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Parkin negatively regulates the antiviral signaling pathway by targeting TRAF3 for degradation.

ABSTRACT: 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.

SUBMITTER: Xin D

PROVIDER: S-EPMC6078441 | biostudies-literature | 2018 Aug

REPOSITORIES: biostudies-literature

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Parkin negatively regulates the antiviral signaling pathway by targeting TRAF3 for degradation.

Xin Di D Gu Haiyan H Liu Enping E Sun Qinmiao Q

The Journal of biological chemistry 20180614 31

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 neg ...[more]

PMID: 29903906

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