1
|
De Stefano L, Pallavicini FB, Mauric E, Piccin V, Vismara EM, Montecucco C, Bugatti S. Tumor necrosis factor-α inhibitor-related immune disorders. Autoimmun Rev 2023; 22:103332. [PMID: 37062440 DOI: 10.1016/j.autrev.2023.103332] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2023] [Accepted: 04/13/2023] [Indexed: 04/18/2023]
Abstract
Biotechnological monoclonal antibodies and receptor antagonists capable of targeting specific inflammatory actors, such as cytokines, cytokines receptors, co-stimulatory molecules or leukocyte populations, have emerged as an alternative to conventional therapies for treating systemic inflammatory diseases with immune pathogenesis. However, there is no doubt that, with a frequency that is not exceptionally high but also not negligible, immunotherapies can favour the development of systemic and organ-specific immune-mediated disorders. It has become increasingly evident that interference with a specific immune pathway may favour the activation of opposing compensatory signalling, which may exacerbate underlying subclinical disorders or cause immune-mediated diseases completely different from the underlying disease. The 'compensatory immunological switch' has emerged primarily in patients treated with tumor necrosis factor (TNF) -α inhibitors, the first biological drugs approved for treating systemic inflammatory diseases with immune pathogenesis. In this Review, we describe the clinical features and predisposing factors of the main TNF-α inhibitor-related immune disorders, organising them into subclinical serological autoimmunity, autoimmune disorders other than those for which TNF-α inhibitors are indicated, and paradoxical reactions. We also discuss the underlying pathogenetic mechanisms and precautions for use in the therapeutic management of these patients. Better understanding of the complex phenomenon of the 'compensatory immunological switch', which TNF-α inhibitors and other biological drugs might trigger, can help not only appropriately managing immune-mediated disorders, but also better interpreting the heterogeneity of the pathogenetic mechanisms underlying certain chronic inflammatory conditions that, although different from each other, are arbitrarily placed in the context of overly generic nosological entities.
Collapse
Affiliation(s)
- Ludovico De Stefano
- Department of Internal Medicine and Therapeutics, Università di Pavia, Italy; Division of Rheumatology, Fondazione IRCCS Policlinico San Matteo, Pavia, Italy.
| | | | - Eleonora Mauric
- Department of Internal Medicine and Therapeutics, Università di Pavia, Italy; Division of Rheumatology, Fondazione IRCCS Policlinico San Matteo, Pavia, Italy
| | - Veronica Piccin
- Department of Internal Medicine and Therapeutics, Università di Pavia, Italy; Division of Rheumatology, Fondazione IRCCS Policlinico San Matteo, Pavia, Italy
| | - Enrico Maria Vismara
- Department of Internal Medicine and Therapeutics, Università di Pavia, Italy; Division of Rheumatology, Fondazione IRCCS Policlinico San Matteo, Pavia, Italy
| | - Carlomaurizio Montecucco
- Department of Internal Medicine and Therapeutics, Università di Pavia, Italy; Division of Rheumatology, Fondazione IRCCS Policlinico San Matteo, Pavia, Italy
| | - Serena Bugatti
- Department of Internal Medicine and Therapeutics, Università di Pavia, Italy; Division of Rheumatology, Fondazione IRCCS Policlinico San Matteo, Pavia, Italy
| |
Collapse
|
2
|
Paradoxical Psoriasis Induced by Anti-TNFα Treatment: Evaluation of Disease-Specific Clinical and Genetic Markers. Int J Mol Sci 2020; 21:ijms21217873. [PMID: 33114187 PMCID: PMC7660646 DOI: 10.3390/ijms21217873] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2020] [Revised: 10/14/2020] [Accepted: 10/21/2020] [Indexed: 02/08/2023] Open
Abstract
Paradoxical psoriasis (PP) may occur during treatment with anti-tumor necrosis factor-alpha (TNF-α) drugs in various chronic immune-mediated diseases, mainly inflammatory bowel diseases (IBD) and psoriasis. In this study, clinical and genetic characteristics of PP arising in IBD and psoriatic patients were investigated to identify disease-specific markers of the paradoxical effect. A total of 161 IBD and psoriatic patients treated with anti-TNF-α drugs were included in the study. Of these patients, 39 developed PP. All patients were characterized for the main clinical–pathologic characteristics and genotyped for six candidate single nucleotide polymorphisms (SNPs) selected for their possible role in PP susceptibility. In IBD patients, the onset of PP was associated with female sex, presence of comorbidities, and use of adalimumab. IBD patients with PP had a higher frequency of the TNF-α rs1799964 rare allele (p = 0.006) compared with cases without the paradoxical effect, and a lower frequency of the human leucocyte antigen (HLA)-Cw06 rs10484554 rare allele (p = 0.03) compared with psoriatic patients with PP. Overall, these findings point to specific clinical and genetic characteristics of IBD patients with PP and provide data showing that genetic variability may be related to the paradoxical effect of anti-TNF-α drugs with possible implications into clinical practice.
Collapse
|
3
|
Syed S, Viazmina L, Mager R, Meri S, Haapasalo K. Streptococci and the complement system: interplay during infection, inflammation and autoimmunity. FEBS Lett 2020; 594:2570-2585. [PMID: 32594520 DOI: 10.1002/1873-3468.13872] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2020] [Revised: 06/12/2020] [Accepted: 06/15/2020] [Indexed: 11/09/2022]
Abstract
Streptococci are a broad group of Gram-positive bacteria. This genus includes various human pathogens causing significant morbidity and mortality. Two of the most important human pathogens are Streptococcus pneumoniae (pneumococcus) and Streptococcus pyogenes (group A streptococcus or GAS). Streptococcal pathogens have evolved to express virulence factors that enable them to evade complement-mediated attack. These include factor H-binding M (S. pyogenes) and pneumococcal surface protein C (PspC) (S. pneumoniae) proteins. In addition, S. pyogenes and S. pneumoniae express cytolysins (streptolysin and pneumolysin), which are able to destroy host cells. Sometimes, the interplay between streptococci, the complement, and antistreptococcal immunity may lead to an excessive inflammatory response or autoimmune disease. Understanding the fundamental role of the complement system in microbial clearance and the bacterial escape mechanisms is of paramount importance for understanding microbial virulence, in general, and, the conversion of commensals to pathogens, more specifically. Such insights may help to identify novel antibiotic and vaccine targets in bacterial pathogens to counter their growing resistance to commonly used antibiotics.
Collapse
Affiliation(s)
- Shahan Syed
- Department of Bacteriology and Immunology, University of Helsinki, Finland
| | - Larisa Viazmina
- Department of Bacteriology and Immunology, University of Helsinki, Finland
| | | | - Seppo Meri
- Department of Bacteriology and Immunology, University of Helsinki, Finland.,Humanitas University, Milano, Italy
| | - Karita Haapasalo
- Department of Bacteriology and Immunology, University of Helsinki, Finland
| |
Collapse
|
4
|
Pathogenesis of psoriasis in the "omic" era. Part II. Genetic, genomic and epigenetic changes in psoriasis. Postepy Dermatol Alergol 2020; 37:283-298. [PMID: 32774210 PMCID: PMC7394158 DOI: 10.5114/ada.2020.96243] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2020] [Accepted: 05/06/2020] [Indexed: 12/22/2022] Open
Abstract
Psoriasis is a multifactorial disease in which genetic, environmental and epigenetic factors regulating gene expression play a key role. In the “genomic era”, genome-wide association studies together with target genotyping platforms performed in different ethnic populations have found more than 50 genetic susceptible markers associated with the risk of psoriasis which have been identified so far. Up till now, the strongest association with the risk of the disease has been proved for HLA-C*06 gene. The majority of other psoriasis risk SNPs are situated near the genes encoding molecules involved in adaptive and innate immunity, and skin barrier function. Many contemporary studies indicate that the epigenetic changes: histone modification, promoter methylations, long non-coding and micro-RNA hyperexpression are considered as factors contributing to psoriasis pathogenesis as they regulate abnormal keratinocyte differentiation and proliferation, aberrant keratinocytes – inflammatory cells communication, neoangiogenesis and chronic inflammation. The circulating miRNAs detected in the blood may become specific markers in the diagnosis, prognosis and response to the treatment of the disease. The inhibition of expression in selected miRNAs may be a new promising therapy option for patients with psoriasis.
Collapse
|
5
|
Fania L, Morelli M, Scarponi C, Mercurio L, Scopelliti F, Cattani C, Scaglione GL, Tonanzi T, Pilla MA, Pagnanelli G, Mazzanti C, Girolomoni G, Cavani A, Madonna S, Albanesi C. Paradoxical psoriasis induced by TNF-α blockade shows immunological features typical of the early phase of psoriasis development. JOURNAL OF PATHOLOGY CLINICAL RESEARCH 2019; 6:55-68. [PMID: 31577850 PMCID: PMC6966707 DOI: 10.1002/cjp2.147] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/22/2019] [Revised: 09/17/2019] [Accepted: 09/19/2019] [Indexed: 12/11/2022]
Abstract
Immunomodulation with anti‐TNF‐α is highly effective in the treatment of various immune‐mediated inflammatory diseases, including hidradenitis suppurativa (HS). However, this may be responsible for unexpected paradoxical psoriasiform reactions. The pathogenic mechanisms underlying the induction of these events are not clear, even though the involvement of innate immune responses driven by plasmacytoid dendritic cells (pDC) has been described. In addition, the genetic predisposition to psoriasis of patients could be determinant. In this study, we investigated the immunological and genetic profiles of three HS patients without psoriasis who developed paradoxical psoriasiform reactions following anti‐TNF‐α therapy with adalimumab. We found that paradoxical psoriasiform skin reactions show immunological features common to the early phases of psoriasis development, characterized by cellular players of innate immunity, such as pDC, neutrophils, mast cells, macrophages, and monocytes. In addition, IFN‐β and IFN‐α2a, two type I IFNs typical of early psoriasis, were highly expressed in paradoxical skin reactions. Concomitantly, other innate immunity molecules, such as the catheledicin LL37 and lymphotoxin (LT)‐α and LT‐β were overproduced. Interestingly, these innate immunity molecules were abundantly expressed by keratinocytes, in addition to the inflammatory infiltrate. In contrast to classical psoriasis, psoriasiform lesions of HS patients showed a reduced number of IFN‐γ and TNF‐α‐releasing T lymphocytes. On the contrary, IL‐22 immunoreactivity was significantly augmented together with the IL‐36γ staining in leukocytes infiltrating the dermis. Finally, we found that all HS patients with paradoxical reactions carried allelic variants in genes predisposing to psoriasis. Among them, SNPs in ERAP1, NFKBIZ, and TNFAIP genes and in the HLA‐C genomic region were found.
