TY - JOUR
T1 - Development of a ruthenium(II) complex based luminescent probe for imaging nitric oxide production in living cells
AU - Zhang, Run
AU - Ye, Zhiqiang
AU - Wang, Guilan
AU - Zhang, Wenzhu
AU - Yuan, Jingli
PY - 2010/6/18
Y1 - 2010/6/18
N2 - A unique ruthenium(II) complex, bis(2,2′-bipyridine)(4-(3,4- diaminophenoxy)-2,2′-bipyridine) ruthenium(II) hexafluorophosphate ([(Ru(bpy)2(dabpy)][PF6]2), has been designed and synthesized as a highly sensitive and selective luminescence probe for the imaging of nitric oxide (NO) production in living cells. The complex can specifically react with NO in aqueous buffers under aerobic conditions to yield its triazole derivative with a high reaction rate constant at the 10 10 M-1S-1 level; this reaction is accompanied by a remarkable increase of the luminescence quantum yield from 0.13 to 2.2%. Compared with organic probes, the new RuII complex probe shows the advantages of a large Stokes shift (>150 nm), water solubility, and a wide pH-availability range (pH independent at pH>5). In addition, it was found that the new probe could be easily transferred into both living animal cells and plant cells by the coincubation method, whereas the triazole derivative was cell-membrane impermeable. The probe was successfully used for luminescence-imaging detection of the exogenous NO in mouse macrophage cells and endogenous NO in gardenia cells. The results demonstrated the efficacy and advantages of the new probe for NO detection in living cells.
AB - A unique ruthenium(II) complex, bis(2,2′-bipyridine)(4-(3,4- diaminophenoxy)-2,2′-bipyridine) ruthenium(II) hexafluorophosphate ([(Ru(bpy)2(dabpy)][PF6]2), has been designed and synthesized as a highly sensitive and selective luminescence probe for the imaging of nitric oxide (NO) production in living cells. The complex can specifically react with NO in aqueous buffers under aerobic conditions to yield its triazole derivative with a high reaction rate constant at the 10 10 M-1S-1 level; this reaction is accompanied by a remarkable increase of the luminescence quantum yield from 0.13 to 2.2%. Compared with organic probes, the new RuII complex probe shows the advantages of a large Stokes shift (>150 nm), water solubility, and a wide pH-availability range (pH independent at pH>5). In addition, it was found that the new probe could be easily transferred into both living animal cells and plant cells by the coincubation method, whereas the triazole derivative was cell-membrane impermeable. The probe was successfully used for luminescence-imaging detection of the exogenous NO in mouse macrophage cells and endogenous NO in gardenia cells. The results demonstrated the efficacy and advantages of the new probe for NO detection in living cells.
KW - Analytical reagents
KW - Imaging agents
KW - Luminescence nitric oxide
KW - Ruthenium
UR - http://www.scopus.com/inward/record.url?scp=77953587143&partnerID=8YFLogxK
U2 - 10.1002/chem.200903267
DO - 10.1002/chem.200903267
M3 - Article
C2 - 20458707
AN - SCOPUS:77953587143
VL - 16
SP - 6884
EP - 6891
JO - Chemistry - A European Journal
JF - Chemistry - A European Journal
SN - 0947-6539
IS - 23
ER -