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Nakajima S, Nakamizo S, Nomura T, Ishida Y, Sawada Y, Kabashima K. Integrating multi-omics approaches in deciphering atopic dermatitis pathogenesis and future therapeutic directions. Allergy 2024. [PMID: 38837434 DOI: 10.1111/all.16183] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2024] [Revised: 04/23/2024] [Accepted: 05/24/2024] [Indexed: 06/07/2024]
Abstract
Atopic dermatitis (AD), a complex and heterogeneous chronic inflammatory skin disorder, manifests in a spectrum of clinical subtypes. The application of genomics has elucidated the role of genetic variations in predisposing individuals to AD. Transcriptomics, analyzing gene expression alterations, sheds light on the molecular underpinnings of AD. Proteomics explores the involvement of proteins in AD pathophysiology, while epigenomics examines the impact of environmental factors on gene expression. Lipidomics, which investigates lipid profiles, enhances our understanding of skin barrier functionalities and their perturbations in AD. This review synthesizes insights from these omics approaches, highlighting their collective importance in unraveling the intricate pathogenesis of AD. The review culminates by projecting future trajectories in AD research, particularly the promise of multi-omics in forging personalized medicine and novel therapeutic interventions. Such an integrated multi-omics strategy is poised to transform AD comprehension and management, steering towards more precise and efficacious treatment modalities.
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Affiliation(s)
- Saeko Nakajima
- Department of Dermatology, Kyoto University Graduate School of Medicine, Kyoto, Japan
- Department of Drug Discovery for Inflammatory Skin Diseases, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Satoshi Nakamizo
- Department of Dermatology, Kyoto University Graduate School of Medicine, Kyoto, Japan
- Alliance Laboratory for Advanced Medical Research, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Takashi Nomura
- Department of Dermatology, Kyoto University Graduate School of Medicine, Kyoto, Japan
- Department of Drug Development for Intractable Diseases, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Yoshihiro Ishida
- Department of Dermatology, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Yu Sawada
- Department of Dermatology, University of Occupational and Environmental Health, Kitakyushu, Japan
| | - Kenji Kabashima
- Department of Dermatology, Kyoto University Graduate School of Medicine, Kyoto, Japan
- A*STAR Skin Research Labs (A*SRL), Agency for Science, Technology and Research (A*STAR), Singapore, Singapore
- Skin Research Institute of Singapore (SRIS), Agency for Science, Technology and Research (A*STAR), Singapore, Singapore
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Zhang S, Fang X, Xu B, Zhou Y, Li F, Gao Y, Luo Y, Yao X, Liu X. Comprehensive analysis of phenotypes and transcriptome characteristics reveal the best atopic dermatitis mouse model induced by MC903. J Dermatol Sci 2024; 114:104-114. [PMID: 38806322 DOI: 10.1016/j.jdermsci.2024.05.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2024] [Revised: 04/01/2024] [Accepted: 05/13/2024] [Indexed: 05/30/2024]
Abstract
BACKGROUND Although several mouse models of exogenous-agent-induced atopic dermatitis (AD) are currently available, the lack of certainty regarding their similarity with human AD has limited their scientific value. Thus, comprehensive evaluation of the characteristics of mouse models and their similarity with human AD is essential. OBJECTIVE To compare six different exogenous-agent-induced AD mouse models and find out the optimum models for study. METHODS Female BALB/c mice underwent induction of AD-like dermatitis by MC903 alone or in combination with ovalbumin (OVA), dinitrofluorobenzene (DNFB) alone or in combination with OVA, OVA alone, or Staphylococcus aureus. Gross phenotype, total immunoglobulin E (IgE) level, histopathological manifestations, and skin lesion transcriptome were analyzed, and metagenomic sequencing of the gut microbiome was performed. RESULTS The DNFB plus OVA model showed the highest disease severity, while the OVA model showed the lowest severity. The MC903 and MC903 plus OVA models showed high expression of T-helper (Th)2- and Th17-related genes; the DNFB and DNFB plus OVA models showed upregulation of Th1-, Th2-, and Th17-related genes; while the S. aureus inoculation model showed more enhanced Th1 and Th17 immune responses. In contrast to the other models, the OVA-induced model showed the lowest expression levels of inflammation-related genes, while the MC903 model shared the largest overlap with human AD profiles. The intestinal microbiota of all groups showed significant differences after modeling. CONCLUSION Each AD mouse model exhibited different characteristics. The MC903 model was the best to recapitulate most features of human AD among these exogenous-agent-induced AD models.
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Affiliation(s)
- Shan Zhang
- Department of Allergy and Rheumatology, Jiangsu Key Laboratory of Molecular Biology for Skin Diseases and STIs, Hospital for Skin Diseases, Institute of Dermatology, Chinese Academy of Medical Sciences & Peking Union Medical College, Nanjing, China
| | - Xiaokai Fang
- Department of Allergy and Rheumatology, Jiangsu Key Laboratory of Molecular Biology for Skin Diseases and STIs, Hospital for Skin Diseases, Institute of Dermatology, Chinese Academy of Medical Sciences & Peking Union Medical College, Nanjing, China
| | - Beilei Xu
- Department of Allergy and Rheumatology, Jiangsu Key Laboratory of Molecular Biology for Skin Diseases and STIs, Hospital for Skin Diseases, Institute of Dermatology, Chinese Academy of Medical Sciences & Peking Union Medical College, Nanjing, China
| | - Yuan Zhou
- Department of Allergy and Rheumatology, Jiangsu Key Laboratory of Molecular Biology for Skin Diseases and STIs, Hospital for Skin Diseases, Institute of Dermatology, Chinese Academy of Medical Sciences & Peking Union Medical College, Nanjing, China
| | - Fang Li
- Department of Allergy and Rheumatology, Jiangsu Key Laboratory of Molecular Biology for Skin Diseases and STIs, Hospital for Skin Diseases, Institute of Dermatology, Chinese Academy of Medical Sciences & Peking Union Medical College, Nanjing, China
| | - Yuwen Gao
- Department of Allergy and Rheumatology, Jiangsu Key Laboratory of Molecular Biology for Skin Diseases and STIs, Hospital for Skin Diseases, Institute of Dermatology, Chinese Academy of Medical Sciences & Peking Union Medical College, Nanjing, China
| | - Yang Luo
- Department of Allergy and Rheumatology, Jiangsu Key Laboratory of Molecular Biology for Skin Diseases and STIs, Hospital for Skin Diseases, Institute of Dermatology, Chinese Academy of Medical Sciences & Peking Union Medical College, Nanjing, China
| | - Xu Yao
- Department of Allergy and Rheumatology, Jiangsu Key Laboratory of Molecular Biology for Skin Diseases and STIs, Hospital for Skin Diseases, Institute of Dermatology, Chinese Academy of Medical Sciences & Peking Union Medical College, Nanjing, China.
| | - Xiaochun Liu
- Department of Allergy and Rheumatology, Jiangsu Key Laboratory of Molecular Biology for Skin Diseases and STIs, Hospital for Skin Diseases, Institute of Dermatology, Chinese Academy of Medical Sciences & Peking Union Medical College, Nanjing, China.
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Wong TK, Choi YG, Li PH, Chow BKC, Kumar M. MRGPRX2 antagonist GE1111 attenuated DNFB-induced atopic dermatitis in mice by reducing inflammatory cytokines and restoring skin integrity. Front Immunol 2024; 15:1406438. [PMID: 38817611 PMCID: PMC11137259 DOI: 10.3389/fimmu.2024.1406438] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2024] [Accepted: 04/26/2024] [Indexed: 06/01/2024] Open
Abstract
Introduction Atopic dermatitis (AD) is a chronic inflammatory skin disorder characterised by itching, erythema, and epidermal barrier dysfunction. The pathogenesis of AD is complex and multifactorial; however,mast cell (MC) activation has been reported to be one of the crucial mechanisms in the pathogenesis of AD. The MC receptor Mas related G protein-coupled receptor-X2 (MRGPRX2) has been identified as a prominent alternative receptor to the IgE receptor in causing MC activation and the subsequent release of inflammatory mediators. The current study aimed to evaluate the therapeutic effect of a novel small molecule MRGPRX2 antagonist GE1111 in AD using in vitro and in vivo approaches. Methods We developed an in vitro cell culture disease model by using LAD-2 MC, HaCaT keratinocytes and RAW 264.7 macrophage cell lines. We challenged keratinocytes and macrophage cells with CST-14 treated MC supernatant in the presence and absence of GE1111 and measured the expression of tight junction protein claudin 1, inflammatory cytokines and macrophage phagocytosis activity through immunohistochemistry, western blotting, RT-qPCR and fluorescence imaging techniques. In addition to this, we developed a DFNB-induced AD model in mice and evaluated the protective effect and underlying mechanism of GE1111. Results and Discussion Our in vitro findings demonstrated a potential therapeutic effect of GE1111, which inhibits the expression of TSLP, IL-13, MCP-1, TNF-a, and IL-1ß in MC and keratinocytes. In addition to this, GE1111 was able to preserve the expression of claudin 1 in keratinocytes and the phagocytotic activity of macrophage cells. The in vivo results demonstrated that GE1111 treatment significantly reduced phenotypic changes associated with AD (skin thickening, scaling, erythema and epidermal thickness). Furthermore, immunohistochemical analysis demonstrated that GE1111 treatment preserved the expression of the tight junction protein Involucrin and reduced the expression of the inflammatory mediator periostin in the mouse model of AD. These findings were supported by gene and protein expression analysis, where GE1111 treatment reduced the expression of TSLP, IL-13, and IL-1ß, as well as downstream signalling pathways of MRGPRX2 in AD skin lesions. In conclusion, our findings provide compelling in vitro and in vivo evidence supporting the contribution of MRGPRX2-MC interaction with keratinocytes and macrophages in the pathogenesis of AD.
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Affiliation(s)
- Trevor K. Wong
- School of Biological Sciences, The University of Hong Kong, Hong Kong, Hong Kong SAR, China
- Faculty of Health Sciences, McMaster University, Hamliton, ON, Canada
| | - Ye Gi Choi
- School of Biological Sciences, The University of Hong Kong, Hong Kong, Hong Kong SAR, China
| | - Philip H. Li
- Division of Rheumatology and Clinical Immunology, Department of Medicine, Queen Mary Hospital, University of Hong Kong, Hong Kong SAR, China
| | - Billy K. C. Chow
- School of Biological Sciences, The University of Hong Kong, Hong Kong, Hong Kong SAR, China
| | - Mukesh Kumar
- School of Biological Sciences, The University of Hong Kong, Hong Kong, Hong Kong SAR, China
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Wang DM, Ma X, Xu ZA, Ding PJ, Cai WL, Li R, Wang WQ, Liu X, Zhang HM. Qingre Qushi formula suppresses atopic dermatitis via a multi-target mechanism. JOURNAL OF ETHNOPHARMACOLOGY 2024; 318:116923. [PMID: 37487967 DOI: 10.1016/j.jep.2023.116923] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/02/2023] [Revised: 07/02/2023] [Accepted: 07/13/2023] [Indexed: 07/26/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Our previous studies have shown that the Qingre Qushi (QRQS) formula can treat atopic dermatitis (AD), and its possible mechanism is related to the regulation of the IL-33/ST2 signaling pathway. However, the molecular mechanism of AD is complex, and various AD subtypes respond better to therapies aimed at distinct targets. AIM OF THE STUDY This study aimed to investigate the multi-target mechanism of QRQS using experimental and network pharmacology studies. MATERIALS AND METHODS Flaky tail (FT) mice were treated with different concentrations of QRQS and cetirizine. The dermatitis score, scratching frequency, and histological evaluation were normatively evaluated. The levels of IgE and IgG1 in serum were tested using ELISAs. Using ELISA and RT-PCR, the expression of associated cytokines was determined. IL-17A-stimulated HaCaT cells were treated with QRQS to assess mRNA and protein expression. To elucidate the mechanism, a network pharmacology analysis based on active components derived from UPLC was conducted. Through molecular docking, we evaluated the binding affinity between the active constituents of QRQS and potential targets. RESULTS Using UPLC, 177 active ingredients in QRQS were identified. Network pharmacology analysis showed that the anti-AD effect of the active ingredients was related to the IL-17 signaling pathway and its related targets. FT mice are characterized by Th17-dominated immune disorders. QRQS ameliorated AD-like symptoms and decreased dermatitis scores and scratching frequencies. After QRQS treatment, IL-17A expression was inhibited and IL-17 pathway-associated cytokines were downregulated. Along with changes in Th17-differentiation, QRQS suppressed the expression of IL-4, IL-13, and TNF-α. QRQS also decreased the expression of IL-6, IL-8, and COX-2 in HaCaT cells exposed to IL-17A. The anti-AD active doses are 3.86 g/kg/day in vivo and 100 μg/mL in vitro. CONCLUSION QRQS has a multi-target immunoregulatory effect on AD and can improve the Th17-dominated inflammatory response by regulating the IL-17A signaling pathway. Quercetin, genistein, luteolin, and kaempferol are potential active ingredients.
