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Noddeland HK, Canbay V, Lind M, Savickas S, Jensen LB, Petersson K, Malmsten M, Koch J, Auf dem Keller U, Heinz A. Matrix metalloproteinase landscape in the imiquimod-induced skin inflammation mouse model. Biochimie 2024:S0300-9084(24)00069-5. [PMID: 38513823 DOI: 10.1016/j.biochi.2024.03.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2024] [Revised: 02/29/2024] [Accepted: 03/18/2024] [Indexed: 03/23/2024]
Abstract
Inflammation and autoimmunity are known as central processes in many skin diseases, including psoriasis. It is therefore important to develop pre-clinical models that describe disease-related aspects to enable testing of pharmaceutical drug candidates and formulations. A widely accepted pre-clinical model of psoriasis is the imiquimod (IMQ)-induced skin inflammation mouse model, where topically applied IMQ provokes local skin inflammation. In this study, we investigated the abundance of a subset of matrix metalloproteinases (MMPs) in skin from mice with IMQ-induced skin inflammation and skin from naïve mice using targeted proteomics. Our findings reveal a significant increase in the abundance of MMP-2, MMP-7, MMP-8, and MMP-13 after treatment with IMQ compared to the control skin, while MMP-3, MMP-9, and MMP-10 were exclusively detected in the IMQ-treated skin. The increased abundance and broader representation of MMPs in the IMQ-treated skin provide valuable insight into the pathophysiology of skin inflammation in the IMQ model, adding to previous studies on cytokine levels using conventional immunochemical methods. Specifically, the changes in the MMP profiles observed in the IMQ-treated skin resemble the MMP patterns found in skin lesions of individuals with psoriasis. Ultimately, the differences in MMP abundance under IMQ-induced inflammation as compared to non-inflamed control skin can be exploited as a model to investigate drug efficacy or performance of drug delivery systems.
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Affiliation(s)
- Heidi Kyung Noddeland
- LEO Foundation Center for Cutaneous Drug Delivery, Department of Pharmacy, University of Copenhagen, 2100, Copenhagen, Denmark; Explorative Formulation & Technologies, CMC Design and Development, LEO Pharma A/S, 2750, Ballerup, Denmark
| | - Vahap Canbay
- Technical University of Denmark, Department of Biotechnology and Biomedicine, 2800, Kongens Lyngby, Denmark
| | - Marianne Lind
- Explorative Formulation & Technologies, CMC Design and Development, LEO Pharma A/S, 2750, Ballerup, Denmark
| | - Simonas Savickas
- Technical University of Denmark, Department of Biotechnology and Biomedicine, 2800, Kongens Lyngby, Denmark
| | - Louise Bastholm Jensen
- Explorative Formulation & Technologies, CMC Design and Development, LEO Pharma A/S, 2750, Ballerup, Denmark
| | - Karsten Petersson
- Explorative Formulation & Technologies, CMC Design and Development, LEO Pharma A/S, 2750, Ballerup, Denmark
| | - Martin Malmsten
- LEO Foundation Center for Cutaneous Drug Delivery, Department of Pharmacy, University of Copenhagen, 2100, Copenhagen, Denmark; Department of Physical Chemistry 1, University of Lund, SE-22100, Lund, Sweden
| | - Janne Koch
- Translational Sciences, Research and Early Development, LEO Pharma A/S, 2750, Ballerup, Denmark
| | - Ulrich Auf dem Keller
- Technical University of Denmark, Department of Biotechnology and Biomedicine, 2800, Kongens Lyngby, Denmark; ETH Zürich, Department of Biology, Institute of Molecular Health Sciences, 8093, Zürich, Switzerland
| | - Andrea Heinz
- LEO Foundation Center for Cutaneous Drug Delivery, Department of Pharmacy, University of Copenhagen, 2100, Copenhagen, Denmark.
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2
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Caselli L, Nylander T, Malmsten M. Neutron reflectometry as a powerful tool to elucidate membrane interactions of drug delivery systems. Adv Colloid Interface Sci 2024; 325:103120. [PMID: 38428362 DOI: 10.1016/j.cis.2024.103120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2023] [Revised: 02/26/2024] [Accepted: 02/27/2024] [Indexed: 03/03/2024]
Abstract
The last couple of decades have seen an explosion of novel colloidal drug delivery systems, which have been demonstrated to increase drug efficacy, reduce side-effects, and provide various other advantages for both small-molecule and biomacromolecular drugs. The interactions of delivery systems with biomembranes are increasingly recognized to play a key role for efficient eradication of pathogens and cancer cells, as well as for intracellular delivery of protein and nucleic acid drugs. In parallel, there has been a broadening of methodologies for investigating such systems. For example, advanced microscopy, mass-spectroscopic "omic"-techniques, as well as small-angle X-ray and neutron scattering techniques, which only a few years ago were largely restricted to rather specialized areas within basic research, are currently seeing increased interest from researchers within wide application fields. In the present discussion, focus is placed on the use of neutron reflectometry to investigate membrane interactions of colloidal drug delivery systems. Although the technique is still less extensively employed for investigations of drug delivery systems than, e.g., X-ray scattering, such studies may provide key mechanistic information regarding membrane binding, re-modelling, translocation, and permeation, of key importance for efficacy and toxicity of antimicrobial, cancer, and other therapeutics. In the following, examples of this are discussed and gaps/opportunities in the research field identified.
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Affiliation(s)
| | - Tommy Nylander
- Physical Chemistry 1, Lund University, S-221 00 Lund, Sweden
| | - Martin Malmsten
- Physical Chemistry 1, Lund University, S-221 00 Lund, Sweden; Department of Pharmacy, University of Copenhagen, DK-2100 Copenhagen, Denmark.
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3
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Caselli L, Parra-Ortiz E, Micciulla S, Skoda MWA, Häffner SM, Nielsen EM, van der Plas MJA, Malmsten M. Boosting Membrane Interactions and Antimicrobial Effects of Photocatalytic Titanium Dioxide Nanoparticles by Peptide Coating. Small 2024:e2309496. [PMID: 38402437 DOI: 10.1002/smll.202309496] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/19/2023] [Revised: 01/30/2024] [Indexed: 02/26/2024]
Abstract
Photocatalytic nanoparticles offer antimicrobial effects under illumination due to the formation of reactive oxygen species (ROS), capable of degrading bacterial membranes. ROS may, however, also degrade human cell membranes and trigger toxicity. Since antimicrobial peptides (AMPs) may display excellent selectivity between human cells and bacteria, these may offer opportunities to effectively "target" nanoparticles to bacterial membranes for increased selectivity. Investigating this, photocatalytic TiO2 nanoparticles (NPs) are coated with the AMP LL-37, and ROS generation is found by C11 -BODIPY to be essentially unaffected after AMP coating. Furthermore, peptide-coated TiO2 NPs retain their positive ζ-potential also after 1-2 h of UV illumination, showing peptide degradation to be sufficiently limited to allow peptide-mediated targeting. In line with this, quartz crystal microbalance measurements show peptide coating to promote membrane binding of TiO2 NPs, particularly so for bacteria-like anionic and cholesterol-void membranes. As a result, membrane degradation during illumination is strongly promoted for such membranes, but not so for mammalian-like membranes. The mechanisms of these effects are elucidated by neutron reflectometry. Analogously, LL-37 coating promoted membrane rupture by TiO2 NPs for Gram-negative and Gram-positive bacteria, but not for human monocytes. These findings demonstrate that AMP coating may selectively boost the antimicrobial effects of photocatalytic NPs.
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Affiliation(s)
- Lucrezia Caselli
- Department of Pharmacy, University of Copenhagen, Copenhagen, DK-2100, Denmark
- Department of Physical Chemistry 1, Lund University, Lund, SE-22100, Sweden
| | - Elisa Parra-Ortiz
- Department of Pharmacy, University of Copenhagen, Copenhagen, DK-2100, Denmark
- Novonesis, Biologiens Vej 2, Lyngby, DK-2800 Kgs, Denmark
| | - Samantha Micciulla
- Institut Laue-Langevin, CS 20156, Grenoble Cedex 9, 38042, France
- Laboratoire Interdisciplinaire de Physique (LIPhy), Saint Martin d'Hères, 38402, France
- Centre National de la Recherche Scientifique (CNRS), Saint-Martin-d'Hères, Auvergne-Rhône-Alpes, France
| | - Maximilian W A Skoda
- ISIS Pulsed Neutron and Muon Source, Rutherford Appleton Laboratory, Harwell, OX11 0QX, UK
| | - Sara Malekkhaiat Häffner
- Department of Pharmacy, University of Copenhagen, Copenhagen, DK-2100, Denmark
- RISE Research Institutes of Sweden, Malvinas väg 3, Stockholm, 114 86, Sweden
| | | | | | - Martin Malmsten
- Department of Pharmacy, University of Copenhagen, Copenhagen, DK-2100, Denmark
- Department of Physical Chemistry 1, Lund University, Lund, SE-22100, Sweden
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Puthia M, Petrlova J, Petruk G, Butrym M, Samsudin F, Andersson MÅ, Strömdahl AC, Wasserstrom S, Hartman E, Kjellström S, Caselli L, Klementieva O, Bond PJ, Malmsten M, Raina DB, Schmidtchen A. Bioactive Suture with Added Innate Defense Functionality for the Reduction of Bacterial Infection and Inflammation. Adv Healthc Mater 2023; 12:e2300987. [PMID: 37689972 DOI: 10.1002/adhm.202300987] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2023] [Revised: 09/04/2023] [Indexed: 09/11/2023]
Abstract
Surgical site infections (SSI) are a clinical and economic burden. Suture-associated SSI may develop when bacteria colonize the suture surface and form biofilms that are resistant to antibiotics. Thrombin-derived C-terminal peptide (TCP)-25 is a host defense peptide with a unique dual mode of action that can target both bacteria and the excessive inflammation induced by bacterial products. The peptide demonstrates therapeutic potential in preclinical in vivo wound infection models. In this study, the authors set out to explore whether TCP-25 can provide a new bioactive innate immune feature to hydrophilic polyglactin sutures (Vicryl). Using a combination of biochemical, biophysical, antibacterial, biofilm, and anti-inflammatory assays in vitro, in silico molecular modeling studies, along with experimental infection and inflammation models in mice, a proof-of-concept that TCP-25 can provide Vicryl sutures with a previously undisclosed host defense capacity, that enables targeting of bacteria, biofilms, and the accompanying inflammatory response, is shown.
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Affiliation(s)
- Manoj Puthia
- Division of Dermatology and Venereology, Department of Clinical Sciences, Lund University, Lund, SE-22184, Sweden
| | - Jitka Petrlova
- Division of Dermatology and Venereology, Department of Clinical Sciences, Lund University, Lund, SE-22184, Sweden
| | - Ganna Petruk
- Division of Dermatology and Venereology, Department of Clinical Sciences, Lund University, Lund, SE-22184, Sweden
| | - Marta Butrym
- Division of Dermatology and Venereology, Department of Clinical Sciences, Lund University, Lund, SE-22184, Sweden
| | - Firdaus Samsudin
- Bioinformatics Institute (BII), Agency for Science, Technology and Research (A*STAR), Singapore, 138671, Singapore
| | - Madelene Å Andersson
- Division of Dermatology and Venereology, Department of Clinical Sciences, Lund University, Lund, SE-22184, Sweden
| | - Ann-Charlotte Strömdahl
- Division of Dermatology and Venereology, Department of Clinical Sciences, Lund University, Lund, SE-22184, Sweden
| | | | - Erik Hartman
- Division of Dermatology and Venereology, Department of Clinical Sciences, Lund University, Lund, SE-22184, Sweden
| | - Sven Kjellström
- Division of Mass Spectrometry, Department of Clinical Sciences, Lund University, Lund, SE-22184, Sweden
| | | | - Oxana Klementieva
- Medical Microspectroscopy Lab, Department of Experimental Medical Sciences, Faculty of Medicine, Lund University, Lund, SE-221 84, Sweden
| | - Peter J Bond
- Bioinformatics Institute (BII), Agency for Science, Technology and Research (A*STAR), Singapore, 138671, Singapore
- Department of Biological Sciences, National University of Singapore, Singapore, 117543, Singapore
| | - Martin Malmsten
- Physical Chemistry 1, Lund University, Lund, S-221 00, Sweden
- Department of Pharmacy, University of Copenhagen, Copenhagen, DK-2100, Denmark
| | - Deepak Bushan Raina
- Department of Clinical Sciences Lund, Orthopedics, Faculty of Medicine, Lund University, Lund, SE-221 84, Sweden
| | - Artur Schmidtchen
- Division of Dermatology and Venereology, Department of Clinical Sciences, Lund University, Lund, SE-22184, Sweden
- Dermatology, Skane University Hospital, Lund, SE-22185, Sweden
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Caselli L, Rodrigues GR, Franco OL, Malmsten M. Pulmonary delivery systems for antimicrobial peptides. Crit Rev Biotechnol 2023:1-18. [PMID: 37731338 DOI: 10.1080/07388551.2023.2254932] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2023] [Accepted: 07/17/2023] [Indexed: 09/22/2023]
Abstract
Bacterial infections of the respiratory tract cause millions of deaths annually. Several diseases exist wherein (1) bacterial infection is the main cause of disease (e.g., tuberculosis and bacterial pneumonia), (2) bacterial infection is a consequence of disease and worsens the disease prognosis (e.g., cystic fibrosis), and (3) bacteria-triggered inflammation propagates the disease (e.g., chronic obstructive pulmonary disease). Current approaches to combat infections generally include long and aggressive antibiotic treatments, which challenge patient compliance, thereby making relapses common and contributing to the development of antibiotic resistance. Consequently, the proportion of infections that cannot be treated with conventional antibiotics is rapidly increasing, and novel therapies are urgently needed. In this context, antimicrobial peptides (AMPs) have received considerable attention as they may exhibit potent antimicrobial effects against antibiotic-resistant bacterial strains but with modest toxicity. In addition, some AMPs suppress inflammation and provide other host defense functions (motivating the alternative term host defense peptides (HDPs)). However, the delivery of AMPs is complicated because they are large, positively charged, and amphiphilic. As a result of this, AMP delivery systems have recently attracted attention. For airway infections, the currently investigated delivery approaches range from aerosols and dry powders to various self-assembly and nanoparticle carrier systems, as well as their combinations. In this paper, we discuss recent developments in the field, ranging from mechanistic mode-of-action studies to the application of these systems for combating bacterial infections in the airways.
