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Leite MN, Viegas JSR, Praça FSG, de Paula NA, Ramalho LNZ, Bentley MVLB, Frade MAC. Ex vivo model of human skin (hOSEC) for assessing the dermatokinetics of the anti-melanoma drug Dacarbazine. Eur J Pharm Sci 2021; 160:105769. [PMID: 33610737 DOI: 10.1016/j.ejps.2021.105769] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2020] [Revised: 02/05/2021] [Accepted: 02/15/2021] [Indexed: 12/20/2022]
Abstract
Alternative models to replace animals in experimental studies remain a challenge in testing the effectiveness of dermatologic and cosmetic drugs. We proposed a model of human organotypic skin explant culture (hOSEC) to assess the profile of cutaneous drug skin distribution, adopting dacarbazine as a model, and respective new methodologies for dermatokinetic analysis. The viability tests were evaluated in primary keratinocytes and fibroblasts, and skin by MTT and TTC assays, respectively. Then, dacarbazine was applied to the culture medium, and the hOSEC method was applied to verify the dynamics of skin distribution of dacarbazine and determine its dermatokinetic profile. The results of cell and tissue viability showed that both were considered viable. The dermatokinetic results indicated that dacarbazine can be absorbed through the skin, reaching a concentration of 36.36 µg/mL (18,18%) of the initial dose (200 µg/mL) after 12 h in culture. Histological data showed that the skin maintained its structure throughout the tested time that the hOSEC method was applied. No apoptotic cells were observed in the epidermal and dermal layers. No visible changes in the dermo-epidermal junction and no inflammatory processes with the recruitment of defense cells were observed. Hence, these findings suggest that the hOSEC concept as an alternative ex vivo model for assessing the dynamics of skin distribution of drugs, such as dacarbazine, and determining their respective dermatokinetic profiles.
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Affiliation(s)
- Marcel Nani Leite
- Division of Dermatology - Wound Healing & Hansen's Disease Lab, Department of Internal Medicine, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil.
| | - Juliana Santos Rosa Viegas
- School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Ribeirão Preto, São Paulo, Brazil.
| | - Fabíola Silva Garcia Praça
- School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Ribeirão Preto, São Paulo, Brazil.
| | - Natália Aparecida de Paula
- Division of Dermatology - Wound Healing & Hansen's Disease Lab, Department of Internal Medicine, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil.
| | - Leandra Náira Zambelli Ramalho
- Department of Pathology and Legal Medicine, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil.
| | | | - Marco Andrey Cipriani Frade
- Division of Dermatology - Wound Healing & Hansen's Disease Lab, Department of Internal Medicine, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil.
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2
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Gorzelanny C, Mess C, Schneider SW, Huck V, Brandner JM. Skin Barriers in Dermal Drug Delivery: Which Barriers Have to Be Overcome and How Can We Measure Them? Pharmaceutics 2020; 12:E684. [PMID: 32698388 PMCID: PMC7407329 DOI: 10.3390/pharmaceutics12070684] [Citation(s) in RCA: 74] [Impact Index Per Article: 18.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2020] [Revised: 07/11/2020] [Accepted: 07/14/2020] [Indexed: 12/13/2022] Open
Abstract
Although, drugs are required in the various skin compartments such as viable epidermis, dermis, or hair follicles, to efficiently treat skin diseases, drug delivery into and across the skin is still challenging. An improved understanding of skin barrier physiology is mandatory to optimize drug penetration and permeation. The various barriers of the skin have to be known in detail, which means methods are needed to measure their functionality and outside-in or inside-out passage of molecules through the various barriers. In this review, we summarize our current knowledge about mechanical barriers, i.e., stratum corneum and tight junctions, in interfollicular epidermis, hair follicles and glands. Furthermore, we discuss the barrier properties of the basement membrane and dermal blood vessels. Barrier alterations found in skin of patients with atopic dermatitis are described. Finally, we critically compare the up-to-date applicability of several physical, biochemical and microscopic methods such as transepidermal water loss, impedance spectroscopy, Raman spectroscopy, immunohistochemical stainings, optical coherence microscopy and multiphoton microscopy to distinctly address the different barriers and to measure permeation through these barriers in vitro and in vivo.
