Inhibition of Thiamine Diphosphate-Dependent Enzymes by Triazole-Based Thiamine Analogues
作者:Alex H. Y. Chan、Terence C. S. Ho、Imam Fathoni、Rebecca Pope、Kevin J. Saliba、Finian J. Leeper
DOI:10.1021/acsmedchemlett.3c00047
日期:2023.5.11
Thiamine is metabolized into the coenzyme thiamine diphosphate (ThDP). Interrupting thiamine utilization leads to disease states. Oxythiamine, a thiamine analogue, is metabolized into oxythiamine diphosphate (OxThDP), which inhibits ThDP-dependent enzymes. Oxythiamine has been used to validate thiamine utilization as an anti-malarial drug target. However, high oxythiamine doses are needed in vivo because
硫胺素代谢为辅酶硫胺素二磷酸 (ThDP)。中断硫胺素的利用会导致疾病状态。氧硫胺素是一种硫胺素类似物,代谢为氧硫胺二磷酸 (OxThDP),可抑制 ThDP 依赖性酶。氧硫胺已被用于验证硫胺素作为抗疟疾药物靶点的利用。然而,由于其快速清除,体内需要高剂量的氧硫胺素,并且其效力随着硫胺素水平的升高而显着降低。我们在此报告了具有三唑环和异羟肟酸盐尾巴的细胞可渗透硫胺素类似物,取代了 ThDP 的噻唑鎓环和二磷酸基团。我们描述了它们对 ThDP 依赖性酶和恶性疟原虫的广谱竞争性抑制作用增殖。我们展示了如何通过同时使用我们的化合物和氧硫胺素来探测细胞硫胺素利用途径。