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Yao X, Yao X, Chen X, Yue J, Yang D, Liu N, Nishinari K. Construction of Artemisia sphaerocephala Krasch. Polysaccharide based hydrogel complexed with pullulan and gelatin crosslinked by ferric ions. Food Chem 2022; 373:131567. [PMID: 34802803 DOI: 10.1016/j.foodchem.2021.131567] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2021] [Revised: 10/18/2021] [Accepted: 11/07/2021] [Indexed: 11/16/2022]
Abstract
Artemisia sphaerocephala Krasch. polysaccharide (ASKP) was found to be crosslinked with ferric ions to form hydrogels in the previous study. In this work, it was demonstrated that ASKP-Fe3+ hydrogel complexed with pullulan or gelatin contributed to a significantly enhanced gel strength at 1.5% ASKP, 60 mM Fe2+, pH 4.0, and the mixing ratio of 9: 1. The complexed hydrogels presented a dense semi-interpenetrating network along with the delay of gelation time and the increase of water retention. ASKP based complexes exhibited good compatibility, probably because pullulan and gelatin could be entangled with ASKP chain under hydrogen bonding and electrostatic interaction, respectively. The interaction between ASKP and pullulan or gelatin contributed to the formation of complexed hydrogels with dense network and significantly enhanced gel strength. It is inferred that ASKP would have great potential to be a new gelling material as well as for the ferric ions delivery.
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Affiliation(s)
- Xiaolin Yao
- School of Food and Biological Engineering, Shaanxi University of Science and Technology, Xi'an, Shaanxi 710021, PR China.
| | - Xiaoxue Yao
- Glyn O. Phillips Hydrocolloid Research Centre, School of Bioengineering and Food Science, Hubei University of Technology, Wuhan 430068, PR China
| | - Xiaoyu Chen
- Glyn O. Phillips Hydrocolloid Research Centre, School of Bioengineering and Food Science, Hubei University of Technology, Wuhan 430068, PR China
| | - Jianxiong Yue
- School of Food and Biological Engineering, Shaanxi University of Science and Technology, Xi'an, Shaanxi 710021, PR China
| | - Dan Yang
- School of Food and Biological Engineering, Shaanxi University of Science and Technology, Xi'an, Shaanxi 710021, PR China
| | - Ning Liu
- School of Food and Biological Engineering, Shaanxi University of Science and Technology, Xi'an, Shaanxi 710021, PR China
| | - Katsuyoshi Nishinari
- Glyn O. Phillips Hydrocolloid Research Centre, School of Bioengineering and Food Science, Hubei University of Technology, Wuhan 430068, PR China
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Li W, Cao F, He C, Ohno K, Ngai T. Measuring the Interactions between Protein-Coated Microspheres and Polymer Brushes in Aqueous Solutions. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:8798-8806. [PMID: 29983064 DOI: 10.1021/acs.langmuir.8b01968] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Hydrophilic or zwitterionic polymer-functionalized surfaces have become attractive biomaterials in bioscience and technology due to their excellent protein-resistant ability. Understanding the fundamental interactions between proteins and polymers plays an essential role in the surface design of biomaterials. In this work, we studied the interactions between bovine serum albumin (BSA) and two sorts of polymer brushes including zwitterionic poly(carboxybetaine methacrylate) (PCBMA) and hydrophilic poly[oligo(ethylene glycol) methyl ether methacrylate] (POEGMA) in NaCl aqueous solutions directly with a self-established total internal reflection microscope (TIRM) to provide a better understanding of the underlying nonfouling mechanism of polymers. Our results indicate that both the surface charge and brushes length can affect protein adsorption through electrostatic and steric repulsions, respectively. Both PCBMA- and POEGMA-coated surfaces display negative charge properties due to incomplete coverage and ionic adsorption. As a result, strong electrostatic repulsions between proteins and negatively charged polymer-coated surfaces could contribute to the resistance of protein-coated particles in solutions with low ionic strength (0.1, 0.5, and 1 mM) and disappear in solutions with high ionic strength (10 mM). The measured interaction profiles demonstrate that PCBMA brushes could provide apparent steric forces only at high ionic strength (10 mM), where zwitterionic brushes exhibit a relatively extended conformation with a lack of electrostatic forces between intra- and interpolymers. In contrast, the steric repulsion between proteins and POEGMA brushes appears when particles diffuse at low positions in all salt concentrations (0.1-10 mM) with similar steric decay lengths, which results from the unresponsiveness of POEGMA brushes to the salt stimulus.
