优化抗体PET成像:对纳米体和迷你体类PET标记物的比较临床前分析
Katty Zeven1, Herlinde Dierick1,2, Matthijs Sevenois1
1Molecular Imaging and Therapy Research Group (MITH), Vrije Universiteit Brussel, Brussels, Belgium.
European journal of nuclear medicine and molecular imaging
|March 30, 2025
概括
这项研究比较了 minabody 和 nanobody 格式用于正电子发射断层扫描 (PET) 成像. 与矿体相比,纳米体格式显示出优越的特异性和瘤成像,特别是与铜-64.4相比.
科学领域:
- 放射性药物化学 放射性药物化学
- 分子成像学分子成像学
- 在瘤学瘤学.
背景情况:
- pozitron发射断层扫描 (PET) 对于非侵入性医学成像非常重要.
- 抗体形式的放射追踪物,如微体和纳米体,增强了诊断能力.
- 缺少用于PET成像的微体和纳米体格式的直接比较.
研究的目的:
- 为了与其纳米体对应物比较一个新型的Minabody (与CH3域融合的纳米体).
- 用各种PET放射性核素在体外和体内评估它们的性能.
- 评估它们作为TIGIT准无线电追踪器的潜力.
主要方法:
- 一个人类的TIGIT准纳米体被重新格式化成一个地雷体.
- 在体外比较结合亲和力,特异性和稳定性.
- 使用64Cu,68Ga或18F标记的格式,对表达TIGIT的瘤进行体内PET/CT成像.
主要成果:
- 矿体表现出比纳米体更高的结合亲和力.
- 尽管亲和力较低,但纳米体格式产生了更高的特异性和更好的瘤成像.
- 与68Ga和18F相比,铜-64标记的纳米体提供了优越的瘤吸收和对比.
结论:
- 这是PET成像中微体和纳米体格式的首次对比.
- 纳米体格式在TIGIT成像中表现出卓越的性能.
- 最佳的PET成像质量取决于准矢量格式和所选择的放射性核素.
更多相关视频
08:09Validation of Nanobody and Antibody Based In Vivo Tumor Xenograft NIRF-imaging Experiments in Mice Using Ex Vivo Flow Cytometry and Microscopy
Published on: April 6, 2015
12.0K
07:36Analyzing Tumor and Tissue Distribution of Target Antigen Specific Therapeutic Antibody
Published on: May 16, 2020
4.9K
相关概念视频
Positron Emission Tomography
6.2K
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...
6.2K
Imaging Studies II: Positron Emission Tomography and Scintigraphy
853
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
853
