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Muronetz VI, Pozdyshev DV, Semenyuk PI. Polyelectrolytes for Enzyme Immobilization and the Regulation of Their Properties. Polymers (Basel) 2022; 14:polym14194204. [PMID: 36236151 PMCID: PMC9571273 DOI: 10.3390/polym14194204] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2022] [Revised: 09/30/2022] [Accepted: 10/05/2022] [Indexed: 11/16/2022] Open
Abstract
In this review, we considered aspects related to the application of polyelectrolytes, primarily synthetic polyanions and polycations, to immobilize enzymes and regulate their properties. We mainly focused on the description of works in which polyelectrolytes were used to create complex and unusual systems (self-regulated enzyme-polyelectrolyte complexes, artificial chaperones, polyelectrolyte brushes, layer-by-layer immobilization and others). These works represent the field of "smart polymers", whilst the trivial use of charged polymers as carriers for adsorption or covalent immobilization of proteins is beyond the scope of this short review. In addition, we have included a section on the molecular modeling of interactions between proteins and polyelectrolytes, as modeling the binding of proteins with a strictly defined, and already known, spatial structure, to disordered polymeric molecules has its own unique characteristics.
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Affiliation(s)
- Vladimir I. Muronetz
- Belozersky Research Institute of Physico-Chemical Biology, Lomonosov Moscow State University, Leninskie Gory 1, Bld 40, 119992 Moscow, Russia
- Butlerov Chemical Institute, Kazan Federal University, Kremlevskaya 18, 420008 Kazan, Russia
- Correspondence: ; Tel.: +7-(495)939-14-56
| | - Denis V. Pozdyshev
- Belozersky Research Institute of Physico-Chemical Biology, Lomonosov Moscow State University, Leninskie Gory 1, Bld 40, 119992 Moscow, Russia
| | - Pavel I. Semenyuk
- Belozersky Research Institute of Physico-Chemical Biology, Lomonosov Moscow State University, Leninskie Gory 1, Bld 40, 119992 Moscow, Russia
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2
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Karanastasis AA, Kenath GS, Andersen D, Fokas D, Ryu CY, Ullal CK. One-pot surfactant-free modulation of size and functional group distribution in thermoresponsive microgels. J Colloid Interface Sci 2020; 568:264-272. [PMID: 32092555 DOI: 10.1016/j.jcis.2020.02.057] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2019] [Revised: 02/13/2020] [Accepted: 02/14/2020] [Indexed: 01/08/2023]
Abstract
Control over the size and functional group distribution of soft responsive hydrogel particles is essential for applications such as drug delivery, catalysis and chemical sensing. Traditionally, targeted functional group distributions are achieved with semi-batch techniques which require specialized equipment, while the preparation of size-tailored particles typically involves the use of surfactants. Herein, we present a simple and robust surfactant-free method for the modulation of size and carboxylic acid functional group distribution in poly(N-isopropylacrylamide) thermoresponsive microgels, employing reaction pH as the single experimental parameter. The varying distributions of carboxylic acid residues arise due to differences in kinetic reactivity, which are a function of the degree of dissociation of methacrylic acid, and thus of reaction pH. Incorporated charged residues induce a surfactant-like action during the particle nucleation stage, and impact the final particle size. Characterization with dynamic light scattering, and electron microscopy consistently supports the pH-tailored morphology of the microgels. A mathematical model which accounts for particle deformation on the imaging substrate also shows excellent agreement with the experimental results.