Collapse
Affiliation(s)
- Luca Fania
- Laboratory of Experimental Immunology and 1st Dermatology Division, IDI-IRCCS, Rome, Italy
| | - Martina Morelli
- Laboratory of Experimental Immunology and 1st Dermatology Division, IDI-IRCCS, Rome, Italy.,Section of Dermatology, Department of Medicine, University of Verona, Verona, Italy
| | - Claudia Scarponi
- Laboratory of Experimental Immunology and 1st Dermatology Division, IDI-IRCCS, Rome, Italy
| | - Laura Mercurio
- Laboratory of Experimental Immunology and 1st Dermatology Division, IDI-IRCCS, Rome, Italy
| | - Fernanda Scopelliti
- Istituto Nazionale per la promozione della salute delle popolazioni Migranti ed il contrasto delle malattie della Povertà, INMP, Rome, Italy
| | - Caterina Cattani
- Istituto Nazionale per la promozione della salute delle popolazioni Migranti ed il contrasto delle malattie della Povertà, INMP, Rome, Italy
| | - Giovanni Luca Scaglione
- Laboratory of Experimental Immunology and 1st Dermatology Division, IDI-IRCCS, Rome, Italy.,Laboratory of Molecular Oncology, "Giovanni Paolo II" Foundation, Catholic University of Sacred Heart, Campobasso, Italy
| | - Tiziano Tonanzi
- Laboratory of Experimental Immunology and 1st Dermatology Division, IDI-IRCCS, Rome, Italy
| | - Maria Antonietta Pilla
- Laboratory of Experimental Immunology and 1st Dermatology Division, IDI-IRCCS, Rome, Italy
| | - Gianluca Pagnanelli
- Laboratory of Experimental Immunology and 1st Dermatology Division, IDI-IRCCS, Rome, Italy
| | - Cinzia Mazzanti
- Laboratory of Experimental Immunology and 1st Dermatology Division, IDI-IRCCS, Rome, Italy
| | - Giampiero Girolomoni
- Section of Dermatology, Department of Medicine, University of Verona, Verona, Italy
| | - Andrea Cavani
- Istituto Nazionale per la promozione della salute delle popolazioni Migranti ed il contrasto delle malattie della Povertà, INMP, Rome, Italy
| | - Stefania Madonna
- Laboratory of Experimental Immunology and 1st Dermatology Division, IDI-IRCCS, Rome, Italy
| | - Cristina Albanesi
- Laboratory of Experimental Immunology and 1st Dermatology Division, IDI-IRCCS, Rome, Italy
| |
Collapse
|
6
|
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.
Collapse
|
7
|
The Psoriasis Risk Allele HLA-C*06:02 Shows Evidence of Association with Chronic or Recurrent Streptococcal Tonsillitis. Infect Immun 2018; 86:IAI.00304-18. [PMID: 30037793 DOI: 10.1128/iai.00304-18] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2018] [Accepted: 07/11/2018] [Indexed: 12/16/2022] Open
Abstract
Pharyngeal tonsillitis is one of the most common upper respiratory tract infections, and group A streptococcus is the most important bacterial pathogen causing it. While most patients experience tonsillitis only rarely, a subset of patients suffers from recurrent or chronic tonsillitis or pharyngitis. The predisposing factors for recurring or chronic forms of this disease are not yet fully understood, but genetic predisposition has been suggested. A genetic association study using Illumina's Immunochip single-nucleotide polymorphism (SNP) array was performed to search for new genetic biomarkers in pharyngeal tonsillitis. More than 100,000 SNPs relevant to immune-mediated diseases were analyzed in a cohort of 95 patients subjected to tonsillectomy due to recurrent/chronic tonsillitis and 504 controls. Genetic association between the cases and controls showed strongest association with two peaks in the HLA locus (odds ratio [OR], 3.7 to 4.7; P = 4.9 × 10-6 to 5.7 × 10-6). Further analysis with imputed classical HLA alleles suggested the known psoriasis risk allele HLA-C*06:02 as a risk factor for tonsillitis (P = 4.8 × 10-4; OR, 2.3). In addition, the imputed HLA haplotype HLA-C*06:02/HLA-B*57:01, a reported risk haplotype in psoriasis, had the strongest risk for tonsillitis (P = 3.2 × 10-4; OR, 6.5). These findings further support the previously reported link between streptococcal throat infections and psoriasis.
Collapse
|
8
|
Melo FJ, Magina S. Clinical management of Anti-TNF-alpha-induced psoriasis or psoriasiform lesions in inflammatory bowel disease patients: a systematic review. Int J Dermatol 2018; 57:1521-1532. [DOI: 10.1111/ijd.14072] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/19/2018] [Accepted: 05/16/2018] [Indexed: 12/16/2022]
Affiliation(s)
- Francisco J. Melo
- Department of Pharmacology and Therapeutics; Faculty of Medicine of the University of Porto; Porto Portugal
| | - Sofia Magina
- Department of Pharmacology and Therapeutics; Faculty of Medicine of the University of Porto; Porto Portugal
- Dermatology and Venereology Service; São João Hospital Center, EPE; Porto Portugal
| |
Collapse
|
9
|
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.
Collapse
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
| |
Collapse
|
10
|
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
| |
Collapse
|
11
|
Abstract
Psoriasis is a multifactorial disease with a strong genetic background. HLA-Cw6 is one of the most strongly associated psoriasis susceptibility alleles. It is repeatedly observed to affect disease course, phenotypic features, severity, comorbidities and treatment outcomes. To the best of our knowledge, the roles of HLA-Cw6 in psoriasis have not yet been thoroughly reviewed. The worldwide frequency of the HLA-Cw6 allele varies greatly, with it being generally higher in white people than in Asians. The allele is associated with type I early-onset psoriasis. Stress, obesity and streptococcal pharyngitis are commonly observed in HLA-Cw6-positive patients. Phenotypically, HLA-Cw6 has been found to be associated with guttate psoriasis. In addition, patients carrying the allele are more likely to have arm, leg and trunk involvement, and the Koebner phenomenon. Patients with psoriatic arthritis with HLA-Cw6 more often have early onset and tend to show cutaneous symptoms before musculoskeletal symptoms. HLA-Cw6-positive patients have been shown in several studies to be more responsive to methotrexate and ustekinumab. However, this difference in ustekinumab efficacy was only moderate in a post-hoc analysis of a pivotal phase III study. HLA-Cw6 positivity also tends to be less frequent in high-need patients who fail conventional therapy. Small studies have also investigated the role of HLA-Cw6 in remission of psoriasis during pregnancy, and with the comorbidities of photosensitivity and atherosclerosis. Given the diverse nature of psoriasis pathogenesis, as well as the difference of HLA-Cw6 positivity in different ethnic groups, more studies are needed to confirm the role of HLA-Cw6 in psoriasis.
Collapse
Affiliation(s)
- L Chen
- Lake Erie College of Osteopathic Medicine, Bradenton, PA, U.S.A
| | - T-F Tsai
- Department of Dermatology, National Taiwan University Hospital and National Taiwan University College of Medicine, Taipei City, Taiwan
| |
Collapse
|
12
|
The Genetic Basis of Psoriasis. Int J Mol Sci 2017; 18:ijms18122526. [PMID: 29186830 PMCID: PMC5751129 DOI: 10.3390/ijms18122526] [Citation(s) in RCA: 138] [Impact Index Per Article: 19.7] [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.
Collapse
|
13
|
Guo H, Huang Y, Wu J, Zheng X, Ye L, Huang H, Wang W, Zhen Q, Wu J, Qian W, Cheng H, Fan X, Zhang X. Correlation analysis of the HLA-DPB1*05:01 and BTNL2 genes within the histocompatibility complex region with a clinical phenotype of psoriasis vulgaris in the Chinese Han population. J Gene Med 2017; 19. [PMID: 28581127 DOI: 10.1002/jgm.2961] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2017] [Revised: 05/29/2017] [Accepted: 06/01/2017] [Indexed: 12/21/2022] Open
Abstract
BACKGROUND The human major histocompatibility complex (MHC) is known to be highly polymorphic and has been identified to be associated with numerous diseases. The HLA-DPB1 and BTNL2 genes were associated with psoriasis for the first time. The present study aims to investigate the relevance of the HLA-DPB1 and BTNL2 genes with respect to clinical phenotypes of psoriasis vulgaris (PV). METHODS To investigate whether the HLA-DPB1 and BTNL2 polymorphisms were associated with clinical phenotypes of PV in Chinese Han population, we conducted an analysis in case-controls and case-only subjects (9906 controls and 8744 cases) via MHC targeted sequencing stratified analysis. RESULTS In cases and controls, analysis showed that the genotype of HLA-DPB1*05:01 was associated with type of guttate [p = 3.914 × 10-2 , odds ratio (OR = 0.9335)] and northern region (p = 1.182 × 10-3 , OR = 0.9108). In the case-only analysis, the genotype of HLA-DPB1*05:01 was significantly correlated with geographical region (p = 1.36 × 10-3 , OR = 1.134). In cases and controls, analysis showed that the genotype of BTNL2 (rs 41355746) was associated with being male (p = 2.563 × 10-2 , OR = 0.8897), early-onset (p = 9.399 × 10-3 , OR = 0.8856), guttate (p = 2.469 × 10-2 , OR = 0.8558) and family history (p = 1.51 × 10-4 , OR = 0.772). In the case-only analysis, the genotype of BTNL2 (rs41355746) was significantly correlated with family history (p = 1.768 × 10-3 , OR = 0.757) and age of onset (p = 3.818 × 10-2 , OR = 1.195). CONCLUSIONS The results of the present study indicate that the HLA-DPB1*05:01 gene was associated with the geographical region of PV and the BTNL2 gene was significantly associated with family history and age of onset of PV. In conclusion, the HLA-DPB1*05:01 and BTNL2 genes might be responsible for the complicacy of clinical features.
