1
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Bork F, Greve CL, Youn C, Chen S, N C Leal V, Wang Y, Fischer B, Nasri M, Focken J, Scheurer J, Engels P, Dubbelaar M, Hipp K, Zalat B, Szolek A, Wu MJ, Schittek B, Bugl S, Kufer TA, Löffler MW, Chamaillard M, Skokowa J, Kramer D, Archer NK, Weber ANR. naRNA-LL37 composite DAMPs define sterile NETs as self-propagating drivers of inflammation. EMBO Rep 2024; 25:2914-2949. [PMID: 38783164 PMCID: PMC11239898 DOI: 10.1038/s44319-024-00150-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2023] [Revised: 04/16/2024] [Accepted: 04/18/2024] [Indexed: 05/25/2024] Open
Abstract
Neutrophil extracellular traps (NETs) are a key antimicrobial feature of cellular innate immunity mediated by polymorphonuclear neutrophils (PMNs). NETs counteract microbes but are also linked to inflammation in atherosclerosis, arthritis, or psoriasis by unknown mechanisms. Here, we report that NET-associated RNA (naRNA) stimulates further NET formation in naive PMNs via a unique TLR8-NLRP3 inflammasome-dependent pathway. Keratinocytes respond to naRNA with expression of psoriasis-related genes (e.g., IL17, IL36) via atypical NOD2-RIPK signaling. In vivo, naRNA drives temporary skin inflammation, which is drastically ameliorated by genetic ablation of RNA sensing. Unexpectedly, the naRNA-LL37 'composite damage-associated molecular pattern (DAMP)' is pre-stored in resting neutrophil granules, defining sterile NETs as inflammatory webs that amplify neutrophil activation. However, the activity of the naRNA-LL37 DAMP is transient and hence supposedly self-limiting under physiological conditions. Collectively, upon dysregulated NET release like in psoriasis, naRNA sensing may represent both a potential cause of disease and a new intervention target.
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Affiliation(s)
- Francesca Bork
- Institute of Immunology, Department of Innate Immunity, University of Tübingen, Auf der Morgenstelle 15, 72076, Tübingen, Germany
| | - Carsten L Greve
- Institute of Immunology, Department of Innate Immunity, University of Tübingen, Auf der Morgenstelle 15, 72076, Tübingen, Germany
| | - Christine Youn
- Department of Dermatology, Johns Hopkins University School of Medicine, Baltimore, MD, 21231, USA
| | - Sirui Chen
- Institute of Immunology, Department of Innate Immunity, University of Tübingen, Auf der Morgenstelle 15, 72076, Tübingen, Germany
| | - Vinicius N C Leal
- Institute of Immunology, Department of Innate Immunity, University of Tübingen, Auf der Morgenstelle 15, 72076, Tübingen, Germany
- Laboratory of Immunogenetics, Department of Immunology, Institute of Biomedical Science, University of São Paulo (USP), São Paulo, SP, Brazil
| | - Yu Wang
- Department of Dermatology, Johns Hopkins University School of Medicine, Baltimore, MD, 21231, USA
| | - Berenice Fischer
- Department of Dermatology, University Medical Center of the Johannes Gutenberg-University Mainz, Mainz, Germany
| | - Masoud Nasri
- Division of Translational Oncology, Department of Oncology, Hematology, Clinical Immunology and Rheumatology, University Hospital Tübingen, Otfried-Müller Str. 10, 72076, Tübingen, Germany
| | - Jule Focken
- Department of Dermatology, University Hospital Tübingen, Liebermeisterstr. 25, 72076, Tübingen, Germany
| | - Jasmin Scheurer
- Department of Dermatology, University Hospital Tübingen, Liebermeisterstr. 25, 72076, Tübingen, Germany
| | - Pujan Engels
- Institute of Immunology, Department of Innate Immunity, University of Tübingen, Auf der Morgenstelle 15, 72076, Tübingen, Germany
| | - Marissa Dubbelaar
- Institute of Immunology, Department of Peptide-based Immunotherapy, University of Tübingen, Auf der Morgenstelle 15, 72076, Tübingen, Germany
- Quantitative Biology Center (QBiC), University of Tübingen, Auf der Morgenstelle 10, 72076, Tübingen, Germany
| | - Katharina Hipp
- Electron Microscopy Facility, Max Planck Institute for Biology Tübingen, Max-Planck-Ring 5, 72076, Tübingen, Germany
| | - Baher Zalat
- Institute of Immunology, Department of Innate Immunity, University of Tübingen, Auf der Morgenstelle 15, 72076, Tübingen, Germany
| | - Andras Szolek
- Institute of Immunology, Department of Innate Immunity, University of Tübingen, Auf der Morgenstelle 15, 72076, Tübingen, Germany
| | - Meng-Jen Wu
- Department of Dermatology, Johns Hopkins University School of Medicine, Baltimore, MD, 21231, USA
| | - Birgit Schittek
- Department of Dermatology, University Hospital Tübingen, Liebermeisterstr. 25, 72076, Tübingen, Germany
- iFIT - Cluster of Excellence (EXC 2180) "Image-Guided and Functionally Instructed Tumor Therapies", University of Tübingen, Tübingen, Germany
- CMFI - Cluster of Excellence (EXC 2124) "Controlling microbes to fight infection", University of Tübingen, Tübingen, Germany
| | - Stefanie Bugl
- Institute of Immunology, Department of Innate Immunity, University of Tübingen, Auf der Morgenstelle 15, 72076, Tübingen, Germany
| | - Thomas A Kufer
- Institute of Nutritional Medicine, Department of Immunology, University of Hohenheim, Fruwirthstr. 12, 70593, Stuttgart, Germany
| | - Markus W Löffler
- Institute of Immunology, Department of Peptide-based Immunotherapy, University of Tübingen, Auf der Morgenstelle 15, 72076, Tübingen, Germany
- iFIT - Cluster of Excellence (EXC 2180) "Image-Guided and Functionally Instructed Tumor Therapies", University of Tübingen, Tübingen, Germany
- Institute for Clinical and Experimental Transfusion Medicine, Medical Faculty, University of Tübingen, Otfried-Müller-Str. 4/1, 72076, Tübingen, Germany
| | - Mathias Chamaillard
- University of Lille, CNRS, Inserm, CHU Lille, Institut Pasteur de Lille, U1019 - UMR 8204 - CIIL - Centre d'Infection et d'Immunité de Lille, F-59000, Lille, France
| | - Julia Skokowa
- Division of Translational Oncology, Department of Oncology, Hematology, Clinical Immunology and Rheumatology, University Hospital Tübingen, Otfried-Müller Str. 10, 72076, Tübingen, Germany
- iFIT - Cluster of Excellence (EXC 2180) "Image-Guided and Functionally Instructed Tumor Therapies", University of Tübingen, Tübingen, Germany
| | - Daniela Kramer
- Department of Dermatology, University Medical Center of the Johannes Gutenberg-University Mainz, Mainz, Germany
| | - Nathan K Archer
- Department of Dermatology, Johns Hopkins University School of Medicine, Baltimore, MD, 21231, USA
| | - Alexander N R Weber
- Institute of Immunology, Department of Innate Immunity, University of Tübingen, Auf der Morgenstelle 15, 72076, Tübingen, Germany.
- iFIT - Cluster of Excellence (EXC 2180) "Image-Guided and Functionally Instructed Tumor Therapies", University of Tübingen, Tübingen, Germany.
- CMFI - Cluster of Excellence (EXC 2124) "Controlling microbes to fight infection", University of Tübingen, Tübingen, Germany.
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2
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Gilliet M, Modlin RL. Immunobiology of IL-26. J Invest Dermatol 2024; 144:1217-1222. [PMID: 38206272 DOI: 10.1016/j.jid.2023.10.038] [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: 07/25/2023] [Revised: 10/22/2023] [Accepted: 10/22/2023] [Indexed: 01/12/2024]
Abstract
T helper 17 (Th17) cells produce a set of cytokines that include IL-17 family members, IL-21, IL-22, and IL-26. These cytokines all contribute to the classic function of Th17 cells in combatting extracellular infection and promoting inflammation in autoimmune diseases. However, of the Th17 cytokines, only IL-26 has direct antimicrobial activity against microbes and can activate a broad range of immune cells through its ability to bind DNA and trigger pattern recognition receptors. It is noteworthy that IL-26 is produced by mammalian cells, including human Th17 cells, but is absent in rodents. As such, IL-26 is a potential therapeutic target to augment host immune responses against microbial pathogens but also to prevent inflammation and tissue damage in a variety of autoimmune diseases.
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Affiliation(s)
- Michel Gilliet
- Department of Dermatology, CHUV University Hospital and University of Lausanne (UNIL), Lausanne, Switzerland.
| | - Robert L Modlin
- Division of Dermatology, Department of Medicine, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California, USA.
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3
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Schindler M, Schuster-Winkelmann P, Weß V, Czell S, Rueff F, Wollenberg A, Siebeck M, Gropp R. NOD/Scid IL2Rγ null Mice Reconstituted with PBMCs from Patients with Atopic Dermatitis or Psoriasis Vulgaris Reflect the Respective Phenotype. JID INNOVATIONS 2024; 4:100268. [PMID: 38736522 PMCID: PMC11087984 DOI: 10.1016/j.xjidi.2024.100268] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2023] [Revised: 01/18/2024] [Accepted: 01/19/2024] [Indexed: 05/14/2024] Open
Abstract
NSG (NOD/Scid IL2Rγnull) mice reconstituted with PBMCs donated by patients with ulcerative colitis or Crohn's disease highly reflect the respective pathological phenotype. To determine whether these findings could be applicable to atopic dermatitis (AD) and psoriasis vulgaris (PV), PBMCs isolated from patients with AD and PV were first subjected to immunological profiling. Subsequently, NSG mice were reconstituted with these PBMCs. Hierarchical clustering and network analysis revealed a distinct profile of patients with AD and PV with activated CD4+ T cells (CD69, CD25) occupying a central position in the AD network and CD4+ CD134+ cells acting as the main hub in the PV network. After dermal application of DMSO, both NSG mice reconstituted with PBMCs from donors with AD (ie, NSG-AD mice) and NSG mice reconstituted with PBMCs from donors with PV (ie, NSG-PV mice) exhibited increased clinical, skin, and histological scores. Immunohistochemical analysis, frequencies of splenic human leukocytes, and cytokine expression levels indicated that CD4+ CD69+ cells, M1 and TSLP receptor-expressing monocytes, switched B cells, and monocyte chemoattractant protein 3 were the driving factors of inflammation in NSG-AD mice. In contrast, inflammation in NSG-PV mice was characterized by an increase in fibroblasts in the epidermis, frequencies of CD1a-expressing monocytes, and IL-17 levels. Therefore, the pathological phenotypes of NSG-AD mice and NSG-PV mice differ and partially reflect the respective human diseases.
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Affiliation(s)
- Marietta Schindler
- Department of General, Visceral, and Transplantation Surgery, LMU University Hospital, LMU Munich, Munich, Germany
| | - Paula Schuster-Winkelmann
- Department of General, Visceral, and Transplantation Surgery, LMU University Hospital, LMU Munich, Munich, Germany
| | - Veronika Weß
- Department of General, Visceral, and Transplantation Surgery, LMU University Hospital, LMU Munich, Munich, Germany
| | - Sophia Czell
- Department of Dermatology and Allergology, LMU University Hospital, LMU Munich, Munich, Germany
| | - Franziska Rueff
- Department of Dermatology and Allergology, LMU University Hospital, LMU Munich, Munich, Germany
| | - Andreas Wollenberg
- Department of Dermatology and Allergology, LMU University Hospital, LMU Munich, Munich, Germany
- Department of Dermatology and Allergology, University Hospital Augsburg, Augsburg, Germany
| | - Matthias Siebeck
- Department of General, Visceral, and Transplantation Surgery, LMU University Hospital, LMU Munich, Munich, Germany
| | - Roswitha Gropp
- Department of General, Visceral, and Transplantation Surgery, LMU University Hospital, LMU Munich, Munich, Germany
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Hernandez-Nicols BF, Robledo-Pulido JJ, Alvarado-Navarro A. Etiopathogenesis of Psoriasis: Integration of Proposed Theories. Immunol Invest 2024; 53:348-415. [PMID: 38240030 DOI: 10.1080/08820139.2024.2302823] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/28/2024]
Abstract
Psoriasis is a chronic inflammatory disease characterized by squamous and erythematous plaques on the skin and the involvement of the immune system. Global prevalence for psoriasis has been reported around 1-3% with a higher incidence in adults and similar proportions between men and women. The risk factors associated with psoriasis are both extrinsic and intrinsic, out of which a polygenic predisposition is a highlight out of the latter. Psoriasis etiology is not yet fully described, but several hypothesis have been proposed: 1) the autoimmunity hypothesis is based on the over-expression of antimicrobial peptides such as LL-37, the proteins ADAMTSL5, K17, and hsp27, or lipids synthesized by the PLA2G4D enzyme, all of which may serve as autoantigens to promote the differentiation of autoreactive lymphocytes T and unleash a chronic inflammatory response; 2) dysbiosis of skin microbiota hypothesis in psoriasis has gained relevance due to the observations of a loss of diversity and the participation of pathogenic bacteria such as Streptococcus spp. or Staphylococcus spp. the fungi Malassezia spp. or Candida spp. and the virus HPV, HCV, or HIV in psoriatic plaques; 3) the oxidative stress hypothesis, the most recent one, describes that the cell injury and the release of proinflammatory mediators and antimicrobial peptides that leads to activate of the Th1/Th17 axis observed in psoriasis is caused by a higher release of reactive oxygen species and the imbalance between oxidant and antioxidant mechanisms. This review aims to describe the mechanisms involved in the three hypotheses on the etiopathogeneses of psoriasis.
