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Seçme M, Dodurga Y, Demirkan NÇ, Kaçar N, Günel NS, Açıkbaş İ. Determination of T-cell clonality and expression profiles of Toll-like receptors signaling pathway genes and related miRNAs in patients with mycosis fungoides. Gene 2024; 891:147825. [PMID: 37748629 DOI: 10.1016/j.gene.2023.147825] [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: 09/18/2023] [Accepted: 09/22/2023] [Indexed: 09/27/2023]
Abstract
Cutaneous T-cell lymphomas (CTCL) encompass a group of diseases characterized by the presence of malignant clonal CD4+ T lymphocytes in the skin. Mycosis fungoides (MF) is the most prevalent form of CTCL, accounting for approximately 60 % of cutaneous T-cell lymphomas and 50 % of all primary cutaneous lymphomas. Despite ongoing research, the precise pathogenesis of MF remains incompletely understood. Toll-like receptors (TLRs) have the ability to specifically recognize ligands, subsequently induce the expression of diverse genes and activate innate immunity within the cell. Furthermore, miRNAs play a crucial role in regulating various aspects of immune cell function. The aim of our study was to explore the potential roles of TLRs and the genes implicated in their signal transduction, along with the expression status of miRNAs in the mechanisms underlying MF. Additionally, we assessed the clonal status and compared it with clinicopathological data using a T-cell clonality assay. To determine the expression status of TLR pathway genes and miRNAs, we conducted RT-PCR analysis on 52 MF samples and 50 control paraffin block materials. Pathway analysis were conducted using the KEGG database. T-cell receptor (TCR) gamma clonality changes were evaluated. Results from the study revealed increased expressions of TLR-1, -4, -8, IRF7, TRAF3, MEK1, MEK2, Elk1, NFkB, hsa-miR-21-5p, and hsa-miR-155-5p, as well as decreased expressions of hsa-miR-130a-3p, hsa-miR-210-3p, and hsa-let-7e-5p in the MF group. TCR gamma clonal change analysis demonstrated that 55.5 % of the analysed DNAs exhibited monoclonal and biallelic patterns, while 45.5 % displayed polyclonality. These findings collectively suggest the potential influence and therapeutic possibilities of the TLR signalling pathway in the molecular pathogenesis of MF.
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Affiliation(s)
- Mücahit Seçme
- Department of Medical Biology, Faculty of Medicine, Ordu University, Ordu, Turkey.
| | - Yavuz Dodurga
- Department of Medical Biology, Faculty of Medicine, Pamukkale University, Denizli, Turkey
| | - Neşe Çallı Demirkan
- Department of Pathology, Faculty of Medicine, Pamukkale University, Denizli, Turkey
| | - Nida Kaçar
- Department of Dermatology, Faculty of Medicine, Pamukkale University, Denizli, Turkey
| | - Nur Selvi Günel
- Department of Medical Biology, Faculty of Medicine, Ege University, İzmir, Turkey
| | - İbrahim Açıkbaş
- Department of Medical Biology, Faculty of Medicine, Pamukkale University, Denizli, Turkey
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Madkour FA, Abdellatif AM, Osman YA, Kandyel RM. Histological and ultrastructural characterization of the dorso-ventral skin of the juvenile and the adult starry puffer fish (Arothron stellatus, Anonymous 1798). BMC Vet Res 2023; 19:221. [PMID: 37875870 PMCID: PMC10598996 DOI: 10.1186/s12917-023-03784-0] [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: 02/07/2023] [Accepted: 10/10/2023] [Indexed: 10/26/2023] Open
Abstract
BACKGROUND The starry puffer fish (Arothron stellatus, Anonymous, 1798) is a poisonous tetradontidae fish inhabiting the Red sea. The skin constitutes an important defense against any external effects. The study aims to characterize the dorso-ventral skin of the juvenile and the adult starry puffer fish using light and scanning electron microscopies. Twenty specimens of juvenile and adult fresh fishes were used. RESULTS The scanning electron microarchitecture of the skin of the juvenile and adult fish showed delicate irregular-shaped protrusions, and well-defined bricks-like elevations on the dorsal side and interrupted folds as well as irregular-shaped protrusions on the ventral side. In adult fish, the patterned microridges of the superficial and deep epithelial cells (keratinocytes) were larger and well-defined in the dorsal skin than in the ventral side, the contrary was seen in the juvenile fish. The microridges were arranged in a fingerprint or honeycomb patterns. The openings of the mucous cells were more numerous in the dorsal skin in both age stages but more noticeable in adult. Furthermore, the sensory cells were more dominant in the juveniles than the adults. The odontic spines were only seen in adult. Histologically, few taste buds were observed in the epidermis of the dorsal skin surface of the adult fish. Both mucous and club cells were embedded in the epidermis of the juvenile and adult fish with different shapes and sizes. Melanophores were observed at the dorsal skin of both juvenile and adult fishes while fewer numbers were noticed at the ventral surfaces. Several dermal bony plates with different shapes and sizes were demonstrated in the skin of both adult and juvenile fishes. CONCLUSION The structural variations of skin of the juvenile and adult fishes may reflect the various environmental difficulties that they confront.
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Affiliation(s)
- Fatma A Madkour
- Department of Anatomy and Embryology, Faculty of Veterinary Medicine, South Valley University, Qena, 83523, Egypt.
| | - Ahmed M Abdellatif
- Department of Anatomy and Embryology, Faculty of Veterinary Medicine, Mansoura University, Mansoura, 35516, Egypt
| | - Yassein A Osman
- Department of Fisheries, Fish Population Dynamic Lab, National Institute of Oceanography and Fisheries, Hurghada, Red Sea, Egypt
| | - Ramadan M Kandyel
- Department of Zoology, Faculty of Science, Tanta University, Tanta, Egypt
- Department of Biology, Faculty of Arts and Sciences, Najran University, Najran, Saudi Arabia
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3
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Halasi M, Talmon A, Tal Y, Yosipovitch G, Adini I. Dark pigmentation and related low FMOD expression increase IL-3 and facilitate plasmacytoid dendritic cell maturation. Clin Immunol 2023; 251:109638. [PMID: 37149118 DOI: 10.1016/j.clim.2023.109638] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2023] [Revised: 05/01/2023] [Accepted: 05/03/2023] [Indexed: 05/08/2023]
Abstract
According to epidemiological research, skin autoimmune diseases are more prevalent among black Americans. We postulated that pigment-producing melanocytes may contribute to local immune regulation in the microenvironment. We examined murine epidermal melanocytes in vitro to determine the role of pigment production in immune responses mediated by dendritic cell (DC) activation. Our study revealed that darkly pigmented melanocytes produce more IL-3 and the pro-inflammatory cytokines, IL-6 and TNF-α, and consequently induce plasmacytoid DC (pDC) maturation. Additionally, we demonstrate that low pigment-associated fibromodulin (FMOD) interferes with cytokine secretion and subsequent pDC maturation.
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Affiliation(s)
- Marianna Halasi
- Harvard Medical School, Department of Surgery, Center for Engineering in Medicine & Surgery, Massachusetts General Hospital, 51 Blossom Street, Boston, MA 02114, United States of America
| | - Aviv Talmon
- Allergy and Clinical Immunology Unit, Department of Medicine, Hadassah Medical Organization, Faculty of Medicine, Hebrew University of Jerusalem, Israel
| | - Yuval Tal
- Allergy and Clinical Immunology Unit, Department of Medicine, Hadassah Medical Organization, Faculty of Medicine, Hebrew University of Jerusalem, Israel
| | - Gil Yosipovitch
- Dr. Phillip Frost Department of Dermatology and Cutaneous Surgery and Miami Itch Ctr, University of Miami, FL, USA
| | - Irit Adini
- Harvard Medical School, Department of Surgery, Center for Engineering in Medicine & Surgery, Massachusetts General Hospital, 51 Blossom Street, Boston, MA 02114, United States of America.
