Structural Optimization and Biological Evaluation of Substituted Bisphenol A Derivatives as β-Amyloid Peptide Aggregation Inhibitors

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• 作者：Yu Zhou ; Chunyi Jiang ; Yaping Zhang ; Zhongjie Liang ; Wenfeng Liu ; Liefeng Wang ; Cheng Luo ; Tingting Zhong ; Yi Sun ; Linxiang Zhao ; Xin Xie ; Hualiang Jiang ; Naiming Zhou ; Dongxiang Liu ; Hong Liu
• 刊名：Journal of Medicinal Chemistry
• 出版年：2010
• 出版时间：August 12, 2010
• 年：2010
• 卷：53
• 期：15
• 页码：5449-5466
• 全文大小：1282K
• 年卷期：v.53,no.15(August 12, 2010)
• ISSN：1520-4804

文摘

The aggregation of Aβ is a crucial step in the etiology of Alzheimer’s disease. Our previous work showed that Aβ undergoes α-helix/β-sheet intermediate structures during the conformational transition, and an Aβ aggregation inhibitor (1) was discovered by targeting the intermediates. Here, structure optimization toward compound 1 was performed and 34 novel derivatives were designed and synthesized. Nine compounds showed more effective inhibitory activity than the hit compound 1 in ThT fluorescence assay. Among them, compound 43 demonstrated more excellent inhibitory potency, which not only can suppress the aggregation of Aβ but also can dissolve the preformed fibrils as shown by CD spectroscopy, PICUP and AFM assays. Cellular assay indicated that 43 has no toxicity to neuronal cells, moreover, can effectively inhibit Aβ₁₋₄₂-induced neutrotoxicity and increase the cell viability. Together, on the basis of these positive results, these novel chemical structures may provide a promising potential for therapeutic applications in AD and other types of neurodegenerative disorders.