合成和临床前评估基于酸滴度剂的PET痕迹剂,用于成像瘤中的VEGFR-2表达
He Wenjun1, Chen Xueyao2, Cai Qijun1
1Department of Nuclear Medicine and PET/CT-MRI Center, The First Affiliated Hospital of Jinan University, Guangzhou, China.
Journal of labelled compounds & radiopharmaceuticals
|March 20, 2025
概括
研究人员开发了针对血管内皮细胞生长因子受体2 (VEGFR-2) 的新型正子发射断层扫描 (PET) 标记器. 标记物[64Cu]VEGF2215显示出高瘤吸收和特异性,显示出对成像VEGFR-2-阳性瘤的前景.
科学领域:
- 核医学是一种核医学.
- 分子成像学分子成像学
- 在瘤学瘤学.
背景情况:
- 血管内皮生长因子A (VEGF-A) /VEGF受体2 (VEGFR-2) 途径对血管生成至关重要.
- 现有的VEGFR-2向正子发射断层扫描 (PET) 标记剂需要提高亲和力和体内稳定性.
研究的目的:
- 开发和评估具有优化的药理动力学特性的 Cu 标记的 VEGFR-2 向的新型 PET 二次标记剂.
- 评估这些标记物的临床前疗效,用于成像VEGFR-2-阳性瘤.
主要方法:
- 合成了两种新的 Cu 标记的 VEGFR-2 向的 PET 二次标记物,VEGF 2215 (线性链接) 和 VEGF 2216 (分支链接).
- 在体外评估U87MG细胞中对VEGFR-2的标记器亲和力.
- 在瘤载体模型中使用PET/CT成像,阻断和生物分布研究进行体内临床前评估.
主要成果:
- 这两种标记剂都实现了>95%的放射化学产量和高VEGFR-2亲和力.
- [64Cu]VEGF2215显示显著的依赖时间的瘤积累 (24小时内4.95±1.26%ID/g) 和VEGFR-2特异性.
- [64Cu]VEGF2216表现出较低的瘤吸收率 (3.07 ± 0.35 %ID/g).
- [64Cu]VEGF2215被证明可以从正常器官迅速清除.
结论:
- [64Cu]VEGF2215是一种基于线性的新型PET追踪剂,对VEGFR-2向成像具有有利的特性.
- 它的高效合成,高瘤吸收率和特异性使其成为对VEGFR-2-阳性瘤PET成像的有希望的候选人.
相关概念视频
Imaging Studies II: Positron Emission Tomography and Scintigraphy
63
Positron Emission Tomography (PET) is a medical imaging technique that provides crucial insights into the body's physiological functions at a molecular level. It is an indispensable resource for diagnosing, staging, and monitoring various illnesses, notably cancer, neurological disorders, and cardiovascular conditions.
Fundamental Principles of PET
Fundamental Principles of PET
63
Positron Emission Tomography
3.9K
Positron emission tomography (PET) is a medical imaging technique involving radiopharmaceuticals — substances that emit short-lived radiation. Although the first PET scanner was introduced in 1961, it took 15 more years before radiopharmaceuticals were combined with the technique and revolutionized its potential.
One of the main requirements of a PET scan is a positron-emitting radioisotope, which is produced in a cyclotron and then attached to a substance used by the part of the body...
One of the main requirements of a PET scan is a positron-emitting radioisotope, which is produced in a cyclotron and then attached to a substance used by the part of the body...
3.9K


![Microwave-assisted One-pot Synthesis of N-succinimidyl-4-[18F]fluorobenzoate [18F]SFB](/_next/image?url=https%3A%2F%2Fcloudfront.jove.com%2FCDNSource%2Fteasers%2F2755.jpg&w=3840&q=50)