首页> 外文期刊>Cellular immunology >Neutralization of interleukin (IL)-10 released by monocytes/macrophages enhances the up-regulatory effect of monocyte/macrophage-derived IL-6 on expressions of IL-6 and MUC1, and migration in HT-29 colon cancer cells.
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Neutralization of interleukin (IL)-10 released by monocytes/macrophages enhances the up-regulatory effect of monocyte/macrophage-derived IL-6 on expressions of IL-6 and MUC1, and migration in HT-29 colon cancer cells.

机译:单核细胞/巨噬细胞释放的白介素(IL)-10的中和增强了单核细胞/巨噬细胞衍生的IL-6对IL-6和MUC1表达以及在HT-29结肠癌细胞中迁移的上调作用。

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摘要

The interactions between monocyte-derived IL-6 and IL-10 in colon cancer are unknown. We continued previous work that showed monocyte/macrophage-derived IL-6 induces IL-6 and MUC1 expression in HT-29 cancer cells, and evaluated if IL-10 present in monocyte/macrophage is involved in this IL-6-mediated effect. We treated HT-29 cells with monocyte/macrophage supernatant following neutralization of monocyte/macrophage-released IL-10. Neutralization markedly enhanced monocyte/macrophage-derived IL-6 effects on HT-29 cells including IL-6 and MUC1 production and cell migration. Double blocking of IL-6 and IL-10 in monocyte/macrophage supernatants abolished this enhancement. Western blot analysis of STAT3 phosphorylation showed that this augmented response in HT-29 cells following IL-10 neutralization is probably mediated through enhanced IL-6-induced phosphorylation (Tyr(705)) of STAT3 proteins. Therefore, monocytes/macrophages have the capacity to release the functionally associated cytokines IL-6 and IL-10 whose interactions can account for the pathogenesis and progression of colon cancer.
机译:单核细胞来源的IL-6和IL-10在结肠癌中的相互作用尚不清楚。我们继续进行先前的研究,该研究表明单核细胞/巨噬细胞衍生的IL-6诱导HT-29癌细胞中IL-6和MUC1表达,并评估了单核细胞/巨噬细胞中存在的IL-10是否参与这种IL-6介导的作用。中和单核细胞/巨噬细胞释放的IL-10后,我们用单核细胞/巨噬细胞上清液处理HT-29细胞。中和作用显着增强了单核细胞/巨噬细胞来源的IL-6对HT-29细胞的作用,包括IL-6和MUC1的产生以及细胞迁移。单核细胞/巨噬细胞上清液中IL-6和IL-10的双重阻断消除了这种增强。 STAT3磷酸化的蛋白质印迹分析表明,IL-10中和后HT-29细胞中这种增强的应答可能是由IL-6诱导的STAT3蛋白的磷酸化(Tyr(705))介导的。因此,单核细胞/巨噬细胞具有释放功能相关的细胞因子IL-6和IL-10的能力,它们的相互作用可以解释结肠癌的发病机理和进展。

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