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Sieminska I, Pieniawska M, Grzywa TM. The Immunology of Psoriasis-Current Concepts in Pathogenesis. Clin Rev Allergy Immunol 2024; 66:164-191. [PMID: 38642273 PMCID: PMC11193704 DOI: 10.1007/s12016-024-08991-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/01/2024] [Indexed: 04/22/2024]
Abstract
Psoriasis is one of the most common inflammatory skin diseases with a chronic, relapsing-remitting course. The last decades of intense research uncovered a pathological network of interactions between immune cells and other types of cells in the pathogenesis of psoriasis. Emerging evidence indicates that dendritic cells, TH17 cells, and keratinocytes constitute a pathogenic triad in psoriasis. Dendritic cells produce TNF-α and IL-23 to promote T cell differentiation toward TH17 cells that produce key psoriatic cytokines IL-17, IFN-γ, and IL-22. Their activity results in skin inflammation and activation and hyperproliferation of keratinocytes. In addition, other cells and signaling pathways are implicated in the pathogenesis of psoriasis, including TH9 cells, TH22 cells, CD8+ cytotoxic cells, neutrophils, γδ T cells, and cytokines and chemokines secreted by them. New insights from high-throughput analysis of lesional skin identified novel signaling pathways and cell populations involved in the pathogenesis. These studies not only expanded our knowledge about the mechanisms of immune response and the pathogenesis of psoriasis but also resulted in a revolution in the clinical management of patients with psoriasis. Thus, understanding the mechanisms of immune response in psoriatic inflammation is crucial for further studies, the development of novel therapeutic strategies, and the clinical management of psoriasis patients. The aim of the review was to comprehensively present the dysregulation of immune response in psoriasis with an emphasis on recent findings. Here, we described the role of immune cells, including T cells, B cells, dendritic cells, neutrophils, monocytes, mast cells, and innate lymphoid cells (ILCs), as well as non-immune cells, including keratinocytes, fibroblasts, endothelial cells, and platelets in the initiation, development, and progression of psoriasis.
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Affiliation(s)
- Izabela Sieminska
- University Centre of Veterinary Medicine, University of Agriculture in Krakow, Krakow, Poland
| | - Monika Pieniawska
- Institute of Human Genetics, Polish Academy of Sciences, Poznań, Poland
| | - Tomasz M Grzywa
- Laboratory of Immunology, Mossakowski Medical Research Institute, Polish Academy of Sciences, Warsaw, Poland.
- Department of Methodology, Medical University of Warsaw, Warsaw, Poland.
- The Raymond G. Perelman Center for Cellular and Molecular Therapeutics, Department of Pathology and Laboratory Medicine, Children's Hospital of Philadelphia, Philadelphia, USA.
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2
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Lobão B, Lourenço D, Giga A, Mendes-Bastos P. From PsO to PsA: the role of T RM and Tregs in psoriatic disease, a systematic review of the literature. Front Med (Lausanne) 2024; 11:1346757. [PMID: 38405187 PMCID: PMC10884248 DOI: 10.3389/fmed.2024.1346757] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2023] [Accepted: 01/25/2024] [Indexed: 02/27/2024] Open
Abstract
Introduction Psoriasis (PsO) is a chronic skin condition driven by immune mediators like TNFα, INFγ, IL-17, and IL-23. Psoriatic arthritis (PsA) can develop in PsO patients. Although psoriatic lesions may apparently resolve with therapy, subclinical cutaneous inflammation may persist. The role of tissue-resident memory T-cells (TRM), and regulatory T cells (Tregs) that also contribute to chronic inflammation are being explored in this context. This systematic review explores TRM and Tregs in psoriatic disease (PsD) and its progression. Methods A systematic review, following Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines, was performed using Pubmed® and Web of Science™ databases on June 3rd 2023, using patient/population, intervention, comparison, and outcomes (PICO) criteria limited to the English language. Results A total of 62 reports were identified and included. In PsO, chronic inflammation is driven by cytokines including IL-17 and IL-23, and cellular mediators such as CD8+ and CD4+ T cells. TRM contributes to local inflammation, while Tregs may be dysfunctional in psoriatic skin lesions. Secukinumab and guselkumab, which target IL-17A and the IL-23p19 subunit, respectively, have different effects on CD8+ TRM and Tregs during PsO treatment. Inhibition of IL-23 may provide better long-term results due to its impact on the Treg to CD8+ TRM ratio. IL-23 may contribute to inflammation persisting even after treatment. In PsA, subclinical enthesitis is perceived as an early occurence, and Th17 cells are involved in this pathogenic process. Recent EULAR guidelines highlight the importance of early diagnosis and treatment to intercept PsA. In PsA, CD8+ TRM cells are present in synovial fluid and Tregs are reduced in peripheral blood. The progression from PsO to PsA is marked by a shift in immune profiles, with specific T-cells subsets playing key roles in perpetuating inflammation. Early intervention targeting TRM cells may hold promising, but clinical studies are limited. Ongoing studies such as IVEPSA and PAMPA aim to improve our knowledge regarding PsA interception in high-risk PsO patients, emphasizing the need for further research in this area. Conclusion Early intervention is crucial for PsO patients at high risk of PsA; T cells, particularly type 17 helper T cells, and CD8+ cells are key in the progression from PsO-to-PsA. Early targeting of TRM in PsD shows promise but more research is needed.
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Affiliation(s)
- Bárbara Lobão
- Instituto Português de Reumatologia, Lisboa, Portugal
- Centro Hospitalar de Setúbal, Setúbal, Portugal
| | | | - Ana Giga
- Janssen Portugal, Oeiras, Portugal
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Chen Y, Liu H, Yan Y, Chen H, Ye S, Qiu F, Liang CL, Zhang Q, Zheng F, Han L, Lu C, Dai Z. Methotrexate and electrostimulation cooperate to alleviate the relapse of psoriasiform skin inflammation by suppressing memory T cells. Biochem Pharmacol 2024; 219:115979. [PMID: 38081367 DOI: 10.1016/j.bcp.2023.115979] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2023] [Revised: 11/24/2023] [Accepted: 12/08/2023] [Indexed: 12/26/2023]
Abstract
Methotrexate (MTX) is an immunosuppressant used to treat autoimmune diseases, including psoriasis. However, like other immunosuppressants, MTX alone does not prevent their recurrence. Electrostimulation (ES) has been utilized to treat some inflammatory disorders without any major side-effect. But it remains unknown if ES alone, or together with MTX, ameliorates autoimmune disease relapse: a sticky medical problem. In particular, the mechanisms underlying ES action remain unclear. The objective of this study was to determine an impact of ES and/or MTX on psoriasis relapse and their potential cooperation. We found that regional ES, but not MTX, ameliorated psoriasiform skin inflammation recurrence. Interestingly, treatment with both MTX and ES further prevented psoriasis recurrence compared to ES alone. Moreover, ES downregulated potassium channel Kv1.3 on T-cells and reduced CD4+/CD8+ effector memory (TEM) and CD8+ skin-resident memory T (TRM) cells, while ES plus MTX further decreased CD8+ TEM/TRM cells compared to ES alone. However, ES failed to further attenuate psoriasis recurrence or suppress T cell memory in Kv1.3-deficient mice, whereas lack of Kv1.3 itself ameliorated psoriasis relapse by shrinking T cell memory pool. Importantly, ES moderately inhibited T-cell proliferation in vitro. ES also reduced human CD8+ TRM cells and attenuated human skin lesions in humanized mice grafted with lesional skin from patients with recurrent psoriasis, with an enhanced efficacy in mice treated with both ES and MTX. Thus, ES and MTX cooperated to prevent psoriasis relapse by reducing T-cell memory via targeting potassium channel Kv1.3. Our studies may be implicated for treating human psoriasis.
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Affiliation(s)
- Yuchao Chen
- State Key Laboratory of Dampness Syndrome of Chinese Medicine, the Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, Guangdong 510006, China; Section of Immunology, the Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, Guangdong 510006, China; Joint Immunology Program, Guangdong Provincial Academy of Chinese Medical Sciences, Guangzhou, Guangdong 510006, China
| | - Huazhen Liu
- State Key Laboratory of Dampness Syndrome of Chinese Medicine, the Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, Guangdong 510006, China; Section of Immunology, the Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, Guangdong 510006, China; Joint Immunology Program, Guangdong Provincial Academy of Chinese Medical Sciences, Guangzhou, Guangdong 510006, China
| | - Yuhong Yan
- State Key Laboratory of Dampness Syndrome of Chinese Medicine, the Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, Guangdong 510006, China; Section of Immunology, the Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, Guangdong 510006, China
| | - Haiming Chen
- State Key Laboratory of Dampness Syndrome of Chinese Medicine, the Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, Guangdong 510006, China; Section of Immunology, the Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, Guangdong 510006, China
| | - Shuyan Ye
- State Key Laboratory of Dampness Syndrome of Chinese Medicine, the Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, Guangdong 510006, China; Section of Immunology, the Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, Guangdong 510006, China
| | - Feifei Qiu
- Section of Immunology, the Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, Guangdong 510006, China
| | - Chun-Ling Liang
- State Key Laboratory of Dampness Syndrome of Chinese Medicine, the Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, Guangdong 510006, China; Section of Immunology, the Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, Guangdong 510006, China
| | - Qunfang Zhang
- Section of Immunology, the Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, Guangdong 510006, China
| | - Fang Zheng
- Section of Immunology, the Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, Guangdong 510006, China
| | - Ling Han
- State Key Laboratory of Dampness Syndrome of Chinese Medicine, the Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, Guangdong 510006, China; Section of Immunology, the Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, Guangdong 510006, China
| | - Chuanjian Lu
- State Key Laboratory of Dampness Syndrome of Chinese Medicine, the Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, Guangdong 510006, China; Section of Immunology, the Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, Guangdong 510006, China; Joint Immunology Program, Guangdong Provincial Academy of Chinese Medical Sciences, Guangzhou, Guangdong 510006, China.
| | - Zhenhua Dai
- State Key Laboratory of Dampness Syndrome of Chinese Medicine, the Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, Guangdong 510006, China; Section of Immunology, the Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, Guangdong 510006, China; Joint Immunology Program, Guangdong Provincial Academy of Chinese Medical Sciences, Guangzhou, Guangdong 510006, China.
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Bao N, Fu B, Zhong X, Jia S, Ren Z, Wang H, Wang W, Shi H, Li J, Ge F, Chang Q, Gong Y, Liu W, Qiu F, Xu S, Li T. Role of the CXCR6/CXCL16 axis in autoimmune diseases. Int Immunopharmacol 2023; 121:110530. [PMID: 37348231 DOI: 10.1016/j.intimp.2023.110530] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2023] [Revised: 06/01/2023] [Accepted: 06/15/2023] [Indexed: 06/24/2023]
Abstract
The C-X-C motif ligand 16, or CXCL16, is a chemokine that belongs to the ELR - CXC subfamily. Its function is to bind to the chemokine receptor CXCR6, which is a G protein-coupled receptor with 7 transmembrane domains. The CXCR6/CXCL16 axis has been linked to the development of numerous autoimmune diseases and is connected to clinical parameters that reflect disease severity, activity, and prognosis in conditions such as multiple sclerosis, autoimmune hepatitis, rheumatoid arthritis, Crohn's disease, and psoriasis. CXCL16 is expressed in various immune cells, such as dendritic cells, monocytes, macrophages, and B cells. During autoimmune diseases, CXCL16 can facilitate the adhesion of immune cells like monocytes, T cells, NKT cells, and others to endothelial cells and dendritic cells. Additionally, sCXCL16 can regulate the migration of CXCR6-expressing leukocytes, which includes CD8+ T cells, CD4+ T cells, NK cells, constant natural killer T cells, plasma cells, and monocytes. Further investigation is required to comprehend the intricate interactions between chemokines and the pathogenesis of autoimmune diseases. It remains to be seen whether the CXCR6/CXCL16 axis represents a new target for the treatment of these conditions.