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Affiliation(s)
| | - Gisele R Rodrigues
- Centro de Análises Proteômicas e Bioquímicas, Pós-Graduação em Ciências Genômicas e Biotecnologia, Universidade Católica de Brasília, Brasília, Brazil
| | - Octavio L Franco
- Centro de Análises Proteômicas e Bioquímicas, Pós-Graduação em Ciências Genômicas e Biotecnologia, Universidade Católica de Brasília, Brasília, Brazil
- S-inova Biotech, Programa de Pós-Graduação em Biotecnologia, Universidade Católica Dom Bosco, Campo Grande, Brazil
| | - Martin Malmsten
- Physical Chemistry 1, University of Lund, Lund, Sweden
- Department of Pharmacy, University of Copenhagen, Copenhagen, Denmark
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Noddeland HK, Lind M, Petersson K, Caruso F, Malmsten M, Heinz A. Protease-Responsive Hydrogel Microparticles for Intradermal Drug Delivery. Biomacromolecules 2023. [PMID: 37307231 DOI: 10.1021/acs.biomac.3c00265] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Protease-responsive multi-arm polyethylene glycol-based microparticles with biscysteine peptide crosslinkers (CGPGG↓LAGGC) were obtained for intradermal drug delivery through inverse suspension photopolymerization. The average size of the spherical hydrated microparticles was ∼40 μm after crosslinking, making them attractive as a skin depot and suitable for intradermal injections, as they are readily dispensable through 27G needles. The effects of exposure to matrix metalloproteinase 9 (MMP-9) on the microparticles were evaluated by scanning electron microscopy and atomic force microscopy, demonstrating partial network destruction and decrease in elastic moduli. Given the recurring course of many skin diseases, the microparticles were exposed to MMP-9 in a flare-up mimicking fashion (multiple-time exposure), showing a significant increase in release of tofacitinib citrate (TC) from the MMP-responsive microparticles, which was not seen for the non-responsive microparticles (polyethylene glycol dithiol crosslinker). It was found that the degree of multi-arm complexity of the polyethylene glycol building blocks can be utilized to tune not only the release profile of TC but also the elastic moduli of the hydrogel microparticles, with Young's moduli ranging from 14 to 140 kPa going from 4-arm to 8-arm MMP-responsive microparticles. Finally, cytotoxicity studies conducted with skin fibroblasts showed no reduction in metabolic activity after 24 h exposure to the microparticles. Overall, these findings demonstrate that protease-responsive microparticles exhibit the properties of interest for intradermal drug delivery.
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Affiliation(s)
- Heidi K Noddeland
- LEO Foundation Center for Cutaneous Drug Delivery, Department of Pharmacy, University of Copenhagen, 2100 Copenhagen, Denmark
- Explorative Formulation & Technologies, CMC Design and Development, LEO Pharma A/S, 2750 Ballerup, Denmark
| | - Marianne Lind
- Explorative Formulation & Technologies, CMC Design and Development, LEO Pharma A/S, 2750 Ballerup, Denmark
| | - Karsten Petersson
- Explorative Formulation & Technologies, CMC Design and Development, LEO Pharma A/S, 2750 Ballerup, Denmark
| | - Frank Caruso
- Department of Chemical Engineering, The University of Melbourne, Parkville, Victoria 3010, Australia
| | - Martin Malmsten
- LEO Foundation Center for Cutaneous Drug Delivery, Department of Pharmacy, University of Copenhagen, 2100 Copenhagen, Denmark
- Department of Physical Chemistry 1, University of Lund, SE-22100 Lund, Sweden
| | - Andrea Heinz
- LEO Foundation Center for Cutaneous Drug Delivery, Department of Pharmacy, University of Copenhagen, 2100 Copenhagen, Denmark
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Xu Y, Parra-Ortiz E, Wan F, Cañadas O, Garcia-Alvarez B, Thakur A, Franzyk H, Pérez-Gil J, Malmsten M, Foged C. Insights into the mechanisms of interaction between inhalable lipid-polymer hybrid nanoparticles and pulmonary surfactant. J Colloid Interface Sci 2023; 633:511-525. [PMID: 36463820 DOI: 10.1016/j.jcis.2022.11.059] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2022] [Revised: 10/15/2022] [Accepted: 11/11/2022] [Indexed: 11/16/2022]
Abstract
Pulmonary delivery of small interfering RNA (siRNA) using nanoparticle-based delivery systems is promising for local treatment of respiratory diseases. We designed dry powder inhaler formulations of siRNA-loaded lipid-polymer hybrid nanoparticles (LPNs) with aerosolization properties optimized for inhalation therapy. Interactions between LPNs and pulmonary surfactant (PS) determine the fate of inhaled LPNs, but interaction mechanisms are unknown. Here we used surface-sensitive techniques to study how physicochemical properties and pathological microenvironments influence interactions between siRNA-loaded LPNs and supported PS layers. PS was deposited on SiO2 surfaces as single bilayer or multilayers and characterized using quartz crystal microbalance with dissipation monitoring and Fourier-transform infrared spectroscopy with attenuated total reflection. Immobilization of PS as multilayers, resembling the structural PS organization in the alveolar subphase, effectively reduced the relative importance of interactions between PS and the underlying surface. However, the binding affinity between PS and LPNs was identical in the two models. The physicochemical LPN properties influenced the translocation pathways and retention time of LPNs. Membrane fluidity and electrostatic interactions were decisive for the interaction strength between LPNs and PS. Experimental conditions reflecting pathological microenvironments promoted LPN deposition. Hence, these results shed new light on design criteria for LPN transport through the air-blood barrier.
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Affiliation(s)
- You Xu
- Department of Pharmacy, Faculty of Health and Medical Sciences, University of Copenhagen, Universitetsparken 2, DK-2100 Copenhagen Ø, Denmark
| | - Elisa Parra-Ortiz
- Department of Pharmacy, Faculty of Health and Medical Sciences, University of Copenhagen, Universitetsparken 2, DK-2100 Copenhagen Ø, Denmark
| | - Feng Wan
- Department of Pharmacy, Faculty of Health and Medical Sciences, University of Copenhagen, Universitetsparken 2, DK-2100 Copenhagen Ø, Denmark
| | - Olga Cañadas
- Department of Biochemistry and Molecular Biology, Faculty of Biology, Complutense University, 28040 Madrid, Spain; Research Institute "Hospital 12 de Octubre (imas12)", Madrid, Spain
| | - Begoña Garcia-Alvarez
- Research Institute "Hospital 12 de Octubre (imas12)", Madrid, Spain; Department of Biochemistry and Molecular Biology, Faculty of Chemistry, Complutense University, 28040 Madrid, Spain
| | - Aneesh Thakur
- Department of Pharmacy, Faculty of Health and Medical Sciences, University of Copenhagen, Universitetsparken 2, DK-2100 Copenhagen Ø, Denmark
| | - Henrik Franzyk
- Department of Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen, Jagtvej 162, 2100 Copenhagen Ø, Denmark
| | - Jesús Pérez-Gil
- Department of Biochemistry and Molecular Biology, Faculty of Biology, Complutense University, 28040 Madrid, Spain; Research Institute "Hospital 12 de Octubre (imas12)", Madrid, Spain
| | - Martin Malmsten
- Department of Pharmacy, Faculty of Health and Medical Sciences, University of Copenhagen, Universitetsparken 2, DK-2100 Copenhagen Ø, Denmark; Department of Physical Chemistry 1, University of Lund, SE-22100 Lund, Sweden
| | - Camilla Foged
- Department of Pharmacy, Faculty of Health and Medical Sciences, University of Copenhagen, Universitetsparken 2, DK-2100 Copenhagen Ø, Denmark.
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Perini DA, Parra-Ortiz E, Varó I, Queralt-Martin M, Malmsten M, Alcaraz A. Surface-functionalized polystyrene nanoparticles alter transmembrane potential via ion-selective pores maintaining global bilayer integrity. Biophys J 2023; 122:221a-222a. [PMID: 36783081 DOI: 10.1016/j.bpj.2022.11.1318] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/12/2023] Open
Affiliation(s)
| | - Elisa Parra-Ortiz
- Department of Pharmacy, University of Copenhagen, Copenhagen, Denmark
| | - Inmaculada Varó
- Institute of Aquaculture Torre de la Sal (IATS-CSIC), Castellon, Spain
| | | | - Martin Malmsten
- Department of Pharmacy, University of Copenhagen, Copenhagen, Denmark
| | - Antonio Alcaraz
- Department of Physics, Universitat Jaume I, Castellón, Spain
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Noddeland HK, Lind M, Jensen LB, Petersson K, Skak-Nielsen T, Larsen FH, Malmsten M, Heinz A. Design and characterization of matrix metalloproteinase-responsive hydrogels for the treatment of inflammatory skin diseases. Acta Biomater 2023; 157:149-161. [PMID: 36526241 DOI: 10.1016/j.actbio.2022.12.015] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2022] [Revised: 11/23/2022] [Accepted: 12/07/2022] [Indexed: 12/15/2022]
Abstract
Enzyme-responsive hydrogels, formed by step growth photopolymerization of biscysteine peptide linkers with alkene functionalized polyethylene glycol, provide interesting opportunities as biomaterials and drug delivery systems. In this study, we developed stimuli-responsive, specific, and cytocompatible hydrogels for delivery of anti-inflammatory drugs for the treatment of inflammatory skin diseases. We designed peptide linkers with optimized sensitivity towards matrix metalloproteinases, a family of proteolytic enzymes overexpressed in the extracellular matrix of the skin during inflammation. The peptide linkers were crosslinked with branched 4-arm and 8-arm polyethylene glycols by thiol-norbornene photopolymerization, leading to the formation of a hydrogel network, in which the anti-inflammatory Janus kinase inhibitor tofacitinib citrate was incorporated. The hydrogels were extensively characterized by physical properties, in vitro release studies, cytocompatibility with fibroblasts, and anti-inflammatory efficacy testing in both an atopic dermatitis-like keratinocyte assay and an activated T-cell assay. The drug release was studied after single and multiple-time exposure to matrix metalloproteinase 9 to mimic inflammatory flare-ups. Drug release was found to be triggered by matrix metalloproteinase 9 and to depend on type of crosslinker and of the polyethylene glycol polymer, due to differences in architecture and swelling behavior. Moreover, swollen hydrogels showed elastic properties similar to those of extracellular matrix proteins in the dermis. Cell studies revealed limited cytotoxicity when fibroblasts and keratinocytes were exposed to the hydrogels or their enzymatic cleavage products. Taken together, our results suggest multi-arm polyethylene glycol hydrogels as promising matrix metalloproteinase-responsive drug delivery systems, with potential in the treatment of inflammatory skin disease. STATEMENT OF SIGNIFICANCE: Smart responsive drug delivery systems such as matrix metalloproteinase-responsive hydrogels are excellent candidates for the treatment of inflammatory skin diseases including psoriasis. Their release profile can be optimized to correspond to the patient's individual disease state by tuning formulation parameters and disease-related stimuli, providing personalized treatment solutions. However, insufficient cross-linking efficiency, low matrix metalloproteinase sensitivity, and undesirable drug release kinetics remain major challenges in the development of such drug delivery systems. In this study, we address shortcomings of previous work by designing peptide linkers with optimized sensitivity towards matrix metalloproteinases and high cross-linking efficiencies. We further provide a proof-of-concept for the usability of the hydrogels in inflammatory skin conditions by employing a drug release set-up simulating inflammatory flare-ups.
