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Title: Conditional loss of heparin-binding EGF-like growth factor results in enhanced liver fibrosis after bile duct ligation in mice

Abstract

Highlights: •HB-EGF expression was increased during the development of liver fibrosis. •Conditional HB-EGF knockout mouse showed enhanced experimental liver fibrosis. •HB-EGF antagonized TGF-β-induced activation of hepatic stellate cells. •We report a possible protective role of HB-EGF in cholestatic liver fibrosis. -- Abstract: Our aims were to evaluate the involvement of heparin-binding EGF-like growth factor (HB-EGF) in liver fibrogenesis of humans and mice and to elucidate the effect of HB-EGF deficiency on cholestatic liver fibrosis using conditional HB-EGF knockout (KO) mice. We first demonstrated that gene expression of HB-EGF had a positive significant correlation with that of collagen in human fibrotic livers, and was increased in bile duct ligation (BDL)-induced fibrotic livers in mouse. We then generated conditional HB-EGF knockout (KO) mice using the interferon inducible Mx-1 promoter driven Cre recombinase transgene and wild type (WT) and KO mice were subjected to BDL. After BDL, KO mice exhibited enhanced liver fibrosis with increased expression of collagen, compared with WT mice. Finally, we used mouse hepatic stellate cells (HSCs) to examine the role of HB-EGF in the activation of these cells and showed that HB-EGF antagonized TGF-β-induced gene expression of collagen in mouse primary HSCs. Interestingly, HB-EGF did not prevent the TGF-β-inducedmore » nuclear accumulation of Smad3, but did lead to stabilization of the Smad transcriptional co-repressor TG-interacting factor. In conclusion, our data suggest a possible protective role of HB-EGF in cholestatic liver fibrosis.« less

Authors:
;  [1];  [1]; ; ; ; ; ; ;  [1];  [2];  [3]; ;  [4];  [1]
  1. Department of Gastroenterology and Hepatology, Osaka University, Graduate School of Medicine, Osaka (Japan)
  2. Department of Gastroenterology, Ikeda Municipal Hospital, Ikeda, Osaka (Japan)
  3. Department of Biochemistry and Molecular Genetics, Ehime University, Graduate School of Medicine and Department of Cell Growth and Tumor Regulation, Proteo-Medicine Research Center (ProMRes), Ehime University, Shitsukawa, Toon, Ehime (Japan)
  4. Department of Cell Biology, Research Institute for Microbial Diseases, Osaka University, Suita, Osaka (Japan)
Publication Date:
OSTI Identifier:
22239680
Resource Type:
Journal Article
Journal Name:
Biochemical and Biophysical Research Communications
Additional Journal Information:
Journal Volume: 437; Journal Issue: 2; Other Information: Copyright (c) 2013 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0006-291X
Country of Publication:
United States
Language:
English
Subject:
60 APPLIED LIFE SCIENCES; ALANINES; ALKALINE PHOSPHATASE; BILIARY TRACT; BILIRUBIN; COLLAGEN; EOSIN; FIBROSIS; HEMATOXYLIN; HEPARIN; INTERFERON; KNOCK-OUT REACTIONS; LIVER; MICE; POLYMERASE CHAIN REACTION

Citation Formats

Takemura, Takayo, Yoshida, Yuichi, Kiso, Shinichi, Kizu, Takashi, Furuta, Kunimaro, Ezaki, Hisao, Hamano, Mina, Egawa, Mayumi, Chatani, Norihiro, Kamada, Yoshihiro, Imai, Yasuharu, Higashiyama, Shigeki, Iwamoto, Ryo, Mekada, Eisuke, and Takehara, Tetsuo. Conditional loss of heparin-binding EGF-like growth factor results in enhanced liver fibrosis after bile duct ligation in mice. United States: N. p., 2013. Web. doi:10.1016/J.BBRC.2013.05.097.
Takemura, Takayo, Yoshida, Yuichi, Kiso, Shinichi, Kizu, Takashi, Furuta, Kunimaro, Ezaki, Hisao, Hamano, Mina, Egawa, Mayumi, Chatani, Norihiro, Kamada, Yoshihiro, Imai, Yasuharu, Higashiyama, Shigeki, Iwamoto, Ryo, Mekada, Eisuke, & Takehara, Tetsuo. Conditional loss of heparin-binding EGF-like growth factor results in enhanced liver fibrosis after bile duct ligation in mice. United States. https://doi.org/10.1016/J.BBRC.2013.05.097
Takemura, Takayo, Yoshida, Yuichi, Kiso, Shinichi, Kizu, Takashi, Furuta, Kunimaro, Ezaki, Hisao, Hamano, Mina, Egawa, Mayumi, Chatani, Norihiro, Kamada, Yoshihiro, Imai, Yasuharu, Higashiyama, Shigeki, Iwamoto, Ryo, Mekada, Eisuke, and Takehara, Tetsuo. 2013. "Conditional loss of heparin-binding EGF-like growth factor results in enhanced liver fibrosis after bile duct ligation in mice". United States. https://doi.org/10.1016/J.BBRC.2013.05.097.
@article{osti_22239680,
title = {Conditional loss of heparin-binding EGF-like growth factor results in enhanced liver fibrosis after bile duct ligation in mice},
author = {Takemura, Takayo and Yoshida, Yuichi and Kiso, Shinichi and Kizu, Takashi and Furuta, Kunimaro and Ezaki, Hisao and Hamano, Mina and Egawa, Mayumi and Chatani, Norihiro and Kamada, Yoshihiro and Imai, Yasuharu and Higashiyama, Shigeki and Iwamoto, Ryo and Mekada, Eisuke and Takehara, Tetsuo},
abstractNote = {Highlights: •HB-EGF expression was increased during the development of liver fibrosis. •Conditional HB-EGF knockout mouse showed enhanced experimental liver fibrosis. •HB-EGF antagonized TGF-β-induced activation of hepatic stellate cells. •We report a possible protective role of HB-EGF in cholestatic liver fibrosis. -- Abstract: Our aims were to evaluate the involvement of heparin-binding EGF-like growth factor (HB-EGF) in liver fibrogenesis of humans and mice and to elucidate the effect of HB-EGF deficiency on cholestatic liver fibrosis using conditional HB-EGF knockout (KO) mice. We first demonstrated that gene expression of HB-EGF had a positive significant correlation with that of collagen in human fibrotic livers, and was increased in bile duct ligation (BDL)-induced fibrotic livers in mouse. We then generated conditional HB-EGF knockout (KO) mice using the interferon inducible Mx-1 promoter driven Cre recombinase transgene and wild type (WT) and KO mice were subjected to BDL. After BDL, KO mice exhibited enhanced liver fibrosis with increased expression of collagen, compared with WT mice. Finally, we used mouse hepatic stellate cells (HSCs) to examine the role of HB-EGF in the activation of these cells and showed that HB-EGF antagonized TGF-β-induced gene expression of collagen in mouse primary HSCs. Interestingly, HB-EGF did not prevent the TGF-β-induced nuclear accumulation of Smad3, but did lead to stabilization of the Smad transcriptional co-repressor TG-interacting factor. In conclusion, our data suggest a possible protective role of HB-EGF in cholestatic liver fibrosis.},
doi = {10.1016/J.BBRC.2013.05.097},
url = {https://www.osti.gov/biblio/22239680}, journal = {Biochemical and Biophysical Research Communications},
issn = {0006-291X},
number = 2,
volume = 437,
place = {United States},
year = {Fri Jul 26 00:00:00 EDT 2013},
month = {Fri Jul 26 00:00:00 EDT 2013}
}