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Affiliation(s)
- Nandi Bao
- Senior Department of Cardiology, The Sixth Medical Center, Chinese PLA General Hospital, Beijing, China
| | - Bo Fu
- Department of Nephrology, First Medical Center of Chinese PLA General Hospital, Beijing, China; State Key Laboratory of Kidney Diseases, Chinese PLA General Hospital, Beijing, China
| | - Xiaoling Zhong
- Department of neurology, School of Medicine, South China University of Technology, Guangzhou, China; Department of neurology, The Sixth Medical Center of PLA General Hospital of Beijing, Beijing, China
| | - Shuangshuang Jia
- Department of neurology, The Sixth Medical Center of PLA General Hospital of Beijing, Beijing, China; Navy Clinical College, the Fifth School of Clinical Medicine, Anhui Medical University, Hefei, China
| | - Zhuangzhuang Ren
- Navy Clinical College, the Fifth School of Clinical Medicine, Anhui Medical University, Hefei, China
| | - Haoran Wang
- Department of Nephrology, First Medical Center of Chinese PLA General Hospital, Beijing, China; State Key Laboratory of Kidney Diseases, Chinese PLA General Hospital, Beijing, China
| | - Weihua Wang
- Department of Gastroenterology, The Second Medical Center, Chinese PLA General Hospital, Beijing, China; National Clinical Research Center for Geriatric Diseases, Chinese PLA General Hospital, Beijing, China
| | - Hui Shi
- Department of Gastroenterology, The Second Medical Center, Chinese PLA General Hospital, Beijing, China; National Clinical Research Center for Geriatric Diseases, Chinese PLA General Hospital, Beijing, China
| | - Jun Li
- Department of Gastroenterology, The Second Medical Center, Chinese PLA General Hospital, Beijing, China; National Clinical Research Center for Geriatric Diseases, Chinese PLA General Hospital, Beijing, China
| | - Fulin Ge
- Department of Gastroenterology, The Second Medical Center, Chinese PLA General Hospital, Beijing, China; National Clinical Research Center for Geriatric Diseases, Chinese PLA General Hospital, Beijing, China
| | - Qing Chang
- Department of Gastroenterology, The Second Medical Center, Chinese PLA General Hospital, Beijing, China; National Clinical Research Center for Geriatric Diseases, Chinese PLA General Hospital, Beijing, China
| | - Yuan Gong
- Department of Gastroenterology, The Second Medical Center, Chinese PLA General Hospital, Beijing, China; National Clinical Research Center for Geriatric Diseases, Chinese PLA General Hospital, Beijing, China
| | - Wenhui Liu
- Department of Gastroenterology, The Second Medical Center, Chinese PLA General Hospital, Beijing, China; National Clinical Research Center for Geriatric Diseases, Chinese PLA General Hospital, Beijing, China
| | - Feng Qiu
- Senior Department of Neurology, The First Medical Center of PLA General Hospital, Beijing, China.
| | - Shiping Xu
- Department of Gastroenterology, The Second Medical Center, Chinese PLA General Hospital, Beijing, China; National Clinical Research Center for Geriatric Diseases, Chinese PLA General Hospital, Beijing, China.
| | - Tingting Li
- State Key Laboratory of Kidney Diseases, Chinese PLA General Hospital, Beijing, China; Department of Gastroenterology, The Second Medical Center, Chinese PLA General Hospital, Beijing, China; National Clinical Research Center for Geriatric Diseases, Chinese PLA General Hospital, Beijing, China.
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Chimbetete T, Buck C, Choshi P, Selim R, Pedretti S, Divito SJ, Phillips EJ, Lehloenya R, Peter J. HIV-Associated Immune Dysregulation in the Skin: A Crucible for Exaggerated Inflammation and Hypersensitivity. J Invest Dermatol 2023; 143:362-373. [PMID: 36549954 PMCID: PMC9974923 DOI: 10.1016/j.jid.2022.07.035] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2022] [Revised: 07/22/2022] [Accepted: 07/25/2022] [Indexed: 12/24/2022]
Abstract
Skin diseases are hallmarks of progressive HIV-related immunosuppression, with severe noninfectious inflammatory and hypersensitivity conditions as common as opportunistic infections. Conditions such as papular pruritic eruption are AIDS defining, whereas delayed immune-mediated adverse reactions, mostly cutaneous, occur up to 100-fold more during HIV infection. The skin, constantly in contact with the external environment, has a complex immunity. A dense, tightly junctioned barrier with basal keratinocytes and epidermal Langerhans cells with antimicrobial, innate-activating, and antigen-presenting functions form the frontline. Resident dermal dendritic, mast, macrophage, and innate lymphoid cells play pivotal roles in directing and polarizing appropriate adaptive immune responses and directing effector immune cell trafficking. Sustained viral replication leads to progressive declines in CD4 T cells, whereas Langerhans and dermal dendritic cells serve as viral reservoirs and points of first viral contact in the mucosa. Cutaneous cytokine responses and diminished lymphoid populations create a crucible for exaggerated inflammation and hypersensitivity. However, beyond histopathological description, these manifestations are poorly characterized. This review details normal skin immunology, changes associated with progressive HIV-related immunosuppression, and the characteristic conditions of immune dysregulation increased with HIV. We highlight the main research gaps and several novel tissue-directed strategies to define mechanisms that will provide targeted approaches to prevention or treatment.
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Affiliation(s)
- Tafadzwa Chimbetete
- Division of Allergology and Clinical Immunology, Department of Medicine, Groote Schuur Hospital, University of Cape Town, Cape Town, South Africa
| | - Chloe Buck
- Division of Allergology and Clinical Immunology, Department of Medicine, Groote Schuur Hospital, University of Cape Town, Cape Town, South Africa
| | - Phuti Choshi
- Division of Allergology and Clinical Immunology, Department of Medicine, Groote Schuur Hospital, University of Cape Town, Cape Town, South Africa
| | - Rose Selim
- Division of Allergology and Clinical Immunology, Department of Medicine, Groote Schuur Hospital, University of Cape Town, Cape Town, South Africa
| | - Sarah Pedretti
- Allergy and Immunology Unit, University of Cape Town Lung Institute, Cape Town, South Africa
| | - Sherrie Jill Divito
- Department of Dermatology, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | | | - Rannakoe Lehloenya
- Division of Dermatology, Department of Medicine, Groote Schuur Hospital, University of Cape Town, Cape Town, South Africa; Combined Drug Allergy Clinic, Groote Schuur Hospital, Cape Town, South Africa
| | - Jonny Peter
- Division of Allergology and Clinical Immunology, Department of Medicine, Groote Schuur Hospital, University of Cape Town, Cape Town, South Africa; Allergy and Immunology Unit, University of Cape Town Lung Institute, Cape Town, South Africa; Combined Drug Allergy Clinic, Groote Schuur Hospital, Cape Town, South Africa.
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Are There Signs of Enthesitis in Nail Psoriasis? An Immunohistological Study of Nail Psoriasis With and Without Psoriatic Arthritis. Am J Dermatopathol 2023; 45:40-46. [PMID: 36484605 DOI: 10.1097/dad.0000000000002328] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
ABSTRACT The concept of nail psoriasis as an entheseal-driven disease has essentially been formulated on the basis of radiological findings because it is usually not possible to obtain the tissue directly from the joints. The aim of this retrospective study was to evaluate the histological features of isolated nail psoriasis with and without distal interphalangeal psoriatic arthritis (PsA), focusing on the question as to whether the fascia and adipose tissue surrounding the apex of the nail unit genuinely show an inflammatory infiltrate. In support of the nail-enthesitis theory, an ongoing inflammatory infiltrate could be expected. An immunohistochemical study was performed to evaluate the distribution and phenotype of the inflammatory infiltrate in nail psoriasis with and without PsA. This study did not show an inflammatory infiltrate in the fascia connecting the nail to the extensor tendon. CD8 and CD4 subsets were present in equal number in the nail dermis of nail psoriasis with or without PsA, which is a similar distribution to that seen in psoriatic synovium while skin psoriasis is characterized by a dermal predominance of CD4 T lymphocytes. Because of this study and recent microanatomic studies of the normal nail unit, it is possible to move away from a purely anatomic explanation of the strong association between nail psoriasis and PsA and to propose immunological factors as contributory. This study provides support for the hypothesis that CD8+ T cells play a crucial role in the pathogenesis of nail psoriasis through a pathogenic pathway similar to that of PsA and contrasting with that of the skin.
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Alesci A, Lauriano ER, Fumia A, Irrera N, Mastrantonio E, Vaccaro M, Gangemi S, Santini A, Cicero N, Pergolizzi S. Relationship between Immune Cells, Depression, Stress, and Psoriasis: Could the Use of Natural Products Be Helpful? MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27061953. [PMID: 35335319 PMCID: PMC8954591 DOI: 10.3390/molecules27061953] [Citation(s) in RCA: 28] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/19/2022] [Revised: 03/12/2022] [Accepted: 03/15/2022] [Indexed: 12/13/2022]
Abstract
Psoriasis is one of the most widespread chronic inflammatory skin diseases, affecting about 2%-3% of the worldwide adult population. The pathogenesis of this disease is quite complex, but an interaction between genetic and environmental factors has been recognized with an essential modulation of inflammatory and immune responses in affected patients. Psoriatic plaques generally represent the clinical psoriatic feature resulting from an abnormal proliferation and differentiation of keratinocytes, which cause dermal hyperplasia, skin infiltration of immune cells, and increased capillarity. Some scientific pieces of evidence have reported that psychological stress may play a key role in psoriasis, and the disease itself may cause stress conditions in patients, thus reproducing a vicious cycle. The present review aims at examining immune cell involvement in psoriasis and the relationship of depression and stress in its pathogenesis and development. In addition, this review contains a focus on the possible use of natural products, thus pointing out their mechanism of action in order to counteract clinical and psychological symptoms.
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Affiliation(s)
- Alessio Alesci
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Viale Stagno d’Alcontres, 31, 98166 Messina, Italy; (E.R.L.); (S.P.)
- Correspondence: (A.A.); (A.S.); (N.C.)
| | - Eugenia Rita Lauriano
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Viale Stagno d’Alcontres, 31, 98166 Messina, Italy; (E.R.L.); (S.P.)
| | - Angelo Fumia
- Department of Clinical and Experimental Medicine, University of Messina, Viale Gazzi, 98147 Messina, Italy; (A.F.); (S.G.)
| | - Natasha Irrera
- Department of Clinical and Experimental Medicine—Section of Pharmacology, University of Messina, 98125 Messina, Italy;
| | | | - Mario Vaccaro
- Department of Clinical and Experimental Medicine—Section of Dermatology, University of Messina, 98125 Messina, Italy;
| | - Sebastiano Gangemi
- Department of Clinical and Experimental Medicine, University of Messina, Viale Gazzi, 98147 Messina, Italy; (A.F.); (S.G.)
| | - Antonello Santini
- Department of Pharmacy, University of Napoli Federico II, 80131 Napoli, Italy
- Correspondence: (A.A.); (A.S.); (N.C.)
| | - Nicola Cicero
- Department of Biomedical and Dental Science and Morphofunctional Imaging, University of Messina, 98125 Messina, Italy
- Correspondence: (A.A.); (A.S.); (N.C.)
| | - Simona Pergolizzi
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Viale Stagno d’Alcontres, 31, 98166 Messina, Italy; (E.R.L.); (S.P.)
