101
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Penny SA, Malaker SA. Isolation of Major Histocompatibility Complex (MHC)-Associated Peptides by Immunoaffinity Purification. Methods Mol Biol 2019; 2024:235-243. [PMID: 31364053 DOI: 10.1007/978-1-4939-9597-4_14] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
MHC molecules on the surface of cells are responsible for the presentation of antigenic peptides to CD8+ and CD4+ T cells. Downstream analysis of these peptides can offer insight into various disease processes with an immune component, as in autoimmune diseases and cancer. A critical step in studying MHC-associated peptides is their isolation from MHC molecules on the surface of cells. In this chapter, we detail anti-MHC antibody conjugation to beads, immunoaffinity purification of the MHC molecules, and peptide elution. This method can be used for analysis of unmodified and/or posttranslationally modified peptides by mass spectrometry.
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Affiliation(s)
- Sarah A Penny
- Institute of Immunology and Immunotherapy, University of Birmingham, Birmingham, UK
| | - Stacy A Malaker
- Department of Chemistry, Stanford University, Stanford, CA, USA.
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102
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Benhadou F, Mintoff D, Del Marmol V. Psoriasis: Keratinocytes or Immune Cells - Which Is the Trigger? Dermatology 2018; 235:91-100. [PMID: 30566935 DOI: 10.1159/000495291] [Citation(s) in RCA: 140] [Impact Index Per Article: 23.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2018] [Accepted: 11/12/2018] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND Psoriasis is a common, chronic inflammatory skin disorder, which can significantly impact quality of life. Despite major breakthroughs in our understanding of the pathogenesis of psoriasis, the chronological order of the underlying mechanisms leading to the development of psoriatic plaques remains to be completely understood. SUMMARY Although psoriasis is classically perceived as a T-cell disease, it is now well recognized that T lymphocytes do not function in exclusivity. This theory is supported by evidence from transgenic murine models that develop marked psoriasiform disease. In addition, immune cells and cytokines regulate both early and late events involved in the pathogenesis of psoriasis. Key Messages: Psoriasis is a complex disease - a dynamic interplay between immune cells, keratinocytes, and various other skin-resident cells, such as endothelial and immune cells. The contribution of each cell type is crucial in the initiation and maintenance phases of psoriatic alterations.
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Affiliation(s)
- Farida Benhadou
- Dermatology Department, Erasme Hospital, Université Libre de Bruxelles - ULB, Brussels, Belgium, .,Laboratory of Stem Cells and Cancer, Unversité Libre de Bruxelles - ULB, Brussels, Belgium,
| | - Dillon Mintoff
- Dermatology Department, Sir Paul Boffa Hospital, Floriana, Malta
| | - Véronique Del Marmol
- Dermatology Department, Erasme Hospital, Université Libre de Bruxelles - ULB, Brussels, Belgium
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103
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Zhang Z, Xu JH. Investigation of Psoriasis Susceptibility Loci in Psoriatic Arthritis and a Generalized Pustular Psoriasis Cohort. J Investig Dermatol Symp Proc 2018; 19:S83-S85. [PMID: 30471759 DOI: 10.1016/j.jisp.2018.09.008] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Psoriasis is a common skin disease affecting 1-3% of the population (Gelfand et al., 2005; Ferrándiz et al., 2001). Approximately 30% of patients with psoriasis develop psoriatic arthritis (PsA), an inflammatory arthritis associated with psoriasis (Haroon et al., 2013; Prey et al., 2010). Generalized pustular psoriasis (GPP) affects about 1.3% of psoriasis patients. Recently, numerous novel susceptibility loci for psoriasis vulgaris (PsV) have been discovered thorough the application of genome-wide association studies (GWASs). Among them, the major histocompability complex is the locus with the strongest effect. Outside the major histocompability complex region, the novel susceptibility loci of PsV can be incorporated into an integrated pathogenic model comprising distinct signaling networks affecting skin barrier function, innate immune responses involving NF-κB signaling, and adaptive immune responses involving CD8 T cells and IL-23/IL-17-mediated lymphocyte signaling. Compared with PsV, only three GWASs were performed in PsA (Ellinghaus et al., 2012; Hüffmeier et al., 2010; Stuart et al., 2015), accompanied with other candidate gene studies, most of the PsA susceptibility loci have been proved to be associated with PsV. However, the genetic study of GPP is quite different. Up to now, IL36RN is the only associated gene of GPP that has been widely verified. The data are based on homozygosity mapping and direct sequencing in consanguineous Tunisian multiplex families with autosomal recessive GPP (Marrakchi et al., 2011). Some researchers suggested that GPP and PsV are etiologically distinct clinical entities (Capon, 2013), challenging the traditional understanding of psoriasis. The percentages of IL36RN-negative patients have been reported to range from 51% (Li et al., 2013) to 84% (Setta-Kaffetzi et al., 2013), implying that additional risk loci, genetic interactions, and other factors may account for the other GPP cases. Recently, more than 10 GWASs of PsV have identified a number of susceptibility loci, making PsV GWASs a rich source of potential risk loci for other subtypes of psoriasis. Here, we use information emerging form PsV GWASs to make inferences about the genetic etiology of PsA and GPP in a Chinese population.
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Affiliation(s)
- Zheng Zhang
- Department of Dermatology, Huashan Hospital, Fudan University, Huashan Hospital, Shanghai, People's Republic of China
| | - Jin-Hua Xu
- Department of Dermatology, Huashan Hospital, Fudan University, Huashan Hospital, Shanghai, People's Republic of China.
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104
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Mylonas A, Conrad C. Psoriasis: Classical vs. Paradoxical. The Yin-Yang of TNF and Type I Interferon. Front Immunol 2018; 9:2746. [PMID: 30555460 PMCID: PMC6283263 DOI: 10.3389/fimmu.2018.02746] [Citation(s) in RCA: 81] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2018] [Accepted: 11/07/2018] [Indexed: 12/11/2022] Open
Abstract
Chronic plaque psoriasis is a common debilitating skin disease. The identification of the pathogenic role of the TNF/IL-23/TH17 pathway has enabled the development of targeted therapies used in the clinic today. Particularly, TNF inhibitors have become a benchmark for the treatment of numerous chronic inflammatory diseases such as psoriasis. Although being highly effective in psoriasis treatment, anti-TNFs can themselves induce psoriasis-like skin lesions, a side effect called paradoxical psoriasis. In this review, we provide a comprehensive look at the different cellular and molecular players involved in classical plaque psoriasis and contrast its pathogenesis to paradoxical psoriasis, which is clinically similar but immunologically distinct. Classical psoriasis is a T-cell mediated autoimmune disease driven by TNF, characterised by T-cells memory, and a relapsing disease course. In contrast, paradoxical psoriasis is caused by the absence of TNF and represents an ongoing type-I interferon-driven innate inflammation that fails to elicit T-cell autoimmunity and lacks memory T cell-mediated relapses.
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Affiliation(s)
- Alessio Mylonas
- Department of Dermatology, University Hospital CHUV, Lausanne, Switzerland
| | - Curdin Conrad
- Department of Dermatology, University Hospital CHUV, Lausanne, Switzerland
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105
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Abstract
Major histocompatibility complex (MHC), also known as human leukocyte antigen (HLA) in humans, is one of the most genetically diverse regions in the genome of various species. The human MHC contains about 400 genes in a ∼7.6-Mb span located on the short arm of the chromosomal region 6p21.3. According to the NHGRI-EBI Catalog of published genome-wide association studies (http://www.ebi.ac.uk/gwas/) in HLA region, more than 500 associations have been identified for about 200 traits or phenotypes, including primary immune deficiencies, autoimmune diseases, susceptibility to infections, malignancies, and psychiatric conditions (Welter et al., 2014). For example, multiple sclerosis is associated with HLA-DRB1∗1501 (Handunnetthi et al., 2010); the control of HIV viral load is associated with variants near HLA-C (Kulpa and Collins, 2011). Some acute drug reactions are associated with specific HLA alleles. Carbamazepine-induced Stevens-Johnson syndrome and toxic epidermal necrolysis have been strongly associated with HLA-B*1502 in Han Chinese population and HLA-A*3101 in European populations (Chung et al., 2004; McCormack et al., 2011). The HLA-B*13:01 is associated with the development of the dapsone hypersensitivity syndrome among patients with leprosy (Zhang et al., 2013).
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Affiliation(s)
- Fusheng Zhou
- The Institute of Dermatology and Department of Dermatology, First Affiliated Hospital, Anhui Medical University, Hefei City, China
| | - Xuejun Zhang
- The Institute of Dermatology and Department of Dermatology, First Affiliated Hospital, Anhui Medical University, Hefei City, China.
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106
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Lee KY, Leung KS, Tang NLS, Wong MH. Discovering Genetic Factors for psoriasis through exhaustively searching for significant second order SNP-SNP interactions. Sci Rep 2018; 8:15186. [PMID: 30315195 PMCID: PMC6185942 DOI: 10.1038/s41598-018-33493-w] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2018] [Accepted: 09/28/2018] [Indexed: 12/24/2022] Open
Abstract
In this paper, we aim at discovering genetic factors of psoriasis through searching for statistically significant SNP-SNP interactions exhaustively from two real psoriasis genome-wide association study datasets (phs000019.v1.p1 and phs000982.v1.p1) downloaded from the database of Genotypes and Phenotypes. To deal with the enormous search space, our search algorithm is accelerated with eight biological plausible interaction patterns and a pre-computed look-up table. After our search, we have discovered several SNPs having a stronger association to psoriasis when they are in combination with another SNP and these combinations may be non-linear interactions. Among the top 20 SNP-SNP interactions being found in terms of pairwise p-value and improvement metric value, we have discovered 27 novel potential psoriasis-associated SNPs where most of them are reported to be eQTLs of a number of known psoriasis-associated genes. On the other hand, we have inferred a gene network after selecting the top 10000 SNP-SNP interactions in terms of improvement metric value and we have discovered a novel long distance interaction between XXbac-BPG154L12.4 and RNU6-283P which is not a long distance haplotype and may be a new discovery. Finally, our experiments with the synthetic datasets have shown that our pre-computed look-up table technique can significantly speed up the search process.
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Affiliation(s)
- Kwan-Yeung Lee
- Department of Computer Science and Engineering, the Chinese University of Hong Kong, Hong Kong, China.
| | - Kwong-Sak Leung
- Department of Computer Science and Engineering, the Chinese University of Hong Kong, Hong Kong, China
| | - Nelson L S Tang
- Department of Chemical Pathology, the Chinese University of Hong Kong, Hong Kong, China.
| | - Man-Hon Wong
- Department of Computer Science and Engineering, the Chinese University of Hong Kong, Hong Kong, China
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107
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Genomic alterations driving psoriasis pathogenesis. Gene 2018; 683:61-71. [PMID: 30287254 DOI: 10.1016/j.gene.2018.09.042] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2018] [Revised: 08/22/2018] [Accepted: 09/22/2018] [Indexed: 11/23/2022]
Abstract
Psoriasis is an immune mediated inflammatory skin disease with complex etiology involving interplay between environmental and genetic risk factors as disease initiating event. Enhanced understanding on genetic risk factors, differentially expressed genes, deregulated proteins and pathway-targeted therapeutics have established multiple axis of psoriasis pathogenesis. So far, loci in 424 genes are reported to be associated with psoriasis alongside copy number variations and epigenetic alterations. From clinical perspective, presence of specific genetic trigger(s) in individual psoriasis patient could aid in devising a personalized therapeutic strategy. Therefore, the review presents an updates on reported genomic alterations and their subsequent course of cutaneous inflammations that potentially drive to psoriasis.
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108
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Wiśniewski A, Matusiak Ł, Szczerkowska-Dobosz A, Nowak I, Kuśnierczyk P. HLA-C*06:02-independent, gender-related association of PSORS1C3 and PSORS1C1/CDSN single-nucleotide polymorphisms with risk and severity of psoriasis. Mol Genet Genomics 2018; 293:957-966. [PMID: 29589160 PMCID: PMC6061044 DOI: 10.1007/s00438-018-1435-4] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2017] [Accepted: 03/23/2018] [Indexed: 11/21/2022]
Abstract
Psoriasis vulgaris (PsV) is a common, chronic skin disease with a complex genetic and environmental etiology. We investigated, in 461 psoriatic patients and 454 healthy controls, the associations with psoriasis of four single-nucleotide polymorphisms (SNPs) from the psoriasis susceptibility 1 (PSORS1) interval: rs1062470 (PSORS1C1/CDSN), rs887466 (PSORS1C3), rs2894207 and rs10484554 (LOC105375015). The minor alleles of three SNPs (rs1062470A, rs2894207C and rs10484554T) strongly increased the disease risk (OR = 2.17, p < 0.0001; OR = 2.33, p < 0.0001 and OR = 2.68, p < 0.0001, respectively), whereas the minor A allele of rs887466 exerted a protective effect (OR = 0.73, p = 0.001). The strength of association for SNPs was the highest in patients with very early onset psoriasis (≤ 20 years), while in late onset psoriasis (> 40 years) the association was the weakest. The haplotype rs1062470A/rs887466G/rs2894207C/rs10484554T highly significantly increased the disease risk (OR = 3.58, p = 8.0e-027), while the haplotypes rs1062470G/rs887466A/rs2894207T/rs10484554C and rs1062470G/rs887466G/rs2894207T/rs10484554C were strongly protective (OR = 0.65, p = 0.002 and OR = 0.55, p = 2.4e-009, respectively). Additionally, we showed a HLA-C*06:02-independent gender-related effect of the rs887466A allele which was protective against psoriasis in males (OR = 0.61, p = 9.2e-005), but not in females (p = 0.66). We also demonstrated a correlation of PASI score value with rs1062470 genotype, and again only in male patients (p = 0.006) and HLA-C*06:02-independent. Our results show, for the first time, the male-only associations of the PSORS1C3 gene with psoriasis risk and of the PSORS1C1/CDSN gene with severity of disease. However, the age dependent associations need to be validated in larger sample sizes as well as in other populations.
