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Zhou X, Zhou H, Luo X, Wu RF. Discovery of biomarkers in the psoriasis through machine learning and dynamic immune infiltration in three types of skin lesions. Front Immunol 2024; 15:1388690. [PMID: 38803495 PMCID: PMC11128609 DOI: 10.3389/fimmu.2024.1388690] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2024] [Accepted: 04/24/2024] [Indexed: 05/29/2024] Open
Abstract
Introduction Psoriasis is a chronic skin disease characterized by unique scaling plaques. However, during the acute phase, psoriatic lesions exhibit eczematous changes, making them difficult to distinguish from atopic dermatitis, which poses challenges for the selection of biological agents. This study aimed to identify potential diagnostic genes in psoriatic lesions and investigate their clinical significance. Methods GSE182740 datasets from the GEO database were analyzed for differential analysis; machine learning algorithms (SVM-RFE and LASSO regression models) are used to screen for diagnostic markers; CIBERSORTx is used to determine the dynamic changes of 22 different immune cell components in normal skin lesions, psoriatic non-lesional skin, and psoriatic lesional skin, as well as the expression of the diagnostic genes in 10 major immune cells, and real-time quantitative polymerase chain reaction (RT-qPCR) and immunohistochemistry are used to validate results. Results We obtained 580 differentially expressed genes (DEGs) in the skin lesion and non-lesion of psoriasis patients, 813 DEGs in mixed patients between non-lesions and lesions, and 96 DEGs in the skin lesion and non-lesion of atopic dermatitis, respectively. Then 144 specific DEGs in psoriasis via a Veen diagram were identified. Ultimately, UGGT1, CCNE1, MMP9 and ARHGEF28 are identified for potential diagnostic genes from these 144 specific DEGs. The value of the selected diagnostic genes was verified by receiver operating characteristic (ROC) curves with expanded samples. The the area under the ROC curve (AUC) exceeded 0.7 for the four diagnosis genes. RT-qPCR results showed that compared to normal human epidermis, the expression of UGGT1, CCNE1, and MMP9 was significantly increased in patients with psoriasis, while ARHGEF28 expression was significantly decreased. Notably, the results of CIBERSORTx showed that CCNE1 was highly expressed in CD4+ T cells and neutrophils, ARHGEF28 was also expressed in mast cells. Additionally, CCNE1 was strongly correlated with IL-17/CXCL8/9/10 and CCL20. Immunohistochemical results showed increased nuclear expression of CCNE1 in psoriatic epidermal cells relative to normal. Conclusion Based on the performance of the four genes in ROC curves and their expression in immune cells from patients with psoriasis, we suggest that CCNE1 possess higher diagnostic value.
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Affiliation(s)
- Xiao Zhou
- Department of Dermatology, The Second Xiangya Hospital of Central South University, Changsha, Hunan, China
| | - Han Zhou
- School of Mathematics and Statistics, Central South University, Changsha, Hunan, China
| | - Xin Luo
- Department of Dermatology, The Second Xiangya Hospital of Central South University, Changsha, Hunan, China
| | - Rui-Fang Wu
- Department of Dermatology, The Second Xiangya Hospital of Central South University, Changsha, Hunan, China
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Sieminska I, Pieniawska M, Grzywa TM. The Immunology of Psoriasis-Current Concepts in Pathogenesis. Clin Rev Allergy Immunol 2024:10.1007/s12016-024-08991-7. [PMID: 38642273 DOI: 10.1007/s12016-024-08991-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [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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3
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Vyas PJ, Wagh SS, Kalaskar MG, Patil KR, Sharma AK, Kazmi I, Al-Abbasi FA, Alzarea SI, Afzal O, Altamimi ASA, Gupta G, Patil CR. Volatile Oil Containing Plants as Phytopharmaceuticals to Treat Psoriasis: A Review. Curr Pharm Biotechnol 2024; 25:313-339. [PMID: 37287299 DOI: 10.2174/1389201024666230607140404] [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: 07/02/2022] [Revised: 03/09/2023] [Accepted: 03/20/2023] [Indexed: 06/09/2023]
Abstract
INTRODUCTION Psoriasis is a chronic skin condition caused by an autoimmune response that accelerates the life cycle of skin cells, resulting in the characteristic symptoms of scaling, inflammation, and itching. METHODS Palliative treatment options for psoriasis often prioritize the use of volatile oils. These oils contain monoterpenes, sesquiterpenes, and phenylpropanoids that are intricately linked to the molecular cascades involved in the pathogenesis and symptoms of psoriasis. To evaluate the antipsoriatic efficacy of volatile oils and their components, we conducted a systematic review of scientific studies. Our literature search encompassed various online databases, including PubMed, BIREME, SCIELO, Open Grey, Scopus, and ScienceDirect. The selected studies included experimental in vitro/in vivo assessments as well as clinical studies that examined the potential of volatile oils and their extracts as antipsoriatic agents. We excluded conference proceedings, case reports, editorials, and abstracts. Ultimately, we identified and evaluated a total of 12 studies for inclusion in our analysis. RESULTS The data collected, compiled, and analyzed strongly support the interaction between volatile oils and their constituents with the key molecular pathways involved in the pathogenesis of psoriasis and the development of its symptoms. Volatile oils play a significant role in the palliative treatment of psoriasis, while their chemical constituents have the potential to reduce the symptoms and recurrence of this condition. CONCLUSION The current review highlights that the constituents found in volatile oils offer distinct chemical frameworks that can be regarded as promising starting points for the exploration and development of innovative antipsoriatic agents.
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Affiliation(s)
- Priyanka J Vyas
- R. C. Patel Institute of Pharmaceutical Education and Research, Shirpur, District-Dhule, 425405, India
| | - Shivani S Wagh
- R. C. Patel Institute of Pharmaceutical Education and Research, Shirpur, District-Dhule, 425405, India
| | - Mohan G Kalaskar
- R. C. Patel Institute of Pharmaceutical Education and Research, Shirpur, District-Dhule, 425405, India
| | - Kalpesh R Patil
- R. C. Patel Institute of Pharmaceutical Education and Research, Shirpur, District-Dhule, 425405, India
| | - Ajay K Sharma
- Department of Pharmacognosy, School of Pharmaceutical Sciences, Delhi Pharmaceutical Sciences & Research University, New Delhi, 110017, India
| | - Imran Kazmi
- Department of Biochemistry, Faculty of Science, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Fahad A Al-Abbasi
- Department of Biochemistry, Faculty of Science, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Sami I Alzarea
- Department of Pharmacology, College of Pharmacy, Jouf University, Sakaka, Al-Jouf, Saudi Arabia
| | - Obaid Afzal
- Department of Pharmaceutical Chemistry, College of Pharmacy, Prince Sattam Bin Abdulaziz University, Al Kharj, 11942, Saudi Arabia
| | - Abdulmalik S A Altamimi
- Department of Pharmaceutical Chemistry, College of Pharmacy, Prince Sattam Bin Abdulaziz University, Al Kharj, 11942, Saudi Arabia
| | - Gaurav Gupta
- Department of Pharmacology, School of Pharmacy, Suresh Gyan Vihar University, Mahal Road, Jagatputa, Jaipur, India
- Department of Pharmacology, Saveetha Dental College, Saveetha University, Chennai, India
- Uttaranchal Institute of Pharmaceutical Sciences, Uttaranchal University, Dehradun, India
| | - Chandragouda R Patil
- Department of Pharmacognosy, School of Pharmaceutical Sciences, Delhi Pharmaceutical Sciences & Research University, New Delhi, 110017, India
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Duodu P, Sosa G, Canar J, Chhugani O, Gamero AM. Exposing the Two Contrasting Faces of STAT2 in Inflammation. J Interferon Cytokine Res 2022; 42:467-481. [PMID: 35877097 PMCID: PMC9527059 DOI: 10.1089/jir.2022.0117] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2022] [Accepted: 06/27/2022] [Indexed: 11/12/2022] Open
Abstract
Inflammation is a natural immune defense mechanism of the body's response to injury, infection, and other damaging triggers. Uncontrolled inflammation may become chronic and contribute to a range of chronic inflammatory diseases. Signal transducer and activator of transcription 2 (STAT2) is an essential transcription factor exclusive to type I and type III interferon (IFN) signaling pathways. Both pathways are involved in multiple biological processes, including powering the immune system as a means of controlling infection that must be tightly regulated to offset the development of persistent inflammation. While studies depict STAT2 as protective in promoting host defense, new evidence is accumulating that exposes the deleterious side of STAT2 when inappropriately regulated, thus prompting its reevaluation as a signaling molecule with detrimental effects in human disease. This review aims to provide a comprehensive summary of the findings based on literature regarding the inflammatory behavior of STAT2 in microbial infections, cancer, autoimmune, and inflammatory diseases. In conveying the extent of our knowledge of STAT2 as a proinflammatory mediator, the aim of this review is to stimulate further investigations into the role of STAT2 in diseases characterized by deregulated inflammation and the mechanisms responsible for triggering severe responses.