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Sato Y, Ogawa E, Okuyama R. Role of Innate Immune Cells in Psoriasis. Int J Mol Sci 2020; 21:ijms21186604. [PMID: 32917058 PMCID: PMC7554918 DOI: 10.3390/ijms21186604] [Citation(s) in RCA: 43] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2020] [Revised: 09/08/2020] [Accepted: 09/08/2020] [Indexed: 12/13/2022] Open
Abstract
Psoriasis is a chronic inflammatory skin condition caused by a combination of hereditary and environmental factors. Its development is closely related to the adaptive immune response. T helper 17 cells are major IL-17-producing cells, a function that plays an important role in the pathogenesis of psoriasis. However, recent findings have demonstrated that innate immune cells also contribute to the development of psoriasis. Innate lymphoid cells, γδ T cells, natural killer T cells, and natural killer cells are activated in psoriasis, contributing to disease pathology through IL-17-dependent and -independent mechanisms. The present review provides an overview of recent findings, demonstrating a role for innate immunity in psoriasis.
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Affiliation(s)
| | | | - Ryuhei Okuyama
- Correspondence: ; Tel.: +81-263-37-2645; Fax: +81-263-37-2646
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Sernicola A, Russo I, Silic-Benussi M, Ciminale V, Alaibac M. Targeting the cutaneous lymphocyte antigen (CLA) in inflammatory and neoplastic skin conditions. Expert Opin Biol Ther 2020; 20:275-282. [PMID: 31951753 DOI: 10.1080/14712598.2020.1715937] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Introduction: The cutaneous lymphocyte antigen interacts with E-selectin on endothelial cells and is expressed on 15% of circulating T-cells. Skin-homing T-cells express the cutaneous lymphocyte antigen and play a role in local cutaneous immunity in inflammatory reactions and neoplastic conditions.Areas covered: Lymphocyte extravasation is the essential para-physiological mechanism enabling immune surveillance of tissues for tumors as well as effector cell recruitment to inflammatory sites.The authors focused on skin inflammatory disorders, on cutaneous lymphoproliferative disease, and on other skin malignancies.Expert opinion: Interfering with leukocyte extravasation has been regarded as an attractive strategy in skin disorders, in the past for inflammatory conditions and more recently for cutaneous T-cell lymphomas. Therapeutic blocking of skin-homing interactions has been attempted in psoriasis and atopic dermatitis and has been achieved in the treatment of cutaneous T-cell lymphomas. Cutaneous lymphocyte antigen is a potential molecular target for both systemic and skin-directed therapy for cutaneous T-cell lymphomas.
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Affiliation(s)
| | - Irene Russo
- Unit of Dermatology, University of Padua, Padova, Italy
| | - Micol Silic-Benussi
- Department of Clinical and Experimental Oncology, Veneto Institute of Oncology IOV - IRCCS, Padova, Italy
| | - Vincenzo Ciminale
- Department of Clinical and Experimental Oncology, Veneto Institute of Oncology IOV - IRCCS, Padova, Italy
| | - Mauro Alaibac
- Unit of Dermatology, University of Padua, Padova, Italy
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Abstract
Psoriasis is a prevalent systemic immune-mediated disease with cutaneous manifestations. In HIV-infected patients, psoriasis may have a higher incidence, present atypical and more exuberant clinical features, and is frequently recalcitrant to treatment. Despite this aggravated severity, treatment options for psoriasis in HIV-infected individuals remain limited due to the risk of fatal immunosuppression associated with both classical immunosuppressants and new biological drugs. Notwithstanding, drug therapy in psoriasis has been undergoing major advances for the last few years, with novel drugs approved, which could significantly add to the management of HIV-infected patients. It is therefore our aim to present a review of the available literature to highlight the updated evidence on psoriasis in HIV-infected individuals, particularly in regards to its epidemiology, proposed pathophysiology, clinical presentation, currently available therapeutic options, and future perspectives.
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Affiliation(s)
- Miguel Alpalhão
- 1 Dermatology and Venereology Department, Hospital de Santa Maria, Centro Hospitalar Lisboa Norte, Lisboa, Portugal.,2 Dermatology Investigation Unit, Instituto de Medicina Molecular, Universidade de Lisboa, Lisboa, Portugal
| | - J Borges-Costa
- 1 Dermatology and Venereology Department, Hospital de Santa Maria, Centro Hospitalar Lisboa Norte, Lisboa, Portugal.,2 Dermatology Investigation Unit, Instituto de Medicina Molecular, Universidade de Lisboa, Lisboa, Portugal.,3 Clínica Universitária de Dermatologia, Faculdade de Medicina da Universidade de Lisboa, Lisboa, Portugal
| | - Paulo Filipe
- 1 Dermatology and Venereology Department, Hospital de Santa Maria, Centro Hospitalar Lisboa Norte, Lisboa, Portugal.,2 Dermatology Investigation Unit, Instituto de Medicina Molecular, Universidade de Lisboa, Lisboa, Portugal.,3 Clínica Universitária de Dermatologia, Faculdade de Medicina da Universidade de Lisboa, Lisboa, Portugal
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Li YY, Dong RJ, Cao LJ, Upadhyay P, Kuang YQ. Case of coincident severe acne and psoriasis in AIDS patient successfully treated with antiretroviral therapy. J Dermatol 2019; 46:431-435. [PMID: 30811070 DOI: 10.1111/1346-8138.14823] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2018] [Accepted: 01/17/2019] [Indexed: 11/28/2022]
Abstract
Cutaneous disorders remain a major problem in HIV-infected patients, even under antiretroviral therapy (ART). Patients at any stage of HIV/AIDS may suffer from skin lesions. Acnes and psoriasis are both common chronic and inflammatory skin diseases, and the treatment becomes more challenging and complex when combined with HIV infection. Whether the incidence and severity of acne and psoriasis are related to HIV infection is still controversial. Here, we report a rare case of an AIDS patient who developed severe acne along with psoriasis. The patient had initially received multiple systemic and topical antipsoriatic and anti-acne treatments which failed. Ultimately, he achieved dramatic clinical improvement after initiation of ART for main treatment. An 8-year follow up demonstrated that the patient has been free of symptoms of both psoriasis and acne till now.
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Affiliation(s)
- Yu-Ye Li
- Department of Dermatology and Venereology, The First Affiliated Hospital of Kunming Medical University, Kunming, China
| | - Rong-Jing Dong
- Department of Dermatology and Venereology, The First Affiliated Hospital of Kunming Medical University, Kunming, China
| | - Li-Juan Cao
- Department of Dermatology and Venereology, The First Affiliated Hospital of Kunming Medical University, Kunming, China
| | - Pratishtha Upadhyay
- Department of Dermatology and Venereology, The First Affiliated Hospital of Kunming Medical University, Kunming, China
| | - Yi-Qun Kuang
- Center for Translational Medicine, Huaihe Clinical College, Huaihe Hospital of Henan University, Kaifeng, China.,Institute of Infection and Immunity, Henan University, Kaifeng, China
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van de Kerkhof PCM. Branching immune pathways in psoriasis and its significance for disease severity assessment. J DERMATOL TREAT 2018; 29:641-642. [DOI: 10.1080/09546634.2018.1515819] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- Peter CM van de Kerkhof
- Department of dermatology Radboud University Nijmegen Medical Centre PO Box 9101 6500HB Nijmegen The Netherlands
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13
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HIV Infection Increases the Risk of Incident Psoriasis: A Nationwide Population-Based Cohort Study in Taiwan. J Acquir Immune Defic Syndr 2017; 75:493-499. [PMID: 28692580 DOI: 10.1097/qai.0000000000001431] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
BACKGROUND HIV can cause an imbalance of T lymphocytes, which may contribute to the onset of psoriasis. However, the association of HIV with incident psoriasis has not been extensively studied. OBJECTIVES The aim of this nationwide population-based cohort study was to determine the association of HIV with incident psoriasis. METHODS Since January 1, 2000, we identified adult people living with HIV/AIDS (PLWHA) from the Taiwan National Health Insurance Research Database. A control cohort without HIV infection, matched for age and sex, was selected for comparison. All patients were followed until December 31, 2012, and observed for the occurrence of psoriasis. The time-dependent Cox proportional hazards model was used to determine the association of HIV with incident psoriasis, while considering death as a competing risk event. RESULTS Of the 102,070 patients (20,294 PLWHA and 81,776 matched controls), 248 (0.24%) had incident psoriasis during a mean follow-up period of 5.53 years, including 81 (0.40%) PLWHA and 171 (0.21%) controls. After adjusting for age, sex, and comorbidities, HIV infection was found to be an independent risk factor for incident psoriasis (adjusted hazard ratio, 1.80; 95% confidence interval: 1.38 to 2.36). CONCLUSIONS The population of PLWHA is living longer; clinicians need to be aware of their higher risk of psoriasis.
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14
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Evidence for biochemical barrier restoration: Topical solenopsin analogs improve inflammation and acanthosis in the KC-Tie2 mouse model of psoriasis. Sci Rep 2017; 7:11198. [PMID: 28894119 PMCID: PMC5593857 DOI: 10.1038/s41598-017-10580-y] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2017] [Accepted: 08/09/2017] [Indexed: 12/11/2022] Open
Abstract
Psoriasis is a chronic inflammatory skin disease affecting 2.5–6 million patients in the United States. The cause of psoriasis remains unknown. Previous human and animal studies suggest that patients with a susceptible genetic background and some stimulus, such as barrier disruption, leads to a coordinated signaling events involving cytokines between keratinocytes, endothelial cells, T cells, macrophages and dendritic cells. Ceramides are endogenous skin lipids essential for maintaining skin barrier function and loss of ceramides may underlie inflammatory and premalignant skin. Ceramides act as a double-edged sword, promoting normal skin homeostasis in the native state, but can be metabolized to sphingosine-1-phosphate (S1P), linked to inflammation and tumorigenesis. To overcome this difficulty, we synthesized solenopsin analogs which biochemically act as ceramides, but cannot be metabolized to S1P. We assess their in vivo bioactivity in a well-established mouse model of psoriasis, the KC-Tie2 mouse. Topical solenopsin derivatives normalized cutaneous hyperplasia in this model, decreased T cell infiltration, interleukin (IL)-22 transcription, and reversed the upregulation of calprotectin and Toll-like receptor (TLR) 4 in inflamed skin. Finally, they stimulated interleukin (IL)-12 production in skin dendritic cells. Thus suggesting barrier restoration has both a biochemical and physical component, and both are necessary for optimal barrier restoration.