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4
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Berardesca E, Bonfigli A, Cartigliani C, Kerob D, Tan J. A Randomized, Controlled Clinical Trial of a Dermocosmetic Containing Vichy Volcanic Mineralizing Water and Probiotic Fractions in Subjects with Rosacea Associated with Erythema and Sensitive Skin and Wearing Protective Masks. Clin Cosmet Investig Dermatol 2023; 16:71-77. [PMID: 36660190 PMCID: PMC9843703 DOI: 10.2147/ccid.s391893] [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: 09/30/2022] [Accepted: 01/05/2023] [Indexed: 01/12/2023]
Abstract
Purpose Rosacea is a common facial dermatosis, with flares induced by exposome factors. M89PF containing Vichy mineralizing water, probiotic fractions, hyaluronic acid, niacinamide and tocopherol repairs the skin barrier and reinforces skin defences against exposome factors. This study assessed the benefit of M89PF in subjects with rosacea associated with erythema and sensitive skin during the Covid-19 pandemic using protective face masks. Methods M89PF was compared to usual skin care in a randomized, split-face study, for 30 days in subjects with rosacea associated with erythema and sensitive skin. Clinical evaluations included erythema, desquamation, skin tightness, dryness, burning sensation, itching, stinging, stinging test, and local tolerability. Instrument evaluations included erythema, skin hydration and TEWL. Subject satisfaction was also assessed. Results Erythema significantly improved with M89PF at both time points (p<0.01 at D15, and p<0.001 at D30). Skin sensitivity assessed by the skin stinging test improved significantly (p<0.01) with M89PF at D30, compared to baseline and usual skin care. Skin erythema, tightness, dryness, hydration and TEWL significantly improved (p≤0.05) with M89PF at D15 and D30, versus baseline and the untreated side. Subjects were highly satisfied with M89PF at D15 and D30. Tolerance was very good in all subjects. Conclusion In subjects with rosacea, M89PF significantly reduces erythema, skin tightness, dryness and TEWL, and improves skin hydration and skin sensitivity, even when using protective masks. M89PF is well tolerated and received high satisfaction ratings. ClinicalTrialsgov No NCT05562661.
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Affiliation(s)
- Enzo Berardesca
- Phillip Frost Department of Dermatology, University of Miami, Miami, FL, USA,Correspondence: Enzo Berardesca, Phillip Frost Department of Dermatology, University of Miami, Miami, FL, USA, Tel +393486962500, Email
| | | | | | - Delphine Kerob
- International Scientific Affairs, Cosmetic Active International, Levallois-Perret, France
| | - Jerry Tan
- Department of Medicine and Windsor Clinical Research Inc Western University, Windsor, ON, Canada
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5
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Xi L, Han Y, Liu C, Liu Y, Wang Z, Wang R, Zheng Y. Sonodynamic therapy by phase-transition nanodroplets for reducing epidermal hyperplasia in psoriasis. J Control Release 2022; 350:435-447. [PMID: 36030991 DOI: 10.1016/j.jconrel.2022.08.038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2022] [Revised: 07/31/2022] [Accepted: 08/21/2022] [Indexed: 11/29/2022]
Abstract
The cross-talk between hyperproliferative keratinocytes and activated immune cells is responsible for the progression of psoriasis. The strategy to alleviate psoriasis through inhibiting the abnormal proliferation of keratinocytes remains challenging due to limited therapeutic effects and low skin penetration of drugs. Herein we designed an ultrasound-triggered phase-transition nanodroplet that could produce cavitation to enhance skin penetration and effectively generate reactive oxygen species (ROS) to induce keratinocyte apoptosis for psoriasis treatment. After ultrasound stimulation, the perfluoro-n-pentane (PFP) liquid core of the nanodroplets vaporized, and the Haematoporphyrin monomethyl ether (HMME) encapsulated in the nanodroplets generated plenty of intracellular ROS which caused the apoptosis of HaCat cells through inducing mitochondrial dysfunction. In addition, the blank nanodroplets successfully inhibited the secretion of IL-6 and TNF-α from macrophages and dendritic cells in vitro due to the anti-inflammatory effect of POPG. For the skin penetration test, the phase-transition nanodroplets could effectively accumulate in the epidermis of the skin and generate intracellular ROS. The in-vivo anti-psoriasis experiment demonstrated that the phase-transition nanodroplets relieved the symptoms of psoriasis lesion and inhibited epidermal hyperplasia through induction of cell apoptosis under ultrasound irritation. Meanwhile, the inflammatory cytokines in the skin lesion almost decreased to the normal baseline level after SDT. Collectively, this study demonstrated a new strategy to inhibit keratinocyte hyperproliferation for psoriasis management based on sonodynamic responded nanodroplets.
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Affiliation(s)
- Long Xi
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macau 999078, China
| | - Yunfeng Han
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macau 999078, China
| | - Chang Liu
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macau 999078, China
| | - Yihan Liu
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macau 999078, China
| | - Zhenping Wang
- Department of Dermatology, School of Medicine, University of California, San Diego, CA 92093, USA
| | - Ruibing Wang
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macau 999078, China
| | - Ying Zheng
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macau 999078, China.
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Jun SL, Sun J, Huo X, Feng Q, Li Y, Xie X, Geng S. Lipopolysaccharide reduces melanin synthesis in vitiligo melanocytes by regulating autophagy. Exp Dermatol 2022; 31:1579-1585. [PMID: 35733278 DOI: 10.1111/exd.14629] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2022] [Revised: 06/07/2022] [Accepted: 06/18/2022] [Indexed: 11/30/2022]
Abstract
Vitiligo is an autoimmune-related disease with a complex aetiology that involves innate immunity. Toll-like receptors (TLRs) are important parts of innate immunity and are related to a variety of autoimmune diseases, including vitiligo, through an unknown mechanism. In this study, we found that the TLR4 gene expression was increased in blood samples of patients with advanced stage vitiligo, and then we evaluated the effect of TLR4 ligand lipopolysaccharide (LPS) on melanin synthesis in a vitiligo melanocyte cell line PIG3V and along with its mechanism. LPS suppressed melanin synthesis, downregulated the expression of melanin synthesis-related proteins, and activated autophagy in vitiligo melanocytes. Inhibiting autophagy with 3-methyladenine or chloroquine blocked these effects. This suggests that LPS inhibits skin pigmentation by modulating autophagy, thus providing novel insights into the pathogenesis of vitiligo.
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Affiliation(s)
- Sun Li Jun
- Department of Dermatology, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China.,Central Laboratory of Shaanxi Provincial People's Hospital, Xi'an, Shaanxi, China
| | - Jingying Sun
- Central Laboratory of Shaanxi Provincial People's Hospital, Xi'an, Shaanxi, China
| | - Xueping Huo
- Central Laboratory of Shaanxi Provincial People's Hospital, Xi'an, Shaanxi, China
| | - Qing Feng
- Central Laboratory of Shaanxi Provincial People's Hospital, Xi'an, Shaanxi, China
| | - Yan Li
- Central Laboratory of Shaanxi Provincial People's Hospital, Xi'an, Shaanxi, China
| | - Xin Xie
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, College of Life Science, Northwest University, Xi'an, Shaanxi, China
| | - Songmei Geng
- Department of Dermatology, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China
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7
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Zhuo H, Zhang X, Li M, Zhang Q, Wang Y. Antibacterial and Anti-Inflammatory Properties of a Novel Antimicrobial Peptide Derived from LL-37. Antibiotics (Basel) 2022; 11:antibiotics11060754. [PMID: 35740160 PMCID: PMC9220503 DOI: 10.3390/antibiotics11060754] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2022] [Revised: 05/25/2022] [Accepted: 05/26/2022] [Indexed: 02/01/2023] Open
Abstract
Peri-implantitis is a pathological condition involving tissues around dental implants that are characterized by inflammation of the peri-implant mucosa and progressive loss of supporting bone. We found that the antimicrobial peptide KR-12-3 (KRIVKWIKKFLR) derived from LL-37 had antibacterial properties against Streptococcus gordonii. The purpose of this study was to evaluate its antibacterial and anti-inflammatory activities and its underlying mechanisms. We evaluated the antibacterial activities of antimicrobial peptides in planktonic and biofilm states by measuring their minimum inhibitory concentration, minimum bactericidal concentration, and biofilm susceptibility. The effects of antimicrobial peptides on the production of IL-6 and IL-8 in LPS-stimulated RAW264.7 cells were detected by enzyme-linked immunosorbent assay and other experiments, and their toxicity to MC3T3-E1 cells was also studied. While maintaining low cytotoxicity, KR-12-3 exhibited growth inhibitory effects on S. gordonii in planktonic and biofilm states. Lower concentrations of KR-12-3 treatment reduced the production of inflammatory cytokines in LPS-stimulated RAW264.8 cells. The mechanisms underlying the inhibition of biofilm formation and anti-inflammatory effects have been associated with the low expression of related genes. KR-12-3 may be used to develop an antibacterial, anti-infective, and anti-inflammatory drugs for peri-implantitis.