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Affiliation(s)
- Philip Duodu
- Department of Medical Genetics and Molecular Biochemistry, Lewis Katz School of Medicine, Temple University, Philadelphia, Pennsylvania, USA
| | - Geohaira Sosa
- Department of Medical Genetics and Molecular Biochemistry, Lewis Katz School of Medicine, Temple University, Philadelphia, Pennsylvania, USA
| | - Jorge Canar
- Department of Medical Genetics and Molecular Biochemistry, Lewis Katz School of Medicine, Temple University, Philadelphia, Pennsylvania, USA
| | - Olivia Chhugani
- Department of Medical Genetics and Molecular Biochemistry, Lewis Katz School of Medicine, Temple University, Philadelphia, Pennsylvania, USA
| | - Ana M. Gamero
- Department of Medical Genetics and Molecular Biochemistry, Lewis Katz School of Medicine, Temple University, Philadelphia, Pennsylvania, USA
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5
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Zhao P, Zhang J, Liu B, Tang Y, Wang L, Wang G, Wu H, Yang C, Li X, Li B. Causal Effects of Circulating Cytokines on the Risk of Psoriasis Vulgaris: A Mendelian Randomization Study. Front Genet 2022; 13:941961. [PMID: 35769988 PMCID: PMC9234291 DOI: 10.3389/fgene.2022.941961] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2022] [Accepted: 05/24/2022] [Indexed: 11/24/2022] Open
Abstract
Background: Psoriasis vulgaris is an inflammatory skin disease. Observational studies have shown associations between circulating cytokine levels and psoriasis vulgaris. But the causal relationship between circulating cytokine and psoriasis vulgaris remains elusive. Methods: To assess the causal effects of cytokine levels on the risk of psoriasis vulgaris and vice versa, we performed a two-sample Mendelian randomization (MR) study by using the inverse-variance weighted (IVW), weighted median, and Mendelian randomization pleiotropy residual sum and outlier (MR-PRESSO) in genome-wide association summary statistics of 41 circulating cytokines in up to 8,293 individuals and psoriasis vulgaris in 399,883 individuals. Results: We identified that increasing RANTES level induced an elevated risk of psoriasis vulgaris in IVW (β = 0.33, S.E. = 0.12, p = 0.006). This causal effect showed consistency across the weighted median (β = 0.35, S.E. = 0.15, p = 0.022) and MR-PRESSO method (β = 0.33, S.E. = 0.11, p = 0.028). Conclusions: Our results suggest a potential causal effect of elevated RANTES concentration on the increased risk of psoriasis vulgaris.
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6
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Li H, Wu M, Zhao X. Role of chemokine systems in cancer and inflammatory diseases. MedComm (Beijing) 2022; 3:e147. [PMID: 35702353 PMCID: PMC9175564 DOI: 10.1002/mco2.147] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2022] [Revised: 05/10/2022] [Accepted: 05/11/2022] [Indexed: 12/12/2022] Open
Abstract
Chemokines are a large family of small secreted proteins that have fundamental roles in organ development, normal physiology, and immune responses upon binding to their corresponding receptors. The primary functions of chemokines are to coordinate and recruit immune cells to and from tissues and to participate in regulating interactions between immune cells. In addition to the generally recognized antimicrobial immunity, the chemokine/chemokine receptor axis also exerts a tumorigenic function in many different cancer models and is involved in the formation of immunosuppressive and protective tumor microenvironment (TME), making them potential prognostic markers for various hematologic and solid tumors. In fact, apart from its vital role in tumors, almost all inflammatory diseases involve chemokines and their receptors in one way or another. Modulating the expression of chemokines and/or their corresponding receptors on tumor cells or immune cells provides the basis for the exploitation of new drugs for clinical evaluation in the treatment of related diseases. Here, we summarize recent advances of chemokine systems in protumor and antitumor immune responses and discuss the prevailing understanding of how the chemokine system operates in inflammatory diseases. In this review, we also emphatically highlight the complexity of the chemokine system and explore its potential to guide the treatment of cancer and inflammatory diseases.
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Affiliation(s)
- Hongyi Li
- Department of Gynecology and Obstetrics, Development and Related Disease of Women and Children Key Laboratory of Sichuan Province, Key Laboratory of Birth Defects and Related Diseases of Women and Children, Ministry of EducationWest China Second HospitalSichuan UniversityChengduChina
| | - Min Wu
- Department of Biomedical Sciences, School of Medicine and Health SciencesUniversity of North DakotaGrand ForksNorth DakotaUSA
| | - Xia Zhao
- Department of Gynecology and Obstetrics, Development and Related Disease of Women and Children Key Laboratory of Sichuan Province, Key Laboratory of Birth Defects and Related Diseases of Women and Children, Ministry of EducationWest China Second HospitalSichuan UniversityChengduChina
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7
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Kanayama Y, Torii K, Ikumi K, Morita A. Bath Psoralen Plus UVA Therapy Suppresses Keratinocyte-Derived Chemokines in Pathogenetically Relevant Cells. JID INNOVATIONS 2021; 1:100027. [PMID: 34909726 PMCID: PMC8659370 DOI: 10.1016/j.xjidi.2021.100027] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2021] [Revised: 04/14/2021] [Accepted: 05/04/2021] [Indexed: 11/28/2022] Open
Abstract
Psoriasis is a chronic inflammatory proliferative skin disease involving various types of chemokines regulating immune cell migration, localization, and activation. Bath psoralen plus UVA (PUVA) treatment is an established phototherapy for psoriasis, but its effects on chemokine levels remain unknown. We investigated the levels of 22 serum chemokines in 20 patients with psoriasis first treated with bath PUVA therapy between 2007 and 2011 in a single center and analyzed the associations between the chemokines and disease severity (PASI) before and after therapy to investigate the mechanisms of action of bath PUVA therapy. Before bath PUVA therapy, the PASI scores correlated with the serum levels of CCL17 (r = 0.581), CCL18 (r = 0.462), CCL19 (r = 0.477), and CXCL16 (r = 0.524). After bath PUVA, the serum levels of CCL17, CCL22, CXCL1, and CXCL9 were significantly decreased. Heatmap clustering and network analysis based on statistically significant Spearman correlations among the chemokines showed distinctive changes in the chemokine signature. Our findings revealed that the levels of several chemokines correlated with the disease state of psoriasis. Furthermore, bath PUVA therapy reduced the secretion of keratinocyte-derived chemokines that induce the migration of immune cells important for psoriasis pathogenesis, partly revealing the mechanism of the therapeutic activity.
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Affiliation(s)
- Yoshifumi Kanayama
- Department of Geriatric and Environmental Dermatology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - Kan Torii
- Department of Geriatric and Environmental Dermatology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - Kyoko Ikumi
- Department of Geriatric and Environmental Dermatology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - Akimichi Morita
- Department of Geriatric and Environmental Dermatology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
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8
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Gu H, Zhang Y, Zeng W, Xia Y. Participation of interferons in psoriatic inflammation. Cytokine Growth Factor Rev 2021; 64:12-20. [PMID: 34953718 DOI: 10.1016/j.cytogfr.2021.12.002] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2021] [Revised: 12/07/2021] [Accepted: 12/09/2021] [Indexed: 12/17/2022]
Abstract
Interferons are multifunctional cytokines not expressed in the skin under normal physiological conditions. However, they are overexpressed in serum and skin lesions of patients with psoriasis and play an important role in the pathogenesis of the disease. Interferons act directly on skin resident cells and recruit and modulate inflammatory cells, thereby exacerbating psoriatic inflammation. They upregulate the expression of relevant cytokines and chemokines, facilitate excessive proliferation of keratinocytes, and enhance the formation of poorly differentiated dermal microvessels. In this review, we summarized the pathogenic effect of interferons on psoriasis and also discussed the therapeutic strategies targeting interferons.
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Affiliation(s)
- Hanjiang Gu
- Department of Dermatology, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Yufei Zhang
- Department of Dermatology, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Weihui Zeng
- Department of Dermatology, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Yumin Xia
- Department of Dermatology, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China.
