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首页> 外文期刊>Cytokine >Regulation of soluble and surface-bound TRAIL in human T cells, B cells, and monocytes.
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Regulation of soluble and surface-bound TRAIL in human T cells, B cells, and monocytes.

机译:调节人T细胞,B细胞和单核细胞中可溶性和表面结合的TRAIL。

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摘要

Tumor necrosis factor (TNF)-related apoptosis-inducing ligand (TRAIL) is a member of the TNFerve growth factor superfamily that, apart from inducing cell death in susceptible cells, displays immunoregulatory functions influencing, for instance, T cell proliferation. It can be found in two forms: membrane-bound and soluble protein. The regulation of these is still not fully understood.In this study, we have analyzed the regulation of TRAIL surface expression and secretion in human T cells, B cells, and monocytes in response to specific stimuli. T cells, B cells, and monocytes were cultured in the presence of phytohemagglutinin (PHA)+interleukin (IL-2), anti-CD40+IL-4, and lipopolysaccharide (LPS), respectively. In particular, not only PHA+IL-2 but also LPS were able to induce secretion of soluble TRAIL, but did not enhance the expression of surface-bound TRAIL. Simultaneously, we investigated the effect of the pleiotropic stimulus interferon (IFN)-beta, known to target all leukocyte subsets, on TRAIL.Predominantly, monocytes were affected by IFN-beta, causing both release of soluble TRAIL and upregulation of the surface-bound form. IFN-beta, however, did not cause any upregulation of TRAIL in T cells.Our data serve as a basis to better understand the complex regulation of TRAIL in human peripheral immune cells and might help to clarify the role of the TRAIL system in immunopathology.
机译:肿瘤坏死因子(TNF)相关的凋亡诱导配体(TRAIL)是TNF /神经生长因子超家族的成员,除了诱导易感细胞死亡外,还表现出影响例如T细胞增殖的免疫调节功能。它有两种形式:膜结合蛋白和可溶性蛋白。这些的调节仍未完全了解。在这项研究中,我们分析了响应特定刺激的人类T细胞,B细胞和单核细胞中TRAIL表面表达和分泌的调节。 T细胞,B细胞和单核细胞分别在植物血凝素(PHA)+白介素(IL-2),抗CD40 + IL-4和脂多糖(LPS)的存在下培养。特别地,不仅PHA + IL-2而且LPS都能够诱导可溶性TRAIL的分泌,但是不增强表面结合TRAIL的表达。同时,我们研究了针对所有白细胞亚群的多效性干扰素(IFN)-β对TRAIL的影响。主要是单核细胞受到IFN-β的影响,导致可溶性TRAIL释放和表面结合的上调形成。然而,IFN-β并未引起T细胞中TRAIL的任何上调。我们的数据为更好地了解TRAIL在人外周免疫细胞中的复杂调控提供了基础,并可能有助于阐明TRAIL系统在免疫病理学中的作用。

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