Granulocyte-macrophage colony-stimulating factor enhances 5-lipoxygenase levels in human polymorphonuclear leukocytes.

Granulocyte-macrophage colony-stimulating factor enhances 5-lipoxygenase levels in human polymorphonuclear leukocytes.
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粒细胞巨噬细胞集落刺激因子可增强人多形核白细胞中 5-脂氧合酶的水平。

DOI:
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发表时间:
1994
影响因子:
4.4
通讯作者:
Shaun R. Mccoll
Shaun R. Mccoll
中科院分区:
医学2区
文献类型:
--
作者:
Marc Pouliot;P. McDonald;L. Khamzina;Pierre Borgeat;Shaun R. Mccoll

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用粒细胞-巨噬细胞CSF(GM-CSF)刺激人多形核白细胞(PMNL)导致若干基因的表达增强,包括一些编码细胞因子和酶的基因。在这项研究中,我们研究了GM-CSF的能力,以上调人类中性粒细胞5-脂氧合酶(5-LO),在白三烯合成途径的关键酶。GM-CSF诱导PMNL中5-LO的剂量和时间依赖性从头合成,通过35 S-甲硫氨酸标记的5-LO的免疫沉淀测定。这种上调发生在用GM-CSF处理的30分钟内,并且使用低至30 pM的GM-CSF浓度观察到。用蛋白质合成抑制剂放线菌酮预先处理细胞可消除GM-CSF的这种作用。Western印迹分析表明,5-LO的水平没有变化超过6小时的时间内在未受刺激的PMNL与CX治疗,和GM-CSF诱导的5-LO蛋白的总细胞水平的快速增加,综合这些结果表明,GM-CSF的5-LO的表达的翻译效果。然而,GM-CSF并没有显着影响5-LO mRNA在中性粒细胞中的水平,通过北方印迹分析确定。此外,GM-CSF没有改变5-LO mRNA的稳定性,与GM-CSF对PMNL中5-LO表达的转录后效应一致。这些结果表明,人PMNL能够响应生理激活而上调5-LO的表达。
Stimulation of human polymorphonuclear leukocytes (PMNL) with granulocyte-macrophage CSF (GM-CSF) results in the enhanced expression of several genes, including some coding for cytokines and enzymes. In this study, we investigated the ability of GM-CSF to up-regulate the human neutrophil 5-lipoxygenase (5-LO), a key enzyme in the leukotriene synthetic pathway. GM-CSF induced a dose- and time-dependent de novo synthesis of the 5-LO in PMNL, as determined by immunoprecipitation of 35S-methionine-labeled 5-LO. This up-regulation occurred within 30 min of treatment with GM-CSF and was observed using concentrations of GM-CSF as low as 30 pM. Prior treatment of the cells with the protein synthesis inhibitor cycloheximide abolished this effect of GM-CSF. Western blot analyses demonstrated that levels of 5-LO did not vary over a 6-h period in unstimulated PMNL treated with CX, and that GM-CSF induced a rapid increase in the total cellular level of 5-LO protein; taken together these results indicated a translational effect of GM-CSF on the expression of the 5-LO. However, GM-CSF did not significantly affect the level of 5-LO mRNA in neutrophils, as determined by Northern blot analysis. Furthermore GM-CSF did not alter the stability of 5-LO mRNA, in agreement with a posttranscriptional effect of GM-CSF on 5-LO expression in PMNL. These results show that human PMNL are capable of up-regulating the expression of the 5-LO in response to physiologic activation.
人粒细胞-巨噬细胞集落刺激因子和其他细胞因子促使人中性粒细胞增强花生四烯酸释放和白三烯 B4 合成。
DOI: --
发表时间: 1988
期刊: Journal of immunology (Baltimore, Md. : 1950)
影响因子: --
作者:
DiPersio,JF;Billing,P;Williams,R;Gasson,JC
通讯作者: Gasson,JC
粒细胞-巨噬细胞集落刺激因子调节人中性粒细胞的兴奋-反应耦合序列。
DOI: --
发表时间: 1988
期刊: Journal of immunology (Baltimore, Md. : 1950)
影响因子: --
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通讯作者: DiPersio,JF
DOI: 10.1172/jci112705
发表时间: 1986-11-01
影响因子: 15.9
作者:
LOPEZ, AF;WILLIAMSON, DJ;VADAS, MA
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人粒细胞-巨噬细胞集落刺激因子对人中性粒细胞白三烯合成的启动作用的表征。
DOI: 10.1016/0090-6980(88)90013-5
发表时间: 1988
期刊: Prostaglandins
影响因子: --
作者:
DiPersio,JF;Naccache,PH;Borgeat,P;Gasson,JC;Nguyen,MH;McColl,SR
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通过生物合成(重组)粒细胞-巨噬细胞集落刺激因子增强人嗜酸性粒细胞细胞毒性和白三烯合成。
DOI: --
发表时间: 1986
期刊: Journal of immunology (Baltimore, Md. : 1950)
影响因子: --
作者:
Silberstein,DS;Owen,WF;Gasson,JC;DiPersio,JF;Golde,DW;Bina,JC;Soberman,R;Austen,KF;David,JR
通讯作者: David,JR