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Chen D, Huang Y, Jiang H, Yasen W, Guo D, Su Y, Xue B, Jin X, Zhu X. Fabrication of Activity-Reporting Glucose Oxidase Nanocapsules with Oxygen-Independent Fluorescence Variation. ACS APPLIED MATERIALS & INTERFACES 2018; 10:26005-26015. [PMID: 30001103 DOI: 10.1021/acsami.8b06348] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Glucose oxidase (GOx) has seen large-scale technological applications, and the determinations of its activity that is directly related to the enzymatic functions are extremely important. However, conventional methods to analyze the enzymatic activity involving high oxygen dependency and indirect redox reactions are usually tedious and restricted in complicated environments. For analyzing enzymatic activity by direct detection of the electron signals from the active centers, mediators are often used for facilitating the electron transfer. Differing from common methods of preparing electron mediators-contained GOx composites, a strategy aiming at remolding of the enzyme itself has been proposed in this work. Cofactor-like molecule 2'-diallyamino-ethyl flavin (DAA-flavin) derived from riboflavin is synthesized and incorporated as cross-linker into the polyacrylamide (PAAm) network around GOx surface by in situ polymerization to obtain enzyme nanocapsules termed as GOx@Fla-c-PAAm. The peripheral polymer shell confines the orientation of GOx and prevents it from denaturing, whereas incorporated DAA-flavin can replace the oxygen as an alternative electron acceptor to interact with the active centers of GOx in the presence of the substrate, thus giving the nanocapsules oxygen-independent characteristics. The introduced unlimited cofactor-like molecules endow the nanocapsules redox-related fluorescence, and the intensity variation is closely correlated with the enzymatic activity. There is a high goodness of fitting ( R2 ∼ 0.990) between the slope of linear fluorescence-time plots and enzymatic activity, thereby making the nanocapsules a reliable activity-reporting enzymatic nanosystem with oxygen-independent fluorescence variation for further extended potential application in biofuel cells and biosensors.
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Affiliation(s)
- Dong Chen
- School of Chemistry and Chemical Engineering, State Key Laboratory of Metal Matrix Composites , Shanghai Jiao Tong University , 800 Dongchuan Road , Shanghai 200240 , China
| | - Yu Huang
- School of Chemistry and Chemical Engineering, State Key Laboratory of Metal Matrix Composites , Shanghai Jiao Tong University , 800 Dongchuan Road , Shanghai 200240 , China
| | - Huangyong Jiang
- School of Chemistry and Chemical Engineering, State Key Laboratory of Metal Matrix Composites , Shanghai Jiao Tong University , 800 Dongchuan Road , Shanghai 200240 , China
| | - Wumaier Yasen
- School of Chemistry and Chemical Engineering, State Key Laboratory of Metal Matrix Composites , Shanghai Jiao Tong University , 800 Dongchuan Road , Shanghai 200240 , China
| | - Dongbo Guo
- School of Chemistry and Chemical Engineering, State Key Laboratory of Metal Matrix Composites , Shanghai Jiao Tong University , 800 Dongchuan Road , Shanghai 200240 , China
| | - Yue Su
- School of Chemistry and Chemical Engineering, State Key Laboratory of Metal Matrix Composites , Shanghai Jiao Tong University , 800 Dongchuan Road , Shanghai 200240 , China
| | - Bai Xue
- School of Chemistry and Chemical Engineering, State Key Laboratory of Metal Matrix Composites , Shanghai Jiao Tong University , 800 Dongchuan Road , Shanghai 200240 , China
| | - Xin Jin
- School of Chemistry and Chemical Engineering, State Key Laboratory of Metal Matrix Composites , Shanghai Jiao Tong University , 800 Dongchuan Road , Shanghai 200240 , China
| | - Xinyuan Zhu
- School of Chemistry and Chemical Engineering, State Key Laboratory of Metal Matrix Composites , Shanghai Jiao Tong University , 800 Dongchuan Road , Shanghai 200240 , China
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Nabavi Zadeh PS, Zezzi do Valle Gomes M, Abrahamsson M, Palmqvist AEC, Åkerman B. Measuring viscosity inside mesoporous silica using protein-bound molecular rotor probe. Phys Chem Chem Phys 2018; 20:23202-23213. [DOI: 10.1039/c8cp01063c] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Fluorescence spectroscopy of protein-bound molecular rotors Cy3 and Cy5 is used to monitor the effective viscosity inside the pores of two types of mesoporous silica (SBA-15 and MCF) with pore diameters between 8.9 and 33 nm.