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Affiliation(s)
- Heidi Kyung Noddeland
- LEO Foundation Center for Cutaneous Drug Delivery, Department of Pharmacy, University of Copenhagen, 2100 Copenhagen, Denmark; Explorative Formulation & Technologies, CMC Design and Development, LEO Pharma A/S, 2750 Ballerup, Denmark
| | - Marianne Lind
- Explorative Formulation & Technologies, CMC Design and Development, LEO Pharma A/S, 2750 Ballerup, Denmark
| | - Louise Bastholm Jensen
- Explorative Formulation & Technologies, CMC Design and Development, LEO Pharma A/S, 2750 Ballerup, Denmark
| | - Karsten Petersson
- Explorative Formulation & Technologies, CMC Design and Development, LEO Pharma A/S, 2750 Ballerup, Denmark
| | - Tine Skak-Nielsen
- Cells & Assays, In vitro Biology, LEO Pharma A/S, 2750 Ballerup, Denmark
| | - Flemming Hofmann Larsen
- Advanced Analytical and Structural Chemistry, CMC Design and Development, LEO Pharma A/S, 2750 Ballerup, Denmark
| | - Martin Malmsten
- LEO Foundation Center for Cutaneous Drug Delivery, Department of Pharmacy, University of Copenhagen, 2100 Copenhagen, Denmark; Department of Physical Chemistry 1, University of Lund, SE-22100 Lund, Sweden
| | - Andrea Heinz
- LEO Foundation Center for Cutaneous Drug Delivery, Department of Pharmacy, University of Copenhagen, 2100 Copenhagen, Denmark.
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Xie M, Gao M, Yun Y, Malmsten M, Rotello VM, Zboril R, Akhavan O, Kraskouski A, Amalraj J, Cai X, Lu J, Zheng H, Li R. Antibacterial Nanomaterials: Mechanisms, Impacts on Antimicrobial Resistance and Design Principles. Angew Chem Int Ed Engl 2023. [DOI: 10.1002/ange.202217345] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Affiliation(s)
- Maomao Xie
- Soochow University School for Radiological and Interdisciplinary Sciences (RAD-X) 215123 Suzhou CHINA
| | - Meng Gao
- Soochow University School for Radiological and Interdisciplinary Sciences (RAD-X) 215123 Suzhou CHINA
| | - Yang Yun
- Shanxi University College of Environmental & Resource Sciences 030006 Taiyuan CHINA
| | - Martin Malmsten
- University of Copenhagen: Kobenhavns Universitet Department of Pharmacy Copenhagen DENMARK
| | - Vincent M. Rotello
- University of Massachusetts Amherst Department of Chemistry Amherst UNITED STATES
| | - Radek Zboril
- Palacky University Olomouc: Univerzita Palackeho v Olomouci Czech Advanced Technology and Research Institute (CATRIN) Olomouc CZECH REPUBLIC
| | - Omid Akhavan
- Condensed Matter National Laboratory Condensed Matter National Laboratory 1956838861 Tehran IRAN (ISLAMIC REPUBLIC OF)
| | - Aliaksandr Kraskouski
- Institute of Chemistry of New Materials NAS Belarus: GNU Institut himii novyh materialov Nacional'noj akademii nauk Belarusi Department of Physicochemistry of Thin Film Materials Minsk BELARUS
| | - John Amalraj
- Universidad de Talca Instituto de Química de Recursos Naturales Talca CHILE
| | - Xiaoming Cai
- Soochow University School of Public Health 215123 Suzhou CHINA
| | - Jianmei Lu
- Soochow University College of Chemistry 215123 Suzhou CHINA
| | - Huizhen Zheng
- Soochow University School for Radiological and Interdisciplinary Sciences (RAD-X) 215123 Suzhou CHINA
| | - Ruibin Li
- Soochow University School for Radiological and Interdisciplinary Science 199# Ren-ai Road401 Building, 1307 Room 215123 Suzhou CHINA
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11
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Xie M, Gao M, Yun Y, Malmsten M, Rotello VM, Zboril R, Akhavan O, Kraskouski A, Amalraj J, Cai X, Lu J, Zheng H, Li R. Antibacterial Nanomaterials: Mechanisms, Impacts on Antimicrobial Resistance and Design Principles. Angew Chem Int Ed Engl 2023; 62:e202217345. [PMID: 36718001 DOI: 10.1002/anie.202217345] [Citation(s) in RCA: 22] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2022] [Revised: 01/27/2023] [Accepted: 01/30/2023] [Indexed: 02/01/2023]
Abstract
Antimicrobial resistance (AMR) is one of the biggest threats to the environment and health. AMR rapidly invalidates conventional antibiotics, and antimicrobial nanomaterials have been increasingly explored as alternatives. Interestingly, several antimicrobial nanomaterials show AMR-independent antimicrobial effects without detectable new resistance and have therefore been suggested to prevent AMR evolution. In contrast, some are found to trigger the evolution of AMR. Given these seemingly conflicting findings, a timely discussion of the two faces of antimicrobial nanomaterials is urgently needed. This review systematically compares the killing mechanisms and structure-activity relationships of antibiotics and antimicrobial nanomaterials. We then focus on nano-microbe interactions to elucidate the impacts of molecular initiating events on AMR evolution. Finally, we provide an outlook on future antimicrobial nanomaterials and propose design principles for the prevention of AMR evolution.
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Affiliation(s)
- Maomao Xie
- State Key Laboratory of Radiation Medicine and Protection, School for Radiological and Interdisciplinary Sciences (RAD-X), Collaborative Innovation Center of Radiological Medicine of Jiangsu Higher Education Institutions, Suzhou Medical College, Soochow University, Suzhou, 215123, Jiangsu, China
| | - Meng Gao
- State Key Laboratory of Radiation Medicine and Protection, School for Radiological and Interdisciplinary Sciences (RAD-X), Collaborative Innovation Center of Radiological Medicine of Jiangsu Higher Education Institutions, Suzhou Medical College, Soochow University, Suzhou, 215123, Jiangsu, China
| | - Yang Yun
- College of Environmental & Resource Sciences, Shanxi University, Taiyuan, 030006, Shanxi, China
| | - Martin Malmsten
- Department of Pharmacy, University of Copenhagen, 2100, Copenhagen, Denmark.,Department of Physical Chemistry 1, University of Lund, 22100, Lund, Sweden
| | - Vincent M Rotello
- Department of Chemistry, University of Massachusetts Amherst, 710 N. Pleasant St., Amherst, USA
| | - Radek Zboril
- Regional Centre of Advanced Technologies and Materials, Czech Advanced Technology and Research Institute (CATRIN), Palacký University Olomouc, Šlechtitelů 241/27, Olomouc, 783 71, Czech Republic.,Nanotechnology Centre, Centre of Energy and Environmental Technologies, VŠB-Technical University of Ostrava, 17. listopadu 2172/15, Ostrava-Poruba, 708 00, Czech Republic
| | - Omid Akhavan
- Condensed Matter National Laboratory, P.O. Box 1956838861, Tehran, Iran
| | - Aliaksandr Kraskouski
- Department of Physicochemistry of Thin Film Materials, Institute of Chemistry of New Materials of NAS of Belarus, 36 F. Skaryna Str., 220084, Minsk, Belarus
| | - John Amalraj
- Laboratory of Materials Science, Instituto de Química de Recursos Naturales, Universidad de Talca, P.O. Box 747, Talca, Chile
| | - Xiaoming Cai
- School of Public Health, Suzhou Medical College, Soochow University, Suzhou, Jiangsu, 215123, China
| | - Jianmei Lu
- College of Chemistry, Chemical Engineering and Materials Science, National Center for International Research on Intelligent Nano-Materials and Detection Technology in Environmental Protection, Soochow University, Suzhou, 215123, China
| | - Huizhen Zheng
- State Key Laboratory of Radiation Medicine and Protection, School for Radiological and Interdisciplinary Sciences (RAD-X), Collaborative Innovation Center of Radiological Medicine of Jiangsu Higher Education Institutions, Suzhou Medical College, Soochow University, Suzhou, 215123, Jiangsu, China
| | - Ruibin Li
- State Key Laboratory of Radiation Medicine and Protection, School for Radiological and Interdisciplinary Sciences (RAD-X), Collaborative Innovation Center of Radiological Medicine of Jiangsu Higher Education Institutions, Suzhou Medical College, Soochow University, Suzhou, 215123, Jiangsu, China
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12
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Haffenden C, Fano E, Malmsten M, Börjeson L. Making and Using AI in the Library: Creating a BERT Model at the National Library of Sweden. CRL 2023. [DOI: 10.5860/crl.84.1.30] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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13
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Perini DA, Parra-Ortiz E, Varó I, Queralt-Martín M, Malmsten M, Alcaraz A. Surface-Functionalized Polystyrene Nanoparticles Alter the Transmembrane Potential via Ion-Selective Pores Maintaining Global Bilayer Integrity. Langmuir 2022; 38:14837-14849. [PMID: 36417698 PMCID: PMC9974068 DOI: 10.1021/acs.langmuir.2c02487] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
Although nanoplastics have well-known toxic effects toward the environment and living organisms, their molecular toxicity mechanisms, including the nature of nanoparticle-cell membrane interactions, are still under investigation. Here, we employ dynamic light scattering, quartz crystal microbalance with dissipation monitoring, and electrophysiology to investigate the interaction between polystyrene nanoparticles (PS NPs) and phospholipid membranes. Our results show that PS NPs adsorb onto lipid bilayers creating soft inhomogeneous films that include disordered defects. PS NPs form an integral part of the generated channels so that the surface functionalization and charge of the NP determine the pore conductive properties. The large difference in size between the NP diameter and the lipid bilayer thickness (∼60 vs ∼5 nm) suggests a particular and complex lipid-NP assembly that is able to maintain overall membrane integrity. In view of this, we suggest that NP-induced toxicity in cells could operate in more subtle ways than membrane disintegration, such as inducing lipid reorganization and transmembrane ionic fluxes that disrupt the membrane potential.
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Affiliation(s)
- D. Aurora Perini
- Laboratory
of Molecular Biophysics, Department of Physics, Universitat Jaume I, 12071Castellón, Spain
| | - Elisa Parra-Ortiz
- Department
of Pharmacy, University of Copenhagen, DK-2100Copenhagen, Denmark
| | - Inmaculada Varó
- Institute
of Aquaculture Torre de la Sal (IATS-CSIC), Ribera de Cabanes, 12595Castellón, Spain
| | - María Queralt-Martín
- Laboratory
of Molecular Biophysics, Department of Physics, Universitat Jaume I, 12071Castellón, Spain
| | - Martin Malmsten
- Department
of Pharmacy, University of Copenhagen, DK-2100Copenhagen, Denmark
- Department
of Physical Chemistry 1, University of Lund, SE-22100Lund, Sweden
| | - Antonio Alcaraz
- Laboratory
of Molecular Biophysics, Department of Physics, Universitat Jaume I, 12071Castellón, Spain
- . Tel.: +34 964 72 8044
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14
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García-Mouton C, Parra-Ortiz E, Malmsten M, Cruz A, Pérez-Gil J. Pulmonary surfactant and drug delivery: vehiculization of a tryptophan-tagged antimicrobial peptide over the air-liquid interfacial highway. Eur J Pharm Biopharm 2022; 180:33-47. [PMID: 36154903 DOI: 10.1016/j.ejpb.2022.09.018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2022] [Revised: 08/31/2022] [Accepted: 09/18/2022] [Indexed: 11/04/2022]
Abstract
This work evaluates interaction of pulmonary surfactant (PS) and antimicrobial peptides (AMPs) in order to investigate (i) if PS can be used to transport AMPs, and (ii) to what extent PS interferes with AMP function and vice versa. This, in turn, is motivated by a need to find new strategies to treat bacterial infections in the airways. Low respiratory tract infections (LRTIs) are a leading cause of illness and death worldwide that, together with the problem of multidrug-resistant (MDR) bacteria, bring to light the necessity of developing effective therapies that ensure high bioavailability of the drug at the site of infection and display a potent antimicrobial effect. Here, we propose the combination of AMPs with PS to improve their delivery, exemplified for the hydrophobically end-tagged AMP, GRR10W4 (GRRPRPRPRPWWWW-NH2), with previously demonstrated potent antimicrobial activity against a broad spectrum of bacteria under various conditions. Experiments using model systems emulating the respiratory interface and an operating alveolus, based on surface balances and bubble surfactometry, served to demonstrate that a fluorescently labelled version of GRR10W4 (GRR10W4-F), was able to interact and insert into PS membranes without affecting its biophysical function. Therefore, vehiculization of the peptide along air-liquid interfaces was enabled, even for interfaces previously occupied by surfactants layers. Furthermore, breathing-like compression-expansion dynamics promoted the interfacial release of GRR10W4-F after its delivery, which could further allow the peptide to perform its antimicrobial function. PS/GRR10W4-F formulations displayed greater antimicrobial effects and reduced toxicity on cultured airway epithelial cells compared to that of the peptide alone. Taken together, these results open the door to the development of novel delivery strategies for AMPs in order to increase the bioavailability of these molecules at the infection site via inhaled therapies.
