ArticleImmunoHorizons2025
Disrupting the TRAF1/cIAP2 interaction attenuates inflammasome activation and protects against monosodium urate crystal-induced arthritis.
Article in ImmunoHorizons, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Who cites it
1 citing paper in PubMed.
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5 authors.
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Abstract
Tumor necrosis factor receptor (TNFR)-associated factor 1 (TRAF1) regulates NF-κB signaling and is implicated in chronic autoimmune diseases characterized by persistent inflammation. In addition to its role in restraining linear ubiquitin assembly complex-mediated linear ubiquitination of apoptosis-associated speck-like protein containing a caspase recruitment domain (ASC) to limit inflammasome activation, TRAF1 also stabilizes cellular inhibitor of apoptosis protein 2 (cIAP2) by protecting it from degradation. Notably, cIAP2 promotes inflammasome activation via K63-linked polyubiquitination of caspase-1. Here, we show that disrupting the TRAF1/cIAP2 interaction (V203A in humans; V196A in mice) reduces inflammasome activation. TRAF1V203A THP-1 cells exhibit diminished caspase-1 ubiquitination, leading to impaired IL-1β secretion. Similarly, TRAF1V196A mice produce significantly lower IL-1β levels after LPS challenge. In a monosodium urate crystal-induced arthritis model, TRAF1V196A mice show reduced joint inflammation, decreased synovial immune cell infiltration, and attenuated disease severity. These findings establish the TRAF1/cIAP2 axis as a key regulator of inflammasome activation and a potential therapeutic target for inflammasome-driven diseases such as gout.
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