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Dual targeting of dengue virus virions and NS1 protein with the heparan sulfate mimic PG545.
Modhiran, Naphak; Gandhi, Neha S; Wimmer, Norbert; Cheung, Stacey; Stacey, Katryn; Young, Paul R; Ferro, Vito; Watterson, Daniel.
Affiliation
  • Modhiran N; School of Chemistry and Molecular Bioscience, The University of Queensland, Brisbane, Australia; Australian Infectious Diseases Research Centre, The University of Queensland, Brisbane, Australia.
  • Gandhi NS; School of Mathematical Sciences and Institute of Health and Biomedical Innovation, Queensland University of Technology, Brisbane, Australia.
  • Wimmer N; School of Chemistry and Molecular Bioscience, The University of Queensland, Brisbane, Australia; Australian Infectious Diseases Research Centre, The University of Queensland, Brisbane, Australia.
  • Cheung S; School of Chemistry and Molecular Bioscience, The University of Queensland, Brisbane, Australia; Australian Infectious Diseases Research Centre, The University of Queensland, Brisbane, Australia.
  • Stacey K; School of Chemistry and Molecular Bioscience, The University of Queensland, Brisbane, Australia; Australian Infectious Diseases Research Centre, The University of Queensland, Brisbane, Australia.
  • Young PR; School of Chemistry and Molecular Bioscience, The University of Queensland, Brisbane, Australia; Australian Infectious Diseases Research Centre, The University of Queensland, Brisbane, Australia.
  • Ferro V; School of Chemistry and Molecular Bioscience, The University of Queensland, Brisbane, Australia; Australian Infectious Diseases Research Centre, The University of Queensland, Brisbane, Australia. Electronic address: v.ferro@uq.edu.au.
  • Watterson D; School of Chemistry and Molecular Bioscience, The University of Queensland, Brisbane, Australia; Australian Infectious Diseases Research Centre, The University of Queensland, Brisbane, Australia. Electronic address: d.watterson@uq.edu.au.
Antiviral Res ; 168: 121-127, 2019 08.
Article in En | MEDLINE | ID: mdl-31085206
Dengue virus (DENV) is the most prevalent mosquito-borne flavivirus that infects humans. At present, there are no specific antiviral drugs to treat DENV infection and vaccine development has met with challenges. DENV encodes two glycosaminoglycan (GAG) binding proteins; Envelope (E) and non-structural protein 1 (NS1). While previous work has validated the use of GAG analogues as inhibitors of E mediated virus-cell attachment, their potential for antiviral intervention in NS1 protein toxicity has not yet been explored. Here, we investigate the potential of the heparan sulfate mimetic PG545 as a dual purpose compound to target both DENV virion infectivity and NS1 function. In comparison to a non-sulfated analogue, we show that PG545 potently inhibits DENV infectivity with no cytotoxic effect. Against NS1, PG545 completely blocks the induction of cellular activation and abolishes NS1-mediated disruption of endothelial monolayer integrity. Furthermore, PG545 treatment moderately improves survival from lethal DENV challenge in a murine model. At peak disease, PG545-treated mice have lower viremia, circulating NS1 and serum TNF-α. Consistent with anti-NS1 activity, PG545 treatment also reduces systemic vascular leakage caused by DENV infection in vivo. Taken together, these findings demonstrate that the dual targeting of DENV virions and NS1 using GAG analogues offers a new avenue for DENV drug development.
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Full text: 1 Collection: 01-internacional Health context: 1_ASSA2030 / 2_ODS3 / 3_ND Database: MEDLINE Main subject: Antiviral Agents / Saponins / Virion / Viral Nonstructural Proteins / Dengue Virus Type of study: Prognostic_studies Limits: Animals / Humans / Male Language: En Journal: Antiviral Res Year: 2019 Document type: Article

Full text: 1 Collection: 01-internacional Health context: 1_ASSA2030 / 2_ODS3 / 3_ND Database: MEDLINE Main subject: Antiviral Agents / Saponins / Virion / Viral Nonstructural Proteins / Dengue Virus Type of study: Prognostic_studies Limits: Animals / Humans / Male Language: En Journal: Antiviral Res Year: 2019 Document type: Article