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Kłodzińska SN, Wang Q, Molchanova N, Mahmoudi N, Vallooran JJ, Hansen PR, Jenssen H, Mørck Nielsen H. Nanogel delivery systems for cationic peptides: More than a 'One Size Fits All' solution. J Colloid Interface Sci 2024; 663:449-457. [PMID: 38417296 DOI: 10.1016/j.jcis.2024.02.101] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2023] [Revised: 02/12/2024] [Accepted: 02/12/2024] [Indexed: 03/01/2024]
Abstract
Self-assembled hyaluronic acid-based nanogels are versatile drug carriers due to their biodegradable nature and gentle preparation conditions, making them particularly interesting for delivery of peptide therapeutics. This study aims to elucidate the relation between peptide structure and encapsulation in a nanogel. Key peptide properties that affect encapsulation in octenyl succinic anhydride-modified hyaluronic acid nanogels were identified as we explored the effect on nanogel characteristics using 12 peptides with varying charge and hydrophobicity. The size and surface properties of the microfluidics-assembled peptide-loaded nanogels were evaluated using dynamic light scattering, laser Doppler electrophoresis, and small angle neutron scattering. Additionally, the change in peptide secondary structure upon encapsulation in nanogels, their release from the nanogels, and the in vitro antimicrobial activity were assessed. In conclusion, the more hydrophobic peptides showed stronger binding to the nanogel carrier and localized internally rather than on the surface of the nanogel, resulting in more spherical nanogels with smoother surfaces and slower release profiles. In contrast, cationic and hydrophilic peptides localized at the nanogel surface resulting in fluffier nanogel structures and quick and more complete release in biorelevant medium. These findings emphasize that the advantages of nanogel delivery systems for different applications depend on the therapeutic peptide properties.
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Affiliation(s)
- Sylvia N Kłodzińska
- Center for Biopharmaceuticals and Biobarriers in Drug Delivery (BioDelivery), Department of Pharmacy, Faculty of Health and Medical Sciences, University of Copenhagen, Universitetsparken 2, DK-2100 Copenhagen, Denmark
| | - Qiuyu Wang
- Center for Biopharmaceuticals and Biobarriers in Drug Delivery (BioDelivery), Department of Pharmacy, Faculty of Health and Medical Sciences, University of Copenhagen, Universitetsparken 2, DK-2100 Copenhagen, Denmark
| | - Natalia Molchanova
- Department of Science and Environment, Roskilde University, Universitetsvej 1, DK-4000 Roskilde, Denmark
| | - Najet Mahmoudi
- ISIS Neutron and Muon Source, STFC, Rutherford Appleton Laboratory, Harwell Campus, Didcot, UK
| | - Jijo J Vallooran
- Department of Chemistry, Nirmala College, Muvattupuzha, Kerala, India
| | - Paul R Hansen
- Department of Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen, Universitetsparken 2, DK-2100 Copenhagen, Denmark
| | - Håvard Jenssen
- Department of Science and Environment, Roskilde University, Universitetsvej 1, DK-4000 Roskilde, Denmark
| | - Hanne Mørck Nielsen
- Center for Biopharmaceuticals and Biobarriers in Drug Delivery (BioDelivery), Department of Pharmacy, Faculty of Health and Medical Sciences, University of Copenhagen, Universitetsparken 2, DK-2100 Copenhagen, Denmark.
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2
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Chatterjee A, Zhang K, Parker KM. Binding of Dissolved Organic Matter to RNA and Protection from Nuclease-Mediated Degradation. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2023; 57:16086-16096. [PMID: 37811805 DOI: 10.1021/acs.est.3c05019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/10/2023]
Abstract
The persistence of RNA in environmental systems is an important parameter for emerging applications, including ecological surveys, wastewater-based epidemiology, and RNA interference biopesticides. RNA persistence is controlled by its rate of biodegradation, particularly by extracellular enzymes, although the specific factors determining this rate have not been characterized. Due to prior work suggesting that nucleic acids-specifically DNA-interact with dissolved organic matter (DOM), we hypothesized that DOM may bind RNA and impede its biodegradation in natural systems. We first adapted a technique previously used to assess RNA-protein binding to differentiate RNA that is bound at all sites by DOM from RNA that is unbound or partially bound by DOM. Results from this technique suggested that humic acids bound RNA more extensively than fulvic acids. At concentrations of 8-10 mgC/L, humic acids were also found to be more effective than fulvic acids at suppressing enzymatic degradation of RNA. In surface water and soil extract containing DOM, RNA degradation was suppressed by 39-46% relative to pH-adjusted controls. Due to the ability of DOM to both bind and suppress the enzymatic degradation of RNA, RNA biodegradation may be slowed in environmental systems with high DOM concentrations, which may increase its persistence.
