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Proksch J, Dal Colle MCS, Heinz F, Schmidt RF, Gottwald J, Delbianco M, Keller BG, Gradzielski M, Alexiev U, Koksch B. Impact of glycan nature on structure and viscoelastic properties of glycopeptide hydrogels. J Pept Sci 2024; 30:e3599. [PMID: 38567550 DOI: 10.1002/psc.3599] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2024] [Revised: 03/06/2024] [Accepted: 03/07/2024] [Indexed: 04/04/2024]
Abstract
Mucus is a complex biological hydrogel that acts as a barrier for almost everything entering or exiting the body. It is therefore of emerging interest for biomedical and pharmaceutical applications. Besides water, the most abundant components are the large and densely glycosylated mucins, glycoproteins of up to 20 MDa and carbohydrate content of up to 80 wt%. Here, we designed and explored a library of glycosylated peptides to deconstruct the complexity of mucus. Using the well-characterized hFF03 coiled-coil system as a hydrogel-forming peptide scaffold, we systematically probed the contribution of single glycans to the secondary structure as well as the formation and viscoelastic properties of the resulting hydrogels. We show that glycan-decoration does not affect α-helix and coiled-coil formation while it alters gel stiffness. By using oscillatory macrorheology, dynamic light scattering microrheology, and fluorescence lifetime-based nanorheology, we characterized the glycopeptide materials over several length scales. Molecular simulations revealed that the glycosylated linker may extend into the solvent, but more frequently interacts with the peptide, thereby likely modifying the stability of the self-assembled fibers. This systematic study highlights the interplay between glycan structure and hydrogel properties and may guide the development of synthetic mucus mimetics.
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Affiliation(s)
- Jonas Proksch
- Institute of Chemistry and Biochemistry, Freie Universität Berlin, Berlin, Germany
| | - Marlene C S Dal Colle
- Institute of Chemistry and Biochemistry, Freie Universität Berlin, Berlin, Germany
- Department of Biomolecular Systems, Max Planck Institute of Colloids and Interfaces, Potsdam, Germany
| | - Frederick Heinz
- Institute of Chemistry and Biochemistry, Freie Universität Berlin, Berlin, Germany
| | - Robert F Schmidt
- Stranski-Laboratorium für Physikalische und Theoretische Chemie, Institut für Chemie, Technische Universität Berlin, Berlin, Germany
| | | | - Martina Delbianco
- Department of Biomolecular Systems, Max Planck Institute of Colloids and Interfaces, Potsdam, Germany
| | - Bettina G Keller
- Stranski-Laboratorium für Physikalische und Theoretische Chemie, Institut für Chemie, Technische Universität Berlin, Berlin, Germany
| | - Michael Gradzielski
- Stranski-Laboratorium für Physikalische und Theoretische Chemie, Institut für Chemie, Technische Universität Berlin, Berlin, Germany
| | - Ulrike Alexiev
- Department of Physics, Freie Universität Berlin, Berlin, Germany
| | - Beate Koksch
- Institute of Chemistry and Biochemistry, Freie Universität Berlin, Berlin, Germany
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2
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Murdoch TJ, Quienne B, Pinaud J, Caillol S, Martín-Fabiani I. Understanding associative polymer self-assembly with shrinking gate fluorescence correlation spectroscopy. NANOSCALE 2024; 16:12660-12669. [PMID: 38888295 DOI: 10.1039/d4nr00737a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/20/2024]
Abstract
The self-assembly of polymers is integral to their role in liquid formulations. In this study, we combine a dye whose lifetime is sensitive to the nanoviscosity of its local environment with shrinking gate fluorescence correlation spectroscopy (sgFCS) to study the self-assembly of a model telechelic polymer, hydrophobically modified ethoxylated urethane (HEUR). Fluorescence lifetime measurements show a monotonic increase in average lifetime with increasing HEUR concentration driven by a small fraction of dye (<1%) with long lifetimes strongly bound to HEUR. Despite this small fraction, sgFCS isolates the diffusional dynamics of the bound fraction with no a priori assumptions as to the distribution of lifetimes. Sensitivity is greatly enhanced compared to standard FCS, revealing micellar aggregates forming between 0.2 and 1 wt% followed by formation of a percolated network. This sgFCS approach, which we apply for the first time to polymers in this work, is readily extendable to any dye that changes lifetime on binding.
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Affiliation(s)
- Timothy J Murdoch
- Department of Materials, Loughborough University, LE11 1RJ Loughborough, UK.
| | | | - Julien Pinaud
- ICGM, Univ Montpellier, CNRS, ENSCM, Montpellier, France
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3
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Gottwald J, Balke J, Stellmacher J, van Vorst K, Ghazisaeedi F, Fulde M, Alexiev U. Cy3-Based Nanoviscosity Determination of Mucus: Effect of Mucus Collection Methods and Antibiotics Treatment. Macromol Biosci 2024:e2300437. [PMID: 38625085 DOI: 10.1002/mabi.202300437] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2023] [Revised: 12/21/2023] [Indexed: 04/17/2024]
Abstract
The integrity of the protective mucus layer as a primary defense against pathogen invasion and microbial leakage into the intestinal epithelium can be compromised by the effects of antibiotics on the commensal microbiome. Changes in mucus integrity directly affect the solvent viscosity in the immediate vicinity of the mucin network, that is, the nanoviscosity, which in turn affects both biochemical reactions and selective transport. To assess mucus nanoviscosity, a reliable readout via the viscosity-dependent fluorescence lifetime of the molecular rotor dye cyanine 3 is established and nanoviscosities from porcine and murine ex vivo mucus are determined. To account for different mucin concentrations due to the removal of digestive residues during mucus collection, the power law dependence of mucin concentration on viscosity is used. The impact of antibiotics combinations (meropenem/vancomycin, gentamycin/ampicillin) on ex vivo intestinal mucus nanoviscosity is presented. The significant increase in viscosity of murine intestinal mucus after treatment suggests an effect of antibiotics on the microbiota that affects mucus integrity. This method will be a useful tool to assess how drugs, directly or indirectly, affect mucus integrity. Additionally, the method can be utilized to analyze the role of mucus nanoviscosity in health and disease, as well as in drug development.
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Affiliation(s)
- Jacqueline Gottwald
- Physics Department, Freie Universität Berlin, Arnimallee 14, 14195, Berlin, Germany
| | - Jens Balke
- Physics Department, Freie Universität Berlin, Arnimallee 14, 14195, Berlin, Germany
| | - Johannes Stellmacher
- Physics Department, Freie Universität Berlin, Arnimallee 14, 14195, Berlin, Germany
| | - Kira van Vorst
- Centre for Infection Medicine, Institute of Microbiology and Epizootics, Freie Universität Berlin, Robert-von-Ostertag-Str. 7, 14163, Berlin, Germany
| | - Fereshteh Ghazisaeedi
- Centre for Infection Medicine, Institute of Microbiology and Epizootics, Freie Universität Berlin, Robert-von-Ostertag-Str. 7, 14163, Berlin, Germany
| | - Marcus Fulde
- Centre for Infection Medicine, Institute of Microbiology and Epizootics, Freie Universität Berlin, Robert-von-Ostertag-Str. 7, 14163, Berlin, Germany
| | - Ulrike Alexiev
- Physics Department, Freie Universität Berlin, Arnimallee 14, 14195, Berlin, Germany
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4
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Alexiev U, Rühl E. Visualization of Nanocarriers and Drugs in Cells and Tissue. Handb Exp Pharmacol 2024; 284:153-189. [PMID: 37566121 DOI: 10.1007/164_2023_684] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/12/2023]
Abstract
In this chapter, the visualization of nanocarriers and drugs in cells and tissue is reviewed. This topic is tightly connected to modern drug delivery, which relies on nanoscopic drug formulation approaches and the ability to probe nanoparticulate systems selectively in cells and tissue using advanced spectroscopic and microscopic techniques. We first give an overview of the breadth of this research field. Then, we mainly focus on topical drug delivery to the skin and discuss selected visualization techniques from spectromicroscopy, such as scanning transmission X-ray microscopy and fluorescence lifetime imaging. These techniques rely on the sensitive and quantitative detection of the topically applied drug delivery systems and active substances, either by exploiting their molecular properties or by introducing environmentally sensitive probes that facilitate their detection.
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Affiliation(s)
- Ulrike Alexiev
- Fachbereich Physik, Freie Universität Berlin, Berlin, Germany.
| | - Eckart Rühl
- Physikalische Chemie, Freie Universität Berlin, Berlin, Germany.
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5
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Liu L, Zhao W, Ma Q, Gao Y, Wang W, Zhang X, Dong Y, Zhang T, Liang Y, Han S, Cao J, Wang X, Sun W, Ma H, Sun Y. Functional nano-systems for transdermal drug delivery and skin therapy. NANOSCALE ADVANCES 2023; 5:1527-1558. [PMID: 36926556 PMCID: PMC10012846 DOI: 10.1039/d2na00530a] [Citation(s) in RCA: 17] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/09/2022] [Accepted: 11/27/2022] [Indexed: 06/18/2023]
Abstract
Transdermal drug delivery is one of the least intrusive and patient-friendly ways for therapeutic agent administration. Recently, functional nano-systems have been demonstrated as one of the most promising strategies to treat skin diseases by improving drug penetration across the skin barrier and achieving therapeutically effective drug concentrations in the target cutaneous tissues. Here, a brief review of functional nano-systems for promoting transdermal drug delivery is presented. The fundamentals of transdermal delivery, including skin biology and penetration routes, are introduced. The characteristics of functional nano-systems for facilitating transdermal drug delivery are elucidated. Moreover, the fabrication of various types of functional transdermal nano-systems is systematically presented. Multiple techniques for evaluating the transdermal capacities of nano-systems are illustrated. Finally, the advances in the applications of functional transdermal nano-systems for treating different skin diseases are summarized.