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Affiliation(s)
- Brenda Fernanda Hernandez-Nicols
- Centro de Investigación en Inmunología y Dermatología, Departamento de Fisiología, Centro Universitario de Ciencias de la Salud, Universidad de Guadalajara, Guadalajara, Mexico
| | - Juan José Robledo-Pulido
- Centro de Investigación en Inmunología y Dermatología, Departamento de Fisiología, Centro Universitario de Ciencias de la Salud, Universidad de Guadalajara, Guadalajara, Mexico
| | - Anabell Alvarado-Navarro
- Centro de Investigación en Inmunología y Dermatología, Departamento de Fisiología, Centro Universitario de Ciencias de la Salud, Universidad de Guadalajara, Guadalajara, Mexico
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5
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Reali E, Caliceti C, Lorenzini A, Rizzo P. The Use of Microbial Modifying Therapies to Prevent Psoriasis Exacerbation and Associated Cardiovascular Comorbidity. Inflammation 2024; 47:13-29. [PMID: 37953417 PMCID: PMC10799147 DOI: 10.1007/s10753-023-01915-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2023] [Revised: 10/02/2023] [Accepted: 10/03/2023] [Indexed: 11/14/2023]
Abstract
Psoriasis has emerged as a systemic disease characterized by skin and joint manifestations as well as systemic inflammation and cardiovascular comorbidities. Many progresses have been made in the comprehension of the immunological mechanisms involved in the exacerbation of psoriatic plaques, and initial studies have investigated the mechanisms that lead to extracutaneous disease manifestations, including endothelial disfunction and cardiovascular disease. In the past decade, the involvement of gut dysbiosis in the development of pathologies with inflammatory and autoimmune basis has clearly emerged. More recently, a major role for the skin microbiota in establishing the immunological tolerance in early life and as a source of antigens leading to cross-reactive responses towards self-antigens in adult life has also been evidenced. Gut microbiota can indeed be involved in shaping the immune and inflammatory response at systemic level and in fueling inflammation in the cutaneous and vascular compartments. Here, we summarized the microbiota-mediated mechanisms that, in the skin and gut, may promote and modulate local or systemic inflammation involved in psoriatic disease and endothelial dysfunction. We also analyze the emerging strategies for correcting dysbiosis or modulating skin and gut microbiota composition to integrate systemically existing pharmacological therapies for psoriatic disease. The possibility of merging systemic treatment and tailored microbial modifying therapies could increase the efficacy of the current treatments and potentially lower the effect on patient's life quality.
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Affiliation(s)
- Eva Reali
- Department of Translational Medicine, University of Ferrara, Ferrara, Italy.
| | - Cristiana Caliceti
- Department of Biomedical and Neuromotor Sciences, University of Bologna, Bologna, Italy
| | - Antonello Lorenzini
- Department of Biomedical and Neuromotor Sciences, University of Bologna, Bologna, Italy
- Istituto Nazionale Biosistemi e Biostrutture (INBB), Rome, Italy
| | - Paola Rizzo
- Department of Translational Medicine, University of Ferrara, Ferrara, Italy.
- Laboratory for Technologies of Advanced Therapies (LTTA) Centre, University of Ferrara, Ferrara, Italy.
- Maria Cecilia Hospital, GVM Care & Research, Cotignola, Ravenna, Italy.
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6
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Tanabe G, Mori T, Araki M, Kataoka H, Into T. Role of LL-37 in Oral Bacterial DNA Accumulation in Dental Plaque. J Dent Res 2024; 103:177-186. [PMID: 38093556 DOI: 10.1177/00220345231210767] [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] [Indexed: 02/06/2024] Open
Abstract
Dental plaque, a highly structured polymicrobial biofilm, persistently forms in the oral cavity and is a common problem affecting oral health. The role of oral defense factors in either collaborating or disrupting host-microbiome interactions remains insufficiently elucidated. This study aims to explore the role of LL-37, a critical antimicrobial peptide in the oral cavity, in dental plaque formation. Through immunostaining dental plaque specimens, we observed that LL-37 and DNA colocalized in the samples, appearing as condensed clusters. In vitro experiments revealed that LL-37 binds rapidly to oral bacterial DNA, forming high molecular weight, DNase-resistant complexes. This interaction results in LL-37 losing its inherent antibacterial activity. Further, upon the addition of LL-37, we observed a visible increase in the precipitation of bacterial DNA. We also discovered a significant correlation between the levels of the DNA-LL-37 complex and LL-37 within dental plaque specimens, demonstrating the ubiquity of the complex within the biofilm. By using immunostaining on dental plaque specimens, we could determine that the DNA-LL-37 complex was present as condensed clusters and small bacterial cell-like structures. This suggests that LL-37 immediately associates with the released bacterial DNA to form complexes that subsequently diffuse. We also demonstrated that the complexes exhibited similar Toll-like receptor 9-stimulating activities across different bacterial species, including Porphyromonas gingivalis, Fusobacterium nucleatum, Prevotella intermedia, and Streptococcus salivarius. However, these complexes prompted dissimilar activities, such as the production of IL-1β in monocytic cells via both NLRP3 pathway-dependent and pathway-independent mechanisms. This study, therefore, reveals the adverse role of LL-37 in dental plaque, where it binds bacterial DNA to form complexes that may precipitate to behave like an extracellular matrix. Furthermore, the unveiled stimulating properties and species-dependent activities of the oral bacterial DNA-LL-37 complexes enrich our understanding of dental plaque pathogenicity and periodontal innate immune responses.
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Affiliation(s)
- G Tanabe
- Department of Oral Microbiology, Division of Oral Infection Health Sciences, Asahi University School of Dentistry, Mizuho, Gifu, Japan
- Department of Sports Dentistry, Meikai University School of Dentistry, Sakado, Saitama, Japan
| | - T Mori
- Department of Oral Microbiology, Division of Oral Infection Health Sciences, Asahi University School of Dentistry, Mizuho, Gifu, Japan
| | - M Araki
- Department of Oral Microbiology, Division of Oral Infection Health Sciences, Asahi University School of Dentistry, Mizuho, Gifu, Japan
- Asahi University School of Dental Hygienists, Mizuho, Gifu, Japan
| | - H Kataoka
- Department of Oral Microbiology, Division of Oral Infection Health Sciences, Asahi University School of Dentistry, Mizuho, Gifu, Japan
| | - T Into
- Department of Oral Microbiology, Division of Oral Infection Health Sciences, Asahi University School of Dentistry, Mizuho, Gifu, Japan
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Lu J, Lu Y. Paradoxical psoriasis: The flip side of idiopathic psoriasis or an autocephalous reversible drug reaction? J Transl Autoimmun 2023; 7:100211. [PMID: 37731549 PMCID: PMC10507642 DOI: 10.1016/j.jtauto.2023.100211] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2022] [Revised: 02/21/2023] [Accepted: 09/05/2023] [Indexed: 09/22/2023] Open
Abstract
Psoriasis is a common, chronic skin disease that results mainly from the complex interplay between T cells, dendritic cells, and inflammatory cytokines including TNF-α, IL-17, IL-12, and IL-23. Successful therapy with anti-cytokine antibodies has proved the importance of these key cytokines, especially TNF-α. During the anti-TNF-α treatment of classical idiopathic psoriasis, a small portion of patients develop new psoriasiform lesions. This contradictory phenomenon was named paradoxical psoriasis which resembles idiopathic psoriasis clinically but presents overlapped histological patterns and distinct immunological processes. In this review, we discuss the differences between idiopathic psoriasis and paradoxical psoriasis with an emphasis on their innate immunity, as it is predominant in paradoxical psoriasis which exhibits type I IFN-mediated immunity without the activation of autoreactive T cells and memory T cells. We also put up an instructive algorithm for the management of paradoxical psoriasis. The decision on drug discontinuation or switching of biologics should be made based on the condition of underlying diseases and the severity of lesions.
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Affiliation(s)
- Jiawei Lu
- Department of Dermatology, The First Affiliated Hospital, Nanjing Medical University, Nanjing, PR China
| | - Yan Lu
- Department of Dermatology, The First Affiliated Hospital, Nanjing Medical University, Nanjing, PR China
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8
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Wiest MJ, Baert L, Gu C, Gayler KM, Ham H, Gorvel L, Keddis MT, Griffing LW, Joo H, Gorvel JP, Billadeau DD, Kane RR, Oh S. Endosomal trafficking inhibitor EGA can control TLR7-mediated IFNα expression by human plasmacytoid dendritic cells. Front Immunol 2023; 14:1202197. [PMID: 38077311 PMCID: PMC10704457 DOI: 10.3389/fimmu.2023.1202197] [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: 04/07/2023] [Accepted: 11/08/2023] [Indexed: 12/18/2023] Open
Abstract
Plasmacytoid dendritic cells (pDC) are the major producer of type 1 IFN in response to TLR7 agonists. Aberrant TLR7 activation and type 1 IFN expression by pDCs are linked to the pathogenesis of certain types of autoimmune diseases, including systemic lupus erythematosus (SLE). This study investigated the underlying mechanisms for TLR7-mediated cytokine expression by pDCs using a late endosome trafficking inhibitor, EGA (4-bromobenzaldehyde N-(2,6-dimethylphenyl) semicarbazone). We found that EGA treatment decreased IFNα expression by pDCs stimulated with imiquimod (R837), single-stranded RNA40, and influenza virus. EGA also decreased TNFα expression and secretion by R837-stimulated pDCs. Mechanistically, EGA treatment decreased phosphorylation of IKKα/β, STAT1, and p38, and prolonged degradation of IκBα. Furthermore, EGA treatment decreased the colocalization of 3F, a substituted adenine TLR7 agonist, with LAMP1+ compartments in pDCs. EGA was also capable of diminishing IFNα expression by SLE pDCs treated with R837 or live PR8/A/34 influenza viruses. Therefore, we concluded that trafficking of TLR7 agonists to LAMP1+ compartments is important for IFNα expression by pDCs. Data from this study support additional examinations of the potential benefits of EGA in treating type 1 IFN-associated inflammatory diseases in the future.
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Affiliation(s)
- Matthew J. Wiest
- Department of Immunology, Mayo Clinic, Scottsdale, AZ, United States
| | - Laurie Baert
- Department of Immunology, Mayo Clinic, Scottsdale, AZ, United States
| | - Chao Gu
- Department of Immunology, Mayo Clinic, Scottsdale, AZ, United States
| | - Kevin M. Gayler
- Department of Chemistry and Biochemistry, Baylor University, Waco, TX, United States
| | - Hyoungjun Ham
- Department of Immunology, Mayo Clinic, Rochester, MN, United States
| | - Laurent Gorvel
- CRCM, Aix Marseille Universite, INSERM, Marseille, France
| | - Mira T. Keddis
- Department of Nephrology, Mayo Clinic, Scottsdale, AZ, United States
| | - Leroy W. Griffing
- Department of Rheumatology, Mayo Clinic, Scottsdale, AZ, United States
| | - HyeMee Joo
- Department of Immunology, Mayo Clinic, Scottsdale, AZ, United States
- Department of Chemistry and Biochemistry, Baylor University, Waco, TX, United States
| | | | | | - Robert R. Kane
- Department of Chemistry and Biochemistry, Baylor University, Waco, TX, United States
| | - SangKon Oh
- Department of Immunology, Mayo Clinic, Scottsdale, AZ, United States
- Department of Chemistry and Biochemistry, Baylor University, Waco, TX, United States
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9
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Lee Y, Cha YJ, Jeong S, Yun S, Nho Y, Kang S, Kim W, Son J, Kim J, Kyung S. A novel sophorolipids extraction method by yeast fermentation process for enhanced skin efficacy. Skin Res Technol 2023; 29:e13518. [PMID: 38009026 PMCID: PMC10643984 DOI: 10.1111/srt.13518] [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: 08/10/2023] [Accepted: 10/21/2023] [Indexed: 11/28/2023]
Abstract
AIMS Oriental herbs have been used as medicines in the folk remedy for their numerous phytochemicals and bioactivities. In this study, we have selected five Korean traditional medical herbs and applied bio conversion extraction technology, named it as Bioconversion Oji complex, to identify phytochemicals and evaluate skin related efficacies. MATERIAL AND METHODS The process of two-step bio conversion was sequentially conducted. The first step of fermentation was to produce biosurfactants using macadamia seed oil with Candida bombicola, and then five natural plants were added to carry out the main fermentation. To evaluate skin improvement efficacy of Bioconversion Oji complex, in vitro and in vivo studies were conducted. We studied HaCaT cells cultured to assess viability, skin anti-inflammatory, moisturizing and barrier improvement-related mRNA expression. For efficacy study, 21 participants were tested evaluating anti-inflammatory, skin moisturizing and skin barrier improving effects of Bioconversion Oji complex compared to Water extraction of Oji (placebo) for the 4 weeks test period. RESULTS The application of bioconversion technology highly increased the content of amino acids and lipids within Bioconversion Oji complex, and 23 flavonoids were also identified. Bioconversion Oji complex was found to be non-toxic and showed significant effects in all parameters tested, including anti-inflammation, skin moisture, and skin barrier in both in vitro and in clinical studies. CONCLUSIONS Bioconversion Oji complex has demonstrated skin-friendly properties with significant beneficial effects on anti-inflammatory, skin hydration and barrier function properties. This study provides evidence for the use of Bioconversion Oji complex as an active ingredient in cosmetics and skincare products.
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Affiliation(s)
| | | | | | | | | | | | | | - Juhyun Son
- ZOE BIO BIO‐Material R&I CenterSeoulSouth Korea
| | - Juyun Kim
- ZOE BIO BIO‐Material R&I CenterSeoulSouth Korea
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10
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Gao W, Wang Z, Li W, Li Y, Liu M. Biomarkers and biologics related with psoriasis and psoriatic arthritis. Int Immunopharmacol 2023; 122:110646. [PMID: 37454633 DOI: 10.1016/j.intimp.2023.110646] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2023] [Revised: 06/06/2023] [Accepted: 07/10/2023] [Indexed: 07/18/2023]
Abstract
Over the past half century, psoriasis is considered as an immune-mediated inflammatory skin disease with the combined hallmarks of autoimmunity and autoinflammation, according to growing volumes of clinical and experimental findings. There is currently no cure for psoriasis, current treatment strategies focus on symptom control, disease minimization, and patient's quality of life enhancement. To meet these challenges, it keeps imperative to discover potential biomarkers, so that not only can they be used for the prediction and monitoring of psoriasis disease in clinic, but also can provide novel therapeutic targets or treatment strategies for psoriasis sufferers. This review systematically demonstrates the research progress of psoriasis-related biomarkers and elaborates their related mechanisms in the pathological development of psoriasis and psoriatic arthritis. In addition, we summarize the development of biologic therapies for psoriasis and psoriatic arthritis in order to drive the broader discussion of psoriasis as an autoimmune-mediated inflammatory skin disease.
