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Título: | Ductular reaction promotes intrahepatic angiogenesis through Slit2-Roundabout 1 signaling |
Autor: | Coll, Mar; Ariño, Silvia; Martínez-Sánchez, Celia; Garcia-Pras, Ester; Gallego, Javier CSIC; Moles, Anna CSIC ORCID; Aguilar-Bravo, Beatriz; Blaya, Delia; Vallverdú, Julia; Rubio-Tomás, Teresa; Lozano, Juan José; Pose, Elisa; Graupera, Isabel; Fernández-Vidal, Andrea; Pol, Albert; Bataller, Ramón; Geng, Jian-Guo; Ginès, Pere; Fernandez, Mercedes; Sancho-Bru, Pau | Fecha de publicación: | feb-2022 | Editor: | John Wiley & Sons | Citación: | Hepatology 75(2): 353-368 (2022) | Resumen: | Background and aims: Ductular reaction (DR) expands in chronic liver diseases and correlates with disease severity. Besides its potential role in liver regeneration, DR plays a role in the wound-healing response of the liver, promoting periductular fibrosis and inflammatory cell recruitment. However, there is no information regarding its role in intrahepatic angiogenesis. In the current study we investigated the potential contribution of DR cells to hepatic vascular remodeling during chronic liver disease. Approach and results: In mouse models of liver injury, DR cells express genes involved in angiogenesis. Among angiogenesis-related genes, the expression of Slit2 and its receptor Roundabout 1 (Robo1) was localized in DR cells and neoangiogenic vessels, respectively. The angiogenic role of the Slit2-Robo1 pathway in chronic liver disease was confirmed in ROBO1/2-/+ mice treated with 3,5-diethoxycarbonyl-1,4-dihydrocollidine, which displayed reduced intrahepatic neovascular density compared to wild-type mice. However, ROBO1/2 deficiency did not affect angiogenesis in partial hepatectomy. In patients with advanced alcohol-associated disease, angiogenesis was associated with DR, and up-regulation of SLIT2-ROBO1 correlated with DR and disease severity. In vitro, human liver-derived organoids produced SLIT2 and induced tube formation of endothelial cells. Conclusions: Overall, our data indicate that DR expansion promotes angiogenesis through the Slit2-Robo1 pathway and recognize DR cells as key players in the liver wound-healing response. | Versión del editor: | http://dx.doi.org/10.1002/hep.32140 | URI: | http://hdl.handle.net/10261/284276 | DOI: | 10.1002/hep.32140 | Identificadores: | doi: 10.1002/hep.32140 e-issn: 1527-3350 issn: 0270-9139 |
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