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Assays for the Identification of Novel Antivirals against Bluetongue Virus
Published on: October 11, 2013
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Target-based discovery of a broad-spectrum flukicide
Daniel J Sprague1,2, Sang-Kyu Park1, Svenja Gramberg3
1Department of Cell Biology, Neurobiology, and Anatomy, Medical College of Wisconsin, Milwaukee, WI, USA.
Nature Structural & Molecular Biology
|May 7, 2024
Summary
A new drug, benzamidoquinazolinone (BZQ), effectively targets parasitic flatworms, including liver flukes resistant to praziquantel (PZQ). BZQ shows broad-spectrum activity against multiple fluke species by activating a conserved ion channel, offering a promising new flukicide.
Area of Science:
- Parasitology
- Drug Discovery
- Molecular Biology
Background:
- Parasitic flatworm infections cause significant global health issues.
- Praziquantel (PZQ) is a primary treatment for schistosomiasis but ineffective against Fasciola liver flukes.
- Resistance to PZQ in Fasciola is linked to a mutation in the TRPMPZQ ion channel.
Purpose of the Study:
- To identify novel compounds active against Fasciola TRPMPZQ.
- To develop a broad-spectrum flukicide effective against PZQ-resistant parasites.
Main Methods:
- Screening of benzamidoquinazolinone analogs against Fasciola TRPMPZQ.
- Structure-activity relationship studies to optimize lead compounds.
- Testing of the optimized compound against various parasitic fluke species and their TRPMPZQ orthologs.
Main Results:
- Benzamidoquinazolinone analogs were identified with activity against Fasciola TRPMPZQ.
- An optimized ligand, BZQ, induced paralysis and tegumental damage in liver flukes.
- BZQ demonstrated broad-spectrum activity against multiple fluke species, including Schistosoma mansoni, and conserved TRPMPZQ orthologs.
Conclusions:
- BZQ is a first-in-class, broad-spectrum flukicide.
- BZQ functions as a universal activator of trematode TRPMPZQ.
- BZQ offers a potential new therapeutic strategy for parasitic flatworm infections.
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