Acalabrutinib (ACP-196): A Covalent Bruton Tyrosine Kinase Inhibitor with a Differentiated Selectivity and In Vivo Potency Profile
作者:Tjeerd Barf、Todd Covey、Raquel Izumi、Bas van de Kar、Michael Gulrajani、Bart van Lith、Maaike van Hoek、Edwin de Zwart、Diana Mittag、Dennis Demont、Saskia Verkaik、Fanny Krantz、Paul G. Pearson、Roger Ulrich、Allard Kaptein
DOI:10.1124/jpet.117.242909
日期:2017.11
limit inhibition of off-target kinases having cysteine-mediated covalent binding potential. Acalabrutinib demonstrated higher biochemical and cellular selectivity than ibrutinib and spebrutinib (compounds 2 and 3, respectively). Importantly, off-target kinases, such as epidermal growth factor receptor (EGFR) and interleukin 2-inducible T cell kinase (ITK), were not inhibited. Determination of the inhibitory
几种针对B细胞恶性肿瘤和自身免疫性疾病的小分子Bruton酪氨酸激酶(BTK)抑制剂正在开发中,每种抑制剂均具有独特的功效和选择性模式。在这里,我们描述了BTK抑制剂acalabrutinib [化合物1,ACP-196(4- [8-氨基-3-[(2S)-1-but-2-yylylpyrrolidin-2-yl]咪唑[1,5-] a]吡嗪-1-基] -N-(2-吡啶基)苯甲酰胺)]。Acalabrutinib拥有一个反应性丁炔酰胺基团,该基团与BTK中的Cys481共价结合。相对于此处描述的其他BTK抑制剂,acalabrutinib降低的固有反应性有助于限制对具有半胱氨酸介导的共价结合潜能的脱靶激酶的抑制。Acalabrutinib的生化和细胞选择性高于ibrutinib和spebrutinib(分别为化合物2和3)。重要的,脱靶激酶,如表皮生长因子受体(EGFR)和白介素2诱导性T细胞