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Affiliation(s)
- Andrzej Wiśniewski
- Laboratory of Immunogenetics and Tissue Immunology, Ludwik Hirszfeld Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, Wrocław, Poland.
| | - Łukasz Matusiak
- Department of Dermatology, Venereology and Allergology, Wroclaw Medical University, Wrocław, Poland
| | - Aneta Szczerkowska-Dobosz
- Department of Dermatology, Venereology and Allergology, Medical University of Gdańsk, Gdańsk, Poland
| | - Izabela Nowak
- Laboratory of Immunogenetics and Tissue Immunology, Ludwik Hirszfeld Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, Wrocław, Poland
| | - Piotr Kuśnierczyk
- Laboratory of Immunogenetics and Tissue Immunology, Ludwik Hirszfeld Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, Wrocław, Poland.
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109
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Abstract
Psoriasis is a chronic inflammatory disease that affects approximately 7.5 million people in the United States. The disease results in significant suffering, morbidity, and economic impact. Psoriasis is a multifaceted disease with a strong genetic component. Genetic data has revealed the presence of particular risk alleles in patients with psoriasis. Triggers of the disease have been elucidated and include factors such as trauma, obesity, infection, stress, and medications. At its core, psoriasis is a result of a dysfunctional immune response with T-cells at the center of immunogenesis. Clinically, psoriasis is characterized by discrete, erythematous scaly plaques. These lesions are often found on extensor surfaces, especially the elbows and knees. Although extensor surfaces are the prototypical destination of lesions, psoriasis may affect any area of the skin including the scalp, intertriginous areas, nails, palms, and soles. Location of lesions are important in assessing the impact on quality of life for patients. Diagnosis of psoriasis can typically be made clinically based on characteristic history and physical examination findings. In rare cases, biopsy may be needed to rule out other papulosquamous disease. Histologic findings of psoriasis can be non-specific and include marked epidermal hyperplasia, dilated vessels within the dermal papilla, and elongated rete ridges. Importantly, psoriasis is a systemic disease and organ systems outside of the skin must be considered. Co-morbidities of psoriasis include psoriatic arthritis, type 2 diabetes mellitus, cardiovascular disease, psychiatric disease, inflammatory bowel disease, neoplasms, and ocular disease. Management of psoriasis depends on the severity of the disease. In mild to moderate cases, topical medications are the cornerstone of treatment. Topical corticosteroids are the most commonly used and have limited systemic effects due to the localized application of medication. In moderate to severe cases of psoriasis, topical medications are ineffective and not feasible. Phototherapy and non-biologic systemic medications have been useful treatments; however, phototherapy is time consuming and non-biologic systemics have only modest response rates. In the last decade, biologic medications have become an important component of care for treating moderate to severe psoriasis. These medications target various cytokines responsible for psoriasis manifestations such as tumor necrosis factor (TNF-α), interleukin-12, interleukin-23, and interleukin-17. In the past 15 years, numerous biologic medications have been granted FDA approval, with the majority approved in the past several years. Some of the commonly used biologics include etanercept, adalimumab, infliximab, ixekizumab, secukinumab, brodalumab, guselkumab, ustekinumab, and tildrakizumab. Given the wealth of new biologics, current treatment guidelines have rapidly become outdated. This review provides summarized information of landmark trials that led to the approval of these medications.
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110
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Wang Y, Li Y, Qiao C, Liu X, Hao M, Shugart YY, Xiong M, Jin L. Nuclear Norm Clustering: a promising alternative method for clustering tasks. Sci Rep 2018; 8:10873. [PMID: 30022093 PMCID: PMC6052164 DOI: 10.1038/s41598-018-29246-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2017] [Accepted: 07/02/2018] [Indexed: 11/09/2022] Open
Abstract
Clustering techniques are widely used in many applications. The goal of clustering is to identify patterns or groups of similar objects within a dataset of interest. However, many cluster methods are neither robust nor sensitive to noises and outliers in real data. In this paper, we present Nuclear Norm Clustering (NNC, available at https://sourceforge.net/projects/nnc/), an algorithm that can be used in various fields as a promising alternative to the k-means clustering method. The NNC algorithm requires users to provide a data matrix M and a desired number of cluster K. We employed simulated annealing techniques to choose an optimal label vector that minimizes nuclear norm of the pooled within cluster residual matrix. To evaluate the performance of the NNC algorithm, we compared the performance of both 15 public datasets and 2 genome-wide association studies (GWAS) on psoriasis, comparing our method with other classic methods. The results indicate that NNC method has a competitive performance in terms of F-score on 15 benchmarked public datasets and 2 psoriasis GWAS datasets. So NNC is a promising alternative method for clustering tasks.
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Affiliation(s)
- Yi Wang
- Ministry of Education Key Laboratory of Contemporary Anthropology, Department of Anthropology and Human Genetics, School of Life Sciences, Fudan University, Shanghai, China.,Human Phenome Institute, Fudan University, Shanghai, China
| | - Yi Li
- Ministry of Education Key Laboratory of Contemporary Anthropology, Department of Anthropology and Human Genetics, School of Life Sciences, Fudan University, Shanghai, China.,Six Industrial Research Institute, Fudan University, Shanghai, China.,Human Phenome Institute, Fudan University, Shanghai, China
| | - Chunhong Qiao
- Ministry of Education Key Laboratory of Contemporary Anthropology, Department of Anthropology and Human Genetics, School of Life Sciences, Fudan University, Shanghai, China.,Human Phenome Institute, Fudan University, Shanghai, China
| | - Xiaoyu Liu
- Ministry of Education Key Laboratory of Contemporary Anthropology, Department of Anthropology and Human Genetics, School of Life Sciences, Fudan University, Shanghai, China.,Human Phenome Institute, Fudan University, Shanghai, China
| | - Meng Hao
- Ministry of Education Key Laboratory of Contemporary Anthropology, Department of Anthropology and Human Genetics, School of Life Sciences, Fudan University, Shanghai, China.,Human Phenome Institute, Fudan University, Shanghai, China
| | - Yin Yao Shugart
- State Key Laboratory of Genetic Engineering, Collaborative Innovation Center for Genetics and Development, School of Life Sciences, Fudan University, Shanghai, China. .,Unit on Statistical Genomics, Division of Intramural Division Programs, National, Institute of Mental Health, National Institutes of Health, Bethesda, MD, USA. .,Six Industrial Research Institute, Fudan University, Shanghai, China.
| | - Momiao Xiong
- Human Genetics Center, School of Public Health, University of Texas Houston Health Sciences Center, Houston, Texas, USA.
| | - Li Jin
- State Key Laboratory of Genetic Engineering, Collaborative Innovation Center for Genetics and Development, School of Life Sciences, Fudan University, Shanghai, China. .,Six Industrial Research Institute, Fudan University, Shanghai, China. .,Human Phenome Institute, Fudan University, Shanghai, China.
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111
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Yasukochi Y, Sakuma J, Takeuchi I, Kato K, Oguri M, Fujimaki T, Horibe H, Yamada Y. Identification of six novel susceptibility loci for dyslipidemia using longitudinal exome-wide association studies in a Japanese population. Genomics 2018; 111:520-533. [PMID: 29879492 DOI: 10.1016/j.ygeno.2018.05.015] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2018] [Revised: 05/09/2018] [Accepted: 05/18/2018] [Indexed: 12/20/2022]
Abstract
Recent genome-wide association studies have identified various dyslipidemia-related genetic variants. However, most studies were conducted in a cross-sectional manner. We thus performed longitudinal exome-wide association studies of dyslipidemia in a Japanese population. We used ~244,000 genetic variants and clinical data of 6022 Japanese individuals who had undergone annual health checkups for several years. After quality control, the association of dyslipidemia-related phenotypes with 24,691 single nucleotide polymorphisms (SNPs) was tested using the generalized estimating equation model. In total, 82 SNPs were significantly (P < 2.03 × 10-6) associated with dyslipidemia phenotypes. Of these SNPs, four (rs74416240 of TCHP, rs925368 of GIT2, rs7969300 of ATXN2, and rs12231744 of NAA25) and two (rs34902660 of SLC17A3 and rs1042127 of CDSN) were identified as novel genetic determinants of hypo-HDL- and hyper-LDL-cholesterolemia, respectively. A replication study using the cross-sectional data of 8310 Japanese individuals showed the association of the six identified SNPs with dyslipidemia-related traits.
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Affiliation(s)
- Yoshiki Yasukochi
- Department of Human Functional Genomics, Advanced Science Research Promotion Center, Mie University, Tsu 514-8507, Japan; CREST, Japan Science and Technology Agency, Kawaguchi 332-0012, Japan.
| | - Jun Sakuma
- CREST, Japan Science and Technology Agency, Kawaguchi 332-0012, Japan; Computer Science Department, College of Information Science, University of Tsukuba, Tsukuba 305-8573, Japan; RIKEN Center for Advanced Intelligence Project, Tokyo 103-0027, Japan
| | - Ichiro Takeuchi
- CREST, Japan Science and Technology Agency, Kawaguchi 332-0012, Japan; RIKEN Center for Advanced Intelligence Project, Tokyo 103-0027, Japan; Department of Computer Science, Nagoya Institute of Technology, Nagoya 466-8555, Japan
| | - Kimihiko Kato
- Department of Human Functional Genomics, Advanced Science Research Promotion Center, Mie University, Tsu 514-8507, Japan; Department of Internal Medicine, Meitoh Hospital, Nagoya 465-0025, Japan
| | - Mitsutoshi Oguri
- Department of Human Functional Genomics, Advanced Science Research Promotion Center, Mie University, Tsu 514-8507, Japan; Department of Cardiology, Kasugai Municipal Hospital, Kasugai 486-8510, Japan
| | - Tetsuo Fujimaki
- Department of Cardiovascular Medicine, Inabe General Hospital, Inabe 511-0428, Japan
| | - Hideki Horibe
- Department of Cardiovascular Medicine, Gifu Prefectural Tajimi Hospital, Tajimi 507-8522, Japan
| | - Yoshiji Yamada
- Department of Human Functional Genomics, Advanced Science Research Promotion Center, Mie University, Tsu 514-8507, Japan; CREST, Japan Science and Technology Agency, Kawaguchi 332-0012, Japan
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112
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Stawczyk-Macieja M, Szczerkowska-Dobosz A, Rębała K, Gabig-Cimińska M, Nowicki RJ, Haraś A, Cybulska L, Kapińska E. ERAP1 and HLA-C*06 are strongly associated with the risk of psoriasis in the population of northern Poland. Postepy Dermatol Alergol 2018; 35:286-292. [PMID: 30008647 PMCID: PMC6041718 DOI: 10.5114/ada.2018.76226] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2017] [Accepted: 04/13/2017] [Indexed: 02/01/2023] Open
Abstract
INTRODUCTION HLA-C*06 is a major psoriasis genetic risk marker. Recent reports have been focused on the role of different polymorphisms within genes involved in the functioning of the epidermal barrier and antigen processing in the pathogenesis of psoriasis. Data on the association between genetic variants of LCE3B_LCE3C, CSTA, ERAP1, ZAP70 and this dermatosis in the population from Eastern Europe are lacking. AIM To compare the association between known genetic risk markers and psoriasis in a cohort of northern Polish patients with psoriasis and healthy controls. MATERIAL AND METHODS Based on previous studies' results, five susceptibility loci: HLA-C, LCE3C_LCE3B, ERAP1, ZAP70 and CSTA were selected for genotyping in 148 patients with chronic plaque psoriasis and 146 healthy controls. Each patient with this disease was clinically assessed with the Psoriasis Area and Severity Index. RESULTS The study population showed a significant association of psoriasis and a single nucleotide polymorphism in the ERAP1 - rs26653 (p = 3.11 × 10-5) and HLA-C*06 allele (p = 1.02 × 10-11) when compared with the control group. The presence of HLA-C*06 or rs26653 G allele significantly increased the risk of psoriasis by 2.4 times or twice, respectively. Carrying rs26653 C allele considerably decreased the risk of psoriasis by 1.5 times. CONCLUSIONS In the context of pathogenesis of psoriasis, our findings might give the evidence on disturbances in the proteolytic processing of N-terminal fragments of antigens presented via major histocompatibility complex class I to T cells.
