用TSHR向的PET成像对差异化甲状腺癌进行[⁸⁹Zr]Zr-TR1402的成像

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Grayson R Gimblet¹, Hailey A Houson¹, Jason Whitt²

¹Department of Radiology, University of Alabama at Birmingham, Birmingham, Alabama 35294, United States.

Molecular pharmaceutics

|July 8, 2024

概括

这项研究介绍了[89Zr]Zr-TR1402,一种针对特异化甲状腺癌 (DTC) 的TSHR的新型PET放射性药物. 它在表达TSHR的DTC细胞和瘤中显示出有前途的吸收,支持其诊断和管理RAI耐火DTC的潜力.

科学领域:

核医学就是核医学.
在瘤学瘤学.
放射化学放射化学是指辐射化学.

背景情况:

差异化甲状腺癌 (DTC) 是常见的内分泌癌症,其中高达20%成为放射性耐火性 (RAI-R).
RAI-R患者面临显著降低的生存率.
对于RAI-R DTC,需要新的诊断和治疗策略.

研究的目的:

探索[89Zr]Zr-TR1402,一种新的正子发射断层扫描 (PET) 放射性药物,用于向DTC中的甲状腺刺激激素受体 (TSHR).
在DTC的临床前模型中评估[89Zr]Zr-TR1402的体外和体内性能.

主要方法:

合成[89Zr]Zr-TR1402通过将TSHR向模拟物 (TR1402) 与化剂结合并用89Zr进行放射性标记.
在TSHR表达和非表达DTC细胞系中受体介导吸收的体外评估.
在携带TSHR+和TSHR-DTC异种移植的小鼠身上进行了体内PET成像和体外生物分布研究.

主要成果:

[89Zr]Zr-TR1402在TSHR+ DTC细胞的特异性摄取量在体外与TSHR-细胞相比显著更高.
在体内PET成像显示了TSHR+瘤中[89Zr]Zr-TR1402的积累,注射后的第一天吸收量最高.
在临床前模型中,ex vivo生物分布证实了与TSHR-瘤相比,TSHR+瘤的吸收率显著更高.

结论:

在体外和体外数据支持[89Zr]Zr-TR1402作为用于DTC的TSHR向PET放射性药物的潜力.
这种方法可以为RAI耐火DTC的诊断和管理提供一个有价值的工具.
需要对[89Zr]Zr-TR1402进行进一步的临床前优化.

关键词:

在DTC中,我们可以使用DTC.在这里,PET是PET.TR1402 有关一个问题人权最高法院的人权最高法院甲状腺是什么?甲状腺是什么?

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