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Zhang X, Li X, Wang Y, Chen Y, Hu Y, Guo C, Yu Z, Xu P, Ding Y, Mi QS, Wu J, Gu J, Shi Y. Abnormal lipid metabolism in epidermal Langerhans cells mediates psoriasis-like dermatitis. JCI Insight 2022; 7:150223. [PMID: 35801590 PMCID: PMC9310522 DOI: 10.1172/jci.insight.150223] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2021] [Accepted: 05/25/2022] [Indexed: 11/17/2022] Open
Abstract
Psoriasis is a chronic, inflammatory skin disease, frequently associated with dyslipidemia. Lipid disturbance in psoriasis affects both circulatory system and cutaneous tissue. Epidermal Langerhans cells (LCs) are tissue-resident DCs that maintain skin immune surveillance and mediate various cutaneous disorders, including psoriasis. However, the role of LCs in psoriasis development and their lipid metabolic alternation remains unclear. Here, we demonstrate that epidermal LCs of psoriasis patients enlarge with longer dendrites and possess elevated IL-23p19 mRNA and a higher level of neutral lipids when compared with normal LCs of healthy individuals. Accordantly, epidermal LCs from imiquimod-induced psoriasis-like dermatitis in mice display overmaturation, enhanced phagocytosis, and excessive secretion of IL-23. Remarkably, these altered immune properties in lesional LCs are tightly correlated with elevated neutral lipid levels. Moreover, the increased lipid content of psoriatic LCs might result from impaired autophagy of lipids. Bulk RNA-Seq analysis identifies dysregulated genes involved in lipid metabolism, autophagy, and immunofunctions in murine LCs. Overall, our data suggest that dysregulated lipid metabolism influences LC immunofunction, which contributes to the development of psoriasis, and therapeutic manipulation of this metabolic process might provide an effective measurement for psoriasis.
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Affiliation(s)
- Xilin Zhang
- Department of Dermatology, Shanghai Skin Disease Hospital, School of Medicine, and.,Institute of Psoriasis, School of Medicine, Tongji University, Shanghai, China.,Department of Dermatology, Changhai Hospital, Second Military Medical University, Shanghai, China
| | - Xiaorui Li
- Department of Dermatology, Longhua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Yuanyuan Wang
- Department of Dermatology, Shanghai Skin Disease Hospital, School of Medicine, and.,Institute of Psoriasis, School of Medicine, Tongji University, Shanghai, China
| | - Youdong Chen
- Institute of Psoriasis, School of Medicine, Tongji University, Shanghai, China.,Department of Dermatology, Shanghai Tenth People's Hospital, School of Medicine, Tongji University, Shanghai, China
| | - Yijun Hu
- Department of Dermatology, Changhai Hospital, Second Military Medical University, Shanghai, China
| | - Chunyuan Guo
- Department of Dermatology, Shanghai Skin Disease Hospital, School of Medicine, and.,Institute of Psoriasis, School of Medicine, Tongji University, Shanghai, China
| | - Zengyang Yu
- Institute of Psoriasis, School of Medicine, Tongji University, Shanghai, China.,Department of Dermatology, Changhai Hospital, Second Military Medical University, Shanghai, China
| | - Peng Xu
- Institute of Psoriasis, School of Medicine, Tongji University, Shanghai, China.,Department of Dermatology, Shanghai Tenth People's Hospital, School of Medicine, Tongji University, Shanghai, China
| | - Yangfeng Ding
- Department of Dermatology, Shanghai Skin Disease Hospital, School of Medicine, and.,Institute of Psoriasis, School of Medicine, Tongji University, Shanghai, China
| | - Qing-Sheng Mi
- Center for Cutaneous Biology and Immunology, Department of Dermatology, and.,Immunology Research Program, Henry Ford Cancer Institute, Henry Ford Health System, Detroit, Michigan, USA
| | - Jianhua Wu
- Department of Dermatology, Changhai Hospital, Second Military Medical University, Shanghai, China
| | - Jun Gu
- Institute of Psoriasis, School of Medicine, Tongji University, Shanghai, China.,Department of Dermatology, Changhai Hospital, Second Military Medical University, Shanghai, China.,Department of Dermatology, Shanghai Tenth People's Hospital, School of Medicine, Tongji University, Shanghai, China
| | - Yuling Shi
- Department of Dermatology, Shanghai Skin Disease Hospital, School of Medicine, and.,Institute of Psoriasis, School of Medicine, Tongji University, Shanghai, China
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2
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Flora A, Frew JW. A case series of early biologic therapy in guttate psoriasis: Targeting resident memory T cell activity as a potential novel therapeutic modality. JAAD Case Rep 2022; 24:82-87. [PMID: 35647251 PMCID: PMC9136601 DOI: 10.1016/j.jdcr.2022.04.019] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2022] Open
Affiliation(s)
- Akshay Flora
- Department of Dermatology, Liverpool Hospital, Liverpool, Australia
- Faculty of Medicine, University of New South Wales, Sydney, Australia
