使用CD46向的放射性免疫疗法-抗体药物合物的前列腺癌和多发性髓瘤的协同治疗
Anil P Bidkar1, Scott Bidlingmaier2, Anju Wadhwa1
1University of California, San Francisco San Francisco, CA United States.
概括
用联合抗体-药物合物 (ADC) 和α颗粒疗法向CD46显示在前列腺癌和多发性髓瘤模型中具有协同效果. 这种双重方法提供了强大的瘤控制与可接受的毒性,支持临床试验.
科学领域:
- 在瘤学瘤学.
- 放射化学 放射化学是指辐射化学.
- 免疫治疗是一种免疫疗法.
背景情况:
- CD46是一种跨膜蛋白,在各种癌症中过度表达,包括前列腺癌和多发性髓瘤.
- 针对CD46提供了一种有前途的癌症治疗策略.
- 抗体药物联结剂 (ADC) 和α粒子放射免疫疗法 (RIT) 是有效的癌症治疗方法.
研究的目的:
- 评估结合CD46向抗体-药物合物 (ADC) 和基于Actinium-225的α粒子疗法的协同疗效.
- 在临床前癌症模型中评估新型组合策略的毒性和治疗效果.
主要方法:
- 测试了两个组合策略:同时使用ADC (YS5-MMAE) 和标记为Actinium-225的抗体 ([225Ac]Macropa-PEG4-YS5),以及双有效载荷放射性结合物 (R-ADC).
- 试验室研究包括细胞活力,DNA损伤和亡测定.
- 在体内研究中,利用前列腺癌和多发性骨髓瘤的异种移植模型来评估生物分布,毒性和治疗疗效.
主要成果:
- 与单一疗法相比,组合疗法显示出协同作用的G2/M细胞周期停止和增强的DNA损伤 (γ-H2AX焦点).
- 两者同时使用和R-ADC策略导致显著的瘤生长抑制和改善的生存率.
- 双有效载荷结构在各种临床前模型中显示出强大的抗瘤活性.
结论:
- 在CD46向支架上整合微管抑制 (通过ADC) 和α辐射 (通过RIT) 实现了强效和耐受性良好的瘤控制.
- 双有效载荷构造与剂量计CD46免疫PET成像相容,促进临床翻译.
- 这种综合方法保证了前列腺癌和多发性骨髓瘤的早期临床试验的进展.
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