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Sigurgrimsdottir H, Bjornsdottir EO, Eysteinsdottir JH, Olafsson JH, Sigurgeirsson B, Agnarsson BA, Einarsdottir HK, Freysdottir J, Ludviksson BR. Keratinocytes secrete multiple inflammatory and immune biomarkers, which are regulated by LL‐37, in a psoriasis mimicking microenvironment. Scand J Immunol 2021; 94:e13096. [DOI: 10.1111/sji.13096] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2020] [Revised: 08/06/2021] [Accepted: 08/17/2021] [Indexed: 11/29/2022]
Affiliation(s)
- Hildur Sigurgrimsdottir
- Faculty of Medicine University of Iceland Reykjavík Iceland
- Department of Immunology Landspitali—the National University Hospital of Iceland Reykjavík Iceland
| | - Eva Osp Bjornsdottir
- Faculty of Medicine University of Iceland Reykjavík Iceland
- Department of Immunology Landspitali—the National University Hospital of Iceland Reykjavík Iceland
| | - Jenna Huld Eysteinsdottir
- Faculty of Medicine University of Iceland Reykjavík Iceland
- Department of Immunology Landspitali—the National University Hospital of Iceland Reykjavík Iceland
| | | | | | - Bjarni A. Agnarsson
- Department of Pathology Landspitali—the National University Hospital of Iceland Reykjavík Iceland
| | | | - Jona Freysdottir
- Faculty of Medicine University of Iceland Reykjavík Iceland
- Department of Immunology Landspitali—the National University Hospital of Iceland Reykjavík Iceland
| | - Bjorn Runar Ludviksson
- Faculty of Medicine University of Iceland Reykjavík Iceland
- Department of Immunology Landspitali—the National University Hospital of Iceland Reykjavík Iceland
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10
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Gallucci S, Meka S, Gamero AM. Abnormalities of the type I interferon signaling pathway in lupus autoimmunity. Cytokine 2021; 146:155633. [PMID: 34340046 DOI: 10.1016/j.cyto.2021.155633] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2021] [Accepted: 06/11/2021] [Indexed: 12/16/2022]
Abstract
Type I interferons (IFNs), mostly IFNα and IFNβ, and the type I IFN Signature are important in the pathogenesis of Systemic Lupus Erythematosus (SLE), an autoimmune chronic condition linked to inflammation. Both IFNα and IFNβ trigger a signaling cascade that, through the activation of JAK1, TYK2, STAT1 and STAT2, initiates gene transcription of IFN stimulated genes (ISGs). Noteworthy, other STAT family members and IFN Responsive Factors (IRFs) can also contribute to the activation of the IFN response. Aberrant type I IFN signaling, therefore, can exacerbate SLE by deregulated homeostasis leading to unnecessary persistence of the biological effects of type I IFNs. The etiopathogenesis of SLE is partially known and considered multifactorial. Family-based and genome wide association studies (GWAS) have identified genetic and transcriptional abnormalities in key molecules directly involved in the type I IFN signaling pathway, namely TYK2, STAT1 and STAT4, and IRF5. Gain-of-function mutations that heighten IFNα/β production, which in turn maintains type I IFN signaling, are found in other pathologies like the interferonopathies. However, the distinctive characteristics have yet to be determined. Signaling molecules activated in response to type I IFNs are upregulated in immune cell subsets and affected tissues of SLE patients. Moreover, Type I IFNs induce chromatin remodeling leading to a state permissive to transcription, and SLE patients have increased global and gene-specific epigenetic modifications, such as hypomethylation of DNA and histone acetylation. Epigenome wide association studies (EWAS) highlight important differences between SLE patients and healthy controls in Interferon Stimulated Genes (ISGs). The combination of environmental and genetic factors may stimulate type I IFN signaling transiently and produce long-lasting detrimental effects through epigenetic alterations. Substantial evidence for the pathogenic role of type I IFNs in SLE advocates the clinical use of neutralizing anti-type I IFN receptor antibodies as a therapeutic strategy, with clinical studies already showing promising results. Current and future clinical trials will determine whether drugs targeting molecules of the type I IFN signaling pathway, like non-selective JAK inhibitors or specific TYK2 inhibitors, may benefit people living with lupus.
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Affiliation(s)
- Stefania Gallucci
- Laboratory of Dendritic Cell Biology, Department of Microbiology and Immunology, Lewis Katz School of Medicine at Temple University, Philadelphia, PA, United States.
| | - Sowmya Meka
- Laboratory of Dendritic Cell Biology, Department of Microbiology and Immunology, Lewis Katz School of Medicine at Temple University, Philadelphia, PA, United States
| | - Ana M Gamero
- Department of Medical Genetics and Molecular Biochemistry, Lewis Katz School of Medicine at Temple University, Philadelphia, PA, United States; Fels Cancer Institute for Personalized Medicine, Lewis Katz School of Medicine at Temple University, Philadelphia, PA, United States
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11
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Yadav K, Singh D, Singh MR. Novel archetype in psoriasis management bridging molecular dynamics in exploring novel therapies. Eur J Pharmacol 2021; 907:174254. [PMID: 34118225 DOI: 10.1016/j.ejphar.2021.174254] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2021] [Revised: 06/04/2021] [Accepted: 06/07/2021] [Indexed: 12/21/2022]
Abstract
Psoriasis is an autoimmune chronic inflammatory condition of skin affecting 125 million populaces around the globe. It is implicated as a result of multifaceted phenomena involving various cell and subcell activities with the aid of numerous cellular and molecular components including signaling aisle and regulatory proteins owing to the development of such hyperproliferative dermatological conditions. This involves a deeply complex and conflicting pathology owing to genetic and immunological deviations resulting from the unusual presentation of different signaling pathways and regulatory proteins. Explorations of these biomarkers and intervention of molecular and cellular processes in psoriasis are yet to be investigated and could be an exceptional aspect for understanding pathology with successful targeting of disease. In the presented study, we have integrated molecular insights, including signaling molecules, pathways, and proteins implicated in pathogenesis, and we have attempted to link this knowledge to the targeting of these phenomena in order to manage the conditions precisely. Further, therapeutic delivery approaches for targeting distinct layers of skin have also been investigated based on the application of different nanocarriers for successful psoriasis treatment.
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Affiliation(s)
- Krishna Yadav
- University Institute of Pharmacy, Pt. Ravishankar Shukla University, Raipur, 492010, India
| | - Deependra Singh
- University Institute of Pharmacy, Pt. Ravishankar Shukla University, Raipur, 492010, India
| | - Manju Rawat Singh
- University Institute of Pharmacy, Pt. Ravishankar Shukla University, Raipur, 492010, India.
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12
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Simard M, Rioux G, Morin S, Martin C, Guérin SL, Flamand N, Julien P, Fradette J, Pouliot R. Investigation of Omega-3 Polyunsaturated Fatty Acid Biological Activity in a Tissue-Engineered Skin Model Involving Psoriatic Cells. J Invest Dermatol 2021; 141:2391-2401.e13. [PMID: 33857488 DOI: 10.1016/j.jid.2021.02.755] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2020] [Revised: 02/25/2021] [Accepted: 02/26/2021] [Indexed: 12/12/2022]
Abstract
Clinical studies have shown that diets enriched with omega-3 (also know as n-3) polyunsaturated fatty acids could relieve the symptoms of patients with psoriasis. However, the mechanisms involved remain poorly understood. The aim of this study was to investigate the effects of α-linolenic acid (ALA) on the proliferation and differentiation of psoriatic keratinocytes in a three-dimensional skin model. Skin models featuring healthy (healthy substitute) or psoriatic (psoriatic substitute) cells were engineered by the self-assembly method of tissue engineering using a culture medium supplemented with 10 μM ALA in comparison with the regular unsupplemented medium. ALA decreased keratinocyte proliferation and improved psoriatic substitute epidermal differentiation, as measured by decreased Ki67 staining and increased protein expression of FLG and loricrin. The added ALA was notably incorporated into the epidermal phospholipids and metabolized into long-chain n-3 polyunsaturated fatty acids, mainly eicosapentaenoic acid and n-3 docosapentaenoic acid. ALA supplementation led to increased levels of eicosapentaenoic acid derivatives (15-hydroxyeicosapentaenoic acid and 18-hydroxyeicosapentaenoic acid) as well as a decrease in levels of omega-6 (also know as n-6) polyunsaturated fatty acid lipid mediators (9-hydroxyoctadecadienoic acid, 12-hydroxyeicosatetraenoic acid, and leukotriene B4). Furthermore, the signal transduction mediators extracellular signal‒regulated kinases 1 and 2 were the kinases most activated after ALA supplementation. Taken together, these results show that ALA decreases the pathologic phenotype of psoriatic substitutes by normalizing keratinocyte proliferation and differentiation in vitro.