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Affiliation(s)
- Anamika Chatterjee
- Department of Energy, Environmental & Chemical Engineering, Washington University in St. Louis, St. Louis, Missouri 63130, United States
| | - Ke Zhang
- Department of Energy, Environmental & Chemical Engineering, Washington University in St. Louis, St. Louis, Missouri 63130, United States
| | - Kimberly M Parker
- Department of Energy, Environmental & Chemical Engineering, Washington University in St. Louis, St. Louis, Missouri 63130, United States
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3
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Wanselius M, Searle S, Rodler A, Tenje M, Abrahmsén-Alami S, Hansson P. Microfluidics Platform for Studies of Peptide – Polyelectrolyte Interaction. Int J Pharm 2022; 621:121785. [DOI: 10.1016/j.ijpharm.2022.121785] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2022] [Revised: 04/12/2022] [Accepted: 04/26/2022] [Indexed: 02/01/2023]
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4
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Xiao X, Ji J, Zhao W, Nangia S, Libera M. Salt Destabilization of Cationic Colistin Complexation within Polyanionic Microgels. Macromolecules 2022. [DOI: 10.1021/acs.macromol.1c02157] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Xixi Xiao
- Department of Chemical Engineering and Materials Science, Stevens Institute of Technology, Hoboken, New Jersey 07030, United States
| | - Jingjing Ji
- Department of Biomedical and Chemical Engineering, Syracuse University, Syracuse, New York 13244, United States
| | - Wenhan Zhao
- Department of Chemical Engineering and Materials Science, Stevens Institute of Technology, Hoboken, New Jersey 07030, United States
| | - Shikha Nangia
- Department of Biomedical and Chemical Engineering, Syracuse University, Syracuse, New York 13244, United States
| | - Matthew Libera
- Department of Chemical Engineering and Materials Science, Stevens Institute of Technology, Hoboken, New Jersey 07030, United States
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5
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Al-Tikriti Y, Hansson P. Drug-Induced Phase Separation in Polyelectrolyte Microgels. Gels 2021; 8:gels8010004. [PMID: 35049539 PMCID: PMC8774790 DOI: 10.3390/gels8010004] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2021] [Revised: 12/08/2021] [Accepted: 12/18/2021] [Indexed: 01/28/2023] Open
Abstract
Polyelectrolyte microgels may undergo volume phase transition upon loading and the release of amphiphilic molecules, a process important in drug delivery. The new phase is “born” in the outermost gel layers, whereby it grows inward as a shell with a sharp boundary to the “mother” phase (core). The swelling and collapse transitions have previously been studied with microgels in large solution volumes, where they go to completion. Our hypothesis is that the boundary between core and shell is stabilized by thermodynamic factors, and thus that collapsed and swollen phases should be able to also coexist at equilibrium. We investigated the interaction between sodium polyacrylate (PA) microgel networks (diameter: 400–850 µm) and the amphiphilic drug amitriptyline hydrochloride (AMT) in the presence of NaCl/phosphate buffer of ionic strength (I) 10 and 155 mM. We used a specially constructed microscopy cell and micromanipulators to study the size and internal morphology of single microgels equilibrated in small liquid volumes of AMT solution. To probe the distribution of AMT micelles we used the fluorescent probe rhodamine B. The amount of AMT in the microgel was determined by a spectrophotometric technique. In separate experiments we studied the binding of AMT and the distribution between different microgels in a suspension. We found that collapsed, AMT-rich, and swollen AMT-lean phases coexisted in equilibrium or as long-lived metastable states at intermediate drug loading levels. In single microgels at I = 10 mM, the collapsed phase formed after loading deviated from the core-shell configuration by forming either discrete domains near the gel boundary or a calotte shaped domain. At I = 155 mM, single microgels, initially fully collapsed, displayed a swollen shell and a collapsed core after partial release of the AMT load. Suspensions displayed a bimodal distribution of swollen and collapsed microgels. The results support the hypothesis that the boundary between collapsed and swollen phases in the same microgel is stabilized by thermodynamic factors.
