On the use of L-012, a luminol-based chemiluminescent probe, for detecting superoxide and identifying inhibitors of NADPH oxidase: a reevaluation.

On the use of L-012, a luminol-based chemiluminescent probe, for detecting superoxide and identifying inhibitors of NADPH oxidase: a reevaluation.
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DOI:
10.1016/j.freeradbiomed.2013.09.017
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发表时间:
2013-12
影响因子:
7.4
通讯作者:
Kalyanaraman, Balaraman
Kalyanaraman, Balaraman
中科院分区:
医学1区
文献类型:
--
作者:
Zielonka, Jacek;Lambeth, J. David;Kalyanaraman, Balaraman

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L-012是一种基于鲁米诺的荧光(CL)探针,广泛用于体外和体内检测NADPH氧化酶(Nox)衍生的超氧化物(O2·−)和识别Nox抑制剂。然而,对L-012探针的自由基化学的理解仍然缺乏。我们报告,过氧化物酶和H2 O2诱导超氧化物歧化酶(SOD)敏感,L-012衍生CL在氧气的存在下。O2·−单独不与L-012反应而发光。L-012和鲁米诺类似物氧化过程中自生的O2·−人工诱导可被SOD降解的CL。这些方面使得基于鲁米诺类似物的测定对于特异性检测和鉴定O2·-和NOX抑制剂来说并不理想。
L-012, a luminol-based chemiluminescent (CL) probe, is widely used in vitro and in vivo to detect NADPH oxidase (Nox)-derived superoxide (O2·−) and identify Nox inhibitors. Yet understanding of the free radical chemistry of L-012 probe is still lacking. We report that peroxidase and H2O2 induce superoxide dismutase (SOD)-sensitive, L-012-derived CL in the presence of oxygen. O2·− alone does not react with L-012 to emit luminescence. Self-generated O2·− during oxidation of L-012 and luminol-analogs artifactually induce CL inhibitable by SOD. These aspects make assays based on luminol analogs less than ideal for specific detection and identification of O2·− and NOX inhibitors.
DOI: 10.1016/j.freeradbiomed.2009.06.013
发表时间: 2009-09-15
影响因子: 7.4
作者:
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发表时间: 1990-01-01
期刊: JOURNAL OF BIOLUMINESCENCE AND CHEMILUMINESCENCE
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