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Affiliation(s)
- Weize Gao
- Department of Clinical Laboratory, Key Laboratory of Laboratory Medicine, The Affiliated Hospital of Qingdao University, Qingdao 266003, China
| | - Zhan Wang
- Department of Clinical Laboratory, Key Laboratory of Laboratory Medicine, The Affiliated Hospital of Qingdao University, Qingdao 266003, China
| | - Wenshuai Li
- Department of Clinical Laboratory, Key Laboratory of Laboratory Medicine, The Affiliated Hospital of Qingdao University, Qingdao 266003, China
| | - Yongxin Li
- Department of Clinical Laboratory, Key Laboratory of Laboratory Medicine, The Affiliated Hospital of Qingdao University, Qingdao 266003, China
| | - Mingjun Liu
- Department of Clinical Laboratory, Key Laboratory of Laboratory Medicine, The Affiliated Hospital of Qingdao University, Qingdao 266003, China.
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11
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Mylonas A, Hawerkamp HC, Wang Y, Chen J, Messina F, Demaria O, Meller S, Homey B, Di Domizio J, Mazzolai L, Hovnanian A, Gilliet M, Conrad C. Type I IFNs link skin-associated dysbiotic commensal bacteria to pathogenic inflammation and angiogenesis in rosacea. JCI Insight 2023; 8:151846. [PMID: 36633910 PMCID: PMC9977509 DOI: 10.1172/jci.insight.151846] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2021] [Accepted: 01/11/2023] [Indexed: 01/13/2023] Open
Abstract
Rosacea is a common chronic inflammatory skin disease with a fluctuating course of excessive inflammation and apparent neovascularization. Microbial dysbiosis with a high density of Bacillus oleronius and increased activity of kallikrein 5, which cleaves cathelicidin antimicrobial peptide, are key pathogenic triggers in rosacea. However, how these events are linked to the disease remains unknown. Here, we show that type I IFNs produced by plasmacytoid DCs represent the pivotal link between dysbiosis, the aberrant immune response, and neovascularization. Compared with other commensal bacteria, B. oleronius is highly susceptible and preferentially killed by cathelicidin antimicrobial peptides, leading to enhanced generation of complexes with bacterial DNA. These bacterial DNA complexes but not DNA complexes derived from host cells are required for cathelicidin-induced activation of plasmacytoid DCs and type I IFN production. Moreover, kallikrein 5 cleaves cathelicidin into peptides with heightened DNA binding and type I IFN-inducing capacities. In turn, excessive type I IFN expression drives neoangiogenesis via IL-22 induction and upregulation of the IL-22 receptor on endothelial cells. These findings unravel a potentially novel pathomechanism that directly links hallmarks of rosacea to the killing of dysbiotic commensal bacteria with induction of a pathogenic type I IFN-driven and IL-22-mediated angiogenesis.
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Affiliation(s)
- Alessio Mylonas
- Department of Dermatology, University Hospital CHUV, Lausanne, Switzerland
| | - Heike C Hawerkamp
- Department of Dermatology, Dusseldorf University Hospital, Dusseldorf, Germany
| | - Yichen Wang
- INSERM UMR 1163, Institut IMAGINE, Necker Hospital for Sick Children, Paris, France
| | - Jiaqi Chen
- Department of Dermatology, University Hospital CHUV, Lausanne, Switzerland
| | - Francesco Messina
- Department of Dermatology, University Hospital CHUV, Lausanne, Switzerland
| | - Olivier Demaria
- Department of Dermatology, University Hospital CHUV, Lausanne, Switzerland
| | - Stephan Meller
- Department of Dermatology, Dusseldorf University Hospital, Dusseldorf, Germany
| | - Bernhard Homey
- Department of Dermatology, Dusseldorf University Hospital, Dusseldorf, Germany
| | - Jeremy Di Domizio
- Department of Dermatology, University Hospital CHUV, Lausanne, Switzerland
| | - Lucia Mazzolai
- Department of Angiology, University Hospital CHUV, Lausanne, Switzerland
| | - Alain Hovnanian
- INSERM UMR 1163, Institut IMAGINE, Necker Hospital for Sick Children, Paris, France
| | - Michel Gilliet
- Department of Dermatology, University Hospital CHUV, Lausanne, Switzerland
| | - Curdin Conrad
- Department of Dermatology, University Hospital CHUV, Lausanne, Switzerland
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12
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Wiest MJ, Gu C, Ham H, Gorvel L, Keddis MT, Griffing LW, Joo H, Gorvel JP, Billadeau DD, Oh S. Disruption of endosomal trafficking with EGA alters TLR9 cytokine response in human plasmacytoid dendritic cells. Front Immunol 2023; 14:1144127. [PMID: 37020542 PMCID: PMC10067882 DOI: 10.3389/fimmu.2023.1144127] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2023] [Accepted: 03/10/2023] [Indexed: 04/07/2023] Open
Abstract
Plasmacytoid dendritic cells (pDCs) exhibit bifurcated cytokine responses to TLR9 agonists, an IRF7-mediated type 1 IFN response or a pro-inflammatory cytokine response via the activation of NF-κB. This bifurcated response has been hypothesized to result from either distinct signaling endosomes or endo-lysosomal trafficking delay of TLR9 agonists allowing for autocrine signaling to affect outcomes. Utilizing the late endosome trafficking inhibitor, EGA, we assessed the bifurcated cytokine responses of pDCs to TLR9 stimulation. EGA treatment of pDCs diminished both IFNα and pro-inflammatory cytokine expression induced by CpG DNAs (D- and K-type), CpG-DNAs complexed with DOTAP, and genomic DNAs complexed with LL37. Mechanistically, EGA suppressed phosphorylation of IKKα/β, STAT1, Akt, and p38, and decreased colocalization of CpG oligodeoxynucleotides with LAMP+ endo-lysosomes. EGA also diminished type 1 IFN expression by pDCs from systemic lupus erythematosus patients. Therefore, our findings help understand mechanisms for the bifurcated cytokine responses by pDCs and support future examination of the potential benefit of EGA in treating type 1 IFN-associated inflammatory diseases in the future.
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Affiliation(s)
- Matthew J. Wiest
- Department of Immunology, Mayo Clinic, Scottsdale, AZ, United States
- Baylor Institute of Biomedical Studies, Baylor University, Waco, TX, United States
| | - Chao Gu
- Department of Immunology, Mayo Clinic, Scottsdale, AZ, United States
| | - Hyoungjun Ham
- Department of Immunology, Mayo Clinic, Rochester, MN, United States
| | - Laurent Gorvel
- CRCM, Aix Marseille Universite, INSERM, Marseille, France
| | - Mira T. Keddis
- Department of Nephrology, Mayo Clinic, Scottsdale, AZ, United States
| | - Leroy W. Griffing
- Department of Rheumatology, Mayo Clinic, Scottsdale, AZ, United States
| | - HyeMee Joo
- Department of Immunology, Mayo Clinic, Scottsdale, AZ, United States
- Baylor Institute of Biomedical Studies, Baylor University, Waco, TX, United States
| | | | | | - SangKon Oh
- Department of Immunology, Mayo Clinic, Scottsdale, AZ, United States
- Baylor Institute of Biomedical Studies, Baylor University, Waco, TX, United States
- *Correspondence: SangKon Oh,
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13
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Oleszycka E, Kwiecien K, Kwiecinska P, Morytko A, Pocalun N, Camacho M, Brzoza P, Zabel BA, Cichy J. Soluble mediators in the function of the epidermal-immune-neuro unit in the skin. Front Immunol 2022; 13:1003970. [PMID: 36330530 PMCID: PMC9623011 DOI: 10.3389/fimmu.2022.1003970] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2022] [Accepted: 10/05/2022] [Indexed: 09/19/2023] Open
Abstract
Skin is the largest, environmentally exposed (barrier) organ, capable of integrating various signals into effective defensive responses. The functional significance of interactions among the epidermis and the immune and nervous systems in regulating and maintaining skin barrier function is only now becoming recognized in relation to skin pathophysiology. This review focuses on newly described pathways that involve soluble mediator-mediated crosstalk between these compartments. Dysregulation of these connections can lead to chronic inflammatory diseases and/or pathologic conditions associated with chronic pain or itch.
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Affiliation(s)
- Ewa Oleszycka
- Department of Immunology, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Kraków, Poland
| | - Kamila Kwiecien
- Department of Immunology, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Kraków, Poland
| | - Patrycja Kwiecinska
- Department of Immunology, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Kraków, Poland
| | - Agnieszka Morytko
- Department of Immunology, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Kraków, Poland
| | - Natalia Pocalun
- Department of Immunology, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Kraków, Poland
| | - Michelle Camacho
- Department of Immunology, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Kraków, Poland
| | - Piotr Brzoza
- Department of Immunology, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Kraków, Poland
| | - Brian A. Zabel
- Palo Alto Veterans Institute for Research, VA Palo Alto Health Care System, Palo Alto, CA, United States
| | - Joanna Cichy
- Department of Immunology, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Kraków, Poland
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14
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Capriotti L, Iuliano M, Lande R, Frasca L, Falchi M, Rosa P, Mangino G, Romeo G. Potential Pathogenetic Role of Antimicrobial Peptides Carried by Extracellular Vesicles in an in vitro Psoriatic Model. J Inflamm Res 2022; 15:5387-5399. [PMID: 36147689 PMCID: PMC9488619 DOI: 10.2147/jir.s373150] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2022] [Accepted: 08/01/2022] [Indexed: 11/23/2022] Open
Abstract
Purpose Extracellular Vesicles (EVs) are a heterogeneous group of cell-derived membranous nanoparticles involved in several physiopathological processes. EVs play a crucial role in the definition of the extracellular microenvironment through the transfer of their cargo. Psoriasis is a prototypical chronic inflammatory disease characterized by several secreted mediators, among which antimicrobial peptides (AMPs) are considered pivotal in the development of the psoriatic inflammatory microenvironment. The role of EVs in the pathogenesis of psoriasis has not been elucidated yet, even if emerging evidence demonstrated that interleukin-17A (IL-17A), the psoriasis-related principal cytokine, modifies EVs release and cargo content. The aim of this work was to analyze whether, besides IL-17A, other psoriasis-related cytokines (ie, IFN-γ, TNF-α, IL-22 and IL-23) could affect EVs release and their AMPs mRNAs cargo as well as to analyze the potential biological effect due to EVs internalization by different acceptor cells. Methods Nanoparticle tracking analysis (NTA) was performed on supernatants of HaCaT cells stimulated with IL-17A, IFN-γ, TNF-α, IL-22 or IL-23 to enumerate EVs. Real-Time RT-PCR was used for gene expression analysis in cells and EVs. Confocal microscopy and Flow cytometry were used to, respectively, study Netosis and EVs internalization. Results IL-17A and IFN-γ increased EVs release by HaCaT cells. All the tested cytokines modulated AMPs mRNA expression in parental cells and in their respective EVs. S100A12 and hBD2 mRNAs were upregulated following IL-17A and IL-22 treatments. Interestingly, EVs derived from cytokine treated HaCaT cells induced Netosis in freshly isolated neutrophils. Upregulation of S100A12 and hBD2 mRNA was also detectable in acceptor cells incubated with EVs derived from cells treated with psoriasis-related cytokines. Conclusion The obtained results highlighted the role of EVs in the composition of psoriasis-associated secretome and microenvironment also suggesting the EV involvement in the spreading of the disease mediators and in the possible associated comorbidities.
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Affiliation(s)
- Lorena Capriotti
- Department of Medico-Surgical Sciences and Biotechnologies, Sapienza University of Rome - Polo Pontino, Latina, Italy
| | - Marco Iuliano
- Department of Medico-Surgical Sciences and Biotechnologies, Sapienza University of Rome - Polo Pontino, Latina, Italy
| | - Roberto Lande
- Pharmacological Research and Experimental Therapy Section, National Center for Drug Research and Evaluation, Istituto Superiore di Sanità, Rome, Italy
| | - Loredana Frasca
- Pharmacological Research and Experimental Therapy Section, National Center for Drug Research and Evaluation, Istituto Superiore di Sanità, Rome, Italy
| | - Mario Falchi
- National AIDS Center, Istituto Superiore di Sanità, Rome, Italy
| | - Paolo Rosa
- Department of Medico-Surgical Sciences and Biotechnologies, Sapienza University of Rome - Polo Pontino, Latina, Italy
| | - Giorgio Mangino
- Department of Medico-Surgical Sciences and Biotechnologies, Sapienza University of Rome - Polo Pontino, Latina, Italy
| | - Giovanna Romeo
- Department of Medico-Surgical Sciences and Biotechnologies, Sapienza University of Rome - Polo Pontino, Latina, Italy
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15
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Zhukov AS, Patrushev AV, Khairutdinov VR, Samtsov AV, Kryukov EV. New aspects of the pathogenesis of psoriasis. VESTNIK DERMATOLOGII I VENEROLOGII 2022. [DOI: 10.25208/vdv1345] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022] Open
Abstract
Psoriasis is a chronic multi-factorial immune-mediated inflammatory disease of skin and joints. The variety of clinical forms of dermatosis is consistent with various pathogenetic features of the disease progress which have been significantly supplemented and reviewed recently. Knowledge of these mechanisms will improve and personalize the prescribed therapy.
This study places the emphasis on modern ideas about the formation of T cell memory, the role of melanocytes and innate lymphoid cells. Development mechanisms of guttate and paradoxical psoriasis with important distinguishing characteristics are described separately.
Today, knowledge of the molecular basis of the disease progression has led to the creation and introduction of a number of highly effective targeted drugs into clinical practice. Further developments related to the inhibition of resident memory cells, innate lymphoid cells, as well as the study of guttate psoriasis perpetuation and the occurrence of paradoxical psoriasis will significantly increase the effectiveness of the therapy.
