1
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Strohmaier-Nguyen D, Horn C, Baeumner AJ. Membrane-Free Lateral Flow Assay with the Active Control of Fluid Transport for Ultrasensitive Cardiac Biomarker Detection. Anal Chem 2024; 96:7014-7021. [PMID: 38659215 PMCID: PMC11079857 DOI: 10.1021/acs.analchem.4c00142] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2024] [Revised: 04/10/2024] [Accepted: 04/12/2024] [Indexed: 04/26/2024]
Abstract
Membrane-based lateral flow immunoassays (LFAs) have been employed as early point-of-care (POC) testing tools in clinical settings. However, the varying membrane properties, uncontrollable sample transport in LFAs, visual readout, and required large sample volumes have been major limiting factors in realizing needed sensitivity and desirable precise quantification. Addressing these challenges, we designed a membrane-free system in which the desirable three-dimensional (3D) structure of the detection zone is imitated and used a small pump for fluid flow and fluorescence as readout, all the while maintaining a one-step assay protocol. A hydrogel-like protein-polyelectrolyte complex (PPC) within a polyelectrolyte multilayer (PEM) was developed as the test line by complexing polystreptavidin (pSA) with poly(diallyldimethylammonium chloride) (PDDA), which in turn was layered with poly(acrylic acid) (PAA) resulting in a superior 3D streptavidin-rich test line. Since the remainder of the microchannel remains material-free, good flow control is achieved, and with the total volume of 20 μL, 7.5-fold smaller sample volumes can be used in comparison to conventional LFAs. High sensitivity with desirable reproducibility and a 20 min total assay time were achieved for the detection of NT-proBNP in plasma with a dynamic range of 60-9000 pg·mL-1 and a limit of detection of 56 pg·mL-1 using probe antibody-modified fluorescence nanoparticles. While instrument-free visual detection is no longer possible, the developed lateral flow channel platform has the potential to dramatically expand the LFA applicability, as it overcomes the limitations of membrane-based immunoassays, ultimately improving the accuracy and reducing the sample volume so that finger-prick analyses can easily be done in a one-step assay for analytes present at very low concentrations.
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Affiliation(s)
- Dan Strohmaier-Nguyen
- Institute
of Analytical Chemistry, Chemo- and Biosensors, University of Regensburg, 93053 Regensburg, Germany
| | - Carina Horn
- Roche
Diagnostics GmbH, 68305 Mannheim, Germany
| | - Antje J. Baeumner
- Institute
of Analytical Chemistry, Chemo- and Biosensors, University of Regensburg, 93053 Regensburg, Germany
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2
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Dar F, Cohen SR, Mitrea DM, Phillips AH, Nagy G, Leite WC, Stanley CB, Choi JM, Kriwacki RW, Pappu RV. Biomolecular condensates form spatially inhomogeneous network fluids. Nat Commun 2024; 15:3413. [PMID: 38649740 PMCID: PMC11035652 DOI: 10.1038/s41467-024-47602-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2023] [Accepted: 04/05/2024] [Indexed: 04/25/2024] Open
Abstract
The functions of biomolecular condensates are thought to be influenced by their material properties, and these will be determined by the internal organization of molecules within condensates. However, structural characterizations of condensates are challenging, and rarely reported. Here, we deploy a combination of small angle neutron scattering, fluorescence recovery after photobleaching, and coarse-grained molecular dynamics simulations to provide structural descriptions of model condensates that are formed by macromolecules from nucleolar granular components (GCs). We show that these minimal facsimiles of GCs form condensates that are network fluids featuring spatial inhomogeneities across different length scales that reflect the contributions of distinct protein and peptide domains. The network-like inhomogeneous organization is characterized by a coexistence of liquid- and gas-like macromolecular densities that engenders bimodality of internal molecular dynamics. These insights suggest that condensates formed by multivalent proteins share features with network fluids formed by systems such as patchy or hairy colloids.
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Affiliation(s)
- Furqan Dar
- Department of Biomedical Engineering and Center for Biomolecular Condensates, Washington University in St. Louis, St. Louis, MO, 63130, USA
| | - Samuel R Cohen
- Department of Biomedical Engineering and Center for Biomolecular Condensates, Washington University in St. Louis, St. Louis, MO, 63130, USA
- Center of Regenerative Medicine, Washington University in St. Louis, St. Louis, MO, 63130, USA
| | - Diana M Mitrea
- Dewpoint Therapeutics Inc., 451 D Street, Boston, MA, 02210, USA
| | - Aaron H Phillips
- Department of Structural Biology, St. Jude Children's Research Hospital, Memphis, TN, 38105, USA
| | - Gergely Nagy
- Neutron Scattering Division, Oak Ridge National Laboratory, Oak Ridge, TN, 37831, USA
| | - Wellington C Leite
- Neutron Scattering Division, Oak Ridge National Laboratory, Oak Ridge, TN, 37831, USA
| | - Christopher B Stanley
- Computational Sciences and Engineering Division, Oak Ridge National Laboratory, Oak Ridge, TN, 37830, USA
| | - Jeong-Mo Choi
- Department of Chemistry and Chemistry Institute for Functional Materials, Pusan National University, Busan, 46241, Republic of Korea.
| | - Richard W Kriwacki
- Department of Structural Biology, St. Jude Children's Research Hospital, Memphis, TN, 38105, USA.
| | - Rohit V Pappu
- Department of Biomedical Engineering and Center for Biomolecular Condensates, Washington University in St. Louis, St. Louis, MO, 63130, USA.
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3
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Dar F, Cohen SR, Mitrea DM, Phillips AH, Nagy G, Leite WC, Stanley CB, Choi JM, Kriwacki RW, Pappu RV. Biomolecular condensates form spatially inhomogeneous network fluids. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2023.10.07.561338. [PMID: 37873180 PMCID: PMC10592670 DOI: 10.1101/2023.10.07.561338] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2023]
Abstract
The functions of biomolecular condensates are thought to be influenced by their material properties, and these will be determined by the internal organization of molecules within condensates. However, structural characterizations of condensates are challenging, and rarely reported. Here, we deploy a combination of small angle neutron scattering, fluorescence recovery after photobleaching, and coarse-grained molecular dynamics simulations to provide structural descriptions of model condensates that are formed by macromolecules from nucleolar granular components (GCs). We show that these minimal facsimiles of GCs form condensates that are network fluids featuring spatial inhomogeneities across different length scales that reflect the contributions of distinct protein and peptide domains. The network-like inhomogeneous organization is characterized by a coexistence of liquid- and gas-like macromolecular densities that engenders bimodality of internal molecular dynamics. These insights suggest that condensates formed by multivalent proteins share features with network fluids formed by systems such as patchy or hairy colloids.
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4
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Yan JN, Nie B, Zhang ZJ, Gao LY, Lai B, Wang C, Zhang LC, Wu HT. Monovalent Salt and pH-Stimulated Gelation of Scallop ( Patinopecten yessoensis) Male Gonad Hydrolysates/ κ-Carrageenan. Foods 2023; 12:3598. [PMID: 37835251 PMCID: PMC10572707 DOI: 10.3390/foods12193598] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2023] [Revised: 09/13/2023] [Accepted: 09/22/2023] [Indexed: 10/15/2023] Open
Abstract
The gelation of scallop Patinopecten yessoensis male gonad hydrolysates (SMGHs) and κ-carrageenan (KC) subjected to pH (2-8, 3-9) and NaCl/KCl stimuli-response was investigated. SMGHs/KC gels subjected to a NaCl response exhibited an increasing storage modulus G'from 2028.6 to 3418.4 Pa as the pH decreased from pH 8 to 2, with corresponding T23 fluctuating from 966.40 to 365.64 ms. For the KCl-treated group, SMGHs/KC gels showed an even greater G' from 4646.7 to 10996.5 Pa, with T23 fluctuating from 622.2 to 276.98 ms as the pH decreased from 9 to 3. The improved gel strength could be ascribed to the blueshift and redshift of hydroxyl groups and amide I peaks, enhanced enthalpy and peak temperature, and gathered characteristic diffraction peaks from SMGHs, KC, NaCl, and KCl. The CLSM and cryo-SEM images further reflected that SMGHs/KC gels showed more flocculation formation and denser and more homogeneous networks with smaller pore sizes in more acidic domains, especially when subjected to the KCl response. This research gives a theoretical and methodological understanding of the construction of salt- and pH-responsive SMGHs/KC hydrogels as novel functional soft biomaterials applied in food and biological fields.
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Affiliation(s)
- Jia-Nan Yan
- School of Food Science and Technology, Dalian Polytechnic University, Dalian 116034, China; (J.-N.Y.); (B.N.); (Z.-J.Z.); (L.-Y.G.); (B.L.); (C.W.); (L.-C.Z.)
