AMF/PGI transactivates the MMP-3 gene through the activation of Src-RhoA-phosphatidylinositol 3-kinase signaling to induce hepatoma cell migration.
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.
Graduate Institute, Department of Life Science, Tzu-Chi University, 701 Section 3, Chung-Yang Road, Hualien 970, Taiwan. shihwl@mail.tcu.edu.tw
Wen-Ling
WL
Shih
Ming-Huei
MH
Liao
Feng-Ling
FL
Yu
Ping-Yuan
PY
Lin
Hsue-Yin
HY
Hsu
Shu-Jun
SJ
Chiu
D006528:Carcinoma, Hepatocellular / Q000201:enzymology* / Q000235:genetics / Q000473:pathology; D045744:Cell Line, Tumor; D002465:Cell Movement / Q000187:drug effects / Q000235:genetics; D003001:Cloning, Molecular; D004791:Enzyme Inhibitors / Q000494:pharmacology; D015971:Gene Expression Regulation, Enzymologic; D015972:Gene Expression Regulation, Neoplastic; D005956:Glucose-6-Phosphate Isomerase / Q000235:genetics / Q000378:metabolism*; D006801:Humans; D008113:Liver Neoplasms / Q000201:enzymology* / Q000235:genetics / Q000473:pathology; D019278:Matrix Metalloproteinase 3 / Q000235:genetics / Q000378:metabolism*; D019869:Phosphatidylinositol 3-Kinases / Q000378:metabolism*; D000081082:Phosphoinositide-3 Kinase Inhibitors; D017354:Point Mutation; D011401:Promoter Regions, Genetic; D015398:Signal Transduction / Q000187:drug effects / Q000235:genetics; D018808:Transcription Factor AP-1 / Q000378:metabolism; D015533:Transcriptional Activation; D014162:Transfection; D020742:rhoA GTP-Binding Protein / Q000037:antagonists & inhibitors / Q000378:metabolism*; D019061:src-Family Kinases / Q000037:antagonists & inhibitors / Q000378:metabolism*
D004791:Enzyme Inhibitors; D005956:Glucose-6-Phosphate Isomerase; D019278:Matrix Metalloproteinase 3; D019869:Phosphatidylinositol 3-Kinases; D000081082:Phosphoinositide-3 Kinase Inhibitors; D018808:Transcription Factor AP-1; D020742:rhoA GTP-Binding Protein; D019061:src-Family Kinases; C066737:RHOA protein, human; C511768:MMP3 protein, human