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Affiliation(s)
- Wendi Li
- Department of Chemistry , The Chinese University of Hong Kong , Shatin , N.T., Hong Kong SAR, PR China
| | - Feng Cao
- Department of Chemistry , The Chinese University of Hong Kong , Shatin , N.T., Hong Kong SAR, PR China
| | - Chuanxin He
- College of Chemistry Environmental Engineering , Shenzhen University , Shenzhen , Guangdong 518060 , PR China
| | - Kohji Ohno
- Institute for Chemical Research , Kyoto University , Uji , Kyoto 611-0011 , Japan
| | - To Ngai
- Department of Chemistry , The Chinese University of Hong Kong , Shatin , N.T., Hong Kong SAR, PR China
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Teo A, Dimartino S, Lee SJ, Goh KK, Wen J, Oey I, Ko S, Kwak HS. Interfacial structures of whey protein isolate (WPI) and lactoferrin on hydrophobic surfaces in a model system monitored by quartz crystal microbalance with dissipation (QCM-D) and their formation on nanoemulsions. Food Hydrocoll 2016. [DOI: 10.1016/j.foodhyd.2015.12.002] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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Kubiak K, Adamczyk Z, Cieśla M. Fibrinogen adsorption mechanisms at the gold substrate revealed by QCM-D measurements and RSA modeling. Colloids Surf B Biointerfaces 2015; 139:123-31. [PMID: 26705826 DOI: 10.1016/j.colsurfb.2015.11.052] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2015] [Revised: 11/18/2015] [Accepted: 11/26/2015] [Indexed: 11/15/2022]
Abstract
Adsorption kinetics of fibrinogen at a gold substrate at various pHs was thoroughly studied using the QCM-D method. The experimental were interpreted in terms of theoretical calculations performed according to the random sequential adsorption model (RSA). In this way, the hydration functions and water factors of fibrinogen monolayers were quantitatively evaluated at various pHs. It was revealed that for the lower range of fibrinogen coverage the hydration function were considerably lower than previously obtained for the silica sensor [33]. The lower hydration of fibrinogen monolayers on the gold sensor was attributed to its higher roughness. However, for higher fibrinogen coverage the hydration functions for both sensors became identical exhibiting an universal behavior. By using the hydration functions, the fibrinogen adsorption/desorption runs derived from QCM-D measurements were converted to the Γd vs. the time relationships. This allowed to precisely determine the maximum coverage that varied between 1.6mgm(-2) at pH 3.5 and 4.5mgm(-2) at pH 7.4 (for ionic strength of 0.15M). These results agree with theoretical eRSA modeling and previous experimental data derived by using ellipsometry, OWLS and TIRF. Various fibrinogen adsorption mechanisms were revealed by exploiting the maximum coverage data. These results allow one to develop a method for preparing fibrinogen monolayers of well-controlled coverage and molecule orientation.
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Affiliation(s)
- Katarzyna Kubiak
- Jerzy Haber Institute of Catalysis and Surface Chemistry, Polish Academy of Sciences, Niezapominajek 8, 30-239 Cracow, Poland
| | - Zbigniew Adamczyk
- Jerzy Haber Institute of Catalysis and Surface Chemistry, Polish Academy of Sciences, Niezapominajek 8, 30-239 Cracow, Poland.
