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Green Tea Extracts Inhibits HGF-Induced HNSCC Progression in vitro

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dc.contributor.author김, 철호-
dc.contributor.author임, 혜진-
dc.contributor.author강, 성운-
dc.contributor.author이, 하늘-
dc.contributor.author황, 혜숙-
dc.contributor.author윤, 용로-
dc.contributor.author김, 동현-
dc.description.abstractBackground & Objectives: Aberrant activation of hepatocyte growth factor (HGF) and its receptor, c-Met, has been known to be involved in many human cancer development and progression. During the search for an effective molecule inhibitor of HGF/ c-Met signaling, we have found that Epigallocatechin-3-gallate (EGCG) in green tea might inhibit HGF/c-Met signaling. Studies were performed to address whether EGCG inhibited HGF-dependent tumor proliferation and invasion in HNSCC.

Materials & Method: For EGCG inhibition of HGF/c-Met signaling, Western blot was performed. The proliferation of FaDu cells was assayed by counting the number of the cells after treatment by HGF 0, 10 ng/ml, EGCG 1 micrometer, EGCG 10 micrometer, HGF 10+EGCG 1 micrometer, HGF 10+EGCG 10 micrometer. The dispersion of cells was observed by measuring the separation and morphologic changes of the cells after treatment with HGF 0, 10 ng/ml HGF 10+EGCG 1 micrometer, HGF 10+EGCG 10 micrometer for 24 hours. Tumor cell migration was assessed by wound healing assay and tumor cell invasiveness was assessed by the membrane invasion assay.

Results: HGF treatment induced rapid activation of c-Met and EGCG inhibited HGF-induced c-Met signaling in FaDu cells. HGF significantly enhanced the growth of HNSCC cells and this phenomenon was inhibited by EGCG in a dose-dependant manner (p<0.05). EGCG inhibited HGF-induced scattering, migration, and invasion of HNSCC cells in a dose-dependent manner (p<0.05).

Conclusions: Inhibition of HGF/Met by EGCG leads to decreased proliferation, scattering, migration and invasion in vitro, suggesting the possible use of EGCG in HNSCC associated with down-regulation of HGF/Met signaling.
dc.titleGreen Tea Extracts Inhibits HGF-Induced HNSCC Progression in vitro-
dc.title.alternative하인두 편평세포암주의 증식과 침습을 유도하는 간세포성장인자에 대한 녹차추출물 억제효과-
dc.subject.keywordHepatocyte growth factor-
dc.subject.keywordHypopharyngeal cancer-
dc.subject.keywordEpigallocatechin-3-gallate (EGCG)-
dc.contributor.affiliatedAuthor김, 철호-
dc.type.localJournal Papers-
dc.citation.titleTaehan Ibi Inhukwa Hakhoe chi-
dc.citation.titleJournal of the Korean Otolaryngological Society-
dc.identifier.bibliographicCitationTaehan Ibi Inhukwa Hakhoe chi, 51(2):163-170, 2008-
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Journal Papers > School of Medicine / Graduate School of Medicine > Otolaryngology
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