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Affiliation(s)
- Yassir Al-Tikriti
- Department of Pharmacy, Uppsala University, P.O. Box 580, 75123 Uppsala, Sweden;
- Department of Medicinal Chemistry, Uppsala University, P.O. Box 574, 75123 Uppsala, Sweden
| | - Per Hansson
- Department of Pharmacy, Uppsala University, P.O. Box 580, 75123 Uppsala, Sweden;
- Department of Medicinal Chemistry, Uppsala University, P.O. Box 574, 75123 Uppsala, Sweden
- Correspondence: ; Tel.: +46-18-4714027
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Gera S, Kankuri E, Kogermann K. Antimicrobial peptides - Unleashing their therapeutic potential using nanotechnology. Pharmacol Ther 2021; 232:107990. [PMID: 34592202 DOI: 10.1016/j.pharmthera.2021.107990] [Citation(s) in RCA: 35] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2021] [Revised: 08/30/2021] [Accepted: 09/01/2021] [Indexed: 02/07/2023]
Abstract
Antimicrobial peptides (AMPs) are potent, mostly cationic, and amphiphilic broad-spectrum host defense antimicrobials that are produced by all organisms ranging from prokaryotes to humans. In addition to their antimicrobial actions, they modulate inflammatory and immune responses and promote wound healing. Although they have clear benefits over traditional antibiotic drugs, their wide therapeutic utilization is compromised by concerns of toxicity, stability, and production costs. Recent advances in nanotechnology have attracted increasing interest to unleash the AMPs' immense potential as broad-spectrum antibiotics and anti-biofilm agents, against which the bacteria have less chances to develop resistance. Topical application of AMPs promotes migration of keratinocytes and fibroblasts, and contributes significantly to an accelerated wound healing process. Delivery of AMPs by employing nanotechnological approaches avoids the major disadvantages of AMPs, such as instability and toxicity, and provides a controlled delivery profile together with prolonged activity. In this review, we provide an overview of the key properties of AMPs and discuss the latest developments in topical AMP therapy using nanocarriers. We use chronic hard-to-heal wounds-complicated by infections, inflammation, and stagnated healing-as an example of an unmet medical need for which the AMPs' wide range of therapeutic actions could provide the most potential benefit. The use of innovative materials and sophisticated nanotechnological approaches offering various possibilities are discussed in more depth.
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Affiliation(s)
- Sonia Gera
- Institute of Pharmacy, University of Tartu, Nooruse 1, 50411 Tartu, Estonia
| | - Esko Kankuri
- Department of Pharmacology, Faculty of Medicine, University of Helsinki, Haartmaninkatu 8, 00290 Helsinki, Finland.
| | - Karin Kogermann
- Institute of Pharmacy, University of Tartu, Nooruse 1, 50411 Tartu, Estonia.
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Liang J, Xiao X, Chou TM, Libera M. Counterion Exchange in Peptide-Complexed Core-Shell Microgels. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:9521-9528. [PMID: 31242724 DOI: 10.1021/acs.langmuir.9b01058] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
The complexation of polyvalent macroions with oppositely charged polyelectrolyte microgels can lead to core-shell structures. The shell is believed to be highly deswollen with a high concentration of counter-macroions. The core is believed to be relatively free of macroions but under a uniform compressive stress due to the deswollen shell. We use cryo-scanning electron microscopy (SEM) with X-ray microanalysis to confirm this understanding. We study poly(acrylic acid) (PAA) microgels which form a core-shell structure when complexed with a small cationic antimicrobial peptide (L5). We follow the spatial distribution of polymer, water, Na counterions, and peptide based on the characteristic X-ray intensities of C, O, Na, and N, respectively. Frozen-hydrated microgel suspensions include buffers of known composition from which calibration curves can be generated and used to quantify both the microgel water and sodium concentrations, the latter with a minimum quantifiable concentration less than 0.048 M. We find that as-synthesized PAA microgels are enriched in Na relative to the surrounding buffer as anticipated from established ideas of counterion shielding of electrostatic charge. The shell in L5-complexed microgels is depleted in Na and enriched in peptide and contains relatively little water. Our measurements furthermore show that shell/core interface is diffuse over a length scale of a few micrometers. Within the limits of detection, the core Na concentration is the same as that in as-synthesized microgels, and the core is free of peptide. The core has a slightly lower water concentration than as-synthesized controls, consistent with the hypothesis that the core is under compression from the shell.
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Affiliation(s)
- Jing Liang
- Department of Chemical Engineering & Materials Science , Stevens Institute of Technology , Hoboken , New Jersey 07030 , United States
| | - Xixi Xiao
- Department of Chemical Engineering & Materials Science , Stevens Institute of Technology , Hoboken , New Jersey 07030 , United States
| | - Tseng-Ming Chou
- Department of Chemical Engineering & Materials Science , Stevens Institute of Technology , Hoboken , New Jersey 07030 , United States
| | - Matthew Libera
- Department of Chemical Engineering & Materials Science , Stevens Institute of Technology , Hoboken , New Jersey 07030 , United States
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8
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Labie H, Perro A, Lapeyre V, Goudeau B, Catargi B, Auzély R, Ravaine V. Sealing hyaluronic acid microgels with oppositely-charged polypeptides: A simple strategy for packaging hydrophilic drugs with on-demand release. J Colloid Interface Sci 2018; 535:16-27. [PMID: 30273723 DOI: 10.1016/j.jcis.2018.09.048] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2018] [Revised: 09/14/2018] [Accepted: 09/14/2018] [Indexed: 12/16/2022]
Abstract
A simple route to deliver on demand hydrosoluble molecules such as peptides, packaged in biocompatible and biodegradable microgels, is presented. Hyaluronic acid hydrogel particles with a controlled structure are prepared using a microfluidic approach. Their porosity and their rigidity can be tuned by changing the crosslinking density. These negatively-charged polyelectrolytes interact strongly with positively-charged linear peptides such as poly-l-lysine (PLL). Their interactions induce microgel deswelling and inhibit microgel enzymatic degradability by hyaluronidase. While small PLL penetrate the whole volume of the microgel, PLL larger than the mesh size of the network remain confined at its periphery. They make a complexed layer with reduced pore size, which insulates the microgel inner core from the outer medium. Consequently, enzymatic degradation of the matrix is fully inhibited and non-affinity hydrophilic species can be trapped in the core. Indeed, negatively-charged or small neutral peptides, without interactions with the network, usually diffuse freely across the network. By simple addition of large PLL, they are packaged in the core and can be released on demand, upon introduction of an enzyme that degrades selectively the capping agent. Single polyelectrolyte layer appears as a simple generic method to coat hydrogel-based materials of various scales for encapsulation and controlled delivery of hydrosoluble molecules.
