Finding small molecules with pan-serotype activity to target Dengue non-structural protein 1

Area of Science:

• Virology
• Drug Discovery
• Structural Biology

Background:

• Dengue virus (DENV), a mosquito-borne flavivirus, causes Dengue fever and severe Dengue.
• DENV has four serotypes, each with varying pathogenicity and genotypes.
• The DENV non-structural protein 1 (NS1) is crucial for viral replication and pathogenesis, and serves as a diagnostic marker.

Purpose of the Study:

• To explore small molecule drugs targeting the NS1 protein of all four DENV serotypes.
• To identify common plant flavonoids with high binding affinities to DENV NS1 across serotypes.

Main Methods:

• Modeled NS1 structures for DENV serotypes 1, 3, and 4 based on the DENV 2 NS1 crystal structure.
• Performed virtual screening of plant flavonoids against DENV NS1 active sites.
• Analyzed top-scoring molecules for commonality and comparable binding affinities across all four serotypes.
• Conducted ADMET profiling on promising flavonoid candidates.

Main Results:

• Identified potential plant flavonoids that bind to the NS1 protein of all four DENV serotypes.
• Selected common flavonoids with comparable binding affinities across serotypes.
• Filtered candidates using ADMET profiling for drug-likeness.

Conclusions:

• Plant flavonoids show promise as broad-spectrum therapeutic agents against DENV NS1.
• This research provides a foundation for developing novel anti-DENV drugs targeting NS1.
• Further studies are warranted to validate these findings and advance drug development.