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Affiliation(s)
- Lijun Liu
- School of Pharmacy, Qingdao University Qingdao 266071 China
- The Shandong Consortium in the Yellow River Basin for Prevention, Treatment and Drug Development for Primary Diseases Related to Alcoholism, Qingdao University Qingdao 266021 China
| | - Wenbin Zhao
- School of Pharmacy, Qingdao University Qingdao 266071 China
- The Shandong Consortium in the Yellow River Basin for Prevention, Treatment and Drug Development for Primary Diseases Related to Alcoholism, Qingdao University Qingdao 266021 China
| | - Qingming Ma
- School of Pharmacy, Qingdao University Qingdao 266071 China
- The Shandong Consortium in the Yellow River Basin for Prevention, Treatment and Drug Development for Primary Diseases Related to Alcoholism, Qingdao University Qingdao 266021 China
| | - Yang Gao
- School of Pharmacy, Qingdao University Qingdao 266071 China
| | - Weijiang Wang
- School of Pharmacy, Qingdao University Qingdao 266071 China
- The Shandong Consortium in the Yellow River Basin for Prevention, Treatment and Drug Development for Primary Diseases Related to Alcoholism, Qingdao University Qingdao 266021 China
| | - Xuan Zhang
- School of Pharmacy, Qingdao University Qingdao 266071 China
| | - Yunxia Dong
- School of Pharmacy, Qingdao University Qingdao 266071 China
| | - Tingting Zhang
- School of Pharmacy, Qingdao University Qingdao 266071 China
| | - Yan Liang
- School of Pharmacy, Qingdao University Qingdao 266071 China
| | - Shangcong Han
- School of Pharmacy, Qingdao University Qingdao 266071 China
| | - Jie Cao
- School of Pharmacy, Qingdao University Qingdao 266071 China
| | - Xinyu Wang
- Institute of Thermal Science and Technology, Shandong University Jinan 250061 China
| | - Wentao Sun
- School of Health and Life Sciences, University of Health and Rehabilitation Sciences Qingdao 266113 China
| | - Haifeng Ma
- Department of Geriatrics, Zibo Municipal Hospital Zibo 255400 China
| | - Yong Sun
- School of Pharmacy, Qingdao University Qingdao 266071 China
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6
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Ren J, Andrikopoulos N, Velonia K, Tang H, Cai R, Ding F, Ke PC, Chen C. Chemical and Biophysical Signatures of the Protein Corona in Nanomedicine. J Am Chem Soc 2022; 144:9184-9205. [PMID: 35536591 DOI: 10.1021/jacs.2c02277] [Citation(s) in RCA: 86] [Impact Index Per Article: 43.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
An inconvenient hurdle in the practice of nanomedicine is the protein corona, a spontaneous collection of biomolecular species by nanoparticles in living systems. The protein corona is dynamic in composition and may entail improved water suspendability and compromised delivery and targeting to the nanoparticles. How much of this nonspecific protein ensemble is determined by the chemistry of the nanoparticle core and its surface functionalization, and how much of this entity is dictated by the biological environments that vary spatiotemporally in vivo? How do we "live with" and exploit the protein corona without significantly sacrificing the efficacy of nanomedicines in diagnosing and curing human diseases? This article discusses the chemical and biophysical signatures of the protein corona and ponders challenges ahead for the field of nanomedicine.
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Affiliation(s)
- Jiayu Ren
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety and CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology of China, Beijing 100190, China.,University of Chinese Academy of Sciences, Beijing 100049, China
| | - Nicholas Andrikopoulos
- Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University, 381 Royal Parade, Parkville, VIC 3052, Australia
| | - Kelly Velonia
- Department of Materials Science and Technology, University of Crete, Heraklion 70013, Greece
| | - Huayuan Tang
- Department of Physics and Astronomy, Clemson University, Clemson, South Carolina 29634, United States
| | - Rong Cai
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety and CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology of China, Beijing 100190, China
| | - Feng Ding
- Department of Physics and Astronomy, Clemson University, Clemson, South Carolina 29634, United States
| | - Pu Chun Ke
- Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University, 381 Royal Parade, Parkville, VIC 3052, Australia.,Nanomedicine Center, The GBA National Institute for Nanotechnology Innovation, 136 Kaiyuan Avenue, Guangzhou 510700, China
| | - Chunying Chen
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety and CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology of China, Beijing 100190, China.,University of Chinese Academy of Sciences, Beijing 100049, China.,Nanomedicine Center, The GBA National Institute for Nanotechnology Innovation, 136 Kaiyuan Avenue, Guangzhou 510700, China
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7
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Dong P, Stellmacher J, Bouchet LM, Nieke M, Kumar A, Osorio‐Blanco ER, Nagel G, Lohan SB, Teutloff C, Patzelt A, Schäfer‐Korting M, Calderón M, Meinke MC, Alexiev U. A Dual Fluorescence–Spin Label Probe for Visualization and Quantification of Target Molecules in Tissue by Multiplexed FLIM–EPR Spectroscopy. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202012852] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Pin Dong
- Department of Dermatology, Venereology and Allergology Charité Universitätsmedizin Berlin corporate member of Freie Universität Berlin Humboldt-Universität zu Berlin, and Berlin Institute of Health Berlin Germany
- Freie Universität Berlin Institute of Pharmacy Berlin Germany
| | - Johannes Stellmacher
- Freie Universität Berlin Institute of Experimental Physics Department of Physics Berlin Germany
| | - Lydia M. Bouchet
- Freie Universität Berlin Institute of Chemistry and Biochemistry Berlin Germany
| | - Marius Nieke
- Freie Universität Berlin Institute of Experimental Physics Department of Physics Berlin Germany
- Humboldt-Universität zu Berlin Institute of Biology Berlin Germany
| | - Amit Kumar
- Freie Universität Berlin Institute of Chemistry and Biochemistry Berlin Germany
| | | | - Gregor Nagel
- Freie Universität Berlin Institute of Chemistry and Biochemistry Berlin Germany
| | - Silke B. Lohan
- Department of Dermatology, Venereology and Allergology Charité Universitätsmedizin Berlin corporate member of Freie Universität Berlin Humboldt-Universität zu Berlin, and Berlin Institute of Health Berlin Germany
| | - Christian Teutloff
- Freie Universität Berlin Institute of Experimental Physics Department of Physics Berlin Germany
| | - Alexa Patzelt
- Department of Dermatology, Venereology and Allergology Charité Universitätsmedizin Berlin corporate member of Freie Universität Berlin Humboldt-Universität zu Berlin, and Berlin Institute of Health Berlin Germany
| | | | - Marcelo Calderón
- Freie Universität Berlin Institute of Chemistry and Biochemistry Berlin Germany
- POLYMAT Faculty of Chemistry University of the Basque Country UPV/EHU 20018 Donostia-San Sebastián Spain
- IKERBASQUE Basque Foundation for Science 48013 Bilbao Spain
| | - Martina C. Meinke
- Department of Dermatology, Venereology and Allergology Charité Universitätsmedizin Berlin corporate member of Freie Universität Berlin Humboldt-Universität zu Berlin, and Berlin Institute of Health Berlin Germany
| | - Ulrike Alexiev
- Freie Universität Berlin Institute of Experimental Physics Department of Physics Berlin Germany
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8
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Dong P, Stellmacher J, Bouchet LM, Nieke M, Kumar A, Osorio‐Blanco ER, Nagel G, Lohan SB, Teutloff C, Patzelt A, Schäfer‐Korting M, Calderón M, Meinke MC, Alexiev U. A Dual Fluorescence-Spin Label Probe for Visualization and Quantification of Target Molecules in Tissue by Multiplexed FLIM-EPR Spectroscopy. Angew Chem Int Ed Engl 2021; 60:14938-14944. [PMID: 33544452 PMCID: PMC8251738 DOI: 10.1002/anie.202012852] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2020] [Revised: 11/27/2021] [Indexed: 12/30/2022]
Abstract
Simultaneous visualization and concentration quantification of molecules in biological tissue is an important though challenging goal. The advantages of fluorescence lifetime imaging microscopy (FLIM) for visualization, and electron paramagnetic resonance (EPR) spectroscopy for quantification are complementary. Their combination in a multiplexed approach promises a successful but ambitious strategy because of spin label-mediated fluorescence quenching. Here, we solved this problem and present the molecular design of a dual label (DL) compound comprising a highly fluorescent dye together with an EPR spin probe, which also renders the fluorescence lifetime to be concentration sensitive. The DL can easily be coupled to the biomolecule of choice, enabling in vivo and in vitro applications. This novel approach paves the way for elegant studies ranging from fundamental biological investigations to preclinical drug research, as shown in proof-of-principle penetration experiments in human skin ex vivo.
