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Expression pattern of WNT5A among Egyptian patients with psoriasis treated with platelet-rich plasma versus conventional therapy: Toward a better understanding of the disease. GENE REPORTS 2021. [DOI: 10.1016/j.genrep.2021.101114] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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2
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Wu M, Li X, Zhang C, Zhang C, Qian D, Ma J, Cai M, Tang L, Cheng H, Shen C, Chen G, Zheng X, Zhang X, Zhou F. DNA methylation profile of psoriatic skins from different body locations. Epigenomics 2019; 11:1613-1625. [PMID: 31701765 DOI: 10.2217/epi-2018-0225] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Aim: To understand whether the anatomical location of origin plays a role in shaping the DNA methylation (DNAm) landscape of psoriatic skins. Patients & methods: A number of 108 psoriatic and 57 control skin samples were grouped based on their anatomical locations. Two group t-tests were used to identify those differentially methylated sites and regions. Target region methylation loci were validated by bisulfate conversion sequencing. The correlations of DNAm with pathological features, DNAm and gene expression were also interrogated. Results: Our analysis revealed 315 location-specific differentially methylated sites for back, 291 for the extremities and 801 for abdomen. Moreover, we observed that the extremity-specific loci cg21942490 located on HOXA9 is associated with hyperkeratosis. We further observed that HOXA5 and KIAA1949 are differential methylation regions. Conclusion: Our study shown evidence of anatomical location-dependent DNAm pattern in psoriasis skins, and thus provided new insights into the pathogenesis of this disease.
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Affiliation(s)
- Mingshun Wu
- Department of Dermatology, Institute of Dermatology, the First Affiliated Hospital, Anhui Medical University, Hefei 230032, PR China.,The Key Laboratory of Dermatology (Anhui Medical University), Ministry of Education, Hefei 230032, PR China
| | - Xueying Li
- Department of Dermatology, Institute of Dermatology, the First Affiliated Hospital, Anhui Medical University, Hefei 230032, PR China.,The Key Laboratory of Dermatology (Anhui Medical University), Ministry of Education, Hefei 230032, PR China
| | - Chaowen Zhang
- Department of Dermatology, Institute of Dermatology, the First Affiliated Hospital, Anhui Medical University, Hefei 230032, PR China.,The Key Laboratory of Dermatology (Anhui Medical University), Ministry of Education, Hefei 230032, PR China
| | - Chuanliang Zhang
- Department of Dermatology, Institute of Dermatology, the First Affiliated Hospital, Anhui Medical University, Hefei 230032, PR China.,The Key Laboratory of Dermatology (Anhui Medical University), Ministry of Education, Hefei 230032, PR China
| | - Danfeng Qian
- Department of Dermatology, Institute of Dermatology, the First Affiliated Hospital, Anhui Medical University, Hefei 230032, PR China.,The Key Laboratory of Dermatology (Anhui Medical University), Ministry of Education, Hefei 230032, PR China
| | - Jie Ma
- Department of Dermatology, Institute of Dermatology, the First Affiliated Hospital, Anhui Medical University, Hefei 230032, PR China.,The Key Laboratory of Dermatology (Anhui Medical University), Ministry of Education, Hefei 230032, PR China
| | - Minglong Cai
- Department of Dermatology, Institute of Dermatology, the First Affiliated Hospital, Anhui Medical University, Hefei 230032, PR China.,The Key Laboratory of Dermatology (Anhui Medical University), Ministry of Education, Hefei 230032, PR China
| | - Lili Tang
- Department of Dermatology, Institute of Dermatology, the First Affiliated Hospital, Anhui Medical University, Hefei 230032, PR China.,The Key Laboratory of Dermatology (Anhui Medical University), Ministry of Education, Hefei 230032, PR China
| | - Hui Cheng
- Department of Dermatology, Institute of Dermatology, the First Affiliated Hospital, Anhui Medical University, Hefei 230032, PR China.,The Key Laboratory of Dermatology (Anhui Medical University), Ministry of Education, Hefei 230032, PR China
| | - Changbing Shen
- Department of Dermatology, China-Japan Friendship Hospital, Beijing 100029, PR China
| | - Gang Chen
- Department of Dermatology, Institute of Dermatology, the First Affiliated Hospital, Anhui Medical University, Hefei 230032, PR China.,The Key Laboratory of Dermatology (Anhui Medical University), Ministry of Education, Hefei 230032, PR China
| | - Xiaodong Zheng
- Department of Dermatology, Institute of Dermatology, the First Affiliated Hospital, Anhui Medical University, Hefei 230032, PR China.,The Key Laboratory of Dermatology (Anhui Medical University), Ministry of Education, Hefei 230032, PR China
| | - Xuejun Zhang
- Department of Dermatology, Institute of Dermatology, the First Affiliated Hospital, Anhui Medical University, Hefei 230032, PR China.,Department of Dermatology, Institute of Dermatology, Huashan Hospital, Fudan University, Shanghai 200040, PR China
| | - Fusheng Zhou
- Department of Dermatology, Institute of Dermatology, the First Affiliated Hospital, Anhui Medical University, Hefei 230032, PR China.,The Key Laboratory of Dermatology (Anhui Medical University), Ministry of Education, Hefei 230032, PR China
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3
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Méhul B, Laffet G, Séraïdaris A, Russo L, Fogel P, Carlavan I, Pernin C, Andres P, Queille-Roussel C, Voegel J. Noninvasive proteome analysis of psoriatic stratum corneum reflects pathophysiological pathways and is useful for drug profiling. Br J Dermatol 2017; 177:470-488. [DOI: 10.1111/bjd.15346] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/16/2016] [Indexed: 12/22/2022]
Affiliation(s)
- B. Méhul
- Galderma R&D; 2400 route des colles 06410 Biot France
| | - G. Laffet
- Galderma R&D; 2400 route des colles 06410 Biot France
| | - A. Séraïdaris
- Galderma R&D; 2400 route des colles 06410 Biot France
| | - L. Russo
- Galderma R&D; 2400 route des colles 06410 Biot France
| | - P. Fogel
