Abstract:
:The NS2B/NS3 serine proteases of the Zika and Dengue flaviviruses are attractive targets for the development of antiviral drugs. We report the synthesis and evaluation of a new, proline-based compound class that displays allosteric inhibition of both proteases. The structural features relevant for protease binding and inhibition were determined to establish them as new lead compounds for flaviviral inhibitors. Based on our structure-activity relationship studies, the molecules were further optimized, leading to inhibitors with submicromolar IC50 values and improved lipophilic ligand efficiency. The allosteric binding site in the proteases was probed using mutagenesis and covalent modification of the obtained cysteine mutants with maleimides, followed by computational elucidation of the possible binding modes. In infected cells, antiviral activity against Dengue virus serotype 2 using prodrugs of the inhibitors was observed. In summary, a novel inhibitor scaffold targeting an allosteric site shared between flaviviral NS2B/NS3 proteases is presented whose efficacy is demonstrated in vitro and in cellulo.
journal_name
J Med Chemjournal_title
Journal of medicinal chemistryauthors
Millies B,von Hammerstein F,Gellert A,Hammerschmidt S,Barthels F,Göppel U,Immerheiser M,Elgner F,Jung N,Basic M,Kersten C,Kiefer W,Bodem J,Hildt E,Windbergs M,Hellmich UA,Schirmeister Tdoi
10.1021/acs.jmedchem.9b01697subject
Has Abstractpub_date
2019-12-26 00:00:00pages
11359-11382issue
24eissn
0022-2623issn
1520-4804journal_volume
62pub_type
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