首页> 外文期刊>Life sciences >RELATIONSHIP BETWEEN CAMP INDUCED INHIBITION OF HUMAN MENINGIOMA CELL PROLIFERATION AND AUTOCRINE SECRETION OF INTERLEUKIN-6
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RELATIONSHIP BETWEEN CAMP INDUCED INHIBITION OF HUMAN MENINGIOMA CELL PROLIFERATION AND AUTOCRINE SECRETION OF INTERLEUKIN-6

机译:CAMP诱导人黑素瘤细胞增殖的抑制与白细胞介素6自身分泌的关系

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摘要

Previous studies have suggested that activation of the adenylyl cyclase - cAMP system in meningiomas results in decreased mitosis. We have used meningioma cell culture to further investigate this phenomenon and to examine the potential role played by interleukin-6 (IL6). Incubation of cultured meningioma cells for 4-6 days with cholera toxin and theophylline, both of which increase intracellular cAMP levels, markedly stimulated IL6 secretion and inhibited cell growth rate. Similar effects were observed with 8-bromo-cAMP. In contrast, a neutralising polyclonal antibody against IL6 significantly stimulated meningioma proliferation and reduced the inhibitory effects of 8-bromo-cAMP. These results support the concept that IL6 acts as an autocrine / paracrine inhibitory factor for meningioma proliferation, and that the inhibition exerted by elevated intracellular cAMP levels may be at least partially mediated via increased secretion of the cytokine. [References: 24]
机译:先前的研究表明,脑膜瘤中腺苷酸环化酶-cAMP系统的激活导致有丝分裂减少。我们已经使用脑膜瘤细胞培养来进一步研究这种现象并检查白介素6(IL6)发挥的潜在作用。培养的脑膜瘤细胞与霍乱毒素和茶碱一起孵育4-6天,这两者均可增加细胞内cAMP水平,显着刺激IL6分泌并抑制细胞生长速率。用8-溴-cAMP观察到类似的效果。相反,针对IL6的中和性多克隆抗体可显着刺激脑膜瘤增殖并降低8-溴-cAMP的抑制作用。这些结果支持以下概念:IL6充当脑膜瘤增殖的自分泌/旁分泌抑制因子,而细胞内cAMP水平升高所产生的抑制作用可能至少部分地通过细胞因子分泌的增加而介导。 [参考:24]

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