首页> 外文期刊>Journal of Neuroimmunology: Official Bulletin of the Research Committee on Neuroimmunology of the World Federation of Neurology >Role of endogenous pro-enkephalin A-derived peptides in human T cell proliferation and monocyte IL-6 production.
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Role of endogenous pro-enkephalin A-derived peptides in human T cell proliferation and monocyte IL-6 production.

机译:内源性脑啡肽原前体在人T细胞增殖和单核细胞IL-6产生中的作用。

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In this paper, we describe that met-enkephalin and/or enkephalin-containing intermediary peptides of the prohormone pro-enkephalin A are produced and secreted by human peripheral blood T cells and monocytes. The peptides are produced after stimulation with the mitogenic monoclonal antibodies anti-CD2.1/2.2 and anti-CD28. In monocytes, enkephalin synthesis was induced by stimulation with lipopolysaccharide. We demonstrate here that these immune cell-derived enkephalins play an important regulatory role in the immune response. By using an anti-sense oligonucleotide strategy we could block the production of enkephalins. Blockade of the production of met-enkephalin and enkephalin-containing intermediary peptides resulted in enhancement of the proliferative T cell response and inhibition of monocyte IL-6 secretion. In vitro reconstitution of the anti-sense treated cultures with synthetic met-enkephalin or the delta-type specific opioid receptor agonist deltorphin could reverse inhibition of monocyte IL-6 production, suggesting that endogenous enkephalins act via membrane opioid receptors. In contrast, addition of met-enkephalin or deltorphin to the anti-sense treated T cell cultures did not have any effect on T cell proliferation.
机译:在本文中,我们描述了人外周血T细胞和单核细胞产生和分泌原激素原脑啡肽A的甲脑啡肽和/或含脑啡肽的中间肽。在用促有丝分裂的单克隆抗体抗CD2.1 / 2.2和抗CD28刺激后产生肽。在单核细胞中,通过脂多糖刺激诱导脑啡肽合成。我们在这里证明这些免疫细胞衍生的脑啡肽在免疫反应中起重要的调节作用。通过使用反义寡核苷酸策略,我们可以阻止脑啡肽的产生。阻断对脑啡肽和含脑啡肽的中间肽的产生导致增殖性T细胞应答的增强和单核细胞IL-6分泌的抑制。用合成的甲基脑啡肽或δ型特异性阿片受体激动剂deltorphin对反义处理的培养物进行体外重建可逆转对单核细胞IL-6产生的抑制作用,表明内源性脑啡肽通过膜阿片受体起作用。相反,向反义处理的T细胞培养物中加入甲脑啡肽或地啡肽对T细胞增殖没有任何影响。

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