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Abdi A, Oroojzadeh P, Valivand N, Sambrani R, Lotfi H. Immunological aspects of probiotics for improving skin diseases: Influence on the Gut-Brain-Skin Axis. Biochem Biophys Res Commun 2024; 702:149632. [PMID: 38340656 DOI: 10.1016/j.bbrc.2024.149632] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2023] [Revised: 01/27/2024] [Accepted: 02/04/2024] [Indexed: 02/12/2024]
Abstract
The interplay between gut microbiota and human health, both mental and physical, is well-documented. This connection extends to the gut-brain-skin axis, linking gut microbiota to skin health. Recent studies have underscored the potential of probiotics and prebiotics to modulate gut microbiota, supported by in vivo and clinical investigations. In this comprehensive review, we explore the immunological implications of probiotics in influencing the gut-skin axis for the treatment and prevention of skin conditions, including psoriasis, acne, diabetic ulcers, atopic dermatitis, and skin cancer. Our analysis reveals that probiotics exert their effects by modulating cytokine production, whether administered orally or topically. Probiotics bolster skin defenses through the production of antimicrobial peptides and the induction of keratinocyte differentiation and regeneration. Yet, many questions surrounding probiotics remain unanswered, necessitating further exploration of their mechanisms of action in the context of skin diseases.
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Affiliation(s)
- Ali Abdi
- Medical Immunology, Aziz Sancar Institute of Experimental Medicine, İstanbul University, Istanbul, Turkey
| | - Parvin Oroojzadeh
- Student Research Committee, Department of Food Science and Technology, Faculty of Nutrition and Food Sciences, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Nassim Valivand
- Student Research Committee, Qazvin University of Medical Sciences, Qazvin, Iran
| | - Roshanak Sambrani
- Clinical Research Development Unit of Razi Educational and Treatment Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Hajie Lotfi
- Cellular and Molecular Research Center, Research Institute for Prevention of Non-Communicable Disease, Qazvin University of Medical Sciences, Qazvin, Iran.
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2
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Sieminska I, Pieniawska M, Grzywa TM. The Immunology of Psoriasis-Current Concepts in Pathogenesis. Clin Rev Allergy Immunol 2024; 66:164-191. [PMID: 38642273 DOI: 10.1007/s12016-024-08991-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/01/2024] [Indexed: 04/22/2024]
Abstract
Psoriasis is one of the most common inflammatory skin diseases with a chronic, relapsing-remitting course. The last decades of intense research uncovered a pathological network of interactions between immune cells and other types of cells in the pathogenesis of psoriasis. Emerging evidence indicates that dendritic cells, TH17 cells, and keratinocytes constitute a pathogenic triad in psoriasis. Dendritic cells produce TNF-α and IL-23 to promote T cell differentiation toward TH17 cells that produce key psoriatic cytokines IL-17, IFN-γ, and IL-22. Their activity results in skin inflammation and activation and hyperproliferation of keratinocytes. In addition, other cells and signaling pathways are implicated in the pathogenesis of psoriasis, including TH9 cells, TH22 cells, CD8+ cytotoxic cells, neutrophils, γδ T cells, and cytokines and chemokines secreted by them. New insights from high-throughput analysis of lesional skin identified novel signaling pathways and cell populations involved in the pathogenesis. These studies not only expanded our knowledge about the mechanisms of immune response and the pathogenesis of psoriasis but also resulted in a revolution in the clinical management of patients with psoriasis. Thus, understanding the mechanisms of immune response in psoriatic inflammation is crucial for further studies, the development of novel therapeutic strategies, and the clinical management of psoriasis patients. The aim of the review was to comprehensively present the dysregulation of immune response in psoriasis with an emphasis on recent findings. Here, we described the role of immune cells, including T cells, B cells, dendritic cells, neutrophils, monocytes, mast cells, and innate lymphoid cells (ILCs), as well as non-immune cells, including keratinocytes, fibroblasts, endothelial cells, and platelets in the initiation, development, and progression of psoriasis.
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Affiliation(s)
- Izabela Sieminska
- University Centre of Veterinary Medicine, University of Agriculture in Krakow, Krakow, Poland
| | - Monika Pieniawska
- Institute of Human Genetics, Polish Academy of Sciences, Poznań, Poland
| | - Tomasz M Grzywa
- Laboratory of Immunology, Mossakowski Medical Research Institute, Polish Academy of Sciences, Warsaw, Poland.
- Department of Methodology, Medical University of Warsaw, Warsaw, Poland.
- The Raymond G. Perelman Center for Cellular and Molecular Therapeutics, Department of Pathology and Laboratory Medicine, Children's Hospital of Philadelphia, Philadelphia, USA.
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3
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Dillemans L, De Somer L, Neerinckx B, Proost P. A review of the pleiotropic actions of the IFN-inducible CXC chemokine receptor 3 ligands in the synovial microenvironment. Cell Mol Life Sci 2023; 80:78. [PMID: 36862204 PMCID: PMC11071919 DOI: 10.1007/s00018-023-04715-w] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2022] [Revised: 01/09/2023] [Accepted: 02/01/2023] [Indexed: 03/03/2023]
Abstract
Chemokines are pivotal players in instigation and perpetuation of synovitis through leukocytes egress from the blood circulation into the inflamed articulation. Multitudinous literature addressing the involvement of the dual-function interferon (IFN)-inducible chemokines CXCL9, CXCL10 and CXCL11 in diseases characterized by chronic inflammatory arthritis emphasizes the need for detangling their etiopathological relevance. Through interaction with their mutual receptor CXC chemokine receptor 3 (CXCR3), the chemokines CXCL9, CXCL10 and CXCL11 exert their hallmark function of coordinating directional trafficking of CD4+ TH1 cells, CD8+ T cells, NK cells and NKT cells towards inflammatory niches. Among other (patho)physiological processes including infection, cancer, and angiostasis, IFN-inducible CXCR3 ligands have been implicated in autoinflammatory and autoimmune diseases. This review presents a comprehensive overview of the abundant presence of IFN-induced CXCR3 ligands in bodily fluids of patients with inflammatory arthritis, the outcomes of their selective depletion in rodent models, and the attempts at developing candidate drugs targeting the CXCR3 chemokine system. We further propose that the involvement of the CXCR3 binding chemokines in synovitis and joint remodeling encompasses more than solely the directional ingress of CXCR3-expressing leukocytes. The pleotropic actions of the IFN-inducible CXCR3 ligands in the synovial niche reiteratively illustrate the extensive complexity of the CXCR3 chemokine network, which is based on the intercommunion of IFN-inducible CXCR3 ligands with distinct CXCR3 isoforms, enzymes, cytokines, and infiltrated and resident cells present in the inflamed joints.
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Affiliation(s)
- Luna Dillemans
- Laboratory of Molecular Immunology, Department of Microbiology, Immunology and Transplantation, Rega Institute, KU Leuven, Leuven, Belgium
| | - Lien De Somer
- Laboratory of Immunobiology, Department of Microbiology, Immunology and Transplantation, Rega Institute, KU Leuven, Leuven, Belgium
| | - Barbara Neerinckx
- Skeletal Biology and Engineering Research Center, Department of Development and Regeneration, KU Leuven, Leuven, Belgium
- Department of Rheumatology, University Hospitals Leuven, Leuven, Belgium
| | - Paul Proost
- Laboratory of Molecular Immunology, Department of Microbiology, Immunology and Transplantation, Rega Institute, KU Leuven, Leuven, Belgium.
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4
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Chen Y, Griffiths CEM, Bulfone-Paus S. Exploring Mast Cell-CD8 T Cell Interactions in Inflammatory Skin Diseases. Int J Mol Sci 2023; 24:1564. [PMID: 36675078 PMCID: PMC9861959 DOI: 10.3390/ijms24021564] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2022] [Revised: 01/09/2023] [Accepted: 01/11/2023] [Indexed: 01/15/2023] Open
Abstract
The skin is exposed to environmental challenges and contains skin-resident immune cells, including mast cells (MCs) and CD8 T cells that act as sentinels for pathogens and environmental antigens. Human skin MCs and their mediators participate in the maintenance of tissue homeostasis and regulate the recruitment and activity of immune cells involved in the pathogenesis of skin diseases. The cutaneous CD8 T cell compartment is comprised of long-persisting resident memory T cells (TRM) and migratory or recirculating cells; both populations provide durable site immune surveillance. Several lines of evidence indicate that MC-derived products, such as CCL5 and TNF-α, modulate the migration and function of CD8 T cells. Conversely, activated CD8 T cells induce the upregulation of MC costimulatory molecules. Moreover, the close apposition of MCs and CD8 T cells has been recently identified in the skin of several dermatoses, such as alopecia areata. This review outlines the current knowledge about bidirectional interactions between human MCs and CD8 T cells, analyses the alteration of their communication in the context of three common skin disorders in which these cells have been found altered in number or function-psoriasis, atopic dermatitis, and vitiligo-and discusses the current unanswered questions.
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Affiliation(s)
| | | | - Silvia Bulfone-Paus
- Lydia Becker Institute of Immunology and Inflammation, Dermatology Research Centre, NIHR Manchester Biomedical Research Centre, University of Manchester, Manchester M13 9PL, UK
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5
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den Braanker H, Razawy W, Wervers K, Mus AMC, Davelaar N, Kok MR, Lubberts E. Characterizing memory T helper cells in patients with psoriasis, subclinical, or early psoriatic arthritis using a machine learning algorithm. Arthritis Res Ther 2022; 24:28. [PMID: 35045868 PMCID: PMC8767727 DOI: 10.1186/s13075-021-02714-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2021] [Accepted: 12/28/2021] [Indexed: 12/31/2022] Open
Abstract
Background Psoriasis patients developing psoriatic arthritis (PsA) are thought to go through different phases. Understanding the underlying events in these phases is crucial to diagnose PsA early. Here, we have characterized the circulating memory T helper (Th) cells in psoriasis patients with or without arthralgia, psoriasis patients who developed PsA during follow-up (subclinical PsA), early PsA patients and healthy controls to elucidate their role in PsA development. Methods We used peripheral blood mononuclear cells of sex and age-matched psoriasis patients included in Rotterdam Joint Skin study (n=22), early PsA patients included in Dutch South West Early Psoriatic Arthritis Cohort (DEPAR) (n=23) and healthy controls (HC; n=17). We profiled memory Th cell subsets with flow cytometry and used the machine learning algorithm FlowSOM to interpret the data. Results Three of the 22 psoriasis patients developed PsA during 2-year follow-up. FlowSOM identified 12 clusters of memory Th cells, including Th1, Th2, Th17/22, and Th17.1 cells. All psoriasis and PsA patients had higher numbers of Th17/22 than healthy controls. Psoriasis patients without arthralgia had lower numbers of CCR6-CCR4+CXCR3+ memory Th cells and higher numbers of CCR6+CCR4-CXCR3-memory Th cells compared to HC. PsA patients had higher numbers of Th2 cells and CCR6+CCR4+CXCR3- cells, but lower numbers of CCR6+CCR4+CXCR3+ memory Th cells compared to HC. The number of CCR6+ Th17.1 cells negatively correlated with tender joint counts and the number of CCR6+ Th17 cells positively correlated with skin disease severity. Conclusions Unsupervised clustering analysis revealed differences in circulating memory Th cells between psoriasis and PsA patients compared to HC; however, no specific subset was identified characterizing subclinical PsA patients. Supplementary Information The online version contains supplementary material available at 10.1186/s13075-021-02714-5.
