以FOLR1为目标的基于Actinium-225的α粒子疗法消除了卵巢癌
bioRxiv : the preprint server for biology
|November 24, 2025
概括
向叶酸受体α (FOLR1) 与actinium-225 (225Ac) 的α粒子疗法对卵巢癌显示出有前途. 这种新的方法在临床前模型中实现了显著的瘤回归和生存益处,毒性最小.
科学领域:
- 在瘤学瘤学.
- 核医学是一种核医学.
- 放射性药物疗法是一种放射性药物疗法.
背景情况:
- 卵巢癌的治疗面临着挑战,因为预后不佳和获得的耐药性.
- 向卵巢癌中过度表达的叶酸受体α (FOLR1) 是一个有前途的治疗策略.
- 虽然向FOLR1的抗体-药物结合物显示出希望,但耐药性是一个问题,需要新的方法,如向的α粒子疗法.
研究的目的:
- 评估针对卵巢癌的FOLR1向阿克-225 (225Ac) α粒子治疗的疗效和安全性.
- 在临床前卵巢癌模型中评估瘤特异性分娩和治疗结果.
主要方法:
- 开发和描述一个针对FOLR1的225Ac合物 (αFOLR1).
- 在SKOV3异种移植中使用纵向PET成像对瘤吸收的评估.
- 在临床前模型中评估治疗疗效,生存率和毒性.
- 对DNA损伤的分析和人类剂量测量估计.
主要成果:
- αFOLR1在SKOV3异种移植中显示出高瘤特异性吸收.
- 针对FOLR1的225Ac治疗实现了显著的瘤回归,80%的存活率和40%的完整反应.
- 该疗法诱导了瘤特异性的双链DNA损伤.
- 临床前研究表明,在正常组织中没有明显的毒性,人体剂量测量表明高瘤吸收剂量与最小的吸收剂量到健康组织.
结论:
- 针对FOLR1的225Acα粒子治疗是一种有效和安全的卵巢癌治疗方法.
- 该疗法证明了临床翻译的高可行性.
- 这种方法为治疗耐火性卵巢癌提供了一个有希望的新途径.
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