Collapse
Affiliation(s)
- Huimin Guo
- Institute of Dermatology and Department of Dermatology the first Affiliated Hospital, Anhui Medical University, Hefei, Anhui, China.,Key Laboratory of Dermatology, Anhui Medical University, Ministry of Education, Hefei, China
| | - Yong Huang
- Institute of Dermatology and Department of Dermatology the first Affiliated Hospital, Anhui Medical University, Hefei, Anhui, China.,Key Laboratory of Dermatology, Anhui Medical University, Ministry of Education, Hefei, China
| | - Juan Wu
- Institute of Dermatology and Department of Dermatology the first Affiliated Hospital, Anhui Medical University, Hefei, Anhui, China.,Key Laboratory of Dermatology, Anhui Medical University, Ministry of Education, Hefei, China
| | - Xiaodong Zheng
- Institute of Dermatology and Department of Dermatology the first Affiliated Hospital, Anhui Medical University, Hefei, Anhui, China.,Key Laboratory of Dermatology, Anhui Medical University, Ministry of Education, Hefei, China
| | - Lei Ye
- Institute of Dermatology and Department of Dermatology the first Affiliated Hospital, Anhui Medical University, Hefei, Anhui, China.,Key Laboratory of Dermatology, Anhui Medical University, Ministry of Education, Hefei, China
| | - Hequn Huang
- Institute of Dermatology and Department of Dermatology the first Affiliated Hospital, Anhui Medical University, Hefei, Anhui, China.,Key Laboratory of Dermatology, Anhui Medical University, Ministry of Education, Hefei, China
| | - Wenjun Wang
- Institute of Dermatology and Department of Dermatology the first Affiliated Hospital, Anhui Medical University, Hefei, Anhui, China.,Key Laboratory of Dermatology, Anhui Medical University, Ministry of Education, Hefei, China
| | - Qi Zhen
- Institute of Dermatology and Department of Dermatology the first Affiliated Hospital, Anhui Medical University, Hefei, Anhui, China.,Key Laboratory of Dermatology, Anhui Medical University, Ministry of Education, Hefei, China
| | - Jing Wu
- Institute of Dermatology and Department of Dermatology the first Affiliated Hospital, Anhui Medical University, Hefei, Anhui, China.,Key Laboratory of Dermatology, Anhui Medical University, Ministry of Education, Hefei, China
| | - Wenjun Qian
- Institute of Dermatology and Department of Dermatology the first Affiliated Hospital, Anhui Medical University, Hefei, Anhui, China.,Key Laboratory of Dermatology, Anhui Medical University, Ministry of Education, Hefei, China
| | - Hui Cheng
- Institute of Dermatology and Department of Dermatology the first Affiliated Hospital, Anhui Medical University, Hefei, Anhui, China.,Key Laboratory of Dermatology, Anhui Medical University, Ministry of Education, Hefei, China
| | - Xing Fan
- Institute of Dermatology and Department of Dermatology the first Affiliated Hospital, Anhui Medical University, Hefei, Anhui, China.,Key Laboratory of Dermatology, Anhui Medical University, Ministry of Education, Hefei, China
| | - Xuejun Zhang
- Institute of Dermatology and Department of Dermatology the first Affiliated Hospital, Anhui Medical University, Hefei, Anhui, China.,Key Laboratory of Dermatology, Anhui Medical University, Ministry of Education, Hefei, China
| |
Collapse
|
14
|
HLA-Cw6 allele, NFkB1 and NFkBIA polymorphisms play no role in predicting response to etanercept in psoriatic patients. Pharmacogenet Genomics 2016; 26:423-7. [DOI: 10.1097/fpc.0000000000000233] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
|
15
|
Sukhov A, Adamopoulos IE, Maverakis E. Interactions of the Immune System with Skin and Bone Tissue in Psoriatic Arthritis: A Comprehensive Review. Clin Rev Allergy Immunol 2016; 51:87-99. [PMID: 26780035 PMCID: PMC6080719 DOI: 10.1007/s12016-016-8529-8] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Cutaneous psoriasis (e.g., psoriasis vulgaris (PsV)) and psoriatic arthritis (PsA) are complex heterogeneous diseases thought to have similar pathophysiology. The soluble and cellular mediators of these closely related diseases are being elucidated through genetic approaches such as genome-wide association studies (GWAS), as well as animal and molecular models. Novel therapeutics targeting these mediators (IL-12, IL-23, IL-17, IL-17 receptor, TNF) are effective in treating both the skin and joint manifestations of psoriasis, reaffirming the shared pathophysiology of PsV and PsA. However, the molecular and cellular interactions between skin and joint disease have not been well characterized. Clearly, PsV and PsA are highly variable in terms of their clinical manifestations, and this heterogeneity can partially be explained by differences in HLA-associations (HLA-Cw*0602 versus HLA-B*27, for example). In addition, there are numerous other genetic susceptibility loci (LCE3, CARD14, NOS2, NFKBIA, PSMA6, ERAP1, TRAF3IP2, IL12RB2, IL23R, IL12B, TNIP1, TNFAIP3, TYK2) and geoepidemiologic factors that contribute to the wide variability seen in psoriasis. Herein, we review the complex interplay between the genetic, cellular, ethnic, and geographic mediators of psoriasis, focusing on the shared mechanisms of PsV and PsA.
Collapse
Affiliation(s)
- Andrea Sukhov
- Department of Dermatology, University of California, Davis, 3301 C St. Suite 1400, Sacramento, CA, 95816, USA
| | - Iannis E Adamopoulos
- Department of Internal Medicine, Division of Rheumatology, Allergy and Clinical Immunology, School of Medicine, University of California, CA, Davis, USA
| | - Emanual Maverakis
- Department of Dermatology, University of California, Davis, 3301 C St. Suite 1400, Sacramento, CA, 95816, USA.
| |
Collapse
|
16
|
René C, Lozano C, Eliaou JF. Expression of classical HLA class I molecules: regulation and clinical impacts: Julia Bodmer Award Review 2015. HLA 2016; 87:338-49. [PMID: 27060357 DOI: 10.1111/tan.12787] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2016] [Accepted: 03/04/2016] [Indexed: 12/19/2022]
Abstract
Human leukocyte antigen (HLA) class I genes are ubiquitously expressed, but in a tissue specific-manner. Their expression is primarily regulated at the transcriptional level and can be modulated both positively and negatively by different stimuli. Advances in sequencing technologies led to the identification of new regulatory variants located in the untranslated regions (UTRs), which could influence the expression. After a brief description of the mechanisms underlying the transcriptional regulation of HLA class I genes expression, we will review how the expression levels of HLA class I genes could affect biological and pathological processes. Then, we will discuss on the differential expression of HLA class I genes according to the locus, allele and UTR polymorphisms and its clinical impact. This interesting field of study led to a new dimension of HLA typing, going beyond a qualitative aspect.
Collapse
Affiliation(s)
- C René
- Department of Immunology, CHRU de Montpellier, University Hospital Saint-Eloi, Montpellier, France.,Faculté de Médecine, University of Montpellier, Montpellier, France.,INSERM U1183, Institute for Regenerative Medicine and Biotherapy (IRMB), CHU Montpellier, Montpellier, France
| | - C Lozano
- Department of Immunology, CHRU de Montpellier, University Hospital Saint-Eloi, Montpellier, France
| | - J-F Eliaou
- Department of Immunology, CHRU de Montpellier, University Hospital Saint-Eloi, Montpellier, France.,Faculté de Médecine, University of Montpellier, Montpellier, France.,INSERM U1194, IRCM, University of Montpellier, Montpellier, France
| |
Collapse
|
17
|
Ayala-Fontánez N, Soler DC, McCormick TS. Current knowledge on psoriasis and autoimmune diseases. PSORIASIS-TARGETS AND THERAPY 2016; 6:7-32. [PMID: 29387591 PMCID: PMC5683130 DOI: 10.2147/ptt.s64950] [Citation(s) in RCA: 78] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Psoriasis is a prevalent, chronic inflammatory disease of the skin, mediated by crosstalk between epidermal keratinocytes, dermal vascular cells, and immunocytes such as antigen presenting cells (APCs) and T cells. Exclusive cellular “responsibility” for the induction and maintenance of psoriatic plaques has not been clearly defined. Increased proliferation of keratinocytes and endothelial cells in conjunction with APC/T cell/monocyte/macrophage inflammation leads to the distinct epidermal and vascular hyperplasia that is characteristic of lesional psoriatic skin. Despite the identification of numerous susceptibility loci, no single genetic determinant has been identified as responsible for the induction of psoriasis. Thus, numerous other triggers of disease, such as environmental, microbial and complex cellular interactions must also be considered as participants in the development of this multifactorial disease. Recent advances in therapeutics, especially systemic so-called “biologics” have provided new hope for identifying the critical cellular targets that drive psoriasis pathogenesis. Recent recognition of the numerous co-morbidities and other autoimmune disorders associated with psoriasis, including inflammatory bowel disease, multiple sclerosis, rheumatoid arthritis, and systemic lupus erythematosus suggest common signaling elements and cellular mediators may direct disease pathogenesis. In this review, we discuss common cellular pathways and participants that mediate psoriasis and other autoimmune disorders that share these cellular signaling pathways.
Collapse
Affiliation(s)
- Nilmarie Ayala-Fontánez
- Department of Dermatology, Case Western Reserve University, Cleveland, OH, USA.,The Murdough Family Center for Psoriasis, University Hospitals Case Medical Center, Cleveland, OH, USA
| | - David C Soler
- Department of Dermatology, Case Western Reserve University, Cleveland, OH, USA.,The Murdough Family Center for Psoriasis, University Hospitals Case Medical Center, Cleveland, OH, USA
| | - Thomas S McCormick
- Department of Dermatology, Case Western Reserve University, Cleveland, OH, USA.,The Murdough Family Center for Psoriasis, University Hospitals Case Medical Center, Cleveland, OH, USA
| |
Collapse
|
18
|
Raposo I, Torres T. Nail psoriasis as a predictor of the development of psoriatic arthritis. ACTAS DERMO-SIFILIOGRAFICAS 2015. [DOI: 10.1016/j.adengl.2015.02.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
|
19
|
Raposo I, Torres T. Nail psoriasis as a predictor of the development of psoriatic arthritis. ACTAS DERMO-SIFILIOGRAFICAS 2015; 106:452-7. [PMID: 26026773 DOI: 10.1016/j.ad.2015.02.005] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2014] [Revised: 02/27/2015] [Accepted: 02/28/2015] [Indexed: 10/23/2022] Open
Abstract
Psoriatic arthritis is a psoriasis-related spondyloarthropathy that occurs in 20-30% of patients with psoriasis. Various imaging studies have demonstrated that there is a considerable proportion of undiagnosed psoriatic arthritis among patients with psoriasis. Since early detection and treatment of psoriatic arthritis could, ultimately, allow the prevention of clinical and radiologic progression of the disease, there is the need to establish clinical indicators to detect this risk. Nail psoriasis has been proposed as a predictor for the development of psoriatic arthritis. The inflammation involving the entheses, called enthesitis, is an early inflammatory change seen in psoriatic arthritis, and nail changes appear to result from the close relationship between the nail and the enthesis of the distal interphalangeal extensor tendon, one of the main entheseal compartments affected in psoriatic arthritis. As skin lesions precede articular symptoms in more than 75-80% of patients with psoriatic arthritis, dermatologists may play a key role in the early detection and management of psoriatic arthritis.
Collapse
Affiliation(s)
- I Raposo
- Department of Dermatology, Centro Hospitalar do Porto, Portugal
| | - T Torres
- Department of Dermatology, Centro Hospitalar do Porto, Portugal; Instituto de Ciências Biomédicas Abel Salazar, University of Porto, Portugal.
| |
Collapse
|
20
|
SanMiguel A, Grice EA. Interactions between host factors and the skin microbiome. Cell Mol Life Sci 2015; 72:1499-515. [PMID: 25548803 PMCID: PMC4376244 DOI: 10.1007/s00018-014-1812-z] [Citation(s) in RCA: 91] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2014] [Revised: 12/15/2014] [Accepted: 12/19/2014] [Indexed: 01/12/2023]
Abstract
The skin is colonized by an assemblage of microorganisms which, for the most part, peacefully coexist with their hosts. In some cases, these communities also provide vital functions to cutaneous health through the modulation of host factors. Recent studies have illuminated the role of anatomical skin site, gender, age, and the immune system in shaping the cutaneous ecosystem. Alterations to microbial communities have also been associated with, and likely contribute to, a number of cutaneous disorders. This review focuses on the host factors that shape and maintain skin microbial communities, and the reciprocal role of microbes in modulating skin immunity. A greater understanding of these interactions is critical to elucidating the forces that shape cutaneous populations and their contributions to skin homeostasis. This knowledge can also inform the tendency of perturbations to predispose and/or bring about certain skin disorders.