- SKL of Marine Food Processing & Safety Control, National Engineering Research Center of Seafood, Collaborative Innovation Center of Seafood Deep Processing, Dalian Polytechnic University, Dalian 116034, China
| | - Bin Nie
- School of Food Science and Technology, Dalian Polytechnic University, Dalian 116034, China; (J.-N.Y.); (B.N.); (Z.-J.Z.); (L.-Y.G.); (B.L.); (C.W.); (L.-C.Z.)
| | - Zhu-Jun Zhang
- School of Food Science and Technology, Dalian Polytechnic University, Dalian 116034, China; (J.-N.Y.); (B.N.); (Z.-J.Z.); (L.-Y.G.); (B.L.); (C.W.); (L.-C.Z.)
| | - Ling-Yi Gao
- School of Food Science and Technology, Dalian Polytechnic University, Dalian 116034, China; (J.-N.Y.); (B.N.); (Z.-J.Z.); (L.-Y.G.); (B.L.); (C.W.); (L.-C.Z.)
| | - Bin Lai
- School of Food Science and Technology, Dalian Polytechnic University, Dalian 116034, China; (J.-N.Y.); (B.N.); (Z.-J.Z.); (L.-Y.G.); (B.L.); (C.W.); (L.-C.Z.)
- SKL of Marine Food Processing & Safety Control, National Engineering Research Center of Seafood, Collaborative Innovation Center of Seafood Deep Processing, Dalian Polytechnic University, Dalian 116034, China
| | - Ce Wang
- School of Food Science and Technology, Dalian Polytechnic University, Dalian 116034, China; (J.-N.Y.); (B.N.); (Z.-J.Z.); (L.-Y.G.); (B.L.); (C.W.); (L.-C.Z.)
- SKL of Marine Food Processing & Safety Control, National Engineering Research Center of Seafood, Collaborative Innovation Center of Seafood Deep Processing, Dalian Polytechnic University, Dalian 116034, China
| | - Li-Chao Zhang
- School of Food Science and Technology, Dalian Polytechnic University, Dalian 116034, China; (J.-N.Y.); (B.N.); (Z.-J.Z.); (L.-Y.G.); (B.L.); (C.W.); (L.-C.Z.)
- Institutes of Biomedical Sciences, Shanxi University, Taiyuan 030006, China
| | - Hai-Tao Wu
- School of Food Science and Technology, Dalian Polytechnic University, Dalian 116034, China; (J.-N.Y.); (B.N.); (Z.-J.Z.); (L.-Y.G.); (B.L.); (C.W.); (L.-C.Z.)
- SKL of Marine Food Processing & Safety Control, National Engineering Research Center of Seafood, Collaborative Innovation Center of Seafood Deep Processing, Dalian Polytechnic University, Dalian 116034, China
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5
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Atakay M. Monitoring Conformational Changes of Lysozyme–Polyelectrolyte Complexes Using Trapped Ion Mobility-Mass Spectrometry (IM-MS). ANAL LETT 2023. [DOI: 10.1080/00032719.2023.2173768] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/09/2023]
Affiliation(s)
- Mehmet Atakay
- Department of Chemistry, Hacettepe University, Ankara, Turkey
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6
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Vardaxi A, Pispas S. Random cationic copolymers as nanocarriers for ovalbumin. J Drug Deliv Sci Technol 2023. [DOI: 10.1016/j.jddst.2023.104177] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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7
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Archut A, Rolin C, Drusch S, Kastner H. Interaction of sugar beet pectin and pea protein: Impact of neutral sugar side chains and acetyl groups. Food Hydrocoll 2023. [DOI: 10.1016/j.foodhyd.2022.108454] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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8
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Rheology and Gelation of Hyaluronic Acid/Chitosan Coacervates. Biomolecules 2022; 12:biom12121817. [PMID: 36551245 PMCID: PMC9775361 DOI: 10.3390/biom12121817] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2022] [Revised: 11/29/2022] [Accepted: 11/30/2022] [Indexed: 12/12/2022] Open
Abstract
Hyaluronic acid (HA) and chitosan (CHI) are biopolyelectrolytes which are interesting for both the medical and polymer physics communities due to their biocompatibility and semi-flexibility, respectively. In this work, we demonstrate by rheology experiments that the linear viscoelasticity of HA/CHI coacervates depends strongly on the molecular weight of the polymers. Moduli for coacervates were found significantly higher than those of individual HA and CHI physical gels. A remarkable 1.5-fold increase in moduli was noted when catechol-conjugated HA and CHI were used instead. This was attributed to the conversion of coacervates to chemical gels by oxidation of 3,4-dihydroxyphenylalanine (DOPA) groups in HA and CHI to di-DOPA crosslinks. These rheological results put HA/CHI coacervates in the category of strong candidates as injectable tissue scaffolds or medical adhesives.
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9
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Responsive Hyaluronic Acid–Ethylacrylamide Microgels Fabricated Using Microfluidics Technique. Gels 2022; 8:gels8090588. [PMID: 36135299 PMCID: PMC9498840 DOI: 10.3390/gels8090588] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2022] [Revised: 09/08/2022] [Accepted: 09/10/2022] [Indexed: 11/16/2022] Open
Abstract
Volume changes of responsive microgels can probe interactions between polyelectrolytes and species of opposite charges such as peptides and proteins. We have investigated a microfluidics method to synthesize highly responsive, covalently crosslinked, hyaluronic acid microgels for such purposes. Sodium hyaluronate (HA), pre-modified with ethylacrylamide functionalities, was crosslinked in aqueous droplets created with a microfluidic technique. We varied the microgel properties by changing the degree of modification and concentration of HA in the reaction mixture. The degree of modification was determined by 1H NMR. Light microscopy was used to investigate the responsiveness of the microgels to osmotic stress in aqueous saline solutions by simultaneously monitoring individual microgel species in hydrodynamic traps. The permeability of the microgels to FITC-dextrans of molecular weights between 4 and 250 kDa was investigated using confocal laser scanning microscopy. The results show that the microgels were spherical with diameters between 100 and 500 µm and the responsivity tunable by changing the degree of modification and the HA concentration. Microgels were fully permeable to all investigated FITC-dextran probes. The partitioning to the microgel from an aqueous solution decreased with the increasing molecular weight of the probe, which is in qualitative agreement with theories of homogeneous gel networks.
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10
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Bashir Z, Yu W, Xu Z, Li Y, Lai J, Li Y, Cao Y, Xue B. Engineering Bio-Adhesives Based on Protein–Polysaccharide Phase Separation. Int J Mol Sci 2022; 23:ijms23179987. [PMID: 36077375 PMCID: PMC9456018 DOI: 10.3390/ijms23179987] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2022] [Revised: 08/29/2022] [Accepted: 08/30/2022] [Indexed: 12/14/2022] Open
Abstract
Glue-type bio-adhesives are in high demand for many applications, including hemostasis, wound closure, and integration of bioelectronic devices, due to their injectable ability and in situ adhesion. However, most glue-type bio-adhesives cannot be used for short-term tissue adhesion due to their weak instant cohesion. Here, we show a novel glue-type bio-adhesive based on the phase separation of proteins and polysaccharides by functionalizing polysaccharides with dopa. The bio-adhesive exhibits increased adhesion performance and enhanced phase separation behaviors. Because of the cohesion from phase separation and adhesion from dopa, the bio-adhesive shows excellent instant and long-term adhesion performance for both organic and inorganic substrates. The long-term adhesion strength of the bio-glue on wet tissues reached 1.48 MPa (shear strength), while the interfacial toughness reached ~880 J m−2. Due to the unique phase separation behaviors, the bio-glue can even work normally in aqueous environments. At last, the feasibility of this glue-type bio-adhesive in the adhesion of various visceral tissues in vitro was demonstrated to have excellent biocompatibility. Given the convenience of application, biocompatibility, and robust bio-adhesion, we anticipate the bio-glue may find broad biomedical and clinical applications.
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Affiliation(s)
- Zoobia Bashir
- Collaborative Innovation Center of Advanced Microstructures, National Laboratory of Solid State Microstructure, Key Laboratory of Intelligent Optical Sensing and Manipulation, Ministry of Education, Department of Physics, Nanjing University, Nanjing 210093, China
| | - Wenting Yu
- Oujiang Laboratory (Zhejiang Lab for Regenerative Medicine, Vision and Brain Health), Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou 325001, China
| | - Zhengyu Xu
- Collaborative Innovation Center of Advanced Microstructures, National Laboratory of Solid State Microstructure, Key Laboratory of Intelligent Optical Sensing and Manipulation, Ministry of Education, Department of Physics, Nanjing University, Nanjing 210093, China
| | - Yiran Li
- Collaborative Innovation Center of Advanced Microstructures, National Laboratory of Solid State Microstructure, Key Laboratory of Intelligent Optical Sensing and Manipulation, Ministry of Education, Department of Physics, Nanjing University, Nanjing 210093, China
| | - Jiancheng Lai
- Collaborative Innovation Center of Advanced Microstructures, National Laboratory of Solid State Microstructure, Key Laboratory of Intelligent Optical Sensing and Manipulation, Ministry of Education, Department of Physics, Nanjing University, Nanjing 210093, China
| | - Ying Li
- Institute of Advanced Materials and Flexible Electronics (IAMFE), School of Chemistry and Materials Science, Nanjing University of Information Science & Technology, Nanjing 210044, China
- Correspondence: (Y.L.); (B.X.)
| | - Yi Cao
- Collaborative Innovation Center of Advanced Microstructures, National Laboratory of Solid State Microstructure, Key Laboratory of Intelligent Optical Sensing and Manipulation, Ministry of Education, Department of Physics, Nanjing University, Nanjing 210093, China
- Oujiang Laboratory (Zhejiang Lab for Regenerative Medicine, Vision and Brain Health), Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou 325001, China
| | - Bin Xue
- Collaborative Innovation Center of Advanced Microstructures, National Laboratory of Solid State Microstructure, Key Laboratory of Intelligent Optical Sensing and Manipulation, Ministry of Education, Department of Physics, Nanjing University, Nanjing 210093, China
- Correspondence: (Y.L.); (B.X.)
