Small molecule inhibitors of intestinal epithelial anion exchanger SLC26A3 (DRA) with a luminal, extracellular site of action
作者:Onur Cil、Marc O. Anderson、Livia de Souza Goncalves、Joseph-Anthony Tan、Peter M. Haggie、Alan S. Verkman
DOI:10.1016/j.ejmech.2023.115149
日期:2023.3
nes; 3-carboxy-2-phenylbenzofurans and benzoxazin-4-ones) with IC50 down to 100 nM. Kinetic washout and onset of action studies revealed an extracellular site of action for the thiazolo-pyrimidin-5-one and 3-carboxy-2-phenylbenzofuran inhibitors. Molecular docking computations revealed putative binding sites for these inhibitors. In a loperamide model of constipation in mice, orally administered 7
阴离子交换蛋白 SLC26A3(在腺瘤中下调,DRA)在结肠肠上皮细胞的腔膜中表达,促进 Cl -和草酸盐的吸收。我们之前鉴定了一种 4,8-二甲基香豆素类 SLC26A3 抑制剂,其作用于 SLC26A3 细胞质表面,并证明了它们在便秘和高草酸尿症小鼠模型中的功效。在这里,从初步筛选中筛选出 50,000 种新化合物和 1740 种活性化合物的化学类似物,产生了五类新型 SLC26A3 选择性抑制剂(1,3-二氧代异吲哚啉-酰胺;N-(5-氨磺酰基-1,3,4-噻二唑-2-yl)acetamides; thiazolo-pyrimidin-5-ones; 3-carboxy-2-phenylbenzofurans and benzoxazin-4-ones) with IC 50低至 100 纳米。动力学清除和起效研究揭示了 thiazolo-pyrimidin-5-one 和 3-ca