- 132 rue d'Assas 75006 Paris France
| | - I. Carlavan
- Galderma R&D; 2400 route des colles 06410 Biot France
| | - C. Pernin
- Galderma R&D; 2400 route des colles 06410 Biot France
| | - P. Andres
- Galderma R&D; 2400 route des colles 06410 Biot France
| | - C. Queille-Roussel
- Centre de Pharmacologie Clinique Appliquée à la Dermatologie (CPCAD); University Hospital of Nice; 5 rue Pierre Devoluy 06000 Nice France
| | - J.J. Voegel
- Galderma R&D; 2400 route des colles 06410 Biot France
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4
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Rodríguez-Cerdeira C, Molares-Vila A, Sánchez-Blanco E, Sánchez-Blanco B. Study on Certain Biomarkers of Inflammation in Psoriasis Through "OMICS" Platforms. Open Biochem J 2014; 8:21-34. [PMID: 24688608 PMCID: PMC3970352 DOI: 10.2174/1874091x01408010021] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2013] [Revised: 12/11/2013] [Accepted: 12/14/2013] [Indexed: 12/14/2022] Open
Abstract
Background: In recent years, research on psoriasis has focused on the identification of biomarkers for the diagnosis, pathogenesis, prognosis, or therapeutic response of the disease. These studies could provide insights into the susceptibility and natural history of psoriasis. The identification of biomarkers related to comorbidities in psoriasis, such as arthritis, cardiovascular disease, and the metabolic syndrome, is of special clinical interest. Materials and Methods: We performed an extensive review on psoriasis biomarkers, including cytokine and growth factors, in the literature published between 1997 and 2013, including cross-references of any retrieved articles. We also included some data from our own studies. Results: This review presents current knowledge of soluble biomarkers in psoriasis, including cytokines, chemokines, proangiogenic mediators, growth factors, antimicrobial proteins, neuropeptides, and oxidative stress markers. Conclusion: In conclusion, a number of studies have been conducted with the aim of establishing soluble biomarkers for psoriasis. Most of the biomarkers that have been studied do not meet the criteria for a clinically useful biomarker. Further work is needed to establish a role for soluble biomarkers in the diagnosis and treatment of psoriasis, with a special focus on biomarkers for psoriasis comorbidities, such as arthritis, cardiovascular disease, and the metabolic syndrome.
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Affiliation(s)
| | - A Molares-Vila
- Department of Analytical Chemistry, University of Vigo, Spain
| | | | - B Sánchez-Blanco
- Postgraduate researcher, Department of Emergency, CHUVI, Vigo, Spain
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5
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Mavropoulos A, Rigopoulou EI, Liaskos C, Bogdanos DP, Sakkas LI. The role of p38 MAPK in the aetiopathogenesis of psoriasis and psoriatic arthritis. Clin Dev Immunol 2013; 2013:569751. [PMID: 24151518 PMCID: PMC3787653 DOI: 10.1155/2013/569751] [Citation(s) in RCA: 68] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2013] [Accepted: 08/14/2013] [Indexed: 02/08/2023]
Abstract
The pathogenetic mechanisms responsible for the induction of immune-mediated disorders, such as psoriasis, remain not well characterized. Molecular signaling pathways are not well described in psoriasis, as well as psoriatic arthritis, which is seen in up to 40% of patients with psoriasis. Signaling pathway defects have long been hypothesized to participate in the pathology of psoriasis, yet their implication in the altered psoriatic gene expression still remains unclear. Emerging data suggest a potential pathogenic role for mitogen activated protein kinases p38 (p38 MAPK) extracellular signal-regulated kinase 1/2 (ERK1/2), and c-Jun N-terminal kinase (JNK) in the development of psoriasis. The data are still limited, though, for psoriatic arthritis. This review discusses the current data suggesting a crucial role for p38 MAPK in the pathogenesis of these disorders.
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Affiliation(s)
- Athanasios Mavropoulos
- Cellular Immunotherapy and Molecular Immunodiagnostics, Institute of Research and Technology Thessaly, 41222 Larissa, Greece
- Division of Transplantation Immunology and Mucosal Biology, Institute of Liver Studies, King's College London School of Medicine at King's College Hospital, Denmark Hill Campus, London SE5 9RS, UK
| | - Eirini I. Rigopoulou
- Department of Medicine, Faculty of Medicine, School of Health Sciences, University of Thessaly, Biopolis, 41110 Larissa, Greece
| | - Christos Liaskos
- Cellular Immunotherapy and Molecular Immunodiagnostics, Institute of Research and Technology Thessaly, 41222 Larissa, Greece
| | - Dimitrios P. Bogdanos
- Cellular Immunotherapy and Molecular Immunodiagnostics, Institute of Research and Technology Thessaly, 41222 Larissa, Greece
- Division of Transplantation Immunology and Mucosal Biology, Institute of Liver Studies, King's College London School of Medicine at King's College Hospital, Denmark Hill Campus, London SE5 9RS, UK
- Department of Medicine, Faculty of Medicine, School of Health Sciences, University of Thessaly, Biopolis, 41110 Larissa, Greece
| | - Lazaros I. Sakkas
- Department of Medicine, Faculty of Medicine, School of Health Sciences, University of Thessaly, Biopolis, 41110 Larissa, Greece
- Center of Molecular Medicine, Old Dominion University, 23529 Monarch Way, Norfolk, VA, USA
- Department of Rheumatology, Faculty of Medicine School of Health Sciences, University of Thessaly, Biopolis, 41110 Larissa, Greece
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Abstract
Molecular diagnostic strategies are gaining wider acceptance and use in dermatology and dermatopathology as more practitioners in this field develop an understanding of the principles and applications of genomic technologies. Molecular testing is facilitating more accurate diagnosis, staging, and prognostication, in addition to guiding the selection of appropriate treatment, monitoring of therapy, and identification of novel therapeutic targets, for a wide variety of skin diseases.