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11
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Meng Y, Xue Q, Chen J, Li Y, Shao Z. Structure, stability, rheology, and texture properties of ε-polylysine-whey protein complexes. J Dairy Sci 2022; 105:3746-3757. [DOI: 10.3168/jds.2021-21219] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2021] [Accepted: 01/22/2022] [Indexed: 01/13/2023]
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12
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Lin K, Jing B, Zhu Y. pH-Dependent complexation and polyelectrolyte chain conformation of polyzwitterion-polycation coacervates in salted water. SOFT MATTER 2021; 17:8937-8949. [PMID: 34549769 DOI: 10.1039/d1sm00880c] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
The phase behavior and chain conformational structure of biphasic polyzwitterion-polyelectrolyte coacervates in salted aqueous solution are investigated with a model weak cationic polyelectrolyte, poly(2-vinylpyridine) (P2VP), whose charge fraction can be effectively tuned by pH. It is observed that increasing the pH leads to the increase of the yielding volume fraction and the water content of dense coacervates formed between net neutral polybetaine and cationic P2VP in contrast to the decrease of critical salt concentration for the onset of coacervation, where the P2VP charge fraction is reduced correspondingly. Surprisingly, a single-molecule fluorescence spectroscopic study suggests that P2VP chains upon coacervation seem to adopt a swollen or an even more expanded conformational structure at higher pH. As the hydrophobicity of P2VP chains is accompanied by a reduced charge fraction by increasing the pH, a strong pH-dependent phase and conformational behaviors suggest the shift of entropic and enthalpic contribution to the underlying thermodynamic energy landscape and chain structural dynamics of polyelectrolyte coacervation involving weak polyelectrolytes in aqueous solution.
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Affiliation(s)
- Kehua Lin
- Department of Chemical Engineering and Materials Science, Wayne State University, Detroit, MI 48202, USA.
| | - Benxin Jing
- Department of Chemical Engineering and Materials Science, Wayne State University, Detroit, MI 48202, USA.
| | - Yingxi Zhu
- Department of Chemical Engineering and Materials Science, Wayne State University, Detroit, MI 48202, USA.
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13
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Holkar A, Toledo J, Srivastava S. Structure of
nanoparticle‐polyelectrolyte
complexes: Effects of polyelectrolyte characteristics and charge ratio. AIChE J 2021. [DOI: 10.1002/aic.17443] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Advait Holkar
- Department of Chemical and Biomolecular Engineering University of California, Los Angeles Los Angeles California USA
| | - Jesse Toledo
- Department of Chemical and Biomolecular Engineering University of California, Los Angeles Los Angeles California USA
| | - Samanvaya Srivastava
- Department of Chemical and Biomolecular Engineering University of California, Los Angeles Los Angeles California USA
- California NanoSystems Institute University of California, Los Angeles Los Angeles California USA
- Center for Biological Physics University of California, Los Angeles Los Angeles California USA
- Institute for Carbon Management University of California, Los Angeles Los Angeles California USA
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14
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Flexible Sample Environments for the Investigation of Soft Matter at the European Spallation Source: Part I—The In Situ SANS/DLS Setup. APPLIED SCIENCES-BASEL 2021. [DOI: 10.3390/app11094089] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
As part of the development of the new European Spallation Source (ESS) in Lund (Sweden), which will provide the most brilliant neutron beams worldwide, it is necessary to provide different sample environments with which the potential of the new source can be exploited as soon as possible from the start of operation. The overarching goal of the project is to reduce the downtimes of the instruments related to changing the sample environment by developing plug and play sample environments for different soft matter samples using the same general carrier platform and also providing full software integration and control by just using unified connectors. In the present article, as a part of this endeavor, the sample environment for in situ SANS and dynamic light scattering measurements is introduced.
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15
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Van der Verren M, Smeets V, Vander Straeten A, Dupont-Gillain C, Debecker DP. Hybrid chemoenzymatic heterogeneous catalyst prepared in one step from zeolite nanocrystals and enzyme-polyelectrolyte complexes. NANOSCALE ADVANCES 2021; 3:1646-1655. [PMID: 36132563 PMCID: PMC9417918 DOI: 10.1039/d0na00834f] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/08/2020] [Revised: 03/25/2021] [Accepted: 01/30/2021] [Indexed: 05/04/2023]
Abstract
The combination of inorganic heterogeneous catalysts and enzymes, in so-called hybrid chemoenzymatic heterogeneous catalysts (HCEHCs), is an attractive strategy to effectively run chemoenzymatic reactions. Yet, the preparation of such bifunctional materials remains challenging because both the inorganic and the biological moieties must be integrated in the same solid, while preserving their intrinsic activity. Combining an enzyme and a zeolite, for example, is complicated because the pores of the zeolite are too small to accommodate the enzyme and a covalent anchorage on the surface is often ineffective. Herein, we developed a new pathway to prepare a nanostructured hybrid catalyst built from glucose oxidase and TS-1 zeolite. Such hybrid material can catalyse the in situ biocatalytic formation of H2O2, which is subsequently used by the zeolite to trigger the epoxidation of allylic alcohol. Starting from an enzymatic solution and a suspension of zeolite nanocrystals, the hybrid catalyst is obtained in one step, using a continuous spray drying method. While enzymes are expectedly unable to resist the conditions used in spray drying (temperature, shear stress, etc.), we leverage on the preparation of "enzyme-polyelectrolyte complexes" (EPCs) to increase the enzyme stability. Interestingly, the use of EPCs also prevents enzyme leaching and appears to stabilize the enzyme against pH changes. We show that the one-pot preparation by spray drying gives access to hybrid chemoenzymatic heterogeneous catalysts with unprecedented performance in the targeted chemoenzymatic reaction. The bifunctional catalyst performs much better than the two catalysts operating as separate entities. We anticipate that this strategy could be used as an adaptable method to prepare other types of multifunctional materials starting from a library of functional nanobuilding blocks and biomolecules.
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Affiliation(s)
- Margot Van der Verren
- Institute of Condensed Matter and Nanosciences, UCLouvain Place Louis Pasteur 1 1348 Louvain-la-Neuve Belgium
| | - Valentin Smeets
- Institute of Condensed Matter and Nanosciences, UCLouvain Place Louis Pasteur 1 1348 Louvain-la-Neuve Belgium
| | - Aurélien Vander Straeten
- Institute of Condensed Matter and Nanosciences, UCLouvain Place Louis Pasteur 1 1348 Louvain-la-Neuve Belgium
| | - Christine Dupont-Gillain
- Institute of Condensed Matter and Nanosciences, UCLouvain Place Louis Pasteur 1 1348 Louvain-la-Neuve Belgium
| | - Damien P Debecker
- Institute of Condensed Matter and Nanosciences, UCLouvain Place Louis Pasteur 1 1348 Louvain-la-Neuve Belgium
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16
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Zhang Q, Jeganathan B, Dong H, Chen L, Vasanthan T. Effect of sodium chloride on the thermodynamic, rheological, and microstructural properties of field pea protein isolate/chitosan complex coacervates. Food Chem 2020; 344:128569. [PMID: 33280960 DOI: 10.1016/j.foodchem.2020.128569] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2020] [Revised: 08/11/2020] [Accepted: 11/02/2020] [Indexed: 01/18/2023]
Abstract
The effect of increasing sodium chloride concentration (cNaCl, 0-0.4 M) on the formation and rheological and microstructural properties of field pea protein isolate (FPPI)/chitosan (Ch) complex coacervates was investigated. The maximum turbidity and zeta potential of FPPI/Ch mixtures consistently decreased with the increasing cNaCl. The tertiary conformation of FPPI was altered to facilitate the aggregation of FPPI/Ch complexes via hydrophobic interactions. Changes in thermodynamic parameters during the titration of FPPI with Ch confirmed the addition of NaCl could cause the inhibition of electrostatic complexation and the induction of non-Coulombic interactions. FPPI/Ch complex coacervates exhibited first enhanced and then weakened viscoelastic properties and an initially tightened and then a loosened microstructure as the cNaCl increased. In summary, appropriate cNaCl favors the formation of FPPI/Ch complex coacervates with improved functionalities via the coordination of promoted hydrophobic interactions and inhibited electrostatic attractions, facilitating the application of this protein ingredient in food development.