Collapse
Affiliation(s)
- Adam SanMiguel
- Department of Dermatology, University of Pennsylvania, Perelman School of Medicine, 421 Curie Blvd, 1007 Biomedical Research Building II/III, Philadelphia, PA 19104 USA
| | - Elizabeth A. Grice
- Department of Dermatology, University of Pennsylvania, Perelman School of Medicine, 421 Curie Blvd, 1007 Biomedical Research Building II/III, Philadelphia, PA 19104 USA
| |
Collapse
|
21
|
Teunissen MBM, Yeremenko NG, Baeten DLP, Chielie S, Spuls PI, de Rie MA, Lantz O, Res PCM. The IL-17A-producing CD8+ T-cell population in psoriatic lesional skin comprises mucosa-associated invariant T cells and conventional T cells. J Invest Dermatol 2014; 134:2898-2907. [PMID: 24945094 DOI: 10.1038/jid.2014.261] [Citation(s) in RCA: 116] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2013] [Revised: 04/25/2014] [Accepted: 05/05/2014] [Indexed: 12/14/2022]
Abstract
IL-17A is pivotal in the etiology of psoriasis, and CD8(+) T cells with the ability to produce this cytokine (Tc17 cells) are over-represented in psoriatic lesions. Here we demonstrate that the frequency of Tc17 cells in peripheral blood of psoriasis patients correlated with the clinical severity of the disease. Analysis of cutaneous-associated lymphocyte antigen expression showed that the blood Tc17 population contains a significantly higher proportion of cells with skin-homing potential compared with the CD8(+) T-cell population lacking IL-17A/IL-22 expression. IL-17A-producing CD8(+) T cells in blood have previously been reported to belong mainly to the mucosa-associated invariant T-cell (MAIT cell) lineage characterized by TCR Vα7.2 chain, CD161, IL-18Rα, and multidrug transporter ABCB1 expression. We demonstrate the presence of CD8(+) MAIT cells in the dermis and epidermis of psoriatic plaques, as well as healthy skin; however, IL-17A-producing CD8(+) MAIT cells were predominantly found in psoriatic skin. Notably, we observed IL-17A production in a large proportion of psoriatic plaque-derived CD8(+) T cells devoid of MAIT cell characteristics, likely representing conventional CD8(+) T cells. In conclusion, we provide supporting evidence that implicates Tc17 cells in the pathogenesis of psoriasis and describe the presence of innate CD8(+) MAIT cells in psoriatic lesions as an alternative source of IL-17A.
Collapse
Affiliation(s)
- Marcel B M Teunissen
- Department of Dermatology, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands.
| | - Nataliya G Yeremenko
- Department of Clinical Immunology and Rheumatology, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
| | - Dominique L P Baeten
- Department of Clinical Immunology and Rheumatology, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
| | - Saskia Chielie
- Department of Dermatology, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
| | - Phyllis I Spuls
- Department of Dermatology, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
| | - Menno A de Rie
- Department of Dermatology, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
| | - Olivier Lantz
- Institut Curie, Département de Biologie des Tumeurs, Paris, France
| | - Pieter C M Res
- Department of Dermatology, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
| |
Collapse
|
22
|
Allele-specific network reveals combinatorial interaction that transcends small effects in psoriasis GWAS. PLoS Comput Biol 2014; 10:e1003766. [PMID: 25233071 PMCID: PMC4168982 DOI: 10.1371/journal.pcbi.1003766] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2013] [Accepted: 05/20/2014] [Indexed: 12/20/2022] Open
Abstract
Hundreds of genetic markers have shown associations with various complex diseases, yet the “missing heritability” remains alarmingly elusive. Combinatorial interactions may account for a substantial portion of this missing heritability, but their discoveries have been impeded by computational complexity and genetic heterogeneity. We present BlocBuster, a novel systems-level approach that efficiently constructs genome-wide, allele-specific networks that accurately segregate homogenous combinations of genetic factors, tests the associations of these combinations with the given phenotype, and rigorously validates the results using a series of unbiased validation methods. BlocBuster employs a correlation measure that is customized for single nucleotide polymorphisms and returns a multi-faceted collection of values that captures genetic heterogeneity. We applied BlocBuster to analyze psoriasis, discovering a combinatorial pattern with an odds ratio of 3.64 and Bonferroni-corrected p-value of 5.01×10−16. This pattern was replicated in independent data, reflecting robustness of the method. In addition to improving prediction of disease susceptibility and broadening our understanding of the pathogenesis underlying psoriasis, these results demonstrate BlocBuster's potential for discovering combinatorial genetic associations within heterogeneous genome-wide data, thereby transcending the limiting “small effects” produced by individual markers examined in isolation. Most complex diseases arise due to combinations of genetic factors, yet current genome-wide association studies (GWAS) typically examine individual genetic markers in isolation because of the complexity of considering a prohibitively large number of marker combinations. Another complication for GWAS stems from genetic heterogeneity, in which different subsets of individuals develop a given disease due to different sets of genetic factors. We present BlocBuster, a network-based method that addresses these challenges and extracts inter-correlated genetic markers that manifest significant associations with complex diseases. Our analysis of psoriasis GWAS data revealed a significant combinatorial genetic pattern, which was validated using stringent computational tests and replication in independent data. This pattern is more significant than other previously identified markers. We also compared Pearson's correlation coefficient and observed that it introduced more type I errors and produced a less structured network than BlocBuster; the former also broke the combinatorial pattern into pieces. In addition to improving prediction of disease susceptibility and broadening our understanding of the pathogenesis underlying psoriasis, these results demonstrate BlocBuster's effectiveness for discovering combinatorial genetic associations within heterogeneous backgrounds, thereby transcending the limiting “small effects” produced by individual markers examined in isolation.
Collapse
|
23
|
Majorczyk E, Matusiak L, Nowak I, Pietkiewicz-Sworowska A, Luszczek W, Szepietowski JC, Kuśnierczyk P. A single nucleotide polymorphism -35 kb T>C (rs9264942) is strongly associated with psoriasis vulgaris depending on HLA-Cw(∗)06. Hum Immunol 2014; 75:504-7. [PMID: 24759677 DOI: 10.1016/j.humimm.2014.04.003] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2013] [Revised: 02/05/2014] [Accepted: 04/06/2014] [Indexed: 10/25/2022]
Abstract
HLA class I molecules play a role both in viral infection control and in autoimmune diseases development. rs9264942T>C polymorphism in HLA-C gene was found to impact on HLA-C surface expression level and to be associated with HIV-1 control. It was found that these HLA alleles which protect against AIDS are associated with autoimmune disease e.g. psoriasis vulgaris (PsV). Whether rs9264942 SNP is associated with PsV was investigated here. rs9264942T>C was genotyped in 292 PsV patients, and 254 controls using TaqMan Genotyping Assay. PsV patients differed from controls in frequencies of rs9264942T>C alleles (p=3.62 × 10(-16)) and genotypes (5.67 × 10(-15)). However, rs9264942C allele was predisposing to PsV 3-fold weaker than HLA-Cw(∗)06 (OR=5.04 vs. OR=15.61, respectively). In addition, this SNP was described earlier to be in strong linkage disequilibrium (LD) with another SNP, rs67384697 ins/del, which by affecting a microRNA binding is responsible for regulating HLA-C expression. However, typing for is cheaper and simpler than that for rs67384697, therefore we think it may substitute for it to some extent.
Collapse
Affiliation(s)
- Edyta Majorczyk
- Laboratory of Immunogenetics and Tissue Immunology, Ludwik Hirszfeld Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, ul. Rudolfa Weigla 12, 53-114 Wrocław, Poland; Chair of Biochemistry and Physiology, Institute of Physiotherapy, Faculty of Physical Education and Physiotherapy, Opole University of Technology, ul. Prószkowska 76, 45-758 Opole, Poland.
| | - Lukasz Matusiak
- Department of Dermatology, Venereology and Allergology, Wroclaw Medical University, ul. T. Chałubińskiego 1, 50-368 Wrocław, Poland
| | - Izabela Nowak
- Laboratory of Immunogenetics and Tissue Immunology, Ludwik Hirszfeld Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, ul. Rudolfa Weigla 12, 53-114 Wrocław, Poland
| | - Aneta Pietkiewicz-Sworowska
- Laboratory of Immunogenetics and Tissue Immunology, Ludwik Hirszfeld Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, ul. Rudolfa Weigla 12, 53-114 Wrocław, Poland
| | - Wioleta Luszczek
- Laboratory of Immunogenetics and Tissue Immunology, Ludwik Hirszfeld Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, ul. Rudolfa Weigla 12, 53-114 Wrocław, Poland
| | - Jacek C Szepietowski
- Department of Dermatology, Venereology and Allergology, Wroclaw Medical University, ul. T. Chałubińskiego 1, 50-368 Wrocław, Poland
| | - Piotr Kuśnierczyk
- Laboratory of Immunogenetics and Tissue Immunology, Ludwik Hirszfeld Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, ul. Rudolfa Weigla 12, 53-114 Wrocław, Poland.
| |
Collapse
|
24
|
Kaffenberger BH, Lee GL, Tyler K, Chan DV, Jarjour W, Ariza ME, Williams MV, Wong HK. Current and potential immune therapies and vaccines in the management of psoriasis. Hum Vaccin Immunother 2014; 10:876-86. [PMID: 24492530 DOI: 10.4161/hv.27532] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
Psoriasis is a chronic, immune skin disease associated with significant morbidity. Development of psoriasis is influenced by numerous genes, one allele is HLA-CW*0602. Other genes and single nucleotide polymorphisms affect immunologic pathways and antimicrobial peptide synthesis. Dendritic cells initiate psoriasis by activating T-cells toward a Th1 and Th17 response, with increased cytokines including TNF-α, IL-6, -12, -17, -22, and -23. IL-22 appears to promote keratinocyte dedifferentiation and increased antimicrobial peptide synthesis while TNF-α and IL-17 induce leukocyte localization within the psoriatic plaque. These recent insights identifying key cytokine pathways have led to the development of inhibitors with significant efficacy in the treatment of psoriasis. While a strategy for vaccine modulation of the immune response in psoriasis is in progress, with new technology they may provide a cost-effective long-term treatment that may induce tolerance or targeted self-inhibition for patients with autoimmune disorders, such as psoriasis.