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Affiliation(s)
- Cristina García-Mouton
- Department of Biochemistry and Molecular Biology, Faculty of Biology, and Research Institute "Hospital 12 de Octubre (imas12)", Complutense University, 28040 Madrid, Spain
| | - Elisa Parra-Ortiz
- Department of Pharmacy, University of Copenhagen, DK-2100 Copenhagen, Denmark
| | - Martin Malmsten
- Department of Pharmacy, University of Copenhagen, DK-2100 Copenhagen, Denmark; Department of Physical Chemistry 1, University of Lund, SE-22100 Lund, Sweden
| | - Antonio Cruz
- Department of Biochemistry and Molecular Biology, Faculty of Biology, and Research Institute "Hospital 12 de Octubre (imas12)", Complutense University, 28040 Madrid, Spain
| | - Jesús Pérez-Gil
- Department of Biochemistry and Molecular Biology, Faculty of Biology, and Research Institute "Hospital 12 de Octubre (imas12)", Complutense University, 28040 Madrid, Spain.
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15
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Parra-Ortiz E, Caselli L, Agnoletti M, Skoda MWA, Li X, Zhao D, Malmsten M. Mesoporous silica as a matrix for photocatalytic titanium dioxide nanoparticles: lipid membrane interactions. Nanoscale 2022; 14:12297-12312. [PMID: 35960150 DOI: 10.1039/d2nr01958b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
In the present study, we investigate the combined interaction of mesoporous silica (SiO2) and photocatalytic titanium dioxide (TiO2) nanoparticles with lipid membranes, using neutron reflectometry (NR), cryo-transmission electron microscopy (cryo-TEM), fluorescence oxidation assays, dynamic light scattering (DLS), and ζ-potential measurements. Based on DLS, TiO2 nanoparticles were found to display strongly improved colloidal stability at physiological pH of skin (pH 5.4) after incorporation into either smooth or spiky ("virus-like") mesoporous silica nanoparticles at low pH, the latter demonstrated by cryo-TEM. At the same time, such matrix-bound TiO2 nanoparticles retain their ability to destabilize anionic bacteria-mimicking lipid membranes under UV-illumination. Quenching experiments indicated both hydroxyl and superoxide radicals to contribute to this, while NR showed that free TiO2 nanoparticles and TiO2 loaded into mesoporous silica nanoparticles induced comparable effects on supported lipid membranes, including membrane thinning, lipid removal, and formation of a partially disordered outer membrane leaflet. By comparing effects for smooth and virus-like mesoporous nanoparticles as matrices for TiO2 nanoparticles, the interplay between photocatalytic and direct membrane binding effects were elucidated. Taken together, the study outlines how photocatalytic nanoparticles can be readily incorporated into mesoporous silica nanoparticles for increased colloidal stability and yet retain most of their capacity for photocatalytic destabilization of lipid membranes, and with maintained mechanisms for oxidative membrane destabilization. As such, the study provides new mechanistic information to the widely employed, but poorly understood, practice of loading photocatalytic nanomaterials onto/into matrix materials for increased performance.
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Affiliation(s)
- Elisa Parra-Ortiz
- Department of Pharmacy, University of Copenhagen, DK-2100 Copenhagen, Denmark.
| | - Lucrezia Caselli
- Department of Pharmacy, University of Copenhagen, DK-2100 Copenhagen, Denmark.
| | - Monica Agnoletti
- Department of Pharmacy, University of Copenhagen, DK-2100 Copenhagen, Denmark.
| | - Maximilian W A Skoda
- ISIS Pulsed Neutron and Muon Source, Rutherford Appleton Laboratory, OX11 0QX Harwell, Oxfordshire, UK
| | - Xiaomin Li
- Department of Chemistry, Collaborative Innovation Center of Chemistry for Energy Materials, State Key Laboratory of Molecular Engineering of Polymers, Fudan University, 200433 Shanghai, P. R. China
| | - Dongyuan Zhao
- Department of Chemistry, Collaborative Innovation Center of Chemistry for Energy Materials, State Key Laboratory of Molecular Engineering of Polymers, Fudan University, 200433 Shanghai, P. R. China
| | - Martin Malmsten
- Department of Pharmacy, University of Copenhagen, DK-2100 Copenhagen, Denmark.
- Department of Physical Chemistry 1, University of Lund, SE-22100 Lund, Sweden
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16
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Martin A, Nyman JN, Reinholdt R, Cai J, Schaedel AL, van der Plas MJA, Malmsten M, Rades T, Heinz A. In Situ Transformation of Electrospun Nanofibers into Nanofiber-Reinforced Hydrogels. Nanomaterials (Basel) 2022; 12:nano12142437. [PMID: 35889661 PMCID: PMC9318765 DOI: 10.3390/nano12142437] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/04/2022] [Revised: 07/12/2022] [Accepted: 07/14/2022] [Indexed: 11/16/2022]
Abstract
Nanofiber-reinforced hydrogels have recently gained attention in biomedical engineering. Such three-dimensional scaffolds show the mechanical strength and toughness of fibers while benefiting from the cooling and absorbing properties of hydrogels as well as a large pore size, potentially aiding cell migration. While many of such systems are prepared by complicated processes where fibers are produced separately to later be embedded in a hydrogel, we here provide proof of concept for a one-step solution. In more detail, we produced core-shell nanofibers from the natural proteins zein and gelatin by coaxial electrospinning. Upon hydration, the nanofibers were capable of directly transforming into a nanofiber-reinforced hydrogel, where the nanofibrous structure was retained by the zein core, while the gelatin-based shell turned into a hydrogel matrix. Our nanofiber-hydrogel composite showed swelling to ~800% of its original volume and water uptake of up to ~2500% in weight. The physical integrity of the nanofiber-reinforced hydrogel was found to be significantly improved in comparison to a hydrogel system without nanofibers. Additionally, tetracycline hydrochloride was incorporated into the fibers as an antimicrobial agent, and antimicrobial activity against Staphylococcus aureus and Escherichia coli was confirmed.
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Affiliation(s)
- Alma Martin
- LEO Foundation Center for Cutaneous Drug Delivery, Department of Pharmacy, University of Copenhagen, 2100 Copenhagen, Denmark; (A.M.); (J.N.N.); (R.R.); (J.C.); (A.-L.S.); (M.J.A.v.d.P.); (M.M.); (T.R.)
- School of Medicine, Nazarbayev University, Nur-Sultan 010000, Kazakhstan
| | - Jenny Natalie Nyman
- LEO Foundation Center for Cutaneous Drug Delivery, Department of Pharmacy, University of Copenhagen, 2100 Copenhagen, Denmark; (A.M.); (J.N.N.); (R.R.); (J.C.); (A.-L.S.); (M.J.A.v.d.P.); (M.M.); (T.R.)
| | - Rikke Reinholdt
- LEO Foundation Center for Cutaneous Drug Delivery, Department of Pharmacy, University of Copenhagen, 2100 Copenhagen, Denmark; (A.M.); (J.N.N.); (R.R.); (J.C.); (A.-L.S.); (M.J.A.v.d.P.); (M.M.); (T.R.)
| | - Jun Cai
- LEO Foundation Center for Cutaneous Drug Delivery, Department of Pharmacy, University of Copenhagen, 2100 Copenhagen, Denmark; (A.M.); (J.N.N.); (R.R.); (J.C.); (A.-L.S.); (M.J.A.v.d.P.); (M.M.); (T.R.)
| | - Anna-Lena Schaedel
- LEO Foundation Center for Cutaneous Drug Delivery, Department of Pharmacy, University of Copenhagen, 2100 Copenhagen, Denmark; (A.M.); (J.N.N.); (R.R.); (J.C.); (A.-L.S.); (M.J.A.v.d.P.); (M.M.); (T.R.)
| | - Mariena J. A. van der Plas
- LEO Foundation Center for Cutaneous Drug Delivery, Department of Pharmacy, University of Copenhagen, 2100 Copenhagen, Denmark; (A.M.); (J.N.N.); (R.R.); (J.C.); (A.-L.S.); (M.J.A.v.d.P.); (M.M.); (T.R.)
- Division of Dermatology and Venereology, Department of Clinical Sciences Lund, Lund University, S-22184 Lund, Sweden
| | - Martin Malmsten
- LEO Foundation Center for Cutaneous Drug Delivery, Department of Pharmacy, University of Copenhagen, 2100 Copenhagen, Denmark; (A.M.); (J.N.N.); (R.R.); (J.C.); (A.-L.S.); (M.J.A.v.d.P.); (M.M.); (T.R.)
- Department of Physical Chemistry, Lund University, 22100 Lund, Sweden
| | - Thomas Rades
- LEO Foundation Center for Cutaneous Drug Delivery, Department of Pharmacy, University of Copenhagen, 2100 Copenhagen, Denmark; (A.M.); (J.N.N.); (R.R.); (J.C.); (A.-L.S.); (M.J.A.v.d.P.); (M.M.); (T.R.)
| | - Andrea Heinz
- LEO Foundation Center for Cutaneous Drug Delivery, Department of Pharmacy, University of Copenhagen, 2100 Copenhagen, Denmark; (A.M.); (J.N.N.); (R.R.); (J.C.); (A.-L.S.); (M.J.A.v.d.P.); (M.M.); (T.R.)
- Correspondence:
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17
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Malmsten M. Expression of Concern: In situ preparation of g-C 3N 4 nanosheet/FeOCl: Achievement and promoted photocatalytic nitrogen fixation activity. J Colloid Interface Sci 2022; 616:929. [PMID: 35489806 DOI: 10.1016/j.jcis.2022.02.112] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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18
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Martin A, Cai J, Schaedel AL, van der Plas M, Malmsten M, Rades T, Heinz A. Zein-polycaprolactone core-shell nanofibers for wound healing. Int J Pharm 2022; 621:121809. [PMID: 35550408 DOI: 10.1016/j.ijpharm.2022.121809] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2022] [Revised: 04/28/2022] [Accepted: 05/05/2022] [Indexed: 12/13/2022]
Abstract
In a previous study, we developed electrospun antimicrobial microfiber scaffolds for wound healing composed of a core of zein protein and a shell containing polyethylene oxide. While providing a promising platform for composite nanofiber design, the scaffolds showed low tensile strengths, insufficient water stability, as well as burst release of the antimicrobial drug tetracycline hydrochloride, properties which are not ideal for the use of the scaffolds as wound dressings. Therefore, the aim of the present study was to develop fibers with enhanced mechanical strength and water stability, also displaying sustained release of tetracycline hydrochloride. Zein was chosen as core material, while the shell was formed by the hydrophobic polymer polycaprolactone, either alone or in combination with polyethylene oxide. As compared to control fibers of pristine polycaprolactone, the zein-polycaprolactone fibers exhibited a reduced diameter and hydrophobicity, which is beneficial for cell attachment and wound closure. Such fibers also demonstrated sustained release of tetracycline hydrochloride, as well as water stability, ductility, high mechanical strength and fibroblast attachment, hence representing a step towards the development of biodegradable wound dressings with prolonged drug release, which can be left on the wound for a longer time.
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Affiliation(s)
- Alma Martin
- LEO Foundation Center for Cutaneous Drug Delivery, Department of Pharmacy, University of Copenhagen, 2100 Copenhagen, Denmark; School of Medicine, Nazarbayev University, 010000 Nur-Sultan, Kazakhstan (current address)
| | - Jun Cai
- LEO Foundation Center for Cutaneous Drug Delivery, Department of Pharmacy, University of Copenhagen, 2100 Copenhagen, Denmark
| | - Anna-Lena Schaedel
- LEO Foundation Center for Cutaneous Drug Delivery, Department of Pharmacy, University of Copenhagen, 2100 Copenhagen, Denmark
| | - Mariena van der Plas
- LEO Foundation Center for Cutaneous Drug Delivery, Department of Pharmacy, University of Copenhagen, 2100 Copenhagen, Denmark; Division of Dermatology and Venereology, Department of Clinical Sciences Lund, Lund University, S-22184 Lund, Sweden
| | - Martin Malmsten
- LEO Foundation Center for Cutaneous Drug Delivery, Department of Pharmacy, University of Copenhagen, 2100 Copenhagen, Denmark; Department of Physical Chemistry, Lund University, S-221 00 Lund, Sweden
| | - Thomas Rades
- LEO Foundation Center for Cutaneous Drug Delivery, Department of Pharmacy, University of Copenhagen, 2100 Copenhagen, Denmark
| | - Andrea Heinz
- LEO Foundation Center for Cutaneous Drug Delivery, Department of Pharmacy, University of Copenhagen, 2100 Copenhagen, Denmark.
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19
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Aurora Perini D, Parra-Ortiz E, Varó I, Queralt-Martin M, Malmsten M, Alcaraz A. Interaction of polystyrene nanoparticles with phospholipid membranes induces ion channel-like activity. Biophys J 2022. [DOI: 10.1016/j.bpj.2021.11.361] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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20
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Parra-Ortiz E, Malmsten M. Photocatalytic nanoparticles - From membrane interactions to antimicrobial and antiviral effects. Adv Colloid Interface Sci 2022; 299:102526. [PMID: 34610862 DOI: 10.1016/j.cis.2021.102526] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2021] [Revised: 09/24/2021] [Accepted: 09/24/2021] [Indexed: 12/23/2022]
Abstract
As a result of increasing resistance among pathogens against antibiotics and anti-viral therapeutics, nanomaterials are attracting current interest as antimicrobial agents. Such materials offer triggered functionalities to combat challenging infections, based on either direct membrane action, effects of released ions, thermal shock induced by either light or magnetic fields, or oxidative photocatalysis. In the present overview, we focus on photocatalytic antimicrobial effects, in which light exposure triggers generation of reactive oxygen species. These, in turn, cause oxidative damage to key components in bacteria and viruses, including lipid membranes, lipopolysaccharides, proteins, and DNA/RNA. While an increasing body of studies demonstrate that potent antimicrobial effects can be achieved by photocatalytic nanomaterials, understanding of the mechanistic foundation underlying such effects is still in its infancy. Addressing this, we here provide an overview of the current understanding of the interaction of photocatalytic nanomaterials with pathogen membranes and membrane components, and how this translates into antibacterial and antiviral effects.