- Laboratory of Translational Cutaneous Research, Ingham Institute of Applied Medical Research, Liverpool, Australia
| | - John W. Frew
- Department of Dermatology, Liverpool Hospital, Liverpool, Australia
- Faculty of Medicine, University of New South Wales, Sydney, Australia
- Laboratory of Translational Cutaneous Research, Ingham Institute of Applied Medical Research, Liverpool, Australia
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3
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Yan B, Liu N, Li J, Li J, Zhu W, Kuang Y, Chen X, Peng C. The role of Langerhans cells in epidermal homeostasis and pathogenesis of psoriasis. J Cell Mol Med 2020; 24:11646-11655. [PMID: 32916775 PMCID: PMC7579693 DOI: 10.1111/jcmm.15834] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2020] [Revised: 08/07/2020] [Accepted: 08/17/2020] [Indexed: 12/13/2022] Open
Abstract
The skin is the main barrier between the human body and the outside world, which not only plays the role of a physical barrier but also functions as the first line of defence of immunology. Langerhans cells (LCs), as dendritic cells (DC) that play an important role in the immune system, are mainly distributed in the epidermis. This review focuses on the role of these epidermal LCs in regulating skin threats (such as microorganisms, ultraviolet radiation and allergens), especially psoriasis. Since human and mouse skin DC subsets share common ontogenetic characteristics, we can further explore the role of LCs in psoriatic inflammation.
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Affiliation(s)
- Bei Yan
- The Department of Dermatology, Xiangya Hospital, Central South University, Changsha, China.,National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Changsha, China.,Hunan Key Laboratory of Skin Cancer and Psoriasis, Xiangya Hospital, Changsha, China.,Hunan Engineering Research Center of Skin Health and Disease, Xiangya Hospital, Changsha, China.,Xiangya Clinical Research Center for Cancer Immunotherapy, Central South University, Changsha, China
| | - Nian Liu
- The Department of Dermatology, Xiangya Hospital, Central South University, Changsha, China.,National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Changsha, China.,Hunan Key Laboratory of Skin Cancer and Psoriasis, Xiangya Hospital, Changsha, China.,Hunan Engineering Research Center of Skin Health and Disease, Xiangya Hospital, Changsha, China.,Xiangya Clinical Research Center for Cancer Immunotherapy, Central South University, Changsha, China
| | - Jie Li
- The Department of Dermatology, Xiangya Hospital, Central South University, Changsha, China.,National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Changsha, China.,Hunan Key Laboratory of Skin Cancer and Psoriasis, Xiangya Hospital, Changsha, China.,Hunan Engineering Research Center of Skin Health and Disease, Xiangya Hospital, Changsha, China.,Xiangya Clinical Research Center for Cancer Immunotherapy, Central South University, Changsha, China
| | - Jiaoduan Li
- The Department of Dermatology, Xiangya Hospital, Central South University, Changsha, China.,National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Changsha, China.,Hunan Key Laboratory of Skin Cancer and Psoriasis, Xiangya Hospital, Changsha, China.,Hunan Engineering Research Center of Skin Health and Disease, Xiangya Hospital, Changsha, China.,Xiangya Clinical Research Center for Cancer Immunotherapy, Central South University, Changsha, China
| | - Wu Zhu
- The Department of Dermatology, Xiangya Hospital, Central South University, Changsha, China.,National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Changsha, China.,Hunan Key Laboratory of Skin Cancer and Psoriasis, Xiangya Hospital, Changsha, China.,Hunan Engineering Research Center of Skin Health and Disease, Xiangya Hospital, Changsha, China.,Xiangya Clinical Research Center for Cancer Immunotherapy, Central South University, Changsha, China
| | - Yehong Kuang
- The Department of Dermatology, Xiangya Hospital, Central South University, Changsha, China.,National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Changsha, China.,Hunan Key Laboratory of Skin Cancer and Psoriasis, Xiangya Hospital, Changsha, China.,Hunan Engineering Research Center of Skin Health and Disease, Xiangya Hospital, Changsha, China.,Xiangya Clinical Research Center for Cancer Immunotherapy, Central South University, Changsha, China
| | - Xiang Chen
- The Department of Dermatology, Xiangya Hospital, Central South University, Changsha, China.,National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Changsha, China.,Hunan Key Laboratory of Skin Cancer and Psoriasis, Xiangya Hospital, Changsha, China.,Hunan Engineering Research Center of Skin Health and Disease, Xiangya Hospital, Changsha, China.,Xiangya Clinical Research Center for Cancer Immunotherapy, Central South University, Changsha, China
| | - Cong Peng
