rdf:type |
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lifeskim:mentions |
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pubmed:issue |
6
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pubmed:dateCreated |
2010-11-26
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pubmed:abstractText |
Gluconeogenesis makes a major contribution to hepatic glucose production, a process critical for survival in mammals. In this study, we identify the p160 family member, SRC-1, as a key coordinator of the hepatic gluconeogenic program in vivo. SRC-1-null mice displayed hypoglycemia secondary to a deficit in hepatic glucose production. Selective re-expression of SRC-1 in the liver restored blood glucose levels to a normal range. SRC-1 was found induced upon fasting to coordinate in a cell-autonomous manner, the gene expression of rate-limiting enzymes of the gluconeogenic pathway. At the molecular level, the main role of SRC-1 was to modulate the expression and the activity of C/EBP? through a feed-forward loop in which SRC-1 used C/EBP? to transactivate pyruvate carboxylase, a crucial gene for initiation of the gluconeogenic program. We propose that SRC-1 acts as a critical mediator of glucose homeostasis in the liver by adjusting the transcriptional activity of key genes involved in the hepatic glucose production machinery.
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pubmed:grant |
|
pubmed:language |
eng
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pubmed:journal |
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pubmed:citationSubset |
IM
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pubmed:chemical |
|
pubmed:status |
MEDLINE
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pubmed:month |
Dec
|
pubmed:issn |
1932-7420
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pubmed:author |
pubmed-author:BainJames RJR,
pubmed-author:ChopraAtul RAR,
pubmed-author:DeMayoFrancoF,
pubmed-author:IlkayevaOlga ROR,
pubmed-author:LouetJean-FrancoisJF,
pubmed-author:MOEHH,
pubmed-author:NewgardChristopher BCB,
pubmed-author:O'MalleyBert WBW,
pubmed-author:SagenJorn VJV,
pubmed-author:SahaPradip KPK,
pubmed-author:StevensRobert DRD,
pubmed-author:Tannour-LouetMouniaM,
pubmed-author:WennerBrett RBR,
pubmed-author:XuJianmingJ,
pubmed-author:YorkBrianB,
pubmed-author:ZhouSuolingS
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pubmed:copyrightInfo |
Copyright © 2010 Elsevier Inc. All rights reserved.
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pubmed:issnType |
Electronic
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pubmed:day |
1
|
pubmed:volume |
12
|
pubmed:owner |
NLM
|
pubmed:authorsComplete |
Y
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pubmed:pagination |
606-18
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pubmed:dateRevised |
2011-9-26
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pubmed:meshHeading |
pubmed-meshheading:21109193-Animals,
pubmed-meshheading:21109193-Blotting, Western,
pubmed-meshheading:21109193-Chromatin Immunoprecipitation,
pubmed-meshheading:21109193-Gene Expression Profiling,
pubmed-meshheading:21109193-Gene Expression Regulation,
pubmed-meshheading:21109193-Gluconeogenesis,
pubmed-meshheading:21109193-Glucose,
pubmed-meshheading:21109193-Hypoglycemia,
pubmed-meshheading:21109193-Immunoprecipitation,
pubmed-meshheading:21109193-Liver,
pubmed-meshheading:21109193-Mice,
pubmed-meshheading:21109193-Mice, Inbred C57BL,
pubmed-meshheading:21109193-Nuclear Receptor Coactivator 1,
pubmed-meshheading:21109193-Polymerase Chain Reaction
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pubmed:year |
2010
|
pubmed:articleTitle |
The coactivator SRC-1 is an essential coordinator of hepatic glucose production.
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pubmed:affiliation |
Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, TX 77030, USA.
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pubmed:publicationType |
Journal Article,
Research Support, N.I.H., Extramural
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