Discovery of 5-Benzylidene-2-phenyl-1,3-dioxane-4,6-diones as Highly Potent and Selective SIRT1 Inhibitors
作者:Chunpu Li、Sha-Sha Hu、Lisheng Yang、Min Wang、Jian-Dong Long、Bing Wang、Haozhen Han、Haoran Zhu、Sen Zhao、Jing-Gen Liu、Dongxiang Liu、Hong Liu
DOI:10.1021/acsmedchemlett.0c00559
日期:2021.3.11
mechanism, we determined the inhibition type of the inhibitor by enzyme kinetic analysis, showing that the inhibitor was competitive to the acetyl peptide and noncompetitive to NAD+. Further, the interaction of the inhibitor in SIRT1 was studied by using molecular docking, which was validated by the structure–activity relationship analysis of the inhibitors and the site-directed mutagenesis of SIRT1. Consistent
SIRT1 是 sirtuin 家族的成员,通过将 NAD +转化为烟酰胺和 2' - O-乙酰基-ADP-核糖来催化蛋白质的去乙酰化。选择性 SIRT1/2 抑制剂在结直肠癌、前列腺癌和骨髓性白血病的化疗中具有潜在应用。在这里,我们确定了具有 5-benzylidene-2-phenyl-1,3-dioxane-4,6-dione 支架的新型 SIRT1 抑制剂。最有效的抑制剂12n显示出 IC 50460 nM 和 SIRT1 对 SIRT2、SIRT3 和 SIRT5 的选择性分别为 113.5、254.3 和 10.83 倍。它不影响 SIRT6 的活性。为了阐明抑制机制,我们通过酶动力学分析确定了抑制剂的抑制类型,表明该抑制剂与乙酰肽具有竞争性,与NAD +没有竞争性。此外,通过分子对接研究了抑制剂在 SIRT1 中的相互作用,并通过抑制剂的构效关系分析和 SIRT1 的定点诱变