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Affiliation(s)
- Zendee Elaba
- Department of Pathology, Hartford Hospital, Hartford, CT, USA
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7
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Coda AB, Icen M, Smith JR, Sinha AA. Global transcriptional analysis of psoriatic skin and blood confirms known disease-associated pathways and highlights novel genomic "hot spots" for differentially expressed genes. Genomics 2012; 100:18-26. [PMID: 22584065 DOI: 10.1016/j.ygeno.2012.05.004] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2012] [Accepted: 05/06/2012] [Indexed: 11/18/2022]
Abstract
There are major gaps in our knowledge regarding the exact mechanisms and genetic basis of psoriasis. To investigate the pathogenesis of psoriasis, gene expression in 10 skin (5 lesional, 5 nonlesional) and 11 blood (6 psoriatic, 5 nonpsoriatic) samples were examined using Affymetrix HG-U95A microarrays. We detected 535 (425 upregulated, 110 downregulated) DEGs in lesional skin at 1% false discovery rate (FDR). Combining nine microarray studies comparing lesional and nonlesional psoriatic skin, 34.5% of dysregulated genes were overlapped in multiple studies. We further identified 20 skin and 2 blood associated transcriptional "hot spots" at specified genomic locations. At 5% FDR, 11.8% skin and 10.4% blood DEGs in our study mapped to one of the 12 PSORS loci. DEGs that overlap with PSORS loci may offer prioritized targets for downstream genetic fine mapping studies. Novel DEG "hot spots" may provide new targets for defining susceptibility loci in future studies.
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Affiliation(s)
- Alvin B Coda
- Division of Dermatology and Cutaneous Sciences, Center for Investigative Dermatology, Michigan State University, East Lansing, MI, USA.
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8
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Sex differences and genomics in autoimmune diseases. J Autoimmun 2012; 38:J254-65. [DOI: 10.1016/j.jaut.2011.12.001] [Citation(s) in RCA: 83] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2011] [Accepted: 12/02/2011] [Indexed: 12/23/2022]
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9
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Roberson EDO, Liu Y, Ryan C, Joyce CE, Duan S, Cao L, Martin A, Liao W, Menter A, Bowcock AM. A subset of methylated CpG sites differentiate psoriatic from normal skin. J Invest Dermatol 2011; 132:583-92. [PMID: 22071477 PMCID: PMC3568942 DOI: 10.1038/jid.2011.348] [Citation(s) in RCA: 122] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Psoriasis is a chronic inflammatory immune-mediated disorder affecting the skin and other organs including joints. Over 1,300 transcripts are altered in psoriatic involved skin compared to normal skin. However to our knowledge global epigenetic profiling of psoriatic skin is previously unreported. Here we describe a genome-wide study of altered CpG methylation in psoriatic skin. We determined the methylation levels at 27,578 CpG sites in skin samples from individuals with psoriasis (12 involved, 8 uninvolved) and 10 unaffected individuals. CpG methylation of involved skin differed from normal skin at 1,108 sites. Twelve mapped to the epidermal differentiation complex, upstream or within genes that are highly up-regulated in psoriasis. Hierarchical clustering of 50 of the top differentially methylated (DM) sites separated psoriatic from normal skin samples. CpG sites where methylation was correlated with gene expression are reported. Sites with inverse correlations between methylation and nearby gene expression include those of KYNU, OAS2, S100A12, and SERPINB3, whose strong transcriptional up-regulation are important discriminators of psoriasis. We observed intrinsic epigenetic differences in uninvolved skin. Pyrosequencing of bisulfite-treated DNA from skin biopsies at three DM loci confirmed earlier findings and revealed reversion of methylation levels towards the non-psoriatic state after one month of anti-TNF-α therapy.
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Affiliation(s)
- Elisha D O Roberson
- Department of Genetics, Washington University School of Medicine, St Louis, Missouri 63110, USA
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10
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Rasmy H, Mikhael N, Ismail S. Interleukin-18 expression and the response to treatment in patients with psoriasis. Arch Med Sci 2011; 7:713-9. [PMID: 22291810 PMCID: PMC3258774 DOI: 10.5114/aoms.2011.24144] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/18/2009] [Revised: 11/15/2009] [Accepted: 02/22/2010] [Indexed: 12/26/2022] Open
Abstract
INTRODUCTION The aim of the study was to demonstrate interleukin-18 (IL-18) expression in keratinocytes from psoriatic lesions in comparison to keratinocytes from uninvolved skin and to study the change of expression after therapeutic interventions. MATERIAL AND METHODS This study included 16 patients of different clinical subtypes of psoriasis. Interleukin-18 gene expression analysis was performed using real time quantitative PCR. Three biopsies were obtained from each patient. Two were taken from the lesional psoriatic skin and from uninvolved skin before starting treatment. A third lesional skin biopsy was taken at the end of 2 months of treatment. The treatment was in the form of topical steroids or oral systemic methotrexate. RESULTS Of all 16 studied patients, significantly increased IL-18 expression was noted in keratinocytes from psoriatic lesions before and after treatment when compared to keratinocytes from uninvolved skin (p = 0.001 and p = 0.002 respectively). The IL-18 expression in the skin lesions after treatment was significantly lower than lesional skin before treatment (p = 0.023). In psoriatic skin lesions of all studied patients IL-18 expression was significantly correlated with disease duration (r = 0.40 and p = 0.01) and clinical severity of psoriasis (r = 0.72 and p = 0.001). CONCLUSIONS Increased IL-18 expression in keratinocytes from psoriatic lesions of our patients and its correlation with disease duration and severity supported the concept of psoriasis as a T cell mediated autoimmune disease. This could establish therapeutic and preventive approaches for psoriasis that ultimately lead to improved outcomes for patients.
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11
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Stenderup K, Rosada C, Alifrangis L, Andersen S, Dam TN. Statistical evaluation and experimental design of a psoriasis xenograft transplantation model treated with cyclosporin A. Exp Dermatol 2011; 20:441-4. [DOI: 10.1111/j.1600-0625.2011.01251.x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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12
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Rácz E, Prens EP, Kurek D, Kant M, de Ridder D, Mourits S, Baerveldt EM, Ozgur Z, van IJcken WFJ, Laman JD, Staal FJ, van der Fits L. Effective treatment of psoriasis with narrow-band UVB phototherapy is linked to suppression of the IFN and Th17 pathways. J Invest Dermatol 2011; 131:1547-58. [PMID: 21412260 DOI: 10.1038/jid.2011.53] [Citation(s) in RCA: 119] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Narrow-band ultraviolet-B (NB-UVB) phototherapy is an effective treatment for psoriasis. The molecular mechanisms underlying its efficacy are incompletely understood. To identify NB-UVB-induced molecular pathways that may account for its anti-inflammatory efficacy, gene expression profiling was performed using epidermal RNA from lesional and nonlesional skin from patients with psoriasis undergoing NB-UVB therapy. Downregulation of Th17 signaling pathway was observed during NB-UVB therapy in psoriatic epidermis. Strong inhibition of the Th17 pathway by UVB was confirmed in an ex vivo organ culture system by demonstrating reduced signal transducer and activator of transcription 3 (STAT3) phosphorylation and β-defensin-2 production. These results were further substantiated by demonstrating that NB-UVB inhibited the Th17-dependent psoriasis-like dermatitis in mice. Other pathways affected by NB-UVB therapy include the IFN signaling pathway, epidermal differentiation, and other well-known therapeutic targets in psoriasis, such as the glucocorticoid, vitamin D, peroxisome proliferator-activated receptor, and IL-4 signaling pathways. In conclusion, clinical improvement of psoriasis by NB-UVB is linked to suppression of Th17 and type I and type II IFN signaling pathways, which are critical in the pathogenesis of the disease. Our results show that clinically effective NB-UVB therapy is based on suppression of a broad range of important molecular pathways in psoriatic skin.
