A New Approach to Searching for the Bioactive Molecules Regulating Potassium Channel

本研究旨在通过计算机模拟筛选一种新型的具有调节离子通道功能的生物活性分子。鞘氨醇符合内向整流钾（Kir）通道4的药效团模型。1阻滞剂。鞘氨醇对Kir4有抑制作用。1频道当刺激经由神经酰胺从鞘磷脂生物合成鞘氨醇时，Kir4. 1通道电流降低。这些结果表明内源性鞘脂抑制Kir4。1通道通过鞘氨醇。

This study aimed to explore a novel bioactive molecule that regulate ion channel function by in silico screening with a pharmacophore model of its chemical ligands. Sphingosine fits the pharmacophore model for inwardly rectifier potassium(Kir) channel 4. 1 blockers. Sphingosine has an inhibitory effect on Kir4. 1 channels. When biosynthesis of sphingosine from sphingomyeline via ceramide is stimulated, Kir4. 1 channel currents decrease. These results suggest that endogenous sphingolipids inhibit Kir4. 1 channels via sphingosine.