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8
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Vincken NLA, Welsing PMJ, Silva-Cardoso SC, Bekker CPJ, Lopes AP, Nordkamp MO, Leijten EFA, Radstake TRDJ, Angiolilli C. Suppression of IL-12/IL-23 p40 subunit in the skin and blood of psoriasis patients by Tofacitinib is dependent on active interferon-γ signaling in dendritic cells: implications for the treatment of psoriasis and interferon-driven diseases. Exp Dermatol 2022; 31:962-969. [PMID: 35297512 PMCID: PMC9313893 DOI: 10.1111/exd.14566] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2021] [Revised: 02/28/2022] [Accepted: 03/13/2022] [Indexed: 11/27/2022]
Abstract
Interleukin (IL)‐12 and IL‐23 are pro‐inflammatory cytokines produced by dendritic cells (DCs) and associated with Psoriasis (Pso) and Psoriatic Arthritis (PsA) pathogenesis. Tofacitinib, a Janus kinase inhibitor, effectively suppresses inflammatory cascades downstream the IL‐12/IL‐23 axis in Pso and PsA patients. Here, we investigated whether Tofacitinib directly regulates IL‐12/IL‐23 production in DCs, and how this regulation reflects responses to Tofacitinib in Pso patients. We treated monocyte‐derived dendritic cells and myeloid dendritic cells with Tofacitinib and stimulated cells with either lipopolysaccharide (LPS) or a combination of LPS and IFN‐γ. We assessed gene expression by qPCR, obtained skin microarray and blood Olink data and clinical parameters of Pso patients treated with Tofacitinib from public data sets. Our results indicate that in DCs co‐stimulated with LPS and IFN‐γ, but not with LPS alone, Tofacitinib leads to the decreased expression of IL‐23/IL‐12 shared subunit IL12B (p40). In Tofacitinib‐treated Pso patients, IL‐12 expression and psoriasis area and severity index (PASI) are significantly reduced in patients with higher IFN‐γ at baseline. These findings demonstrate for the first time that Tofacitinib suppresses IL‐23/IL‐12 shared subunit IL12B in DCs upon active IFN‐γ signaling, and that Pso patients with higher IFN‐γ baseline levels display improved clinical response after Tofacitinib treatment.
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Affiliation(s)
- Nanette L A Vincken
- Center for Translational Immunology, Department of Immunology, University Medical Center Utrecht, Utrecht University, Utrecht, the Netherlands.,Department of Rheumatology and Clinical Immunology, University Medical Center Utrecht, Utrecht University, Utrecht, the Netherlands
| | - Paco M J Welsing
- Department of Rheumatology and Clinical Immunology, University Medical Center Utrecht, Utrecht University, Utrecht, the Netherlands
| | - Sandra C Silva-Cardoso
- Center for Translational Immunology, Department of Immunology, University Medical Center Utrecht, Utrecht University, Utrecht, the Netherlands.,Department of Rheumatology and Clinical Immunology, University Medical Center Utrecht, Utrecht University, Utrecht, the Netherlands
| | - Cornelis P J Bekker
- Center for Translational Immunology, Department of Immunology, University Medical Center Utrecht, Utrecht University, Utrecht, the Netherlands.,Department of Rheumatology and Clinical Immunology, University Medical Center Utrecht, Utrecht University, Utrecht, the Netherlands
| | - Ana P Lopes
- Center for Translational Immunology, Department of Immunology, University Medical Center Utrecht, Utrecht University, Utrecht, the Netherlands.,Department of Rheumatology and Clinical Immunology, University Medical Center Utrecht, Utrecht University, Utrecht, the Netherlands
| | - Michel Olde Nordkamp
- Center for Translational Immunology, Department of Immunology, University Medical Center Utrecht, Utrecht University, Utrecht, the Netherlands.,Department of Rheumatology and Clinical Immunology, University Medical Center Utrecht, Utrecht University, Utrecht, the Netherlands
| | - Emmerik F A Leijten
- Center for Translational Immunology, Department of Immunology, University Medical Center Utrecht, Utrecht University, Utrecht, the Netherlands.,Department of Rheumatology and Clinical Immunology, University Medical Center Utrecht, Utrecht University, Utrecht, the Netherlands
| | - Timothy R D J Radstake
- Center for Translational Immunology, Department of Immunology, University Medical Center Utrecht, Utrecht University, Utrecht, the Netherlands.,Department of Rheumatology and Clinical Immunology, University Medical Center Utrecht, Utrecht University, Utrecht, the Netherlands
| | - Chiara Angiolilli
- Center for Translational Immunology, Department of Immunology, University Medical Center Utrecht, Utrecht University, Utrecht, the Netherlands.,Department of Rheumatology and Clinical Immunology, University Medical Center Utrecht, Utrecht University, Utrecht, the Netherlands
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9
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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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10
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Abdelsalam M, Allam SH, Zohdy M, Magdy H, Mostafa M. TLR4 gene polymorphisms in Egyptian vitiligo patients: insights into emerging association with clinical activity, family history, and response to therapy. J Genet Eng Biotechnol 2021; 19:132. [PMID: 34468896 PMCID: PMC8410933 DOI: 10.1186/s43141-021-00218-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2021] [Accepted: 07/26/2021] [Indexed: 12/13/2022]
Abstract
BACKGROUND Vitiligo is a common pigmentary disorder in which autoimmunity has been suggested to play an important role. Toll-like receptor (TLR) family are recognized different molecular structures expressed on immune cells and have been implicated in a number of autoimmune diseases (AIDs) such as vitiligo. The purpose of this study was to investigate the possible association between TLR4 gene polymorphisms: rs11536858, rs1927911, rs1927914 in Egyptian vitiligo patients and their clinical data, their response to therapy. Using PCR-RFLP for TLR4 gene polymorphisms (rs11536858, rs1927911, and rs1927914), both alleles and genotypes were determined after extraction of DNA in a case-control study of 100 vitiligo Egyptian patients and 100 matched age and sex controls. RESULTS The distribution of the protective CT genotype of rs1927914 was higher in the control group. After dividing both patients and controls into 2 age groups (below 18 and above 18 years), no significant associations between the genotypes of the selected TLR4 SNPs and the demographic and clinical data of the vitiligo patients in group 1 (below 18 years) were observed. For group 2 (above 18 years), also no significant associations were found except for the association between the CC genotype of rs1927914 and psychiatric trauma, from one side, and between the CT genotype of rs1927911 and alopecia, from the other side. The association between combined genotypes and the risk of vitiligo showed either higher frequency in patients (risky), or controls (protective), and some equal frequencies (non-significant). The association between haplotypes and risk of vitiligo in patients' group revealed the highest frequency for the risky ATT and the least frequency for ATC haplotypes. In control group, the protective GCT haplotype showed the highest frequency while the GTC and GCC showed the least frequency. No significant correlations of haplotypes with clinical and demographic data of selected patients' group were observed apart from that between ACC haplotype and family history of AIDs and between ATT haplotype and remission after phototherapy. CONCLUSIONS The significant relationship between TLR4 gene polymorphisms and vitiligo patients charcteristics clarify the role of innate immunity in pathogensis of vitiligo and its effect on the used therapies.
