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Modulation of cytokine release from mononuclear cells by prostacyclin, IL-4 and IL-13.

机译:前列环素,IL-4和IL-13调节单核细胞释放的细胞因子。

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In a previous study, we reported that cicaprost, a stable prostacyclin analogue can inhibit the release of granulocyte-macrophage colony-stimulating factor (GM-CSF) from activated human peripheral mononuclear blood cells (PBMCs). Since interleukin (IL-4) and IL-13 have been shown to inhibit the release of cytokines from PBMCs we tested the hypothesis that prostacyclin in combination with IL-4 or IL-13 can act synergistically to modulate the release of IL-10, generally associated with anti-inflammatory properties, and the pro-inflammatory cytokine tumour necrosis factor alpha (TNF-alpha). For this purpose, PBMCs were isolated over Ficoll, stimulated with lipopolysaccharide (LPS) and incubated in the presence of cicaprost, IL-4 or IL-13. There was a significant reduction in TNF-alpha as well as IL-10 secretion from LPS-stimulated PBMCs following incubation with IL-4 or IL-13. In contrast, cicaprost reduced the secretion of TNF-alpha but led to a slight enhancement of IL-10 release from PBMCs. When LPS-activated PBMCs were incubated in the presence of cicaprost and IL-4 or IL-13 there was a selective, synergistic inhibition of the TNF-alpha release which was not observed for IL-10. Thus, our data suggest that prostacyclin can synergize with cytokines to selectively inhibit the release of pro-inflammatory cytokines from PBMCs. Copyright 1999 Academic Press.
机译:在以前的研究中,我们报道了稳定的前列环素类似物西卡前列素可以抑制粒化巨噬细胞集落刺激因子(GM-CSF)从活化的人外周血单个核细胞(PBMC)释放。由于已显示白介素(IL-4)和IL-13抑制PBMC中细胞因子的释放,因此我们测试了前列环素与IL-4或IL-13结合可协同调节IL-10释放的假说,通常与抗炎特性和促炎性细胞因子肿瘤坏死因子α(TNF-alpha)有关。为此,将PBMC通过Ficoll分离,用脂多糖(LPS)刺激,并在cicaprost,IL-4或IL-13存在下孵育。与IL-4或IL-13孵育后,LPS刺激的PBMC的TNF-α以及IL-10分泌显着减少。相反,西卡前列素减少了TNF-α的分泌,但导致PBMC中IL-10的释放略有增加。当LPS激活的PBMC在cicaprost和IL-4或IL-13的存在下孵育时,对TNF-α的释放具有选择性的协同抑制作用,而对IL-10则没有观察到。因此,我们的数据表明前列环素可以与细胞因子协同作用,以选择性抑制PBMCs中促炎性细胞因子的释放。版权所有1999,学术出版社。

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