (submittedVersion)
- DORA PSI (Paul Scherrer Institute) (submittedVersion)
- Max Planck Institute for Plasma Physics (submittedVersion)
- ENLIGHTEN (Jurnal Bimbingan dan Konseling Islam) (submittedVersion)
- MPG.PuRe (Max Planck Society) (submittedVersion)
- Funders
- European Commission
- Topics
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Protein Kinase Regulation and GTPase Signaling
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Protein Tyrosine Phosphatases
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Melanoma and MAPK Pathways
- Keywords
- KRAS, PDEδ, small molecule inhibitors, pancreatic ductal adenocarcinoma, anticancer drug discovery
- MeSH terms
- Adenocarcinoma, Animals, Benzimidazoles, Binding Sites, Cell Line, Dogs, Humans, Hydrogen Bonding, Mice, Nude, Models, Molecular, Molecular Conformation, Neoplasm Transplantation, Protein Binding, Signal Transduction, Oncogene Protein p21(ras), Mitogen-Activated Protein Kinases, MAP Kinase Signaling System, Carcinoma, Pancreatic Ductal, Cell Line, Tumor, Cell Proliferation, Mice, Cyclic Nucleotide Phosphodiesterases, Type 6
About these checks
Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.
Statistics and arithmetic are recomputed, not judged.
Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.
What counts as a claim ›How we measure confidence ›How we check this ›
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