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Affiliation(s)
- Hélène Labie
- Univ. Bordeaux, ISM, CNRS UMR 5255, Bordeaux INP, Site ENSCBP, 16 Avenue Pey Berland, 33607 Pessac Cedex, France
| | - Adeline Perro
- Univ. Bordeaux, ISM, CNRS UMR 5255, Bordeaux INP, Site ENSCBP, 16 Avenue Pey Berland, 33607 Pessac Cedex, France
| | - Véronique Lapeyre
- Univ. Bordeaux, ISM, CNRS UMR 5255, Bordeaux INP, Site ENSCBP, 16 Avenue Pey Berland, 33607 Pessac Cedex, France
| | - Bertrand Goudeau
- Univ. Bordeaux, ISM, CNRS UMR 5255, Bordeaux INP, Site ENSCBP, 16 Avenue Pey Berland, 33607 Pessac Cedex, France
| | | | - Rachel Auzély
- Centre de Recherches sur les Macromolécules Végétales (CERMAV-CNRS), Affiliated with Université Joseph Fourier, 601 rue de la Chimie, 38041 Grenoble, France
| | - Valérie Ravaine
- Univ. Bordeaux, ISM, CNRS UMR 5255, Bordeaux INP, Site ENSCBP, 16 Avenue Pey Berland, 33607 Pessac Cedex, France.
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9
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Gelissen APH, Scotti A, Turnhoff SK, Janssen C, Radulescu A, Pich A, Rudov AA, Potemkin II, Richtering W. An anionic shell shields a cationic core allowing for uptake and release of polyelectrolytes within core-shell responsive microgels. SOFT MATTER 2018; 14:4287-4299. [PMID: 29774926 DOI: 10.1039/c8sm00397a] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
To realize carriers for drug delivery, cationic containers are required for anionic guests. Nevertheless, the toxicity of cationic carriers limits their practical use. In this study, we investigate a model system of polyampholyte N-isopropylacrylamide (NIPAM)-based microgels with a cationic core and an anionic shell to study whether the presence of a negative shell allows the cationic core to be shielded while still enabling the uptake and release of the anionic guest polyelectrolytes. These microgels are loaded with polystyrene sulfonate of different molecular weights to investigate the influence of their chain length on the uptake and release process. By means of small-angle neutron scattering, we evaluate the spatial distribution of polystyrene sulfonate within the microgels. The guest molecules are located in different parts of the core-shell microgels depending on their size. By combining these scattering results with UV-vis spectroscopy, electrophoretic mobility and potentiometric titrations we gain complementary results to investigate the uptake and release process of polyelectrolytes in polyampholyte core-shell microgels. Moreover, Brownian molecular dynamic simulations are performed to compare the experimental and theoretical results of this model. Our findings demonstrate that the presence of a shell still enables efficient uptake of guest molecules into the cationic core. These anionic guest molecules can be released through an anionic shell. Furthermore, the presence of a shell enhances the stability of the microgel-polyelectrolyte complexes with respect to the cationic precursor microgel alone.
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Affiliation(s)
- Arjan P H Gelissen
- Institute of Physical Chemistry, RWTH Aachen University, 52056 Aachen, Germany.
