例如:"lncRNA", "apoptosis", "WRKY"

K63 ubiquitin chains target NLRP3 inflammasome for autophagic degradation in ox-LDL-stimulated THP-1 macrophages.

Aging (Albany NY). 2020 Jan 29;12(2):1747-1759. Epub 2020 Jan 29
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摘要


Inflammation, especially involving the NLRP3 inflammasome, is critical to atherosclerotic plaque formation. Enhanced autophagy can inhibit the development of atherosclerosis, and recent studies have revealed that NLRP3 inflammasome can be degraded by autophagy in atherosclerosis. In the present study, we established a foam-cell model to investigate the impact of oxidized low density lipoproteins (ox-LDLs) on autophagy and the inflammasome in atherosclerosis-related inflammation. We observed that ox-LDLs activated NLRP3 inflammasomes in macrophages and restricted autophagy in a time-and dose-dependent manner. We further observed through immunoprecipitation and siRNA knockdown that autophagic degradation of the NLRP3 inflammasome is dependent on K63 polyubiquitation of its NLRP3 subunit and subsequent binding by the adaptor protein p62. Our findings uncover a mechanism by which autophagy inhibits inflammation in atherosclerosis and the role of K63 in that process.

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原始数据


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