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Enzymes that hydrolyze adenine nucleotides in platelets from breast cancer patients.

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The activities of NTPDase (EC 3.6.1.5, apyrase, CD39) and 5'-nucleotidase (EC 3.1.3.5, CD73) enzymes were analyzed in platelets from breast cancer patients. Initially, patients were compared in terms of length (years) of tamoxifen use. The following groups were studied: breast cancer patients who

Deletion of one adenine base within the polyadenine tract of transforming growth factor-beta receptor type II in human MDA-MB-231 breast cancer cell line.

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Microsatellite mutation of the polyadenine tract (10 adenine repeat) within the TbetaR-II [transforming growth factor-beta (TGF-beta) receptor type II] coding region have been found in a variety of human cancers, particularly in association with microsatellite instability (MSI). Since breast cancers

The c-Yes 3'-UTR contains adenine/uridine-rich elements that bind AUF1 and HuR involved in mRNA decay in breast cancer cells.

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c-Yes is a member of the c-Src family of tyrosine kinases and has been implicated in intracellular signaling, cell morphology, and adhesion. Changes in its expression have also been associated with the aggressiveness of human breast and colon cancer cells. In MDA-MB-231 human breast cancer cells,

Adenovirus adenine nucleotide translocator-2 shRNA effectively induces apoptosis and enhances chemosensitivity by the down-regulation of ABCG2 in breast cancer stem-like cells.

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Cancer stem cells (CSCs) are resistant to chemo- and radio-therapy, and can survive to regenerate new tumors. This is an important reason why various anti- cancer therapies often fail to completely control tumors, although they kill and eliminate the bulk of cancer cells. In this study, we

Suppression of adenine nucleotide translocase-2 by vector-based siRNA in human breast cancer cells induces apoptosis and inhibits tumor growth in vitro and in vivo.

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BACKGROUND Adenine nucleotide translocator (ANT) 2 is highly expressed in proliferative cells, and ANT2 induction in cancer cells is known to be directly associated with glycolytic metabolisms and carcinogenesis. In addition, ANT2 repression results in the growth arrest of human cells, implying that

Short-hairpin RNA-induced suppression of adenine nucleotide translocase-2 in breast cancer cells restores their susceptibility to TRAIL-induced apoptosis by activating JNK and modulating TRAIL receptor expression.

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BACKGROUND Tumor necrosis factor (TNF)-related apoptosis-inducing ligand (TRAIL; apo2 ligand) induces apoptosis in cancer cells but has little effect on normal cells. However, many cancer cell types are resistant to TRAIL-induced apoptosis, limiting the clinical utility of TRAIL as an anti-cancer

A small molecule designed to bind to the adenine nucleotide pocket of Hsp90 causes Her2 degradation and the growth arrest and differentiation of breast cancer cells.

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BACKGROUND The Hsp90s contain a conserved pocket that binds ATP/ADP and plays an important role in the regulation of chaperone function. Occupancy of this pocket by several natural products (geldanamycin (GM) and radicicol) alters Hsp90 function and results in the degradation of a subset of proteins

Nicotinamide adenine dinucleotide (phosphate): quinone oxidoreductase (DT-diaphorase) as a target for bioreductive antitumor quinones: quinone cytotoxicity and selectivity in human lung and breast cancer cell lines.

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Bioreductive antitumor quinones require reductive metabolism to produce their cytotoxic effects. A series of these compounds was screened for relative rates of reduction by the two-electron reductase, NAD(P)H:quinone oxidoreductase (DTD). The antitumor quinones streptonigrin (SN),

Characterizing the metabolic heterogeneity in human breast cancer xenografts by 3D high resolution fluorescence imaging.

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We previously reported that tumor mitochondrial redox state and its heterogeneity distinguished between the aggressive and the indolent breast cancer xenografts, suggesting novel metabolic indices as biomarkers for predicting tumor metastatic potential. Additionally, we reported that the identified

Regulation of hypoxia responses by flavin adenine dinucleotide-dependent modulation of HIF-1α protein stability.

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Oxygen deprivation induces a range of cellular adaptive responses that enable to drive cancer progression. Here, we report that lysine-specific demethylase 1 (LSD1) upregulates hypoxia responses by demethylating RACK1 protein, a component of hypoxia-inducible factor (HIF) ubiquitination machinery,

Translocator protein (TSPO) in breast cancer.

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Several molecular and cellular markers are currently used as prognostic indicators for diagnosis and therapeutic intervention of breast cancer. Although some of these markers have helped clinicians provide an earlier diagnosis (or prognosis), they have failed to provide adequate information about

Estrogen mediation of breast tumor formation involves estrogen receptor-dependent, as well as independent, genotoxic effects.

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Long-term exposure to estrogens influences the development of breast cancer in women, but the precise mechanisms involved are not clearly defined. Our working hypothesis is that estrogen modulates this process by two separate processes. One involves the binding of estradiol to estrogen receptor (ER)

Heat fixation of cancer cells ablated with high-intensity-focused ultrasound in patients with breast cancer.

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BACKGROUND High-intensity-focused ultrasound (HIFU) is a noninvasive thermal ablation technique. This study reports the use of histological techniques for the pathological assessment of HIFU effects in patients with breast cancer. METHODS Twenty-three patients with biopsy-proven breast cancer

Differences in fluorescence profiles from breast cancer tissues due to changes in relative tryptophan content via energy transfer: tryptophan content correlates with histologic grade and tumor size but not with lymph node metastases.

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The correlation between histologic grade, an increasingly important measure of prognosis for patients with breast cancer, and tryptophan levels from tissues of 15 breast carcinoma patients was investigated. Changes in the relative content of key native organic biomolecule tryptophan were seen from

A cis and trans adenine-dependent hairpin ribozyme against Tpl-2 target.

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Ribozymes are catalytic RNAs that possess the property of cutting an RNA target via site-specific cleavage after sequence-specific recognition. Ribozymes can moreover cleave multiple substrate molecules. An increasing number of studies show that ribozymes are particularly well adapted tools against

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