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Synthesis of a novel chitosan-based Ce(IV) complex with proteolytic activity in vitro toward edible biological proteins. Carbohydr Polym 2015; 140:154-62. [PMID: 26876839 DOI: 10.1016/j.carbpol.2015.12.035] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2015] [Revised: 11/22/2015] [Accepted: 12/15/2015] [Indexed: 12/12/2022]
Abstract
The occurrence of enzymatic activities is attributed to proper spatial organization of functional groups from first principles. A novel chitosan-based Ce(IV) complex (CC[Ce(IV)]), an artificial metalloproteinase, was synthesized by attaching cyclen, Ce(IV), and chlorophyll-Cu(II) to a chitosan-based matrix. The enzymatic hydrolytic efficiency (HE) and the procedure of catalyzing myoglobin (Mb) by CC[Ce(IV)] in vitro were investigated using spectrophotometry, electrophoresis, and liquid chromatography. The results showed that the HE of Mb was up to 60% at 60°C within 24h, displaying a catalytic proficiency. The pseudo-first-order kinetic constant (kobs) for CC[Ce(IV)] treatment within 24h was 3.85×10(-2)h(-1), higher than that for α-chymotrypsin treatment, which was 2.63×10(-2)h(-1). Moreover, the peptide bond derived from Asp-Phe/Phe-Asp in Mb could be specifically cleaved by CC[Ce(IV)], which could simulate the functionality of α-chymotrypsin. This work provides an experimental basis for potential utilization of the chitosan-based Ce(IV) complexes in the food industry.
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de J. Martins D, Hanif-Ur-Rehman HUR, Alves Rico SR, de M. Costa I, Pio Santos AC, Szszudlowski RG, de Oliveira Silva D. Interaction of chitosan beads with a copper–naproxen metallodrug. RSC Adv 2015. [DOI: 10.1039/c5ra16878c] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A new hybrid material resulting from the interaction of chitosan beads with a copper–naproxen metallodrug was prepared and characterized. The Acrycoat-coated beads were investigated for release behavior in gastric/intestinal pH simulated solutions.
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Affiliation(s)
- Douglas de J. Martins
- Departamento de Química Fundamental
- Instituto de Química
- Universidade de São Paulo
- São Paulo
- Brasil
| | | | - Samara R. Alves Rico
- Departamento de Química Fundamental
- Instituto de Química
- Universidade de São Paulo
- São Paulo
- Brasil
| | - Iguatinã de M. Costa
- Departamento de Química Fundamental
- Instituto de Química
- Universidade de São Paulo
- São Paulo
- Brasil
| | - Andrea C. Pio Santos
- Departamento de Química Fundamental
- Instituto de Química
- Universidade de São Paulo
- São Paulo
- Brasil
| | - Rachel G. Szszudlowski
- Departamento de Química Fundamental
- Instituto de Química
- Universidade de São Paulo
- São Paulo
- Brasil
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Wang X, Ding M, Liu Z, Wang D. Synthesis of a chitosan-based functional biopolymer with both catalytic and binding groups for protein and DNA hydrolysis. RSC Adv 2015. [DOI: 10.1039/c4ra15828h] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Abstract
Protein and DNA hydrolysis by chitosan-based biopolymer with catalytic and binding groups.
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Affiliation(s)
- Xingyu Wang
- College of Food Science and Engineering
- Ocean University of China
- Qingdao
- China
| | - Mei Ding
- College of Food Science and Engineering
- Ocean University of China
- Qingdao
- China
| | - Zihui Liu
- College of Food Science and Engineering
- Ocean University of China
- Qingdao
- China
| | - Dongfeng Wang
- College of Food Science and Engineering
- Ocean University of China
- Qingdao
- China
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Li B, Chen D, Wang J, Yan Z, Jiang L, Deliang Duan, He J, Luo Z, Zhang J, Yuan F. MOFzyme: Intrinsic protease-like activity of Cu-MOF. Sci Rep 2014; 4:6759. [PMID: 25342169 PMCID: PMC4208042 DOI: 10.1038/srep06759] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2014] [Accepted: 10/06/2014] [Indexed: 01/03/2023] Open
Abstract
The construction of efficient enzyme mimetics for the hydrolysis of peptide bonds in proteins is challenging due to the high stability of peptide bonds and the importance of proteases in biology and industry. Metal-organic frameworks (MOFs) consisting of infinite crystalline lattices with metal clusters and organic linkers may provide opportunities for protease mimic which has remained unknown. Herein, we report that Cu2(C9H3O6)4/3 MOF (which is well known as HKUST-1 and denoted as Cu-MOF here), possesses an intrinsic enzyme mimicking activity similar to that found in natural trypsin to bovine serum albumin (BSA) and casein. The Michaelis constant (Km) of Cu-MOF is about 26,000-fold smaller than that of free trypsin indicating a much higher affinity of BSA for Cu-MOF surface. Cu-MOF also exhibited significantly higher catalytic efficiency than homogeneous artificial metalloprotease Cu(II) complexes and could be reused for ten times without losing in its activity. Moreover, Cu-MOF was successfully used to simulate trypsinization in cell culture since it dissociated cells in culture even without EDTA.
