Venezuelan equine encephalitis virus non-structural protein 3 (nsP3) interacts with RNA helicases DDX1 and DDX3 in infected cells.

ABSTRACT: The mosquito-borne New World alphavirus, Venezuelan equine encephalitis virus (VEEV) is a Category B select agent with no approved vaccines or therapies to treat infected humans. Therefore it is imperative to identify novel targets that can be targeted for effective therapeutic intervention. We aimed to identify and validate interactions of VEEV nonstructural protein 3 (nsP3) with host proteins and determine the consequences of these interactions to viral multiplication. We used a HA tagged nsP3 infectious clone (rTC-83-nsP3-HA) to identify and validate two RNA helicases: DDX1 and DDX3 that interacted with VEEV-nsP3. In addition, DDX1 and DDX3 knockdown resulted in a decrease in infectious viral titers. Furthermore, we propose a functional model where the nsP3:DDX3 complex interacts with t

SUBMITTER: Amaya M 

PROVIDER: S-EPMC7113772 | biostudies-literature | 2016 Jul

REPOSITORIES: biostudies-literature