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Affiliation(s)
- Elisa Parra-Ortiz
- Department of Pharmacy, University of Copenhagen, DK-2100 Copenhagen, Denmark
| | - Martin Malmsten
- Department of Pharmacy, University of Copenhagen, DK-2100 Copenhagen, Denmark; Physical Chemistry 1, University of Lund, S-221 00 Lund, Sweden.
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21
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Malmsten M. Expression of concern. J Colloid Interface Sci 2021; 598:531. [PMID: 34051982 DOI: 10.1016/j.jcis.2021.03.100] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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22
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Ilyas H, van der Plas MJA, Agnoletti M, Kumar S, Mandal AK, Atreya HS, Bhunia A, Malmsten M. Effect of PEGylation on Host Defense Peptide Complexation with Bacterial Lipopolysaccharide. Bioconjug Chem 2021; 32:1729-1741. [PMID: 34282895 DOI: 10.1021/acs.bioconjchem.1c00259] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Conjugation with poly(ethylene glycol) ("PEGylation") is a widely used approach for improving the therapeutic propensities of peptide and protein drugs through prolonging bloodstream circulation, reducing toxicity and immunogenicity, and improving proteolytic stability. In the present study, we investigate how PEGylation affects the interaction of host defense peptides (HDPs) with bacterial lipopolysaccharide (LPS) as well as HDP suppression of LPS-induced cell activation. In particular, we investigate the effects of PEGylation site for KYE28 (KYEITTIHNLFRKLTHRLFRRNFGYTLR), a peptide displaying potent anti-inflammatory effects, primarily provided by its N-terminal part. PEGylation was performed either in the N-terminus, the C-terminus, or in both termini, keeping the total number of ethylene groups (n = 48) constant. Ellipsometry showed KYE28 to exhibit pronounced affinity to both LPS and its hydrophobic lipid A moiety. The PEGylated peptide variants displayed lower, but comparable, affinity for both LPS and lipid A, irrespective of the PEGylation site. Furthermore, both KYE28 and its PEGylated variants triggered LPS aggregate disruption. To investigate the peptide structure in such LPS complexes, a battery of nuclear magnetic resonance (NMR) methods was employed. From this, it was found that KYE28 formed a well-folded structure after LPS binding, stabilized by hydrophobic domains involving aromatic amino acids as well as by electrostatic interactions. In contrast, the PEGylated peptide variants displayed a less well-defined secondary structure, suggesting weaker LPS interactions in line with the ellipsometry findings. Nevertheless, the N-terminal part of KYE28 retained helix formation after PEGylation, irrespective of the conjugation site. For THP1-Xblue-CD14 reporter cells, KYE28 displayed potent suppression of LPS activation at simultaneously low cell toxicity. Interestingly, the PEGylated KYE28 variants displayed similar or improved suppression of LPS-induced cell activation, implying the underlying key role of the largely retained helical structure close to the N-terminus, irrespective of PEGylation site. Taken together, the results show that PEGylation of HDPs can be done insensitively to the conjugation site without losing anti-inflammatory effects, even for peptides inducing such effects through one of its termini.
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Affiliation(s)
- Humaira Ilyas
- Department of Biophysics, Bose Institute, P-1/12 CIT Scheme VII (M), Kolkata 700054, India
| | - Mariena J A van der Plas
- Department of Pharmacy, University of Copenhagen, DK-2100 Copenhagen, Denmark.,Division of Dermatology and Venereology, Department of Clinical Sciences, Lund University, SE-221 84 Lund, Sweden
| | - Monica Agnoletti
- Department of Pharmacy, University of Copenhagen, DK-2100 Copenhagen, Denmark
| | - Sourav Kumar
- Department of Biophysics, Bose Institute, P-1/12 CIT Scheme VII (M), Kolkata 700054, India
| | - Atin Kumar Mandal
- Division of Molecular Medicine, Bose Institute, P-1/12 CIT Scheme VII (M), Kolkata 700054, India
| | - Hanudatta S Atreya
- NMR Research Center, Indian Institute of Science, Bangalore 560012, India
| | - Anirban Bhunia
- Department of Biophysics, Bose Institute, P-1/12 CIT Scheme VII (M), Kolkata 700054, India
| | - Martin Malmsten
- Department of Pharmacy, University of Copenhagen, DK-2100 Copenhagen, Denmark.,Department of Physical Chemistry 1, University of Lund, SE-22100 Lund, Sweden
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23
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Häffner SM, Parra-Ortiz E, Browning KL, Jørgensen E, Skoda MWA, Montis C, Li X, Berti D, Zhao D, Malmsten M. Membrane Interactions of Virus-like Mesoporous Silica Nanoparticles. ACS Nano 2021; 15:6787-6800. [PMID: 33724786 DOI: 10.1021/acsnano.0c10378] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
In the present study, we investigated lipid membrane interactions of silica nanoparticles as carriers for the antimicrobial peptide LL-37 (LLGDFFRKSKEKIGKEFKRIVQRIKDFLRNLVPRTES). In doing so, smooth mesoporous nanoparticles were compared to virus-like mesoporous nanoparticles, characterized by a "spiky" external surface, as well as to nonporous silica nanoparticles. For this, we employed a combination of neutron reflectometry, ellipsometry, dynamic light scattering, and ζ-potential measurements for studies of bacteria-mimicking bilayers formed by palmitoyloleoylphosphatidylcholine/palmitoyloleoylphosphatidylglycerol. The results show that nanoparticle topography strongly influences membrane binding and destabilization. We found that virus-like particles are able to destabilize such lipid membranes, whereas the corresponding smooth silica nanoparticles are not. This effect of particle spikes becomes further accentuated after loading of such particles with LL-37. Thus, peptide-loaded virus-like nanoparticles displayed more pronounced membrane disruption than either peptide-loaded smooth nanoparticles or free LL-37. The structural basis of this was clarified by neutron reflectometry, demonstrating that the virus-like nanoparticles induce trans-membrane defects and promote incorporation of LL-37 throughout both bilayer leaflets. The relevance of such effects of particle spikes for bacterial membrane rupture was further demonstrated by confocal microscopy and live/dead assays on Escherichia coli bacteria. Taken together, these findings demonstrate that topography influences the interaction of nanoparticles with bacteria-mimicking lipid bilayers, both in the absence and presence of antimicrobial peptides, as well as with bacteria. The results also identify virus-like mesoporous nanoparticles as being of interest in the design of nanoparticles as delivery systems for antimicrobial peptides.
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Affiliation(s)
| | - Elisa Parra-Ortiz
- Department of Pharmacy, University of Copenhagen, DK-2100 Copenhagen, Denmark
| | - Kathryn L Browning
- Department of Pharmacy, University of Copenhagen, DK-2100 Copenhagen, Denmark
| | - Elin Jørgensen
- Costerton Biofilm Center, Department of Immunology and Microbiology, University of Copenhagen, DK-2200 Copenhagen, Denmark
| | - Maximilian W A Skoda
- ISIS Pulsed Neutron and Muon Source, Rutherford Appleton Laboratory, Harwell, Oxfordshire OX11 0QX, United Kingdom
| | - Costanza Montis
- CSGI and Department of Chemistry "Ugo Schiff″, University of Florence, IT-50019 Sesto Fiorentino, Italy
| | - Xiaomin Li
- Department of Chemistry, Collaborative Innovation Center of Chemistry for Energy Materials, State Key Laboratory of Molecular Engineering of Polymers, Fudan University, Shanghai 200433, People's Republic of China
| | - Debora Berti
- CSGI and Department of Chemistry "Ugo Schiff″, University of Florence, IT-50019 Sesto Fiorentino, Italy
| | - Dongyuan Zhao
- Department of Chemistry, Collaborative Innovation Center of Chemistry for Energy Materials, State Key Laboratory of Molecular Engineering of Polymers, Fudan University, Shanghai 200433, People's Republic of China
| | - Martin Malmsten
- Department of Pharmacy, University of Copenhagen, DK-2100 Copenhagen, Denmark
- Department of Physical Chemistry 1, University of Lund, SE-22100 Lund, Sweden
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Malekkhaiat Häffner S, Parra-Ortiz E, Skoda MWA, Saerbeck T, Browning KL, Malmsten M. Composition effects on photooxidative membrane destabilization by TiO 2 nanoparticles. J Colloid Interface Sci 2021; 584:19-33. [PMID: 33039680 DOI: 10.1016/j.jcis.2020.09.046] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2020] [Revised: 09/11/2020] [Accepted: 09/12/2020] [Indexed: 11/30/2022]
Abstract
Membrane interactions and photooxidative membrane destabilization of titanium dioxide (TiO2) nanoparticles were investigated, focusing on the effects of membrane composition, notably phospholipid headgroup charge and presence of cholesterol. For this, we employed a battery of state-of-the-art methods for studies of bilayers formed by zwitterionic palmitoyloleoylphosphatidylcholine (POPC) containing also polyunsaturated palmitoylarachidonoylphosphocholine (PAPC), as well as its mixtures with anionic palmitoyloleoylphosphatidylglycerol (POPG) and cholesterol. It was found that the TiO2 nanoparticles display close to zero charge at pH 7.4, resulting in aggregation. At pH 3.4, in contrast, the 6 nm TiO2 nanoparticles are well dispersed due to a strongly positive ζ-potential. Mirroring this pH dependence, TiO2 nanoparticles were observed to bind to negatively charged lipid bilayers at pH 3.4, but much less so at pH 7.4. While nanoparticle binding has some destabilizing effect alone, illumination with ultraviolet (UV) light accentuates membrane destabilization, a result of oxidative stress caused by generated reactive oxygen species (ROS). Neutron reflectivity (NR), quartz crystal microbalance (QCM), and small-angle X-ray scattering (SAXS) results all demonstrate that membrane composition strongly influences membrane interactions and photooxidative destabilization of lipid bilayers. In particular, the presence of anionic POPG makes the bilayers more sensitive to oxidative destabilization, whereas a stabilizing effect was observed in the presence of cholesterol. Also, structural aspects of peroxidation were found to depend strongly on membrane composition, notably the presence of anionic phospholipids. The results show that membrane interactions and UV-induced ROS generation act in concert and need to be considered together to understand effects of lipid membrane composition on UV-triggered oxidative destabilization by TiO2 nanoparticles, e.g., in the context of oxidative damage of bacteria and cells.
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Affiliation(s)
| | - E Parra-Ortiz
- Department of Pharmacy, University of Copenhagen, DK-2100 Copenhagen, Denmark
| | - M W A Skoda
- ISIS Pulsed Neutron and Muon Source, Rutherford Appleton Laboratory, Harwell, Oxfordshire OX11 OQX, UK
| | - T Saerbeck
- Institut Laue-Langevin, CS 20156, 38042 Grenoble Cedex 9, France
| | - K L Browning
- Department of Pharmacy, University of Copenhagen, DK-2100 Copenhagen, Denmark
| | - M Malmsten
- Department of Pharmacy, University of Copenhagen, DK-2100 Copenhagen, Denmark; Department of Physical Chemistry 1, University of Lund, SE-22100 Lund, Sweden
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Parra-Ortiz E, Malekkhaiat Häffner S, Saerbeck T, Skoda MWA, Browning KL, Malmsten M. Oxidation of Polyunsaturated Lipid Membranes by Photocatalytic Titanium Dioxide Nanoparticles: Role of pH and Salinity. ACS Appl Mater Interfaces 2020; 12:32446-32460. [PMID: 32589394 DOI: 10.1021/acsami.0c08642] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
In the present study, UV-induced membrane destabilization by TiO2 (anatase) nanoparticles was investigated by neutron reflectometry (NR), small-angle X-ray scattering (SAXS), quartz crystal microbalance with dissipation (QCM-D), dynamic light scattering (DLS), and ζ-potential measurements for phospholipid bilayers formed by zwitterionic palmitoyloleoylphosphatidylcholine (POPC) containing biologically relevant polyunsaturations. TiO2 nanoparticles displayed pH-dependent binding to such bilayers. Nanoparticle binding alone, however, has virtually no destabilizing effects on the lipid bilayers. In contrast, UV illumination in the presence of TiO2 nanoparticles activates membrane destabilization as a result of lipid oxidation caused by the generation of reactive oxygen species (ROS), primarily •OH radicals. Despite the short diffusion length characterizing these, the direct bilayer attachment of TiO2 nanoparticles was demonstrated to not be a sufficient criterion for an efficient UV-induced oxidation of bilayer lipids, the latter also depending on ROS generation in bulk solution. From SAXS and NR, minor structural changes were seen when TiO2 was added in the absence of UV exposure, or on UV exposure in the absence of TiO2 nanoparticles. In contrast, UV exposure in the presence of TiO2 nanoparticles caused large-scale structural transformations, especially at high ionic strength, including gradual bilayer thinning, lateral phase separation, increases in hydration, lipid removal, and potential solubilization into aggregates. Taken together, the results demonstrate that nanoparticle-membrane interactions ROS generation at different solution conditions act in concert to induce lipid membrane destabilization on UV exposure and that both of these need to be considered for understanding the performance of UV-triggered TiO2 nanoparticles in nanomedicine.
