ArticleAdvanced science (Weinheim, Baden-Wurttemberg, Germany)2026
Integrin β3 Orchestrates Hepatic Steatosis via a Novel CD36-Dependent Lipid Uptake Complex.
Article in Advanced science (Weinheim, Baden-Wurttemberg, Germany), 2026. 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.
- Integrin β3 Orchestrates Hepatic Steatosis via a Novel CD36-Dependent Lipid Uptake Complex.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2026Article
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14 authors.
Funding
Abstract
In metabolic dysfunction-related steatohepatitis (MASH), ITGB3 promotes hepatic fibrosis via activating hepatic stellate cells, but whether it directly regulates hepatic lipid metabolism through membrane-scaffolding function and the underlying mechanisms remain unclear. Transcriptomic analyses of human and murine models of MASH revealed consistent upregulation of ITGB3 in hepatocytes. In mice, the hepatocyte-specific overexpression of ITGB3 exacerbates diet-induced obesity, insulin resistance, steatosis, and fibrosis, the deletion of ITGB3 alleviates these phenotypes. Additionally, the overexpression of DHHC5 reversed the hallmarks of MASH in ITGB3-deficient mice, confirming the central role of DHHC5 in this process. Mechanistically, ITGB3 is a novel "accelerator" that directly increases CD36-mediated fatty acid uptake by recruiting LYN, then modulating LYN protein stability, and triggering LYN proteasomal degradation. This degradation relieves LYN-mediated inhibition of DHHC5 and promotes ITGB3/DHHC5/CD36 complex formation, thereby enhancing DHHC5-dependent CD36 palmitoylation and subsequent CD36-mediated fatty acid uptake. Pharmacologic inhibition of ITGB3 using cyclic-RGDfk peptide improved serum lipid profiles and hepatic steatosis. This study uncovers a previously unrecognized mechanism by which ITGB3 acts as a driver of hepatic steatosis of hepatic steatosis. Targeted intervention against ITGB3 to modulate CD36-mediated lipid uptake may represent a novel therapeutic strategy for the treatment of MASH.
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