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10
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Membrane interactions of microgels as carriers of antimicrobial peptides. J Colloid Interface Sci 2018; 513:141-150. [DOI: 10.1016/j.jcis.2017.11.014] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2017] [Revised: 11/01/2017] [Accepted: 11/04/2017] [Indexed: 12/11/2022]
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11
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Adroher-Benítez I, Moncho-Jordá A, Dzubiella J. Sorption and Spatial Distribution of Protein Globules in Charged Hydrogel Particles. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:4567-4577. [PMID: 28431468 DOI: 10.1021/acs.langmuir.7b00356] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
We have theoretically studied the uptake of a nonuniformly charged biomolecule suitable for representing a globular protein or a drug by a charged hydrogel carrier in the presence of a 1:1 electrolyte. On the basis of the analysis of a physical interaction Hamiltonian including monopolar, dipolar, and Born (self-energy) contributions derived from linear electrostatic theory of the unperturbed homogeneous hydrogel, we have identified five different sorption states of the system, from complete repulsion of the molecule to its full sorption deep inside the hydrogel, passing through metastable and stable surface adsorption states. The results are summarized in state diagrams that also explore the effects of varying the electrolyte concentration, the sign of the net electric charge of the biomolecule, and the role of including excluded-volume (steric) or hydrophobic biomolecule-hydrogel interactions. We show that the dipole moment of the biomolecule is a key parameter controlling the spatial distribution of the globules. In particular, biomolecules with a large dipole moment tend to be adsorbed at the external surface of the hydrogel, even if like-charged, whereas uniformly charged biomolecules tend to partition toward the internal core of an oppositely charged hydrogel. Hydrophobic attraction shifts the states toward the internal sorption of the biomolecule, whereas steric repulsion promotes surface adsorption for oppositely charged biomolecules or for the total exclusion of likely charged ones. Our results establish a guideline for the spatial partitioning of proteins and drugs in hydrogel carriers, tunable by the hydrogel charge, pH, and salt concentration.
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Affiliation(s)
| | | | - Joachim Dzubiella
- Institut für Physik, Humboldt-Universität zu Berlin , Newtonstr. 15, D-12489 Berlin, Germany
- Institut für Weiche Materie and Funktionale Materialen, Helmholtz-Zentrum Berlin , Hahn-Meitner Platz 1, D-14109 Berlin, Germany
- Multifunctional Biomaterials for Medicine, Helmholtz Virtual Institute , 14513 Teltow, Germany
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12
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Delivery systems for antimicrobial peptides. Adv Colloid Interface Sci 2017; 242:17-34. [PMID: 28159168 DOI: 10.1016/j.cis.2017.01.005] [Citation(s) in RCA: 144] [Impact Index Per Article: 20.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2016] [Revised: 01/24/2017] [Accepted: 01/24/2017] [Indexed: 12/18/2022]
Abstract
Due to rapidly increasing resistance development against conventional antibiotics, finding novel approaches for the treatment of infections has emerged as a key health issue. Antimicrobial peptides (AMPs) have attracted interest in this context, and there is by now a considerable literature on the identification such peptides, as well as on their optimization to reach potent antimicrobial and anti-inflammatory effects at simultaneously low toxicity against human cells. In comparison, delivery systems for antimicrobial peptides have attracted considerably less interest. However, such delivery systems are likely to play a key role in the development of potent and safe AMP-based therapeutics, e.g., through reducing chemical or biological degradation of AMPs either in the formulation or after administration, by reducing adverse side-effects, by controlling AMP release rate, by promoting biofilm penetration, or through achieving co-localization with intracellular pathogens. Here, an overview is provided of the current understanding of delivery systems for antimicrobial peptides, with special focus on AMP-carrier interactions, as well as consequences of these interactions for antimicrobial and related biological effects of AMP-containing formulations.
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13
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Nyström L, Malmsten M. Surface-bound microgels - From physicochemical properties to biomedical applications. Adv Colloid Interface Sci 2016; 238:88-104. [PMID: 27865424 DOI: 10.1016/j.cis.2016.11.003] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2016] [Revised: 11/02/2016] [Accepted: 11/04/2016] [Indexed: 12/18/2022]
Abstract
Microgels offer robust and facile approaches for surface modification, as well as opportunities to introduce biological functionality by loading such structures with bioactive agents, e.g., in the context of drug delivery, functional biomaterials, and biosensors. As such, they provide a versatile approach for the design of surfaces with pre-determined characteristics compared to more elaborate bottom-up approaches, such as layer-by-layer deposition and surface-initiated polymerization. In the present overview, properties of surface-bound microgels are discussed, ranging from physical adsorption and covalent grafting in dilute systems, to directed self-assembly, multilayer structures, and composites, as well as loading an release of drugs and other cargo molecules into/from such systems, and biomedical applications of these.
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14
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Kleinberger RM, Burke NAD, Zhou C, Stöver HDH. Synthetic polycations with controlled charge density and molecular weight as building blocks for biomaterials. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2016; 27:351-69. [PMID: 26754568 DOI: 10.1080/09205063.2015.1130407] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
A series of polycations prepared by RAFT copolymerization of N-(3-aminopropyl)methacrylamide hydrochloride (APM) and N-(2-hydroxypropyl)methacrylamide, with molecular weights of 15 and 40 kDa, and APM content of 10-75 mol%, were tested as building blocks for electrostatically assembled hydrogels such as those used for cell encapsulation. Complexation and distribution of these copolymers within anionic calcium alginate gels, as well as cytotoxicity, cell attachment, and cell proliferation on surfaces grafted with the copolymers were found to depend on composition and molecular weight. Copolymers with lower cationic charge density and lower molecular weight showed less cytotoxicity and cell adhesion, and were more mobile within alginate gels. These findings aid in designing improved polyelectrolyte complexes for use as biomaterials.
