Lack of glycoprotein 130/signal transducer and activator of transcription 3-mediated signaling in hepatocytes enhances chronic liver injury and fibrosis progression in a model of sclerosing cholangitis
The 3,5-diethoxycarbonyl-1,4-dihydrocollidine (DDC) model leads to chronic cholestatic liver injury and therefore resembles human diseases such as sclerosing cholangitis and forms of metabolic liver diseases. The role of the interleukin-6/glycoprotein 130 (gp130) system in this context is still unde...
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| Hauptverfasser: | , , , , , , , , |
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
16 December 2010
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| In: |
The American journal of pathology
Year: 2010, Jahrgang: 176, Heft: 5, Pages: 2236-2246 |
| ISSN: | 1525-2191 |
| DOI: | 10.2353/ajpath.2010.090469 |
| Online-Zugang: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.2353/ajpath.2010.090469 Verlag, lizenzpflichtig, Volltext: https://www.sciencedirect.com/science/article/pii/S000294401060020X 
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| Verfasserangaben: | Werner Plum, Darjus F. Tschaharganeh, Daniela C. Kroy, Eva Corsten, Stephanie Erschfeld, Uta Dierssen, Hermann Wasmuth, Christian Trautwein, and Konrad L. Streetz |
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| 245 | 1 | 0 | |a Lack of glycoprotein 130/signal transducer and activator of transcription 3-mediated signaling in hepatocytes enhances chronic liver injury and fibrosis progression in a model of sclerosing cholangitis |c Werner Plum, Darjus F. Tschaharganeh, Daniela C. Kroy, Eva Corsten, Stephanie Erschfeld, Uta Dierssen, Hermann Wasmuth, Christian Trautwein, and Konrad L. Streetz |
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| 520 | |a The 3,5-diethoxycarbonyl-1,4-dihydrocollidine (DDC) model leads to chronic cholestatic liver injury and therefore resembles human diseases such as sclerosing cholangitis and forms of metabolic liver diseases. The role of the interleukin-6/glycoprotein 130 (gp130) system in this context is still undefined. Therefore, conditional gp130 knockout and knockin mice were used to achieve hepatocyte-specific deletions of gp130 (gp130Δhepa), gp130-dependent ras (gp130ΔhepaRas), and signal transducer and activator of transcription (STAT) (gp130ΔhepaSTAT) activation. These mice were treated with a DDC-containing diet and analyzed over time. Mice deficient in hepatic gp130 and STAT signaling showed increased and earlier mortality than wild-type and gp130ΔhepaRas animals. Over time, significantly more apoptosis and cholestasis became evident in gp130Δhepa and gp130ΔhepaSTAT mice. These mice also displayed increased tumor necrosis factor-α expression, a diminished acute-phase response (lack of STAT3 and serum amyloid A activation), and enhanced immune cell infiltration in the liver. These were associated with stronger periportal oval cell activation. In addition, DDC treatment in gp130Δhepa and gp130ΔhepaSTAT mice resulted in significantly stronger hepatic stellate cell activation. Long-term analysis revealed the development of severe liver fibrosis in gp130Δhepa and gp130ΔhepaSTAT animals, as evidenced by increased collagen accumulation. Here we demonstrate that gp130/STAT signaling in hepatocytes provides protection in a cholestatic hepatitis mouse model. STAT3-dependent signaling pathways in hepatocytes protect from apoptosis and tissue injury, which subsequently reduce oval cell activation and prevent fibrosis progression. | ||
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| 700 | 1 | |a Kroy, Daniela C. |e VerfasserIn |4 aut | |
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| 700 | 1 | |a Trautwein, Christian |e VerfasserIn |4 aut | |
| 700 | 1 | |a Streetz, Konrad L. |e VerfasserIn |4 aut | |
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