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Affiliation(s)
| | | | | | | | - Johanna M. Brandner
- Department of Dermatology and Venerology, Center for Internal Medicine, University Medical Center Hamburg-Eppendorf, 20246 Hamburg, Germany; (C.G.); (C.M.); (S.W.S.); (V.H.)
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3
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Hausmann C, Vogt A, Kerscher M, Ghoreschi K, Schäfer-Korting M, Zoschke C. Optimizing skin pharmacotherapy for older patients: the future is at hand but are we ready for it? Drug Discov Today 2020; 25:851-861. [PMID: 31987937 DOI: 10.1016/j.drudis.2020.01.011] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2019] [Revised: 01/04/2020] [Accepted: 01/16/2020] [Indexed: 02/06/2023]
Abstract
Age-related changes affect both the local pharmacotherapy of skin diseases and the transdermal administration of drugs. The development of aged skin models disregards the highly individual process of aging, facilitating general conclusions for older patients. Nevertheless, 'omics technology, high-content screening, and non-invasive imaging, as well as bioprinting, CRISPR-Cas, and, patients-on-a-chip, can retrieve personalized information for the generation of in vitro models. Herein, we suggest a strategy to optimize pharmacotherapy for older patients. The technology for relevant human cell-based models is at hand and the consideration of patient heterogeneity is required to unlock their full potential.
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Affiliation(s)
- Christian Hausmann
- Freie Universität Berlin, Institute of Pharmacy (Pharmacology & Toxicology), Königin-Luise-Strasse 2+4, 14195 Berlin, Germany
| | - Annika Vogt
- Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Department of Dermatology, Venereology and Allergology, Charitéplatz 1, 10117 Berlin, Germany
| | - Martina Kerscher
- Universität Hamburg, Division of Biochemistry and Molecular Biology, Papendamm 21, 20146 Hamburg, Germany
| | - Kamran Ghoreschi
- Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Department of Dermatology, Venereology and Allergology, Charitéplatz 1, 10117 Berlin, Germany
| | - Monika Schäfer-Korting
- Freie Universität Berlin, Institute of Pharmacy (Pharmacology & Toxicology), Königin-Luise-Strasse 2+4, 14195 Berlin, Germany
| | - Christian Zoschke
- Freie Universität Berlin, Institute of Pharmacy (Pharmacology & Toxicology), Königin-Luise-Strasse 2+4, 14195 Berlin, Germany.
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4
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Damiani G, Eggenhöffner R, Pigatto PDM, Bragazzi NL. Nanotechnology meets atopic dermatitis: Current solutions, challenges and future prospects. Insights and implications from a systematic review of the literature. Bioact Mater 2019; 4:380-386. [PMID: 31872162 PMCID: PMC6909150 DOI: 10.1016/j.bioactmat.2019.11.003] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2019] [Revised: 11/25/2019] [Accepted: 11/26/2019] [Indexed: 12/19/2022] Open
Abstract
Atopic dermatitis is a chronic, relapsing, non-contiguous, exudative eczema/dermatitis, which represents a complex, multi-factorial disorder, due to an impairment of the stratum corneum barrier. Currently available drugs have a low skin bioavailability and may give rise to severe adverse events. Nanotechnologies, including nano-particles, liposomes, nano-gels, nano-mixtures, nano-emulsions and other nano-carriers, offer unprecedented solutions to these issues, enabling: i) the management of different clinical forms of atopic dermatitis, especially the recalcitrant ones, i) a better bio-availability and trans-dermal drug targeted delivery at the inflammation site, ii) dose control, iii) significant improvements both in clinical symptoms and immune responses, iv) with less adverse events being reported and a better safety profile. However, some nano-sized structures could amplify and even worsen symptoms in particularly susceptible individuals. Furthermore, most studies included in the present systematic review have been conducted in-vitro or in-vivo, with few randomized controlled clinical trials (RCTs). Future investigations should adopt this design in order to enable scholars achieving robust findings and evidence. Therefore, given the above-mentioned shortcomings, further research in the field is urgently warranted. Atopic dermatitis is a chronic, relapsing eczema/dermatitis, due to an impairment of the stratum corneum barrier. Currently available drugs have a low skin bioavailability and may give rise to severe adverse events. Nanotechnologies offer unprecedented solutions, enabling the management of different clinical forms of atopic dermatitis.
