Structural Biology-Inspired Discovery of Novel KRAS–PDEδ Inhibitors
Abstract
Structural biology is a powerful tool for investigating the stereospecific interactions between a protein and its ligand. Herein, an unprecedented chiral binding pattern was observed for inhibitors of KRAS-PDEδ interactions. Virtual screening and X-ray crystallography studies revealed that two enantiomers of a racemic inhibitor could bind at different sites. Fragment-based drug design was used to identify highly potent PDEδ inhibitors that can be used as promising lead compounds for target validation and antitumor drug development.
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Both compound (125) and compound (126) effectively inhibited KRAS-PDEδ PPI, disrupted the correct localization of KRAS on the cell membrane, down-regulated the phosphorylation of key proteins Erk and Akt in the downstream pathway of KRAS, and induced apoptosis in KRAS-mutated pancreatic cancer cell lines.
“Ultimately, both compound (125) and compound (126) effectively inhibited KRAS-PDEδ PPI, disrupted the correct localization of KRAS on the cell membrane, down-regulated the phosphorylation of key proteins Erk and Akt in the downstream pathway of KRAS, and induced apoptosis in KRAS-mutated pancreatic cancer cell lines.353”
From Recent advances in targeting the “undruggable” proteins: from drug discovery to clinical trials (2023) · cites this paper as [353]
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Discovery of Novel KRAS-PDEδ Inhibitors by Fragment-Based Drug Design
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- Authors
- Jiang, Y., Zhuang, C., Chen, L., Lu, J., Dong, G., Miao, Z., Zhang, W., Li, J., & Sheng, C.
- Affiliations
- Second Military Medical University (CN)
- East China University of Science and Technology (CN)
- Corresponding author
- Sheng, Chunquan
- ORCID
- Venue
- Journal of Medicinal Chemistry
- Publisher
- American Chemical Society (ACS)
- Published
- 2017-10-03
- Volume
- 60
- Issue
- 22
- Pages
- 9400-9406
- ISSN
- 0022-2623 (ISSN-L)
- 1520-4804
- OpenAlex
- W2755409777
- Cited by
- 34
- References
- 28
- Citations by year
- 2026: 3 · 2025: 4 · 2024: 5 · 2023: 5 · 2022: 4 · 2021: 4 · 2020: 4 · 2019: 3 · 2018: 2
- FWCI
- 1.12
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Journal of Medicinal Chemistry (publishedVersion)
- PubMed (publishedVersion)
- Funders
- Shanghai Municipal Education Commission (16CG42)
- National Natural Science Foundation of China (21738002)
- Shanghai Education Development Foundation (16CG42)
- Shanghai Municipal Health and Family Planning Commission (2017YQ052)
- Topics
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Phosphodiesterase function and regulation
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Protein Kinase Regulation and GTPase Signaling
- Physical Sciences › Computer Science › Computational Theory and Mathematics › Computational Drug Discovery Methods
- Keywords
- KRAS, PDEδ, fragment-based drug discovery, virtual screening, target validation, anticancer drug development, lead compound identification
- MeSH terms
- Humans, Stereoisomerism, Drug Design, Proto-Oncogene Proteins p21(ras), Apoptosis, Crystallography, X-Ray, Cell Line, Tumor, Quinazolinones, Cyclic Nucleotide Phosphodiesterases, Type 6, Protein Multimerization
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