2014
DOI: 10.1021/ja500315x
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A Fast and Selective Near-Infrared Fluorescent Sensor for Multicolor Imaging of Biological Nitroxyl (HNO)

Abstract: The first near-infrared fluorescent turn-on sensor for the detection of nitroxyl (HNO), the one-electron reduced form of nitric oxide (NO), is reported. The new copper-based probe, CuDHX1, contains a dihydroxanthene (DHX) fluorophore and a cyclam derivative as a Cu(II) binding site. Upon reaction with HNO, CuDHX1 displays a five-fold fluorescence turn-on in cuvettes and is selective for HNO over thiols and reactive nitrogen and oxygen species. CuDHX1 can detect exogenously applied HNO in live mammalian cells a… Show more

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Cited by 203 publications
(127 citation statements)
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“…The integration of multiresponse to multi-species by a single probe can demonstrate the redox homeostasis process more clearly. [32][33][34][35][36][37][38][39] Moreover, the multiresponse probes can benefit from inaccurate calibration. And they can also avoid potobleaching rates of individual probes, uneven probe loading, nonhomogeneous distribution uncontrollable localization, larger invasive effects, metabolisms, and interference of spectral overlap.…”
Section: Introductionmentioning
confidence: 99%
“…The integration of multiresponse to multi-species by a single probe can demonstrate the redox homeostasis process more clearly. [32][33][34][35][36][37][38][39] Moreover, the multiresponse probes can benefit from inaccurate calibration. And they can also avoid potobleaching rates of individual probes, uneven probe loading, nonhomogeneous distribution uncontrollable localization, larger invasive effects, metabolisms, and interference of spectral overlap.…”
Section: Introductionmentioning
confidence: 99%
“…Because of their protonation property at physiological conditions, macrocyclic polyamines often act as positive-charged units in constructing DNA condensation agents and non-viral gene vectors [5][6][7][8]. As a binding unit, macrocyclic polyamines have been frequently applied in the development of artificial nucleases [9][10][11][12] and a number of chemical sensors to monitor biologically-and environmentally-relevant metal and anion ions [13][14][15][16]. Our group has recently focused on the design and synthesis of various macrocyclic polyamine [12]aneN 3 compounds and their applications in artificial nucleases, DNA condensation agents, non-viral gene vectors, and chemical sensors [17][18][19][20][21].…”
Section: Introductionmentioning
confidence: 99%
“…11 Understanding the role of small molecules such as NO and HNO in biological signal transduction has resulted in important advances in medicine. 12,13 To shed light on the role of HSNO in vivo, sensors are currently being developed to image this elusive molecule. However, the biochemistry (formation, transport, decomposition) of HSNO remains poorly understood and the structure of the molecule has not been determined to date.…”
mentioning
confidence: 99%