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Ifra, Singh A, Saha S. High Adsorption of α-Glucosidase on Polymer Brush-Modified Anisotropic Particles Acquired by Electrospraying-A Combined Experimental and Simulation Study. ACS APPLIED BIO MATERIALS 2021; 4:7431-7444. [PMID: 35006717 DOI: 10.1021/acsabm.1c00682] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
In this particular contribution, we aim to immobilize a model enzyme such as α-glucosidase onto poly(DMAEMA) [poly(2-dimethyl amino ethyl methacrylate)] brush-modified anisotropic (cup- and disc-shaped) biocompatible polymeric particles. The anisotropic particles comprising a blend of PLA [poly(lactide)] and poly(MMA-co-BEMA) [poly((methyl methacrylate)-co-(2-(2-bromopropionyloxy) ethyl methacrylate)] were acquired by electrospraying, a scalable and convenient technique. We have also demonstrated the role of a swollen polymer brush grafted on the surface of cup-/disc-shaped particles via surface-initiated atom transfer radical polymerization in immobilizing an unprecedentedly high loading of enzyme [441 mg/g (cup)-589 mg/g (disc) of particles, 15-20 times higher than that of the literature-reported system] as compared to non-brush-modified particles. Circular dichroism spectroscopy was used to predict the structural changes of the enzyme upon immobilization onto the carrier particles. An enormously high amount of enzymes with preserved activity (∼85 ± 13% for cups and ∼78 ± 15% for discs) was found to adhere onto brush-modified particles at pH 7 via electrostatic adsorption. These findings were further explored at the atomistic level using a coarse-grained dissipative particle dynamics simulation approach, which exhibited excellent correlation with experimental results. In addition, accelerated particle separation was also achieved via magnetic force-induced aggregation within 20 min (without a centrifuge) by incorporating magnetic nanoparticles into disc-shaped particles while electrojetting. This further strengthens the technical feasibility of the process, which holds immense potential to be applied for various enzymes intended for several applications.
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Affiliation(s)
- Ifra
- Department of Materials Science and Engineering, Indian Institute of Technology Delhi, New Delhi 110016, India
| | - Awaneesh Singh
- Department of Physics, Indian Institute of Technology (BHU), Varanasi 221005, India
| | - Sampa Saha
- Department of Materials Science and Engineering, Indian Institute of Technology Delhi, New Delhi 110016, India
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Sui X, Yuan J, Zhou M, Zhang J, Yang H, Yuan W, Wei Y, Pan C. Synthesis of Cellulose-graft-Poly(N,N-dimethylamino-2-ethyl methacrylate) Copolymers via Homogeneous ATRP and Their Aggregates in Aqueous Media. Biomacromolecules 2008; 9:2615-20. [DOI: 10.1021/bm800538d] [Citation(s) in RCA: 174] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Xiaofeng Sui
- Key Laboratory of Organic Optoelectronics and Molecular Engineering of the Ministry of Education, Department of Chemistry, Tsinghua University, Beijing 100084, People’s Republic of China, Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Engineering Plastics (KLEP), Institute of Chemistry, Chinese Academy of Sciences (CAS), Beijing 100190, People’s Republic of China, Department of Chemistry, Drexel University, Philadelphia, Pennsylvania 19104, and Department of Polymer Science
| | - Jinying Yuan
- Key Laboratory of Organic Optoelectronics and Molecular Engineering of the Ministry of Education, Department of Chemistry, Tsinghua University, Beijing 100084, People’s Republic of China, Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Engineering Plastics (KLEP), Institute of Chemistry, Chinese Academy of Sciences (CAS), Beijing 100190, People’s Republic of China, Department of Chemistry, Drexel University, Philadelphia, Pennsylvania 19104, and Department of Polymer Science
| | - Mi Zhou
- Key Laboratory of Organic Optoelectronics and Molecular Engineering of the Ministry of Education, Department of Chemistry, Tsinghua University, Beijing 100084, People’s Republic of China, Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Engineering Plastics (KLEP), Institute of Chemistry, Chinese Academy of Sciences (CAS), Beijing 100190, People’s Republic of China, Department of Chemistry, Drexel University, Philadelphia, Pennsylvania 19104, and Department of Polymer Science
| | - Jun Zhang
