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digitonin/tumore della mammella
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Unraveling the mechanisms behind the enhanced MTT conversion by irradiated breast cancer cells.
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Previously, we described the radiation-induced (RI) 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) effect as the increased MTT metabolization at the intermediate dose region after the irradiation of an MCF-7/6 cell monolayer with an X-ray dose gradient. We wondered if the cell
Evidence that the antiestrogen binding site is a histamine or histamine-like receptor.
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N,N-diethyl-2-[(4 phenylmethyl)-phenoxy]-ethanamine X HCl (DPPE), a compound selective for the antiestrogen binding site, is structurally similar to the aminoethyl ether group of antihistamines. Our studies now reveal that H1-, but not H2-antagonists, also compete for this site in the order: DPPE =
The mitogen-activated protein kinase pathway can inhibit TRAIL-induced apoptosis by prohibiting association of truncated Bid with mitochondria.
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Breast cancer cells often show increased activity of the mitogen-activated protein kinase (MAPK) pathway. We report here that this pathway reduces their sensitivity to death ligand tumor necrosis factor-related apoptosis-inducing ligand (TRAIL) and present the underlying mechanism. Activation of
P-glycoprotein, multidrug resistance-associated proteins and human organic anion transporting polypeptide influence the intracellular accumulation of atazanavir.
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BACKGROUND
Drug efflux (for example, P-glycoprotein [P-gp], multidrug resistance-associated proteins [MRPs] and breast cancer resistance protein [BCRP]) and influx (for example, human organic anion transporting polypeptide [hOCTP] or human organic anion transporting polypeptide [hOATP]) transporters
Parallel single-cell analysis microfluidic platform.
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We report a PDMS microfluidic platform for parallel single-cell analysis (PaSCAl) as a powerful tool to decipher the heterogeneity found in cell populations. Cells are trapped individually in dedicated pockets, and thereafter, a number of invasive or non-invasive analysis schemes are performed.
A mechanism of nucleocytoplasmic trafficking for the homeodomain protein PRH.
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Proline-rich homeodomain (PRH)/hematopoietically expressed homeodomain (Hex) is a homeodomain protein that plays an important role in early embryonic patterning and hematopoiesis. PRH can act as either a tumor suppressor or an oncogene and its expression is dysregulated in certain types of lymphoid
Ligands specify estrogen receptor alpha nuclear localization and degradation.
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BACKGROUND
The estrogen receptor alpha (ERα) is found predominately in the nucleus, both in hormone stimulated and untreated cells. Intracellular distribution of the ERα changes in the presence of agonists but the impact of different antiestrogens on the fate of ERα is a matter of debate.
RESULTS
A
The proteomic analysis of breast cell line exosomes reveals disease patterns and potential biomarkers
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Cancer cells release small extracellular vesicles, exosomes, that have been shown to contribute to various aspects of cancer development and progression. Differential analysis of exosomal proteomes from cancerous and non-tumorigenic breast cell lines can provide valuable information related to
Nuclear import of insulin-like growth factor-binding protein-3 and -5 is mediated by the importin beta subunit.
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Although insulin-like growth factor-binding protein (IGFBP)-3 and IGFBP-5 are known to modulate cell growth by reversibly sequestering extracellular insulin-like growth factors, several reports have suggested that IGFBP-3, and possibly also IGFBP-5, have important insulin-like growth
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