| | - Michał Cieśla
- M. Smoluchowski Institute of Physics, Jagiellonian University, Łojasiewicza 11, 30-348 Cracow, Poland
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Li ZB, Xiang YH, Zhou XJ, Nie JJ, Peng M, Du BY. Thermo-sensitive poly(DEGMMA-co-MEA) microgels: Synthesis, characterization and interfacial interaction with adsorbed protein layer. CHINESE JOURNAL OF POLYMER SCIENCE 2015. [DOI: 10.1007/s10118-015-1694-z] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Wang Z, Gong X, Ngai T. Measurements of long-range interactions between protein-functionalized surfaces by total internal reflection microscopy. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2015; 31:3101-3107. [PMID: 25719226 DOI: 10.1021/acs.langmuir.5b00090] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Understanding the interaction between protein-functionalized surfaces is an important subject in a variety of protein-related processes, ranging from coatings for biomedical implants to targeted drug carriers and biosensors. In this work, utilizing a total internal reflection microscope (TIRM), we have directly measured the interactions between micron-sized particles decorated with three types of common proteins concanavalin A (ConA), bovine serum albumin (BSA), lysozyme (LYZ), and glass surface coated with soy proteins (SP). Our results show that the protein adsorption greatly affects the charge property of the surfaces, and the interactions between those protein-functionalized surfaces depend on solution pH values. At pH 7.5-10.0, all these three protein-functionalized particles are highly negatively charged, and they move freely above the negatively charged SP-functionalized surface. The net interaction between protein-functionalized surfaces captured by TIRM was found as a long-range, nonspecific double-layer repulsion. When pH was decreased to 5.0, both protein-functionalized surfaces became neutral and double-layer repulsion was greatly reduced, resulting in adhesion of all three protein-functionalized particles to the SP-functionalized surface due to the hydrophobic attraction. The situation is very different at pH = 4.0: BSA-decorated particles, which are highly charged, can move freely above the SP-functionalized surfaces, while ConA- and LYZ-decorated particles can only move restrictively in a limited range. Our results quantify these nonspecific kT-scale interactions between protein-functionalized surfaces, which will enable the design of surfaces for use in biomedical applications and study of biomolecular interactions.
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Affiliation(s)
- Zhaohui Wang
- †Department of Chemistry, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong
| | - Xiangjun Gong
- ‡School of Materials Science and Engineering, South China University of Technology, Guangzhou, China 510640
| | - To Ngai
- †Department of Chemistry, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong
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Teng W, Wang Q, Chen Y, Huang H. Controllably local gene delivery mediated by polyelectrolyte multilayer films assembled from gene-loaded nanopolymersomes and hyaluronic acid. Int J Nanomedicine 2014; 9:5013-24. [PMID: 25378927 PMCID: PMC4218923 DOI: 10.2147/ijn.s70952] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Abstract
To explore a spatiotemporally controllable gene delivery system with high efficiency and safety, polyelectrolyte multilayer (PEM) films were constructed on titanium or quartz substrates via layer-by-layer self-assembly technique by using plasmid deoxyribonucleic acid-loaded lipopolysaccharide–amine nanopolymersomes (pNPs) as polycations and hyaluronic acid (HA) as polyanions. pNPs were chosen because they have high transfection efficiency (>95%) in mesenchymal stem cells (MSCs) and induce significant angiogenesis in zebrafish in conventional bolus transfection. The assembly process of PEM films was confirmed by analyses of quartz crystal microbalance with dissipation, X-ray photoelectron spectroscopy, infrared, contact angle, and zeta potential along with atomic force microscopy observation. Quartz crystal microbalance with dissipation analysis reveals that this film grows in an exponential mode, pNPs are the main contributor to the film mass, and the film mass can be modulated in a relatively wide range (1.0–29 μg/cm2) by adjusting the deposition layer number. Atomic force microscopy observation shows that the assembly leads to the formation of a patterned film with three-dimensional tree-like nanostructure, where the branches are composed of beaded chains (pNP beads are strung on HA molecular chains), and the incorporated pNPs keep structure intact. In vitro release experiment shows that plasmid deoxyribonucleic acid can be gradually released from films over 14 days, and the released plasmid deoxyribonucleic acid exists in a complex form. In vitro cell experiments demonstrate that PEM films can enhance the adhesion and proliferation of MSCs and efficiently transfect MSCs in situ in vitro for at least 4 days. Our results suggest that a (pNPs/HA)n system can mediate efficient transfection in stem cells in a spatially and temporally controllable pattern, highlighting its huge potential in local gene therapy.
