Porcine reproductive and respiratory syndrome virus up-regulates sialoadhesin via IFN-STAT signaling to facilitate its infection. (May 2020)

• Record Type: Journal Article
• Authors: Liu, Yingqi; Li, Rui; Zhang, Yuyang; Qiao, Songlin; Chen, Xin-xin; Zhang, Gaiping
• Is Part Of: Microbial pathogenesis. Volume 142(2020)
• Publication Date: 2020-05
• Subjects: PRRSV -- poSn -- Up-regulation -- Type I IFNs -- STAT; Pathogenic microorganisms -- Periodicals; Pathology, Molecular -- Periodicals; Communicable Diseases -- microbiology -- Periodicals; Communicable Diseases -- parasitology -- Periodicals; Micro-organismes pathogènes -- Périodiques; Pathologie moléculaire -- Périodiques; Electronic journals; 616.9041
• DOI: 10.1016/j.micpath.2020.104112
• Languages: English
• ISSNs: 0882-4010

Abstract

Abstract: Porcine reproductive and respiratory syndrome (PRRS) has caused huge economic losses to global swine industry. Porcine sialoadhesin (poSn) was previously reported to be a putative receptor for the causative agent, PRRS virus (PRRSV). In the current study, we first observed that PRRSV infection up-regulated expression of poSn in a dose- and time-dependent manner. Subsequently, we found that PRRSV-triggered transcription of type I interferons (IFNs) was involved in poSn up-regulation through the IFN-signal transducer and activator of transcription (STAT) signaling cascade. Interestingly, poSn up-regulation was shown to promote PRRSV infection during post-entry process. Taken together, this work deepens our understanding of PRRSV pathogenesis and provides a novel idea on its establishment of persistent infection, which will be interesting to unravel the detailed mechanisms in the future. Highlights: PRRSV infection up-regulated poSn expression. poSn up-regulation was induced by PRRSV-triggered type I IFNs. IFN-STAT signaling cascade was involved in poSn induction. poSn up-regulation contributed to PRRSV infection.