ArticleAntimicrobial agents and chemotherapy2014
Identification of highly conserved residues involved in inhibition of HIV-1 RNase H function by Diketo acid derivatives.
Article in Antimicrobial agents and chemotherapy, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 40 papers.
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40 citing papers in PubMed, 68 citations in OpenAlex.
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- Pyrroles as Privileged Scaffolds in the Search for New Potential HIV Inhibitors.Pharmaceuticals (Basel, Switzerland) · 2021Review
- Quinolinonyl Non-Diketo Acid Derivatives as Inhibitors of HIV-1 Ribonuclease H and Polymerase Functions of Reverse Transcriptase.Journal of medicinal chemistry · 2021Article
- Exploring New Scaffolds for the Dual Inhibition of HIV-1 RT Polymerase and Ribonuclease Associated Functions.Molecules (Basel, Switzerland) · 2021Article
- Avoiding Drug Resistance in HIV Reverse Transcriptase.Chemical reviews · 2021Review
- HIV-1 Reverse Transcriptase/Integrase Dual Inhibitors: A Review of Recent Advances and Structure-activity Relationship Studies.Iranian journal of pharmaceutical research : IJPR · 2021Review
- Retroviral RNase H: Structure, mechanism, and inhibition.The Enzymes · 2021Review
- Scaffold hopping and optimisation of 3',4'-dihydroxyphenyl- containing thienopyrimidinones: synthesis of quinazolinone derivatives as novel allosteric inhibitors of HIV-1 reverse transcriptase-associated ribonuclease H.Journal of enzyme inhibition and medicinal chemistry · 2020Article
- Targeting HIV-1 RNase H:Viruses · 2020Article
- Pyrrolyl Pyrazoles as Non-Diketo Acid Inhibitors of the HIV-1 Ribonuclease H Function of Reverse Transcriptase.ACS medicinal chemistry letters · 2020Article
- 2-(Arylamino)-6-(trifluoromethyl)nicotinic Acid Derivatives: New HIV-1 RT Dual Inhibitors Active on Viral Replication.Molecules (Basel, Switzerland) · 2020Article
- Cutting into the Substrate Dominance: Pharmacophore and Structure-Based Approaches toward Inhibiting Human Immunodeficiency Virus Reverse Transcriptase-Associated Ribonuclease H.Accounts of chemical research · 2020Review
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14 authors at 7 institutions in 2 countries.
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Abstract
HIV-1 reverse transcriptase (RT)-associated RNase H activity is an essential function in viral genome retrotranscription. RNase H is a promising drug target for which no inhibitor is available for therapy. Diketo acid (DKA) derivatives are active site Mg(2+)-binding inhibitors of both HIV-1 RNase H and integrase (IN) activities. To investigate the DKA binding site of RNase H and the mechanism of action, six couples of ester and acid DKAs, derived from 6-[1-(4-fluorophenyl)methyl-1H-pyrrol-2-yl)]-2,4-dioxo-5-hexenoic acid ethyl ester (RDS1643), were synthesized and tested on both RNase H and IN functions. Most of the ester derivatives showed selectivity for HIV-1 RNase H versus IN, while acids inhibited both functions. Molecular modeling and site-directed mutagenesis studies on the RNase H domain demonstrated different binding poses for ester and acid DKAs and proved that DKAs interact with residues (R448, N474, Q475, Y501, and R557) involved not in the catalytic motif but in highly conserved portions of the RNase H primer grip motif. The ester derivative RDS1759 selectively inhibited RNase H activity and viral replication in the low micromolar range, making contacts with residues Q475, N474, and Y501. Quantitative PCR studies and fluorescence-activated cell sorting (FACS) analyses showed that RDS1759 selectively inhibited reverse transcription in cell-based assays. Overall, we provide the first demonstration that RNase H inhibition by DKAs is due not only to their chelating properties but also to specific interactions with highly conserved amino acid residues in the RNase H domain, leading to effective targeting of HIV retrotranscription in cells and hence offering important insights for the rational design of RNase H inhibitors.
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