Autocrine motility factor stimulates the invasiveness of malignant cells as well as up-regulation of matrix metalloproteinase-3 expression via a MAPK pathway
Abstract
The autocrine motility factor (AMF) is a multifunctional protein that is involved in tumor progression including enhanced invasiveness via induction of matrix metalloproteinase-3 (MMP3). The increase in MMP3 was found in an AMF-high production tumor cell line, and c-Jun, c-Fos and mitogen-activated protein kinases (MAPKs) were also highly phosphorylated compared with the parent line. AMF stimulation induced the rapid phosphorylation of the cellular MAPK cascade and MMP3 secretion, which was blocked using a specific MAPK inhibitor. Results of this study suggest that AMF stimulation stimulates MMP3 expression via a MAPK signaling pathway.
Abbreviations: AMF, autocrine motility factor, AMFR, Autocrine motility factor receptor, gp78, 78
kDa glyco protein, MMP3, matrix metalloproteinase-3, MAPK, mitogen-activated protein kinase, JNK, c-Jun N-terminal kinase, ERK, extracellular signal-regulated kinases, PKC, protein kinase C, PI3K, phosphatidylinositol 3-kinase, AP-1, activating protein-1, TRE, TPA response element
Keywords: AMF, MMP3, MAPK, JNK, Metastasis
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PII: S0014-5793(08)00402-X
doi:10.1016/j.febslet.2008.05.005
© 2008 Federation of European Biochemical Societies
