Novel Highly Potent and Metabolically Resistant Oxoeicosanoid (OXE) Receptor Antagonists That Block the Actions of the Granulocyte Chemoattractant 5-Oxo-6,8,11,14-Eicosatetraenoic Acid (5-oxo-ETE)
作者:Shishir Chourey、Qiuji Ye、Chintam Nagendra Reddy、Rui Wang、Chantal Cossette、Sylvie Gravel、Irina Slobodchikova、Dajana Vuckovic、Joshua Rokach、William S. Powell
DOI:10.1021/acs.jmedchem.8b00154
日期:2018.7.26
succeeded in dramatically increasing antagonist potency and resistance to metabolism by replacing the hexyl group with phenylpentyl or phenylhexyl side chains. Compared with our previous lead compound S-230, our most potent antagonist, S-C025, has an IC50 (120 pM) over 80 times lower and a substantially longer plasma half-life. A single major metabolite, which retains antagonist activity (IC50, 690 pM) and
5-Oxo-6,8,11,14-二十碳四烯酸(5-oxo-ETE)是一种有效的脂质介体,可通过选择性OXE受体(OXE-R)诱导组织嗜酸性粒细胞增多,这是嗜酸性粒细胞疾病的诱人治疗靶标。我们先前发现吲哚OXE-R拮抗剂可阻断5-oxo-ETE诱导的灵长类嗜酸性粒细胞活化。尽管这些化合物具有良好的口服吸收能力,但由于其己基侧链的广泛氧化,血浆水平迅速下降。现在,我们已经成功地通过用苯基戊基或苯基己基侧链取代己基,大大提高了拮抗剂的效力和对代谢的抵抗力。与我们以前的先导化合物S -230相比,我们最有效的拮抗剂S -C025的IC 50为(120 pM)降低80倍以上,并且血浆半衰期更长。一个单一的主要代谢产物,它保留拮抗活性(IC 50,690,PM),并且具有在血浆中延长的寿命进行了观察。这些新型的高效OXE-R拮抗剂可能为治疗嗜酸性粒细胞疾病(如哮喘)提供新的策略。