JOURNAL ARTICLE

Small-molecule proteomimetic inhibitors of the HIF-1α-p300 protein-protein interaction

George M Burslem, Hannah F Kyle, Alexander L Breeze, Thomas A Edwards, Adam Nelson, Stuart L Warriner, Andrew J Wilson
Chembiochem: a European Journal of Chemical Biology 2014 May 26, 15 (8): 1083-7
24782431
The therapeutically relevant hypoxia inducible factor HIF-1α-p300 protein-protein interaction can be orthosterically inhibited with α-helix mimetics based on an oligoamide scaffold that recapitulates essential features of the C-terminal helix of the HIF-1α C-TAD (C-terminal transactivation domain). Preliminary SAR studies demonstrated the important role of side-chain size and hydrophobicity/hydrophilicity in determining potency. These small molecules represent the first biophysically characterised HIF-1α-p300 PPI inhibitors and the first examples of small-molecule aromatic oligoamide helix mimetics to be shown to have a selective binding profile. Although the compounds were less potent than HIF-1α, the result is still remarkable in that the mimetic reproduces only three residues from the 42-residue HIF-1α C-TAD from which it is derived.

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