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The Influence of the AgNPs Ligand on the Antiviral Activity Against HSV-2
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The Influence of the AgNPs Ligand on the Antiviral Activity Against HSV-2
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Journal Article
The Influence of the AgNPs Ligand on the Antiviral Activity Against HSV-2
2025
Overview
In this paper, we discuss the influence of the ligand type present on the surface of silver nanoparticles (AgNPs) on its affinity to the virus surface and its virucidal activity against herpes simplex virus type 2 (HSV-2). We selected four different ligands, which potentially exhibit different affinity to the HSV-2 virus surface and used them for functionalization of AgNPs: i) sodium citrate: ii) tannic acid; iii) 1-mercaptoundecane-1-sulfonate (MUS); iv) and poly(ethylene glycol) (PEG).
The antiviral activity was performed by in vitro Vero cell culture. Anti- inflammatory activity was performed by measurement of NF-κB activity. The antiviral potential of functional NPs in vivo was tested with HSV-2 model of genital infection. Cryo- transmission electron microscopy (cryo-TEM) was used to directly visualize the interactions or lack of interactions of functional NPs with the surface of the HSV-2 virus and to assess their affinity for the virus surface.
It was found that the surface chemistry of NPs plays a key role in modulation of its interaction with the HSV-2 virus. Two of the selected ligands (sodium citrate and PEG) were inert and show no affinity to the virus surface. AgNPs functionalized with heparan sulfate-mimic ligand (MUS) showed high affinity to the virus surface, and the appearance of these interactions resulted in virus deactivation in about 50%. In the case of silver nanoparticles functionalized with tannic acid, the assessment of the affinity is difficult to be resolved, mainly because TA-AgNPs exhibit very strong virucidal effect (~100%) and immediately after the contact of the HSV-2 virus with those NPs the virus structure is being destroyed.
The obtained results indicate that the high affinity of functional nanoparticles to the virus surface does not provide the high virucidal effectiveness. The most effective revealed to be TA-AgNPs which exhibit very strong virucidal effect against HSV-2 virus.
Publisher
Dove Medical Press Limited,Taylor & Francis Ltd,Dove,Dove Medical Press
Subject
/ Animals
/ Antiviral Agents - chemistry
/ Antiviral Agents - pharmacology
/ antiviral functional nanoparticles
/ cryo-tem
/ Female
/ Herpes Genitalis - drug therapy
/ Herpesvirus 2, Human - drug effects
/ interactions of nanoparticles with hsv-2
/ Ligands
/ Metal Nanoparticles - chemistry
/ Polyethylene Glycols - chemistry
/ Silver
/ Sodium
/ surface chemistry of antiviral nanoparticles
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