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- Title
[6]-Gingerol Prevents Disassembly of Cell Junctions and Activities of MMPs in Invasive Human Pancreas Cancer Cells through ERK/NF-κB/Snail Signal Transduction Pathway.
- Authors
Sung Ok Kim; Mi Ryeo Kim
- Abstract
To study the effects of [6]-gingerol, a ginger phytochemical, on tight junction (TJ) molecules, we investigated TJ tightening and signal transduction pathways in human pancreatic duct cell-derived cancer cell line PANC-1. The following methods were utilized: MTT assay to determine cytotoxicity; zymography to examine matrix metalloproteinase (MMP) activities; transepithelial electrical resistance (TER) and paracellular flux for TJ measurement; RT-PCR and immunoblotting for proteins related to TJ and invasion; and EMSA for NF-κB activity in PANC-1 cells. Results revealed that TER significantly increased and claudin 4 and MMP-9 decreased compared to those of the control. TJ protein levels, including zonula occludens (ZO-) 1, occludin, and E-cadherin, increased in [6]-gingerol-treated cells, which correlated with a decrease in paracellular flux and MMP activity. Furthermore, NF-κB/Snail nuclear translocation was suppressed via downregulation of the extracellular signal-regulated kinase (ERK) pathway in response to [6]-gingerol treatment. Moreover, treatment with U0126, an ERK inhibitor, completely blocked NF-κB activity. In conclusion, these findings demonstrate that [6]-gingerol regulates TJ-related proteins and suppresses invasion and metastasis through NF-κB/Snail inhibition via inhibition of the ERK pathway. Therefore, [6]-gingerol may suppress the invasive activity of PANC-1 cells.
- Subjects
SOUTH Korea; GINGER; PHYTOCHEMICALS; ACADEMIC medical centers; ANALYSIS of variance; CELL culture; IMMUNOBLOTTING; PANCREATIC tumors; POLYMERASE chain reaction; RESEARCH funding; T-test (Statistics); REVERSE transcriptase polymerase chain reaction; DATA analysis software; THERAPEUTICS
- Publication
Evidence-based Complementary & Alternative Medicine (eCAM), 2013, Vol 2013, p1
- ISSN
1741-427X
- Publication type
Article
- DOI
10.1155/2013/761852