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Discovery of Clinical Candidate (1,4)-4-(()-2-(()-6-Fluoro-5-imidazo[5,1-]isoindol-5-yl)-1-hydroxyethyl)cyclohexan-1-ol (Navoximod), a Potent and Selective Inhibitor of Indoleamine 2,3-Dioxygenase 1. | LitMetric
A novel class of 5-substituted 5-imidazo[5,1-]isoindoles are described as potent inhibitors of indoleamine 2,3-dioxygenase 1 (IDO1). A structure-based drug design approach was used to elaborate the 5-imidazo[5,1-]isoindole core and to improve potency and pharmacological properties. Suitably placed hydrophobic and polar functional groups in the lead molecule allowed improvement of IDO1 inhibitory activity while minimizing off-target liabilities. Structure-activity relationship studies focused on optimizing IDO1 inhibition potency and a pharmacokinetic profile amenable to oral dosing while controlling CYP450 and hERG inhibitory properties.
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Similar Publications
Macquarie University , Sydney, Australia.
The hemoprotein indoleamine 2,3-dioxygenase-1 (IDO1) is the first and rate-limiting enzyme in mammalian tryptophan metabolism. Interest in IDO1 continues to grow, due to the ever expanding influence IDO1 plays in the immune response. This study examined the contribution of all individual cysteine residues towards the overall catalytic properties and stability of recombinant human IDO1 via mutagenesis studies using a range of biochemical and spectroscopic techniques, including in vitro kinetic assessment, secondary structure identification via circular dichroism spectroscopy and thermal stability assessment.
Indiana University , Bloomington, USA.
Indoleamine 2'3 dioxygenase (INDO), the rate-limiting enzyme in the catabolism of the essential amino acid L-tryptophan, is induced in many cell lines following interferon gamma (IFN-gamma) treatment. The induction of this enzyme has been associated with the antiparasitic and cytotoxic activities of human IFN-gamma. DNA analysis coupled to morphologic studies indicated that ME180 cells underwent apoptosis within 48 h of treatment with IFN-gamma.
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