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首页> 外文期刊>Cytokine >Regulation of beta2-adrenergic receptors on CD4 and CD8 positive lymphocytes by cytokines in vitro.
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Regulation of beta2-adrenergic receptors on CD4 and CD8 positive lymphocytes by cytokines in vitro.

机译:体外细胞因子对CD4和CD8阳性淋巴细胞上的β2肾上腺素受体的调节。

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摘要

Increasing evidence points to a close relationship between the autonomic nervous system and the immune system. To further investigate mechanisms regulating beta2-adrenergic receptor (beta2R) expression in lymphocytes, the influence of cytokines on the density of beta2R on purified CD4+ and CD8+ lymphocytes was determined in vitro. beta2R were determined by means of a radioligand binding assay with (125I)iodocyanopindolol. CD4+ and CD8+ lymphocytes were incubated with catecholamines, interleukin 1beta (IL-1beta) and interleukin 2 (IL-2) for 6-72 h. The results demonstrate declining beta2R numbers on CD4+ and CD8+ lymphocytes in vitro augmented by epinephrine. IL-1beta has no effect on beta2R expression compared to medium. However, incubation with IL-2 resulted in an up-regulation of beta2R on CD8+ lymphocytes. Thus, the study demonstrates a differential regulation of beta2R on T-lymphocyte subpopulations with CD8+ lymphocytes being more susceptible to mechanisms of beta2R modulation than CD4+ lymphocytes. The findings further strengthen the concept of a close interplay between the autonomic nervous system and the immune system.
机译:越来越多的证据表明,自主神经系统与免疫系统之间有着密切的关系。为了进一步研究调节淋巴细胞中β2-肾上腺素能受体(β2R)表达的机制,在体外确定了细胞因子对纯化的CD4 +和CD8 +淋巴细胞上β2R密度的影响。通过用(125I)碘氰基吲哚洛尔的放射性配体结合测定法确定β2R。将CD4 +和CD8 +淋巴细胞与儿茶酚胺,白介素1beta(IL-1beta)和白介素2(IL-2)孵育6-72小时。结果表明肾上腺素增强了体外CD4 +和CD8 +淋巴细胞的beta2R数量下降。与培养基相比,IL-1beta对beta2R表达没有影响。但是,与IL-2孵育会导致CD8 +淋巴细胞上的beta2R上调。因此,该研究表明,与CD4 +淋巴细胞相比,CD8 +淋巴细胞更容易受到β2R调节机制的影响,从而对T淋巴细胞亚群上的beta2R有不同的调节作用。这些发现进一步加强了自主神经系统和免疫系统之间紧密相互作用的概念。

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