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Affiliation(s)
- Emoke Rácz
- Department of Dermatology, Erasmus MC, University Medical Center, Rotterdam, The Netherlands.
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13
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Aubert J, Reiniche P, Fogel P, Poulin Y, Lui H, Lynde C, Shapiro J, Villemagne H, Soto P, Voegel JJ. Gene expression profiling in psoriatic scalp hair follicles: clobetasol propionate shampoo 0.05% normalizes psoriasis disease markers. J Eur Acad Dermatol Venereol 2011; 24:1304-11. [PMID: 20337827 DOI: 10.1111/j.1468-3083.2010.03637.x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
BACKGROUND Clobetasol propionate shampoo is effective and safe in treatment of scalp psoriasis (SP). Gene expression profiling of psoriatic skin biopsies led to the identification of numerous disease-related genes. However, it remained unknown whether the gene expression profile of hair follicles of SP patients was also affected. OBJECTIVES To determine whether psoriasis-related genes are differentially regulated in the hair follicles of SP patients and whether the modulation of these genes can be correlated with clinical severity scores. METHODS A single arm, open study was conducted in three centres. SP patients received daily treatment with clobetasol propionate shampoo. At Baseline, Weeks 2 and 4, investigators assessed clinical severity parameters and collected scalp hair follicles in anagen phase. Total RNA extracted from hair follicles was used to determine the expression level of 44 genes, which were reported previously to be upregulated in the skin of psoriasis patients. RESULTS RNA of good quality and sufficient quantity was obtained from hair follicles of psoriasis patients and healthy volunteers (HV). The expression level of 10 inflammation-related genes was significantly increased in psoriatic hair follicles. The patient's exploratory transcriptomic score, defined as the mean fold modulation of these 10 genes compared with HV, correlated with clinical severity scores. Clobetasol propionate shampoo was effective in decreasing both the exploratory transcriptomics and the clinical severity scores. CONCLUSION Hair follicles of SP patients are affected by the inflammatory process. The change in the expression level of inflammation-related genes correlates with the severity of the disease.
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Affiliation(s)
- J Aubert
- Galderma R&D, Sophia Antipolis, France.
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14
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Genetics of Psoriasis - Short Resume. ACTA MEDICA MARTINIANA 2011. [DOI: 10.2478/v10201-011-0001-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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15
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Mohamed Attia HR, Mikhael N, Ismail S. Interleukin-18 expression and the response to treatment in patients with psoriasis. Arch Med Sci 2010; 6:964-70. [PMID: 22427774 PMCID: PMC3302712 DOI: 10.5114/aoms.2010.19309] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/18/2009] [Revised: 11/15/2009] [Accepted: 02/22/2010] [Indexed: 01/06/2023] Open
Abstract
INTRODUCTION The aim of the study was to demonstrate Interleukin-18 (IL-18) expression in keratinocytes from psoriatic lesions in comparison to keratinocytes from uninvolved skin and to study the change of expression after therapeutic interventions. MATERIAL AND METHODS This study included 16 patients of different clinical subtypes of psoriasis. IL-18 gene expression analysis was performed using real-time quantitative PCR. Three biopsies were obtained from each patient. Two were taken from the lesional psoriatic skin and from uninvolved skin before starting treatment. A third lesional skin biopsy was taken at the end of two months' treatment course. The treatment was in the form of topical steroids or oral systemic methotrexate. RESULTS Of all 16 studied patients significantly increased IL-18 expression was noted in keratinocytes from psoriatic lesions before and after treatment when compared to keratinocytes from uninvolved skin (P = 0.001 and 0.002 respectively). The IL-18 expression in the skin lesions after treatment was significantly lower than lesional skin before treatment (P = 0.023). In psoriatic skin lesions of all studied patients IL-18 expression was significantly correlated with disease duration (r = 0.40 and P = 0.01) and clinical severity of psoriasis (r = 0.72 and P = 0.001). CONCLUSIONS Increased IL-18 expression in keratinocytes from psoriatic lesions of our patients and its correlation with disease duration and severity supported the concept which views psoriasis as a T-cell-mediated autoimmune disease. This could establish therapeutic and preventive approaches for psoriasis that ultimately lead to improved outcomes for patients.
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Affiliation(s)
| | - Nancy Mikhael
- Dermatology and Andrology Department, Benha Faculty of Medicine, Benha, Egypt
| | - Somaia Ismail
- Molecular Genetics Department, National Research Center, Cairo, Egypt
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16
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Cheriyath V, Leaman DW, Borden EC. Emerging roles of FAM14 family members (G1P3/ISG 6-16 and ISG12/IFI27) in innate immunity and cancer. J Interferon Cytokine Res 2010; 31:173-81. [PMID: 20939681 DOI: 10.1089/jir.2010.0105] [Citation(s) in RCA: 90] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
Interferons (IFNs) manifest their cellular functions by regulating expression of target genes known collectively as IFN-stimulated genes (ISGs). The repertoires of ISGs vary slightly between cell types, but routinely include a core of common ISGs robustly upregulated in most IFN-treated cells. Here, we review the regulation and cellular functions of 2 related ISGs, ISG12 (IFI27) and G1P3 (ISG 6-16), that are commonly induced by IFNs in most, if not all, IFN-responsive cells. On the basis of sequence similarity, they are grouped together within the newly defined FAM14 family. Emerging data on ISG12 and G1P3 suggest that both are mitochondrial proteins with opposing activities on apoptosis that may influence the innate immune responses of IFNs. The G1P3 gene encodes a low molecular weight mitochondrial protein that may stabilize mitochondrial function and oppose apoptosis. In contrast, ISG12 expression may sensitize cells to apoptotic stimuli via mitochondrial membrane destabilization. On the basis of these results and differences in induction kinetics between ISG12 and G1P3, we have proposed a model for the role of these genes in mediating cellular activity of IFNs.