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Affiliation(s)
- Hannah den Braanker
- Department of Rheumatology, Erasmus MC, University Medical Center, Rotterdam, The Netherlands.,Department of Rheumatology and Clinical Immunology, Maasstad Hospital, Rotterdam, The Netherlands.,Department of Immunology, Erasmus MC, University Medical Center, Rotterdam, The Netherlands
| | - Wida Razawy
- Department of Rheumatology, Erasmus MC, University Medical Center, Rotterdam, The Netherlands.,Department of Immunology, Erasmus MC, University Medical Center, Rotterdam, The Netherlands
| | - Kim Wervers
- Department of Rheumatology, Erasmus MC, University Medical Center, Rotterdam, The Netherlands
| | - Anne-Marie C Mus
- Department of Rheumatology, Erasmus MC, University Medical Center, Rotterdam, The Netherlands.,Department of Immunology, Erasmus MC, University Medical Center, Rotterdam, The Netherlands
| | - Nadine Davelaar
- Department of Rheumatology, Erasmus MC, University Medical Center, Rotterdam, The Netherlands.,Department of Immunology, Erasmus MC, University Medical Center, Rotterdam, The Netherlands
| | - Marc R Kok
- Department of Rheumatology and Clinical Immunology, Maasstad Hospital, Rotterdam, The Netherlands
| | - Erik Lubberts
- Department of Rheumatology, Erasmus MC, University Medical Center, Rotterdam, The Netherlands. .,Department of Immunology, Erasmus MC, University Medical Center, Rotterdam, The Netherlands.
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6
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Kanayama Y, Torii K, Ikumi K, Morita A. Bath Psoralen Plus UVA Therapy Suppresses Keratinocyte-Derived Chemokines in Pathogenetically Relevant Cells. JID INNOVATIONS 2021; 1:100027. [PMID: 34909726 PMCID: PMC8659370 DOI: 10.1016/j.xjidi.2021.100027] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2021] [Revised: 04/14/2021] [Accepted: 05/04/2021] [Indexed: 11/28/2022] Open
Abstract
Psoriasis is a chronic inflammatory proliferative skin disease involving various types of chemokines regulating immune cell migration, localization, and activation. Bath psoralen plus UVA (PUVA) treatment is an established phototherapy for psoriasis, but its effects on chemokine levels remain unknown. We investigated the levels of 22 serum chemokines in 20 patients with psoriasis first treated with bath PUVA therapy between 2007 and 2011 in a single center and analyzed the associations between the chemokines and disease severity (PASI) before and after therapy to investigate the mechanisms of action of bath PUVA therapy. Before bath PUVA therapy, the PASI scores correlated with the serum levels of CCL17 (r = 0.581), CCL18 (r = 0.462), CCL19 (r = 0.477), and CXCL16 (r = 0.524). After bath PUVA, the serum levels of CCL17, CCL22, CXCL1, and CXCL9 were significantly decreased. Heatmap clustering and network analysis based on statistically significant Spearman correlations among the chemokines showed distinctive changes in the chemokine signature. Our findings revealed that the levels of several chemokines correlated with the disease state of psoriasis. Furthermore, bath PUVA therapy reduced the secretion of keratinocyte-derived chemokines that induce the migration of immune cells important for psoriasis pathogenesis, partly revealing the mechanism of the therapeutic activity.
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Affiliation(s)
- Yoshifumi Kanayama
- Department of Geriatric and Environmental Dermatology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - Kan Torii
- Department of Geriatric and Environmental Dermatology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - Kyoko Ikumi
- Department of Geriatric and Environmental Dermatology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - Akimichi Morita
- Department of Geriatric and Environmental Dermatology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
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7
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Molecular Pathogenesis of Psoriasis and Biomarkers Reflecting Disease Activity. J Clin Med 2021; 10:jcm10153199. [PMID: 34361983 PMCID: PMC8346978 DOI: 10.3390/jcm10153199] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2021] [Revised: 07/18/2021] [Accepted: 07/19/2021] [Indexed: 12/17/2022] Open
Abstract
Psoriasis is a chronic inflammatory skin disease induced by multifactorial causes and is characterized by bothersome, scaly reddish plaques, especially on frequently chafed body parts, such as extensor sites of the extremities. The latest advances in molecular-targeted therapies using biologics or small-molecule inhibitors help to sufficiently treat even the most severe psoriatic symptoms and the extra cutaneous comorbidities of psoriatic arthritis. The excellent clinical effects of these therapies provide a deeper understanding of the impaired quality of life caused by this disease and the detailed molecular mechanism in which the interleukin (IL)-23/IL-17 axis plays an essential role. To establish standardized therapeutic strategies, biomarkers that define deep remission are indispensable. Several molecules, such as cytokines, chemokines, antimicrobial peptides, and proteinase inhibitors, have been recognized as potent biomarker candidates. In particular, blood protein markers that are repeatedly measurable can be extremely useful in daily clinical practice. Herein, we summarize the molecular mechanism of psoriasis, and we describe the functions and induction mechanisms of these biomarker candidates.
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8
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Visser MJE, Venter C, Roberts TJ, Tarr G, Pretorius E. Psoriatic disease is associated with systemic inflammation, endothelial activation, and altered haemostatic function. Sci Rep 2021; 11:13043. [PMID: 34158537 PMCID: PMC8219816 DOI: 10.1038/s41598-021-90684-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2021] [Accepted: 05/10/2021] [Indexed: 02/08/2023] Open
Abstract
Psoriasis is a chronic, immune-mediated inflammatory skin disease, affecting approximately 2% of the general population, which can be accompanied by psoriatic arthritis (PsA). The condition has been associated with an increased cardiovascular burden. Hypercoagulability is a potential underlying mechanism that may contribute to the increased risk of major cardiovascular events in psoriatic individuals. Whole blood samples were collected from 20 PsA patients and 20 healthy individuals. The concentrations of inflammatory molecules (C-reactive protein, serum amyloid A, soluble intercellular adhesion molecule-1, soluble vascular cell adhesion molecule-1, and soluble P-selectin) were determined by enzyme-linked immunosorbent assays. In addition, clotting efficiency was evaluated by thromboelastography. The fibrin network architecture was also assessed by scanning electron microscopy. Elevated levels of circulating inflammatory molecules were significantly associated with the presence of psoriatic disease. Furthermore, an increased tendency towards thrombus formation was significantly predictive of disease presence. Scanning electron microscopy revealed that fibrin clots were denser in psoriatic individuals, compared to healthy controls, with an increased fibrin fibre diameter associated with psoriatic disease. Our results add to the accumulating evidence of the systemic nature of psoriasis and the subsequent risk of cardiovascular comorbidities, potentially due to an acquired hypercoagulability. We suggest that haemostatic function should be monitored carefully in psoriatic patients that present with severe disease, due to the pre-eminent risk of developing thrombotic complications.
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Affiliation(s)
- Maria J E Visser
- Department of Physiological Sciences, Faculty of Science, Stellenbosch University, Private Bag X1 MATIELAND, Stellenbosch, 7602, South Africa
| | - Chantelle Venter
- Department of Physiological Sciences, Faculty of Science, Stellenbosch University, Private Bag X1 MATIELAND, Stellenbosch, 7602, South Africa
| | - Timothy J Roberts
- Department of Physiological Sciences, Faculty of Science, Stellenbosch University, Private Bag X1 MATIELAND, Stellenbosch, 7602, South Africa.,Department of Biochemistry and Systems Biology, Institute of Systems, Molecular and Integrative Biology, Faculty of Health and Life Sciences, University of Liverpool, Liverpool, UK.,University College London Hospital NHS Foundation Trust, 250 Euston Road, London, NW1 2PB, UK
| | - Gareth Tarr
- Department of Physiological Sciences, Faculty of Science, Stellenbosch University, Private Bag X1 MATIELAND, Stellenbosch, 7602, South Africa.,Division of Rheumatology, Institute of Orthopaedics and Rheumatology, Winelands Mediclinic Orthopaedic Hospital, Stellenbosch University, Cape Town, South Africa
| | - Etheresia Pretorius
- Department of Physiological Sciences, Faculty of Science, Stellenbosch University, Private Bag X1 MATIELAND, Stellenbosch, 7602, South Africa.
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9
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Smajlović A, Haverić A, Alić A, Hadžić M, Smajlović A, Mujezinović I, Lojo-Kadrić N, Ramić J, Elez-Burnjaković N, Haverić S, Pojskić L. Molecular and histopathological profiling of imiquimod induced dermatosis in Swiss Wistar rats: contribution to the rat model for novel anti-psoriasis treatments. Mol Biol Rep 2021; 48:4295-4303. [PMID: 34097205 DOI: 10.1007/s11033-021-06445-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2021] [Accepted: 05/27/2021] [Indexed: 11/30/2022]
Abstract
Imiquimod (IMQ) induced human-like psoriasis in mice has been shown to be effective in testing and development of novel treatments. The IMQ psoriasis model has become widely used animal model, however, it is not completely characterized in different rat strains. We aimed to evaluate IMQ and betamethasone treatment for induction and reversal of psoriatic lesions on macroscopic, histological, genetic as well as cytokines and chemokines activation levels. Wistar rats were treated topically with IMQ. Adopted Psoriasis Area Severity Index (PASI) was calculated at the baseline, after the IMQ-symptoms induction and after betamethasone-symptoms reversal. Systematic effects were studied on cytokines and chemokines levels in plasma. Skin biopsy was taken to assess histological symptoms and selected inflammatory cytokines and receptors genes expression levels. Reversal of skin lesions, after betamethasone treatment, was significant (p = 0.03). Histological differences between untreated and IMQ-treated skin were significant for some markers (p < 0.05) though not significantly decreased by betamethasone treatment. Fourteen genes were significantly up-regulated after the IMQ and four genes were down-regulated after skin lesions reversal by betamethasone. This work provides new insights on biological effects of imiquimod induced psoriasis and its reversal by betamethasone treatment in Wistar rats. It also contributes to general knowledge of the rat model usage for testing of novel anti-psoriasis drugs.
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Affiliation(s)
- Ajla Smajlović
- Institute for Genetic Engineering and Biotechnology, University of Sarajevo, Zmaja od Bosne 8, 71000, Sarajevo, Bosnia and Herzegovina
| | - Anja Haverić
- Institute for Genetic Engineering and Biotechnology, University of Sarajevo, Zmaja od Bosne 8, 71000, Sarajevo, Bosnia and Herzegovina.