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Affiliation(s)
- Marta Stawczyk-Macieja
- Department of Dermatology, Venereology and Allergology, Medical University of Gdansk, Gdansk, Poland
| | - Aneta Szczerkowska-Dobosz
- Department of Dermatology, Venereology and Allergology, Medical University of Gdansk, Gdansk, Poland
| | - Krzysztof Rębała
- Department of Forensic Medicine, Medical University of Gdansk, Gdansk, Poland
| | - Magdalena Gabig-Cimińska
- Institute of Biochemistry and Biophysics, Polish Academy of Sciences, affiliated with the University of Gdansk, Gdansk, Poland
| | - Roman J. Nowicki
- Department of Dermatology, Venereology and Allergology, Medical University of Gdansk, Gdansk, Poland
| | - Agnieszka Haraś
- Department of Forensic Medicine, Medical University of Gdansk, Gdansk, Poland
| | - Lidia Cybulska
- Department of Forensic Medicine, Medical University of Gdansk, Gdansk, Poland
| | - Ewa Kapińska
- Department of Forensic Medicine, Medical University of Gdansk, Gdansk, Poland
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113
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Chanson M, Watanabe M, O'Shaughnessy EM, Zoso A, Martin PE. Connexin Communication Compartments and Wound Repair in Epithelial Tissue. Int J Mol Sci 2018; 19:ijms19051354. [PMID: 29751558 PMCID: PMC5983803 DOI: 10.3390/ijms19051354] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2018] [Revised: 04/26/2018] [Accepted: 04/26/2018] [Indexed: 12/20/2022] Open
Abstract
Epithelial tissues line the lumen of tracts and ducts connecting to the external environment. They are critical in forming an interface between the internal and external environment and, following assault from environmental factors and pathogens, they must rapidly repair to maintain cellular homeostasis. These tissue networks, that range from a single cell layer, such as in airway epithelium, to highly stratified and differentiated epithelial surfaces, such as the epidermis, are held together by a junctional nexus of proteins including adherens, tight and gap junctions, often forming unique and localised communication compartments activated for localised tissue repair. This review focuses on the dynamic changes that occur in connexins, the constituent proteins of the intercellular gap junction channel, during wound-healing processes and in localised inflammation, with an emphasis on the lung and skin. Current developments in targeting connexins as corrective therapies to improve wound closure and resolve localised inflammation are also discussed. Finally, we consider the emergence of the zebrafish as a concerted whole-animal model to study, visualise and track the events of wound repair and regeneration in real-time living model systems.
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Affiliation(s)
- Marc Chanson
- Department of Pediatrics and Cell Physiology & Metabolism, Geneva University Hospitals and University of Geneva, 1211 Geneva, Switzerland.
| | - Masakatsu Watanabe
- Graduate School of Frontier Biosciences, Osaka University, Osaka 565-0871, Japan.
| | - Erin M O'Shaughnessy
- Department of Life Sciences, School of Health and Life Sciences, Glasgow Caledonian University, Glasgow G4 0BA, UK.
| | - Alice Zoso
- Department of Pediatrics and Cell Physiology & Metabolism, Geneva University Hospitals and University of Geneva, 1211 Geneva, Switzerland.
| | - Patricia E Martin
- Department of Life Sciences, School of Health and Life Sciences, Glasgow Caledonian University, Glasgow G4 0BA, UK.
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114
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Abstract
Psoriatic arthritis is a major comorbidity of psoriasis that significantly impairs quality of life and physical function. Because skin lesions classically precede joint symptoms, dermatologists are in a unique position to identify patients at risk for psoriatic arthritis before irreversible joint damage occurs. Here we review the literature to identify the clinical and genetic factors most highly associated with development of psoriatic arthritis, with the goal of assisting dermatologists in risk-stratifying their psoriasis patients.
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Affiliation(s)
- Kristine Busse
- Department of Dermatology and Psoriasis Treatment Center, University of California—San Francisco, San Francisco, California
| | - Wilson Liao
- Department of Dermatology and Psoriasis Treatment Center, University of California—San Francisco, San Francisco, California
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115
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Prinz JC. Human Leukocyte Antigen-Class I Alleles and the Autoreactive T Cell Response in Psoriasis Pathogenesis. Front Immunol 2018; 9:954. [PMID: 29760713 PMCID: PMC5936982 DOI: 10.3389/fimmu.2018.00954] [Citation(s) in RCA: 55] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2018] [Accepted: 04/17/2018] [Indexed: 01/08/2023] Open
Abstract
Psoriasis is a complex immune-mediated inflammatory skin disease characterized by T-cell-driven epidermal hyperplasia. It occurs on a strong genetic predisposition. The human leukocyte antigen (HLA)-class I allele HLA-C*06:02 on psoriasis susceptibility locus 1 (PSORS1 on 6p21.3) is the main psoriasis risk gene. Other HLA-class I alleles encoding HLA molecules presenting overlapping peptide repertoires show associations with psoriasis as well. Outside the major histocompatibility complex region, genome-wide association studies identified more than 60 psoriasis-associated common gene variants exerting only modest individual effects. They mainly refer to innate immune activation and the interleukin-23/Th/c17 pathway. Given their strong risk association, explaining the role of the HLA-risk alleles is essential for elucidating psoriasis pathogenesis. Psoriasis lesions develop upon epidermal infiltration, activation, and expansion of CD8+ T cells. The unbiased analysis of a paradigmatic Vα3S1/Vβ13S1-T-cell receptor from a pathogenic epidermal CD8+ T-cell clone of an HLA-C*06:02+ psoriasis patient had revealed that HLA-C*06:02 directs an autoimmune response against melanocytes through autoantigen presentation, and it identified a peptide form ADAMTS-like protein 5 as an HLA-C*06:02-presented melanocyte autoantigen. These data demonstrate that psoriasis is an autoimmune disease, where the predisposing HLA-class I alleles promote organ-specific inflammation through facilitating a T-cell response against a particular skin-specific cell population. This review discusses the role of HLA-class I alleles in the pathogenic psoriatic T-cell immune response. It concludes that as a principle of T-cell driven HLA-associated inflammatory diseases proinflammatory traits promote autoimmunity in the context of certain HLA molecules that present particular autoantigens.
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Affiliation(s)
- Jörg Christoph Prinz
- Department of Dermatology, University Clinics, Ludwig-Maximilian-University of Munich, Munich, Germany
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116
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Brück J, Dringen R, Amasuno A, Pau-Charles I, Ghoreschi K. A review of the mechanisms of action of dimethylfumarate in the treatment of psoriasis. Exp Dermatol 2018; 27:611-624. [DOI: 10.1111/exd.13548] [Citation(s) in RCA: 67] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/22/2018] [Indexed: 12/19/2022]
Affiliation(s)
- Jürgen Brück
- Department of Dermatology; University Medical Center; Eberhard Karls University; Tübingen Germany
| | - Ralf Dringen
- Faculty 2 (Biology/Chemistry); Center for Biomolecular Interactions Bremen; University of Bremen; Bremen Germany
- Center for Environmental Research and Sustainable Technology; University of Bremen; Bremen Germany
| | | | | | - Kamran Ghoreschi
- Department of Dermatology; University Medical Center; Eberhard Karls University; Tübingen Germany
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117
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Borroni RG, Costanzo A. HLA-C*06 and psoriasis: susceptibility, phenotype, course and response to treatment. Br J Dermatol 2018; 178:825. [PMID: 29668091 DOI: 10.1111/bjd.16412] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- R G Borroni
- Dermatology, Department of Biomedical Sciences, Humanitas University, Pieve Emanuele MI, Italy.,Skin Pathology Laboratory, IRCCS Istituto Clinico Humanitas, Via Manzoni 56, 20089, Rozzano, MI, Italy
| | - A Costanzo
- Dermatology, Department of Biomedical Sciences, Humanitas University, Pieve Emanuele MI, Italy.,Skin Pathology Laboratory, IRCCS Istituto Clinico Humanitas, Via Manzoni 56, 20089, Rozzano, MI, Italy
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118
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Psoriasis patients demonstrate HLA-Cw*06:02 allele dosage-dependent T cell proliferation when treated with hair follicle-derived keratin 17 protein. Sci Rep 2018; 8:6098. [PMID: 29666398 PMCID: PMC5904118 DOI: 10.1038/s41598-018-24491-z] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2017] [Accepted: 04/03/2018] [Indexed: 01/10/2023] Open
Abstract
It is broadly accepted that psoriasis is an immune-mediated disease with a heritable component, but it is not clear what causes inflammation in the skin. Previous research suggests that fragments of the keratin 17 (K17) protein, which are constitutively expressed in hair follicles, could act as autoantigens. In this study, we synthesized the K17 protein from mRNA derived from hair follicles and tested whether it elicited T cell responses depending on the patient genotype at the major susceptibility locus HLA-Cw*06:02. We treated peripheral blood-derived cells with the K17 protein and its short fragments to assess the T cell proliferation response using flow cytometry. Our analyses show a significantly stronger increase in cell proliferation among patients but not in healthy controls. We then examined whether the variation in T cell proliferation correlated with the patient HLA-Cw*06:02 risk genotype. Considering the affected status and patient genotype as two independent predictors, we fitted a linear model and showed that the HLA-Cw*06:02 allele dosage strongly predicted the T cell response. Our study findings suggest that the K17 protein likely acts as an autoantigen in psoriasis and that patients’ risk genotype is strongly correlated with the magnitude of the response to this putative autoantigen.
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119
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Chuang SY, Lin CH, Sung CT, Fang JY. Murine models of psoriasis and their usefulness for drug discovery. Expert Opin Drug Discov 2018; 13:551-562. [PMID: 29663834 DOI: 10.1080/17460441.2018.1463214] [Citation(s) in RCA: 48] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
INTRODUCTION Psoriasis is an autoimmune skin disease characterized by red plaques with silver or white multilayered scales with a thickened acanthotic epidermis. Using mouse models of cutaneous inflammation, IL-23/Th17 was identified to have a potential key role in psoriasis. New treatments to slow this inflammatory skin disorder are urgently needed. To aid their discovery, a psoriasis animal model mimicking human psoriasis is urgently needed for their early preclinical evaluation. Areas covered: The authors review animal models of psoriasis and analyze the features and molecular mechanisms involved in these mouse models. The application of various mouse models of psoriasis for drug discovery and development has also been reviewed and the possible molecular targets in psoriasis for future anti-psoriatic drug design is discussed. Expert opinion: So far, it has been difficult to create an animal model that exactly simulates a human disease or condition. The xenotransplantation model is regarded as the closest to incorporating the complete genetic, phenotypic, and immunopathogenic processes of psoriasis. However, the imiquimod (IMQ)-induced model is the most prevalent among psoriatic mouse models due to its ease of use, convenience, and low cost. Further efforts to develop psoriasis-like skin models in mice are needed for the study and treatment of this complex disease.
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Affiliation(s)
- Shih-Yi Chuang
- a Research Center for Food and Cosmetic Safety and Research Center for Chinese Herbal Medicine , Chang Gung University of Science and Technology , Taoyuan , Taiwan
| | - Chih-Hung Lin
- b Center for General Education , Chang Gung University of Science and Technology , Taoyuan , Taiwan
| | - Calvin T Sung
- c School of Medicine , University of California , Riverside , USA
| | - Jia-You Fang
- a Research Center for Food and Cosmetic Safety and Research Center for Chinese Herbal Medicine , Chang Gung University of Science and Technology , Taoyuan , Taiwan.,d Pharmaceutics Laboratory, Graduate Institute of Natural Products , Chang Gung University , Taoyuan , Taiwan.,e Chinese Herbal Medicine Research Team, Healthy Aging Research Center , Chang Gung University , Taoyuan , Taiwan.,f Department of Anesthesiology , Chang Gung Memorial Hospital , Taoyuan , Taiwan
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120
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Boehncke WH. Systemic Inflammation and Cardiovascular Comorbidity in Psoriasis Patients: Causes and Consequences. Front Immunol 2018; 9:579. [PMID: 29675020 PMCID: PMC5895645 DOI: 10.3389/fimmu.2018.00579] [Citation(s) in RCA: 179] [Impact Index Per Article: 29.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2018] [Accepted: 03/07/2018] [Indexed: 11/26/2022] Open
Abstract
Psoriasis is a common inflammatory skin disease characterized by the appearance of red scaly plaques that can affect any part of the body. High prevalence, chronicity, disfiguration, disability, and associated comorbidity make it a challenge for clinicians of multiple specialties. Likewise, its complex pathogenesis, comprising inflammation, hyperproliferation, and angioneogenesis, intrigues numerous scientific disciplines, namely, immunology. From a clinical perspective, the severity of psoriasis is highlighted by its increased mortality, with cardiovascular diseases contributing the highest excess risk. From a scientific point of view, psoriasis has to be considered a systemic inflammatory condition, as blood biomarkers of inflammation are elevated and imaging techniques document sites of inflammation beyond the skin. While the association of psoriasis with cardiovascular diseases is now widely accepted, causes and consequences of this association are controversially discussed. This review comments on epidemiologic, genetic, and mechanistic studies that analyzed the relation between psoriasis and cardiovascular comorbidity. The hypothesis of psoriasis potentially being an independent cardiovascular risk factor, driving atherosclerosis via inflammation-induced endothelial dysfunction, will be discussed. Finally, consequences for the management of psoriasis with the objective to reduce the patients’ excess cardiovascular risk will be pointed out.
