Abstract
We have previously shown that AMF/PGI induces hepatoma cell migration through the induction of MMP-3. This work investigates how AMF/PGI activates the MMP-3 gene. We demonstrated that AMF/PGI transactivates the MMP-3 gene promoter through AP-1. The transactivation and induction of cell migration effect of AMF/PGI directly correlates with its enzymatic activity. Various analyses showed that AMF/PGI stimulated the Src-RhoA-PI3-kinase signaling pathway, and these three signaling molecules could form a complex. Our results demonstrate a new mechanism of AMF/PGI-induced cell migration and a link between Src-RhoA-PI3-kinase, AP-1, MMP-3 and hepatoma cell migration.
Publication types
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Research Support, Non-U.S. Gov't
MeSH terms
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Carcinoma, Hepatocellular / enzymology*
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Carcinoma, Hepatocellular / genetics
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Carcinoma, Hepatocellular / pathology
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Cell Line, Tumor
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Cell Movement* / drug effects
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Cell Movement* / genetics
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Cloning, Molecular
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Enzyme Inhibitors / pharmacology
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Gene Expression Regulation, Enzymologic
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Gene Expression Regulation, Neoplastic
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Glucose-6-Phosphate Isomerase / genetics
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Glucose-6-Phosphate Isomerase / metabolism*
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Humans
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Liver Neoplasms / enzymology*
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Liver Neoplasms / genetics
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Liver Neoplasms / pathology
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Matrix Metalloproteinase 3 / genetics
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Matrix Metalloproteinase 3 / metabolism*
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Phosphatidylinositol 3-Kinases / metabolism*
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Phosphoinositide-3 Kinase Inhibitors
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Point Mutation
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Promoter Regions, Genetic
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Signal Transduction* / drug effects
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Signal Transduction* / genetics
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Transcription Factor AP-1 / metabolism
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Transcriptional Activation
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Transfection
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rhoA GTP-Binding Protein / antagonists & inhibitors
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rhoA GTP-Binding Protein / metabolism*
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src-Family Kinases / antagonists & inhibitors
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src-Family Kinases / metabolism*
Substances
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Enzyme Inhibitors
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Phosphoinositide-3 Kinase Inhibitors
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Transcription Factor AP-1
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RHOA protein, human
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src-Family Kinases
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MMP3 protein, human
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Matrix Metalloproteinase 3
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rhoA GTP-Binding Protein
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Glucose-6-Phosphate Isomerase