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Affiliation(s)
- Bin Li
- Yunnan Engineering Research Center of Photocatalytic Treatment of Industrial Wastewater, The Universities' Center for Photocatalytic Treatment of Pollutants in Yunnan Province, Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, School of Chemical Sciences &Technology, Yunnan University, Kunming 650091, P.R. China
| | - Daomei Chen
- Yunnan Engineering Research Center of Photocatalytic Treatment of Industrial Wastewater, The Universities' Center for Photocatalytic Treatment of Pollutants in Yunnan Province, Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, School of Chemical Sciences &Technology, Yunnan University, Kunming 650091, P.R. China
| | - Jiaqiang Wang
- Yunnan Engineering Research Center of Photocatalytic Treatment of Industrial Wastewater, The Universities' Center for Photocatalytic Treatment of Pollutants in Yunnan Province, Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, School of Chemical Sciences &Technology, Yunnan University, Kunming 650091, P.R. China
| | - Zhiying Yan
- Yunnan Engineering Research Center of Photocatalytic Treatment of Industrial Wastewater, The Universities' Center for Photocatalytic Treatment of Pollutants in Yunnan Province, Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, School of Chemical Sciences &Technology, Yunnan University, Kunming 650091, P.R. China
| | - Liang Jiang
- Yunnan Engineering Research Center of Photocatalytic Treatment of Industrial Wastewater, The Universities' Center for Photocatalytic Treatment of Pollutants in Yunnan Province, Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, School of Chemical Sciences &Technology, Yunnan University, Kunming 650091, P.R. China
| | - Deliang Duan
- Yunnan Engineering Research Center of Photocatalytic Treatment of Industrial Wastewater, The Universities' Center for Photocatalytic Treatment of Pollutants in Yunnan Province, Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, School of Chemical Sciences &Technology, Yunnan University, Kunming 650091, P.R. China
| | - Jiao He
- Yunnan Engineering Research Center of Photocatalytic Treatment of Industrial Wastewater, The Universities' Center for Photocatalytic Treatment of Pollutants in Yunnan Province, Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, School of Chemical Sciences &Technology, Yunnan University, Kunming 650091, P.R. China
| | - Zhongrui Luo
- Yunnan Engineering Research Center of Photocatalytic Treatment of Industrial Wastewater, The Universities' Center for Photocatalytic Treatment of Pollutants in Yunnan Province, Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, School of Chemical Sciences &Technology, Yunnan University, Kunming 650091, P.R. China
| | - Jinping Zhang
- Yunnan Engineering Research Center of Photocatalytic Treatment of Industrial Wastewater, The Universities' Center for Photocatalytic Treatment of Pollutants in Yunnan Province, Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, School of Chemical Sciences &Technology, Yunnan University, Kunming 650091, P.R. China
| | - Fagui Yuan
- Yunnan Engineering Research Center of Photocatalytic Treatment of Industrial Wastewater, The Universities' Center for Photocatalytic Treatment of Pollutants in Yunnan Province, Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, School of Chemical Sciences &Technology, Yunnan University, Kunming 650091, P.R. China
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Mallakpour S, Dinari M, Hadadzadeh H, Daryanavard M, Roudi F. Preparation, Characterization and Solid-State Emission of Metal Complex-Cloisite Nanohybrids (MC-C, M = Ru (II) and Cu (II)). J Fluoresc 2014; 24:1841-8. [DOI: 10.1007/s10895-014-1472-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2014] [Accepted: 09/29/2014] [Indexed: 10/24/2022]
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