JAK3 inhibitors based on thieno[3,2-d]pyrimidine scaffold: design, synthesis and bioactivity evaluation for the treatment of B-cell lymphoma
作者:Fuyun Chi、Lixue Chen、Changyuan Wang、Lei Li、Xiuli Sun、Youjun Xu、Tengyue Ma、Kexin Liu、Xiaodong Ma、Xiaohong Shu
DOI:10.1016/j.bioorg.2019.103542
日期:2020.1
JAK3 is predominantly expressed in hematopoietic cells and has been a promising therapeutic target for the treatment of B-cell lymphoma. In this study, a new class of thieno[3,2-d]pyrimidines harboring acrylamide pharmacophore were synthesized as potent covalent JAK3 inhibitors (IC50 < 10 nM). Among them, 9a and 9 g displayed the strongest inhibitory potency against JAK3 kinase activity, with IC50
JAK3主要在造血细胞中表达,并已成为治疗B细胞淋巴瘤的有希望的治疗靶标。在这项研究中,合成了一类新型的带有丙烯酰胺药效基团的噻吩并[3,2-d]嘧啶类化合物,作为有效的共价JAK3抑制剂(IC50 <10 nM)。其中,9a和9 g表现出对JAK3激酶活性最强的抑制力,IC50值分别为1.9 nM和1.8 nM。此外,与参考药物Spebrutinib和Ibrutinib相比,9a不仅显示出对B淋巴瘤细胞增强的抗增殖活性,而且在浓度为20μM时,对正常外周血单核细胞(PBMC)的增殖抑制作用非常弱。机理分析表明,9a可以诱导B淋巴瘤细胞明显凋亡,并阻止JAK3-STAT3级联和BTK通路。综上所述,9a可以作为潜在的新型JAK3抑制剂用于治疗B细胞淋巴瘤。