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Hypoxia-Responsive Luminescent CEST MRI Agent for In Vitro and In Vivo Tumor Detection and Imaging

Karan, Sanu; Cho, Mi Young; Lee, Hyunseung; Park, Hye Sun; Han, Eun Hee; Song, Youngkyu; Lee, Youlee; ... Hong, Kwan Soo; + view all (2022) Hypoxia-Responsive Luminescent CEST MRI Agent for In Vitro and In Vivo Tumor Detection and Imaging. Journal of Medicinal Chemistry , 65 (10) pp. 7106-7117. 10.1021/acs.jmedchem.1c01745. Green open access

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Abstract

Hypoxia is a feature of most solid tumors and a key determinant of cancer growth and propagation. Sensing hypoxia effectively could lead to more favorable clinical outcomes. Here, we report a molecular antenna-based bimodal probe designed to exploit the complementary advantages of magnetic resonance (MR)- and optical-based imaging. Specifically, we describe the synthesis and evaluation of a dual-action probe (NO2-Eu) that permits hypoxia-activated chemical exchange saturation transfer (CEST) MR and optical imaging. In CT26 cells, this NO2-Eu probe not only provides an enhanced CEST MRI signal but also turns “on” the optical signal under hypoxic conditions. Time-dependent in vivo CEST imaging in a hypoxic CT26 tumor xenograft mouse model revealed probe-dependent tumor detection by CEST MRI contrast in the tumor area. We thus suggest that dual-action hypoxia probes, like that reported here, could have a role to play in solid tumor diagnosis and monitoring.

Type: Article
Title: Hypoxia-Responsive Luminescent CEST MRI Agent for In Vitro and In Vivo Tumor Detection and Imaging
Open access status: An open access version is available from UCL Discovery
DOI: 10.1021/acs.jmedchem.1c01745
Publisher version: https://doi.org/10.1021/acs.jmedchem.1c01745
Language: English
Additional information: This version is the author accepted manuscript. For information on re-use, please refer to the publisher's terms and conditions.
UCL classification: UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Computer Science
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL
URI: https://discovery.ucl.ac.uk/id/eprint/10149370
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