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Affiliation(s)
- Dong-Ming Wang
- Department of Dermatology, Shuguang Hospital Affiliated with Shanghai University of Traditional Chinese Medicine, Shanghai, China.
| | - Xin Ma
- Shanghai Skin Disease Hospital, School of Medicine, Tongji University, Shanghai, China.
| | - Zhi-Ao Xu
- School of Life Science, Xuzhou Medical University, Jiangsu Province, China.
| | - Pei-Jun Ding
- Department of Dermatology, Shuguang Hospital Affiliated with Shanghai University of Traditional Chinese Medicine, Shanghai, China.
| | - Wan-Ling Cai
- Department of Dermatology, Shuguang Hospital Affiliated with Shanghai University of Traditional Chinese Medicine, Shanghai, China.
| | - Rui Li
- School of Life Science, Xuzhou Medical University, Jiangsu Province, China.
| | - Wu-Qing Wang
- Department of Dermatology, Shuguang Hospital Affiliated with Shanghai University of Traditional Chinese Medicine, Shanghai, China.
| | - Xin Liu
- School of Medical Information & Engineering, Xuzhou Medical University, Jiangsu Province, China.
| | - Hui-Min Zhang
- Department of Dermatology, Shuguang Hospital Affiliated with Shanghai University of Traditional Chinese Medicine, Shanghai, China.
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Nakayama K, Tetsu H, Nishijo T, Yuki T, Miyazawa M. Tolerogenic phenotype of dendritic cells is induced after hapten sensitization followed by attenuated contact hypersensitivity response in atopic dermatitis model NC/Nga mice. Biochem Biophys Res Commun 2023; 678:24-32. [PMID: 37611349 DOI: 10.1016/j.bbrc.2023.08.042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2023] [Revised: 08/10/2023] [Accepted: 08/17/2023] [Indexed: 08/25/2023]
Abstract
Allergic contact dermatitis (ACD) and atopic dermatitis (AD) are common inflammatory diseases. We previously reported attenuated contact hypersensitivity (CHS) responses in AD model mice using 2,4-dinitrofluorobenzene, reflecting clinical experiments. However, previous studies have not addressed the commonality of findings across haptens and mechanisms focused on dendritic cells (DCs). Thus, this study evaluated CHS responses to fluorescein isothiocyanate (FITC) and DC migration and maturation in the sensitization phase of CHS in AD. CHS responses to FITC were compared between NC/Nga mice without and with AD induction (non-AD and AD mice, respectively). T-cell responses and DC migration and maturation after FITC-induced sensitization were examined in the draining lymph nodes of non-AD and AD mice. AD mice demonstrated reduced CHS responses to FITC under decreased T-cell proliferation following sensitization and interferon-γ production by hapten-specific T cells compared with non-AD mice. In addition, the number of FITC+CD11c+MHC class IIhigh migratory DCs 24 h after FITC sensitization was comparable between non-AD and AD mice. However, FITC+CD11c+MHC class IIhigh migratory DCs in AD mice exhibited lower expression levels of CD80 and CD86 and higher expression levels of PD-L1 and mRNA of transforming growth factor beta than non-AD mice. These findings suggest that attenuated CHS responses may be hapten-independent and the induction of the tolerogenic phenotype of hapten-bearing DCs can contribute to reduced T-cell proliferation after sensitization and CHS responses in AD.
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Affiliation(s)
- Kanako Nakayama
- Safety Science Research Laboratories, Kao Corporation, 2606 Akabane, Ichikai, Haga, Tochigi, 321-3497, Japan.
| | - Hiroe Tetsu
- Safety Science Research Laboratories, Kao Corporation, 2606 Akabane, Ichikai, Haga, Tochigi, 321-3497, Japan
| | - Taku Nishijo
- Safety Science Research Laboratories, Kao Corporation, 2606 Akabane, Ichikai, Haga, Tochigi, 321-3497, Japan
| | - Takuo Yuki
- Safety Science Research Laboratories, Kao Corporation, 2606 Akabane, Ichikai, Haga, Tochigi, 321-3497, Japan
| | - Masaaki Miyazawa
- Safety Science Research Laboratories, Kao Corporation, 2606 Akabane, Ichikai, Haga, Tochigi, 321-3497, Japan
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Minzaghi D, Pavel P, Kremslehner C, Gruber F, Oberreiter S, Hagenbuchner J, Del Frari B, Blunder S, Gruber R, Dubrac S. Excessive Production of Hydrogen Peroxide in Mitochondria Contributes to Atopic Dermatitis. J Invest Dermatol 2023; 143:1906-1918.e8. [PMID: 37085042 DOI: 10.1016/j.jid.2023.03.1680] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2022] [Revised: 03/07/2023] [Accepted: 03/30/2023] [Indexed: 04/23/2023]
Abstract
Atopic dermatitis (AD) is a complex disease characterized by chronic recurring eczema and pruritus. In addition, patients with AD display increased cutaneous and systemic levels of oxidative damage markers, whose source remains elusive. In this study, we investigated oxidative and mitochondrial stress in AD epidermis. The levels of superoxide dismutase 2 and hydrogen peroxide are augmented in the mitochondria of flaky tail (ft/ft) mouse keratinocytes, which is associated with the inhibition of the glutathione system and catalase. Furthermore, reduced levels of glutathione peroxidase 4 are associated with accumulation of malondialdehyde, 4-hydroxy-2-nonenal, and oxidized phosphatidylcholines in ft/ft epidermis. Cytochrome c is markedly increased in ft/ft epidermis, hence showing mitochondrial stress. Topical application of MitoQ, which is a mitochondrial-targeting antioxidant, to ft/ft mouse skin reduced damage to macromolecules and inflammation and restored epidermal homeostasis. Absence of alteration in the expression of superoxide dismutase 2, catalase, and glutathione peroxidase 4 and limited lipid peroxidation as well as oxidized phosphatidylcholines in the epidermis of Flg-/- mice suggest that FLG deficiency marginally contributes to oxidative stress in ft/ft epidermis. Increased superoxide dismutase 2, lipid peroxidation, and cytochrome c in the epidermis of patients with AD, associated with reduced antioxidant response in primary AD keratinocytes, corroborate mitochondrial dysfunction and lack of cellular adjustment to oxidative stress in AD epidermis.
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Affiliation(s)
- Deborah Minzaghi
- Department of Dermatology, Venereology and Allergology, Medical University of Innsbruck, Innsbruck, Austria
| | - Petra Pavel
- Department of Dermatology, Venereology and Allergology, Medical University of Innsbruck, Innsbruck, Austria
| | | | - Florian Gruber
- Department of Dermatology, Medical University of Vienna, Vienna, Austria
| | - Sophie Oberreiter
- Department of Dermatology, Venereology and Allergology, Medical University of Innsbruck, Innsbruck, Austria
| | | | - Barbara Del Frari
- Department of Plastic, Reconstructive and Aesthetic Surgery, Medical University of Innsbruck, Innsbruck, Austria
| | - Stefan Blunder
- Department of Dermatology, Venereology and Allergology, Medical University of Innsbruck, Innsbruck, Austria
| | - Robert Gruber
- Department of Dermatology, Venereology and Allergology, Medical University of Innsbruck, Innsbruck, Austria
| | - Sandrine Dubrac
- Department of Dermatology, Venereology and Allergology, Medical University of Innsbruck, Innsbruck, Austria.
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Keith YH, Egawa G, Honda T, Kabashima K. Mast cells in type 2 skin inflammation: Maintenance and function. Eur J Immunol 2023; 53:e2250359. [PMID: 36933268 DOI: 10.1002/eji.202250359] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2022] [Revised: 02/24/2023] [Accepted: 03/15/2023] [Indexed: 03/19/2023]
Abstract
Mast cells (MCs) are immune cells residing in tissues and playing indispensable roles in maintaining homeostasis and inflammatory states. Skin lesions associated with atopic dermatitis (AD) and type 2 skin inflammation display an increment in MCs, which have both pro- and anti-inflammatory effects. The direct and indirect activations of skin MCs by environmental factors such as Staphylococcus aureus can instigate type 2 skin inflammation in AD with poorly understood mechanisms. Furthermore, both IgE-dependent and -independent degranulation of MCs contribute to pruritus in AD. Conversely, MCs suppress type 2 skin inflammation by promoting Treg expansion through IL-2 secretion in the spleen. Moreover, skin MCs can upregulate gene expression involved in skin barrier function, thus mitigating AD-like inflammation. These functional variances of MCs in AD could stem from differences in experimental systems, their localization, and origins. In this review, we will focus on how MCs are maintained in the skin under homeostatic and inflammatory conditions, and how they are involved in the pathogenesis of type 2 skin inflammation.
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Affiliation(s)
- Yuki Honda Keith
- Department of Dermatology, Kyoto University Graduate School of Medicine, Kyoto, Japan
- Intravital Microscopy Laboratory and Gene Expression (IMAGE) Lab, Precision Immunology Program, Garvan Institute of Medical Research, Sydney, Australia
| | - Gyohei Egawa
- Department of Dermatology, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Tetsuya Honda
- Department of Dermatology, Hamamatsu University School of Medicine, Hamamatsu, Japan
| | - Kenji Kabashima
- Department of Dermatology, Kyoto University Graduate School of Medicine, Kyoto, Japan
- Singapore Immunology Network (SIgN), Agency for Science, Technology and Research (A*STAR), Biopolis, Singapore
- A*Star Skin Research Labs (A*SRL), Agency for Science, Technology and Research (A*STAR), Biopolis, Singapore
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Tetsu H, Nakayama K, Nishijo T, Takuo Y, Miyazawa M. CTLA-4 suppresses hapten-induced contact hypersensitivity in atopic dermatitis model mice. Sci Rep 2023; 13:7936. [PMID: 37193880 DOI: 10.1038/s41598-023-35139-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2023] [Accepted: 05/13/2023] [Indexed: 05/18/2023] Open
Abstract
Atopic dermatitis (AD) patients with skin barrier dysfunction are considered to be at a higher risk of allergic contact dermatitis (ACD), although previous studies showed that attenuated ACD responses to strong sensitizers in AD patients compared to healthy controls. However, the mechanisms of ACD response attenuation in AD patients are unclear. Therefore, using the contact hypersensitivity (CHS) mouse model, this study explored the differences in CHS responses to hapten sensitization between NC/Nga mice with or without AD induction (i.e., non-AD and AD mice, respectively). In this study, ear swelling and hapten-specific T cell proliferation were significantly lower in AD than in non-AD mice. Moreover, we examined the T cells expressing cytotoxic T lymphocyte antigen-4 (CTLA-4), which is known to suppress T cell activation, and found a higher frequency of CTLA-4+ regulatory T cells in draining lymph node cells in AD than in non-AD mice. Furthermore, the blockade of CTLA-4 using a monoclonal antibody eliminated the difference in ear swelling between non-AD and AD mice. These findings suggested that CTLA-4+T cells may contribute to suppressing the CHS responses in AD mice.
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Affiliation(s)
- Hiroe Tetsu
- Safety Science Research Laboratories, Kao Corporation, 2606 Akabane, Ichikai, Haga, Tochigi, 321-3497, Japan.
| | - Kanako Nakayama
- Safety Science Research Laboratories, Kao Corporation, 2606 Akabane, Ichikai, Haga, Tochigi, 321-3497, Japan
| | - Taku Nishijo
- Safety Science Research Laboratories, Kao Corporation, 2606 Akabane, Ichikai, Haga, Tochigi, 321-3497, Japan
| | - Yuki Takuo
- Safety Science Research Laboratories, Kao Corporation, 2606 Akabane, Ichikai, Haga, Tochigi, 321-3497, Japan
| | - Masaaki Miyazawa
- Safety Science Research Laboratories, Kao Corporation, 2606 Akabane, Ichikai, Haga, Tochigi, 321-3497, Japan
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Numata T, Harada K, Nakae S. Roles of Mast Cells in Cutaneous Diseases. Front Immunol 2022; 13:923495. [PMID: 35874756 PMCID: PMC9298983 DOI: 10.3389/fimmu.2022.923495] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2022] [Accepted: 06/16/2022] [Indexed: 01/05/2023] Open
Abstract
Mast cells are present in all vascularized tissues of the body. They are especially abundant in tissues that are in frequent contact with the surrounding environment and act as potential sources of inflammatory and/or regulatory mediators during development of various infections and diseases. Mature mast cells’ cytoplasm contains numerous granules that store a variety of chemical mediators, cytokines, proteoglycans, and proteases. Mast cells are activated via various cell surface receptors, including FcϵRI, toll-like receptors (TLR), Mas-related G-protein-coupled receptor X2 (MRGPRX2), and cytokine receptors. IgE-mediated mast cell activation results in release of histamine and other contents of their granules into the extracellular environment, contributing to host defense against pathogens. TLRs, play a crucial role in host defense against various types of pathogens by recognizing pathogen-associated molecular patterns. On the other hand, excessive/inappropriate mast cell activation can cause various disorders. Here, we review the published literature regarding the known and potential inflammatory and regulatory roles of mast cells in cutaneous inflammation, including atopic dermatitis, psoriasis, and contact dermatitis GVHD, as well as in host defense against pathogens.
