Expression of Cyclin E1 in hepatic stellate cells is critical for the induction and progression of liver fibrosis and hepatocellular carcinoma in mice

Abstract Hepatocellular carcinoma (HCC) is one of the most severe malignancies with increasing incidence and limited treatment options. Typically, HCC develops during a multistep process involving chronic liver inflammation and liver fibrosis. The latter is characterized by the accumulation of extra...

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Main Authors: Julia Otto, Anna Verwaayen, Christian Penners, Jana Hundertmark, Cheng Lin, Carina Kallen, Daniela Paffen, Tobias Otto, Hilmar Berger, Frank Tacke, Ralf Weiskirchen, Yulia A. Nevzorova, Matthias Bartneck, Christian Trautwein, Roland Sonntag, Christian Liedtke
Format: Article
Language:English
Published: Nature Publishing Group 2023-08-01
Series:Cell Death and Disease
Online Access:https://doi.org/10.1038/s41419-023-06077-4
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author Julia Otto
Anna Verwaayen
Christian Penners
Jana Hundertmark
Cheng Lin
Carina Kallen
Daniela Paffen
Tobias Otto
Hilmar Berger
Frank Tacke
Ralf Weiskirchen
Yulia A. Nevzorova
Matthias Bartneck
Christian Trautwein
Roland Sonntag
Christian Liedtke
author_facet Julia Otto
Anna Verwaayen
Christian Penners
Jana Hundertmark
Cheng Lin
Carina Kallen
Daniela Paffen
Tobias Otto
Hilmar Berger
Frank Tacke
Ralf Weiskirchen
Yulia A. Nevzorova
Matthias Bartneck
Christian Trautwein
Roland Sonntag
Christian Liedtke
author_sort Julia Otto
collection DOAJ
description Abstract Hepatocellular carcinoma (HCC) is one of the most severe malignancies with increasing incidence and limited treatment options. Typically, HCC develops during a multistep process involving chronic liver inflammation and liver fibrosis. The latter is characterized by the accumulation of extracellular matrix produced by Hepatic Stellate Cells (HSCs). This process involves cell cycle re-entry and proliferation of normally quiescent HSCs in an ordered sequence that is highly regulated by cyclins and associated cyclin-dependent kinases (CDKs) such as the Cyclin E1 (CCNE1)/CDK2 kinase complex. In the present study, we examined the role of Cyclin E1 (Ccne1) and Cdk2 genes in HSCs for liver fibrogenesis and hepatocarcinogenesis. To this end, we generated conditional knockout mice lacking Ccne1 or Cdk2 specifically in HSCs (Ccne1 ∆HSC or Cdk2 ∆HSC). Ccne1 ∆HSC mice showed significantly reduced liver fibrosis formation and attenuated HSC activation in the carbon tetrachloride (CCl4) model. In a combined model of fibrosis-driven hepatocarcinogenesis, Ccne1 ∆HSC mice revealed decreased HSC activation even after long-term observation and substantially reduced tumor load in the liver when compared to wild-type controls. Importantly, the deletion of Cdk2 in HSCs also resulted in attenuated liver fibrosis after chronic CCl4 treatment. Single-cell RNA sequencing revealed that only a small fraction of HSCs expressed Ccne1/Cdk2 at a distinct time point after CCl4 treatment. In summary, we provide evidence that Ccne1 expression in a small population of HSCs is sufficient to trigger extensive liver fibrosis and hepatocarcinogenesis in a Cdk2-dependent manner. Thus, HSC-specific targeting of Ccne1 or Cdk2 in patients with liver fibrosis and high risk for HCC development could be therapeutically beneficial.
