Design and synthesis of Imidazo[1,2-b]pyridazine IRAK4 inhibitors for the treatment of mutant MYD88 L265P diffuse large B-cell lymphoma
作者:Yun Chen、Gang Bai、Yi Ning、Shi Cai、Tao Zhang、Peiran Song、Jinpei Zhou、Wenhu Duan、Jian Ding、Hua Xie、Huibin Zhang
DOI:10.1016/j.ejmech.2020.112092
日期:2020.3
through the activation of NF-κB by interleukin-1 receptor associated kinase 4 (IRAK4) in diffuse large B-cell lymphoma (DLBCL), highlighting IRAK4 as a therapeutic target for tumors driven by aberrant MYD88 signaling. Herein, we report the design, synthesis, and structure-activity relationships of imidazo[1,2-b]pyridazines as potent IRAK4 inhibitors. The representative compound 5 exhibited excellent
携带MYD88 L265P突变可通过弥漫性大B细胞淋巴瘤(DLBCL)中的白介素-1受体相关激酶4(IRAK4)激活NF-κB来触发肿瘤生长,从而突出IRAK4作为异常MYD88信号驱动的肿瘤的治疗靶标。在这里,我们报告咪唑并[1,2-b]哒嗪作为有效的IRAK4抑制剂的设计,合成和构效关系。代表性化合物5表现出优异的IRAK4效能(IRAK4 IC50 = 1.3nM)和有利的激酶选择性特征。它在细胞毒性试验中证明了具有MYD88 L265P突变的活化B细胞样(ABC)亚型DLBCL的细胞选择性。通过Western blot分析IRAK4的磷酸化和OCI-LY10和TMD8细胞中下游信号的传递,进一步验证了化合物5的激酶抑制效率。除了,化合物5和BTK抑制剂依鲁替尼联合使用可协同降低TMD8细胞的生存能力。这些结果表明,化合物5可能是用于治疗突变MYD88 DLBCL的有希望的IRAK4抑制剂。