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Related Concept Videos

Inhibitors Of Virion Release01:25

Inhibitors Of Virion Release

Viral replication and dissemination rely on efficient mechanisms for host cell entry, genome replication, assembly, and release. Influenza viruses, such as types A and B, are negative-sense single-stranded RNA viruses with a segmented genome, that depend on two critical surface glycoproteins to carry out these processes: hemagglutinin (HA) and neuraminidase (NA). HA initiates infection by binding to sialic acid residues on the surface of host epithelial cells, facilitating receptor-mediated...
Inhibitors of Virion Maturation and Assembly01:19

Inhibitors of Virion Maturation and Assembly

As part of their replication cycle, certain viruses synthesize long precursor proteins called polyproteins within infected host cells. In human immunodeficiency virus (HIV), two major polyproteins are produced: Gag and Gag-Pol. The Gag polyprotein supplies the structural components of the virus, while Gag-Pol includes essential viral enzymes such as reverse transcriptase, integrase, and protease. After synthesis, these polyproteins move to the host cell membrane, where they assemble into an...
Inhibitors of Viral Protein Synthesis01:30

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Protein synthesis is indispensable for viral replication, as viruses lack the cellular machinery required for this process and must hijack the host's translational apparatus. In response, host cells deploy a critical innate immune defense involving interferons, specialized cytokines that play a central role in inhibiting viral propagation.Upon viral detection, infected cells release interferons that bind to receptors on adjacent uninfected cells, activating the JAK-STAT signaling pathway and...
Viruses with RNA Genomes01:29

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RNA viruses are categorized into positive-strand, negative-strand, or double-stranded groups based on their genomic structure and replication mechanisms. This classification dictates how they exploit host cellular machinery for protein synthesis and replication. Some RNA viruses also utilize reverse transcription as part of their life cycle, further diversifying their replication strategies.Positive-Strand RNA VirusesPositive-strand RNA viruses have genomes that function directly as messenger...
Antiviral Nucleoside Inhibitors01:22

Antiviral Nucleoside Inhibitors

Antiviral Nucleoside InhibitorsAntiviral nucleoside inhibitors are structural analogs of natural nucleosides that interfere with viral DNA or RNA synthesis. These compounds selectively target viral polymerases due to their resemblance to host nucleosides, thereby disrupting viral genome replication.Mechanism of Acyclovir ActionAcyclovir is a guanosine analog with a three-carbon acyclic side chain. It selectively targets herpes simplex virus type 1 (HSV-1), herpes simplex virus type 2 (HSV-2),...
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Immune Response Against Viral Pathogens

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Related Experiment Video

Updated: May 28, 2026

Early Viral Entry Assays for the Identification and Evaluation of Antiviral Compounds
09:29

Early Viral Entry Assays for the Identification and Evaluation of Antiviral Compounds

Published on: October 29, 2015

Exploring Hydroxytyrosol as a Promising Virucidal Agent: In Silico and In Vitro Insights into Enveloped Viruses.

Hanan El Ouadi1,2, Zineb Rhazzar3,4, Barbara Poddesu5

  • 1Mohammed VI Center of Research and Innovation (CM6RI), Rabat 10100, Morocco.

Current Issues in Molecular Biology
|May 27, 2026
PubMed
Summary

Synthetic hydroxytyrosol (HT) shows promising antiviral effects against enveloped viruses like SARS-CoV-2 and influenza. This compound demonstrated a dose-dependent virucidal activity in vitro, suggesting potential for developing new antiviral therapies.

Keywords:
antiviral in silico and in vitro approachesenveloped viruseshydroxytyrosol (HT)non-enveloped virusesvirucidal activity

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Last Updated: May 28, 2026

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Area of Science:

  • Virology
  • Pharmacology
  • Drug Discovery

Background:

  • Enveloped viruses pose significant public health challenges.
  • Hydroxytyrosol (HT), a natural phenolic compound, has known antioxidant and anti-inflammatory properties.
  • The potential antiviral activity of synthetic HT requires further investigation.

Purpose of the Study:

  • To evaluate the antiviral properties of synthetic hydroxytyrosol (HT) against enveloped and non-enveloped viruses.
  • To explore the molecular interactions and pharmacokinetic profile of HT.
  • To assess the virucidal efficacy of HT in vitro.

Main Methods:

  • In silico methods including molecular docking and ADMET analyses.
  • In vitro virucidal assays against a panel of enveloped and non-enveloped viruses.
  • Quantitative analysis of viral load reduction.

Main Results:

  • Molecular docking indicated favorable binding of HT with ceramide and sphingomyelin.
  • Predicted favorable pharmacokinetics and safety profiles for HT.
  • In vitro studies showed dose- and time-dependent virucidal activity of HT against enveloped viruses (HSV-1, WNV, SARS-CoV-2, Influenza A), with significant viral load reduction at 1000 µg/mL.
  • A 4.62 log10 unit decrease in measles virus titer was observed.
  • No activity was detected against non-enveloped bovine rotavirus.

Conclusions:

  • Hydroxytyrosol exhibits significant virucidal effects against enveloped viruses.
  • HT demonstrates potential as a lead compound for antiviral drug development.
  • Further research into HT as a virucidal agent is warranted, particularly for enveloped viral infections.