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Affiliation(s)
- Wolf-Henning Boehncke
- Department of Pathology and Immunology, Faculty of Medicine, University of Geneva, Geneva, Switzerland.,Division of Dermatology and Venereology, Geneva University Hospitals, Geneva, Switzerland
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121
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Ovejero-Benito MC, Muñoz-Aceituno E, Reolid A, Saiz-Rodríguez M, Abad-Santos F, Daudén E. Pharmacogenetics and Pharmacogenomics in Moderate-to-Severe Psoriasis. Am J Clin Dermatol 2018; 19:209-222. [PMID: 28921458 DOI: 10.1007/s40257-017-0322-9] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Pharmacogenetics is the study of variations in DNA sequence related to drug response. Moreover, the evolution of biotechnology and the sequencing of human DNA have allowed the creation of pharmacogenomics, a branch of genetics that analyzes human genes, the RNAs and proteins encoded by them, and the inter-and intra-individual variations in expression and function in relation to drug response. Pharmacogenetics and pharmacogenomics are being used to search for biomarkers that can predict response to systemic treatments, including those for moderate-to-severe psoriasis. Psoriasis is a chronic inflammatory disease with an autoimmune contribution. Although its etiology remains unknown, genetic, epigenetic, and environmental factors play a role in its development. Diverse systemic and biologic therapies are used to treat moderate-to-severe psoriasis. However, these treatments are not curative, and patients exhibit a wide range of responses to them. Moderate-to-severe psoriasis is usually treated with systemic immunomodulators such as acitretin, ciclosporin, and methotrexate. Anti-tumor necrosis factor (TNF) drugs (adalimumab, etanercept, or infliximab) are the first-line treatment for patients resistant to conventional systemic therapies. Although these therapies are very efficient, around 30-50% of patients have inadequate response. Ustekinumab is a monoclonal antibody that targets interleukin (IL)-12 and IL-23 and is used for moderate-to-severe psoriasis. New drugs (apremilast, brodalumab, guselkumab, ixekizumab, and secukinumab) have recently been approved for psoriasis. However, response rates to systemic treatments for moderate-to-severe psoriasis range from 35 to 80%, so it is necessary to identify non-invasive biomarkers that could help predict treatment outcomes of these therapies and individualize care for patients with psoriasis. These biomarkers could improve patient quality of life and reduce health costs and potential side effects. Pharmacogenetic studies have identified potential biomarkers for response to biologic treatments for moderate-to-severe psoriasis. These biomarkers need to be validated in clinical trials involving large cohorts of patients before they can be translated to the clinic. We review pharmacogenetics and pharmacogenomics studies for the treatment of moderate-to-severe plaque psoriasis.
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122
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Variants at HLA-A, HLA-C, and HLA-DQB1 Confer Risk of Psoriasis Vulgaris in Japanese. J Invest Dermatol 2018; 138:542-548. [DOI: 10.1016/j.jid.2017.10.001] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2017] [Revised: 09/22/2017] [Accepted: 10/02/2017] [Indexed: 11/20/2022]
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123
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Talamonti M, Galluzzo M, Zangrilli A, Papoutsaki M, Egan CG, Bavetta M, Tambone S, Fargnoli MC, Bianchi L. HLA-C*06:02 Does Not Predispose to Clinical Response Following Long-Term Adalimumab Treatment in Psoriatic Patients: A Retrospective Cohort Study. Mol Diagn Ther 2018; 21:295-301. [PMID: 28130758 DOI: 10.1007/s40291-017-0261-4] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
BACKGROUND The genetic basis of predisposition to psoriasis is recognised; however, the response to psoriasis treatment in patients with different genetic predisposition is poorly understood. OBJECTIVE To analyse the presence of the HLA-C*06:02 polymorphism in psoriatic patients treated with adalimumab. METHODS Genomic DNA was extracted from whole blood of 122 patients with moderate-to-severe psoriasis treated with adalimumab for 3 years. Genotyping was performed using PCR. Disease severity was assessed by the Psoriasis Area and Severity Index (PASI) at day 0 and after 1, 3, 6, 12, 24 and 36 months. Logistic regression was used to evaluate the association between dependent variables (including HLA-C*06:02 status) and achievement of PASI 50, 75 and 90. RESULTS No difference was observed after adalimumab treatment between C*06:02 positive (HLA-C*06:02-POS) patients (n = 46) and C*06:02 negative (HLA-C*06:02-NEG) patients (n = 76) over the 3-year follow-up period in terms of PASI response or time-course when PASI response was achieved. However, a small, but non-statistically significant difference was noted between genotypes for PASI 50 at 1 month (HLA-C*06:02-NEG: 44.7% vs. HLA-C*06:02-POS: 56.5%) and at 3 months (HLA-C*06:02-NEG: 71.1% vs. HLA-C*06:02-POS: 80.4%). Simple logistic regression analysis did not reveal an association between independent variables (including C*06:02 status) and PASI response; however, multivariate regression revealed that gender (females better than males) was associated with achievement of PASI 50 at month 1 (OR 0.34, 95% CI 0.16-0.72, p = 0.005) and of PASI 75 at 3 months (OR 0.36, 95% CI 0.16-0.8, p = 0.012). CONCLUSION Adalimumab reduced long-term severity in patients with moderate-severe psoriasis, independent of their HLA-C*06:02 status.
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Affiliation(s)
- Marina Talamonti
- Department of Dermatology, University of Rome Tor Vergata, Rome, Italy.
| | - Marco Galluzzo
- Department of Dermatology, University of Rome Tor Vergata, Rome, Italy
| | - Arianna Zangrilli
- Department of Dermatology, University of Rome Tor Vergata, Rome, Italy
| | - Marina Papoutsaki
- Third Department of Dermatology, A. Syggros Hospital, Athens, Greece
| | | | - Mauro Bavetta
- Department of Dermatology, University of Rome Tor Vergata, Rome, Italy
| | - Sara Tambone
- Department of Dermatology, University of L'Aquila, L'Aquila, Italy
| | | | - Luca Bianchi
- Department of Dermatology, University of Rome Tor Vergata, Rome, Italy
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124
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Scanning the Immunopathogenesis of Psoriasis. Int J Mol Sci 2018; 19:ijms19010179. [PMID: 29316717 PMCID: PMC5796128 DOI: 10.3390/ijms19010179] [Citation(s) in RCA: 187] [Impact Index Per Article: 31.2] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2017] [Revised: 01/03/2018] [Accepted: 01/04/2018] [Indexed: 12/18/2022] Open
Abstract
Psoriasis is a chronic inflammatory skin disease, the immunologic model of which has been profoundly revised following recent advances in the understanding of its pathophysiology. In the current model, a crosstalk between keratinocytes, neutrophils, mast cells, T cells, and dendritic cells is thought to create inflammatory and pro-proliferative circuits mediated by chemokines and cytokines. Various triggers, including recently identified autoantigens, Toll-like receptor agonists, chemerin, and thymic stromal lymphopoietin may activate the pathogenic cascade resulting in enhanced production of pro-inflammatory and proliferation-inducing mediators such as interleukin (IL)-17, tumor necrosis factor (TNF)-α, IL-23, IL-22, interferon (IFN)-α, and IFN-γ by immune cells. Among these key cytokines lie therapeutic targets for currently approved antipsoriatic therapies. This review aims to provide a comprehensive overview on the immune-mediated mechanisms characterizing the current pathogenic model of psoriasis.
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125
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Calautti E, Avalle L, Poli V. Psoriasis: A STAT3-Centric View. Int J Mol Sci 2018; 19:ijms19010171. [PMID: 29316631 PMCID: PMC5796120 DOI: 10.3390/ijms19010171] [Citation(s) in RCA: 132] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2017] [Revised: 12/22/2017] [Accepted: 01/04/2018] [Indexed: 12/24/2022] Open
Abstract
Signal Transducer and Activator of Transcription (STAT)3 has recently emerged as a key player in the development and pathogenesis of psoriasis and psoriatic-like inflammatory conditions. Indeed, STAT3 hyperactivation has been reported in virtually every cell type involved in disease initiation and maintenance, and this factor mediates the signal of most cytokines that are involved in disease pathogenesis, including the central Interleukin (IL)-23/IL-17/IL-22 axis. Despite the recent availability of effective biological agents (monoclonal antibodies) against IL-17 and IL-23, which have radically changed the current standard of disease management, the possibility of targeting either STAT3 itself or, even better, the family of upstream activators Janus kinases (JAK1, 2, 3, and TYK2) offers additional therapeutic options. Due to the oral/topical administration modality of these small molecule drugs, their lower cost, and the reduced risk of eliciting adverse immune responses, these compounds are being actively scrutinized in clinical settings. Here, we summarize the main pathological features of psoriatic conditions that provide the rationale for targeting the JAK/STAT3 axis in disease treatment.
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Affiliation(s)
- Enzo Calautti
- Department of Molecular Biotechnology and Health Sciences, University of Torino, 10126 Torino, Italy.
| | - Lidia Avalle
- Department of Molecular Biotechnology and Health Sciences, University of Torino, 10126 Torino, Italy.
| | - Valeria Poli
- Department of Molecular Biotechnology and Health Sciences, University of Torino, 10126 Torino, Italy.
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126
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Conrad C, Di Domizio J, Mylonas A, Belkhodja C, Demaria O, Navarini AA, Lapointe AK, French LE, Vernez M, Gilliet M. TNF blockade induces a dysregulated type I interferon response without autoimmunity in paradoxical psoriasis. Nat Commun 2018; 9:25. [PMID: 29295985 PMCID: PMC5750213 DOI: 10.1038/s41467-017-02466-4] [Citation(s) in RCA: 165] [Impact Index Per Article: 27.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2016] [Accepted: 12/01/2017] [Indexed: 02/08/2023] Open
Abstract
Although anti-tumor necrosis factor (TNF) agents are highly effective in the treatment of psoriasis, 2–5% of treated patients develop psoriasis-like skin lesions called paradoxical psoriasis. The pathogenesis of this side effect and its distinction from classical psoriasis remain unknown. Here we show that skin lesions from patients with paradoxical psoriasis are characterized by a selective overexpression of type I interferons, dermal accumulation of plasmacytoid dendritic cells (pDC), and reduced T-cell numbers, when compared to classical psoriasis. Anti-TNF treatment prolongs type I interferon production by pDCs through inhibition of their maturation. The resulting type I interferon overexpression is responsible for the skin phenotype of paradoxical psoriasis, which, unlike classical psoriasis, is independent of T cells. These findings indicate that paradoxical psoriasis represents an ongoing overactive innate inflammatory process, driven by pDC-derived type I interferon that does not lead to T-cell autoimmunity. The pathogenesis of paradoxical psoriasis in patients receiving anti-TNF treatments for classical psoriasis is unclear. Here, the authors show that anti-TNF drugs enhance the production of type I interferon by plasmacytoid dendritic cells, causing skin lesions that, unlike classical psoriasis, lack T- cell autoimmunity.
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Affiliation(s)
- Curdin Conrad
- Department of Dermatology, University Hospital CHUV, Lausanne, 1011, Switzerland.
| | - Jeremy Di Domizio
- Department of Dermatology, University Hospital CHUV, Lausanne, 1011, Switzerland
| | - Alessio Mylonas
- Department of Dermatology, University Hospital CHUV, Lausanne, 1011, Switzerland
| | - Cyrine Belkhodja
- Department of Dermatology, University Hospital CHUV, Lausanne, 1011, Switzerland
| | - Olivier Demaria
- Department of Dermatology, University Hospital CHUV, Lausanne, 1011, Switzerland
| | - Alexander A Navarini
- Department of Dermatology, University Hospital of Zurich, Zurich, 8091, Switzerland
| | - Anne-Karine Lapointe
- Department of Dermatology, University Hospital CHUV, Lausanne, 1011, Switzerland
| | - Lars E French
- Department of Dermatology, University Hospital of Zurich, Zurich, 8091, Switzerland
| | - Maxime Vernez
- Department of Dermatology, University Hospital CHUV, Lausanne, 1011, Switzerland
| | - Michel Gilliet
- Department of Dermatology, University Hospital CHUV, Lausanne, 1011, Switzerland.
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127
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Ovejero-Benito MC, Prieto-Pérez R, Llamas-Velasco M, Muñoz-Aceituno E, Reolid A, Saiz-Rodríguez M, Belmonte C, Román M, Ochoa D, Talegón M, Cabaleiro T, Daudén E, Abad-Santos F. Polymorphisms associated with adalimumab and infliximab response in moderate-to-severe plaque psoriasis. Pharmacogenomics 2018; 19:7-16. [DOI: 10.2217/pgs-2017-0143] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Aim: This study evaluated the influence of pharmacogenetics in psoriatic patients treated with adalimumab and/or infliximab. Materials & methods: Prospective observational study evaluating the association of 124 polymorphisms with the response to adalimumab or infliximab (PASI75) in patients with moderate-to-severe plaque psoriasis at 3 months (n = 95) and 6 months of treatment (n = 90). Significant SNPs for univariate analysis were subjected to multivariate analysis. Results: Five SNPs were associated with PASI75 at 3 months: rs6661932 (IVL), rs2546890 (IL-12B), rs2145623 (NFKBIA), rs9304742 (ZNF816A) and rs645544 (SLC9A8). Furthermore, rs1061624 (TNFR1B) was associated with PASI75 at 6 months. Conclusion: Nevertheless, these biomarkers should be validated in large-scale studies before implementation in clinical practice.