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Affiliation(s)
- Mélissa Simard
- Centre de Recherche en Organogénèse Expérimentale de l'Université Laval/LOEX, Québec, Québec, Canada; Axe médecine régénératrice, Centre de recherche du CHU de Québec-Université Laval, Québec, Québec, Canada; Faculté de pharmacie, Université Laval, Québec, Québec, Canada
| | - Geneviève Rioux
- Centre de Recherche en Organogénèse Expérimentale de l'Université Laval/LOEX, Québec, Québec, Canada; Axe médecine régénératrice, Centre de recherche du CHU de Québec-Université Laval, Québec, Québec, Canada; Faculté de pharmacie, Université Laval, Québec, Québec, Canada
| | - Sophie Morin
- Centre de Recherche en Organogénèse Expérimentale de l'Université Laval/LOEX, Québec, Québec, Canada; Axe médecine régénératrice, Centre de recherche du CHU de Québec-Université Laval, Québec, Québec, Canada; Faculté de pharmacie, Université Laval, Québec, Québec, Canada
| | - Cyril Martin
- Centre de recherche de l'institut universitaire de cardiologie et de pneumologie de Québec, Québec, Québec, Canada; Département de médecine, Faculté de médecine, Université Laval, Québec, Québec, Canada
| | - Sylvain L Guérin
- Centre de Recherche en Organogénèse Expérimentale de l'Université Laval/LOEX, Québec, Québec, Canada; Axe médecine régénératrice, Centre de recherche du CHU de Québec-Université Laval, Québec, Québec, Canada; CUO-Recherche, Centre de recherche du CHU de Québec-Université Laval, Québec, Québec, Canada; Département d'ophtalmologie, Faculté de médecine, Université Laval, Québec, Québec, Canada
| | - Nicolas Flamand
- Centre de recherche de l'institut universitaire de cardiologie et de pneumologie de Québec, Québec, Québec, Canada; Département de médecine, Faculté de médecine, Université Laval, Québec, Québec, Canada
| | - Pierre Julien
- Département de médecine, Faculté de médecine, Université Laval, Québec, Québec, Canada; Axe Endocrinologie et Néphrologie, Centre de recherche du CHU de Québec-Université Laval, Québec, Québec, Canada
| | - Julie Fradette
- Centre de Recherche en Organogénèse Expérimentale de l'Université Laval/LOEX, Québec, Québec, Canada; Axe médecine régénératrice, Centre de recherche du CHU de Québec-Université Laval, Québec, Québec, Canada; Département de chirurgie, Faculté de médecine, Université Laval, Québec, Québec, Canada
| | - Roxane Pouliot
- Centre de Recherche en Organogénèse Expérimentale de l'Université Laval/LOEX, Québec, Québec, Canada; Axe médecine régénératrice, Centre de recherche du CHU de Québec-Université Laval, Québec, Québec, Canada; Faculté de pharmacie, Université Laval, Québec, Québec, Canada.
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13
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Koster BD, López González M, van den Hout MF, Turksma AW, Sluijter BJ, Molenkamp BG, van Leeuwen PA, Vosslamber S, Scheper RJ, van den Eertwegh AJ, van den Tol MP, Jordanova EJ, de Gruijl TD. T cell infiltration on local CpG-B delivery in early-stage melanoma is predominantly related to CLEC9A +CD141 + cDC1 and CD14 + antigen-presenting cell recruitment. J Immunother Cancer 2021; 9:jitc-2020-001962. [PMID: 33737341 PMCID: PMC7978250 DOI: 10.1136/jitc-2020-001962] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/10/2021] [Indexed: 02/06/2023] Open
Abstract
Background We previously reported CpG-B injection at the primary tumor excision site prior to re-excision and sentinel node biopsy to result in immune activation of the sentinel lymph node (SLN), increased melanoma-specific CD8+ T cell rates in peripheral blood, and prolonged recurrence-free survival. Here, we assessed recruitment and activation of antigen-presenting cell (APC) subsets in the SLN and at the injection site in relation to T cell infiltration. Methods Re-excision skin specimens from patients with clinical stage I-II melanoma, collected 7 days after intradermal injection of either saline (n=10) or 8 mg CpG-B (CPG7909, n=12), were examined by immunohistochemistry, quantifying immune subsets in the epidermis, papillary, and reticular dermis. Counts were related to flow cytometric data from matched SLN samples. Additional in vitro cultures and transcriptional analyses on peripheral blood mononuclear cells (PBMCs) were performed to ascertain CpG-induced APC activation and chemokine profiles. Results Significant increases in CD83+, CD14+, CD68+, and CD123+ APC were observed in the reticular dermis of CpG-B-injected skin samples. Fluorescent double/triple staining revealed recruitment of both CD123+BDCA2+ plasmacytoid dendritic cells (DCs) and BDCA3/CD141+CLEC9A+ type-1 conventional DC (cDC1), of which only the cDC1 showed considerable levels of CD83 expression. Simultaneous CpG-B-induced increases in T cell infiltration were strongly correlated with both cDC1 and CD14 counts. Moreover, cDC1 and CD14+ APC rates in the reticular dermis and matched SLN suspensions were positively correlated. Flow cytometric, transcriptional, and chemokine release analyses of PBMC, on in vitro or in vivo exposure to CpG-B, indicate a role for the activation and recruitment of both cDC1 and CD14+ monocyte-derived APCs in the release of CXCL10 and subsequent T cell infiltration. Conclusion The CpG-B-induced concerted recruitment of cDC1 and CD14+ APC to the injection site and its draining lymph nodes may allow for both the (cross-)priming of T cells and their subsequent homing to effector sites.
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Affiliation(s)
- Bas D Koster
- Department of Medical Oncology, Amsterdam University Medical Centers, Vrije Universiteit, Cancer Center Amsterdam, Amsterdam, The Netherlands
| | - Marta López González
- Department of Medical Oncology, Amsterdam University Medical Centers, Vrije Universiteit, Cancer Center Amsterdam, Amsterdam, The Netherlands
| | - Mari Fcm van den Hout
- Department of Medical Oncology, Amsterdam University Medical Centers, Vrije Universiteit, Cancer Center Amsterdam, Amsterdam, The Netherlands.,Department of Pathology, Amsterdam University Medical Centers, Vrije Universiteit, Cancer Center Amsterdam, Amsterdam, The Netherlands
| | - Annelies W Turksma
- Department of Pathology, Amsterdam University Medical Centers, Vrije Universiteit, Cancer Center Amsterdam, Amsterdam, The Netherlands
| | - Berbel Jr Sluijter
- Department of Surgical Oncology, Amsterdam University Medical Centers, Vrije Universiteit, Cancer Center Amsterdam, Amsterdam, The Netherlands
| | - Barbara G Molenkamp
- Department of Surgical Oncology, Amsterdam University Medical Centers, Vrije Universiteit, Cancer Center Amsterdam, Amsterdam, The Netherlands
| | - Paul Am van Leeuwen
- Department of Surgical Oncology, Amsterdam University Medical Centers, Vrije Universiteit, Cancer Center Amsterdam, Amsterdam, The Netherlands
| | - Saskia Vosslamber
- Department of Pathology, Amsterdam University Medical Centers, Vrije Universiteit, Cancer Center Amsterdam, Amsterdam, The Netherlands
| | - Rik J Scheper
- Department of Pathology, Amsterdam University Medical Centers, Vrije Universiteit, Cancer Center Amsterdam, Amsterdam, The Netherlands
| | - Alfons Jm van den Eertwegh
- Department of Medical Oncology, Amsterdam University Medical Centers, Vrije Universiteit, Cancer Center Amsterdam, Amsterdam, The Netherlands
| | - M Petrousjka van den Tol
- Department of Surgical Oncology, Amsterdam University Medical Centers, Vrije Universiteit, Cancer Center Amsterdam, Amsterdam, The Netherlands
| | - Ekaterina J Jordanova
- Department of Medical Oncology, Amsterdam University Medical Centers, Vrije Universiteit, Cancer Center Amsterdam, Amsterdam, The Netherlands.,Center for Gynecological Oncology Amsterdam (CGOA), Amsterdam University Medical Centers, Vrije Universiteit, Cancer Center Amsterdam, Amsterdam, The Netherlands
| | - Tanja D de Gruijl
- Department of Medical Oncology, Amsterdam University Medical Centers, Vrije Universiteit, Cancer Center Amsterdam, Amsterdam, The Netherlands
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14
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Sun Y, Chen LH, Lu YS, Chu HT, Wu Y, Gao XH, Chen HD. Identification of novel candidate genes in rosacea by bioinformatic methods. Cytokine 2021; 141:155444. [PMID: 33529888 DOI: 10.1016/j.cyto.2021.155444] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2020] [Revised: 12/23/2020] [Accepted: 01/13/2021] [Indexed: 12/16/2022]
Abstract
BACKGROUND Rosacea is a chronic inflammatory skin disease whose psychological consequences severely affect patient's quality of life. OBJECTIVE To identify candidate genes of rosacea for potential development of new target therapies. METHODS Gene Expression Omnibus datasets were retrieved to obtain differentially expressed genes (DEGs) between rosacea patients and healthy controls. Gene ontology (GO) analyses were used to identify functions of candidate genes. Related signaling pathways of DEGs were analyzed using Kyoto Encyclopedia of Genes and Genomes (KEGG) and gene set enrichment analysis. Protein-protein interaction (PPI) networks were applied using search tools for the retrieval of interacting genes/proteins and modulations involving PPI networks were evaluated with use of the MCODE app. RESULTS Samples from 19 rosacea patients and 10 healthy controls of dataset GSE65914 were enrolled. A total of 215 DEGs, 115 GO terms and 6 KEGG pathways were identified. A total of 182 nodes and 456 edges were enriched in PPI networks. Maximal clusters showed 15 central nodes and 96 edges. The toll-like receptor (TLR) signaling pathway was the most significant pathway detected and 5 DEGs were identified as candidate genes which included TLR2, C-C motif chemokine (CCL) 5, C-X-C motif chemokine ligand (CXCL) 9, CXCL10 and CXCL11. The results were verified in rosacea patients with use of real-time polymerase chain reaction and immunohistochemistry. Cell-type enrichment analysis revealed 8 lymphocytes that were enriched in rosacea patients. CONCLUSIONS The results suggest that both innate and adaptive immune responses were involved in the etiology of rosacea. Five DEGs in the TLR signaling pathway may serve as potential therapeutic target genes.
