Journal
VIRUS RESEARCH
Volume 222, Issue -, Pages 48-52Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.virusres.2016.06.004
Keywords
NS1; B19 virus; Type I IFN signaling
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Funding
- Natural Science Foundation of China (NSFC) [81471956, 91442128]
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B19 virus is a non-enveloped DNA virus and belongs to the family of parvoviridae. There are two large open reading frames (ORFs), nonstructural protein (NS1) and two capsid proteins (VP1 and VP2). Host innate immune responses form the first line of defense against many pathogen invasion. How B19 virus, especially its encoded viral proteins interacts with host innate immune system remains unknown. In this study we aim to investigate the effect of NS1 on the host innate immune response and exogenous type I IFN signaling. Here we found that the type I IFN can be stimulated by NS1. Interestingly, NS1 also plays an important role in inhibiting the exogenous type I IFN signaling at p-STAT1, ISRE and ISGs levels. We concluded that NS1 may play pivotal role in evading the host immune surveillance. Our data shed novel light on the pathogenesis of B19 viral infection and virus evasion strategies. (C) 2016 Elsevier B.V. All rights reserved.
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