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Drug-like Inhibitors of DC-SIGN Based on a Quinolone Scaffold

H. Zhang, O. Daněk, D. Makarov, S. Rádl, D. Kim, J. Ledvinka, K. Vychodilová, J. Hlaváč, J. Lefèbre, M. Denis, C. Rademacher, P. Ménová

. 2022 ; 13 (6) : 935-942. [pub] 20220510

Jazyk angličtina Země Spojené státy americké

Typ dokumentu časopisecké články

Perzistentní odkaz   https://www.medvik.cz/link/bmc22017185

DC-SIGN (dendritic cell-specific intercellular adhesion molecule-3-grabbing non-integrin) is a pattern recognition receptor expressed on immune cells and involved in the recognition of carbohydrate signatures present on various pathogens, including HIV, Ebola, and SARS-CoV-2. Therefore, developing inhibitors blocking the carbohydrate-binding site of DC-SIGN could generate a valuable tool to investigate the role of this receptor in several infectious diseases. Herein, we performed a fragment-based ligand design using 4-quinolone as a scaffold. We synthesized a library of 61 compounds, performed a screening against DC-SIGN using an STD reporter assay, and validated these data using protein-based 1H-15N HSQC NMR. Based on the structure-activity relationship data, we demonstrate that ethoxycarbonyl or dimethylaminocarbonyl in position 2 or 3 is favorable for the DC-SIGN binding activity, especially in combination with fluorine, ethoxycarbonyl, or dimethylaminocarbonyl in position 7 or 8. Furthermore, we demonstrate that these quinolones can allosterically modulate the carbohydrate binding site, which offers an alternative approach toward this challenging protein target.

Citace poskytuje Crossref.org

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$a DC-SIGN (dendritic cell-specific intercellular adhesion molecule-3-grabbing non-integrin) is a pattern recognition receptor expressed on immune cells and involved in the recognition of carbohydrate signatures present on various pathogens, including HIV, Ebola, and SARS-CoV-2. Therefore, developing inhibitors blocking the carbohydrate-binding site of DC-SIGN could generate a valuable tool to investigate the role of this receptor in several infectious diseases. Herein, we performed a fragment-based ligand design using 4-quinolone as a scaffold. We synthesized a library of 61 compounds, performed a screening against DC-SIGN using an STD reporter assay, and validated these data using protein-based 1H-15N HSQC NMR. Based on the structure-activity relationship data, we demonstrate that ethoxycarbonyl or dimethylaminocarbonyl in position 2 or 3 is favorable for the DC-SIGN binding activity, especially in combination with fluorine, ethoxycarbonyl, or dimethylaminocarbonyl in position 7 or 8. Furthermore, we demonstrate that these quinolones can allosterically modulate the carbohydrate binding site, which offers an alternative approach toward this challenging protein target.
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$a Rádl, Stanislav $u University of Chemistry and Technology, Prague, Technická 5, 16628 Prague 6, Czech Republic $u Zentiva a.s., U Kabelovny 130, 10237 Prague 10, Czech Republic
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