Collapse
Affiliation(s)
- Benjamin H Kaffenberger
- Division of Dermatology; Department of Internal Medicine; Ohio State University Wexner Medical Center; Columbus, OH USA
| | - Grace L Lee
- Division of Dermatology; Department of Internal Medicine; Ohio State University Wexner Medical Center; Columbus, OH USA
| | - Kelly Tyler
- Division of Dermatology; Department of Internal Medicine; Ohio State University Wexner Medical Center; Columbus, OH USA
| | - Derek V Chan
- Division of Dermatology; Department of Internal Medicine; Ohio State University Wexner Medical Center; Columbus, OH USA
| | - Wael Jarjour
- Division of Rheumatology; Department of Internal Medicine; Ohio State University Wexner Medical Center; Columbus, OH USA
| | - Maria E Ariza
- Department of Medical Virology, Immunology, and Molecular Genetics; Ohio State University Wexner Medical Center; Columbus, OH USA
| | - Marshall V Williams
- Department of Medical Virology, Immunology, and Molecular Genetics; Ohio State University Wexner Medical Center; Columbus, OH USA
| | - Henry K Wong
- Division of Dermatology; Department of Internal Medicine; Ohio State University Wexner Medical Center; Columbus, OH USA
| |
Collapse
|
25
|
Abstract
Psoriasis is a chronic, inflammatory, immune-mediated skin condition with a prevalence of 0-11.8% across the world. It is associated with a number of cardiovascular, metabolic, and autoimmune disease co-morbidities. Psoriasis is a multifactorial disorder, influenced by both genetic and environmental factors. Its genetic basis has long been established through twin studies and familial clustering. The association of psoriasis with the HLA-Cw6 allele has been shown in many studies. Recent genome-wide association studies have identified a large number of other genes associated with psoriasis. Many of these genes regulate the innate and adaptive immune system. These findings indicate that a dysregulated immune system may play a major role in the pathogenesis of psoriasis. In this article, we review the clinical and genetic epidemiology of psoriasis with a brief description of the pathogenesis of disease.
Collapse
Affiliation(s)
- Rashmi Gupta
- University of California, San Francisco, Department of Dermatology, San Francisco, CA
| | - Maya G Debbaneh
- University of California, San Francisco, Department of Dermatology, San Francisco, CA ; University of California, Irvine, School of Medicine, Irvine, CA
| | - Wilson Liao
- University of California, San Francisco, Department of Dermatology, San Francisco, CA
| |
Collapse
|
26
|
|
27
|
Ammar M, Souissi-Bouchlaka C, Gati A, Zaraa I, Bouhaha R, Kouidhi S, Ben Ammar-Gaied A, Doss N, Mokni M, Marrakchi R. [Psoriasis: physiopathology and immunogenetics]. ACTA ACUST UNITED AC 2013; 62:10-23. [PMID: 24589075 DOI: 10.1016/j.patbio.2013.07.014] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2012] [Accepted: 07/05/2013] [Indexed: 01/17/2023]
Abstract
Psoriasis is a multifactorial disease that involves genetic, immunological and environmental factors. During the last decade, several studies by genome scan on families or cases/controls helped to highlight more than ten loci "PSORS" located on different chromosomes and containing several candidate genes. Psoriasis appears as a genetic disease that follows the mixed model with the involvement of a major gene (PSORS1) and a set of minor genes with a variable penetrance depending on the locus. Genetic data have focused on the involvement of the immune system in the pathogenesis of psoriasis. It is now accepted that psoriasis is an immunological disease involving the response profiles TH1 and TH17. Much remains to be done to better elucidate the mechanisms involved in the genesis of psoriatic lesions to find new therapeutic targets.
Collapse
Affiliation(s)
- M Ammar
- Laboratoire de génétique, d'immunologie et de pathologies humaines, faculté des sciences de Tunis, université El Manar II, 2092 Tunis, Tunisie.
| | - C Souissi-Bouchlaka
- Laboratoire de génétique, d'immunologie et de pathologies humaines, faculté des sciences de Tunis, université El Manar II, 2092 Tunis, Tunisie
| | - A Gati
- Laboratoire de génétique, d'immunologie et de pathologies humaines, faculté des sciences de Tunis, université El Manar II, 2092 Tunis, Tunisie
| | - I Zaraa
- Service de dermatologie, hôpital la Rabta, 1007 Tunis, Tunisie
| | - R Bouhaha
- Laboratoire de génétique, d'immunologie et de pathologies humaines, faculté des sciences de Tunis, université El Manar II, 2092 Tunis, Tunisie
| | - S Kouidhi
- Laboratoire de génétique, d'immunologie et de pathologies humaines, faculté des sciences de Tunis, université El Manar II, 2092 Tunis, Tunisie
| | - A Ben Ammar-Gaied
- Laboratoire de génétique, d'immunologie et de pathologies humaines, faculté des sciences de Tunis, université El Manar II, 2092 Tunis, Tunisie
| | - N Doss
- Service de dermatologie, hôpital militaire de Tunis, rue Raouth Ibnou Hatem, Tunis, Tunisie
| | - M Mokni
- Service de dermatologie, hôpital la Rabta, 1007 Tunis, Tunisie
| | - R Marrakchi
- Laboratoire de génétique, d'immunologie et de pathologies humaines, faculté des sciences de Tunis, université El Manar II, 2092 Tunis, Tunisie
| |
Collapse
|
28
|
Zhao Y, Hu L, Ma J, Xiao S, Zhao Y. Investigation of the association between psoriasis and human leucocyte antigens A by means of meta-analysis. J Eur Acad Dermatol Venereol 2013; 28:355-69. [DOI: 10.1111/jdv.12256] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2013] [Accepted: 07/25/2013] [Indexed: 01/28/2023]
Affiliation(s)
- Y.E. Zhao
- Department of Immunology and Pathogen Biology; Xi'an Jiaotong University College of Medicine; Xi'an Shaanxi China
| | - L. Hu
- Department of Immunology and Pathogen Biology; Xi'an Jiaotong University College of Medicine; Xi'an Shaanxi China
| | - J.X. Ma
- Department of Immunology and Pathogen Biology; Xi'an Jiaotong University College of Medicine; Xi'an Shaanxi China
| | - S.X. Xiao
- Department of Dermatology; Second Affiliated Hospital of Xi'an Jiaotong University College of Medicine; Xi'an Shaanxi China
| | - Y.L. Zhao
- Department of Epidemiology and Hygienic Statistics; Xi'an Jiaotong University College of Medicine; Xi'an Shaanxi China
| |
Collapse
|
29
|
An in-depth characterization of the major psoriasis susceptibility locus identifies candidate susceptibility alleles within an HLA-C enhancer element. PLoS One 2013; 8:e71690. [PMID: 23990973 PMCID: PMC3747202 DOI: 10.1371/journal.pone.0071690] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2013] [Accepted: 06/30/2013] [Indexed: 02/08/2023] Open
Abstract
Psoriasis is an immune-mediated skin disorder that is inherited as a complex genetic trait. Although genome-wide association scans (GWAS) have identified 36 disease susceptibility regions, more than 50% of the genetic variance can be attributed to a single Major Histocompatibility Complex (MHC) locus, known as PSORS1. Genetic studies indicate that HLA-C is the strongest PSORS1 candidate gene, since markers tagging HLA-Cw*0602 consistently generate the most significant association signals in GWAS. However, it is unclear whether HLA-Cw*0602 is itself the causal PSORS1 allele, especially as the role of SNPs that may affect its expression has not been investigated. Here, we have undertaken an in-depth molecular characterization of the PSORS1 interval, with a view to identifying regulatory variants that may contribute to disease susceptibility. By analysing high-density SNP data, we refined PSORS1 to a 179 kb region encompassing HLA-C and the neighbouring HCG27 pseudogene. We compared multiple MHC sequences spanning this refined locus and identified 144 candidate susceptibility variants, which are unique to chromosomes bearing HLA-Cw*0602. In parallel, we investigated the epigenetic profile of the critical PSORS1 interval and uncovered three enhancer elements likely to be active in T lymphocytes. Finally we showed that nine candidate susceptibility SNPs map within a HLA-C enhancer and that three of these variants co-localise with binding sites for immune-related transcription factors. These data indicate that SNPs affecting HLA-Cw*0602 expression are likely to contribute to psoriasis susceptibility and highlight the importance of integrating multiple experimental approaches in the investigation of complex genomic regions such as the MHC.
Collapse
|
30
|
Zhao Y, Ma J, Hu L, Xiao S, Zhao Y. Meta-analysis of the association between psoriasis and human leucocyte antigen-B. Br J Dermatol 2013; 169:417-27. [PMID: 23600465 DOI: 10.1111/bjd.12387] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/14/2013] [Indexed: 01/27/2023]
Affiliation(s)
- Y.E. Zhao
- Department of Immunology and Pathogen Biology; Xi'an Jiaotong University College of Medicine; No. 76 Yanta West Road Xi'an 710061 Shaanxi China
| | - J.X. Ma
- Department of Immunology and Pathogen Biology; Xi'an Jiaotong University College of Medicine; No. 76 Yanta West Road Xi'an 710061 Shaanxi China
| | - L. Hu
- Department of Immunology and Pathogen Biology; Xi'an Jiaotong University College of Medicine; No. 76 Yanta West Road Xi'an 710061 Shaanxi China
| | - S.X. Xiao
- Department of Dermatology; Second Affiliated Hospital of Xi'an Jiaotong University College of Medicine; No.157 Xiwu Road Xi'an 710004 Shaanxi China
| | - Y.L. Zhao
- Department of Epidemiology and Hygienic Statistics; Xi'an Jiaotong University College of Medicine; No. 76 Yanta West Road Xi'an 710061 Shaanxi China
| |
Collapse
|
31
|
Abstract
The treatment of psoriasis has been revolutionized since the introduction of biologic therapies. Prior to their introduction, it was unclear if psoriasis was primarily a keratinocyte signaling dysfunction or an autoimmune T-cell mediated pathway. Nonspecific T-cell targeting treatments had been used with some success, but they were limited by a narrow therapeutic index. The nonspecific nature of these agents was fraught with side effects, and the efficacy of these treatments pales in comparison to current treatments. The initial biologic molecules, alefacept and efalizumab, were not specific for any T-cell driven pathway, and neither are currently available in the USA. The successors to these early therapies have shown high efficacy and low side effects in psoriasis and other autoimmune diseases through the specific targeting of tumor necrosis factor-alpha (TNF-α). Since the initial use of antitumor necrosis factor agents, a renaissance in our understanding of psoriasis has been underway, leading to the elucidation of the T-helper 17 (Th17) from the Th1 pathway. With each new treatment, the pathogenesis for psoriasis continues to be more defined, allowing for improved targeted therapies and the ability to achieve new milestones in efficacy.
Collapse
Affiliation(s)
| | | | - Henry K Wong
- College of Medicine, Ohio State University, Columbus, OH, USA
| |
Collapse
|
32
|
Hundhausen C, Bertoni A, Mak RK, Botti E, Di Meglio P, Clop A, Laggner U, Chimenti S, Hayday AC, Barker JN, Trembath RC, Capon F, Nestle FO. Allele-specific cytokine responses at the HLA-C locus: implications for psoriasis. J Invest Dermatol 2012; 132:635-41. [PMID: 22113476 PMCID: PMC3620929 DOI: 10.1038/jid.2011.378] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Psoriasis is an inflammatory skin disorder that is inherited as a complex trait. Genetic studies have repeatedly highlighted HLA-C as the major determinant for psoriasis susceptibility, with the Cw*0602 allele conferring significant disease risk in a wide range of populations. Despite the potential importance of HLA-C variation in psoriasis, either via an effect on peptide presentation or immuno-inhibitory activity, allele-specific expression patterns have not been investigated. Here, we used reporter assays to characterize two regulatory variants, which virtually abolished the response to tumor necrosis factor (TNF)-α (rs2524094) and IFN-γ (rs10657191) in HLA-Cw*0602 and a cluster of related alleles. We validated these findings through the analysis of HLA-Cw*0602 expression in primary keratinocytes treated with TNF-α and IFN-γ. Finally, we showed that HLA-Cw*0602 transcripts are not increased in psoriatic skin lesions, despite highly elevated TNF-α levels. Thus, our findings demonstrate the presence of allele-specific differences in HLA-C expression and indicate that HLA-Cw*0602 is unresponsive to upregulation by key proinflammatory cytokines in psoriasis. These data pave the way for functional studies into the pathogenic role of the major psoriasis susceptibility allele.