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Affiliation(s)
- Maha Abdelsalam
- Immunology Unit, Clinical Pathology Department, Faculty of Medicine, Mansoura University, Mansoura, Egypt.,Department of Immunology, Egypt Center for Research and Regenerative Medicine (ECRRM), Cairo, 11517, Egypt
| | - Sherihan H Allam
- Dermatology Department, Faculty of medicine, Mansoura University, Mansoura, Egypt
| | - Marwa Zohdy
- Dermatology Department, Faculty of medicine, Mansoura University, Mansoura, Egypt.
| | - Hend Magdy
- Public Health & Community Department, Faculty of medicine, Mansoura University, Mansoura, Egypt
| | - Maged Mostafa
- Immunology Unit, Clinical Pathology Department, Faculty of Medicine, Mansoura University, Mansoura, Egypt
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11
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Bacterially Delivered miRNA-Mediated Toll-like Receptor 8 Gene Silencing for Combined Therapy in a Murine Model of Atopic Dermatitis: Therapeutic Effect of miRTLR8 in AD. Microorganisms 2021; 9:microorganisms9081715. [PMID: 34442794 PMCID: PMC8401271 DOI: 10.3390/microorganisms9081715] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2021] [Revised: 07/17/2021] [Accepted: 07/20/2021] [Indexed: 11/22/2022] Open
Abstract
In atopic dermatitis (AD), skin inflammation is caused by complex interactions between genetic disposition and aberrant innate/adaptive immune responses. Toll-like receptors (TLRs) are key molecules in the innate/adaptive immune response as they recognize various molecular motifs associated with pathogens. Among them, TLR8 is implicated in eczematous skin reactions. We investigated the combined therapeutic effects of TLR8 gene silencing by the bacterial delivery of miRNA. We used Salmonella as a vector to deliver TLR8 miRNA. The recombinant strain of Salmonella enterica subsp. enterica serovar Typhimurium (ST) expressing TLR8 miRNA (ST-miRTLR8) was prepared for knockdown of TLR8. After oral administration of ST-miRTLR8 into mice, we observed the cytokine levels, skin pathology and scratching behaviors in an AD-like mouse model. TLR8 down-regulation decreased macrophage-derived chemokine concentrations in activated human mast cells. Serum IgE and interleukin-4 production were suppressed whereas IFN-γ was induced after oral administration of ST-miRTLR8. Scratching behaviors and skin inflammation were also improved. In addition, attenuated S. typhimurium safely accumulated in mouse macrophages and showed adjuvant effects. This study shows that the recombinant miRNA that expresses the TLR8 miRNA has therapeutic effects by suppressing Th2 inflammation. TLR gene modulation using miRNA via Salmonella vectors will thus have a double-protective effect in the treatment of AD.
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12
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Wang L, Zhang S, Cai H, Qi Q, Zhang C, Qi Z, Huang C. Inhibition of TLR9 signaling stimulates apoptosis and cell cycle arrest and alleviates angiogenic property in human cervical cancer cells. Endocr Metab Immune Disord Drug Targets 2021; 22:510-517. [PMID: 34161216 DOI: 10.2174/1871530321666210622112753] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/25/2020] [Revised: 04/15/2021] [Accepted: 04/20/2021] [Indexed: 12/24/2022]
Abstract
AIMS The aim of the study was to assess the effect of blocking TLR9 signaling on the proliferation of cervical cancer cells and its angiogenic property. BACKGROUND Toll-like receptors (TLRs) have been implicated for their crucial role in not only cervical cancer but also in other malignancies. TLR9 is expressed on an array of cells such as macrophages, dendritic cells, melanocytes, and keratinocytes. It is reported to modulate oncogenesis along with tumorigenesis by augmenting NF-κB mediated inflammation within the tumor environment. TLR9 has also been reported to positively regulate oncogenesis within the cervix and as a marker to evaluate malignant remodeling of cervical squamous cells. Therefore, this study was designed to explore the functional relevance of blocking the TLR9 signaling pathway in cervical cancer cells. OBJECTIVE The objective of the current study was to investigate the effect of human TLR9 antagonist, ODN INH-18, on apoptosis and cell cycle regulation and angiogenic property of human cervical cancer Caski cells. METHOD MTT assay was performed to measure cell viability, and flow cytometry analysis was performed to assess cell cycle arrest. Quantitative real-time PCR (qRT-PCR) analysis was performed to measure fold change in the gene expression of various markers of apoptosis, cell cycle regulation, and angiogenesis. RESULT The qRT-PCR results showed a higher expression level of TLR9 mRNA in Caski cervical cancer cells as compared to normal cervical keratinocytes. The apoptotic, angiogenic, and cell cycle regulatory factors were also deregulated in Caski cells in comparison to normal keratinocytes. The MTT assay demonstrated that treatment of TLR9 antagonist, ODN INH18, significantly reduced the proliferation of Caski cells in a dose-dependent manner. Treatment of ODN INH18 led to substantial cell cycle arrest in Caski cells at G0/G1 phase. Moreover, the qRT-PCR results demonstrated that ODN INH18 treatment led to suppressed mRNA expression of Bcl-2 and enhanced expression of Bax, signifying induction of apoptosis in Caski cells. Moreover, the expression of cyclin D1, Cdk4, and Cdc25A was found to be reduced, whereas expression of p27 was increased in ODN INH18-treated Caski cells, indicating G0/G1 phase arrest. Interestingly, expression of VEGF and VCAM-1 were found to be significantly inhibited in ODN INH18-treated Caski cells, substantiating alleviation of angiogenic property of cervical cancer cells. CONCLUSION The results of our study suggest that inhibiting TLR9 signaling might be an interesting therapeutic intervention for the treatment of cervical cancer.
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Affiliation(s)
- Liehong Wang
- Department of Gynecology and Obstetrics,Qinghai Red Cross Hospital,810000, China
| | - Shengkun Zhang
- Department of Gynecology and Obstetrics, Xuzhou Central Hospital; 221009, China
| | - Hua Cai
- Department of Gynecology, Maternal and Child Health Hospital of Liaocheng,252000, China
| | - Qingling Qi
- Department of Gynecology and Obstetrics,Qinghai Red Cross Hospital,810000, China
| | - Chunhua Zhang
- Department of Gynecology, Maternal and Child Health Hospital of Huai'an City, Jiangsu Province, Huai'an City, Jiangsu Province, 223002, China
| | - Ziyi Qi
- Huaiyin Middle School of Jiangsu Province, Huai'an City, Jiangsu Province, 223000, China
| | - CuiPing Huang
- Department of Obstetrics and Gynecology, The Second Hospital of Shandong University, 250033, China
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13
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Identification and prediction of common molecular culprits between psoriasis and melanoma via bioinformatical analysis. GENE REPORTS 2021. [DOI: 10.1016/j.genrep.2021.101143] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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14
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Li M, Yang Y, Lin C, Zhang Q, Gong L, Wang Y, Zhang X. Antibacterial Properties of Small-Size Peptide Derived from Penetratin against Oral Streptococci. MATERIALS 2021; 14:ma14112730. [PMID: 34064259 PMCID: PMC8196835 DOI: 10.3390/ma14112730] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/06/2021] [Revised: 05/03/2021] [Accepted: 05/16/2021] [Indexed: 12/25/2022]
Abstract
Periodontitis, an infectious disease originating from dental biofilms that causes the irreversible loss of alveolar bone, is accompanied by gradual biofilm formation and the continuous progression of inflammation. A small peptide derived from penetratin, Arg-Gln-Ile-Arg-Arg-Trp-Trp-Gln-Arg-NH2 (RR9), appears to have antibacterial properties against selected strains associated with periodontitis. The purpose of this research is to assess the antibacterial activity and mechanism of RR9 against the initial oral colonizers Streptococci oralis, Streptococci gordonii, and Streptococci sanguinis and to investigate the cytotoxicity of RR9 on human gingival fibroblasts in vitro. The effects of RR9 on the initial oral settlers of planktonic and biofilm states were evaluated by measuring the MIC, MBC, bactericidal kinetics, and antibiofilm activity. Visual evidence and antibacterial mechanisms were identified, and the anti-inflammatory activity and cytotoxicity were measured. The results demonstrated that RR9 can inhibit the growth of streptococci in the planktonic state and during biofilm formation in vitro while keeping a low toxicity against eukaryotic cells. The antibacterial mechanism was proven to be related to the lower expression of sspA in streptococci. RR9 may be used as a potential antimicrobial and anti-infective agent for periodontal disease.