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Affiliation(s)
- Yan Sun
- Department of Dermatology, The First Hospital of China Medical University, Shenyang 110001, China
| | - Liang-Hong Chen
- Department of Emergency Medicine, Shengjing Hospital of China Medical University, Shenyang 110004, China
| | - Yan-Song Lu
- Department of Dermatology, The First Hospital of China Medical University, Shenyang 110001, China
| | - Hai-Tao Chu
- Department of Dermatology, The First Hospital of China Medical University, Shenyang 110001, China
| | - Yan Wu
- Department of Dermatology, The First Hospital of China Medical University, Shenyang 110001, China.
| | - Xing-Hua Gao
- Department of Dermatology, The First Hospital of China Medical University, Shenyang 110001, China
| | - Hong-Duo Chen
- Department of Dermatology, The First Hospital of China Medical University, Shenyang 110001, China
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15
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Chen Z, Wang Y, Zhao J, Zhou D, Lv J, Zhang G, Di T, Li P. A study on the pathogenesis of blood-heat psoriasis with transcriptome analysis. ANNALS OF TRANSLATIONAL MEDICINE 2020; 8:1523. [PMID: 33313268 PMCID: PMC7729302 DOI: 10.21037/atm-20-7137] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Background Most existing studies on psoriasis' pathogenesis have focused on collecting epithelial cell gene sequences from psoriasis patients and normal subjects. In this paper, for the first time, high-throughput microarray was used to study the differential expression of genes in venous blood between patients with blood-heat psoriasis and normal subjects, providing theoretical support for studying the pathogenesis of blood-heat psoriasis. Methods Peripheral venous blood was collected from ten patients with blood-heat psoriasis and ten healthy volunteers for high-throughput microarray. The mRNAs, lncRNAs, and circRNAs related to blood-heat psoriasis were selected by analyzing the transcriptome microarray results. Then gene ontology (GO) analysis and KEGG signaling pathway analysis were used to explore further the biological functions of these mRNAs, lncRNAs, and circRNAs in blood-heat pathogenesis psoriasis. Network pharmacology was used to analyze the protein-protein interaction (PPI) network of the genes with differential expression, and the core genes to transmit information were obtained. Results A total of 205 circRNAs, 393 lncRNAs, and 157 mRNAs with differential expression associated with psoriasis were selected using high-throughput microarray. GO analysis showed these mRNAs, lncRNAs, and circRNAs were mainly enriched in cellular processes, biological regulation, ribosome formation, and negative regulation of protein binding. However, KEGG enrichment analysis suggested they were mainly enriched in autoimmunity pathways, lipid metabolism, translation, and signal transduction. PPI network analysis of mRNAs with significant difference revealed 11 core genes that transmitted information in psoriasis primarily. Conclusions The mRNAs, lncRNAs, and circRNAs with differential expression related to the pathogenesis of blood-heat psoriasis were found using high-throughput microarray for the first time. And the mRNAs, lncRNAs, and circRNAs with potential regulatory functions related to blood-heat psoriasis were then screened by bioinformatics analysis, effectively providing a new research entry point to the pathogenesis of blood-heat psoriasis.
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Affiliation(s)
- Zhaoxia Chen
- Beijing Hospital of Traditional Chinese Medicine, Capital Medical University, Beijing, China.,Beijing Institute of Traditional Chinese Medicine, Beijing, China.,Beijing Key Laboratory of Clinic and Basic Research with Traditional Chinese Medicine on Psoriasis, Beijing, China
| | - Yan Wang
- Beijing Hospital of Traditional Chinese Medicine, Capital Medical University, Beijing, China.,Beijing Institute of Traditional Chinese Medicine, Beijing, China.,Beijing Key Laboratory of Clinic and Basic Research with Traditional Chinese Medicine on Psoriasis, Beijing, China
| | - Jingxia Zhao
- Beijing Hospital of Traditional Chinese Medicine, Capital Medical University, Beijing, China.,Beijing Institute of Traditional Chinese Medicine, Beijing, China.,Beijing Key Laboratory of Clinic and Basic Research with Traditional Chinese Medicine on Psoriasis, Beijing, China
| | - Dongmei Zhou
- Beijing Hospital of Traditional Chinese Medicine, Capital Medical University, Beijing, China.,Beijing Key Laboratory of Clinic and Basic Research with Traditional Chinese Medicine on Psoriasis, Beijing, China
| | - Jingjing Lv
- Beijing Hospital of Traditional Chinese Medicine, Capital Medical University, Beijing, China.,Beijing Key Laboratory of Clinic and Basic Research with Traditional Chinese Medicine on Psoriasis, Beijing, China
| | - Guangzhong Zhang
- Beijing Hospital of Traditional Chinese Medicine, Capital Medical University, Beijing, China.,Beijing Key Laboratory of Clinic and Basic Research with Traditional Chinese Medicine on Psoriasis, Beijing, China
| | - Tingting Di
- Beijing Hospital of Traditional Chinese Medicine, Capital Medical University, Beijing, China.,Beijing Institute of Traditional Chinese Medicine, Beijing, China.,Beijing Key Laboratory of Clinic and Basic Research with Traditional Chinese Medicine on Psoriasis, Beijing, China
| | - Ping Li
- Beijing Hospital of Traditional Chinese Medicine, Capital Medical University, Beijing, China.,Beijing Institute of Traditional Chinese Medicine, Beijing, China.,Beijing Key Laboratory of Clinic and Basic Research with Traditional Chinese Medicine on Psoriasis, Beijing, China
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16
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Changes in the Physicochemical Properties of Blood and Skin Cell Membranes as a Result of Psoriasis Vulgaris and Psoriatic Arthritis Development. Int J Mol Sci 2020; 21:ijms21239129. [PMID: 33266237 PMCID: PMC7731289 DOI: 10.3390/ijms21239129] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2020] [Revised: 11/29/2020] [Accepted: 11/30/2020] [Indexed: 12/13/2022] Open
Abstract
Psoriasis is accompanied by disturbed redox homeostasis, with systemic and local oxidative stress promoting the modification of basic components of cellular membranes. Therefore, the aim of the study was to investigate the effect of development of psoriasis vulgaris and psoriatic arthritis on the composition and physicochemical properties of skin cell membranes (keratinocytes and fibroblasts) and blood cells (lymphocytes, granulocytes and erythrocytes). Both forms of psoriasis are characterized by decreased levels and changes in the localization of membrane phospholipids, and an increased level of sialic acid as well as the lipid peroxidation product (malondialdehyde), which resulted in an increase in the zeta potential of skin cells and blood cells, with granulocytes and lymphocytes affected more than erythrocytes. Using theoretical equations and the dependence of the cell membrane surface charge density as a function of pH, it was shown that patients with psoriatic arthritis have a greater increase in the concentration of negatively charged groups on the membrane surface and reduced the value of the association constant with H+ compared to patients with psoriasis vulgaris. Therefore, it can be suggested that the physicochemical parameters of membranes, skin and blood cells, especially lymphocytes, can be used to assess the severity of the disease.
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17
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Patel PM, Jones VA, Kridin K, Amber KT. The role of Dipeptidyl Peptidase-4 in cutaneous disease. Exp Dermatol 2020; 30:304-318. [PMID: 33131073 DOI: 10.1111/exd.14228] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2020] [Revised: 09/21/2020] [Accepted: 10/26/2020] [Indexed: 12/14/2022]
Abstract
Dipeptidyl peptidase-4 (DPP4) is a multifunctional, transmembrane glycoprotein present on the cell surface of various tissues. It is present in multiple molecular forms including cell surface and soluble. The role of DPP4 and its inhibition in cutaneous dermatoses have been a recent point of investigation. DPP4 exerts a notable influence on T-cell biology, the induction of skin-specific lymphocytes, and the homeostasis between regulatory and effector T cells. Moreover, DPP4 interacts with a broad range of molecules, including adenosine deaminase, caveolin-1, CXCR4 receptor, M6P/insulin-like growth factor II-receptor and fibroblast activation protein-α, triggering downstream effects that modulate the immune response, cell adhesion and chemokine activity. DPP4 expression on melanocytes, keratinocytes and fibroblasts further alters cell function and, thus, has crucial implications in cutaneous pathology. As a result, DPP4 plays a significant role in bullous pemphigoid, T helper type 1-like reactions, cutaneous lymphoma, melanoma, wound healing and fibrotic disorders. This review illustrates the multifactorial role of DPP4 expression, regulation, and inhibition in cutaneous diseases.