Collapse
Affiliation(s)
| | - Anna Bertoni
- Division of Genetics and Molecular Medicine, King’s College London, London, UK
| | - Rose K Mak
- Division of Genetics and Molecular Medicine, King’s College London, London, UK
| | - Elisabetta Botti
- Division of Genetics and Molecular Medicine, King’s College London, London, UK
- Department of Dermatology, “Tor Vergata” University of Rome, Rome, Italy
| | - Paola Di Meglio
- Division of Genetics and Molecular Medicine, King’s College London, London, UK
| | - Alex Clop
- Division of Genetics and Molecular Medicine, King’s College London, London, UK
| | - Ute Laggner
- Division of Genetics and Molecular Medicine, King’s College London, London, UK
| | - Sergio Chimenti
- Department of Dermatology, “Tor Vergata” University of Rome, Rome, Italy
| | - Adrian C Hayday
- Division of Immunology, Infection and Inflammatory Disease, King’s College London, London, UK
- London Research Institute, Cancer Research UK
| | - Jonathan N Barker
- Division of Genetics and Molecular Medicine, King’s College London, London, UK
| | - Richard C Trembath
- Division of Genetics and Molecular Medicine, King’s College London, London, UK
| | - Francesca Capon
- Division of Genetics and Molecular Medicine, King’s College London, London, UK
| | - Frank O Nestle
- Division of Genetics and Molecular Medicine, King’s College London, London, UK
| |
Collapse
|
33
|
Capon F, Burden AD, Trembath RC, Barker JN. Psoriasis and other complex trait dermatoses: from Loci to functional pathways. J Invest Dermatol 2012; 132:915-22. [PMID: 22158561 PMCID: PMC3378482 DOI: 10.1038/jid.2011.395] [Citation(s) in RCA: 76] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Driven by advances in molecular genetic technologies and statistical analysis methodologies, there have been huge strides taken in dissecting the complex genetic basis of many inflammatory dermatoses. One example is psoriasis, for which application of classical linkage analysis and genome-wide association investigation has identified genetic loci of major and minor effect. Although most loci independently have modest genetic effects, they identify important biological pathways potentially relevant to disease pathogenesis and therapeutic intervention. In the case of psoriasis, these appear to involve the epidermal barrier, NF-κB mechanisms, and T helper type 17 adaptive immune responses. The advent of next-generation sequencing methods will permit a more detailed and complete map of disease genetic architecture, a key step in developing personalized medicine strategies in the clinical management of the complex inflammatory dermatoses.
Collapse
Affiliation(s)
- Francesca Capon
- Division of Genetics and Molecular Medicine, King's College London, London, UK
| | | | | | | |
Collapse
|
34
|
Abstract
Psoriasis is a common relapsing and remitting immune-mediated inflammatory disease that affects the skin and joints. This review focuses on current immunogenetic concepts, key cellular players, and axes of cytokines that are thought to contribute to disease pathogenesis. We highlight potential therapeutic targets and give an overview of the currently used immune-targeted therapies.
Collapse
Affiliation(s)
- Gayathri K Perera
- St. John's Institute of Dermatology, King's College London, London SE1 9RT, United Kingdom.
| | | | | |
Collapse
|
35
|
Khayrutdinov VR, Khairutdinov VR. Genetic profile of psoriasis patients. VESTNIK DERMATOLOGII I VENEROLOGII 2011. [DOI: 10.25208/vdv1027] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022] Open
Abstract
The article systematizes information about genetic polymorphisms associated with the risk of psoriasis and psoriatic
arthritis development. Gene variants that are potentially essential for their inclusion in genetic tests were sampled taking
into consideration polymorphism localization. The presented data are sufficient to prepare the genetic profile of psoriatic
patients, forecast the clinical course of the disease and potential efficacy of treatment, and calculate the risk of the
disease development in the patients relatives.
Collapse
|
36
|
Lee H, Wang B, Wu X, Zhang M. New single nucleotide polymorphisms were discovered during the psoriasis vulgaris case-control study of gene HLA-C in Shaanxi Chinese Han. TISSUE ANTIGENS 2011; 78:89-91. [PMID: 21623729 DOI: 10.1111/j.1399-0039.2011.01691.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
|
37
|
Mak RKH, Hundhausen C, Nestle FO. Progress in understanding the immunopathogenesis of psoriasis. ACTAS DERMO-SIFILIOGRAFICAS 2010; 100 Suppl 2:2-13. [PMID: 20096156 DOI: 10.1016/s0001-7310(09)73372-1] [Citation(s) in RCA: 73] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
This review emphasizes how translation from bench research to clinical knowledge and vice versa has resulted in considerable progress in understanding the immunopathogenesis of psoriasis. First, the journey in understanding the pathogenic mechanisms behind psoriasis is described. The roles of different components of the adaptive and innate immune systems involved in driving the inflammatory response are explained. Discovery of new immune pathways i.e. the IL23/Th17 axis and its subsequent impact on the development of novel biological therapies is highlighted. Identification of potential targets warranting further research for future therapeutic development are also discussed.
Collapse
Affiliation(s)
- R K H Mak
- St. John's Institute of Dermatology. King's College London School of Medicine. London, United Kingdom.
| | | | | |
Collapse
|
38
|
Li Y, Begovich AB. Unraveling the genetics of complex diseases: susceptibility genes for rheumatoid arthritis and psoriasis. Semin Immunol 2009; 21:318-27. [PMID: 19446472 DOI: 10.1016/j.smim.2009.04.002] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/16/2008] [Accepted: 04/09/2009] [Indexed: 12/29/2022]
Abstract
Talk of numerous genetic risk factors for rheumatoid arthritis (RA) and psoriasis has been percolating for years, but with the exception of the human leukocyte antigen (HLA) region, none have been definitively identified. Recently the results of multiple, well powered, genetic case-control studies have begun to appear providing convincing statistical evidence for at least ten non-HLA related risk genes or loci (C5/TRAF1, CD40, CTLA4, KIF5A/PIP4K2C, MMEL1/TNFRSF14, PADI4, PRKCQ, PTPN22, STAT4, and TNFAIP3/OLIG3) for RA and six (IL12B, IL13, IL23R, STAT2/IL23A, TNFAIP3, and TNIP1) for psoriasis. These initial, novel findings are beginning to shed light on the molecular pathways pertinent to the individual diseases and highlight the pleiotropic effects of several risk factors as well as the allelic heterogeneity underlying susceptibility to these and other autoimmune diseases.
Collapse
Affiliation(s)
- Yonghong Li
- Celera, 1401 Harbor Bay Parkway, Alameda, CA 94502, USA
| | | |
Collapse
|
39
|
Association analysis of the skin barrier gene cystatin A at the PSORS5 locus in psoriatic patients: evidence for interaction between PSORS1 and PSORS5. Eur J Hum Genet 2008; 16:1002-9. [DOI: 10.1038/ejhg.2008.40] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
|
40
|
Fan X, Yang S, Huang W, Wang ZM, Sun LD, Liang YH, Gao M, Ren YQ, Zhang KY, Du WH, Shen YJ, Liu JJ, Zhang XJ. Fine mapping of the psoriasis susceptibility locus PSORS1 supports HLA-C as the susceptibility gene in the Han Chinese population. PLoS Genet 2008; 4:e1000038. [PMID: 18369457 PMCID: PMC2265413 DOI: 10.1371/journal.pgen.1000038] [Citation(s) in RCA: 70] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2007] [Accepted: 02/25/2008] [Indexed: 12/20/2022] Open
Abstract
PSORS1 (psoriasis susceptibility gene 1) is a major susceptibility locus for psoriasis. Several fine-mapping studies have highlighted a 300-kb candidate region of PSORS1 where multiple biologically plausible candidate genes were suggested. The most recent study has indicated HLA-Cw6 as the primary PSORS1 risk allele within the candidate region in a Caucasian population. In this study, a family-based association analysis of the PSORS1 locus was performed by analyzing 10 polymorphic microsatellite markers from the PSORS1 region as well as HLA-B, HLA-C and CDSN loci in 163 Chinese families of psoriasis. Five marker loci show strong evidence (P<10(-3)), and one marker locus shows weak evidence (P = 0.04) for association. The haplotype cluster analysis showed that all the risk haplotypes are Cw6 positive and share a 369-kb region of homologous marker alleles which carries all the risk alleles, including HLA-Cw6 and CDSN*TTC, identified in this study. The recombinant haplotype analysis of the HLA-Cw6 and CDSN*TTC alleles in 228 Chinese families showed that the HLA-Cw6(-)/CDSN*TTC(+) recombinant haplotype is clearly not associated with risk for psoriasis (TratioNT = 29:57, p = 0.0025) in a Chinese population, suggesting that the CDSN*TTC allele itself does not confer risk without the presence of the HLA-Cw6 allele. The further exclusion analysis of the non-risk HLA-Cw6(-)/CDSN*TTC(+) recombinant haplotypes with common recombination breakpoints has allowed us to refine the location of PSORS1 to a small candidate region. Finally, we performed a conditional linkage analysis and showed that the HLA-Cw6 is a major risk allele but does not explain the full linkage evidence of the PSORS1 locus in a Chinese population. By performing a series of family-based association analyses of haplotypes as well as an exclusion analysis of recombinant haplotypes, we were able to refine the PSORS1 gene to a small critical region where HLA-C is a strong candidate to be the PSORS1 susceptibility gene.