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Affiliation(s)
- Qing Zhang
- Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton, Alberta T6G 2P5, Canada; College of Food Science/Institute of Food Processing and Safety, Sichuan Agricultural University, No. 46, Xinkang Road, Ya'an 625014, Sichuan, China.
| | - Brasathe Jeganathan
- Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton, Alberta T6G 2P5, Canada
| | - Hongmin Dong
- Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton, Alberta T6G 2P5, Canada
| | - Lingyun Chen
- Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton, Alberta T6G 2P5, Canada
| | - Thava Vasanthan
- Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton, Alberta T6G 2P5, Canada.
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Yan JN, Nie B, Jiang XY, Han JR, Du YN, Wu HT. Complex coacervation of scallop (Patinopecten yessoensis) male gonad hydrolysates and κ-carrageenan: Effect of NaCl and KCl. Food Res Int 2020; 137:109659. [DOI: 10.1016/j.foodres.2020.109659] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2019] [Revised: 07/31/2020] [Accepted: 08/31/2020] [Indexed: 02/05/2023]
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18
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Impact of polyelectrolytes on lysozyme properties in colloidal dispersions. Colloids Surf B Biointerfaces 2019; 183:110419. [DOI: 10.1016/j.colsurfb.2019.110419] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2018] [Revised: 07/31/2019] [Accepted: 08/01/2019] [Indexed: 11/20/2022]
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19
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Delas T, Mock-Joubert M, Faivre J, Hofmaier M, Sandre O, Dole F, Chapel JP, Crépet A, Trombotto S, Delair T, Schatz C. Effects of Chain Length of Chitosan Oligosaccharides on Solution Properties and Complexation with siRNA. Polymers (Basel) 2019; 11:E1236. [PMID: 31349712 PMCID: PMC6723797 DOI: 10.3390/polym11081236] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2019] [Revised: 07/04/2019] [Accepted: 07/04/2019] [Indexed: 12/13/2022] Open
Abstract
In the context of gene delivery, chitosan has been widely used as a safe and effective polycation to complex DNA, RNA and more recently, siRNA. However, much less attention has been paid to chitosan oligosaccharides (COS) despite their biological properties. This study proposed to carry out a physicochemical study of COS varying in degree of polymerization (DP) from 5 to 50, both from the point of view of the solution properties and the complexing behavior with siRNA. The main parameters studied as a function of DP were the apparent pKa, the solubility versus pH, the binding affinity with siRNA and the colloidal properties of complexes. Some parameters, like the pKa or the binding enthalpy with siRNA, showed a marked transition from DP 5 to DP 13, suggesting that electrostatic properties of COS vary considerably in this range of DP. The colloidal properties of siRNA/COS complexes were affected in a different way by the COS chain length. In particular, COS of relatively high DP (≥50) were required to form small complex particles with good stability.
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Affiliation(s)
- Tim Delas
- Laboratoire de Chimie des Polymères Organiques (LCPO), Univ. Bordeaux, CNRS, Bordeaux INP, UMR 5629, 33600 Pessac, France
| | - Maxime Mock-Joubert
- Ingénierie des Matériaux Polymères (IMP), CNRS UMR 5223, Université Claude Bernard Lyon 1, 69622 Villeurbanne, France
| | - Jimmy Faivre
- Ingénierie des Matériaux Polymères (IMP), CNRS UMR 5223, Université Claude Bernard Lyon 1, 69622 Villeurbanne, France
| | - Mirjam Hofmaier
- Laboratoire de Chimie des Polymères Organiques (LCPO), Univ. Bordeaux, CNRS, Bordeaux INP, UMR 5629, 33600 Pessac, France
| | - Olivier Sandre
- Laboratoire de Chimie des Polymères Organiques (LCPO), Univ. Bordeaux, CNRS, Bordeaux INP, UMR 5629, 33600 Pessac, France
| | - François Dole
- Centre de Recherche Paul Pascal (CRPP), UMR CNRS 5031, Univ. Bordeaux, 33600 Pessac, France
| | - Jean Paul Chapel
- Centre de Recherche Paul Pascal (CRPP), UMR CNRS 5031, Univ. Bordeaux, 33600 Pessac, France
| | - Agnès Crépet
- Ingénierie des Matériaux Polymères (IMP), CNRS UMR 5223, Université Claude Bernard Lyon 1, 69622 Villeurbanne, France
| | - Stéphane Trombotto
- Ingénierie des Matériaux Polymères (IMP), CNRS UMR 5223, Université Claude Bernard Lyon 1, 69622 Villeurbanne, France
| | - Thierry Delair
- Ingénierie des Matériaux Polymères (IMP), CNRS UMR 5223, Université Claude Bernard Lyon 1, 69622 Villeurbanne, France
| | - Christophe Schatz
- Laboratoire de Chimie des Polymères Organiques (LCPO), Univ. Bordeaux, CNRS, Bordeaux INP, UMR 5629, 33600 Pessac, France.
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20
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Gao S, Holkar A, Srivastava S. Protein-Polyelectrolyte Complexes and Micellar Assemblies. Polymers (Basel) 2019; 11:E1097. [PMID: 31261765 PMCID: PMC6680422 DOI: 10.3390/polym11071097] [Citation(s) in RCA: 40] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2019] [Revised: 06/20/2019] [Accepted: 06/24/2019] [Indexed: 12/18/2022] Open
Abstract
In this review, we highlight the recent progress in our understanding of the structure, properties and applications of protein-polyelectrolyte complexes in both bulk and micellar assemblies. Protein-polyelectrolyte complexes form the basis of the genetic code, enable facile protein purification, and have emerged as enterprising candidates for simulating protocellular environments and as efficient enzymatic bioreactors. Such complexes undergo self-assembly in bulk due to a combined influence of electrostatic interactions and entropy gains from counterion release. Diversifying the self-assembly by incorporation of block polyelectrolytes has further enabled fabrication of protein-polyelectrolyte complex micelles that are multifunctional carriers for therapeutic targeted delivery of proteins such as enzymes and antibodies. We discuss research efforts focused on the structure, properties and applications of protein-polyelectrolyte complexes in both bulk and micellar assemblies, along with the influences of amphoteric nature of proteins accompanying patchy distribution of charges leading to unique phenomena including multiple complexation windows and complexation on the wrong side of the isoelectric point.
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Affiliation(s)
- Shang Gao
- Department of Chemical and Biomolecular Engineering, University of California, Los Angeles, Los Angeles, CA 90095, USA.
| | - Advait Holkar
- Department of Chemical and Biomolecular Engineering, University of California, Los Angeles, Los Angeles, CA 90095, USA.
| | - Samanvaya Srivastava
- Department of Chemical and Biomolecular Engineering, University of California, Los Angeles, Los Angeles, CA 90095, USA.
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21
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Wang X, Zheng K, Si Y, Guo X, Xu Y. Protein⁻Polyelectrolyte Interaction: Thermodynamic Analysis Based on the Titration Method †. Polymers (Basel) 2019; 11:E82. [PMID: 30960066 PMCID: PMC6402006 DOI: 10.3390/polym11010082] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2018] [Revised: 12/26/2018] [Accepted: 01/02/2019] [Indexed: 01/05/2023] Open
Abstract
This review discussed the mechanisms including theories and binding stages concerning the protein⁻polyelectrolyte (PE) interaction, as well as the applications for both complexation and coacervation states of protein⁻PE pairs. In particular, this review focused on the applications of titration techniques, that is, turbidimetric titration and isothermal titration calorimetry (ITC), in understanding the protein⁻PE binding process. To be specific, by providing thermodynamic information such as pHc, pHφ, binding constant, entropy, and enthalpy change, titration techniques could shed light on the binding affinity, binding stoichiometry, and driving force of the protein⁻PE interaction, which significantly guide the applications by utilization of these interactions. Recent reports concerning interactions between proteins and different types of polyelectrolytes, that is, linear polyelectrolytes and polyelectrolyte modified nanoparticles, are summarized with their binding differences systematically discussed and compared based on the two major titration techniques. We believe this short review could provide valuable insight in the understanding of the structure⁻property relationship and the design of applied biomedical PE-based systems with optimal performance.
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Affiliation(s)
- Xiaohan Wang
- State-Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China.
| | - Kai Zheng
- State-Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China.
| | - Yi Si
- Institute of Vascular Surgery, Fudan University, 180 Fenglin road, Shanghai 200032, China.
| | - Xuhong Guo
- State-Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China.
- International Joint Research Center of Green Energy Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China.
