Phosphonothioate and Fluoromethylene Phosphonate Analogues of Cyclic Phosphatidic Acid: Novel Antagonists of Lysophosphatidic Acid Receptors
作者:Yong Xu、Guowei Jiang、Ryoko Tsukahara、Yuko Fujiwara、Gabor Tigyi、Glenn D. Prestwich
DOI:10.1021/jm060351+
日期:2006.8.1
expressing the individual EDG-family GPCRs. In particular, the phosphonothioate ccPA analogue inhibited Ca2+ release through LPA1/LPA3 activation and was an LPA1/LPA3 antagonist. The monofluoromethylene phosphonate ccPA analogue was also a potent LPA1/LPA3 antagonist. In contrast, the difluoromethylene phosphonate ccPA analogue was a weak LPAR agonist, while ccPA itself had neither agonist nor antagonist
溶血磷脂酸(LPA)G蛋白偶联受体(GPCR)的同工型选择性拮抗剂在细胞生物学和临床应用中具有重要的潜在用途。通过化学合成制备了新的碳环磷脂酸(ccPA)的硫代磷酸酯和氟代亚甲基膦酸酯类似物。使用Yasuda-Shedlovsky外推法滴定法测量了这些两亲性磷脂和母体环状膦酸酯的pKa值。在表达单个EDG家族GPCR的RH7777细胞中,使用Ca2 +动员测定法,针对LPA受体(LPAR)亚型特异性激动剂和拮抗剂活性,对这些和其他ccPA类似物的药理特性进行了表征。特别是,硫代磷酸膦酸酯ccPA类似物通过LPA1 / LPA3激活抑制Ca2 +释放,并且是LPA1 / LPA3拮抗剂。单氟亚甲基膦酸酯ccPA类似物也是有效的LPA1 / LPA3拮抗剂。相反,二氟亚甲基膦酸酯ccPA类似物是弱LPAR激动剂,而ccPA本身既没有激动剂也没有拮抗剂活性。