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15
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Diani M, Galasso M, Cozzi C, Sgambelluri F, Altomare A, Cigni C, Frigerio E, Drago L, Volinia S, Granucci F, Altomare G, Reali E. Blood to skin recirculation of CD4 + memory T cells associates with cutaneous and systemic manifestations of psoriatic disease. Clin Immunol 2017; 180:84-94. [PMID: 28392462 DOI: 10.1016/j.clim.2017.04.001] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2017] [Revised: 03/29/2017] [Accepted: 04/03/2017] [Indexed: 12/19/2022]
Abstract
Blood to skin recirculation could play a role in the pathogenesis of psoriasis. To investigate this possibility we dissected the phenotype of circulating T cells in psoriasis patients, calculated the correlation the clinical parameters of the disease and performed a parallel bioinformatics analysis of gene expression data in psoriatic skin. We found that circulating CCR6+ CD4+ TEM and TEFF cells significantly correlated with systemic inflammation. Conversely, the percentage of CXCR3+ CD4+ TEM cells negatively correlated with the severity of the cutaneous disease. Importantly CLA+ CD4+ TCM cells expressing CCR6+ or CCR4+CXCR3+ negatively correlated with psoriasis severity suggesting recruitment to the skin compartment. This assumption was reinforced by gene expression data showing marked increase of CCR7 and CLA-encoding gene SELPLG expression in psoriatic skin and strong association of their expression. The data enlightens a role for CD4+ T cells trafficking between blood and skin in cutaneous and systemic manifestations of psoriasis.
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Affiliation(s)
- Marco Diani
- I.R.C.C.S Istituto Ortopedico Galeazzi, Department of Dermatology and Venereology, University of Milan, Milan, Italy
| | - Marco Galasso
- Department of Morphology, Surgery and Experimental Medicine, University of Ferrara, Ferrara, Italy
| | - Chiara Cozzi
- I.R.C.C.S Istituto Ortopedico Galeazzi, Department of Dermatology and Venereology, University of Milan, Milan, Italy; I.R.C.C.S Istituto Ortopedico Galeazzi, Laboratory of Translational Immunology, Milan, Italy
| | - Francesco Sgambelluri
- I.R.C.C.S Istituto Ortopedico Galeazzi, Laboratory of Translational Immunology, Milan, Italy
| | - Andrea Altomare
- I.R.C.C.S Istituto Ortopedico Galeazzi, Department of Dermatology and Venereology, University of Milan, Milan, Italy
| | - Clara Cigni
- Department of Biotechnology and Biosciences, University of Milano-Bicocca, Milan, Italy
| | - Elena Frigerio
- I.R.C.C.S Istituto Ortopedico Galeazzi, Department of Dermatology and Venereology, University of Milan, Milan, Italy
| | - Lorenzo Drago
- I.R.C.C.S. Istituto Ortopedico Galeazzi, Laboratory of Clinical Chemistry and Microbiology, University of Milan, Milan, Italy
| | - Stefano Volinia
- Department of Morphology, Surgery and Experimental Medicine, University of Ferrara, Ferrara, Italy
| | - Francesca Granucci
- Department of Biotechnology and Biosciences, University of Milano-Bicocca, Milan, Italy
| | - Gianfranco Altomare
- I.R.C.C.S Istituto Ortopedico Galeazzi, Department of Dermatology and Venereology, University of Milan, Milan, Italy
| | - Eva Reali
- I.R.C.C.S Istituto Ortopedico Galeazzi, Laboratory of Translational Immunology, Milan, Italy.
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Yen YF, Chuang PH, Jen IA, Chen M, Lan YC, Liu YL, Lee Y, Chen YH, Chen YMA. Incidence of autoimmune diseases in a nationwide HIV/AIDS patient cohort in Taiwan, 2000-2012. Ann Rheum Dis 2016; 76:661-665. [PMID: 27590658 DOI: 10.1136/annrheumdis-2016-209815] [Citation(s) in RCA: 52] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2016] [Revised: 08/14/2016] [Accepted: 08/15/2016] [Indexed: 02/07/2023]
Abstract
OBJECTIVES It is not known if the incidences of autoimmune diseases are higher in individuals living with HIV infection or AIDS. Our study investigated the incidences of autoimmune diseases among people living with HIV/AIDS (PLWHA) in Taiwan during 2000-2012. METHODS The Taiwan National Health Insurance Research Database was used to identify PLWHA. The incidence densities of systemic and organ-specific autoimmune diseases were calculated, and age-adjusted, sex-adjusted and period-adjusted standardised incidence rates (SIRs) were obtained by using two million people from the general population as controls. To examine the effects of highly active antiretroviral therapy (HAART) on the incidence of autoimmune diseases, the incidence densities and SIRs of autoimmune diseases were calculated after stratifying PLWHA by HAART status. RESULTS Of the 20 444 PLWHA identified, the overall mean (SD) age was 30.1 (11.0) years; 67.2% of the subjects received HAART. As compared with the general population, SIRs were higher for incident Sjögren syndrome (SIR=1.64; 95% CI 1.24 to 2.13), psoriasis (SIR=2.05; 95% CI 1.67 to 2.48), systemic lupus erythematosus (SLE) (SIR=2.59; 95% CI 1.53 to 4.09), autoimmune haemolytic anaemia (SIR=35.06; 95% CI 23.1 to 51.02) and uveitis (SIR=2.50; 95% CI 2.05 to 3.02), but were lower for incident ankylosing spondyloarthritis (SIR=0.70; 95% CI 0.48 to 0.99). When the effect of HAART on incident autoimmune diseases was considered, PLWHA who received HAART had higher SIRs for psoriasis, autoimmune haemolytic anaemia and uveitis, but had lower risks of rheumatoid arthritis (RA) and ankylosing spondyloarthritis. In contrast, PLWHA who did not receive HAART had higher SIRs for Sjögren syndrome, psoriasis, RA, SLE, scleroderma, polymyositis, autoimmune haemolytic anaemia and Hashimoto's thyroiditis. CONCLUSIONS PLWHA had higher risks of incident Sjögren syndrome, psoriasis, SLE, autoimmune haemolytic anaemia and uveitis.
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Affiliation(s)
- Yung-Feng Yen
- Section of Infectious Diseases, Taipei City Hospital, Taipei City Government, Taipei, Taiwan.,School of Medicine, National Yang-Ming University, Taipei, Taiwan
| | - Pei-Hung Chuang
- Center for Prevention and Treatment of Occupational Injury and Diseases, Taipei Veterans General Hospital, Taipei, Taiwan.,Division of Clinical Toxicology and Occupational Medicine, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan
| | - I-An Jen
- Department and Institute of Public Health, National Yang-Ming University, Taipei, Taiwan
| | - Marcelo Chen
- Department of Urology, Mackay Memorial Hospital, Taipei, Taiwan.,Department of Cosmetic Applications and Management, Mackay Junior College of Medicine, Nursing and Management, Taipei, Taiwan
| | - Yu-Ching Lan
- Department of Health Risk Management, China Medical University, Taichung, Taiwan
| | - Yen-Ling Liu
- Center for Infectious Disease and Cancer Research, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Yun Lee
- Center for Infectious Disease and Cancer Research, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Yen-Hsu Chen
- School of Medicine, Graduate Institute of Medicine, Sepsis Research Center, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan.,Division of Infectious Diseases, Department of Internal Medicine, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung, Taiwan.,Department of Biological Science and Technology, College of Biological Science and Technology, National Chiao Tung University, HsinChu, Taiwan
| | - Yi-Ming Arthur Chen
- Center for Infectious Disease and Cancer Research, Kaohsiung Medical University, Kaohsiung, Taiwan.,Department of Microbiology and Institute of Medical Research, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
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17
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Ruiz-Romeu E, Ferran M, Sagristà M, Gómez J, Giménez-Arnau A, Herszenyi K, Hóllo P, Celada A, Pujol R, Santamaria-Babí LF. Streptococcus pyogenes-induced cutaneous lymphocyte antigen-positive T cell-dependent epidermal cell activation triggers TH17 responses in patients with guttate psoriasis. J Allergy Clin Immunol 2016; 138:491-499.e6. [PMID: 27056267 DOI: 10.1016/j.jaci.2016.02.008] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2015] [Revised: 01/22/2016] [Accepted: 02/05/2016] [Indexed: 12/18/2022]
Abstract
BACKGROUND Guttate psoriasis (GP) is characterized by acute onset of small, rounded psoriatic lesions. Although this particular phenotype of psoriasis is usually associated with streptococcal throat infections and mainly occurs in HLA-Cw6(+) patients, the specific immunologic response to this innate stimulus that causes these skin lesions is poorly understood. OBJECTIVE This study aims to elucidate how key cellular elements of patients with GP respond to Streptococcus pyogenes and whether this initial immune response is favored by the genetic and environmental background of these patients. METHODS Circulating memory T cells and autologous epidermal cells from samples from either patients with GP (n = 14) or healthy control subjects (n = 6) were cocultured ex vivo in the presence of an S pyogenes extract. Levels of the psoriasis-associated cytokines IL-17A, IL-17F, IFN-γ, TNF-α, IL-6, and IL-8 were determined. The expression of several genes with increased (DEFB4, S100A7, LCN2, IL36G, IL8, CXCL9, CXCL10, and CXCL11) or decreased (FLG and LOR) transcripts in psoriatic lesions was examined in keratinocytes treated with coculture supernatants. RESULTS When skin-homing effector memory cutaneous lymphocyte antigen-positive T cells were used in cocultures, a TH17-dominant response was observed, as reflected by the higher amounts of IL-17A and IL-17F than IFN-γ. Moreover, a higher TH17 response was observed in cells isolated from patients with flares associated with a streptococcal tonsillitis and with the HLA-Cw6 allele (cohort 1). In addition, in normal keratinocytes the supernatants from these cocultures induced an increase in IL-17-associated genes, such as DEFB4, S100A7, LCN2, IL36G, and IL8 but a decrease in FLG and LOR, thereby confirming the role of activated TH17 cells. CONCLUSION This study reveals a dominant TH17 response of cutaneous lymphocyte antigen-positive T cells activated by epidermal cells and S pyogenes in patients with GP.
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Affiliation(s)
- Ester Ruiz-Romeu
- Translational Immunology, Department of Cellular Biology, Physiology and Immunology, Universitat de Barcelona, Barcelona, Spain
| | - Marta Ferran
- Department of Dermatology, Hospital del Mar, Research Group in Inflammatory Dermatologic Diseases, IMIM, Universitat Autònoma de Barcelona, Barcelona, Spain
| | | | - Julià Gómez
- Laboratori de Referència de Catalunya, El Prat de Llobregat, Barcelona, Spain
| | - Ana Giménez-Arnau
- Department of Dermatology, Hospital del Mar, Research Group in Inflammatory Dermatologic Diseases, IMIM, Universitat Autònoma de Barcelona, Barcelona, Spain
| | - Krisztina Herszenyi
- Department of Dermatovenerology and Oncodermatolgy, Semmelweis Egyetem, Budapest, Hungary
| | - Péter Hóllo
- Department of Dermatovenerology and Oncodermatolgy, Semmelweis Egyetem, Budapest, Hungary
| | - Antonio Celada
- Macrophage Biology, Department of Cellular Biology, Physiology and Immunology, Universitat de Barcelona, Barcelona, Spain
| | - Ramon Pujol
- Department of Dermatology, Hospital del Mar, Research Group in Inflammatory Dermatologic Diseases, IMIM, Universitat Autònoma de Barcelona, Barcelona, Spain
| | - Luis F Santamaria-Babí
- Translational Immunology, Department of Cellular Biology, Physiology and Immunology, Universitat de Barcelona, Barcelona, Spain.
