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Xue Y, Liu K, Gao M, Zhang T, Wang L, Cui Y, Ji X, Ma G, Hu J. Vancomycin-Stabilized Platinum Nanoparticles with Oxidase-like Activity for Sensitive Dopamine Detection. Biomolecules 2023; 13:1312. [PMID: 37759712 PMCID: PMC10527023 DOI: 10.3390/biom13091312] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2023] [Revised: 08/17/2023] [Accepted: 08/22/2023] [Indexed: 09/29/2023] Open
Abstract
The development of efficient, reliable, and sensitive dopamine detection methods has attracted much attention. In this paper, vancomycin-stabilized platinum nanoparticles (Van-Ptn NPs, n = 0.5, 1, 2) were prepared by the biological template method, where n represented the molar ratio of vancomycin to Pt. The results show that Van-Pt2 NPs had oxidase-like activity and peroxidase-like activity, and the mechanism was due to the generation of reactive oxygen 1O2 and OH. Van-Pt2 NPs exhibited good temperature stability, storage stability, and salt solution stability. Furthermore, Van-Pt2 NPs had almost no cytotoxicity to A549 cells. More importantly, the colorimetric detection of DA in human serum samples was performed based on the oxidase-like activity of Van-Pt2 NPs. The linear range of DA detection was 10-700 μM, and the detection limit was 0.854 μM. This study establishes a rapid and reliable method for the detection of dopamine and extends the application of biosynthetic nanoparticles in the field of biosensing.
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Affiliation(s)
- Yuzhen Xue
- State Key Laboratory of Metastable Materials Science and Technology, Hebei Key Laboratory of Nano-Biotechnology, Hebei Key Laboratory of Applied Chemistry, Yanshan University, Qinhuangdao 066004, China; (Y.X.); (K.L.); (M.G.); (T.Z.); (J.H.)
| | - Kai Liu
- State Key Laboratory of Metastable Materials Science and Technology, Hebei Key Laboratory of Nano-Biotechnology, Hebei Key Laboratory of Applied Chemistry, Yanshan University, Qinhuangdao 066004, China; (Y.X.); (K.L.); (M.G.); (T.Z.); (J.H.)
| | - Mingyue Gao
- State Key Laboratory of Metastable Materials Science and Technology, Hebei Key Laboratory of Nano-Biotechnology, Hebei Key Laboratory of Applied Chemistry, Yanshan University, Qinhuangdao 066004, China; (Y.X.); (K.L.); (M.G.); (T.Z.); (J.H.)
| | - Tiantian Zhang
- State Key Laboratory of Metastable Materials Science and Technology, Hebei Key Laboratory of Nano-Biotechnology, Hebei Key Laboratory of Applied Chemistry, Yanshan University, Qinhuangdao 066004, China; (Y.X.); (K.L.); (M.G.); (T.Z.); (J.H.)
| | - Longgang Wang
- State Key Laboratory of Metastable Materials Science and Technology, Hebei Key Laboratory of Nano-Biotechnology, Hebei Key Laboratory of Applied Chemistry, Yanshan University, Qinhuangdao 066004, China; (Y.X.); (K.L.); (M.G.); (T.Z.); (J.H.)
| | - Yanshuai Cui
- Department of Environmental Engineering, Hebei University of Environmental Engineering, Qinhuangdao 066102, China; (Y.C.); (X.J.)
| | - Xianbing Ji
- Department of Environmental Engineering, Hebei University of Environmental Engineering, Qinhuangdao 066102, China; (Y.C.); (X.J.)
| | - Guanglong Ma
- Centre for Cancer Immunology, Faculty of Medicine, University of Southampton, Southampton SO166YD, UK;
| | - Jie Hu
- State Key Laboratory of Metastable Materials Science and Technology, Hebei Key Laboratory of Nano-Biotechnology, Hebei Key Laboratory of Applied Chemistry, Yanshan University, Qinhuangdao 066004, China; (Y.X.); (K.L.); (M.G.); (T.Z.); (J.H.)
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Zhao H, Liu K, Zhou L, Zhang T, Han Z, Wang L, Ji X, Cui Y, Hu J, Ma G. Platinum Palladium Bimetallic Nanozymes Stabilized with Vancomycin for the Sensitive Colorimetric Determination of L-cysteine. Biomolecules 2023; 13:1254. [PMID: 37627319 PMCID: PMC10452367 DOI: 10.3390/biom13081254] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2023] [Revised: 08/05/2023] [Accepted: 08/11/2023] [Indexed: 08/27/2023] Open
Abstract
Many diseases in the human body are related to the level of L-cysteine. Therefore, it is crucial to establish an efficient, simple and sensitive platform for L-cysteine detection. In this work, we synthesized platinum palladium bimetallic nanoparticles (Van-Ptm/Pdn NPs) using vancomycin hydrochloride (Van) as a stabilizer, which exhibited high oxidase-like catalytic activity. In addition, the catalytic kinetics of the Van-Pt1/Pd1 NPs followed the typical Michaelis-Menten equation, exhibiting a strong affinity for 3,3',5,5'-tetramethylbenzidine substrates. More importantly, we developed a simple and effective strategy for the sensitive colorimetric detection of L-cysteine using biocompatible Van-Pt1/Pd1 NPs. The detection limit was low, at 0.07 μM, which was lower than the values for many previously reported enzyme-like detection systems. The colorimetric method of the L-cysteine assay had good selectivity. The established method for the detection of L-cysteine showed promise for biomedical analysis.
