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Antiviral research

Antiviral research

IF: 4.5
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A sulfonamide chalcone inhibited dengue virus with a potential target at the SAM-binding site of viral methyltransferase.

Published:13 November 2023 DOI: 10.1016/j.antiviral.2023.105753 PMID: 37967754
Van Cao , I Putu Sukanadi , Naphat Loeanurit , Aphinya Suroengrit , Wattamon Paunrat , Vipanee Vibulakhaopan , Kowit Hengphasatporn , Yasuteru Shigeta , Warinthorn Chavasiri , Siwaporn Boonyasuppayakorn

Abstract

Dengue infection is a global health problem as climate change facilitates the spread of mosquito vectors. Infected patients could progress to severe plasma leakage and hemorrhagic shock, where current standard treatment remains supportive. Previous reports suggested that several flavonoid derivatives inhibited mosquito-borne flaviviruses. This work aimed to explore sulfonamide chalcone derivatives as dengue inhibitors and to identify molecular targets. We initially screened 27 sulfonamide chalcones using cell-based antiviral and cytotoxic screenings. Two potential compounds, SC22 and SC27, were identified with DENV1-4?EC50s in the range of 0.71–0.94 and 3.15–4.46?μM, and CC50s at 14.63 and 31.02?μM, respectively. The compounds did not show any elevation in ALT or Cr in C57BL/6 mice on the 1st, 3rd, and 7th days after being administered intraperitoneally with 50?mg/kg SC22 or SC27 in a single dose. Moreover, the SAM-binding site of NS5 methyltransferase was a potential target of SC27 identified by computational and enzyme-based assays. The main target of SC22 was in a late stage of viral replication, but the exact target molecule had yet to be identified. In summary, a sulfonamide chalcone, SC27, was a potential DENV inhibitor that targeted viral methyltransferase. Further investigation should be the study of the structure-activity relationship of SC27 derivatives for higher potency and lower toxicity.

Substances (4)

Materials
Procduct Name CAS Molecular Formula Supplier Price
Ribavirin 36791-04-5 C8H12N4O5 752 suppliers $5.00-$3050.00
Ribavirin 36791-04-5 C8H12N4O5 752 suppliers $5.00-$3050.00
Ribavirin 36791-04-5 C8H12N4O5 752 suppliers $5.00-$3050.00
Ribavirin 36791-04-5 C8H12N4O5 752 suppliers $5.00-$3050.00

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