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18
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Sezer E, Böer-Auer A, Cetin E, Tokat F, Durmaz E, Sahin S, Ince U. Diagnostic utility of Ki-67 and Cyclin D1 immunostaining in differentiation of psoriasis vs. other psoriasiform dermatitis. Dermatol Pract Concept 2015; 5:7-13. [PMID: 26336616 PMCID: PMC4536874 DOI: 10.5826/dpc.0503a02] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2014] [Accepted: 05/03/2015] [Indexed: 11/13/2022] Open
Abstract
Background: Differentiation of psoriasis from non-psoriasis psoriasiform dermatitis (NPPD) may be difficult for dermatopathologists, as lack of distinctive histopathological features in a subset of cases may cause confusion in diagnosis. Objective: As the prototype of psoriasiform dermatitis, psoriasis is a hyperproliferative skin disorder with increased epidermal turnover compared with NPPD, we investigated the role of proliferation markers, Ki-67 and Cyclin D1 as diagnostic tools to differentiate psoriasis from other psoriasiform dermatitis. Methods: Histopathological specimens of psoriasis (n = 35) and NPPD (n = 36, 14 pityriasis rubra pilaris, 12 pityriasis rosea and 10 lichen simplex) cases were reviewed and immunohistochemically stained for Ki-67 and Cyclin D1. Ki-67 and Cyclin D1 positive cells were counted for suprabasal, and total epidermal immunostaining per mm2. Results: Suprabasal and total epidermal cell counts for Ki-67 were found to be significantly higher in the psoriasis group compared with the NPPD group (p < 0.05). An important and interesting feature was the presence of a cut-off value for the suprabasal/total epidermal cell count ratio of 75% for Ki-67 immunostaining, which was higher in all patients having psoriasis (range, 77.1% – 92.4%) and lower in all NPPD cases (range, 21.0% – 73.3%). However, suprabasal Cyclin D1 cell counts were higher in the psoriasis group compared with the NPPD group (p < 0.05), total epidermal Cyclin D1 cell counts were not statistically significant in either group (p = 0.167), and a cut-off value for suprabasal/total epidermal cell count ratio to distinguish these two entities was not detected using this immunostain. Conclusions: We suggest that Ki-67 is a more sensitive marker than Cyclin D1 in terms of having a cutoff value of 75% for the suprabasal/total epidermal immunoreactive cell count ratio, which we believe could be useful for dermatopathologists in differentiating psoriasis from other psoriasiform dermatitis.
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Affiliation(s)
- Engin Sezer
- Department of Dermatology, Acibadem University School of Medicine, Istanbul, Turkey
| | | | - Emel Cetin
- Department of Pathology, Acibadem University School of Medicine, Istanbul, Turkey
| | - Fatma Tokat
- Department of Pathology, Acibadem University School of Medicine, Istanbul, Turkey
| | - Emel Durmaz
- Department of Dermatology, Acibadem University School of Medicine, Istanbul, Turkey
| | - Sedef Sahin
- Department of Dermatology, Acibadem University School of Medicine, Istanbul, Turkey
| | - Umit Ince
- Department of Pathology, Acibadem University School of Medicine, Istanbul, Turkey
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19
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Chang SC, Huq R, Chhabra S, Beeton C, Pennington MW, Smith BJ, Norton RS. N-Terminally extended analogues of the K⁺ channel toxin from Stichodactyla helianthus as potent and selective blockers of the voltage-gated potassium channel Kv1.3. FEBS J 2015; 282:2247-59. [PMID: 25864722 DOI: 10.1111/febs.13294] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2014] [Revised: 03/22/2015] [Accepted: 04/06/2015] [Indexed: 12/20/2022]
Abstract
The voltage-gated potassium channel Kv1.3 is an important target for the treatment of autoimmune diseases and asthma. Blockade of Kv1.3 by the sea anemone peptide K⁺-channel toxin from Stichodactyla helianthus (ShK) inhibits the proliferation of effector memory T lymphocytes and ameliorates autoimmune diseases in animal models. However, the lack of selectivity of ShK for Kv1.3 over the Kv1.1 subtype has driven a search for Kv1.3-selective analogues. In the present study, we describe N-terminally extended analogues of ShK that contain a negatively-charged Glu, designed to mimic the phosphonate adduct in earlier Kv1.3-selective analogues, and consist entirely of common protein amino acids. Molecular dynamics simulations indicated that a Trp residue at position [-3] of the tetrapeptide extension could form stable interactions with Pro377 of Kv1.3 and best discriminates between Kv1.3 and Kv1.1. This led to the development of ShK with an N-terminal Glu-Trp-Ser-Ser extension ([EWSS]ShK), which inhibits Kv1.3 with an IC₅₀ of 34 pm and is 158-fold selective for Kv1.3 over Kv1.1. In addition, [EWSS]ShK is more than 2900-fold more selective for Kv1.3 over Kv1.2 and KCa3.1 channels. As a highly Kv1.3-selective analogue of ShK based entirely on protein amino acids, which can be produced by recombinant expression, this peptide is a valuable addition to the complement of therapeutic candidates for the treatment of autoimmune diseases.
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Affiliation(s)
- Shih C Chang
- Medicinal Chemistry, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Vic., Australia
| | - Redwan Huq
- Department of Molecular Physiology and Biophysics, Baylor College of Medicine, Houston, TX, USA
| | - Sandeep Chhabra
- Medicinal Chemistry, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Vic., Australia
| | - Christine Beeton
- Department of Molecular Physiology and Biophysics, Baylor College of Medicine, Houston, TX, USA
| | | | - Brian J Smith
- Department of Chemistry and Physics, La Trobe Institute for Molecular Science, La Trobe University, Melbourne, Vic., Australia
| | - Raymond S Norton
- Medicinal Chemistry, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Vic., Australia
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20
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Liu X, Walton SF, Murray HC, King M, Kelly A, Holt DC, Currie BJ, McCarthy JS, Mounsey KE. Crusted scabies is associated with increased IL-17 secretion by skin T cells. Parasite Immunol 2015; 36:594-604. [PMID: 25040151 DOI: 10.1111/pim.12129] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2014] [Accepted: 07/02/2014] [Indexed: 12/14/2022]
Abstract
Scabies is an ectoparasitic infestation by the mite Sarcoptes scabiei. Although commonly self-limiting, a fraction of patients develop severely debilitating crusted scabies. The immune mechanisms underlying the development of crusted scabies are unclear, and undertaking longitudinal infection studies in humans is difficult. We utilized a porcine model to compare cellular immune responses in peripheral blood and skin of pigs with different clinical manifestations of scabies (n = 12), and in uninfected controls (n = 6). Although clinical symptoms were not evident until at least 4 weeks post-infestation, the numbers of peripheral IFNγ-secreting CD4(+) T cells and γδ T cells increased in infected pigs from week 1 post-infestation. γδ T cells remained increased in the blood at week 15 post-infestation. At week 15, skin cell infiltrates from pigs with crusted scabies had significantly higher CD8(+) T cell, γδ T cell and IL-17(+) cell numbers than those with ordinary scabies. Peripheral IL-17 levels were not increased, suggesting that localized skin IL-17-secreting T cells may play a critical role in the pathogenesis of crusted scabies development. Given the potential of anti-IL-17 immunotherapy demonstrated for other inflammatory skin diseases, this study may provide a novel therapeutic avenue for patients with recurrent crusted scabies.
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Affiliation(s)
- X Liu
- Inflammation & Healing Research Cluster, School of Health & Sport Sciences, University of the Sunshine Coast, Maroochydore, Qld, Australia
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21
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Kundu-Raychaudhuri S, Chen YJ, Wulff H, Raychaudhuri SP. Kv1.3 in psoriatic disease: PAP-1, a small molecule inhibitor of Kv1.3 is effective in the SCID mouse psoriasis--xenograft model. J Autoimmun 2014; 55:63-72. [PMID: 25175978 DOI: 10.1016/j.jaut.2014.07.003] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2014] [Revised: 07/02/2014] [Accepted: 07/18/2014] [Indexed: 12/26/2022]
Abstract
Kv1.3 channels regulate the activation/proliferation of effector memory T cells and thus play a critical role in the pathogenesis of autoimmune diseases. Using a combination of immunohistochemistry, confocal microscopy, flow cytometry and electrophysiology methods we observed a significant enrichment of activated Kv1.3(+) memory T cells in psoriasis plaques and synovial fluid from patients with psoriasis/psoriatic arthritis (PsA) compared to non-lesional psoriatic skin, normal skin or peripheral blood lympho-mononuclear cells. In in vitro studies performed with lesional mononuclear cells or T cells derived from skin and joints of psoriatic disease, the small molecule Kv1.3 blocker PAP-1 dose-dependently inhibited proliferation and suppressed IL-2 and IFN-γ production. To further substantiate the pathologic role of Kv1.3 high TEM cells in psoriatic disease we tested whether PAP-1 is able to improve psoriatic disease pathology in the SCID mouse-psoriasis skin xenograft model. Following four weeks of daily treatment with 2% PAP-1 ointment we noticed about 50% reduction in the epidermal thickness (rete peg length) and the number of CD3(+) lymphocytes/mm(2) of dermis decreased by 85%. Vehicle treated and untreated plaques in contrast remained unchanged and showed no reduction in epidermis thickness and infiltrating CD3(+) T cells and HLA-DR(+) T cells. Based on these results we propose the development of Kv1.3 targeted topical immunotherapy for psoriasis and possibly for other inflammatory skin conditions, where effector memory T cells are involved in the pathogenesis.
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Affiliation(s)
- Smriti Kundu-Raychaudhuri
- VA Medical Center Sacramento, 10535 Hospital Way, Mather, CA 95655, USA; Department of Pharmacology, University of California Davis, School of Medicine, Davis, CA, USA
| | - Yi-Je Chen
- Department of Pharmacology, University of California Davis, School of Medicine, Davis, CA, USA
| | - Heike Wulff
- Department of Pharmacology, University of California Davis, School of Medicine, Davis, CA, USA
| | - Siba P Raychaudhuri
- Psoriasis Clinic, Department of Dermatology, VA Medical Center Sacramento, CA, USA; Division of Rheumatology, Allergy & Clinical Immunology, University of California Davis, School of Medicine, Davis, CA, USA.
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22
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Jeong YS, Kim MS, Shin JH, Cho JK, Lee HI, Kim HJ, Choi JP. A Case of Severe HIV-Associated Psoriasis Successfully Treated with Acitretin Therapy. Infect Chemother 2014; 46:115-9. [PMID: 25024875 PMCID: PMC4091363 DOI: 10.3947/ic.2014.46.2.115] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2013] [Revised: 08/23/2013] [Accepted: 08/23/2013] [Indexed: 11/24/2022] Open
Abstract
Psoriasis is a chronic inflammatory skin disease that involves immune-mediated cutaneous inflammation and keratinocyte hyperproliferation. Psoriasis in patients with HIV responds poorly to treatment and has a high morbidity rate, thus posing a challenge to clinicians. Until now, there have been no documented cases of acitretin therapy for HIV-associated psoriasis in Korea. Here, we report a case of safe and successful therapy with acitretin in a 52-year-old man with HIV-associated psoriasis that responded poorly to previous treatments including steroids and ultraviolet B phototherapy. We also review the relevant literature.