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Affiliation(s)
- Takafumi Numata
- Department of Dermatology, Tokyo Medical University, Tokyo, Japan
| | - Kazutoshi Harada
- Department of Dermatology, Tokyo Medical University, Tokyo, Japan
| | - Susumu Nakae
- Graduate School of Integrated Sciences for Life, Hiroshima University, Hiroshima, Japan.,Precursory Research for Embryonic Science and Technology, Japan Science and Technology Agency, Saitama, Japan
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10
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Sanjel B, Shim WS. The contribution of mouse models to understanding atopic dermatitis. Biochem Pharmacol 2022; 203:115177. [PMID: 35843300 DOI: 10.1016/j.bcp.2022.115177] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2022] [Revised: 07/08/2022] [Accepted: 07/11/2022] [Indexed: 12/28/2022]
Abstract
Atopic dermatitis (AD) is a dermatological disease accompanied by dry and cracked skin with severe pruritus. Although various therapeutic strategies have been introduced to alleviate AD, it remains challenging to cure the disorder. To achieve such a goal, understanding the pathophysiological mechanisms of AD is a prerequisite, requiring mouse models that properly reflect the AD phenotypes. Currently, numerous AD mouse models have been established, but each model has its own advantages and weaknesses. In this review, we categorized and summarized mouse models of AD and described their characteristics from a researcher's perspective.
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Affiliation(s)
- Babina Sanjel
- College of Pharmacy, Gachon University, Hambangmoero 191, Yeonsu-gu, Incheon 21936, Republic of Korea; Gachon Institute of Pharmaceutical Sciences, Hambangmoero 191, Yeonsu-gu, Incheon 21936, Republic of Korea
| | - Won-Sik Shim
- College of Pharmacy, Gachon University, Hambangmoero 191, Yeonsu-gu, Incheon 21936, Republic of Korea; Gachon Institute of Pharmaceutical Sciences, Hambangmoero 191, Yeonsu-gu, Incheon 21936, Republic of Korea.
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11
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Loricrin at the Boundary between Inside and Outside. Biomolecules 2022; 12:biom12050673. [PMID: 35625601 PMCID: PMC9138667 DOI: 10.3390/biom12050673] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2022] [Revised: 04/30/2022] [Accepted: 05/04/2022] [Indexed: 02/04/2023] Open
Abstract
Cornification is a specialized mode of the cell-death program exclusively allowed for terrestrial amniotes. Recent investigations suggest that loricrin (LOR) is an important cornification effector. As the connotation of its name (“lorica” meaning an armor in Latin) suggests, the keratin-associated protein LOR promotes the maturation of the epidermal structure through organizing covalent cross-linkages, endowing the epidermis with the protection against oxidative injuries. By reviewing cornification mechanisms, we seek to classify ichthyosiform dermatoses based on their function, rather than clinical manifestations. We also reviewed recent mechanistic insights into the Kelch-like erythroid cell-derived protein with the cap “n” collar homology-associated protein 1/nuclear factor erythroid 2-related factor 2 (NRF2) signaling pathway in skin health and diseases, as LOR and NRF2 coordinate the epidermis-intrinsic xenobiotic metabolism. Finally, we refine the theoretical framework of cross-talking between keratinocytes and epidermal resident leukocytes, dissecting an LOR immunomodulatory function.
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Rodrigues de Souza I, Savio de Araujo-Souza P, Morais Leme D. Genetic variants affecting chemical mediated skin immunotoxicity. JOURNAL OF TOXICOLOGY AND ENVIRONMENTAL HEALTH. PART B, CRITICAL REVIEWS 2022; 25:43-95. [PMID: 34979876 DOI: 10.1080/10937404.2021.2013372] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
The skin is an immune-competent organ and this function may be impaired by exposure to chemicals, which may ultimately result in immune-mediated dermal disorders. Interindividual variability to chemical-induced skin immune reactions is associated with intrinsic individual characteristics and their genomes. In the last 30-40 years, several genes influencing susceptibility to skin immune reactions were identified. The aim of this review is to provide information regarding common genetic variations affecting skin immunotoxicity. The polymorphisms selected for this review are related to xenobiotic-metabolizing enzymes (CYPA1 and CYPB1 genes), antioxidant defense (GSTM1, GSTT1, and GSTP1 genes), aryl hydrocarbon receptor signaling pathway (AHR and ARNT genes), skin barrier function transepidermal water loss (FLG, CASP14, and SPINK5 genes), inflammation (TNF, IL10, IL6, IL18, IL31, and TSLP genes), major histocompatibility complex (MHC) and neuroendocrine system peptides (CALCA, TRPV1, ACE genes). These genes present variants associated with skin immune responses and diseases, as well as variants associated with protecting skin immune homeostasis following chemical exposure. The molecular and association studies focusing on these genetic variants may elucidate their functional consequences and contribution in the susceptibility to skin immunotoxicity. Providing information on how genetic variations affect the skin immune system may reduce uncertainties in estimating chemical hazards/risks for human health in the future.
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Affiliation(s)
| | | | - Daniela Morais Leme
- Graduate Program in Genetics, Department of Genetics, Federal University of Paraná (UFPR), Curitiba, Brazil
- National Institute for Alternative Technologies of Detection, Toxicological Evaluation and Removal of Micropollutants and Radioactives (INCT-DATREM), Institute of Chemistry, Araraquara, Brazil
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13
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Ishitsuka Y, Roop DR. The Epidermis: Redox Governor of Health and Diseases. Antioxidants (Basel) 2021; 11:47. [PMID: 35052551 PMCID: PMC8772843 DOI: 10.3390/antiox11010047] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2021] [Accepted: 12/25/2021] [Indexed: 12/13/2022] Open
Abstract
A functional epithelial barrier necessitates protection against dehydration, and ichthyoses are caused by defects in maintaining the permeability barrier in the stratum corneum (SC), the uppermost protective layer composed of dead cells and secretory materials from the living layer stratum granulosum (SG). We have found that loricrin (LOR) is an essential effector of cornification that occurs in the uppermost layer of SG (SG1). LOR promotes the maturation of corneocytes and extracellular adhesion structure through organizing disulfide cross-linkages, albeit being dispensable for the SC permeability barrier. This review takes psoriasis and AD as the prototype of impaired cornification. Despite exhibiting immunological traits that oppose each other, both conditions share the epidermal differentiation complex as a susceptible locus. We also review recent mechanistic insights on skin diseases, focusing on the Kelch-like erythroid cell-derived protein with the cap "n" collar homology-associated protein 1/NFE2-related factor 2 signaling pathway, as they coordinate the epidermis-intrinsic xenobiotic metabolism. Finally, we refine the theoretical framework of thiol-mediated crosstalk between keratinocytes and leukocytes in the epidermis that was put forward earlier.
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Affiliation(s)
- Yosuke Ishitsuka
- Department of Dermatology Integrated Medicine, Osaka University Graduate School of Medicine, 2-2 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Dennis R. Roop
- Charles C. Gates Center for Regenerative Medicine, Department of Dermatology, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA;
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14
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Pavel P, Leman G, Hermann M, Ploner C, Eichmann TO, Minzaghi D, Radner FP, Del Frari B, Gruber R, Dubrac S. Peroxisomal Fatty Acid Oxidation and Glycolysis Are Triggered in Mouse Models of Lesional Atopic Dermatitis. JID INNOVATIONS 2021; 1:100033. [PMID: 34909730 PMCID: PMC8659757 DOI: 10.1016/j.xjidi.2021.100033] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2020] [Revised: 04/09/2021] [Accepted: 04/09/2021] [Indexed: 12/12/2022] Open
Abstract
Alterations of the lipid profile of the stratum corneum have an important role in the pathogenesis of atopic dermatitis (AD) because they contribute to epidermal barrier impairment. However, they have not previously been envisioned as a cellular response to altered metabolic requirements in AD epidermis. In this study, we report that the lipid composition in the epidermis of flaky tail, that is, ft/ft mice mimics that of human lesional AD (ADL) epidermis, both showing a shift toward shorter lipid species. The amounts of C24 and C26 free fatty acids and C24 and C26 ceramides-oxidized exclusively in peroxisomes-were reduced in the epidermis of ft/ft mice despite increased lipid synthesis, similar to that seen in human ADL edpidermis. Increased ACOX1 protein and activity in granular keratinocytes of ft/ft epidermis, altered lipid profile in human epidermal equivalents overexpressing ACOX1, and increased ACOX1 immunostaining in skin biopsies from patients with ADL suggest that peroxisomal β-oxidation significantly contributes to lipid signature in ADL epidermis. Moreover, we show that increased anaerobic glycolysis in ft/ft mouse epidermis is essential for keratinocyte proliferation and adenosine triphosphate synthesis but does not contribute to local inflammation. Thus, this work evidenced a metabolic shift toward enhanced peroxisomal β-oxidation and anaerobic glycolysis in ADL epidermis.
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Key Words
- AD, atopic dermatitis
- ADL, lesional atopic dermatitis
- ATP, adenosine triphosphate
- Cer, ceramide
- CoA, coenzyme A
- FA, fatty acid
- FFA, free fatty acid
- HEE, human epidermal equivalent
- IMQ, imiquimod
- KC, keratinocyte
- KO, knockout
- LB, lamellar body
- PPAR, peroxisome proliferator–activated receptor
- SC, stratum corneum
- TEWL, transepidermal water loss
- ULCFA, ultra long-chain fatty acid
- VLCFA, very-long-chain fatty acid
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Affiliation(s)
- Petra Pavel
- Department of Dermatology, Venereology and Allergology, Medical University of Innsbruck, Innsbruck, Austria
| | - Géraldine Leman
- Department of Dermatology, Venereology and Allergology, Medical University of Innsbruck, Innsbruck, Austria
| | - Martin Hermann
- KMT Laboratory, Department of Visceral, Transplant and Thoracic Surgery, Center for Operative Medicine, Medical University of Innsbruck, Innsbruck, Austria
| | - Christian Ploner
- Department of Plastic, Reconstructive and Aesthetic Surgery, Medical University of Innsbruck, Innsbruck, Austria
| | | | - Deborah Minzaghi
- Department of Dermatology, Venereology and Allergology, Medical University of Innsbruck, Innsbruck, Austria
| | - Franz P.W. Radner
- Institute of Molecular Biosciences, University of Graz, Graz, Austria
| | - Barbara Del Frari
- Department of Plastic, Reconstructive and Aesthetic Surgery, Medical University of Innsbruck, Innsbruck, Austria
| | - Robert Gruber
- Department of Dermatology, Venereology and Allergology, Medical University of Innsbruck, Innsbruck, Austria
| | - Sandrine Dubrac
- Department of Dermatology, Venereology and Allergology, Medical University of Innsbruck, Innsbruck, Austria
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15
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Gilhar A, Reich K, Keren A, Kabashima K, Steinhoff M, Paus R. Mouse models of atopic dermatitis: a critical reappraisal. Exp Dermatol 2021; 30:319-336. [PMID: 33368555 DOI: 10.1111/exd.14270] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2020] [Revised: 12/17/2020] [Accepted: 12/17/2020] [Indexed: 12/13/2022]
Abstract
Mouse models for atopic dermatitis (AD) are an indispensable preclinical research tool for testing new candidate AD therapeutics and for interrogating AD pathobiology in vivo. In this Viewpoint, we delineate why, unfortunately, none of the currently available so-called "AD" mouse models satisfactorily reflect the clinical complexity of human AD, but imitate more "allergic" or "irriant" contact dermatitis conditions. This limits the predictive value of AD models for clinical outcomes of new tested candidate AD therapeutics and the instructiveness of mouse models for human AD pathophysiology research. Here, we propose to initiate a rational debate on the minimal criteria that a mouse model should meet in order to be considered relevant for human AD. We suggest that valid AD models should at least meet the following criteria: (a) an AD-like epidermal barrier defect with reduced filaggrin expression along with hyperproliferation, hyperplasia; (b) increased epidermal expression of thymic stromal lymphopoietin (TSLP), periostin and/or chemokines such as TARC (CCL17); (c) a characteristic dermal immune cell infiltrate with overexpression of some key cytokines such as IL-4, IL-13, IL-31 and IL-33; (d) distinctive "neurodermatitis" features (sensory skin hyperinnervation, defective beta-adrenergic signalling, neurogenic skin inflammation and triggering or aggravation of AD-like skin lesions by perceived stress); and (e) response of experimentally induced skin lesions to standard AD therapy. Finally, we delineate why humanized AD mouse models (human skin xenotransplants on SCID mice) offer a particularly promising preclinical research alternative to the currently available "AD" mouse models.
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Affiliation(s)
- Amos Gilhar
- Skin Research Laboratory, Rappaport Faculty of Medicine, Technion -Israel Institute of Technology, Haifa, Israel.,Rambam Health Care Campus, Haifa, Israel
| | - Kristian Reich
- Centre for Translational Research in Inflammatory Skin Diseases, Institute for Health Services Research in Dermatology and Nursing, University Medical Center Hamburg-Eppendorf, Hamburg, Germany.,Skinflammation Center, Hamburg, Germany
| | - Aviad Keren
- Skin Research Laboratory, Rappaport Faculty of Medicine, Technion -Israel Institute of Technology, Haifa, Israel
| | - Kenji Kabashima
- Department of Dermatology, Kyoto University Graduate School of Medicine, Kyoto, Japan.,Singapore Immunology Network (SIgN) and Institute of Medical Biology, Agency for Science, Technology and Research (A*STAR), Biopolis, Singapore, Singapore
| | - Martin Steinhoff
- Department of Dermatology and Venereology, Hamad Medical Corporation, Qatar University, Doha, Qatar.,School of Medicine, Weill Cornell University-Qatar and Qatar University, Doha, Qatar
| | - Ralf Paus
- Dr. Phillip Frost, Department of Dermatology & Cutaneous Surgery, University of Miami Miller School of Medicine, Miami, FL, USA.,Dermatology Research Centre, University of Manchester and NIHR Manchester Biomedical Research Centre, Manchester, UK.,Monasterium Laboratory, Münster, Germany
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16
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17
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Moniz T, Costa Lima SA, Reis S. Human skin models: From healthy to disease-mimetic systems; characteristics and applications. Br J Pharmacol 2020; 177:4314-4329. [PMID: 32608012 PMCID: PMC7484561 DOI: 10.1111/bph.15184] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2020] [Revised: 06/15/2020] [Accepted: 06/18/2020] [Indexed: 12/17/2022] Open
Abstract
Skin drug delivery is an emerging route in drug development, leading to an urgent need to understand the behaviour of active pharmaceutical ingredients within the skin. Given, As one of the body's first natural defences, the barrier properties of skin provide an obstacle to the successful outcome of any skin drug therapy. To elucidate the mechanisms underlying this barrier, reductionist strategies have designed several models with different levels of complexity, using non-biological and biological components. Besides the detail of information and resemblance to human skin in vivo, offered by each in vitro model, the technical and economic efforts involved must also be considered when selecting the most suitable model. This review provides an outline of the commonly used skin models, including healthy and diseased conditions, in-house developed and commercialized models, their advantages and limitations, and an overview of the new trends in skin-engineered models.
