By design: Novel small-molecule inhibitors of the interaction between the von Hippel–Lindau ligase (VHL) and its molecular target HIF1α, a transcription factor involved in oxygen sensing, have been developed and studied. The most potent inhibitor binds with an IC50 value of 0.9 μM and is thus the first sub-micromolar inhibitor of the VHL–HIF1α interaction.
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