Document Detail


HSCs play a distinct role in different phases of oval cell-mediated liver regeneration.
MedLine Citation:
PMID:  22535704     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
Hepatic stem cell niche plays an important role in hepatic oval cell-mediated liver regeneration. As a component of hepatic stem cell niche, the role of hepatic stellate cells (HSCs) in oval cell proliferation needs further studies. In the present study, we isolated HSCs from rats at indicated time point after partial hepatectomy (PH) in 2-acetylaminofluorene/PH oval cell proliferation model. Conditional medium (CM) from HSCs were collected to detect their effects on proliferation and the mitogen-activated protein kinase pathway activation of two oval cell lines. We found that CM collected from HSCs at early phase of liver regeneration (4 and 9 days group) contained high levels of hepatocyte growth factor (HGF) and stimulated oval cell proliferation via extracellular signal-regulated kinase and p38 pathway. CM collected from HSCs at terminal phase of liver regeneration (12 and 15 days group) contained high levels of transforming growth factor (TGF)-β1, which suppressed DNA synthesis of oval cells. The shift between these two distinct effects depended on the balance between HGF and TGF-β1 secreted by HSCs. Our study demonstrated that HSCs acted as a positive regulator at the early phase and a negative regulator at the terminal phase of the oval cell-mediated liver regeneration. Copyright © 2012 John Wiley & Sons, Ltd.
Authors:
Lin Chen; Wei Zhang; Qiao-Dan Zhou; Hong-Qiang Yang; Hui-Fang Liang; Bi-Xiang Zhang; Xin Long; Xiao-Ping Chen
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-4-26
Journal Detail:
Title:  Cell biochemistry and function     Volume:  -     ISSN:  1099-0844     ISO Abbreviation:  -     Publication Date:  2012 Apr 
Date Detail:
Created Date:  2012-4-26     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8305874     Medline TA:  Cell Biochem Funct     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
Copyright © 2012 John Wiley & Sons, Ltd.
Affiliation:
Hepatic Surgery Centre, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.
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