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合成,临床前评估和首次对人体PET研究[68Ga]-标记双含PSMA标记剂

Yimin Chen¹, Xiaojun Zhang², Ming Ni³

¹Key Laboratory of Radiopharmaceuticals, Ministry of Education, College of Chemistry, Beijing Normal University, Beijing 100875, China.

Journal of medicinal chemistry

|September 14, 2023

概括

一种新的前列腺特异性膜抗原 (PSMA) PET 追踪器,[68Ga]Ga-PSMA-D5,表明改善了瘤向和前列腺癌 (PCa) 诊断的检测. 它的简单合成和对神经学应用的潜力使其成为一个有前途的工具.

科学领域:

核医学是一种核医学.
放射化学放射化学是指辐射化学.
在瘤学瘤学.

背景情况:

前列腺特异性膜抗原 (PSMA) PET 标记物对于前列腺癌 (PCa) 诊断至关重要.
提高标记器亲和度和瘤向性对于提高诊断准确度至关重要.

研究的目的:

开发具有增强亲和力和瘤向能力的新型PSMA追踪剂.
为了研究基于双的PSMA标记物的结构-活性关系.

主要方法:

使用双基支架设计和合成新型PSMA标记剂.
在带有22Rv1瘤的小鼠中使用PET成像进行临床前评估.
这是首次对人类进行诊断性能评估的研究.

主要成果:

[68Ga]Ga-PSMA-D5在临床前研究中显示,与[68Ga]Ga-PSMA-11相比,瘤吸收率更高,脏吸收率更低.
标记器成功检测到小PCa病变和远程转移在人类受试者.
展示了简单的合成和标签程序.

结论:

[68Ga]Ga-PSMA-D5是一种有前途的PSMA PET追踪器,具有卓越的瘤向和PCa的诊断能力.
标记器的DOTA合剂可用于潜在的治疗应用,包括向的放射性连接体疗法.

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