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

Abstract：

:Antimycin A (AMA) inhibits succinate oxidase, NADH oxidase, and mitochondrial electron transport chain between cytochrome b and c. We recently demonstrated that AMA inhibited the growth of Calu-6 lung cancer cells through apoptosis. Here, we investigated the effects of AMA and/or MAPK inhibitors on Calu-6 lung cancer cells in relation to cell growth, cell death, reactive oxygen species (ROS), and GSH levels. Treatment with AMA inhibited the growth of Calu-6 cells at 72 h. AMA-induced apoptosis was accompanied by the loss of mitochondrial membrane potential (MMP; Delta Psi m). While ROS were decreased in AMA-treated Calu-6 cells, O2.- among ROS was increased. AMA also induced GSH depletion in Calu-6 cells. Treatment with MEK inhibitor intensified cell death, MMP (Delta Psi m) loss, and GSH depletion in AMA-treated Calu-6 cells. JNK inhibitor also increased cell death, MMP (Delta Psi m) loss, and ROS levels in these cells. Treatment with p38 inhibitor magnified cell growth inhibition by AMA and increased cell death, MMP (Delta Psi m) loss, ROS level, and GSH depletion in AMA-treated cells. Conclusively, all the MAPK inhibitors slightly intensified cell death in AMA-treated Calu-6 cells. The changes of ROS and GSH by AMA and/or MAPK inhibitors were in part involved in cell growth and death in Calu-6 cells.

journal_name

Mol Cell Biochem

journal_title

Molecular and cellular biochemistry

authors

Han YH,Park WH

doi

10.1007/s11010-009-0222-2

subject

Has Abstract

pub_date

2010-01-01 00:00:00

pages

211-9

issue

1-2

eissn

0300-8177

issn

1573-4919

journal_volume

333

pub_type

杂志文章

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