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Affiliation(s)
- Meng Li
- School and Hospital of Stomatology, Tianjin Medical University, 12 Observatory Road, Tianjin 300070, China; (M.L.); (Y.Y.); (C.L.); (Q.Z.)
| | - Yanyan Yang
- School and Hospital of Stomatology, Tianjin Medical University, 12 Observatory Road, Tianjin 300070, China; (M.L.); (Y.Y.); (C.L.); (Q.Z.)
- Affiliated Stomatology Hospital of Guangzhou Medical University, Guangzhou 510150, China
| | - Chen Lin
- School and Hospital of Stomatology, Tianjin Medical University, 12 Observatory Road, Tianjin 300070, China; (M.L.); (Y.Y.); (C.L.); (Q.Z.)
- Fengtai Maternal & Child Health Hospital, Beijing 100069, China
| | - Qian Zhang
- School and Hospital of Stomatology, Tianjin Medical University, 12 Observatory Road, Tianjin 300070, China; (M.L.); (Y.Y.); (C.L.); (Q.Z.)
| | - Lei Gong
- Department of Esophageal Cancer, Tianjin’s Clinical Research Center for Cancer and Key Laboratory of Cancer Prevention and Therapy, National Clinical Research Center for Cancer, Tianjin Medical University Cancer Institute and Hospital, Tianjin 300070, China;
| | - Yonglan Wang
- School and Hospital of Stomatology, Tianjin Medical University, 12 Observatory Road, Tianjin 300070, China; (M.L.); (Y.Y.); (C.L.); (Q.Z.)
- Correspondence: (Y.W.); (X.Z.)
| | - Xi Zhang
- School and Hospital of Stomatology, Tianjin Medical University, 12 Observatory Road, Tianjin 300070, China; (M.L.); (Y.Y.); (C.L.); (Q.Z.)
- Correspondence: (Y.W.); (X.Z.)
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15
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Rodrigues-Braz D, Zhao M, Yesilirmak N, Aractingi S, Behar-Cohen F, Bourges JL. Cutaneous and ocular rosacea: Common and specific physiopathogenic mechanisms and study models. Mol Vis 2021; 27:323-353. [PMID: 34035646 PMCID: PMC8131178] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2020] [Accepted: 05/11/2021] [Indexed: 11/21/2022] Open
Abstract
Rosacea is a chronic inflammatory disease that affects the face skin. It is clinically classified into the following four subgroups depending on its location and severity: erythematotelangiectatic, papulopustular, phymatous, and ocular. Rosacea is a multifactorial disease triggered by favoring factors, the pathogenesis of which remains imperfectly understood. Recognized mechanisms include the innate immune system, with the implication of Toll-like receptors (TLRs) and cathelicidins; neurovascular deregulation involving vascular endothelial growth factor (VEGF), transient receptor potential (TRP) ion channels, and neuropeptides; and dysfunction of skin sebaceous glands and ocular meibomian glands. Microorganisms, genetic predisposition, corticosteroid treatment, and ultraviolet B (UVB) radiation are favoring factors. In this paper, we review the common and specific molecular mechanisms involved in the pathogenesis of cutaneous and ocular rosacea and discuss laboratory and clinical studies, as well as experimental models.
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Affiliation(s)
- Daniela Rodrigues-Braz
- Centre de Recherche des Cordeliers, Université de Paris, Sorbonne Université, Inserm, UMRS1138, Team 17, Physiopathology of ocular diseases: therapeutic innovations, Paris, France
| | - Min Zhao
- Centre de Recherche des Cordeliers, Université de Paris, Sorbonne Université, Inserm, UMRS1138, Team 17, Physiopathology of ocular diseases: therapeutic innovations, Paris, France
| | - Nilufer Yesilirmak
- Centre de Recherche des Cordeliers, Université de Paris, Sorbonne Université, Inserm, UMRS1138, Team 17, Physiopathology of ocular diseases: therapeutic innovations, Paris, France
- Department of Ophthalmology, Ankara Yildirim Beyazit University, Ankara, Turkey
- Ophtalmopole, Assistance Publique -Hôpitaux de Paris (AP-HP), Cochin Hospital, Paris, France
| | - Selim Aractingi
- Department of Dermatology, AP-HP, Cochin Hospital, Paris, France
| | - Francine Behar-Cohen
- Centre de Recherche des Cordeliers, Université de Paris, Sorbonne Université, Inserm, UMRS1138, Team 17, Physiopathology of ocular diseases: therapeutic innovations, Paris, France
- Ophtalmopole, Assistance Publique -Hôpitaux de Paris (AP-HP), Cochin Hospital, Paris, France
| | - Jean-Louis Bourges
- Centre de Recherche des Cordeliers, Université de Paris, Sorbonne Université, Inserm, UMRS1138, Team 17, Physiopathology of ocular diseases: therapeutic innovations, Paris, France
- Ophtalmopole, Assistance Publique -Hôpitaux de Paris (AP-HP), Cochin Hospital, Paris, France
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16
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Prignano F, Lombardo G, Indino S, Ricceri F, Cornaghi L, Donetti EB. Evaluation of expression of Toll-Like Receptors 7 and 9, proliferation, and cytoskeletal biomarkers in plaque and guttate psoriasis: A pilot morphological study. Eur J Histochem 2021; 65. [PMID: 33666385 PMCID: PMC7967266 DOI: 10.4081/ejh.2021.3218] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2021] [Accepted: 02/18/2021] [Indexed: 02/08/2023] Open
Abstract
This pilot study was aimed at comparing TLR7/TLR9 expression, cytoskeletal arrangement, and cell proliferation by indirect immunofluorescence in parallel lesional and non lesional skin samples of guttate psoriasis (PG) and psoriasis vulgaris (PV) in five male patients for each group (n=10). TLR7 expression was detected throughout all the epidermal compartment in PV samples, while in PG skin was restricted to the granular layer. TLR9 was present in the granular layer of non lesional skin and in the suprabasal layers of PV/PG lesional skin. Cell proliferation was localized in all the epidermal layers in lesional PG and PV, consistently with the immunopositivity for the “psoriatic keratin” K16. In the suprabasal layers of lesional PG and PV skin, a similar K17 expression was detected and K10 exhibited a patchy distribution. The present results suggest that TLR7 expression can be considered an intrinsic and differential histomorphological feature of PV.
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Affiliation(s)
- Francesca Prignano
- Department of Health Sciences, Section of Dermatology, University of Florence.
| | - Giulia Lombardo
- Department of Biomedical Sciences for Health, University of Milan.
| | - Serena Indino
- Department of Biomedical Sciences for Health, University of Milan.
| | - Federica Ricceri
- Department of Health Sciences, Section of Dermatology, University of Florence.
| | - Laura Cornaghi
- Department of Biomedical Sciences for Health, University of Milan.
| | - Elena B Donetti
- Department of Biomedical Sciences for Health, University of Milan.
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17
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Gandhi S, Ravindra K. Toll-Like Receptors in Dermatology, Venereology, and Leprosy. Indian J Dermatol 2021; 66:223. [PMID: 34188292 PMCID: PMC8208254 DOI: 10.4103/ijd.ijd_486_17] [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] [Indexed: 11/13/2022] Open
Abstract
Toll-like receptors (TLRs) represent a family of Type I transmembrane proteins characterized by an extracellular leucine-rich repeat domain and a cytoplasmic domain. TLRs represent a conserved group of receptors which help the immune system to function properly. Different TLRs are associated with an array of skin diseases. TLR agonists and antagonists have great potential for the treatment of allergic and inflammatory diseases.