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Affiliation(s)
- Apostolos A Karanastasis
- Department of Materials Science and Engineering, Rensselaer Polytechnic Institute, Troy, NY, USA.
| | - Gopal S Kenath
- Department of Materials Science and Engineering, Rensselaer Polytechnic Institute, Troy, NY, USA
| | - Dustin Andersen
- Department of Materials Science and Engineering, Rensselaer Polytechnic Institute, Troy, NY, USA
| | - Demosthenes Fokas
- Department of Materials Science and Engineering, University of Ioannina, Ioannina, Greece
| | - Chang Y Ryu
- Department of Chemistry and Chemical Biology, Rensselaer Polytechnic Institute, Troy, NY, USA
| | - Chaitanya K Ullal
- Department of Materials Science and Engineering, Rensselaer Polytechnic Institute, Troy, NY, USA
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3
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Jiang H, Liu L, Li Y, Yin S, Ngai T. Inverse Pickering Emulsion Stabilized by Binary Particles with Contrasting Characteristics and Functionality for Interfacial Biocatalysis. ACS APPLIED MATERIALS & INTERFACES 2020; 12:4989-4997. [PMID: 31909591 DOI: 10.1021/acsami.9b16117] [Citation(s) in RCA: 59] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Water-in-oil (w/o) Pickering emulsions have received considerable attention in biphasic enzymatic catalysis for their advantages of good stability, large interfacial area, and ease of product separation. However, enzymes are commonly encapsulated in the interior of aqueous droplets, which inevitably increases the diffusional resistance to catalysis. Alternatively, enzymes are immobilized or trapped into Pickering stabilizers. Often, however, these approaches suffer from leaching and a decrease of enzyme activity during the chemical treatments. We report here a new Pickering interfacial biocatalysis platform with efficient enzyme encapsulation, binary particle composition, and high catalytic performance. Our approach is based on w/o Pickering emulsions stabilized by binary particles consisting of hard silica and soft, pH-responsive microgel particles. We demonstrate that pH-responsive microgels can simultaneously stabilize a w/o Pickering emulsion, encapsulate enzymes, and catalyze reactions at the water/oil interface. In addition, we show that the coordination with rigid silica nanoparticles as additional stabilizers markedly improves the emulsion structure and will provide a new avenue for the preparation of w/o Pickering emulsion and concept of biphasic catalysis.
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Affiliation(s)
- Hang Jiang
- Department of Chemistry , The Chinese University of Hong Kong , Shatin , N.T., Hong Kong , P. R. China
| | - Liangdong Liu
- Department of Chemistry , The Chinese University of Hong Kong , Shatin , N.T., Hong Kong , P. R. China
| | - Yunxing Li
- Department of Chemistry , The Chinese University of Hong Kong , Shatin , N.T., Hong Kong , P. R. China
- The Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering , Jiangnan University , Wuxi 214122 , P. R. China
| | - Shouwei Yin
- Research and Development Centre of Food Proteins, School of Food Science and Engineering , South China University of Technology , Guangzhou 510640 , P. R. China
| | - To Ngai
- Department of Chemistry , The Chinese University of Hong Kong , Shatin , N.T., Hong Kong , P. R. China
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4
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Covalently Immobilized Lipase on a Thermoresponsive Polymer with an Upper Critical Solution Temperature as an Efficient and Recyclable Asymmetric Catalyst in Aqueous Media. ChemCatChem 2018. [DOI: 10.1002/cctc.201701512] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
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5
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Sivakumaran D, Mueller E, Hoare T. Microfluidic production of degradable thermoresponsive poly(N-isopropylacrylamide)-based microgels. SOFT MATTER 2017; 13:9060-9070. [PMID: 29177347 DOI: 10.1039/c7sm01361b] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Highly monodisperse and hydrolytically degradable thermoresponsive microgels on the tens-to-hundreds of micron size scale have been fabricated based on simultaneous on-chip mixing and emulsification of aldehyde and hydrazide-functionalized poly(N-isopropylacrylamide) precursor polymers. The microfluidic chip can run for extended periods without upstream gelation and can produce monodisperse (<10% particle size variability) microgels on the size range of ∼30-90 μm, with size tunable according to the flow rate of the oil continuous phase. Fluorescence analysis indicates a uniform distribution of each reactive pre-polymer inside the microgels while micromechanical testing suggests that smaller microfluidic-produced microgels exhibit significantly higher compressive moduli compared to bulk hydrogels of the same composition, an effect we attribute to improved mixing (and thus crosslinking) of the precursor polymer solutions within the microfluidic device. The microgels retain the reversible volume phase transition behavior of conventional microgels but can be hydrolytically degraded back into their oligomeric precursor polymer fragments, offering potential for microgel clearance following use in vivo.
