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ethanolamine/brystkræft
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Lipid metabolism in T47D human breast cancer cells: 31P and 13C-NMR studies of choline and ethanolamine uptake.
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31P and 13C-NMR were used to determine the kinetics of choline and ethanolamine incorporation in T47D clone 11 human breast cancer cells grown as small (150 microns) spheroids. Spheroids were perfused inside the spectrometer with 1,2-13C-labeled choline or 1,2-13C-labeled ethanolamine (0.028 mM) and
Lipid metabolism in large T47D human breast cancer spheroids: 31P- and 13C-NMR studies of choline and ethanolamine uptake.
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31P- and 13C-NMR were used to determine the kinetics of choline and ethanolamine incorporation in T47D clone 11 human breast cancer cells grown as large (300 microns) spheroids. Spheroids were perfused inside the spectrometer with 1,2-13C-labeled choline or ethanolamine (0.028 mM) and the buildup of
Breast cancer cells adapt to metabolic stress by increasing ethanolamine phospholipid synthesis and CTP:ethanolaminephosphate cytidylyltransferase-Pcyt2 activity.
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The significance of phosphatidylethanolamine (PE) in breast cancer cell metabolism was investigated under stress conditions caused by serum deficiency. Serum deficient MCF-7 cells adapt to stress conditions by increasing synthesis and content of PE and diacylglycerol (DAG). The biosynthesis of PE
Analysis of cytosolic phosphoethanolamine and ethanolamine and their correlation with prognostic factors in breast cancer.
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Availability of accurate prognostic factors is vital in making decisions on cancer therapy. We have measured the cytosolic contents of phosphoethanolamine and ethanolamine in tumor tissues of 53 breast cancer patients in an attempt to explore the possibility that these amines could be used as
A new serum-free method of measuring growth factor activities for human breast cancer cells in culture.
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Growth of the MCF-7, T47D, and ZR-75-1 human breast cancer cells was established in a serum-free defined medium (MOM-1) composed of a 1:1 (vol/vol) mixture of Ham's F12 medium and Dulbecco's modified Eagle's medium containing 15 mM HEPES (pH 7.2), 2 mM 1-glutamine, 20 micrograms/ml glutathione, 10
Production of human-human hybridomas secreting monoclonal antibodies reactive to breast cancer cell lines.
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We produced human-human hybridomas by fusing lymph node lymphocytes of breast cancer patients with a fusion partner, HO-323 cells, in the presence of 50% polyethylene glycol, and screened hybridomas producing monoclonal antibody (MoAb) reactive to a breast cancer cell line, MCF-7. Among 11
Investigation of breast cancer using two-dimensional MRS.
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Proton (1H) MRS enables non-invasive biochemical assay with the potential to characterize malignant, benign and healthy breast tissues. In vitro studies using perchloric acid extracts and ex vivo magic angle spinning spectroscopy of intact biopsy tissues have been used to identify detectable
PEGylated liposomes of anastrozole for long-term treatment of breast cancer: in vitro and in vivo evaluation.
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The aim of present study was to develop conventional and PEGylated (long circulating), liposomes containing anastrozole (ANS) for effective treatment of breast cancer. ANS is a third-generation non-steroidal aromatase inhibitor of the triazole class used for the treatment of advanced and late-stage
Heterologous regulation of inositol lipid hydrolysis in human breast cancer cells by oestradiol 17 beta, bombesin and fluoroaluminate.
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Inositol lipid turnover has been implicated in the action of oestradiol 17 beta and bombesin-related peptides on the human breast cancer cell line MCF-7. In the present study, in addition to measuring inositol lipid turnover as indicated by inositol monophosphate (IP) accumulation, we have also
Phospholipids and fatty acids in breast cancer tissue.
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The fatty acid composition of fractionated phospholipids and neutral lipids was analyzed in human breast cancer tissues and the surrounding, apparently healthy tissue. In the cancer tissues the relative amounts of unsaturated fatty acids were increased in all the phospholipid subclasses analyzed.
Silencing of the glycerophosphocholine phosphodiesterase GDPD5 alters the phospholipid metabolite profile in a breast cancer model in vivo as monitored by (31) P MRS.
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Abnormal choline phospholipid metabolism is an emerging hallmark of cancer, which is implicated in carcinogenesis and tumor progression. The malignant metabolic phenotype is characterized by high levels of phosphocholine (PC) and relatively low levels of glycerophosphocholine (GPC) in aggressive
Functional metabolomics uncovers metabolic alterations associated to severe oxidative stress in MCF7 breast cancer cells exposed to ascididemin.
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Marine natural products are a source of promising agents for cancer treatment. However, there is a need to improve the evaluation of their mechanism of action in tumors. Metabolomics of the response to anti-tumor agents is a tool to reveal candidate biomarkers and metabolic targets. We used
Mechanisms of estrogen action on the proliferation of MCF-7 human breast cancer cells in an improved culture medium.
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The effects of 17 beta-estradiol and tamoxifen (TAM) on the proliferation of responsive MCF-7 and unresponsive HBC-4 human breast cancer cells were studied in a defined culture medium containing insulin (2 micrograms/ml), transferrin (2 micrograms/ml), ethanolamine (2 microM), and selenite (25 nM).
Tamoxifen inhibits uptake and metabolism of ethanolamine and choline in multidrug-resistant, but not in drug-sensitive, MCF-7 human breast carcinoma cells.
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Tamoxifen (TAM), a widely used agent in the hormonal therapy of breast cancer, is also an antagonist of P-glycoprotein (P-gp), a cell surface protein which confers drug resistance to cells. Here we report that in an estrogen receptor-deficient multidrug-resistant subline of MCF-7 human breast
Metabolomics reveals metabolic targets and biphasic responses in breast cancer cells treated by curcumin alone and in association with docetaxel.
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BACKGROUND
Curcumin (CUR) has deserved extensive research due to its anti-inflammatory properties, of interest in human diseases including cancer. However, pleiotropic even paradoxical responses of tumor cells have been reported, and the mechanisms of action of CUR remain uncompletely
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