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Related Experiment Video

Updated: Jun 5, 2026

Rapid Screening of HIV Reverse Transcriptase and Integrase Inhibitors
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Identification of HIV-1 Reverse Transcriptase-Associated Ribonuclease H Inhibitors Based on

Nhat Quang Tu1, Clémence Richetta1, Federica Putzu2

  • 1Laboratoire de Biologie et Pharmacologie Appliquée (LBPA), ENS-Paris-Saclay, Centre National de la Recherche Scientifique UMR 8113, Université Paris-Saclay, 91190 Gif-sur-Yvette, France.

Molecules (Basel, Switzerland)
|February 13, 2025
PubMed
Summary
This summary is machine-generated.

New antiviral compounds, 2-hydroxy-1,4-naphthoquinone Mannich bases, show potent activity against HIV-1 and SARS-CoV-2. Compounds 1e and 2k exhibit strong HIV-1-RNase H inhibition and antiviral effects, with compound 1e also inhibiting SARS-CoV-2 replication.

Keywords:
HIVRNase HSARS-CoV-2antiviral drugslawsonenaphthoquinone

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Area of Science:

  • Medicinal Chemistry
  • Virology
  • Molecular Biology

Background:

  • High demand exists for novel antiviral agents targeting critical viral enzymes.
  • HIV-1-RNase H is a key enzyme in the human immunodeficiency virus replication cycle.
  • 2-hydroxy-1,4-naphthoquinone Mannich bases represent a promising class of compounds for antiviral drug discovery.

Purpose of the Study:

  • To screen 2-hydroxy-1,4-naphthoquinone Mannich bases for HIV-1-RNase H inhibitory activity.
  • To evaluate the antiviral efficacy of active compounds against HIV-1 and SARS-CoV-2.
  • To elucidate the binding interactions of potent inhibitors with the HIV-1-RNase H active site using molecular docking.

Main Methods:

  • Synthesis and screening of 2-hydroxy-1,4-naphthoquinone Mannich bases.
  • In vitro HIV-1-RNase H enzyme inhibition assays.
  • Molecular docking simulations to analyze enzyme-inhibitor interactions.
  • Antiviral assays against HIV-1 and SARS-CoV-2.

Main Results:

  • Compounds 1e and 2k demonstrated significant HIV-1-RNase H inhibition (IC50 = 2.8-3.1 µM), outperforming known inhibitors.
  • Molecular docking revealed distinct binding modes and key pharmacophoric features for 1e and 2k.
  • Compound 2k exhibited potent antiviral activity against HIV-1 with low host cell toxicity.
  • Compound 1e showed inhibitory activity against SARS-CoV-2 replication (IC50 = 11.2 µM).

Conclusions:

  • Lawsone Mannich bases 1e and 2k are effective inhibitors of HIV-1-RNase H.
  • These compounds possess potential as antiviral agents against HIV-1 and SARS-CoV-2.
  • Further investigation into these Mannich bases could lead to the development of new antiviral therapies.