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Affiliation(s)
- Pegah S. Nabavi Zadeh
- Chalmers University of Technology
- Department of Chemistry and Chemical Engineering
- Physical Chemistry
- SE-41296 Gothenburg
- Sweden
| | - Milene Zezzi do Valle Gomes
- Chalmers University of Technology
- Department of Chemistry and Chemical Engineering
- Applied Chemistry
- SE-41296 Gothenburg
- Sweden
| | - Maria Abrahamsson
- Chalmers University of Technology
- Department of Chemistry and Chemical Engineering
- Physical Chemistry
- SE-41296 Gothenburg
- Sweden
| | - Anders E. C. Palmqvist
- Chalmers University of Technology
- Department of Chemistry and Chemical Engineering
- Applied Chemistry
- SE-41296 Gothenburg
- Sweden
| | - Björn Åkerman
- Chalmers University of Technology
- Department of Chemistry and Chemical Engineering
- Physical Chemistry
- SE-41296 Gothenburg
- Sweden
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4
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Nabavi Zadeh PS, Åkerman B. Immobilization of Enzymes in Mesoporous Silica Particles: Protein Concentration and Rotational Mobility in the Pores. J Phys Chem B 2017; 121:2575-2583. [DOI: 10.1021/acs.jpcb.7b00562] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Pegah S. Nabavi Zadeh
- Department of Chemistry and
Chemical Engineering, Chalmers University of Technology, Kemivägen 10, SE-41296 Gothenburg, Sweden
| | - Björn Åkerman
- Department of Chemistry and
Chemical Engineering, Chalmers University of Technology, Kemivägen 10, SE-41296 Gothenburg, Sweden
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5
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Liu J, Yang Q, Li C. Towards efficient chemical synthesis via engineering enzyme catalysis in biomimetic nanoreactors. Chem Commun (Camb) 2015. [PMID: 26208044 DOI: 10.1039/c5cc04590h] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Biocatalysis with immobilized enzymes as catalysts holds enormous promise in developing more efficient and sustainable processes for the synthesis of fine chemicals, chiral pharmaceuticals and biomass feedstocks. Despite the appealing potentials, nowadays the industrial-scale application of biocatalysts is still quite modest in comparison with that of traditional chemical catalysts. A critical issue is that the catalytic performance of enzymes, the sophisticated and vulnerable catalytic machineries, strongly depends on their intracellular working environment; however the working circumstances provided by the support matrix are radically different from those in cells. This often leads to various adverse consequences on enzyme conformation and dynamic properties, consequently decreasing the overall performance of immobilized enzymes with regard to their activity, selectivity and stability. Engineering enzyme catalysis in support nanopores by mimicking the physiological milieu of enzymes in vivo and investigating how the interior microenvironment of nanopores imposes an influence on enzyme behaviors in vitro are of paramount significance to modify and improve the catalytic functions of immobilized enzymes. In this feature article, we have summarized the recent advances in mimicking the working environment and working patterns of intracellular enzymes in nanopores of mesoporous silica-based supports. Especially, we have demonstrated that incorporation of polymers into silica nanopores could be a valuable approach to create the biomimetic microenvironment for enzymes in the immobilized state.
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Affiliation(s)
- Jia Liu
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China.
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6
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Gan Q, Zhu J, Yuan Y, Liu H, Zhu Y, Liu C. A proton-responsive ensemble using mesocellular foam supports capped with N,O-carboxymethyl chitosan for controlled release of bioactive proteins. J Mater Chem B 2015; 3:2281-2285. [DOI: 10.1039/c5tb00219b] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A novel pH-responsive mesocellular foam-based nanocarrier was fabricated by the covalent assembly of a water-soluble N,O-carboxymethyl chitosan via the crosslinking of GPTMS for controlled release of proteins and maintaining their bioactivity.
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Affiliation(s)
- Qi Gan
- The State Key Laboratory of Bioreactor Engineering
- East China University of Science and Technology
- Shanghai 200237
- PR China
- Key Laboratory for Ultrafine Materials of Ministry of Education
| | - Jiaoyang Zhu
- The State Key Laboratory of Bioreactor Engineering
- East China University of Science and Technology
- Shanghai 200237
- PR China
- Key Laboratory for Ultrafine Materials of Ministry of Education
| | - Yuan Yuan
- The State Key Laboratory of Bioreactor Engineering
- East China University of Science and Technology
- Shanghai 200237
- PR China
- Key Laboratory for Ultrafine Materials of Ministry of Education
| | - Honglai Liu
- State Key Laboratory of Chemical Engineering and Department of Chemistry
- East China University of Science and Technology
- Shanghai 200237
- PR China
| | - Yihua Zhu
- Key Laboratory for Ultrafine Materials of Ministry of Education
- Engineering Research Center for Biomedical Materials of Ministry of Education
- East China University of Science and Technology
- Shanghai 200237
- PR China
| | - Changsheng Liu
- The State Key Laboratory of Bioreactor Engineering
- East China University of Science and Technology
- Shanghai 200237
- PR China
- Key Laboratory for Ultrafine Materials of Ministry of Education
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7
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Ikemoto H, Mossin SL, Ulstrup J, Chi Q. Probing structural and catalytic characteristics of galactose oxidase confined in nanoscale chemical environments. RSC Adv 2014. [DOI: 10.1039/c4ra00653d] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Synopsis: structural and catalytic features of a complex enzyme galactose oxidase confined in nanoscale chemical environments were investigated to show the catalytic efficiency of the enzyme depending on both the degree of space confinement and immobilization method.
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Affiliation(s)
- Hideki Ikemoto
- Department of Chemistry
- Technical University of Denmark
- DK-2800 Kongens Lyngby, Denmark
| | - Susanne L. Mossin
- Department of Chemistry
- Technical University of Denmark
- DK-2800 Kongens Lyngby, Denmark
| | - Jens Ulstrup
- Department of Chemistry
- Technical University of Denmark
- DK-2800 Kongens Lyngby, Denmark
| | - Qijin Chi
- Department of Chemistry
- Technical University of Denmark
- DK-2800 Kongens Lyngby, Denmark
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