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Yu L, Zhang K, Zhang Y, Wang X, Dong P, Ge Y, Ni G, Liu Z, Zhang Y. A dual-targeted Gd-based contrast agent for magnetic resonance imaging in tumor diagnosis. J Mater Chem B 2024; 12:2486-2493. [PMID: 38372696 DOI: 10.1039/d3tb02917d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/20/2024]
Abstract
Enhanced magnetic resonance imaging (MRI) has important clinical value in the diagnosis of tumors. Much effort has been made to improve the relaxivity and specificity of contrast agents (CAs) in tumor diagnosis over the past few decades. However, there is still a lack of CAs which not only enhance the signal intensity of tumors rather than surrounding tissues in MRI but also maintain a high signal intensity prolonged for a long time. Herein, we synthesized a dual-targeted CA, RGD-(DOTA-Gd)-TPP (RDP), in which RGD is used to target the αvβ3 integrin receptor overexpressed in tumor cells and TPP is used to bind to a mitochondrion further. The structure of RDP was characterized and its properties, such as relaxivity and biosafety, were measured and in vitro and in vivo MRI assays were carried out. It has been proven that RDP has higher relaxivity of aqueous solution than Magnevist used in clinics. Moreover, RDP achieved higher signal intensity and a longer signal duration in tumor imaging. Therefore, RDP can be applied as the potential dual-targeted MRI CA for clinical tumor diagnosis.
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Affiliation(s)
- Lin Yu
- School of Medical Imaging, Shandong Second Medical University, Weifang, 261053, China.
| | - Kaiqi Zhang
- School of Medical Imaging, Shandong Second Medical University, Weifang, 261053, China.
| | - Yiyao Zhang
- School of Medical Imaging, Shandong Second Medical University, Weifang, 261053, China.
| | - Xun Wang
- School of Pharmacy, Shandong Second Medical University, Weifang, 261053, China.
| | - Peng Dong
- School of Medical Imaging, Shandong Second Medical University, Weifang, 261053, China.
| | - Yanming Ge
- School of Medical Imaging, Shandong Second Medical University, Weifang, 261053, China.
| | - Guangmao Ni
- School of Medical Imaging, Shandong Second Medical University, Weifang, 261053, China.
| | - Zan Liu
- School of Pharmacy, Shandong Second Medical University, Weifang, 261053, China.
| | - Yanhui Zhang
- School of Medical Imaging, Shandong Second Medical University, Weifang, 261053, China.
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