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Affiliation(s)
- Wei Teng
- Hospital of Stomatology, Institute of Stomatological Research, Guanghua School of Stomatology, Guangzhou, People's Republic of China
| | - Qinmei Wang
- Key Laboratory on Assisted Circulation, Ministry of Health, Cardiovascular Division, First Affiliated Hospital, Sun Yat-sen University, Guangzhou, People's Republic of China
| | - Ying Chen
- Key Laboratory on Assisted Circulation, Ministry of Health, Cardiovascular Division, First Affiliated Hospital, Sun Yat-sen University, Guangzhou, People's Republic of China
| | - Hongzhang Huang
- Hospital of Stomatology, Institute of Stomatological Research, Guanghua School of Stomatology, Guangzhou, People's Republic of China
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Hellstrand E, Grey M, Ainalem ML, Ankner J, Forsyth VT, Fragneto G, Haertlein M, Dauvergne MT, Nilsson H, Brundin P, Linse S, Nylander T, Sparr E. Adsorption of α-synuclein to supported lipid bilayers: positioning and role of electrostatics. ACS Chem Neurosci 2013; 4:1339-51. [PMID: 23823878 DOI: 10.1021/cn400066t] [Citation(s) in RCA: 71] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
An amyloid form of the protein α-synuclein is the major component of the intraneuronal inclusions called Lewy bodies, which are the neuropathological hallmark of Parkinson's disease (PD). α-Synuclein is known to associate with anionic lipid membranes, and interactions between aggregating α-synuclein and cellular membranes are thought to be important for PD pathology. We have studied the molecular determinants for adsorption of monomeric α-synuclein to planar model lipid membranes composed of zwitterionic phosphatidylcholine alone or in a mixture with anionic phosphatidylserine (relevant for plasma membranes) or anionic cardiolipin (relevant for mitochondrial membranes). We studied the adsorption of the protein to supported bilayers, the position of the protein within and outside the bilayer, and structural changes in the model membranes using two complementary techniques-quartz crystal microbalance with dissipation monitoring, and neutron reflectometry. We found that the interaction and adsorbed conformation depend on membrane charge, protein charge, and electrostatic screening. The results imply that α-synuclein adsorbs in the headgroup region of anionic lipid bilayers with extensions into the bulk but does not penetrate deeply into or across the hydrophobic acyl chain region. The adsorption to anionic bilayers leads to a small perturbation of the acyl chain packing that is independent of anionic headgroup identity. We also explored the effect of changing the area per headgroup in the lipid bilayer by comparing model systems with different degrees of acyl chain saturation. An increase in area per lipid headgroup leads to an increase in the level of α-synuclein adsorption with a reduced water content in the acyl chain layer. In conclusion, the association of α-synuclein to membranes and its adsorbed conformation are of electrostatic origin, combined with van der Waals interactions, but with a very weak correlation to the molecular structure of the anionic lipid headgroup. The perturbation of the acyl chain packing upon monomeric protein adsorption favors association with unsaturated phospholipids preferentially found in the neuronal membrane.
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Affiliation(s)
- Erik Hellstrand
- Biophysical Chemistry, Department
of Chemistry, Lund University, SE-22100
Lund, Sweden
| | - Marie Grey
- Physical Chemistry,
Department of Chemistry, Lund University, SE-22100 Lund, Sweden
| | | | - John Ankner
- Oak Ridge National Laboratory, Spallation Neutron Source,
Oak Ridge, Tennessee 37831, United States
| | - V. Trevor Forsyth
- Institut Laue-Langevin, 6, rue Jules Horowitz, 38042 Grenoble, France
- EPSAM/ISTM, Keele
University, Staffordshire, ST5 5BG, UK
| | - Giovanna Fragneto
- Institut Laue-Langevin, 6, rue Jules Horowitz, 38042 Grenoble, France
| | - Michael Haertlein
- Institut Laue-Langevin, 6, rue Jules Horowitz, 38042 Grenoble, France
| | | | - Hanna Nilsson
- Biophysical Chemistry, Department
of Chemistry, Lund University, SE-22100
Lund, Sweden
| | - Patrik Brundin
- Neuronal Survival Unit, Wallenberg Neuroscience Center, Lund University, BMC B11, 221 84 Lund, Sweden
- Center for Neurodegenerative Science, Van Andel Research Institute, 333 Bostwick Avenue Northeast,
Grand Rapids, Michigan 49503, United States
| | - Sara Linse
- Biochemistry and Structural Biology, Department of
Chemistry, Lund University, SE-22100 Lund,
Sweden
| | - Tommy Nylander
- Physical Chemistry,
Department of Chemistry, Lund University, SE-22100 Lund, Sweden
| | - Emma Sparr
- Physical Chemistry,
Department of Chemistry, Lund University, SE-22100 Lund, Sweden
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