Euclidean distance harmonic method for establishing theoretical MAPK/Erk signaling pathway in treated breast cancer line MCF-7

2007 ◽  
Vol 14 (1) ◽  
pp. 80-84
Author(s):  
Hong-xin ZHANG ◽  
Ying-hua LU ◽  
Jin-ling ZHANG
Keyword(s):  
Breast Cancer ◽  
Signaling Pathway ◽  
Euclidean Distance ◽  
Erk Signaling ◽  
Harmonic Method ◽  
Cancer Line ◽  
Treated Breast ◽  
Treated Breast Cancer ◽  
Mcf 7

Periplaneta Americana Extract Inhibits Proliferation and Motility of Human Breast Cancer Cells Through MAPK/ERK Signaling Pathway and Promotes Cell Apoptosis

2020 ◽  
Vol 19 (2) ◽  
pp. 194-198
Author(s):  
Xiaoying Wu ◽  
Zhe Sun ◽  
Bailing Shi ◽  
Xiaoli Zhang
Keyword(s):  
Breast Cancer ◽  
Cancer Cells ◽  
Signaling Pathway ◽  
Breast Cancer Cells ◽  
Periplaneta Americana ◽  
Erk Signaling ◽  
Antitumor Activities ◽  
Cancer Multiple ◽  
First Time ◽  
Mcf 7

Breast cancer is the most common malignant tumor among women, and its incidence is second only to cervical cancer in China. The search for natural products with antitumor activity is a potentially appealing strategy for the treatment of breast cancer. Multiple studies have shown that extracts of Periplaneta americana exhibit antitumor activities. However, there is no study on the effect of P. americana extracts on breast cancer. We have shown here for the first time that the extracts of P. americana inhibit survival of MCF-7 breast cancer cells via interference with MAPK/ERK signaling pathway.

Tumor associated macrophages antagonize antitumor effect of chemotherapy.

2017 ◽  
Vol 35 (7_suppl) ◽  
pp. 120-120
Author(s):  
Fei Chen ◽  
Shicheng Su ◽  
Erwei Song
Keyword(s):  
Breast Cancer ◽  
Cancer Cells ◽  
Breast Cancer Cells ◽  
Antitumor Effect ◽  
Specific Treatment ◽  
Mice Model ◽  
Tumor Associated Macrophages ◽  
Treated Breast ◽  
Treated Breast Cancer ◽  
Mcf 7

120 Background: Tumor associated macrophages play an essential role in tumor progression, promoting angiogenesis, immunosupression, invasion and metastasis. However, TAMs regulation of tumor responses to chemotherapy is complicated. In different type of treatment or tumor model, TAMs can either enhance or antagonize antitumor effect of chemotherapy. Methods: We isolated TAMs from breast cancer tissues, or PBMC stimulated with culture medium of mesenchymal breast cancer cells and cocultured with breast cancer cells MCF-7 for 6-10days. After cocultured with TAMs, we treated MCF-7 with docetaxel. In vivo, we use MCF-7 with or without TAMs to generate xenografts in NOD/SCID mice and treated with docetaxel. To testify if the antagonize was dependent on specific treatment, we also treated breast cancer cells with ciaplatin. Results: With coculture of TAMs, we obversed ruduced apoptosis of docetaxel treated breast cancer cells. In mice model, TAMs co-injection xenografts antagonized the antitumor effect of docetaxel.Consisted with previous results, TAMs coculture antagonize the antitumor effect of cisplatin, suggesting the antagonize of TAMs was independent on cell cycle. Conclusions: Collectively, our study indicated the antagonize of TAMs towards chemotherapy.

Integrated Quantitative Analysis of the Phosphoproteome and Transcriptome in Tamoxifen-resistant Breast Cancer*

2020 ◽  
Author(s):  
Lungwani Muungo
Keyword(s):  
Breast Cancer ◽  
High Rate ◽  
System Level ◽  
Clinical Samples ◽  
Transcriptome Data ◽  
Data Set ◽  
Reporter Assays ◽  
Treated Breast ◽  
Mcf 7 ◽  
Resistant Cells

Quantitative phosphoproteome and transcriptome analysisof ligand-stimulated MCF-7 human breast cancer cells wasperformed to understand the mechanisms of tamoxifen resistanceat a system level. Phosphoproteome data revealed thatWT cells were more enriched with phospho-proteins thantamoxifen-resistant cells after stimulation with ligands.Surprisingly, decreased phosphorylation after ligand perturbationwas more common than increased phosphorylation.In particular, 17?-estradiol induced down-regulation inWT cells at a very high rate. 17?-Estradiol and the ErbBligand heregulin induced almost equal numbers of up-regulatedphospho-proteins in WT cells. Pathway and motifactivity analyses using transcriptome data additionallysuggested that deregulated activation of GSK3? (glycogensynthasekinase 3?) and MAPK1/3 signaling might be associatedwith altered activation of cAMP-responsive elementbindingprotein and AP-1 transcription factors intamoxifen-resistant cells, and this hypothesis was validatedby reporter assays. An examination of clinical samples revealedthat inhibitory phosphorylation of GSK3? at serine 9was significantly lower in tamoxifen-treated breast cancerpatients that eventually had relapses, implying that activationof GSK3? may be associated with the tamoxifen-resistantphenotype. Thus, the combined phosphoproteomeand transcriptome data set analyses revealed distinct signal