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Affiliation(s)
- Sneha Gandhi
- Department of Dermatology, Venereology and Leprosy, GIMS, Gulbarga, Karnataka, India
| | - K Ravindra
- Department of Dermatology, Venereology and Leprosy, JJMMC, Davangere, Karnataka, India
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18
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Jiang Y, Tsoi LC, Billi AC, Ward NL, Harms PW, Zeng C, Maverakis E, Kahlenberg JM, Gudjonsson JE. Cytokinocytes: the diverse contribution of keratinocytes to immune responses in skin. JCI Insight 2020; 5:142067. [PMID: 33055429 PMCID: PMC7605526 DOI: 10.1172/jci.insight.142067] [Citation(s) in RCA: 108] [Impact Index Per Article: 27.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
The skin serves as the primary interface between our body and the external environment and acts as a barrier against entry of physical agents, chemicals, and microbes. Keratinocytes make up the main cellular constitute of the outermost layer of the skin, contributing to the formation of the epidermis, and they are crucial for maintaining the integrity of this barrier. Beyond serving as a physical barrier component, keratinocytes actively participate in maintaining tissue homeostasis, shaping, amplifying, and regulating immune responses in skin. Keratinocytes act as sentinels, continuously monitoring changes in the environment, and, through microbial sensing, stretch, or other physical stimuli, can initiate a broad range of inflammatory responses via secretion of various cytokines, chemokines, and growth factors. This diverse function of keratinocytes contributes to the highly variable clinical manifestation of skin immune responses. In this Review, we highlight the highly diverse functions of epidermal keratinocytes and their contribution to various immune-mediated skin diseases.
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Affiliation(s)
- Yanyun Jiang
- Department of Dermatology, University of Michigan, Ann Arbor, Michigan, USA.,Department of Dermatology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Lam C Tsoi
- Department of Dermatology, University of Michigan, Ann Arbor, Michigan, USA.,Department of Computational Medicine and Bioinformatics and Department of Biostatistics, University of Michigan Medical School, Ann Arbor, Michigan, USA
| | - Allison C Billi
- Department of Dermatology, University of Michigan, Ann Arbor, Michigan, USA
| | - Nicole L Ward
- Department of Nutrition and Department of Dermatology, Case Western Reserve University, Cleveland, Ohio, USA
| | - Paul W Harms
- Department of Pathology, University of Michigan, Ann Arbor, Michigan, USA
| | - Chang Zeng
- Department of Dermatology, University of Michigan, Ann Arbor, Michigan, USA
| | - Emanual Maverakis
- Department of Dermatology, University of California, Davis, Sacramento, California, USA
| | - J Michelle Kahlenberg
- Division of Rheumatology, Department of Internal Medicine, University of Michigan, Michigan, USA.,A. Alfred Taubman Medical Research Institute, Michigan, USA
| | - Johann E Gudjonsson
- Department of Dermatology, University of Michigan, Ann Arbor, Michigan, USA.,A. Alfred Taubman Medical Research Institute, Michigan, USA
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19
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Kim S, Lee SY, Bae S, Lee JK, Hwang K, Go H, Lee CW. Pellino1 promotes chronic inflammatory skin disease via keratinocyte hyperproliferation and induction of the T helper 17 response. Exp Mol Med 2020; 52:1537-1549. [PMID: 32873845 PMCID: PMC8080721 DOI: 10.1038/s12276-020-00489-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2019] [Revised: 07/02/2020] [Accepted: 07/13/2020] [Indexed: 11/24/2022] Open
Abstract
Psoriasis is one of the most common immune-mediated chronic inflammatory skin diseases. However, little is known about the molecular mechanism underlying the immunological circuits that maintain innate and adaptive immune responses in established psoriasis. In this study, we found that the Pellino1 (Peli1) ubiquitin E3 ligase is activated by innate pattern-recognition receptors (PRRs), such as Toll-like receptors (TLRs), and is highly upregulated in human psoriatic skin lesions and murine psoriasis-like models. Increased Peli1 expression is strongly correlated with the immunopathogenesis of psoriasis by activating hyperproliferation of keratinocytes in the S and G2/M phases of the cell cycle and promoting chronic skin inflammation. Furthermore, Peli1-induced psoriasis-like lesions showed significant changes in the expression levels of several T helper 17 (Th17)-related cytokines, such as IL-17a, IL-21, IL-22, IL-23, and IL-24, indicating that overexpression of Peli1 resulted in the sequential engagement of the Th17 cell response. However, the overexpression of Peli1 in T cells was insufficient to trigger psoriasis, while T cells were indispensable for disease manifestation. In summary, our findings demonstrate that Peli1 is a critical cell cycle activator of innate immunity, which subsequently links Th17 cell immune responses to the psoriatic microenvironment. An immune-regulating protein that mediates chronic inflammation in the skin offers a new therapeutic target for the autoimmune disorder psoriasis. A research team from South Korea led by Chang-Woo Lee from Sungkyunkwan University School of Medicine in Suwon and Heounjeong Go from the University of Ulsan College of Medicine in Seoul have discovered that Pellino1, a protein known to modulate immune responses to pathogens, is also found in abundance in the skin lesions of people with psoriasis. Using mouse models, the researchers showed how Pellino1 induces the proliferation of certain skin cells and triggers an inflammatory state through the activation of small proteins and immune cells normally involved in defense against infection. Targeting strategy that inactivate Pellino1 could help blunt the inflammatory signaling in the skin that drives the development of psoriatic lesions.
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Affiliation(s)
- Suhyeon Kim
- Department of Molecular Cell Biology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Suwon, 16419, Republic of Korea
| | - Si-Yeon Lee
- Department of Molecular Cell Biology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Suwon, 16419, Republic of Korea
| | - Seoyoon Bae
- Department of Molecular Cell Biology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Suwon, 16419, Republic of Korea
| | - Jin-Kwan Lee
- Department of Health Sciences and Technology, SAIHST, Sungkyunkwan University, Seoul, 06351, Republic of Korea
| | - Kyungrim Hwang
- Department of Molecular Cell Biology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Suwon, 16419, Republic of Korea
| | - Heounjeong Go
- Department of Pathology, University of Ulsan College of Medicine, Asan Medical Center, Seoul, 05505, Republic of Korea.
| | - Chang-Woo Lee
- Department of Molecular Cell Biology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Suwon, 16419, Republic of Korea. .,Department of Health Sciences and Technology, SAIHST, Sungkyunkwan University, Seoul, 06351, Republic of Korea.
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20
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Megahed FAK, Zhou X, Sun P. The Interactions between HBV and the Innate Immunity of Hepatocytes. Viruses 2020; 12:v12030285. [PMID: 32151000 PMCID: PMC7150781 DOI: 10.3390/v12030285] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2020] [Revised: 03/02/2020] [Accepted: 03/03/2020] [Indexed: 02/05/2023] Open
Abstract
Hepatitis B virus (HBV) infection affects ~350 million people and poses a major public health problem worldwide. HBV is a major cause of cirrhosis and hepatocellular carcinoma. Fewer than 5% of HBV-infected adults (but up to 90% of HBV-infected infants and children) develop chronic HBV infection as indicated by continued, detectable expression of hepatitis B surface antigen (HBsAg) for at least 6 months after the initial infection. Increasing evidence indicates that HBV interacts with innate immunity signaling pathways of hepatocytes to suppress innate immunity. However, it is still not clear how HBV avoids monitoring by the innate immunity of hepatocytes and whether the innate immunity of hepatocytes can be effective against HBV if re-triggered. Moreover, a deep understanding of virus-host interactions is important in developing new therapeutic strategies for the treatment of HBV infection. In this review, we summarize the current knowledge regarding how HBV represses innate immune recognition, as well as recent progress with respect to in vitro models for studying HBV infection and innate immunity.
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Affiliation(s)
- Fayed Attia Koutb Megahed
- Stem Cell Research Center, Research Center for Reproductive Medicine, Guangdong Provincial Key Laboratory of Infectious Diseases and Molecular Immunopathology, Shantou University Medical College, Shantou 515041, China;
- Department of Nucleic Acid Researches, Genetic Engineering and Biotechnology Research Institute, General Autority-City of Scientific Researches and Technological Applications, Alexandria 21934, Egypt
| | - Xiaoling Zhou
- Stem Cell Research Center, Research Center for Reproductive Medicine, Guangdong Provincial Key Laboratory of Infectious Diseases and Molecular Immunopathology, Shantou University Medical College, Shantou 515041, China;
- Correspondence: (X.Z.); (P.S.)
| | - Pingnan Sun
- Stem Cell Research Center, Research Center for Reproductive Medicine, Guangdong Provincial Key Laboratory of Infectious Diseases and Molecular Immunopathology, Shantou University Medical College, Shantou 515041, China;
- Correspondence: (X.Z.); (P.S.)
