Parkin negatively regulates the antiviral signaling pathway by targeting TRAF3 for degradation.
Chronic neuroinflammation is a characteristic of Parkinson's disease (PD). Previous investigations have shown that Parkin gene mutations are related to the early-onset recessive form of PD and isolated juvenile-onset PD. Further, Parkin plays important roles in mitochondrial quality control and cytokine-induced cell death. However, whether Parkin regulates other cellular events ... is still largely unknown. In this study, we performed overexpression and knockout experiments and found that Parkin negatively regulates antiviral immune responses against RNA and DNA viruses. Mechanistically, we show that Parkin interacts with tumor necrosis factor receptor-associated factor 3 (TRAF3) to regulate stability of TRAF3 protein by promoting Lys48-linked ubiquitination. Our findings suggest that Parkin plays a novel role in innate immune signaling by targeting TRAF3 for degradation and maintaining the balance of innate antiviral immunity.
Mesh Terms:
Animals, Bone Marrow Cells, Cercopithecus aethiops, Fibroblasts, Gene Expression Regulation, HEK293 Cells, HeLa Cells, Herpesvirus 1, Human, Humans, Immunity, Innate, Mice, Mitochondria, Plasmids, Primary Cell Culture, Proteolysis, Sendai virus, Signal Transduction, TNF Receptor-Associated Factor 3, Transduction, Genetic, Ubiquitin-Protein Ligases, Ubiquitination, Vero Cells, Vesiculovirus
Animals, Bone Marrow Cells, Cercopithecus aethiops, Fibroblasts, Gene Expression Regulation, HEK293 Cells, HeLa Cells, Herpesvirus 1, Human, Humans, Immunity, Innate, Mice, Mitochondria, Plasmids, Primary Cell Culture, Proteolysis, Sendai virus, Signal Transduction, TNF Receptor-Associated Factor 3, Transduction, Genetic, Ubiquitin-Protein Ligases, Ubiquitination, Vero Cells, Vesiculovirus
J. Biol. Chem.
Date: Dec. 03, 2017
PubMed ID: 29903906
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