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Affiliation(s)
- Daryl Sivakumaran
- Department of Chemical Engineering, McMaster University, 1280 Main St. W, Hamilton, Ontario L8S 4L7, Canada.
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6
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Preparation of Uniform-Sized and Dual Stimuli-Responsive Microspheres of Poly( N-Isopropylacrylamide)/Poly(Acrylic acid) with Semi-IPN Structure by One-Step Method. Polymers (Basel) 2016; 8:polym8030090. [PMID: 30979184 PMCID: PMC6432549 DOI: 10.3390/polym8030090] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2015] [Revised: 01/31/2016] [Accepted: 03/14/2016] [Indexed: 02/06/2023] Open
Abstract
A novel strategy was developed to synthesize uniform semi-interpenetrating polymer network (semi-IPN) microspheres by premix membrane emulsification combined with one-step polymerization. Synthesized poly(acrylic acid) (PAAc) polymer chains were added prior to the inner water phase, which contained N-isopropylacrylamide (NIPAM) monomer, N,N′-methylene bisacrylamide (MBA) cross-linker, and ammonium persulfate (APS) initiator. The mixtures were pressed through a microporous membrane to form a uniform water-in-oil emulsion. By crosslinking the NIPAM in a PAAc-containing solution, microspheres with temperature- and pH-responsive properties were fabricated. The semi-IPN structure and morphology of the microspheres were confirmed by Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), and transmission electron microscopy (TEM). The average diameter of the obtained microspheres was approximately 6.5 μm, with Span values of less than 1. Stimuli-responsive behaviors of the microspheres were studied by the cloud-point method. The results demonstrated that semi-IPN microspheres could respond independently to both pH and temperature changes. After storing in a PBS solution (pH 7.0) at 4 °C for 6 months, the semi-IPN microspheres remained stable without a change in morphology or particle size. This study demonstrated a promising method for controlling the synthesis of semi-IPN structure microspheres with a uniform size and multiple functionalities.
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7
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Wei Q, Xu M, Liao C, Wu Q, Liu M, Zhang Y, Wu C, Cheng L, Wang Q. Printable hybrid hydrogel by dual enzymatic polymerization with superactivity. Chem Sci 2016; 7:2748-2752. [PMID: 28660051 PMCID: PMC5477016 DOI: 10.1039/c5sc02234g] [Citation(s) in RCA: 86] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2015] [Accepted: 12/19/2015] [Indexed: 12/20/2022] Open
Abstract
Hybrid hydrogels were fabricated via a new approach employing a dual enzyme-mediated redox initiation reaction and their applications for 3D printing and biocatalysis.
A new approach has been developed to fabricate tough hybrid hydrogels by employing dual enzyme-mediated redox initiation to achieve post-self-assembly cross-linking polymerization. The resulting hydrogel combines the merits of supramolecular hydrogels with polymeric hydrogels to achieve higher mechanical strength and porous networks. Designed 3D constructs were fabricated via in situ 3D printing. The in situ immobilized GOx/HRP in Gel II exhibited superactivity compared to free enzymes, which might be attributed to the synergistic effect of co-localized GOx and HRP minimizing the distances for mass transport between the gel and the bulk solution. This mechanically strong hybrid hydrogel maintained high reusability and thermal stability as well. In addition, in situ 3D cell culture was demonstrated, thus indicating that this biodegradable hybrid hydrogel is biocompatible with cells. The subsequent 3D cell printing further indicates that the hybrid hydrogel is a promising scaffold for bio-related applications such as biocatalysis and tissue engineering.
