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开发和临床前评估一种标有-68的新型诊断标记器,用于可视化瘤中的ALK表达

Zhen-Peng Yu¹, Ke-Xin Sun¹, Dan Zhang¹

¹Department of Nuclear Medicine, The First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, 230022, China.

European journal of pharmaceutical sciences : official journal of the European Federation for Pharmaceutical Sciences

|April 1, 2025

概括

开发了一种新的成像追踪器68Ga-DOTA-CTB,用于可视化瘤中的形淋巴瘤激酶 (ALK) 表达. 这种标记物显示出在向治疗期间监测ALK阳性癌症的前景.

科学领域:

在瘤学瘤学.
放射化学放射化学是指辐射化学.
分子成像学分子成像学

背景情况:

无细胞淋巴瘤激酶 (ALK) 是各种癌症的关键驱动因素,促进瘤生长和扩散.
利尼布是一种针对ALK阳性高级非小细胞肺癌 (NSCLC) 的向治疗方法.
监测ALK表达对于有效的向治疗至关重要.

研究的目的:

开发一种新的正子发射断层扫描/磁共振 (PET/MR) 成像追踪器,68Ga-DOTA-CTB,基于利尼布支架.
评估68Ga-DOTA-CTB在活体中监测形淋巴瘤激酶 (ALK) 表达水平方面的潜力.
评估追踪器在跟踪对基于利尼布的向治疗的反应中的实用性.

主要方法:

68Ga-DOTA-CTB辐射追踪器的合成和表征.
使用ALK阳性细胞系 (H2228) 的体外细胞吸收研究.
在瘤载体模型中进行体内成像和生物分布研究,包括阻断实验.

主要成果:

68Ga-DOTA-CTB成功合成,具有高放射性化学纯度和稳定性.
标志物在ALK阳性H2228细胞中显示出显著的积累.
在体内研究表明,特定的瘤吸收,在存在过多的未标记的利尼布显著减少,证实了目标参与.

结论:

68Ga-DOTA-CTB是一种有前途的新型PET/MR成像追踪器,用于可视化ALK表达.
追踪器有助于在瘤中非侵入性监测ALK状态.
68Ga-DOTA-CTB具有指导和评估ALK驱动恶性瘤的向治疗的潜力.

关键词:

阿尔克 (ALK) 是一个切利尼尼布 (Ceritinib) 的使用方法聚乙烯 (PET) /MR (MR) 是一种无线电追踪器是什么意思瘤成像成像瘤成像

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