使用F-Radiolabeled铁氧化物微粒对炎症进行有针对性的双方式成像
Amaury Guillou1,2, Swannie Pedron2, Nancy AlHaddad1
1Normandie Université, UNICAEN, CNRS, CEA, UAR3408, Cyceron Bd Henri Becquerel, 14000 Caen, France.
ACS applied materials & interfaces
|November 10, 2025
概括
一种新的F标记试剂使双模态正子发射断层扫描 (PET) /磁共振成像 (MRI) 探针能够精确地绘制血管炎症图. 这种生物对等化学方法允许对炎症疾病进行先进的跟踪.
科学领域:
- 生物医学成像技术 生物医学成像技术
- 分子成像学分子成像学
- 纳米技术纳米技术
背景情况:
- 高分辨率的血管炎症的非侵入性映射是一个重大挑战.
- 整合PET和MRI的双模成像探头提供了一个有前途的解决方案.
研究的目的:
- 开发和评估一种新的F标记的性硫酸,用于生物直角结合.
- 创建双模式PET/MR成像探针,针对血管细胞粘附分子-1 (VCAM-1) 进行炎症检测.
主要方法:
- 设计了一种F标记的硫二甲酸,用于反向电子需求的Diels-Alder (IEDDA) 点击化学与BCN功能化的MPIO.
- 通过将追踪器与抗VCAM-1抗体涂层的MPIO结合,生成双模态PET/MR探头 (18F-MPIOs@αVCAM-1).
- 在小鼠败血症模型中利用动态免疫-PET/MR成像.
主要成果:
- 18F-反应剂与BCN显示出高水溶性,稳定性和快速反应动力学.
- 在肺部和脏中观察到特定的标志物积累,与败血症模型中的VCAM-1过度表达相关.
- 高分辨率T2*-MRI证实了探针在皮层的精确保留.
结论:
- 开发的F-sulfotetrazine是一种多功能工具,用于纳米载体的后期功能化.
- 这一战略使得创建下一代多式联络探针能够实时跟踪炎症病理.
- 双模态PET/MR方法为炎症成像提供了增强的空间和分子分辨率.
关键词:
18F-硫二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二这些MPIO都是MPIO.然后点击化学.-18 -18 -18 -18 -18 -18 -18 -18免疫-PET-MR 的使用.这是一种炎症炎症炎症炎症.更多相关视频
07:05Fluorescence-mediated Tomography for the Detection and Quantification of Macrophage-related Murine Intestinal Inflammation
Published on: December 15, 2017
8.7K
07:26Synthesis of 68Ga Core-doped Iron Oxide Nanoparticles for Dual Positron Emission Tomography /T1Magnetic Resonance Imaging
Published on: November 20, 2018
6.9K
相关概念视频
01:13Radiological Investigation III: Pulmonary Angiogram and PET Scan
722
Radiological investigations are paramount in the diagnosis and management of various pulmonary diseases. Two essential investigations are the Pulmonary Angiogram and the Positron Emission Tomography (PET) Scan.
Pulmonary Angiogram
A Pulmonary Angiogram is an invasive procedure involving injecting a contrast medium through a catheter threaded into the pulmonary artery or the right side of the heart to visualize the pulmonary vasculature. Computed Tomography (CT) scans have mainly replaced this...
Pulmonary Angiogram
A Pulmonary Angiogram is an invasive procedure involving injecting a contrast medium through a catheter threaded into the pulmonary artery or the right side of the heart to visualize the pulmonary vasculature. Computed Tomography (CT) scans have mainly replaced this...
722
01:25Imaging 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