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Affiliation(s)
- Giovanni Damiani
- Clinical Dermatology, IRCCS Istituto Ortopedico Galeazzi, Milan, Italy
- Department of Biomedical, Surgical and Dental Sciences, University of Milan, Milan, Italy
- Department of Dermatology, Case Western Reserve University, Cleveland, OH, USA
- Young Dermatologists Italian Network, Centro Studi GISED, Bergamo, Italy
| | - Roberto Eggenhöffner
- Department of Surgical Sciences and Integrated Diagnostics, University of Genoa, Genoa, Italy
| | - Paolo Daniele Maria Pigatto
- Clinical Dermatology, IRCCS Istituto Ortopedico Galeazzi, Milan, Italy
- Department of Biomedical, Surgical and Dental Sciences, University of Milan, Milan, Italy
| | - Nicola Luigi Bragazzi
- Department of Surgical Sciences and Integrated Diagnostics, University of Genoa, Genoa, Italy
- Postgraduate School of Public Health, Department of Health Sciences, University of Genoa, Genoa, Italy
- Laboratory for Industrial and Applied Mathematics (LIAM), Department of Mathematics and Statistics, York University, Toronto, Ontario, Canada
- Department of Neuroscience, Rehabilitation, Ophthalmology, Genetics and Maternal/Child Sciences (DINOGMI), University of Genoa, Genoa, Italy
- Corresponding author. Laboratory for Industrial and Applied Mathematics (LIAM), Department of Mathematics and Statistics, York University, Toronto, Ontario, Canada.
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Souto EB, Dias-Ferreira J, Oliveira J, Sanchez-Lopez E, Lopez-Machado A, Espina M, Garcia ML, Souto SB, Martins-Gomes C, Silva AM. Trends in Atopic Dermatitis-From Standard Pharmacotherapy to Novel Drug Delivery Systems. Int J Mol Sci 2019; 20:ijms20225659. [PMID: 31726723 PMCID: PMC6888057 DOI: 10.3390/ijms20225659] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2019] [Revised: 11/06/2019] [Accepted: 11/11/2019] [Indexed: 02/06/2023] Open
Abstract
Atopic dermatitis (AD) is a predominant and deteriorating chronic inflammation of the skin, categorized by robust burning and eczematous lacerations in diverse portions of the body. AD affects about 20% of both offspring and adults worldwide. The pathophysiology of AD combines environmental, hereditary, and immunological aspects, together with skin barrier dysfunction. The procedures used to prevent the disease are the everyday usage of creams to support the restoration of the epidermal barrier. The classical treatments include the use of topical corticosteroids as a first-line therapy, but also calcineurin inhibitors, antihistamines, antibiotics, phototherapy, and also immunosuppressant drugs in severe cases of AD. Topical drug delivery to deeper skin layers is a difficult task due to the skin anatomic barrier, which limits deeper penetration of drugs. Groundbreaking drug delivery systems, based on nanoparticles (NPs), have received much attention due to their ability to improve solubility, bioavailability, diffusion, targeting to specific types of cells, and limiting the secondary effects of the drugs employed in the treatment of AD. Even so, additional studies are still required to recognize the toxicological characteristics and long-term safety of NPs. This review discusses the current classical pharmacotherapy of AD against new nanoparticle skin delivery systems and their toxicologic risks.
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Affiliation(s)
- Eliana B. Souto
- Department of Pharmaceutical Technology, Faculty of Pharmacy, University of Coimbra (FFUC), Pólo das Ciências da Saúde, 3000-548 Coimbra, Portugal; (J.D.-F.); (J.O.); (E.S.-L.); (A.L.-M.)