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Affiliation(s)
- Rachelle M Kleinberger
- a Department of Chemistry and Chemical Biology , McMaster University , Hamilton , Canada
| | - Nicholas A D Burke
- a Department of Chemistry and Chemical Biology , McMaster University , Hamilton , Canada
| | - Christal Zhou
- a Department of Chemistry and Chemical Biology , McMaster University , Hamilton , Canada
| | - Harald D H Stöver
- a Department of Chemistry and Chemical Biology , McMaster University , Hamilton , Canada
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15
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McCann J, Behrendt JM, Yan J, Halacheva S, Saunders BR. Poly(vinylamine) microgel–dextran composite hydrogels: Characterisation; properties and pH-triggered degradation. J Colloid Interface Sci 2015; 449:21-30. [DOI: 10.1016/j.jcis.2014.09.041] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2014] [Revised: 09/16/2014] [Accepted: 09/17/2014] [Indexed: 10/24/2022]
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16
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Gernandt J, Hansson P. Hysteresis in the Surfactant-Induced Volume Transition of Hydrogels. J Phys Chem B 2015; 119:1717-25. [DOI: 10.1021/jp5087416] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Jonas Gernandt
- 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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17
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Månsson R, Frenning G, Malmsten M. Factors Affecting Enzymatic Degradation of Microgel-Bound Peptides. Biomacromolecules 2013; 14:2317-25. [DOI: 10.1021/bm400431f] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Ronja Månsson
- Department
of Pharmacy, Uppsala University, P.O. Box
580, SE-751 23 Uppsala, Sweden
| | - Göran Frenning
- Department
of Pharmacy, Uppsala University, P.O. Box
580, SE-751 23 Uppsala, Sweden
| | - Martin Malmsten
- Department
of Pharmacy, Uppsala University, P.O. Box
580, SE-751 23 Uppsala, Sweden
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18
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Impregnation of weakly charged anionic microhydrogels with cationic polyelectrolytes and their swelling properties monitored by a high resolution interferometric technique. Transformation from a polyelectrolyte to polyampholyte hydrogel. Eur Polym J 2012. [DOI: 10.1016/j.eurpolymj.2012.07.006] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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19
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Hansson P, Bysell H, Månsson R, Malmsten M. Peptide–Microgel Interactions in the Strong Coupling Regime. J Phys Chem B 2012; 116:10964-75. [DOI: 10.1021/jp306121h] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Per Hansson
- Department
of Pharmacy, Uppsala University, P.O. Box
580, SE-751 23 Uppsala, Sweden
| | - Helena Bysell
- Department
of Pharmacy, Uppsala University, P.O. Box
580, SE-751 23 Uppsala, Sweden
| | - Ronja Månsson
- Department
of Pharmacy, Uppsala University, P.O. Box
580, SE-751 23 Uppsala, Sweden
| | - Martin Malmsten
- Department
of Pharmacy, Uppsala University, P.O. Box
580, SE-751 23 Uppsala, Sweden
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21
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Cationic polyvinylamine binding to anionic microgels yields kinetically controlled structures. J Colloid Interface Sci 2012; 369:223-30. [DOI: 10.1016/j.jcis.2011.12.035] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2011] [Revised: 12/09/2011] [Accepted: 12/11/2011] [Indexed: 11/19/2022]
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22
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Li Y, Norde W, Kleijn JM. Stabilization of protein-loaded starch microgel by polyelectrolytes. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2012; 28:1545-1551. [PMID: 22149363 DOI: 10.1021/la204014q] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
The interaction of biocompatible polyelectrolytes (chargeable poly(amino acids)) with oxidized starch microgel particles has been studied. The aim was to form a polyelectrolyte complex layer around the outer shell of microgel particles filled with functional ingredients to slow down the release of the ingredients from the gel and make this process less sensitive to salt. First, the distribution of positively charged poly(l-lysine) (PLL) of two different molecular weights ("small", 15-30 kDa, and "large", 30-70 kDa) in the negatively charged gel particles was measured. The small PLL distributes homogeneously throughout the gel particles, but the large PLL forms a shell; i.e., its concentration at the outer layer of the particles was found to be much higher than in their core. This shell formation does not occur at a relatively high salt concentration (0.07 M). The large PLL was selected for further study. It was found that upon addition of PLL to lysozyme-loaded gel particles the protein is exchanged by PLL. The exchange rate increases with increasing pH, in line with the increasing electrostatic attraction between the gel and the polyelectrolyte. Therefore, it was decided to use also a negatively charged poly(amino acid), poly(L-glutamic acid) (PGA), to form together with PLL a stable polyelectrolyte complex shell around the gel particles. This approach turned out to be successful, and the PLL/PGA complex layer effectively slows down the release of lysozyme from the microgel particles at 0.05 M salt. In addition, it was found that the PLL/PGA layer protects the gel particle from degradation by α-amylase.