- Engineering Research Center of Xinjiang Bingtuan of Materials Chemical Engineering, Shihezi University, Xinjiang 832000, China.
| | - Yisheng Xu
- State-Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China.
- International Joint Research Center of Green Energy Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China.
- Engineering Research Center of Xinjiang Bingtuan of Materials Chemical Engineering, Shihezi University, Xinjiang 832000, China.
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22
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Coacervates and coaggregates: Liquid–liquid and liquid–solid phase transitions by native and unfolded protein complexes. Int J Biol Macromol 2018; 120:10-18. [DOI: 10.1016/j.ijbiomac.2018.08.063] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2018] [Revised: 08/11/2018] [Accepted: 08/13/2018] [Indexed: 11/23/2022]
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23
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Rathee VS, Sidky H, Sikora BJ, Whitmer JK. Role of Associative Charging in the Entropy-Energy Balance of Polyelectrolyte Complexes. J Am Chem Soc 2018; 140:15319-15328. [PMID: 30351015 DOI: 10.1021/jacs.8b08649] [Citation(s) in RCA: 60] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Polyelectrolytes may be classified into two primary categories (strong and weak) depending on how their charge state responds to the local environment. Both of these find use in many applications, including drug delivery, gene therapy, layer-by-layer films, and fabrication of ion filtration membranes. The mechanism of polyelectrolyte complexation is, however, still not completely understood, though experimental investigations suggest that entropy gain due to release of counterions is the key driving force for strong polyelectrolyte complexation. Here we perform a comprehensive thermodynamic investigation through coarse-grained molecular simulations permitting us to calculate the free energy of complex formation. Importantly, our expanded-ensemble methods permit the explicit separation of energetic and entropic contributions to the free energy. Our investigations indicate that entropic contributions indeed dominate the free energy of complex formation for strong polyelectrolytes, but are less important than energetic contributions when weak electrostatic coupling or weak polyelectrolytes are present. Our results provide a new view of the free energy of polyelectrolyte complex formation driven by polymer association, which should also arise in systems with large charge spacings or bulky counterions, both of which act to weaken ion-polymer binding.
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Affiliation(s)
- Vikramjit S Rathee
- Department of Chemical and Biomolecular Engineering , University of Notre Dame , Notre Dame , Indiana 46556 , United States
| | - Hythem Sidky
- Department of Chemical and Biomolecular Engineering , University of Notre Dame , Notre Dame , Indiana 46556 , United States
| | - Benjamin J Sikora
- Department of Chemical and Biomolecular Engineering , University of Notre Dame , Notre Dame , Indiana 46556 , United States
| | - Jonathan K Whitmer
- Department of Chemical and Biomolecular Engineering , University of Notre Dame , Notre Dame , Indiana 46556 , United States
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24
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Désert S, Lavie P, Permingeat P, Klimko S, Gautrot S. Automatic beam stop changer device. JOURNAL OF NEUTRON RESEARCH 2018. [DOI: 10.3233/jnr-180062] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Affiliation(s)
- S. Désert
- LLB, CEA, CNRS, Université Paris-Saclay, 91191 Gif-sur-Yvette, France. E-mail:
| | - P. Lavie
- LLB, CEA, CNRS, Université Paris-Saclay, 91191 Gif-sur-Yvette, France. E-mail:
| | - P. Permingeat
- LLB, CEA, CNRS, Université Paris-Saclay, 91191 Gif-sur-Yvette, France. E-mail:
| | - S. Klimko
- LLB, CEA, CNRS, Université Paris-Saclay, 91191 Gif-sur-Yvette, France. E-mail:
| | - S. Gautrot
- LLB, CEA, CNRS, Université Paris-Saclay, 91191 Gif-sur-Yvette, France. E-mail:
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25
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Fares HM, Ghoussoub YE, Delgado JD, Fu J, Urban VS, Schlenoff JB. Scattering Neutrons along the Polyelectrolyte Complex/Coacervate Continuum. Macromolecules 2018. [DOI: 10.1021/acs.macromol.8b00699] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Hadi M. Fares
- Department of Chemistry and Biochemistry, The Florida State University, Tallahassee, Florida 32306-4390, United States
| | - Yara E. Ghoussoub
- Department of Chemistry and Biochemistry, The Florida State University, Tallahassee, Florida 32306-4390, United States
| | - Jose D. Delgado
- Department of Chemistry and Biochemistry, The Florida State University, Tallahassee, Florida 32306-4390, United States
| | - Jingcheng Fu
- Department of Chemistry and Biochemistry, The Florida State University, Tallahassee, Florida 32306-4390, United States
| | - Volker S. Urban
- Center for Structural Molecular Biology, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Joseph B. Schlenoff
- Department of Chemistry and Biochemistry, The Florida State University, Tallahassee, Florida 32306-4390, United States
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26
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Jiang Y, Fay JM, Poon CD, Vinod N, Zhao Y, Bullock K, Qin S, Manickam DS, Yi X, Banks WA, Kabanov AV. Nanoformulation of Brain-Derived Neurotrophic Factor with Target Receptor-Triggered-Release in the Central Nervous System. ADVANCED FUNCTIONAL MATERIALS 2018; 28:1703982. [PMID: 29785179 PMCID: PMC5958903 DOI: 10.1002/adfm.201703982] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Brain-derived neurotrophic factor (BDNF) is identified as a potent neuroprotective and neuroregenerative agent for many neurological diseases. Regrettably, its delivery to the brain is hampered by poor serum stability and rapid brain clearance. Here, a novel nanoformulation is reported composed of a bio-compatible polymer, poly(ethylene glycol)-b-poly(L-glutamic acid) (PEG-PLE), that hosts the BDNF molecule in a nanoscale complex, termed here Nano-BDNF. Upon simple mixture, Nano-BDNF spontaneously forms uniform spherical particles with a core-shell structure. Molecular dynamics simulations suggest that binding between BDNF and PEG-PLE is mediated through electrostatic coupling as well as transient hydrogen bonding. The formation of Nano-BDNF complex stabilizes BDNF and protects it from nonspecific binding with common proteins in the body fluid, while allowing it to associate with its receptors. Following intranasal administration, the nanoformulation improves BDNF delivery throughout the brain and displays a more preferable regional distribution pattern than the native protein. Furthermore, intranasally delivered Nano-BDNF results in superior neuroprotective effects in the mouse brain with lipopolysaccharides-induced inflammation, indicating promise for further evaluation of this agent for the therapy of neurologic diseases.
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Affiliation(s)
| | - James M. Fay
- Center for Nanotechnology in Drug Delivery, Eshelman School of Pharmacy, University of North Carolina, Chapel Hill, NC 27599-7362, USA
- Department of Biochemistry and Biophysics, School of Medicine, University of North Carolina, Chapel Hill, NC 27599-7260, USA
| | - Chi-Duen Poon
- Research Computer Center, University of North Carolina, Chapel Hill, NC 27599, USA
| | - Natasha Vinod
- Center for Nanotechnology in Drug Delivery, Eshelman School of Pharmacy, University of North Carolina, Chapel Hill, NC 27599-7362, USA
- Joint UNC/NC State Department of Biomedical Engineering, University of North Carolina, Chapel Hill, NC 27599-7575, USA
| | - Yuling Zhao
- Division of Pharmacoengineering and Molecular Pharmaceutics, Eshelman School of Pharmacy, University of North Carolina, Chapel Hill, NC 27599-7362, USA
- Center for Nanotechnology in Drug Delivery, Eshelman School of Pharmacy, University of North Carolina, Chapel Hill, NC 27599-7362, USA
| | - Kristin Bullock
- Geriatric Research Education and Clinical Center, Veterans Affairs Puget Sound Health Care System, Seattle, WA 98108, USA
- Division of Gerontology and Geriatric Medicine, Department of Medicine, University of Washington School of Medicine, Seattle, WA 98108, USA
| | - Si Qin
- Division of Pharmacoengineering and Molecular Pharmaceutics, Eshelman School of Pharmacy, University of North Carolina, Chapel Hill, NC 27599-7362, USA
- Center for Nanotechnology in Drug Delivery, Eshelman School of Pharmacy, University of North Carolina, Chapel Hill, NC 27599-7362, USA
| | | | - Xiang Yi
- Division of Pharmacoengineering and Molecular Pharmaceutics, Eshelman School of Pharmacy, University of North Carolina, Chapel Hill, NC 27599-7362, USA
- Center for Nanotechnology in Drug Delivery, Eshelman School of Pharmacy, University of North Carolina, Chapel Hill, NC 27599-7362, USA
| | - William A. Banks
- Geriatric Research Education and Clinical Center, Veterans Affairs Puget Sound Health Care System, Seattle, WA 98108, USA
- Division of Gerontology and Geriatric Medicine, Department of Medicine, University of Washington School of Medicine, Seattle, WA 98108, USA
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27
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Papagiannopoulos A, Meristoudi A, Pispas S, Keiderling U. Thermal response of self-organization in an amphiphilic triblock polyelectrolyte and the influence of the globular protein lysozyme. Eur Polym J 2018. [DOI: 10.1016/j.eurpolymj.2017.12.005] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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28
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Andersson M, Hansson P. Binding of Lysozyme to Spherical Poly(styrenesulfonate) Gels. Gels 2018; 4:E9. [PMID: 30674786 PMCID: PMC6318605 DOI: 10.3390/gels4010009] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2017] [Revised: 12/30/2017] [Accepted: 01/10/2018] [Indexed: 11/16/2022] Open
Abstract
Polyelectrolyte gels are useful as carriers of proteins and other biomacromolecules in, e.g., drug delivery. The rational design of such systems requires knowledge about how the binding and release are affected by electrostatic and hydrophobic interactions between the components. To this end we have investigated the uptake of lysozyme by weakly crosslinked spherical poly(styrenesulfonate) (PSS) microgels and macrogels by means of micromanipulator assisted light microscopy and small angle X-ray scattering (SAXS) in an aqueous environment. The results show that the binding process is an order of magnitude slower than for cytochrome c and for lysozyme binding to sodium polyacrylate gels under the same conditions. This is attributed to the formation of very dense protein-rich shells in the outer layers of the microgels with low permeability to the protein. The shells in macrogels contain 60 wt % water and nearly charge stoichiometric amounts of lysozyme and PSS in the form of dense complexes of radius 8 nm comprising 30⁻60 lysozyme molecules. With support from kinetic modelling results we propose that the rate of protein binding and the relaxation rate of the microgel are controlled by the protein mass transport through the shell, which is strongly affected by hydrophobic and electrostatic interactions. The mechanism explains, in turn, an observed dependence of the diffusion rate on the apparent degree of crosslinking of the networks.
