Long non-coding RNAs are associated with Seneca Valley virus infection

Sporadic outbreaks of Seneca Valley virus (SVV) have been detected in recent years causing huge economic losses to the pig industry. SVV infection can lead to redness and fever of the mouth, nose or hoof wall, ulcerative injury and inflammation in pigs. Although long non-coding RNAs (lncRNAs) have been shown to play an important role in antiviral and inflammatory regulation, how lncRNAs regulate and induce SVV infection inflammation remains unclear. Here, we found the differential expression of 1332 lncRNAs and 3299 mRNAs in SVV-infected ST cells using RNA-seq. Functional annotation analysis revealed that regulated transcripts are mainly involved in signaling pathways related to host immunity and inflammatory responses. We identified lnc-MSTRG.18940.1 as an important immune regulator in SVV infection. Lnc-MSTRG.18940.1 silencing specifically inhibited SVV replication and the production of inflammatory factors TNF-α, IL-1, IL-6, and IL-8. Our findings aid to a better understanding of host responses to SVV infection and provide new directions for understanding the potential association between lncRNAs and SVV pathogenesis.