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Affiliation(s)
- María C Ovejero-Benito
- Department of Clinical Pharmacology, Hospital Universitario de la Princesa, Instituto Teófilo Hernando, Universidad Autónoma de Madrid (UAM), Instituto de Investigación Sanitaria la Princesa (IIS-IP), E28006, Madrid, Spain
| | - Rocío Prieto-Pérez
- Department of Clinical Pharmacology, Hospital Universitario de la Princesa, Instituto Teófilo Hernando, Universidad Autónoma de Madrid (UAM), Instituto de Investigación Sanitaria la Princesa (IIS-IP), E28006, Madrid, Spain
| | - Mar Llamas-Velasco
- Department of Dermatology, Hospital Universitario de la Princesa, Instituto de Investigación Sanitaria la Princesa (IIS-IP), E28006, Madrid, Spain
| | - Ester Muñoz-Aceituno
- Department of Dermatology, Hospital Universitario de la Princesa, Instituto de Investigación Sanitaria la Princesa (IIS-IP), E28006, Madrid, Spain
| | - Alejandra Reolid
- Department of Dermatology, Hospital Universitario de la Princesa, Instituto de Investigación Sanitaria la Princesa (IIS-IP), E28006, Madrid, Spain
| | - Miriam Saiz-Rodríguez
- Department of Clinical Pharmacology, Hospital Universitario de la Princesa, Instituto Teófilo Hernando, Universidad Autónoma de Madrid (UAM), Instituto de Investigación Sanitaria la Princesa (IIS-IP), E28006, Madrid, Spain
| | - Carmen Belmonte
- Department of Clinical Pharmacology, Hospital Universitario de la Princesa, Instituto Teófilo Hernando, Universidad Autónoma de Madrid (UAM), Instituto de Investigación Sanitaria la Princesa (IIS-IP), E28006, Madrid, Spain
| | - Manuel Román
- Department of Clinical Pharmacology, Hospital Universitario de la Princesa, Instituto Teófilo Hernando, Universidad Autónoma de Madrid (UAM), Instituto de Investigación Sanitaria la Princesa (IIS-IP), E28006, Madrid, Spain
- SCReN Spanish Clinical Research Network, UICEC del Hospital de La Princesa; Servicio de Farmacología Clínica, E28006, Madrid, Spain
| | - Dolores Ochoa
- Department of Clinical Pharmacology, Hospital Universitario de la Princesa, Instituto Teófilo Hernando, Universidad Autónoma de Madrid (UAM), Instituto de Investigación Sanitaria la Princesa (IIS-IP), E28006, Madrid, Spain
- SCReN Spanish Clinical Research Network, UICEC del Hospital de La Princesa; Servicio de Farmacología Clínica, E28006, Madrid, Spain
| | - María Talegón
- Department of Clinical Pharmacology, Hospital Universitario de la Princesa, Instituto Teófilo Hernando, Universidad Autónoma de Madrid (UAM), Instituto de Investigación Sanitaria la Princesa (IIS-IP), E28006, Madrid, Spain
| | - Teresa Cabaleiro
- Department of Clinical Pharmacology, Hospital Universitario de la Princesa, Instituto Teófilo Hernando, Universidad Autónoma de Madrid (UAM), Instituto de Investigación Sanitaria la Princesa (IIS-IP), E28006, Madrid, Spain
| | - Esteban Daudén
- Department of Dermatology, Hospital Universitario de la Princesa, Instituto de Investigación Sanitaria la Princesa (IIS-IP), E28006, Madrid, Spain
| | - Francisco Abad-Santos
- Department of Clinical Pharmacology, Hospital Universitario de la Princesa, Instituto Teófilo Hernando, Universidad Autónoma de Madrid (UAM), Instituto de Investigación Sanitaria la Princesa (IIS-IP), E28006, Madrid, Spain
- SCReN Spanish Clinical Research Network, UICEC del Hospital de La Princesa; Servicio de Farmacología Clínica, E28006, Madrid, Spain
- Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), Instituto de Salud Carlos III, E28029, Madrid, Spain
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128
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Abstract
Psoriasis is a chronic, common, inflammatory skin disease. The classic skin lesions can be described as sharply demarcated, scaly, erythematous plaques often found on the extensor surfaces. Several variants of psoriasis have also been described, including palmoplantar, pustular, erythrodermic, and guttate forms. Although psoriasis is usually diagnosed clinically, characteristic histologic findings include hyperkeratosis, parakeratosis, and acanthosis of the epidermis with dilated blood vessels and a lymphocytic infiltrate. Psoriasis is an immune-mediated disease, and although the etiology is not fully understood, genetic and environmental factors have been implicated. Importantly, psoriasis is associated with a number of systemic complications and comorbidities that have a high impact on affected patients.
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129
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Arakawa A, Vollmer S, Besgen P, Galinski A, Summer B, Kawakami Y, Wollenberg A, Dornmair K, Spannagl M, Ruzicka T, Thomas P, Prinz JC. Unopposed IL-36 Activity Promotes Clonal CD4 + T-Cell Responses with IL-17A Production in Generalized Pustular Psoriasis. J Invest Dermatol 2017; 138:1338-1347. [PMID: 29288651 DOI: 10.1016/j.jid.2017.12.024] [Citation(s) in RCA: 63] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2017] [Revised: 11/24/2017] [Accepted: 12/07/2017] [Indexed: 12/31/2022]
Abstract
Generalized pustular psoriasis (GPP) is the most severe psoriasis variant. Mutations in the IL-36 antagonist IL36RN, in CARD14 or AP1S3 provide genetic evidence for autoinflammatory etiology but cannot explain its pathogenesis completely. Here we demonstrate that unopposed IL-36 signaling promotes antigen-driven and likely pathogenic T-helper type 17 (Th17) responses in GPP. We observed that CD4+ T cells in blood and skin lesions of GPP patients were characterized by intense hyperproliferation, production of the GPP key mediator, IL-17A, and highly restricted TCR repertoires with identical T-cell clones in blood and skin lesions, indicating antigen-driven T-cell expansions. The clonally expanded CD4+ T cells were major producers of IL-17A. IL-36 signaling substantially enhanced TCR-mediated proliferation of CD4+ T cells. Moreover, GPP patients showed preferences for HLA-DRB1∗14, HLA-DQB1∗05, and HLA-DQB1∗03. We conclude that in GPP unopposed IL-36 signaling and certain HLA-class II alleles may cooperate in promoting antigen-driven Th17 responses, which in the obvious absence of exogenous triggers may reflect autoimmune reactions. This study reveals a pathogenic pathway where innate immune dysregulation promotes T-cell-mediated inflammation in GPP.
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Affiliation(s)
- Akiko Arakawa
- Department of Dermatology and Allergology, University Hospital, Ludwig-Maximilian-University, Munich, Germany.
| | - Sigrid Vollmer
- Department of Dermatology and Allergology, University Hospital, Ludwig-Maximilian-University, Munich, Germany
| | - Petra Besgen
- Department of Dermatology and Allergology, University Hospital, Ludwig-Maximilian-University, Munich, Germany
| | - Adrian Galinski
- Department of Dermatology and Allergology, University Hospital, Ludwig-Maximilian-University, Munich, Germany
| | - Burkhard Summer
- Department of Dermatology and Allergology, University Hospital, Ludwig-Maximilian-University, Munich, Germany
| | - Yoshio Kawakami
- Department of Dermatology and Allergology, University Hospital, Ludwig-Maximilian-University, Munich, Germany
| | - Andreas Wollenberg
- Department of Dermatology and Allergology, University Hospital, Ludwig-Maximilian-University, Munich, Germany
| | - Klaus Dornmair
- Institute of Clinical Neuroimmunology, University Hospital, Ludwig-Maximilian-University, Munich, Germany
| | - Michael Spannagl
- Laboratory of Immunogenetics and Molecular Diagnostics, University Hospital, Ludwig-Maximilian-University, Munich, Germany
| | - Thomas Ruzicka
- Department of Dermatology and Allergology, University Hospital, Ludwig-Maximilian-University, Munich, Germany
| | - Peter Thomas
- Department of Dermatology and Allergology, University Hospital, Ludwig-Maximilian-University, Munich, Germany
| | - Jörg C Prinz
- Department of Dermatology and Allergology, University Hospital, Ludwig-Maximilian-University, Munich, Germany.
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130
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van Vugt LJ, van den Reek JMPA, Coenen MJH, de Jong EMGJ. A systematic review of pharmacogenetic studies on the response to biologics in patients with psoriasis. Br J Dermatol 2017. [PMID: 28646581 DOI: 10.1111/bjd.15753] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
BACKGROUND Biologics are indicated for treating moderate-to-severe psoriasis. As the number of biologics registered for the treatment of psoriasis increases, so does the need for biomarkers to guide personalized therapeutic decisions. Genetic variants might serve as predictors for treatment response, a field of research known as pharmacogenetics. OBJECTIVES To assess which genetic variants are associated with response to biologics in patients with psoriasis according to current literature. METHODS A systematic search was performed in Embase, MEDLINE, the Cochrane Library and Web of Science. In total, 26 papers were included in this systematic review; 24 original studies and two meta-analyses. Quality was assessed using a predesigned form and risk of bias was assessed using the Newcastle-Ottawa Scale. RESULTS The majority of studies reported a candidate gene approach, focusing on polymorphisms in genes related to the therapeutic target or to psoriasis susceptibility. Studied populations were small and results were divergent, especially for studies investigating tumour necrosis factor inhibitors. The evidence for the role of HLA-Cw6 in ustekinumab efficacy shows minimal heterogeneity, with a higher response rate among patients who were positive for HLA-Cw6 reported across three of five studies. CONCLUSIONS Pharmacogenetic studies in psoriasis have generated divergent results. Replication of findings in larger cohorts is required. Large-scale hypothesis-free searches for genetic biomarkers are needed to uncover the complete genetic background of outcomes for treatment with biologics.
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Affiliation(s)
- L J van Vugt
- Department of Dermatology, Radboud University Medical Centre, Nijmegen, the Netherlands.,Radboud Institute for Health Sciences (RIHS), Nijmegen, the Netherlands
| | - J M P A van den Reek
- Department of Dermatology, Radboud University Medical Centre, Nijmegen, the Netherlands.,Radboud Institute for Health Sciences (RIHS), Nijmegen, the Netherlands
| | - M J H Coenen
- Radboud Institute for Health Sciences (RIHS), Nijmegen, the Netherlands.,Department of Human Genetics, Radboud University Medical Centre, Nijmegen, the Netherlands
| | - E M G J de Jong
- Department of Dermatology, Radboud University Medical Centre, Nijmegen, the Netherlands.,Radboud Institute for Health Sciences (RIHS), Nijmegen, the Netherlands.,Radboud University, Nijmegen, the Netherlands
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131
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Abstract
Psoriasis is a chronic inflammatory systemic disease associated with an important physical and physiological burden. It primarily affects the skin, but it is associated with several serious medical co-morbidities. One third of total psoriatic cases have their onset during the pediatric age, although some of them may not be diagnosed until the patient reaches adulthood. Additionally, in the pediatric age, there is an association with several medical co-morbidities; thus, an early recognition of the disease and a subsequent appropriate approach may delay or even prevent considerable co-morbidities. Because children are not just 'small adults', specific guidelines for the diagnosis, management, and treatment of psoriasis are of extreme importance. However, these guidelines are still lacking in this age group. Most of the psoriasis treatments used in adults are not officially approved for the pediatric age and require off-label prescription. Moreover, efficacy and safety studies are lacking in this population, especially with long-term follow-up and outcomes. Many biologic agents have been recently approved for the treatment of psoriasis in children, while others are currently being studied. This bibliographic review aims to summarize the most relevant aspects, as well as updated information about the epidemiology, pathogenesis, clinical features, diagnosis, co-morbidities and treatment of pediatric psoriasis.
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132
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The Genetic Basis of Psoriasis. Int J Mol Sci 2017; 18:ijms18122526. [PMID: 29186830 PMCID: PMC5751129 DOI: 10.3390/ijms18122526] [Citation(s) in RCA: 133] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2017] [Revised: 11/21/2017] [Accepted: 11/22/2017] [Indexed: 12/16/2022] Open
Abstract
Psoriasis is widely regarded as a multifactorial condition which is caused by the interaction between inherited susceptibility alleles and environmental triggers. In the last decade, technological advances have enabled substantial progress in the understanding of disease genetics. Genome-wide association studies have identified more than 60 disease susceptibility regions, highlighting the pathogenic involvement of genes related to Th17 cell activation. This pathway has now been targeted by a new generation of biologics that have shown great efficacy in clinical trials. At the same time, the study of rare variants of psoriasis has identified interleukin (IL)-36 cytokines as important amplifiers of Th17 signaling and promising targets for therapeutic intervention. Here, we review these exciting discoveries, which highlight the translational potential of genetic studies.
