Document Detail

SAMe and HuR in liver physiology: usefulness of stem cells in hepatic differentiation research.
MedLine Citation:
PMID:  22167646     Owner:  NLM     Status:  MEDLINE    
S-Adenosylmethionine, abbreviated as SAM, SAMe or AdoMet, is the principal methyl group donor in the mammalian cell and the first step metabolite of the methionine cycle, being synthesized by MAT (methionine adenosyltransferase) from methionine and ATP. About 60 years after its identification, SAMe is admitted as a key hepatic regulator whose level needs to be maintained within a specific range in order to avoid liver damage. Recently, in vitro and in vivo studies have demonstrated the regulatory role of SAMe in HGF (hepatocyte growth factor)-mediated hepatocyte proliferation through a mechanism that implicates the activation of the non-canonical LKB1/AMPK/eNOS cascade and HuR function. Regarding hepatic differentiation, cellular SAMe content varies depending on the status of the cell, being lower in immature than in adult hepatocytes. This finding suggests a SAMe regulatory effect also in this cellular process, which very recently was reported and related to HuR activity. Although in the last years this and other discoveries contributed to throw light into the tangle of regulatory mechanisms that govern this complex process, an overall understanding is still a challenge. For this purpose, the in vitro hepatic differentiation culture systems by using stem cells or fetal hepatoblasts are considered as valuable tools which, in combination with the methods used in current days to elucidate cell signaling pathways, surely will help to clear up this question.
Laura Gomez-Santos; Mercedes Vazquez-Chantada; Jose Maria Mato; Maria Luz Martinez-Chantar
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't; Review    
Journal Detail:
Title:  Methods in molecular biology (Clifton, N.J.)     Volume:  826     ISSN:  1940-6029     ISO Abbreviation:  Methods Mol. Biol.     Publication Date:  2012  
Date Detail:
Created Date:  2011-12-14     Completed Date:  2012-04-03     Revised Date:  2014-09-11    
Medline Journal Info:
Nlm Unique ID:  9214969     Medline TA:  Methods Mol Biol     Country:  United States    
Other Details:
Languages:  eng     Pagination:  133-49     Citation Subset:  IM    
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MeSH Terms
Blotting, Western / methods
Cell Differentiation / physiology*
Cell Proliferation
Fluorescent Antibody Technique / methods
Gene Expression Regulation / physiology*
Hepatocytes / cytology*,  metabolism
Hu Paraneoplastic Encephalomyelitis Antigens / metabolism*
Liver / cytology*,  physiology
Models, Biological
S-Adenosylmethionine / metabolism*
Signal Transduction / physiology*
Stem Cells / cytology*
Grant Support
Reg. No./Substance:
0/Hu Paraneoplastic Encephalomyelitis Antigens; 7LP2MPO46S/S-Adenosylmethionine

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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