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Affiliation(s)
- Pin Dong
- Department of Dermatology, Venereology and AllergologyCharité Universitätsmedizin Berlincorporate member of Freie Universität BerlinHumboldt-Universität zu Berlin, and Berlin Institute of HealthBerlinGermany
- Freie Universität BerlinInstitute of PharmacyBerlinGermany
| | - Johannes Stellmacher
- Freie Universität BerlinInstitute of Experimental PhysicsDepartment of PhysicsBerlinGermany
| | - Lydia M. Bouchet
- Freie Universität BerlinInstitute of Chemistry and BiochemistryBerlinGermany
| | - Marius Nieke
- Freie Universität BerlinInstitute of Experimental PhysicsDepartment of PhysicsBerlinGermany
- Humboldt-Universität zu BerlinInstitute of BiologyBerlinGermany
| | - Amit Kumar
- Freie Universität BerlinInstitute of Chemistry and BiochemistryBerlinGermany
| | | | - Gregor Nagel
- Freie Universität BerlinInstitute of Chemistry and BiochemistryBerlinGermany
| | - Silke B. Lohan
- Department of Dermatology, Venereology and AllergologyCharité Universitätsmedizin Berlincorporate member of Freie Universität BerlinHumboldt-Universität zu Berlin, and Berlin Institute of HealthBerlinGermany
| | - Christian Teutloff
- Freie Universität BerlinInstitute of Experimental PhysicsDepartment of PhysicsBerlinGermany
| | - Alexa Patzelt
- Department of Dermatology, Venereology and AllergologyCharité Universitätsmedizin Berlincorporate member of Freie Universität BerlinHumboldt-Universität zu Berlin, and Berlin Institute of HealthBerlinGermany
| | | | - Marcelo Calderón
- Freie Universität BerlinInstitute of Chemistry and BiochemistryBerlinGermany
- POLYMATFaculty of ChemistryUniversity of the Basque CountryUPV/EHU20018Donostia-San SebastiánSpain
- IKERBASQUEBasque Foundation for Science48013BilbaoSpain
| | - Martina C. Meinke
- Department of Dermatology, Venereology and AllergologyCharité Universitätsmedizin Berlincorporate member of Freie Universität BerlinHumboldt-Universität zu Berlin, and Berlin Institute of HealthBerlinGermany
| | - Ulrike Alexiev
- Freie Universität BerlinInstitute of Experimental PhysicsDepartment of PhysicsBerlinGermany
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9
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Achazi K, Haag R, Ballauff M, Dernedde J, Kizhakkedathu JN, Maysinger D, Multhaup G. Understanding the Interaction of Polyelectrolyte Architectures with Proteins and Biosystems. Angew Chem Int Ed Engl 2021; 60:3882-3904. [PMID: 32589355 PMCID: PMC7894192 DOI: 10.1002/anie.202006457] [Citation(s) in RCA: 53] [Impact Index Per Article: 17.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2020] [Indexed: 02/06/2023]
Abstract
The counterions neutralizing the charges on polyelectrolytes such as DNA or heparin may dissociate in water and greatly influence the interaction of such polyelectrolytes with biomolecules, particularly proteins. In this Review we give an overview of studies on the interaction of proteins with polyelectrolytes and how this knowledge can be used for medical applications. Counterion release was identified as the main driving force for the binding of proteins to polyelectrolytes: Patches of positive charge become multivalent counterions of the polyelectrolyte and lead to the release of counterions from the polyelectrolyte and a concomitant increase in entropy. This is shown from investigations on the interaction of proteins with natural and synthetic polyelectrolytes. Special emphasis is paid to sulfated dendritic polyglycerols (dPGS). The Review demonstrates that we are moving to a better understanding of charge-charge interactions in systems of biological relevance. Research along these lines will aid and promote the design of synthetic polyelectrolytes for medical applications.
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Affiliation(s)
- Katharina Achazi
- Institut für Chemie und BiochemieFreie Universität BerlinTakustrasse 314195BerlinGermany
| | - Rainer Haag
- Institut für Chemie und BiochemieFreie Universität BerlinTakustrasse 314195BerlinGermany
| | - Matthias Ballauff
- Institut für Chemie und BiochemieFreie Universität BerlinTakustrasse 314195BerlinGermany
- IRIS AdlershofHumboldt Universität zu BerlinZum Grossen Windkanal 612489BerlinGermany
| | - Jens Dernedde
- Charité-Universitätsmedizin BerlinInstitute of Laboratory MedicineClinical Chemistry, and PathobiochemistryCVK Augustenburger Platz 113353BerlinGermany
| | - Jayachandran N. Kizhakkedathu
- Centre for Blood ResearchDepartment of Pathology and Laboratory MedicineLife Science InstituteDepartment of ChemistrySchool of Biomedical EngineeringUniversity of British ColumbiaVancouverV6T 1Z3Canada
| | - Dusica Maysinger
- Department of Pharmacology and TherapeuticsMcGill UniversityMontrealH3G 1Y6Canada
| | - Gerd Multhaup
- Department of Pharmacology and TherapeuticsMcGill UniversityMontrealH3G 1Y6Canada
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10
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Achazi K, Haag R, Ballauff M, Dernedde J, Kizhakkedathu JN, Maysinger D, Multhaup G. Wechselwirkung von Polyelektrolyt‐Architekturen mit Proteinen und Biosystemen. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202006457] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Katharina Achazi
- Institut für Chemie und Biochemie Freie Universität Berlin Takustraße 3 14195 Berlin Deutschland
| | - Rainer Haag
- Institut für Chemie und Biochemie Freie Universität Berlin Takustraße 3 14195 Berlin Deutschland
| | - Matthias Ballauff
- Institut für Chemie und Biochemie Freie Universität Berlin Takustraße 3 14195 Berlin Deutschland
- IRIS Adlershof Humboldt-Universität zu Berlin Zum Großen Windkanal 6 12489 Berlin Deutschland
| | - Jens Dernedde
- Charité-Universitätsmedizin Berlin Institut für Laboratoriumsmedizin Klinische Chemie und Pathobiochemie CVK Augustenburger Platz 1 13353 Berlin Deutschland
| | - Jayachandran N. Kizhakkedathu
- Centre for Blood Research Department of Pathology and Laboratory Medicine Life Science Institute Department of Chemistry School of Biomedical Engineering University of British Columbia Vancouver V6T 1Z3 Kanada
| | - Dusica Maysinger
- Department of Pharmacology and Therapeutics McGill University Montreal H3G 1Y6 Kanada
| | - Gerd Multhaup
- Department of Pharmacology and Therapeutics McGill University Montreal H3G 1Y6 Kanada
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11
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Gronbach L, Wolff C, Klinghammer K, Stellmacher J, Jurmeister P, Alexiev U, Schäfer-Korting M, Tinhofer I, Keilholz U, Zoschke C. A multilayered epithelial mucosa model of head neck squamous cell carcinoma for analysis of tumor-microenvironment interactions and drug development. Biomaterials 2020; 258:120277. [PMID: 32795620 DOI: 10.1016/j.biomaterials.2020.120277] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2020] [Revised: 06/23/2020] [Accepted: 07/31/2020] [Indexed: 12/24/2022]
Abstract
Pharmacotherapy of head and neck squamous cell carcinoma (HNSCC) often fails due to the development of chemoresistance and severe systemic side effects of current regimens limiting dose escalation. Preclinical models comprising all major elements of treatment resistance are urgently needed for the development of new strategies to overcome these limitations. For model establishment, we used tumor cells from patient-derived HNSCC xenografts or cell lines (SCC-25, UM-SCC-22B) and characterized the model phenotype. Docetaxel and cetuximab were selected for comparative analysis of drug-related effects at topical and systemic administration. Cetuximab cell binding was mapped by cluster-based fluorescence lifetime imaging microscopy.The tumor oral mucosa (TOM) models displayed unstructured, hyper-proliferative, and pleomorphic cell layers, reflecting well the original tumor morphology and grading. Dose- and time-dependent effects of docetaxel on tumor size, apoptosis, hypoxia, and interleukin-6 release were observed. Although the spectrum of effects was comparable, significantly lower doses were required to achieve similar docetaxel-induced changes at topical compared to systemic application. Despite displaying anti-proliferative effects in monolayer cultures, cetuximab treatment showed only minor effects in TOM models. This was not due to inefficient cetuximab uptake or target cell binding but likely mediated by microenvironmental components.We developed multi-layered HNSCC models, closely reflecting tumor morphology and displaying complex interactions between the tumor and its microenvironment. Topical application of docetaxel emerged as promising option for HNSCC treatment. Aside from the development of novel strategies for topical drug delivery, our tumor model might help to better understand key regulators of drug-tumor-interactions.
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Affiliation(s)
- Leonie Gronbach
- Freie Universität Berlin, Institute of Pharmacy (Pharmacology & Toxicology), Königin-Luise-Str. 2+4, 14195, Berlin, Germany
| | - Christopher Wolff
- Freie Universität Berlin, Institute of Pharmacy (Pharmacology & Toxicology), Königin-Luise-Str. 2+4, 14195, Berlin, Germany
| | - Konrad Klinghammer
- Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, And Berlin Institute of Health, Department of Hematology and Oncology, Charitéplatz 1, 10117, Berlin, Germany
| | - Johannes Stellmacher
- Freie Universität Berlin, Institute of Experimental Physics, Arnimallee 14, 14195, Berlin, Germany
| | - Philipp Jurmeister
- Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, And Berlin Institute of Health, Institute of Pathology, Charitéplatz 1, 10117, Berlin, Germany
| | - Ulrike Alexiev
- Freie Universität Berlin, Institute of Experimental Physics, Arnimallee 14, 14195, Berlin, Germany
| | - Monika Schäfer-Korting
- Freie Universität Berlin, Institute of Pharmacy (Pharmacology & Toxicology), Königin-Luise-Str. 2+4, 14195, Berlin, Germany
| | - Ingeborg Tinhofer
- Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, And Berlin Institute of Health, Department of Radiooncology and Radiotherapy, Charitéplatz 1, 10117, Berlin, Germany; German Cancer Research Center (DKFZ), Heidelberg and German Cancer Consortium (DKTK) Partner Site Berlin, Berlin, Germany
| | - Ulrich Keilholz
- Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, And Berlin Institute of Health, Comprehensive Cancer Center, Charitéplatz 1, 10117, Berlin, Germany
| | - Christian Zoschke
- Freie Universität Berlin, Institute of Pharmacy (Pharmacology & Toxicology), Königin-Luise-Str. 2+4, 14195, Berlin, Germany.