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Affiliation(s)
- Tânia Moniz
- LAQV, REQUIMTE, Departamento de Ciências Químicas, Faculdade de FarmáciaUniversidade do PortoPortoPortugal
| | - Sofia A. Costa Lima
- LAQV, REQUIMTE, Departamento de Ciências Químicas, Faculdade de FarmáciaUniversidade do PortoPortoPortugal
| | - Salette Reis
- LAQV, REQUIMTE, Departamento de Ciências Químicas, Faculdade de FarmáciaUniversidade do PortoPortoPortugal
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18
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Suprabasin-null mice retain skin barrier function and show high contact hypersensitivity to nickel upon oral nickel loading. Sci Rep 2020; 10:14559. [PMID: 32884021 PMCID: PMC7471289 DOI: 10.1038/s41598-020-71536-3] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2020] [Accepted: 08/06/2020] [Indexed: 12/22/2022] Open
Abstract
Suprabasin (SBSN) is expressed not only in epidermis but also in epithelial cells of the upper digestive tract where metals such as nickel are absorbed. We have recently shown that SBSN level is decreased in the stratum corneum and serum of atopic dermatitis (AD) patients, especially in intrinsic AD, which is characterized by metal allergy. By using SBSN-null (Sbsn–/–) mice, this study was conducted to investigate the outcome of SBSN deficiency in relation to AD. Sbsn–/– mice exhibited skin barrier dysfunction on embryonic day 16.5, but after birth, their barrier function was not perturbed despite the presence of ultrastructural changes in stratum corneum and keratohyalin granules. Sbsn–/– mice showed a comparable ovalbumin-specific skin immune response to wild type (WT) mice and rather lower contact hypersensitivity (CHS) responses to haptens than did WT mice. The blood nickel level after oral feeding of nickel was significantly higher in Sbsn–/– mice than in WT mice, and CHS to nickel was elevated in Sbsn–/– mice under nickel-loading condition. Our study suggests that the completely SBSN deficient mice retain normal barrier function, but harbor abnormal upper digestive tract epithelium that promotes nickel absorption and high CHS to nickel, sharing the features of intrinsic AD.
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19
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Jee MH, Mraz V, Geisler C, Bonefeld CM. γδ T cells and inflammatory skin diseases. Immunol Rev 2020; 298:61-73. [DOI: 10.1111/imr.12913] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2020] [Revised: 07/07/2020] [Accepted: 07/15/2020] [Indexed: 12/15/2022]
Affiliation(s)
- Mia Hamilton Jee
- The LEO Foundation Skin Immunology Research Center Department of Immunology and Microbiology Faculty of Health and Medical Sciences University of Copenhagen Copenhagen Denmark
| | - Veronika Mraz
- The LEO Foundation Skin Immunology Research Center Department of Immunology and Microbiology Faculty of Health and Medical Sciences University of Copenhagen Copenhagen Denmark
| | - Carsten Geisler
- The LEO Foundation Skin Immunology Research Center Department of Immunology and Microbiology Faculty of Health and Medical Sciences University of Copenhagen Copenhagen Denmark
| | - Charlotte Menné Bonefeld
- The LEO Foundation Skin Immunology Research Center Department of Immunology and Microbiology Faculty of Health and Medical Sciences University of Copenhagen Copenhagen Denmark
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20
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Martin SF, Bonefeld CM. Mechanisms of Irritant and Allergic Contact Dermatitis. Contact Dermatitis 2020. [DOI: 10.1007/978-3-319-72451-5_59-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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21
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kandan PV, Balupillai A, Kanimozhi G, Khan HA, Alhomida AS, Prasad NR. Opuntiol Prevents Photoaging of Mouse Skin via Blocking Inflammatory Responses and Collagen Degradation. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2020; 2020:5275178. [PMID: 33312336 PMCID: PMC7721505 DOI: 10.1155/2020/5275178] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/01/2020] [Revised: 10/20/2020] [Accepted: 11/07/2020] [Indexed: 02/05/2023]
Abstract
In the present study, we investigated the potential of opuntiol, isolated from Opuntia ficus-indica, against UVA radiation-mediated inflammation and skin photoaging in experimental animals. The skin-shaved experimental mouse was subjected to UVA exposure at the dosage of 10 J/cm2 per day for ten consecutive days (cumulative UVA dose: 100 J/cm2). Opuntiol (50 mg/kg b.wt.) was topically applied one hour before each UVA exposure. UVA (100 J/cm2) exposure induces epidermal hyperplasia and collagen disarrangement which leads to the photoaging-associated molecular changes in the mouse skin. Opuntiol pretreatment prevented UVA-linked clinical macroscopic skin lesions and histological changes in the mouse skin. Further, opuntiol prevents UVA-linked dermal collagen fiber loss in the mouse skin. Short-term UVA radiation (100 J/cm2) activates MAPKs through AP-1 and NF-κB p65 transcriptional pathways and subsequently induces the expression of inflammatory proteins and matrix-degrading proteinases in the mouse skin. Interestingly, opuntiol pretreatment inhibited UVA-induced activation of iNOS, VEGF, TNF-α, and COX-2 proteins and consequent activation of MMP-2, MMP-9, and MMP-12 in the mouse skin. Moreover, opuntiol was found to prevent collagen I and III breakdown in UVA radiation-exposed mouse skin. Thus, opuntiol protects mouse skin from UVA radiation-associated photoaging responses through inhibiting inflammatory responses, MAPK activation, and degradation of matrix collagen molecules.
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Affiliation(s)
- P. Veeramani kandan
- 1Department of Biochemistry & Biotechnology, Annamalai University, Annamalainagar, 608 002 Tamil Nadu, India
| | - Agilan Balupillai
- 1Department of Biochemistry & Biotechnology, Annamalai University, Annamalainagar, 608 002 Tamil Nadu, India
- 2Department of Biotechnology, Thiruvalluvar University, Serkadu, 632115 Vellore, Tamil Nadu, India
| | - G. Kanimozhi
- 3Department of Biochemistry, Dharmapuram Gnanambigai Government Arts College for Women, Mayiladuthurai, Tamil Nadu, India
| | - Haseeb A. Khan
- 4Department of Biochemistry, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
| | - Abdullah S. Alhomida
- 4Department of Biochemistry, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
| | - Nagarajan Rajendra Prasad
- 1Department of Biochemistry & Biotechnology, Annamalai University, Annamalainagar, 608 002 Tamil Nadu, India
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22
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Nakajima S, Nomura T, Common J, Kabashima K. Insights into atopic dermatitis gained from genetically defined mouse models. J Allergy Clin Immunol 2019; 143:13-25. [PMID: 30612664 DOI: 10.1016/j.jaci.2018.11.014] [Citation(s) in RCA: 50] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2018] [Revised: 11/14/2018] [Accepted: 11/16/2018] [Indexed: 01/01/2023]
Abstract
Atopic dermatitis (AD) is characterized by severe pruritus and recurrent eczema with a chronic disease course. Impaired skin barrier function, hyperactivated TH2 cell-type inflammation, and pruritus-induced scratching contribute to the disease pathogenesis of AD. Skin microbial alterations complicate the pathogenesis of AD further. Mouse models are a powerful tool to analyze such intricate pathophysiology of AD, with a caution that anatomy and immunology of the skin differ between human subjects and mice. Here we review recent understanding of AD etiology obtained using mouse models, which address the epidermal barrier, skin microbiome, TH2 immune response, and pruritus.
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Affiliation(s)
- Saeko Nakajima
- Department of Dermatology, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Takashi Nomura
- Department of Dermatology, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - John Common
- Skin Research Institute of Singapore (SRIS), Singapore.
| | - Kenji Kabashima
- Department of Dermatology, Kyoto University Graduate School of Medicine, Kyoto, Japan; Skin Research Institute of Singapore (SRIS), Singapore; Singapore Immunology Network, A*STAR, Singapore.
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23
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Mast cells drive IgE-mediated disease but might be bystanders in many other inflammatory and neoplastic conditions. J Allergy Clin Immunol 2019; 144:S19-S30. [DOI: 10.1016/j.jaci.2019.07.017] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2018] [Revised: 06/11/2019] [Accepted: 07/08/2019] [Indexed: 01/05/2023]
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24
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Kwak EJ, Hong JY, Kim MN, Kim SY, Kim SH, Park CO, Kim KW, Lee CG, Elias JA, Jee HM, Sohn MH. Chitinase 3-like 1 drives allergic skin inflammation via Th2 immunity and M2 macrophage activation. Clin Exp Allergy 2019; 49:1464-1474. [PMID: 31397016 DOI: 10.1111/cea.13478] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2019] [Revised: 07/15/2019] [Accepted: 08/01/2019] [Indexed: 12/16/2022]
Abstract
BACKGROUND Atopic dermatitis (AD) is a chronic inflammatory skin disorder characterized by defective skin barrier and Th2 immune responses. Chitinase 3-like 1 (CHI3L1), also known as breast regression protein 39 (BRP-39) in mice and human homologue YKL-40, plays important roles in Th2 inflammation and allergen sensitization. CHI3L1 has been implicated in a variety of diseases including asthma characterized by inflammation, apoptosis and tissue remodelling, but its role in AD remains elusive. OBJECTIVE The aim of this study was to investigate the role of CHI3L1 in the development and progression of AD. RESULTS We investigated YKL-40 levels in the serum and skin of AD patients by ELISA and immunofluorescence, respectively. Using a murine model of AD induced by ovalbumin (OVA), we investigated Th2 immune responses, M2 macrophage activation and skin barrier gene expression using wild-type (WT) and BRP-39 null mutant (BRP-39-/- ) mice. YKL-40 level was significantly increased in serum of AD patients. In addition, both mRNA and protein expression levels of BRP-39 were higher in OVA-sensitized WT mice than in control mice. OVA-sensitized BRP-39-/- mice showed decreased epidermal thickness, lower total serum IgE, Th2 cytokine levels and CD4+ effector T cell populations than OVA-sensitized WT mice. Induction of BRP-39 was dominant in dermal macrophages. BRP-39 deficiency was found to be involved in M2 macrophage activation. Consistently, the YKL-40 level in the skin of AD patients was higher than in normal subjects and it was expressed in dermal macrophages. BRP-39 deficiency attenuated dysregulation of skin barrier and tight junction genes. CONCLUSIONS AND CLINICAL RELEVANCE These findings demonstrate that CHI3L1 mediates the development of AD induced by OVA, affecting Th2 inflammation, M2 macrophage activation and skin barrier function.
