Title: 2-Hydroxyisoquinoline-1,3(2H,4H)-diones (HIDs), novel inhibitors of HIV integrase with a high barrier to resistance
Authors: Desimmie, Belete Ayele
Demeulemeester, Jonas
Suchaud, Virginie
Taltynov, Oliver
Billamboz, Muriel
Lion, Cedric
Bailly, Fabrice
Strelkov, Sergei
Debyser, Zeger
Cotelle, Philippe
Christ, Frauke # ×
Issue Date: Mar-2013
Publisher: American Chemical Society
Series Title: ACS Chemical Biology vol:8 issue:6 pages:1187-1194
Abstract: Clinical HIV-1 integrase (IN) strand transfer inhibitors (INSTIs) potently inhibit viral replication with a dramatic drop in viral load. However, the emergence of resistance to these drugs underscores the need to develop next-generation IN catalytic site inhibitors with improved resistance profiles. Here, we present a novel candidate IN inhibitor; MB-76, a 2-hydroxyisoquinoline-1,3(2H,4H)-dione (HID) derivative. MB-76 potently blocks HIV integration and is active against a panel of wild-type as well as raltegravir-resistant HIV-1 variants. The lack of cross-resistance with other INSTIs and the absence of resistance selection in cell culture indicate the potential of HID derivatives compared to previous INSTIs. A crystal structure of MB-76 bound to the wild-type prototype foamy virus intasome reveals an overall binding mode similar to that of INSTIs. Its compact scaffold displays all three Mg2+ chelating oxygen atoms from a single ring, ensuring that the only direct contacts with IN are the invariant P214 and Q215 residues of PFV IN (P145 and Q146 for HIV-1 IN respectively) which may partially explain the difficulty of selecting replicating resistant variants. Moreover, the extended, dolutegravir-like linker connecting the MB-76 metal chelating core and p-fluorobenzyl group can provide additional flexibility in the perturbed active sites of raltegravir-resistant INs. The compound identified represents a potential candidate for further (pre)clinical development as next-generation HIV IN catalytic site inhibitor.
ISSN: 1554-8929
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Molecular Virology and Gene Therapy
× corresponding author
# (joint) last author

Files in This Item:
File Description Status SizeFormat
Belete (2013).pdf Published 420KbAdobe PDFView/Open Request a copy

These files are only available to some KU Leuven Association staff members


All items in Lirias are protected by copyright, with all rights reserved.

© Web of science