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spelling doaj.art-45c433be5aaf43cdb0361d45f0a768b82023-08-27T11:30:11ZengNature Publishing GroupCell Death and Disease2041-48892023-08-0114811510.1038/s41419-023-06077-4Expression of Cyclin E1 in hepatic stellate cells is critical for the induction and progression of liver fibrosis and hepatocellular carcinoma in miceJulia Otto0Anna Verwaayen1Christian Penners2Jana Hundertmark3Cheng Lin4Carina Kallen5Daniela Paffen6Tobias Otto7Hilmar Berger8Frank Tacke9Ralf Weiskirchen10Yulia A. Nevzorova11Matthias Bartneck12Christian Trautwein13Roland Sonntag14Christian Liedtke15Department of Medicine III, University Hospital RWTH AachenDepartment of Medicine III, University Hospital RWTH AachenDepartment of Medicine III, University Hospital RWTH AachenCharité - Universitätsmedizin Berlin, Department of Hepatology and Gastroenterology, Campus Virchow-Klinikum and Campus Charité MitteDepartment of Medicine III, University Hospital RWTH AachenDepartment of Medicine III, University Hospital RWTH AachenDepartment of Medicine III, University Hospital RWTH AachenDepartment of Medicine III, University Hospital RWTH AachenCharité - Universitätsmedizin Berlin, Department of Hepatology and Gastroenterology, Campus Virchow-Klinikum and Campus Charité MitteCharité - Universitätsmedizin Berlin, Department of Hepatology and Gastroenterology, Campus Virchow-Klinikum and Campus Charité MitteInstitute of Molecular Pathobiochemistry, Experimental Gene Therapy and Clinical Chemistry (IFMPEGKC), University Hospital RWTH AachenDepartment of Immunology, Ophthalmology and ENT, Complutense University School of MedicineDepartment of Medicine III, University Hospital RWTH AachenDepartment of Medicine III, University Hospital RWTH AachenDepartment of Medicine III, University Hospital RWTH AachenDepartment of Medicine III, University Hospital RWTH AachenAbstract Hepatocellular carcinoma (HCC) is one of the most severe malignancies with increasing incidence and limited treatment options. Typically, HCC develops during a multistep process involving chronic liver inflammation and liver fibrosis. The latter is characterized by the accumulation of extracellular matrix produced by Hepatic Stellate Cells (HSCs). This process involves cell cycle re-entry and proliferation of normally quiescent HSCs in an ordered sequence that is highly regulated by cyclins and associated cyclin-dependent kinases (CDKs) such as the Cyclin E1 (CCNE1)/CDK2 kinase complex. In the present study, we examined the role of Cyclin E1 (Ccne1) and Cdk2 genes in HSCs for liver fibrogenesis and hepatocarcinogenesis. To this end, we generated conditional knockout mice lacking Ccne1 or Cdk2 specifically in HSCs (Ccne1 ∆HSC or Cdk2 ∆HSC). Ccne1 ∆HSC mice showed significantly reduced liver fibrosis formation and attenuated HSC activation in the carbon tetrachloride (CCl4) model. In a combined model of fibrosis-driven hepatocarcinogenesis, Ccne1 ∆HSC mice revealed decreased HSC activation even after long-term observation and substantially reduced tumor load in the liver when compared to wild-type controls. Importantly, the deletion of Cdk2 in HSCs also resulted in attenuated liver fibrosis after chronic CCl4 treatment. Single-cell RNA sequencing revealed that only a small fraction of HSCs expressed Ccne1/Cdk2 at a distinct time point after CCl4 treatment. In summary, we provide evidence that Ccne1 expression in a small population of HSCs is sufficient to trigger extensive liver fibrosis and hepatocarcinogenesis in a Cdk2-dependent manner. Thus, HSC-specific targeting of Ccne1 or Cdk2 in patients with liver fibrosis and high risk for HCC development could be therapeutically beneficial.https://doi.org/10.1038/s41419-023-06077-4
spellingShingle Julia Otto
Anna Verwaayen
Christian Penners
Jana Hundertmark
Cheng Lin
Carina Kallen
Daniela Paffen
Tobias Otto
Hilmar Berger
Frank Tacke
Ralf Weiskirchen
Yulia A. Nevzorova
Matthias Bartneck
Christian Trautwein
Roland Sonntag
Christian Liedtke
Expression of Cyclin E1 in hepatic stellate cells is critical for the induction and progression of liver fibrosis and hepatocellular carcinoma in mice
Cell Death and Disease
title Expression of Cyclin E1 in hepatic stellate cells is critical for the induction and progression of liver fibrosis and hepatocellular carcinoma in mice
title_full Expression of Cyclin E1 in hepatic stellate cells is critical for the induction and progression of liver fibrosis and hepatocellular carcinoma in mice
title_fullStr Expression of Cyclin E1 in hepatic stellate cells is critical for the induction and progression of liver fibrosis and hepatocellular carcinoma in mice
title_full_unstemmed Expression of Cyclin E1 in hepatic stellate cells is critical for the induction and progression of liver fibrosis and hepatocellular carcinoma in mice
title_short Expression of Cyclin E1 in hepatic stellate cells is critical for the induction and progression of liver fibrosis and hepatocellular carcinoma in mice
title_sort expression of cyclin e1 in hepatic stellate cells is critical for the induction and progression of liver fibrosis and hepatocellular carcinoma in mice
url https://doi.org/10.1038/s41419-023-06077-4
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