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21
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Preventative effects of the partial RANKL peptide MHP1-AcN in a mouse model of imiquimod-induced psoriasis. Sci Rep 2019; 9:15434. [PMID: 31659208 PMCID: PMC6817907 DOI: 10.1038/s41598-019-51681-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2019] [Accepted: 09/30/2019] [Indexed: 11/21/2022] Open
Abstract
We recently developed a partial peptide of receptor activator of nuclear factor-кB ligand (RANKL) known as microglial healing peptide 1 (MHP1-AcN), that inhibits Toll-like receptor (TLR)-related inflammation through RANKL/RANK signaling in microglia and macrophages without promoting osteoclast activation. The abnormal activation of TLRs contributes to the initiation and maintenance of psoriasis, which is a chronic inflammatory skin disease that involves the aberrant expression of proinflammatory cytokines and the subsequent dermal γδ T cell and T helper 17 (Th17) cell responses. The inhibition of TLR-mediated inflammation provides an important strategy to treat psoriasis. Here, we examined the preventative effects of MHP1-AcN in a mouse model of imiquimod (a TLR 7/8 agonist)-induced psoriasis. Topical imiquimod application induced psoriasis-like skin lesions on the ear and dorsal skin. Systemic administration of MHP1-AcN by daily subcutaneous injection significantly prevented the development of skin lesions, including erythema, scaling and thickening. Mice treated with MHP1-AcN showed reduced levels of skin Il6 mRNA at 32 h and reduced levels of Il23 and Il17a mRNA at d9. Serum levels of IL-6 and IL-23 were reduced at 32 h, and IL-17A was reduced at d9. These results indicated that MHP1-AcN could decrease imiquimod-induced IL-6, IL-23 and IL-17A production. MHP1-AcN is potentially an alternative treatment for psoriasis.
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Toll-Like Receptors-2 and -4 in Graves' Disease-Key Players or Bystanders? Int J Mol Sci 2019; 20:ijms20194732. [PMID: 31554206 PMCID: PMC6801632 DOI: 10.3390/ijms20194732] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2019] [Revised: 09/20/2019] [Accepted: 09/20/2019] [Indexed: 12/20/2022] Open
Abstract
Graves’ disease (GD) is an autoimmune disease that affects the thyroid. The development of autoimmunity is associated with innate immune responses where the prominent role plays Toll-like receptors (TLRs). The aim of our study was to assess the relationship between the expression levels of TLR-2 and TLR-4 on CD4+ and CD8+ T as well as CD19+ B lymphocytes in patients with GD and selected clinical parameters. The study group consisted of 32 women with GD, the control group consisted of 20 healthy women. Immunophenotyping was performed using the flow cytometry and cytokines concentrations were assessed using ELISA assay. The mean percentage of CD4+/TLR-2+ and CD8+/TLR-2+ T cells in patients with GD was higher than in the control group (p < 0.0001). After obtaining euthyroidism, the mean percentage of CD4+/TLR-2+ T cells in patients with GD decreased (p < 0.0001). The expression level of TLR-2 on CD4+ T lymphocytes correlated with serum FT3 concentration in patients with GD (r = 0.47, p = 0.007). The mean percentage of CD8+/TLR-2+ T cells in patients with GD before treatment compared to patients with GD after obtaining euthyroidism was higher (p = 0.0163). Similar findings were found for TLR-4. Thus the TLR-2 and TLR-4 can be a prognostic marker for Graves’ disease.
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23
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Equol’s efficacy is greater than astaxanthin for antioxidants, extracellular matrix integrity & breakdown, growth factors and inflammatory biomarkers via human skin gene expression analysis. J Funct Foods 2019. [DOI: 10.1016/j.jff.2019.03.025] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
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24
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Rajendiran KS, Rajappa M, Chandrashekar L, Thappa DM. Association of Nod‐like receptor protein‐1 (rs2670660) and Toll‐like receptor‐4 (rs4986790) with non‐segmental vitiligo: A case–control study in South Indian population. Int J Immunogenet 2019; 46:321-330. [DOI: 10.1111/iji.12429] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2018] [Revised: 04/10/2019] [Accepted: 04/10/2019] [Indexed: 12/29/2022]
Affiliation(s)
- Kalai Selvi Rajendiran
- Department of Biochemistry Jawaharlal Institute of Postgraduate Medical Education and Research Puducherry India
| | - Medha Rajappa
- Department of Biochemistry Jawaharlal Institute of Postgraduate Medical Education and Research Puducherry India
| | - Laxmisha Chandrashekar
- Department of Dermatology Jawaharlal Institute of Postgraduate Medical Education and Research Puducherry India
| | - Devinder Mohan Thappa
- Department of Dermatology Jawaharlal Institute of Postgraduate Medical Education and Research Puducherry India
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25
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Kim H, Park SY, Lee G. Potential Therapeutic Applications of Bee Venom on Skin Disease and Its Mechanisms: A Literature Review. Toxins (Basel) 2019; 11:toxins11070374. [PMID: 31252651 PMCID: PMC6669657 DOI: 10.3390/toxins11070374] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2019] [Revised: 06/23/2019] [Accepted: 06/25/2019] [Indexed: 01/03/2023] Open
Abstract
Skin is larger than any other organ in humans. Like other organs, various bacterial, viral, and inflammatory diseases, as well as cancer, affect the skin. Skin diseases like acne, atopic dermatitis, and psoriasis often reduce the quality of life seriously. Therefore, effective treatment of skin disorders is important despite them not being life-threatening. Conventional medicines for skin diseases include corticosteroids and antimicrobial drugs, which are effective in treating many inflammatory and infectious skin diseases; however, there are growing concerns about the side effects of these therapies, especially during long-term use in relapsing or intractable diseases. Hence, many researchers are trying to develop alternative treatments, especially from natural sources, to resolve these limitations. Bee venom (BV) is an attractive candidate because many experimental and clinical reports show that BV exhibits anti-inflammatory, anti-apoptotic, anti-fibrotic, antibacterial, antiviral, antifungal, and anticancer effects. Here, we review the therapeutic applications of BV in skin diseases, including acne, alopecia, atopic dermatitis, melanoma, morphea, photoaging, psoriasis, wounds, wrinkles, and vitiligo. Moreover, we explore the therapeutic mechanisms of BV in the treatment of skin diseases and killing effects of BV on skin disease-causing pathogens, including bacteria, fungi and viruses.
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Affiliation(s)
- Haejoong Kim
- College of Korean Medicine, Dongshin University, Naju-si, Jeollanam-do 58245, Korea
| | - Soo-Yeon Park
- Department of Ophthalmology, Otolaryngology & Dermatology, College of Korean Medicine, Dongshin University, Naju-si, Jeollanam-do 58245, Korea.
| | - Gihyun Lee
- College of Korean Medicine, Dongshin University, Naju-si, Jeollanam-do 58245, Korea.
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Tam I, Dzierżęga-Lęcznar A, Stępień K. Differential expression of inflammatory cytokines and chemokines in lipopolysaccharide-stimulated melanocytes from lightly and darkly pigmented skin. Exp Dermatol 2019; 28:551-560. [PMID: 30801846 DOI: 10.1111/exd.13908] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2018] [Accepted: 02/11/2019] [Indexed: 01/02/2023]
Abstract
Increasing evidence suggests that human epidermal melanocytes play an important role in the skin immune system; however, a role of their pigmentation in immune and inflammatory responses is poorly examined. In the study, the expression of Toll-like receptor 4 (TLR4) and inflammatory cytokines and chemokines by cultured normal melanocytes derived from lightly and darkly pigmented skin was investigated after cell stimulation with lipopolysaccharide (LPS). The basal TLR4 mRNA level in heavily pigmented cells was higher as compared to their lightly pigmented counterparts. Melanocyte exposure to LPS upregulated the expression of TLR4 mRNA and enhanced the DNA-binding activity of NF-κB p50 and p65. We found substantial differences in the LPS-stimulated expression of numerous genes encoding inflammatory cytokines and chemokines between the cells with various melanin contents. In lightly pigmented melanocytes, the most significantly upregulated genes were nicotinamide phosphoribosyltransferase (NAMPT/visfatin), the chemokines CCL2 and CCL20, and IL6, while the genes for CXCL12, IL-16 and the chemokine receptor CCR4 were the most significantly upregulated in heavily pigmented cells. Moreover, the lightly pigmented melanocytes secreted much more NAMPT, CCL2 and IL-6. The results of our study suggest modulatory effect of melanogenesis on the immune properties of normal epidermal melanocytes.