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Affiliation(s)
- Qingcong Wei
- Department of Chemistry , Advanced Research Institute , Tongji University , Shanghai 200092 , P. R. China .
| | - Mengchi Xu
- State Key Laboratory of Performance Ceramics and Superfine Microstructure , Shanghai Institute of Ceramics , Chinese Academy of Sciences , Shanghai 200050 , P. R. China .
| | - Chuanan Liao
- Department of Chemistry , Advanced Research Institute , Tongji University , Shanghai 200092 , P. R. China .
| | - Qing Wu
- Department of Chemistry , Advanced Research Institute , Tongji University , Shanghai 200092 , P. R. China .
| | - Mingyu Liu
- School of Life Sciences and Technology , Tongji University , Shanghai 200092 , P. R. China
| | - Ye Zhang
- Bioinspired Soft Matter Unit , Okinawa Institute of Science and Technology , Okinawa , Japan .
| | - Chengtie Wu
- State Key Laboratory of Performance Ceramics and Superfine Microstructure , Shanghai Institute of Ceramics , Chinese Academy of Sciences , Shanghai 200050 , P. R. China .
| | - Liming Cheng
- Spine Division of Orthopaedics Department , Tongji Hospital , Tongji University School of Medicine , Shanghai 200065 , P. R. China
| | - Qigang Wang
- Department of Chemistry , Advanced Research Institute , Tongji University , Shanghai 200092 , P. R. China .
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8
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Wei Q, Xu W, Liu M, Wu Q, Cheng L, Wang Q. Viscosity-controlled printing of supramolecular-polymeric hydrogels via dual-enzyme catalysis. J Mater Chem B 2016; 4:6302-6306. [PMID: 32263531 DOI: 10.1039/c6tb01792d] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Hybrid hydrogels based on a guanidinium-containing oligopeptide are prepared via dual-enzyme-triggered reactions. An extended time window is available for in situ viscosity-controlled 3D printing.
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Affiliation(s)
- Qingcong Wei
- Department of Chemistry
- and Advanced Research Institute
- Tongji University
- Shanghai 200092
- China
| | - Wei Xu
- Spine Division of Orthopaedics Department
- Tongji Hospital
- Tongji University School of Medicine
- Shanghai 200065
- China
| | - Mingyu Liu
- School of Life Sciences and Technology
- Tongji University
- Shanghai 200092
- P. R. China
| | - Qing Wu
- Department of Chemistry
- and Advanced Research Institute
- Tongji University
- Shanghai 200092
- China
| | - Liming Cheng
- Spine Division of Orthopaedics Department
- Tongji Hospital
- Tongji University School of Medicine
- Shanghai 200065
- China
| | - Qigang Wang
- Department of Chemistry
- and Advanced Research Institute
- Tongji University
- Shanghai 200092
- China
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9
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Wu Q, Wang X, Liao C, Wei Q, Wang Q. Microgel coating of magnetic nanoparticles via bienzyme-mediated free-radical polymerization for colorimetric detection of glucose. NANOSCALE 2015; 7:16578-16582. [PMID: 26412343 DOI: 10.1039/c5nr05716g] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
This study describes a new strategy for the fabrication of magnetic core-shell microgels by free-radical polymerization triggered by the cascade reaction of glucose oxidase (GOx) and horseradish peroxidase (HRP). The mild polymerization around the interface of the magnetic nanoparticles permits the mild coating of the microgel layer with excellent characteristics for various applications in biocatalysis and medical diagnostics, as well as in clinical fields. The immobilized bienzyme within the microgel has a largely retained activity relative to the non-immobilized one. The confining effect of the microgel and the well designed distance between the two enzymes can benefit the diffusion of intermediates to the HRP active site. The final microgels can be incontestably employed as sensitive biosensors for colorimetric glucose detection.
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Affiliation(s)
- Qing Wu
- Department of Chemistry and Advanced Research Institute, Tongji University, Shanghai 200092, China.
