Publication Date
2-9-2023
Journal
Journal of Medicinal Chemistry
DOI
10.1021/acs.jmedchem.2c01886
PMID
36719862
PMCID
PMC9924264
PubMedCentral® Posted Date
1-31-2023
PubMedCentral® Full Text Version
Post-print
Published Open-Access
yes
Keywords
Humans, Signal Transduction, DNA, Gene Library, Bone Morphogenetic Protein Receptors, Type II
Abstract
The discovery of monokinase-selective inhibitors for patients is challenging because the 500+ kinases encoded by the human genome share highly conserved catalytic domains. Until now, no selective inhibitors unique for a single transforming growth factor β (TGFβ) family transmembrane receptor kinase, including bone morphogenetic protein receptor type 2 (BMPR2), have been reported. This dearth of receptor-specific kinase inhibitors hinders therapeutic options for skeletal defects and cancer as a result of an overactivated BMP signaling pathway. By screening 4.17 billion “unbiased” and “kinase-biased” DNA-encoded chemical library molecules, we identified hits CDD-1115 and CDD-1431, respectively, that were low-nanomolar selective kinase inhibitors of BMPR2. Structure–activity relationship studies addressed metabolic lability and high-molecular-weight issues, resulting in potent and BMPR2-selective inhibitor analogs CDD-1281 (IC50 = 1.2 nM) and CDD-1653 (IC50 = 2.8 nM), respectively. Our work demonstrates that DNA-encoded chemistry technology (DEC-Tec) is reliable for identifying novel first-in-class, highly potent, and selective kinase inhibitors.
Graphical Abstract
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