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spermine/tumore della mammella
Il collegamento viene salvato negli appunti
Pagina 1 a partire dal 129 risultati
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
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
Clinical significance of serum spermine in breast cancer.
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The diagnostic significance of three polyamines (putrescine, spermidine and spermine), of carcinoembryonic antigen and of phosphoglucose isomerase have been compared in sera of patients with breast cancer or benign breast disease and normal age matched controls. The results of the study indicate
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
Comparison of three cytotoxicity tests in the evaluation of the cytotoxicity of a spermine analogue on human breast cancer cell lines.
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Using three cytotoxicity assays, we have investigated the effect of the spermine analogue N1,N11-diethylnorspermine (DENSPM) on four human breast cancer cell lines with different known genetic lesions. Cells were seeded in 96 well plates and DENSPM was added 24 h later to give final concentrations
Growth, morphological and biochemical changes in oxa-spermine derivative-treated MCF-7 human breast cancer cells.
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The growth inhibitory properties of two oxa-spermine derivatives named compound 1 and compound 2, representatives of a novel type of polyamine derivatives, were studied. Dose-response growth inhibitory curves obtained after 48h drug exposure demonstrated the much higher cytotoxic activity of
Antiproliferative effect of spermine depletion by N-cyclohexyl-1,3-diaminopropane in human breast cancer cells.
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Spermine is often the most abundant polyamine in human tumors such as breast carcinomas. However, its specific role in tumor biology is still uncertain, since inhibitors of ornithine decarboxylase such as alpha-difluoromethylornithine depress cell growth while leaving spermine content mostly
Spermine oxidase SMO(PAOh1), Not N1-acetylpolyamine oxidase PAO, is the primary source of cytotoxic H2O2 in polyamine analogue-treated human breast cancer cell lines.
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The induction of polyamine catabolism and its production of H2O2 have been implicated in the response to specific antitumor polyamine analogues. The original hypothesis was that analogue induction of the rate-limiting spermidine/spermine N1-acetyltransferase (SSAT) provided substrate for the
Spermine oxidase (SMO) activity in breast tumor tissues and biochemical analysis of the anticancer spermine analogues BENSpm and CPENSpm.
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BACKGROUND
Polyamine metabolism has a critical role in cell death and proliferation representing a potential target for intervention in breast cancer (BC). This study investigates the expression of spermine oxidase (SMO) and its prognostic significance in BC. Biochemical analysis of Spm analogues
Effects of a bis(benzyl)spermine analog on MCF-7 breast cancer cells in culture and nude mice xenografts.
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We studied the effects of a polyamine analog, N,N'-bis{3-[(phenylmethyl)amino]propyl}-1,7-diaminoheptane (MDL 27695) on MCF-7 cells, as part of an attempt to develop new drugs for breast cancer treatment. Using [H-3]-thymidine incorporation assay and long-term growth curves, we found that MDL 27695
Synthesis and application of magnetite dextran-spermine nanoparticles in breast cancer hyperthermia.
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Cancer treatment has been very challenging in recent decades. One of the most promising cancer treatment methods is hyperthermia, which increases the tumor temperature (41-45 °C). Magnetic nanoparticles have been widely used for selective targeting of cancer cells. In the present study, magnetic
Association between plasma diacetylspermine and tumor spermine synthase with outcome in triple negative breast cancer.
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Functionalized magnetic dextran-spermine nanocarriers for targeted delivery of doxorubicin to breast cancer cells.
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In recent decades, targeted drug delivery systems for breast cancer treatment emerged as an ideal alternative and promising solution to reduce systemic side effects of chemotherapeutic agents. In this study, the preparation and characterization of cationic doxorubicin (DOX) loaded magnetic
Nano-Graphene Oxide-supported APTES-Spermine, as Gene Delivery System, for Transfection of pEGFP-p53 into Breast Cancer Cell Lines
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Purpose: Genetic diseases can be the result of genetic dysfunctions that happen due to some inhibitory and/or environmental risk factors, which are mostly called mutations. One of the most promising treatments for these diseases is
Biologic activity of a dinuclear Pd(II)-spermine complex toward human breast cancer.
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A dinuclear palladium-based complex (Pd(2) -Spm) was synthesized and compared with cisplatin (cDDP) on two different human breast cancer cell lines (MCF-7 and MDA-MB-231) as well as toward an untransformed cell line (BJ fibroblasts). The results obtained show that Pd(2) -Spm is more effective
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