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10
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Liao CA, Wu Q, Wei QC, Wang QG. Bioinorganic nanocomposite hydrogels formed by HRP-GOx-cascade-catalyzed polymerization and exfoliation of the layered composites. Chemistry 2015; 21:12620-6. [PMID: 26230284 DOI: 10.1002/chem.201501529] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2015] [Indexed: 12/24/2022]
Abstract
The mild preparation of multifunctional nanocomposite hydrogels is of great importance for practical applications. We report that bioinorganic nanocomposite hydrogels, with calcium niobate nanosheets as cross-linkers, can be prepared by dual-enzyme-triggered polymerization and exfoliation of the layered composite. The layered HRP/calcium niobate composites (HRP=horseradish peroxidase) are formed by the assembly of the calcium niobate nanosheets with HRP. The dual-enzyme-triggered polymerization can induce the subsequent exfoliation of the layered composite and final gelation through the interaction between polymer chains and inorganic nanosheets. The self-immobilized HRP-GOx enzymes (GOx=glucose oxidase) within the nanocomposite hydrogel retain most of enzymatic activity. Evidently, their thermal stability and reusability can be improved. Notably, our strategy could be easily extended to other inorganic layered materials for the fabrication of other functional nanocomposite hydrogels.
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Affiliation(s)
- Chuan-An Liao
- Department of Chemistry, Tongji University, Shanghai 200092 (P. R. China)
| | - Qing Wu
- Department of Chemistry, Tongji University, Shanghai 200092 (P. R. China)
| | - Qing-Cong Wei
- Department of Chemistry, Tongji University, Shanghai 200092 (P. R. China)
| | - Qi-Gang Wang
- Department of Chemistry, Tongji University, Shanghai 200092 (P. R. China).
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11
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Liu Y, Wang Y, Jiang Y, Hu M, Li S, Zhai Q. Biocatalytic synthesis of C3 chiral building blocks by chloroperoxidase-catalyzed enantioselective halo-hydroxylation and epoxidation in the presence of ionic liquids. Biotechnol Prog 2015; 31:724-9. [PMID: 25826799 DOI: 10.1002/btpr.2076] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2014] [Revised: 03/02/2015] [Indexed: 11/11/2022]
Abstract
The optically active C3 synthetic blocks are remarkably versatile intermediates for the synthesis of numerous pharmaceuticals and agrochemicals. This work provides a simple and efficient enzymatic synthetic route for the environment-friendly synthesis of C3 chiral building blocks. Chloroperoxidase (CPO)-catalyzed enantioselective halo-hydroxylation and epoxidation of chloropropene and allyl alcohol was employed to prepare C3 chiral building blocks in this work, including (R)-2,3-dichloro-1-propanol (DCP*), (R)-2,3-epoxy-1-propanol (GLD*), and (R)-3-chloro-1-2-propanediol (CPD*). The ee values of the formed C3 chiral building blocks DCP*, CPD*, and glycidol were 98.1, 97.5, and 96.7%, respectively. Moreover, the use of small amount of imidazolium ionic liquid enhanced the yield efficiently due to the increase of solubility of hydrophobic organic substrates in aqueous reaction media, as well as the improvement of affinity and selectivity of CPO to substrate.
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Affiliation(s)
- Yan Liu
- School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, 710062, P.R. China
| | - Yali Wang
- School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, 710062, P.R. China
| | - Yucheng Jiang
- School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, 710062, P.R. China.,Key Laboratory of Macromolecular Science of Shaanxi Province, Shaanxi Normal University, Xi'an, 710062, P.R. China
| | - Mancheng Hu
- School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, 710062, P.R. China.,Key Laboratory of Macromolecular Science of Shaanxi Province, Shaanxi Normal University, Xi'an, 710062, P.R. China
| | - Shuni Li
- School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, 710062, P.R. China.,Key Laboratory of Macromolecular Science of Shaanxi Province, Shaanxi Normal University, Xi'an, 710062, P.R. China
| | - Quanguo Zhai
- School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, 710062, P.R. China.,Key Laboratory of Macromolecular Science of Shaanxi Province, Shaanxi Normal University, Xi'an, 710062, P.R. China
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12
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Schulte B, Rahimi K, Keul H, Demco DE, Walther A, Möller M. Blending of reactive prepolymers to control the morphology and polarity of polyglycidol based microgels. SOFT MATTER 2015; 11:943-953. [PMID: 25515704 DOI: 10.1039/c4sm02116a] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
The compartmentalization of microgels is a challenging task for synthetic polymer chemistry. Although the complexation with low molecular weight compounds or the use of microfluidic techniques offer attractive possibilities for other length scales, it is difficult to implement compartments in the mesoscale range of 10-100 nm. Herein we show how simple blending of reactive prepolymers is suitable to design new microgel morphologies with tailored compartments. We use poly(EEGE)-block-poly(AGE) as crosslinkable, pro-hydrophilic prepolymer in blends with varying amounts of crosslinkable, yet hydrophobic poly(THF-stat-AllylEHO) or inert and hydrophobic polystyrene, and crosslink the allyl functional prepolymer(s) in a thiol-ene click-type reaction after miniemulsification. Our strategy shows how arrested versus free nanophase separation can be used to control easily the morphology and polarity of microgel particles.
