brefeldin a/necrosis

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Brefeldin A-Inhibited Guanine Nucleotide-Exchange Factor 1 (BIG1) Governs the Recruitment of Tumor Necrosis Factor Receptor-Associated Factor 2 (TRAF2) to Tumor Necrosis Factor Receptor 1 (TNFR1) Signaling Complexes.

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Tumor necrosis factor receptor-associated factor 2 (TRAF2) is a critical mediator of tumor necrosis factor-α (TNF-α) signaling. However, the regulatory mechanisms of TRAF2 are not fully understood. Here we show evidence that TRAF2 requires brefeldin A-inhibited guanine nucleotide-exchange factor 1

Evaluation of monensin and brefeldin A for flow cytometric determination of interleukin-1 beta, interleukin-6, and tumor necrosis factor-alpha in monocytes.

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Flow cytometry has become a powerful technique to measure intracellular cytokine production in lymphocytes and monocytes. Appropriate inhibition of the secretion of the produced cytokines is required for studying intracellular cytokine expression. The aim of this study was to compare the capacity of

Brefeldin A reduces tumor necrosis factor-α-stimulated production of inflammatory mediators by suppressing the Akt, mTOR, and NF-κB pathways in human keratinocytes.

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Keratinocytes may play an important role in the pathogenesis of inflammatory skin diseases. Brefeldin A has been shown to attenuate the production and secretion of chemical mediators involved in inflammation and immune responses. However, the effect of brefeldin A on the TNF-α-stimulated production

Comparative study of the metabolic pools of sphingomyelin and phosphatidylcholine sensitive to tumor necrosis factor.

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The metabolism and localization of the pools of sphingomyelin and phosphatidylcholine (PtdCho) which are hydrolyzed upon activation of the sphingomyelin signal transduction pathway were studied in human skin fibroblasts treated with tumor necrosis factor alpha (TNF-alpha). In a first series of

7-Ketocholesterol upregulates interleukin-6 via mechanisms that are distinct from those of tumor necrosis factor-alpha, in vascular smooth muscle cells.

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This study investigated the effects of 7-ketocholesterol on interleukin (IL)-6 expression in vascular smooth muscle cells (VSMC). Among the 7 IL examined, only IL-6 transcript was increased by 7-ketocholesterol treatment in human aorta smooth muscle cells. IL-6 transcripts increased up to 24 h after

Detection of intracellular tumor necrosis factor alpha in stimulated fetal cells.

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BACKGROUND It is unknown if immature fetal cells produce tumor necrosis factor (TNF) alpha in the same manner that adult cells do. The aim of this study was to determine the feasibility of early detection of intracellular TNF produced by circulating human monocytes (Mo) and lymphocytes (Ly) using

Cardiotrophin-1 induces tumor necrosis factor alpha synthesis in human peripheral blood mononuclear cells.

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Chronic heart failure (CHF) is associated with elevated concentrations of tumor necrosis factor (TNF) alpha and cardiotrophin-1 (CT-1) and altered peripheral blood mononuclear cell (PBMC) function. Therefore, we tested whether CT-1 induces TNFalpha in PBMC of healthy volunteers. CT-1 induced in PBMC

Lipopolysaccharide prevents apoptosis induced by brefeldin A, an endoplasmic reticulum stress agent, in RAW 264.7 cells.

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The effect of lipopolysaccharide (LPS) on the cell death induced by endoplasmic reticulum (ER) stress agents in RAW 264.7 cells was studied. LPS prevented the cell death by brefeldin A, but not thapsigargin and tunicamycin. CpG DNA as well as LPS prevented brefeldin A-induced cell death whereas

Differential modulation of surface and intracellular protein expression by T cells after stimulation in the presence of monensin or brefeldin A.

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Intracellular cytokine staining is an increasingly popular analytical tool that can be used to define the profile of cytokines in various disease states. One important requirement for this assay is the inclusion of a protein transport inhibitor in stimulated cell cultures to trap the cytokine, thus

Brefeldin A, but not monensin, enables flow cytometric detection of interleukin-4 within peripheral T cells responding to ex vivo stimulation with Chlamydia trachomatis.

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Intracellular cytokine staining (ICS) assay optimization should include selection of suitable cytokine secretion inhibitors. Here, peripheral blood mononuclear cells (PBMC) from women with proven history of C. trachomatis genital tract infection were used to compare the ability of brefeldin A (BFA)

The brefeldin A-inhibited guanine nucleotide-exchange protein, BIG2, regulates the constitutive release of TNFR1 exosome-like vesicles.

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The type I, 55-kDa tumor necrosis factor receptor (TNFR1) is released from cells to the extracellular space where it can bind and modulate TNF bioactivity. Extracellular TNFR1 release occurs by two distinct pathways: the inducible proteolytic cleavage of TNFR1 ectodomains and the constitutive

Role of an acidic compartment in tumor-necrosis-factor-alpha-induced production of ceramide, activation of caspase-3 and apoptosis.

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Tumor necrosis factor-alpha (TNF-alpha) apoptosis by recruiting a complex of cytosolic proteins at its plasma membrane receptor. Among them is caspase-8, an interleukin-1beta-converting enzyme (ICE)-like protease that initiates an amplified protease cascade to activate the cell-death machinery. The

Poliovirus protein 3A inhibits tumor necrosis factor (TNF)-induced apoptosis by eliminating the TNF receptor from the cell surface.

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Viral infections often trigger host defensive reactions by activating intrinsic (intracellular) and extrinsic (receptor-mediated) apoptotic pathways. Poliovirus is known to encode an antiapoptotic function(s) suppressing the intrinsic pathway. Here, the effect of poliovirus nonstructural proteins on

The majority of epidermal T cells in Psoriasis vulgaris lesions can produce type 1 cytokines, interferon-gamma, interleukin-2, and tumor necrosis factor-alpha, defining TC1 (cytotoxic T lymphocyte) and TH1 effector populations: a type 1 differentiation bias is also measured in circulating blood T cells in psoriatic patients.

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Psoriasis vulgaris is a skin disease potentially mediated by pro-inflammatory cytokines produced by type 1 lesional T cells. The capability of individual T cells to produce these cytokines in lesional skin is not known. In this study we measured the ability of lesional and peripheral blood T cells

Inactivation of NUPR1 promotes cell death by coupling ER-stress responses with necrosis.

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It was already described that genetic inhibition of NUPR1 induces tumor growth arrest. In this paper we studied the metabolism changes after NUPR1 downregulation in pancreatic cancer cells, which results in a significant decrease of OXPHOS activity with a concomitant lower ATP production which

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