Volume 58, Issue 7 pp. 2050-2054
Communication

Precise In Vivo Inflammation Imaging Using In Situ Responsive Cross-linking of Glutathione-Modified Ultra-Small NIR-II Lanthanide Nanoparticles

Mengyao Zhao

Mengyao Zhao

Department of Chemistry, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, State Key Laboratory of Molecular Engineering of Polymers and iChem, Fudan University, Shanghai, 200433 P. R. China

These authors contributed equally to this work.

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Dr. Rui Wang

Dr. Rui Wang

Department of Chemistry, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, State Key Laboratory of Molecular Engineering of Polymers and iChem, Fudan University, Shanghai, 200433 P. R. China

These authors contributed equally to this work.

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Benhao Li

Benhao Li

Department of Chemistry, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, State Key Laboratory of Molecular Engineering of Polymers and iChem, Fudan University, Shanghai, 200433 P. R. China

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Yong Fan

Yong Fan

Department of Chemistry, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, State Key Laboratory of Molecular Engineering of Polymers and iChem, Fudan University, Shanghai, 200433 P. R. China

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Yifan Wu

Yifan Wu

Department of Chemistry, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, State Key Laboratory of Molecular Engineering of Polymers and iChem, Fudan University, Shanghai, 200433 P. R. China

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Xinyan Zhu

Xinyan Zhu

Department of Chemistry, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, State Key Laboratory of Molecular Engineering of Polymers and iChem, Fudan University, Shanghai, 200433 P. R. China

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Prof. Fan Zhang

Corresponding Author

Prof. Fan Zhang

Department of Chemistry, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, State Key Laboratory of Molecular Engineering of Polymers and iChem, Fudan University, Shanghai, 200433 P. R. China

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First published: 27 December 2018
Citations: 151

Graphical Abstract

Ray of light: An in vivo, reactive oxygen species (ROS)-responsive, cross-linking strategy was developed utilizing glutathione-modified, sub-10 nm, ultra-small nanoprobes to improve NIR-II bioimaging and excretion properties.

Abstract

To improve the bioimaging signal-to-noise ratio (SNR), long-term imaging capability, and decrease the potential biotoxicity, an in vivo cross-linking strategy was developed by using sub-10 nm, glutathione-modified, lanthanide nanoprobes. After administration, the nanoprobes cross-link in response to reactive oxygen species (ROS) at the inflamed area and enable the quick imaging of ROS in the second near-infrared (NIR-II) window. These nanoprobes could be rapidly excreted due to their ultra-small size. This strategy may also be applied to other ultra-small contrast agents for the precise bioimaging by in situ lesion cross-linking.

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