Characterization and structure-activity relationship analysis of a class of antiviral compounds that directly bind dengue virus capsid protein and are incorporated into virions.
Antiviral Res
; 155: 12-19, 2018 07.
Article
en En
| MEDLINE
| ID: mdl-29709563
ABSTRACT
Dengue viruses (DENV) are endemic pathogens of tropical and subtropical regions and cause significant morbidity and mortality worldwide. Although a partially effective vaccine is in use in several countries in which DENV are endemic, no antiviral therapeutics are approved for combating DENV-associated disease. Herein, we report the characterization of novel small molecule inhibitors of DENV replication, VGTI-A3 and VGTI-A3-03, as well as structure-activity relationship analysis of the molecules using a panel of chemical analogs. VGTI-A3 and VGTI-A3-03 are highly virus-specific, with greatest activity against DENV serotype 2. Further analysis revealed that treatment of infected cells with VGTI-A3-03 does not inhibit viral RNA replication or secretion of viral particles. Rather, the infectivity of secreted particles from A3-03 treated cells is significantly diminished compared to particles secreted from control cells. Elicitation of VGTI-A3-03-resistant mutants demonstrated a clear binding pocket in the capsid molecule at the dimerization interface. Additionally, we show that VGTI-A3-03 is incorporated into virus particles released from infected cells. In summary, these data provide detailed analysis of a potentially useful class of anti-DENV inhibitors and further identify a region of the viral capsid protein as a druggable target for other therapeutic approaches.
Texto completo:
1
Base de datos:
MEDLINE
Asunto principal:
Antivirales
/
Virión
/
Virus del Dengue
/
Proteínas de la Cápside
Límite:
Humans
Idioma:
En
Revista:
Antiviral Res
Año:
2018
Tipo del documento:
Article
País de afiliación:
Estados Unidos