- CEB—Centre of Biological Engineering, University of Minho, Campus de Gualtar 4710-057 Braga, Portugal
- Correspondence: ; Tel.: +351-239-488-400
| | - João Dias-Ferreira
- Department of Pharmaceutical Technology, Faculty of Pharmacy, University of Coimbra (FFUC), Pólo das Ciências da Saúde, 3000-548 Coimbra, Portugal; (J.D.-F.); (J.O.); (E.S.-L.); (A.L.-M.)
| | - Jéssica Oliveira
- Department of Pharmaceutical Technology, Faculty of Pharmacy, University of Coimbra (FFUC), Pólo das Ciências da Saúde, 3000-548 Coimbra, Portugal; (J.D.-F.); (J.O.); (E.S.-L.); (A.L.-M.)
| | - Elena Sanchez-Lopez
- Department of Pharmaceutical Technology, Faculty of Pharmacy, University of Coimbra (FFUC), Pólo das Ciências da Saúde, 3000-548 Coimbra, Portugal; (J.D.-F.); (J.O.); (E.S.-L.); (A.L.-M.)
- Department of Pharmacy and Pharmaceutical Technology and Physical Chemistry, Faculty of Pharmacy, University of Barcelona, Ave. Joan XXIII, 08028 Barcelona, Spain; (M.E.); (M.L.G.)
- Institute of Nanoscience and Nanotechnology (IN2UB), University of Barcelona, Barcelona 08028, Spain
| | - Ana Lopez-Machado
- Department of Pharmaceutical Technology, Faculty of Pharmacy, University of Coimbra (FFUC), Pólo das Ciências da Saúde, 3000-548 Coimbra, Portugal; (J.D.-F.); (J.O.); (E.S.-L.); (A.L.-M.)
- Department of Pharmacy and Pharmaceutical Technology and Physical Chemistry, Faculty of Pharmacy, University of Barcelona, Ave. Joan XXIII, 08028 Barcelona, Spain; (M.E.); (M.L.G.)
- Institute of Nanoscience and Nanotechnology (IN2UB), University of Barcelona, Barcelona 08028, Spain
| | - Marta Espina
- Department of Pharmacy and Pharmaceutical Technology and Physical Chemistry, Faculty of Pharmacy, University of Barcelona, Ave. Joan XXIII, 08028 Barcelona, Spain; (M.E.); (M.L.G.)
- Institute of Nanoscience and Nanotechnology (IN2UB), University of Barcelona, Barcelona 08028, Spain
| | - Maria L. Garcia
- Department of Pharmacy and Pharmaceutical Technology and Physical Chemistry, Faculty of Pharmacy, University of Barcelona, Ave. Joan XXIII, 08028 Barcelona, Spain; (M.E.); (M.L.G.)
- Institute of Nanoscience and Nanotechnology (IN2UB), University of Barcelona, Barcelona 08028, Spain
| | - Selma B. Souto
- Department of Endocrinology, Hospital de São João, Alameda Prof. Hernâni Monteiro, 4200-319 Porto, Portugal;
| | - Carlos Martins-Gomes
- Centre for Research and Technology of Agro-Environmental and Biological Sciences (CITAB), University of Trás-os-Montes e Alto Douro (UTAD), Quinta de Prados, 5001-801 Vila Real, Portugal; (C.M.-G.); (A.M.S.)
- Department of Biology and Environment, University of Trás-os-Montes e Alto Douro (UTAD), Quinta de Prados, 5001-801 Vila Real, Portugal
| | - Amélia M. Silva
- Centre for Research and Technology of Agro-Environmental and Biological Sciences (CITAB), University of Trás-os-Montes e Alto Douro (UTAD), Quinta de Prados, 5001-801 Vila Real, Portugal; (C.M.-G.); (A.M.S.)