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Affiliation(s)
- Payal M Patel
- Department of Dermatology, University of Illinois at Chicago, Chicago, IL, USA
| | - Virginia A Jones
- Department of Dermatology, University of Illinois at Chicago, Chicago, IL, USA
| | - Khalaf Kridin
- Department of Dermatology, University of Lübeck, Lübeck, Germany
| | - Kyle T Amber
- Department of Dermatology, University of Illinois at Chicago, Chicago, IL, USA
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18
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Reduced Proteasome Activity and Enhanced Autophagy in Blood Cells of Psoriatic Patients. Int J Mol Sci 2020; 21:ijms21207608. [PMID: 33066703 PMCID: PMC7589048 DOI: 10.3390/ijms21207608] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2020] [Revised: 10/09/2020] [Accepted: 10/12/2020] [Indexed: 02/06/2023] Open
Abstract
Psoriasis is a skin disease that is accompanied by oxidative stress resulting in modification of cell components, including proteins. Therefore, we investigated the relationship between the intensity of oxidative stress and the expression and activity of the proteasomal system as well as autophagy, responsible for the degradation of oxidatively modified proteins in the blood cells of patients with psoriasis. Our results showed that the caspase-like, trypsin-like, and chymotrypsin-like activity of the 20S proteasome in lymphocytes, erythrocytes, and granulocytes was lower, while the expression of constitutive proteasome and immunoproteasome subunits in lymphocytes was increased cells of psoriatic patients compared to healthy subjects. Conversely, the expression of constitutive subunits in erythrocytes, and both constitutive and immunoproteasomal subunits in granulocytes were reduced. However, a significant increase in the autophagy flux (assessed using LC3BII/LC3BI ratio) independent of the AKT pathway was observed. The levels of 4-HNE, 4-HNE-protein adducts, and proteins carbonyl groups were significantly higher in the blood cells of psoriatic patients. The decreased activity of the 20S proteasome together with the increased autophagy and the significantly increased level of proteins carbonyl groups and 4-HNE-protein adducts indicate a proteostatic imbalance in the blood cells of patients with psoriasis.
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19
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Exploring the wound healing, anti-inflammatory, anti-pathogenic and proteomic effects of lactic acid bacteria on keratinocytes. Sci Rep 2020; 10:11572. [PMID: 32665600 PMCID: PMC7360600 DOI: 10.1038/s41598-020-68483-4] [Citation(s) in RCA: 48] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2020] [Accepted: 06/25/2020] [Indexed: 12/26/2022] Open
Abstract
The topical application of lactic acid bacteria (LAB) is recognized as a useful approach to improve skin health. This work aims to characterize by a multidisciplinary approach, the wound healing, anti-inflammatory, anti-pathogens and proteomic effects of six LAB lysates, belonging to the genus Lactobacillus. Our results demonstrated that the lysates of tested LAB stimulated the proliferation of keratinocytes, and that L. plantarum SGL 07 and L. salivarius SGL 19 accelerated the re-epithelization by inducing keratinocyte migration. The bacterial lysates also reduced the secretion of specific pro-inflammatory mediators from keratinocytes. Furthermore, viable L. salivarius SGL 19 and L. fermentum SGL 10 had anti-pathogenic effects against S. aureus and S. pyogenes, while L. brevis SGL 12 and L. paracasei SGL 04 inhibited S. aureus and S. pyogenes, respectively. The tested lactobacilli lysates also induced specific proteome modulation of the exposed keratinocytes, involving dysregulation of proteins (such as interleukin enhancer-binding factor 2 and ATP-dependent RNA helicase) and pathways (such as cytokine, NF-kB, Hedgehog, and RUNX signaling) associated with their specific wound healing and anti-inflammatory effects. This study indicates the different potential of selected lactobacilli, suggesting that they may be successfully used in the future together with conventional therapies to bring relief from skin disorders.
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20
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Lee D, Seo Y, Kim YW, Kim S, Choi J, Moon SH, Bae H, Kim HS, Kim H, Kim JH, Kim TY, Kim E, Yim S, Lim I, Bang H, Kim JH, Ko JH. Profiling of remote skeletal muscle gene changes resulting from stimulation of atopic dermatitis disease in NC/Nga mouse model. THE KOREAN JOURNAL OF PHYSIOLOGY & PHARMACOLOGY : OFFICIAL JOURNAL OF THE KOREAN PHYSIOLOGICAL SOCIETY AND THE KOREAN SOCIETY OF PHARMACOLOGY 2019; 23:367-379. [PMID: 31496874 PMCID: PMC6717787 DOI: 10.4196/kjpp.2019.23.5.367] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/29/2019] [Revised: 07/07/2019] [Accepted: 07/09/2019] [Indexed: 01/22/2023]
Abstract
Although atopic dermatitis (AD) is known to be a representative skin disorder, it also affects the systemic immune response. In a recent study, myoblasts were shown to be involved in the immune regulation, but the roles of muscle cells in AD are poorly understood. We aimed to identify the relationship between mitochondria and atopy by genome-wide analysis of skeletal muscles in mice. We induced AD-like symptoms using house dust mite (HDM) extract in NC/Nga mice. The transcriptional profiles of the untreated group and HDM-induced AD-like group were analyzed and compared using microarray, differentially expressed gene and functional pathway analyses, and protein interaction network construction. Our microarray analysis demonstrated that immune response-, calcium handling-, and mitochondrial metabolism-related genes were differentially expressed. In the Kyoto Encyclopedia of Genes and Genomes (KEGG) and Gene Ontology pathway analyses, immune response pathways involved in cytokine interaction, nuclear factor-kappa B, and T-cell receptor signaling, calcium handling pathways, and mitochondria metabolism pathways involved in the citrate cycle were significantly upregulated. In protein interaction network analysis, chemokine family-, muscle contraction process-, and immune response-related genes were identified as hub genes with many interactions. In addition, mitochondrial pathways involved in calcium signaling, cardiac muscle contraction, tricarboxylic acid cycle, oxidation-reduction process, and calcium-mediated signaling were significantly stimulated in KEGG and Gene Ontology analyses. Our results provide a comprehensive understanding of the genome-wide transcriptional changes of HDM-induced AD-like symptoms and the indicated genes that could be used as AD clinical biomarkers.
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Affiliation(s)
- Donghee Lee
- Department of Physiology, Chung-Ang University College of Medicine, Seoul 06974, Korea
| | - Yelim Seo
- Department of Physiology, Chung-Ang University College of Medicine, Seoul 06974, Korea
| | - Young-Won Kim
- Department of Physiology, Chung-Ang University College of Medicine, Seoul 06974, Korea
| | - Seongtae Kim
- Department of Physiology, Chung-Ang University College of Medicine, Seoul 06974, Korea
| | - Jeongyoon Choi
- Department of Physiology, Chung-Ang University College of Medicine, Seoul 06974, Korea
| | - Sung-Hee Moon
- Department of Physiology, Chung-Ang University College of Medicine, Seoul 06974, Korea
| | - Hyemi Bae
- Department of Physiology, Chung-Ang University College of Medicine, Seoul 06974, Korea
| | - Hui-Sok Kim
- Department of Medicine, Chung-Ang University College of Medicine, Seoul 06974, Korea
| | - Hangyeol Kim
- Department of Medicine, Chung-Ang University College of Medicine, Seoul 06974, Korea
| | - Jae-Hyun Kim
- Department of Medicine, Chung-Ang University College of Medicine, Seoul 06974, Korea
| | - Tae-Young Kim
- Department of Medicine, Chung-Ang University College of Medicine, Seoul 06974, Korea
| | - Eunho Kim
- Department of Medicine, Chung-Ang University College of Medicine, Seoul 06974, Korea
| | - Suemin Yim
- Department of Medicine, Chung-Ang University College of Medicine, Seoul 06974, Korea
| | - Inja Lim
- Department of Physiology, Chung-Ang University College of Medicine, Seoul 06974, Korea
| | - Hyoweon Bang
- Department of Physiology, Chung-Ang University College of Medicine, Seoul 06974, Korea
| | - Jung-Ha Kim
- Department of Family Medicine, Chung-Ang University Hospital, Chung-Ang University College of Medicine, Seoul 06973, Korea
| | - Jae-Hong Ko
- Department of Physiology, Chung-Ang University College of Medicine, Seoul 06974, Korea
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21
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Yan J, Song J, Qiao M, Zhao X, Li R, Jiao J, Sun Q. Long noncoding RNA expression profile and functional analysis in psoriasis. Mol Med Rep 2019; 19:3421-3430. [PMID: 30816535 PMCID: PMC6471922 DOI: 10.3892/mmr.2019.9993] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2018] [Accepted: 11/26/2018] [Indexed: 12/12/2022] Open
Abstract
Long noncoding RNAs (lncRNAs) serve important roles in the biology of autoimmune diseases and immune-associated disorders. To identify lncRNAs specifically associated with psoriasis, the expression of lncRNAs from biopsies obtained from patients with psoriasis were compared with samples obtained from healthy volunteers using a microarray. Reverse transcription-quantitative polymerase chain reaction (RT-qPCR) was performed to detect the expression of 10 identified dysregulated lncRNAs. Cis- and trans-regulated target genes of lncRNAs were predicted. The results of microarray analysis indicated that 2,194 lncRNAs and 1,725 mRNAs were significantly dysregulated. Gene Ontology and pathway analyses among the dysregulated genes were performed. Co-expression network analysis was also performed to study molecular interactions. Several identified pathways were associated with psoriasis. Among the 2,194 dysregulated lncRNAs, 1,549 of these had cis- or trans-regulated predicted target genes. Among the 1,725 dysregulated mRNAs, 289 of the cis-regulated target genes and 262 of the trans-regulated target genes may be regulated by the differentially expressed lncRNAs; 10 differentially expressed lncRNAs were randomly selected and then validated. Of these lncRNAs, 7 exhibited the same expression profile as determined via microarray analysis, of which 3 lncRNAs were upregulated and 4 lncRNAs were downregulated. To the best of our knowledge, the present study is the first in which a microarray has been used to investigate the expression profile of lncRNAs associated with psoriasis. Additionally, the expression levels of the 10 aforementioned lncRNAs associated with psoriasis were validated in the present study for the first time using RT-qPCR. The findings demonstrated that lncRNAs may contribute to the pathogenesis of psoriasis and suggested their potential diagnostic and therapeutic value. Furthermore, the findings of the present study suggest that the combined actions of several lncRNAs may contribute to the pathogenesis of psoriasis.
