scholarly journals Estrogen-Responsive Genes Overlap with Triiodothyronine-Responsive Genes in a Breast Carcinoma Cell Line

2014 ◽  
Vol 2014 ◽  
pp. 1-7 ◽  
Author(s):  
Nancy Bueno Figueiredo ◽  
Sílvia Helena Cestari ◽  
Sandro José Conde ◽  
Renata Azevedo Melo Luvizotto ◽  
Maria Teresa De Sibio ◽  
...  
Keyword(s):  
Breast Carcinoma ◽  
Dna Microarrays ◽  
Expression Patterns ◽  
Breast Adenocarcinoma ◽  
Breast Carcinoma Cell Line ◽  
Expression Of Genes ◽  
Adenocarcinoma Cells ◽  
Pericentriolar Material ◽  
Mcf 7

It has been well established that estrogen plays an important role in the progression and treatment of breast cancer. However, the role of triiodothyronine (T3) remains controversial. We have previously shown its capacity to stimulate the development of positive estrogen receptor breast carcinoma, induce the expression of genes (PR, TGF-alpha) normally stimulated by estradiol (E2), and suppress genes (TGF-beta) normally inhibited by E2. Since T3regulates growth hormones, metabolism, and differentiation, it is important to verify its action on other genes normally induced by E2. Therefore, we used DNA microarrays to compare gene expression patterns in MCF-7 breast adenocarcinoma cells treated with E2and T3. Several genes were modulated by both E2and T3in MCF-7 cells (Student’st-test,P<0.05). Specifically, we found eight genes that were differentially expressed after treatment with both E2and T3, includingamphiregulin, fibulin 1, claudin 6, pericentriolar material 1, premature ovarian failure 1B, factor for adipocyte differentiation-104, sterile alpha motif domain containing 9, and likely ortholog of rat vacuole membrane protein 1(fold change > 2.0, pFDR < 0.05). We confirmed our microarray results by real-time PCR. Our findings reveal that certain genes in MCF-7 cells can be regulated by both E2and T3.

Role of DNA hypomethylation in the development of the resistance to doxorubicin in human MCF-7 breast adenocarcinoma cells

2006 ◽  
Vol 231 (1) ◽  
pp. 87-93 ◽  
Author(s):  
Vasil F. Chekhun ◽  
Galina I. Kulik ◽  
Olga V. Yurchenko ◽  
Volodymyr P. Tryndyak ◽  
Igor N. Todor ◽  
...  
Keyword(s):  
Breast Adenocarcinoma ◽  
Dna Hypomethylation ◽  
Adenocarcinoma Cells ◽  
Resistance To Doxorubicin ◽  
Mcf 7

The role of protein oxidative modification and the cellular redox status in realization of apoptosis of MCF-7 breast adenocarcinoma cells

2016 ◽  
Vol 43 (5) ◽  
pp. 385-389
Author(s):  
E. V. Shakhristova ◽  
E. A. Stepovaya ◽  
N. V. Ryazantseva ◽  
O. L. Nosareva ◽  
V. D. Yakushina ◽  
...  
Keyword(s):  
Redox Status ◽  
Oxidative Modification ◽  
Breast Adenocarcinoma ◽  
Cellular Redox ◽  
Protein Oxidative Modification ◽  
Adenocarcinoma Cells ◽  
Mcf 7

Distinct gene expression patterns in chronic lymphocytic leukemia defined by usage of specific VH genes

Blood ◽  
2006 ◽  
Vol 107 (5) ◽  
pp. 2090-2093 ◽  
Author(s):  
Dirk Kienle ◽  
Axel Benner ◽  
Alexander Kröber ◽  
Dirk Winkler ◽  
Daniel Mertens ◽  
...  
Keyword(s):  
Gene Expression ◽  
Chronic Lymphocytic Leukemia ◽  
Expression Patterns ◽  
Gene Expression Pattern ◽  
Cell Receptor ◽  
Lymphocytic Leukemia ◽  
Expression Of Genes ◽  
Vh Genes ◽  
Signaling Activation

The mutation status and usage of specific VH genes such as V3-21 and V1-69 are potentially independent pathogenic and prognostic factors in chronic lymphocytic leukemia (CLL). To investigate the role of antigenic stimulation, we analyzed the expression of genes involved in B-cell receptor (BCR) signaling/activation, cell cycle, and apoptosis control in CLL using these specific VH genes compared to VH mutated (VH-MUT) and VH unmutated (VH-UM) CLL not using these VH genes. V3-21 cases showed characteristic expression differences compared to VH-MUT (up: ZAP70 [or ZAP-70]; down: CCND2, P27) and VH-UM (down: PI3K, CCND2, P27, CDK4, BAX) involving several BCR-related genes. Similarly, there was a marked difference between VH unmutated cases using the V1-69 gene and VH-UM (up: FOS; down: BLNK, SYK, CDK4, TP53). Therefore, usage of specific VH genes appears to have a strong influence on the gene expression pattern pointing to antigen recognition and ongoing BCR stimulation as a pathogenic factor in these CLL subgroups.

