Journal
MATERIALS TODAY
Volume 20, Issue 9, Pages 493-500Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.mattod.2017.09.003
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Funding
- National Natural Science Foundation of China [81471774]
- Research Foundation of Third Military Medical University [2014XJY04]
- Graduate Student Research Innovation Project of Chongqing
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We report the synthesis and characterization of a myeloperoxidase (MPO)-responsive, biodegradable, and luminescent material derived from functionalized cyclodextrin. The nanoparticle based on this functional material shows notably high and sustainable luminescent signals upon triggering by inflammatory conditions with abnormally elevated reactive oxygen species and MPO. Activated neutrophils during inflammatory responses can be selectively imaged using this nanoprobe, with luminescent signals positively correlated to neutrophil counts. This nanoprobe enables in vivo precise quantification and tracking of the number and dynamics of neutrophils in both superficial and deep tissues in various mouse models of inflammatory diseases, including peritonitis, paw edema, colitis, and acute lung injury. In vitro and in vivo evaluations also demonstrate the safety and biocompatibility of this newly engineered material in its native and nanoparticle forms.
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