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Affiliation(s)
- Venugopalan Cheriyath
- Department of Translational Hematology and Oncology Research, Taussig Cancer Institute, Cleveland Clinic, Cleveland, Ohio 44195, USA.
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17
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Braconi D, Bernardini G, Santucci A. Post-genomics and skin inflammation. Mediators Inflamm 2010; 2010:364823. [PMID: 20886018 PMCID: PMC2945662 DOI: 10.1155/2010/364823] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2010] [Accepted: 08/22/2010] [Indexed: 01/26/2023] Open
Abstract
Atopic dermatitis and psoriasis are two chronic skin inflammatory diseases that have so far received a greater attention within the scientific community through different post-genomic approaches; on the contrary, acne, which is undoubtedly one of the most common skin disorders involving inflammatory processes, seems to be still quite neglected under the post-genomic point of view. In this paper, we will review how post-genomic technologies have provided new fundamental tools for the analysis of these three conditions and we will cast light on their potential in addressing future research challenges.
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Affiliation(s)
- Daniela Braconi
- Dipartimento di Biologia Molecolare, Università degli Studi di Siena, via Fiorentina 1, 53100 Siena, Italy
| | - Giulia Bernardini
- Dipartimento di Biologia Molecolare, Università degli Studi di Siena, via Fiorentina 1, 53100 Siena, Italy
| | - Annalisa Santucci
- Dipartimento di Biologia Molecolare, Università degli Studi di Siena, via Fiorentina 1, 53100 Siena, Italy
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18
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Piruzian E, Bruskin S, Ishkin A, Abdeev R, Moshkovskii S, Melnik S, Nikolsky Y, Nikolskaya T. Integrated network analysis of transcriptomic and proteomic data in psoriasis. BMC SYSTEMS BIOLOGY 2010; 4:41. [PMID: 20377895 PMCID: PMC2873316 DOI: 10.1186/1752-0509-4-41] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/30/2009] [Accepted: 04/08/2010] [Indexed: 11/10/2022]
Abstract
BACKGROUND Psoriasis is complex inflammatory skin pathology of autoimmune origin. Several cell types are perturbed in this pathology, and underlying signaling events are complex and still poorly understood. RESULTS In order to gain insight into molecular machinery underlying the disease, we conducted a comprehensive meta-analysis of proteomics and transcriptomics of psoriatic lesions from independent studies. Network-based analysis revealed similarities in regulation at both proteomics and transcriptomics level. We identified a group of transcription factors responsible for overexpression of psoriasis genes and a number of previously unknown signaling pathways that may play a role in this process. We also evaluated functional synergy between transcriptomics and proteomics results. CONCLUSIONS We developed network-based methodology for integrative analysis of high throughput data sets of different types. Investigation of proteomics and transcriptomics data sets on psoriasis revealed versatility in regulatory machinery underlying pathology and showed complementarities between two levels of cellular organization.
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Affiliation(s)
- Eleonora Piruzian
- Vavilov Institute of General Genetics, Russian Academy of Sciences, Gubkina St, 3 GSP-1, 119991 Moscow, Russia
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Rácz E, Prens EP. Molecular pathophysiology of psoriasis and molecular targets of antipsoriatic therapy. Expert Rev Mol Med 2009; 11:e38. [PMID: 20003607 DOI: 10.1017/s146239940900129x] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Psoriasis is a chronic inflammatory skin disease characterised by elevated red scaly plaques on specific body sites. Histologically, the plaques are defined by epidermal hyperplasia, epidermal and dermal infiltration by leukocytes, and changes in the dermal microvasculature. Differentiation and activation are disturbed in lesional psoriatic keratinocytes, and the pool of proliferating keratinocytes is increased, which is accompanied by enhanced production of proinflammatory cytokines, adhesion molecules and antimicrobial peptides. These changes in psoriatic keratinocytes are caused by altered expression of genes associated with epidermal differentiation, and by activation of signalling pathways involving signal transducer and activator of transcription 3 (STAT3), type I interferon (IFN) and mitogen-activated protein kinase (MAPK). The number of T cells, and myeloid and plasmacytoid dendritic cells (DCs) is markedly increased in psoriatic lesions. Myeloid DCs produce interleukin (IL)-23, tumour necrosis factor (TNF)-alpha and inducible nitric oxide synthase (iNOS), which are crucial cytokines in the pathogenesis of psoriasis. IL-23 stimulates the secretion of IL-22 by T helper 17 cells, and IL-22 induces epidermal hyperplasia. The crosstalk between keratinocytes and leukocytes via their proinflammatory cytokines creates the vicious circle of chronic skin inflammation seen in psoriasis. This suggests that optimal treatment of psoriasis needs to target pathogenic pathways in both leukocytes and keratinocytes.
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Affiliation(s)
- Emoke Rácz
- Department of Dermatology and Department of Immunology, Erasmus MC, University Medical Center, Rotterdam, The Netherlands.