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133
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Dand N, Mucha S, Tsoi LC, Mahil SK, Stuart PE, Arnold A, Baurecht H, Burden AD, Callis Duffin K, Chandran V, Curtis CJ, Das S, Ellinghaus D, Ellinghaus E, Enerback C, Esko T, Gladman DD, Griffiths CEM, Gudjonsson JE, Hoffman P, Homuth G, Hüffmeier U, Krueger GG, Laudes M, Lee SH, Lieb W, Lim HW, Löhr S, Mrowietz U, Müller-Nurayid M, Nöthen M, Peters A, Rahman P, Reis A, Reynolds NJ, Rodriguez E, Schmidt CO, Spain SL, Strauch K, Tejasvi T, Voorhees JJ, Warren RB, Weichenthal M, Weidinger S, Zawistowski M, Nair RP, Capon F, Smith CH, Trembath RC, Abecasis GR, Elder JT, Franke A, Simpson MA, Barker JN. Exome-wide association study reveals novel psoriasis susceptibility locus at TNFSF15 and rare protective alleles in genes contributing to type I IFN signalling. Hum Mol Genet 2017; 26:4301-4313. [PMID: 28973304 PMCID: PMC5886170 DOI: 10.1093/hmg/ddx328] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2017] [Revised: 08/15/2017] [Accepted: 08/18/2017] [Indexed: 02/06/2023] Open
Abstract
Psoriasis is a common inflammatory skin disorder for which multiple genetic susceptibility loci have been identified, but few resolved to specific functional variants. In this study, we sought to identify common and rare psoriasis-associated gene-centric variation. Using exome arrays we genotyped four independent cohorts, totalling 11 861 psoriasis cases and 28 610 controls, aggregating the dataset through statistical meta-analysis. Single variant analysis detected a previously unreported risk locus at TNFSF15 (rs6478108; P = 1.50 × 10-8, OR = 1.10), and association of common protein-altering variants at 11 loci previously implicated in psoriasis susceptibility. We validate previous reports of protective low-frequency protein-altering variants within IFIH1 (encoding an innate antiviral receptor) and TYK2 (encoding a Janus kinase), in each case establishing a further series of protective rare variants (minor allele frequency < 0.01) via gene-wide aggregation testing (IFIH1: pburden = 2.53 × 10-7, OR = 0.707; TYK2: pburden = 6.17 × 10-4, OR = 0.744). Both genes play significant roles in type I interferon (IFN) production and signalling. Several of the protective rare and low-frequency variants in IFIH1 and TYK2 disrupt conserved protein domains, highlighting potential mechanisms through which their effect may be exerted.
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Affiliation(s)
- Nick Dand
- Division of Genetics and Molecular Medicine, Faculty of Life Sciences & Medicine, King's College London, London, UK
| | - Sören Mucha
- Institute of Clinical Molecular Biology, Christian-Albrechts-University of Kiel, Kiel, Germany
| | - Lam C Tsoi
- Department of Dermatology
- Department of Computational Medicine & Bioinformatics, University of Michigan Medical School, Ann Arbor, MI, USA
- Department of Biostatistics, School of Public Health, University of Michigan, Ann Arbor, MI, USA
| | - Satveer K Mahil
- St John's Institute of Dermatology, Faculty of Life Sciences & Medicine, King's College London, London, UK
| | | | - Andreas Arnold
- Clinic and Polyclinic of Dermatology, University Medicine Greifswald, Greifswald, Germany
| | - Hansjörg Baurecht
- Department of Dermatology, Venereology and Allergy, University Hospital Schleswig-Holstein, Campus Kiel, Kiel, Germany
| | - A David Burden
- Institute of Infection, Inflammation and Immunity, University of Glasgow, Glasgow, UK
| | | | - Vinod Chandran
- Department of Medicine
- Department of Laboratory Medicine and Pathobiology
- Institute of Medical Science, University of Toronto, Toronto, ON, Canada
- Krembil Research Institute, University Health Network, Toronto, ON, Canada
| | - Charles J Curtis
- NIHR Biomedical Research Centre at South London and Maudsley NHS Foundation Trust and King’s College London, London, UK
- Social Genetic and Developmental Psychiatry Centre, Institute of Psychiatry, Psychology and Neuroscience, King’s College London, London, UK
| | - Sayantan Das
- Department of Biostatistics, School of Public Health, University of Michigan, Ann Arbor, MI, USA
| | - David Ellinghaus
- Institute of Clinical Molecular Biology, Christian-Albrechts-University of Kiel, Kiel, Germany
| | - Eva Ellinghaus
- Institute of Clinical Molecular Biology, Christian-Albrechts-University of Kiel, Kiel, Germany
| | - Charlotta Enerback
- Division of Cell Biology and Dermatology, Department of Clinical and Experimental Medicine, Linköping University, Linköping, Sweden
| | - Tõnu Esko
- Estonian Biobank, Estonian Genome Center, University of Tartu, Tartu, Estonia
| | - Dafna D Gladman
- Department of Medicine
- Institute of Medical Science, University of Toronto, Toronto, ON, Canada
- Krembil Research Institute, University Health Network, Toronto, ON, Canada
| | - Christopher E M Griffiths
- Dermatology Centre, Salford Royal Hospital, Manchester Academic Health Science Centre, University of Manchester, Manchester, UK
| | | | - Per Hoffman
- Genomics Research Group, Department of Biomedicine, University of Basel, Basel, Switzerland
- Institute of Human Genetics, University of Bonn, Bonn, Germany
| | - Georg Homuth
- Department of Functional Genomics, Interfaculty Institute for Genetics and Functional Genomics, University Medicine and Ernst-Moritz-Arndt-University Greifswald, Greifswald, Germany
| | - Ulrike Hüffmeier
- Institute of Human Genetics, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany
| | - Gerald G Krueger
- Department of Dermatology, University of Utah, Salt Lake City, UT, USA
| | | | - Sang Hyuck Lee
- NIHR Biomedical Research Centre at South London and Maudsley NHS Foundation Trust and King’s College London, London, UK
- Social Genetic and Developmental Psychiatry Centre, Institute of Psychiatry, Psychology and Neuroscience, King’s College London, London, UK
| | - Wolfgang Lieb
- Institute of Epidemiology and Biobank PopGen, Christian-Albrechts-University of Kiel, Kiel, Germany
| | - Henry W Lim
- Department of Dermatology, Henry Ford Hospital, Detroit, MI, USA
| | - Sabine Löhr
- Institute of Human Genetics, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany
| | - Ulrich Mrowietz
- Department of Dermatology, Venereology and Allergy, University Hospital Schleswig-Holstein, Campus Kiel, Kiel, Germany
| | | | - Markus Nöthen
- Institute of Human Genetics, University of Bonn, Bonn, Germany
| | - Annette Peters
- Institute of Genetic Epidemiology, Helmholtz Zentrum Munich, Neuherberg, Germany
| | - Proton Rahman
- Memorial University of Newfoundland, St. John's, NL, Canada
| | - André Reis
- Institute of Human Genetics, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany
| | - Nick J Reynolds
- Dermatological Sciences, Institute of Cellular Medicine, Newcastle University Medical School, Newcastle upon Tyne, UK
- Department of Dermatology, Royal Victoria Infirmary, Newcastle Hospitals NHS Foundation Trust, Newcastle upon Tyne, UK
| | - Elke Rodriguez
- Department of Dermatology, Venereology and Allergy, University Hospital Schleswig-Holstein, Campus Kiel, Kiel, Germany
| | - Carsten O Schmidt
- Institute for Community Medicine, Study of Health in Pomerania/KEF, University Medicine Greifswald, Greifswald, Germany
| | - Sarah L Spain
- Division of Genetics and Molecular Medicine, Faculty of Life Sciences & Medicine, King's College London, London, UK
| | - Konstantin Strauch
- Institute of Genetic Epidemiology, Helmholtz Zentrum Munich, Neuherberg, Germany
| | | | | | - Richard B Warren
- Dermatology Centre, Salford Road NHS Foundation Trust, Manchester Academic Health Science Centre, The University of Manchester, Manchester, UK
| | - Michael Weichenthal
- Department of Dermatology, University Medical Center Schleswig-Holstein, Campus Kiel, Kiel, Germany
| | - Stephan Weidinger
- Department of Dermatology, Venereology and Allergy, University Hospital Schleswig-Holstein, Campus Kiel, Kiel, Germany
| | - Matthew Zawistowski
- Department of Biostatistics, School of Public Health, University of Michigan, Ann Arbor, MI, USA
| | | | - Francesca Capon
- Division of Genetics and Molecular Medicine, Faculty of Life Sciences & Medicine, King's College London, London, UK
| | - Catherine H Smith
- St John's Institute of Dermatology, Faculty of Life Sciences & Medicine, King's College London, London, UK
| | - Richard C Trembath
- Division of Genetics and Molecular Medicine, Faculty of Life Sciences & Medicine, King's College London, London, UK
| | - Goncalo R Abecasis
- Department of Biostatistics, School of Public Health, University of Michigan, Ann Arbor, MI, USA
| | - James T Elder
- Department of Dermatology
- Ann Arbor Veterans Hospital, Ann Arbor, MI, USA
| | - Andre Franke
- Institute of Clinical Molecular Biology, Christian-Albrechts-University of Kiel, Kiel, Germany
| | - Michael A Simpson
- Division of Genetics and Molecular Medicine, Faculty of Life Sciences & Medicine, King's College London, London, UK
| | - Jonathan N Barker
- St John's Institute of Dermatology, Faculty of Life Sciences & Medicine, King's College London, London, UK
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134
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Prinz JC. Melanocytes: Target Cells of an HLA-C*06:02-Restricted Autoimmune Response in Psoriasis. J Invest Dermatol 2017; 137:2053-2058. [PMID: 28941475 DOI: 10.1016/j.jid.2017.05.023] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2017] [Revised: 05/08/2017] [Accepted: 05/26/2017] [Indexed: 12/17/2022]
Abstract
HLA-C*06:02 is the main psoriasis risk allele. By the unbiased analysis of a Vα3S1/Vβ13S1 T-cell receptor from pathogenic psoriatic CD8+ T cells, we had recently proven that HLA-C*06:02 directs an autoimmune response against melanocytes through autoantigen presentation in psoriasis and identified ADAMTSL5 as a melanocyte autoantigen. We concluded that psoriasis is based on a melanocyte-specific immune response and that HLA-C*06:02 may predispose to psoriasis via this newly identified autoimmune pathway. Understanding this pathway, however, requires more detailed explanation. It is based on the fact that an HLA class I-restricted autoreactive CD8+ T-cell response must be directed against a particular target cell type, because HLA class I molecules present peptide antigens generated from cytoplasmic (i.e., intracellular) proteins. This review summarizes the findings on the melanocyte-specific autoimmune response in the context of the immune mechanisms related to HLA function and T-cell receptor-antigen recognition. Identifying melanocytes as target cells of the psoriatic immune response now explains psoriasis as a primary autoimmune skin disease.
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Affiliation(s)
- Jörg Christoph Prinz
- Department of Dermatology, University Clinics, Ludwig Maximilian University of Munich, Munich, Germany.
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135
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Girolomoni G, Strohal R, Puig L, Bachelez H, Barker J, Boehncke W, Prinz J. The role of IL-23 and the IL-23/T H 17 immune axis in the pathogenesis and treatment of psoriasis. J Eur Acad Dermatol Venereol 2017; 31:1616-1626. [PMID: 28653490 PMCID: PMC5697699 DOI: 10.1111/jdv.14433] [Citation(s) in RCA: 172] [Impact Index Per Article: 24.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2017] [Accepted: 06/13/2017] [Indexed: 12/11/2022]
Abstract
Psoriasis is a chronic, immune-mediated disease affecting more than 100 million people worldwide and up to 2.2% of the UK population. The aetiology of psoriasis is thought to originate from an interplay of genetic, environmental, infectious and lifestyle factors. The manner in which genetic and environmental factors interact to contribute to the molecular disease mechanisms has remained elusive. However, the interleukin 23 (IL-23)/T-helper 17 (TH 17) immune axis has been identified as a major immune pathway in psoriasis disease pathogenesis. Central to this pathway is the cytokine IL-23, a heterodimer composed of a p40 subunit also found in IL-12 and a p19 subunit exclusive to IL-23. IL-23 is important for maintaining TH 17 responses, and levels of IL-23 are elevated in psoriatic skin compared with non-lesional skin. A number of agents that specifically inhibit IL-23p19 are currently in development for the treatment of moderate-to-severe plaque psoriasis, with recent clinical trials demonstrating efficacy with a good safety and tolerability profile. These data support the role of this cytokine in the pathogenesis of psoriasis. A better understanding of the IL-23/TH 17 immune axis is vital and will promote the development of additional targets for psoriasis and other inflammatory diseases that share similar genetic aetiology and pathogenetic pathways.