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16
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Nicastro LK, de Anda J, Jain N, Grando KCM, Miller AL, Bessho S, Gallucci S, Wong GCL, Tükel Ç. Assembly of ordered DNA-curli fibril complexes during Salmonella biofilm formation correlates with strengths of the type I interferon and autoimmune responses. PLoS Pathog 2022; 18:e1010742. [PMID: 35972973 PMCID: PMC9380926 DOI: 10.1371/journal.ppat.1010742] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2022] [Accepted: 07/14/2022] [Indexed: 11/23/2022] Open
Abstract
Deposition of human amyloids is associated with complex human diseases such as Alzheimer's and Parkinson's. Amyloid proteins are also produced by bacteria. The bacterial amyloid curli, found in the extracellular matrix of both commensal and pathogenic enteric bacterial biofilms, forms complexes with extracellular DNA, and recognition of these complexes by the host immune system may initiate an autoimmune response. Here, we isolated early intermediate, intermediate, and mature curli fibrils that form throughout the biofilm development and investigated the structural and pathogenic properties of each. Early intermediate aggregates were smaller than intermediate and mature curli fibrils, and circular dichroism, tryptophan, and thioflavin T analyses confirmed the establishment of a beta-sheet secondary structure as the curli conformations matured. Intermediate and mature curli fibrils were more immune stimulatory than early intermediate fibrils in vitro. The intermediate curli was cytotoxic to macrophages independent of Toll-like receptor 2. Mature curli fibrils had the highest DNA content and induced the highest levels of Isg15 expression and TNFα production in macrophages. In mice, mature curli fibrils induced the highest levels of anti-double-stranded DNA autoantibodies. The levels of autoantibodies were higher in autoimmune-prone NZBWxF/1 mice than wild-type C57BL/6 mice. Chronic exposure to all curli forms led to significant histopathological changes and synovial proliferation in the joints of autoimmune-prone mice; mature curli was the most detrimental. In conclusion, curli fibrils, generated during biofilm formation, cause pathogenic autoimmune responses that are stronger when curli complexes contain higher levels of DNA and in mice predisposed to autoimmunity.
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Affiliation(s)
- Lauren K. Nicastro
- Center for Microbiology and Immunology, Lewis Katz School of Medicine, Temple University, Philadelphia, Pennsylvania, United States of America
| | - Jaime de Anda
- Department of Bioengineering, California Nano Systems Institute, University of California, Los Angeles, California, United States of America
| | - Neha Jain
- Department of Bioscience and Bioengineering, Indian Institute of Technology, Jodhpur, India
| | - Kaitlyn C. M. Grando
- Center for Microbiology and Immunology, Lewis Katz School of Medicine, Temple University, Philadelphia, Pennsylvania, United States of America
| | - Amanda L. Miller
- Center for Microbiology and Immunology, Lewis Katz School of Medicine, Temple University, Philadelphia, Pennsylvania, United States of America
| | - Shingo Bessho
- Center for Microbiology and Immunology, Lewis Katz School of Medicine, Temple University, Philadelphia, Pennsylvania, United States of America
| | - Stefania Gallucci
- Center for Microbiology and Immunology, Lewis Katz School of Medicine, Temple University, Philadelphia, Pennsylvania, United States of America
| | - Gerard C. L. Wong
- Department of Bioengineering, California Nano Systems Institute, University of California, Los Angeles, California, United States of America
| | - Çagla Tükel
- Center for Microbiology and Immunology, Lewis Katz School of Medicine, Temple University, Philadelphia, Pennsylvania, United States of America
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17
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Kamata M, Tada Y. Dendritic Cells and Macrophages in the Pathogenesis of Psoriasis. Front Immunol 2022; 13:941071. [PMID: 35837394 PMCID: PMC9274091 DOI: 10.3389/fimmu.2022.941071] [Citation(s) in RCA: 44] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2022] [Accepted: 06/01/2022] [Indexed: 12/13/2022] Open
Abstract
Psoriasis is a chronic inflammatory skin disease characterized by scaly indurated erythema. This disease impairs patients’ quality of life enormously. Pathological findings demonstrate proliferation and abnormal differentiation of keratinocytes and massive infiltration of inflammatory immune cells. The pathogenesis of psoriasis is complicated. Among immune cells, dendritic cells play a pivotal role in the development of psoriasis in both the initiation and the maintenance phases. In addition, it has been indicated that macrophages contribute to the pathogenesis of psoriasis especially in the initiation phase, although studies on macrophages are limited. In this article, we review the roles of dendritic cells and macrophages in the pathogenesis of psoriasis.
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18
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Krajina I, Stupin A, Šola M, Mihalj M. Oxidative Stress Induced by High Salt Diet—Possible Implications for Development and Clinical Manifestation of Cutaneous Inflammation and Endothelial Dysfunction in Psoriasis vulgaris. Antioxidants (Basel) 2022; 11:antiox11071269. [PMID: 35883760 PMCID: PMC9311978 DOI: 10.3390/antiox11071269] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2022] [Revised: 06/19/2022] [Accepted: 06/23/2022] [Indexed: 02/07/2023] Open
Abstract
Although oxidative stress is recognized as an important effector mechanism of the immune system, uncontrolled formation of reactive oxygen and nitrogen species promotes excessive tissue damage and leads to disease development. In view of this, increased dietary salt intake has been found to damage redox systems in the vessel wall, resulting in endothelial dysfunction associated with NO uncoupling, inflammation, vascular wall remodeling and, eventually, atherosclerosis. Several studies have reported increased systemic oxidative stress accompanied by reduced antioxidant capacity following a high salt diet. In addition, vigorous ionic effects on the immune mechanisms, such as (trans)differentiation of T lymphocytes are emerging, which together with the evidence of NaCl accumulation in certain tissues warrants a re-examination of the data derived from in vitro research, in which the ionic influence was excluded. Psoriasis vulgaris (PV), as a primarily Th17-driven inflammatory skin disease with proven inflammation-induced accumulation of sodium chloride in the skin, merits our interest in the role of oxidative stress in the pathogenesis of PV, as well as in the possible beneficial effects that could be achieved through modulation of dietary salt intake and antioxidant supplementation.
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Affiliation(s)
- Ivana Krajina
- Department of Dermatology and Venereology, Osijek University Hospital, J. Huttlera 4, HR-31000 Osijek, Croatia;
- Faculty of Medicine, Josip Juraj Strossmayer University of Osijek, J. Huttlera 4, HR-31000 Osijek, Croatia
| | - Ana Stupin
- Scientific Center of Excellence for Personalized Health Care, Josip Juraj Strossmayer University of Osijek, Trg Svetog Trojstva 3, HR-31000 Osijek, Croatia;
- Institute and Department of Physiology and Immunology, Faculty of Medicine, Josip Juraj Strossmayer University of Osijek, J. Huttlera 4, HR-31000 Osijek, Croatia
| | - Marija Šola
- Department of Dermatology and Venereology, Osijek University Hospital, J. Huttlera 4, HR-31000 Osijek, Croatia;
- Faculty of Medicine, Josip Juraj Strossmayer University of Osijek, J. Huttlera 4, HR-31000 Osijek, Croatia
- Correspondence: (M.Š.); (M.M.); Tel.: +385-31-512-800 (M.M.)
| | - Martina Mihalj
- Department of Dermatology and Venereology, Osijek University Hospital, J. Huttlera 4, HR-31000 Osijek, Croatia;
- Scientific Center of Excellence for Personalized Health Care, Josip Juraj Strossmayer University of Osijek, Trg Svetog Trojstva 3, HR-31000 Osijek, Croatia;
- Institute and Department of Physiology and Immunology, Faculty of Medicine, Josip Juraj Strossmayer University of Osijek, J. Huttlera 4, HR-31000 Osijek, Croatia
- Correspondence: (M.Š.); (M.M.); Tel.: +385-31-512-800 (M.M.)
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19
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Yang C, Bachu M, Du Y, Brauner C, Yuan R, Ah Kioon MD, Chesi G, Barrat FJ, Ivashkiv LB. CXCL4 synergizes with TLR8 for TBK1-IRF5 activation, epigenomic remodeling and inflammatory response in human monocytes. Nat Commun 2022; 13:3426. [PMID: 35701499 PMCID: PMC9195402 DOI: 10.1038/s41467-022-31132-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2021] [Accepted: 06/06/2022] [Indexed: 01/11/2023] Open
Abstract
Regulation of endosomal Toll-like receptor (TLR) responses by the chemokine CXCL4 is implicated in inflammatory and fibrotic diseases, with CXCL4 proposed to potentiate TLR responses by binding to nucleic acid TLR ligands and facilitating their endosomal delivery. Here we report that in human monocytes/macrophages, CXCL4 initiates signaling cascades and downstream epigenomic reprogramming that change the profile of the TLR8 response by selectively amplifying inflammatory gene transcription and interleukin (IL)-1β production, while partially attenuating the interferon response. Mechanistically, costimulation by CXCL4 and TLR8 synergistically activates TBK1 and IKKε, repurposes these kinases towards an inflammatory response via coupling with IRF5, and activates the NLRP3 inflammasome. CXCL4 signaling, in a cooperative and synergistic manner with TLR8, induces chromatin remodeling and activates de novo enhancers associated with inflammatory genes. Our findings thus identify new regulatory mechanisms of TLR responses relevant for cytokine storm, and suggest targeting the TBK1-IKKε-IRF5 axis may be beneficial in inflammatory diseases.
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Affiliation(s)
- Chao Yang
- HSS Research Institute and David Z. Rosensweig Genomics Research Center, Hospital for Special Surgery, New York, NY, USA
| | - Mahesh Bachu
- HSS Research Institute and David Z. Rosensweig Genomics Research Center, Hospital for Special Surgery, New York, NY, USA
| | - Yong Du
- HSS Research Institute and David Z. Rosensweig Genomics Research Center, Hospital for Special Surgery, New York, NY, USA
| | - Caroline Brauner
- HSS Research Institute and David Z. Rosensweig Genomics Research Center, Hospital for Special Surgery, New York, NY, USA
| | - Ruoxi Yuan
- HSS Research Institute and David Z. Rosensweig Genomics Research Center, Hospital for Special Surgery, New York, NY, USA
| | - Marie Dominique Ah Kioon
- HSS Research Institute and David Z. Rosensweig Genomics Research Center, Hospital for Special Surgery, New York, NY, USA
| | - Giancarlo Chesi
- HSS Research Institute and David Z. Rosensweig Genomics Research Center, Hospital for Special Surgery, New York, NY, USA
| | - Franck J Barrat
- HSS Research Institute and David Z. Rosensweig Genomics Research Center, Hospital for Special Surgery, New York, NY, USA
- Immunology and Microbial Pathogenesis Program, Weill Cornell Medicine, New York, NY, USA
- Department of Microbiology and Immunology, Weill Cornell Medicine, New York, NY, USA
| | - Lionel B Ivashkiv
- HSS Research Institute and David Z. Rosensweig Genomics Research Center, Hospital for Special Surgery, New York, NY, USA.
- Immunology and Microbial Pathogenesis Program, Weill Cornell Medicine, New York, NY, USA.
- Department of Medicine, Weill Cornell Medicine, New York, NY, USA.
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20
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STING agonist diABZI induces PANoptosis and DNA mediated acute respiratory distress syndrome (ARDS). Cell Death Dis 2022; 13:269. [PMID: 35338116 PMCID: PMC8953969 DOI: 10.1038/s41419-022-04664-5] [Citation(s) in RCA: 83] [Impact Index Per Article: 41.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2021] [Revised: 01/25/2022] [Accepted: 02/11/2022] [Indexed: 12/12/2022]
Abstract
Stimulator of interferon genes (STING) contributes to immune responses against tumors and may control viral infection including SARS-CoV-2 infection. However, activation of the STING pathway by airway silica or smoke exposure leads to cell death, self-dsDNA release, and STING/type I IFN dependent acute lung inflammation/ARDS. The inflammatory response induced by a synthetic non-nucleotide-based diABZI STING agonist, in comparison to the natural cyclic dinucleotide cGAMP, is unknown. A low dose of diABZI (1 µg by endotracheal route for 3 consecutive days) triggered an acute neutrophilic inflammation, disruption of the respiratory barrier, DNA release with NET formation, PANoptosis cell death, and inflammatory cytokines with type I IFN dependent acute lung inflammation. Downstream upregulation of DNA sensors including cGAS, DDX41, IFI204, as well as NLRP3 and AIM2 inflammasomes, suggested a secondary inflammatory response to dsDNA as a danger signal. DNase I treatment, inhibition of NET formation together with an investigation in gene-deficient mice highlighted extracellular DNA and TLR9, but not cGAS, as central to diABZI-induced neutrophilic response. Therefore, activation of acute cell death with DNA release may lead to ARDS which may be modeled by diABZI. These results show that airway targeting by STING activator as a therapeutic strategy for infection may enhance lung inflammation with severe ARDS. STING agonist diABZI induces neutrophilic lung inflammation and PANoptosis A, Airway STING priming induce a neutrophilic lung inflammation with epithelial barrier damage, double-stranded DNA release in the bronchoalvelolar space, cell death, NETosis and type I interferon release. B, 1. The diamidobenzimidazole (diABZI), a STING agonist is internalized into the cytoplasm through unknown receptor and induce the activation and dimerization of STING followed by TBK1/IRF3 phosporylation leading to type I IFN response. STING activation also leads to NF-kB activation and the production of pro-inflammatory cytokines TNFα and IL-6. 2. The activation of TNFR1 and IFNAR1 signaling pathway results in ZBP1 and RIPK3/ASC/CASP8 activation leading to MLKL phosphorylation and necroptosis induction. 3. This can also leads to Caspase-3 cleavage and apoptosis induction. 4. Self-dsDNA or mtDNA sensing by NLRP3 or AIM2 induces inflammsome formation leading to Gasdermin D cleavage enabling Gasdermin D pore formation and the release mature IL-1β and pyroptosis. NLRP3 inflammasome formation can be enhanced by the ZBP1/RIPK3/CASP8 complex. 5. A second signal of STING activation with diABZI induces cell death and the release of self-DNA which is sensed by cGAS and form 2′3′-cGAMP leading to STING hyper activation, the amplification of TBK1/IRF3 and NF-kB pathway and the subsequent production of IFN-I and inflammatory TNFα and IL-6. This also leads to IFI204 and DDX41 upregulation thus, amplifying the inflammatory loop. The upregulation of apoptosis, pyroptosis and necroptosis is indicative of STING-dependent PANoptosis. ![]()
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21
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Orsmond A, Bereza-Malcolm L, Lynch T, March L, Xue M. Skin Barrier Dysregulation in Psoriasis. Int J Mol Sci 2021; 22:10841. [PMID: 34639182 PMCID: PMC8509518 DOI: 10.3390/ijms221910841] [Citation(s) in RCA: 36] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2021] [Revised: 10/01/2021] [Accepted: 10/05/2021] [Indexed: 02/07/2023] Open
Abstract
The skin barrier is broadly composed of two elements-a physical barrier mostly localised in the epidermis, and an immune barrier localised in both the dermis and epidermis. These two systems interact cooperatively to maintain skin homeostasis and overall human health. However, if dysregulated, several skin diseases may arise. Psoriasis is one of the most prevalent skin diseases associated with disrupted barrier function. It is characterised by the formation of psoriatic lesions, the aberrant differentiation and proliferation of keratinocytes, and excessive inflammation. In this review, we summarize recent discoveries in disease pathogenesis, including the contribution of keratinocytes, immune cells, genetic and environmental factors, and how they advance current and future treatments.
