8CK8 image
Entry Detail
PDB ID:
8CK8
Keywords:
Title:
STRUCTURE OF HIF2A-ARNT HETERODIMER IN COMPLEX WITH (S)-1-Cyclohexyloxy-5,5-difluoro-3-methanesulfonyl-5,6-dihydro-4H-cyclopenta[c]thiophen-4-ol
Biological Source:
Source Organism:
Host Organism:
PDB Version:
Deposition Date:
2023-02-14
Release Date:
2023-07-19
Method Details:
Experimental Method:
Resolution:
2.30 Å
R-Value Free:
0.27
R-Value Work:
0.20
R-Value Observed:
0.20
Space Group:
C 1 2 1
Macromolecular Entities
Polymer Type:polypeptide(L)
Description:Endothelial PAS domain-containing protein 1
Chain IDs:A
Chain Length:118
Number of Molecules:1
Biological Source:Homo sapiens
Polymer Type:polypeptide(L)
Description:Aryl hydrocarbon receptor nuclear translocator
Chain IDs:B
Chain Length:122
Number of Molecules:1
Biological Source:Homo sapiens
Ligand Molecules
Primary Citation
Discovery of Cycloalkyl[ c ]thiophenes as Novel Scaffolds for Hypoxia-Inducible Factor-2 alpha Inhibitors.
J.Med.Chem. 66 8666 8686 (2023)
PMID: 37403966 DOI: 10.1021/acs.jmedchem.3c00332

Abstact

Hypoxia-inducible factors (HIFs) are heterodimeric transcription factors induced in diverse pathophysiological settings. Inhibition of HIF-2α has become a strategy for cancer treatment since the discovery that small molecules, upon binding into a small cavity of the HIF-2α PAS B domain, can alter its conformation and disturb the activity of the HIF dimer complex. Herein, the design, synthesis, and systematic SAR exploration of cycloalkyl[c]thiophenes as novel HIF-2α inhibitors are described, providing the first chemotype featuring an alkoxy-aryl scaffold. X-ray data confirmed the ability of these inhibitors to induce perturbation of key amino acids by appropriately presenting key pharmacophoric elements in the hydrophobic cavity. Selected compounds showed inhibition of VEGF-A secretion in cancer cells and prevention of Arg1 expression and activity in IL4-stimulated macrophages. Moreover, in vivo target gene modulation was demonstrated with compound 35r. Thus, the disclosed HIF-2α inhibitors represent valuable tools for investigating selective HIF-2α inhibition and its effect on tumor biology.

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Primary Citation of related structures