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Updated: Aug 9, 2026

High-throughput Screening for Broad-spectrum Chemical Inhibitors of RNA Viruses
Published on: May 5, 2014
2001 ASPET Otto Krayer Award Lecture. Molecular targets for antiviral agents
1Rega Institute for Medical Research, Katholieke Universiteit Leuven, Minderbroedersstraat 10, B-3000 Leuven, Belgium. erik.declercq@rega.kuleuven.ac.be
Abstract:
There are a number of virus-specific processes within the virus replicative cycle or virus-infected cell that have proven to be attractive targets for chemotherapeutic intervention, i.e., virus adsorption and entry into the cells, reverse (RNA --> DNA) transcription, viral DNA polymerization, and cellular enzymatic reactions that are associated with viral DNA and RNA synthesis and viral mRNA maturation (i.e., methylation). A variety of chemotherapeutic agents, both nucleoside (and nucleotide) and non-nucleoside entities, have been identified that specifically interact with these viral targets, that selectively inhibit virus replication, and that are either used or considered for clinical use in the treatment of virus infections in humans. Their indications encompass virtually all major human viral pathogens, including human immunodeficiency virus (HIV), hepatitis B virus (HBV), herpes simplex virus (HSV), varicella-zoster virus (VZV), cytomegalovirus (CMV), human papilloma virus (HPV), orthomyxoviruses (influenza A and B), paramyxoviruses [e.g., respiratory syncytial virus (RSV)] and hemorrhagic fever viruses (such as Ebola virus).
Insights
Antiviral chemotherapeutics target specific viral processes like replication and entry. These drugs, including nucleoside and non-nucleoside agents, are crucial for treating diverse human viral infections.
Area of Science:
- Virology
- Medical Chemistry
Background:
- Virus replication involves specific cellular and viral processes.
- These processes, including adsorption, entry, reverse transcription, and DNA polymerization, are targets for antiviral drugs.
Discussion:
- Chemotherapeutic agents, both nucleoside and non-nucleoside, are designed to inhibit viral replication.
- These agents selectively target viral enzymes and cellular processes crucial for viral proliferation.
Key Insights:
- Identification of nucleoside and non-nucleoside drugs that inhibit viral targets.
- Development of antiviral therapies for a broad spectrum of human viral pathogens.
Outlook:
- Clinical use of antiviral agents for treating infections caused by HIV, HBV, HSV, VZV, CMV, HPV, influenza, RSV, and Ebola virus.
- Continued research into novel chemotherapeutic interventions for viral diseases.
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