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Depression: 21st Century Solutions + The Dark Side of Wheat

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Abstract Title:

Anti-metastatic effects of ginsenoside Rd via inactivation of MAPK signaling and induction of focal adhesion formation.

Abstract Source:

Phytomedicine. 2012 Feb 15 ;19(3-4):284-92. Epub 2011 Oct 5. PMID: 21982435

Abstract Author(s):

Ji-Hae Yoon, Yeo-Jin Choi, Seon-Woo Cha, Seong-Gene Lee

Article Affiliation:

Ji-Hae Yoon

Abstract:

Ginsenoside Rd is a protopanaxadiol-type ginsenoside found in ginseng and is the active ingredient in several Oriental herbal medicines. We investigated the effects of ginsenoside Rd on tumor invasion and metastasis in the human hepatocellular carcinoma HepG2 and its possible mechanism of action. HepG2 cells were treated with ginsenoside Rd at different concentrations. Scratch wound and Boyden chamber assays were used to determine the effects of ginsenoside Rd on the migration and invasiveness of HepG2 cells, respectively. The molecular mechanisms by which ginsenoside Rd inhibited the invasion and migration of HepG2 cells were investigated by RT-PCR, Western blotting, gelatin zymography, promoter assay, and treatment with inhibitors of MAPK signaling. Immunofluorescence analysis was conducted to evaluate the effect of ginsenoside Rd on focal adhesion formation in HepG2 cells. Treatment with ginsenoside Rd dose- and time-dependently inhibited the migration and invasion of HepG2 cells. It achieved this by reducing the expression of MMP-1, MMP-2, and MMP-7, by blocking MAPK signaling by inhibiting the phosphorylation of ERK and p38 MAPK, by inhibition of AP-1 activation, and by inducing focal adhesion formation and modulating vinculin localization and expression. Treatment of HepG2 cells with ginsenoside Rd significantly inhibited metastasis, most likely by blocking MMP activation and MAPK signaling pathways involved in cancer cell migration. These findings may be useful for the development of novel chemotherapeutic agents for the treatment of malignant cancers.

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Sayer Ji
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Depression: 21st Century Solutions + The Dark Side of Wheat

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