Inhibition of the menin-mixed lineage leukemia (MLL) protein-protein interaction is a promising new therapeutic strategy for the treatment of acute leukemia carrying MLL fusion (MLL leukemia). We describe herein our structure-based design, synthesis, and evaluation of a new class of small-molecule inhibitors of the menin-MLL interaction (hereafter called menin inhibitors). Our efforts have resulted in the discovery of highly potent menin inhibitors, as exemplified by compound 42 (M-89). M-89 binds to menin with a Kd value of 1.4 nM and effectively engages cellular menin protein at low nanomolar concentrations. M-89 inhibits cell growth in the MV4;11 and MOLM-13 leukemia cell lines carrying MLL fusion with IC50 values of 25 and 55 nM, respectively, and demonstrates >100-fold selectivity over the HL-60 leukemia cell line lacking MLL fusion. The determination of a co-crystal structure of M-89 in a complex with menin provides the structural basis for their high-affinity interaction. Further optimization of M-89 may lead to a new class of therapy for the treatment of MLL leukemia.

中文翻译：

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基于结构的M-89作为Menin混合谱系白血病（Menin-MLL）蛋白-蛋白质相互作用的高效抑制剂的发现。

抑制Menin混合谱系白血病（MLL）蛋白-蛋白相互作用是一种治疗带有MLL融合的急性白血病（MLL白血病）的有前途的新治疗策略。我们在本文中描述了我们基于结构的设计，合成和评估一类新型的Menin-MLL相互作用的小分子抑制剂（以下称为Menin抑制剂）。我们的努力导致发现了高效的menin抑制剂，如化合物42（M-89）所示。M-89以1.4 nM的Kd值与Menin结合，并在低纳摩尔浓度下有效地与细胞Menin蛋白结合。M-89抑制带有MLL融合的MV4; 11和MOLM-13白血病细胞系的细胞生长，其IC50值分别为25和55 nM，并且相对于缺乏MLL融合的HL-60白血病细胞系表现出> 100倍的选择性。与Menin的复合物中M-89的共晶体结构的确定为其高亲和力相互作用提供了结构基础。M-89的进一步优化可能会导致治疗MLL白血病的新疗法。