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Affiliation(s)
- Martin Andersson
- Department of Pharmacy, Uppsala University, Box 580, SE-75123 Uppsala, Sweden.
| | - Per Hansson
- Department of Pharmacy, Uppsala University, Box 580, SE-75123 Uppsala, Sweden.
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29
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Vander Straeten A, Bratek-Skicki A, Germain L, D'Haese C, Eloy P, Fustin CA, Dupont-Gillain C. Protein-polyelectrolyte complexes to improve the biological activity of proteins in layer-by-layer assemblies. NANOSCALE 2017; 9:17186-17192. [PMID: 29095455 DOI: 10.1039/c7nr04345g] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
A standard method of protein immobilization is proposed, based on the use of protein-polyelectrolyte complexes (PPCs) as building blocks for layer-by-layer assembly. Thicker multilayers, with a higher polyelectrolyte fraction, are obtained with PPCs compared to single protein molecules. Biological activity is not only maintained, but specific activity is also higher, as demonstrated for lysozyme-poly(styrene sulfonate) complexes. This is attributed to the more hydrated state of the assemblies. This new method of protein immobilization opens up perspectives for biotechnology and biomedical applications.
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Affiliation(s)
- A Vander Straeten
- Institute of Condensed Matter and Nanosciences, Université catholique de Louvain, Place Louis Pasteur, 1 bte L4.01.10, B-1348 Louvain-la-Neuve, Belgium.
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30
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Nanoparticulation of bovine serum albumin and poly-d-lysine through complex coacervation and encapsulation of curcumin. Colloids Surf B Biointerfaces 2017; 159:759-769. [DOI: 10.1016/j.colsurfb.2017.08.047] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2016] [Revised: 07/29/2017] [Accepted: 08/25/2017] [Indexed: 12/19/2022]
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31
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Papagiannopoulos A, Vlassi E, Pispas S, Jafta CJ. Tuning the solution organization of cationic polymers through interactions with bovine serum albumin. Phys Chem Chem Phys 2017; 19:18471-18480. [PMID: 28681870 DOI: 10.1039/c7cp02704d] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The interactions of bovine serum albumin (BSA) with aggregates of cationic polymers, i.e. quaternized poly(chloromethyl styrene) chains (QIm-PCMS), in aqueous solutions are investigated using small angle neutron scattering on length scales relevant to the size of BSA. The arrangement of the macromolecular chains within their aggregates is consistent with a blob description of overlapping chains that contain hydrophobic domains. The local conformations depend on the salt content as in typical linear polyelectrolytes. Although the hydrophobic content of the cationic polymers does not cause measurable local morphology differences, the interactions with BSA are enhanced in the case of the not fully quaternized polymer. The secondary structure of BSA is critically compromised by the interaction with the quaternized polymers as the signature of the alpha helix conformation is lost. The complexation with BSA and the resulting enhancement of interchain associations on higher length scales are verified using dynamic light scattering experiments. This study demonstrates the ability to tune the polyelectrolyte/protein interactions and polyelectrolyte chain-chain associations by modifying the hydrophobic content of the polyelectrolytes.
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Affiliation(s)
- Aristeidis Papagiannopoulos
- Theoretical and Physical Chemistry Institute, National Hellenic Research Foundation, 48 Vassileos Constantinou Avenue, 11635 Athens, Greece.
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32
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Lounis FM, Chamieh J, Leclercq L, Gonzalez P, Cottet H. The Effect of Molar Mass and Charge Density on the Formation of Complexes between Oppositely Charged Polyelectrolytes. Polymers (Basel) 2017; 9:polym9020050. [PMID: 30970728 PMCID: PMC6432040 DOI: 10.3390/polym9020050] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2016] [Revised: 01/11/2017] [Accepted: 01/19/2017] [Indexed: 12/17/2022] Open
Abstract
The interactions between model polyanions and polycations have been studied using frontal continuous capillary electrophoresis (FACCE) which allows the determination of binding stoichiometry and binding constant of the formed polyelectrolyte complex (PEC). In this work, the effect of the poly(l-lysine) (PLL) molar mass on the interaction with statistical copolymers of acrylamide and 2-acrylamido-2-methyl-1-propanesulfonate (PAMAMPS) has been systematically investigated for different PAMAMPS chemical charge densities (15% and 100%) and different ionic strengths. The study of the ionic strength dependence of the binding constant allowed the determination of the total number of released counter-ions during the formation of the PEC, which can be compared to the total number of counter-ions initially condensed on the individual polyelectrolyte partners before the association. Interestingly, this fraction of released counter-ions, which was strongly dependent on the PLL molar mass, was almost independent of the PAMAMPS charge density. These findings are useful to predict the binding constant according to the molar mass and charge density of the polyelectrolyte partners.
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Affiliation(s)
- Feriel Meriem Lounis
- Institut des Biomolécules Max Mousseron, IBMM, UMR 5247 CNRS, Université de Montpellier, Ecole Nationale Supérieure de Chimie de Montpellier, Place Eugène Bataillon, CC 1706, 34095 Montpellier CEDEX 5, France.
| | - Joseph Chamieh
- Institut des Biomolécules Max Mousseron, IBMM, UMR 5247 CNRS, Université de Montpellier, Ecole Nationale Supérieure de Chimie de Montpellier, Place Eugène Bataillon, CC 1706, 34095 Montpellier CEDEX 5, France.
| | - Laurent Leclercq
- Institut des Biomolécules Max Mousseron, IBMM, UMR 5247 CNRS, Université de Montpellier, Ecole Nationale Supérieure de Chimie de Montpellier, Place Eugène Bataillon, CC 1706, 34095 Montpellier CEDEX 5, France.
| | - Philippe Gonzalez
- Institut des Biomolécules Max Mousseron, IBMM, UMR 5247 CNRS, Université de Montpellier, Ecole Nationale Supérieure de Chimie de Montpellier, Place Eugène Bataillon, CC 1706, 34095 Montpellier CEDEX 5, France.
| | - Hervé Cottet
- Institut des Biomolécules Max Mousseron, IBMM, UMR 5247 CNRS, Université de Montpellier, Ecole Nationale Supérieure de Chimie de Montpellier, Place Eugène Bataillon, CC 1706, 34095 Montpellier CEDEX 5, France.
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33
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Shi L, Carn F, Boué F, Buhler E. Role of the ratio of biopolyelectrolyte persistence length to nanoparticle size in the structural tuning of electrostatic complexes. Phys Rev E 2016; 94:032504. [PMID: 27739849 DOI: 10.1103/physreve.94.032504] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2015] [Indexed: 01/01/2023]
Abstract
Aggregation of nanoparticles of given size R induced by addition of a polymer strongly depends on its degree of rigidity. This is shown here on a large variety of silica nanoparticle self-assemblies obtained by electrostatic complexation with carefully selected oppositely charged biopolyelectrolytes of different rigidity. The effective rigidity is quantified by the total persistence length L_{T} representing the sum of the intrinsic (L_{p}) and electrostatic (L_{e}) polyelectrolyte persistence length, which depends on the screening, i.e., on ionic strength due to counterions and external salt concentrations. We experimentally show that the ratio L_{T}/R is the main tuning parameter that controls the fractal dimension D_{f} of the nanoparticles' self-assemblies, which is determined using small-angle neutron scattering: (i) For L_{T}/R<0.3 (obtained with flexible poly-l-lysine in the presence of an excess of salt), chain flexibility promotes easy wrapping around nanoparticles in excess, hence ramified structures with D_{f}∼2. (ii) For 0.3<L_{T}/R≤1 (semiflexible chitosan or hyaluronan complexes), chain stiffness promotes the formation of one-dimensional nanorods (in excess of nanoparticles), in good agreement with computer simulations. (iii) For L_{T}/R>1,L_{e} is strongly increased due to the absence of salt and repulsions between nanoparticles cannot be compensated for by the polyelectrolyte wrapping, which allows a spacing between nanoparticles and the formation of one-dimensional pearl necklace complexes. (iv) Finally, electrostatic screening, i.e., ionic strength, turned out to be a reliable way of controlling D_{f} and the phase diagram behavior. It finely tunes the short-range interparticle potential, resulting in larger fractal dimensions at higher ionic strength.
