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spermidine/рак на гърдата
Линкът е запазен в клипборда
Страница 1 от 109 резултата
Inorganic cation dependence of putrescine and spermidine transport in human breast cancer cells.
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The mechanism of polyamine uptake in mammalian cells is still poorly understood. The role of inorganic cations in polyamine transport was investigated in ZR-75-1 human breast cancer cells. Although strongly temperature dependent, neither putrescine nor spermidine uptake was mediated by a Na+
Induction of spermidine/spermine N1-acetyltransferase in breast cancer tissues treated with the polyamine analogue N1, N11-diethylnorspermine.
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OBJECTIVE
The polyamine analogue, N1, N11-diethylnorspermine (DENSpm), is currently being evaluated in clinical trials for the treatment of solid tumors. The response of solid tumors to this drug has been associated with superinduction of the polyamine catabolic enzyme, spermine/spermidine
Growth-independent induction of spermidine transport by IL-4 and IL-13 in ZR-75-1 human breast cancer cells.
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Polyamine transport is strongly induced by insulin and estradiol (E2) in ZR-75-1 human breast cancer cells. Because signal transduction mechanisms of insulin and interleukin-4 (IL-4) partly overlap, we have compared the ability of these agents as well as that of interleukin-13 (IL-13), a cytokine
Hormonal and feedback regulation of putrescine and spermidine transport in human breast cancer cells.
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The properties and regulation of the mammalian polyamine transport system are still poorly understood. In estrogen-responsive ZR-75-1 human breast cancer cells, which display low polyamine biosynthetic activity, putrescine and spermidine were internalized with high affinity (Km = 3.7 and 0.5 microM,
Pharmacometabolomics study identifies circulating spermidine and tryptophan as potential biomarkers associated with the complete pathological response to trastuzumab-paclitaxel neoadjuvant therapy in HER-2 positive breast cancer.
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Defining biomarkers that predict therapeutic effects and adverse events is a crucial mandate to guide patient selection for personalized cancer treatments. In the present study, we applied a pharmacometabolomics approach to identify biomarkers potentially associated with pathological complete
[Protective effect of DNA-spermidine (DA-51) against radiation-induced leukopenia -a study on breast cancer patients receiving postoperative prophylactic irradiation (author's transl)].
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[Protective effect of DNA-spermidine (DA-51) against radiation-induced leukopenia. (Preliminary report)--a study on breast cancer patients receiving prophylactic irradiation (author's transl)].
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Targeting polyamine biosynthetic pathway through RNAi causes the abrogation of MCF 7 breast cancer cell line.
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The diamine putrescine and polyamines, spermidine (triamine) and spermine (tetraamine) are small organic polycations that play an indispensable role in key cellular processes such as the regulation of growth, differentiation, and macromolecular functions. Elevated levels of polyamines (PAs) have
Role of ornithine decarboxylase in regulation of estrogen receptor alpha expression and growth in human breast cancer cells.
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Our previous studies demonstrated that specific polyamine analogues, oligoamines, down-regulated the activity of a key polyamine biosynthesis enzyme, ornithine decarboxylase (ODC), and suppressed expression of estrogen receptor alpha (ERα) in human breast cancer cells. However, the mechanism
Activation of cyclin D1 by estradiol and spermine in MCF-7 breast cancer cells: a mechanism involving the p38 MAP kinase and phosphorylation of ATF-2.
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Estradiol (E2) and the naturally occurring polyamines (putrescine, spermidine, and spermine) play important roles in breast cancer cell growth and differentiation. We examined the effects of E2 and spermine on the phosphorylation and DNA binding of activating transcription factor-2 (ATF-2) in MCF-7
Synthesis, screening and pro-apoptotic activity of novel acyl spermidine derivatives on human cancer cell lines.
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The polyamines putrescine, spermidine, and spermine are polycationic, alkyl polyamines which play a significant role in eukaryotic cell proliferation. The polyamine metabolism and function are dysregulated in tumor cells making them an attractive therapeutic target by employing polyamine analogs.
Increased thioredoxin-1 inhibits SSAT expression in MCF-7 human breast cancer cells.
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Spermidine/spermine N(1)-acetyltransferase (SSAT) regulates polyamine catabolism. Thioredoxin-1 (Trx-1) is a redox protein that is overexpressed in human cancer leading to increased cell proliferation, decreased apoptosis, and decreased patient survival. We report that SSAT mRNA expression is
Involvement of apoptosis and cyclin D1 gene repression in growth inhibition of T-47D human breast cancer cells by methylglyoxal bis(cyclopentylamidinohydrazone).
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Polyamines are considered to be important intracellular molecules for the proliferation of the cancer cells. In this study, effects of methylglyoxal bis(cyclopentylamidinohydrazone) (MGBCP), a potent inhibitor of the polyamine biosynthetic pathway, on the growth and cell cycle of T-47D human breast
Growth inhibition of hormone-responsive and -resistant human breast cancer cells in culture by N1, N12-bis(ethyl)spermine.
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Previous studies have documented differential sensitivity of human lung cancer and melanoma cell lines to the cytotoxic effects of N1, N12-bis(ethyl)spermine (BESpm). We show here that BESpm can significantly inhibit the growth of six human breast cancer cell lines with 50% inhibitory concentration
Correlation between polyamines and apoptosis among Egyptian breast cancer patients.
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OBJECTIVE
The polyamines putrescine, spermidine, and spermine, play an important role in cell proliferation, differentiation, and transformation. The aim of this study is to correlate the polyamines with apoptosis and clinico-pathologic events in Egyptian breast cancer patients.
METHODS
PUT, SPD,
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