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Affiliation(s)
- B Schulte
- DWI - Leibniz Institute for Interactive Materials and Institute of Technical and Macromolecular Chemistry, RWTH Aachen University, Forckenbeckstraße 50, D-52074 Aachen, Germany.
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13
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Gao F, Wang L, Liu Y, Wang S, Jiang Y, Hu M, Li S, Zhai Q. Enzymatic synthesis of (R)-modafinil by chloroperoxidase-catalyzed enantioselective sulfoxidation of 2-(diphenylmethylthio) acetamide. Biochem Eng J 2015. [DOI: 10.1016/j.bej.2014.10.017] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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14
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Bao S, Wu D, Su T, Wu Q, Wang Q. Microgels formed by enzyme-mediated polymerization in reverse micelles with tunable activity and high stability. RSC Adv 2015. [DOI: 10.1039/c5ra02162f] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
This communication describes the preparation of microgels via enzyme-triggered inverse emulsion polymerization, which provides an effective method for immobilizing enzymes with tunable catalytic performance and high stability.
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Affiliation(s)
- Song Bao
- Department of Chemistry
- Shanghai Key Lab of Chemical Assessment and Substainability
- Advanced Research Institute
- Tongji University
- Shanghai 200092
| | - Dongbei Wu
- Department of Chemistry
- Shanghai Key Lab of Chemical Assessment and Substainability
- Advanced Research Institute
- Tongji University
- Shanghai 200092
| | - Teng Su
- Department of Chemistry
- Shanghai Key Lab of Chemical Assessment and Substainability
- Advanced Research Institute
- Tongji University
- Shanghai 200092
| | - Qing Wu
- Department of Chemistry
- Shanghai Key Lab of Chemical Assessment and Substainability
- Advanced Research Institute
- Tongji University
- Shanghai 200092
| | - Qigang Wang
- Department of Chemistry
- Shanghai Key Lab of Chemical Assessment and Substainability
- Advanced Research Institute
- Tongji University
- Shanghai 200092
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15
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Zhang Z, Tang Z, Su T, Li W, Wang Q. Hydrogel-coated enzyme electrodes formed by GOx-mediated polymerization for glucose detecting. RSC Adv 2015. [DOI: 10.1039/c5ra05495h] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
This communication reports the mild fabrication of a hydrogel-coated enzyme electrode for glucose detecting with high sensitivity (35.19 μA mM−1 cm−2) and robust stability.
