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Published on: October 26, 2018
Inhibition of adenovirus replication by a trisubstituted piperazin-2-one derivative
Javier Sanchez-Cespedes1, Crystal L Moyer1, Landon R Whitby2
1Department of Immunology and Microbial Science, The Scripps Research Institute, 10550 N. Torrey Pines Road, Mailcode IMM4, La Jolla, CA 92037, USA.
Insights
Researchers identified a novel compound, 15D8, that effectively inhibits adenovirus (Ad) DNA replication. This discovery offers a promising new antiviral strategy for disseminated Ad infections, particularly in immunocompromised patients.
Area of Science:
- Virology
- Infectious Diseases
- Drug Discovery
Background:
- Disseminated adenovirus (Ad) infections are increasing, especially in immunocompromised individuals like transplant recipients.
- High morbidity and mortality are associated with Ad infections in these vulnerable populations.
- There are currently no approved Ad-specific antiviral drugs available for clinical use.
Purpose of the Study:
- To identify novel small molecule compounds that can inhibit adenovirus infection.
- To find potential therapeutic candidates for treating disseminated Ad infections.
Main Methods:
- High-throughput screening (HTS) of over 25,000 synthetic small molecule libraries.
- Antiviral activity and cytotoxicity assays were performed on identified compounds.
- Mechanism of action studies focused on viral DNA replication.
Main Results:
- A trisubstituted piperazin-2-one derivative, designated 15D8, was identified as a potent inhibitor of Ad infection.
- Compound 15D8 demonstrated significant antiviral activity at low micromolar concentrations with minimal cytotoxicity.
- 15D8 was found to selectively inhibit Ad DNA replication within the host cell nucleus.
Conclusions:
- Compound 15D8 represents a promising lead for the development of a new class of antiviral agents against adenovirus.
- This compound has the potential to address the unmet medical need for effective treatments against disseminated Ad infections.
Abstract:
The number of disseminated adenovirus (Ad) infections continues to increase mostly due to the growing use of immunosuppressive treatments. Recipients of solid organ or hematopoietic stem cell transplants, mainly in pediatric units, exhibit a high morbidity and mortality due to these infections. Unfortunately, there are no Ad-specific antiviral drugs currently approved for medical use. To address this situation, we used high-throughput screening (HTS) of synthetic small molecule libraries to identify compounds that restrict Ad infection. Among the more than 25,000 compounds screened, we identified a hit compound that significantly inhibited Ad infection. The compound (15D8) is a trisubstituted piperazin-2-one derivative that showed substantial antiviral activity with little or no cytotoxicity at low micromolar concentrations. Compound 15D8 selectively inhibits Ad DNA replication in the nucleus, providing a potential candidate for the development of a new class of antiviral compounds to treat Ad infections.
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