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Affiliation(s)
- Yeon Sang Jeong
- Department of Internal Medicine, Seoul Medical Center, Seoul, Korea
| | - Min Sung Kim
- Department of Internal Medicine, Seoul Medical Center, Seoul, Korea
| | - Jin Ho Shin
- Department of Internal Medicine, Seoul Medical Center, Seoul, Korea
| | - Jin Kyung Cho
- Department of Internal Medicine, Seoul Medical Center, Seoul, Korea
| | - Hyang Im Lee
- Department of Pathology, Seoul Medical Center, Seoul, Korea
| | - Hyun Jung Kim
- Department of Dermatology, Seoul Medical Center, Seoul, Korea
| | - Jae-Phil Choi
- Department of Internal Medicine, Seoul Medical Center, Seoul, Korea
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Keijsers RRMC, van der Velden HMJ, van Erp PEJ, de Boer-van Huizen RT, Joosten I, Koenen HJPM, van de Kerkhof PCM. Balance of Treg vs. T-helper cells in the transition from symptomless to lesional psoriatic skin. Br J Dermatol 2014; 168:1294-302. [PMID: 23330679 DOI: 10.1111/bjd.12236] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
BACKGROUND In the pathogenesis of psoriasis, proinflammatory T cells are strongly involved in the inflammatory process, where regulatory T-cell (Treg) function is impaired. OBJECTIVES As effective Treg function is associated with a numerical balance between Treg and effector T cells, we wondered whether Treg/T-helper cell ratios may be associated with certain stages of the inflammatory process. We opted for the margin zone model as a dynamic approach. METHODS From nine patients with chronic plaque psoriasis, 3-mm punch biopsies were obtained from the centre and margin of the lesion, perilesional skin and distant uninvolved skin. Skin biopsies of 10 healthy volunteers were included as a control. Samples were analysed using immunohistochemistry and immunofluorescence. RESULTS In the transition from symptomless to lesional skin, a significant increase of CD3+, CD4+ and Foxp3+ cells was found. In seven of nine patients the ratio of Treg (Foxp3+) vs. CD4+ T cells was higher in the distant uninvolved skin than in the perilesional and lesional skin. Interestingly, the Foxp3/CD4 ratio in the distant uninvolved skin was even higher than in the skin of healthy controls. Notably, we found that most of the interleukin (IL)-17 expression was not related to CD4+ cells, but to mast cells. CONCLUSIONS The relatively high Foxp3/CD4 ratio in symptomless skin of patients with psoriasis suggests an active immune controlling mechanism distant from the psoriatic plaque. In the margin and centre of the plaque the ratio appears skewed towards effector cells associated with inflammation. IL-17, an important driver of the psoriatic process, is mostly related to mast cells, and only sporadically to T cells.
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Affiliation(s)
- R R M C Keijsers
- Department of Dermatology, Radboud University Nijmegen Medical Centre, PO Box 9101, 6500 HB Nijmegen, The Netherlands.
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Ferran M, Romeu ER, Rincón C, Sagristà M, Giménez Arnau AM, Celada A, Pujol RM, Holló P, Jókai H, Santamaria-Babí LF. Circulating CLA+ T lymphocytes as peripheral cell biomarkers in T-cell-mediated skin diseases. Exp Dermatol 2014; 22:439-42. [PMID: 23800052 DOI: 10.1111/exd.12154] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/16/2013] [Indexed: 02/05/2023]
Abstract
T lymphocytes expressing the CLA antigen constitute a subset of effector memory lymphocytes that are functionally involved in T-cell-mediated cutaneous diseases. Skin-seeking lymphocytes recirculate between inflamed skin and blood during cutaneous inflammation. Many studies in different T-cell-mediated inflammatory cutaneous diseases have clearly related their pathologic mechanisms to CLA+ T cells. Based on common features of these cells in different cutaneous disorders mediated by T cells, we propose that circulating CLA+T cells could constitute very useful peripheral cellular biomarkers for T-cell-mediated skin diseases.
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Affiliation(s)
- Marta Ferran
- Department of Dermatology, Hospital del Mar, Research Group in Inflammatory Dermatologic Diseases, IMIM, Universitat Autònoma de Barcelona, Barcelona, Spain
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El Shiemy SM, Abd Allah MA, Abd Allah TN, El Fangary MM, Saudi WM, Sayed AM. Effect of narrow-band ultraviolet B on the level of interleukin-17 in psoriasis patients. JOURNAL OF THE EGYPTIAN WOMENʼS DERMATOLOGIC SOCIETY 2013; 10:85-88. [DOI: 10.1097/01.ewx.0000430953.49521.93] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/01/2023]
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26
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Ferran M, Galván AB, Rincón C, Romeu ER, Sacrista M, Barboza E, Giménez-Arnau A, Celada A, Pujol RM, Santamaria-Babí LF. Streptococcus induces circulating CLA(+) memory T-cell-dependent epidermal cell activation in psoriasis. J Invest Dermatol 2013; 133:999-1007. [PMID: 23190888 DOI: 10.1038/jid.2012.418] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Streptococcal throat infection is associated with a specific variant of psoriasis and with HLA-Cw6 expression. In this study, activation of circulating psoriatic cutaneous lymphocyte-associated antigen (CLA)(+) memory T cells cultured together with epidermal cells occurred only when streptococcal throat extracts were added. This triggered the production of Th1, Th17, and Th22 cytokines, as well as epidermal cell mediators (CXCL8, CXCL9, CXCL10, and CXCL11). Streptococcal extracts (SEs) did not induce any activation with either CLA(-) cells or memory T cells cultured together with epidermal cells from healthy subjects. Intradermal injection of activated culture supernatants into mouse skin induced epidermal hyperplasia. SEs also induced activation when we used epidermal cells from nonlesional skin of psoriatic patients with CLA(+) memory T cells. Significant correlations were found between SE induced upregulation of mRNA expression for ifn-γ, il-17, il-22, ip-10, and serum level of antistreptolysin O in psoriatic patients. This study demonstrates the direct involvement of streptococcal infection in pathological mechanisms of psoriasis, such as IL-17 production and epidermal cell activation.
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Affiliation(s)
- Marta Ferran
- Department of Dermatology, Universitat Autònoma de Barcelona, Barcelona, Spain
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Rise in dermal CD11c+ dendritic cells associates with early-stage development of psoriatic lesions. Arch Dermatol Res 2012; 304:443-9. [PMID: 22438166 PMCID: PMC3401310 DOI: 10.1007/s00403-012-1231-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2011] [Revised: 02/28/2012] [Accepted: 03/06/2012] [Indexed: 02/05/2023]
Abstract
There is limited information available regarding the phenotype and function of leukocytes involved in the earliest stages of psoriatic lesion development. In this study, we examined the presence of different types of leukocytes in psoriatic point lesions collected at three 1-week interval time points from a recent and simultaneously formed group of point lesions. The cells were quantified and compared with K16 expression and epidermal thickness, both typically increased in this disease and considered as hallmarks. We found a significant correlation between K16+ cell increment and the increase in epidermal thickness in the timeframe of 14 days. The change in CD3+, CD4+, and CD8+ T-cell numbers in the dermis showed a significant association with these two features from d7 to d14, whereas in the epidermis only CD8+ T cells demonstrated a significant correlation. Remarkably, the relationship between T cells and disease progression was preceded by a significant correlation of CD11c+ dendritic cells (DCs) with K16 expression and epidermal thickness from baseline onwards. Interestingly, there was also a numeric correlation of CD11c+ DCs with the CD3+ T-cell shifts from d7 to d14. A significant correlation was also found between dermal CD14+ cells and K16 expression from d7 to d14. BDCA-2+ plasmacytoid DCs were absent in non-lesional skin, but found at low numbers in most lesions. The change in plasmacytoid DC or neutrophil numbers did not correlate with lesion development. In conclusion, our study suggests a relevant role for T cells, and in particular dermal CD11c+ DCs, in the earliest stage of psoriatic lesion development.
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CXCL16 and CXCR6 Are Upregulated in Psoriasis and Mediate Cutaneous Recruitment of Human CD8+ T Cells. J Invest Dermatol 2012; 132:626-34. [DOI: 10.1038/jid.2011.371] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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Chi V, Pennington MW, Norton RS, Tarcha EJ, Londono LM, Sims-Fahey B, Upadhyay SK, Lakey JT, Iadonato S, Wulff H, Beeton C, Chandy KG. Development of a sea anemone toxin as an immunomodulator for therapy of autoimmune diseases. Toxicon 2011; 59:529-46. [PMID: 21867724 DOI: 10.1016/j.toxicon.2011.07.016] [Citation(s) in RCA: 162] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2011] [Revised: 06/16/2011] [Accepted: 07/20/2011] [Indexed: 01/05/2023]
Abstract
Electrophysiological and pharmacological studies coupled with molecular identification have revealed a unique network of ion channels--Kv1.3, KCa3.1, CRAC (Orai1 + Stim1), TRPM7, Cl(swell)--in lymphocytes that initiates and maintains the calcium signaling cascade required for activation. The expression pattern of these channels changes during lymphocyte activation and differentiation, allowing the functional network to adapt during an immune response. The Kv1.3 channel is of interest because it plays a critical role in subsets of T and B lymphocytes implicated in autoimmune disorders. The ShK toxin from the sea anemone Stichodactyla helianthus is a potent blocker of Kv1.3. ShK-186, a synthetic analog of ShK, is being developed as a therapeutic for autoimmune diseases, and is scheduled to begin first-in-man phase-1 trials in 2011. This review describes the journey that has led to the development of ShK-186.
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Affiliation(s)
- Victor Chi
- Department of Physiology and Biophysics, UC Irvine, Irvine, CA 92697, USA
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31
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Adly MA, Abdelwahed Hussein MR. Expression of CD1d Protein in Human Testis Showing Normal and Abnormal Spermatogenesis. Ultrastruct Pathol 2011; 35:124-9. [DOI: 10.3109/01913123.2010.546944] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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32
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Res PCM, Piskin G, de Boer OJ, van der Loos CM, Teeling P, Bos JD, Teunissen MBM. Overrepresentation of IL-17A and IL-22 producing CD8 T cells in lesional skin suggests their involvement in the pathogenesis of psoriasis. PLoS One 2010; 5:e14108. [PMID: 21124836 PMCID: PMC2991333 DOI: 10.1371/journal.pone.0014108] [Citation(s) in RCA: 237] [Impact Index Per Article: 16.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2010] [Accepted: 10/19/2010] [Indexed: 12/20/2022] Open
Abstract
BACKGROUND Although recent studies indicate a crucial role for IL-17A and IL-22 producing T cells in the pathogenesis of psoriasis, limited information is available on their frequency and heterogeneity and their distribution in skin in situ. METHODOLOGY/PRINCIPAL FINDINGS By spectral imaging analysis of double-stained skin sections we demonstrated that IL-17 was mainly expressed by mast cells and neutrophils and IL-22 by macrophages and dendritic cells. Only an occasional IL-17(pos), but no IL-22(pos) T cell could be detected in psoriatic skin, whereas neither of these cytokines was expressed by T cells in normal skin. However, examination of in vitro-activated T cells by flow cytometry revealed that substantial percentages of skin-derived CD4 and CD8 T cells were able to produce IL-17A alone or together with IL-22 (i.e. Th17 and Tc17, respectively) or to produce IL-22 in absence of IL-17A and IFN-γ (i.e. Th22 and Tc22, respectively). Remarkably, a significant proportional rise in Tc17 and Tc22 cells, but not in Th17 and Th22 cells, was found in T cells isolated from psoriatic versus normal skin. Interestingly, we found IL-22 single-producers in many skin-derived IL-17A(pos) CD4 and CD8 T cell clones, suggesting that in vivo IL-22 single-producers may arise from IL-17A(pos) T cells as well. CONCLUSIONS/SIGNIFICANCE The increased presence of Tc17 and Tc22 cells in lesional psoriatic skin suggests that these types of CD8 T cells play a significant role in the pathogenesis of psoriasis. As part of the skin-derived IL-17A(pos) CD4 and CD8 T clones developed into IL-22 single-producers, this demonstrates plasticity in their cytokine production profile and suggests a developmental relationship between Th17 and Th22 cells and between Tc17 and Tc22 cells.
