A series of diarylurea inhibitors of the cardiac-specific kinase TNNI3K were developed to elucidate the biological function of TNNI3K and evaluate TNNI3K as a therapeutic target for the treatment of cardiovascular diseases. Utilizing a structure-based design, enhancements in kinase selectivity were engineered into the series, capitalizing on the established X-ray crystal structures of TNNI3K, VEGFR2, p38α, and B-Raf. Our efforts culminated in the discovery of an in vivo tool compound 47 (GSK329), which exhibited desirable TNNI3K potency and rat pharmacokinetic properties as well as promising kinase selectivity against VEGFR2 (40-fold), p38α (80-fold), and B-Raf (>200-fold). Compound 47 demonstrated positive cardioprotective outcomes in a mouse model of ischemia/reperfusion cardiac injury, indicating that optimized exemplars from this series, such as 47, are favorable leads for discovering novel medicines for cardiac diseases.

中文翻译：

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通过设计对 VEGFR2、p38α 和 B-Raf 的选择性来鉴定心脏特异性激酶 TNNI3K 的二芳基脲抑制剂

开发了一系列心脏特异性激酶 TNNI3K 的二芳基脲抑制剂，以阐明 TNNI3K 的生物学功能并评估 TNNI3K 作为治疗心血管疾病的治疗靶点。利用基于结构的设计，激酶选择性的增强被设计到系列中，利用已建立的 TNNI3K、VEGFR2、p38α 和 B-Raf 的 X 射线晶体结构。我们的努力最终发现了一种体内工具化合物47（GSK329），该化合物表现出理想的 TNNI3K 效力和大鼠药代动力学特性，以及对 VEGFR2（40 倍）、p38α（80 倍）和 B-的有希望的激酶选择性Raf（>200 倍）。化合物47在缺血/再灌注心脏损伤小鼠模型中显示出积极的心脏保护结果，表明该系列的优化样本，例如47，是发现治疗心脏病的新药的有利线索。