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Cytokines and cytokine profiles in human autoimmune diseases and animal models of autoimmunity. Mediators Inflamm 2009; 2009:979258. [PMID: 19884985 PMCID: PMC2768824 DOI: 10.1155/2009/979258] [Citation(s) in RCA: 115] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2009] [Revised: 07/13/2009] [Accepted: 08/10/2009] [Indexed: 02/08/2023] Open
Abstract
The precise pathomechanisms of human autoimmune diseases are still poorly understood. However, a deepened understanding of these is urgently needed to improve disease prevention and early detection and guide more specific treatment approaches. In recent years, many new genes and signalling pathways involved in autoimmunity with often overlapping patterns between different disease entities have been detected. Major contributions were made by experiments using DNA microarray technology, which has been used for the analysis of gene expression patterns in chronic inflammatory and autoimmune diseases, among which were rheumatoid arthritis, systemic lupus erythematosus, psoriasis, systemic sclerosis, multiple sclerosis, and type-1 diabetes. In systemic lupus erythematosus, a so-called interferon signature has been identified. In psoriasis, researchers found a particular immune signalling cluster. Moreover the identification of a new subset of inflammatory T cells, so-called Th17 T cells, secreting interleukin (IL)-17 as one of their major cytokines and the identification of the IL-23/IL-17 axis of inflammation regulation, have significantly improved our understanding of autoimmune diseases. Since a plethora of new treatment approaches using antibodies or small molecule inhibitors specifically targeting cytokines, cellular receptors, or signalling mechanisms has emerged in recent years, more individualized treatment for affected patients may be within reach in the future.
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Batliwalla FM, Li W, Ritchlin CT, Xiao X, Brenner M, Laragione T, Shao T, Durham R, Kemshetti S, Schwarz E, Coe R, Kern M, Baechler EC, Behrens TW, Gregersen PK, Gulko PS. Microarray analyses of peripheral blood cells identifies unique gene expression signature in psoriatic arthritis. Mol Med 2009; 11:21-9. [PMID: 16622521 PMCID: PMC1449519 DOI: 10.2119/2006-00003.gulko] [Citation(s) in RCA: 102] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2006] [Accepted: 03/13/2006] [Indexed: 01/01/2023] Open
Abstract
Psoriatic arthritis (PsA) is a chronic and erosive form of arthritis of unknown cause. We aimed to characterize the PsA phenotype using gene expression profiling and comparing it with healthy control subjects and patients rheumatoid arthritis (RA). Peripheral blood cells (PBCs) of 19 patients with active PsA and 19 age- and sex-matched control subjects were used in the analyses of PsA, with blood samples collected in PaxGene tubes. A significant alteration in the pattern of expression of 313 genes was noted in the PBCs of PsA patients on Affymetrix U133A arrays: 257 genes were expressed at reduced levels in PsA, and 56 genes were expressed at increased levels, compared with controls. Downregulated genes tended to cluster to certain chromosomal regions, including those containing the psoriasis susceptibility loci PSORS1 and PSORS2. Among the genes with the most significantly reduced expression were those involved in downregulation or suppression of innate and acquired immune responses, such as SIGIRR, STAT3, SHP1, IKBKB, IL-11RA, and TCF7, suggesting inappropriate control that favors proin-flammatory responses. Several members of the MAPK signaling pathway and tumor suppressor genes showed reduced expression. Three proinflammatory genes--S100A8, S100A12, and thioredoxin--showed increased expression. Logistic regression and recursive partitioning analysis determined that one gene, nucleoporin 62 kDa, could correctly classify all controls and 94.7% of the PsA patients. Using a dataset of 48 RA samples for comparison, the combination of two genes, MAP3K3 followed by CACNA1S, was enough to correctly classify all RA and PsA patients. Thus, PBC gene expression profiling identified a gene expression signature that differentiated PsA from RA, and PsA from controls. Several novel genes were differentially expressed in PsA and may prove to be diagnostic biomarkers or serve as new targets for the development of therapies.
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Affiliation(s)
- Franak M. Batliwalla
- Robert S. Boas Center for Genomics and Human Genetics, Feinstein Institute for Medical Research
- Department of Medicine, New York University School of Medicine, New York, NY, USA
| | - Wentian Li
- Robert S. Boas Center for Genomics and Human Genetics, Feinstein Institute for Medical Research
| | - Christopher T. Ritchlin
- Division of Rheumatology, Department of Medicine, University of Rochester, Rochester, NY, USA
| | - Xiangli Xiao
- Robert S. Boas Center for Genomics and Human Genetics, Feinstein Institute for Medical Research
| | - Max Brenner
- Robert S. Boas Center for Genomics and Human Genetics, Feinstein Institute for Medical Research
- North Shore-LIJ Graduate School of Molecular Medicine, Manhasset, NY, USA
| | - Teresina Laragione
- Robert S. Boas Center for Genomics and Human Genetics, Feinstein Institute for Medical Research
| | - Tianmeng Shao
- Division of Rheumatology, Department of Medicine, University of Rochester, Rochester, NY, USA
| | - Robert Durham
- Division of Rheumatology, Department of Medicine, University of Rochester, Rochester, NY, USA
| | - Sunil Kemshetti
- Division of Rheumatology, Department of Medicine, University of Rochester, Rochester, NY, USA
| | - Edward Schwarz
- Division of Rheumatology, Department of Medicine, University of Rochester, Rochester, NY, USA
| | - Rodney Coe
- Robert S. Boas Center for Genomics and Human Genetics, Feinstein Institute for Medical Research
| | - Marlena Kern
- Robert S. Boas Center for Genomics and Human Genetics, Feinstein Institute for Medical Research
| | - Emily C. Baechler
- Division of Rheumatic and Autoimmune Diseases, Department of Medicine, University of Minnesota, Minneapolis, MN, USA
| | - Timothy W. Behrens
- Division of Rheumatic and Autoimmune Diseases, Department of Medicine, University of Minnesota, Minneapolis, MN, USA
| | - Peter K. Gregersen
- Robert S. Boas Center for Genomics and Human Genetics, Feinstein Institute for Medical Research
- Division of Rheumatology, Department of Medicine, North Shore University Hospital, Manhasset, NY, USA
- Department of Medicine, New York University School of Medicine, New York, NY, USA
| | - Pércio S. Gulko
- Robert S. Boas Center for Genomics and Human Genetics, Feinstein Institute for Medical Research
- Division of Rheumatology, Department of Medicine, North Shore University Hospital, Manhasset, NY, USA
- Department of Medicine, New York University School of Medicine, New York, NY, USA
- Address correspondence and reprint requests to Pércio S. Gulko, Robert S. Boas Center for Genomics and Human Genetics, Feinstein Institute for Medical Research, 350 Community Drive, Room 139, Manhasset, NY 11030. Phone: 516-562-1275; fax: 516-562-1153; e-mail:
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Wenzel J, Peters B, Zahn S, Birth M, Hofmann K, Küsters D, Tomiuk S, Baron JM, Merk HF, Mauch C, Krieg T, Bieber T, Tüting T, Bosio A. Gene Expression Profiling of Lichen Planus Reflects CXCL9+-Mediated Inflammation and Distinguishes this Disease from Atopic Dermatitis and Psoriasis. J Invest Dermatol 2008; 128:67-78. [PMID: 17703176 DOI: 10.1038/sj.jid.5700945] [Citation(s) in RCA: 56] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Here, we present data of a gene expression profiling approach to apply the diagnostic value and pathological significance of this method in different inflammatory skin diseases, using whole skin biopsies. Initially, SAGE was performed to identify frequent tags differentially expressed in various skin diseases. On the basis of these results, a new skin pathology-oriented PIQOR microarray was designed. Lichen planus (LP) was chosen as a model disease to evaluate this system. Controls included healthy skin, atopic dermatitis (AD), and psoriasis (Pso). Gene expression analyses using the topic-defined microarray followed by unclassified clustering was able to discriminate LP from AD and Pso. Genes significantly expressed in LP included type I IFN inducible genes and a specific chemokine expression pattern. The CXCR3 ligand, CXCL9, was the most significant marker for LP. In situ hybridization and immunohistochemistry confirmed the results and revealed that keratinocytes are type I IFN producers in LP skin lesions. Our results show that gene expression profiling using a skin-specific microarray is a reliable method to identify patients with LP in the chosen context and reflect recent models concerning the pathogenesis of this disease. Gene expression profiling might complement the diagnostic spectrum in dermatology and may provide new pathogenetic insights.