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Affiliation(s)
- Eun Ji Kwak
- Department of Pediatrics, Severance Hospital, Institute of Allergy, Institute for Immunology and Immunological Diseases, Brain Korea 21 PLUS Project for Medical Science, Yonsei University College of Medicine, Seoul, Korea
| | - Jung Yeon Hong
- Department of Pediatrics, Severance Hospital, Institute of Allergy, Institute for Immunology and Immunological Diseases, Brain Korea 21 PLUS Project for Medical Science, Yonsei University College of Medicine, Seoul, Korea
| | - Mi Na Kim
- Department of Pediatrics, Severance Hospital, Institute of Allergy, Institute for Immunology and Immunological Diseases, Brain Korea 21 PLUS Project for Medical Science, Yonsei University College of Medicine, Seoul, Korea
| | - Soo Yeon Kim
- Department of Pediatrics, Severance Hospital, Institute of Allergy, Institute for Immunology and Immunological Diseases, Brain Korea 21 PLUS Project for Medical Science, Yonsei University College of Medicine, Seoul, Korea
| | - Seo Hyeong Kim
- Department of Dermatology and Cutaneous Biology Research Institute, Yonsei University College of Medicine, Seoul, Korea
| | - Chang Ook Park
- Department of Dermatology and Cutaneous Biology Research Institute, Yonsei University College of Medicine, Seoul, Korea
| | - Kyung Won Kim
- Department of Pediatrics, Severance Hospital, Institute of Allergy, Institute for Immunology and Immunological Diseases, Brain Korea 21 PLUS Project for Medical Science, Yonsei University College of Medicine, Seoul, Korea
| | - Chun Geun Lee
- Molecular Microbiology and Immunology, Brown University, Providence, RI, USA.,Department of Internal Medicine, Hanyang University, Seoul, Korea
| | - Jack A Elias
- Molecular Microbiology and Immunology, Brown University, Providence, RI, USA
| | - Hye Mi Jee
- Department of Pediatrics, CHA Bundang Medical Center, CHA University School of Medicine, Seongnam, Korea
| | - Myung Hyun Sohn
- Department of Pediatrics, Severance Hospital, Institute of Allergy, Institute for Immunology and Immunological Diseases, Brain Korea 21 PLUS Project for Medical Science, Yonsei University College of Medicine, Seoul, Korea
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25
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Rahrig S, Dettmann JM, Brauns B, Lorenz VN, Buhl T, Kezic S, Elias PM, Weidinger S, Mempel M, Schön MP, Braun A. Transient epidermal barrier deficiency and lowered allergic threshold in filaggrin-hornerin (FlgHrnr -/- ) double-deficient mice. Allergy 2019; 74:1327-1339. [PMID: 30828807 DOI: 10.1111/all.13756] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2018] [Revised: 12/19/2018] [Accepted: 01/09/2019] [Indexed: 12/28/2022]
Abstract
BACKGROUND Filaggrin (Flg) and hornerin (Hrnr) share similar structural and functional features. Both proteins have been implicated as essential proteins for skin barrier maintenance. Loss-of-function mutations of these genes constitute a risk factor for atopic dermatitis and eczema-related asthma. Furthermore, both FLG and HRNR protein levels are downregulated in patients with atopic dermatitis. Thus, mice deficient for Flg and Hrnr provide a novel model to study skin barrier impairment and the susceptibility for cutaneous inflammation. METHODS By using appropriate targeting vectors and breeding strategies, we established a homozygous FlgHrnr double-deficient (FlgHrnr-/- ) mouse model lacking both genes including the intergenomic sequence. RESULTS Neonates appeared normal, but developed a transient scaly phenotype with overall flaky appearance, but no overt skin phenotype in adulthood, thereby reflecting a subclinical barrier defect seen in humans. Structurally, FlgHrnr-/- mice displayed a markedly reduced granular layer and a condensed cornified layer. Functionally, FlgHrnr-/- mice showed permeability abnormalities and metabolic aberrations regarding the production of natural moisturizing factors (NMFs) in the stratum corneum. Surprisingly, although the immune system revealed no aberrations under steady-state conditions, FlgHrnr-/- mice are predisposed to mount an allergic contact dermatitis, especially at hapten threshold levels eliciting allergic reactions. CONCLUSIONS Together, our FlgHrnr-/- mouse model nicely reflects the epicutaneous sensitization susceptibilities and inflammatory reactions to environmental insults in humans with impaired skin barrier functions.
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Affiliation(s)
- Sebastian Rahrig
- Department of Dermatology, Venereology, and Allergology University Medical Center, Georg August University Göttingen Germany
| | - Judith M. Dettmann
- Department of Dermatology, Venereology, and Allergology University Medical Center, Georg August University Göttingen Germany
| | - Birka Brauns
- Department of Dermatology and Venereology University Medical Center Rostock Germany
| | - Verena N. Lorenz
- Department of Dermatology, Venereology, and Allergology University Medical Center, Georg August University Göttingen Germany
| | - Timo Buhl
- Department of Dermatology, Venereology, and Allergology University Medical Center, Georg August University Göttingen Germany
| | - Sanja Kezic
- Academic Medical Center Coronel Institute of Occupational Health Amsterdam the Netherlands
| | - Peter M. Elias
- Department of Dermatology University of California San Francisco California
| | - Stephan Weidinger
- Department of Dermatology, Venereology and Allergy University Hospital Schleswig‐Holstein Kiel Germany
| | - Martin Mempel
- Department of Dermatology, Venereology, and Allergology University Medical Center, Georg August University Göttingen Germany
- Lower Saxony Institute of Occupational Dermatology University Medical Center Göttingen and University of Osnabrück Göttingen Germany
| | - Michael P. Schön
- Department of Dermatology, Venereology, and Allergology University Medical Center, Georg August University Göttingen Germany
- Lower Saxony Institute of Occupational Dermatology University Medical Center Göttingen and University of Osnabrück Göttingen Germany
| | - Andrea Braun
- Department of Dermatology, Venereology, and Allergology University Medical Center, Georg August University Göttingen Germany
- Lower Saxony Institute of Occupational Dermatology University Medical Center Göttingen and University of Osnabrück Göttingen Germany
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26
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Hoshino T, Yamashita SI, Suzuki N, Baba A, Ogawa S, Izumi T. Impact of Acacia bark extract tablets on the skin of healthy humans: a randomized, double-blind, placebo-controlled study. Biosci Biotechnol Biochem 2019; 83:538-550. [DOI: 10.1080/09168451.2018.1547626] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
ABSTRACT
This study investigated the effects of proanthocyanidins derived from Acacia (Acacia mearnsii) bark extract in healthy Japanese adult subjects experiencing uncomfortable skin symptoms. All subjects were randomly allocated into two groups (n = 33 each) using a computerized random-number generator. The subjects received either Acacia bark extract tablets or placebo for 8 weeks. Evaluations included water content in the stratum corneum, transepidermal water loss (TEWL), Skindex-16, dermatology life quality index (DLQI), visual analog scale for desire to scratch, and blood tests. At 4 weeks, the symptom/feeling score of DLQI, subjective symptoms related to uncomfortable skin, and the desire to scratch were significantly reduced in the intervention group than in the placebo group. At 8 weeks, the intervention group exhibited significantly lower TEWL on facial skin than that in the placebo group. In conclusion, the intake of Acacia bark extract tablets reduced TEWL and improved dry and uncomfortable skin.
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Affiliation(s)
| | | | - Naoko Suzuki
- R&D Department, ORTHOMEDICO Inc., Bunkyo-ku, Tokyo, Japan
| | - Asami Baba
- R&D Department, ORTHOMEDICO Inc., Bunkyo-ku, Tokyo, Japan
| | - Sosuke Ogawa
- Research & Development Division, Mimozax Co., Ltd., Hatsukaichi-city Hiroshima, Japan
| | - Tatsuya Izumi
- Department of dermatology, Hiroo Dermatology Clinic & Mentors Inc., Shibuya-ku, Tokyo, Japan
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27
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Ryu YS, Kang KA, Piao MJ, Ahn MJ, Yi JM, Hyun YM, Kim SH, Ko MK, Park CO, Hyun JW. Particulate matter induces inflammatory cytokine production via activation of NFκB by TLR5-NOX4-ROS signaling in human skin keratinocyte and mouse skin. Redox Biol 2019; 21:101080. [PMID: 30584981 PMCID: PMC6305701 DOI: 10.1016/j.redox.2018.101080] [Citation(s) in RCA: 91] [Impact Index Per Article: 18.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2018] [Revised: 12/10/2018] [Accepted: 12/13/2018] [Indexed: 01/17/2023] Open
Abstract
Particulate matter (PM) increases levels of pro-inflammatory cytokines, but its effects on the skin remain largely unknown. We investigated the signal transduction pathway and epigenetic regulatory mechanisms underlying cellular inflammation induced by PM with a diameter of ≤ 2.5 (PM2.5) in vitro and in vivo. PM2.5-treated skin keratinocytes produced various inflammatory cytokines, including IL-6. The binding of PM2.5 to TLR5 initiated intracellular signaling through MyD88, and led to the translocation of NFκB to the nucleus, where it bound the NFκB site within IL-6 promoter. Furthermore, PM2.5 induced a direct interaction between TLR5 and NOX4, and in turn induced the production of ROS and activated NFκB-IL-6 downstream, which was prevented by siRNA-mediated knockdown of NOX4 or antioxidant treatment. Furthermore, expression of TLR5, MyD88, NOX4, phospho-NFκB, and IL-6 was increased in skin tissue of PM2.5-treated flaky tail mice. PM2.5-induced increased transcription of IL-6 was regulated via DNA methylation and histone methylation by epigenetic modification; the binding of DNA demethylase and histone methyltransferase to the IL-6 promoter regions resulted in increased IL-6 mRNA expression. Our findings provide deep insight into the pathogenesis of PM2.5 exposure and can be used as a therapeutic strategy to treat inflammatory skin diseases caused by PM2.5 exposure.
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Affiliation(s)
- Yea Seong Ryu
- Department of Biochemistry, Jeju National University School of Medicine, Jeju 63243, Republic of Korea
| | - Kyoung Ah Kang
- Department of Biochemistry, Jeju National University School of Medicine, Jeju 63243, Republic of Korea
| | - Mei Jing Piao
- Department of Biochemistry, Jeju National University School of Medicine, Jeju 63243, Republic of Korea
| | - Mee Jung Ahn
- Laboratory of Veterinary Anatomy, College of Veterinary Medicine, Jeju National University, Jeju 63243, Republic of Korea
| | - Joo Mi Yi
- Department of Microbiology and Immunology, Inje University College of Medicine, Busan 47392, Republic of Korea
| | - Young-Min Hyun
- Department of Anatomy, Yonsei University College of Medicine, Seoul 03722, Republic of Korea
| | - Seo Hyeong Kim
- Department of Dermatology & Cutaneous Biology Research Institute, Yonsei University College of Medicine, Seoul 03722, Republic of Korea
| | - Min Kyung Ko
- Department of Dermatology & Cutaneous Biology Research Institute, Yonsei University College of Medicine, Seoul 03722, Republic of Korea
| | - Chang Ook Park
- Department of Dermatology & Cutaneous Biology Research Institute, Yonsei University College of Medicine, Seoul 03722, Republic of Korea
| | - Jin Won Hyun
- Department of Biochemistry, Jeju National University School of Medicine, Jeju 63243, Republic of Korea.
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28
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Petersen TH, Jee MH, Gadsbøll AØ, Schmidt JD, Sloth JJ, Sonnenberg GF, Geisler C, Thyssen JP, Bonefeld CM. Mice with epidermal filaggrin deficiency show increased immune reactivity to nickel. Contact Dermatitis 2018; 80:139-148. [DOI: 10.1111/cod.13153] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2018] [Revised: 09/26/2018] [Accepted: 09/27/2018] [Indexed: 02/01/2023]
Affiliation(s)
- Trine H. Petersen
- Department of Immunology and Microbiology, Faculty of Health and Medical SciencesUniversity of Copenhagen Copenhagen Denmark
| | - Mia H. Jee
- Department of Immunology and Microbiology, Faculty of Health and Medical SciencesUniversity of Copenhagen Copenhagen Denmark
- Department of Dermatology and AllergyNational Allergy Research Centre, Copenhagen University Hospital Gentofte Hellerup Denmark
| | - Anne‐Sofie Ø. Gadsbøll
- Department of Immunology and Microbiology, Faculty of Health and Medical SciencesUniversity of Copenhagen Copenhagen Denmark
| | - Jonas D. Schmidt
- Department of Immunology and Microbiology, Faculty of Health and Medical SciencesUniversity of Copenhagen Copenhagen Denmark
| | - Jens J. Sloth
- National Food InstituteTechnical University of Denmark Kongens Lyngby Denmark
| | | | - Carsten Geisler
- Department of Immunology and Microbiology, Faculty of Health and Medical SciencesUniversity of Copenhagen Copenhagen Denmark
| | - Jacob P. Thyssen
- Department of Dermatology and AllergyNational Allergy Research Centre, Copenhagen University Hospital Gentofte Hellerup Denmark
| | - Charlotte M. Bonefeld
- Department of Immunology and Microbiology, Faculty of Health and Medical SciencesUniversity of Copenhagen Copenhagen Denmark
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29
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Barr TP, Garzia C, Guha S, Fletcher EK, Nguyen N, Wieschhaus AJ, Ferrer L, Covic L, Kuliopulos A. PAR2 Pepducin-Based Suppression of Inflammation and Itch in Atopic Dermatitis Models. J Invest Dermatol 2018; 139:412-421. [PMID: 30287285 DOI: 10.1016/j.jid.2018.08.019] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2018] [Revised: 08/09/2018] [Accepted: 08/12/2018] [Indexed: 02/06/2023]
Abstract
PAR2 has been proposed to contribute to lesion formation and intense itch in atopic dermatitis. Here, we tested the ability of a cell-penetrating pepducin, PZ-235, to mitigate the potentially deleterious effects of PAR2 in models of atopic dermatitis. PZ-235 significantly inhibited PAR2-mediated expression of inflammatory factors NF-κB, TSLP, TNF-α, and differentiation marker K10 by 94%-98% (P < 0.001) in human keratinocytes and suppressed IL-4 and IL-13 by 68%-83% (P < 0.05) in mast cells. In delayed pepducin treatment models of oxazolone- and DNFB-induced dermatitis, PZ-235 significantly attenuated skin thickening by 43%-100% (P < 0.01) and leukocyte crusting by 57% (P < 0.05), and it inhibited ex vivo chemotaxis of leukocytes toward PAR2 agonists. Daily PZ-235 treatment of filaggrin-deficient mice exposed to dust mite allergens for 8 weeks significantly suppressed total leukocyte and T-cell infiltration by 50%-68%; epidermal thickness by 60%-77%; and skin thickening, scaling, excoriation, and total lesion severity score by 46%-56%. PZ-235 significantly reduced itching caused by wasp venom peptide degranulation of mast cells in mice by 51% (P < 0.05), which was comparable to the protective effects conferred by PAR2 deficiency. Taken together, these results suggest that a PAR2 pepducin may confer broad therapeutic benefits as a disease-modifying treatment for atopic dermatitis and itch.
