2. Academic Validation
  3. KuINins as a New Class of HIV-1 Inhibitors That Block Post-Integration DNA Repair

KuINins as a New Class of HIV-1 Inhibitors That Block Post-Integration DNA Repair

  • Int J Mol Sci. 2023 Dec 11;24(24):17354. doi: 10.3390/ijms242417354.
Andrey Anisenko 1 2 3,  Simon Galkin 2,  Andrey A Mikhaylov 4,  Maria G Khrenova 1 5,  Yulia Agapkina 1 3,  Sergey Korolev 1 3,  Lidia Garkul 2,  Vasilissa Shirokova 4 6,  Viktoria A Ikonnikova 4 6,  Alexander Korlyukov 7 8,  Pavel Dorovatovskii 9,  Mikhail Baranov 4 8,  Marina Gottikh 2 3
Affiliations

Affiliations

  • 1 Chemistry Department, Lomonosov Moscow State University, 119992 Moscow, Russia.
  • 2 Faculty of Bioengineering and Bioinformatics, Lomonosov Moscow State University, 119992 Moscow, Russia.
  • 3 Belozersky Institute of Physico-Chemical Biology, Lomonosov Moscow State University, 119992 Moscow, Russia.
  • 4 Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry of the Russian Academy of Sciences, 117997 Moscow, Russia.
  • 5 Federal Research Centre of Biotechnology, Russian Academy of Sciences, 119071 Moscow, Russia.
  • 6 Higher Chemical College, D.I. Mendeleev University of Chemical Technology of Russia, 125047 Moscow, Russia.
  • 7 Nesmeyanov Institute of Organoelement Compounds, 119334 Moscow, Russia.
  • 8 Institute of Translational Medicine and Institute of Pharmacy and Medicinal Chemistry, Pirogov Russian National Research Medical University, 117997 Moscow, Russia.
  • 9 National Research Center "Kurchatov Institute", 123098 Moscow, Russia.
PMID: 38139188 DOI: 10.3390/ijms242417354
Abstract

Integration of HIV-1 genomic cDNA results in the formation of single-strand breaks in cellular DNA, which must be repaired for efficient viral replication. Post-integration DNA repair mainly depends on the formation of the HIV-1 integrase complex with the Ku70 protein, which promotes DNA-PK assembly at sites of integration and its activation. Here, we have developed a first-class inhibitor of the integrase-Ku70 complex formation that inhibits HIV-1 replication in Cell Culture by acting at the stage of post-integration DNA repair. This inhibitor, named s17, does not affect the main cellular function of Ku70, namely its participation in the repair of double-strand DNA breaks through the non-homologous end-joining pathway. Using a molecular dynamics approach, we have constructed a model for the interaction of s17 with Ku70. According to this model, the interaction of two phenyl radicals of s17 with the L76 residue of Ku70 is important for this interaction. The requirement of two phenyl radicals in the structure of s17 for its inhibitory properties was confirmed using a set of s17 derivatives. We propose to stimulate compounds that inhibit post-integration repair by disrupting the integrase binding to Ku70 KuINins.

Keywords

DNA-PK; HIV-1; Ku70; KuINins; inhibitor of protein–protein interaction; integrase; post-integration repair.

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