Diacylglycerol generation and phosphoinositide turnover in human neutrophils: effects of particulate versus soluble stimuli.

Diacylglycerol generation and phosphoinositide turnover in human neutrophils: effects of particulate versus soluble stimuli.
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人中性粒细胞中二酰甘油的生成和磷酸肌醇周转:颗粒与可溶性刺激的影响。

DOI:
10.1016/0003-9861(89)90116-1
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发表时间:
1989
影响因子:
3.9
通讯作者:
Lambeth,JD
Lambeth,JD
中科院分区:
生物学3区
文献类型:
--
作者:
Burnham,DN;Tyagi,SR;Uhlinger,DJ;Lambeth,JD

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经血清处理或“调理”的酵母聚糖(OZ)是一种可被多形核白细胞吞噬的颗粒物质,可激活这些细胞中产生超氧化物的呼吸爆发。在本研究中使用的双波长光谱允许准确的连续监测超氧化物的产生(细胞色素还原)细胞激活后,这种混浊的材料;激活发生后,一个短暂的滞后期(约20秒),这是类似的滞后后看到的化学引诱剂甲酰-甲硫氨酰-亮氨酰-苯丙氨酸(fMLP)激活。不像fMLP响应,在约90秒后终止,超氧化物的产生响应OZ继续超过10分钟,并在这方面是类似的蛋白激酶C激活剂佛波醇肉豆蔻酸酯乙酸酯(PMA)看到的响应。OZ和fMLP,但不是PMA,也激活受体连接的磷脂酶C机制,如通过三磷酸肌醇(IP 3)(以及其他磷酸肌醇)和二酰基甘油(DAG)的出现来判断的,后者通过质量测定来测量。这些潜在介质的出现对应于磷酸肌醇的损失,特别是磷脂酰肌醇4,5-二磷酸(PIP 2)。DAG和肌醇糖产生的幅度以及PIP 2的分解使用OZ比使用fMLP大得多。此外,虽然fMLP导致IP 3和DAG的短暂增加,但OZ导致这些分子的持续升高。对于两种激动剂,推定介质产生的开始和持续时间对应于O2−产生的时间,与DAG和/或IP 3在呼吸爆发激活中的作用一致。
Serum-treated, or “opsonized” zymosan (OZ), a particulate material which can be phagocytized by polymorphonuclear leukocytes, activates the superoxide-generating respiratory burst in these cells. The use of dual wavelength spectroscopy in the present studies has allowed accurate continuous monitoring of superoxide generation (cytochromecreduction) upon cellular activation by this turbid material; activation occurs after a short lag period (about 20 s) which is similar to the lag seen after activation with the chemoattractant formyl-methionyl-leucyl-phenylalanine (fMLP). Unlike the fMLP response which terminates after about 90 s, superoxide generation in response to OZ continues beyond 10 min, and is similar in this regard to the response seen with the protein kinase C activator phorbol myristate acetate (PMA). OZ and fMLP, but not PMA, also activate receptor-linked phospholipase C mechanisms as judged by the appearance of inositol trisphosphate (IP3) (as well as other inositol phosphates) and diacylglycerol (DAG), with the latter measured by a mass assay. The appearance of these potential mediators corresponded to the loss of phosphoinositides, in particular phosphatidylinositol 4,5-bisphosphate (PIP2). The magnitude of DAG and inositol sugar generation as well as the breakdown of PIP2was considerably greater using OZ than with fMLP. In addition, while fMLP resulted in a transient increase in IP3and DAG, OZ resulted in a sustained elevation of these molecules. With both agonists, the onset and duration of generation of putative mediators corresponded to the period of generation of O2−, consistent with a role for DAG and/or IP3in the activation of the respiratory burst.
佛波醇二酯和二辛酰甘油刺激人中性粒细胞中二酰基甘油和烷酰基甘油的积累。
DOI: --
发表时间: 1988
期刊: Journal of immunology (Baltimore, Md. : 1950)
影响因子: --
作者:
Rider,LG;Dougherty,RW;Niedel,JE
通讯作者: Niedel,JE
DOI: 10.1016/0006-291x(88)90528-1
发表时间: 1988
影响因子: 3.1
作者:
J. Pai;M. Siegel;R. Egan;M. Billah
通讯作者: M. Billah
花生四烯酸对 NADPH 氧化酶的激活涉及完整人中性粒细胞中的磷脂酶 A2,但在无细胞系统中则不然。
DOI: 10.1016/s0006-291x(86)80395-3
发表时间: 1986
影响因子: 3.1
作者:
Maridonneau-Parini,I;Tauber,AI
通讯作者: Tauber,AI
DOI: --
发表时间: 1986
期刊: Blood
影响因子: 20.3
作者:
Pike,MC;Jakoi,L;McPhail,LC;Snyderman,R
通讯作者: Snyderman,R
DOI: --
发表时间: 1986
期刊: Journal of immunology (Baltimore, Md. : 1950)
影响因子: --
作者:
Cox,CC;Dougherty,RW;Ganong,BR;Bell,RM;Niedel,JE;Snyderman,R
通讯作者: Snyderman,R