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肿瘤靶向性造影剂的研究进展

Process in targeted contrast agents for cancer imaging

  • 摘要: 在临床广泛使用的肿瘤影像技术包括X射线计算机断层扫描、核素成像、磁共振成像和近红外荧光成像。在成像过程中,造影剂能够增强信号对比度,从而提高检测的灵敏度和准确性。但是,目前绝大部分造影剂存在半衰期短和对肿瘤没有选择性的缺陷,不利于肿瘤的诊断。因此,开发具有肿瘤靶向性的造影剂成为研究的热点之一。根据目前肿瘤靶向性造影剂的研究策略,本文综述了被动靶向、主动靶向和可激活靶向性造影剂在不同医学影像技术中的应用和研究进展,并对其未来的发展进行了展望。

     

    Abstract: The application of medical imaging technology is playing an important role in diagnosis and treatment of cancer. In clinic, the most commonly used imaging technology to detect cancers are X-ray computed tomography, nuclide imaging, magnetic resonance imaging and near-infrared fluorescence imaging. Contrast agents could enhance imaging signals and increase the sensitivity and accuracy of cancer detection. Neverthness, most of clinically used contrast agents have problems such as short retention time and tumor targeting insufficient, which is not favorable to cancer detecting. So it is of great significance to develop tumor targeting contrast agents. Currently, targeting strategies are divided into three types: passive targeting, active targeting and activatable targeting. In this review, we conclude the recent progress and applications of tumor targeting contrast agents of different imaging modilities. Besides, the future development of tumor targeting contrast agents is also prospected.

     

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