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Affiliation(s)
- Jianjun Yan
- Department of Dermatology, Qilu Hospital, Shandong University, Jinan, Shandong 250012, P.R. China
| | - Jie Song
- Department of Medical Insurance, Qilu Hospital, Shandong University, Jinan, Shandong 250012, P.R. China
| | - Meng Qiao
- Department of Dermatology, Shandong Qianfoshan Hospital, Jinan, Shandong 250014, P.R. China
| | - Xintong Zhao
- Department of Dermatology, Qilu Hospital, Shandong University, Jinan, Shandong 250012, P.R. China
| | - Ronghua Li
- Department of Dermatology, Qilu Hospital, Shandong University, Jinan, Shandong 250012, P.R. China
| | - Jian Jiao
- Department of Dermatology, Qilu Hospital, Shandong University, Jinan, Shandong 250012, P.R. China
| | - Qing Sun
- Department of Dermatology, Qilu Hospital, Shandong University, Jinan, Shandong 250012, P.R. China
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22
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Das D, Akhtar S, Kurra S, Gupta S, Sharma A. Emerging role of immune cell network in autoimmune skin disorders: An update on pemphigus, vitiligo and psoriasis. Cytokine Growth Factor Rev 2019; 45:35-44. [PMID: 30773437 DOI: 10.1016/j.cytogfr.2019.01.001] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2019] [Accepted: 01/18/2019] [Indexed: 12/15/2022]
Abstract
Autoimmune skin diseases are a group of disorders that arise due to a deregulated immune system resulting in skin tissue destruction. In the majority of these conditions, either autoreactive immune cells or the autoantibodies are generated against self-antigens of the skin. Although the etiology of these diseases remains elusive, biochemical, genetic, and environmental factors such as infectious agents, toxins damage the skin tissue leading to self-antigen generation, autoantibody attack and finally results in autoimmunity of skin. Immune dysregulation, which involves predominantly T helper 1/17 (Th1/Th17) polarization and the inability of regulatory T cells to regress immune response, is implicated in autoimmune skin diseases. The emerging roles of immune cells, cytokines, and chemokines in the pathogenesis of common autoimmune skin diseases like pemphigus, vitiligo, and psoriasis are discussed in this review. The main focus is on the interplay between immune cell network including the innate and adaptive immune system, regulatory cells, immune checkpoints and recently identified tissue-resident memory cells (TRMs) in disease pathogenesis and relapse. We also attempt to highlight on the immune mechanisms common to these diseases which can be targeted for designing novel therapeutics.
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Affiliation(s)
- Dayasagar Das
- Department of Biochemistry, All India Institute of Medical Sciences, AIIMS, New Delhi, India
| | - Shamima Akhtar
- Department of Biochemistry, All India Institute of Medical Sciences, AIIMS, New Delhi, India
| | - Santosh Kurra
- Department of Biochemistry, All India Institute of Medical Sciences, AIIMS, New Delhi, India
| | - Somesh Gupta
- Department of Dermatology and Venereology, All India Institute of Medical Sciences, AIIMS, New Delhi, India
| | - Alpana Sharma
- Department of Biochemistry, All India Institute of Medical Sciences, AIIMS, New Delhi, India.
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Chi R, Chen X, Liu M, Zhang H, Li F, Fan X, Wang W, Lu H. Role of SNHG7-miR-653-5p-STAT2 feedback loop in regulating neuroblastoma progression. J Cell Physiol 2019; 234:13403-13412. [PMID: 30623419 DOI: 10.1002/jcp.28017] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2018] [Accepted: 12/17/2018] [Indexed: 12/22/2022]
Abstract
Long noncoding RNAs (lncRNAs) are reported to be involved in the pathology of numerous cancers, including neuroblastoma (NB). lncRNA SNHG7 has been recognized as a carcinogen in several cancers, but its role in NB progression remains unknown. Our study revealed that SNHG7 expression was markedly higher in NB tissues than that in nontumor tissues. Besides, upregulated SNHG7 was greatly correlated with poor overall survival of NB patients. Functionally, the loss-of-function assays demonstrated that knockdown of SNHG7 inhibited cell proliferation, migration, invasion, and epithelial-mesenchymal transition in NB cells. Mechanically, the bioinformatics analysis predicted that miR-653-5p was the shared partner of SNHG7 and signal transducer and activator of transcription 2 (STAT2). Unsurprisingly, we further confirmed that SNHG7 could interact with miR-653-5p and therefore functioned as the ceRNA of STAT2 so as to regulate STAT2 expression in NB cells. Moreover, STAT2 expression was in inverse proportion to miR-653-5p level but in positive proportion to SNHG7 level in NB tissues. Importantly, the repressed NB progression induced by silenced SNHG7 was reversed by STAT2 overexpression or miR-653-5p inhibitors. Jointly, our findings elucidated SNHG7 facilitated NB progression through the miR-653-5p/STAT2 pathway, providing a novel therapeutic target and prognostic biomarker for this disease.
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Affiliation(s)
- Renjie Chi
- Department of Pediatric Surgery, The Affiliated Hospital of Qingdao University, Qingdao, Shandong, China
| | - Xin Chen
- Department of Pediatric Surgery, The Affiliated Hospital of Qingdao University, Qingdao, Shandong, China
| | - Ming Liu
- Department of Pediatric Surgery, The Affiliated Hospital of Qingdao University, Qingdao, Shandong, China
| | - Huanyu Zhang
- Department of Pediatric Surgery, The Affiliated Hospital of Qingdao University, Qingdao, Shandong, China
| | - Fujiang Li
- Department of Pediatric Surgery, The Affiliated Hospital of Qingdao University, Qingdao, Shandong, China
| | - Xu Fan
- Department of Pediatric Surgery, The Affiliated Hospital of Qingdao University, Qingdao, Shandong, China
| | - Weiwei Wang
- Department of Pediatric Surgery, The Affiliated Hospital of Qingdao University, Qingdao, Shandong, China
| | - Hongting Lu
- Department of Pediatric Surgery, The Affiliated Hospital of Qingdao University, Qingdao, Shandong, China
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24
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Buerger C. Epidermal mTORC1 Signaling Contributes to the Pathogenesis of Psoriasis and Could Serve as a Therapeutic Target. Front Immunol 2018; 9:2786. [PMID: 30555471 PMCID: PMC6284005 DOI: 10.3389/fimmu.2018.02786] [Citation(s) in RCA: 47] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2018] [Accepted: 11/12/2018] [Indexed: 01/26/2023] Open
Abstract
Although modern biologics targeting different inflammatory mediators show promising therapeutic success, comprehensive knowledge about the molecular events in psoriatic keratinocytes that contribute to the pathogenesis and could serve as therapeutic targets is still scarce. However, recent efforts to understand the deregulated signal transduction pathways have led to the development of small molecule inhibitors e.g., tofacitinib targeting the Jak/Stat cascade that opens additional therapeutic options. Recently, the PI3-K/Akt/mTOR signaling pathway has emerged as an important player in the control of epidermal homeostasis. This review summarizes the current knowledge on the role of this pathway in the pathogenesis of psoriasis, especially the epidermal manifestation of the disease and discusses current approaches to target the pathway therapeutically.
