伊布替尼
医学
布鲁顿酪氨酸激酶
药理学
心房颤动
内科学
原癌基因酪氨酸蛋白激酶Src
酪氨酸激酶抑制剂
酪氨酸激酶
癌症研究
受体
白血病
慢性淋巴细胞白血病
癌症
作者
Ling Xiao,Joe‐Elie Salem,Sebastian Clauß,Alan Hanley,Aneesh Bapat,Maarten Hulsmans,Yoshiko Iwamoto,Gregory R. Wojtkiewicz,Murat Çetinbaş,Maximilian J. Schloss,Justin G. Tedeschi,Bénédicte Lebrun‐Vignes,Alicia Lundby,Ruslan I. Sadreyev,Javid Moslehi,Matthias Nahrendorf,Patrick T. Ellinor,David J. Milan
出处
期刊:Circulation
[Ovid Technologies (Wolters Kluwer)]
日期:2020-12-22
卷期号:142 (25): 2443-2455
被引量:111
标识
DOI:10.1161/circulationaha.120.049210
摘要
Ibrutinib is a Bruton tyrosine kinase inhibitor with remarkable efficacy against B-cell cancers. Ibrutinib also increases the risk of atrial fibrillation (AF), which remains poorly understood.We performed electrophysiology studies on mice treated with ibrutinib to assess inducibility of AF. Chemoproteomic analysis of cardiac lysates identified candidate ibrutinib targets, which were further evaluated in genetic mouse models and additional pharmacological experiments. The pharmacovigilance database, VigiBase, was queried to determine whether drug inhibition of an identified candidate kinase was associated with increased reporting of AF.We demonstrate that treatment of mice with ibrutinib for 4 weeks results in inducible AF, left atrial enlargement, myocardial fibrosis, and inflammation. This effect was reproduced in mice lacking Bruton tyrosine kinase, but not in mice treated with 4 weeks of acalabrutinib, a more specific Bruton tyrosine kinase inhibitor, demonstrating that AF is an off-target side effect. Chemoproteomic profiling identified a short list of candidate kinases that was narrowed by additional experimentation leaving CSK (C-terminal Src kinase) as the strongest candidate for ibrutinib-induced AF. Cardiac-specific Csk knockout in mice led to increased AF, left atrial enlargement, fibrosis, and inflammation, phenocopying ibrutinib treatment. Disproportionality analyses in VigiBase confirmed increased reporting of AF associated with kinase inhibitors blocking Csk versus non-Csk inhibitors, with a reporting odds ratio of 8.0 (95% CI, 7.3-8.7; P<0.0001).These data identify Csk inhibition as the mechanism through which ibrutinib leads to AF. Registration: URL: https://ww.clinicaltrials.gov; Unique identifier: NCT03530215.
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