| | - Amer Alić
- Veterinary Faculty, University of Sarajevo, Zmaja od Bosne 90, 71000, Sarajevo, Bosnia and Herzegovina
| | - Maida Hadžić
- Institute for Genetic Engineering and Biotechnology, University of Sarajevo, Zmaja od Bosne 8, 71000, Sarajevo, Bosnia and Herzegovina
| | - Ahmed Smajlović
- Veterinary Faculty, University of Sarajevo, Zmaja od Bosne 90, 71000, Sarajevo, Bosnia and Herzegovina
| | - Indira Mujezinović
- Veterinary Faculty, University of Sarajevo, Zmaja od Bosne 90, 71000, Sarajevo, Bosnia and Herzegovina
| | - Naida Lojo-Kadrić
- Institute for Genetic Engineering and Biotechnology, University of Sarajevo, Zmaja od Bosne 8, 71000, Sarajevo, Bosnia and Herzegovina
| | - Jasmin Ramić
- Institute for Genetic Engineering and Biotechnology, University of Sarajevo, Zmaja od Bosne 8, 71000, Sarajevo, Bosnia and Herzegovina
| | | | - Sanin Haverić
- Institute for Genetic Engineering and Biotechnology, University of Sarajevo, Zmaja od Bosne 8, 71000, Sarajevo, Bosnia and Herzegovina
| | - Lejla Pojskić
- Institute for Genetic Engineering and Biotechnology, University of Sarajevo, Zmaja od Bosne 8, 71000, Sarajevo, Bosnia and Herzegovina
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10
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Qi Q, Li Q, Zhu H, Lu H, Yang X, Wu Y, Feng C, Fan C, Li H, Wu B, Gao Y, Zhang Z, Zhou H, Zuo J, Tang W. Triptolide analog LLDT-8 ameliorates psoriasis-like dermatitis in BALB/c mice via suppressing the IL-36α signaling pathway. Pharmacol Res 2021; 169:105678. [PMID: 34015449 DOI: 10.1016/j.phrs.2021.105678] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/01/2021] [Revised: 05/04/2021] [Accepted: 05/11/2021] [Indexed: 12/26/2022]
Abstract
Triptolide has shown a good immunosuppressive effect on autoimmune diseases. However, the toxicity limited its widely clinical practice. In this study, we investigated the effects and underlying mechanisms of (5R)-5-hydroxytriptolide (LLDT-8), a novel triptolide derivative, on a murine psoriasis-like dermatitis model and related cell lines. Here, we showed that LLDT-8 significantly attenuated symptoms of psoriasis-like dermatitis induced by imiquimod (IMQ, a TLR7 agonist) by reducing the psoriasis area and severity index (PASI) score and inflammatory parameters. The action of LLDT-8 was involved in down-regulated interleukin (IL)-36α expression and blocked IL-36α pathway by LC-MS-based label-free quantitative (LFQ) proteomic approach and further experiments. Meanwhile, we observed that LLDT-8 significantly inhibited the expression of IL-36α in R837-treated bone marrow-derived dendritic cells (BMDCs). In conclusion, LLDT-8 notably alleviated IMQ-induced psoriasis-like skin inflammation via suppressing the IL-36α signaling pathway, suggesting LLDT-8 might be a potential drug for the treatment of psoriasis.
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Affiliation(s)
- Qing Qi
- Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China.
| | - Qian Li
- Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China; School of Life Sciences, Shanghai University, Shanghai 201203, China.
| | - Hongwen Zhu
- Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China.
| | - Huimin Lu
- Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China; School of Pharmacy, University of Chinese Academy of Sciences, Beijing 100049, China.
| | - Xiaoqian Yang
- Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China.
| | - Yanwei Wu
- Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China.
| | - Chunlan Feng
- Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China.
| | - Chen Fan
- Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China.
| | - Heng Li
- Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China; School of Pharmacy, University of Chinese Academy of Sciences, Beijing 100049, China.
| | - Bing Wu
- Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China; School of Pharmacy, University of Chinese Academy of Sciences, Beijing 100049, China.
| | - Yuanzhuo Gao
- Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China; School of Pharmacy, University of Chinese Academy of Sciences, Beijing 100049, China.
| | - Zongwang Zhang
- Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China; School of Life Sciences, Shanghai University, Shanghai 201203, China.
| | - Hu Zhou
- Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China.
| | - Jianping Zuo
- Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China.
| | - Wei Tang
- Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China.
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11
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Jiang Y, Tsoi LC, Billi AC, Ward NL, Harms PW, Zeng C, Maverakis E, Kahlenberg JM, Gudjonsson JE. Cytokinocytes: the diverse contribution of keratinocytes to immune responses in skin. JCI Insight 2020; 5:142067. [PMID: 33055429 PMCID: PMC7605526 DOI: 10.1172/jci.insight.142067] [Citation(s) in RCA: 108] [Impact Index Per Article: 27.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
The skin serves as the primary interface between our body and the external environment and acts as a barrier against entry of physical agents, chemicals, and microbes. Keratinocytes make up the main cellular constitute of the outermost layer of the skin, contributing to the formation of the epidermis, and they are crucial for maintaining the integrity of this barrier. Beyond serving as a physical barrier component, keratinocytes actively participate in maintaining tissue homeostasis, shaping, amplifying, and regulating immune responses in skin. Keratinocytes act as sentinels, continuously monitoring changes in the environment, and, through microbial sensing, stretch, or other physical stimuli, can initiate a broad range of inflammatory responses via secretion of various cytokines, chemokines, and growth factors. This diverse function of keratinocytes contributes to the highly variable clinical manifestation of skin immune responses. In this Review, we highlight the highly diverse functions of epidermal keratinocytes and their contribution to various immune-mediated skin diseases.
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Affiliation(s)
- Yanyun Jiang
- Department of Dermatology, University of Michigan, Ann Arbor, Michigan, USA.,Department of Dermatology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Lam C Tsoi
- Department of Dermatology, University of Michigan, Ann Arbor, Michigan, USA.,Department of Computational Medicine and Bioinformatics and Department of Biostatistics, University of Michigan Medical School, Ann Arbor, Michigan, USA
| | - Allison C Billi
- Department of Dermatology, University of Michigan, Ann Arbor, Michigan, USA
| | - Nicole L Ward
- Department of Nutrition and Department of Dermatology, Case Western Reserve University, Cleveland, Ohio, USA
| | - Paul W Harms
- Department of Pathology, University of Michigan, Ann Arbor, Michigan, USA
| | - Chang Zeng
- Department of Dermatology, University of Michigan, Ann Arbor, Michigan, USA
| | - Emanual Maverakis
- Department of Dermatology, University of California, Davis, Sacramento, California, USA
| | - J Michelle Kahlenberg
- Division of Rheumatology, Department of Internal Medicine, University of Michigan, Michigan, USA.,A. Alfred Taubman Medical Research Institute, Michigan, USA
| | - Johann E Gudjonsson
- Department of Dermatology, University of Michigan, Ann Arbor, Michigan, USA.,A. Alfred Taubman Medical Research Institute, Michigan, USA
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12
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Sondermann W, Herz S, Sody E, Körber A. Dermatological complications of therapy with biologics in inflammatory autoimmune diseases. J Dtsch Dermatol Ges 2020; 17:1029-1037. [PMID: 31631555 DOI: 10.1111/ddg.13964] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2019] [Accepted: 04/23/2019] [Indexed: 12/12/2022]
Abstract
BACKGROUND AND OBJECTIVE Cutaneous adverse events (CAEs) occur in up to 10 % of patients with immune-mediated inflammatory disease (IMID) treated with antitumor necrosis factor (TNF)α agents. The aim of this clinical study was to track and observe the course of CAEs in all biologic therapies. PATIENTS AND METHODS The population for this study consisted of patients with CAEs under biologic therapy who were examined by experienced board-certified dermatologists in the outpatient department of the University Hospital Essen, Department of Dermatology. RESULTS Altogether 39 patients with a total of 45 CAEs were included in this study. In 60 % of the cases a form of paradoxical psoriasis was diagnosed. Two thirds (66.6 %) of the patients with CAEs were diagnosed with an underlying inflammatory bowel disease (IBD). TNFα antagonists were the triggering agents in about 95 % of the cases. Changes in biological therapy were required in nearly half of the cases (46.2 %). Almost 90 % of the patients had either a complete (42.1 %) or a partial response (47 %). CONCLUSIONS Management of CEAs under biological therapy can be challenging in clinical practice. Case discussions between gastroenterologists, rheumatologists and dermatologists should be undertaken to best manage patients with CAEs and avoid unnecessary changes of therapy.
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Affiliation(s)
- Wiebke Sondermann
- Department of Dermatology, Venereology and Allergology, University Hospital Essen, University Duisburg-Essen, Essen, Germany
| | - Saskia Herz
- Department of Dermatology, Venereology and Allergology, University Hospital Essen, University Duisburg-Essen, Essen, Germany
| | - Elsa Sody
- Department of Dermatology, Venereology and Allergology, University Hospital Essen, University Duisburg-Essen, Essen, Germany
| | - Andreas Körber
- Hautärzte RÜ 143, Rüttenscheider Str. 143, 45130, Essen, Germany
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13
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Sondermann W, Herz S, Sody E, Körber A. Dermatologische Komplikationen unter Therapie mit Biologika bei entzündlichen Autoimmunerkrankungen. J Dtsch Dermatol Ges 2019; 17:1029-1038. [DOI: 10.1111/ddg.13964_g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2019] [Accepted: 04/23/2019] [Indexed: 11/27/2022]
Affiliation(s)
- Wiebke Sondermann
- Klinik für DermatologieVenerologie und AllergologieUniversitätsklinikum EssenUniversität Duisburg‐Essen Essen
| | - Saskia Herz
- Klinik für DermatologieVenerologie und AllergologieUniversitätsklinikum EssenUniversität Duisburg‐Essen Essen
| | - Elsa Sody
- Klinik für DermatologieVenerologie und AllergologieUniversitätsklinikum EssenUniversität Duisburg‐Essen Essen
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14
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Therapeutic and Diagnostic Implications of T Cell Scarring in Celiac Disease and Beyond. Trends Mol Med 2019; 25:836-852. [DOI: 10.1016/j.molmed.2019.05.009] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2019] [Revised: 05/22/2019] [Accepted: 05/28/2019] [Indexed: 12/13/2022]
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15
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Loss of GRHL3 leads to TARC/CCL17-mediated keratinocyte proliferation in the epidermis. Cell Death Dis 2018; 9:1072. [PMID: 30341279 PMCID: PMC6195598 DOI: 10.1038/s41419-018-0901-6] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2017] [Revised: 07/20/2018] [Accepted: 07/22/2018] [Indexed: 12/21/2022]
Abstract
Identifying soluble factors that influence epidermal integrity is critical for the development of preventative and therapeutic strategies for disorders such as ichthyosis, psoriasis, dermatitis and epidermal cancers. The transcription factor Grainyhead-like 3 (GRHL3) is essential for maintaining barrier integrity and preventing development of cutaneous squamous cell carcinoma (SCC); however, how loss of this factor, which in the skin is expressed exclusively within suprabasal epidermal layers triggers proliferation of basal keratinocytes, had thus far remained elusive. Our present study identifies thymus and activation-regulated chemokine (TARC) as a novel soluble chemokine mediator of keratinocyte proliferation following loss of GRHL3. Knockdown of GRHL3 in human keratinocytes showed that of 42 cytokines examined, TARC was the only significantly upregulated chemokine. Mouse skin lacking Grhl3 presented an inflammatory response with hallmarks of TARC activation, including heightened induction of blood clotting, increased infiltration of mast cells and pro-inflammatory T cells, increased expression of the pro-proliferative/pro-inflammatory markers CD3 and pSTAT3, and significantly elevated basal keratinocyte proliferation. Treatment of skin cultures lacking Grhl3 with the broad spectrum anti-inflammatory 5-aminosalicylic acid (5ASA) partially restored epidermal differentiation, indicating that abnormal keratinocyte proliferation/differentiation balance is a key driver of barrier dysfunction following loss of Grhl3, and providing a promising therapeutic avenue in the treatment of GRHL3-mediated epidermal disorders.
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16
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Chen K, Bao Z, Tang P, Gong W, Yoshimura T, Wang JM. Chemokines in homeostasis and diseases. Cell Mol Immunol 2018; 15:324-334. [PMID: 29375126 PMCID: PMC6052829 DOI: 10.1038/cmi.2017.134] [Citation(s) in RCA: 116] [Impact Index Per Article: 19.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2017] [Revised: 10/16/2017] [Accepted: 10/18/2017] [Indexed: 12/19/2022] Open
Abstract
For the past twenty years, chemokines have emerged as a family of critical mediators of cell migration during immune surveillance, development, inflammation and cancer progression. Chemokines bind to seven transmembrane G protein-coupled receptors (GPCRs) that are expressed by a wide variety of cell types and cause conformational changes in trimeric G proteins that trigger the intracellular signaling pathways necessary for cell movement and activation. Although chemokines have evolved to benefit the host, inappropriate regulation or utilization of these small proteins may contribute to or even cause diseases. Therefore, understanding the role of chemokines and their GPCRs in the complex physiological and diseased microenvironment is important for the identification of novel therapeutic targets. This review introduces the functional array and signals of multiple chemokine GPCRs in guiding leukocyte trafficking as well as their roles in homeostasis, inflammation, immune responses and cancer.