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Affiliation(s)
- Andreas Orsmond
- Sutton Arthritis Research Laboratory, Faculty of Medicine and Health, Institute of Bone and Joint Research, Kolling Institute, University of Sydney at Royal North Shore Hospital, St Leonards, NSW 2065, Australia; (A.O.); (L.B.-M.)
- The Australian Arthritis and Autoimmune Biobank Collaborative (A3BC), Faculty of Medicine and Health, Institute of Bone and Joint Research, Kolling Institute, University of Sydney at Royal North Shore Hospital, St Leonards, NSW 2065, Australia; (T.L.); (L.M.)
| | - Lara Bereza-Malcolm
- Sutton Arthritis Research Laboratory, Faculty of Medicine and Health, Institute of Bone and Joint Research, Kolling Institute, University of Sydney at Royal North Shore Hospital, St Leonards, NSW 2065, Australia; (A.O.); (L.B.-M.)
- The Australian Arthritis and Autoimmune Biobank Collaborative (A3BC), Faculty of Medicine and Health, Institute of Bone and Joint Research, Kolling Institute, University of Sydney at Royal North Shore Hospital, St Leonards, NSW 2065, Australia; (T.L.); (L.M.)
| | - Tom Lynch
- The Australian Arthritis and Autoimmune Biobank Collaborative (A3BC), Faculty of Medicine and Health, Institute of Bone and Joint Research, Kolling Institute, University of Sydney at Royal North Shore Hospital, St Leonards, NSW 2065, Australia; (T.L.); (L.M.)
| | - Lyn March
- The Australian Arthritis and Autoimmune Biobank Collaborative (A3BC), Faculty of Medicine and Health, Institute of Bone and Joint Research, Kolling Institute, University of Sydney at Royal North Shore Hospital, St Leonards, NSW 2065, Australia; (T.L.); (L.M.)
| | - Meilang Xue
- Sutton Arthritis Research Laboratory, Faculty of Medicine and Health, Institute of Bone and Joint Research, Kolling Institute, University of Sydney at Royal North Shore Hospital, St Leonards, NSW 2065, Australia; (A.O.); (L.B.-M.)
- The Australian Arthritis and Autoimmune Biobank Collaborative (A3BC), Faculty of Medicine and Health, Institute of Bone and Joint Research, Kolling Institute, University of Sydney at Royal North Shore Hospital, St Leonards, NSW 2065, Australia; (T.L.); (L.M.)
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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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Kopfnagel V, Dreyer S, Zeitvogel J, Pieper DH, Buch A, Sodeik B, Rademacher F, Harder J, Werfel T. Free human DNA attenuates the activity of antimicrobial peptides in atopic dermatitis. Allergy 2021; 76:3145-3154. [PMID: 34176149 DOI: 10.1111/all.14992] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2020] [Revised: 06/01/2021] [Accepted: 06/07/2021] [Indexed: 01/30/2023]
Abstract
BACKGROUND The high susceptibility of AD patients to microbial skin infections has been attributed to a deficient antimicrobial peptide (AMP) expression, which is contradicted by a growing amount of recent studies clearly demonstrating that AMP expression is not impaired in lesional skin of AD patients. The reasons for the high susceptibility of AD patients to microbial infections are still unknown. METHODS The influence of self-DNA on the antimicrobial activity of RNase 7, LL-37, and hBD2 has been investigated using antibacterial and antiviral assays. The amount of self-DNA on skin has been analyzed by skin rinsings and subsequent quantification using dsDNA assays. DNA source was identified by qPCR. RESULTS Complex formation of the AMPs with self-DNA significantly impaired their antibacterial activity against Staphylococcus aureus and their antiviral activity against HSV-1. The inhibition of the antibacterial activity was dependent on the DNA concentration but not on the length of the DNA molecules. Of note, we detected significant higher amounts of cell-free self-DNA in skin rinses taken from lesional AD skin compared to skin rinses from non-lesional skin and from normal skin of healthy donors. Consequently, rinse solution from AD lesional skin prevented antibacterial activity of LL-37. CONCLUSION Our study indicates that extracellular self-DNA is released in considerable amounts in AD skin lesions and AMP-self-DNA-complex formation leads to a significant loss of antibacterial and antiviral activity in atopic dermatitis. Studies on strategies to reduce the amount of extracellular DNA in AD are needed to identify possible methods relevant in clinical settings.
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Affiliation(s)
- Verena Kopfnagel
- Division of Immunodermatology and Allergy Research Department of Dermatology and Allergy Hannover Medical School Hannover Germany
- Cluster of Excellence RESIST (EXC 2155) Hannover Medical School Hannover Germany
| | - Sylvia Dreyer
- Division of Immunodermatology and Allergy Research Department of Dermatology and Allergy Hannover Medical School Hannover Germany
| | - Jana Zeitvogel
- Division of Immunodermatology and Allergy Research Department of Dermatology and Allergy Hannover Medical School Hannover Germany
- Cluster of Excellence RESIST (EXC 2155) Hannover Medical School Hannover Germany
| | - Dietmar H. Pieper
- Microbial Interactions and Processes Research Group Helmholtz Centre for Infection Research Braunschweig Germany
| | - Anna Buch
- Institute of Virology Hannover Medical School Hannover Germany
- DZIF – German Centre for Infection Research Partner site Hannover‐Braunschweig Germany
| | - Beate Sodeik
- Cluster of Excellence RESIST (EXC 2155) Hannover Medical School Hannover Germany
- Institute of Virology Hannover Medical School Hannover Germany
- DZIF – German Centre for Infection Research Partner site Hannover‐Braunschweig Germany
| | | | - Jürgen Harder
- Department of Dermatology University Hospital Schleswig‐Holstein Kiel Germany
| | - Thomas Werfel
- Division of Immunodermatology and Allergy Research Department of Dermatology and Allergy Hannover Medical School Hannover Germany
- Cluster of Excellence RESIST (EXC 2155) Hannover Medical School Hannover Germany
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Seiringer P, Garzorz-Stark N, Eyerich K. T-Cell‒Mediated Autoimmunity: Mechanisms and Future Directions. J Invest Dermatol 2021; 142:804-810. [PMID: 34538423 DOI: 10.1016/j.jid.2021.04.032] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2021] [Revised: 04/12/2021] [Accepted: 04/18/2021] [Indexed: 12/28/2022]
Abstract
T cells are key drivers of autoimmunity in numerous noncommunicable inflammatory skin diseases by directly harming host tissue or through helping B cells in producing autoantibodies. Technological advances have contributed to identifying autoantigens, the Holy Grail of autoimmunity, in many inflammatory disorders of the skin. Novel therapeutic approaches such as chimeric (auto)antibody receptor T cells are a milestone on the way to finding individualized, well-tolerated, targeted therapies. This review summarizes the current knowledge on pathogenesis, immune response pattern‒related ontology, diagnostic approaches, and treatment options of autoimmune skin diseases.
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Affiliation(s)
- Peter Seiringer
- Department of Dermatology and Allergy, Technical University of Munich, Munich, Germany; Center of Allergy and Environment (ZAUM), Helmholtz Center and Technical University of Munich, Munich, Germany
| | - Natalie Garzorz-Stark
- Department of Dermatology and Allergy, Technical University of Munich, Munich, Germany; Division of Dermatology and Venereology, Department of Medicine, Solna, Karolinska Institutet, Stockholm, Sweden; Center for molecular medicine, Karolinska Institutet, Stockholm, Sweden; Unit of Dermatology, Karolinska University Hospital, Stockholm, Sweden
| | - Kilian Eyerich
- Department of Dermatology and Allergy, Technical University of Munich, Munich, Germany; Division of Dermatology and Venereology, Department of Medicine, Solna, Karolinska Institutet, Stockholm, Sweden; Center for molecular medicine, Karolinska Institutet, Stockholm, Sweden; Unit of Dermatology, Karolinska University Hospital, Stockholm, Sweden.
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Chinnappan M, Harris-Tryon TA. Novel mechanisms of microbial crosstalk with skin innate immunity. Exp Dermatol 2021; 30:1484-1495. [PMID: 34252227 DOI: 10.1111/exd.14429] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2021] [Revised: 06/28/2021] [Accepted: 07/06/2021] [Indexed: 12/12/2022]
Abstract
Skin is an organ with a dynamic ecosystem that harbours pathogenic and commensal microbes, which constantly communicate amongst each other and with the host immune system. Evolutionarily, skin and its microbiota have evolved to remain in homeostasis. However, frequently this homeostatic relationship is disturbed by a variety of factors such as environmental stress, diet, genetic mutations, and the microbiome itself. Commensal microbes also play a major role in the maintenance of microbial homeostasis. In addition to their ability to limit pathogens, many skin commensals such as Staphylococcus epidermidis and Cutibacterium acnes have recently been implicated in disease pathogenesis either by directly modulating the host immune components or by supporting the expansion of other pathogenic microbes. Likewise, opportunistic skin pathogens such as Staphylococcus aureus and Staphylococcus lugdunensis are able to breach the skin and cause disease. Though much has been established about the microbiota's function in skin immunity, we are in a time where newer mechanistic insights rapidly redefine our understanding of the host/microbial interface in the skin. In this review, we provide a concise summary of recent advances in our understanding of the interplay between host defense strategies and the skin microbiota.
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Affiliation(s)
- Mahendran Chinnappan
- Department of Dermatology, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Tamia A Harris-Tryon
- Department of Dermatology, University of Texas Southwestern Medical Center, Dallas, TX, USA.,Department of Immunology, University of Texas Southwestern Medical Center, Dallas, TX, USA
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26
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Dinshaw IJ, Ahmad N, Salim N, Leo BF. Nanoemulsions: A Review on the Conceptualization of Treatment for Psoriasis Using a 'Green' Surfactant with Low-Energy Emulsification Method. Pharmaceutics 2021; 13:1024. [PMID: 34371716 PMCID: PMC8309190 DOI: 10.3390/pharmaceutics13071024] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2021] [Revised: 06/29/2021] [Accepted: 07/01/2021] [Indexed: 12/13/2022] Open
Abstract
Psoriasis is a skin disease that is not lethal and does not spread through bodily contact. However, this seemingly harmless condition can lead to a loss of confidence and social stigmatization due to a persons' flawed appearance. The conventional methods of psoriasis treatment include taking in systemic drugs to inhibit immunoresponses within the body or applying topical drugs onto the surface of the skin to inhibit cell proliferation. Topical methods are favored as they pose lesser side effects compared to the systemic methods. However, the side effects from systemic drugs and low bioavailability of topical drugs are the limitations to the treatment. The use of nanotechnology in this field has enhanced drug loading capacity and reduced dosage size. In this review, biosurfactants were introduced as a 'greener' alternative to their synthetic counterparts. Glycolipid biosurfactants are specifically suited for anti-psoriatic application due to their characteristic skin-enhancing qualities. The selection of a suitable oil phase can also contribute to the anti-psoriatic effect as some oils have skin-healing properties. The review covers the pathogenic pathway of psoriasis, conventional treatments, and prospective ingredients to be used as components in the nanoemulsion formulation. Furthermore, an insight into the state-of-the-art methods used in formulating nanoemulsions and their progression to low-energy methods are also elaborated in detail.
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Affiliation(s)
- Ignatius Julian Dinshaw
- Department of Chemistry, Faculty of Science, University of Malaya, Kuala Lumpur 50603, Malaysia;
| | - Noraini Ahmad
- Department of Chemistry, Faculty of Science, University of Malaya, Kuala Lumpur 50603, Malaysia;
| | - Norazlinaliza Salim
- Integrated Chemical Biophysics Research, Faculty of Science, Universiti Putra Malaysia, Serdang 43400, Malaysia
| | - Bey Fen Leo
- Nanotechnology & Catalysis Research Centre (NANOCAT), Institute of Advanced Studies, University of Malaya, Kuala Lumpur 50603, Malaysia;
- Faculty of Medicine, University of Malaya, Kuala Lumpur 50603, Malaysia
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27
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Immunomodulatory Properties of Host Defence Peptides in Skin Wound Healing. Biomolecules 2021; 11:biom11070952. [PMID: 34203393 PMCID: PMC8301823 DOI: 10.3390/biom11070952] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2021] [Revised: 06/16/2021] [Accepted: 06/19/2021] [Indexed: 02/07/2023] Open
Abstract
Cutaneous wound healing is a vital biological process that aids skin regeneration upon injury. Wound healing failure results from persistent inflammatory conditions observed in diabetes, or autoimmune diseases like psoriasis. Chronic wounds are incurable due to factors like poor oxygenation, aberrant function of peripheral sensory nervature, inadequate nutrients and blood tissue supply. The most significant hallmark of chronic wounds is heavily aberrant immune skin function. The immune response in humans relies on a large network of signalling molecules and their interactions. Research studies have reported on the dual role of host defence peptides (HDPs), which are also often called antimicrobial peptides (AMPs). Their duality reflects their potential for acting as antibacterial peptides, and as immunodulators that assist in modulating several biological signalling pathways related to processes such as wound healing, autoimmune disease, and others. HDPs may differentially control gene regulation and alter the behaviour of epithelial and immune cells, resulting in modulation of immune responses. In this review, we shed light on the understanding and most recent advances related to molecular mechanisms and immune modulatory features of host defence peptides in human skin wound healing. Understanding their functional role in skin immunity may further inspire topical treatments for chronic wounds.
