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Cited by 389

The DOI matches its Crossref record; 52 of the 52 references it cites were found in a registry or an index.

Activatable NIR Fluorescence/MRI Bimodal Probes for in Vivo Imaging by Enzyme-Mediated Fluorogenic Reaction and Self-Assembly

Yan, Runqi, Hu, Yuxuan, Liu, Fei, Wei, Shixuan, Fang, Daqing, Shuhendler, Adam J., Liu, Hong, Chen, Hong-Yuan, Ye, Deju·2019·Journal of the American Chemical Society

Abstract

Stimuli-responsive in situ self-assembly of small molecules to form nanostructures in living subjects has produced promising tools for molecular imaging and tissue engineering. However, controlling the self-assembly process to simultaneously activate multimodality imaging signals in a small-molecule probe is challenging. In this paper, we rationally integrate a fluorogenic reaction into enzyme-responsive in situ self-assembly to design small-molecule-based activatable near-infrared (NIR) fluorescence and magnetic resonance (MR) bimodal probes for molecular imaging. Using alkaline phosphatase (ALP) as a model target, we demonstrate that probe (P-CyFF-Gd) can be activated by endogenous ALP overexpressed on cell membranes, producing membrane-localized assembled nanoparticles (NPs) that can be directly visualized by cryo-SEM. Simultaneous enhancements in NIR fluorescence (>70-fold at 710 nm) and r 1 relaxivity (∼2.3-fold) enable real-time, high-sensitivity, high-spatial-resolution imaging and localization of the ALP activity in live tumor cells and mice. P-CyFF-Gd can also delineate orthotopic liver tumor foci, facilitating efficient real-time, image-guided surgical resection of tumor tissues in intraoperative mice. This strategy combines activatable NIR fluorescence via a fluorogenic reaction and activatable MRI via in situ self-assembly to promote ALP activity imaging, which could be applicable to design other activatable bimodal probes for in vivo imaging of enzyme activity and locations in real time.

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Metadata

Authors
Yan, R., Hu, Y., Liu, F., Wei, S., Fang, D., Shuhendler, A. J., Liu, H., Chen, H.-Y., & Ye, D.
Venue
Journal of the American Chemical Society
Published
2019-06-07
Volume
141
Issue
26
Pages
10331-10341
ISSN
  • 0002-7863 (ISSN-L)
  • 1520-5126
OpenAlex
W2949216521
Cited by
389
References
52
FWCI
18.86
Type
journal article
Language
en
Open access
closed

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CoChat. (2026). Citation check: Activatable NIR Fluorescence/MRI Bimodal Probes for in Vivo Imaging by Enzyme-Mediated Fluorogenic Reaction and Self-Assembly. https://app.cochat.ai/papers/10.1021/jacs.9b03649
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Yan, R., Hu, Y., Liu, F., Wei, S., Fang, D., Shuhendler, A. J., Liu, H., Chen, H.-Y., & Ye, D. (2019). Activatable NIR Fluorescence/MRI Bimodal Probes for in Vivo Imaging by Enzyme-Mediated Fluorogenic Reaction and Self-Assembly. Journal of the American Chemical Society. https://doi.org/10.1021/jacs.9b03649

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