The viral capping enzyme nsP1: a novel target for the inhibition of chikungunya virus infection

The chikungunya virus (CHIKV) has become a substantial global health threat due to its massive reemergence, the considerable disease burden and the lack of vaccines or therapeutics. We discovered a novel class of small molecules ([1,2,3]triazolo[4,5-d]pyrimidin-7(6H)-ones) with potent in vitro activ...

Descripción completa

Detalles Bibliográficos
Autores: Delang, L., Li, C., Tas, A., Quérat, G., Albulescu, I. C., De Burghgraeve, T., Segura Guerrero, N. A., Gigante, Alba, Piorkowski, G., Decroly, E., Jochmans, D., Canard, B., Snijder, Eric J., Peréz-Pérez, María-Jesús, Hemert, M. J. van, Coutard, B., Leyssen, P., Neyts, Johan
Tipo de recurso: artículo
Fecha de publicación:2016
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/138627
Acceso en línea:http://hdl.handle.net/10261/138627
Access Level:acceso abierto
Descripción
Sumario:The chikungunya virus (CHIKV) has become a substantial global health threat due to its massive reemergence, the considerable disease burden and the lack of vaccines or therapeutics. We discovered a novel class of small molecules ([1,2,3]triazolo[4,5-d]pyrimidin-7(6H)-ones) with potent in vitro activity against CHIKV isolates from different geographical regions. Drug-resistant variants were selected and these carried a P34S substitution in non-structural protein 1 (nsP1), the main enzyme involved in alphavirus RNA capping. Biochemical assays using nsP1 of the related Venezuelan equine encephalitis virus revealed that the compounds specifically inhibit the guanylylation of nsP1. This is, to the best of our knowledge, the first report demonstrating that the alphavirus capping machinery is an excellent antiviral drug target. Considering the lack of options to treat CHIKV infections, this series of compounds with their unique (alphavirus-specific) target offers promise for the development of therapy for CHIKV infections.

Similares en LA Referencia