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Affiliation(s)
- Keqiang Chen
- Cancer and Inflammation Program, Center for Cancer Research, National Cancer Institute at Frederick, 21702, Frederick, MD, USA
| | - Zhiyao Bao
- Cancer and Inflammation Program, Center for Cancer Research, National Cancer Institute at Frederick, 21702, Frederick, MD, USA
- Department of Pulmonary & Critical Care Medicine, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, 200025, Shanghai, P. R. China
| | - Peng Tang
- Cancer and Inflammation Program, Center for Cancer Research, National Cancer Institute at Frederick, 21702, Frederick, MD, USA
- Department of Breast Surgery, Southwest Hospital, Third Military Medical University, 400038, Chongqing, China
| | - Wanghua Gong
- Basic Research Program, Leidos Biomedical Research, Inc., 21702, Frederick, MD, USA
| | - Teizo Yoshimura
- Department of Pathology and Experimental Medicine, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, 700-8558, Okayama, Japan
| | - Ji Ming Wang
- Cancer and Inflammation Program, Center for Cancer Research, National Cancer Institute at Frederick, 21702, Frederick, MD, USA.
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17
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Abji F, Pollock RA, Liang K, Chandran V, Gladman DD. Brief Report: CXCL10 Is a Possible Biomarker for the Development of Psoriatic Arthritis Among Patients With Psoriasis. Arthritis Rheumatol 2017; 68:2911-2916. [PMID: 27389865 DOI: 10.1002/art.39800] [Citation(s) in RCA: 53] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2016] [Accepted: 06/23/2016] [Indexed: 11/08/2022]
Abstract
OBJECTIVE Biomarkers that can predict the development of psoriatic arthritis (PsA) in patients with psoriasis would be useful in clinical practice. The aim of this study was to assess whether CXCL10 could be a predictive biomarker of PsA prior to its onset. METHODS Psoriasis patients without arthritis were followed up prospectively and assessed annually for development of PsA by a rheumatologist. Patients in whom PsA developed were designated as converters, while those in whom PsA did not develop were termed nonconverters. Baseline serum concentrations of CXCL10 were measured by Luminex assay in 46 converters and 45 nonconverters. RESULTS The level of CXCL10 was significantly higher in converters (median 493 pg/ml [interquartile range (IQR) 356-984]) than in nonconverters (median 371 pg/ml [IQR 263-578]; P = 0.005). In contrast, C-reactive protein (CRP) levels were not significantly different between converters and nonconverters at baseline. CXCL10 was associated with conversion status after adjustment for age, sex, duration of psoriasis, and duration of follow-up (odds ratio 1.3, 95% confidence interval 1.1-1.5, P = 0.004). In a subset of converters, the CXCL10 level was significantly higher at baseline (median 927.4 pg/ml [IQR 547.6-1,243]) than after PsA diagnosis (491.5 pg/ml [IQR 323.2-607]; P < 0.0001), while CRP levels were lower at baseline (26.6 μg/ml [IQR 16.37-62.75]) than after PsA diagnosis (36.1 μg/ml [IQR 14.74-101.7]; P = 0.003). CXCL10 gene expression was increased 17.3-fold in synovial fluid (SF) compared with blood from PsA patients (P = 0.01) and 44.3-fold in the SF of PsA patients compared with the SF of patients with gout (P = 0.001). CONCLUSION CXCL10 may be involved in PsA pathogenesis and is a candidate predictive biomarker for PsA in patients with psoriasis.
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Affiliation(s)
- Fatima Abji
- University of Toronto, Toronto, Ontario, Canada
| | | | - Kun Liang
- University of Waterloo, Waterloo, Ontario, Canada
| | - Vinod Chandran
- University of Toronto and Toronto Western Hospital, Toronto, Ontario, Canada
| | - Dafna D Gladman
- University of Toronto and Toronto Western Hospital, Toronto, Ontario, Canada
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18
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El Tawdy AM, Amin IM, Abdel Hay RM, Hassan AS, Gad ZS, Rashed LA. Toll-like receptor (TLR)7 expression in mycosis fungoides and psoriasis: a case-control study. Clin Exp Dermatol 2017; 42:172-177. [DOI: 10.1111/ced.13008] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/18/2016] [Indexed: 11/29/2022]
Affiliation(s)
- A. M. El Tawdy
- Dermatology Department; Faculty of Medicine; Cairo University; Cairo Egypt
| | - I. M. Amin
- Dermatology Department; Faculty of Medicine; Cairo University; Cairo Egypt
| | - R. M. Abdel Hay
- Dermatology Department; Faculty of Medicine; Cairo University; Cairo Egypt
| | - A. S. Hassan
- Dermatology Department; Faculty of Medicine; Cairo University; Cairo Egypt
| | - Z. S. Gad
- Surgical Oncology Department; National Cancer Institute; Cairo University; Cairo Egypt
| | - L. A. Rashed
- Clinical Biochemistry Department; Faculty of Medicine; Cairo University; Cairo Egypt
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19
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Diao LH, Li GG, Zhu YC, Tu WW, Huang CY, Lian RC, Chen X, Li YY, Zhang T, Huang Y, Zeng Y. Human chorionic gonadotropin potentially affects pregnancy outcome in women with recurrent implantation failure by regulating the homing preference of regulatory T cells. Am J Reprod Immunol 2017; 77. [PMID: 28044377 DOI: 10.1111/aji.12618] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2016] [Accepted: 11/19/2016] [Indexed: 01/24/2023] Open
Abstract
PROBLEM Human chorionic gonadotropin (hCG) and regulatory T cells (Tregs) have been suggested to play important roles during the initial stage of pregnancy. However, the clinical relevance and mechanism of the effects of hCG on Treg functions in women with recurrent implantation failure (RIF) remain to be elucidated. METHOD OF STUDY Thirty-four RIF and twenty-three control women were included in the study. Endometrial and peripheral Tregs were analyzed by immunohistochemistry and flow cytometry, respectively. Tregs were generated from naïve CD4+ T cells by stimulation with anti-CD3/CD28 in the presence or absence of hCG, and the subsets were analyzed by flow cytometry, Western blotting, and qPCR. RESULTS The percentages of endometrial FOXP3+ Tregs and peripheral CCR4+ FOXP3+ Tregs were significantly lower in the women with RIF than in the healthy controls. In addition, the percentages of CCR4+ FOXP3+ Tregs and TGF-β-expressing FOXP3+ Tregs were increased following the stimulation of naïve CD4+ T cells with anti-CD3/CD28, and these increases were concomitant with AKT and ERK dephosphorylation. CONCLUSIONS The results of this study provide novel evidence supporting a role of hCG in regulating the differentiation of peripheral FOXP3+ Tregs. The alterations of circulating Tregs may positively affect the pregnancy outcomes of patients with a history of RIF.
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Affiliation(s)
- Liang-Hui Diao
- Key Laboratory of Chemical Genomics, Shenzhen Graduate School, Peking University, Shenzhen, China.,Shenzhen Key Laboratory for Reproductive Immunology of Peri-implantation, Shenzhen Zhongshan Institute for Reproduction and Genetics, Fertility Center, Shenzhen Zhongshan Urology Hospital, Shenzhen, China
| | - Guan-Gui Li
- Shenzhen Key Laboratory for Reproductive Immunology of Peri-implantation, Shenzhen Zhongshan Institute for Reproduction and Genetics, Fertility Center, Shenzhen Zhongshan Urology Hospital, Shenzhen, China
| | - Yuan-Chang Zhu
- Shenzhen Key Laboratory for Reproductive Immunology of Peri-implantation, Shenzhen Zhongshan Institute for Reproduction and Genetics, Fertility Center, Shenzhen Zhongshan Urology Hospital, Shenzhen, China.,Key Laboratory in Healthy Science and Technology, Division of Life Science, Graduate School at Shenzhen, Tsinghua University, Shenzhen, China
| | - Wen-Wei Tu
- Laboratory for Translational Immunology, Department of Paediatrics and Adolescent Medicine, The University of Hong Kong, Hong Kong SAR, China
| | - Chun-Yu Huang
- Shenzhen Key Laboratory for Reproductive Immunology of Peri-implantation, Shenzhen Zhongshan Institute for Reproduction and Genetics, Fertility Center, Shenzhen Zhongshan Urology Hospital, Shenzhen, China.,Laboratory for Translational Immunology, Department of Paediatrics and Adolescent Medicine, The University of Hong Kong, Hong Kong SAR, China
| | - Ruo-Chun Lian
- Shenzhen Key Laboratory for Reproductive Immunology of Peri-implantation, Shenzhen Zhongshan Institute for Reproduction and Genetics, Fertility Center, Shenzhen Zhongshan Urology Hospital, Shenzhen, China
| | - Xian Chen
- Shenzhen Key Laboratory for Reproductive Immunology of Peri-implantation, Shenzhen Zhongshan Institute for Reproduction and Genetics, Fertility Center, Shenzhen Zhongshan Urology Hospital, Shenzhen, China
| | - Yu-Ye Li
- Shenzhen Key Laboratory for Reproductive Immunology of Peri-implantation, Shenzhen Zhongshan Institute for Reproduction and Genetics, Fertility Center, Shenzhen Zhongshan Urology Hospital, Shenzhen, China
| | - Tao Zhang
- Shenzhen Key Laboratory for Reproductive Immunology of Peri-implantation, Shenzhen Zhongshan Institute for Reproduction and Genetics, Fertility Center, Shenzhen Zhongshan Urology Hospital, Shenzhen, China
| | - Yong Huang
- Key Laboratory of Chemical Genomics, Shenzhen Graduate School, Peking University, Shenzhen, China
| | - Yong Zeng
- Shenzhen Key Laboratory for Reproductive Immunology of Peri-implantation, Shenzhen Zhongshan Institute for Reproduction and Genetics, Fertility Center, Shenzhen Zhongshan Urology Hospital, Shenzhen, China
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20
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Abstract
INTRODUCTION By virtue of its specificity for chemokines induced in Th1-associated pathologies, CXCR3 has attracted considerable attention as a target for therapeutic intervention. Several pharmacologically distinct small molecules with in vitro and in vivo potency have been described in the literature, although to date, none have shown efficacy in clinical trials. Areas covered: In this article, the author outlines the rationale for targeting CXCR3 and discusses the potential pitfalls in targeting receptors in poorly understood areas of chemokine biology. Furthermore, they cover emerging therapeutic areas outside of the 'traditional' Th1 arena in which CXCR3 antagonists may ultimately bear fruit. Finally, they discuss the design of recently discovered small molecules targeting CXCR3. Expert opinion: CXCR3 and its ligands appear to play roles in a multitude of diverse diseases in humans. In vitro studies suggest that CXCR3 is inherently 'druggable' and that potent, efficacious small molecules targeting CXCR3 antagonists will find a clinical niche. However, the well-trodden path to failure of small molecule chemokine receptor antagonists in clinical trials suggests that a cautious approach should be undertaken. Ideally, unequivocal evidence elucidating the precise role of CXCR3 should be obtained before targeting the receptor in a particular disease cohort.
