Skip to main content
U.S. Department of Energy
Office of Scientific and Technical Information

Discovery, X-ray Crystallography and Antiviral Activity of Allosteric Inhibitors of Flavivirus NS2B-NS3 Protease

Journal Article · · Journal of the American Chemical Society
DOI:https://doi.org/10.1021/jacs.9b02505· OSTI ID:1561316
Flaviviruses, including dengue, West Nile and recently emerged Zika virus, are important human pathogens, but there are no drugs to prevent or treat these viral infections. The highly conserved Flavivirus NS2B-NS3 protease is essential for viral replication and therefore a drug target. Compound screening followed by medicinal chemistry yielded a series of drug-like, broadly active inhibitors of Flavivirus proteases with IC50 as low as 120 nM. The inhibitor exhibited significant antiviral activities in cells (EC68: 300–600 nM) and in a mouse model of Zika virus infection. X-ray studies reveal that the inhibitors bind to an allosteric, mostly hydrophobic pocket of dengue NS3 and hold the protease in an open, catalytically inactive conformation. Finally, the inhibitors and their binding structures would be useful for rational drug development targeting Zika, dengue and other Flaviviruses.
Research Organization:
Argonne National Laboratory (ANL), Argonne, IL (United States).Advanced Photon Source (APS)
Sponsoring Organization:
National Institutes of Health (NIH); USDOD; USDOE
OSTI ID:
1561316
Journal Information:
Journal of the American Chemical Society, Journal Name: Journal of the American Chemical Society Journal Issue: 17 Vol. 141; ISSN 0002-7863
Publisher:
American Chemical Society (ACS)Copyright Statement
Country of Publication:
United States
Language:
ENGLISH

References (28)

Zika virus: An emerging flavivirus journal February 2017
Immunopathogenesis versus Protection in Dengue Virus Infections journal December 2013
Microcephaly in Brazil: how to interpret reported numbers? journal February 2016
Guillain-Barré Syndrome outbreak associated with Zika virus infection in French Polynesia: a case-control study journal April 2016
Zika virus induces inflammasome activation in the glial cell line U87-MG journal October 2017
A Mouse Model of Zika Virus Pathogenesis journal May 2016
Sexually acquired Zika virus: a systematic review journal May 2017
Zika Virus Protease: An Antiviral Drug Target journal October 2017
Clinical development and regulatory points for consideration for second-generation live attenuated dengue vaccines journal June 2018
3-(Piperidin-4-ylmethoxy)pyridine Containing Compounds Are Potent Inhibitors of Lysine Specific Demethylase 1 journal December 2015
Peptide–Boronic Acid Inhibitors of Flaviviral Proteases: Medicinal Chemistry and Structural Biology journal December 2016
Allosteric Inhibition of the NS2B-NS3 Protease from Dengue Virus journal October 2013
Biochemistry and Medicinal Chemistry of the Dengue Virus Protease journal September 2014
Binding of Low Molecular Weight Inhibitors Promotes Large Conformational Changes in the Dengue Virus NS2B-NS3 Protease: Fold Analysis by Pseudocontact Shifts journal November 2011
Existing drugs as broad-spectrum and potent inhibitors for Zika virus by targeting NS2B-NS3 interaction journal July 2017
Differential cell line susceptibility to the emerging Zika virus: implications for disease pathogenesis, non-vector-borne human transmission and animal reservoirs journal January 2016
Structural basis for the activation of flaviviral NS3 proteases from dengue and West Nile virus journal March 2006
NMR Analysis of a Novel Enzymatically Active Unlinked Dengue NS2B-NS3 Protease Complex journal May 2013
NMR study of complexes between low molecular mass inhibitors and the West Nile virus NS2B-NS3 protease journal August 2009
Crystal structure of Zika virus NS2B-NS3 protease in complex with a boronate inhibitor journal July 2016
Crystal structure of unlinked NS2B-NS3 protease from Zika virus journal December 2016
Ligand-Bound Structures of the Dengue Virus Protease Reveal the Active Conformation journal October 2011
Characterization of a Zika Virus Isolate from Colombia journal September 2016
A conformational switch high-throughput screening assay and allosteric inhibition of the flavivirus NS2B-NS3 protease journal May 2017
Possible Association Between Zika Virus Infection and Microcephaly — Brazil, 2015 journal January 2016
Drug Design For Flavivirus Proteases: What Are We Missing? journal May 2014
Prolonged Detection of Zika Virus in Vaginal Secretions and Whole Blood journal January 2017
Efficiency of Dengue Serotype 2 Virus Strains to Infect and Disseminate in Aedes Aegypti journal May 2003

Cited By (1)

Cis autocatalytic cleavage of glycine‐linked Zika virus NS2B‐NS3 protease constructs journal June 2019

Similar Records

Identification of novel small molecule inhibitors against NS2B/NS3 serine protease from Zika virus
Journal Article · Sun Dec 25 19:00:00 EST 2016 · Antiviral Research · OSTI ID:1352271

Purification and crystallization of dengue and West Nile virus NS2B–NS3 complexes
Journal Article · Tue Jan 31 23:00:00 EST 2006 · Acta Crystallographica. Section F · OSTI ID:22356260

Structural Evidence for Regulation and Specificity of Flaviviral Proteases and Evolution of the Flaviviridae Fold
Journal Article · Sun Dec 31 23:00:00 EST 2006 · Protein Science · OSTI ID:929907