making it an attractive target for both imaging and therapy. Since little is known about the optimized approach for radioligands of nuclear proteins, linker optimization strategies were used to improve pharmacokinetics and tumor absorption, including the adjustment of the length, flexibility/rigidity, and hydrophilicity/lipophilicity of linkers. Molecular docking was conducted for virtual screening and followed
细胞周期蛋白依赖性激酶 19 (CDK19) 在前列腺癌中过度表达,使其成为成像和治疗的有吸引力的靶点。由于对核蛋白放射性
配体的优化方法知之甚少,因此采用接头优化策略来改善药代动力学和肿瘤吸收,包括接头长度、柔性/刚性和亲
水性/亲油性的调整。进行分子对接以进行虚拟筛选,然后进行IC 50测定。 BALB/c 小鼠和 P-16 异种移植物均用于组织分布和 PET/CT 成像。
配体68 Ga-10c在注射 5 分钟后在肿瘤中表现出高吸收,并在 3 小时内维持长期成像。此外, 68 Ga-10c在肿瘤内表现出缓慢的清除,并且主要在肝脏和肾脏中代谢,显示出缓解代谢压力和增强组织安全性的潜力。因此,该接头优化策略非常适合CDK19,并为其他核靶点的放射性
配体提供参考。