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28
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Afonina IS, Van Nuffel E, Beyaert R. Immune responses and therapeutic options in psoriasis. Cell Mol Life Sci 2021; 78:2709-2727. [PMID: 33386888 PMCID: PMC11072277 DOI: 10.1007/s00018-020-03726-1] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2020] [Revised: 11/23/2020] [Accepted: 11/28/2020] [Indexed: 02/07/2023]
Abstract
Psoriasis is a chronic inflammatory disease of the skin that affects about 2-3% of the population and greatly impairs the quality of life of affected individuals. Psoriatic skin is characterized by excessive proliferation and aberrant differentiation of keratinocytes, as well as redness caused by increased dilation of the dermal blood vessels and infiltration of immune cells. Although the pathogenesis of psoriasis has not yet been completely elucidated, it is generally believed to arise from a complex interplay between hyperproliferating keratinocytes and infiltrating, activated immune cells. So far, the exact triggers that elicit this disease are still enigmatic, yet, it is clear that genetic predisposition significantly contributes to the development of psoriasis. In this review, we summarize current knowledge of important cellular and molecular mechanisms driving the initiation and amplification stages of psoriasis development, with a particular focus on cytokines and emerging evidence illustrating keratinocyte-intrinsic defects as key drivers of inflammation. We also discuss mouse models that have contributed to a better understanding of psoriasis pathogenesis and the preclinical development of novel therapeutics, including monoclonal antibodies against specific cytokines or cytokine receptors that have revolutionized the treatment of psoriasis. Future perspectives that may have the potential to push basic research and open up new avenues for therapeutic intervention are provided.
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Affiliation(s)
- Inna S Afonina
- Unit of Molecular Signal Transduction in Inflammation, Center for Inflammation Research, Ghent University - VIB, Technologiepark 71, B-9052, Ghent, Belgium
- Department for Biomedical Molecular Biology, Ghent University, Technologiepark 71, B-9052, Ghent, Belgium
| | - Elien Van Nuffel
- Unit of Molecular Signal Transduction in Inflammation, Center for Inflammation Research, Ghent University - VIB, Technologiepark 71, B-9052, Ghent, Belgium
- Department for Biomedical Molecular Biology, Ghent University, Technologiepark 71, B-9052, Ghent, Belgium
| | - Rudi Beyaert
- Unit of Molecular Signal Transduction in Inflammation, Center for Inflammation Research, Ghent University - VIB, Technologiepark 71, B-9052, Ghent, Belgium.
- Department for Biomedical Molecular Biology, Ghent University, Technologiepark 71, B-9052, Ghent, Belgium.
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Dysregulation of the gut-brain-skin axis and key overlapping inflammatory and immune mechanisms of psoriasis and depression. Biomed Pharmacother 2021; 137:111065. [PMID: 33540138 DOI: 10.1016/j.biopha.2020.111065] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2020] [Revised: 11/14/2020] [Accepted: 11/20/2020] [Indexed: 12/21/2022] Open
Abstract
The occurrence, progression and recurrence of psoriasis are thought to be related to mood and psychological disorders such as depression. Psoriasis can lead to depression, and depression, in turn, exacerbates psoriasis. No specific mechanism can explain the association between psoriasis and depression. The gut-brain-skin axis has been used to explain correlations among the gut microbiota, emotional states and systemic and skin inflammation, and this axis may be associated with overlapping mechanisms between psoriasis and depression. Therefore, in the context of the gut-brain-skin axis, we systematically summarized and comparatively analysed the inflammatory and immune mechanisms of psoriasis and depression and illustrated the dysregulation of the hypothalamic-pituitary-adrenal (HPA) axis and the gut microbiota. This review provides a theoretical basis and new targets for the treatment of psoriasis and depression.
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30
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Gedik TE, Kucuk H, Goker B, Haznedaroglu S, Pasaoglu H, Varan O, Ozturk MA, Pasaoglu OT, Tufan A. Serum defensin levels in patients with systemic sclerosis. Adv Rheumatol 2020; 60:54. [PMID: 33353556 DOI: 10.1186/s42358-020-00156-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2020] [Accepted: 12/08/2020] [Indexed: 01/18/2023] Open
Abstract
BACKGROUND Systemic sclerosis (SSc) is an autoimmune disease characterized by fibrosis of skin and lung as well as involvement of kidney, gastrointestinal system and heart. Aetiology and exact mechanism of disease is poorly understood. The association between antimicrobial peptides (AMPs) and other diseases such as idiopathic pulmonary fibrosis, diffuse panbronchiolitis, pulmoner alveolar proteinosis and psoriasis have been reported. A small number of studies have examined the role of AMPs on autoimmune diseases which has not been studied in scleroderma yet. We aimed to investigate AMP serum levels and their association with disease characteristics of SSc. METHODS Forty-two patients (40 female, mean age 42 years) and 38 healthy subjects (32 female, mean age 38 years) were enrolled. For SSc patients, the following data were recorded: disease subset (limited/diffuse), autoantibodies (antinuclear, anti-centromere (ACA), and anti-SCL-70), blood tests, erythrocyte sedimentation rate (ESR), and C-reactive protein (CRP), modified Rodnan skin score, presence and history of digital ulcers, kidney, gastrointestinal disease and lung involvement assessed by computed tomography and pulmonary function tests. Association between serum AMPs and disease characteristics were analysed. RESULTS Twenty-nine of the patients had diffuse (69%) and 13 of the patients had limited (31%) systemic sclerosis. Average disease duration was 5.5 years. Pulmonary involvement was detected in 20 patients (47.6%). Serum concentration of alpha defensin was higher than healthy subjects (563 ± 415 vs 377 ± 269 ng/mL, p = 0.02). However, no difference was observed for beta-1 and beta-2 defensins in SSc patients and healthy controls. In sub-group analysis patients with interstitial lung disease had higher levels of alpha defensin than those without lung involvement (684 ± 473 vs 430 ± 299 ng/ml, p = 0.04). There was also correlation between alfa defensin serum concentrations and CRP (r = 0.34). CONCLUSIONS Alpha defensin levels are increased in scleroderma patients and correlated with lung involvement indicating a role in the pathogenesis of disease. TRIAL REGISTRATION This study is not a clinical trial study.
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Affiliation(s)
- Tugce Emiroglu Gedik
- Department of Internal Medicine, Gazi University Faculty of Medicine, Ankara, Turkey. .,Department of Internal Medicine, Division of Geriatrics, Istanbul University-Cerrahpasa, Cerrahpasa Faculty of Medicine, Istanbul, Turkey.
| | - Hamit Kucuk
- Department of Internal Medicine, Division of Rheumatology, Gazi University Faculty of Medicine, Ankara, Turkey
| | - Berna Goker
- Department of Internal Medicine, Division of Rheumatology, Gazi University Faculty of Medicine, Ankara, Turkey
| | - Seminur Haznedaroglu
- Department of Internal Medicine, Division of Rheumatology, Gazi University Faculty of Medicine, Ankara, Turkey
| | - Hatice Pasaoglu
- Department of Biochemistry, Gazi University Faculty of Medicine, Ankara, Turkey
| | - Ozkan Varan
- Department of Internal Medicine, Division of Rheumatology, Gazi University Faculty of Medicine, Ankara, Turkey
| | - Mehmet Akif Ozturk
- Department of Internal Medicine, Division of Rheumatology, Gazi University Faculty of Medicine, Ankara, Turkey
| | - Ozge Tugce Pasaoglu
- Department of Biochemistry, Gazi University Faculty of Medicine, Ankara, Turkey
| | - Abdurrahman Tufan
- Department of Internal Medicine, Division of Rheumatology, Gazi University Faculty of Medicine, Ankara, Turkey
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Godlewska U, Brzoza P, Kwiecień K, Kwitniewski M, Cichy J. Metagenomic Studies in Inflammatory Skin Diseases. Curr Microbiol 2020; 77:3201-3212. [PMID: 32813091 PMCID: PMC7536147 DOI: 10.1007/s00284-020-02163-4] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2020] [Accepted: 08/10/2020] [Indexed: 02/07/2023]
Abstract
Next-generation sequencing (NGS) technologies together with an improved access to compute performance led to a cost-effective genome sequencing over the past several years. This allowed researchers to fully unleash the potential of genomic and metagenomic analyses to better elucidate two-way interactions between host cells and microbiome, both in steady-state and in pathological conditions. Experimental research involving metagenomics shows that skin resident microbes can influence the cutaneous pathophysiology. Here, we review metagenome approaches to study microbiota at this barrier site. We also describe the consequences of changes in the skin microbiota burden and composition, mostly revealed by these technologies, in the development of common inflammatory skin diseases.
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Affiliation(s)
- Urszula Godlewska
- Department of Immunology, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Kraków, Poland.
| | - Piotr Brzoza
- Department of Immunology, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Kraków, Poland
| | - Kamila Kwiecień
- Department of Immunology, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Kraków, Poland
| | - Mateusz Kwitniewski
- Department of Immunology, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Kraków, Poland
| | - Joanna Cichy
- Department of Immunology, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Kraków, Poland
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Tokuyama M, Mabuchi T. New Treatment Addressing the Pathogenesis of Psoriasis. Int J Mol Sci 2020; 21:ijms21207488. [PMID: 33050592 PMCID: PMC7589905 DOI: 10.3390/ijms21207488] [Citation(s) in RCA: 130] [Impact Index Per Article: 32.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2020] [Revised: 10/06/2020] [Accepted: 10/08/2020] [Indexed: 12/14/2022] Open
Abstract
Psoriasis is an immune cell-mediated inflammatory skin disease. The interleukin (IL)23/IL17 axis plays an important role in the development of psoriasis. The effectiveness of biologic treatments such as tumor necrosis factor (TNF)α inhibitors (infliximab, adalimumab, certolizumab pegol), IL23 inhibitors (ustekinumab, guselkumab, tildrakizumab, risankizumab), and IL17 inhibitors (secukinumab, ixekizumab, brodalumab) have verified these findings. Immune-related cells such as dendritic cells (DCs) and macrophages, in addition to Toll-like receptors and cytokines such as interferon (IFN)α, TNFα, IFNɤ, IL12, IL22, IL23, and IL17, are related to the pathogenesis of psoriasis. Here, we first review new insights regarding the pathogenesis of psoriasis, as it relates to DCs, Langerhans cells, macrophages, the signal transducer and activator of transcription 3 pathway, and aryl hydrocarbon receptor in cutaneous vascular endothelial cells. Based on these findings, we summarize currently available oral treatments and biologics. Furthermore, we describe a new treatment option including Janus kinase inhibitor, tyrosine kinase 2 inhibitor, modulator of sphingosine 1-phosphate receptor 1, and Rho-associated kinase 2 inhibitor.
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Takahashi T, Yamasaki K. Psoriasis and Antimicrobial Peptides. Int J Mol Sci 2020; 21:ijms21186791. [PMID: 32947991 PMCID: PMC7555190 DOI: 10.3390/ijms21186791] [Citation(s) in RCA: 62] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2020] [Revised: 09/12/2020] [Accepted: 09/14/2020] [Indexed: 02/07/2023] Open
Abstract
Psoriasis is a systemic inflammatory disease caused by crosstalk between various cells such as T cells, neutrophils, dendritic cells, and keratinocytes. Antimicrobial peptides (AMPs) such as β-defensin, S100, and cathelicidin are secreted from these cells and activate the innate immune system through various mechanisms to induce inflammation, thus participating in the pathogenesis of psoriasis. In particular, these antimicrobial peptides enhance the binding of damage-associated molecular patterns such as self-DNA and self-RNA to their receptors and promote the secretion of interferon from activated plasmacytoid dendritic cells and keratinocytes to promote inflammation in psoriasis. Neutrophil extracellular traps (NETs), complexes of self-DNA and proteins including LL-37 released from neutrophils in psoriatic skin, induce Th17. Activated myeloid dendritic cells secrete a mass of inflammatory cytokines such as IL-12 and IL-23 in psoriasis, which is indispensable for the proliferation and survival of T cells that produce IL-17. AMPs enhance the production of some of Th17 and Th1 cytokines and modulate receptors and cellular signaling in psoriasis. Inflammation induced by DAMPs, including self-DNA and RNA released due to microinjuries or scratches, and the enhanced recognition of DAMPs by AMPs, may be involved in the mechanism underlying the Köbner phenomenon in psoriasis.
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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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Pahar B, Madonna S, Das A, Albanesi C, Girolomoni G. Immunomodulatory Role of the Antimicrobial LL-37 Peptide in Autoimmune Diseases and Viral Infections. Vaccines (Basel) 2020; 8:E517. [PMID: 32927756 PMCID: PMC7565865 DOI: 10.3390/vaccines8030517] [Citation(s) in RCA: 61] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2020] [Revised: 09/04/2020] [Accepted: 09/07/2020] [Indexed: 12/11/2022] Open
Abstract
Antimicrobial peptides (AMPs) are produced by neutrophils, monocytes, and macrophages, as well as epithelial cells, and are an essential component of innate immunity system against infection, including several viral infections. AMPs, in particular the cathelicidin LL-37, also exert numerous immunomodulatory activities by inducing cytokine production and attracting and regulating the activity of immune cells. AMPs are scarcely expressed in normal skin, but their expression increases when skin is injured by external factors, such as trauma, inflammation, or infection. LL-37 complexed to self-DNA acts as autoantigen in psoriasis and lupus erythematosus (LE), where it also induces production of interferon by plasmocytoid dendritic cells and thus initiates a cascade of autocrine and paracrine processes, leading to a disease state. In these disorders, epidermal keratinocytes express high amounts of AMPs, which can lead to uncontrolled inflammation. Similarly, LL-37 had several favorable and unfavorable roles in virus replication and disease pathogenesis. Targeting the antiviral and immunomodulatory functions of LL-37 opens a new approach to limit virus dissemination and the progression of disease.
