The potential of Rhein's aromatic amines for Parkinson's disease prevention and treatment: α-Synuclein aggregation inhibition and disaggregation of preformed fibers
作者:Wei Zhang、Wei Liu、Ya-Dong Zhao、Li-Zi Xing、Ji Xu、Rui-Jun Li、Yun-Xiao Zhang
DOI:10.1016/j.bmcl.2023.129564
日期:2024.1
residues, demonstrating promising inhibitory activity against α-Syn aggregation in vitro, with low IC50 values (1.35 and 1.08 μM, respectivly). These inhibitors acted throughout the entire aggregation process by stabilizing α-Syn's conformation and preventing the formation of β-sheet aggregates. They also effectively disassembled preformed α-Syn oligomers and fibrils. Preliminary mechanistic insights indicated
α-Syn 的聚集是帕金森病(PD) 的关键机制。有效维持 α-Syn 蛋白质稳态涉及抑制其聚集和促进解聚。在这项研究中,我们开发了一系列基于大黄酸的芳香酰胺衍生物。这些化合物中的两种,4,5-二羟基-N- (3-羟基苯基)-9,10-二氧代-9,10-二氢蒽-2-甲酰胺( a5 )和4,5-二羟基-N- (2-羟基) -4-氯苯基)-9,10-二氧代-9,10-二氢蒽-2-甲酰胺 ( a8 ),对 α-Syn 残基表现出良好的结合亲和力,在体外表现出对 α-Syn 聚集的良好抑制活性,且 IC 值较低50 个值(分别为 1.35 和 1.08 μM)。这些抑制剂通过稳定 α-Syn 的构象并防止 β-折叠聚集体的形成,在整个聚集过程中发挥作用。他们还有效地分解了预先形成的 α-Syn 寡聚物和原纤维。初步的机制见解表明,它们与原纤维内的特定域结合,诱导原纤维不稳定、塌陷以及更小的聚集体和单体