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Affiliation(s)
- Joerg Wenzel
- Department of Dermatology, University of Bonn, Bonn, Germany.
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Mee JB, Johnson CM, Morar N, Burslem F, Groves RW. The psoriatic transcriptome closely resembles that induced by interleukin-1 in cultured keratinocytes: dominance of innate immune responses in psoriasis. THE AMERICAN JOURNAL OF PATHOLOGY 2007; 171:32-42. [PMID: 17591951 PMCID: PMC1941577 DOI: 10.2353/ajpath.2007.061067] [Citation(s) in RCA: 82] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Psoriasis has been considered an autoimmune, T cell-mediated disorder in which adaptive immune responses predominate over those of non-antigen-specific innate immunity. To test this hypothesis, we profiled the transcriptome of psoriatic tissue and compared the data with that from cultured human keratinocytes exposed to the proinflammatory cytokine interleukin (IL)-1alpha and the Th1 cytokine interferon-gamma. When compared with patient-matched, nonlesional skin biopsies, psoriatic samples exhibited regulation of 90 transcripts including several members of the epidermal differentiation complex, molecules with antimicrobial activity, and hyperproliferation-associated keratins. Stimulation of keratinocytes with interferon-gamma resulted in regulation of 252 transcripts, with particularly strong expression of the CXCR3-binding ligands CXCL9, -10, and -11 and class II major histocompatibility complex genes, primarily those of the HLA-DR and -DP families. In contrast, the transcriptome resulting from exposure of keratinocytes to IL-1alpha elicited differences in just 19 transcripts, particularly genes within the epidermal differentiation complex and antimicrobial molecules, including PI3 and DEFB4. Major differences between the two keratinocyte transcriptomes were exhibited with only five induced IL-1alpha transcripts also regulated in the interferon-gamma set. Unexpectedly, there was a high correlation between psoriatic lesional tissue and the IL-1alpha transcriptome. These findings suggest that the inflammatory milieu in the epidermal microenvironment in psoriasis is more likely dependent on evolutionarily ancient cytokines such as IL-1, rather than those of the adaptive immune response.
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Affiliation(s)
- John B Mee
- St John's Institute of Dermatology, Guy's Hospital, London, UK.
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Romanowska M, al Yacoub N, Seidel H, Donandt S, Gerken H, Phillip S, Haritonova N, Artuc M, Schweiger S, Sterry W, Foerster J. PPARdelta enhances keratinocyte proliferation in psoriasis and induces heparin-binding EGF-like growth factor. J Invest Dermatol 2007; 128:110-24. [PMID: 17637826 DOI: 10.1038/sj.jid.5700943] [Citation(s) in RCA: 73] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Psoriasis is a common skin disease involving keratinocyte proliferation and altered differentiation, as well as T-cell activation. Here, we show that altered gene transcription in psoriatic skin lesions is highly reproducible between independent data sets. Analysis of gene expression confirmed dysregulation in all expected functional categories, such as IFN signaling and keratinocyte differentiation, and allowed molecular fingerprinting of a previously characterized dendritic cell subset associated with psoriasis tumor necrosis factor alpha (TNF-alpha)- and inducible nitric oxide synthase (iNOS)-producing CD11b(INT) DC (Tip-DC). Unexpectedly, a large group of dysregulated transcripts was related to fatty acid signaling and adipocyte differentiation, exhibiting a pattern consistent with the activation of peroxisome proliferator-activated receptor delta (PPARdelta). PPARdelta itself was strongly induced in psoriasis in vivo. In primary keratinocytes, PPARdelta was induced by the transcription factor activator protein 1, in particular by junB, but not by canonical WNT signaling, in contrast to its regulation in colon carcinoma cells. Activation of PPARdelta enhanced proliferation of keratinocytes, while this was inhibited by knockdown of PPARdelta. Finally, heparin-binding EGF-like growth factor (HB-EGF), known to induce epidermal hyperplasia and itself overexpressed in psoriasis, was identified as a direct target gene of PPARdelta. The present data suggest that activation of PPARdelta is a major event in psoriasis, contributing to the hyperproliferative phenotype by induction of HB-EGF.
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Baechler EC, Batliwalla FM, Reed AM, Peterson EJ, Gaffney PM, Moser KL, Gregersen PK, Behrens TW. Gene expression profiling in human autoimmunity. Immunol Rev 2007; 210:120-37. [PMID: 16623768 DOI: 10.1111/j.0105-2896.2006.00367.x] [Citation(s) in RCA: 82] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Human autoimmune diseases are well suited for the application of gene expression profiling. Sampling of blood cells and target tissues has already revealed many important pathways contributing to this spectrum of disorders, and many commonalities are emerging. For instance, clinically distinct diseases such as systemic lupus erythematosus, Sjögren's syndrome, dermatomyositis, and psoriasis all show evidence for dysregulation of the type I interferon pathway. These data suggest that autoimmune diseases will eventually be categorized at the level of gene expression. This work has led to advances in our understanding of disease pathogenesis and in the future promises to facilitate assessments of disease activity and improve targeting of therapies. Here, we review the literature on gene profiling in human autoimmune diseases and provide perspective on the current state of the art.
