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结构优化和放射性标记的EphA2-向循环的瘤治疗术

Wenhao Liu^1,2, Yuting Dai¹, Jie Wang³

¹School of Biomedical Engineering & State Key Laboratory of Advanced Medical Materials and Devices, ShanghaiTech University, Shanghai 201210, China.

Journal of medicinal chemistry

|December 15, 2025

概括

一种新型的双循环,Pep-38,有效地针对Ephrin类型A受体2 (EphA2) 进行成像和治疗. 这种治疗药物在治疗过度表达EphA2.2的侵袭性癌症方面表现有前途.

科学领域:

生物化学生物化学
分子生物学分子生物学
放射化学放射化学是指辐射化学.

背景情况:

埃弗林A型受体2 (EphA2) 在侵袭性癌症中过度表达,使其成为关键的治疗目标.
开发针对EphA2的向药物对于推进癌症诊断和治疗至关重要.

研究的目的:

为了优化双环基架,以实现高亲和度的EphA2准.
开发和评估用于EphA2阳性恶性瘤的DOTA结合放射标志物.
评估优化的成像和放射性核酸治疗的治疗潜力.

主要方法:

对BCY6088双循环基架的系统优化导致了高亲和度联体Pep-34 (K_D = 3.6 nM).
开发了三种DOTA结合的放射标记物:Ga-Pep-36,Ga-Pep-37和Ga-Pep-38.
在HeLa-EphA2^OE外移植中的放射性追踪剂的体内评估和使用¹⁷⁷Lu-Pep-38.8的治疗评估.

主要成果:

Ga-Pep-38 显示出最佳的诊断特性,包括良好的血清稳定性和瘤向效率 (SUV = 1.8 在 60 分钟).
治疗Lu-Pep-38导致显著的,剂量依赖的瘤生长抑制 (高达98.5%),没有检测到的毒性.
-38在分子成像和向放射性核酸治疗方面都被证明是有效的.

结论:

-38是一种非常有前途的双循环类治疗药物,用于治疗EphA2过度表达的恶性瘤.
开发的射线追踪器使得精确的分子成像和有针对性的放射性核酸治疗成为可能.
-38为EphA2驱动癌症的精密瘤学提供了一个潜在的新策略.

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