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12
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Brodwolf R, Volz-Rakebrand P, Stellmacher J, Wolff C, Unbehauen M, Haag R, Schäfer-Korting M, Zoschke C, Alexiev U. Faster, sharper, more precise: Automated Cluster-FLIM in preclinical testing directly identifies the intracellular fate of theranostics in live cells and tissue. Theranostics 2020; 10:6322-6336. [PMID: 32483455 PMCID: PMC7255044 DOI: 10.7150/thno.42581] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2019] [Accepted: 04/01/2020] [Indexed: 12/25/2022] Open
Abstract
Fluorescence microscopy is widely used for high content screening in 2D cell cultures and 3D models. In particular, 3D tissue models are gaining major relevance in modern drug development. Enabling direct multiparametric evaluation of complex samples, fluorescence lifetime imaging (FLIM) adds a further level to intensity imaging by the sensitivity of the fluorescence lifetime to the microenvironment. However, the use of FLIM is limited amongst others by the acquisition of sufficient photon numbers without phototoxic effects in live cells. Herein, we developed a new cluster-based analysis method to enhance insight, and significantly speed up analysis and measurement time for the accurate translation of fluorescence lifetime information into pharmacological pathways. Methods: We applied a fluorescently-labeled dendritic core-multishell nanocarrier and its cargo Bodipy as molecules of interest (MOI) to human cells and reconstructed human tissue. Following the sensitivity and specificity assessment of the fitting-free Cluster-FLIM analysis of data in silico and in vitro, we evaluated the dynamics of cellular molecule uptake and intracellular interactions. For 3D live tissue investigations, we applied multiphoton (mp) FLIM. Owing to Cluster-FLIM's statistics-based fitting-free analysis, we utilized this approach for automatization. Results: To discriminate the fluorescence lifetime signatures of 5 different fluorescence species in a single color channel, the Cluster-FLIM method requires only 170, respectively, 90 counts per pixel to obtain 95% sensitivity (hit rate) and 95% specificity (correct rejection rate). Cluster-FLIM revealed cellular interactions of MOIs, representing their spatiotemporal intracellular fate. In a setting of an automated workflow, the assessment of lysosomal trapping of the MOI revealed relevant differences between normal and tumor cells, as well as between 2D and 3D models. Conclusion: The automated Cluster-FLIM tool is fitting-free, providing images with enhanced information, contrast, and spatial resolution at short exposure times and low fluorophore concentrations. Thereby, Cluster-FLIM increases the applicability of FLIM in high content analysis of target molecules in drug development and beyond.
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13
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Ober K, Volz-Rakebrand P, Stellmacher J, Brodwolf R, Licha K, Haag R, Alexiev U. Expanding the Scope of Reporting Nanoparticles: Sensing of Lipid Phase Transitions and Nanoviscosities in Lipid Membranes. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:11422-11434. [PMID: 31378067 DOI: 10.1021/acs.langmuir.9b01372] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Biological membrane fluidity and thus the local viscosity in lipid membranes are of vital importance for many life processes and implicated in various diseases. Here, we introduce a novel viscosity sensor design for lipid membranes based on a reporting nanoparticle, a sulfated dendritic polyglycerol (dPGS), conjugated to a fluorescent molecular rotor, indocarbocyanine (ICC). We show that dPGS-ICC provides high affinity to lipid bilayers, enabling viscosity sensing in the lipid tail region. The systematic characterization of viscosity- and temperature-dependent photoisomerization properties of ICC and dPGS-ICC allowed us to determine membrane viscosities in different model systems and in living cells using fluorescence lifetime imaging (FLIM). dPGS-ICC distinguishes between ordered lipids and the onset of membrane defects in small unilamellar single lipid vesicles and is highly sensitive in the fluid phase to small changes in viscosity introduced by cholesterol. In microscopy-based viscosity measurements of large multilamellar vesicles, we observed an order of magnitude more viscous environments by dPGS-ICC, lending support to the hypothesis of heterogeneous nanoviscosity environments even in single lipid bilayers. The existence of such complex viscosity structures could explain the large variation in the apparent membrane viscosity values found in the literature, depending on technique and probe, both for model membranes and live cells. In HeLa cells, a tumor-derived cell line, our nanoparticle-based viscosity sensor detects a membrane viscosity of ∼190 cP and is able to discriminate between cell membrane and intracellular vesicle localization. Thus, our results show the versatility of the dPGS-ICC nano-conjugate in physicochemical and biomedical applications by adding a new analytical functionality to its medical properties.
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Affiliation(s)
- Katja Ober
- Institut für Experimentalphysik , Freie Universität Berlin , Arnimallee 14 , 14195 Berlin , Germany
| | - Pierre Volz-Rakebrand
- Institut für Experimentalphysik , Freie Universität Berlin , Arnimallee 14 , 14195 Berlin , Germany
| | - Johannes Stellmacher
- Institut für Experimentalphysik , Freie Universität Berlin , Arnimallee 14 , 14195 Berlin , Germany
| | - Robert Brodwolf
- Institut für Experimentalphysik , Freie Universität Berlin , Arnimallee 14 , 14195 Berlin , Germany
| | - Kai Licha
- Mivenion GmbH , Robert-Koch-Platz 4 , 10115 Berlin , Germany
| | - Rainer Haag
- Institut für Chemie und Biochemie , Freie Universität Berlin , Takustraße 3 , 14195 Berlin , Germany
| | - Ulrike Alexiev
- Institut für Experimentalphysik , Freie Universität Berlin , Arnimallee 14 , 14195 Berlin , Germany
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14
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Xu X, Angioletti-Uberti S, Lu Y, Dzubiella J, Ballauff M. Interaction of Proteins with Polyelectrolytes: Comparison of Theory to Experiment. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:5373-5391. [PMID: 30095921 DOI: 10.1021/acs.langmuir.8b01802] [Citation(s) in RCA: 43] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
We discuss recent investigations of the interaction of polyelectrolytes with proteins. In particular, we review our recent studies on the interaction of simple proteins such as human serum albumin (HSA) and lysozyme with linear polyelectrolytes, charged dendrimers, charged networks, and polyelectrolyte brushes. In all cases discussed here, we combined experimental work with molecular dynamics (MD) simulations and mean-field theories. In particular, isothermal titration calorimetry (ITC) has been employed to obtain the respective binding constants Kb and the Gibbs free energy of binding. MD simulations with explicit counterions but implicit water demonstrate that counterion release is the main driving force for the binding of proteins to strongly charged polyelectrolytes: patches of positive charges located on the surface of the protein become multivalent counterions of the polyelectrolyte, thereby releasing a number of counterions condensed on the polyelectrolyte. The binding Gibbs free energy due to counterion release is predicted to scale with the logarithm of the salt concentration in the system, which is verified by both simulations and experiment. In several cases, namely, for the interaction of proteins with linear polyelectrolytes and highly charged hydrophilic dendrimers, the binding constant could be calculated from simulations to very good approximation. This finding demonstrated that in these cases explicit hydration effects do not contribute to the Gibbs free energy of binding. The Gibbs free energy can also be used to predict the kinetics of protein uptake by microgels for a given system by applying dynamic density functional theory. The entire discussion demonstrates that the direct comparison of theory with experiments can lead to a full understanding of the interaction of proteins with charged polymers. Possible implications for applications, such as drug design, are discussed.
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Affiliation(s)
- Xiao Xu
- School of Chemical Engineering , Nanjing University of Science and Technology , 200 Xiao Ling Wei , Nanjing 210094 , P. R. China
| | - Stefano Angioletti-Uberti
- Department of Materials , Imperial College London , London SW7 2AZ - UK , U.K
- International Research Centre for Soft Matter , Beijing University of Chemical Technology , 100099 Beijing , PR China
| | - Yan Lu
- Soft Matter and Functional Materials , Helmholtz-Zentrum Berlin für Materialien und Energie GmbH , 14109 Berlin , Germany
- Institute of Chemistry , University of Potsdam , 14467 Potsdam , Germany
| | - Joachim Dzubiella
- Soft Matter and Functional Materials , Helmholtz-Zentrum Berlin für Materialien und Energie GmbH , 14109 Berlin , Germany
- Physikalisches Institut , Albert-Ludwigs-Universität , 79104 Freiburg , Germany
| | - Matthias Ballauff
- Soft Matter and Functional Materials , Helmholtz-Zentrum Berlin für Materialien und Energie GmbH , 14109 Berlin , Germany
- Institut für Physik , Humboldt-Universität zu Berlin , 12489 Berlin , Germany
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15
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Ran Q, Xu X, Dzubiella J, Haag R, Ballauff M. Thermodynamics of the Binding of Lysozyme to a Dendritic Polyelectrolyte: Electrostatics Versus Hydration. ACS OMEGA 2018; 3:9086-9095. [PMID: 31459043 PMCID: PMC6644519 DOI: 10.1021/acsomega.8b01493] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/29/2018] [Accepted: 07/30/2018] [Indexed: 05/25/2023]
Abstract
The interaction between dendritic polyglycerol sulfate (dPGS) of the second generation and lysozyme was studied by isothermal titration calorimetry (ITC) at different temperatures and salt concentrations. Analysis by ITC showed that 2-3 lysozyme molecules were bound to each dPGS. The resulting binding constant K b and the Gibbs free energy ΔG o decreased markedly with increasing salt concentration but were nearly independent of temperature. The salt dependence of K b led to the conclusion that ca. 3 counterions bound to dPGS were released upon complex formation. The gain in entropy ΔG ci by this counterion-release scales logarithmically with salt concentration and is the main driving force for binding. The temperature dependence of ΔG o was analyzed by the nonlinear van't Hoff plot, taking into account a finite heat capacity change ΔC p,vH. This evaluation led to the binding enthalpy ΔH vH and the binding entropy ΔS vH. Both quantities varied strongly with temperature and even changed sign, but they compensated each other throughout the entire range of temperature. Coarse-grained computer simulations with explicit salt and implicit water were used to obtain the binding free energies that agreed with ITC results. Thus, electrostatic factors were the driving forces for binding whereas all hydration contributions leading to the strongly varying ΔH vH and ΔS vH canceled out. The calorimetric enthalpy ΔH ITC measured directly by ITC differed largely from ΔH vH. ITC measurements done in two buffer systems with different ionization enthalpies revealed that binding was linked to buffer ionization and a partial protonation of the protein.