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Affiliation(s)
- Claudia Buerger
- Department of Dermatology, Venerology and Allergology, Clinic of the Goethe University, Frankfurt am Main, Germany
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25
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Yadav K, Singh D, Singh MR. Protein biomarker for psoriasis: A systematic review on their role in the pathomechanism, diagnosis, potential targets and treatment of psoriasis. Int J Biol Macromol 2018; 118:1796-1810. [PMID: 30017989 DOI: 10.1016/j.ijbiomac.2018.07.021] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2018] [Revised: 07/03/2018] [Accepted: 07/06/2018] [Indexed: 12/20/2022]
Abstract
Psoriasis is defined as a long-lasting multifactorial inflammatory autoimmune skin condition precisely characterized by delimited, erythematic papules with adherent shiny scales. The conditions are led by hyperproliferative responses of epidermis due to hyperactivation and immature keratinocytes production. The psoriatic skin consists of the thickened epidermal layer, in concurrence with inflammatory exudates in the dermis mainly of dendritic cells, neutrophils, T cells, and macrophages, contributing to the distinct manifestation of psoriatic lesions. It consents to multifaceted and discrete pathology due to the genetic and immunological alteration resulting from abnormal expression of various regulatory and structural proteins. These proteins are associated with various cellular and sub-cellular activities. Therefore, the presence of protein in a pathological cellular environment in the psoriatic lesions as well as in serum could be a great avenue for the insight of pathomechanism, anticipation and diagnosis of psoriasis. Research of protein biomarker in psoriasis is yet a developing realm to be explored by both fundamental and clinical researchers. This review is an attempt to assimilate the current discoveries and revelations of different proteins as a biomarker and their importance in pathogenesis, diagnosis, treatment, and anticipation of both the inflammatory and other dermatological aspects of psoriasis.
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Affiliation(s)
- Krishna Yadav
- University Institute of Pharmacy, Pt. Ravishankar Shukla University, Raipur, Chhattisgarh 492010, India
| | - Deependra Singh
- University Institute of Pharmacy, Pt. Ravishankar Shukla University, Raipur, Chhattisgarh 492010, India; National Centre for Natural Resources, Pt. Ravishankar Shukla University, Raipur, Chhattisgarh 492010, India
| | - Manju Rawat Singh
- University Institute of Pharmacy, Pt. Ravishankar Shukla University, Raipur, Chhattisgarh 492010, India; National Centre for Natural Resources, Pt. Ravishankar Shukla University, Raipur, Chhattisgarh 492010, India.
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26
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Valero-Rubio D, Jiménez KM, Fonseca DJ, Payán-Gómez C, Laissue P. Transcriptomic analysis of FUCA1
knock-down in keratinocytes reveals new insights into the pathogenesis of fucosidosis skin lesions. Exp Dermatol 2018. [DOI: 10.1111/exd.13532] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Danyela Valero-Rubio
- Center For Research in Genetics and Genomics-CIGGUR; GENIUROS Research Group; School of Medicine and Health Sciences; Universidad del Rosario; Bogotá Colombia
| | - Karen Marcela Jiménez
- Center For Research in Genetics and Genomics-CIGGUR; GENIUROS Research Group; School of Medicine and Health Sciences; Universidad del Rosario; Bogotá Colombia
| | - Dora Janeth Fonseca
- Center For Research in Genetics and Genomics-CIGGUR; GENIUROS Research Group; School of Medicine and Health Sciences; Universidad del Rosario; Bogotá Colombia
| | - César Payán-Gómez
- Facultad de Ciencias Naturales y Matemáticas; Universidad del Rosario; Bogotá Colombia
| | - Paul Laissue
- Center For Research in Genetics and Genomics-CIGGUR; GENIUROS Research Group; School of Medicine and Health Sciences; Universidad del Rosario; Bogotá Colombia
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27
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Shaw KA, Cutler DJ, Okou D, Dodd A, Aronow BJ, Haberman Y, Stevens C, Walters TD, Griffiths A, Baldassano RN, Noe JD, Hyams JS, Crandall WV, Kirschner BS, Heyman MB, Snapper S, Guthery S, Dubinsky MC, Shapiro JM, Otley AR, Daly M, Denson LA, Kugathasan S, Zwick ME. Genetic variants and pathways implicated in a pediatric inflammatory bowel disease cohort. Genes Immun 2018; 20:131-142. [PMID: 29593342 PMCID: PMC6162182 DOI: 10.1038/s41435-018-0015-2] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2017] [Revised: 08/28/2017] [Accepted: 09/11/2017] [Indexed: 12/13/2022]
Abstract
In the United States, approximately 5% of individuals with inflammatory bowel disease (IBD) are younger than 20 years old. Studies of pediatric cohorts can provide unique insights into genetic architecture of IBD, which includes Crohn's disease (CD) and ulcerative colitis (UC). Large genome-wide association studies have found more than 200 IBD-associated loci but explain a minority of disease variance for CD and UC. We sought to characterize the contribution of rare variants to disease development, comparing exome sequencing of 368 pediatric IBD patients to publicly available exome sequencing (dbGaP) and aggregate frequency data (ExAC). Using dbGaP data, we performed logistic regression for common variants and optimal unified association tests (SKAT-O) for rare, likely-deleterious variants. We further compared rare variants to ExAC counts with Fisher's exact tests. We did pathway enrichment analysis on the most significant genes from each comparison. Many variants overlapped with known IBD-associated genes (e.g. NOD2). Rare variants were enriched in CD-associated loci (p = 0.009) and showed suggestive enrichment in neutrophil function genes (p = 0.05). Pathway enrichment implicated immune-related pathways, especially cell killing and apoptosis. Variants in extracellular matrix genes also emerged as an important theme in our analysis.
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Affiliation(s)
- Kelly A Shaw
- Department of Human Genetics, Emory University, Atlanta, GA, USA
| | - David J Cutler
- Department of Human Genetics, Emory University, Atlanta, GA, USA
| | - David Okou
- Department of Pediatrics, Emory University, Atlanta, GA, USA
| | - Anne Dodd
- Department of Pediatrics, Emory University, Atlanta, GA, USA
| | - Bruce J Aronow
- Division of Biomedical Informatics, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
| | - Yael Haberman
- Division of Pediatric Gastroenterology, Hepatology, and Nutrition, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
| | | | - Thomas D Walters
- Division of Pediatric Gastroenterology, Hepatology and Nutrition, Department of Pediatrics, The Hospital for Sick Children, University of Toronto, Toronto, ON, Canada
| | - Anne Griffiths
- Division of Pediatric Gastroenterology, Hepatology and Nutrition, Department of Pediatrics, The Hospital for Sick Children, University of Toronto, Toronto, ON, Canada
| | - Robert N Baldassano
- Department of Pediatrics, University of Pennsylvania, Children's Hospital of Philadelphia, Philadelphia, PA, USA
| | - Joshua D Noe
- Department of Pediatric Gastroenterology, Hepatology, and Nutrition, Medical College of Wisconsin, Milwaukee, WI, USA
| | - Jeffrey S Hyams
- Division of Digestive Diseases, Hepatology, and Nutrition, Connecticut Children's Medical Center, Hartford, CT, USA
| | - Wallace V Crandall
- Department of Pediatric Gastroenterology, Nationwide Children's Hospital, The Ohio State University College of Medicine, Columbus, OH, USA
| | - Barbara S Kirschner
- Department of Pediatrics, The University of Chicago Comer Children's Hospital, Chicago, IL, USA
| | - Melvin B Heyman
- Department of Pediatrics, University of California at San Francisco, San Francisco, CA, USA
| | - Scott Snapper
- Department of Gastroenterology and Nutrition, Boston Children's Hospital, Boston, MA, USA
| | - Stephen Guthery
- Department of Pediatrics, University of Utah, Salt Lake City, UT, USA
| | - Marla C Dubinsky
- Department of Pediatrics, Mount Sinai Hospital, New York, NY, USA
| | - Jason M Shapiro
- Department of Pediatrics, Hasbro Children's Hospital, Providence, RI, USA
| | - Anthony R Otley
- Department of Pediatrics, Dalhousie University, Halifax, NS, Canada
| | - Mark Daly
- Broad Institute of MIT and Harvard, Cambridge, MA, USA
| | - Lee A Denson
- Division of Pediatric Gastroenterology, Hepatology, and Nutrition, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
| | | | - Michael E Zwick
- Department of Human Genetics, Emory University, Atlanta, GA, USA.
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