- Department of Biology and Environment, University of Trás-os-Montes e Alto Douro (UTAD), Quinta de Prados, 5001-801 Vila Real, Portugal
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6
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Wanjiku B, Yamamoto K, Klossek A, Schumacher F, Pischon H, Mundhenk L, Rancan F, Judd MM, Ahmed M, Zoschke C, Kleuser B, Rühl E, Schäfer-Korting M. Qualifying X-ray and Stimulated Raman Spectromicroscopy for Mapping Cutaneous Drug Penetration. Anal Chem 2019; 91:7208-7214. [PMID: 31090401 DOI: 10.1021/acs.analchem.9b00519] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Research on topical drug delivery relies on reconstructed human skin (RHS) in addition to ex vivo human and animal skin, each with specific physiological features. Here, we compared the penetration of dexamethasone from an ethanolic hydroxyethyl cellulose gel into ex vivo human skin, murine skin, and RHS. For comprehensive insights into skin morphology and penetration enhancing mechanisms, scanning transmission X-ray microscopy (STXM), liquid chromatography tandem-mass spectrometry (LC-MS/MS), and stimulated Raman spectromicroscopy (SRS) were combined. STXM offers high spatial resolution with label-free drug detection and is therefore sensitive to tissue damage. Despite differences in sample preparation and data analysis, the amounts of dexamethasone in RHS, detected and quantified by STXM and LC-MS/MS, were very similar and increased during the first 100 min of exposure. SRS revealed interactions between the gel and the stratum corneum or, more specifically, its protein and lipid structures. Similar to both types of ex vivo skin, higher protein-to-lipid ratios within the stratum corneum of RHS indicated reduced lipid amounts after 30 min of ethanol exposure. Extended ethanol exposure led to a continued reduction of lipids in the ex vivo matrixes, while protein integrity appeared to be compromised in RHS, which led to declining protein signals. In conclusion, LC-MS/MS proved the predictive capability of STXM for label-free drug detection. Combining STXM with SRS precisely dissected the penetration enhancing effects of ethanol. Further studies on topical drug delivery should consider the potential of these complementary techniques.
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Affiliation(s)
- Barbara Wanjiku
- Institute of Pharmacy (Pharmacology and Toxicology) , Freie Universität Berlin , Königin-Luise-Strasse 2 + 4 , 14195 Berlin , Germany
| | - Kenji Yamamoto
- Institute of Chemistry and Biochemistry (Physical Chemistry) , Freie Universität Berlin , Arnimallee 22 , 14195 Berlin , Germany
| | - André Klossek
- Institute of Chemistry and Biochemistry (Physical Chemistry) , Freie Universität Berlin , Arnimallee 22 , 14195 Berlin , Germany
| | - Fabian Schumacher
- Institute of Nutritional Science , University of Potsdam , Arthur-Scheunert-Allee 114-6 , 14558 Nuthetal , Germany.,Department of Molecular Biology , University of Duisburg-Essen , Hufelandstrasse 55 , 45147 Essen , Germany
| | - Hannah Pischon
- Institute of Veterinary Pathology , Freie Universität Berlin , Robert-von-Ostertag-Strasse 15 , 14163 Berlin , Germany
| | - Lars Mundhenk
- Institute of Veterinary Pathology , Freie Universität Berlin , Robert-von-Ostertag-Strasse 15 , 14163 Berlin , Germany
| | - Fiorenza Rancan
- Department of Dermatology and Allergy, Clinical Research Center for Hair and Skin Science , Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin , Charitéplatz 1 , 10117 Berlin , Germany
| | - Martyna M Judd
- Institute of Chemistry and Biochemistry (Physical Chemistry) , Freie Universität Berlin , Arnimallee 22 , 14195 Berlin , Germany
| | - Muniruddin Ahmed
- Institute of Pharmacy (Pharmacology and Toxicology) , Freie Universität Berlin , Königin-Luise-Strasse 2 + 4 , 14195 Berlin , Germany.,Department of Clinical Pharmacy and Pharmacology , University of Dhaka , Dhaka 1000 , Bangladesh
| | - Christian Zoschke
- Institute of Pharmacy (Pharmacology and Toxicology) , Freie Universität Berlin , Königin-Luise-Strasse 2 + 4 , 14195 Berlin , Germany
| | - Burkhard Kleuser
- Institute of Nutritional Science , University of Potsdam , Arthur-Scheunert-Allee 114-6 , 14558 Nuthetal , Germany
| | - Eckart Rühl
- Institute of Chemistry and Biochemistry (Physical Chemistry) , Freie Universität Berlin , Arnimallee 22 , 14195 Berlin , Germany
| | - Monika Schäfer-Korting
- Institute of Pharmacy (Pharmacology and Toxicology) , Freie Universität Berlin , Königin-Luise-Strasse 2 + 4 , 14195 Berlin , Germany
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7
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Novel Lipidized Derivatives of the Bioflavonoid Hesperidin: Dermatological, Cosmetic and Chemopreventive Applications. COSMETICS 2018. [DOI: 10.3390/cosmetics5040072] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Hesperidin is one of the most important natural flavonoids, known for its antioxidant, anti-inflammatory, anti-mutagenic, and anti-hypertensive properties. Despite its various biological activities, hesperidin is rarely used in the dermo-cosmetic field because of its poor solubility in both water and oil phases that makes difficult formulation, distribution and bioavailability through the skin layers. Moreover, hesperidin is still underestimated in skin care products, and literature data on its stability into a topical formulation are not yet available. In this paper we report the synthesis of five different derivatives of hesperidin and their evaluation in terms of antioxidant, antifungal, antiproliferative, and apoptotic effects on human leukemic K562 cells. Preliminary antiproliferative effects were considered since hyper-proliferation is involved in several cutaneous problems particularly in the case of photo-exposition and environmental pollution. Esp4 and Esp5 were found to be more active in inhibiting K562 cell growth than parent hesperidin. Esp3 exhibited different biological properties, i.e., antioxidant activity in the absence of antiproliferative effects.
