binding region and therefore blocked the access of the peptide substrate to the FAD, finally leading to the demethylase activity inhibition of LSD1. The findings indicate that aryl hydrazines are new scaffolds for the design of LSD1 inhibitors, the identification of D8 provides further evidence for our previously proposed general principle that fused heterocycles with an amine group are potentially active
基于经验发现(EBD)策略,首先使用了苯乙嗪设计新的基于芳基
肼的L
SD1
抑制剂。在这些化合物中,D8 以可逆方式有效抑制L
SD1(IC 50 = 882.30 nM)。化合物D8对L
SD1的选择性高于MAO-A / B,并显示H3K4me2与L
SD1的竞争性结合。H3K4me2和L
SD1之间的相互作用也通过Co-IP分析得以证实。在L
SD1过表达的A549细胞中,化合物D8剂量依赖性诱导L
SD1底物H3K4me1 / 2和H3K9me1 / 2积累,显示细胞靶标与L
SD1结合并显着抑制A549细胞的细胞迁移。对接研究表明,化合物D8占据了肽结合区,因此阻止了肽底物进入FAD,最终导致L
SD1的去甲基化酶活性受到抑制。研究结果表明芳基
肼是设计L
SD1
抑制剂的新支架,D8的鉴定为我们先前提出的通用原理提供了进一步的证据,即具有胺基的稠合杂环通过与H
SD底物竞争结合L
SD1可能对L
SD1具有活性。