Journal
ACS SENSORS
Volume 6, Issue 9, Pages 3253-3261Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acssensors.1c00930
Keywords
hypochlorous acid; fluorescence probe; dual excitation and dual emission; neuroinflammation; maternal immune activation
Funding
- Global Research Laboratory Program [NRF2014K1A1A2064569]
- Ministry of Science and Basic Science Research Program [NRF2019R1A2C2085438]
- Ministry of Education, Korea
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Fluorescent probes with practicality are crucial for investigating ROS-associated neurological disorders, such as neuroinflammation and MIA in mice models. This study found that the level of hypochlorous acid in the brain tissues of neuroinflammatory and MIA model mice was significantly higher compared to normal brain tissue.
Reactive oxygen species (ROS) produced by an inflammatory response in the brain are associated with various neurological disorders. To investigate ROS-associated neurointlammatory diseases, fluorescent probes with practicality are in demand. We have investigated hypochlorous acid, an important ROS, in the brain tissues of neuroinflammation and maternal immune activation (MIA) model mice, using a new fluorescent probe. The probe has outstanding features over many known probes, such as providing two bright ratio signals in cells and tissues in deep-red/near-infrared wavelength regions with a large spectral separation, in addition to being strongly fluorescent, photo- and chemo-stable, highly selective and sensitive, fast responding, and biocompatible. We have found that the level of hypochlorous acid in the brain tissue of a neuroinflammatory mouse model was higher (2.7-4.0-fold) compared with that in normal brain tissue. Furthermore, the level of hypochlorous acid in the brain tissue of a MIA mouse model was higher (1.2-1.3-fold) compared with that in the normal brain tissue. The robust probe provides a practical tool for studying ROS-associated neurological disorders.
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