6fex image
Entry Detail
PDB ID:
6FEX
Keywords:
Title:
DDR1, 2-[4-bromo-2-oxo-1'-(1H-pyrazolo[4,3-b]pyridine-5-carbonyl)spiro[indole-3,4'-piperidine]-1-yl]-N-(2,2,2-trifluoroethyl)acetamide, 1.291A, P212121, Rfree=17.4%
Biological Source:
Source Organism:
Host Organism:
PDB Version:
Deposition Date:
2018-01-03
Release Date:
2018-11-28
Method Details:
Experimental Method:
Resolution:
1.29 Å
R-Value Free:
0.17
R-Value Work:
0.13
R-Value Observed:
0.13
Space Group:
P 1 21 1
Macromolecular Entities
Polymer Type:polypeptide(L)
Description:Epithelial discoidin domain-containing receptor 1
Mutations:DEL(730-735) 2-[4-bromo-2-oxo-1'-(1H-pyrazolo[4,3-b]pyridine-5-carbonyl)spiro[indole-3,4'-piperidine]-1-yl]-N-(2,2,2-trifluoroethyl)acetamide
Chain IDs:A
Chain Length:321
Number of Molecules:1
Biological Source:Homo sapiens
Primary Citation
DNA-Encoded Library-Derived DDR1 Inhibitor Prevents Fibrosis and Renal Function Loss in a Genetic Mouse Model of Alport Syndrome.
Acs Chem.Biol. 14 37 49 (2019)
PMID: 30452219 DOI: 10.1021/acschembio.8b00866

Abstact

The importance of Discoidin Domain Receptor 1 (DDR1) in renal fibrosis has been shown via gene knockout and use of antisense oligonucleotides; however, these techniques act via a reduction of DDR1 protein, while we prove the therapeutic potential of inhibiting DDR1 phosphorylation with a small molecule. To date, efforts to generate a selective small-molecule to specifically modulate the activity of DDR1 in an in vivo model have been unsuccessful. We performed parallel DNA encoded library screens against DDR1 and DDR2, and discovered a chemical series that is highly selective for DDR1 over DDR2. Structure-guided optimization efforts yielded the potent DDR1 inhibitor 2.45, which possesses excellent kinome selectivity (including 64-fold selectivity over DDR2 in a biochemical assay), a clean in vitro safety profile, and favorable pharmacokinetic and physicochemical properties. As desired, compound 2.45 modulates DDR1 phosphorylation in vitro as well as prevents collagen-induced activation of renal epithelial cells expressing DDR1. Compound 2.45 preserves renal function and reduces tissue damage in Col4a3-/- mice (the preclinical mouse model of Alport syndrome) when employing a therapeutic dosing regime, indicating the real therapeutic value of selectively inhibiting DDR1 phosphorylation in vivo. Our results may have wider significance as Col4a3-/- mice also represent a model for chronic kidney disease, a disease which affects 10% of the global population.

Legend

Protein

Chemical

Disease

Primary Citation of related structures