Investigation of trypanothione reductase inhibitory activity by 1,3,4-thiadiazolium-2-aminide derivatives and molecular docking studies
作者:Raquel F. Rodrigues、Denise Castro-Pinto、Aurea Echevarria、Camilla M. dos Reis、Catarina N. Del Cistia、Carlos Mauricio R. Sant’Anna、Filipa Teixeira、Helena Castro、Marilene Canto-Cavalheiro、Leonor L. Leon、Ana Tomás
DOI:10.1016/j.bmc.2012.01.009
日期:2012.3
The biological activities of a series of mesoionic 1,3,4-thiadiazolium-2-aminide derivatives have been studied. The most active compounds (MI-HH; MI-3-OCH3; MI-4-OCH3 and MI-4-NO2) were evaluated to determine their effect on trypanothione reductase (TryR) activity in Leishmania sp. and Trypanosoma cruzi. Among the assayed compounds, only MI-4-NO2 showed enzyme inhibition effect on extracts from different
已经研究了一系列中离子1,3,4-噻二唑-2-氨基衍生物的生物活性。评价了活性最高的化合物(MI-HH; MI-3-OCH 3; MI-4-OCH 3和MI-4-NO 2),以确定它们对利什曼原虫中锥虫硫醚还原酶(TryR)活性的影响。和克鲁斯锥虫。在所测定的化合物中,只有MI-4-NO 2对来自不同寄生虫培养物的提取物显示出酶抑制作用,这已通过来自克鲁氏锥虫(Tc TryR)和婴儿利什曼原虫(Li TryR)的重组酶得到证实。酶动力学测定Li TryR证明了MI-4-NO 2的非竞争性抑制作用。分子对接研究表明,中离子化合物可与底物分子一起有效地对接至底物结合位点。中离子化合物也是NADPH和FAD结合位点的有效配体,并且NADPH结合位点被认为是所有三个结合位点中最好的。基于理论结果,在分子水平上提出了对MI-4-NO 2酶抑制作用的解释。以TryR为分子靶标,作为抗利什曼病或恰加斯氏