Revising the structure of a new eicosanoid from human platelets to 8,9–11,12-diepoxy-13-hydroxyeicosadienoic acid
作者:Andrei Kornilov、Paul D. Kennedy、Maceler Aldrovandi、Andrew J.A. Watson、Christine Hinz、Bryan Harless、Joseph Colombo、Kirk M. Maxey、Victoria J. Tyrrell、Matthew Simon、Varinder K. Aggarwal、William E. Boeglin、Alan R. Brash、Robert C. Murphy、Valerie B. O'Donnell
DOI:10.1074/jbc.ra119.008915
日期:2019.6
platelet activation that can stimulate human neutrophil integrin expression. On the basis of mass spectrometry (MS/MS and MS3), stable isotope labeling, and GC-MS analysis, we previously proposed a structure of 8-hydroxy-9,11-dioxolane eicosatetraenoic acid (DXA3). Here, we achieved enzymatic synthesis and 1H NMR characterization of this compound with results in conflict with the previously proposed structural
类花生酸是由免疫细胞和组织细胞产生的发热,疼痛和炎症的重要介体。我们最近描述了在血小板活化过程中由环氧合酶-1(COX-1)周转产生的一种新的生物活性类花生酸,它可以刺激人类嗜中性粒细胞整合素的表达。在质谱(MS / MS和MS3),稳定同位素标记和GC-MS分析的基础上,我们先前提出了8-羟基-9,11-二氧戊环二十碳四烯酸(DXA3)的结构。在这里,我们实现了该化合物的酶促合成和1 H NMR表征,结果与先前提出的结构分配相冲突。因此,通过使用LC-MS,我们筛选了11-氢过氧-二十碳四烯酸(11-HpETE)的自氧化反应,从而确定了具有血小板产物精确的反相色谱和MS特征的候选物。我们优化了这些方法以提高收率,从而可以通过1H NMR进行完整的结构分析。修改后的分配在此处显示为8,9-11,12-dipoxy-13-hydroxyeicosadienoic acid,缩写为8,9-11