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Affiliation(s)
- Yuan Li
- Laboratory of Physical Chemistry and Colloid Science, Dreijenplein 6, 6703 HB Wageningen, The Netherlands
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23
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Effects of peptide cyclization on the interaction with oppositely charged microgels. Colloids Surf A Physicochem Eng Asp 2011. [DOI: 10.1016/j.colsurfa.2011.01.029] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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24
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Microgels and microcapsules in peptide and protein drug delivery. Adv Drug Deliv Rev 2011; 63:1172-85. [PMID: 21914455 DOI: 10.1016/j.addr.2011.08.005] [Citation(s) in RCA: 159] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2011] [Revised: 08/16/2011] [Accepted: 08/30/2011] [Indexed: 11/20/2022]
Abstract
The present review focuses on the interaction of microgels and microcapsules with biological macromolecules, particularly peptides and proteins, as well as drug delivery applications of such systems. Results from recent studies on factors affecting peptide/protein binding to, and release from, microgels and related systems are discussed, including effects of network properties, as well as protein aggregation, peptide length, hydrophobicity and charge (distributions), secondary structure, and cyclization. Effects of ambient conditions (pH, ionic strength, temperature, etc.) are also discussed, all with focus on factors of importance for the performance of microgel and microcapsule delivery systems for biomacromolecular drugs.
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Månsson R, Bysell H, Hansson P, Schmidtchen A, Malmsten M. Effects of Peptide Secondary Structure on the Interaction with Oppositely Charged Microgels. Biomacromolecules 2010; 12:419-24. [DOI: 10.1021/bm101165e] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Ronja Månsson
- Department of Pharmacy, Uppsala University, P.O. Box 580, SE-751 23 Uppsala, Sweden, and Section of Dermatology and Venerology, Department of Clinical Sciences, Lund University, SE-221 84 Lund, Sweden
| | - Helena Bysell
- Department of Pharmacy, Uppsala University, P.O. Box 580, SE-751 23 Uppsala, Sweden, and Section of Dermatology and Venerology, Department of Clinical Sciences, Lund University, SE-221 84 Lund, Sweden
| | - Per Hansson
- Department of Pharmacy, Uppsala University, P.O. Box 580, SE-751 23 Uppsala, Sweden, and Section of Dermatology and Venerology, Department of Clinical Sciences, Lund University, SE-221 84 Lund, Sweden
| | - Artur Schmidtchen
- Department of Pharmacy, Uppsala University, P.O. Box 580, SE-751 23 Uppsala, Sweden, and Section of Dermatology and Venerology, Department of Clinical Sciences, Lund University, SE-221 84 Lund, Sweden
| | - Martin Malmsten
- Department of Pharmacy, Uppsala University, P.O. Box 580, SE-751 23 Uppsala, Sweden, and Section of Dermatology and Venerology, Department of Clinical Sciences, Lund University, SE-221 84 Lund, Sweden
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Malmsten M, Bysell H, Hansson P. Biomacromolecules in microgels — Opportunities and challenges for drug delivery. Curr Opin Colloid Interface Sci 2010. [DOI: 10.1016/j.cocis.2010.05.016] [Citation(s) in RCA: 118] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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28
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Johansson C, Gernandt J, Bradley M, Vincent B, Hansson P. Interaction between lysozyme and colloidal poly(NIPAM-co-acrylic acid) microgels. J Colloid Interface Sci 2010; 347:241-51. [DOI: 10.1016/j.jcis.2010.03.072] [Citation(s) in RCA: 61] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2010] [Revised: 03/29/2010] [Accepted: 03/31/2010] [Indexed: 10/19/2022]
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Bysell H, Hansson P, Malmsten M. Effect of Charge Density on the Interaction between Cationic Peptides and Oppositely Charged Microgels. J Phys Chem B 2010; 114:7207-15. [DOI: 10.1021/jp1016664] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Helena Bysell
- Department of Pharmacy, Uppsala University, P.O. Box 580, SE-751 23 Uppsala, Sweden
| | - Per Hansson
- Department of Pharmacy, Uppsala University, P.O. Box 580, SE-751 23 Uppsala, Sweden
| | - Martin Malmsten
- Department of Pharmacy, Uppsala University, P.O. Box 580, SE-751 23 Uppsala, Sweden
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Cheng C, Zhu X, Pich A, Möller M. Aqueous microgels modified by wedge-shaped amphiphilic molecules: hydrophilic microcontainers with hydrophobic nanodomains. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2010; 26:4709-4716. [PMID: 19961194 DOI: 10.1021/la903588p] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
A simple route for the design of hydrophilic microgels comprising inner hydrophobic nanodomains has been developed based on postmodification of microgels by complexation of wedge-shaped amphiphilic molecules with complementary functional groups. Aqueous microgels functionalized with imidazole groups were transferred into an organic medium, where imidazole groups were neutralized by water-insoluble wedge-shaped molecules bearing a sulfonic acid group at the tip of the wedge and a large hydrocarbon body. After redispersion of the modified microgel particles into the aqueous phase, wedge-shaped amphiphiles ionically attached to the polymer chains self-assembled into discrete nanodomains in the interior of the polymer colloids due to the hydrophobic attraction force. The loading of the wedge-shaped molecules into microgels can be controlled by variation of the amount of imidazole groups integrated into the microgel network as well as the neutralization degree. The experimental results suggested that incorporation of hydrophobic domains into hydrophilic colloids induced dramatic changes of their properties such as swelling degree, surface charge, and responsiveness toward temperature and pH. Finally, we demonstrated that internally hydrophobized microgel particles are very effective in uptake of hydrophobic molecules in aqueous media.