Collapse
Affiliation(s)
- Xing Fan
- Institute of Dermatology and Department of Dermatology at No. 1 Hospital, Anhui Medical University, Hefei, Anhui, China
- The Key Laboratory of Gene Resource Utilization for Genetic Diseases, Ministry of Education, Hefei, Anhui, China
| | - Sen Yang
- Institute of Dermatology and Department of Dermatology at No. 1 Hospital, Anhui Medical University, Hefei, Anhui, China
- The Key Laboratory of Gene Resource Utilization for Genetic Diseases, Ministry of Education, Hefei, Anhui, China
| | - Wei Huang
- Chinese National Human Genome Center at Shanghai, Shanghai, China
| | - Zhi-Min Wang
- Chinese National Human Genome Center at Shanghai, Shanghai, China
| | - Liang-Dan Sun
- Institute of Dermatology and Department of Dermatology at No. 1 Hospital, Anhui Medical University, Hefei, Anhui, China
- The Key Laboratory of Gene Resource Utilization for Genetic Diseases, Ministry of Education, Hefei, Anhui, China
| | - Yan-Hua Liang
- Institute of Dermatology and Department of Dermatology at No. 1 Hospital, Anhui Medical University, Hefei, Anhui, China
- The Key Laboratory of Gene Resource Utilization for Genetic Diseases, Ministry of Education, Hefei, Anhui, China
| | - Min Gao
- Institute of Dermatology and Department of Dermatology at No. 1 Hospital, Anhui Medical University, Hefei, Anhui, China
- The Key Laboratory of Gene Resource Utilization for Genetic Diseases, Ministry of Education, Hefei, Anhui, China
| | - Yue-Qing Ren
- Institute of Dermatology and Department of Dermatology at No. 1 Hospital, Anhui Medical University, Hefei, Anhui, China
- The Key Laboratory of Gene Resource Utilization for Genetic Diseases, Ministry of Education, Hefei, Anhui, China
| | - Kai-Yue Zhang
- Chinese National Human Genome Center at Shanghai, Shanghai, China
| | - Wen-Hui Du
- Institute of Dermatology and Department of Dermatology at No. 1 Hospital, Anhui Medical University, Hefei, Anhui, China
- The Key Laboratory of Gene Resource Utilization for Genetic Diseases, Ministry of Education, Hefei, Anhui, China
| | - Yu-Jun Shen
- Institute of Dermatology and Department of Dermatology at No. 1 Hospital, Anhui Medical University, Hefei, Anhui, China
- The Key Laboratory of Gene Resource Utilization for Genetic Diseases, Ministry of Education, Hefei, Anhui, China
| | - Jian-Jun Liu
- Institute of Dermatology and Department of Dermatology at No. 1 Hospital, Anhui Medical University, Hefei, Anhui, China
- The Key Laboratory of Gene Resource Utilization for Genetic Diseases, Ministry of Education, Hefei, Anhui, China
- Genome Institute of Singapore, Singapore
- * E-mail: (J-JL); (X-JZ)
| | - Xue-Jun Zhang
- Institute of Dermatology and Department of Dermatology at No. 1 Hospital, Anhui Medical University, Hefei, Anhui, China
- The Key Laboratory of Gene Resource Utilization for Genetic Diseases, Ministry of Education, Hefei, Anhui, China
- * E-mail: (J-JL); (X-JZ)
| |
Collapse
|
41
|
Chang YT, Chou CT, Yu CW, Lin MW, Shiao YM, Chen CC, Huang CH, Lee DD, Liu HN, Wang WJ, Tsai SF. Cytokine gene polymorphisms in Chinese patients with psoriasis. Br J Dermatol 2007; 156:899-905. [PMID: 17388919 DOI: 10.1111/j.1365-2133.2007.07820.x] [Citation(s) in RCA: 49] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
BACKGROUND Previous studies have shown that cytokine gene polymorphisms may confer susceptibility to psoriasis. OBJECTIVES To determine whether genetic polymorphisms of the cytokine genes might influence the development of psoriasis in Chinese patients in Taiwan. METHODS DNA samples were obtained from 170 patients with psoriasis vulgaris (PV), 102 patients with psoriatic arthritis (PsA) and 210 control subjects. Using direct sequencing and microsatellite genotyping, we examined 28 polymorphisms in 11 cytokine genes including the interleukin (IL)-1alpha, IL-1beta, IL-1 receptor antagonist, IL-4, IL-8, IL-10, IL-12B, IL-13, tumour necrosis factor (TNF)-alpha, TNF-beta and interferon-gamma genes. Genotypes of HLA-Cw*0602, killer cell immunoglobulin-like receptor (KIR) genes and major histocompatibility complex class I chain-related gene A (MICA) were also determined in patients with PsA. RESULTS The patients with PV were more likely to carry the +4496G allele of the IL-12B gene (59.4% vs. 49.3%, P = 0.0067, P(c) = 0.033). However, no significantly different allelic and genotypic distributions of the other analysed genes including IL-1beta, TNF-alpha, TNF-beta, KIR genes and MICA were found between the PV/PsA patients and controls. Moreover, no association was observed with disease onset, gender, peripheral arthritis or joint erosion. With regards to HLA-Cw*0602, its allele frequency was significantly increased in patients with early-onset PV (25.3% vs. 4.8%, P < 10(-7)), but not in patients with PsA. CONCLUSIONS The IL-12B gene polymorphism conferred a risk for PV in our Chinese population, although the effect was more minor than that of HLA-Cw*0602. Cw*0602, KIR2DS1/S2 and MICA-A9 were unlikely to be risk alleles in our patients with PsA. The other analysed genetic polymorphisms of cytokine genes do not appear to be associated with susceptibility to PV and PsA in Chinese patients in Taiwan.
Collapse
Affiliation(s)
- Y T Chang
- Department of Dermatology, National Yang-Ming University, Taipei, Taiwan.
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
42
|
Chang YT, Chou CT, Shiao YM, Lin MW, Yu CW, Chen CC, Huang CH, Lee DD, Liu HN, Wang WJ, Tsai SF. Psoriasis vulgaris in Chinese individuals is associated withPSORS1C3andCDSNgenes. Br J Dermatol 2006; 155:663-9. [PMID: 16965413 DOI: 10.1111/j.1365-2133.2006.07420.x] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
BACKGROUND Besides the HLA-Cw*0602 allele, the psoriasis susceptibility 1 candidate 3 (PSORS1C3) and corneodesmosin (CDSN) genes are two probable psoriasis susceptibility genes in the PSORS1 locus. The -79C, -26C and +246A alleles of the PSORS1C3 gene, the CDSN*971T allele, CDSN*TTC (619T-1236T-1243C) and CDSN*5 (619T-1240G-1243C) are strongly associated with psoriasis in the caucasian population. Until now, no haplotype study of the PSORS1C3 and CDSN genes has been documented in Chinese patients with psoriasis vulgaris. OBJECTIVES We aimed to determine whether genetic polymorphisms of the PSORS1C3 and CDSN genes were associated with an increased risk of psoriasis vulgaris in Chinese patients in Taiwan. METHODS We investigated the PSORS1C3 and CDSN genes for disease association by direct sequencing in 178 patients with psoriasis vulgaris and 203 control subjects. Genotyping for HLA-Cw*0602, alpha-helix coiled-coil rod homologue (HCR) gene and single nucleotide polymorphism (SNP) n.9 was also carried out using a sequence-based typing method. RESULTS The PSORS1C3*582A allele, an SNP in the 3'-untranslated region of the PSORS1C3 gene, was a major psoriasis vulgaris susceptibility allele in the Chinese population, and the association was much stronger in patients with early-onset psoriasis vulgaris (22.3% vs. 6.9%, odds ratio = 3.87, P(c) =0.0000072). The frequencies of CDSN*TTC and CDSN*971T were also significantly increased in patients with early-onset psoriasis vulgaris. Moreover, PSORS1C3*582A, SNP n.9*C, Cw*0602 and HCR*WWCC were in near complete linkage disequilibrium (LD) with each other; in contrast, the LD with the CDSN gene was not so strong. SNP n.9*C-Cw*0602-PSORS1C3*582A-HCR*WWCC was a major susceptibility haplotype in patients with early-onset psoriasis vulgaris (P < 10(-7)) and this risk haplotype also carried CDSN*TTC and CDSN*971T. CONCLUSIONS The PSORS1C3 and CDSN genes are important psoriasis susceptibility genes in Chinese patients with psoriasis vulgaris.
Collapse
Affiliation(s)
- Y T Chang
- Department of Dermatology, National Yang-Ming University, Taipei, Taiwan.
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
43
|
Chang YT, Chou CT, Shiao YM, Lin MW, Yu CW, Chen CC, Huang CH, Lee DD, Liu HN, Wang WJ, Tsai SF. The killer cell immunoglobulin-like receptor genes do not confer susceptibility to psoriasis vulgaris independently in Chinese. J Invest Dermatol 2006; 126:2335-8. [PMID: 16741505 DOI: 10.1038/sj.jid.5700415] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
|
44
|
Nair RP, Stuart PE, Nistor I, Hiremagalore R, Chia NVC, Jenisch S, Weichenthal M, Abecasis GR, Lim HW, Christophers E, Voorhees JJ, Elder JT. Sequence and haplotype analysis supports HLA-C as the psoriasis susceptibility 1 gene. Am J Hum Genet 2006; 78:827-851. [PMID: 16642438 PMCID: PMC1474031 DOI: 10.1086/503821] [Citation(s) in RCA: 440] [Impact Index Per Article: 24.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2005] [Accepted: 03/02/2006] [Indexed: 01/15/2023] Open
Abstract
Previous studies have narrowed the interval containing PSORS1, the psoriasis-susceptibility locus in the major histocompatibility complex (MHC), to an approximately 300-kb region containing HLA-C and at least 10 other genes. In an effort to identify the PSORS1 gene, we cloned and completely sequenced this region from both chromosomes of five individuals. Two of the sequenced haplotypes were associated with psoriasis (risk), and the other eight were clearly unassociated (nonrisk). Comparison of sequence of the two risk haplotypes identified a 298-kb region of homology, extending from just telomeric of HLA-B to the HCG22 gene, which was flanked by clearly nonhomologous regions. Similar haplotypes cloned from unrelated individuals had nearly identical sequence. Combinatorial analysis of exonic variations in the known genes of the candidate interval revealed that HCG27, PSORS1C3, OTF3, TCF19, HCR, STG, and HCG22 bore no alleles unique to risk haplotypes among the 10 sequenced haplotypes. SPR1 and SEEK1 both had messenger RNA alleles specific to risk haplotypes, but only HLA-C and CDSN yielded protein alleles unique to risk. The risk alleles of HLA-C and CDSN (HLA-Cw6 and CDSN*TTC) were genotyped in 678 families with early-onset psoriasis; 620 of these families were also typed for 34 microsatellite markers spanning the PSORS1 interval. Recombinant haplotypes retaining HLA-Cw6 but lacking CDSN*TTC were significantly associated with psoriasis, whereas recombinants retaining CDSN*TTC but lacking HLA-Cw6 were not associated, despite good statistical power. By grouping recombinants with similar breakpoints, the most telomeric quarter of the 298-kb candidate interval could be excluded with high confidence. These results strongly suggest that HLA-Cw6 is the PSORS1 risk allele that confers susceptibility to early-onset psoriasis.