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Affiliation(s)
- Travis P Barr
- Center of Hemostasis and Thrombosis Research, Tufts Medical Center, Department of Medicine, Tufts University School of Medicine, Boston, Massachusetts, USA
| | - Chris Garzia
- Center of Hemostasis and Thrombosis Research, Tufts Medical Center, Department of Medicine, Tufts University School of Medicine, Boston, Massachusetts, USA
| | - Srijoy Guha
- Center of Hemostasis and Thrombosis Research, Tufts Medical Center, Department of Medicine, Tufts University School of Medicine, Boston, Massachusetts, USA
| | - Elizabeth K Fletcher
- Center of Hemostasis and Thrombosis Research, Tufts Medical Center, Department of Medicine, Tufts University School of Medicine, Boston, Massachusetts, USA
| | - Nga Nguyen
- Center of Hemostasis and Thrombosis Research, Tufts Medical Center, Department of Medicine, Tufts University School of Medicine, Boston, Massachusetts, USA
| | - Adam J Wieschhaus
- Center of Hemostasis and Thrombosis Research, Tufts Medical Center, Department of Medicine, Tufts University School of Medicine, Boston, Massachusetts, USA
| | - Lluis Ferrer
- Department of Dermatology, Tufts Cummings School of Veterinary Medicine, North Grafton, Massachusetts, USA
| | - Lidija Covic
- Center of Hemostasis and Thrombosis Research, Tufts Medical Center, Department of Medicine, Tufts University School of Medicine, Boston, Massachusetts, USA
| | - Athan Kuliopulos
- Center of Hemostasis and Thrombosis Research, Tufts Medical Center, Department of Medicine, Tufts University School of Medicine, Boston, Massachusetts, USA.
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30
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31
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Jee MH, Johansen JD, Buus TB, Petersen TH, Gadsbøll ASØ, Woetmann A, Ødum N, Thyssen JP, White AJ, Anderson G, Geisler C, Bonefeld CM. Increased Production of IL-17A-Producing γδ T Cells in the Thymus of Filaggrin-Deficient Mice. Front Immunol 2018; 9:988. [PMID: 29867965 PMCID: PMC5953325 DOI: 10.3389/fimmu.2018.00988] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2017] [Accepted: 04/20/2018] [Indexed: 01/07/2023] Open
Abstract
Mutations in the filaggrin gene (Flg) are associated with increased systemic levels of Th17 cells and increased IL-17A production following antigen exposure in both humans and mice. In addition to Th17 cells, γδ T cells can produce IL-17A. The differentiation of γδ T cells to either IFNγ or IL-17A-producing (γδT17) cells is mainly determined in the thymus. Interestingly, it has been reported that filaggrin is expressed in the Hassall bodies in the human thymic medulla. However, whether filaggrin affects γδ T cell development is not known. Here, we show that filaggrin-deficient flaky tail (ft/ft) mice have an increased number of γδT17 cells in the spleen, epidermis, and thymus compared to wild-type (WT) mice. We demonstrate that filaggrin is expressed in the mouse thymic medulla and that blocking the egress of cells from the thymus results in accumulation of Vγ2+ γδT17 cells in the thymus of adult ft/ft mice. Finally, we find increased T cell receptor expression levels on γδ T cells and increased levels of IL-6 and IL-23 in the thymus of ft/ft mice. These findings demonstrate that filaggrin is expressed in the mouse thymic medulla and that production of Vγ2+ γδT17 cells is dysregulated in filaggrin-deficient ft/ft mice.
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Affiliation(s)
- Mia Hamilton Jee
- Department of Immunology and Microbiology, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark.,National Allergy Research Centre, Department of Dermato-Allergology, Copenhagen University Hospital Gentofte, Hellerup, Denmark
| | - Jeanne Duus Johansen
- National Allergy Research Centre, Department of Dermato-Allergology, Copenhagen University Hospital Gentofte, Hellerup, Denmark
| | - Terkild Brink Buus
- Department of Immunology and Microbiology, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Trine Hilkjær Petersen
- Department of Immunology and Microbiology, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Anne-Sofie Østergaard Gadsbøll
- Department of Immunology and Microbiology, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Anders Woetmann
- Department of Immunology and Microbiology, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Niels Ødum
- Department of Immunology and Microbiology, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Jacob Pontoppidan Thyssen
- National Allergy Research Centre, Department of Dermato-Allergology, Copenhagen University Hospital Gentofte, Hellerup, Denmark
| | - Andrea Jane White
- Institute of Immunology and Immunotherapy, University of Birmingham, Birmingham, United Kingdom
| | - Graham Anderson
- Institute of Immunology and Immunotherapy, University of Birmingham, Birmingham, United Kingdom
| | - Carsten Geisler
- Department of Immunology and Microbiology, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Charlotte Menné Bonefeld
- Department of Immunology and Microbiology, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
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32
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Han H, Roan F, Ziegler SF. The atopic march: current insights into skin barrier dysfunction and epithelial cell-derived cytokines. Immunol Rev 2018; 278:116-130. [PMID: 28658558 DOI: 10.1111/imr.12546] [Citation(s) in RCA: 179] [Impact Index Per Article: 29.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Atopic dermatitis often precedes the development of other atopic diseases. The atopic march describes this temporal relationship in the natural history of atopic diseases. Although the pathophysiological mechanisms that underlie this relationship are poorly understood, epidemiological and genetic data have suggested that the skin might be an important route of sensitization to allergens. Animal models have begun to elucidate how skin barrier defects can lead to systemic allergen sensitization. Emerging data now suggest that epithelial cell-derived cytokines such as thymic stromal lymphopoietin (TSLP), IL-33, and IL-25 may drive the progression from atopic dermatitis to asthma and food allergy. This review focuses on current concepts of the role of skin barrier defects and epithelial cell-derived cytokines in the initiation and maintenance of allergic inflammation and the atopic march.
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Affiliation(s)
- Hongwei Han
- Immunology Program, Benaroya Research Institute, Seattle, WA, USA
| | - Florence Roan
- Immunology Program, Benaroya Research Institute, Seattle, WA, USA
| | - Steven F Ziegler
- Immunology Program, Benaroya Research Institute, Seattle, WA, USA.,Department of Immunology, University of Washington School of Medicine, Seattle, WA, USA
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33
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Nomura T, Honda T, Kabashima K. Multipolarity of cytokine axes in the pathogenesis of atopic dermatitis in terms of age, race, species, disease stage and biomarkers. Int Immunol 2018. [DOI: 10.1093/intimm/dxy015] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Affiliation(s)
- Takashi Nomura
- Department of Dermatology, Kyoto University Graduate School of Medicine, Sakyo-ku, Kyoto 606-8326, Japan
| | - Tetsuya Honda
- Department of Dermatology, Kyoto University Graduate School of Medicine, Sakyo-ku, Kyoto 606-8326, Japan
| | - Kenji Kabashima
- Department of Dermatology, Kyoto University Graduate School of Medicine, Sakyo-ku, Kyoto 606-8326, Japan
- Singapore Immunology Network (SIgN) and Institute of Medical Biology (IMB), Agency for Science, Technology and Research (A*STAR), Biopolis, Singapore
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34
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Löwa A, Jevtić M, Gorreja F, Hedtrich S. Alternatives to animal testing in basic and preclinical research of atopic dermatitis. Exp Dermatol 2018; 27:476-483. [PMID: 29356091 DOI: 10.1111/exd.13498] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/12/2018] [Indexed: 12/29/2022]
Abstract
Atopic dermatitis (AD) is a chronic inflammatory skin disease of increasing prevalence, especially in industrialized countries. Roughly 25% of the children and 1%-3% of adults are affected. Although significant progress has been made in the understanding of the pathogenesis of AD, many aspects remain poorly understood. Moreover, there is a pressing need for improved therapeutic options. Studies to elucidate the pathophysiological pathways of AD and to identify novel therapeutic targets over the last few decades have been conducted almost exclusively in animal models. However, in vitro approaches such as 3D skin disease models have recently emerged due to an increasing awareness of distinct interspecies-related differences that hamper the effective translation of results from animal models to humans. In addition, there is growing political and social pressure to develop alternatives to animal models according to the 3Rs principle (reduction, refinement and replacement of animal models).
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Affiliation(s)
- Anna Löwa
- Institute for Pharmacy, Pharmacology & Toxicology, Freie Universität Berlin, Berlin, Germany
| | - Marijana Jevtić
- Institute for Pharmacy, Pharmacology & Toxicology, Freie Universität Berlin, Berlin, Germany
| | - Frida Gorreja
- Örebro University, School of Health and Medical Sciences, Örebro University, Orebro, Sweden
| | - Sarah Hedtrich
- Institute for Pharmacy, Pharmacology & Toxicology, Freie Universität Berlin, Berlin, Germany
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35
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Jang H, Myung H, Lee J, Myung JK, Jang WS, Lee SJ, Bae CH, Kim H, Park S, Shim S. Impaired Skin Barrier Due to Sebaceous Gland Atrophy in the Latent Stage of Radiation-Induced Skin Injury: Application of Non-Invasive Diagnostic Methods. Int J Mol Sci 2018; 19:ijms19010185. [PMID: 29316698 PMCID: PMC5796134 DOI: 10.3390/ijms19010185] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2017] [Revised: 01/01/2018] [Accepted: 01/03/2018] [Indexed: 12/18/2022] Open
Abstract
Radiation-induced skin injury can take the form of serious cutaneous damage and have specific characteristics. Asymptomatic periods are classified as the latent stage. The skin barrier plays a critical role in the modulation of skin permeability and hydration and protects the body against a harsh external environment. However, an analysis on skin barrier dysfunction against radiation exposure in the latent stage has not been conducted. Thus, we investigated whether the skin barrier is impaired by irradiation in the latent stage and aimed to identify the molecules involved in skin barrier dysfunction. We analyzed skin barrier function and its components in SKH1 mice that received 20 and 40 Gy local irradiation. Increased transepidermal water loss and skin pH were observed in the latent stage of the irradiated skin. Skin barrier components, such as structural proteins and lipid synthesis enzymes in keratinocyte, increased in the irradiated group. Interestingly, we noted sebaceous gland atrophy and increased serine protease and inflammatory cytokines in the irradiated skin during the latent period. This finding indicates that the main factor of skin barrier dysfunction in the latent stage of radiation-induced skin injury is sebaceous gland deficiency, which could be an intervention target for skin barrier impairment.
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Affiliation(s)
- Hyosun Jang
- Laboratory of Radiation Exposure & Therapeutics, National Radiation Emergency Medical Center, Korea Institute of Radiological and Medical Sciences, 75 Nowon-ro, Nowon-gu, Seoul 01812, Korea.
| | - Hyunwook Myung
- Laboratory of Radiation Exposure & Therapeutics, National Radiation Emergency Medical Center, Korea Institute of Radiological and Medical Sciences, 75 Nowon-ro, Nowon-gu, Seoul 01812, Korea.
| | - Janet Lee
- Laboratory of Radiation Exposure & Therapeutics, National Radiation Emergency Medical Center, Korea Institute of Radiological and Medical Sciences, 75 Nowon-ro, Nowon-gu, Seoul 01812, Korea.
| | - Jae Kyung Myung
- Laboratory of Radiation Exposure & Therapeutics, National Radiation Emergency Medical Center, Korea Institute of Radiological and Medical Sciences, 75 Nowon-ro, Nowon-gu, Seoul 01812, Korea.
- Department of Pathology, Korea Cancer Center Hospital, Korea Institute of Radiological and Medical Sciences, 75 Nowon-ro, Nowon-gu, Seoul 01812, Korea.
| | - Won-Suk Jang
- Laboratory of Radiation Exposure & Therapeutics, National Radiation Emergency Medical Center, Korea Institute of Radiological and Medical Sciences, 75 Nowon-ro, Nowon-gu, Seoul 01812, Korea.
| | - Sun-Joo Lee
- Laboratory of Radiation Exposure & Therapeutics, National Radiation Emergency Medical Center, Korea Institute of Radiological and Medical Sciences, 75 Nowon-ro, Nowon-gu, Seoul 01812, Korea.
| | - Chang-Hwan Bae
- Laboratory of Radiation Exposure & Therapeutics, National Radiation Emergency Medical Center, Korea Institute of Radiological and Medical Sciences, 75 Nowon-ro, Nowon-gu, Seoul 01812, Korea.
| | - Hyewon Kim
- Laboratory of Radiation Exposure & Therapeutics, National Radiation Emergency Medical Center, Korea Institute of Radiological and Medical Sciences, 75 Nowon-ro, Nowon-gu, Seoul 01812, Korea.
| | - Sunhoo Park
- Laboratory of Radiation Exposure & Therapeutics, National Radiation Emergency Medical Center, Korea Institute of Radiological and Medical Sciences, 75 Nowon-ro, Nowon-gu, Seoul 01812, Korea.
- Department of Pathology, Korea Cancer Center Hospital, Korea Institute of Radiological and Medical Sciences, 75 Nowon-ro, Nowon-gu, Seoul 01812, Korea.
| | - Sehwan Shim
- Laboratory of Radiation Exposure & Therapeutics, National Radiation Emergency Medical Center, Korea Institute of Radiological and Medical Sciences, 75 Nowon-ro, Nowon-gu, Seoul 01812, Korea.