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Affiliation(s)
- G. Girolomoni
- Section of DermatologyDepartment of MedicineUniversity of VeronaVeronaItaly
| | - R. Strohal
- Department of Dermatology and VenerologyFederal Academic Teaching Hospital of FeldkirchFeldkirchAustria
| | - L. Puig
- Hospital de la Santa Creu i Sant PauUniversitat Autònoma de BarcelonaBarcelonaSpain
| | - H. Bachelez
- Sorbonne Paris CitéUniversité Paris DiderotParisFrance
- Department of DermatologyHôpital Saint‐LouisAssistance Publique‐Hôpitaux de Paris (AP‐HP)ParisFrance
- UMR INSERM U1163Institut ImagineParisFrance
| | - J. Barker
- St John's Institute of DermatologyKing's College LondonLondonUK
| | - W.H. Boehncke
- Division of DermatologyGeneva University HospitalsDepartment of Pathology and ImmunologyFaculty of MedicineUniversity of GenevaGenevaSwitzerland
| | - J.C. Prinz
- Department of DermatologyUniversity of MunichMunichGermany
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136
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LeQuang JA. Updates on Psoriasis and Cutaneous Oncology: Proceedings from the 2017 MauiDerm Meeting. THE JOURNAL OF CLINICAL AND AESTHETIC DERMATOLOGY 2017; 10:S8-S41. [PMID: 29410723 PMCID: PMC5788261] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Affiliation(s)
- Jo Ann LeQuang
- Ms. LeQuang is a medical writer with LeQ Medical in Angleton, Texas
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137
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Associations of ERAP1 coding variants and domain specific interaction with HLA-C∗06 in the early onset psoriasis patients of India. Hum Immunol 2017; 78:724-730. [PMID: 28867178 DOI: 10.1016/j.humimm.2017.08.006] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2017] [Revised: 08/20/2017] [Accepted: 08/29/2017] [Indexed: 11/23/2022]
Abstract
Interferon-γ-induced aminopeptidase ERAP1 trims peptides within the endoplasmic reticulum so that they can be loaded onto MHC class I and presented to the CD8+ T-cells. ERAP1 association and its interaction with HLA-C∗06 is controversial across different populations. We have investigated the association and possible functional role of non-synonymous SNPs at different exons of ERAP1 (rs26653: Arg127Pro, rs30187: Lys528Arg and rs27044: Gln730Glu) and their interactions with HLA-C∗06 in psoriasis. Significant associations of HLA-C∗06 (OR=5.47, P<2.2×10-16), rs30187 (OR 1.35, P=7.4×10-4) and rs27044 (OR=1.24, P=5.8×10-3) were observed. All three ERAP1 SNPs showed significant association only for HLA-C∗06 positive patients, while rs30187 and rs27044 showed significant association only for early onset patients (rs30187: OR=1.47, P=9.6×10-5; rs27044: OR=1.36, P=3.3×10-4). No differential expression of ERAP1 was observed either between paired uninvolved and involved skin tissues of psoriasis patients or between non-risk and risk variants in the involved skin. Significant epistatic interaction was observed between HLA-C∗06 and the SNP (rs27044) located at the peptide-binding cavity of ERAP1. Evolutionary conservation analysis among mammals showed confinement of Lys528 and Gln730 within highly conserved regions of ERAP1 and suggested the possible detrimental effect of this allele in ERAP1 regulation.
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138
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Mobbs JI, Illing PT, Dudek NL, Brooks AG, Baker DG, Purcell AW, Rossjohn J, Vivian JP. The molecular basis for peptide repertoire selection in the human leucocyte antigen (HLA) C*06:02 molecule. J Biol Chem 2017; 292:17203-17215. [PMID: 28855257 DOI: 10.1074/jbc.m117.806976] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2017] [Revised: 08/18/2017] [Indexed: 12/31/2022] Open
Abstract
Human leukocyte antigen (HLA)-C*06:02 is identified as the allele associated with the highest risk for the development of the autoimmune skin disease psoriasis. However, the diversity and mode of peptide presentation by the HLA-C*06:02 molecule remains unclear. Here, we describe the endogenous peptide repertoire of ∼3,000 sequences for HLA-C*06:02 that defines the peptide-binding motif for this HLA allomorph. We found that HLA-C*06:02 predominantly presents nonamer peptides with dominant arginine anchors at the P2 and P7 positions and a preference for small hydrophobic residues at the C terminus (PΩ). To determine the structural basis of this selectivity, we determined crystal structures of HLA-C*06:02 in complex with two self-peptides (ARTELYRSL and ARFNDLRFV) and an analogue of a melanocyte autoantigen (ADAMTSL5, VRSRR-abu-LRL) implicated in psoriasis. These structures revealed that HLA-C*06:02 possesses a deep peptide-binding groove comprising two electronegative B- and E-pockets that coincide with the preference for P2 and P7 arginine anchors. The ADAMTSL5 autoantigen possessed a P7-Leu instead of the P7-Arg residue, but nevertheless was accommodated within the HLA-C*06:02 antigen-binding cleft. Collectively, our results provide the structural basis for understanding peptide repertoire selection in HLA-C*06:02.
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Affiliation(s)
- Jesse I Mobbs
- From the Infection and Immunity Program and Department of Biochemistry and Molecular Biology, Biomedicine Discovery Institute, Monash University, Clayton 3800, Victoria, Australia
| | - Patricia T Illing
- From the Infection and Immunity Program and Department of Biochemistry and Molecular Biology, Biomedicine Discovery Institute, Monash University, Clayton 3800, Victoria, Australia
| | - Nadine L Dudek
- From the Infection and Immunity Program and Department of Biochemistry and Molecular Biology, Biomedicine Discovery Institute, Monash University, Clayton 3800, Victoria, Australia
| | - Andrew G Brooks
- the Department of Microbiology and Immunology, University of Melbourne, Peter Doherty Institute for Infection and Immunity, Melbourne 3000, Australia
| | - Daniel G Baker
- Janssen Research & Development, LLC, Horsham, Philadelphia, Pennsylvania 19044
| | - Anthony W Purcell
- From the Infection and Immunity Program and Department of Biochemistry and Molecular Biology, Biomedicine Discovery Institute, Monash University, Clayton 3800, Victoria, Australia,
| | - Jamie Rossjohn
- From the Infection and Immunity Program and Department of Biochemistry and Molecular Biology, Biomedicine Discovery Institute, Monash University, Clayton 3800, Victoria, Australia, .,the Australian Research Council Centre of Excellence in Advanced Molecular Imaging, Monash University, Clayton 3800, Victoria, Australia, and.,the Institute of Infection and Immunity, Cardiff University, School of Medicine, Cardiff CF14 4XN, Wales, United Kingdom
| | - Julian P Vivian
- From the Infection and Immunity Program and Department of Biochemistry and Molecular Biology, Biomedicine Discovery Institute, Monash University, Clayton 3800, Victoria, Australia, .,the Australian Research Council Centre of Excellence in Advanced Molecular Imaging, Monash University, Clayton 3800, Victoria, Australia, and
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139
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Kormann MSD, Dewerth A, Eichner F, Baskaran P, Hector A, Regamey N, Hartl D, Handgretinger R, Antony JS. Transcriptomic profile of cystic fibrosis patients identifies type I interferon response and ribosomal stalk proteins as potential modifiers of disease severity. PLoS One 2017; 12:e0183526. [PMID: 28846703 PMCID: PMC5573219 DOI: 10.1371/journal.pone.0183526] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2017] [Accepted: 08/04/2017] [Indexed: 12/25/2022] Open
Abstract
Cystic Fibrosis (CF) is the most common monogenic disease among people of Western European descent and caused by mutations in the CFTR gene. However, the disease severity is immensely variable even among patients with similar CFTR mutations due to the possible effect of 'modifier genes'. To identify genetic modifiers, we applied RNA-seq based transcriptomic analyses in CF patients with a mild and severe lung phenotype. Global gene expression and enrichment analyses revealed that genes of the type I interferon response and ribosomal stalk proteins are potential modifiers of CF related lung dysfunction. The results provide a new set of CF modifier genes with possible implications as new therapeutic targets for the treatment of CF.
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Affiliation(s)
- Michael S. D. Kormann
- Department of Pediatrics I, Pediatric Infectiology and Immunology, Translational Genomics and Gene Therapy in Pediatrics, University of Tuebingen, Tuebingen, Germany
| | - Alexander Dewerth
- Department of Pediatrics I, Pediatric Infectiology and Immunology, Translational Genomics and Gene Therapy in Pediatrics, University of Tuebingen, Tuebingen, Germany
| | - Felizitas Eichner
- Department of Pediatrics I, Pediatric Infectiology and Immunology, Translational Genomics and Gene Therapy in Pediatrics, University of Tuebingen, Tuebingen, Germany
| | - Praveen Baskaran
- Center for Quantitative Biology, University of Tuebingen, Tuebingen, Germany
| | - Andreas Hector
- University Children's Clinic Department of Paediatrics I, Paediatric Infectiology & Immunology, University of Tuebingen, Tuebingen, Germany
| | - Nicolas Regamey
- Division of Paediatric Respiratory Medicine and Department of Clinical Research, University of Bern, Bern, Switzerland
- Children’s Hopsital of Lucerne, Paediatric Pulmonology, Lucerne, Switzerland
| | - Dominik Hartl
- University Children's Clinic Department of Paediatrics I, Paediatric Infectiology & Immunology, University of Tuebingen, Tuebingen, Germany
| | - Rupert Handgretinger
- University Children's Clinic Department of Paediatrics I, Hematology and Oncology, University of Tuebingen, Tuebingen, Germany
| | - Justin S. Antony
- Department of Pediatrics I, Pediatric Infectiology and Immunology, Translational Genomics and Gene Therapy in Pediatrics, University of Tuebingen, Tuebingen, Germany
- * E-mail:
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140
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Natural Modulators of Endosomal Toll-Like Receptor-Mediated Psoriatic Skin Inflammation. J Immunol Res 2017; 2017:7807313. [PMID: 28894754 PMCID: PMC5574364 DOI: 10.1155/2017/7807313] [Citation(s) in RCA: 56] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2017] [Accepted: 07/25/2017] [Indexed: 02/08/2023] Open
Abstract
Psoriasis is a chronic inflammatory autoimmune disease that can be initiated by excessive activation of endosomal toll-like receptors (TLRs), particularly TLR7, TLR8, and TLR9. Therefore, inhibitors of endosomal TLR activation are being investigated for their ability to treat this disease. The currently approved biological drugs adalimumab, etanercept, infliximab, ustekinumab, ixekizumab, and secukizumab are antibodies against effector cytokines that participate in the initiation and development of psoriasis. Several immune modulatory oligonucleotides and small molecular weight compounds, including IMO-3100, IMO-8400, and CPG-52364, that block the interaction between endosomal TLRs and their ligands are under clinical investigation for their effectiveness in the treatment of psoriasis. In addition, several chemical compounds, including AS-2444697, PF-05387252, PF-05388169, PF-06650833, ML120B, and PHA-408, can inhibit TLR signaling. Although these compounds have demonstrated anti-inflammatory activity in animal models, their therapeutic potential for the treatment of psoriasis has not yet been tested. Recent studies demonstrated that natural compounds derived from plants, fungi, and bacteria, including mustard seed, Antrodia cinnamomea extract, curcumin, resveratrol, thiostrepton, azithromycin, and andrographolide, inhibited psoriasis-like inflammation induced by the TLR7 agonist imiquimod in animal models. These natural modulators employ different mechanisms to inhibit endosomal TLR activation and are administered via different routes. Therefore, they represent candidate psoriasis drugs and might lead to the development of new treatment options.
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141
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Liang Y, Sarkar MK, Tsoi LC, Gudjonsson JE. Psoriasis: a mixed autoimmune and autoinflammatory disease. Curr Opin Immunol 2017; 49:1-8. [PMID: 28738209 DOI: 10.1016/j.coi.2017.07.007] [Citation(s) in RCA: 144] [Impact Index Per Article: 20.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2017] [Accepted: 07/07/2017] [Indexed: 11/16/2022]
Abstract
In recent years marked progress has been made in our understanding of the critical biologic and immunologic pathways involved in psoriasis. Genetic studies have demonstrated that susceptibility to psoriasis involves components of both the adaptive and innate immune system and not surprisingly activation of both of these arms of the immune system is found in psoriatic skin. While adaptive immune responses predominate in chronic plaque psoriasis, innate and autoinflammatory responses dominate in pustular forms of psoriasis, with other clinical subtypes extending on a spectrum between plaque and pustular psoriasis. This makes psoriasis a unique disease where both autoimmune and autoinflammatory responses co-exist, with the balance between the two being critical in shaping its clinical presentation.
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Affiliation(s)
- Yun Liang
- Department of Dermatology, University of Michigan, 1910 Taubman Center, 1500 E. Medical Center Drive, Ann Arbor, MI 48109, USA
| | - Mrinal K Sarkar
- Department of Dermatology, University of Michigan, 1910 Taubman Center, 1500 E. Medical Center Drive, Ann Arbor, MI 48109, USA
| | - Lam C Tsoi
- Department of Dermatology, University of Michigan, 1910 Taubman Center, 1500 E. Medical Center Drive, Ann Arbor, MI 48109, USA; Department of Computational Medicine & Bioinformatics, University of Michigan, Ann Arbor, MI 48109, USA; Department of Biostatistics, School of Public Health, University of Michigan, Ann Arbor, MI 48109, USA
| | - Johann E Gudjonsson
- Department of Dermatology, University of Michigan, 1910 Taubman Center, 1500 E. Medical Center Drive, Ann Arbor, MI 48109, USA.
