AlphaB-crystallin promotes porcine circovirus type 2 replication in a cell proliferation-dependent manner.

Virus Research
Rongdi LuoSong Gao

Abstract

Porcine circovirus type 2 (PCV2) is the primary causative agent of postweaning multisystemic wasting syndrome (PMWS) and causes heavy economic losses to the porcine industry worldwide. In this study, PK-15 cells were infected with PCV2 for 48 h, then harvested and subjected to label-free quantitative proteomic mass spectrometry. In total, 1212 proteins were differentially expressed in PCV2-infected cells compared with mock-infected cells, including 796 upregulated and 416 downregulated proteins. Gene ontology analysis showed that these differentially expressed proteins were involved in biological processes, cellular components and molecular functions, and these categories included cellular processes, environmental information processing, genetic information processing, disease, metabolism, and body systems. Enrichment analysis of the KEGG pathway showed that innate immune responses were significantly enriched. AlphaB-crystallin (CRYAB) interacts with desmin and cytoplasmic actin to prevent protein misfolding and aggregation, helping to maintain cytoskeletal integrity and promoting cell proliferation. In this study, CRYAB was found to effect the replication of PCV2, as verified by qRT-PCR, TCID50 determination and western blot a...Continue Reading

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