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Affiliation(s)
- James E Pease
- a Inflammation, Repair & Development Section, National Heart & Lung Institute, Faculty of Medicine , Imperial College London , London , UK
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21
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Ruiz-Romeu E, Ferran M, Sagristà M, Gómez J, Giménez-Arnau A, Herszenyi K, Hóllo P, Celada A, Pujol R, Santamaria-Babí LF. Streptococcus pyogenes-induced cutaneous lymphocyte antigen-positive T cell-dependent epidermal cell activation triggers TH17 responses in patients with guttate psoriasis. J Allergy Clin Immunol 2016; 138:491-499.e6. [PMID: 27056267 DOI: 10.1016/j.jaci.2016.02.008] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2015] [Revised: 01/22/2016] [Accepted: 02/05/2016] [Indexed: 12/18/2022]
Abstract
BACKGROUND Guttate psoriasis (GP) is characterized by acute onset of small, rounded psoriatic lesions. Although this particular phenotype of psoriasis is usually associated with streptococcal throat infections and mainly occurs in HLA-Cw6(+) patients, the specific immunologic response to this innate stimulus that causes these skin lesions is poorly understood. OBJECTIVE This study aims to elucidate how key cellular elements of patients with GP respond to Streptococcus pyogenes and whether this initial immune response is favored by the genetic and environmental background of these patients. METHODS Circulating memory T cells and autologous epidermal cells from samples from either patients with GP (n = 14) or healthy control subjects (n = 6) were cocultured ex vivo in the presence of an S pyogenes extract. Levels of the psoriasis-associated cytokines IL-17A, IL-17F, IFN-γ, TNF-α, IL-6, and IL-8 were determined. The expression of several genes with increased (DEFB4, S100A7, LCN2, IL36G, IL8, CXCL9, CXCL10, and CXCL11) or decreased (FLG and LOR) transcripts in psoriatic lesions was examined in keratinocytes treated with coculture supernatants. RESULTS When skin-homing effector memory cutaneous lymphocyte antigen-positive T cells were used in cocultures, a TH17-dominant response was observed, as reflected by the higher amounts of IL-17A and IL-17F than IFN-γ. Moreover, a higher TH17 response was observed in cells isolated from patients with flares associated with a streptococcal tonsillitis and with the HLA-Cw6 allele (cohort 1). In addition, in normal keratinocytes the supernatants from these cocultures induced an increase in IL-17-associated genes, such as DEFB4, S100A7, LCN2, IL36G, and IL8 but a decrease in FLG and LOR, thereby confirming the role of activated TH17 cells. CONCLUSION This study reveals a dominant TH17 response of cutaneous lymphocyte antigen-positive T cells activated by epidermal cells and S pyogenes in patients with GP.
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Affiliation(s)
- Ester Ruiz-Romeu
- Translational Immunology, Department of Cellular Biology, Physiology and Immunology, Universitat de Barcelona, Barcelona, Spain
| | - Marta Ferran
- Department of Dermatology, Hospital del Mar, Research Group in Inflammatory Dermatologic Diseases, IMIM, Universitat Autònoma de Barcelona, Barcelona, Spain
| | | | - Julià Gómez
- Laboratori de Referència de Catalunya, El Prat de Llobregat, Barcelona, Spain
| | - Ana Giménez-Arnau
- Department of Dermatology, Hospital del Mar, Research Group in Inflammatory Dermatologic Diseases, IMIM, Universitat Autònoma de Barcelona, Barcelona, Spain
| | - Krisztina Herszenyi
- Department of Dermatovenerology and Oncodermatolgy, Semmelweis Egyetem, Budapest, Hungary
| | - Péter Hóllo
- Department of Dermatovenerology and Oncodermatolgy, Semmelweis Egyetem, Budapest, Hungary
| | - Antonio Celada
- Macrophage Biology, Department of Cellular Biology, Physiology and Immunology, Universitat de Barcelona, Barcelona, Spain
| | - Ramon Pujol
- Department of Dermatology, Hospital del Mar, Research Group in Inflammatory Dermatologic Diseases, IMIM, Universitat Autònoma de Barcelona, Barcelona, Spain
| | - Luis F Santamaria-Babí
- Translational Immunology, Department of Cellular Biology, Physiology and Immunology, Universitat de Barcelona, Barcelona, Spain.
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22
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Abstract
Chemokines and their receptors are known to play important roles in disease. More than 40 chemokine ligands and 20 chemokine receptors have been identified, but, to date, only two small molecule chemokine receptor antagonists have been approved by the FDA. The chemokine receptor CXCR3 was identified in 1996, and nearly 20 years later, new areas of CXCR3 disease biology continue to emerge. Several classes of small molecule CXCR3 antagonists have been developed, and two have shown efficacy in preclinical models of inflammatory disease. However, only one CXCR3 antagonist has been evaluated in clinical trials, and there remain many opportunities to further investigate known classes of CXCR3 antagonists and to identify new chemotypes. This Perspective reviews the known CXCR3 antagonists and considers future opportunities for the development of small molecules for clinical evaluation.
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Affiliation(s)
- Stephen P Andrews
- Heptares Therapeutics , BioPark, Broadwater Road, Welwyn Garden City, AL7 3AX, United Kingdom
| | - Rhona J Cox
- Respiratory, Inflammation & Autoimmunity iMed, AstraZeneca, Respiratory, Inflammation & Autoimmunity IMED , Pepparedsleden, 431 83 Mölndal, Sweden
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23
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Koga A, Kajihara I, Yamada S, Makino K, Ichihara A, Aoi J, Makino T, Fukushima S, Jinnin M, Ihn H. Enhanced CCR9 expression levels in psoriatic skin are associated with poor clinical outcome to infliximab treatment. J Dermatol 2015; 43:522-5. [PMID: 26507968 DOI: 10.1111/1346-8138.13178] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2015] [Accepted: 09/09/2015] [Indexed: 12/26/2022]
Abstract
Infliximab is an anti-tumor necrosis factor (TNF)-α antibody drug that suppresses TNF-α and its associated inflammatory responses. Although infliximab therapy generally results in a 75% or greater improvement in the Psoriasis Area and Severity Index from baseline in psoriasis patients, there is the heterogeneity of therapeutic efficacy in psoriasis patients among patients of a similar PASI baseline score. However, there are few published reports about the predictors of the clinical response among psoriasis patients who undergo biologic therapies. We thus evaluated the possible existence of biologic markers that would indicate poor prognosis of infliximab using skin biopsy specimens. This was because we assumed that the inhibitors for upregulated chemokine/chemokine receptors in non-responders may have the ability to reduce the occurrence of psoriatic eruptions. PCR array analyses identified that the levels of various chemokines and chemokine receptors were increased in non-responders in comparison to responders. Immunohistochemical analyses revealed that upregulation of the CCR9 protein levels was not associated with the pretherapeutic PASI score, but with poor response to infliximab. Our results indicated that the expression levels of CCR9 in lesional skin may be a useful biologic marker of the clinical efficacy of infliximab therapy in psoriasis patients.
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Affiliation(s)
- Aiko Koga
- Department of Dermatology and Plastic Surgery, Faculty of Life Sciences, Kumamoto University, Kumamoto, Japan
| | - Ikko Kajihara
- Department of Dermatology and Plastic Surgery, Faculty of Life Sciences, Kumamoto University, Kumamoto, Japan
| | - Saori Yamada
- Department of Dermatology and Plastic Surgery, Faculty of Life Sciences, Kumamoto University, Kumamoto, Japan
| | - Katsunari Makino
- Department of Dermatology and Plastic Surgery, Faculty of Life Sciences, Kumamoto University, Kumamoto, Japan
| | - Asako Ichihara
- Department of Dermatology and Plastic Surgery, Faculty of Life Sciences, Kumamoto University, Kumamoto, Japan
| | - Jun Aoi
- Department of Dermatology and Plastic Surgery, Faculty of Life Sciences, Kumamoto University, Kumamoto, Japan
| | - Takamitsu Makino
- Department of Dermatology and Plastic Surgery, Faculty of Life Sciences, Kumamoto University, Kumamoto, Japan
| | - Satoshi Fukushima
- Department of Dermatology and Plastic Surgery, Faculty of Life Sciences, Kumamoto University, Kumamoto, Japan
| | - Masatoshi Jinnin
- Department of Dermatology and Plastic Surgery, Faculty of Life Sciences, Kumamoto University, Kumamoto, Japan
| | - Hironobu Ihn
- Department of Dermatology and Plastic Surgery, Faculty of Life Sciences, Kumamoto University, Kumamoto, Japan
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24
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Lima X, Cintra M, Piaza A, Mamoni R, Oliveira R, Magalhães R, Blotta M. Frequency and characteristics of circulating CD4+
CD28null
T cells in patients with psoriasis. Br J Dermatol 2015; 173:998-1005. [DOI: 10.1111/bjd.13993] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/16/2015] [Indexed: 12/24/2022]
Affiliation(s)
- X.T. Lima
- Department of Clinical Pathology; University of Campinas (UNICAMP); Campinas São Paulo Brazil
- Department of Dermatology; University of Campinas (UNICAMP); Campinas São Paulo Brazil
- School of Medicine; University of Fortaleza (UNIFOR); Fortaleza Ceará Brazil
| | - M.L. Cintra
- Department of Clinical Pathology; University of Campinas (UNICAMP); Campinas São Paulo Brazil
| | - A.C. Piaza
- Department of Clinical Pathology; University of Campinas (UNICAMP); Campinas São Paulo Brazil
| | - R.L. Mamoni
- Department of Clinical Pathology; University of Campinas (UNICAMP); Campinas São Paulo Brazil
| | - R.T. Oliveira
- Department of Clinical Pathology; University of Campinas (UNICAMP); Campinas São Paulo Brazil
| | - R.F. Magalhães
- Department of Dermatology; University of Campinas (UNICAMP); Campinas São Paulo Brazil
| | - M.H. Blotta
- Department of Clinical Pathology; University of Campinas (UNICAMP); Campinas São Paulo Brazil
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25
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Ferrari SM, Ruffilli I, Colaci M, Antonelli A, Ferri C, Fallahi P. CXCL10 in psoriasis. Adv Med Sci 2015; 60:349-54. [PMID: 26318079 DOI: 10.1016/j.advms.2015.07.011] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2015] [Revised: 07/28/2015] [Accepted: 07/30/2015] [Indexed: 02/08/2023]
Abstract
Chemokine (C-X-C motif) ligand (CXCL)10 is involved in the pathogenesis of psoriasis. It has been demonstrated that chemokine (C-X-C motif) receptors (CXCR)3 and CXCL10 were detected in keratinocytes and the dermal infiltrate obtained from active psoriatic plaques and that successful treatment of active plaques decreased the expression of CXCL10. Elevated CXCL10 serum levels have been shown in patients with psoriasis, with a type 1 T helper cells immune predominance at the beginning of the disease, while a decline of this chemokine has been evidenced later, in long lasting psoriasis. Circulating CXCL10 is significantly higher in patients with psoriasis in the presence of autoimmune thyroiditis. It has been hypothesized that CXCL10 could be a good marker to monitor the activity or progression of psoriasis. Efforts have been made to modulate or inhibit the CXCR3/CXCL10 axis in psoriasis to modify the course of the disease.