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8
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Exploring preclinical and clinical effectiveness of nanoformulations in the treatment of atopic dermatitis: Safety aspects and patent reviews. ACTA ACUST UNITED AC 2017. [DOI: 10.1016/j.bfopcu.2016.12.003] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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9
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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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10
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Hönzke S, Gerecke C, Elpelt A, Zhang N, Unbehauen M, Kral V, Fleige E, Paulus F, Haag R, Schäfer-Korting M, Kleuser B, Hedtrich S. Tailored dendritic core-multishell nanocarriers for efficient dermal drug delivery: A systematic top-down approach from synthesis to preclinical testing. J Control Release 2016; 242:50-63. [PMID: 27349353 DOI: 10.1016/j.jconrel.2016.06.030] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2016] [Revised: 06/16/2016] [Accepted: 06/22/2016] [Indexed: 12/12/2022]
Abstract
Drug loaded dendritic core-multishell (CMS) nanocarriers are of especial interest for the treatment of skin diseases, owing to their striking dermal delivery efficiencies following topical applications. CMS nanocarriers are composed of a polyglycerol core, connected by amide-bonds to an inner alkyl shell and an outer methoxy poly(ethylene glycol) shell. Since topically applied nanocarriers are subjected to biodegradation, the application of conventional amide-based CMS nanocarriers (10-A-18-350) has been limited by the potential production of toxic polyglycerol amines. To circumvent this issue, three tailored ester-based CMS nanocarriers (10-E-12-350, 10-E-15-350, 10-E-18-350) of varying inner alkyl chain length were synthesized and comprehensively characterized in terms of particle size, drug loading, biodegradation and dermal drug delivery efficiency. Dexamethasone (DXM), a potent drug widely used for the treatment of inflammatory skin diseases, was chosen as a therapeutically relevant test compound for the present study. Ester- and amide-based CMS nanocarriers delivered DXM more efficiently into human skin than a commercially available DXM cream. Subsequent in vitro and in vivo toxicity studies identified CMS (10-E-15-350) as the most biocompatible carrier system. The anti-inflammatory potency of DXM-loaded CMS (10-E-15-350) nanocarriers was assessed in TNFα supplemented skin models, where a significant reduction of the pro-inflammatory cytokine IL-8 was seen, with markedly greater efficacy than commercial DXM cream. In summary, we report the rational design and characterization of tailored, biodegradable, ester-based CMS nanocarriers, and their subsequent stepwise screening for biocompatibility, dermal delivery efficiency and therapeutic efficacy in a top-down approach yielding the best carrier system for topical applications.