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Affiliation(s)
- Pieter C. M. Res
- Department of Dermatology, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
| | - Gamze Piskin
- Department of Dermatology, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
| | - Onno J. de Boer
- Department of Pathology, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
| | - Chris M. van der Loos
- Department of Pathology, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
| | - Peter Teeling
- Department of Pathology, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
| | - Jan D. Bos
- Department of Dermatology, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
| | - Marcel B. M. Teunissen
- Department of Dermatology, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
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Yun WJ, Lee DW, Chang SE, Yoon GS, Huh JR, Won CH, Lee MW, Kim SE, Kim BJ, Moon KC, Choi JH. Role of CD4CD25FOXP3 Regulatory T Cells in Psoriasis. Ann Dermatol 2010; 22:397-403. [PMID: 21165208 DOI: 10.5021/ad.2010.22.4.397] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2010] [Revised: 06/16/2010] [Accepted: 06/16/2010] [Indexed: 12/21/2022] Open
Abstract
BACKGROUND CD4(+)CD25(high+)regulatory T cells (Tregs) are considered to be of vital importance for maintaining immunologic self-tolerance and preventing autoimmune diseases. These cells have been found to be deficient in skin lesions and in the peripheral blood of patients with psoriasis. OBJECTIVE To investigate the role of Tregs in the pathogenesis of psoriasis and to evaluate the changes in Tregs in relation to the severity and the clinical course of psoriasis. METHODS Immunohistochemistry (CD3, 4, 8, 79 and FOXP3) was performed in 22 psoriatic patients compared to 5 normal controls. Flow cytometry (CD3, 4, 8, 25 and FOXP3) was performed in 18 psoriatic patients and 8 normal volunteers and reverse transcriptase polymerase chain reaction (foxp3 mRNA) was performed in 8 psoriasis patients. RESULTS An increase in the FOXP3(+) cell fraction was detected in the lesional psoriatic skin irrespective of the severity of psoriasis as compared with the normal skin. However, a decrease in FOXP3(+) cells was observed in the samples obtained from psoriasis of 'acute course'. FOXP3(+) Treg populations in the blood of the 'acute course' psoriasis was not different compared to that of 'chronic course' psoriasis and normal controls. CONCLUSION The deficiency of FOXP3(+) Tregs in the lesional psoriatic skin might be responsible for the exacerbation of psoriasis.
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Bovenschen HJ, Langewouters AMG, van de Kerkhof PCM. Dimethylfumarate for psoriasis: Pronounced effects on lesional T-cell subsets, epidermal proliferation and differentiation, but not on natural killer T cells in immunohistochemical study. Am J Clin Dermatol 2010; 11:343-50. [PMID: 20553063 DOI: 10.2165/11533240-000000000-00000] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
BACKGROUND T-cell infiltration, epidermal hyperproliferation, and disturbed keratinization are pathologic hallmarks of plaque psoriasis. Oral fumaric acid esters are an effective therapy for psoriasis and are believed to exert their effects mainly through their anti-inflammatory properties. OBJECTIVE To investigate the differential effects of dimethylfumarate (BG-12; FAG-201) for psoriasis on lesional T-cell subsets, natural killer (NK) T cells, and keratinocyte hyperproliferation and differentiation. STUDY DESIGN A before-and-after clinical and immunohistochemical study as part of a larger clinical trial. SETTING Single outpatient clinic. PATIENTS Six patients with moderate-to-severe psoriasis. INTERVENTION Dimethylfumarate 720 mg daily for 16 weeks. METHODS Biopsies were taken from the lesional skin of six psoriatic patients, at baseline and after 16 weeks of treatment with dimethylfumarate. Clinical severity scores were obtained (Psoriasis Area Severity Index [PASI] and psoriasis severity SUM scores). T-cell subsets (CD4+, CD8+, CD45RO+, CD45RA+, CD2+, CD25+), cells expressing NK receptors (CD94, CD161), an epidermal proliferation marker (Ki67), and a keratinization marker (K10) were immunohistochemically stained and, together with 'epidermal thickness,' quantified using image analysis. RESULTS At week 16, the mean PASI and SUM scores were reduced by 55% (p < 0.01) and 49% (p < 0.01), respectively. In line with these results, epidermal hyperproliferation, keratinocyte differentiation, and epidermal thickness significantly improved. In the dermis and the epidermis, the relevant T-cell subsets significantly declined. However, in both the lesional psoriatic dermis and epidermis, cells expressing NK receptors (CD94 and CD161) persisted after 16 weeks of treatment. CONCLUSIONS Dimethylfumarate is an effective therapy for moderate-to-severe plaque psoriasis. The drug may act by reducing lesional T-cell subsets and normalizing epidermal hyperproliferation and keratinization, but does not reduce NKT cells.
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Affiliation(s)
- H Jorn Bovenschen
- Department of Dermatology, Radboud University Nijmegen Medical Centre, the Netherlands.
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Morar N, Willis-Owen SA, Maurer T, Bunker CB. HIV-associated psoriasis: pathogenesis, clinical features, and management. THE LANCET. INFECTIOUS DISEASES 2010; 10:470-8. [DOI: 10.1016/s1473-3099(10)70101-8] [Citation(s) in RCA: 110] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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Piruzian E, Bruskin S, Ishkin A, Abdeev R, Moshkovskii S, Melnik S, Nikolsky Y, Nikolskaya T. Integrated network analysis of transcriptomic and proteomic data in psoriasis. BMC SYSTEMS BIOLOGY 2010; 4:41. [PMID: 20377895 PMCID: PMC2873316 DOI: 10.1186/1752-0509-4-41] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/30/2009] [Accepted: 04/08/2010] [Indexed: 11/10/2022]
Abstract
BACKGROUND Psoriasis is complex inflammatory skin pathology of autoimmune origin. Several cell types are perturbed in this pathology, and underlying signaling events are complex and still poorly understood. RESULTS In order to gain insight into molecular machinery underlying the disease, we conducted a comprehensive meta-analysis of proteomics and transcriptomics of psoriatic lesions from independent studies. Network-based analysis revealed similarities in regulation at both proteomics and transcriptomics level. We identified a group of transcription factors responsible for overexpression of psoriasis genes and a number of previously unknown signaling pathways that may play a role in this process. We also evaluated functional synergy between transcriptomics and proteomics results. CONCLUSIONS We developed network-based methodology for integrative analysis of high throughput data sets of different types. Investigation of proteomics and transcriptomics data sets on psoriasis revealed versatility in regulatory machinery underlying pathology and showed complementarities between two levels of cellular organization.
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Affiliation(s)
- Eleonora Piruzian
- Vavilov Institute of General Genetics, Russian Academy of Sciences, Gubkina St, 3 GSP-1, 119991 Moscow, Russia
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Production of Interleukin 8 by Circulating CLA+ T Cells With Skin Tropism in Patients With Psoriasis and in Healthy Controls. ACTAS DERMO-SIFILIOGRAFICAS 2010. [DOI: 10.1016/s1578-2190(10)70601-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
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Ferran M, Galván A, Giménez-Arnau A, Pujol R, Santamaría-Babi L. Producción preferente de IL-8 por linfocitos T CLA+ circulantes con tropismo cutáneo en pacientes con psoriasis y en sujetos sanos. ACTAS DERMO-SIFILIOGRAFICAS 2010. [DOI: 10.1016/j.ad.2009.07.021] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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Rutter KJ, Watson RE, Cotterell LF, Brenn T, Griffiths CE, Rhodes LE. Severely Photosensitive Psoriasis: A Phenotypically Defined Patient Subset. J Invest Dermatol 2009; 129:2861-7. [DOI: 10.1038/jid.2009.156] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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40
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Teige I, Bäcklund A, Svensson L, Kvist PH, Petersen TK, Kemp K. Induced keratinocyte hyper-proliferation in alpha2beta1 integrin transgenic mice results in systemic immune cell activation. Int Immunopharmacol 2009; 10:107-14. [PMID: 19840869 DOI: 10.1016/j.intimp.2009.10.004] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2009] [Revised: 09/30/2009] [Accepted: 10/09/2009] [Indexed: 12/22/2022]
Abstract
alpha2beta1 integrins are normally confined to the proliferating basal layers of the epidermis. However, during wound healing and in psoriasis, these integrins are expressed on keratinocytes in suprabasal layers correlating with a less differentiated phenotype. Transgenic mice expressing alpha2beta1 integrins under the involucrine promoter have previously been demonstrated, to various degrees, spontaneously develop a skin disorder resembling psoriasis. Herein, we show that a mild epidermal wounding induces a uniform acanthosis together with an influx of immune cells. The disease initiates as a normal wound healing process and is completely restored in wildtype mice by day 14. However, in the integrin transgenic mice a chronic inflammation develops, a process that can be compared to the Koebner phenomenon in psoriatic patients. In this study, we have followed the integrin transgenic mice for five weeks, where substantial keratinocyte hyper-proliferation, inflammatory infiltration and high cytokine levels within the skin can still be observed. In addition, draining lymph nodes were dramatically increased in size and contained highly activated T cells, as well as APCs secreting large amounts of pro-inflammatory cytokines. Furthermore, the systemic immune response was affected with increased spleen size, elevated cytokine levels in the serum and altered lymphocyte trafficking patterns, very much resembling what is seen in psoriasis patients. Finally, CD4(+) T cell depletion was not able to affect the onset or progression of skin inflammation. This suggests that altered keratinocyte differentiation and proliferation can drive a skin inflammation and cause chronic immune cell activation both at a local and systemic level.
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Affiliation(s)
- Ingrid Teige
- Dermatology Section, Department of Pharmacology, Discovery, LEO Pharma, Ballerup, Denmark
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Ortega C, Fernández-A S, Carrillo JM, Romero P, Molina IJ, Moreno JC, Santamaría M. IL-17-producing CD8+ T lymphocytes from psoriasis skin plaques are cytotoxic effector cells that secrete Th17-related cytokines. J Leukoc Biol 2009; 86:435-43. [PMID: 19487306 DOI: 10.1189/jlb.0109046] [Citation(s) in RCA: 189] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
IL-17-producing CD4+ T lymphocytes (Th17) are currently considered relevant participants in the pathogenesis of psoriasis skin lesions. However, little is known about the potential role of IL-17-producing CD8+ T cells, which are also present at the psoriatic plaque. We have addressed the functional characterization of this CD8+ subtype of T lymphocytes from psoriasis patients. Our results show that CD8+IL-17+ cells from psoriasis-inflamed skin tissue produce TNF-alpha and IFN-gamma (Th1-related cytokines) as well as IL-17, IL-21, and IL-22 (Th17-related cytokines) efficiently. A significant up-regulation of the RORC transcription factor is also observed. These cells are refractory to Tregs but show a proliferative response to anti-CD3/CD28 stimulation that is enhanced by IL-12 and IL-15. Blocking of TNF-alpha activity inhibits TCR-mediated activation and IL-17 production. CD8+IL-17+ T cells are cytotoxic cells that display TCR/CD3-mediated cytotoxic abilities to kill target cells. Thus, CD8+IL-17+ T cells share some key features with Th17 cells and exhibit remarkable differential abilities attributable to the CD8+ lineage of T lymphocytes, adding new insights into the functional resources of IL-17-producing cells from human epidermis that could be of potential interest to our understanding of the pathogenesis of psoriasis.