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Affiliation(s)
- Bapi Pahar
- Division of Comparative Pathology, Tulane National Primate Research Center, Covington, LA 70433, USA
- Department of Microbiology and Immunology, Tulane University School of Medicine, New Orleans, LA 70118, USA
| | - Stefania Madonna
- IDI-IRCCS, Dermopathic Institute of the Immaculate IDI, 00167 Rome, Italy; (S.M.); (C.A.)
| | - Arpita Das
- Division of Microbiology, Tulane National Primate Research Center, Covington, LA 70433, USA;
| | - Cristina Albanesi
- IDI-IRCCS, Dermopathic Institute of the Immaculate IDI, 00167 Rome, Italy; (S.M.); (C.A.)
| | - Giampiero Girolomoni
- Section of Dermatology, Department of Medicine, University of Verona, 37126 Verona, Italy;
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37
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Liang W, Diana J. The Dual Role of Antimicrobial Peptides in Autoimmunity. Front Immunol 2020; 11:2077. [PMID: 32983158 PMCID: PMC7492638 DOI: 10.3389/fimmu.2020.02077] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2020] [Accepted: 07/30/2020] [Indexed: 12/17/2022] Open
Abstract
Autoimmune diseases (AiDs) are characterized by the destruction of host tissues by the host immune system. The etiology of AiDs is complex, with the implication of multiple genetic defects and various environmental factors (pathogens, antibiotic use, pollutants, stress, and diet). The interaction between these two compartments results in the rupture of tolerance against self-antigens and the unwanted activation of the immune system. Thanks to animal models, the immunopathology of many AiDs is well described, with the implication of both the innate and adaptive immune systems. This progress toward the understanding of AiDs led to several therapies tested in patients. However, the results from these clinical trials have not been satisfactory, from reversing the course of AiDs to preventing them. The need for a cure has prompted many investigators to explore alternative aspects in the immunopathology of these diseases. Among these new aspects, the role of antimicrobial host defense peptides (AMPs) is growing. Indeed, beyond their antimicrobial activity, AMPs are potent immunomodulatory molecules and consequently are implicated in the development of numerous AiDs. Importantly, according to the disease considered, AMPs appear to play a dual role in autoimmunity with either anti- or pro-inflammatory abilities. Here, we aimed to summarize the current knowledge about the role of AMPs in the development of AiDs and attempt to provide some hypotheses explaining their dual role. Definitely, a complete understanding of this aspect is mandatory before the design of AMP-based therapies against AiDs.
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Affiliation(s)
- Wenjie Liang
- Centre National de la Recherche Scientifique (CNRS), Institut Necker Enfants Malades, Institut National de la Santé et de la Recherche Médicale (INSERM), Université de Paris, Paris, France
| | - Julien Diana
- Centre National de la Recherche Scientifique (CNRS), Institut Necker Enfants Malades, Institut National de la Santé et de la Recherche Médicale (INSERM), Université de Paris, Paris, France
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38
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Kopfnagel V, Dreyer S, Baumert K, Stark M, Harder J, Hofmann K, Kleine M, Buch A, Sodeik B, Werfel T. RNase 7 Promotes Sensing of Self-DNA by Human Keratinocytes and Activates an Antiviral Immune Response. J Invest Dermatol 2020; 140:1589-1598.e3. [DOI: 10.1016/j.jid.2019.09.029] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2018] [Revised: 09/04/2019] [Accepted: 09/19/2019] [Indexed: 12/01/2022]
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Lee EY, Srinivasan Y, de Anda J, Nicastro LK, Tükel Ç, Wong GCL. Functional Reciprocity of Amyloids and Antimicrobial Peptides: Rethinking the Role of Supramolecular Assembly in Host Defense, Immune Activation, and Inflammation. Front Immunol 2020; 11:1629. [PMID: 32849553 PMCID: PMC7412598 DOI: 10.3389/fimmu.2020.01629] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2020] [Accepted: 06/17/2020] [Indexed: 12/15/2022] Open
Abstract
Pathological self-assembly is a concept that is classically associated with amyloids, such as amyloid-β (Aβ) in Alzheimer's disease and α-synuclein in Parkinson's disease. In prokaryotic organisms, amyloids are assembled extracellularly in a similar fashion to human amyloids. Pathogenicity of amyloids is attributed to their ability to transform into several distinct structural states that reflect their downstream biological consequences. While the oligomeric forms of amyloids are thought to be responsible for their cytotoxicity via membrane permeation, their fibrillar conformations are known to interact with the innate immune system to induce inflammation. Furthermore, both eukaryotic and prokaryotic amyloids can self-assemble into molecular chaperones to bind nucleic acids, enabling amplification of Toll-like receptor (TLR) signaling. Recent work has shown that antimicrobial peptides (AMPs) follow a strikingly similar paradigm. Previously, AMPs were thought of as peptides with the primary function of permeating microbial membranes. Consistent with this, many AMPs are facially amphiphilic and can facilitate membrane remodeling processes such as pore formation and fusion. We show that various AMPs and chemokines can also chaperone and organize immune ligands into amyloid-like ordered supramolecular structures that are geometrically optimized for binding to TLRs, thereby amplifying immune signaling. The ability of amphiphilic AMPs to self-assemble cooperatively into superhelical protofibrils that form structural scaffolds for the ordered presentation of immune ligands like DNA and dsRNA is central to inflammation. It is interesting to explore the notion that the assembly of AMP protofibrils may be analogous to that of amyloid aggregates. Coming full circle, recent work has suggested that Aβ and other amyloids also have AMP-like antimicrobial functions. The emerging perspective is one in which assembly affords a more finely calibrated system of recognition and response: the detection of single immune ligands, immune ligands bound to AMPs, and immune ligands spatially organized to varying degrees by AMPs, result in different immunologic outcomes. In this framework, not all ordered structures generated during multi-stepped AMP (or amyloid) assembly are pathological in origin. Supramolecular structures formed during this process serve as signatures to the innate immune system to orchestrate immune amplification in a proportional, situation-dependent manner.
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Affiliation(s)
- Ernest Y Lee
- Department of Bioengineering, University of California, Los Angeles, Los Angeles, CA, United States.,UCLA-Caltech Medical Scientist Training Program, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA, United States
| | - Yashes Srinivasan
- Department of Bioengineering, University of California, Los Angeles, Los Angeles, CA, United States
| | - Jaime de Anda
- Department of Bioengineering, University of California, Los Angeles, Los Angeles, CA, United States
| | - Lauren K Nicastro
- Department of Microbiology and Immunology, Lewis Katz School of Medicine, Temple University, Philadelphia, PA, United States
| | - Çagla Tükel
- Department of Microbiology and Immunology, Lewis Katz School of Medicine, Temple University, Philadelphia, PA, United States
| | - Gerard C L Wong
- Department of Bioengineering, University of California, Los Angeles, Los Angeles, CA, United States.,Department of Chemistry and Biochemistry, University of California, Los Angeles, Los Angeles, CA, United States.,California Nano Systems Institute, University of California, Los Angeles, Los Angeles, CA, United States
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Di Domizio J, Belkhodja C, Chenuet P, Fries A, Murray T, Mondéjar PM, Demaria O, Conrad C, Homey B, Werner S, Speiser DE, Ryffel B, Gilliet M. The commensal skin microbiota triggers type I IFN-dependent innate repair responses in injured skin. Nat Immunol 2020; 21:1034-1045. [PMID: 32661363 DOI: 10.1038/s41590-020-0721-6] [Citation(s) in RCA: 82] [Impact Index Per Article: 20.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2019] [Accepted: 05/27/2020] [Indexed: 01/25/2023]
Abstract
Skin wounds heal by coordinated induction of inflammation and tissue repair, but the initiating events are poorly defined. Here we uncover a fundamental role of commensal skin microbiota in this process and show that it is mediated by the recruitment and the activation of type I interferon (IFN)-producing plasmacytoid DC (pDC). Commensal bacteria colonizing skin wounds trigger activation of neutrophils to express the chemokine CXCL10, which recruits pDC and acts as an antimicrobial protein to kill exposed microbiota, leading to the formation of CXCL10-bacterial DNA complexes. These complexes and not complexes with host-derived DNA activate pDC to produce type I IFNs, which accelerate wound closure by triggering skin inflammation and early T cell-independent wound repair responses, mediated by macrophages and fibroblasts that produce major growth factors required for healing. These findings identify a key function of commensal microbiota in driving a central innate wound healing response of the skin.
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Affiliation(s)
- Jeremy Di Domizio
- Department of Dermatology, CHUV University Hospital, University of Lausanne, Lausanne, Switzerland
| | - Cyrine Belkhodja
- Department of Dermatology, CHUV University Hospital, University of Lausanne, Lausanne, Switzerland
| | - Pauline Chenuet
- Laboratory of Experimental and Molecular Immunology and Neurogenetics, UMR 7355 CNRS-University of Orleans, Orleans, France
| | - Anissa Fries
- Department of Dermatology, CHUV University Hospital, University of Lausanne, Lausanne, Switzerland
| | - Timothy Murray
- Department of Oncology, CHUV University Hospital, University of Lausanne, Lausanne, Switzerland
| | - Paula Marcos Mondéjar
- Department of Oncology, CHUV University Hospital, University of Lausanne, Lausanne, Switzerland
| | - Olivier Demaria
- Department of Dermatology, CHUV University Hospital, University of Lausanne, Lausanne, Switzerland
| | - Curdin Conrad
- Department of Dermatology, CHUV University Hospital, University of Lausanne, Lausanne, Switzerland
| | - Bernhard Homey
- Department of Dermatology, Medical Faculty, Heinrich-Heine-University, Duesseldorf, Germany
| | - Sabine Werner
- ETH Zurich, Institute of Molecular Health Sciences, Zurich, Switzerland
| | - Daniel E Speiser
- Department of Oncology, CHUV University Hospital, University of Lausanne, Lausanne, Switzerland
| | - Bernhard Ryffel
- Laboratory of Experimental and Molecular Immunology and Neurogenetics, UMR 7355 CNRS-University of Orleans, Orleans, France.,Division of Immunology, Department of Pathology, Institute of Infectious Disease and Molecular Medicine, Health Sciences Faculty, University of Cape Town, and South Africa Medical Research Council, Cape Town, South Africa
| | - Michel Gilliet
- Department of Dermatology, CHUV University Hospital, University of Lausanne, Lausanne, Switzerland.
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41
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Shelley JR, Davidson DJ, Dorin JR. The Dichotomous Responses Driven by β-Defensins. Front Immunol 2020; 11:1176. [PMID: 32595643 PMCID: PMC7304343 DOI: 10.3389/fimmu.2020.01176] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2020] [Accepted: 05/13/2020] [Indexed: 12/16/2022] Open
Abstract
Defensins are short, rapidly evolving, cationic antimicrobial host defence peptides with a repertoire of functions, still incompletely realised, that extends beyond direct microbial killing. They are released or secreted at epithelial surfaces, and in some cases, from immune cells in response to infection and inflammation. Defensins have been described as endogenous alarmins, alerting the body to danger and responding to inflammatory signals by promoting both local innate and adaptive systemic immune responses. However, there is now increasing evidence that they exert variable control on the response to danger; creating a dichotomous response that can suppress inflammation in some circumstances but exacerbate the response to danger and damage in others and, at higher levels, lead to a cytotoxic effect. Focussing in this review on human β-defensins, we discuss the evidence for their functions as proinflammatory, immune activators amplifying the response to infection or damage signals and/or as mediators of resolution of damage, contributing to a return to homeostasis. Finally, we consider their involvement in the development of autoimmune diseases.
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Affiliation(s)
- Jennifer R Shelley
- Centre for Inflammation Research, The University of Edinburgh, Edinburgh BioQuarter, Edinburgh, Scotland
| | - Donald J Davidson
- Centre for Inflammation Research, The University of Edinburgh, Edinburgh BioQuarter, Edinburgh, Scotland
| | - Julia R Dorin
- Centre for Inflammation Research, The University of Edinburgh, Edinburgh BioQuarter, Edinburgh, Scotland
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Abstract
Psoriasis is chronic, immune-mediated, inflammatory disease with a multifactorial etiology that affects the skin tissue and causes the appearance of dry and scaly lesions of anywhere on the body. The study of the pathophysiology of psoriasis reveals a network of immune cells that, together with their cytokines, initiates a chronic inflammatory response. Previously attributed to T helper (Th)1 cytokines, currently the Th17 cytokine family is the major effector in the pathogenesis of psoriatic disease and strongly influences the inflammatory pattern established during the disease activity. In addition, the vast network of cells that orchestrates the pathophysiology makes psoriasis complex to study. Along with this, variations in genes that code the cytokines make psoriasis more clinically heterogeneous and present a challenge for the development of drugs that can be used in the treatment of the patients with this disease. Therefore, it is important to clarify the mechanisms by which the cytokines are involved in the pathophysiology of psoriasis and how this knowledge is translated to the medical practice.
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Affiliation(s)
| | - Edna Maria Vissoci Reiche
- Research Laboratory in Applied Immunology, State University of Londrina, Paraná, Brazil; Department of Pathology, Clinical Analysis and Toxicology, State University of Londrina, Paraná, Brazil
| | - Andréa Name Colado Simão
- Research Laboratory in Applied Immunology, State University of Londrina, Paraná, Brazil; Department of Pathology, Clinical Analysis and Toxicology, State University of Londrina, Paraná, Brazil.
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El-Hamd MA, El Saied ARA, Ahmed SH, Ibrahim HM, Hegazy EM. Effect of narrow-band ultraviolet B phototherapy, methotrexate, and combined narrow-band ultraviolet B phototherapy with methotrexate on serum cathelicidin and vitamin D in patients with psoriasis vulgaris. J DERMATOL TREAT 2020; 33:408-414. [PMID: 32297558 DOI: 10.1080/09546634.2020.1757018] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
Objective: This study aimed to evaluate the efficacy of narrow-band ultraviolet B (NB-UVB) phototherapy, methotrexate, and combined NB-UVB phototherapy with methotrexate in the treatment of psoriasis vulgaris and to assess their effects on serum cathelicidin and vitamin D.Methods: This study was conducted on 60 patients with psoriasis vulgaris. They were divided into three groups (20 patients each); Group (A) was treated with NB-UVB phototherapy. Group (B) was treated with methotrexate. Group (C) was treated with combined NB-UVB phototherapy with methotrexate. Patients were assessed with Psoriasis Area and Severity Index (PASI score), serum cathelicidin and vitamin D at the first visit and after three months of treatments.Results: The highest mean PASI score percent improvement was reported in the combined NB-UVB phototherapy with methotrexate (92%). There was a significant increase in serum vitamin D after treatments with NB-UVB phototherapy and combined NB-UVB phototherapy with methotrexate (p < .001). There was a significant decrease in cathelicidin after three months of treatment with combined NB-UVB phototherapy with methotrexate (p < .01).Conclusion: This study could contribute to the hypothesis considering the role of cathelicidin and vitamin D in the pathogenesis of psoriasis. The combined NB-UVB phototherapy with methotrexate had the highest clinical improvement of psoriasis vulgaris.