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Affiliation(s)
- Li Shi
- Matière et Systèmes Complexes (MSC) Laboratory, UMR CNRS 7057, University Paris Diderot-Paris 7, Sorbonne Paris Cité, Bâtiment Condorcet, 75205 Paris cedex 13, France.,Laboratoire Léon Brillouin, UMR 12 CEA-CNRS, CEA Saclay, 91191 Gif-sur-Yvette, France
| | - Florent Carn
- Matière et Systèmes Complexes (MSC) Laboratory, UMR CNRS 7057, University Paris Diderot-Paris 7, Sorbonne Paris Cité, Bâtiment Condorcet, 75205 Paris cedex 13, France
| | - François Boué
- Laboratoire Léon Brillouin, UMR 12 CEA-CNRS, CEA Saclay, 91191 Gif-sur-Yvette, France.,GMPA, UMR INRA 782, 1 avenue Lucien Brétignières, 78850 Thiverval-Grignon, France
| | - Eric Buhler
- Matière et Systèmes Complexes (MSC) Laboratory, UMR CNRS 7057, University Paris Diderot-Paris 7, Sorbonne Paris Cité, Bâtiment Condorcet, 75205 Paris cedex 13, France.,Laboratoire Léon Brillouin, UMR 12 CEA-CNRS, CEA Saclay, 91191 Gif-sur-Yvette, France
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Papagiannopoulos A, Meristoudi A, Pispas S, Keiderling U. Thermoresponsive behavior of micellar aggregates from end-functionalized PnBA-b-PNIPAM-COOH block copolymers and their complexes with lysozyme. SOFT MATTER 2016; 12:6547-6556. [PMID: 27426110 DOI: 10.1039/c6sm00976j] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The temperature response of micellar aggregates of poly(n-butyl acrylate)-b-poly(N-isopropylacrylamide)-carboxylic acid (PnBA-b-PNIPAM-COOH) end-functionalized diblock copolymers in aqueous solutions is investigated by small angle neutron scattering and light scattering techniques. The particular micellar aggregates present -COOH groups at their surface due to the molecular architecture of the block copolymer chains. Above the critical solution temperature micellar aggregation depends on the initial solution concentration, while at the highest polymer content intermicellar correlations are observed as a hard-sphere interaction intensity peak. Addition of lysozyme induces this morphological transition even at low concentrations. The scattering profiles are consistent with lysozyme accumulating in the vicinity of the micellar cores, a finding that is supported by measurements in lysozyme contrast matched solvent. Upon temperature increase negatively charged units are exposed to the surface of the aggregates during thermal transition which is a stabilizing force against the phase separating coil-to-globule transition of poly(N-isopropylacrylamide) (PNIPAM).
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Wu FG, Jiang YW, Chen Z, Yu ZW. Folding Behaviors of Protein (Lysozyme) Confined in Polyelectrolyte Complex Micelle. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2016; 32:3655-3664. [PMID: 27022665 DOI: 10.1021/acs.langmuir.6b00235] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
The folding/unfolding behavior of proteins (enzymes) in confined space is important for their properties and functions, but such a behavior remains largely unexplored. In this article, we reported our finding that lysozyme and a double hydrophilic block copolymer, methoxypoly(ethylene glycol)5K-block-poly(l-aspartic acid sodium salt)10 (mPEG(5K)-b-PLD10), can form a polyelectrolyte complex micelle with a particle size of ∼30 nm, as verified by dynamic light scattering and transmission electron microscopy. The unfolding and refolding behaviors of lysozyme molecules in the presence of the copolymer were studied by microcalorimetry and circular dichroism spectroscopy. Upon complex formation with mPEG(5K)-b-PLD10, lysozyme changed from its initial native state to a new partially unfolded state. Compared with its native state, this copolymer-complexed new folding state of lysozyme has different secondary and tertiary structures, a decreased thermostability, and significantly altered unfolding/refolding behaviors. It was found that the native lysozyme exhibited reversible unfolding and refolding upon heating and subsequent cooling, while lysozyme in the new folding state (complexed with the oppositely charged PLD segments of the polymer) could unfold upon heating but could not refold upon subsequent cooling. By employing the heating-cooling-reheating procedure, the prevention of complex formation between lysozyme and polymer due to the salt screening effect was observed, and the resulting uncomplexed lysozyme regained its proper unfolding and refolding abilities upon heating and subsequent cooling. Besides, we also pointed out the important role the length of the PLD segment played during the formation of micelles and the monodispersity of the formed micelles. Furthermore, the lysozyme-mPEG(5K)-b-PLD10 mixtures prepared in this work were all transparent, without the formation of large aggregates or precipitates in solution as frequently observed in other protein-polyelectrolyte systems. Hence, the present protein-PEGylated poly(amino acid) mixture provides an ideal water-soluble model system to study the important role of electrostatic interaction in the complexation between proteins and polymers, leading to important new knowledge on the protein-polymer interactions. Moreover, the polyelectrolyte complex micelle formed between protein and PEGylated polymer may provide a good drug delivery vehicle for therapeutic proteins.
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Affiliation(s)
- Fu-Gen Wu
- Key Laboratory of Bioorganic Phosphorous Chemistry and Chemical Biology (Ministry of Education), Department of Chemistry, Tsinghua University , Beijing 100084, P. R. China
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University , Nanjing 210096, China
| | - Yao-Wen Jiang
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University , Nanjing 210096, China
| | - Zhan Chen
- Department of Chemistry, University of Michigan , 930 North University Avenue, Ann Arbor, Michigan 48109, United States
| | - Zhi-Wu Yu
- Key Laboratory of Bioorganic Phosphorous Chemistry and Chemical Biology (Ministry of Education), Department of Chemistry, Tsinghua University , Beijing 100084, P. R. China
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Fuenzalida JP, Nareddy PK, Moreno-Villoslada I, Moerschbacher BM, Swamy MJ, Pan S, Ostermeier M, Goycoolea FM. On the role of alginate structure in complexing with lysozyme and application for enzyme delivery. Food Hydrocoll 2016. [DOI: 10.1016/j.foodhyd.2015.04.017] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Wu FG, Jiang YW, Sun HY, Luo JJ, Yu ZW. Complexation of Lysozyme with Sodium Poly(styrenesulfonate) via the Two-State and Non-Two-State Unfoldings of Lysozyme. J Phys Chem B 2015; 119:14382-92. [DOI: 10.1021/acs.jpcb.5b07277] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Fu-Gen Wu
- Key
Laboratory of Bioorganic Phosphorous Chemistry and Chemical Biology
(Ministry of Education), Department of Chemistry, Tsinghua University, Beijing 100084, People’s Republic of China
- State
Key Laboratory of Bioelectronics, School of Biological Science and
Medical Engineering, Southeast University, Nanjing 210096, People’s Republic of China
| | - Yao-Wen Jiang
- State
Key Laboratory of Bioelectronics, School of Biological Science and
Medical Engineering, Southeast University, Nanjing 210096, People’s Republic of China
| | - Hai-Yuan Sun
- Key
Laboratory of Bioorganic Phosphorous Chemistry and Chemical Biology
(Ministry of Education), Department of Chemistry, Tsinghua University, Beijing 100084, People’s Republic of China
| | - Jun-Jie Luo
- Key
Laboratory of Bioorganic Phosphorous Chemistry and Chemical Biology
(Ministry of Education), Department of Chemistry, Tsinghua University, Beijing 100084, People’s Republic of China
| | - Zhi-Wu Yu
- Key
Laboratory of Bioorganic Phosphorous Chemistry and Chemical Biology
(Ministry of Education), Department of Chemistry, Tsinghua University, Beijing 100084, People’s Republic of China
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Milyaeva OY, Campbell RA, Lin SY, Loglio G, Miller R, Tihonov MM, Varga I, Volkova AV, Noskov BA. Synergetic effect of sodium polystyrene sulfonate and guanidine hydrochloride on the surface properties of lysozyme solutions. RSC Adv 2015. [DOI: 10.1039/c4ra14330b] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A study of the dilational surface viscoelastic properties of mixed solutions of lysozyme and denaturants allows us to characterize the changes of protein tertiary structure in the surface layer upon adsorption at the liquid–gas interface.
