Inhibitory Effect of Alloferons in Combination with Human Lymphocytes on Human Herpesvirus 1 (HHV-1) Replication In Vitro
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Over the past two decades there has been intense study of compounds from vertebrates, microorganisms, plants, mushrooms, marine sponges, worms, etc. as well as insects in terms of their antiviral activity. Insects produce a variety of biologically active peptides. One of them is alloferon. The in vitro and in vivo experiments demonstrate that synthetic alloferon has an immunomodulatory properties. It was reported that alloferon and its analogues (alloferon I and II) have antimicrobial properties, as well. The aim of this study was to evaluate in vitro the effect of alloferon I and II, either alone or in combination with human lymphocytes, on human herpesvirus type 1 (HHV-1) McIntyre strain replication. On the base of results we can conclude that alloferon I and II inhibit the replication of HHV-1 McIntyre strain in HEp-2 cells. Enhanced antiviral activity was observed when infected cells were treated with alloferons and unstimulated or phytohemagglutinin PHA-stimulated lymphocytes simultaneously. After application of alloferons and PHA-stimulated lymphocytes to the HHV-1 infected HEp-2 culture, the mean HHV-1 titer reduction for alloferon and II, when used at the highest dose—400 µg/mL, were 3.69 and 3.27 log10/TCID50/mL, respectively.
KeywordsAlloferon Antiviral activity Herpesvirus HHV-1 Insect peptides Virus replication
This study was funded by The Medical University of Warsaw.
Compliance with Ethical Standards
Conflicts of interest
Anna Majewska, Witold Lasek, Mariola Kuczer, Grażyna Młynarczyk confirm that this article content has no conflicts of interest.
Human and Animal Rights and Informed Consent
This article does not contain studies with human or animal subjects performed by any of the authors that should be approved by Ethics Committee.
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