Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
6138403 | Virology | 2016 | 10 Pages |
Abstract
The nonstructural protein 1α (NSP1α) of porcine reproductive and respiratory syndrome virus (PRRSV) is a nucleo-cytoplasmic protein that suppresses the production of type I interferon (IFN). In this study, we investigated the relationship between the subcellular distribution of NSP1α and its inhibition of type I IFN. NSP1α was found to contain the classical nuclear export signal (NES) and NSP1α nuclear export was CRM-1-mediated. NSP1α was shuttling between the nucleus and cytoplasm. We also showed that the nuclear export of NSP1α was necessary for its ability for type I IFN inhibition. NSP1α was also found to interact with CBP, which implies a possible mechanism of CBP degradation by NSP1α. Taken together, our results describe a novel mechanism of PRRSV NSP1α for type I IFN inhibition and suppression of the host innate antiviral response.
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Authors
Zhi Chen, Shaoning Liu, Wenbo Sun, Lei Chen, Dongwan Yoo, Feng Li, Sufang Ren, Lihui Guo, Xiaoyan Cong, Jun Li, Shun Zhou, Jiaqiang Wu, Yijun Du, Jinbao Wang,