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Affiliation(s)
- Elisa Parra-Ortiz
- Department of Pharmacy, University of Copenhagen, Copenhagen DK-2100, Denmark
| | | | - Thomas Saerbeck
- Institut Laue-Langevin, CS 20156, Grenoble Cedex 9 38042, France
| | - Maximilian W A Skoda
- ISIS Pulsed Neutron and Muon Source, Rutherford Appleton Laboratory, Harwell, Oxfordshire OX11 OQX, U.K
| | - Kathryn L Browning
- Department of Pharmacy, University of Copenhagen, Copenhagen DK-2100, Denmark
| | - Martin Malmsten
- Department of Pharmacy, University of Copenhagen, Copenhagen DK-2100, Denmark
- Department of Physical Chemistry 1, Lund University, Lund SE-221 00, Sweden
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Akhmetova A, Lanno GM, Kogermann K, Malmsten M, Rades T, Heinz A. Highly Elastic and Water Stable Zein Microfibers as a Potential Drug Delivery System for Wound Healing. Pharmaceutics 2020; 12:E458. [PMID: 32443445 PMCID: PMC7284525 DOI: 10.3390/pharmaceutics12050458] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2020] [Revised: 05/12/2020] [Accepted: 05/15/2020] [Indexed: 12/15/2022] Open
Abstract
The development of biomaterials for wound healing applications requires providing a number of properties, such as antimicrobial action, facilitation of cell proliferation, biocompatibility and biodegradability. The aim of the present study was to investigate morphological and mechanical properties of zein-based microfibers, ultimately aimed at creating an environment suitable for wound healing. This was achieved through co-axial electrospinning of core-shell microfibers, with zein protein in the core and polyethylene oxide (PEO) in the shell. Small amounts of PEO or stearic acid were additionally incorporated into the fiber core to modify the morphology and mechanical properties of zein fibers. The presence of PEO in the core was found to be essential for the formation of tubular fibers, whereas PEO in the shell enhanced the stability of the microfibers in water and ensured high elasticity of the microfiber mats. Tetracycline hydrochloride was present in an amorphous form within the fibers, and displayed a burst release as a result of pore-formation in the fibers. The developed systems exhibited antimicrobial activity against Staphylococcus aureus and Escherichia coli, and showed no cytotoxic effect on fibroblasts. Biocompatibility, antimicrobial activity and favorable morphological and mechanical properties make the developed zein-based microfibers a potential biomaterial for wound healing purposes.
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Affiliation(s)
- Alma Akhmetova
- LEO Foundation Center for Cutaneous Drug Delivery, Department of Pharmacy, University of Copenhagen, 2100 Copenhagen, Denmark; (A.A.); (M.M.); (T.R.)
| | | | - Karin Kogermann
- Institute of Pharmacy, University of Tartu, 50411 Tartu, Estonia;
| | - Martin Malmsten
- LEO Foundation Center for Cutaneous Drug Delivery, Department of Pharmacy, University of Copenhagen, 2100 Copenhagen, Denmark; (A.A.); (M.M.); (T.R.)
- Department of Physical Chemistry, Lund University, 221 00 Lund, Sweden
| | - Thomas Rades
- LEO Foundation Center for Cutaneous Drug Delivery, Department of Pharmacy, University of Copenhagen, 2100 Copenhagen, Denmark; (A.A.); (M.M.); (T.R.)
| | - Andrea Heinz
- LEO Foundation Center for Cutaneous Drug Delivery, Department of Pharmacy, University of Copenhagen, 2100 Copenhagen, Denmark; (A.A.); (M.M.); (T.R.)
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Rigo S, Hürlimann D, Marot L, Malmsten M, Meier W, Palivan CG. Decorating Nanostructured Surfaces with Antimicrobial Peptides to Efficiently Fight Bacteria. ACS Appl Bio Mater 2020; 3:1533-1543. [DOI: 10.1021/acsabm.9b01154] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Serena Rigo
- Department of Chemistry, University of Basel, Mattenstrasse 24a, BPR 1096, CH-4002 Basel, Switzerland
| | - Dimitri Hürlimann
- Department of Chemistry, University of Basel, Mattenstrasse 24a, BPR 1096, CH-4002 Basel, Switzerland
| | - Laurent Marot
- Department of Physics, University of Basel, Klingelbergstrasse 82, CH-4056 Basel, Switzerland
| | - Martin Malmsten
- Department of Pharmacy, University of Copenhagen, DK-2100 Copenhagen, Denmark
- Department of Physical Chemistry 1, Lund University, SE-221 00 Lund, Sweden
| | - Wolfgang Meier
- Department of Chemistry, University of Basel, Mattenstrasse 24a, BPR 1096, CH-4002 Basel, Switzerland
| | - Cornelia G. Palivan
- Department of Chemistry, University of Basel, Mattenstrasse 24a, BPR 1096, CH-4002 Basel, Switzerland
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Borro BC, Nordström R, Malmsten M. Microgels and hydrogels as delivery systems for antimicrobial peptides. Colloids Surf B Biointerfaces 2020; 187:110835. [PMID: 32033885 DOI: 10.1016/j.colsurfb.2020.110835] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2019] [Revised: 01/21/2020] [Accepted: 01/29/2020] [Indexed: 02/07/2023]
Abstract
Due to rapid development of bacterial resistance against antibiotics, an emerging health crisis is underway, where 'simple' infections may no longer be treatable. Antimicrobial peptides (AMPs) constitute a class of substances attracting interest in this context. So far, research on AMPs has primarily focused on the identification of potent and selective peptides, as well as on the action mode of such peptides. More recently, there has been an increasing awareness that the delivery of AMPs is challenging due to their size, net positive charge, amphiphilicity, and proteolytic susceptibility. Hence, successful development of AMP therapeutics will likely require also careful design of efficient AMP delivery systems. In the present brief review, we discuss microgels, as well as related polyelectrolyte complexes and macroscopic hydrogels, as delivery systems for AMPs. In doing so, key factors for peptide loading and release are outlined and exemplified, together with consequences of this for functional performance relating to antimicrobial effects and cell toxicity.
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Affiliation(s)
- Bruno C Borro
- Department of Pharmacy, University of Copenhagen, DK-2100 Copenhagen, Denmark
| | - Randi Nordström
- Department of Pharmacy, Uppsala University, S-751 23 Uppsala, Sweden
| | - Martin Malmsten
- Department of Pharmacy, University of Copenhagen, DK-2100 Copenhagen, Denmark; Physical Chemistry 1, University of Lund, S-221 00 Lund, Sweden.
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Borro BC, Toussaint MS, Bucciarelli S, Malmsten M. Effects of charge contrast and composition on microgel formation and interactions with bacteria-mimicking liposomes. Biochim Biophys Acta Gen Subj 2019; 1865:129485. [PMID: 31734459 DOI: 10.1016/j.bbagen.2019.129485] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2019] [Revised: 11/02/2019] [Accepted: 11/08/2019] [Indexed: 11/15/2022]
Abstract
Microgels offer opportunities for improved delivery of antimicrobial peptides (AMP). To contribute to a foundation for rational design of such systems, we here study the effects of electrostatics on the generation of peptide-carrying microgels. For this, alginate microgels loaded with polymyxin B and cross-linked by Ca2+, were formed by electrostatic complexation using a hydrodynamic focusing three-dimensional (3D)-printed micromixer, varying pH and component concentrations. The structure of the resulting composite nanoparticles was investigated by small-angle X-ray scattering, dynamic light scattering, and z-potential measurements, whereas peptide encapsulation and release was monitored spectrophotometrically. Furthermore, membrane interactions of these systems were assessed by dye leakage assays in model lipid vesicles. Our results indicate that charge contrast between polymyxin B and alginate during microgel formation affects particle size and network dimensions. In particular, while microgels prepared at maximum polymyxin B-alginate charge contrast at pH 5 and 7.4 are characterized by sharp interfaces, those formed at pH 9 are characterized by a more diffuse core, likely caused by a weaker peptide-polymer affinity, and a shell dominated by alginate that shrinks at high CaCl2 concentrations. Quantitatively, however, these effects were relatively minor, as were differences in peptide encapsulation efficiency and electrolyte-induced peptide release. This demonstrates that rather wide charge contrasts allow efficient complexation and particle formation, with polymyxin B encapsulated within the particle interior at low ionic strength, but released at high electrolyte concentration. As a consequence of this, peptide-mediated membrane destabilization were suppressed by microgel incorporation at low ionic strength, but regained after microgel disruption. After particle disruption at high ionic strength, however, some polymyxin B was found to remain bound to alginate chains from the disrupted composite microgel particles, resulting in partial loss in membrane interactions, compared to the free peptide.
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Affiliation(s)
- Bruno C Borro
- Department of Pharmacy, University of Copenhagen, Copenhagen, Denmark.
| | - Marie S Toussaint
- Department of Biological Engineering, Polytech Clermont-Ferrand, Aubiére, France
| | - Saskia Bucciarelli
- Department of Drug Design and Pharmacology, University of Copenhagen, Copenhagen, Denmark
| | - Martin Malmsten
- Department of Pharmacy, University of Copenhagen, Copenhagen, Denmark; Physical Chemistry 1, University of Lund, S-221 00 Lund, Sweden
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Nordström R, Andrén OC, Singh S, Malkoch M, Davoudi M, Schmidtchen A, Malmsten M. Degradable dendritic nanogels as carriers for antimicrobial peptides. J Colloid Interface Sci 2019; 554:592-602. [DOI: 10.1016/j.jcis.2019.07.028] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2019] [Revised: 07/12/2019] [Accepted: 07/12/2019] [Indexed: 12/18/2022]
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Ilyas H, Kim J, Lee D, Malmsten M, Bhunia A. Structural insights into the combinatorial effects of antimicrobial peptides reveal a role of aromatic-aromatic interactions in antibacterial synergism. J Biol Chem 2019; 294:14615-14633. [PMID: 31383740 DOI: 10.1074/jbc.ra119.009955] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2019] [Revised: 08/02/2019] [Indexed: 01/10/2023] Open
Abstract
The recent development of plants that overexpress antimicrobial peptides (AMPs) provides opportunities for controlling plant diseases. Because plants employ a broad-spectrum antimicrobial defense, including those based on AMPs, transgenic modification for AMP overexpression represents a potential way to utilize a defense system already present in plants. Herein, using an array of techniques and approaches, we report on VG16KRKP and KYE28, two antimicrobial peptides, which in combination exhibit synergistic antimicrobial effects against plant pathogens and are resistant against plant proteases. Investigating the structural origin of these synergistic antimicrobial effects with NMR spectroscopy of the complex formed between these two peptides and their mutated analogs, we demonstrate the formation of an unusual peptide complex, characterized by the formation of a bulky hydrophobic hub, stabilized by aromatic zippers. Using three-dimensional structure analyses of the complex in bacterial outer and inner membrane components and when bound to lipopolysaccharide (LPS) or bacterial membrane mimics, we found that this structure is key for elevating antimicrobial potency of the peptide combination. We conclude that the synergistic antimicrobial effects of VG16KRKP and KYE28 arise from the formation of a well-defined amphiphilic dimer in the presence of LPS and also in the cytoplasmic bacterial membrane environment. Together, these findings highlight a new application of solution NMR spectroscopy to solve complex structures to study peptide-peptide interactions, and they underscore the importance of structural insights for elucidating the antimicrobial effects of AMP mixtures.
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Affiliation(s)
- Humaira Ilyas
- Department of Biophysics, Bose Institute, P-1/12 CIT Scheme VII (M), Kolkata 700054, India
| | - JaeWoong Kim
- Department of Fine Chemistry, Seoul National University of Science and Technology, Seoul 139743, Korea
| | - DongKuk Lee
- Department of Fine Chemistry, Seoul National University of Science and Technology, Seoul 139743, Korea
| | - Martin Malmsten
- Department of Pharmacy, Uppsala University, SE-75123 Uppsala, Sweden .,Department of Pharmacy, University of Copenhagen, DK 2100, Copenhagen, Denmark
| | - Anirban Bhunia
- Department of Biophysics, Bose Institute, P-1/12 CIT Scheme VII (M), Kolkata 700054, India
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Borro BC, Malmsten M. Complexation between antimicrobial peptides and polyelectrolytes. Adv Colloid Interface Sci 2019; 270:251-260. [PMID: 31301601 DOI: 10.1016/j.cis.2019.07.001] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2019] [Revised: 07/02/2019] [Accepted: 07/02/2019] [Indexed: 12/18/2022]
Abstract
As a result of increasing bacterial resistance against antibiotics, we are facing an emerging health crisis, in which 'simple' infections may no longer be treatable. One class of molecules attracting interest in this context is antimicrobial peptides (AMPs), and considerable research efforts have been directed to identifying selective and potent AMPs. In addition, since in vivo delivery of AMPs is challenging, there is an emerging awareness that successful development of AMP therapeutics can be facilitated by careful design of AMPs delivery systems. In the present overview, we discuss polyelectrolyte complexation as a strategy to deliver AMPs. In doing so, key factors for AMP-polyelectrolyte complexation are illustrated for AMP-polyelectrolyte nanoparticle formation, as well as for AMP incorporation in polyelectrolyte microgels and multilayer structures, and consequences of these for functional performance exemplified.
