Download MendeleyTargeting HIV-1 Reverse Transcriptase Using a Fragment-Based Approach.
Mansouri, M., Rumrill, S., Dawson, S., Johnson, A., Pinson, J.A., Gunzburg, M.J., Latham, C.F., Barlow, N., Mbogo, G.W., Ellenberg, P., Headey, S.J., Sluis-Cremer, N., Tyssen, D., Bauman, J.D., Ruiz, F.X., Arnold, E., Chalmers, D.K., Tachedjian, G.(2023) Molecules 28
- PubMed: 37049868
- DOI: https://doi.org/10.3390/molecules28073103
- Primary Citation of Related Structures:
8FFX - PubMed Abstract:
Human immunodeficiency virus type I (HIV-1) is a retrovirus that infects cells of the host's immune system leading to acquired immunodeficiency syndrome and potentially death. Although treatments are available to prevent its progression, HIV-1 remains a major burden on health resources worldwide. Continued emergence of drug-resistance mutations drives the need for novel drugs that can inhibit HIV-1 replication through new pathways. The viral protein reverse transcriptase (RT) plays a fundamental role in the HIV-1 replication cycle, and multiple approved medications target this enzyme. In this study, fragment-based drug discovery was used to optimize a previously identified hit fragment (compound B-1 ), which bound RT at a novel site. Three series of compounds were synthesized and evaluated for their HIV-1 RT binding and inhibition. These series were designed to investigate different vectors around the initial hit in an attempt to improve inhibitory activity against RT. Our results show that the 4-position of the core scaffold is important for binding of the fragment to RT, and a lead compound with a cyclopropyl substitution was selected and further investigated. Requirements for binding to the NNRTI-binding pocket (NNIBP) and a novel adjacent site were investigated, with lead compound 27 -a minimal but efficient NNRTI-offering a starting site for the development of novel dual NNIBP-Adjacent site inhibitors.
Organizational Affiliation:
Medicinal Chemistry, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, VIC 3052, Australia.
