Mixed Lineage Leukemia 1 (MLL1), an important member of Histone Methyltransferases (HMT) family, is capable of catalyzing mono-, di-, and trimethylation of Histone 3 lysine 4 (H3K4). The optimal catalytic activity of MLL1 requires the formation of a core complex consisting of MLL1, WDR5, RbBP5, and ASH2L. The Protein-Protein Interaction (PPI) between WDR5 and MLL1 plays an important role in abnormal gene expression during tumorigenesis, and disturbing this interaction may have a potential for the treatment of leukemia harboring MLL1 fusion proteins. In this review, we will summarize recent progress in the development of inhibitors targeting MLL1- WDR5 interaction.

混合谱系白血病1（MLL1）是组蛋白甲基转移酶（HMT）家族的重要成员，能够催化组蛋白3赖氨酸4（H3K4）的单甲基，二甲基和三甲基化。MLL1的最佳催化活性需要形成由MLL1，WDR5，RbBP5和ASH2L组成的核心配合物。WDR5和MLL1之间的蛋白质相互作用（PPI）在肿瘤发生过程中的异常基因表达中起重要作用，并且干扰这种相互作用可能对具有MLL1融合蛋白的白血病具有潜在的治疗作用。在这篇综述中，我们将总结靶向MLL1-WDR5相互作用的抑制剂的最新进展。