AMF/PGI transactivates the MMP-3 gene through the activation of Src-RhoA-phosphatidylinositol 3-kinase signaling to induce hepatoma cell migration

Cancer Lett. 2008 Nov 8;270(2):202-17. doi: 10.1016/j.canlet.2008.05.005. Epub 2008 Jun 20.

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

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Carcinoma, Hepatocellular / enzymology*
  • Carcinoma, Hepatocellular / genetics
  • Carcinoma, Hepatocellular / pathology
  • Cell Line, Tumor
  • Cell Movement* / drug effects
  • Cell Movement* / genetics
  • Cloning, Molecular
  • Enzyme Inhibitors / pharmacology
  • Gene Expression Regulation, Enzymologic
  • Gene Expression Regulation, Neoplastic
  • Glucose-6-Phosphate Isomerase / genetics
  • Glucose-6-Phosphate Isomerase / metabolism*
  • Humans
  • Liver Neoplasms / enzymology*
  • Liver Neoplasms / genetics
  • Liver Neoplasms / pathology
  • Matrix Metalloproteinase 3 / genetics
  • Matrix Metalloproteinase 3 / metabolism*
  • Phosphatidylinositol 3-Kinases / metabolism*
  • Phosphoinositide-3 Kinase Inhibitors
  • Point Mutation
  • Promoter Regions, Genetic
  • Signal Transduction* / drug effects
  • Signal Transduction* / genetics
  • Transcription Factor AP-1 / metabolism
  • Transcriptional Activation
  • Transfection
  • rhoA GTP-Binding Protein / antagonists & inhibitors
  • rhoA GTP-Binding Protein / metabolism*
  • src-Family Kinases / antagonists & inhibitors
  • src-Family Kinases / metabolism*

Substances

  • Enzyme Inhibitors
  • Phosphoinositide-3 Kinase Inhibitors
  • Transcription Factor AP-1
  • RHOA protein, human
  • src-Family Kinases
  • MMP3 protein, human
  • Matrix Metalloproteinase 3
  • rhoA GTP-Binding Protein
  • Glucose-6-Phosphate Isomerase