Autosomal dominant polycystic kidney disease (ADPKD) is the most prevalent monogenic human disease, but to date, only one therapy (tolvaptan) is approved to treat kidney cysts in ADPKD patients. Cyclin-dependent kinase 5 (CDK5), an atypical member of the cyclin-dependent kinase family, has been implicated as a target for treating ADPKD. However, no compounds have been disclosed to date that selectively inhibit CDK5 while sparing the broader CDK family members. Herein, we report the discovery of CDK5 inhibitors, including GFB-12811, that are highly selective over the other tested kinases. In cellular assays, our compounds demonstrate CDK5 target engagement while avoiding anti-proliferative effects associated with inhibiting other CDKs. In addition, we show that the compounds in this series exhibit promising in vivo PK profiles, enabling their use as tool compounds for interrogating the role of CDK5 in ADPKD and other diseases.

中文翻译：

---

CDK5高选择性抑制剂的发现与优化

常染色体显性遗传多囊肾病（ADPKD）是最普遍的单基因人类疾病，但迄今为止，只有一种疗法（托伐普坦）被批准用于治疗 ADPKD 患者的肾囊肿。细胞周期蛋白依赖性激酶 5 (CDK5) 是细胞周期蛋白依赖性激酶家族的非典型成员，已被认为是治疗 ADPKD 的靶标。然而，迄今为止尚未公开选择性抑制CDK5同时保留更广泛的CDK家族成员的化合物。在此，我们报告了 CDK5 抑制剂的发现，包括GFB-12811，它们对其他测试的激酶具有高度选择性。在细胞试验中，我们的化合物证明了 CDK5 靶点的参与，同时避免了与抑制其他 CDK 相关的抗增殖作用。此外，我们表明该系列中的化合物表现出有前景的体内PK 曲线，使其能够用作研究 CDK5 在 ADPKD 和其他疾病中的作用的工具化合物。