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Affiliation(s)
- Qidi Ran
- Institute
of Chemistry and Biochemistry, Freie Universität
Berlin, Takustr. 3, 14195 Berlin, Germany
- Institute
of Soft Matter and Functional Materials, Helmholtz-Zentrum Berlin, Hahn-Meitner-Platz 1, 14109 Berlin, Germany
- Multifunctional
Biomaterials for Medicine, Helmholtz Virtual Institute, Kantstr. 55, 14513 Teltow-Seehof, Germany
| | - Xiao Xu
- School
of Chemical Engineering, Nanjing University
of Science and Technology, 200 Xiao Ling Wei, 210094 Nanjing, P. R. China
| | - Joachim Dzubiella
- Institute
of Soft Matter and Functional Materials, Helmholtz-Zentrum Berlin, Hahn-Meitner-Platz 1, 14109 Berlin, Germany
- Multifunctional
Biomaterials for Medicine, Helmholtz Virtual Institute, Kantstr. 55, 14513 Teltow-Seehof, Germany
- Physikalisches
Institut, Albert-Ludwigs-Universität, Hermann-Herder-Str. 3, 79104 Freiburg, Germany
| | - Rainer Haag
- Institute
of Chemistry and Biochemistry, Freie Universität
Berlin, Takustr. 3, 14195 Berlin, Germany
- Multifunctional
Biomaterials for Medicine, Helmholtz Virtual Institute, Kantstr. 55, 14513 Teltow-Seehof, Germany
| | - Matthias Ballauff
- Institute
of Soft Matter and Functional Materials, Helmholtz-Zentrum Berlin, Hahn-Meitner-Platz 1, 14109 Berlin, Germany
- Multifunctional
Biomaterials for Medicine, Helmholtz Virtual Institute, Kantstr. 55, 14513 Teltow-Seehof, Germany
- Institut
für Physik, Humboldt-Universität
zu Berlin, Newtonstr. 15, 12489 Berlin, Germany
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16
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Edlich A, Volz P, Brodwolf R, Unbehauen M, Mundhenk L, Gruber AD, Hedtrich S, Haag R, Alexiev U, Kleuser B. Crosstalk between core-multishell nanocarriers for cutaneous drug delivery and antigen-presenting cells of the skin. Biomaterials 2018; 162:60-70. [PMID: 29438881 DOI: 10.1016/j.biomaterials.2018.01.058] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2017] [Revised: 01/24/2018] [Accepted: 01/31/2018] [Indexed: 01/15/2023]
Abstract
Owing their unique chemical and physical properties core-multishell (CMS) nanocarriers are thought to underlie their exploitable biomedical use for a topical treatment of skin diseases. This highlights the need to consider not only the efficacy of CMS nanocarriers but also the potentially unpredictable and adverse consequences of their exposure thereto. As CMS nanocarriers are able to penetrate into viable layers of normal and stripped human skin ex vivo as well as in in vitro skin disease models the understanding of nanoparticle crosstalk with components of the immune system requires thorough investigation. Our studies highlight the biocompatible properties of CMS nanocarriers on Langerhans cells of the skin as they did neither induce cytotoxicity and genotoxicity nor cause reactive oxygen species (ROS) or an immunological response. Nevertheless, CMS nanocarriers were efficiently taken up by Langerhans cells via divergent endocytic pathways. Bioimaging of CMS nanocarriers by fluorescence lifetime imaging microscopy (FLIM) and flow cytometry indicated not only a localization within the lysosomes but also an energy-dependent exocytosis of unmodified CMS nanocarriers into the extracellular environment.
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Affiliation(s)
- Alexander Edlich
- Institute of Nutritional Science, University of Potsdam, Potsdam, Germany
| | - Pierre Volz
- Institute of Experimental Physics, Freie Universität Berlin, Berlin, Germany
| | - Robert Brodwolf
- Institute of Experimental Physics, Freie Universität Berlin, Berlin, Germany
| | - Michael Unbehauen
- Institute of Chemistry and Biochemistry, Freie Universität Berlin, Berlin, Germany
| | - Lars Mundhenk
- Institute of Veterinary Pathology, Freie Universität Berlin, Berlin, Germany
| | - Achim D Gruber
- Institute of Veterinary Pathology, Freie Universität Berlin, Berlin, Germany
| | - Sarah Hedtrich
- Institute of Pharmacy, Freie Universität Berlin, Berlin, Germany
| | - Rainer Haag
- Institute of Chemistry and Biochemistry, Freie Universität Berlin, Berlin, Germany
| | - Ulrike Alexiev
- Institute of Experimental Physics, Freie Universität Berlin, Berlin, Germany.
| | - Burkhard Kleuser
- Institute of Nutritional Science, University of Potsdam, Potsdam, Germany.
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17
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Xu X, Ran Q, Dey P, Nikam R, Haag R, Ballauff M, Dzubiella J. Counterion-Release Entropy Governs the Inhibition of Serum Proteins by Polyelectrolyte Drugs. Biomacromolecules 2018; 19:409-416. [PMID: 29268015 DOI: 10.1021/acs.biomac.7b01499] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Dendritic polyelectrolytes constitute high potential drugs and carrier systems for biomedical purposes. Still, their biomolecular interaction modes, in particular those determining the binding affinity to proteins, have not been rationalized. We study the interaction of the drug candidate dendritic polyglycerol sulfate (dPGS) with serum proteins using isothermal titration calorimetry (ITC) interpreted and complemented with molecular computer simulations. Lysozyme is first studied as a well-defined model protein to verify theoretical concepts, which are then applied to the important cell adhesion protein family of selectins. We demonstrate that the driving force of the strong complexation, leading to a distinct protein corona, originates mainly from the release of only a few condensed counterions from the dPGS upon binding. The binding constant shows a surprisingly weak dependence on dPGS size (and bare charge) which can be understood by colloidal charge-renormalization effects and by the fact that the magnitude of the dominating counterion-release mechanism almost exclusively depends on the interfacial charge structure of the protein-specific binding patch. Our findings explain the high selectivity of P- and L-selectins over E-selectin for dPGS to act as a highly anti-inflammatory drug. The entire analysis demonstrates that the interaction of proteins with charged polymeric drugs can be predicted by simulations with unprecedented accuracy. Thus, our results open new perspectives for the rational design of charged polymeric drugs and carrier systems.
