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Si us plau utilitzeu sempre aquest identificador per citar o enllaçar aquest document: https://hdl.handle.net/2445/97581
TGF-β1 and TGF-β2 abundance in liver diseases of mice and men
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TGF-β1 is a major player in chronic liver diseases promoting fibrogenesis and tumorigenesis through various mechanisms. The expression and function of TGF-β2 have not been investigated thoroughly in liver disease to date. In this paper, we provide evidence that TGF-β2 expression correlates with fibrogenesis and liver cancer development. Using quantitative realtime PCR and ELISA, we show that TGF-β2 mRNA expression and secretion increased in murine HSCs and hepatocytes over time in culture and were found in the human-derived HSC cell line LX-2. TGF-β2 stimulation of the LX-2 cells led to upregulation of the TGF-β receptors 1, 2, and 3, whereas TGF-β1 treatment did not alter or decrease their expression. In liver regeneration and fibrosis upon CCl4 challenge, the transient increase of TGF-β2 expression was accompanied by TGF-β1 and collagen expression. In bile duct ligation-induced fibrosis, TGF-β2 upregulation correlated with fibrotic markers and was more prominent than TGF-β1 expression. Accordingly, MDR2-KO mice showed significant TGF-β2 upregulation within 3 to 15 months but minor TGF-β1 expression changes. In 5 of 8 hepatocellular carcinoma (HCC)/hepatoblastoma cell lines, relatively high TGF-β2 expression and secretion were observed, with some cell lines even secreting more TGF-β2 than TGF-β1. TGF-β2 was also upregulated in tumors of TGFα/cMyc and DEN-treated mice. The analysis of publically available microarray data of 13 human HCC collectives revealed considerable upregulation of TGF-β2 as compared to normal liver. Our study demonstrates upregulation of TGF-β2 in liver disease and suggests TGF-β2 as a promising therapeutic target for tackling fibrosis and HCC.
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DROPMANN, Anne, DEDIULIA, Tatjana, BREITKOPF-HEINLEIN, Katja, KORHONEN, Hanna, JANICOT, Michel, WEBER, Susanne n., THOMAS, Maria, PIIPER, Albrecht, BERTRAN RODRÍGUEZ, Esther, FABREGAT ROMERO, Isabel, ABSHAGEN, Kerstin, HESS, Jochen, ANGEL, Peter, COULOUARN, Cédric, DOOLEY, Steven, MEINDL-BEINKER, Nadja m.. TGF-β1 and TGF-β2 abundance in liver diseases of mice and men. _Oncotarget_. 2016. Vol. 7, núm. 15, pàgs. 19499-19518. [consulta: 20 de gener de 2026]. ISSN: 1949-2553. [Disponible a: https://hdl.handle.net/2445/97581]