摘要
背景:越来越多的证据表明,多靶标定向配体在治疗复杂疾病(例如阿尔茨海默氏病(AD))方面具有巨大潜力。 目的:评价新型嵌合的8-羟基喹啉配体与合并的药效团作为AD的潜在多功能配体。 方法:体外评估了硝基氧代林,PBT2和化合物2-4对组织蛋白酶B,胆碱酯酶和单胺氧化酶的抑制作用。此外,通过基于光谱的分析评估了螯合,抗氧化性能和血脑屏障(BBB)的渗透性,并在免疫分析中确定了对淀粉样β(Aβ)聚集的抑制作用。进行基于细胞的测定以确定细胞毒性,针对毒性Aβ物种的神经保护作用以及化合物2对凋亡级联反应的影响。 结果:化合物2-4竞争性抑制组织蛋白酶Bβ-分泌酶活性,螯合金属离子并且是弱抗氧化剂。根据平行人工膜通透性测定,所有化合物均抑制Aβ聚集,而仅化合物2具有良好的BBB通透性。测试的配体2和3对10μM的SH-SY5Y和HepG2细胞无细胞毒性。化合物2对Aβ毒性具有神经保护作用,减少了caspase-3 / 7的活化并减少了用Aβ1-42处理的细胞的凋亡。 结论:综上所述,我们的数据表明化合物2有望用作AD的多功能配体。
关键词: 8-羟基喹啉,PBT2,硝基氧杂环丁烷,多目标定向配体(MTDL),阿尔茨海默氏病,组织蛋白酶B抑制,金属螯合,神经保护活性。
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