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Affiliation(s)
- Emily C Baechler
- University of Minnesota Medical School, Minneapolis, MN 55455, USA
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Bos JD. Psoriasis, innate immunity, and gene pools. J Am Acad Dermatol 2007; 56:468-71. [PMID: 17317489 DOI: 10.1016/j.jaad.2006.12.006] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2006] [Revised: 11/29/2006] [Accepted: 12/04/2006] [Indexed: 11/17/2022]
Abstract
Recently, emphasis has shifted from T cells to innate (natural) immunity as the possible major culprit in psoriasis. All known elements of innate immune responses are up-regulated in psoriasis lesions, which must have a polygenetic origin. We hypothesize that urbanized populations have been under evolutionary pressure that selects for increased innate immunity responses because those offer relative but immediate protection from epidemic infections. That would have resulted in a changing gene pool, in which alleles of polymorphisms associated with increased innate immunity responses have amplified in these populations. Having too many of these genes together in one individual would result in a relatively low number of infections. On the other hand, it would also result in a higher prevalence of diseases related to increased innate immunity, such as psoriasis, and perhaps also multiple sclerosis and rheumatoid arthritis. Indeed, in indigenous people (Inuit, Aborigines, Ami) who have not been under this selection pressure, morbidity due to infections is high and the prevalence of psoriasis is low or even absent.
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Affiliation(s)
- Jan D Bos
- Department of Dermatology, Academic Medical Centre, University of Amsterdam, Amsterdam, The Netherlands.
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Benoit S, Toksoy A, Ahlmann M, Schmidt M, Sunderkötter C, Foell D, Pasparakis M, Roth J, Goebeler M. Elevated serum levels of calcium-binding S100 proteins A8 and A9 reflect disease activity and abnormal differentiation of keratinocytes in psoriasis. Br J Dermatol 2006; 155:62-6. [PMID: 16792753 DOI: 10.1111/j.1365-2133.2006.07198.x] [Citation(s) in RCA: 113] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
BACKGROUND The expression of calcium-binding S100 molecules organized within the epidermal differentiation complex on chromosome 1q21 is disturbed in hyperproliferative skin diseases such as psoriasis. OBJECTIVES We studied whether serum levels of S100 proteins A8 (S100A8) and A9 (S100A9) are elevated in psoriasis, correlated their amounts with disease activity and identified potential cellular sources. METHODS Serum obtained from psoriasis patients or from healthy individuals was studied for S100A8 and S100A9 levels by enzyme-linked immunosorbent assay. Data were correlated to disease activity as reflected by the Psoriasis Area and Severity Index (PASI). Cellular sources of S100A8 and S100A9 were identified by in situ hybridization and immunohistochemistry of lesional psoriatic and nonlesional, nonpsoriatic skin. RESULTS A significant increase of S100A8/S100A9 serum levels was found in patients with psoriasis compared with healthy controls. Grading the patients into two groups of severity, individuals with a PASI of <15 showed serum levels of 705+/-120 ng mL-1 (mean+/-SEM, n=18), those with a PASI of >or=15 showed levels of 1315+/-150 ng mL-1 (n=32) while controls presented with 365+/-50 ng mL-1. Performing in situ hybridization of lesional psoriatic skin we detected a dramatic induction of both S100A8 and S100A9 mRNA and protein primarily in the suprabasal layers of the epidermis while expression was negligible in nonlesional, nonpsoriatic interfollicular epidermis. CONCLUSIONS Our data demonstrate that hyperproliferation and abnormal differentiation of psoriatic skin is associated with a massive upregulation and secretion of S100A8 and S100A9, suggesting not only a prominent role of these molecules during intracellular calcium-dependent signalling but also implying distinct extracellular functions.
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Affiliation(s)
- S Benoit
- Department of Dermatology, University of Würzburg, Würzburg, and Department of Dermatology, University Hospital Mannheim, Germany
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Reischl J, Schwenke S, Beekman JM, Mrowietz U, Stürzebecher S, Heubach JF. Increased expression of Wnt5a in psoriatic plaques. J Invest Dermatol 2006; 127:163-9. [PMID: 16858420 DOI: 10.1038/sj.jid.5700488] [Citation(s) in RCA: 126] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Psoriasis vulgaris is characterized by hyperproliferation and incomplete terminal differentiation of epidermal keratinocytes. Despite the established role of Wnt pathways in the regulation of stem cell proliferation and differentiation, they have not yet been associated with the pathophysiology of psoriasis. Here, we took biopsies from uninvolved and from lesional skin of 20 patients with plaque-type psoriasis. The biopsies were used for microarray RNA expression profiling. Based on paired samples from 13 patients, we defined 179 genes that were more than 2-fold differentially expressed in lesional skin. This list included 16 genes with known or possible association to the canonical Wnt/beta-catenin or the non-canonical Wnt/Ca2+ pathway. The expression of Wnt5a was 4-fold higher in lesional skin. Other Wnt molecules were largely unchanged (Wnt4 and Wnt16), or tended to be expressed at lower levels (Wnt7b). The mRNA expression levels of two inhibitory factors related to Wnt signaling, frizzled-related protein, and dickkopf homolog 2, were reduced in lesional skin, as was mRNA expression of cyclin D1. These findings were confirmed by quantitative reverse transcription-PCR experiments. We conclude that Wnt5a and other Wnt pathway genes are differentially expressed in psoriatic plaques. Their functional contribution to the pathophysiology of psoriasis needs to be elaborated.
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Affiliation(s)
- Joachim Reischl
- Schering AG Berlin, Global Pharmacogenomics, Biomarker Development and Non-Clinical Statistics, Berlin, Germany.
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Current Awareness on Comparative and Functional Genomics. Comp Funct Genomics 2005. [PMCID: PMC2447491 DOI: 10.1002/cfg.425] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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