Research Progress on Biological Mechanism of Epoxyeicosatrienoic Acids

Epoxyeicosatrienoic acids (EETs) are synthesized from arachidonic acid by cytochrome P450 epoxygenases.They modulate ion transport and gene expression,producing vasorelaxation as well as antiinflammatory and cell proliferation effects.Many of the functional effects of EETs occur through activation of signal transduction pathways and modulation of gene expression,events probably initiated by binding to a putative cell surface EETs receptor.However,EETs are rapidly taken up by cells and are incorporated into and released from phospholipids,it suggests that some functional effects may occur through a direct interaction between the EETs and an intracellular effector system.EETs synthesis,metabolism,mechanism of action are reviewed in this paper.     

环氧二十碳三烯酸生物学作用机制的研究进展

花生四烯酸经过细胞色素P450 (cytochrome P450,CYP)表氧化酶途径生成环氧二十碳三烯酸(epoxyeicosatrienoic acids,EETs)。EETs可以通过调节离子通道和基因表达,从而发挥促进血管舒张、抗炎和细胞增殖等作用。EETs也可通过激活信号转导途径和调节基因表达或与细胞膜受体结合发挥多种生物学功能。EETs也可快速与细胞膜磷脂结合后以共吸收的方式被细胞摄取。文章主要从EETs的来源、去路、作用机制等方面进行讨论。