Liver specific deletion of CYLDexon7/8 induces severe biliary damage, fibrosis and increases hepatocarcinogenesis in mice
Background & Aims - CYLD is a tumor suppressor gene that is mutated in familial cylindromatosis, an autosomal dominant predisposition to tumors of skin appendages. Reduced CYLD expression has been observed in other tumor entities, including hepatocellular carcinoma. In the present study, we anal...
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| Hauptverfasser: | , , , , , |
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
21 June 2012
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| In: |
Journal of hepatology
Year: 2012, Jahrgang: 57, Heft: 5, Pages: 995-1003 |
| ISSN: | 1600-0641 |
| DOI: | 10.1016/j.jhep.2012.06.017 |
| Online-Zugang: | Verlag, Pay-per-use, Volltext: http://dx.doi.org/10.1016/j.jhep.2012.06.017 Verlag, Pay-per-use, Volltext: http://www.sciencedirect.com/science/article/pii/S0168827812004436 
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| Verfasserangaben: | Toni Urbanik, Regina Johanna Boger, Thomas Longerich, Katharina Becker, Karl Roland Ehrenberg, Nadine Hövelmeyer, Matthias Hahn, Marcus Schuchmann, Dirk Jäger, Ari Waisman, Marcus Alexander Wörns, Henning Schulze-Bergkamen |
MARC
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| 245 | 1 | 0 | |a Liver specific deletion of CYLDexon7/8 induces severe biliary damage, fibrosis and increases hepatocarcinogenesis in mice |c Toni Urbanik, Regina Johanna Boger, Thomas Longerich, Katharina Becker, Karl Roland Ehrenberg, Nadine Hövelmeyer, Matthias Hahn, Marcus Schuchmann, Dirk Jäger, Ari Waisman, Marcus Alexander Wörns, Henning Schulze-Bergkamen |
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| 520 | |a Background & Aims - CYLD is a tumor suppressor gene that is mutated in familial cylindromatosis, an autosomal dominant predisposition to tumors of skin appendages. Reduced CYLD expression has been observed in other tumor entities, including hepatocellular carcinoma. In the present study, we analyzed the role of CYLD in liver homeostasis and hepatocarcinogenesis in vivo. - Methods - Mice with liver-specific deletion of CYLDexon7/8 (CYLDFFxAlbCre) were generated. Liver tissues were histologically analyzed and oval cell activation was investigated. Hepatocarcinogenesis was induced by diethylnitrosamine/phenobarbital (DEN/PB). Microarray expression profiling of livers was performed in untreated as well as DEN/PB-treated mice. NF-κB signaling was assessed by ELISA, quantitative real-time PCR, and Western blotting. - Results - CYLDFFxAlbCre hepatocytes and cholangiocytes did not express full-length CYLD (FL-CYLD) protein but showed increased expression of the naturally occurring short-CYLD splice variant (s-CYLD). CYLDFFxAlbCre mice exhibited a prominent biliary phenotype with ductular reaction and biliary-type fibrosis. In addition, CYLDFFxAlbCre mice showed a significantly increased sensitivity towards DEN/PB-induced hepatocarcinogenesis. Moreover, we could observe the development of cholangiocellular carcinoma, in line with enhanced oval cell activity. NF-κB-signaling was increased in livers of CYLDFFxAlbCre mice and likely contributed to the inflammatory and fibrotic response. - Conclusions - The deletion of exon7/8 of the CYLD gene activates oval cells, leads to a biliary phenotype, and increases the susceptibility towards carcinogenesis in the liver. Thus, our study presents a novel model of biliary damage and liver fibrosis, followed by cancer development. | ||
| 650 | 4 | |a Cholangiocellular carcinoma | |
| 650 | 4 | |a DEN | |
| 650 | 4 | |a Fibrosis | |
| 650 | 4 | |a Hepatocellular carcinoma | |
| 650 | 4 | |a NF-κB | |
| 650 | 4 | |a Oval cells | |
| 650 | 4 | |a TNF-α | |
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