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Affiliation(s)
- Xiao Xu
- Institut für Weiche Materie und Funktionale Materialien, Helmholtz-Zentrum Berlin , Hahn-Meitner-Platz 1, 14109 Berlin, Germany.,Institut für Physik, Humboldt-Universität zu Berlin , Newtonstr. 15, 12489 Berlin, Germany
| | - Qidi Ran
- Institut für Weiche Materie und Funktionale Materialien, Helmholtz-Zentrum Berlin , Hahn-Meitner-Platz 1, 14109 Berlin, Germany.,Multifunctional Biomaterials for Medicine, Helmholtz Virtual Institute , Kantstrasse 55, 14513 Teltow-Seehof, Germany.,Institut für Chemie und Biochemie, Freie Universität Berlin , Takustrasse 3, 14195 Berlin, Germany
| | - Pradip Dey
- Institut für Chemie und Biochemie, Freie Universität Berlin , Takustrasse 3, 14195 Berlin, Germany.,Polymer Science Unit, Indian Association for the Cultivation of Science , 2A & 2B Raja S. C. Mullick Road, 700032 Kolkata, India
| | - Rohit Nikam
- Institut für Weiche Materie und Funktionale Materialien, Helmholtz-Zentrum Berlin , Hahn-Meitner-Platz 1, 14109 Berlin, Germany.,Institut für Physik, Humboldt-Universität zu Berlin , Newtonstr. 15, 12489 Berlin, Germany
| | - Rainer Haag
- Multifunctional Biomaterials for Medicine, Helmholtz Virtual Institute , Kantstrasse 55, 14513 Teltow-Seehof, Germany.,Institut für Chemie und Biochemie, Freie Universität Berlin , Takustrasse 3, 14195 Berlin, Germany
| | - Matthias Ballauff
- Institut für Weiche Materie und Funktionale Materialien, Helmholtz-Zentrum Berlin , Hahn-Meitner-Platz 1, 14109 Berlin, Germany.,Institut für Physik, Humboldt-Universität zu Berlin , Newtonstr. 15, 12489 Berlin, Germany.,Multifunctional Biomaterials for Medicine, Helmholtz Virtual Institute , Kantstrasse 55, 14513 Teltow-Seehof, Germany
| | - Joachim Dzubiella
- Institut für Weiche Materie und Funktionale Materialien, Helmholtz-Zentrum Berlin , Hahn-Meitner-Platz 1, 14109 Berlin, Germany.,Institut für Physik, Humboldt-Universität zu Berlin , Newtonstr. 15, 12489 Berlin, Germany.,Multifunctional Biomaterials for Medicine, Helmholtz Virtual Institute , Kantstrasse 55, 14513 Teltow-Seehof, Germany
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18
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Volz P, Brodwolf R, Zoschke C, Haag R, Schäfer-Korting M, Alexiev U. White-Light Supercontinuum Laser-Based Multiple Wavelength Excitation for TCSPC-FLIM of Cutaneous Nanocarrier Uptake. ACTA ACUST UNITED AC 2018. [DOI: 10.1515/zpch-2017-1050] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Abstract
We report here on a custom-built time-correlated single photon-counting (TCSPC)-based fluorescence lifetime imaging microscopy (FLIM) setup with a continuously tunable white-light supercontinuum laser combined with acousto-optical tunable filters (AOTF) as an excitation source for simultaneous excitation of multiple spectrally separated fluorophores. We characterized the wavelength dependence of the white-light supercontinuum laser pulse properties and demonstrated the performance of the FLIM setup, aiming to show the experimental setup in depth together with a biomedical application. We herein summarize the physical-technical parameters as well as our approach to map the skin uptake of nanocarriers using FLIM with a resolution compared to spectroscopy. As an example, we focus on the penetration study of indocarbocyanine-labeled dendritic core-multishell nanocarriers (CMS-ICC) into reconstructed human epidermis. Unique fluorescence lifetime signatures of indocarbocyanine-labeled nanocarriers indicate nanocarrier-tissue interactions within reconstructed human epidermis, bringing FLIM close to spectroscopic analysis.
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Affiliation(s)
- Pierre Volz
- Institute of Experimental Physics , Freie Universität Berlin , Arnimallee 14 , 14195 Berlin , Germany
| | - Robert Brodwolf
- Institute of Experimental Physics , Freie Universität Berlin , Arnimallee 14 , 14195 Berlin , Germany
- Helmholtz Virtual Institute – Multifunctional Biomaterials for Medicine, Helmholtz-Zentrum Geesthacht , Kantstr. 55 , 14513 Teltow , Germany
| | - Christian Zoschke
- Institute of Pharmacy (Pharmacology and Toxicology) , Freie Universität Berlin , Königin-Luise-Str. 2+4 , 14195 Berlin , Germany
| | - Rainer Haag
- Helmholtz Virtual Institute – Multifunctional Biomaterials for Medicine, Helmholtz-Zentrum Geesthacht , Kantstr. 55 , 14513 Teltow , Germany
- Institute of Chemistry and Biochemistry , Freie Universität Berlin , Takustr. 3 , 14195 Berlin , Germany
| | - Monika Schäfer-Korting
- Helmholtz Virtual Institute – Multifunctional Biomaterials for Medicine, Helmholtz-Zentrum Geesthacht , Kantstr. 55 , 14513 Teltow , Germany
- Institute of Pharmacy (Pharmacology and Toxicology) , Freie Universität Berlin , Königin-Luise-Str. 2+4 , 14195 Berlin , Germany
| | - Ulrike Alexiev
- Institute of Experimental Physics , Freie Universität Berlin , Arnimallee 14 , 14195 Berlin , Germany
- Helmholtz Virtual Institute – Multifunctional Biomaterials for Medicine, Helmholtz-Zentrum Geesthacht , Kantstr. 55 , 14513 Teltow , Germany
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19
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Radbruch M, Pischon H, Ostrowski A, Volz P, Brodwolf R, Neumann F, Unbehauen M, Kleuser B, Haag R, Ma N, Alexiev U, Mundhenk L, Gruber AD. Dendritic Core-Multishell Nanocarriers in Murine Models of Healthy and Atopic Skin. NANOSCALE RESEARCH LETTERS 2017; 12:64. [PMID: 28116609 PMCID: PMC5256633 DOI: 10.1186/s11671-017-1835-0] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/19/2016] [Accepted: 12/23/2016] [Indexed: 05/22/2023]
Abstract
Dendritic hPG-amid-C18-mPEG core-multishell nanocarriers (CMS) represent a novel class of unimolecular micelles that hold great potential as drug transporters, e.g., to facilitate topical therapy in skin diseases. Atopic dermatitis is among the most common inflammatory skin disorders with complex barrier alterations which may affect the efficacy of topical treatment.Here, we tested the penetration behavior and identified target structures of unloaded CMS after topical administration in healthy mice and in mice with oxazolone-induced atopic dermatitis. We further examined whole body distribution and possible systemic side effects after simulating high dosage dermal penetration by subcutaneous injection.Following topical administration, CMS accumulated in the stratum corneum without penetration into deeper viable epidermal layers. The same was observed in atopic dermatitis mice, indicating that barrier alterations in atopic dermatitis had no influence on the penetration of CMS. Following subcutaneous injection, CMS were deposited in the regional lymph nodes as well as in liver, spleen, lung, and kidney. However, in vitro toxicity tests, clinical data, and morphometry-assisted histopathological analyses yielded no evidence of any toxic or otherwise adverse local or systemic effects of CMS, nor did they affect the severity or course of atopic dermatitis.Taken together, CMS accumulate in the stratum corneum in both healthy and inflammatory skin and appear to be highly biocompatible in the mouse even under conditions of atopic dermatitis and thus could potentially serve to create a depot for anti-inflammatory drugs in the skin.
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Affiliation(s)
- Moritz Radbruch
- Institute of Veterinary Pathology, Freie Universität Berlin, Robert-von-Ostertag-Str. 15, 14163 Berlin, Germany
| | - Hannah Pischon
- Institute of Veterinary Pathology, Freie Universität Berlin, Robert-von-Ostertag-Str. 15, 14163 Berlin, Germany
| | - Anja Ostrowski
- Institute of Veterinary Pathology, Freie Universität Berlin, Robert-von-Ostertag-Str. 15, 14163 Berlin, Germany
| | - Pierre Volz
- Institute of Experimental Physics, Department of Physics, Freie Universität Berlin, Berlin, Germany
| | - Robert Brodwolf
- Institute of Experimental Physics, Department of Physics, Freie Universität Berlin, Berlin, Germany
| | - Falko Neumann
- Institute of Biomaterial Science and Berlin-Brandenburg Centre for Regenerative Therapies, Helmholtz-Zentrum Geesthacht, Teltow, Germany
| | - Michael Unbehauen
- Institute of Chemistry and Biochemistry, Organic Chemistry, Freie Universität Berlin, Berlin, Germany
| | - Burkhard Kleuser
- Institute of Nutritional Science, University of Potsdam, Nuthetal, Germany
| | - Rainer Haag
- Institute of Chemistry and Biochemistry, Organic Chemistry, Freie Universität Berlin, Berlin, Germany
| | - Nan Ma
- Institute of Biomaterial Science and Berlin-Brandenburg Centre for Regenerative Therapies, Helmholtz-Zentrum Geesthacht, Teltow, Germany
| | - Ulrike Alexiev
- Institute of Experimental Physics, Department of Physics, Freie Universität Berlin, Berlin, Germany
| | - Lars Mundhenk
- Institute of Veterinary Pathology, Freie Universität Berlin, Robert-von-Ostertag-Str. 15, 14163 Berlin, Germany
| | - Achim D. Gruber
- Institute of Veterinary Pathology, Freie Universität Berlin, Robert-von-Ostertag-Str. 15, 14163 Berlin, Germany
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20
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Volz P, Schilrreff P, Brodwolf R, Wolff C, Stellmacher J, Balke J, Morilla MJ, Zoschke C, Schäfer-Korting M, Alexiev U. Pitfalls in using fluorescence tagging of nanomaterials: tecto-dendrimers in skin tissue as investigated by Cluster-FLIM. Ann N Y Acad Sci 2017; 1405:202-214. [DOI: 10.1111/nyas.13473] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2017] [Revised: 08/21/2017] [Accepted: 08/24/2017] [Indexed: 12/16/2022]
Affiliation(s)
- Pierre Volz
- Institute of Experimental Physics; Freie Universität Berlin; Berlin Germany
| | - Priscila Schilrreff
- Nanomedicine Research Program (Departamento de Ciencia y Tecnologia); Universidad Nacional de Quilmes; Buenos Aires Argentina
| | - Robert Brodwolf
- Institute of Experimental Physics; Freie Universität Berlin; Berlin Germany
| | - Christopher Wolff
- Institute for Pharmacy (Pharmacology and Toxicology); Freie Universität Berlin; Berlin Germany
| | | | - Jens Balke
- Institute of Experimental Physics; Freie Universität Berlin; Berlin Germany
| | - Maria J. Morilla
- Nanomedicine Research Program (Departamento de Ciencia y Tecnologia); Universidad Nacional de Quilmes; Buenos Aires Argentina
| | - Christian Zoschke
- Institute for Pharmacy (Pharmacology and Toxicology); Freie Universität Berlin; Berlin Germany
| | - Monika Schäfer-Korting
- Institute for Pharmacy (Pharmacology and Toxicology); Freie Universität Berlin; Berlin Germany
| | - Ulrike Alexiev
- Institute of Experimental Physics; Freie Universität Berlin; Berlin Germany
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21
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Time-resolved fluorescence microscopy (FLIM) as an analytical tool in skin nanomedicine. Eur J Pharm Biopharm 2017; 116:111-124. [DOI: 10.1016/j.ejpb.2017.01.005] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2016] [Revised: 01/09/2017] [Accepted: 01/19/2017] [Indexed: 12/22/2022]
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22
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Pant K, Pufe J, Zarschler K, Bergmann R, Steinbach J, Reimann S, Haag R, Pietzsch J, Stephan H. Surface charge and particle size determine the metabolic fate of dendritic polyglycerols. NANOSCALE 2017; 9:8723-8739. [PMID: 28616954 DOI: 10.1039/c7nr01702b] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Dendritic polyglycerols (dPG) are water soluble, polyether-based nanomaterials which hold great potential in diagnostic as well as therapeutic applications. In order to translate them for in vivo applications, a systematic assessment regarding their cell and tissue interactions as well as their metabolic fate in vivo is a crucial step. Herein, we explore the structure-activity relationship of three different sizes (ca. 3, 5, and 10 nm) of neutral dendritic polyglycerol (dPG) and their corresponding negatively charged sulfate analogs (dPGS) on their in vitro and in vivo characteristics. Cellular metabolic activity was studied in A431 and HEK293 cells. Biomolecular corona formation was determined using an electrophoretic mobility shift assay, which showed an increased protein binding of the dPGS even with serum concentrations as low as 20%. An in situ technique, microscale thermophoresis, was employed to address the binding affinities of these nanomaterials with serum proteins such as serum albumin, apo-transferrin, and fibrinogen. In addition, nanoparticle-cell interactions were studied in differentiated THP-1 cells which showed a charge dependent scavenger receptor-mediated uptake. In line with this data, detailed biodistribution and small animal PET imaging studies in Wistar rats using 68Ga-labeled dPG-/dPGS-NOTA conjugates showed that the neutral dPG-NOTA conjugates were quantitatively excreted via the kidneys with a subsequent hepatobiliary excretion with an increase in their size, whereas the polysulfated analogs (dPGS-NOTA) were sequestered preferentially in the liver and kidneys irrespective of their size. Taken together, this systematic study accentuates that the pharmacokinetics of dPGs is critically dependent on the overall size and charge and can be, fine-tuned for the intended requirements in nano-theranostics.
