Journal
REVIEWS IN MEDICAL VIROLOGY
Volume 25, Issue 5, Pages 286-299Publisher
WILEY
DOI: 10.1002/rmv.1845
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Funding
- Comision Nacional de Investigacion en Ciencia y Tecnologia (Conicyt) through Fondecyt Program [N11140502, N1120577, N11121339]
- International Cooperation Program [DRI USA2013-0005]
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Asp-Glu-Ala-Asp (DEAD)-box polypeptide 3, or DDX3, belongs to the DEAD-box family of ATP-dependent RNA helicases and is known to play different roles in RNA metabolism ranging from transcription to nuclear export, translation, and assembly of stress granules. In addition, there is growing evidence that DDX3 is a component of the innate immune response against viral infections. As such, DDX3 has been shown to play roles both upstream and downstream of I-kappa beta kinase epsilon (IKK epsilon)/TANK-binding kinase 1, leading to IFN-beta production. Interestingly, several RNA viruses, including human threats such as HIV-1 and hepatitis C virus, hijack DDX3 to accomplish various steps of their replication cycles. Thus, it seems that viruses have evolved to exploit DDX3's functions while threatening the innate immune response. Understanding this interesting dichotomy in DDX3 function will help us not only to improve our knowledge of virus-host interactions but also to develop novel antiviral drugs targeting the multifaceted roles of DDX3 in viral replication. Copyright (C) 2015 John Wiley & Sons, Ltd.
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