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Mladic M, Scholten DJ, Wijtmans M, Falck D, Leurs R, Niessen WMA, Smit MJ, Kool J. Metabolic profiling of ligands for the chemokine receptor CXCR3 by liquid chromatography-mass spectrometry coupled to bioaffinity assessment. Anal Bioanal Chem 2015; 407:7067-81. [PMID: 26164305 PMCID: PMC4551560 DOI: 10.1007/s00216-015-8867-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2015] [Revised: 06/16/2015] [Accepted: 06/18/2015] [Indexed: 01/08/2023]
Abstract
Chemokine receptors belong to the class of G protein-coupled receptors and are important in the host defense against infections and inflammation. However, aberrant chemokine signaling is linked to different disorders such as cancer, central nervous system and immune disorders, and viral infections [Scholten DJ et al. (2012) Br J Pharmacol 165(6):1617–1643]. Modulating the chemokine receptor function provides new ways of targeting specific diseases. Therefore, discovery and development of drugs targeting chemokine receptors have received considerable attention from the pharmaceutical industry in the past decade. Along with that, the determination of bioactivities of individual metabolites derived from lead compounds towards chemokine receptors is crucial for drug selectivity, pharmacodynamics, and potential toxicity issues. Therefore, advanced analytical methodologies are in high demand. This study is aimed at the optimization of a new analytical method for metabolic profiling with parallel bioaffinity assessment of CXCR3 ligands of the azaquinazolinone and piperazinyl-piperidine class and their metabolites. The method is based on mass spectrometric (MS) identification after liquid chromatographic (LC) separation of metabolic mixtures. The bioaffinity assessment is performed “at-line” via high-resolution nanofractionation onto 96-well plates allowing direct integration of radioligand binding assays. This new method enables identification of metabolites from lead compounds with associated estimation of their individual bioaffinity. Moreover, the identification of the metabolite structures via accurate mass measurements and MS2 allows the identification of liable metabolic “hotspots” for further lead optimization. The efficient combination of chemokine receptor ligand binding assays with analytical techniques, involving nanofractionation as linking technology, allows implementation of comprehensive metabolic profiling in an early phase of the drug discovery process.
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Affiliation(s)
- Marija Mladic
- />Division of BioAnalytical Chemistry, Amsterdam Institute for Molecules Medicines and Systems, VU University Amsterdam, De Boelelaan 1083, 1081HV Amsterdam, The Netherlands
- />Division of Medicinal Chemistry, Amsterdam Institute for Molecules Medicines and Systems, VU University Amsterdam, De Boelelaan 1083, 1081HV Amsterdam, The Netherlands
| | - Danny J. Scholten
- />Division of Medicinal Chemistry, Amsterdam Institute for Molecules Medicines and Systems, VU University Amsterdam, De Boelelaan 1083, 1081HV Amsterdam, The Netherlands
| | - Maikel Wijtmans
- />Division of Medicinal Chemistry, Amsterdam Institute for Molecules Medicines and Systems, VU University Amsterdam, De Boelelaan 1083, 1081HV Amsterdam, The Netherlands
| | - David Falck
- />Division of BioAnalytical Chemistry, Amsterdam Institute for Molecules Medicines and Systems, VU University Amsterdam, De Boelelaan 1083, 1081HV Amsterdam, The Netherlands
| | - Rob Leurs
- />Division of Medicinal Chemistry, Amsterdam Institute for Molecules Medicines and Systems, VU University Amsterdam, De Boelelaan 1083, 1081HV Amsterdam, The Netherlands
| | - Wilfried M. A. Niessen
- />Division of BioAnalytical Chemistry, Amsterdam Institute for Molecules Medicines and Systems, VU University Amsterdam, De Boelelaan 1083, 1081HV Amsterdam, The Netherlands
- />hyphen MassSpec, de Wetstraat 8, 2332 XT Leiden, The Netherlands
| | - Martine J. Smit
- />Division of Medicinal Chemistry, Amsterdam Institute for Molecules Medicines and Systems, VU University Amsterdam, De Boelelaan 1083, 1081HV Amsterdam, The Netherlands
| | - Jeroen Kool
- />Division of BioAnalytical Chemistry, Amsterdam Institute for Molecules Medicines and Systems, VU University Amsterdam, De Boelelaan 1083, 1081HV Amsterdam, The Netherlands
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Boehncke WH, Qureshi A, Merola JF, Thaçi D, Krueger GG, Walsh J, Kim N, Gottlieb AB. Diagnosing and treating psoriatic arthritis: an update. Br J Dermatol 2015; 170:772-86. [PMID: 24266754 DOI: 10.1111/bjd.12748] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/18/2013] [Indexed: 12/14/2022]
Abstract
Psoriatic arthritis (PsA) is an inflammatory arthritis of uncertain pathogenesis, affecting approximately one in four patients with psoriasis. Onset of psoriasis typically precedes the development of PsA. Therefore, the dermatologist is ideally positioned to recognize the early signs and symptoms of PsA for diagnosis and subsequent treatment. The role of the dermatologist in early diagnosis and treatment is essential for preventing pain and functional disabilities, as well as the joint deterioration that accompanies progressive forms of PsA. Diagnosis of PsA is a key aspect of the clinical decision process for the dermatologist, as psoriasis plus PsA requires a different therapeutic approach from that required for psoriasis alone. Furthermore, PsA is associated with an increased risk of cardiovascular comorbidities that present significant health concerns. In this review, the pathogenesis and comorbidities of PsA are discussed. In addition, screening and imaging tools that aid in the diagnosis of PsA, as well as tools used for efficacy assessment, are reviewed. Available therapies are presented, with a focus on targeted biologics and emerging treatments.
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Affiliation(s)
- W H Boehncke
- Geneva University Hospital, Rue Gabrielle Perret-Gentil 4, 1211, Geneva 14, Switzerland
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Tan Y, Wang Y, Li L, Xia J, Peng S, He Y. Chemokine-like factor 1-derived C-terminal peptides induce the proliferation of dermal microvascular endothelial cells in psoriasis. PLoS One 2015; 10:e0125073. [PMID: 25915746 PMCID: PMC4410955 DOI: 10.1371/journal.pone.0125073] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2014] [Accepted: 03/19/2015] [Indexed: 11/18/2022] Open
Abstract
Psoriasis is an inflammatory disease characterized by the abnormal proliferation of skin cells, including dermal microvascular endothelial cells. Recently, chemokine-like factor 1 (CKLF1) was found to participate in the local inflammation and cell proliferation. To explore its role in the pathogenesis of psoriasis, the expression of both CKLF1 and its receptor (CCR4) was determined in the psoriatic lesions. Also, the effect of the C-terminal peptides (C19 and C27) of CKLF1 on the proliferation of human umbilical vein endothelial cells was studied in vitro. By immunohistochemistry and immunofluorescence, the expression of both CKLF1 and CCR4 was determined in the psoriatic lesions. The effect of C-terminal peptides on human umbilical vein endothelial cells (HUVECs) was studied in vitro by the evaluation of cell proliferation and apoptosis. The in vivo assessment was performed accordingly through the subcutaneous injection peptides on BALB/c mice. The results showed that, by immunohistochemistry, both CKLF1 and CCR4 were increasingly expressed in psoriatic lesions as compared to normal skins. Moreover, the primary umbilical vein endothelial cells exhibited higher proliferation ratio under the C19 or C27 stimulation, which was even enhanced by the addition of psoriatic sera or TNF-α. Furthermore, the enhancement of peptide simulation was accompanied with the activation of ERK1/2-MAPKs pathway. In addition, such effect of C19 and C27 was mirrored by the hyperproliferation of cutaneous microvessels in BALB/c mice that were subcutaneously injected with the two peptides. Therefore, we concluded that CKLF1 plays a role in the pathogenesis of psoriasis by promoting the proliferation of microvascular endothelial cells that possibly correlates with ERK1/2-MAPKs activation.
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Affiliation(s)
- Yaqi Tan
- Department of Dermatology, Beijing Chao-Yang Hospital, Capital Medical University, Beijing, China
| | - Yixuan Wang
- Department of Dermatology, Beijing Chao-Yang Hospital, Capital Medical University, Beijing, China
| | - Li Li
- Department of Dermatology, Beijing Chao-Yang Hospital, Capital Medical University, Beijing, China
| | - Jinyu Xia
- Department of Dermatology, Beijing Chao-Yang Hospital, Capital Medical University, Beijing, China
| | - Shiguang Peng
- Department of Dermatology, Beijing Chao-Yang Hospital, Capital Medical University, Beijing, China
| | - Yanling He
- Department of Dermatology, Beijing Chao-Yang Hospital, Capital Medical University, Beijing, China
- * E-mail:
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Egbuniwe IU, Karagiannis SN, Nestle FO, Lacy KE. Revisiting the role of B cells in skin immune surveillance. Trends Immunol 2015; 36:102-11. [PMID: 25616715 DOI: 10.1016/j.it.2014.12.006] [Citation(s) in RCA: 59] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2014] [Revised: 12/18/2014] [Accepted: 12/18/2014] [Indexed: 12/18/2022]
Abstract
Whereas our understanding of the skin immune system has increased exponentially in recent years, the role of B cells in cutaneous immunity remains poorly defined. Recent studies have revealed the presence of B cells within lymphocytic infiltrates in chronic inflammatory skin diseases and cutaneous malignancies including melanoma, and have examined their functional significance in these settings. We review these findings and discuss them in the context of the current understanding of the role of B cells in normal skin physiology, as well as in both animal and human models of skin pathology. We integrate these findings into a model of cutaneous immunity wherein crosstalk between B cells and other skin-resident immune cells plays a central role in skin immune homeostasis.
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Affiliation(s)
- Isioma U Egbuniwe
- Cutaneous Medicine and Immunotherapy Unit, St. John's Institute of Dermatology, Division of Genetics and Molecular Medicine, and National Institute for Health Research (NIHR) Biomedical Research Centre at Guy's and St Thomas' Hospitals and King's College London, London SE1 9RT, UK
| | - Sophia N Karagiannis
- Cutaneous Medicine and Immunotherapy Unit, St. John's Institute of Dermatology, Division of Genetics and Molecular Medicine, and National Institute for Health Research (NIHR) Biomedical Research Centre at Guy's and St Thomas' Hospitals and King's College London, London SE1 9RT, UK
| | - Frank O Nestle
- Cutaneous Medicine and Immunotherapy Unit, St. John's Institute of Dermatology, Division of Genetics and Molecular Medicine, and National Institute for Health Research (NIHR) Biomedical Research Centre at Guy's and St Thomas' Hospitals and King's College London, London SE1 9RT, UK.
| | - Katie E Lacy
- Cutaneous Medicine and Immunotherapy Unit, St. John's Institute of Dermatology, Division of Genetics and Molecular Medicine, and National Institute for Health Research (NIHR) Biomedical Research Centre at Guy's and St Thomas' Hospitals and King's College London, London SE1 9RT, UK.
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Lima XT, Oliveira RTD, Braga FG, Magalhães RF, Mamoni RL, Blotta MHSL. Circulating levels of chemokines in psoriasis. Autoimmunity 2014; 48:57-60. [DOI: 10.3109/08916934.2014.947476] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Geskin LJ, Akilov OE, Lin Y, Lokshin AE. Distinct age-matched serum biomarker profiles in patients with cutaneous T-cell lymphoma. Exp Dermatol 2014; 23:598-600. [PMID: 24862743 DOI: 10.1111/exd.12455] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/23/2014] [Indexed: 11/28/2022]
Abstract
Immunological functions decline with age. Because MS/SzS predominately affects the elderly, it is important to distinguish age-related from cancer-specific changes. Also, MF and SzS are malignancies of CD4(+) T-lymphocytes, further compromising an immune state of the patients. The objectives of this study were to distinguish disease-specific immunological deterioration by performing comparative age-matched Luminex multiplex assessment of 34 serum biomarkers between patients with MF/SzS, HIV-infected individuals and normal controls. Controlling for age, expression level appears to significantly differ between patients with MF/SzS and controls for the following biomarkers: G-CSF, IL-5, MIP-1β, TNF-α, VEGF, EOTAXIN, IL-8, IL-12, IL-2R, IP10, MCP-1, MIG, TNFR1 and TNFR2 (P < 0.05), while others showed normal age-related changes. Interestingly, cluster analysis placed MF/SzS profiles closer to HIV. This further underscores an immunologically compromised state of patients with MF/SzS and suggests its potential self-perpetuating role in disease progression.