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Affiliation(s)
- Mohammed Abu El-Hamd
- Department of Dermatology, Venereology and Andrology, Faculty of Medicine, Sohag University, Sohag, Egypt
| | - Abdel Rahman A El Saied
- Department of Clinical and Chemical pathology, Faculty of Medicine, South Valley University, Qena, Egypt
| | - Sohier Hassan Ahmed
- Department of Dermatology, Venereology and Andrology, Faculty of Medicine, South Valley University, Qena, Egypt
| | - Hassan Mohamed Ibrahim
- Department of Dermatology, Venereology and Andrology, Faculty of Medicine, South Valley University, Qena, Egypt
| | - Eisa Mohamed Hegazy
- Department of Dermatology, Venereology and Andrology, Faculty of Medicine, South Valley University, Qena, Egypt
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Human Defensins: A Novel Approach in the Fight against Skin Colonizing Staphylococcus a ureus. Antibiotics (Basel) 2020; 9:antibiotics9040198. [PMID: 32326312 PMCID: PMC7235756 DOI: 10.3390/antibiotics9040198] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2020] [Revised: 04/15/2020] [Accepted: 04/20/2020] [Indexed: 12/13/2022] Open
Abstract
Staphylococcus aureus is a microorganism capable of causing numerous diseases of the human skin. The incidence of S. aureus skin infections reflects the conflict between the host skin′s immune defenses and the S. aureus’ virulence elements. Antimicrobial peptides (AMPs) are small protein molecules involved in numerous biological activities, playing a very important role in the innate immunity. They constitute the defense of the host′s skin, which prevents harmful microorganisms from entering the epithelial barrier, including S. aureus. However, S. aureus uses ambiguous mechanisms against host defenses by promoting colonization and skin infections. Our review aims to provide a reference collection on host-pathogen interactions in skin disorders, including S. aureus infections and its resistance to methicillin (MRSA). In addition to these, we discuss the involvement of defensins and other innate immunity mediators (i.e., toll receptors, interleukin-1, and interleukin-17), involved in the defense of the host against the skin disorders caused by S. aureus, and then focus on the evasion mechanisms developed by the pathogenic microorganism under analysis. This review provides the “state of the art” on molecular mechanisms underlying S. aureus skin infection and the pharmacological potential of AMPs as a new therapeutic strategy, in order to define alternative directions in the fight against cutaneous disease.
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45
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Martins AM, Ascenso A, Ribeiro HM, Marto J. The Brain-Skin Connection and the Pathogenesis of Psoriasis: A Review with a Focus on the Serotonergic System. Cells 2020; 9:E796. [PMID: 32224981 PMCID: PMC7226493 DOI: 10.3390/cells9040796] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2020] [Revised: 03/17/2020] [Accepted: 03/24/2020] [Indexed: 12/12/2022] Open
Abstract
Psoriasis is a common non-communicable chronic immune-mediated skin disease, affecting approximately 125 million people in the world. Its pathogenesis results from a combination of genetic and environmental factors. The pathogenesis of psoriasis seems to be driven by the interaction between innate immune cells, adaptive immune cells and keratinocytes, in a process mediated by cytokines (including interleukins (IL)-6, IL-17 and IL-22, interferon and tumor necrosis factor) and other signaling molecules. This leads to an inflammatory process with increased proliferation of epidermal cells, neo-angiogenesis and infiltration of dendritic cells in the skin. Dysfunctional de novo glucocorticoid synthesis in psoriatic keratinocytes and the skin microbiome have also been suggested as mediators in the pathogenesis of this disease. To understand psoriasis, it is essential to comprehend the processes underlying the skin immunity and neuroendocrinology. This review paper focuses on the skin as a neuroendocrine organ and summarizes what is known about the skin immune system, the brain-skin connection and the role played by the serotonergic system in skin. Subsequently, the alterations of neuroimmune processes and of the serotonergic system in psoriatic skin are discussed, as well as, briefly, the genetic basis of psoriasis.
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Affiliation(s)
| | | | | | - Joana Marto
- Research Institute for Medicines (iMed.ULisboa), Faculdade de Farmácia da Universidade de Lisboa, Av. Professor Gama Pinto, 1649-003 Lisboa, Portugal; (A.M.M.); (A.A.); (H.M.R.)
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46
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Shin JU, Abaci HE, Herron L, Guo Z, Sallee B, Pappalardo A, Jackow J, Wang EHC, Doucet Y, Christiano AM. Recapitulating T cell infiltration in 3D psoriatic skin models for patient-specific drug testing. Sci Rep 2020; 10:4123. [PMID: 32139717 PMCID: PMC7057979 DOI: 10.1038/s41598-020-60275-0] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2019] [Accepted: 02/05/2020] [Indexed: 12/31/2022] Open
Abstract
Drug screening studies for inflammatory skin diseases are currently performed using model systems that only partially recapitulate human diseased skin. Here, we developed a new strategy to incorporate T cells into human 3D skin constructs (HSCs), which enabled us to closely monitor and quantitate T cell responses. We found that the epidermis promotes the activation and infiltration of T cells into the skin, and provides a directional cue for their selective migration towards the epidermis. We established a psoriatic HSC (pHSC) by incorporating polarized Th1/Th17 cells or CCR6+CLA+ T cells derived from psoriasis patients into the constructs. These pHSCs showed a psoriatic epidermal phenotype and characteristic cytokine profiles, and responded to various classes of psoriasis drugs, highlighting the potential utility of our model as a drug screening platform. Taken together, we developed an advanced immunocompetent 3D skin model to investigate epidermal-T cell interactions and to understand the pathophysiology of inflammatory skin diseases in a human-relevant and patient-specific context.
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Affiliation(s)
- Jung U Shin
- Department of Dermatology, Columbia University Medical Center, NY, New York, USA
- Department of Dermatology, CHA Bundang Medical Center, CHA University, Seongnam, Republic of Korea
| | - Hasan E Abaci
- Department of Dermatology, Columbia University Medical Center, NY, New York, USA.
| | - Lauren Herron
- Department of Dermatology, Columbia University Medical Center, NY, New York, USA
| | - Zongyou Guo
- Department of Dermatology, Columbia University Medical Center, NY, New York, USA
| | - Brigitte Sallee
- Department of Dermatology, Columbia University Medical Center, NY, New York, USA
| | - Alberto Pappalardo
- Department of Dermatology, Columbia University Medical Center, NY, New York, USA
| | - Joanna Jackow
- Department of Dermatology, Columbia University Medical Center, NY, New York, USA
| | - Eddy Hsi Chun Wang
- Department of Dermatology, Columbia University Medical Center, NY, New York, USA
| | - Yanne Doucet
- Department of Dermatology, Columbia University Medical Center, NY, New York, USA
| | - Angela M Christiano
- Department of Dermatology, Columbia University Medical Center, NY, New York, USA.
- Department of Genetics & Development, Columbia University, New York, NY, USA.
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47
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Khodot EN, Shevelev AB, Shibaeva AV, Smirnova MS, Pozdniakova NV, Ryabaya OO, Bogdanova ES, Guseva MA, Volnukhin VA, Kuzmin VA. Study of the Phototoxic Effect of the Novel Substituted Derivatives of Furodihydroquinoline, Putative Medicines for Phototherapy of Psoriasis. RUSSIAN JOURNAL OF BIOORGANIC CHEMISTRY 2020. [DOI: 10.1134/s1068162020020119] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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48
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Frasca L, Lande R. Toll-like receptors in mediating pathogenesis in systemic sclerosis. Clin Exp Immunol 2020; 201:14-24. [PMID: 32048277 DOI: 10.1111/cei.13426] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/06/2020] [Indexed: 02/06/2023] Open
Abstract
Toll-like receptors (TLRs) are evolutionarily conserved receptors essential for the host defence against pathogens. Both immune and non-immune cells can express TLRs, although at different levels. Systemic sclerosis (SSc) is a chronic disease in which autoimmunity, dysregulated profibrotic mediator release and activation of fibroblasts lead to dysregulated collagen deposition and fibrosis. There is now increasing knowledge that the innate immune system and, in particular, TLRs take a part in SSc pathogenesis. The list of endogenous ligands that can stimulate TLRs in SSc is growing: these ligands represent specific danger-associated molecular patterns (DAMPs), involved either in the initiation or the perpetuation of inflammation, and in the release of factors that sustain the fibrotic process or directly stimulate the cells that produce collagen and the endothelial cells. This review reports evidences concerning TLR signalling involvement in SSc. We report the new DAMPs, as well as the TLR-linked pathways involved in disease, with emphasis on type I interferon signature in SSc, the role of plasmacytoid dendritic cells (pDCs) and platelets. The dissection of the contribution of all these pathways to disease, and their correlation with the disease status, as well as their values as prognostic tools, can help to plan timely intervention and design new drugs for more appropriate therapeutic strategies.
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Affiliation(s)
- L Frasca
- National Centre for Drug Research and Evaluation, Pharmacological Research and Experimental Therapy Unit, Istituto Superiore di Sanità, Rome, Italy
| | - R Lande
- National Centre for Drug Research and Evaluation, Pharmacological Research and Experimental Therapy Unit, Istituto Superiore di Sanità, Rome, Italy
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49
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Busold S, Nagy NA, Tas SW, van Ree R, de Jong EC, Geijtenbeek TBH. Various Tastes of Sugar: The Potential of Glycosylation in Targeting and Modulating Human Immunity via C-Type Lectin Receptors. Front Immunol 2020; 11:134. [PMID: 32117281 PMCID: PMC7019010 DOI: 10.3389/fimmu.2020.00134] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2019] [Accepted: 01/20/2020] [Indexed: 12/31/2022] Open
Abstract
C-type lectin receptors (CLRs) are important in several immune regulatory processes. These receptors recognize glycans expressed by host cells or by pathogens. Whereas pathogens are recognized through their glycans, which leads to protective immunity, aberrant cellular glycans are now increasingly recognized as disease-driving factors in cancer, auto-immunity, and allergy. The vast variety of glycan structures translates into a wide spectrum of effects on the immune system ranging from immune suppression to hyper-inflammatory responses. CLRs have distinct expression patterns on antigen presenting cells (APCs) controlling their role in immunity. CLRs can also be exploited to selectively target specific APCs, modulate immune responses and enhance antigen presentation. Here we will discuss the role of glycans and their receptors in immunity as well as potential strategies for immune modulation. A special focus will be given to different dendritic cell subsets as these APCs are crucial orchestrators of immune responses in infections, cancer, auto-immunity and allergies. Furthermore, we will highlight the potential use of nanoscale lipid bi-layer structures (liposomes) in targeted immunotherapy.
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Affiliation(s)
- Stefanie Busold
- Department of Experimental Immunology, Amsterdam University Medical Centers, Amsterdam Institute for Infection and Immunity, University of Amsterdam, Amsterdam, Netherlands
| | - Noémi A Nagy
- Department of Experimental Immunology, Amsterdam University Medical Centers, Amsterdam Institute for Infection and Immunity, University of Amsterdam, Amsterdam, Netherlands
| | - Sander W Tas
- Department of Experimental Immunology, Amsterdam University Medical Centers, Amsterdam Institute for Infection and Immunity, University of Amsterdam, Amsterdam, Netherlands.,Department of Rheumatology and Clinical Immunology, Amsterdam University Medical Centers, Amsterdam Rheumatology and Immunology Center, University of Amsterdam, Amsterdam, Netherlands
| | - Ronald van Ree
- Department of Experimental Immunology, Amsterdam University Medical Centers, Amsterdam Institute for Infection and Immunity, University of Amsterdam, Amsterdam, Netherlands.,Department of Otorhinolaryngology, Amsterdam University Medical Centers, University of Amsterdam, Amsterdam, Netherlands
| | - Esther C de Jong
- Department of Experimental Immunology, Amsterdam University Medical Centers, Amsterdam Institute for Infection and Immunity, University of Amsterdam, Amsterdam, Netherlands
| | - Teunis B H Geijtenbeek
- Department of Experimental Immunology, Amsterdam University Medical Centers, Amsterdam Institute for Infection and Immunity, University of Amsterdam, Amsterdam, Netherlands
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50
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Umnyakova ES, Zharkova MS, Berlov MN, Shamova OV, Kokryakov VN. Human antimicrobial peptides in autoimmunity. Autoimmunity 2020; 53:137-147. [PMID: 31914804 DOI: 10.1080/08916934.2020.1711517] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Antimicrobial peptides (AMPs) were firstly discovered as cytotoxic substances that killed bacteria. Later they were described as biologically active peptides that are able not only to kill invaders but also to modulate host immunity. In particular, it is shown that human antimicrobial peptides are able to influence the activity of different innate and adaptive immunity components, thus, obviously, they also participate in autoimmune processes. In this review we discuss the nature of human AMPs and analyze their role in such autoimmune disorders like type 1 diabetes mellitus, rheumatoid arthritis, systemic lupus erythematosus, psoriasis, Crohn's disease and sarcoidosis. These peptides were shown to have a "double-sided" influence on the autoimmune disease pathogenesis. Thus, described facts should be taken into account for the development of new pharmaceutical agents to cure patients with autoimmune disorders. These agents could derive from natural antimicrobial peptides that in some cases modulate immune response. For example, it was shown that human AMPs are able to modulate complement system dysregulation of which is known to be one of the most dangerous pathogenic factors during autoimmune processes.
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Affiliation(s)
- Ekaterina S Umnyakova
- Department of General Pathology and Pathophysiology, Institute of Experimental Medicine, Saint Petersburg, Russia
| | - Maria S Zharkova
- Department of General Pathology and Pathophysiology, Institute of Experimental Medicine, Saint Petersburg, Russia
| | - Mikhail N Berlov
- Department of General Pathology and Pathophysiology, Institute of Experimental Medicine, Saint Petersburg, Russia
| | - Olga V Shamova
- Department of General Pathology and Pathophysiology, Institute of Experimental Medicine, Saint Petersburg, Russia
| | - Vladimir N Kokryakov
- Department of General Pathology and Pathophysiology, Institute of Experimental Medicine, Saint Petersburg, Russia.,Faculty of Biology, Department of Biochemistry, Saint Petersburg State University, Saint Petersburg, Russia
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