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Affiliation(s)
- Ziyang Zhang
- Department of Chemistry
- Advanced Research Institute
- Tongji University
- Shanghai
- China
| | - Zhou Tang
- Department of Chemistry
- Advanced Research Institute
- Tongji University
- Shanghai
- China
| | - Teng Su
- Department of Chemistry
- Advanced Research Institute
- Tongji University
- Shanghai
- China
| | - Wenjun Li
- Department of Chemistry
- Advanced Research Institute
- Tongji University
- Shanghai
- China
| | - Qigang Wang
- Department of Chemistry
- Advanced Research Institute
- Tongji University
- Shanghai
- China
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16
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Mao Y, Su T, Wu Q, Liao C, Wang Q. Dual enzymatic formation of hybrid hydrogels with supramolecular-polymeric networks. Chem Commun (Camb) 2014; 50:14429-32. [DOI: 10.1039/c4cc06472k] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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17
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Zhang W, Mao Z, Gao C. Preparation of TAT peptide-modified poly(N-isopropylacrylamide) microgel particles and their cellular uptake, intracellular distribution, and influence on cytoviability in response to temperature change. J Colloid Interface Sci 2014; 434:122-9. [PMID: 25170605 DOI: 10.1016/j.jcis.2014.07.031] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2014] [Revised: 07/22/2014] [Accepted: 07/23/2014] [Indexed: 11/19/2022]
Abstract
Thermo-sensitive microgel particles may exert a swelling force inside cells and influence on cell viability due to their volume transition in response to external temperature change. In this study, cross-linked poly(N-isopropylacrylamide) (PNIPAM) microgel particles with a thermo-responsive volume expansion ability were prepared by precipitation polymerization of NIPAM, poly(ethylene glycol) diacrylate and acrylic acid. To endow the microgel particles with enhanced cellular uptake and visualization, cell penetrating peptide TAT and fluorescent probe were further covalently immobilized. The cellular uptake, intracellular distribution and thermo-responsive cytotoxicity of the microgel particles were studied by co-culture with lung adenocarcinoma (A549) cells. The PNIAPM microgel particles were largely ingested by A549 cells and mainly located in lysosomes. TAT modification enhanced the cellular internalization of particles but did not alter their intracellular distribution. While the PNIPAM microgel particles did not show significant impact on cell viability at 37°C, they caused cytotoxicity to some extent when being cultured at 25°C for 4 h. Doxorubicin loaded PNIPAM microgel particles showed the strongest cytotoxicity when being cultured at 25°C for 4 h, suggesting the combinational effect of intracellular volume expansion and drug release on cells.
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Affiliation(s)
- Wenjing Zhang
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China
| | - Zhengwei Mao
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China.
| | - Changyou Gao
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China
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18
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Yin Y, Jiao S, Lang C, Liu J. A supramolecular microgel glutathione peroxidase mimic with temperature responsive activity. SOFT MATTER 2014; 10:3374-3385. [PMID: 24652520 DOI: 10.1039/c3sm53117a] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Glutathione peroxidase (GPx) protects cells from oxidative damage by scavenging surplus reactive oxygen species (ROS). Commonly, an appropriate amount of ROS acts as a signal molecule in the metabolism. A smart artificial GPx exhibits adjustable catalytic activity, which can potentially reduce the amount of ROS to an appropriate degree and maintain its important physiological functions in metabolism. To construct an optimum and excellent smart artificial GPx, a novel supramolecular microgel artificial GPx (SM-Te) was prepared based on the supramolecular host-guest interaction employing the tellurium-containing guest molecule (ADA-Te-ADA) and the cyclodextrin-containing host block copolymer (poly(N-isopropylacrylamide)-b-[polyacrylamides-co-poly(6-o-(triethylene glycol monoacrylate ether)-β-cyclodextrin)], PPAM-CD) as building blocks. Subsequently, based on these building blocks, SM-Te was constructed and the formation of its self-assembled structure was confirmed by dynamic light scattering, NMR, SEM, TEM, etc. Typically, benefitting from the temperature responsive properties of the PNIPAM scaffold, SM-Te also exhibited similar temperature responsive behaviour. Importantly, the GPx catalytic rates of SM-Te displayed a noticeable temperature responsive characteristic. Moreover, SM-Te exhibited the typical saturation kinetics behaviour of a real enzyme catalyst. It was proved that the changes of the hydrophobic microenvironment and the pore size in the supramolecular microgel network of SM-Te played significant roles in altering the temperature responsive catalytic behaviour. The successful construction of SM-Te not only overcomes the insurmountable disadvantages existing in previous covalent bond crosslinked microgel artificial GPx but also bodes well for the development of novel intelligent antioxidant drugs.
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Affiliation(s)
- Yanzhen Yin
- School of Chemistry and Chemical Engineering, Qinzhou University, No. 89, Xihuan Nanlu, Qinzhou 535000, People's Republic of China.
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