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Affiliation(s)
- Larisa J Geskin
- Department of Dermatology, University of Pittsburgh, Pittsburgh, PA, USA; Department of Dermatology, Columbia University, New York, NY, USA
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Al-Banna NA, Vaci M, Slauenwhite D, Johnston B, Issekutz TB. CCR4 and CXCR3 play different roles in the migration of T cells to inflammation in skin, arthritic joints, and lymph nodes. Eur J Immunol 2014; 44:1633-43. [PMID: 24700244 DOI: 10.1002/eji.201343995] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2013] [Revised: 02/04/2014] [Accepted: 03/27/2014] [Indexed: 12/17/2022]
Abstract
CCR4 and CXCR3 are expressed on several T-cell subsets in inflamed tissues, yet their role in tissue-specific recruitment is unclear. We examined the contributions of CCR4 and CXCR3 to T-cell recruitment into inflamed joints in collagen-induced arthritis, antigen-draining lymph nodes (LNs) and dermal inflammatory sites (poly I:C, LPS, concanavalin A, and delayed type hypersensitivity), using labeled activated T cells from CXCR3(-/-), CCR4(-/-), and WT mice. Both CXCR3 and CCR4 deficiency reduced the development of arthritis, but did not affect Th1-cell recruitment to the inflamed joints. Accumulation in inflamed LNs was highly CXCR3 dependent. In contrast, CCR4-deficient Th1 cells had an increased accumulation in these LNs. Migration to all four dermal inflammatory sites by activated Th1 and T cytotoxic cells and memory CD4(+) T cells was partially CXCR3-dependent, but Treg-cell migration was independent of CXCR3. The subset of cells expressing CCR4 has skin-migrating properties, but CCR4 itself is not required for the migration. Thus, migration into these inflamed tissues is CCR4-independent, and partially dependent on CXCR3, except for Treg cells, which require neither receptor. CCR4 may therefore affect retention of T cells in different tissues rather than trafficking out of the blood.
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Affiliation(s)
- Nadia A Al-Banna
- Department of Microbiology and Immunology, Dalhousie University, Halifax, Canada
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33
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Chemokines and cytokines network in the pathogenesis of the inflammatory skin diseases: atopic dermatitis, psoriasis and skin mastocytosis. Postepy Dermatol Alergol 2014; 31:84-91. [PMID: 25097473 PMCID: PMC4112246 DOI: 10.5114/pdia.2014.40920] [Citation(s) in RCA: 203] [Impact Index Per Article: 20.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2013] [Revised: 04/12/2013] [Accepted: 06/23/2013] [Indexed: 01/13/2023] Open
Abstract
Chemokines are signaling peptides which regulate cell trafficking and provide control of the tissue-specific cell homing. In the skin, chemokines are secreted both by the resident cells such as keratinocytes, melanocytes, fibroblasts, dendritic cells and mast cells, as well as by infiltrated cells – lymphocytes, eosinophils, and monocytes. Chemokines, together with cytokines, participate in induction and maintenance of inflammation in the skin and regulate the composition of the cellular infiltrates. Inflammation within the skin is a feature shared by atopic dermatitis and psoriasis, two of the most common dermatoses. Accumulation of activated mast cells in the affected skin is seen both in atopic dermatitis and in psoriasis. This paper presents a concise overview of the current knowledge on the role chemokines have in pathogenesis of atopic dermatitis, psoriasis, and mastocytosis, a disease caused directly by the accumulation and activation of mast cells in the skin.
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34
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Roy I, Evans DB, Dwinell MB. Chemokines and chemokine receptors: update on utility and challenges for the clinician. Surgery 2014; 155:961-73. [PMID: 24856117 DOI: 10.1016/j.surg.2014.02.006] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2013] [Accepted: 02/05/2014] [Indexed: 11/26/2022]
Affiliation(s)
- Ishan Roy
- Department of Microbiology and Molecular Genetics, Medical College of Wisconsin, Milwaukee, WI
| | - Douglas B Evans
- Department of Surgery, Medical College of Wisconsin, Milwaukee, WI
| | - Michael B Dwinell
- Department of Microbiology and Molecular Genetics, Medical College of Wisconsin, Milwaukee, WI.
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35
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Nair AG, Wong MKC, Shu Y, Jiang Y, Jenh CH, Kim SH, Yang DY, Zeng Q, Shao Y, Zawacki LG, Duo J, McGuinness BF, Carroll CD, Hobbs DW, Shih NY, Rosenblum SB, Kozlowski JA. IV. Discovery of CXCR3 antagonists substituted with heterocycles as amide surrogates: improved PK, hERG and metabolic profiles. Bioorg Med Chem Lett 2014; 24:1085-8. [PMID: 24486132 DOI: 10.1016/j.bmcl.2014.01.009] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2013] [Revised: 01/03/2014] [Accepted: 01/06/2014] [Indexed: 11/29/2022]
Abstract
The structure-human CXCR3 binding affinity relationship of a series of pyridyl/pyrazinyl-piperazinyl-piperidine derivatives were explored with a focus to improve PK, hERG and metabolic profiles. Several small heterocycles were identified as amide surrogates, which minimized many potential metabolite issues. During the course of SAR development, we have observed the additive effect of desirable functional groups to improve hERG and PK profiles which lead to the discovery of many clinically developable CXCR3 antagonists with excellent overall profile.
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Affiliation(s)
- Anilkumar G Nair
- Merck Research Laboratories, 2015 Galloping Hill Road, Kenilworth, NJ 07033, USA.
| | - Michael K C Wong
- Merck Research Laboratories, 2015 Galloping Hill Road, Kenilworth, NJ 07033, USA
| | - Youheng Shu
- Merck Research Laboratories, 2015 Galloping Hill Road, Kenilworth, NJ 07033, USA
| | - Yueheng Jiang
- Merck Research Laboratories, 2015 Galloping Hill Road, Kenilworth, NJ 07033, USA
| | - Chung-Her Jenh
- Merck Research Laboratories, 2015 Galloping Hill Road, Kenilworth, NJ 07033, USA
| | - Seong Heon Kim
- Merck Research Laboratories, 2015 Galloping Hill Road, Kenilworth, NJ 07033, USA
| | - De-Yi Yang
- Merck Research Laboratories, 2015 Galloping Hill Road, Kenilworth, NJ 07033, USA
| | - Qingbei Zeng
- Merck Research Laboratories, 2015 Galloping Hill Road, Kenilworth, NJ 07033, USA
| | - Yuefei Shao
- Ligand Pharmaceuticals, 3000 Eastpark Boulevard, Cranbury, NJ 08512, USA
| | - Lisa Guise Zawacki
- Ligand Pharmaceuticals, 3000 Eastpark Boulevard, Cranbury, NJ 08512, USA
| | - Jingqi Duo
- Ligand Pharmaceuticals, 3000 Eastpark Boulevard, Cranbury, NJ 08512, USA
| | - Brian F McGuinness
- Ligand Pharmaceuticals, 3000 Eastpark Boulevard, Cranbury, NJ 08512, USA
| | | | - Doug W Hobbs
- Ligand Pharmaceuticals, 3000 Eastpark Boulevard, Cranbury, NJ 08512, USA
| | - Neng-Yang Shih
- Merck Research Laboratories, 2015 Galloping Hill Road, Kenilworth, NJ 07033, USA
| | - Stuart B Rosenblum
- Merck Research Laboratories, 2015 Galloping Hill Road, Kenilworth, NJ 07033, USA
| | - Joseph A Kozlowski
- Merck Research Laboratories, 2015 Galloping Hill Road, Kenilworth, NJ 07033, USA
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Comerford I, Kara EE, McKenzie DR, McColl SR. Advances in understanding the pathogenesis of autoimmune disorders: focus on chemokines and lymphocyte trafficking. Br J Haematol 2013; 164:329-41. [PMID: 24164387 DOI: 10.1111/bjh.12616] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Lymphocyte trafficking is a key step in the pathogenesis of various autoimmune diseases. Recruitment of autoreactive lymphocytes to inflamed tissues is a defining feature of numerous persistent organ-specific autoimmune conditions and various therapies are now used in several of these diseases which appear to specifically block lymphocyte migration. Thus, better understanding of the molecular events involved in homing of autoreactive pathogenic lymphocytes may present novel opportunities for pharmacological intervention in autoimmune diseases, such as multiple sclerosis, rheumatoid arthritis, type-1 diabetes and psoriasis. This review describes recent progress in understanding lymphocyte trafficking in autoimmunity, focusing on the involvement of the chemokine and chemokine receptor superfamily. Possible strategies to improve therapeutics for autoimmune diseases arising from these studies are discussed.
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Affiliation(s)
- Iain Comerford
- Chemokine Biology Laboratory, School of Molecular and Biomedical Science, Centre for Molecular Pathology, The University of Adelaide, Adelaide, SA, Australia
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Abstract
The role of T cell subpopulations in human disease is in a transition phase due to continuous discovery of new subsets of T cell, one of which is Th17, characterized by the production of signature cytokine IL-17. In the last couple of years, many articles are coming out on the role of Th17 and its signature cytokine IL-17 in different autoimmune diseases like rheumatoid arthritis, psoriasis, psoriatic arthritis (PsA), SLE and multiple sclerosis. Psoriasis and PsA are immune-mediated diseases, affecting the skin and joints, respectively. Initially, it was thought that psoriasis and PsA were Th1-mediated diseases; however, studies in knockout animal models (IL-17 knockout mice) as well as human experimental data indicate that Th17 and its signature cytokine IL-17 have a critical role in the pathogenesis of psoriatic disease. Th17 cells have been identified from the dermal extracts of psoriatic lesions. Subsequently, our research group has substantiated this observation that Th17 cells are enriched in the papillary dermis of psoriatic plaques and in freshly isolated effector T lymphocytes from the synovial fluid of PsA patients, and we have reported that the majority of these CD4 + IL-17+ T cells are of memory phenotype (CD4RO(+)CD45RA(-)CD11a(+)). Recent reports also suggest that the synovial tissue in psoriatic arthritis is enriched with IL-17R, and its most well recognized receptor IL-17RA is functionally active in psoriatic arthritis. In this review article, we have discussed the role of IL-17 in psoriatic disease and have narrated about the novel IL17/IL-17R antibodies currently in preparation for its therapeutic uses in autoimmune diseases.
