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Apoptotic Effects of Two COX-2 Inhibitors on Breast Adenocarcinoma Cells Through COX-2 Independent Pathway


Norouzi, M and Norouzi, S and Amini, M and Amanzadeh, A and Irian, S and Salimi, M, Apoptotic Effects of Two COX-2 Inhibitors on Breast Adenocarcinoma Cells Through COX-2 Independent Pathway, Journal of cellular biochemistry, 116, (1) pp. 81-90. ISSN 0730-2312 (2015) [Refereed Article]

Copyright Statement

2014 Wiley Periodicals

DOI: doi:10.1002/jcb.24944


Recently, much effort has been directed toward the search for compounds that influence apoptosis and to understand their mechanisms of action. Cyclooxygenase (COX)-2 inhibitors may induce apoptosis through the COX-2-independent mechanism via a mitochondrial pathway. In view of the reported antiproliferative activities of two COX-2 inhibitor derivatives (1, 2) in breast cancer cells (MCF-7), the present study was undertaken to evaluate the potential of these compounds to induce apoptosis and unravel the associated mechanisms. The apoptotic activities of the two compounds were assessed using flow cytometry, fluorescence microscope, and Western blot analysis. Compounds 1 and 2-treated MCF-7 cells revealed the apoptotic cell death, as confirmed by the changes in nuclear morphology and the increased annexin-V/PI staining. Elevation of Bax to Bcl-2 ratio and activation of caspase-3 were found to be associated with the initiation of apoptosis induced by compound 1. Further investigation showed that compounds 1 and 2 inhibited NF-κB, FHC, and ERK activation, while no dramatic change was revealed in c-Myc and EGR-1 levels. Our data suggest that induction of apoptosis by compounds 1 and 2 is not associated with COX-2 expression and occurs through the NF-κB pathway, which sequentially inhibits P-ERK and FHC expression.

Item Details

Item Type:Refereed Article
Research Division:Biological Sciences
Research Group:Biochemistry and cell biology
Research Field:Signal transduction
Objective Division:Health
Objective Group:Clinical health
Objective Field:Clinical health not elsewhere classified
UTAS Author:Norouzi, S (Mrs Shaghayegh Norouzi)
ID Code:111016
Year Published:2015
Web of Science® Times Cited:14
Deposited By:Health Sciences
Deposited On:2016-08-25
Last Modified:2016-11-09

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