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Updated: Jun 16, 2025

The Bioconjugation and Radiosynthesis of 89Zr-DFO-labeled Antibodies

The Bioconjugation and Radiosynthesis of 89Zr-DFO-labeled Antibodies

Published on: February 12, 2015

使用Zr/177标记Lu的抗体向产生红素的肝细胞A2 (EphA2) 的治疗药物

Tadashi Watabe^1,2, Takumi Iwasawa³, Hiroyuki Kimura⁴

¹Department of Radiology, Graduate School of Medicine, Osaka University, Suita, Japan. watabe.tadashi.med@osaka-u.ac.jp.

European journal of nuclear medicine and molecular imaging

|February 11, 2025

概括

这项研究表明,Zr标记的抗体可以对表达EphA2的瘤进行成像,而Lu标记的抗体有效地缩小了它们. EphA2 是癌症治疗学的一个有前途的目标.

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:

产生红素的肝细胞A2 (EphA2) 在许多癌症中过度表达,使其成为潜在的治疗点.
治疗术结合治疗和诊断,为癌症治疗提供个性化的方法.

研究的目的:

用PET成像评估Zr标记的抗EphA2抗体的诊断潜力.
在表达EphA2的瘤中评估Lu标记的抗EphA2抗体的治疗疗效.

主要方法:

89Zr和177Lu被用来标记一种抗EphA2单克隆抗体 (mAb).
在HT-1080异种移植小鼠身上使用Zr标记抗体进行了PET成像.
治疗效果和毒性在与Lu标记抗体,非放射标记抗体或对照溶液治疗的小鼠中进行了评估.

主要成果:

89 Zr标记的抗体显示高瘤积累和保留.
标记Lu的抗体显示出显著的瘤吸收和保留,导致大量的瘤生长抑制和在某些情况下的完全缓解.
在正常器官中观察到最少的吸收,毒性很低.

结论:

标有Lu标签的Zr-和177抗EphA2 mAb在表达EphA2的癌症中显示出治疗应用的希望.
对于各种癌症类型来说,EphA2 是一个可行的治疗性标.
这种双同位素方法可以实现有效的成像和向的放射性核酸治疗.

关键词:

抗体是对抗体的一种.在 EphA2 中.(177Lu) 是一种.超级神奇主义者超级神奇 (89Zr) 是一种

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