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Affiliation(s)
- Cheng Cheng
- DWI an der RWTH Aachen e.V., Institut für Technische und Makromolekulare Chemie der RWTH Aachen University, Pauwelsstr. 8, D-52056 Aachen, Germany
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Bysell H, Hansson P, Schmidtchen A, Malmsten M. Effect of Hydrophobicity on the Interaction between Antimicrobial Peptides and Poly(acrylic acid) Microgels. J Phys Chem B 2010; 114:1307-13. [DOI: 10.1021/jp910068t] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Helena Bysell
- Department of Pharmacy, Uppsala University, P.O. Box 580, SE-751 23 Uppsala, Sweden, Section of Dermatology and Venereology, Department of Clinical Sciences, Lund University, SE-221 84 Lund, Sweden
| | - Per Hansson
- Department of Pharmacy, Uppsala University, P.O. Box 580, SE-751 23 Uppsala, Sweden, Section of Dermatology and Venereology, Department of Clinical Sciences, Lund University, SE-221 84 Lund, Sweden
| | - Artur Schmidtchen
- Department of Pharmacy, Uppsala University, P.O. Box 580, SE-751 23 Uppsala, Sweden, Section of Dermatology and Venereology, Department of Clinical Sciences, Lund University, SE-221 84 Lund, Sweden
| | - Martin Malmsten
- Department of Pharmacy, Uppsala University, P.O. Box 580, SE-751 23 Uppsala, Sweden, Section of Dermatology and Venereology, Department of Clinical Sciences, Lund University, SE-221 84 Lund, Sweden
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Bysell H, Schmidtchen A, Malmsten M. Binding and release of consensus peptides by poly(acrylic acid) microgels. Biomacromolecules 2009; 10:2162-8. [PMID: 19583241 DOI: 10.1021/bm9003354] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The interaction between positively charged consensus peptides and poly(acrylic acid) microgels was investigated with micromanipulator-assisted light microscopy and confocal laser scanning microscopy. Peptide binding and release was monitored by microgel deswelling and swelling for monodisperse multiples of heparin-binding Cardin and Weintraub motifs, (AKKARA)(n) (1 <or= n <or= 4) and (ARKKAAKA)(n) (1 <or= n <or= 3), as well as the corresponding titratable (AHHAHA)(4) and (AHHHAAHA)(3) peptides (A, K, R and H, refering to alanine, lysine, arginine, and histidine, respectively). When fully charged, these peptides distribute homogenously throughout the microgels and display concentration-dependent deswelling, which increases with increasing peptide length. Both (AKKARA)(4) and (ARKKAAKA)(3) display potent and fast microgel deswelling but only marginal subsequent electrolyte-induced desorption. In contrast, reducing the peptide charge for (AHHAHA)(4) and (AHHHAAHA)(3) at neutral and high pH, or the peptide length, substantially reduces the peptide affinity for the microgels and facilitates rapid peptide release. Taken together, the results also show that quite short peptides of moderate charge density interact strongly and cause extensive gel deswelling of oppositely charged microgels, precluding peptide release. They also show, however, that desirable triggered release can be achieved with peptides of lower charge density.
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Affiliation(s)
- Helena Bysell
- Department of Pharmacy, Uppsala University, SE-751 23 Uppsala, Sweden.
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Johansson C, Hansson P, Malmsten M. Mechanism of Lysozyme Uptake in Poly(acrylic acid) Microgels. J Phys Chem B 2009; 113:6183-93. [DOI: 10.1021/jp900706k] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Christian Johansson
- Department of Pharmacy, Uppsala University, P.O. Box 580, SE-751 23 Uppsala, Sweden
| | - Per Hansson
- Department of Pharmacy, Uppsala University, P.O. Box 580, SE-751 23 Uppsala, Sweden
| | - Martin Malmsten
- Department of Pharmacy, Uppsala University, P.O. Box 580, SE-751 23 Uppsala, Sweden
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Oishi M, Nakamura T, Jinji Y, Matsuishi K, Nagasaki Y. Multi-stimuli-triggered release of charged dye from smart PEGylated nanogels containing gold nanoparticles to regulate fluorescence signals. ACTA ACUST UNITED AC 2009. [DOI: 10.1039/b910060a] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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