A new antiviral screening method that simultaneously detects viral replication, cell viability, and cell toxicity

Area of Science:

• Phytochemistry
• Virology
• Drug Discovery

Background:

• Viruses cause numerous human illnesses, but effective antiviral treatments are limited, necessitating the development of new therapeutic agents.
• Plants possess natural defense compounds against pathogens, including viruses, presenting a potential source for novel antiviral drug discovery.
• Herpes simplex virus type-1 (HSV-1) is a significant human pathogen, and effective treatments are crucial.

Purpose of the Study:

• To develop a rapid and reliable screening method for identifying plant extracts with specific antiviral activity against HSV-1.
• To differentiate between virus-induced host cell death and plant extract toxicity.
• To screen a diverse collection of plant extracts for potential antiviral properties.

Main Methods:

• Development of a novel assay to distinguish antiviral activity from cytotoxicity.
• Screening of 80 plant and plant organ extracts using the developed method.
• Evaluation of extracts for specific inhibition of HSV-1 growth.

Main Results:

• Six plant extracts demonstrated specific inhibitory activity against HSV-1 growth.
• Two instances revealed similar antiviral activity from different organs of the same plant species.
• The screening method proved effective in rapidly and accurately assessing antiviral potential.

Conclusions:

• The developed screening method is efficient for identifying antiviral substances from plant extracts.
• Plants represent a promising resource for discovering novel antiviral compounds, including those targeting HSV-1.
• This approach can be applied to screen for antiviral agents against HSV-1 and other viruses.