Synthetic thiosemicarbazones as a new class of Mycobacterium tuberculosis protein tyrosine phosphatase A inhibitors
作者:Larissa Sens、Ana Caroline Arruda de Souza、Lucas Antonio Pacheco、Angela Camila Orbem Menegatti、Mattia Mori、Alessandra Mascarello、Ricardo José Nunes、Hernán Terenzi
DOI:10.1016/j.bmc.2018.10.030
日期:2018.11
Mycobacterium tuberculosis secretes two protein tyrosine phosphatases as virulence factors, PtpA and PtpB. Inhibition studies of these enzymes have shown significant attenuation of the M. tuberculosis growth in vivo. As PtpA mediates many effects on the regulation of host signaling ensuring the intracellular survival of the bacterium we report, for the first time, thiosemicarbazones as potential novel
结核分枝杆菌分泌两种蛋白酪氨酸磷酸酶作为致病因子,PtpA和PtpB。对这些酶的抑制研究显示出体内结核分枝杆菌生长的显着减弱。由于PtpA介导了对宿主信号传导调控的许多影响,从而确保了细菌的细胞内存活,我们首次报道了硫代半脲酮作为潜在的新型PtpA抑制剂。合成了几种化合物并进行了生物学评估,得出有趣的结果。酶的动力学分析表明,化合物5,9和18是PTPA的非竞争性抑制剂,与ķ我值范围从1.2到5.6 µM。建模研究阐明了体外观察到的构效关系,并指出了PtpA结构中可能存在的变构结合位点。据我们所知,这是有力的非竞争性PtpA抑制剂的首次公开,其在未来研究和开发类似物方面具有巨大潜力。