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Zhang Y, Andrén OCJ, Nordström R, Fan Y, Malmsten M, Mongkhontreerat S, Malkoch M. Off-Stoichiometric Thiol-Ene Chemistry to Dendritic Nanogel Therapeutics. Adv Funct Mater 2019; 29:1806693. [PMID: 35865651 PMCID: PMC9286377 DOI: 10.1002/adfm.201806693] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/21/2018] [Revised: 01/28/2019] [Indexed: 05/03/2023]
Abstract
A novel platform of dendritic nanogels is herein presented, capitalizing on the self-assembly of allyl-functional polyesters based on dendritic-linear-dendritic amphiphiles followed by simple cross-linking with complementary monomeric thiols via UV initiated off-stoichiometric thiol-ene chemistry. The facile approach enabled multigram creation of allyl reactive nanogel precursors, in the size range of 190-295 nm, being readily available for further modifications to display a number of core functionalities while maintaining the size distribution and characteristics of the master batch. The nanogels are evaluated as carriers of a spread of chemotherapeutics by customizing the core to accommodate each individual cargo. The resulting nanogels are biocompatible, displaying diffusion controlled release of cargo, maintained therapeutic efficacy, and decreased cargo toxic side effects. Finally, the nanogels are found to successfully deliver pharmaceuticals into a 3D pancreatic spheroids tumor model.
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Affiliation(s)
- Yuning Zhang
- KTH Royal Institute of TechnologyDepartment of Fibre and Polymer TechnologySE‐100 44StockholmSweden
| | - Oliver C. J. Andrén
- KTH Royal Institute of TechnologyDepartment of Fibre and Polymer TechnologySE‐100 44StockholmSweden
| | - Randi Nordström
- Department of PharmacyUppsala UniversitySE‐751 23UppsalaSweden
| | - Yanmiao Fan
- KTH Royal Institute of TechnologyDepartment of Fibre and Polymer TechnologySE‐100 44StockholmSweden
| | - Martin Malmsten
- Department of PharmacyUppsala UniversitySE‐751 23UppsalaSweden
| | | | - Michael Malkoch
- KTH Royal Institute of TechnologyDepartment of Fibre and Polymer TechnologySE‐100 44StockholmSweden
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Malekkhaiat Häffner S, Nyström L, Browning KL, Mörck Nielsen H, Strömstedt AA, van der Plas MJA, Schmidtchen A, Malmsten M. Interaction of Laponite with Membrane Components-Consequences for Bacterial Aggregation and Infection Confinement. ACS Appl Mater Interfaces 2019; 11:15389-15400. [PMID: 30951282 DOI: 10.1021/acsami.9b03527] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
The antimicrobial effects of Laponite nanoparticles with or without loading of the antimicrobial peptide LL-37 was investigated along with their membrane interactions. The study combines data from ellipsometry, circular dichroism, fluorescence spectroscopy, particle size/ζ potential measurements, and confocal microscopy. As a result of the net negative charge of Laponite, loading of net positively charged LL-37 increases with increasing pH. The peptide was found to bind primarily to the outer surface of the Laponite nanoparticles in a predominantly helical conformation, leading to charge reversal. Despite their net positive charge, peptide-loaded Laponite nanoparticles did not kill Gram-negative Escherichia coli bacteria or disrupt anionic model liposomes. They did however cause bacteria flocculation, originating from the interaction of Laponite and bacterial lipopolysaccharide (LPS). Free LL-37, in contrast, is potently antimicrobial through membrane disruption but does not induce bacterial aggregation in the concentration range investigated. Through LL-37 loading of Laponite nanoparticles, the combined effects of bacterial flocculation and membrane lysis are observed. However, bacteria aggregation seems to be limited to Gram-negative bacteria as Laponite did not cause flocculation of Gram-positive Bacillus subtilis bacteria nor did it bind to lipoteichoic acid from bacterial envelopes. Taken together, the present investigation reports several novel phenomena by demonstrating that nanoparticle charge does not invariably control membrane destabilization and by identifying the ability of anionic Laponite nanoparticles to effectively flocculate Gram-negative bacteria through LPS binding. As demonstrated in cell experiments, such aggregation results in diminished LPS-induced cell activation, thus outlining a promising approach for confinement of infection and inflammation caused by such pathogens.
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Affiliation(s)
| | - Lina Nyström
- Department of Pharmacy , Uppsala University , SE-75123 Uppsala , Sweden
| | | | | | | | - Mariena J A van der Plas
- Division of Dermatology and Venereology, Department of Clinical Sciences , Lund University , SE-22184 Lund , Sweden
| | - Artur Schmidtchen
- Division of Dermatology and Venereology, Department of Clinical Sciences , Lund University , SE-22184 Lund , Sweden
| | - Martin Malmsten
- Department of Pharmacy , Uppsala University , SE-75123 Uppsala , Sweden
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Borro BC, Bohr A, Bucciarelli S, Boetker JP, Foged C, Rantanen J, Malmsten M. Microfluidics-based self-assembly of peptide-loaded microgels: Effect of three dimensional (3D) printed micromixer design. J Colloid Interface Sci 2019; 538:559-568. [DOI: 10.1016/j.jcis.2018.12.010] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2018] [Revised: 11/27/2018] [Accepted: 12/03/2018] [Indexed: 12/12/2022]
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Affiliation(s)
- Pedro Reis
- UCB Farchim; Chemin de Croix Blanche 10, Z.I. de Planchy; CH-1630, Bulle Switzerland
| | - Martin Malmsten
- Department of Pharmacy; University of Copenhagen; DK-2100, Copenhagen Denmark
- Department of Pharmacy; Uppsala University; SE-75123, Uppsala Sweden
| | - Magnus Nydén
- AkzoNobel Specialty Chemicals; SE-445 85 Stenungsund Sweden
| | - Britta Folmer
- Nestlé Nespresso, Avenue de Rhodanie; CH-1007, Lausanne Switzerland
| | - Krister Holmberg
- Chalmers University of Technology; Department of Chemistry and Chemical Engineering; SE-41296, Gothenburg Sweden
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37
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Mohid SA, Ghorai A, Ilyas H, Mroue KH, Narayanan G, Sarkar A, Ray SK, Biswas K, Bera AK, Malmsten M, Midya A, Bhunia A. Application of tungsten disulfide quantum dot-conjugated antimicrobial peptides in bio-imaging and antimicrobial therapy. Colloids Surf B Biointerfaces 2019; 176:360-370. [PMID: 30658284 DOI: 10.1016/j.colsurfb.2019.01.020] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2018] [Revised: 12/24/2018] [Accepted: 01/07/2019] [Indexed: 01/20/2023]
Abstract
Two-dimensional (2D) tungsten disulfide (WS2) quantum dots offer numerous promising applications in materials and optoelectronic sciences. Additionally, the catalytic and photoluminescence properties of ultra-small WS2 nanoparticles are of potential interest in biomedical sciences. Addressing the use of WS2 in the context of infection, the present study describes the conjugation of two potent antimicrobial peptides with WS2 quantum dots, as well as the application of the resulting conjugates in antimicrobial therapy and bioimaging. In doing so, we determined the three-dimensional solution structure of the quantum dot-conjugated antimicrobial peptide by a series of high-resolution nuclear magnetic resonance (NMR) techniques, correlating this to the disruption of both model lipid and bacterial membranes, and to several key biological performances, including antimicrobial and anti-biofilm effects, as well as cell toxicity. The results demonstrate that particle conjugation enhances the antimicrobial and anti-biofilm potency of these peptides, effects inferred to be due to multi-dendate interactions for the conjugated peptides. As such, our study provides information on the mode-of-action of such conjugates, laying the foundation for their potential use in treatment and monitoring of infections.
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Affiliation(s)
- Sk Abdul Mohid
- Department of Biophysics, Bose Institute, Kolkata, 700054, India
| | - Arup Ghorai
- School of Nanoscience and Technology, IIT Kharagpur, Kharagpur, 721302, India
| | - Humaira Ilyas
- Department of Biophysics, Bose Institute, Kolkata, 700054, India
| | - Kamal H Mroue
- Department of Chemistry, University of Waterloo, Waterloo, Ontario, N2L3G1, Canada
| | | | - Abhisek Sarkar
- Division of Molecular Medicine, Bose Institute, Kolkata, 700054, India
| | - Samit K Ray
- Department of Physics, IIT Kharagpur, Kharagpur, 721302, India
| | - Kaushik Biswas
- Division of Molecular Medicine, Bose Institute, Kolkata, 700054, India
| | - Amal Kanti Bera
- Department of Biotechnology, IIT Madras, Chennai, 600036, India
| | - Martin Malmsten
- Department of Pharmacy, Uppsala University, SE-75232, Uppsala, Sweden; Department of Pharmacy, University of Copenhagen, DK-2100, Copenhagen, Denmark.
| | - Anupam Midya
- School of Nanoscience and Technology, IIT Kharagpur, Kharagpur, 721302, India.
| | - Anirban Bhunia
- Department of Biophysics, Bose Institute, Kolkata, 700054, India.
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Nyström L, Al-Rammahi N, Malekkhaiat Häffner S, Strömstedt AA, Browning KL, Malmsten M. Avidin-Biotin Cross-Linked Microgel Multilayers as Carriers for Antimicrobial Peptides. Biomacromolecules 2018; 19:4691-4702. [PMID: 30427659 DOI: 10.1021/acs.biomac.8b01484] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Herein, we report on the formation of cross-linked antimicrobial peptide-loaded microgel multilayers. Poly(ethyl acrylate- co-methacrylic acid) microgels were synthesized and functionalized with biotin to enable the formation of microgel multilayers cross-linked with avidin. Microgel functionalization and avidin cross-linking were verified with infrared spectroscopy, dynamic light scattering, and z-potential measurements, while multilayer formation (up to four layers) was studied with null ellipsometry and quartz crystal microbalance with dissipation (QCM-D). Incorporation of the antimicrobial peptide KYE28 (KYEITTIHNLFRKLTHRLFRRNFGYTLR) into the microgel multilayers was achieved either in one shot after multilayer formation or through addition after each microgel layer deposition. The latter was found to strongly promote peptide incorporation. Further, antimicrobial properties of the peptide-loaded microgel multilayers against Escherichia coli were investigated and compared to those of a peptide-loaded microgel monolayer. Results showed a more pronounced suppression in bacterial viability in suspension for the microgel multilayers. Correspondingly, LIVE/DEAD staining showed promoted disruption of adhered bacteria for the KYE28-loaded multilayers. Taken together, cross-linked microgel multilayers thus show promise as high load surface coatings for antimicrobial peptides.
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Affiliation(s)
| | | | | | | | - Kathryn L Browning
- Department of Pharmacy , University of Copenhagen , DK-2100 Copenhagen , Denmark
| | - Martin Malmsten
- Department of Pharmacy , University of Copenhagen , DK-2100 Copenhagen , Denmark
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39
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Malmsten M, Zauscher S. Editorial overview: Colloids and surfaces in biology. Curr Opin Colloid Interface Sci 2018. [DOI: 10.1016/j.cocis.2018.11.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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40
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42
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Siegel G, Berkholz J, Klüßendorf D, Knosalla C, Zakrzewicz A, Ermilov E, Malmsten M, Lindman B. Atherogenesis and plaque rupture, surface/interface-related phenomena. Colloids Surf A Physicochem Eng Asp 2018. [DOI: 10.1016/j.colsurfa.2018.05.080] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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43
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Siegel G, Hammersen S, Becker A, Georgescu D, Lubitz I, Ermilov E, Malmsten M, Saunders R, Lindman B. Abstract 363: The Brain - Pancreas Axis: An Alzheimer Nanoplaque Study. Circ Res 2018. [DOI: 10.1161/res.123.suppl_1.363] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Background:
The central-nervous regulation of blood glucose occurs purely neuroendocrine via the hypothalamus-hypophysis-adrenal cortex system. In this control loop, insulin is the adjustable and glucose the controlled variable.
Methods:
Ellipsometry, photometric methods and ELISAs were applied. Intracellular membrane potential and tension were recorded from human intracerebral arteries of consciousness areas.