- Key Laboratory of Organic Optoelectronics and Molecular Engineering of the Ministry of Education, Department of Chemistry, Tsinghua University, Beijing 100084, People’s Republic of China, Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Engineering Plastics (KLEP), Institute of Chemistry, Chinese Academy of Sciences (CAS), Beijing 100190, People’s Republic of China, Department of Chemistry, Drexel University, Philadelphia, Pennsylvania 19104, and Department of Polymer Science
| | - Haijun Yang
- Key Laboratory of Organic Optoelectronics and Molecular Engineering of the Ministry of Education, Department of Chemistry, Tsinghua University, Beijing 100084, People’s Republic of China, Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Engineering Plastics (KLEP), Institute of Chemistry, Chinese Academy of Sciences (CAS), Beijing 100190, People’s Republic of China, Department of Chemistry, Drexel University, Philadelphia, Pennsylvania 19104, and Department of Polymer Science
| | - Weizhong Yuan
- Key Laboratory of Organic Optoelectronics and Molecular Engineering of the Ministry of Education, Department of Chemistry, Tsinghua University, Beijing 100084, People’s Republic of China, Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Engineering Plastics (KLEP), Institute of Chemistry, Chinese Academy of Sciences (CAS), Beijing 100190, People’s Republic of China, Department of Chemistry, Drexel University, Philadelphia, Pennsylvania 19104, and Department of Polymer Science
| | - Yen Wei
- Key Laboratory of Organic Optoelectronics and Molecular Engineering of the Ministry of Education, Department of Chemistry, Tsinghua University, Beijing 100084, People’s Republic of China, Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Engineering Plastics (KLEP), Institute of Chemistry, Chinese Academy of Sciences (CAS), Beijing 100190, People’s Republic of China, Department of Chemistry, Drexel University, Philadelphia, Pennsylvania 19104, and Department of Polymer Science
| | - Caiyuan Pan
- Key Laboratory of Organic Optoelectronics and Molecular Engineering of the Ministry of Education, Department of Chemistry, Tsinghua University, Beijing 100084, People’s Republic of China, Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Engineering Plastics (KLEP), Institute of Chemistry, Chinese Academy of Sciences (CAS), Beijing 100190, People’s Republic of China, Department of Chemistry, Drexel University, Philadelphia, Pennsylvania 19104, and Department of Polymer Science
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Roy D, Guthrie JT, Perrier S. Synthesis of natural-synthetic hybrid materials from cellulose via the RAFT process. SOFT MATTER 2007; 4:145-155. [PMID: 32907094 DOI: 10.1039/b711248n] [Citation(s) in RCA: 67] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
The synthesis and characterization of a novel natural-synthetic hybrid material based on cellulose is reported. The reversible addition-fragmentation chain-transfer (RAFT) process was used to graft poly(2-(dimethylamino)ethyl methacrylate) (PDMAEMA) onto a cellulosic substrate. The weight ratio was increased with an increase in monomer concentration, polymerization time and degree of polymerization (DP). We found that the addition of free chain-transfer agent has a pronounced effect on the weight ratio, chain length of grafted polymer, monomer conversion and homopolymer formation in solution. The cellulose-graft-poly(2-(dimethylamino)ethyl methacrylate) copolymers were characterized by gravimetry, elemental analysis, attenuated total reflectance Fourier transform infrared spectroscopy, scanning electron microscopy, thermal analysis and atomic force microscopy. The dithioester end-group present at the chain end of PDMAEMA was removed via aminolysis. The livingness of the process was utilized to block-copolymerize styrene from the grafted PDMAEMA chains. The hydrophilic/hydrophobic properties of the novel cellulose-g-(PDMAEMA-b-polystyrene) material were illustrated by contact-angle measurements.
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Affiliation(s)
- Debashish Roy
- Department of Colour and Polymer Chemistry, University of Leeds, Woodhouse lane, Leeds, UKLS2 9JT
| | - James T Guthrie
- Department of Colour and Polymer Chemistry, University of Leeds, Woodhouse lane, Leeds, UKLS2 9JT
| | - Sébastien Perrier
- Department of Colour and Polymer Chemistry, University of Leeds, Woodhouse lane, Leeds, UKLS2 9JT
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