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Affiliation(s)
- Kritee Pant
- Helmholtz-Zentrum Dresden - Rossendorf, Institute of Radiopharmaceutical Cancer Research, Bautzner Landstrasse 400, D-01328 Dresden, Germany.
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23
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Pischon H, Radbruch M, Ostrowski A, Volz P, Gerecke C, Unbehauen M, Hönzke S, Hedtrich S, Fluhr JW, Haag R, Kleuser B, Alexiev U, Gruber AD, Mundhenk L. Stratum corneum targeting by dendritic core-multishell-nanocarriers in a mouse model of psoriasis. NANOMEDICINE-NANOTECHNOLOGY BIOLOGY AND MEDICINE 2017; 13:317-327. [DOI: 10.1016/j.nano.2016.09.004] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/02/2016] [Revised: 08/08/2016] [Accepted: 09/05/2016] [Indexed: 12/23/2022]
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Reimann S, Schneider T, Welker P, Neumann F, Licha K, Schulze-Tanzil G, Wagermaier W, Fratzl P, Haag R. Dendritic polyglycerol anions for the selective targeting of native and inflamed articular cartilage. J Mater Chem B 2017; 5:4754-4767. [DOI: 10.1039/c7tb00618g] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Dye-conjugated polyanions show high affinities toward native and inflamed cartilage dependent on the anionic moiety and the condition of the tissue.
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Affiliation(s)
- Sabine Reimann
- Institute of Chemistry and Biochemistry
- Freie Universität Berlin
- 14195 Berlin
- Germany
| | - Tobias Schneider
- Institute of Anatomy
- General Hospital Nuremberg
- Paracelsus Medical University
- 90419 Nuremberg
- Germany
| | - Pia Welker
- Institute of Anatomy and Cell Biology Charité Universitätsmedizin Berlin
- 10115 Berlin
- Germany
| | - Falko Neumann
- Institute of Chemistry and Biochemistry
- Freie Universität Berlin
- 14195 Berlin
- Germany
| | - Kai Licha
- Institute of Chemistry and Biochemistry
- Freie Universität Berlin
- 14195 Berlin
- Germany
| | - Gundula Schulze-Tanzil
- Institute of Anatomy
- General Hospital Nuremberg
- Paracelsus Medical University
- 90419 Nuremberg
- Germany
| | - Wolfgang Wagermaier
- Max Planck Institute of Colloids and Interfaces
- Department of Biomaterials
- 14424 Potsdam
- Germany
| | - Peter Fratzl
- Max Planck Institute of Colloids and Interfaces
- Department of Biomaterials
- 14424 Potsdam
- Germany
| | - Rainer Haag
- Institute of Chemistry and Biochemistry
- Freie Universität Berlin
- 14195 Berlin
- Germany
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25
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Löwenau LJ, Zoschke C, Brodwolf R, Volz P, Hausmann C, Wattanapitayakul S, Boreham A, Alexiev U, Schäfer-Korting M. Increased permeability of reconstructed human epidermis from UVB-irradiated keratinocytes. Eur J Pharm Biopharm 2016; 116:149-154. [PMID: 28034807 DOI: 10.1016/j.ejpb.2016.12.017] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2016] [Revised: 10/25/2016] [Accepted: 12/23/2016] [Indexed: 01/08/2023]
Abstract
Extrinsic (photo) aging accelerates chronologically aging in the skin due to cumulative UV irradiation. Despite recent insights into the molecular mechanisms of fibroblast aging, age-related changes of the skin barrier function have been understudied. In contrast, the constantly increasing subpopulation of aged patients causes a clinical need for effective and safe (dermatological) treatment. Herein, we reconstructed human epidermis from UVB-irradiated keratinocytes (UVB-RHE). UVB-irradiated keratinocytes show higher activity of senescence associated β-galactosidase, less cell proliferation, and reduced viability. Higher amounts of β-galactosidase are also detectable in UVB-RHE. Moreover, UVB-RHE release more interleukin-1α and -8 into the culture medium and present altered differentiation with a thinner stratum corneum compared to normal RHE. For the first time, the permeation of testosterone and caffeine through UVB-irradiated RHE indicate a clear influence of the UVB stress on the skin barrier function. Impaired barrier function was confirmed by the increased permeation of testosterone and caffeine as well as by the increased penetration of dendritic core-multishell nanocarriers into the constructs. Taken together, UVB-RHE emulate hallmarks of skin aging and might contribute to an improved non-clinical development of medicinal or cosmetic products.
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Affiliation(s)
- Lilian Julia Löwenau
- Institute for Pharmacy, Freie Universität Berlin, Königin-Luise-Str. 2+4, 14195 Berlin, Germany
| | - Christian Zoschke
- Institute for Pharmacy, Freie Universität Berlin, Königin-Luise-Str. 2+4, 14195 Berlin, Germany
| | - Robert Brodwolf
- Institute of Experimental Physics, Freie Universität Berlin, Arnimallee 14, 14195 Berlin, Germany
| | - Pierre Volz
- Institute of Experimental Physics, Freie Universität Berlin, Arnimallee 14, 14195 Berlin, Germany
| | - Christian Hausmann
- Institute for Pharmacy, Freie Universität Berlin, Königin-Luise-Str. 2+4, 14195 Berlin, Germany
| | - Suvara Wattanapitayakul
- Institute for Pharmacy, Freie Universität Berlin, Königin-Luise-Str. 2+4, 14195 Berlin, Germany
| | - Alexander Boreham
- Institute of Experimental Physics, Freie Universität Berlin, Arnimallee 14, 14195 Berlin, Germany
| | - Ulrike Alexiev
- Institute of Experimental Physics, Freie Universität Berlin, Arnimallee 14, 14195 Berlin, Germany
| | - Monika Schäfer-Korting
- Institute for Pharmacy, Freie Universität Berlin, Königin-Luise-Str. 2+4, 14195 Berlin, Germany.
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26
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Boreham A, Brodwolf R, Walker K, Haag R, Alexiev U. Time-Resolved Fluorescence Spectroscopy and Fluorescence Lifetime Imaging Microscopy for Characterization of Dendritic Polymer Nanoparticles and Applications in Nanomedicine. Molecules 2016; 22:molecules22010017. [PMID: 28029135 PMCID: PMC6155873 DOI: 10.3390/molecules22010017] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2016] [Revised: 12/16/2016] [Accepted: 12/16/2016] [Indexed: 12/11/2022] Open
Abstract
The emerging field of nanomedicine provides new approaches for the diagnosis and treatment of diseases, for symptom relief and for monitoring of disease progression. One route of realizing this approach is through carefully constructed nanoparticles. Due to the small size inherent to the nanoparticles a proper characterization is not trivial. This review highlights the application of time-resolved fluorescence spectroscopy and fluorescence lifetime imaging microscopy (FLIM) for the analysis of nanoparticles, covering aspects ranging from molecular properties to particle detection in tissue samples. The latter technique is particularly important as FLIM allows for distinguishing of target molecules from the autofluorescent background and, due to the environmental sensitivity of the fluorescence lifetime, also offers insights into the local environment of the nanoparticle or its interactions with other biomolecules. Thus, these techniques offer highly suitable tools in the fields of particle development, such as organic chemistry, and in the fields of particle application, such as in experimental dermatology or pharmaceutical research.
