ArticlebioRxiv : the preprint server for biology2026
Loss of E3 ligase Ube4A Disrupts Colon Homeostasis and Accelerates Experimental Colitis via Altered Lipid Handling.
Article in bioRxiv : the preprint server for biology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Background: Ubiquitin-dependent signaling is essential for maintaining intestinal homeostasis and its dysregulation contributes to chronic intestinal disorders, such as Inflammatory Bowel Disease (IBD). Ube4A is a U-box E3/E4 ubiquitin ligase involved in lipid metabolism and insulin signaling in metabolic tissues. Autoantibodies against Ube4A have been identified in patients with IBD and are associated with disease long-term complications. Despite these clinical associations, the physiological role of Ube4A in the gastrointestinal tract remains unknown. This study aimed to define the function of Ube4A in the colon and determine how its loss influences susceptibility to experimental colitis. Methods: Results: Conclusions: Ube4A is a previously unrecognized regulator of colon homeostasis. Its loss induces existing epithelial stress and metabolic reprogramming that sensitize the colon to exaggerated inflammatory responses during injury such as experimental colitis.
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