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Affiliation(s)
- Olga Yu Milyaeva
- Department of Colloid Chemistry
- St. Petersburg State University
- 198504 St. Petersburg
- Russia
| | | | - Shi-Yow Lin
- National Taiwan University of Science and Technology
- Chemical Engineering Department
- Taipei 106
- Taiwan
| | - Giuseppe Loglio
- Dipartimento di Chimica Organica
- Universita degli Studi di Firenze
- Firenze
- Italy
| | - Reinhard Miller
- MPI für Kolloid-und Grenzflächenforschung
- D-14424 Golm
- Germany
| | - Michail M. Tihonov
- Department of Colloid Chemistry
- St. Petersburg State University
- 198504 St. Petersburg
- Russia
| | - Imre Varga
- Institute of Chemistry
- Eötvös Lorand University
- Budapest 112
- Hungary
| | - Anna V. Volkova
- Department of Colloid Chemistry
- St. Petersburg State University
- 198504 St. Petersburg
- Russia
| | - Boris A. Noskov
- Department of Colloid Chemistry
- St. Petersburg State University
- 198504 St. Petersburg
- Russia
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Martin N, Ruchmann J, Tribet C. Prevention of aggregation and renaturation of carbonic anhydrase via weak association with octadecyl- or azobenzene-modified poly(acrylate) derivatives. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2014; 31:338-349. [PMID: 25495869 DOI: 10.1021/la503643q] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
The prevention of aggregation during renaturation of urea-denatured carbonic anhydrase B (CAB) via hydrophobic and Coulomb association with anionic polymers was studied in mixed solutions of CAB and amphiphilic poly(acrylate) copolymers. The polymers were derivatives of a parent poly(acrylic acid) randomly grafted with hydrophobic side groups (either 3 mol % octadecyl group, or 1-5 mol % alkylamidoazobenzene photoresponsive groups). CAB:polymer complexes were characterized by light scattering and fluorescence correlation spectroscopy in aqueous buffers (pH 7.75 or 5.9). Circular dichroism and enzyme activity assays enabled us to study the kinetics of renaturation. All copolymers, including the hydrophilic PAA parent chain, provided a remarkable protective effect against CAB aggregation during renaturation, and most of them (but not the octadecyl-modified one) markedly enhanced the regain of activity as compared to CAB alone. The significant role of Coulomb binding in renaturation and comparatively the lack of efficacy of hydrophobic association was highlighted by measurements of activity regain before and after in situ dissociation of hydrophobic complexes (achieved by phototriggering the polarity of azobenzene-modified polymers under exposure to UV light). In the presence of polymers (CAB:polymer of 1:1 w/w ratio) at concentration ∼0.6 g L(-1), the radii of the largest complexes were similar to the radii of the copolymers alone, suggesting that the binding of CAB involves one or a few polymer chain(s). These complexes dissociated by dilution (0.01 g L(-1)). It is concluded that prevention of irreversible aggregation and activity recovery were achieved when marginally stable complexes are formed. Reaching a balanced stability of the complex plays the main role in CAB renaturation, irrespective of the nature of the binding (by Coulomb association, with or without contribution of hydrophobic association).
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Affiliation(s)
- Nicolas Martin
- Département de Chimie, Ecole Normale Supérieure-PSL Research University , 24, rue Lhomond, 75005, Paris, France
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Trabelsi S, Aschi A, Othman T, Gharbi A. Complex formation between ovalbumin and strong polyanion PSSNa: Study of structure and properties. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2014; 42:295-302. [DOI: 10.1016/j.msec.2014.05.042] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/14/2014] [Revised: 05/04/2014] [Accepted: 05/18/2014] [Indexed: 10/25/2022]
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Liljeström V, Mikkilä J, Kostiainen MA. Self-assembly and modular functionalization of three-dimensional crystals from oppositely charged proteins. Nat Commun 2014; 5:4445. [PMID: 25033911 PMCID: PMC4109007 DOI: 10.1038/ncomms5445] [Citation(s) in RCA: 106] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2014] [Accepted: 06/18/2014] [Indexed: 02/08/2023] Open
Abstract
Multicomponent crystals and nanoparticle superlattices are a powerful approach to integrate different materials into ordered nanostructures. Well-developed, especially DNA-based, methods for their preparation exist, yet most techniques concentrate on molecular and synthetic nanoparticle systems in non-biocompatible environment. Here we describe the self-assembly and characterization of binary solids that consist of crystalline arrays of native biomacromolecules. We electrostatically assembled cowpea chlorotic mottle virus particles and avidin proteins into heterogeneous crystals, where the virus particles adopt a non-close-packed body-centred cubic arrangement held together by avidin. Importantly, the whole preparation process takes place at room temperature in a mild aqueous medium allowing the processing of delicate biological building blocks into ordered structures with lattice constants in the nanometre range. Furthermore, the use of avidin-biotin interaction allows highly selective pre- or post-functionalization of the protein crystals in a modular way with different types of functional units, such as fluorescent dyes, enzymes and plasmonic nanoparticles.
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Affiliation(s)
- Ville Liljeström
- Biohybrid Materials Group, Department of Biotechnology and Chemical Technology, Aalto University, 00076 Aalto, Finland
- Molecular Materials Group, Department of Applied Physics, Aalto University, 00076 Aalto, Finland
| | - Joona Mikkilä
- Biohybrid Materials Group, Department of Biotechnology and Chemical Technology, Aalto University, 00076 Aalto, Finland
- Molecular Materials Group, Department of Applied Physics, Aalto University, 00076 Aalto, Finland
| | - Mauri A. Kostiainen
- Biohybrid Materials Group, Department of Biotechnology and Chemical Technology, Aalto University, 00076 Aalto, Finland
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Yang HW, Chen JK, Kuo SW, Lee AW. Degradable coronas comprising polyelectrolyte complexes of PDMAEMA and gelatin for pH-triggered antibiotic release. POLYMER 2014. [DOI: 10.1016/j.polymer.2014.04.014] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Chollakup R, Beck JB, Dirnberger K, Tirrell M, Eisenbach CD. Polyelectrolyte Molecular Weight and Salt Effects on the Phase Behavior and Coacervation of Aqueous Solutions of Poly(acrylic acid) Sodium Salt and Poly(allylamine) Hydrochloride. Macromolecules 2013. [DOI: 10.1021/ma202172q] [Citation(s) in RCA: 129] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Rungsima Chollakup
- Department of Chemical Engineering, University of California, Santa Barbara, California
93106, United States
- KAPI, Kasetsart University, Bangkok, Thailand
| | - John B. Beck
- Materials Research Laboratory, University of California, Santa Barbara, California
93106, United States
| | - Klaus Dirnberger
- Institute
for Polymer Chemistry, University of Stuttgart, D-70569 Stuttgart, Germany
| | - Matthew Tirrell
- Department of Chemical Engineering, University of California, Santa Barbara, California
93106, United States
- Materials Research Laboratory, University of California, Santa Barbara, California
93106, United States
| | - Claus D. Eisenbach
- Materials Research Laboratory, University of California, Santa Barbara, California
93106, United States
- Institute
for Polymer Chemistry, University of Stuttgart, D-70569 Stuttgart, Germany
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48
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The study of pH-dependent complexation between gelatin and gum arabic by morphology evolution and conformational transition. Food Hydrocoll 2013. [DOI: 10.1016/j.foodhyd.2012.06.007] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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49
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Xiong Y, Qi J, Yao P. Amphiphilic cholic-acid-modified dextran sulfate and its application for the controlled delivery of superoxide dismutase. Macromol Biosci 2012; 12:515-24. [PMID: 22606704 DOI: 10.1002/mabi.201100367] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
A novel amphiphilic and biodegradable polyelectrolyte DS-CA is prepared by the esterification of DS with CA. DS-CA can self-assemble into stable nanoparticles in water. SOD can effectively associate with DS-CA at pH = 5.0 by virtue of electrostatic and hydrophobic interactions. SOD release from the complex nanoparticles is slow at pH = 1.2. The release at pH = 7.4 PBS shows an extended behavior and is tunable by changing the weight ratio of SOD to DS-CA as well as the CA substitution degree. Increasing the CA substitution degree of DS-CA can significantly enhance the cellular uptake of the loaded SOD. This study demonstrates that the amphiphilic DS-CA provides a promising strategy for oral delivery of protein/peptide drugs.
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Affiliation(s)
- Yubing Xiong
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai 200433, China
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Yan Y, Liu J, Xiong Y, Cheng Y, Yao P. Superoxide Dismutase Binding and Release Behaviors of Dodecylated Poly(allylamine)s: Effects of Self-Aggregation and Organic Solvents. MACROMOL CHEM PHYS 2012. [DOI: 10.1002/macp.201200130] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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