- The Department of Dermatology, Xiangya Hospital, Central South University, Changsha, China.,National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Changsha, China.,Hunan Key Laboratory of Skin Cancer and Psoriasis, Xiangya Hospital, Changsha, China.,Hunan Engineering Research Center of Skin Health and Disease, Xiangya Hospital, Changsha, China.,Xiangya Clinical Research Center for Cancer Immunotherapy, Central South University, Changsha, China
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4
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Genome-wide transcriptome analysis identifies alternative splicing regulatory network and key splicing factors in mouse and human psoriasis. Sci Rep 2018. [PMID: 29515135 PMCID: PMC5841439 DOI: 10.1038/s41598-018-22284-y] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
Abstract
Psoriasis is a chronic inflammatory disease that affects the skin, nails, and joints. For understanding the mechanism of psoriasis, though, alternative splicing analysis has received relatively little attention in the field. Here, we developed and applied several computational analysis methods to study psoriasis. Using psoriasis mouse and human datasets, our differential alternative splicing analyses detected hundreds of differential alternative splicing changes. Our analysis of conservation revealed many exon-skipping events conserved between mice and humans. In addition, our splicing signature comparison analysis using the psoriasis datasets and our curated splicing factor perturbation RNA-Seq database, SFMetaDB, identified nine candidate splicing factors that may be important in regulating splicing in the psoriasis mouse model dataset. Three of the nine splicing factors were confirmed upon analyzing the human data. Our computational methods have generated predictions for the potential role of splicing in psoriasis. Future experiments on the novel candidates predicted by our computational analysis are expected to provide a better understanding of the molecular mechanism of psoriasis and to pave the way for new therapeutic treatments.
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5
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Abstract
Psoriasis is a common skin disease that presents with well-demarcated patches of inflammation. Recurrent disease in fixed areas of the skin indicates a localized disease memory that is preserved in resolved lesions. In line with such concept, the involvement of tissue-resident immune cells in psoriasis pathology is increasingly appreciated. Langerhans cells (LCs) are perfectly placed to steer resident T cells and local tissue responses in psoriasis. Here, we present an overview of the current knowledge of LCs in human psoriasis, including findings that highlight pro-inflammatory features of LCs in psoriasis lesions. We also review the literature on conflicting data regarding LC localization and functionality in psoriasis. Our review highlights that further studies are needed to elucidate the molecular mechanisms that drive LCs functionality in inflammatory diseases.
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Affiliation(s)
- Liv Eidsmo
- Department of Medicine Solna, Karolinska Institutet, Solna, Sweden.,Department of Dermatology, Karolinska University Hospital, Stockholm, Sweden
| | - Elisa Martini
- Department of Medicine Solna, Karolinska Institutet, Solna, Sweden.,Department of Dermatology, Karolinska University Hospital, Stockholm, Sweden
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6
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Wolf P, Weger W, Patra V, Gruber-Wackernagel A, Byrne SN. Desired response to phototherapy vs photoaggravation in psoriasis: what makes the difference? Exp Dermatol 2018; 25:937-944. [PMID: 27376966 DOI: 10.1111/exd.13137] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/29/2016] [Indexed: 12/13/2022]
Abstract
Psoriasis commonly responds beneficially to UV radiation from natural sunlight or artificial sources. Therapeutic mechanisms include the proapoptotic and immunomodulating effects of UV, affecting many cells and involving a variety of pro- and anti-inflammatory cytokines, downregulating the Th17/IL-23 response with simultaneous induction of regulatory immune cells. However, exposure to UV radiation in a subset of psoriasis patients leads to exacerbation of the disease. We herein shed light on the predisposing factors of photosensitive psoriasis, including genetics (such as HLA-Cw*0602 or CARD14), gender and coexisting photodermatoses such as polymorphic light eruption (PLE) in the context of potential molecular mechanisms behind therapeutic photoresponsiveness or photoaggravation. UV-induced damage/pathogen-associated molecular patterns, damage to self-coding RNA (signalling through Toll-like receptors), certain antimicrobial peptides and/or inflammasome activation may induce innate immunity, leading to psoriasis at the site of UV exposure when there is concomitant, predisposing resistance against UV-induced suppression of the adaptive immune response (like in PLE) that otherwise would act to reduce psoriasis.
