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Article Abstract
Hydrogen peroxide (HO) is important in the regulation of a variety of biological processes and is involved in various diseases. Quantitative measurement of HO levels at the subcellular level is important for understanding its positive and negative effects on biological processes. Herein, a two-photon ratiometric fluorescent probe (SHP-Cyto) with a boronate-based carbamate leaving group as the HO reactive trigger and 6-(benzo[]thiazol-2'-yl)-2-(,-dimethylamino) naphthalene (BTDAN) as the fluorophore was synthesized and examined for its ability to detect cytosolic HO in situ. This probe, based on the specific reaction between boronate and HO, displayed a fluorescent color change (455 to 528 nm) in response to HO in the presence of diverse reactive oxygen species in a physiological medium. In addition, ratiometric two-photon microscopy (TPM) images with SHP-Cyto revealed that HO levels gradually increased from brain to kidney, skin, heart, lung, and then liver tissues. SHP-Cyto was successfully applied to the imaging of endogenously produced cytosolic HO levels in live cells and various rat organs by using TPM.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5754560 | PMC |
| http://dx.doi.org/10.1002/open.201700155 | DOI Listing |
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