Collapse
Affiliation(s)
- Rajan P Nair
- Department of Dermatology, University of Michigan Medical School, Ann Arbor
| | - Philip E Stuart
- Department of Dermatology, University of Michigan Medical School, Ann Arbor
| | - Ioana Nistor
- Department of Dermatology, University of Michigan Medical School, Ann Arbor
| | - Ravi Hiremagalore
- Department of Dermatology, University of Michigan Medical School, Ann Arbor
| | - Nicholas V C Chia
- Department of Dermatology, University of Michigan Medical School, Ann Arbor
| | - Stefan Jenisch
- Department of Immunology, University of Kiel, Kiel, Germany
| | | | - Gonçalo R Abecasis
- Center for Statistical Genetics, Department of Biostatistics, School of Public Health, University of Michigan, Ann Arbor
| | - Henry W Lim
- Department of Dermatology, Henry Ford Hospital, Detroit
| | | | - John J Voorhees
- Department of Dermatology, University of Michigan Medical School, Ann Arbor
| | - James T Elder
- Department of Dermatology, University of Michigan Medical School, Ann Arbor; Department of Radiation Oncology (Cancer Biology), University of Michigan Medical School, Ann Arbor; Department of Dermatology, Ann Arbor Veterans Affairs Hospital, Ann Arbor.
| |
Collapse
|
45
|
Olsen AO, Grjibovski A, Magnus P, Tambs K, Harris JR. Psoriasis in Norway as observed in a population-based Norwegian twin panel. Br J Dermatol 2005; 153:346-51. [PMID: 16086747 DOI: 10.1111/j.1365-2133.2005.06613.x] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
BACKGROUND Psoriasis is a chronic T-cell-mediated immunological skin disease. The occurrence of the disease appears to differ with geography and ethnicity. There is a need for epidemiological data obtained from defined population-based studies, and the sex-specific differences observed in the natural history of the disease require more attention. OBJECTIVES To describe the occurrence and risk of psoriasis in Norway by age and sex. PATIENTS/METHODS A population-based health survey was conducted in 1998 in Norwegian twins aged 19-31 years. The present study is based upon the self-reported history of psoriasis among the 8045 questionnaire responders. RESULTS Altogether, 334 (4.2%) reported a positive history of psoriasis. There were no sex differences in the overall prevalence rates, but significantly higher point-prevalences emerged in females in the teenage-year intervals. A fairly linear increase in incidence rates by every 4-year age-interval peaked at a lower age in females. The mean age at onset was also significantly lower in females (14.8 years) than in males (17.3 years). The absolute risk of developing psoriasis appeared higher for females across the entire age range. However, by the age of 31 the cumulative risks were similar in females and males (0.056 and 0.053, respectively). CONCLUSIONS In this historical cohort of Norwegian twins, we find a high prevalence of psoriasis in congruence with previously reported data among whites in north-western Europe. We have found sex-specific characteristics in point-prevalences and incidence rates which may contribute to the understanding of the earlier age at onset of the disease in females.
Collapse
Affiliation(s)
- A O Olsen
- Department of Dermatology, Ullevaal University Hospital, University of Oslo, Norway.
| | | | | | | | | |
Collapse
|
46
|
Chang YT, Liu HN, Shiao YM, Lin MW, Lee DD, Liu MT, Wang WJ, Wu S, Lai CY, Tsai SF. A study of PSORS1C1 gene polymorphisms in Chinese patients with psoriasis. Br J Dermatol 2005; 153:90-6. [PMID: 16029332 DOI: 10.1111/j.1365-2133.2005.06570.x] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
BACKGROUND Although genetic analyses have identified the HLA-Cw*0602 allele as the major risk allele for chronic plaque psoriasis in various ethnic groups, it has been proposed that the association of Cw*0602 is due to linkage disequilibrium and that other nearby genes are involved in susceptibility to psoriasis. The psoriasis susceptibility 1 candidate 1 (PSORS1C1, formerly SEEK1) gene, located 127 kb telomeric to the HLA-C locus, is considered to be one of the potential candidate genes of psoriasis. Up to the present, no association study of the PSORS1C1 gene has been conducted on Chinese patients with psoriasis. OBJECTIVES We aimed to determine whether the genetic polymorphisms of the PSORS1C1 gene were associated with an increased risk of psoriasis in Chinese patients. METHODS We investigated the PSORS1C1 gene for disease association by direct sequencing of the PSORS1C1 gene in 143 Chinese patients with chronic plaque psoriasis and 188 control subjects. Genotyping for HLA-Cw*0602 and the alpha-helix coiled-coil rod homologue (C6orf18, formerly HCR) gene was also carried out using a sequence-based typing method. RESULTS We identified 10 single nucleotide polymorphisms (SNPs) on the PSORS1C1 gene in our subjects; four of these SNPs cause amino acid change. We also detected poly(C) repeat variants from nucleotide positions 386-392 (poly(C)6-8). The poly(C) repeat polymorphisms cause a frame shift mutation. Another poly(C) repeat variant was also found at nucleotide positions 748-751. No significantly different allelic distributions of the PSORS1C1 SNPs or poly(C) repeat polymorphisms could be found between the patients with chronic plaque psoriasis and controls after correction for multiple testing. However, a significant increase of the Cw*0602 allele and tryptophan-tryptophan allele of the C6orf18 gene (HCR*WW) was found in patients with early onset psoriasis (21.9% vs. 4.8%, P < 10(-7)). Haplotype-based association analysis also showed a susceptibility haplotype carrying Cw*0602 and HCR*WW alleles in early onset Chinese patients. CONCLUSIONS Our results indicate that the PSORS1C1 gene might not play an important role in the causation of chronic plaque psoriasis in Chinese people.
Collapse
Affiliation(s)
- Y T Chang
- Department of Dermatology, National Yang-Ming University, Taipei, Taiwan, Republic of China.
| | | | | | | | | | | | | | | | | | | |
Collapse
|
47
|
Ameen M, Allen MH, Fisher SA, Lewis CM, Cuthbert A, Kondeatis E, Vaughan RW, Murakami H, Nakagawa H, Barker JNWN. Corneodesmosin (CDSN) gene association with psoriasis vulgaris in Caucasian but not in Japanese populations. Clin Exp Dermatol 2005; 30:414-8. [PMID: 15953084 DOI: 10.1111/j.1365-2230.2005.01789.x] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
PSORS1 on chromosome 6p21.3, which contains the MHC, is a major susceptibility locus for psoriasis vulgaris. This region is characterized by strong linkage disequilibrium and contains the corneodesmosin (CSDN) gene, an attractive candidate for psoriasis susceptibility based on its putative biological function in keratinocyte adhesion, and HLA-Cw6, an established marker for psoriasis susceptibility. We compared two genetically independent populations in order to define the major psoriasis susceptibility gene, a British Caucasian population comprising parent-offspring trios analysed by the transmission disequilibrium test (TDT) and a Japanese case-control population. All individuals were investigated for CDSN polymorphism (+619, +1236, +1240 and +1243) and HLA-C association. Our data confirms strong association with HLA-Cw6 and CDSN allele 5 (+619T, +1240G, +1243C) in the Caucasian cohort (TDT, P = 5.4 x 10(-6)) and in addition defines this region further by identifying a high-risk CDSN haplotype (allele 5 and +1236T, P = 8.5 x 10(-8)). In contrast no association was observed in the Japanese cohort for any HLA-C or CDSN alleles. This data supports a role for the CDSN gene in Caucasian populations with psoriasis. However the lack of association with HLA-Cw6 and CDSN alleles in Japanese psoriasis patients may be because Japanese patients exhibit a form of psoriasis similar to late onset or Type II psoriasis vulgaris in contrast to early onset or Type I disease characterizing our Caucasian population.
Collapse
Affiliation(s)
- M Ameen
- St. John's Institute of Dermatology, Kings College, London, UK
| | | | | | | | | | | | | | | | | | | |
Collapse
|
48
|
Karason A, Gudjonsson JE, Jónsson HH, Hauksson VB, Runarsdottir EH, Stefansson K, Valdimarsson H, Gulcher JR. Genetics of Psoriasis in Iceland: Evidence for Linkage of Subphenotypes to Distinct Loci. J Invest Dermatol 2005; 124:1177-85. [PMID: 15955092 DOI: 10.1111/j.0022-202x.2005.23703.x] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Psoriasis is a chronic inflammatory skin disease with overlapping subphenotypes. It has a strong complex genetic component, but has been problematic to identifying significant loci. We evaluated 1000 patients with chronic plaque psoriasis and documented several subphenotypes. Here we report results of genome-wide linkage scans for psoriasis genes in 238 Icelandic families with 874 patients. MHC linkage was confirmed with LOD score of 10.9. When the entire cohort was analyzed, two other loci with LOD scores of 2.5 and 1.5 were observed on 16q and 4q, respectively. Stratification into subphenotypes revealed additional loci with LOD scores exceeding or approaching significance. A LOD score of 5.7 appeared on 16q in PsA patients with analysis conditioned on parental inheritance. A LOD score of 3.6 on 4q was detected when disease occurred at or older than 17 y, our median cohort age. This locus was defined by a marker near one reportedly displaying significant linkage in a Chinese psoriasis population and near suggestive linkage in a Caucasian population. A LOD of 3.0 was observed on 10q when disease onset occurred in the scalp. Furthermore, clinical stratification either revealed or increased LOD scores when compared to unstratified analysis and some coincided with previous reports.
Collapse
|
49
|
Abstract
Psoriasis is a complex inflammatory disorder whose pathogenesis is likely to require the contribution of several genes and environmental triggers. Despite the difficulties posed by the study of multifactorial conditions, significant progress has been achieved in relation to the molecular genetic basis of psoriasis. It has long been recognized that the major histocompatibility complex (MHC) region on chromosome 6p21 harbors the main determinant conferring psoriasis susceptibility. The identification of non-MHC susceptibility regions across the genome has been hindered by the likely occurrence of genetic heterogeneity. Nonetheless, evidence for the assignment of a number of non-MHC loci has been achieved through studies, including the collaborative analysis of large patient cohorts, and also through the observation of overlap between psoriasis and atopic dermatitis susceptibility regions.
Collapse
Affiliation(s)
- Francesca Capon
- Division of Medical Genetics, Department of Genetics and Cardiovascular Sciences, University of Leicester, Adrian Building, University Road, Leicester LE1 7RH, UK.
| | | | | |
Collapse
|
50
|
Capon F, Allen MH, Ameen M, Burden AD, Tillman D, Barker JN, Trembath RC. A synonymous SNP of the corneodesmosin gene leads to increased mRNA stability and demonstrates association with psoriasis across diverse ethnic groups. Hum Mol Genet 2004; 13:2361-8. [PMID: 15333584 DOI: 10.1093/hmg/ddh273] [Citation(s) in RCA: 215] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Psoriasis is a chronic skin disorder with multifactorial aetiology. Genome-wide scans have provided unambiguous evidence for a major disease susceptibility locus on chromosome 6p21 (PSORS1). A minimal PSORS1 interval has been defined which encompasses three genes (HLA-C, HCR and CDSN) carrying psoriasis-associated SNPs. On the basis of this genetic evidence, we have undertaken an assessment of CDSN allele functional impact. A comparison of CDSN intragenic haplotypes showed that SNPs exclusive to disease-associated chromosomes are located in regions implicated in the stabilization of RNA transcripts. As CDSN is over-expressed in psoriatic lesions, we hypothesised that disease-associated intragenic SNPs may alter the rate of its mRNA decay. Here, we demonstrate that mRNAs transcribed from a CDSN risk haplotype present a 2-fold increase in stability, compared with those transcribed from a neutral haplotype (t-test P=0.004). Site-directed mutagenesis revealed that a single synonymous SNP (CDSN*971T) accounts for the observed increase in RNA stability. CDSN*971T maps to a RNA stability motif and UV cross-linking analysis demonstrated that the SNP affects the transcript affinity for a 39 kDa RNA binding protein. Association analyses show that haplotypes bearing CDSN*971T confer psoriasis susceptibility in a wide range of ethnic groups. These results demonstrate the effect of synonymous variation upon allele specific gene expression, a finding of relevance to future studies of the pathogenesis of common and complex traits.
Collapse
Affiliation(s)
- Francesca Capon
- Department of Genetics, University of Leicester, Leicester LE1 7RH, UK
| | | | | | | | | | | | | |
Collapse
|