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36
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Malik K, Ungar B, Garcet S, Dutt R, Dickstein D, Zheng X, Xu H, Estrada YD, Suárez-Fariñas M, Shemer A, Krueger JG, Guttman-Yassky E. Dust mite induces multiple polar T cell axes in human skin. Clin Exp Allergy 2017; 47:1648-1660. [DOI: 10.1111/cea.13040] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2017] [Revised: 08/11/2017] [Accepted: 08/18/2017] [Indexed: 12/18/2022]
Affiliation(s)
- K. Malik
- Department of Dermatology; Icahn School of Medicine at Mount Sinai; New York NY USA
- Laboratory for Investigative Dermatology; The Rockefeller University; New York NY USA
| | - B. Ungar
- Department of Dermatology; Icahn School of Medicine at Mount Sinai; New York NY USA
- Laboratory for Investigative Dermatology; The Rockefeller University; New York NY USA
| | - S. Garcet
- Laboratory for Investigative Dermatology; The Rockefeller University; New York NY USA
| | - R. Dutt
- Department of Dermatology; Icahn School of Medicine at Mount Sinai; New York NY USA
| | - D. Dickstein
- Department of Dermatology; Icahn School of Medicine at Mount Sinai; New York NY USA
| | - X. Zheng
- Laboratory for Investigative Dermatology; The Rockefeller University; New York NY USA
| | - H. Xu
- Department of Dermatology; Icahn School of Medicine at Mount Sinai; New York NY USA
| | - Y. D. Estrada
- Department of Dermatology; Icahn School of Medicine at Mount Sinai; New York NY USA
| | - M. Suárez-Fariñas
- Laboratory for Investigative Dermatology; The Rockefeller University; New York NY USA
- Department of Population Health Science and Policy; Icahn School of Medicine at Mount Sinai; New York NY USA
- Department of Genetics and Genomics Science; Icahn School of Medicine at Mount Sinai; New York NY USA
- Icahn Institute for Genomics and Multiscale Biology; Icahn School of Medicine at Mount Sinai; New York NY USA
| | - A. Shemer
- The Department of Dermatology; Tel-Hashomer; Tel-Aviv Israel
| | - J. G. Krueger
- Laboratory for Investigative Dermatology; The Rockefeller University; New York NY USA
| | - E. Guttman-Yassky
- Department of Dermatology; Icahn School of Medicine at Mount Sinai; New York NY USA
- Laboratory for Investigative Dermatology; The Rockefeller University; New York NY USA
- Department of Genetics and Genomics Science; Icahn School of Medicine at Mount Sinai; New York NY USA
- The Immunology Institute; Icahn School of Medicine at Mount Sinai; New York NY USA
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37
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Nakai K, He YY, Nishiyama F, Naruse F, Haba R, Kushida Y, Katsuki N, Moriue T, Yoneda K, Kubota Y. IL-17A induces heterogeneous macrophages, and it does not alter the effects of lipopolysaccharides on macrophage activation in the skin of mice. Sci Rep 2017; 7:12473. [PMID: 28963556 PMCID: PMC5622065 DOI: 10.1038/s41598-017-12756-y] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2017] [Accepted: 09/14/2017] [Indexed: 01/09/2023] Open
Abstract
Macrophages are central to inflammatory response and become polarized towards the M1 or M2 states upon activation by immunostimulants. In this study, we investigated the effects of lipopolysaccharides (LPS) and interleukin (IL)-17A on the activation of macrophages in in vivo mouse skin. We examined whether macrophages are activated in the skin of imiquimod (IMQ)-treated mice, a model for IL-17A-induced psoriasis-like skin inflammation, and flaky-tail (Flgft) mice, a model for IL-17A-induced chronic atopic dermatitis-like skin inflammation. LPS and IL-17A independently increased the expression levels of iNOS, CX3CR1, CD206, phospho-STAT1 and phospho-STAT3 proteins in the skin of B6 mice, and the effects of LPS was not altered by IL-17A. The expression levels of these proteins were increased in the skin of IMQ-treated and Flgft mice. IL-17A neutralization increased the expressions of iNOS and phospho-STAT1 in the IMQ-treated skin, but it decreased the expressions of CD206 and phospho-STAT3 proteins in the skin of Flgft mice, suggesting that macrophages to change from the M2 to the M1 state in the skin of these mice. These results suggest that IL-17A is involved in the activation of macrophages that are in the process of adopting the heterogeneous profiles of both the M1 and M2 states.
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Affiliation(s)
- Kozo Nakai
- Department of Dermatology, Kagawa University, Kagawa, Japan.
| | - Yu-Ying He
- Department of Medicine, Section of Dermatology, University of Chicago, Chicago, USA
| | | | - Fukiko Naruse
- Department of Dermatology, Kagawa University, Kagawa, Japan
| | - Reiji Haba
- Department of Diagnostic Pathology, Kagawa University, Kagawa, Japan
| | - Yoshio Kushida
- Department of Diagnostic Pathology, Kagawa University, Kagawa, Japan
| | - Naomi Katsuki
- Department of Diagnostic Pathology, Kagawa University, Kagawa, Japan
| | - Tetsuya Moriue
- Department of Dermatology, Kagawa University, Kagawa, Japan
| | - Kozo Yoneda
- Department of Pharmacology, Osaka Ohtani University, Osaka, Japan
| | - Yasuo Kubota
- Department of Dermatology, Kagawa University, Kagawa, Japan
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38
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Martel BC, Lovato P, Bäumer W, Olivry T. Translational Animal Models of Atopic Dermatitis for Preclinical Studies. THE YALE JOURNAL OF BIOLOGY AND MEDICINE 2017; 90:389-402. [PMID: 28955179 PMCID: PMC5612183] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
There is a medical need to develop new treatments for patients suffering from atopic dermatitis (AD). To improve the discovery and testing of novel treatments, relevant animal models for AD are needed. Generally, these animal models mimic different aspects of the pathophysiology of human AD, such as skin barrier defects and Th2 immune bias with additional Th1 and Th22, and in some populations Th17, activation. However, the pathomechanistic characterization and pharmacological validation of these animal models are generally incomplete. In this paper, we review animal models of AD in the context of preclinical use and their possible translation to the human disease. Most of these models use mice, but we will also critically evaluate dog models of AD, as increasing information on disease mechanism show their likely relevance for the human disease.
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Affiliation(s)
- Britta C. Martel
- LEO Pharma A/S, Ballerup, Denmark,Department of Clinical Sciences, College of Veterinary Medicine, North Carolina State University, Raleigh, NC, USA
| | | | - Wolfgang Bäumer
- Department of Molecular Biological Sciences, College of Veterinary Medicine, North Carolina State University, Raleigh, NC, USA,Comparative Medicine Institute, North Carolina State University, Raleigh, NC, USA
| | - Thierry Olivry
- Department of Clinical Sciences, College of Veterinary Medicine, North Carolina State University, Raleigh, NC, USA,Comparative Medicine Institute, North Carolina State University, Raleigh, NC, USA,To whom all correspondence should be addressed: Thierry Olivry, Department of Clinical Sciences, College of Veterinary Medicine, 1060 William Moore Drive, Raleigh, NC, 27607, E-mail:
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Kabashima K, Nomura T. Revisiting murine models for atopic dermatitis and psoriasis with multipolar cytokine axes. Curr Opin Immunol 2017; 48:99-107. [PMID: 28915378 DOI: 10.1016/j.coi.2017.08.010] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2017] [Revised: 07/18/2017] [Accepted: 08/16/2017] [Indexed: 12/18/2022]
Abstract
Atopic dermatitis (AD) and psoriasis are one of the common skin diseases. Animal models are a powerful tool to analyze these diseases, which are complicated by multiple cytokine pathways. However, many discrepancies between the human diseases and murine models have been noticed. Therefore, investigators should be aware of the differences between the murine AD models and human AD when translating murine data to human skin diseases. This review highlights the differences between the inflammatory profiles between murine models and human diseases focusing on AD and psoriasis.
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Affiliation(s)
- Kenji Kabashima
- Department of Dermatology, Kyoto University Graduate School of Medicine, 54 Shogoin-Kawahara, Sakyoku, Kyoto 606-8507, Japan; Singapore Immunology Network (SIgN) and Institute of Medical Biology, Agency for Science, Technology and Research (A*STAR), Biopolis, Singapore.
| | - Takashi Nomura
- Department of Dermatology, Kyoto University Graduate School of Medicine, 54 Shogoin-Kawahara, Sakyoku, Kyoto 606-8507, Japan
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Otsuka A, Nomura T, Rerknimitr P, Seidel JA, Honda T, Kabashima K. The interplay between genetic and environmental factors in the pathogenesis of atopic dermatitis. Immunol Rev 2017; 278:246-262. [DOI: 10.1111/imr.12545] [Citation(s) in RCA: 83] [Impact Index Per Article: 11.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Atsushi Otsuka
- Department of Dermatology; Kyoto University Graduate School of Medicine; Kyoto Japan
| | - Takashi Nomura
- Department of Dermatology; Kyoto University Graduate School of Medicine; Kyoto Japan
| | - Pawinee Rerknimitr
- Department of Dermatology; Kyoto University Graduate School of Medicine; Kyoto Japan
- Division of Dermatology; Department of Medicine; Faculty of Medicine, Allergy and Clinical Immunology Research Group; Chulalongkorn University; Bangkok Thailand
| | - Judith A. Seidel
- Department of Dermatology; Kyoto University Graduate School of Medicine; Kyoto Japan
| | - Tetsuya Honda
- Department of Dermatology; Kyoto University Graduate School of Medicine; Kyoto Japan
| | - Kenji Kabashima
- Department of Dermatology; Kyoto University Graduate School of Medicine; Kyoto Japan
- Singapore Immunology Network (SIgN) and Institute of Medical Biology; Agency for Science, Technology and Research (A*STAR); Biopolis; Singapore
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Halling-Overgaard AS, Kezic S, Jakasa I, Engebretsen K, Maibach H, Thyssen J. Skin absorption through atopic dermatitis skin: a systematic review. Br J Dermatol 2017; 177:84-106. [DOI: 10.1111/bjd.15065] [Citation(s) in RCA: 73] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/22/2016] [Indexed: 02/06/2023]
Affiliation(s)
- A.-S. Halling-Overgaard
- Department of Dermatology and Allergy; Herlev and Gentofte Hospital; University of Copenhagen; DK-2900 Hellerup Denmark
- National Allergy Research Centre; Herlev and Gentofte Hospital; University of Copenhagen; DK-2900 Hellerup Denmark
| | - S. Kezic
- Coronel Institute of Occupational Health; Academic Medical Centre; Amsterdam the Netherlands
| | - I. Jakasa
- Laboratory for Analytical Chemistry; Department of Chemistry and Biochemistry; Faculty of Food Technology and Biotechnology; University of Zagreb; Zagreb Croatia
| | - K.A. Engebretsen
- Department of Dermatology and Allergy; Herlev and Gentofte Hospital; University of Copenhagen; DK-2900 Hellerup Denmark
- National Allergy Research Centre; Herlev and Gentofte Hospital; University of Copenhagen; DK-2900 Hellerup Denmark
| | - H. Maibach
- Department of Dermatology; University of California San Francisco; San Francisco CA U.S.A
| | - J.P. Thyssen
- Department of Dermatology and Allergy; Herlev and Gentofte Hospital; University of Copenhagen; DK-2900 Hellerup Denmark
- National Allergy Research Centre; Herlev and Gentofte Hospital; University of Copenhagen; DK-2900 Hellerup Denmark
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Rerknimitr P, Otsuka A, Nakashima C, Kabashima K. The etiopathogenesis of atopic dermatitis: barrier disruption, immunological derangement, and pruritus. Inflamm Regen 2017; 37:14. [PMID: 29259713 PMCID: PMC5725646 DOI: 10.1186/s41232-017-0044-7] [Citation(s) in RCA: 96] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2017] [Accepted: 04/12/2017] [Indexed: 02/07/2023] Open
Abstract
Atopic dermatitis (AD) is a common chronic skin inflammatory disorder characterized by recurrent eczema accompanied by an intractable itch that leads to an impaired quality of life. Extensive recent studies have shed light on the multifaceted pathogenesis of the disease. The complex interplay among skin barrier deficiency, immunological derangement, and pruritus contributes to the development, progression, and chronicity of the disease. Abnormalities in filaggrin, other stratum corneum constituents, and tight junctions induce and/or promote skin inflammation. This inflammation, in turn, can further deteriorate the barrier function by downregulating a myriad of essential barrier-maintaining molecules. Pruritus in AD, which may be due to hyperinnervation of the epidermis, increases pruritogens, and central sensitization compromises the skin integrity and promotes inflammation. There are unmet needs in the treatment of AD. Based on the detailed evidence available to date, certain disease mechanisms can be chosen as treatment targets. Numerous clinical trials of biological agents are currently being conducted and are expected to provide treatments for patients suffering from AD in the future. This review summarizes the etiopathogenesis of the disease and provides a rationale for choosing the novel targeted therapy that will be available in the future.