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Affiliation(s)
- Han Zhao
- Hebei Key Laboratory of Nano-Biotechnology, College of Environmental and Chemical Engineering, Yanshan University, Qinhuangdao 066004, China; (H.Z.); (K.L.); (L.Z.); (T.Z.); (J.H.)
- State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China
| | - Kai Liu
- Hebei Key Laboratory of Nano-Biotechnology, College of Environmental and Chemical Engineering, Yanshan University, Qinhuangdao 066004, China; (H.Z.); (K.L.); (L.Z.); (T.Z.); (J.H.)
| | - Lijie Zhou
- Hebei Key Laboratory of Nano-Biotechnology, College of Environmental and Chemical Engineering, Yanshan University, Qinhuangdao 066004, China; (H.Z.); (K.L.); (L.Z.); (T.Z.); (J.H.)
| | - Tingting Zhang
- Hebei Key Laboratory of Nano-Biotechnology, College of Environmental and Chemical Engineering, Yanshan University, Qinhuangdao 066004, China; (H.Z.); (K.L.); (L.Z.); (T.Z.); (J.H.)
| | - Zengsheng Han
- Hebei Key Laboratory of Nano-Biotechnology, College of Environmental and Chemical Engineering, Yanshan University, Qinhuangdao 066004, China; (H.Z.); (K.L.); (L.Z.); (T.Z.); (J.H.)
| | - Longgang Wang
- Hebei Key Laboratory of Nano-Biotechnology, College of Environmental and Chemical Engineering, Yanshan University, Qinhuangdao 066004, China; (H.Z.); (K.L.); (L.Z.); (T.Z.); (J.H.)
- State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China
| | - Xianbing Ji
- Department of Environmental Engineering, Hebei University of Environmental Engineering, Qinhuangdao 066102, China; (X.J.); (Y.C.)
| | - Yanshuai Cui
- Department of Environmental Engineering, Hebei University of Environmental Engineering, Qinhuangdao 066102, China; (X.J.); (Y.C.)
| | - Jie Hu
- Hebei Key Laboratory of Nano-Biotechnology, College of Environmental and Chemical Engineering, Yanshan University, Qinhuangdao 066004, China; (H.Z.); (K.L.); (L.Z.); (T.Z.); (J.H.)
| | - Guanglong Ma
- Centre for Cancer Immunology, Faculty of Medicine, University of Southampton, Southampton SO16 6YD, UK;
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Li W, Bilal M, Singh AK, Sher F, Ashraf SS, Franco M, Américo-Pinheiro JHP, Iqbal HMN. Broadening the Scope of Biocatalysis Engineering by Tailoring Enzyme Microenvironment: A Review. Catal Letters 2022. [DOI: 10.1007/s10562-022-04065-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Behera S, Balasubramanian S. Insights into substrate behavior in a solvent-free protein liquid to rationalize its reduced catalytic rate. RSC Adv 2022; 12:11896-11905. [PMID: 35481067 PMCID: PMC9016799 DOI: 10.1039/d2ra00666a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2022] [Accepted: 04/12/2022] [Indexed: 11/21/2022] Open
Abstract
When proteins are engineered with a polymer surfactant coating on their surface, they can form a liquid phase by themselves, without the need for a solvent, such as, say, water. However, such solvent-free protein liquids (SFPL), despite their capability to function at temperatures above those in aqueous solutions, exhibit much reduced catalytic rates. A comprehensive understanding of the nature of substrates in such liquids is crucial to reason out the reduced catalytic activity of enzymes as SFPL media, and thus identify the means to improve the same. Employing atomistic molecular dynamics simulations of lipase A from Bacillus subtilis in its SFPL form, we demonstrate that at low concentrations, the substrate molecules are located mostly in the hydrophilic layer of the surfactant shell that ensheaths the enzyme; substrates in this SFPL are present in various conformations with similar propensities as in the aqueous solution. Slower translational diffusion and reorientational dynamics, as well as the reduced tendency of a substrate molecule to closely interact with the enzymes in the SFPL medium have been identified herein as the contributing factors for the reduced activity of enzymes in this hybrid liquid. At high concentrations of substrates corresponding to those used in in vitro experiments, the formation of an enzyme-substrate complex is observed. Microscopic insights reported here can aid in the choice of surfactants to improve the catalytic rate of enzymes in SFPL.
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Affiliation(s)
- Sudarshan Behera
- Chemistry and Physics of Materials Unit, Jawaharlal Nehru Centre for Advanced Scientific Research Bangalore 560 064 India
| | - Sundaram Balasubramanian
- Chemistry and Physics of Materials Unit, Jawaharlal Nehru Centre for Advanced Scientific Research Bangalore 560 064 India
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