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Affiliation(s)
- Consuelo Ortega
- Unidad de Inmunología, Facultad de Medicina, Universidad de Córdoba, Córdoba, Spain
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van der Velden HMJ, van de Kerkhof PCM, Pasch MC, de Boer-van Huizen RT, van Lingen RG, van Erp PEJ. The universal detection of antigens from one skin biopsy specimen. J Cutan Pathol 2009; 36:972-9. [PMID: 19685571 DOI: 10.1111/j.1600-0560.2009.01209.x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
BACKGROUND Immunohistochemistry is an important tool in dermatology but is limited. Certain antigens can only be preserved in formalin-fixed paraffin-embedded sections, while others can only be detected on frozen sections, resulting in situations where two biopsies are needed. We aimed to develop a technique for universal detection of different antigens out of just one biopsy specimen. METHODS Single biopsies were obtained from lesional skin of patients with psoriasis. Standard sample procedures for frozen and paraffin-embedded sections were used. To convert frozen tissue into paraffin-embedded sections, the biopsy specimen was disposed of the embedding medium and subsequently fixed in 10% neutral buffered formalin. We applied various antigen retrieval techniques with alkaline solutions. The differential expression of keratin 10, keratin 15, CD3, CD26 and human beta defensin-2 (HBD-2) was examined using immunohistochemical staining. RESULTS We showed that keratin 10 and 15 can be stained on both frozen and paraffin-embedded sections. Staining of paraffin-embedded sections required unmasking with trypsin and Tris-buffered saline Tween solution, respectively. CD3 and CD26 can only be detected on frozen sections, while HBD-2 can only be detected on paraffin-embedded sections. CONCLUSION We have described a straightforward technique that gives us the opportunity to use just one biopsy specimen to obtain frozen sections as well as paraffin-embedded sections.
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Affiliation(s)
- Haike M J van der Velden
- Department of Dermatology, Radboud University Nijmegen Medical Centre, Nijmegen, the Netherlands.
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Zheng J, Liu Y, Qin G, Chan PL, Mao H, Lam KT, Lewis DB, Lau YL, Tu W. Efficient induction and expansion of human alloantigen-specific CD8 regulatory T cells from naive precursors by CD40-activated B cells. THE JOURNAL OF IMMUNOLOGY 2009; 183:3742-50. [PMID: 19684082 DOI: 10.4049/jimmunol.0901329] [Citation(s) in RCA: 54] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Although recent studies have focused on CD4(+) regulatory T cells (Treg), CD8(+) Treg have also been reported to play important roles in the induction and maintenance of immune tolerance. Adoptive transfer of CD8(+) Treg in rodents or induction of CD8(+) Treg in humans can prevent or treat allograft rejection and autoimmune diseases. However, no approaches have been reported for the generation of human Ag-specific CD8(+) Treg at a practical scale for clinical use. Here, we found that two novel CD8(+) T cell subsets with different levels of CD8 surface expression, CD8(high) and CD8(low), could be induced from naive CD8(+) precursors in vitro by allogeneic CD40-activated B cells, whereas only CD8(high) T cells were alloantigen-specific Treg with relatively poor alloantigen-specific cytotoxicity. Importantly, alloantigen-specific CD8(high) Treg could be induced and expanded from naive CD8(+)CD25(-) T cells at a large scale after 3 wk of culture without exogenous cytokines. These induced alloantigen-specific Treg were CD45RO(+) and CCR7(-) memory cells, and they expressed Foxp3, CD25, CD27, CD28, and CD62L. The induction and expansion of CD8(high) Treg by CD40-activated B cells were dependent on endogenously expressed IFN-gamma, IL-2, IL-4, and CTLA-4. This approach may facilitate the clinical application of CD8(+) Treg-based immunotherapy in transplantation and autoimmune diseases.
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Affiliation(s)
- Jian Zheng
- Department of Pediatrics and Adolescent Medicine, LKS Faculty of Medicine, University of Hong Kong, Hong Kong SAR, People's Republic of China
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van Lingen RG, de Jong EMGJ, Berends MAM, Seyger MMB, van Erp PEJ, van de Kerkhof PCM. Good clinical response to anti‐psoriatic treatment with adalimumab and methotrexate does not inflict a direct effect on compartmentalization of T‐cell subsets: A pilot study. J DERMATOL TREAT 2009; 19:284-7. [DOI: 10.1080/09546630801955358] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Peternel S, Kastelan M. Immunopathogenesis of psoriasis: focus on natural killer T cells. J Eur Acad Dermatol Venereol 2009; 23:1123-7. [PMID: 19453772 DOI: 10.1111/j.1468-3083.2009.03292.x] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Psoriasis is a common inflammatory skin disease triggered by dysregulated immune response and characterized by hyperproliferation and altered differentiation of keratinocytes. Formation of psoriatic lesions is thought to be elicited by the complex cellular and cytokine network arising from the pathogenic interactions between keratinocytes and components of innate and acquired immune system. Natural killer T (NKT) cells are a heterogenous T-cell lineage that has been implicated in the pathogenesis of various autoimmune diseases including psoriasis. Due to the numerous functions of NKT cells that link innate and adaptive immunity, their role in psoriasis is complex and still elusive. We summarize the currently available literature data on this issue and discuss the possible role of NKT cells in the immunopathogenesis of this autoimmune disease.
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Affiliation(s)
- S Peternel
- Department of Dermatovenereology, Clinical Hospital Center Rijeka, University of Rijeka, Rijeka, Croatia.
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Tobin AM, Maguire B, Enright H, Kirby B. The effects of phototherapy on the numbers of circulating natural killer cells and T lymphocytes in psoriasis. PHOTODERMATOLOGY PHOTOIMMUNOLOGY & PHOTOMEDICINE 2009; 25:109-10. [DOI: 10.1111/j.1600-0781.2009.00409.x] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Schmid-Ott G, Jaeger B, Boehm T, Langer K, Stephan M, Raap U, Werfel T. Immunological effects of stress in psoriasis. Br J Dermatol 2009; 160:782-5. [DOI: 10.1111/j.1365-2133.2008.09013.x] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Kleinschek MA, Boniface K, Sadekova S, Grein J, Murphy EE, Turner SP, Raskin L, Desai B, Faubion WA, de Waal Malefyt R, Pierce RH, McClanahan T, Kastelein RA. Circulating and gut-resident human Th17 cells express CD161 and promote intestinal inflammation. ACTA ACUST UNITED AC 2009; 206:525-34. [PMID: 19273624 PMCID: PMC2699125 DOI: 10.1084/jem.20081712] [Citation(s) in RCA: 363] [Impact Index Per Article: 24.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
The C-type lectin-like receptor CD161, which has recently been described to promote T cell expansion, is expressed on a discrete subset of human CD4 T cells. The function of such cells, however, has remained elusive. We now demonstrate that CD161+ CD4 T cells comprise a circulating and gut-resident T helper 17 (Th17) cell population. During Crohn's disease (CD), these CD161+ cells display an activated Th17 phenotype, as indicated by increased expression of interleukin (IL)-17, IL-22, and IL-23 receptor. CD161+ CD4 T cells from CD patients readily produce IL-17 and interferon γ upon stimulation with IL-23, whereas, in healthy subjects, priming by additional inflammatory stimuli such as IL-1β was required to enable IL-23–induced cytokine release. Circulating CD161+ Th17 cells are imprinted for gut homing, as indicated by high levels of CC chemokine receptor 6 and integrin β7 expression. Supporting their colitogenic phenotype, CD161+ Th17 cells were found in increased numbers in the inflammatory infiltrate of CD lesions and induced expression of inflammatory mediators by intestinal cells. Our data identify CD161+ CD4 T cells as a resting Th17 pool that can be activated by IL-23 and mediate destructive tissue inflammation.
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Balato A, Unutmaz D, Gaspari AA. Natural killer T cells: an unconventional T-cell subset with diverse effector and regulatory functions. J Invest Dermatol 2009; 129:1628-42. [PMID: 19262602 DOI: 10.1038/jid.2009.30] [Citation(s) in RCA: 107] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Natural killer T (NKT) cells are a unique subset of lymphocytes that express NK cell markers such as CD161 and CD94, as well as a T-cell receptor (TCR) alpha/beta, with a restricted repertoire, which distinguishes them from NK cells, which lack a TCR. In contrast to conventional T-lymphocytes, the TCR of NKT cells does not interact with that of peptide antigens presented by classical major histocompatibility complex-encoded class I or II molecules. Instead, this TCR recognizes glycolipids presented by CD1d, a non-classical antigen-presenting molecule. The rapid response of NKT cells to their cognate antigens is characteristic of an innate immune response, and allows the polarizing cytokines (IFN-gamma and/or IL-4) to regulate adaptive immunity. NKT cells have been found to be critical in the immune response against viral infections and malaria, as well as in tumor immunity, and certain autoimmune diseases. NKT cells have been assessed to represent the "trait d'union" between innate and adaptive immunity. They play an active role in skin diseases, such as contact sensitivity, which have been implicated in UV-induced immunosuppression and psoriasis. Thus, NKT-cells are emerging as an important subset of lymphocytes, with a protective role in host defense and a pathogenic role in certain immune-mediated disease states.
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Affiliation(s)
- Anna Balato
- Department of Dermatology, University of Naples Federico II, Naples, Italy
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Sanmiguel JC, Olaru F, Li J, Mohr E, Jensen LE. Interleukin-1 regulates keratinocyte expression of T cell targeting chemokines through interleukin-1 receptor associated kinase-1 (IRAK1) dependent and independent pathways. Cell Signal 2009; 21:685-94. [PMID: 19166933 DOI: 10.1016/j.cellsig.2009.01.005] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2008] [Revised: 12/19/2008] [Accepted: 01/02/2009] [Indexed: 01/10/2023]
Abstract
IL-1 is a potent pro-inflammatory cytokine that activates intracellular signaling cascades some of which may involve IL-1 receptor associated kinase-1 (IRAK1). Psoriasis is a T cell dependent chronic inflammatory condition of the skin of unknown cause. IL-1 has been implicated in psoriasis pathology, but the mechanism has not been elucidated. Interestingly, expression of IRAK1 is elevated in psoriatic skin. To identify a potential link between IL-1, keratinocytes and T cells in skin inflammation we employed pathway-focused microarrays to evaluate IL-1 dependent gene expression in keratinocytes. Several candidate mRNAs encoding known T cell chemoattractants were identified in primary keratinocytes and the stable keratinocyte cell line HaCaT. CCL5 and CCL20 mRNA and protein levels were confirmed up-regulated by IL-1 in concentration and time-dependent manners. Furthermore IL-1 synergized with IFN-gamma and TNF-alpha. Expression of CXCL9, CXCL10 and CXCL11 mRNAs was also increased in response to IL-1, but protein could only be detected in medium from cells treated with IFN-gamma alone or in combination with IL-1. Over-expression of IRAK1 led to increased constitutive and cytokine induced production of CCL5 and CCL20. Inhibition of IRAK1 activity through RNAi or expression of a dominant negative mutant blocked production of CCL5 and CCL20 but had no effect upon the IL-1 enhancement of IFN-gamma induced CXCL9, CXCL10 and CXCL11 production. In conclusion IL-1 regulates T cell targeting chemokine production in keratinocytes through IRAK1 dependent and independent pathways. These pathways may contribute to acute and chronic skin inflammation.
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Affiliation(s)
- Julio C Sanmiguel
- Department of Pharmacology, University of Pennsylvania School of Medicine, 89 John Morgan Building, 3620 Hamilton Walk, Philadelphia, PA 19104, USA
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