Celecoxib induced apoptosis against different breast cancer cell lines by down-regulated NF-κB pathway
- Department of Medical Oncology, The First Affiliated Hospital of Xi'an Jiaotong University, 227 Yanta West Road, Xi'an, Shaanxi Province 710061 (China)
- Department of Radiology, Shaanxi Provincial People's Hospital, 256 Youyi West Road, Xi'an, Shaanxi Province 710068 (China)
Inducible cyclooxgenase-2 (COX-2) is commonly overexpressed in breast tumors and is a target for cancer therapy. Here, we studied the effect of Celecoxib, a COX-2 inhibitor on two molecular breast cancer subtypes—MDA-MB-231 and SK-BR-3. Firstly, MDA-MB-231 and SK-BR-3 cells were treated with various concentration of Celecoxib for 24 and 48 h. Celecoxib-inhibition of NF-κB (p52 and p65) transcriptional activity and effect of Caspase 3 pathway were examined by western blotting. COX-2 mRNA was assessed by RT-PCR. Cell viability was evaluated by the 3-(4,5-dimethylthiazol-2-yl)-2,5- diphenyltetrazoliumbromide (MTT) assay. Both cell cycle profiles and apoptosis were analyzed using flow cytometry. We found that Celecoxib inhibited the proliferation of the MDA-MB-231 cell line in a dose-time dependent manner versus SK-BR-3 in a dose dependent manner only (p < 0.05). Celecoxib induced apoptosis of the MDA-MB-231 and SK-BR-3 cell lines in a dose-time dependent manner (p < 0.05) with more mean apoptotic cells in MDA-MB-231 than SK-BR-3. Significant cell-cycle arrest at the G1 phase in the MDA-MB-231 versus G2 phase in SK-BR-3 cell lines. NF-κB (p52 and p65) and COX-2 expressions were downregulated in a dose dependent manner, while Caspase 3 expression was upregulated in both cell lines. In this present study, our data indicated Celecoxib might affect each breast cancer subtype independently. Therefore, when using Celecoxib in treatment of breast cancer, it is imperative to consider the subtype of breast cancer on a molecular level. - Highlights: • We assumed and proved the correlation of levels of caspase-3, NF-κB (p52, p65) expression in the two types of breast cancer cells (i.e. MDA-MB-231 and SKBR3), and to determine whether exposure to different concentrations of Celecoxib has an impact in expression of these apoptotic and anti-apoptotic pathways respectively. • The difference in effect of Celecoxib was investigated in the two molecular subtypes of breast cancer cells i.e. MDA-MB-231 (ER–, PR–, HER2–) and SKBR3 (ER–, PR–, HER2+ Ki67 high) with regard to proliferation and cell cycle analysis. • In our study, we demonstrated that when using Celecoxib in treatment of breast cancer, it is imperative to consider the subtype of breast cancer on a molecular level.
- OSTI ID:
- 22719056
- Journal Information:
- Biochemical and Biophysical Research Communications, Vol. 490, Issue 3; Other Information: Copyright (c) 2017 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); ISSN 0006-291X
- Country of Publication:
- United States
- Language:
- English
Similar Records
Sinomenine inhibits breast cancer cell invasion and migration by suppressing NF-κB activation mediated by IL-4/miR-324-5p/CUEDC2 axis
Sulphoraphane, a naturally occurring isothiocyanate induces apoptosis in breast cancer cells by targeting heat shock proteins