期刊
ANALYTICA CHIMICA ACTA
卷 786, 期 -, 页码 111-115出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.aca.2013.04.067
关键词
Glutathione reductase; Activity; Silver nanoclusters; Fluorescence; Deoxyribonucleic acid
资金
- National Natural Science Foundation of China [21175126]
- Chinese Academy of Sciences (CAS)
- Academy of Sciences for the Developing World (TWAS)
Fluorescent silver nanoclusters stabilized by DNA (DNA-AgNCs) exhibit distinct response rates to thiol and disulfide. Glutathione reductase can catalyze the reduction of the oxidized glutathione (GSSG) quickly to reduced glutathione (GSH) in the presence of beta-nicotinamide adenine dinucleotide 2'-phosphate reduced tetrasodium salt hydrate (NADPH). Consequently, DNA-AgNCs can serve as a new fluorescent platform for assaying the glutathione reductase (GR) activity. This newly proposed assay has a high sensitivity and a good selectivity toward GR. The GR activity can be detected in the range of 0.2-2.0 mU mL(-1) with a minimum detectable concentration of 0.2 mU mL(-1). Pepsin, lysozyme, trypsin, avidin, thrombin, myoglobin, and BSA have little effect on the fluorescence intensity of DNA-AgNCs. The GR activity assay is successfully used to monitor the inhibition of GR activity by a typical inhibitor 1,3-bis(2-chloroethyl)-1-nitrosourea. (C) 2013 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据