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staurosporine/necrose
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Página 1 a partir de 455 resultados
Staurosporine induces the cell surface expression of both forms of human tumor necrosis factor receptors on myeloid and epithelial cells and modulates ligand-induced cellular response.
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Staurosporine, an inhibitor of protein kinase C, is commonly used to inhibit the growth factor-induced signal transduction pathway at the post-receptor level. In this report, we examined the effect of staurosporine on the constitutive expression of tumor necrosis factor (TNF) receptors in K562, a
Redox reagents and staurosporine inhibit stimulation of the transcription regulator NF-kappa B following tumour necrosis factor treatment of chronic B-leukaemia cells.
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B-chronic lymphocytic leukaemia (B-CLL) and hairy cell leukaemia cells (HCL) are refractory to stimulation by several cytokines which activate normal B-cells. However, tumour necrosis factor (TNF) promotes the proliferation of these cells. TNF regulates some of its cellular responses via the
Bcl2-low-expressing MCF7 cells undergo necrosis rather than apoptosis upon staurosporine treatment.
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We present a ribozyme-based strategy for studying the effects of Bcl2 down-regulation. The anti-bcl2 hammerhead ribozyme Rz-bcl2 was stably transfected into MCF7 cancer cells and the cleavage of Bcl2 mRNA was demonstrated using a new assay for cleavage product detection, while Western blot analysis
Regulation of intracellular pH mediates Bax activation in HeLa cells treated with staurosporine or tumor necrosis factor-alpha.
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Induction of apoptosis in HeLa cells with staurosporine produced a rise in the intracellular pH (pH(i)). Intracellular alkalinization was accompanied by translocation of Bax to the mitochondria, cytochrome c release, and cell death. The chloride channel inhibitor furosemide prevented intracellular
Contrasting effects of the protein kinase C inhibitor, staurosporine, on cytokine and phorbol ester stimulation of fructose 2,6-bisphosphate and prostaglandin E production by fibroblasts in vitro. Comparative studies using interleukin-1 alpha, tumour necrosis factor alpha, transforming growth factor beta, interferon-gamma and 12-O-tetradecanoylphorbol 13-acetate.
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It is known that both interleukin-1 alpha (IL-1 alpha) and 12-O-tetradecanoylphorbol 13-acetate (TPA) promote increases in intracellular levels of the glycolytic regulatory metabolite fructose 2,6-bisphosphate [Fru(2,6)P2] and in the production of prostaglandin E (PGE) by subcultured rheumatoid
Intracameral toxicity of bacterial components muramyl dipeptide and staurosporine: ciliary cyst formation, epithelial cell apoptosis and necrosis.
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The uveitogenic bacterial cell wall component muramyl dipeptide (MDP) is apoptogenic in rabbit kidney cells. The purpose of this investigation was to assess the cytotoxic activity of MDP and staurosporine (STSP; induces cultured corneal and lens cells apoptosis) in rabbit ciliary body tissue.
Augmentation of cytotoxic effect of tumor necrosis factor on human immunodeficiency virus-infected cells by staurosporine, a potent protein kinase C inhibitor.
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We have examined the effect of the protein kinase C (PKC) inhibitor, staurosporine, on tumor necrosis factor (TNF)-induced cytotoxic action and augmentation of human immunodeficiency virus (HIV) expression on the chronically HIV-infected T-cell line, MOLT-4/HIV (HTLV-IIIB strain). Staurosporine
Staurosporine-induced apoptosis and hydrogen peroxide-induced necrosis in two human breast cell lines.
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The use of apoptosis-inducing agents in the treatment of malignant cancer is increasingly being considered as a therapeutic approach. In this study, the induction of apoptosis and necrosis was examined in terms of temporal dose responses, comparing a malignant and nonmalignant breast cell line.
Sensitization of tumor cells to tumor necrosis factor action by the protein kinase inhibitor staurosporine.
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Tumor necrosis factor (TNF), first described as a cytokine with tumor-necrotizing activity, is now known to be a pleiotropic molecule. The molecular mechanisms responsible for the cytotoxic activity of TNF on malignant cells are still largely unknown. In this study, we report that the protein kinase
WOX1 is essential for tumor necrosis factor-, UV light-, staurosporine-, and p53-mediated cell death, and its tyrosine 33-phosphorylated form binds and stabilizes serine 46-phosphorylated p53.
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WW domain-containing oxidoreductase WOX1, also named WWOX or FOR, undergoes Tyr33 phosphorylation at its first N-terminal WW domain and subsequent nuclear translocation in response to sex steroid hormones and stress stimuli. The activated WOX1 binds tumor suppressor p53, and both proteins may induce
Aspergillus fumigatus conidia inhibit tumour necrosis factor- or staurosporine-induced apoptosis in epithelial cells.
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A major innate immune response to inhaled conidia of the opportunistic pathogen Aspergillus fumigatus (Af) is the synthesis of pro-inflammatory cytokines, which include tumour necrosis factor (TNF)-alpha, a known inducer of apoptosis. Modulation of host cell apoptosis has been reported to be one of
Tumor necrosis factor induction of endothelial cell surface antigens is independent of protein kinase C activation or inactivation. Studies with phorbol myristate acetate and staurosporine.
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We have investigated whether TNF-induced changes in human endothelial cell (EC) surface Ag expression are mediated by protein kinase C (PKC). This suggestion arose from the observations that PMA, a potent PKC activator, can mimic TNF by inducing expression of endothelial leukocyte adhesion molecule
Cyclic AMP differentiation of the oligodendroglial cell line N20.1 switches staurosporine-induced cell death from necrosis to apoptosis.
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Understanding the regulation of cell death pathways is critical for protecting myelin-producing cells and their associated axons during injury resulting from multiple sclerosis and other degenerative diseases. The immortalized N20.1 oligodendroglial cell line provides a useful model for identifying
Regulation of endothelin-1 in human non-pigmented ciliary epithelial cells by tumor necrosis factor-alpha.
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Endothelins (ET) are potent vasoactive peptides present in many ocular structures and are formed from precursor Big endothelins (Big ET-1) by the action of an endothelin-converting enzyme (ECE). ET-1 is thought to decrease intraocular pressure by contracting the ciliary muscle thus enhancing the
Apoptosis and necrosis: different execution of the same death.
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Regardless of whether apoptosis or necrosis are elicited by toxicants or by pathophysiological conditions, they are considered conceptually distinct forms of cell death. Nevertheless, there is increasing evidence that classical apoptosis and necrosis represent only the extreme ends of a wide range
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