合成和临床前评估的双模式光18F-PET标记物准PSMA
Jerome Lozada1, Helen Merkens2, Juliette Froelich1
1Department of Chemistry, UBC, 2036 Main Mall, Vancouver, BC V6T 1Z1, Canada.
Journal of medicinal chemistry
|July 30, 2025
概括
研究人员开发了针对前列腺癌的新型双模式PET标记剂,将正子发射断层扫描 (PET) 成像与光可视化相结合. 这些药物向前列腺特异性膜抗原 (PSMA),并显示高瘤吸收率,有助于手术精度.
科学领域:
- 在瘤学瘤学.
- 放射化学 放射化学是指辐射化学.
- 医疗成像医学成像
背景情况:
- 前列腺癌成像需要精确的术前和术后工具.
- 目前的方法缺乏综合性外科指导的双模式功能.
研究的目的:
- 开发和评估前列腺癌的新型双模式正子发射断层扫描 (PET) 标记器.
- 为了创建将PET成像与光可视化相结合的药物,用于手术应用.
主要方法:
- 合成了两种PET标记剂,其中包括用于放射性化的有机三甲酸,用于光的光素部分 (FAM,FITC) 和针对PSMA的药.
- 在LNCaP和22Rv1异种移植中评估了用于瘤吸收和光检测的标记物.
- 评估的放射性化产量和摩尔活性 (Am) 值.
主要成果:
- 实现了一步放射性化,产量高,分子活性高 (42-167 GBq/μmol).
- 在异种移植中显示出高瘤吸收率 (7-17% ID/g).
- 在细胞培养和ex vivo中确认了强烈的光可视化.
结论:
- 开发了第一个用光素和-18.8标记的双模式PSMA向剂.
- 这些标记物显示出对PET成像,手术导航,光引导手术 (FGS) 和射线引导手术 (RGS) 的巨大潜力.
相关概念视频
Positron Emission Tomography
5.7K
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...
5.7K
Imaging Studies II: Positron Emission Tomography and Scintigraphy
235
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
235

![Automated Radiochemical Synthesis of [18F]3F4AP: A Novel PET Tracer for Imaging Demyelinating Diseases](/_next/image?url=https%3A%2F%2Fcloudfront.jove.com%2FCDNSource%2Fteasers%2F55537.jpg&w=3840&q=50)