scholarly journals Proteomics analysis of a novel compound: Cyclic RGD in breast carcinoma cell line MCF-7

PROTEOMICS ◽  
2006 ◽  
Vol 6 (10) ◽  
pp. 2991-3000 ◽  
Author(s):  
Hsueh-Fen Juan ◽  
I-Hsiu Wang ◽  
Tsui-Chin Huang ◽  
Jia-Je Li ◽  
Shui-Tein Chen ◽  
...  
Keyword(s):  
Breast Carcinoma ◽  
Cell Line ◽  
Carcinoma Cell ◽  
Carcinoma Cell Line ◽  
Breast Carcinoma Cell Line ◽  
Proteomics Analysis ◽  
Mcf 7

scholarly journals Change in the Expression of BAK، FAS، BAX، TNF-A، BCL-2 and Survivin Apoptosis Genes of the Human Breast Adenocarcinoma Cells (MCF-7) by Staphylococcal Enterotoxin B

2019 ◽  
Author(s):  
Sara Afzali ◽  
Abbas Doosti ◽  
Mansour Heidari ◽  
Nahid Babaei ◽  
Parvaneh Keshavarz
Keyword(s):  
Staphylococcal Enterotoxin ◽  
Breast Adenocarcinoma ◽  
Control Group ◽  
Staphylococcal Enterotoxin B ◽  
Type B ◽  
Human Breast ◽  
Human Breast Adenocarcinoma ◽  
Adenocarcinoma Cells ◽  
Enterotoxin B ◽  
Mcf 7

Introduction: Breast cancer is one of the most prevalent malignancies among women. Patients whose suffering from this condition, as a result of the use of conventional therapies often have a poor response to treatment and the relapse among them is frequent. In this study, the effects of staphylococcal enterotoxin type B on BAK، FAS، BAX، TNF-a، BCL-2 و Survivin genes expression in human breast adenocarcinoma cells (MCF-7) was examined. Staphylococcal enterotoxin B is a powerful member of the Staphylococcus aureus toxins family, which is known as an anticancer agent with potential for killing cancer cells. Methods: The experimental study was carried out at the Biotechnology Research Center of Islamic Azad University, Shahrekord Branch. By using Lipofectamine 2000 reagent, MCF-7  cells transfected with the pcDNA3.1(+)-seb (recombinant) and  pcDNA3.1(+) (non-recombinant)  plasmids and were selected by culturing in a selective medium of RPMI- 1640 containing 600 μg / mL antibiotic G418. Then, the expression of BAK, FAS, BAX, TNF-a, BCL-2, and Survivin genes in transfected cells were analyzed by real time PCR. Student's t-test, SPSS Inc., Chicago, IL; Version 16 and also Excel program for statistical analysis were used. Results: The results of this study indicated that staphylococcal enterotoxin type B (SEB) remarkably changes the expression of apoptotic related genes in MCF-7 cell line. It was observed a significant increase in the expression of BAK, FAS, BAX, and TNF-a genes, the expression of BCL-2 and Survivin genes significantly decreased compared to the control group (P=0/032). Conclusion: Staphylococcal enterotoxin type B has an inhibitory effect on the growth, proliferation and invasion of breast adenocarcinoma cells through altering the expression of the genes involved in the apoptosis process. Therefore, it seems that there is a good research field for the use of this toxin in the control and treatment of human breast adenocarcinoma.

beta-Carotene is Accumulated, Metabolized, and Possibly Converted to Retinol in Human Breast Carcinoma Cells (MCF-7)

2004 ◽  
Vol 74 (3) ◽  
pp. 171-177 ◽  
Author(s):  
Torres ◽  
Borojevic ◽  
Trugo
Keyword(s):  
Breast Carcinoma ◽  
Beta Carotene ◽  
Human Breast Carcinoma ◽  
Breast Carcinoma Cell Line ◽  
Human Breast ◽  
Cell Extracts ◽  
Human Breast Carcinoma Cells ◽  
Dose Dependent ◽  
Mcf 7 ◽  
In Cells

The aims of the present study were to investigate the uptake, accumulation, and metabolism of beta-carotene by the human breast carcinoma cell line MCF-7. Beta-carotene uptake was time- and dose-dependent, and independent of cell polarity. Beta-carotene accumulation in cells was linear as a function of its concentration in medium (1.3–4.1 mumol/L). It was accompanied by increasing amounts of retinol, which accumulated in cells following a sigmoid pattern, and by other four putative metabolites. Beta-apocarotenals, epoxides, endoperoxides, retinal, retinoic acid, and retinyl esters were not detected in cell extracts. Beta-carotene and its metabolites did not induce alterations in cell morphology or subcellular localization of epithelial mucins. Beta-carotene and retinol were released from cells that had previously accumulated beta-carotene, and were further incubated in beta-carotene- and retinol-free medium, but intracellular retinol content remained constant whereas b-carotene decreased. In conclusion, beta-carotene added to culture medium in physiological concentrations (1–6 mumol/L) is taken up and metabolized in MCF-7 cells, and is possibly converted to retinol.

Sign in / Sign up

Export Citation Format

Share Document