Swine Influenza Virus Induces RIPK1/DRP1-Mediated Interleukin-1 Beta Production
AbstractNucleotide-binding domain and leucine-rich repeat-containing protein 3 (NLRP3) inflammasome plays a pivotal role in modulating lung inflammation in response to the influenza A virus infection. We previously showed that the swine influenza virus (SIV) infection induced NLRP3 inflammasome-mediated IL-1β production in primary porcine alveolar macrophages (PAMs), and we were interested in examining the upstream signaling events that are involved in this process. Here, we report that the SIV-infection led to dynamin-related protein 1 (DRP1) phosphorylation at serine 579 and mitochondrial fission in PAMs. IL-1β production was dependent on the reactive oxygen species (ROS) production, and DRP1 phosphorylation resulted in the upregulation of the NLRP3 inflammasome. Furthermore, the requirement of the kinase activity of receptor-interacting protein kinase 1 (RIPK1) for the IL-1β production and RIPK1-DRP1 association suggested that RIPK1 is an upstream kinase for DRP1 phosphorylation. Our results reveal a critical role of the RIPK1/DRP1 signaling axis, whose activation leads to mitochondrial fission and ROS release, in modulating porcine NLRP3 inflammasome-mediated IL-1β production in SIV-infected PAMs. View Full-Text
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Park, H.-S.; Liu, G.; Liu, Q.; Zhou, Y. Swine Influenza Virus Induces RIPK1/DRP1-Mediated Interleukin-1 Beta Production. Viruses 2018, 10, 419.
Park H-S, Liu G, Liu Q, Zhou Y. Swine Influenza Virus Induces RIPK1/DRP1-Mediated Interleukin-1 Beta Production. Viruses. 2018; 10(8):419.Chicago/Turabian Style
Park, Hong-Su; Liu, Guanqun; Liu, Qiang; Zhou, Yan. 2018. "Swine Influenza Virus Induces RIPK1/DRP1-Mediated Interleukin-1 Beta Production." Viruses 10, no. 8: 419.
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