Eicosatetraynoic acid (ETYA) is a non-metabolizable analog of Arachidonic acid (HY-109590) and also an inhibitor of the lipoxygenase (LOX)/cyclooxygenase (COX) pathway (ID50 = 8 µM and 4 µM). Eicosatetraynoic acid acts as a suicide substrate to inhibit the production of inflammatory mediators such as leukotrienes and prostaglandins. Eicosatetraynoic acid acts directly on cell membranes and membrane proteins to exert a wide range of effects, including blocking potassium channels, increasing cell membrane fluidity, elevating intracellular calcium levels, inhibiting DNA synthesis in tumor cells, inducing differentiation of certain cells, and specifically inhibiting the assembly and replication of orthopoxviruses. Eicosatetraynoic acid alleviates acute lung injury induced by chemicals such as phosgene[1][2][3][4][5].