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Affiliation(s)
- Peter Wolf
- Research Unit for Photodermatology, Department of Dermatology, Medical University of Graz, Graz, Austria
| | - Wolfgang Weger
- Research Unit for Photodermatology, Department of Dermatology, Medical University of Graz, Graz, Austria
| | - VijayKumar Patra
- Research Unit for Photodermatology, Department of Dermatology, Medical University of Graz, Graz, Austria
| | | | - Scott N Byrne
- Cellular Photoimmunology Group, Infectious Diseases and Immunology, Sydney Medical School, Charles Perkins Centre, The University of Sydney, Sydney, NSW, Australia
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7
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Cheung KL, Jarrett R, Subramaniam S, Salimi M, Gutowska-Owsiak D, Chen YL, Hardman C, Xue L, Cerundolo V, Ogg G. Psoriatic T cells recognize neolipid antigens generated by mast cell phospholipase delivered by exosomes and presented by CD1a. J Exp Med 2016; 213:2399-2412. [PMID: 27670592 PMCID: PMC5068234 DOI: 10.1084/jem.20160258] [Citation(s) in RCA: 180] [Impact Index Per Article: 22.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2016] [Accepted: 08/22/2016] [Indexed: 12/13/2022] Open
Abstract
Psoriasis is a chronic inflammatory skin disease associated with a T helper 17 response. Yet, it has proved challenging to identify relevant peptide-based T cell antigens. Antigen-presenting Langerhans cells show a differential migration phenotype in psoriatic lesions and express constitutively high levels of CD1a, which presents lipid antigens to T cells. In addition, phospholipase A2 (PLA2) is highly expressed in psoriatic lesions and is known to generate neolipid skin antigens for recognition by CD1a-reactive T cells. In this study, we observed expression of a cytoplasmic PLA2 (PLA2G4D) in psoriatic mast cells but, unexpectedly, also found PLA2G4D activity to be extracellular. This was explained by IFN-α-induced mast cell release of exosomes, which transferred cytoplasmic PLA2 activity to neighboring CD1a-expressing cells. This led to the generation of neolipid antigens and subsequent recognition by lipid-specific CD1a-reactive T cells inducing production of IL-22 and IL-17A. Circulating and skin-derived T cells from patients with psoriasis showed elevated PLA2G4D responsiveness compared with healthy controls. Overall, these data present an alternative model of psoriasis pathogenesis in which lipid-specific CD1a-reactive T cells contribute to psoriatic inflammation. The findings suggest that PLA2 inhibition or CD1a blockade may have therapeutic potential for psoriasis.
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Affiliation(s)
- Ka Lun Cheung
- Medical Research Council Human Immunology Unit, National Institute for Health Research Biomedical Research Center, Radcliffe Department of Medicine, University of Oxford, Oxford OX3 9DS, England, UK
| | - Rachael Jarrett
- Medical Research Council Human Immunology Unit, National Institute for Health Research Biomedical Research Center, Radcliffe Department of Medicine, University of Oxford, Oxford OX3 9DS, England, UK
| | - Sumithra Subramaniam
- Medical Research Council Human Immunology Unit, National Institute for Health Research Biomedical Research Center, Radcliffe Department of Medicine, University of Oxford, Oxford OX3 9DS, England, UK
| | - Maryam Salimi
- Medical Research Council Human Immunology Unit, National Institute for Health Research Biomedical Research Center, Radcliffe Department of Medicine, University of Oxford, Oxford OX3 9DS, England, UK
| | - Danuta Gutowska-Owsiak
- Medical Research Council Human Immunology Unit, National Institute for Health Research Biomedical Research Center, Radcliffe Department of Medicine, University of Oxford, Oxford OX3 9DS, England, UK
| | - Yi-Ling Chen
- Medical Research Council Human Immunology Unit, National Institute for Health Research Biomedical Research Center, Radcliffe Department of Medicine, University of Oxford, Oxford OX3 9DS, England, UK
| | - Clare Hardman
- Medical Research Council Human Immunology Unit, National Institute for Health Research Biomedical Research Center, Radcliffe Department of Medicine, University of Oxford, Oxford OX3 9DS, England, UK
| | - Luzheng Xue
- Respiratory Medicine Unit, Nuffield Department of Medicine, University of Oxford, Oxford OX3 9DS, England, UK
| | - Vincenzo Cerundolo
- Medical Research Council Human Immunology Unit, National Institute for Health Research Biomedical Research Center, Radcliffe Department of Medicine, University of Oxford, Oxford OX3 9DS, England, UK
| | - Graham Ogg
- Medical Research Council Human Immunology Unit, National Institute for Health Research Biomedical Research Center, Radcliffe Department of Medicine, University of Oxford, Oxford OX3 9DS, England, UK
