Cited by 48Liver physiology and pathologyCytokine Signaling Pathways and InteractionsOrgan Transplantation Techniques and Outcomes

Molecular dissection of gp130-dependent pathways in hepatocytes during liver regeneration

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Dierssen, Uta, Beraza, Naiara, Lutz, Holger H., Liedtke, Christian, Ernst, Matthias, Wasmuth, Hermann E., Trautwein, Christian·2008·Journal of Biological Chemistry

Abstract

Interleukin-6 (IL-6) via its signal transducer gp130 is an important mediator of liver regeneration involved in protecting from lipopolysaccharide (LPS)-induced liver injury after partial hepatectomy (PH). Here we generated mice either defective (Delta) in hepatocyte-specific gp130-dependent Ras or STAT activation to define their role during liver regeneration. Deletion of gp130-dependent signaling had major impact on acute phase gene (APG) regulation after PH. APG expression was blocked in gp130-DeltaSTAT animals, whereas gp130-DeltaRas mice showed an enhanced APG response and stronger SOCS3 regulation correlating with delayed hepatocyte proliferation. To define the role of SOCS3 during hepatocyte proliferation, primary hepatocytes were co-stimulated with IL-6 and hepatocyte growth factor. Higher SOCS3 expression in gp130-DeltaRas hepatocytes correlated with delayed hepatocyte proliferation. Next, we tested the impact of LPS, mimicking bacterial infection, on liver regeneration. LPS and PH induced SOCS3 and APG in all animal strains and delayed cell cycle progression. Additionally, IL-6/gp130-dependent STAT3 activation in hepatocytes was essential in mediating protection and thus required for maximal proliferation. Unexpectedly, oncostatin M was most strongly induced in gp130-DeltaSTAT animals after PH/LPS-induced stress and was associated with hepatocyte proliferation in this strain. In summary, gp130-dependent STAT3 activation and concomitant SOCS3 during liver regeneratio…

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Crossref · 10.1074/jbc.m705483200

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Authors
Dierssen, U., Beraza, N., Lutz, H. H., Liedtke, C., Ernst, M., Wasmuth, H. E., & Trautwein, C.
Affiliations
  • Universitätsklinikum Aachen (DE)
  • Ludwig Cancer Research (BE)
Corresponding author
Trautwein, Christian
Venue
Journal of Biological Chemistry
Publisher
Elsevier BV
Published
2008-04
Volume
283
Issue
15
Pages
9886-9895
ISSN
0021-9258 (ISSN-L)
OpenAlex
W1998238281
Cited by
48
References
42
Citations by year
2023: 2 · 2022: 1 · 2021: 1 · 2019: 1 · 2018: 1 · 2017: 1 · 2015: 4 · 2014: 3 · 2013: 5 · 2012: 6
FWCI
5.37
Type
journal article
Language
en
Open access
Locations
  • Journal of Biological Chemistry (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • RWTH Publications (RWTH Aachen) (submittedVersion)
Topics
  • Health Sciences › Medicine › Hepatology › Liver physiology and pathology
  • Health Sciences › Medicine › Oncology › Cytokine Signaling Pathways and Interactions
  • Health Sciences › Medicine › Surgery › Organ Transplantation Techniques and Outcomes
Keywords
gp130, interleukin-6, liver regeneration, partial hepatectomy, STAT3 signaling, Ras signaling, SOCS3, hepatocyte proliferation, lipopolysaccharide, hepatocyte growth factor, oncostatin M, hepatocyte-specific gene deletion
MeSH terms
Suppressor of Cytokine Signaling 3 Protein, Acute-Phase Reaction, Animals, Bacterial Infections, DNA, Female, Hepatectomy, Lipopolysaccharides, Liver, Liver Regeneration, Male, Interleukin-6, Proto-Oncogene Proteins p21(ras), Mice, Knockout, Hepatocytes, Cell Proliferation, STAT3 Transcription Factor, Cytokine Receptor gp130, Suppressor of Cytokine Signaling Proteins, Mice

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