Project description:Small ruminant morbillivirus (SRMV), formerly named Peste-des-petits ruminanats virus (PPRV), belongs to the genus Morbillivirus genus in the family Paramyxoviridae and leads to a highly contagious disease in small ruminants, especially goats and sheep. Lysine succinylation is a newly identified and conserved modification and plays important roles in host cells response to pathogen infection. Herein, we present the comprehensive analysis of the succinylome of SRMV-infected Vero cell using quantitative proteomics. Overall, we identified 875 succinylated proteins with 2840 succinylation sites. Comparative analysis revealed that 139 down-regulated succinylated proteins with 228 succinylation sites and 38 up-regulated succinylated proteins with 44 succinylation sites were significant succinylated in response to SRMV infection, seven lysine succinylation motifs were identified. Bioinformatics analysis showed that the succinalated proteins mainly participated in in cellular respiration and biosynthetic process. Protein-protein interaction networks of the identified proteins provided further evidence that a variety of ATP synthase subunits and carbon metabolism were modulated by succinylation, the overlapped proteins between succinylation and acetylation are involved in glyoxylate and dicarboxylate metabolism. In summary, this is the first study of the succinylome in SRMV infection, lysine acetylation may have a more important effect than succinylation in PPRV infection. It provides a novel view on investigating the infection mechanism of SRMV.
Project description:Peste des petits ruminants virus (PPRV) belongs to the genus Morbillivirus that causes an acute and highly contagious disease in goats and sheep. Virus infection can trigger the change in the cellular microRNA (miRNA) expression profile, which play important post-transcriptional regulatory roles in gene expression and can greatly influence viral replication and pathogenesis. Here, we employed deep sequencing technology to determine cellular miRNAs expression profile in goat peripheral blood mononuclear cells (PBMCs) infected with Nigeria 75/1 vaccine virus, a widely used vaccine strain for mass vaccination programs against Peste des petits ruminants (PPR). Expression analysis demonstrated that PPRV infection can elicit 316 significantly differentially expressed (DE) miRNAs including 103 known and 213 novel miRNAs candidates in infected PBMCs at 24 hours post-infection as compared with mock control. Target prediction and functional analysis of these DEmiRNAs revealed significant enrichment for several signaling pathways including TLR signaling pathways, PI3K-Akt, endocytosis, viral carcinogenesis, and JAK-STAT signaling pathways. This study provides a valuable basis for further investigation on the roles of miRNAs in PPRV replication and pathogenesis.