Blue Light-Gated Reversible Silver Nanozyme Reaction Networks that Achieve Life-like Adaptivity

Jiang, Zhengxing; Li, Hua; Deng, Yuequan; He, Yi

doi:10.1021/acssuschemeng.9b07009

Cited by 22 publications

(10 citation statements)

References 45 publications

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“…Error bars represent standard deviations ( n = 3); Table S1: Comparison of apparent Michaelis−Menten Constant ( K m ) of copper hexacyanoferrate nanoparticles for the oxidation of ABTS with other reported oxidase-like nanozymes. References [ 29 , 30 , 31 , 32 , 33 ] are cited in the Supplementary Materials.…”

mentioning

confidence: 99%

Enzyme-Regulated In Situ Formation of Copper Hexacyanoferrate Nanoparticles with Oxidase-Mimetic Behaviour for Colorimetric Detection of Ascorbate Oxidase

Zhang

Yang

et al. 2023

Biosensors

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In this study, a copper hexacyanoferrate nanoparticle with excellent oxidase-mimetic behaviour has been synthesized through a simple precipitation method. The synthesized copper hexacyanoferrate nanoparticle has intrinsic oxidase-like activity, which can catalyze the chromogenic reaction of 2,2′-azinobis-(3-ethylbenzthiazoline-6-sulphonate) through an O2•− reactive oxygen-species-participated process. On the other hand, K3[Fe(CN)6] can be reduced by ascorbic acid (AA) to produce K4[Fe(CN)6], thereby inhibiting the formation of the copper hexacyanoferrate nanoparticles. Furthermore, ascorbate oxidase (AAO) can catalyze the oxidation of AA to produce dehydroascorbic acid, which cannot reduce K3[Fe(CN)6]. Thus, a system for an AAO-regulated in situ formation of copper hexacyanoferrate nanoparticles was constructed by coupling a prepared copper hexacyanoferrate nanozyme with AA for the detection of AAO activity. This colorimetric sensing assay shows high sensitivity and selectivity for the detection of AAO activity (the limit of detection is 0.52 U/L) with a linear range of 1.1–35.7 U/L. Finally, the developed method was applied to detect the activity of AAO in normal human serum with a satisfactory sample spiked recovery (87.4–108.8%). In short, this study provides a good strategy for the construction of nanozyme-based multi-enzyme cascade-signal amplification assay.

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confidence: 99%

Enzyme-Regulated In Situ Formation of Copper Hexacyanoferrate Nanoparticles with Oxidase-Mimetic Behaviour for Colorimetric Detection of Ascorbate Oxidase

Zhang

Yang

et al. 2023

Biosensors

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“…The reason is as follows. Although the Eosin Y shows a higher photocatalytic property under neutral and alkaline conditions than that in acidic medium, the TMB is not easily oxidized when the pH of solution is more than 6 [30,31]. Accordingly, a weak acidic environment (pH 5) rather than a neutral or alkaline medium is suitable for catalytic oxidation of TMB by Eosin Y.…”

Section: Visible Light-initiated Oxidase-mimicking Activity Of Eosin Ymentioning

confidence: 99%

Eosin Y as a high-efficient photooxidase mimic for colorimetric detection of sodium azide

Wang

2020

Anal Bioanal Chem

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The reported fluorescent dye-based artificial light-responsive oxidase mimics are suffering from their low catalytic efficiency. To overcome the limitation, we report the photooxidase-mimicking activity of Eosin Y which can catalyze the oxidation of various chromogenic substrates such as 3,3′,5,5′-tetramethylbenzydine (TMB), 2,2′-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) diammonium salt (ABTS), 3,3′-diaminobenzidine (DAB), and o-phenylenediamine (OPD) by dissolved oxygen. The photooxidase-like activity of Eosin Y is highly efficient for TMB substrate, and its catalytic efficiency is higher than that of the reported fluorescein (130 fold) and 9-mesityl-10-methylacridinium ion (7.7-fold) mimetic photooxidase. Moreover, the photosensitized Eosin Y-TMB chromogenic system is utilized for colorimetric detection of highly toxic and explosive sodium azide (NaN 3 ) in a linear range from 5 to 500 μM with a limit of detection of 3.5 μM. The resulting colorimetric assay is selective and applied to determine NaN 3 in real lake water samples.

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“…To replace protein-based enzymes extracted from nature, previous studies have been conducted to replace the role of enzymes based on nonprotein-based nanoparticles (NPs), including noble metals (Au, Ag, Pt, and Pd), transition metal oxides (Fe 3 O 4 , CuS, Fe 3 S 4 , and CuZnO), and carbon nanomaterials (single-walled carbon nanotube, multiwalled carbon nanotube, and graphene) . These are called nanozymes .…”

Section: Introductionmentioning

confidence: 99%

Multibranched Au–Ag–Pt Nanoparticle as a Nanozyme for the Colorimetric Assay of Hydrogen Peroxide and Glucose

Lee

Kim

et al. 2022

ACS Omega

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Many studies have recently produced artificial enzymes with metal nanoparticles (NPs) to overcome the limitations of natural enzymes, such as low stability, high cost, and storage problems. In particular, gold NPs exhibit peroxidase-like activity and are strongly influenced by external parameters, such as pH, temperature, size, shape, and functional layer, which change the enzyme activity. Here, chitosan-capped multibranched Au−Ag−Pt NPs (CCNPs) that mimic peroxidase were synthesized using various peroxidase-mimicking strategies. The results demonstrated that enzyme activity sequentially increased because of the multibranched Au−Ag NPs coated with Pt and chitosan. The enzyme activity of the particle was evaluated through the oxidation of 3,3′,5,5′tetramethylbenzidine (TMB), which causes a color change into blue. This change was observable with the naked eye and could be used practically. The color change depended on the concentration of hydrogen peroxide (H 2 O 2 ), and it was shown that the CCNPs could be applied to measure H 2 O 2 with a limit of detection (LOD) of 0.054 mM. Furthermore, with glucose oxidase, the CCNPs can be used for glucose detection with an LOD of 0.289 mM. Also, the potential of the CCNP application in human serum was shown through the serum test. Thus, this study suggested the utilization of the multibranched Au−Ag−Pt NPs that mimic the peroxidase activity of natural enzymes and the possibility of application in various biological analyses.

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Blue Light-Gated Reversible Silver Nanozyme Reaction Networks that Achieve Life-like Adaptivity

Cited by 22 publications

References 45 publications

Enzyme-Regulated In Situ Formation of Copper Hexacyanoferrate Nanoparticles with Oxidase-Mimetic Behaviour for Colorimetric Detection of Ascorbate Oxidase

Enzyme-Regulated In Situ Formation of Copper Hexacyanoferrate Nanoparticles with Oxidase-Mimetic Behaviour for Colorimetric Detection of Ascorbate Oxidase

Eosin Y as a high-efficient photooxidase mimic for colorimetric detection of sodium azide

Multibranched Au–Ag–Pt Nanoparticle as a Nanozyme for the Colorimetric Assay of Hydrogen Peroxide and Glucose

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