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Affiliation(s)
- Pawinee Rerknimitr
- Department of Dermatology, Kyoto University Graduate School of Medicine, 54 Shogoin-Kawara, Sakyo, Kyoto, 606-8507 Japan.,Division of Dermatology, Department of Medicine, Faculty of Medicine, Skin and Allergy Research Unit, Chulalongkorn University, Bangkok, Thailand
| | - Atsushi Otsuka
- Department of Dermatology, Kyoto University Graduate School of Medicine, 54 Shogoin-Kawara, Sakyo, Kyoto, 606-8507 Japan
| | - Chisa Nakashima
- Department of Dermatology, Kyoto University Graduate School of Medicine, 54 Shogoin-Kawara, Sakyo, Kyoto, 606-8507 Japan
| | - Kenji Kabashima
- Department of Dermatology, Kyoto University Graduate School of Medicine, 54 Shogoin-Kawara, Sakyo, Kyoto, 606-8507 Japan.,Singapore Immunology Network (SIgN) and Institute of Medical Biology, Agency for Science, Technology and Research (ASTAR), Biopolis, Singapore
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Phospholipase Cδ1 regulates p38 MAPK activity and skin barrier integrity. Cell Death Differ 2017; 24:1079-1090. [PMID: 28430185 DOI: 10.1038/cdd.2017.56] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2016] [Revised: 03/09/2017] [Accepted: 03/14/2017] [Indexed: 02/06/2023] Open
Abstract
Keratinocytes undergo a unique type of programmed cell death known as cornification, which leads to the formation of the stratum corneum (SC), the main physical barrier of the epidermis. A defective epidermal barrier is a hallmark of the two most common inflammatory skin disorders, psoriasis, and atopic dermatitis. However, the detailed molecular mechanisms of skin barrier formation are not yet fully understood. Here, we showed that downregulation of phospholipase C (PLC) δ1, a Ca2+-mobilizing and phosphoinositide-metabolizing enzyme abundantly expressed in the epidermis, impairs the barrier functions of the SC. PLCδ1 downregulation also impairs localization of tight junction proteins. Loss of PLCδ1 leads to a decrease in intracellular Ca2+ concentrations and nuclear factor of activated T cells activity, along with hyperactivation of p38 mitogen-activated protein kinase (MAPK) and inactivation of RhoA. Treatment with a p38 MAPK inhibitor reverses the barrier defects caused by PLCδ1 downregulation. Interestingly, this treatment also attenuates psoriasis-like skin inflammation in imiquimod-treated mice. These findings demonstrate that PLCδ1 is essential for epidermal barrier integrity. This study also suggests a possible link between PLCδ1 downregulation, p38 MAPK hyperactivation, and barrier defects in psoriasis-like skin inflammation.
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Mondoulet L, Wavrin S, Dioszeghy V, Dhelft V, Puteaux E, Ligouis M, Plaquet C, Dupont C, Benhamou PH. No impact of filaggrin deficiency on the efficacy of epicutaneous immunotherapy in a murine model. AIMS ALLERGY AND IMMUNOLOGY 2017. [DOI: 10.3934/allergy.2017.1.1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
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Allergic skin sensitization promotes eosinophilic esophagitis through the IL-33–basophil axis in mice. J Allergy Clin Immunol 2016; 138:1367-1380.e5. [DOI: 10.1016/j.jaci.2016.02.034] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2015] [Revised: 02/12/2016] [Accepted: 02/26/2016] [Indexed: 11/22/2022]
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Lee HJ, Lee NR, Kim BK, Jung M, Kim DH, Moniaga CS, Kabashima K, Choi EH. Acidification of stratum corneum prevents the progression from atopic dermatitis to respiratory allergy. Exp Dermatol 2016; 26:66-72. [DOI: 10.1111/exd.13144] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/29/2016] [Indexed: 12/12/2022]
Affiliation(s)
- Hae-Jin Lee
- Department of Dermatology; Cutaneous Biology Research Institute; Yonsei University College of Medicine; Seoul Korea
| | - Noo Ri Lee
- Department of Dermatology; Yonsei University Wonju College of Medicine; Wonju Korea
| | - Bo-Kyung Kim
- Department of Dermatology; Yonsei University Wonju College of Medicine; Wonju Korea
| | - Minyoung Jung
- Department of Dermatology; Yonsei University Wonju College of Medicine; Wonju Korea
| | - Dong Hye Kim
- Department of Dermatology; Yonsei University Wonju College of Medicine; Wonju Korea
| | - Catharina S. Moniaga
- Department of Dermatology; Kyoto University Graduate School of Medicine; Kyoto Japan
| | - Kenji Kabashima
- Department of Dermatology; Kyoto University Graduate School of Medicine; Kyoto Japan
| | - Eung Ho Choi
- Department of Dermatology; Yonsei University Wonju College of Medicine; Wonju Korea
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Major differences between human atopic dermatitis and murine models, as determined by using global transcriptomic profiling. J Allergy Clin Immunol 2016; 139:562-571. [PMID: 27702671 DOI: 10.1016/j.jaci.2016.08.029] [Citation(s) in RCA: 81] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2016] [Revised: 07/04/2016] [Accepted: 08/08/2016] [Indexed: 01/04/2023]
Abstract
BACKGROUND Atopic dermatitis (AD) is caused by a complex interplay between immune and barrier abnormalities. Murine models of AD are essential for preclinical assessments of new treatments. Although many models have been used to simulate AD, their transcriptomic profiles are not fully understood, and a comparison of these models with the human AD transcriptomic fingerprint is lacking. OBJECTIVE We sought to evaluate the transcriptomic profiles of 6 common murine models and determine how they relate to human AD skin. METHODS Transcriptomic profiling was performed by using microarrays and quantitative RT-PCR on biopsy specimens from NC/Nga, flaky tail, Flg-mutated, ovalbumin-challenged, oxazolone-challenged, and IL-23-injected mice. Gene expression data of patients with AD, psoriasis, and contact dermatitis were obtained from previous patient cohorts. Criteria of a fold change of 2 or greater and a false discovery rate of 0.05 or less were used for gene arrays. RESULTS IL-23-injected, NC/Nga, and oxazolone-challenged mice show the largest homology with our human meta-analysis-derived AD transcriptome (37%, 18%, 17%, respectively). Similar to human AD, robust TH1, TH2, and also TH17 activation are seen in IL-23-injected and NC/Nga mice, with similar but weaker inflammation in ovalbumin-challenged mice. Oxazolone-challenged mice show a TH1-centered reaction, and flaky tail mice demonstrate a strong TH17 polarization. Flg-mutated mice display filaggrin downregulation without significant inflammation. CONCLUSION No single murine model fully captures all aspects of the AD profile; instead, each model reflects different immune or barrier disease aspects. Overall, among the 6 murine models, IL-23-injected mice best simulate human AD; still, the translational focus of the investigation should determine which model is most applicable.
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48
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Modena BD, Dazy K, White AA. Emerging concepts: mast cell involvement in allergic diseases. Transl Res 2016; 174:98-121. [PMID: 26976119 DOI: 10.1016/j.trsl.2016.02.011] [Citation(s) in RCA: 78] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/12/2015] [Revised: 02/17/2016] [Accepted: 02/18/2016] [Indexed: 02/08/2023]
Abstract
In a process known as overt degranulation, mast cells can release all at once a diverse array of products that are preformed and present within cytoplasmic granules. This occurs typically within seconds of stimulation by environmental factors and allergens. These potent, preformed mediators (ie, histamine, heparin, serotonin, and serine proteases) are responsible for the acute symptoms experienced in allergic conditions such as allergic conjunctivitis, allergic rhinitis, allergy-induced asthma, urticaria, and anaphylaxis. Yet, there is reason to believe that the actions of mast cells are important when they are not degranulating. Mast cells release preformed mediators and inflammatory cytokines for periods after degranulation and even without degranulating at all. Mast cells are consistently seen at sites of chronic inflammation, including nonallergic inflammation, where they have the ability to temper inflammatory processes and shape tissue morphology. Mast cells can trigger actions and chemotaxis in other important immune cells (eg, eosinophils and the newly discovered type 2 innate lymphocytes) that then make their own contributions to inflammation and disease. In this review, we will discuss the many known and theorized contributions of mast cells to allergic diseases, focusing on several prototypical allergic respiratory and skin conditions: asthma, chronic rhinosinusitis, aspirin-exacerbated respiratory disease, allergic conjunctivitis, atopic dermatitis, and some of the more common medication hypersensitivity reactions. We discuss traditionally accepted roles that mast cells play in the pathogenesis of each of these conditions, but we also delve into new areas of discovery and research that challenge traditionally accepted paradigms.
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Affiliation(s)
- Brian D Modena
- Division of Allergy, Asthma and Immunology, Scripps Clinic, San Diego, Calif; Scripps Translational Science Institute, The Scripps Research Institute, La Jolla, Calif
| | - Kristen Dazy
- Division of Allergy, Asthma and Immunology, Scripps Clinic, San Diego, Calif
| | - Andrew A White
- Division of Allergy, Asthma and Immunology, Scripps Clinic, San Diego, Calif.
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Mizukawa Y, Doi T, Yamazaki Y, Kudo A, Shiohara T. Epidermal Neuromedin U Attenuates IgE-Mediated Allergic Skin Inflammation. PLoS One 2016; 11:e0160122. [PMID: 27463114 PMCID: PMC4963095 DOI: 10.1371/journal.pone.0160122] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2016] [Accepted: 06/13/2016] [Indexed: 11/18/2022] Open
Abstract
Although keratinocyte-derived neuropeptide neuromedin U (NMU) mediates the proinflammatory effects of innate-type mast cell activation, no information is available on the physiological roles. Here, to investigate the effects of NMU on IgE-mediated allergic skin inflammation, we determined whether IgE-mediated inflammation associated with severe scratching was induced in Nmu-/- mice administered repeated hapten applications to the ear or footpad. Dry skin was induced by targeted deletion of Nmu. Mice administered repeated hapten application developed IgE-mediated allergic inflammation characterized by severe scratching and increased serum IgE levels only when the ear, and not the footpad, was subjected to scratching, indicating that depletion of NMU from the epidermis alone does not drive such allergic inflammation. Thus, the susceptibility of Nmu-/- mice to allergic inflammation depends primarily on scratching dry skin. Further, allergic skin inflammation mediated by FcεRI cross-linking in Nmu-/-mice was inhibited by prior injection of NMU. These results indicate that NMU plays an important physiological role as a negative regulator during the late stage of IgE-mediated allergic skin inflammation.
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Affiliation(s)
- Yoshiko Mizukawa
- Department of Dermatology, Kyorin University School of Medicine, Mitaka, Tokyo, Japan
- * E-mail:
| | - Takaaki Doi
- Department of Dermatology, Kyorin University School of Medicine, Mitaka, Tokyo, Japan
| | - Yoshimi Yamazaki
- Department of Dermatology, Kyorin University School of Medicine, Mitaka, Tokyo, Japan
| | - Akihiko Kudo
- Department of Anatomy, Kyorin University School of Medicine, Mitaka, Tokyo, Japan
| | - Tetsuo Shiohara
- Department of Dermatology, Kyorin University School of Medicine, Mitaka, Tokyo, Japan
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Sehra S, Serezani APM, Ocaña JA, Travers JB, Kaplan MH. Mast Cells Regulate Epidermal Barrier Function and the Development of Allergic Skin Inflammation. J Invest Dermatol 2016; 136:1429-1437. [PMID: 27021404 DOI: 10.1016/j.jid.2016.03.019] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2015] [Revised: 02/15/2016] [Accepted: 03/06/2016] [Indexed: 11/30/2022]
Abstract
Atopic dermatitis is a chronic inflammatory skin disease characterized by infiltration of eosinophils, T helper cells, and mast cells. The role of mast cells in atopic dermatitis is not completely understood. To define the effects of mast cells on skin biology, we observed that mast cells regulate the homeostatic expression of epidermal differentiation complex and other skin genes. Decreased epidermal differentiation complex gene expression in mice that genetically lack mast cells (Kit(W-sh/W-sh) mice) is associated with increased uptake of protein antigens painted on the skin by dendritic cells (DCs) compared with similarly treated wild-type mice, suggesting a protective role for mast cells in exposure to nominal environmental allergens. To test this further, we crossed Kit(W-sh/W-sh) mice with signal transducer and activator of transcription 6 (i.e., Stat6) VT transgenic mice that develop spontaneous atopic dermatitis-like disease that is dependent on T helper cell 2 cytokines and is associated with high serum concentrations of IgE. We observed that Stat6VT × Kit(W-sh/W-sh) mice developed more frequent and more severe allergic skin inflammation than Stat6VT transgenic mice that had mast cells. Together, these studies suggest that mast cells regulate epidermal barrier function and have a potential protective role in the development of atopic dermatitis-like disease.
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Affiliation(s)
- Sarita Sehra
- Department of Pediatrics and Wells Center for Pediatric Research, Indiana University School of Medicine, Indianapolis, Indiana, USA
| | - Ana P M Serezani
- Department of Pediatrics and Wells Center for Pediatric Research, Indiana University School of Medicine, Indianapolis, Indiana, USA
| | - Jesus A Ocaña
- Department of Pharmacology and Toxicology, Indiana University School of Medicine, Indianapolis, Indiana, USA
| | - Jeffrey B Travers
- Department of Pharmacology and Toxicology, Indiana University School of Medicine, Indianapolis, Indiana, USA; Department of Dermatology, Indiana University School of Medicine, Indianapolis, Indiana, USA; Department of Pharmacology and Toxicology, Wright State University, Dayton, Ohio, USA
| | - Mark H Kaplan
- Department of Pediatrics and Wells Center for Pediatric Research, Indiana University School of Medicine, Indianapolis, Indiana, USA; Department of Microbiology and Immunology, Indiana University School of Medicine, Indianapolis, Indiana, USA.
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