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142
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Prinz JC. Autoimmune aspects of psoriasis: Heritability and autoantigens. Autoimmun Rev 2017; 16:970-979. [PMID: 28705779 DOI: 10.1016/j.autrev.2017.07.011] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2017] [Accepted: 06/10/2017] [Indexed: 12/28/2022]
Abstract
Chronic immune-mediated disorders (IMDs) constitute a major health burden. Understanding IMD pathogenesis is facing two major constraints: Missing heritability explaining familial clustering, and missing autoantigens. Pinpointing IMD risk genes and autoimmune targets, however, is of fundamental importance for developing novel causal therapies. The strongest association of all IMDs is seen with human leukocyte antigen (HLA) alleles. Using psoriasis as an IMD model this article reviews the pathogenic role HLA molecules may have within the polygenic predisposition of IMDs. It concludes that disease-associated HLA alleles account for both missing heritability and autoimmune mechanisms by facilitating tissue-specific autoimmune responses through autoantigen presentation.
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Affiliation(s)
- Jörg Christoph Prinz
- Department of Dermatology, University Clinics, Ludwig-Maximilian-University of Munich, Munich, Germany.
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143
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144
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Coto-Segura P, Gonzalez-Lara L, Gómez J, Eiris N, Batalla A, Gómez C, Requena S, Queiro R, Alonso B, Iglesias S, Coto E. NFKBIZ in Psoriasis: Assessing the association with gene polymorphisms and report of a new transcript variant. Hum Immunol 2017; 78:435-440. [DOI: 10.1016/j.humimm.2017.02.008] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2017] [Revised: 02/25/2017] [Accepted: 02/27/2017] [Indexed: 01/25/2023]
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145
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van den Reek J, Coenen M, van de L'Isle Arias M, Zweegers J, Rodijk-Olthuis D, Schalkwijk J, Vermeulen S, Joosten I, van de Kerkhof P, Seyger M, Zeeuwen P, de Jong E. Polymorphisms inCD84,IL12BandTNFAIP3are associated with response to biologics in patients with psoriasis. Br J Dermatol 2017; 176:1288-1296. [DOI: 10.1111/bjd.15005] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/20/2016] [Indexed: 12/11/2022]
Affiliation(s)
- J.M.P.A. van den Reek
- Department of Dermatology; Radboud University Medical Center; Radboud Institutes for Molecular Life Sciences (RIMLS) and Health Sciences (RIHS); Nijmegen the Netherlands
| | - M.J.H. Coenen
- Department of Human Genetics; Radboud University Medical Center; Radboud Institutes for Molecular Life Sciences (RIMLS) and Health Sciences (RIHS); Nijmegen the Netherlands
| | - M. van de L'Isle Arias
- Department of Dermatology; Radboud University Medical Center; Radboud Institutes for Molecular Life Sciences (RIMLS) and Health Sciences (RIHS); Nijmegen the Netherlands
| | - J. Zweegers
- Department of Dermatology; Radboud University Medical Center; Radboud Institutes for Molecular Life Sciences (RIMLS) and Health Sciences (RIHS); Nijmegen the Netherlands
| | - D. Rodijk-Olthuis
- Department of Dermatology; Radboud University Medical Center; Radboud Institutes for Molecular Life Sciences (RIMLS) and Health Sciences (RIHS); Nijmegen the Netherlands
| | - J. Schalkwijk
- Department of Dermatology; Radboud University Medical Center; Radboud Institutes for Molecular Life Sciences (RIMLS) and Health Sciences (RIHS); Nijmegen the Netherlands
| | - S.H. Vermeulen
- Department of Health Evidence; Radboud University Medical Center; Radboud Institutes for Molecular Life Sciences (RIMLS) and Health Sciences (RIHS); Nijmegen the Netherlands
| | - I. Joosten
- Department of Immunology; Radboud University Medical Center; Radboud Institutes for Molecular Life Sciences (RIMLS) and Health Sciences (RIHS); Nijmegen the Netherlands
| | - P.C.M. van de Kerkhof
- Department of Dermatology; Radboud University Medical Center; Radboud Institutes for Molecular Life Sciences (RIMLS) and Health Sciences (RIHS); Nijmegen the Netherlands
| | - M.M.B. Seyger
- Department of Dermatology; Radboud University Medical Center; Radboud Institutes for Molecular Life Sciences (RIMLS) and Health Sciences (RIHS); Nijmegen the Netherlands
| | - P.L.J.M. Zeeuwen
- Department of Dermatology; Radboud University Medical Center; Radboud Institutes for Molecular Life Sciences (RIMLS) and Health Sciences (RIHS); Nijmegen the Netherlands
| | - E.M.G.J. de Jong
- Department of Dermatology; Radboud University Medical Center; Radboud Institutes for Molecular Life Sciences (RIMLS) and Health Sciences (RIHS); Nijmegen the Netherlands
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146
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Norman PJ, Norberg SJ, Guethlein LA, Nemat-Gorgani N, Royce T, Wroblewski EE, Dunn T, Mann T, Alicata C, Hollenbach JA, Chang W, Shults Won M, Gunderson KL, Abi-Rached L, Ronaghi M, Parham P. Sequences of 95 human MHC haplotypes reveal extreme coding variation in genes other than highly polymorphic HLA class I and II. Genome Res 2017; 27:813-823. [PMID: 28360230 PMCID: PMC5411776 DOI: 10.1101/gr.213538.116] [Citation(s) in RCA: 69] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2016] [Accepted: 02/10/2017] [Indexed: 12/26/2022]
Abstract
The most polymorphic part of the human genome, the MHC, encodes over 160 proteins of diverse function. Half of them, including the HLA class I and II genes, are directly involved in immune responses. Consequently, the MHC region strongly associates with numerous diseases and clinical therapies. Notoriously, the MHC region has been intractable to high-throughput analysis at complete sequence resolution, and current reference haplotypes are inadequate for large-scale studies. To address these challenges, we developed a method that specifically captures and sequences the 4.8-Mbp MHC region from genomic DNA. For 95 MHC homozygous cell lines we assembled, de novo, a set of high-fidelity contigs and a sequence scaffold, representing a mean 98% of the target region. Included are six alternative MHC reference sequences of the human genome that we completed and refined. Characterization of the sequence and structural diversity of the MHC region shows the approach accurately determines the sequences of the highly polymorphic HLA class I and HLA class II genes and the complex structural diversity of complement factor C4A/C4B. It has also uncovered extensive and unexpected diversity in other MHC genes; an example is MUC22, which encodes a lung mucin and exhibits more coding sequence alleles than any HLA class I or II gene studied here. More than 60% of the coding sequence alleles analyzed were previously uncharacterized. We have created a substantial database of robust reference MHC haplotype sequences that will enable future population scale studies of this complicated and clinically important region of the human genome.
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Affiliation(s)
- Paul J Norman
- Departments of Structural Biology and Microbiology & Immunology, Stanford University School of Medicine, Stanford, California 94305, USA
| | | | - Lisbeth A Guethlein
- Departments of Structural Biology and Microbiology & Immunology, Stanford University School of Medicine, Stanford, California 94305, USA
| | - Neda Nemat-Gorgani
- Departments of Structural Biology and Microbiology & Immunology, Stanford University School of Medicine, Stanford, California 94305, USA
| | - Thomas Royce
- Illumina Incorporated, San Diego, California 92122, USA
| | - Emily E Wroblewski
- Departments of Structural Biology and Microbiology & Immunology, Stanford University School of Medicine, Stanford, California 94305, USA
| | - Tamsen Dunn
- Illumina Incorporated, San Diego, California 92122, USA
| | - Tobias Mann
- Illumina Incorporated, San Diego, California 92122, USA
| | - Claudia Alicata
- Departments of Structural Biology and Microbiology & Immunology, Stanford University School of Medicine, Stanford, California 94305, USA
| | - Jill A Hollenbach
- Department of Neurology, University of California San Francisco School of Medicine, San Francisco, California 94158, USA
| | - Weihua Chang
- Illumina Incorporated, San Diego, California 92122, USA
| | | | | | - Laurent Abi-Rached
- Departments of Structural Biology and Microbiology & Immunology, Stanford University School of Medicine, Stanford, California 94305, USA
| | | | - Peter Parham
- Departments of Structural Biology and Microbiology & Immunology, Stanford University School of Medicine, Stanford, California 94305, USA
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147
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Deng Y, Chang C, Lu Q. The Inflammatory Response in Psoriasis: a Comprehensive Review. Clin Rev Allergy Immunol 2017; 50:377-89. [PMID: 27025861 DOI: 10.1007/s12016-016-8535-x] [Citation(s) in RCA: 261] [Impact Index Per Article: 37.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Psoriasis is a chronic inflammatory autoimmune disease characterized by an excessively aberrant hyperproliferation of keratinocytes. The pathogenesis of psoriasis is complex and the exact mechanism remains elusive. However, psoriasis is thought to result from a combination of genetic, epigenetic, and environmental influences. Recent studies have identified that epigenetic factors including dysregulated DNA methylation levels, abnormal histone modification and microRNAs expressions are involved in the development of psoriasis. The interplay of immune cells and cytokines is another critical factor in the pathogenesis of psoriasis. These factors or pathways include Th1/Th2 homeostasis, the Th17/Treg balance and the IL-23/Th17 axis. Th17 is believed particularly important in psoriasis due to its pro-inflammatory effects and its involvement in an integrated inflammatory loop with dendritic cells and keratinocytes, contributing to an overproduction of antimicrobial peptides, inflammatory cytokines, and chemokines that leads to amplification of the immune response. In addition, other pathways and signaling molecules have been found to be involved, including Th9, Th22, regulatory T cells, γδ T cells, CD8(+) T cells, and their related cytokines. Understanding the pathogenesis of psoriasis will allow us to develop increasingly efficient targeted treatment by blocking relevant inflammatory signaling pathways and molecules. There is no cure for psoriasis at the present time, and much of the treatment involves managing the symptoms. The biologics, while lacking the adverse effects associated with some of the traditional medications such as corticosteroids and methotrexate, have their own set of side effects, which may include reactivation of latent infections. Significant challenges remain in developing safe and efficacious novel targeted therapies that depend on a better understanding of the immunological dysfunction in psoriasis.
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Affiliation(s)
- Yaxiong Deng
- Department of Dermatology, Second Xiangya Hospital, Hunan Key Laboratory of Medical Epigenomics, Central South University, Changsha, Hunan, China
| | - Christopher Chang
- Division of Rheumatology, Allergy and Clinical Immunology, University of California at Davis, 451 Health Sciences Drive, Suite 6510, Davis, CA, 95616, USA
| | - Qianjin Lu
- Department of Dermatology, Second Xiangya Hospital, Hunan Key Laboratory of Medical Epigenomics, Central South University, Changsha, Hunan, China. .,Second Xiangya Hospital, Central South University, #139 Renmin Middle Rd, Changsha, Hunan, 410011, China.
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148
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Pso p27, a SERPINB3/B4-derived protein, is most likely a common autoantigen in chronic inflammatory diseases. Clin Immunol 2017; 174:10-17. [DOI: 10.1016/j.clim.2016.11.006] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2016] [Revised: 11/01/2016] [Accepted: 11/13/2016] [Indexed: 11/18/2022]
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149
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Pajic P, Lin YL, Xu D, Gokcumen O. The psoriasis-associated deletion of late cornified envelope genes LCE3B and LCE3C has been maintained under balancing selection since Human Denisovan divergence. BMC Evol Biol 2016; 16:265. [PMID: 27919236 PMCID: PMC5139038 DOI: 10.1186/s12862-016-0842-6] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2016] [Accepted: 11/23/2016] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND A common, 32kb deletion of LCE3B and LCE3C genes is strongly associated with psoriasis. We recently found that this deletion is ancient, predating Human-Denisovan divergence. However, it was not clear why negative selection has not removed this deletion from the population. RESULTS Here, we show that the haplotype block that harbors the deletion (i) retains high allele frequency among extant and ancient human populations; (ii) harbors unusually high nucleotide variation (π, P < 4.1 × 10-3); (iii) contains an excess of intermediate frequency variants (Tajima's D, P < 3.9 × 10-3); and (iv) has an unusually long time to coalescence to the most recent common ancestor (TSel, 0.1 quantile). CONCLUSIONS Our results are most parsimonious with the scenario where the LCE3BC deletion has evolved under balancing selection in humans. More broadly, this is consistent with the hypothesis that a balance between autoimmunity and natural vaccination through increased exposure to pathogens maintains this deletion in humans.
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Affiliation(s)
- Petar Pajic
- Department of Biological Sciences, University at Buffalo, Cooke 639, Buffalo, NY, 14260, USA
| | - Yen-Lung Lin
- Department of Biological Sciences, University at Buffalo, Cooke 639, Buffalo, NY, 14260, USA
| | - Duo Xu
- Department of Biological Sciences, University at Buffalo, Cooke 639, Buffalo, NY, 14260, USA
| | - Omer Gokcumen
- Department of Biological Sciences, University at Buffalo, Cooke 639, Buffalo, NY, 14260, USA.
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150
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HLA-C*06:02 Allele and Response to IL-12/23 Inhibition: Results from the Ustekinumab Phase 3 Psoriasis Program. J Invest Dermatol 2016; 136:2364-2371. [DOI: 10.1016/j.jid.2016.06.631] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2016] [Revised: 06/08/2016] [Accepted: 06/29/2016] [Indexed: 12/21/2022]
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