Gadolinium(III)-based Polymeric Magnetic Resonance Imaging Agents for Tumor Imaging

Author(s): Guangyue Zu, Ye Kuang, Jingjin Dong, Yi Cao, Tingting Zhang, Min Liu*, Liqiang Luo*, Renjun Pei*.

Journal Name: Current Medicinal Chemistry

Volume 25 , Issue 25 , 2018

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Contrast agents (CAs) are widely used to improve the signal-noise ratio in the magnetic resonance imaging (MRI) examinations. The majority of MRI CAs used in clinic are gadolinium( III) (Gd(III)) chelates with low molecular weight. Compared with these small-molecule CAs, Gd(III)-based polymeric magnetic resonance imaging agents (i.e. macromolecular contrast agents, mCAs), prepared by conjugating small-molecule Gd(III) chelates onto macromolecules, possess high relaxivity and relative long blood circulation time, which are favorable for MRI examinations. In last decades, increasing attention was paid to the design of mCAs with various structures, and further evaluation of the MRI performance both in vitro and in vivo. Herein, we focus on the recent progress of mCAs, including structures, properties and applications. Meanwhile, this review also highlights the emerging MRI mCAs with smart response and multi-function: tumor microenvironment- stimulated MRI, multi-mode imaging and MRI-based theranostics.

Keywords: Magnetic resonance imaging, gadolinium(III)-based polymeric contrast agents, stimuli-responsive, multi-mode imaging, theranostics, tumor imaging.

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Article Details

Year: 2018
Page: [2910 - 2937]
Pages: 28
DOI: 10.2174/0929867324666170314121946
Price: $58

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