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Peters JH, Tjabringa GS, Fasse E, de Oliveira VL, Schalkwijk J, Koenen HJ, Joosten I. Co-culture of healthy human keratinocytes and T-cells promotes keratinocyte chemokine production and RORγt-positive IL-17 producing T-cell populations. J Dermatol Sci 2013; 69:44-53. [DOI: 10.1016/j.jdermsci.2012.10.004] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2012] [Revised: 10/08/2012] [Accepted: 10/09/2012] [Indexed: 12/27/2022]
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Loss of extracellular superoxide dismutase induces severe IL-23-mediated skin inflammation in mice. J Invest Dermatol 2012; 133:732-741. [PMID: 23223134 DOI: 10.1038/jid.2012.406] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Psoriasis is a common chronic and complex autoimmune inflammatory skin disorder. The histological characteristics of psoriasis are epidermal hyperplasia, mononuclear leukocyte infiltration into the dermis, and increased angiogenesis. However, the mechanisms involved in the pathogenesis of psoriasis remain unclear. Extracellular superoxide dismutase (EC-SOD) has antichemotactic activities. Because immune cell infiltration is seen in psoriatic lesions and psoriasis patients express low levels of EC-SOD, we hypothesized that the lack of EC-SOD induces more severe IL-23-mediated psoriasis-like skin inflammation. To test this hypothesis, we determined whether the loss of EC-SOD causes more severe IL-23-induced skin inflammation. Ear skin after IL-23 administration was thicker in EC-SOD knockout (KO) mice compared with wild-type mice. In addition, infiltration of CD4(+) T cells, macrophages, and dendritic cells (DCs) into IL-23 injection sites was more elevated in EC-SOD KO mice. The expression of proinflammatory cytokines and chemokines was also more elevated in EC-SOD KO mice, and EC-SOD KO DCs expressed a higher level of MHCII. Finally, EC-SOD transgenic mice showed much less severe IL-23-induced skin inflammation. Therefore, EC-SOD may inhibit IL-23-induced psoriasis-like inflammation through the inhibition of immune cell infiltration and immune responses. These results suggest that EC-SOD could be a possible candidate for management of psoriasis.
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Lee CH, Hwang STY. Pathophysiology of chemokines and chemokine receptors in dermatological science: A focus on psoriasis and cutaneous T-cell lymphoma. DERMATOL SIN 2012. [DOI: 10.1016/j.dsi.2012.08.004] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
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Gennari A, Ban M, Braun A, Casati S, Corsini E, Dastych J, Descotes J, Hartung T, Hooghe-Peters R, House R, Pallardy M, Pieters R, Reid L, Tryphonas H, Tschirhart E, Tuschl H, Vandebriel R, Gribaldo L. The Use of In Vitro Systems for Evaluating Immunotoxicity: The Report and Recommendations of an ECVAM Workshop. J Immunotoxicol 2012; 2:61-83. [PMID: 18958661 DOI: 10.1080/15476910590965832] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
Abstract
This is the report of a workshop organised by the European Centre for the Validation of Alternative Methods (ECVAM). ECVAM's main goal, as defined in 1993 by its Scientific Advisory Committee, is to promote the scientific and regulatory acceptance of alternative methods that are of importance to the biosciences and which replace, reduce or refine the use of laboratory animals. One of the first priorities set by ECVAM was the implementation of procedures that would enable it to become well informed about the state-of-the-art of non-animal test development and validation, and the potential for the possible incorporation of alternative tests into regulatory procedures. It was decided that this would be best achieved by the organization of ECVAM workshops on specific topics, at which small groups of invited experts would review the current status of various types of in vitro tests and their potential uses, and make recommendations about the best ways forward (Anonymous, 1994). The workshop on "The use of in vitro systems for evaluating Immunotoxicity" was held at ECVAM (Ispra), Italy, on 24th-26th November 2003. The participants represented academia, national organizations, international regulatory bodies and industry. The aim of the workshop was to review the state-of-the-art in the field of in vitro immunotoxicology, and to develop strategies towards the replacement of in vivo testing. At the end of this report are listed the recommendations that should be considered for prevalidation and validation of relevant and reliable procedures, that could replace the use of animals in chemical and cosmetics toxicity testing.
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Gehad A, Al-Banna NA, Vaci M, Issekutz AC, Mohan K, Latta M, Issekutz TB. Differing requirements for CCR4, E-selectin, and α4β1 for the migration of memory CD4 and activated T cells to dermal inflammation. THE JOURNAL OF IMMUNOLOGY 2012; 189:337-46. [PMID: 22664869 DOI: 10.4049/jimmunol.1102315] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
CCR4 on T cells is suggested to mediate skin homing in mice. Our objective was to determine the interaction of CCR4, E-selectin ligand (ESL), and α(4)β(1) on memory and activated T cells in recruitment to dermal inflammation. mAbs to rat CCR4 were developed. CCR4 was on 5-21% of memory CD4 cells, and 20% were also ESL(+). Anti-TCR-activated CD4 and CD8 cells were 40-55% CCR4(+), and ∼75% of both CCR4(+) and CCR4(-) cells were ESL(+). CCR4(+) memory CD4 cells migrated 4- to 7-fold more to dermal inflammation induced by IFN-γ, TNF, TLR agonists, and delayed-type hypersensitivity than CCR4(-) cells. CCR4(+) activated CD4 cells migrated only 5-50% more than CCR4(-) cells to these sites. E-selectin blockade inhibited ∼60% of CCR4(+) activated CD4 cell migration but was less effective on memory cells where α(4)β(1) was more important. Anti-α(4)β(1) also inhibited CCR4(-) activated CD4 cells more than CCR4(+) cells. Anti-E-selectin reduced activated CD8 more than CD4 cell migration. These findings modify our understanding of CCR4, ESL, α(4)β(1), and dermal tropism. There is no strict relationship between CCR4 and ESL for skin homing of CD4 cells, because the activation state and inflammatory stimulus are critical determinants. Dermal homing memory CD4 cells express CCR4 and depend more on α(4)β(1) than ESL. Activated CD4 cells do not require CCR4, but CCR4(+) cells are more dependent on ESL than on α(4)β(1), and CCR4(-) cells preferentially use α(4)β(1). The differentiation from activated to memory CD4 cells increases the dependence on CCR4 for skin homing and decreases the requirement for ESL.
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Affiliation(s)
- Ahmed Gehad
- Department of Pediatrics, Faculty of Medicine, Dalhousie University, Halifax, Nova Scotia B3K 6R8, Canada
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CXCL16 and CXCR6 Are Upregulated in Psoriasis and Mediate Cutaneous Recruitment of Human CD8+ T Cells. J Invest Dermatol 2012; 132:626-34. [DOI: 10.1038/jid.2011.371] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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Abstract
Cytokines are produced transiently by cutaneous cells in response to immune stimuli. They are non-immunoglobulin proteins and glycoproteins. Cytokines, which are signaling molecules, act by sending downstream signals to various cells through a number of signal transduction pathways and by binding to cytokine receptors on the surface of cells. Cytokines regulate immunity and inflammation and thus play an important role in the pathogenesis of various cutaneous disorders.
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Affiliation(s)
- Arijit Coondoo
- From the Department of Dermatology, KPC Medical College, Kolkata, West Bengal, India
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48
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Mabuchi T, Chang TW, Quinter S, Hwang ST. Chemokine receptors in the pathogenesis and therapy of psoriasis. J Dermatol Sci 2012; 65:4-11. [PMID: 22177422 DOI: 10.1016/j.jdermsci.2011.11.007] [Citation(s) in RCA: 67] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2011] [Revised: 11/10/2011] [Accepted: 11/14/2011] [Indexed: 12/21/2022]
Abstract
Chemokine receptors are G-protein-coupled, seven-transmembrane-spanning surface receptors that play key roles in cell trafficking, cell motility, and survival. These receptors are activated by small molecular weight chemotactic cytokines called chemokines. Chemokine receptors and their corresponding chemokine ligands play roles in the migration and localization of normal T cells (and other cells) during physiological responses in inflamed or infected skin. In psoriasis, the chemokine receptor CCR6 is expressed on the Th17 cells and γδ T cells, which produce a variety of cytokines (IL17 and IL22 among others), that play a role in the immunological activation. CCR6 and its ligand, CCL20, are highly expressed in psoriatic skin lesion and CCR6 is essential for the development of the psoriasiform phenotype following IL23 injection in mouse skin. In this review, we focus on the roles of chemokine receptors, particularly of CCR6, in the pathogenesis of psoriasis and discuss chemokine receptors as novel therapeutic targets for psoriasis.
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Affiliation(s)
- Tomotaka Mabuchi
- Department of Dermatology, Medical College of Wisconsin, WI, USA.
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49
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Yu H, Lu C, Tan MT, Moudgil KD. The gene expression profile of preclinical autoimmune arthritis and its modulation by a tolerogenic disease-protective antigenic challenge. Arthritis Res Ther 2011; 13:R143. [PMID: 21914168 PMCID: PMC3308071 DOI: 10.1186/ar3457] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2011] [Revised: 06/29/2011] [Accepted: 09/13/2011] [Indexed: 02/06/2023] Open
Abstract
Introduction Autoimmune inflammation is a characteristic feature of rheumatoid arthritis (RA) and other autoimmune diseases. In the natural course of human autoimmune diseases, it is rather difficult to pinpoint the precise timing of the initial event that triggers the cascade of pathogenic events that later culminate into clinically overt disease. Therefore, it is a challenge to examine the early preclinical events in these disorders. Animal models are an invaluable resource in this regard. Furthermore, considering the complex nature of the pathogenic immune events in arthritis, microarray analysis offers a versatile tool to define the dynamic patterns of gene expression during the disease course. Methods In this study, we defined the profiles of gene expression at different phases of adjuvant arthritis (AA) in Lewis rats and compared them with those of antigen mycobacterial heat shock protein 65 (Bhsp65)-tolerized syngeneic rats. Purified total RNA (100 ng) extracted from the draining lymph node cells was used to generate biotin-labeled fragment cRNA, which was then hybridized with an oligonucleotide-based DNA microarray chip. Significance analysis of microarrays was used to compare gene expression levels between the two different groups by limiting the false discovery rate to < 5%. Some of the data were further analyzed using a fold change ≥2.0 as the cutoff. The gene expression of select genes was validated by quantitative real-time PCR. Results Intriguingly, the most dramatic changes in gene expression in the draining lymphoid tissue ex vivo were observed at the preclinical (incubation) phase of the disease. The affected genes represented many of the known proteins that participate in the cellular immune response. Interestingly, the preclinical gene expression profile was significantly altered by a disease-modulating, antigen-based tolerogenic regimen. The changes mostly included upregulation of several genes, suggesting that immune tolerance suppressed disease by activating disease-regulating pathways. We identified a molecular signature comprising at least 12 arthritis-related genes altered by Bhsp65-induced tolerance. Conclusions This is the first report of microarray analysis in the rat AA model. The results of this study not only advance our understanding of the early phase events in autoimmune arthritis but also help in identifying potential targets for the immunomodulation of RA.
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Affiliation(s)
- Hua Yu
- Department of Microbiology and Immunology, University of Maryland School of Medicine, 685 West Baltimore Street, HSF-1, Suite 380, Baltimore, MD 21201, USA
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50
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Abstract
Irrespective of the immune status, the vast majority of all lymphocytes reside in peripheral tissues whereas those present in blood only amount to a small fraction of the total. It has been estimated that T cells in healthy human skin outnumber those present in blood by at least a factor of two. How lymphocytes within these two compartments relate to each other is not well understood. However, mounting evidence suggest that the study of T cell subsets present in peripheral blood does not reflect the function of their counterparts at peripheral sites. This is especially true under steady-state conditions whereby long-lived memory T cells in healthy tissues, notably those in epithelial tissues at body surfaces, are thought to fulfill a critical immune surveillance function by contributing to the first line of defense against a series of local threats, including microbes, tumors, and toxins, and by participating in wound healing. The relative scarcity of information regarding peripheral T cells and the factors regulating their localization is primarily due to inherent difficulties in obtaining healthy tissue for the extraction and study of immune cells on a routine basis. This is most certainly true for humans. Here, we review our current understanding of T cell homing to human skin and compare it when possible with gut-selective homing. We also discuss candidate chemokines that may account for the tissue selectivity in this process and present a model whereby CCR8, and its ligand CCL1, selectively regulate the homeostatic migration of memory lymphocytes to skin tissue.
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Affiliation(s)
- Michelle L McCully
- Department of Infection, Immunity and Biochemistry, School of Medicine, Cardiff University Cardiff, UK
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