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An Automated Radiosynthesis of [68Ga]Ga-FAPI-46 for Routine Clinical Use
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瘤向的介质蛋白2增强了FAP导向的放射性灵配体治疗药物的抗癌活性
Andrea Galbiati1, Paulina Dorten2, Ettore Gilardoni1
1Research and Development Department, Philochem AG, Otelfingen, Switzerland.
概括
结合纤维细胞激活蛋白 (FAP) 向的放射性连接体与互白素-2疗法,协同消除了FAP阳性瘤. 这种组合疗法在临床前模型中通过激活自然杀手细胞,证明了瘤的完全缓解.
科学领域:
- 在瘤学瘤学.
- 放射性药物疗法是一种放射性药物疗法.
- 免疫治疗是一种免疫疗法.
背景情况:
- 纤维细胞激活蛋白 (FAP) 是癌症治疗的一个有前途的目标.
- 放射性联体疗法为瘤提供有针对性的辐射输送.
- 介素-2 (IL-2) 是一种具有抗癌潜力的免疫调节性细胞因子.
研究的目的:
- 为了评估结合Lu标记的FAP向放射性连接体 (OncoFAP和BiOncoFAP) 与L19-IL2的抗瘤疗效.
- 评估这种组合治疗在临床前癌症模型中的生物分布,剂量测量和治疗协同作用.
主要方法:
- 使用SPECT/CT成像来研究Lu标记的FAP向剂的生物分布.
- 在携带FAP阳性瘤 (HT-1080.hFAP和SK-RC-52.hFAP) 的小鼠中评估了抗癌效应.
- 基于质谱的蛋白质组学被用来确定治疗机制.
主要成果:
- 与Lu-OncoFAP相比,Lu-BiOncoFAP显示了较高的瘤吸收和自我吸收剂量.
- 用Lu-BiOncoFAP和L19-IL2进行组合治疗,导致所有接受治疗的动物的瘤完全缓解.
- 蛋白质组分析显示,瘤微环境中的自然杀手细胞激活 (大酶和穿孔素1) 的增强.
结论:
- 针对FAP的放射性干治疗药物和IL-2的组合显示出对FAP阳性瘤的协同抗癌效应.
- 这一临床前发现支持对FAP阳性癌症治疗的临床研究的进一步调查.
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