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(-)-Epigallocatechin-3-gallate (EGCG) inhibits HGF-induced invasion and metastasis in hypopharyngeal carcinoma cells.

Authors
Lim, YC; Park, HY; Hwang, HS; Kang, SU; Pyun, JH; Lee, MH; Choi, EC; Kim, CH
Citation
Cancer letters, 271(1):140-152, 2008
Journal Title
Cancer letters
ISSN
0304-38351872-7980
Abstract
Hepatocyte growth factor (HGF) has recently attracted a considerable amount of attention as a stromal-derived mediator in tumor-stromal interactions, particularly because of its close involvement in cancer invasion and metastasis, and (-)-epigallocatechin-3-gallate (EGCG) can modulate the cell signaling associated with angiogenesis, metastasis, and migration of cancer cells. In the present study, we have investigated the effects of HGF on invasion and metastasis of hypopharyngeal carcinoma cells and the effect of EGCG on blocking HGF-induced invasion and metastasis in these cells. We found that HGF promoted the autophosphorylation of c-Met, HGF receptor, and that HGF-induced proliferation, colony dispersion, migration and invasion of tumors. We also observed that HGF enhanced the activity of matrix metalloproteinase (MMP)-9 and urokinase-type plasminogen activator (uPA) in hypopharyngeal carcinoma cells. In addition, HGF-induced the activation of Akt and Erk pathway as a downstreaming pathway of invasion. On the other hand, EGCG at physiologically relevant concentration (1 microM) suppressed HGF-induced tumor motility and MMP-9 and uPA activities, and the suppression of Akt and Erk pathway by EGCG was one of the downstream mechanisms to facilitate EGCG-induced anti-invasion effects. These results suggest that EGCG may serve as a therapeutic agent to inhibit HGF-induced invasion in hypopharyngeal carcinoma patients.
MeSH terms
Base SequenceBlotting, WesternCatechin/analogs & derivatives*Catechin/pharmacologyCell Line, TumorCell Proliferation/drug effectsDNA PrimersEnzyme InductionHepatocyte Growth Factor/antagonists & inhibitors*Hepatocyte Growth Factor/physiologyHumansHypopharyngeal Neoplasms/enzymologyHypopharyngeal Neoplasms/pathology*Matrix Metalloproteinase 2/biosynthesisMatrix Metalloproteinase 9/biosynthesisNeoplasm Invasiveness*Neoplasm Metastasis*Reverse Transcriptase Polymerase Chain Reaction
DOI
10.1016/j.canlet.2008.05.048
PMID
18632202
Appears in Collections:
Journal Papers > School of Medicine / Graduate School of Medicine > Otolaryngology
AJOU Authors
박, 헌이김, 철호
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