相关实验视频

Updated: May 2, 2026

Biofunctionalized Prussian Blue Nanoparticles for Multimodal Molecular Imaging Applications

Biofunctionalized Prussian Blue Nanoparticles for Multimodal Molecular Imaging Applications

Published on: April 28, 2015

用于超敏感MR分子成像的H-费里丁纳米的加多纳米颗粒

Jianlin Zhang^1,2, Chang Yuan¹, Lingfei Kong³

¹Experimental Center of Advanced Materials, School of Materials Science & Engineering, Beijing Institute of Technology, Beijing, 100081, China.

|March 20, 2024

概括

在人类H-费里纳米 (Gd-HFn) 中封装的新型加多纳米粒子显著提高了用于生物标志物跟踪的MRI灵敏度. 这种新的对比剂提供了卓越的放松性,使瘤能够精确地在体内可视化,并推进分子成像能力.

科学领域:

生物医学工程生物医学工程
纳米技术纳米技术
医疗成像医学成像

背景情况:

磁共振成像 (MRI) 提供高分辨率的形态成像,但缺乏生物标志物跟踪的灵敏度.
目前的加多 (Gd) 酸盐具有有限的放松性,阻碍了敏感的MRI诊断.
新型对比剂的开发对于提高MRI灵敏度和使分子成像成为可能至关重要.

研究的目的:

开发一种新型的对比剂,用于使用MRI进行高度敏感的体内生物标志物跟踪.
创建一个基于Gd的纳米探针,封装在人类H-费里丁纳米 (Gd-HFn) 中.

主要方法:

一个基于Gd的纳米探针 (Gd-HFn) 通过将加多纳米粒子封装在人类H-费里纳米中来合成.
在体内MRI研究在携带瘤的小鼠和缺乏非脂蛋白E的小鼠中进行,以评估Gd-HFn的特异性和敏感性.

主要成果:

在1.5-T和3.0-T磁场下,Gd-HFn表现出异常高的放松性值 (r1和r2),显著超过标准临床药物Dotarem (Gd-DOTA).
增强的放松性使得瘤受体TfR1.1的高度敏感跟踪成为可能.
在体内MRI成功地可视化了使用Gd-HFn探针接近血管性开关的瘤.

结论:

开发的Gd-HFn对比剂大大提高了MRI灵敏度和诊断能力.
Gd-HFn提供了功能和形态成像信息,为分子成像提供了新的视角.
这种新的纳米探针对推进体内诊断和生物标志物检测有前途.

关键词:

对比剂是一种对比剂.人类的H-费里丁.磁共振成像技术的使用分子成像分子成像技术关系性价值的关系性价值.

更多相关视频

Synthesis of Cationized Magnetoferritin for Ultra-fast Magnetization of Cells

Synthesis of Cationized Magnetoferritin for Ultra-fast Magnetization of Cells

Published on: December 13, 2016

Synthesis of 68Ga Core-doped Iron Oxide Nanoparticles for Dual Positron Emission Tomography /T1Magnetic Resonance Imaging

Synthesis of 68Ga Core-doped Iron Oxide Nanoparticles for Dual Positron Emission Tomography /T1Magnetic Resonance Imaging

Published on: November 20, 2018

相关概念视频

Magnetic Resonance Imaging

Magnetic Resonance Imaging

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...

Insensitive Nuclei Enhanced by Polarization Transfer (INEPT)

Insensitive Nuclei Enhanced by Polarization Transfer (INEPT)

Insensitive Nuclei Enhanced by Polarization Transfer (INEPT) is an advanced Nuclear Magnetic Resonance (NMR) technique specifically designed to detect and enhance the signals of low-abundance nuclei, such as carbon-13 and nitrogen-15, in small molecules. The fundamental principle behind INEPT is the transfer of polarization from a more abundant and highly polarizable nucleus, typically hydrogen-1, to the low-abundance nucleus of interest. This process effectively boosts the NMR signal of the...

Imaging Studies for Cardiovascular System IV: CMRI

Imaging Studies for Cardiovascular System IV: CMRI

Cardiovascular magnetic resonance imaging, or CMRI, is a non-invasive diagnostic test that employs a magnetic field and radiofrequency waves to create precise images of the heart and arteries. It provides comprehensive information about cardiac anatomy, function, perfusion, and tissue characterization without ionizing radiation.IndicationsCMRI diagnoses various heart conditions, including tissue damage from heart attacks, ischemic heart disease, myocarditis, aortic issues (tears, aneurysms,...