Transforming growth factor-β signaling in alcohol-associated liver disease: a multicellular perspective : recent advances in understanding alcohol-induced organ damage theme issue

Transforming growth factor-β (TGF-β) signaling exerts broad regulatory effects on alcohol-associated liver disease (ALD) progression, influencing processes such as hepatocellular injury, regeneration, inflammation, fibrogenesis, cirrhosis, carcinogenesis, and hepatic failure. TGF-β modifies alcohol-...

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Hauptverfasser: Zou, Huihui (VerfasserIn) , Wang, Sai (VerfasserIn) , Huang, Chenjun (VerfasserIn) , Dooley, Steven (VerfasserIn) , Meindl-Beinker, Nadja M. (VerfasserIn)
Dokumenttyp: Article (Journal)
Sprache:Englisch
Veröffentlicht: January 2026
In: The American journal of pathology
Year: 2026, Jahrgang: 196, Heft: 1, Pages: 50-67
ISSN:1525-2191
DOI:10.1016/j.ajpath.2025.09.017
Online-Zugang:Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1016/j.ajpath.2025.09.017
Verlag, lizenzpflichtig, Volltext: https://www.sciencedirect.com/science/article/pii/S0002944025003815
Volltext
Verfasserangaben:Huihui Zou, Sai Wang, Chenjun Huang, Steven Dooley, and Nadja M. Meindl-Beinker

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520 |a Transforming growth factor-β (TGF-β) signaling exerts broad regulatory effects on alcohol-associated liver disease (ALD) progression, influencing processes such as hepatocellular injury, regeneration, inflammation, fibrogenesis, cirrhosis, carcinogenesis, and hepatic failure. TGF-β modifies alcohol-induced signals in multiple liver-resident cell types, including hepatocytes, hepatic stellate cells, liver sinusoidal endothelial cells, and immune populations, particularly macrophages. To delineate its context-specific roles in ALD, 154 of 421 PubMed-listed publications (2000 to 2025; search terms TGF-β and alcohol and liver disease) were reviewed, supplemented by 19 foundational studies published earlier. In hepatocytes, TGF-β promotes oxidative stress, apoptosis, metabolic reprogramming, and epithelial-to-mesenchymal transition. In hepatic stellate cells and Kupffer cells, gut-derived endotoxins, ethanol, and unsaturated fatty acids induce TGF-β alongside proinflammatory cytokines. Ethanol metabolism generates acetaldehyde, which drives TGF-β and receptor expression, enhances canonical and noncanonical signaling, and engages epigenetic regulators to promote extracellular matrix deposition. In liver sinusoidal endothelial cells, alcohol-induced TGF-β suppresses proliferation, contributing to sinusoidal capillarization, impaired endothelial regeneration, and fibrogenesis. TGF-β dampens clearance of damaged hepatocytes and perpetuating chronic injury by suppressing natural killer cell cytotoxicity and promoting regulatory T-cell differentiation. At end-stage disease, TGF-β promotes expansion and fate switching of cholangiocyte-derived liver progenitor cells to replenish lost hepatocytes. Despite its central role in ALD, therapeutic exploitation of TGF-β signaling remains underexplored. Future studies should define cell type-specific signaling nodes to enable precision therapies. 
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