The effects of MAPK inhibitors on pyrogallol-treated Calu-6 lung cancer cells in relation to cell growth, reactive oxygen species and glutathione.

Abstract

Pyrogallol (PG) as a polyphenol compound can generate superoxide anion (O(2)(-)). Here, we investigated the effects of PG and/or MAPK inhibitors on Calu-6 lung cells in relation to cell growth, cell death, reactive oxygen species (ROS) and GSH levels. PG inhibited the growth of Calu-6 cells and induced apoptosis, which was accompanied by the loss of mitochondrial membrane potential (MMP; DeltaPsi(m)). While general ROS were decreased in PG-treated Calu-6 cells at 72h, intracellular O(2)(-) level including mitochondrial O(2)(-) was increased. PG also increased GSH depleted cell number in Calu-6 cells. MEK inhibitor slightly prevented cell growth inhibition, cell death and GSH depletion by PG. JNK inhibitor did not affect cell growth, cell death, MMP (DeltaPsi(m)) loss, ROS level and GSH deletion in PG-treated Calu-6 cells but p38 inhibitor mildly enhanced MMP (DeltaPsi(m)) loss, O(2)(-) level and GSH depletion in these cells. Conclusively, MEK inhibitor slightly prevented growth inhibition and death in PG-treated Calu-6 cells. Growth inhibition and death in Calu-6 cells by PG and/or MAPK inhibitors were partially related to O(2)(-) level and GSH content changes.

• Authors: Yong Hwan Han, Hwa Jin Moon, Bo Ra You, Woo Hyun Park
• Journal: Food and chemical toxicology : an international journal published for the British Industrial Biological Research Association (Food Chem Toxicol) Vol. 48 Issue 1 Pg. 271-6 (Jan 2010) ISSN: 1873-6351 [Electronic] England
• PMID: 19833163 (Publication Type: Journal Article, Research Support, Non-U.S. Gov't)
• Copyright: Copyright 2009 Elsevier Ltd. All rights reserved.

Chemical References

• Annexin A5
• Indicators and Reagents
• Protein Kinase Inhibitors
• Reactive Oxygen Species
• Pyrogallol
• Mitogen-Activated Protein Kinases
• Matrix Metalloproteinases
• Glutathione

Topics

• Annexin A5
• Blotting, Western
• Cell Line, Tumor
• Cell Proliferation (drug effects)
• Glutathione (metabolism)
• Humans
• Indicators and Reagents
• Lung Neoplasms (drug therapy, pathology)
• Matrix Metalloproteinases (analysis, metabolism)
• Mitogen-Activated Protein Kinases (antagonists & inhibitors)
• Protein Kinase Inhibitors (pharmacology)
• Pyrogallol (pharmacology)
• Reactive Oxygen Species (metabolism)