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Affiliation(s)
- Alexander Boreham
- Institut für Experimentalphysik, Freie Universität Berlin, Arnimallee 14, 14195 Berlin, Germany.
| | - Robert Brodwolf
- Institut für Experimentalphysik, Freie Universität Berlin, Arnimallee 14, 14195 Berlin, Germany.
- Helmholtz Virtual Institute-Multifunctional Biomaterials for Medicine, Helmholtz-Zentrum Geesthacht, Kantstr. 55, 14513 Teltow, Germany.
| | - Karolina Walker
- Institut für Chemie und Biochemie, Freie Universität Berlin, Takustrasse 3, 14195 Berlin, Germany.
| | - Rainer Haag
- Institut für Chemie und Biochemie, Freie Universität Berlin, Takustrasse 3, 14195 Berlin, Germany.
- Helmholtz Virtual Institute-Multifunctional Biomaterials for Medicine, Helmholtz-Zentrum Geesthacht, Kantstr. 55, 14513 Teltow, Germany.
| | - Ulrike Alexiev
- Institut für Experimentalphysik, Freie Universität Berlin, Arnimallee 14, 14195 Berlin, Germany.
- Helmholtz Virtual Institute-Multifunctional Biomaterials for Medicine, Helmholtz-Zentrum Geesthacht, Kantstr. 55, 14513 Teltow, Germany.
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27
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Vogt A, Wischke C, Neffe AT, Ma N, Alexiev U, Lendlein A. Nanocarriers for drug delivery into and through the skin — Do existing technologies match clinical challenges? J Control Release 2016; 242:3-15. [DOI: 10.1016/j.jconrel.2016.07.027] [Citation(s) in RCA: 99] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2016] [Revised: 07/13/2016] [Accepted: 07/17/2016] [Indexed: 12/31/2022]
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28
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Zhang N, Said A, Wischke C, Kral V, Brodwolf R, Volz P, Boreham A, Gerecke C, Li W, Neffe AT, Kleuser B, Alexiev U, Lendlein A, Schäfer-Korting M. Poly[acrylonitrile-co-(N-vinyl pyrrolidone)] nanoparticles - Composition-dependent skin penetration enhancement of a dye probe and biocompatibility. Eur J Pharm Biopharm 2016; 116:66-75. [PMID: 27989766 DOI: 10.1016/j.ejpb.2016.10.019] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2016] [Revised: 10/20/2016] [Accepted: 10/23/2016] [Indexed: 12/18/2022]
Abstract
Nanoparticles can improve topical drug delivery: size, surface properties and flexibility of polymer nanoparticles are defining its interaction with the skin. Only few studies have explored skin penetration for one series of structurally related polymer particles with systematic alteration of material composition. Here, a series of rigid poly[acrylonitrile-co-(N-vinyl pyrrolidone)] model nanoparticles stably loaded with Nile Red or Rhodamin B, respectively, was comprehensively studied for biocompatibility and functionality. Surface properties were altered by varying the molar content of hydrophilic NVP from 0 to 24.1% and particle size ranged from 35 to 244nm. Whereas irritancy and genotoxicity were not revealed, lipophilic and hydrophilic nanoparticles taken up by keratinocytes affected cell viability. Skin absorption of the particles into viable skin ex vivo was studied using Nile Red as fluorescent probe. Whilst an intact stratum corneum efficiently prevented penetration, almost complete removal of the horny layer allowed nanoparticles of smaller size and hydrophilic particles to penetrate into viable epidermis and dermis. Hence, systematic variations of nanoparticle properties allows gaining insights into critical criteria for biocompatibility and functionality of novel nanocarriers for topical drug delivery and risks associated with environmental exposure.
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Affiliation(s)
- Nan Zhang
- Institute of Pharmacy, Freie Universität Berlin, Berlin, Germany
| | - André Said
- Institute of Pharmacy, Freie Universität Berlin, Berlin, Germany
| | - Christian Wischke
- Institute of Biomaterial Science and Berlin-Brandenburg Center for Regenerative Therapies, Helmholtz-Zentrum Geesthacht, Teltow, Germany; Helmholtz Virtual Institute Multifunctional Biomaterials for Medicine, Helmholtz-Zentrum Geesthacht, Teltow, Germany
| | - Vivian Kral
- Institute of Pharmacy, Freie Universität Berlin, Berlin, Germany
| | - Robert Brodwolf
- Helmholtz Virtual Institute Multifunctional Biomaterials for Medicine, Helmholtz-Zentrum Geesthacht, Teltow, Germany; Institute of Physics, Freie Universität Berlin, Berlin, Germany
| | - Pierre Volz
- Institute of Physics, Freie Universität Berlin, Berlin, Germany
| | | | | | - Wenzhong Li
- Institute of Biomaterial Science and Berlin-Brandenburg Center for Regenerative Therapies, Helmholtz-Zentrum Geesthacht, Teltow, Germany
| | - Axel T Neffe
- Institute of Biomaterial Science and Berlin-Brandenburg Center for Regenerative Therapies, Helmholtz-Zentrum Geesthacht, Teltow, Germany; Helmholtz Virtual Institute Multifunctional Biomaterials for Medicine, Helmholtz-Zentrum Geesthacht, Teltow, Germany
| | - Burkhard Kleuser
- Institute of Nutritional Science, University of Potsdam, Germany
| | - Ulrike Alexiev
- Helmholtz Virtual Institute Multifunctional Biomaterials for Medicine, Helmholtz-Zentrum Geesthacht, Teltow, Germany; Institute of Physics, Freie Universität Berlin, Berlin, Germany
| | - Andreas Lendlein
- Institute of Biomaterial Science and Berlin-Brandenburg Center for Regenerative Therapies, Helmholtz-Zentrum Geesthacht, Teltow, Germany; Helmholtz Virtual Institute Multifunctional Biomaterials for Medicine, Helmholtz-Zentrum Geesthacht, Teltow, Germany
| | - Monika Schäfer-Korting
- Institute of Pharmacy, Freie Universität Berlin, Berlin, Germany; Helmholtz Virtual Institute Multifunctional Biomaterials for Medicine, Helmholtz-Zentrum Geesthacht, Teltow, Germany.
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29
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Liakos IL, Grumezescu AM, Holban AM, Florin I, D'Autilia F, Carzino R, Bianchini P, Athanassiou A. Polylactic Acid-Lemongrass Essential Oil Nanocapsules with Antimicrobial Properties. Pharmaceuticals (Basel) 2016; 9:E42. [PMID: 27399724 PMCID: PMC5039495 DOI: 10.3390/ph9030042] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2016] [Revised: 06/27/2016] [Accepted: 07/01/2016] [Indexed: 01/31/2023] Open
Abstract
Polylactic acid was combined with lemongrass essential oil (EO) to produce functional nanocapsules (NCs). The obtained polylactic acid nanoparticles showed antimicrobial activity both with and without the presence of lemongrass oil; however, the presence of EO improved the activity of the NCs. The presence of lemongrass assisted the formation of well-separated NCs and also provided enhanced antimicrobial properties, since lemongrass is known for its antimicrobial character. Fluorescence microscopy was used to optically observe the nanoparticles and NCs and revealed the attachment of lemongrass oil with the polylactic acid NCs. Dynamic light scattering was used to determine their size. UV absorption was used to determine the exact amount of lemongrass oil found in the polylactic acid-lemongrass oil NCs, which was important for understanding the minimum inhibitory concentration for the antimicrobial experiments. A series of clinically important microbial species were used in the study and the obtained NCs proved to have very good antimicrobial properties against all tested strains. Such NCs can be used for the design of ecological strategies, based on natural alternatives, which may be efficient against severe infections, including those that involve resistant pathogens and biofilms or those with difficult to reach localization.
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Affiliation(s)
- Ioannis L Liakos
- Smart Materials Group, Nanophysics Department, Istituto Italiano di Tecnologia (IIT), Via Morego 30, Genoa 16163, Italy.
| | - Alexandru Mihai Grumezescu
- Department of Science and Engineering of Oxide Materials and Nanomaterials, Faculty of Applied Chemistry and Materials Science, University Politehnica of Bucharest, Polizu Street No. 1-7, Bucharest 011061, Romania.
| | - Alina Maria Holban
- Department of Science and Engineering of Oxide Materials and Nanomaterials, Faculty of Applied Chemistry and Materials Science, University Politehnica of Bucharest, Polizu Street No. 1-7, Bucharest 011061, Romania.
- Department of Microbiology and Immunology, Faculty of Biology, University of Bucharest, Aleea Portocalelor, No. 1-3, Bucharest 060101, Romania.
| | - Iordache Florin
- Nicolae Simionescu Institute of Cellular Biology and Pathology, Bucharest, Romania.
| | - Francesca D'Autilia
- Nanobiophotonics, Nanophysics Department, Istituto Italiano di Tecnologia (IIT), Via Morego 30, Genoa 16163, Italy.
| | - Riccardo Carzino
- Smart Materials Group, Nanophysics Department, Istituto Italiano di Tecnologia (IIT), Via Morego 30, Genoa 16163, Italy.
| | - Paolo Bianchini
- Nanobiophotonics, Nanophysics Department, Istituto Italiano di Tecnologia (IIT), Via Morego 30, Genoa 16163, Italy.
| | - Athanassia Athanassiou
- Smart Materials Group, Nanophysics Department, Istituto Italiano di Tecnologia (IIT), Via Morego 30, Genoa 16163, Italy.
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