2020
DOI: 10.1021/acs.analchem.0c00526
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Monitoring Neuroinflammation with an HOCl-Activatable and Blood–Brain Barrier Permeable Upconversion Nanoprobe

Abstract: A reliable tool for real-time tracking the neuroinflammatory progress is highly desired for interpretation and treatment of neurological disorders. Herein, a blood–brain barrier (BBB) permeable and HOCl-activatable upconversion (UC) nanoprobe with NIR emission was designed for visual study on neuroinflammation (NI) in vivo. This UC probe consists of three parts: upconversion nanoparticles (UCNPs) as signal reporter, the Cy-HOCl dye acting as energy acceptor of UCNPs as well as the recognition unit of HOCl, and… Show more

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Cited by 38 publications
(23 citation statements)
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“…In addition to monitoring neural activity, rare-earth based nanoparticles can also be used to prepare fluorescent probes for detecting the brain diseases. Liu et al designed HOCl-activated upconversion nanoprobes for visualizing neuroinflammation in vivo 94 . Neuroinflammation is induced by activated microglia and astrocytes, accompanied by a substantial production of HOCl 95 .…”
Section: Rare-earth Based Materials For Early Brain Diseases Monitori...mentioning
confidence: 99%
“…In addition to monitoring neural activity, rare-earth based nanoparticles can also be used to prepare fluorescent probes for detecting the brain diseases. Liu et al designed HOCl-activated upconversion nanoprobes for visualizing neuroinflammation in vivo 94 . Neuroinflammation is induced by activated microglia and astrocytes, accompanied by a substantial production of HOCl 95 .…”
Section: Rare-earth Based Materials For Early Brain Diseases Monitori...mentioning
confidence: 99%
“…Through MR imaging at 7 T, the noninvasive visual monitoring of cerebral inflammation after ischemic stroke was achieved (Saleh et al, 2004 ). Moreover, Zhang et al ( 2020 ) designed a blood-brain barrier (BBB) permeable and HOCl-activatable upconversion (UC) nanoprobe with NIR emission for the visual study of neuroinflammation (NI) in vivo ( Figure 3A ). Upon intravenous injection into mice, the probe crossed the BBB via low-density lipoprotein receptor related protein (LRP) mediated transcytosis and was then lightened up by overproduced HOCl in an NI process.…”
Section: Nanomaterials-based Diagnosismentioning
confidence: 99%
“…data via ultrasonic backscattering to a subcranial receiving device. [520] Beside pure electrical signals recording, neurotransmission also involves electrochemical signal transduction so brain sensing platforms must extend their application to the monitoring of these processes that are conventionally mediated by excitatory or inhibitory neurotransmitters such as glutamate (Glu) and gamma-aminobutyric acid (GABA), confined to the synaptic cleft 460 . [523] However, other neuromodulators such as DA or 5-HT has influence also outside this zone, enabling volume neurotransmission thus influencing multiple cells on a larger area.…”
Section: Electroconductive Platforms To Monitor the Brain Communication Mechanism: Organic Materials Revealing Electrical To Electrochemimentioning
confidence: 99%
“…A successful approach relies on the use of nanosized structures and nanoscale platforms such as NPs as drug transporters, since these have been proved to mediate across the barrier the transport of enzymes and other relevant high molecular weight molecules. [459,460] In this context, amphiphilic polymers, used as coating materials, have endowed permeability and biocompatibility to nanoprobes that thanks to up-conversion nanoparticles and Cy-HOCL dye respond with light emission to HOCL overproduction upon neuroinflammation. [461] However, even if successful strategies allow to cross the barrier, screening of transferred drugs and molecules is still an essential but open challenge, so that different approaches have been used to replicate in vitro the BBB, developing static and dynamic platforms replicating the biological environment to investigate the complex molecular mechanisms regulating the CNS.…”
Section: Blood Brain Barriermentioning
confidence: 99%