Inhibition of human gastric and pancreatic lipases by chiral alkylphosphonates. A kinetic study with 1,2-didecanoyl-sn-glycerol monolayer
作者:Jean-François Cavalier、Stéphane Ransac、Robert Verger、Gérard Buono
DOI:10.1016/s0009-3084(99)00028-6
日期:1999.7
potential inhibitors of human gastric lipase (HGL) and human pancreatic lipase (HPL). The inhibitory properties of each enantiomer have been tested with the monomolecular films technique in addition to an enyzme linked immunosorbent assay (ELISA) in order to estimate simultaneously the residual enzymatic activity as well as the interfacial lipase binding. With both lipases, no obvious correlation between
对映体纯的烷基膦酸酯化合物RR'P(O)PNP(R = CnH2n + 1,R'= OY,Y = Cn'H2n'+ 1,n = n'或n不等于n'; PNP =对硝基苯氧基)注意到(RY),模拟了在羧酸酯水解过程中发生的过渡态,并作为人胃脂肪酶(HGL)和人胰脂肪酶(HPL)的潜在抑制剂进行了研究。除酶联免疫吸附测定(ELISA)外,还用单分子膜技术测试了每种对映体的抑制特性,以便同时估算残留的酶活性和界面脂肪酶结合。对于两种脂肪酶,在导致一半抑制的抑制剂摩尔分数(α50)与链长,R或Y之间都没有明显的相关性。(R11Y16)是HPL的最佳抑制剂,(R10Y11)是HGL的最佳抑制剂。我们观察到高纯度的对映异构体,无论是纯对映体烷基膦酸酯抑制剂还是鳞片混合物。我们还首次表明,该对映体选择性识别可以在脂肪酶的催化步骤或初始界面吸附步骤中发生。这些实验结果用两种对映体抑制剂的共价动力学模型和假