Abstract:
:Discovered as a modulator of the toxic response to environmental pollutants, aryl hydrocarbon receptor (AhR) has recently gained attention for its involvement in various physiological and pathological pathways. AhR is a ligand-dependent transcription factor activated by a large array of chemical compounds, which include metabolites of l-tryptophan (l-Trp) catabolism as endogenous ligands of the receptor. Among these, 2-(1'H-indole-3'-carbonyl)thiazole-4-carboxylic acid methyl ester (ITE) has attracted interest in the scientific community, being endowed with nontoxic, immunomodulatory, and anticancer AhR-mediated functions. So far, no information about the binding mode and interactions of ITE with AhR is available. In this study, we used docking and molecular dynamics to propose a putative binding mode of ITE into the ligand binding pocket of AhR. Mutagenesis studies were then instrumental in validating the proposed binding mode, identifying His 285 and Tyr 316 as important key residues for ligand-dependent receptor activation. Finally, a set of ITE analogues was synthesized and tested to further probe molecular interactions of ITE to AhR and characterize the relevance of specific functional groups in the chemical structure for receptor activity.
journal_name
ChemMedChemjournal_title
ChemMedChemauthors
Dolciami D,Gargaro M,Cerra B,Scalisi G,Bagnoli L,Servillo G,Fazia MAD,Puccetti P,Quintana FJ,Fallarino F,Macchiarulo Adoi
10.1002/cmdc.201700669subject
Has Abstractpub_date
2018-02-06 00:00:00pages
270-279issue
3eissn
1860-7179issn
1860-7187journal_volume
13pub_type
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