针对EGFR的加多对比剂用于瘤增强分子磁共振成像

针对EGFR的加多对比剂用于瘤增强分子磁共振成像

相关实验视频

Updated: Jan 9, 2026

MR Molecular Imaging of Prostate Cancer with a Small Molecular CLT1 Peptide Targeted Contrast Agent

06:54

MR Molecular Imaging of Prostate Cancer with a Small Molecular CLT1 Peptide Targeted Contrast Agent

Published on: September 3, 2013

11.7K

Mengyao Chen¹, Jing Chen¹, Xue Ren¹

¹Department of Colorectal and Anal Surgery, Zhongnan Hospital of Wuhan University, School of Pharmaceutical Sciences, Wuhan University, Wuhan, China; Key Laboratory of Combinatorial Biosynthesis and Drug Discovery, Ministry of Education, Wuhan University, Wuhan, China.

The Journal of biological chemistry

|December 1, 2025

概括

新型向磁共振成像 (MRI) 对比剂是使用加多 (Gd) 与表皮生长因子受体 (EGFR) 结合 (EBPs) 结合的新型向磁共振成像 (MRI) 对比剂. 这些药物在检测EGFR过度表达瘤方面表现出增强的特异性和敏感性.

科学领域:

生物医学成像技术生物医学成像技术
纳米技术纳米技术
在瘤学瘤学.

背景情况:

磁共振成像 (MRI) 对于瘤诊断至关重要.
目前基于加多 (Gd) 的对比剂缺乏针对性瘤检测的最佳灵敏度和特异性.
表皮生长因子受体 (EGFR) 的过度表达在各种癌症中很常见.

研究的目的:

开发新的向MRI对比剂,用于增强检测EGFR过度表达的瘤.
合成和描述与EGFR结合 (EBP) 结合的基于加多的对比剂.
评估这些新型药物的特异性和敏感性在体外和体内.

主要方法:

合成EBP-Gd-DO3A和EBP-(Gd-DO3A) 3结合物的合成.
细胞结合测试和光显微镜以评估结合亲和力和特异性.
竞争性约束性测试以确认EGFR介导的向.
在EGFR阳性细胞的体外MRI和在异种移植瘤模型的体内MRI.

主要成果:

合成的EBP-Gd合物显示出对EGFR阳性细胞的高结合亲和力和特异性.
在体外MRI显示EGFR过度表达瘤细胞显著增强对比.
在体内研究表明,在异种移植模型中,瘤吸收增加和对比度保留时间延长.
与非向性Gd-DO3A.相比,这些向性药物表现出更高的特异性和敏感性.

结论:

针对EGFR的新型基于Gd的对比剂为MRI提供了更好的特异性和灵敏性.
这些药物有望在临床分子成像中提高瘤检测,分级和预后.
向分子成像剂代表了癌症诊断的重大进步.

关键词:

在 Gd 酸盐中.皮肤上生长因子受体.这是一种类.准对比剂准对比剂是一种对比剂.

更多相关视频

Preparation and In Vitro Characterization of Dendrimer-based Contrast Agents for Magnetic Resonance Imaging

11:27

Preparation and In Vitro Characterization of Dendrimer-based Contrast Agents for Magnetic Resonance Imaging

Published on: December 4, 2016

10.5K

Biofunctionalized Prussian Blue Nanoparticles for Multimodal Molecular Imaging Applications

11:28

Biofunctionalized Prussian Blue Nanoparticles for Multimodal Molecular Imaging Applications

Published on: April 28, 2015

10.8K

相关概念视频

01:24

Magnetic Resonance Imaging

8.9K

Magnetic resonance imaging (MRI) is a noninvasive medical imaging technique based on a phenomenon of nuclear physics discovered in the 1930s, in which matter exposed to magnetic fields and radio waves was found to emit radio signals. In 1970, a physician and researcher named Raymond Damadian noticed that malignant (cancerous) tissue gave off different signals than normal body tissue. He applied for a patent for the first MRI scanning device in clinical use by the early 1980s. The early MRI...

8.9K

01:14

Imaging Studies I: CT and MRI

763

Introduction: MRI and CT scans are crucial advancements in medical imaging techniques, playing a vital role in diagnosing conditions related to the gastrointestinal (GI) system. Each scan serves distinct purposes, targets specific areas, and requires unique nursing duties.
Description of the Procedures
Computed Tomography (CT) scan:
Computed Tomography (CT) scans use X-ray technology to generate detailed images of bones, organs, and tissues. During the scan, the patient lies on a moving table...