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Abstract
Psoriasis is a T-lymphocyte-mediated chronic inflammatory disorder involving the skin and joints. Nearly 3.5% of the population has been diagnosed to have psoriasis. In a dermatology department, almost one-third of psoriasis patients are in the pediatric age group. With an annual prevalence of up to 0.71%, childhood psoriasis can now be regarded as a frequently seen chronic inflammatory skin disorder having a significant impact on the quality of life. Based on the age of onset, psoriasis in children can be broadly classified as infantile psoriasis that can be mostly self-limited, psoriasis having an early onset, which needs specific treatment, and psoriasis that is associated with arthritis. Treating a child with psoriasis is a challenge, considering the physical development, body metabolism, rate of cutaneous absorption, and metabolism of drugs, which are quite different from those of the adults. The long duration of sun exposure for the rest of their life makes it more demanding while considering phototherapy in children. Long-term treatment of psoriasis, with phototherapy or drugs, needs critical evaluation in children. Hence, a thorough understanding of the disease in all its aspects will certainly help manage childhood psoriasis better. Timely diagnosis and adequate management not only arrest progression but also minimize the psychological burden caused by the disease, averting disfiguring states and evolution into a metabolic syndrome.
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Affiliation(s)
- Jayakar Thomas
- Department of Dermatology, Sree Balaji Medical College, Bharath University, Chennai, Tamil Nadu, India
| | - Kumar Parimalam
- Department of Dermatology, Villupuram Medical College, Villupuram, Tamil Nadu, India
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9
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Park GH, Chang SE, Bang S, Won KH, Won CH, Lee MW, Choi JH, Moon KC. Usefulness of Skin Explants for Histologic Analysis after Fractional Photothermolysis. Ann Dermatol 2015; 27:283-90. [PMID: 26082585 PMCID: PMC4466281 DOI: 10.5021/ad.2015.27.3.283] [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: 04/30/2013] [Revised: 05/29/2014] [Accepted: 10/12/2014] [Indexed: 11/22/2022] Open
Abstract
Background Fractional laser resurfacing treatment has been extensively investigated and is widely used. However, the mechanism underlying its effects is poorly understood because of the ethical and cosmetic problems of obtaining skin biopsies required to study the changes after laser treatment. Objective To evaluate the usefulness of human skin explants for the investigation of fractional photothermolysis. Methods Full-thickness discarded skin was treated in 4 ways: no treatment (control), fractional carbon dioxide laser, fractional Er:YAG laser, and fractional 1,550-nm erbium-doped fiber laser. Both treated and non-treated skin samples were cultured ex vivo at the air-medium interface for 7 days. Frozen tissue was sectioned and stained with hematoxylin & eosin for histologic examination and nitro blue tetrazolium chloride for viability testing. Results Skin explants cultured for up to 3 days exhibited histologic changes similar to those observed in in vivo studies, including microscopic treatment zones surrounded by a thermal coagulation zone, re-epithelialization, and formation of microscopic epidermal necrotic debris. However, the explant structure lost its original form within 7 days of culture. The viability of skin explants was maintained for 3 days of culture but was also lost within 7 days. Conclusion The skin explant model may be a useful tool for investigating the immediate or early changes following fractional photothermolysis, but further improvements are required to evaluate the long-term and dermal changes.
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Affiliation(s)
- Gyeong-Hun Park
- Department of Dermatology, Dongtan Sacred Heart Hospital, Hallym University College of Medicine, Hwaseong, Korea
| | - Sung Eun Chang
- Department of Dermatology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | | | - Kwang Hee Won
- Department of Dermatology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Chong Hyun Won
- Department of Dermatology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Mi Woo Lee
- Department of Dermatology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Jee Ho Choi
- Department of Dermatology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Kee Chan Moon
- Department of Dermatology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
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