SAR and molecular mechanism studies of monoamine oxidase inhibition by selected chalcone analogs
作者:Raed Shalaby、Jacobus P. Petzer、Anél Petzer、Usman M. Ashraf、Ealla Atari、Fawaz Alasmari、Sivarajan Kumarasamy、Youssef Sari、Ashraf Khalil
DOI:10.1080/14756366.2019.1593158
日期:2019.1.1
reversible competitive mode of inhibition. Most of the synthesized chalcone analogs showed a better selectivity toward MAO-B. However, introducing of 2,4,6-trimethoxy substituents on ring B shifted the selectivity toward MAO-A. In addition, we investigated the molecular mechanism of MAO-B inhibition by selected chalcone analogs. Our results revealed that these selected chalcone analogs increased dopamine levels
抽象的 本研究描述了一系列22查尔酮类似物的合成。这些化合物被评估为潜在的人类MAO-A和MAO-B抑制剂。化合物对两种同工型表现出不同的选择性。发现IC 50值在微摩尔至亚微摩尔范围内。该ķ我化合物16的MAO-A和MAO-B抑制值分别为0.047和0.020μM。酶抑制剂混合物的透析表明抑制作用是可逆的竞争方式。大多数合成的查耳酮类似物对MAO-B表现出更好的选择性。然而,在环B上引入2,4,6-三甲氧基取代基使选择性向MAO-A转移。此外,我们研究了所选查耳酮类似物抑制MAO-B的分子机制。我们的结果表明,这些选定的查尔酮类似物可增加大鼠肝癌(H4IIE)细胞中的多巴胺水平,并降低MAO-B酶的相对mRNA表达。