Cytotoxic activity and anti-cancer potential of Ontario grown onion extracts against breast cancer cell lines

2018 ◽  
Vol 8 (3) ◽  
pp. 159 ◽  
Author(s):  
Meghan Fragis ◽  
Abdulmonem I. Murayyan ◽  
Suresh Neethirajan
Keyword(s):  
Breast Cancer ◽  
Cytotoxic Activity ◽  
Cell Lines ◽  
Cancer Cell ◽  
Breast Cancer Cell ◽  
Cancer Cell Lines ◽  
Breast Cancer Cell Lines ◽  
Cytotoxic Activities ◽  
Cancer Line ◽  
Mcf 7

Background: Breast cancer is the most commonly diagnosed cancer and the second leading cause of cancer deaths among Canadian women. Cancer management through changes in lifestyle, such as increased intake of foods rich in dietary flavonoids, have been shown to decrease the risk associated with breast, liver, colorectal, and upper-digestive cancers in epidemiologic studies. Onions are high in flavonoid content and one of the most common vegetables. Additionally, onions are used in most Canadian cuisines.Methods: We investigated the effect of five prominent Ontario grown onion (Stanley, Ruby Ring, LaSalle, Fortress, and Safrane) extracts on two subtypes of breast cancer cell lines: a triple negative breast cancer line MDA-MB-231 and an ER+ breast cancer line MCF-7.Results: These onion extracts elicited strong anti-proliferative, anti-migratory, and cytotoxic activities on both the cancer cell lines. Flavonoids present in these onion extracts induced apoptosis, cell cycle arrest in the G2/M phase, and a reduction in mitochondrial membrane potential at dose-dependent concentrations. Onion extracts were more effective against MDA-MB-231 compared to the MCF-7 cell line. Conclusion: In this study, we investigated the extracts synthesized from Ontario-grown onion varieties in inducing anti-migratory, cytostatic, and cytotoxic activities in two sub-types of human breast cancer cell lines. Anti-tumor activity of these extracts depends upon the varietal and can be formulated into nutraceuticals and functional foods for the wellbeing of cancer patients. Overall, the results suggest that onion extracts are a good source of flavonoids with anti-cancerous properties.Keywords: onion extracts; flavonoids; anti-proliferative; breast cancer; cytotoxic activity

Cytotoxic Constituents from the Bark of Erythrina poeppigiana Against the MCF-7 Breast Cancer Cell Lines

2020 ◽  
Vol 10 (3) ◽  
pp. 257-261
Author(s):  
Tati Herlina ◽  
Merlin ◽  
Mohd. Azlan ◽  
Unang Supratman
Keyword(s):  
Breast Cancer ◽  
Cytotoxic Activity ◽  
Chemical Structure ◽  
Breast Cancer Cell Lines ◽  
Erythrina Poeppigiana ◽  
Structure Activity ◽  
Cancer Line ◽  
Cytotoxic Compounds ◽  
Ic50 Values ◽  
Mcf 7

Background: Erythrina poeppigiana (Leguminosae) is a high-growing plant with an orange flower that is widely distributed in tropical and subtropical countries. This particular plant is widely used in traditional medicine for gynecological complications and the treatment of various diseases. There exists no previous information regarding cytotoxic compounds from this plant. Objective: This research is to isolate cytotoxic compounds from E. poeppigiana. Methods: The isolation step was carried out using a combination of chromatographic techniques to obtain isolated three compounds (1, 2, and 3). Results: The chemical structure of isolated compounds was elucidated by spectroscopic methods and identified as β-erythroidine (1), 8-oxo-β-erythroidine (2), and 8-oxo-α-erythroidine (3). Compounds (1-3) showed cytotoxic activity against MCF-7 breast cancer line with IC50 values of 36.8, 60.8 and 875.4 μM, respectively. Conclusion: Three compounds have been successfully isolated from Erythrina poeppigiana (Leguminosae), showing cytotoxic properties against MCF-7 breast cancer line. Structure-activity relationship studies showed that the presence of enone moiety on compound 1 can reduce its cytotoxic activity towards MCF-7 breast cancer line.

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