Results and discussion:
Despite multiply feedback coupled and safeguarded control loops for maintenance of a constant blood glucose level, 4.7% of the world population suffered from diabetes mellitus (T2DM) in 1980 and already 8.5% in 2014. In parallel, the risk for cardiovascular (heart attack, stroke) and Alzheimer diseases (AD) has risen by a factor of four to eight. In ellipsometry measurements with polyanionic heparan sulfate proteoglycan (HS-PG), VLDLapoE4/E4 and IDLapoE4/E4, β-amyloid (1-42) and Ca
2+
-ions, we could show that non-enzymatic glycation of these substances leads to an Alzheimer nanoplaque formation increased by 20-30%. Since the viscoelastic polyelectrolyte HS-PG serves not only as lipoprotein receptor but also as blood flow sensor, we recorded with the same glycation a flow-dependent dilatation reduced by up to 80% in human brain arteries
ex vivo
(from neurosurgery) which express HS-PG in endothelial and smooth muscle cell membranes. The resulting O
2
-deficiency with certainty entails neuronal cell death. Postprandial, blood glucose levels can appear as were experimentally applied here.
Conclusion:
Also short-term distinctly increased blood glucose concentrations in apoE4 carriers can explain neuronal cell death like in AD.
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Affiliation(s)
| | | | | | - Dan Georgescu
- Clinic Königsfelden for Geronto- and Neuropsychiatry, Brugg, Switzerland
| | | | | | | | - Ramsey Saunders
- St. George’s Univ Sch of Arts and Sciences, True Blue, Grenada
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Nyström L, Strömstedt AA, Schmidtchen A, Malmsten M. Peptide-Loaded Microgels as Antimicrobial and Anti-Inflammatory Surface Coatings. Biomacromolecules 2018; 19:3456-3466. [DOI: 10.1021/acs.biomac.8b00776] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
| | | | - Artur Schmidtchen
- Division of Dermatology and Venereology, Department of Clinical Sciences, Lund University, SE-22184 Lund, Sweden
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Colombo S, Beck-Broichsitter M, Bøtker JP, Malmsten M, Rantanen J, Bohr A. Transforming nanomedicine manufacturing toward Quality by Design and microfluidics. Adv Drug Deliv Rev 2018; 128:115-131. [PMID: 29626549 DOI: 10.1016/j.addr.2018.04.004] [Citation(s) in RCA: 58] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2018] [Revised: 03/20/2018] [Accepted: 04/02/2018] [Indexed: 01/31/2023]
Abstract
Nanopharmaceuticals aim at translating the unique features of nano-scale materials into therapeutic products and consequently their development relies critically on the progression in manufacturing technology to allow scalable processes complying with process economy and quality assurance. The relatively high failure rate in translational nanopharmaceutical research and development, with respect to new products on the market, is at least partly due to immature bottom-up manufacturing development and resulting sub-optimal control of quality attributes in nanopharmaceuticals. Recently, quality-oriented manufacturing of pharmaceuticals has undergone an unprecedented change toward process and product development interaction. In this context, Quality by Design (QbD) aims to integrate product and process development resulting in an increased number of product applications to regulatory agencies and stronger proprietary defense strategies of process-based products. Although QbD can be applied to essentially any production approach, microfluidic production offers particular opportunities for QbD-based manufacturing of nanopharmaceuticals. Microfluidics provides unique design flexibility, process control and parameter predictability, and also offers ample opportunities for modular production setups, allowing process feedback for continuously operating production and process control. The present review aims at outlining emerging opportunities in the synergistic implementation of QbD strategies and microfluidic production in contemporary development and manufacturing of nanopharmaceuticals. In doing so, aspects of design and development, but also technology management, are reviewed, as is the strategic role of these tools for aligning nanopharmaceutical innovation, development, and advanced industrialization in the broader pharmaceutical field.
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Affiliation(s)
- Stefano Colombo
- University of Copenhagen, Department of Pharmacy, Copenhagen, Denmark
| | | | | | - Martin Malmsten
- University of Copenhagen, Department of Pharmacy, Copenhagen, Denmark; Uppsala University, Department of Pharmacy, Uppsala, Sweden
| | - Jukka Rantanen
- University of Copenhagen, Department of Pharmacy, Copenhagen, Denmark
| | - Adam Bohr
- University of Copenhagen, Department of Pharmacy, Copenhagen, Denmark.
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Malekkhaiat Häffner S, Nyström L, Nordström R, Xu ZP, Davoudi M, Schmidtchen A, Malmsten M. Membrane interactions and antimicrobial effects of layered double hydroxide nanoparticles. Phys Chem Chem Phys 2018; 19:23832-23842. [PMID: 28682360 DOI: 10.1039/c7cp02701j] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Membrane interactions are critical for the successful use of inorganic nanoparticles as antimicrobial agents and as carriers of, or co-actives with, antimicrobial peptides (AMPs). In order to contribute to an increased understanding of these, we here investigate effects of particle size (42-208 nm) on layered double hydroxide (LDH) interactions with both bacteria-mimicking and mammalian-mimicking lipid membranes. LDH binding to bacteria-mimicking membranes, extraction of anionic lipids, as well as resulting membrane destabilization, was found to increase with decreasing particle size, also translating into size-dependent synergistic effects with the antimicrobial peptide LL-37. Due to strong interactions with anionic lipopolysaccharide and peptidoglycan layers, direct membrane disruption of both Gram-negative and Gram-positive bacteria is suppressed. However, LDH nanoparticles cause size-dependent charge reversal and resulting flocculation of both liposomes and bacteria, which may provide a mechanism for bacterial confinement or clearance. Taken together, these findings demonstrate a set of previously unknown behaviors, including synergistic membrane destabilization and dual confinement/killing of bacteria through combined LDH/AMP exposure, of potential therapeutic interest.
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Browning KL, Lind TK, Maric S, Barker RD, Cárdenas M, Malmsten M. Effect of bilayer charge on lipoprotein lipid exchange. Colloids Surf B Biointerfaces 2018; 168:117-125. [PMID: 29422308 DOI: 10.1016/j.colsurfb.2018.01.043] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2017] [Revised: 12/22/2017] [Accepted: 01/20/2018] [Indexed: 12/17/2022]
Abstract
Lipoproteins play a key role in the onset and development of atherosclerosis, the formation of lipid plaques at blood vessel walls. The plaque formation, as well as subsequent calcification, involves not only endothelial cells but also connective tissue, and is closely related to a wide range of cardiovascular syndromes, that together constitute the number one cause of death in the Western World. High (HDL) and low (LDL) density lipoproteins are of particular interest in relation to atherosclerosis, due to their protective and harmful effects, respectively. In an effort to elucidate the molecular mechanisms underlying this, and to identify factors determining lipid deposition and exchange at lipid membranes, we here employ neutron reflection (NR) and quartz crystal microbalance with dissipation (QCM-D) to study the effect of membrane charge on lipoprotein deposition and lipid exchange. Dimyristoylphosphatidylcholine (DMPC) bilayers containing varying amounts of negatively charged dimyristoylphosphatidylserine (DMPS) were used to vary membrane charge. It was found that the amount of hydrogenous material deposited from either HDL or LDL to the bilayer depends only weakly on membrane charge density. In contrast, increasing membrane charge resulted in an increase in the amount of lipids removed from the supported lipid bilayer, an effect particularly pronounced for LDL. The latter effects are in line with previously reported observations on atherosclerotic plaque prone regions of long-term hyperlipidaemia and type 2 diabetic patients, and may also provide some molecular clues into the relation between oxidative stress and atherosclerosis.
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Affiliation(s)
- Kathryn Louise Browning
- Department of Pharmacy, Uppsala University, Uppsala, Sweden; Department of Pharmacy, University of Copenhagen, Copenhagen, Denmark.
| | - Tania Kjellerup Lind
- Department of Biomedical Sciences and Biofilms - Research Centre for Biointerfaces, Malmö University, Malmö, Sweden
| | - Selma Maric
- Department of Biomedical Sciences and Biofilms - Research Centre for Biointerfaces, Malmö University, Malmö, Sweden
| | | | - Marité Cárdenas
- Department of Biomedical Sciences and Biofilms - Research Centre for Biointerfaces, Malmö University, Malmö, Sweden.
| | - Martin Malmsten
- Department of Pharmacy, Uppsala University, Uppsala, Sweden; Department of Pharmacy, University of Copenhagen, Copenhagen, Denmark
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48
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Singh S, Datta A, Borro BC, Davoudi M, Schmidtchen A, Bhunia A, Malmsten M. Conformational Aspects of High Content Packing of Antimicrobial Peptides in Polymer Microgels. ACS Appl Mater Interfaces 2017; 9:40094-40106. [PMID: 29087182 DOI: 10.1021/acsami.7b13714] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Successful use of microgels as delivery systems of antimicrobial peptides (AMPs) requires control of factors determining peptide loading and release to/from the microgels as well as of membrane interactions of both microgel particles and released peptides. Addressing these, we here investigate effects of microgel charge density and conformationally induced peptide amphiphilicity on AMP loading and release using detailed nuclear magnetic resonance (NMR) structural studies combined with ellipsometry, isothermal titration calorimetry, circular dichroism, and light scattering. In parallel, consequences of peptide loading and release for membrane interactions and antimicrobial effects were investigated. In doing so, poly(ethyl acrylate-co-methacrylic acid) microgels were found to incorporate the cationic AMPs EFK17a (EFKRIVQRIKDFLRNLV) and its partially d-amino acid-substituted variant EFK17da (E(dF)KR(dI)VQR(dI)KD(dF)LRNLV). Peptide incorporation was found to increase with increasing with microgel charge density and peptide amphiphilicity. After microgel incorporation, which appeared to occur preferentially in the microgel core, NMR showed EFK17a to form a helix with pronounced amphiphilicity, while EFK17da displayed a folded conformation, stabilized by a hydrophobic hub consisting of aromatic/aromatic and aliphatic/aromatic interactions, resulting in much lower amphiphilicity. Under wide ranges of peptide loading, the microgels displayed net negative z-potential. Such negatively charged microgels do not bind to, nor lyse, bacteria-mimicking membranes. Instead, membrane disruption in these systems is mediated largely by peptide release, which in turn is promoted at higher ionic strength and lower peptide amphiphilicity. Analogously, antimicrobial effects against Escherichia coli were found to be dictated by peptide release. Taken together, the findings show that peptide loading, packing, and release strongly affect the performance of microgels as AMP delivery systems, effects that can be tuned by (conformationally induced) peptide amphiphilicity and by microgel charge density.
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Affiliation(s)
- Shalini Singh
- Department of Pharmacy, Uppsala University , SE-75232 Uppsala, Sweden
| | - Aritreyee Datta
- Department of Biophysics, Bose Institute , P-1/12 CIT Scheme VII (M), Kolkata 700054, India
| | - Bruno C Borro
- Department of Pharmacy, University of Copenhagen , DK-2100 Copenhagen, Denmark
| | - Mina Davoudi
- Division of Dermatology and Venereology, Department of Clinical Sciences, Lund University , SE-221 84 Lund, Sweden
| | - Artur Schmidtchen
- Division of Dermatology and Venereology, Department of Clinical Sciences, Lund University , SE-221 84 Lund, Sweden
- Lee Kong Chian School of Medicine, Nanyang Technological University , 11 Mandalay Road, Singapore 308232, Singapore
- Wound Healing Centre, Bispebjerg University Hospital , DK-2100 Copenhagen, Denmark
| | - Anirban Bhunia
- Department of Biophysics, Bose Institute , P-1/12 CIT Scheme VII (M), Kolkata 700054, India
| | - Martin Malmsten
- Department of Pharmacy, Uppsala University , SE-75232 Uppsala, Sweden
- Department of Pharmacy, University of Copenhagen , DK-2100 Copenhagen, Denmark
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Bandosz T, Berti D, Eastoe J, Hubbard A, Lopez-Quintela A, Lu M, Malmsten M, Zheng G. Editorial: Positive developments for JCIS. J Colloid Interface Sci 2017; 505:A1-A2. [DOI: 10.1016/j.jcis.2017.06.070] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Malekkhaiat Häffner S, Malmsten M. Membrane interactions and antimicrobial effects of inorganic nanoparticles. Adv Colloid Interface Sci 2017; 248:105-128. [PMID: 28807368 DOI: 10.1016/j.cis.2017.07.029] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2017] [Revised: 07/20/2017] [Accepted: 07/25/2017] [Indexed: 12/19/2022]
Abstract
Interactions between nanoparticles and biological membranes are attracting increasing attention in current nanomedicine, and play a key role both for nanotoxicology and for utilizing nanomaterials in diagnostics, drug delivery, functional biomaterials, as well as combinations of these, e.g., in theranostics. In addition, there is considerable current interest in the use of nanomaterials as antimicrobial agents, motivated by increasing resistance development against conventional antibiotics. Here, various nanomaterials offer opportunities for triggered functionalites to combat challenging infections. Although the performance in these diverse applications is governed by a complex interplay between the nanomaterial, the properties of included drugs (if any), and the biological system, nanoparticle-membrane interactions constitute a key initial step and play a key role for the subsequent biological response. In the present overview, the current understanding of inorganic nanomaterials as antimicrobial agents is outlined, with special focus on the interplay between antimicrobial effects and membrane interactions, and how membrane interactions and antimicrobial effects of such materials depend on nanoparticle properties, membrane composition, and external (e.g., light and magnetic) fields.
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Affiliation(s)
| | - Martin Malmsten
- Department of Pharmacy, University of Copenhagen, DK-2100 Copenhagen, Denmark; Department of Pharmacy, Uppsala University, P.O. Box 580, SE-751 23 Uppsala, Sweden.
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