pyrrolidine/borstkanker

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Fetal bovine serum requirement for pyrrolidine dithiocarbamate-induced apoptotic cell death of MCF-7 breast tumor cells.

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Pyrrolidine dithiocarbamate (PDTC) can form a complex with metal ions and then act as a proteasome inhibitor, which leads to tumor cell apoptosis, and could therefore be developed as an anticancer agent. In our efforts to find factors that induce PDTC-mediated apoptosis of tumor cells, the effect of

Oral administration of pyrrolidine dithiocarbamate (PDTC) inhibits VEGF expression, tumor angiogenesis, and growth of breast cancer in female mice.

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The progression of breast cancer is associated with oxidative stress. However, the effects of pyrrolidine dithiocarbamate (PDTC), a known antioxidant, on the development of breast cancer are poorly understood. The present study evaluates the effects of PDTC on tumor growth, the expression of

Clioquinol and pyrrolidine dithiocarbamate complex with copper to form proteasome inhibitors and apoptosis inducers in human breast cancer cells.

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BACKGROUND A physiological feature of many tumor tissues and cells is the tendency to accumulate high concentrations of copper. While the precise role of copper in tumors is cryptic, copper, but not other trace metals, is required for angiogenesis. We have recently reported that organic

Spiro[pyrrolidine-3, 3´-oxindole] as potent anti-breast cancer compounds: Their design, synthesis, biological evaluation and cellular target identification.

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The spiro[pyrrolidine-3, 3´-oxindole] moiety is present as a core in number of alkaloids with substantial biological activities. Here in we report design and synthesis of a library of compounds bearing spiro[pyrrolidine-3, 3´-oxindole] motifs that demonstrated exceptional inhibitory activity against

Nonhormonal selective estrogen receptor modulator 1-(2-[4-{(3R,4S)-7-Methoxy-2, 2-dimethyl-3-phenyl-chroman-4yl}phenoxy]ethyl)pyrrolidine hydrochloride (ormeloxifene hydrochloride) for the treatment of breast cancer.

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Breast cancer is the most common type of diagnosed cancers in women, difficult to treat, and has received international attention because of its aggressive nature and inherent drug resistance mechanisms. Development of a better selective estrogen receptor modulator with good therapeutic profile and

Using caffeoyl pyrrolidine derivative LY52, a potential inhibitor of matrix metalloproteinase-2, to suppress tumor invasion and metastasis.

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LY52 is a caffeoyl pyrrolidine derivative designed to fit the S'1 active pocket of gelatinases that act in tumor invasion and metastasis. Herein, we examined the effects of LY52 on expression of matrix metalloproteinase (MMP)-2 expression in human breast cancer MDA-MB-231 cells and on in vitro

CD44(+)/CD24(-) breast cancer cells exhibit phenotypic reversion in three-dimensional self-assembling peptide RADA16 nanofiber scaffold.

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BACKGROUND Self-assembling peptide nanofiber scaffolds have been shown to be a permissive biological material for tissue repair, cell proliferation, differentiation, etc. Recently, a subpopulation (CD44(+)/CD24(-)) of breast cancer cells has been reported to have stem/progenitor cell properties. The

Estrogen receptor synthesis and turnover in MCF-7 breast cancer cells measured by a density shift technique.

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The level of estrogen receptor (ER) is a major factor regulating cell sensitivity to estrogen. We have determined the rates of ER synthesis and turnover in MCF-7 breast cancer cells by incubating cells in medium supplemented with 13C15N2H-amino acids (dense amino acids) and monitoring the shift from

[Effect of combined use of PDTC and paclitaxel on proliferation and invasion of human breast cancer cell line MCF-7].

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This investigation was made with special reference to the effect of the combined use of nuclear factor-kappaB (NF-kappaB) inhibitor Pyrrolidine dithiocarbamate(PDTC) and Paclitaxel on the expression of Matrix metalloproteinases (MMP-9) and its inhibitor TIMP-1, and on the proliferation and invasion

1-pentyl-3-(4-aminophenyl)pyrrolidine-2,5-dione, a selective aromatase inhibitor: in vivo studies.

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1-Pentyl, 1-hexyl and 1-heptyl-3-(4-aminophenyl)pyrrolidine-2,5-dione, potent inhibitors of aromatase, lower oestrogen levels in PMSG-stimulated female rats in a comparable manner to the inhibitor aminoglutethimide (AG) used clinically for the treatment of breast cancer. Pharmacokinetic studies in

Synthesis of first ever 4-quinolone-3-carboxylic acid-appended spirooxindole-pyrrolidine derivatives and their biological applications.

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A series of 4-quinolone-3-carboxylic acid-containing spirooxindole-pyrrolidine derivatives was synthesized via multicomponent 1,3-dipolar cycloaddition reactions of azomethine ylides with new (E)-4-oxo-6-(3-phenyl-acryloyl)-1,4-dihydroquinoline-3-carboxylic acids in good yields with high

Simplification of antitumoral phenanthroindolizidine alkaloids: short synthesis of cytotoxic indolizidinone and pyrrolidine analogs.

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Hydroxylated seco-analogs of cytotoxic phenanthroindolizidine alkaloids were prepared in good yields from inexpensive 4-hydroxyproline derivatives, in just two steps. Thus, a sequential oxidative radical scission-oxidation was used for the direct conversion of the proline derivative into a

Cytotoxic and Antiproliferative Effects of Preussin, a Hydroxypyrrolidine Derivative from the Marine Sponge-Associated Fungus Aspergillus candidus KUFA 0062, in a Panel of Breast Cancer Cell Lines and Using 2D and 3D Cultures.

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Preussin, a hydroxyl pyrrolidine derivative isolated from the marine sponge-associated fungus Aspergillus candidus KUFA 0062, displayed anticancer effects in some cancer cell lines, including MCF7. Preussin was investigated for its cytotoxic and antiproliferative effects in breast cancer cell

Anticancer effect of tert-butyl-2(4,5-dihydrogen-4,4,5,5-tetramethyl-3-O-1H-imidazole-3-cationic-1-oxyl-2)-pyrrolidine-1-carboxylic ester on human hepatoma HepG2 cell line.

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Tert-butyl-2(4,5-dihydrogen-4,4,5,5-tetramethyl-3-O-1H-imidazole-3-cationic-1-oxyl-2)-pyrrolidine-1-carboxylic ester (L-NNP) is a stable nitroxyl nitroxide radical, which have displayed cytotoxicity on human breast cancer MCF-7 and MDA-MB-231 cell lines. In the present study, we investigated the

Characterization of MCF 7 breast cancer cell growth inhibition by the antiestrogen nitromifene (CI 628) and selected metabolites.

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Besides undergoing O-demethylation in vivo, the triarylethylene antiestrogen nitromifene [1-(4-(2-pyrrolidinylethoxy)phenyl)-1-(4-methoxy)-phenyl-2-phenyl- 2- nitroethene, 1] undergoes biotransformation via nitroreduction, ethene bond cleavage, and pyrrolidine ring oxidation affording ketone

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