Abstract
An antiviral innate immune response involves induction of type I interferons (IFNs) and their subsequent autocrine and paracrine actions, but the underlying regulatory mechanisms are incompletely understood. Here we report that CYLD, a deubiquitinase that specifically digests lysine 63-linked ubiquitin chains, is required for antiviral host defense. Loss of CYLD renders mice considerably more susceptible to infection by vesicular stomatitis virus (VSV). Consistently, CYLD-deficient dendritic cells are more sensitive to VSV infection. This functional defect was not due to lack of type I IFN production but rather because of attenuated IFN receptor signaling. In the absence of CYLD, IFN-β is ineffective in the induction of antiviral genes and protection of cells from viral infection. These findings establish CYLD as a novel regulator of antiviral innate immunity and suggest a role for CYLD in regulating IFN receptor signaling.
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Acknowledgements
We thank Glen Barber for VSV strain. This study was supported by the National Institutes of Health grant AI064639.
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Zhang, M., Lee, A., Wu, X. et al. Regulation of antiviral innate immunity by deubiquitinase CYLD. Cell Mol Immunol 8, 502–504 (2011). https://doi.org/10.1038/cmi.2011.42
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DOI: https://doi.org/10.1038/cmi.2011.42
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