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Affiliation(s)
- Stefan Hönzke
- Institute for Pharmacy, Pharmacology and Toxicology, Freie Universität Berlin, Germany
| | - Christian Gerecke
- Institute of Nutritional Science, Department of Toxicology, University of Potsdam, Germany
| | - Anja Elpelt
- Institute for Pharmacy, Pharmacology and Toxicology, Freie Universität Berlin, Germany
| | - Nan Zhang
- Institute for Pharmacy, Pharmacology and Toxicology, Freie Universität Berlin, Germany
| | - Michael Unbehauen
- Institute of Chemistry and Biochemistry, Freie Universität Berlin, Germany
| | - Vivian Kral
- Institute for Pharmacy, Pharmacology and Toxicology, Freie Universität Berlin, Germany
| | | | - Florian Paulus
- Institute of Chemistry and Biochemistry, Freie Universität Berlin, Germany
| | - Rainer Haag
- Institute of Chemistry and Biochemistry, Freie Universität Berlin, Germany
| | | | - Burkhard Kleuser
- Institute of Nutritional Science, Department of Toxicology, University of Potsdam, Germany
| | - Sarah Hedtrich
- Institute for Pharmacy, Pharmacology and Toxicology, Freie Universität Berlin, Germany.
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Zoschke C, Ulrich M, Sochorová M, Wolff C, Vávrová K, Ma N, Ulrich C, Brandner JM, Schäfer-Korting M. The barrier function of organotypic non-melanoma skin cancer models. J Control Release 2016; 233:10-8. [PMID: 27130695 DOI: 10.1016/j.jconrel.2016.04.037] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2016] [Revised: 04/20/2016] [Accepted: 04/25/2016] [Indexed: 01/08/2023]
Abstract
Non-melanoma skin cancer (NMSC) is the most frequent human cancer with continuously rising incidences worldwide. Herein, we investigated the molecular basis for the impaired skin barrier function of organotypic NMSC models. We unraveled disturbed epidermal differentiation by reflectance confocal microscopy and histopathological evaluation. While the presence of claudin-4 and occludin were distinctly reduced, zonula occludens protein-1 was more wide-spread, and claudin-1 was heterogeneously distributed within the NMSC models compared with normal reconstructed human skin. Moreover, the cancer altered stratum corneum lipid packing and profile with decreased cholesterol content, increased phospholipid amount, and altered ceramide subclasses. These alterations contributed to increased surface pH and to 1.5 to 2.6-fold enhanced caffeine permeability of the NMSC models. Three topical applications of ingenol mebutate gel (0.015%) caused abundant epidermal cell necrosis, decreased Ki-67 indices, and increased lactate dehydrogenase activity. Taken together, our study provides new biological insights into the microenvironment of organotypic NMSC models, improves the understanding of the disease model by revealing causes for impaired skin barrier function in NMSC models at the molecular level, and fosters human cell-based approaches in preclinical drug evaluation.
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Affiliation(s)
- Christian Zoschke
- Institute for Pharmacy, Freie Universität Berlin, Königin-Luise-Str. 2+4, 14195 Berlin, Germany
| | - Martina Ulrich
- Collegium Medicum Berlin, Luisenstr. 54, 10117 Berlin, Germany; Department of Dermatology, Venereology and Allergology, Skin Cancer Center Charité, Charité - Universitätsmedizin Berlin, Charitéplatz 1, 10117 Berlin, Germany
| | - Michaela Sochorová
- Faculty of Pharmacy, Charles University in Prague, Akademika Heyrovského 1203, 50005 Hradec Králové, Czech Republic
| | - Christopher Wolff
- Institute for Pharmacy, Freie Universität Berlin, Königin-Luise-Str. 2+4, 14195 Berlin, Germany
| | - Kateřina Vávrová
- Faculty of Pharmacy, Charles University in Prague, Akademika Heyrovského 1203, 50005 Hradec Králové, Czech Republic
| | - Nan Ma
- Institute of Biomaterial Science, Department of Biocompatibility, Helmholtz Centre for Materials and Coastal Research, Kantstr. 55, 14153 Teltow, Germany
| | - Claas Ulrich
- Department of Dermatology, Venereology and Allergology, Skin Cancer Center Charité, Charité - Universitätsmedizin Berlin, Charitéplatz 1, 10117 Berlin, Germany
| | - Johanna M Brandner
- Department of Dermatology and Venereology, University Hospital Hamburg-Eppendorf, Martinistr. 52, 20246 Hamburg, Germany
| | - Monika Schäfer-Korting
- Institute for Pharmacy, Freie Universität Berlin, Königin-Luise-Str. 2+4, 14195 Berlin, Germany.
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Skin penetration and dermal tolerability of acrylic nanocapsules: Influence of the surface charge and a chitosan gel used as vehicle. Int J Pharm 2016; 507:12-20. [PMID: 27130364 DOI: 10.1016/j.ijpharm.2016.03.046] [Citation(s) in RCA: 51] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2016] [Revised: 03/23/2016] [Accepted: 03/24/2016] [Indexed: 11/23/2022]
Abstract
For an improved understanding of the relevant particle features for cutaneous use, we studied the effect of the surface charge of acrylic nanocapsules (around 150nm) and the effect of a chitosan gel vehicle on the particle penetration into normal and stripped human skin ex vivo as well as local tolerability (cytotoxicity and irritancy). Rhodamin-tagged nanocapsules penetrated and remained in the stratum corneum. Penetration of cationic nanocapsules exceeded the penetration of anionic nanocapsules. When applied on stripped skin, however, the fluorescence was also recorded in the viable epidermis and dermis. Cationic surface charge and embedding the particles into chitosan gel favored access to deeper skin. Keratinocytes took up the nanocapsules rapidly. Cytotoxicity (viability<80%), following exposure for ≥24h, appears to be due to the surfactant polysorbate 80, used for nanocapsuleś stabilization. Uptake by fibroblasts was low and no cytotoxicity was observed. No irritant reactions were detected in the HET-CAM test. In conclusion, the surface charge and chitosan vehicle, as well as the skin barrier integrity, influence the skin penetration of acrylic nanocapsules. Particle localization in the intact stratum corneum of normal skin and good tolerability make the nanocapsules candidates for topical use on the skin, provided that the polymer wall allows the release of the active encapsulated substance.
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Killing of Staphylococcus aureus via Magnetic Hyperthermia Mediated by Magnetotactic Bacteria. Appl Environ Microbiol 2016; 82:2219-26. [PMID: 26873320 DOI: 10.1128/aem.04103-15] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2015] [Accepted: 01/24/2016] [Indexed: 11/20/2022] Open
Abstract
Staphylococcus aureus is a common hospital and household pathogen. Given the emergence of antibiotic-resistant derivatives of this pathogen resulting from the use of antibiotics as general treatment, development of alternative therapeutic strategies is urgently needed. Here, we assess the feasibility of killing S. aureus cells in vitro and in vivo through magnetic hyperthermia mediated by magnetotactic bacteria that possess magnetic nanocrystals and demonstrate magnetically steered swimming. The S. aureus suspension was added to magnetotactic MO-1 bacteria either directly or after coating with anti-MO-1 polyclonal antibodies. The suspensions were then subjected to an alternating magnetic field (AMF) for 1 h. S. aureus viability was subsequently assessed through conventional plate counting and flow cytometry. We found that approximately 30% of the S. aureus cells mixed with uncoated MO-1 cells were killed after AMF treatment. Moreover, attachment between the magnetotactic bacteria and S. aureus increased the killing efficiency of hyperthermia to more than 50%. Using mouse models, we demonstrated that magnetic hyperthermia mediated by antibody-coated magnetotactic MO-1 bacteria significantly improved wound healing. These results collectively demonstrated the effective eradication of S. aureus both in vitro and in vivo, indicating the potential of magnetotactic bacterium-mediated magnetic hyperthermia as a treatment for S. aureus-induced skin or wound infections.
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[Experimental models of human skin aging]. Hautarzt 2016; 67:93-8. [PMID: 26743051 DOI: 10.1007/s00105-015-3747-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
The skin is a representative model for the study of human aging. Despite the high regenerative capacity of the skin, skin physiology changes over the course of life. Medical and cosmetic research is trying to prevent aging, to slow, to stop, or to reverse it. Effects of age-related DNA damage and of changing skin structure on pharmacological parameters are largely unknown. This review article summarizes the state of scientific knowledge in the field of experimental models of human skin aging and shows approaches to improve organotypic skin models, to develop predictive models of aging, and improve aging research.
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