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Affiliation(s)
- Irena Tam
- Department of Instrumental Analysis, School of Pharmacy with the Division of Laboratory Medicine, Medical University of Silesia in Katowice, Sosnowiec, Poland
| | - Anna Dzierżęga-Lęcznar
- Department of Instrumental Analysis, School of Pharmacy with the Division of Laboratory Medicine, Medical University of Silesia in Katowice, Sosnowiec, Poland
| | - Krystyna Stępień
- Department of Instrumental Analysis, School of Pharmacy with the Division of Laboratory Medicine, Medical University of Silesia in Katowice, Sosnowiec, Poland
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Sumpter TL, Balmert SC, Kaplan DH. Cutaneous immune responses mediated by dendritic cells and mast cells. JCI Insight 2019; 4:123947. [PMID: 30626752 DOI: 10.1172/jci.insight.123947] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023] Open
Abstract
In the skin, complex cellular networks maintain barrier function and immune homeostasis. Tightly regulated multicellular cascades are required to initiate innate and adaptive immune responses. Innate immune cells, particularly DCs and mast cells, are central to these networks. Early studies evaluated the function of these cells in isolation, but recent studies clearly demonstrate that cutaneous DCs (dermal DCs and Langerhans cells) physically interact with neighboring cells and are receptive to activation signals from surrounding cells, such as mast cells. These interactions amplify immune activation. In this review, we discuss the known functions of cutaneous DC populations and mast cells and recent studies highlighting their roles within cellular networks that determine cutaneous immune responses.
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Affiliation(s)
| | | | - Daniel H Kaplan
- Department of Dermatology and.,Department of Immunology, University of Pittsburgh School of Medicine,Pittsburgh, Pennsylvania, USA
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Xu N, Deng W, He G, Gan X, Gao S, Chen Y, Gao Y, Xu K, Qi J, Lin H, Shen L, Li X, Hu Z. Alpha- and gamma-mangostins exhibit anti-acne activities via multiple mechanisms. Immunopharmacol Immunotoxicol 2018; 40:415-422. [DOI: 10.1080/08923973.2018.1519831] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Nuo Xu
- Institute of Life Science, Wenzhou University, Wenzhou, China
| | | | - Gaiying He
- LB Cosmeceutical Technology Co. Ltd, Shanghai, China
| | | | - Shuang Gao
- Institute of Life Science, Wenzhou University, Wenzhou, China
| | - Yu Chen
- Institute of Life Science, Wenzhou University, Wenzhou, China
| | - Yitian Gao
- Institute of Life Science, Wenzhou University, Wenzhou, China
| | - Ke Xu
- Institute of Life Science, Wenzhou University, Wenzhou, China
| | - Junmei Qi
- Institute of Life Science, Wenzhou University, Wenzhou, China
| | - Haojie Lin
- Institute of Life Science, Wenzhou University, Wenzhou, China
| | - Li Shen
- LB Cosmeceutical Technology Co. Ltd, Shanghai, China
| | - Xiaokun Li
- School of Pharmaceutical Science, Wenzhou Medical University, Wenzhou, China
| | - Zhenlin Hu
- Institute of Life Science, Wenzhou University, Wenzhou, China
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Risk of Psoriasis Following Terbinafine or Itraconazole Treatment for Onychomycosis: A Population-Based Case-Control Comparative Study. Drug Saf 2018; 41:285-295. [PMID: 29110252 DOI: 10.1007/s40264-017-0614-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
INTRODUCTION Several case studies have reported an association between antifungal drug use and psoriasis risk. OBJECTIVE The objective of this study was to investigate the association between terbinafine/itraconazole exposure and psoriasis incidence. METHODS Among patients with onychomycosis in the Taiwan National Health Insurance Research Database, 3831 incident psoriasis cases were identified during 2004-2010 and compared with 3831 age- and sex-matched controls with the same look-back period. Multivariate conditional logistic regression was used for the analysis. RESULTS The psoriasis cases were significantly more likely than matched controls to have used terbinafine or itraconazole (59.85 vs. 42.70%, respectively; p < 0.0001). After adjusting for potential confounders and cumulative duration of antifungal drug prescription, terbinafine/itraconazole use was associated with an increased psoriasis risk (adjusted odds ratio 1.33, 95% confidence interval 1.15-1.54). The association was stronger for more recent drug exposure (adjusted odds ratio 2.96, 95% confidence interval 2.25-3.90 for ≤ 90 days before the sampling date; adjusted odds ratio 1.04, 95% confidence interval 0.89-1.22 for > 360 days). In a comparison of patients receiving terbinafine or itraconazole only, psoriasis risk was higher for itraconazole (adjusted odds ratio 1.21, 95% confidence interval 1.05-1.40). CONCLUSION This large population-based case-control analysis showed that exposure to terbinafine or itraconazole is associated with an increased risk of incident psoriasis. The finding of an increased psoriasis risk for antifungal drug users, particularly for itraconazole, deserves attention in clinical practice although further prospective studies are necessary to confirm our findings and clarify the biological mechanisms that underlie these associations.
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TLR4-mediated activation of the ERK pathway following UVA irradiation contributes to increased cytokine and MMP expression in senescent human dermal fibroblasts. PLoS One 2018; 13:e0202323. [PMID: 30118525 PMCID: PMC6097681 DOI: 10.1371/journal.pone.0202323] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2018] [Accepted: 08/01/2018] [Indexed: 02/02/2023] Open
Abstract
Exposure to ultraviolet (UV) radiation is a major contributing factor to premature aging (photoaging) and skin cancer. In vitro models of cellular senescence have proven to be very useful for the study of slow and progressive accumulation of damage resulting in the growth arrest of aging skin cells. In this study, we compared UVA-induced cellular responses in non-senescent (NS) vs. senescent (S) human dermal fibroblasts (HDFs). HDFs were irradiated with a single dose of UVA (7.5 J/cm2) and QuantSeq 3' mRNA sequencing was performed to assess differential gene expression. Both NS and S HDFs expressed similar numbers of differentially expressed genes, although distinct sets of genes were differentially expressed between the two groups. Higher expression of matrix metalloproteinases (MMPs) and Toll-like receptor (TLR) pathway genes, such as TLR4, MyD88, and CXCL-8, was detected in S HDFs as compared with NS HDFs, and UVA exposure led to a downregulation of collagen genes, such as COL8A2 and COL5A3. Consistent with gene expression profiling, enhanced IL-6 and IL-8 secretion was observed in S HDFs compared with NS HDFs, in response to UVA. Furthermore, we show that TLR4-mediated ERK pathway is responsible for the UVA-mediated mitochondrial dysfunction as well as increased secretion of MMP-1 and IL-8 in S HDFs. Taken together, our results demonstrate the UVA-induced common and distinct molecular patterns of cellular responses between NS and S HDFs and suggest TLR4/ERK pathways as candidate targets to reduce senescent phenotypes.
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Nüesch U, Mauracher AA, Opitz L, Volkmer B, Michalak-Mićka K, Kamarashev J, Hartwig T, Reichmann E, Becher B, Vavassori S, Pachlopnik Schmid J. Epithelial proliferation in inflammatory skin disease is regulated by tetratricopeptide repeat domain 7 (Ttc7) in fibroblasts and lymphocytes. J Allergy Clin Immunol 2018; 143:292-304.e8. [PMID: 29775636 DOI: 10.1016/j.jaci.2018.02.057] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2017] [Revised: 02/06/2018] [Accepted: 02/26/2018] [Indexed: 10/14/2022]
Abstract
BACKGROUND Mutations in tetratricopeptide repeat domain 7A (TTC7A) and its mouse orthologue, Ttc7, result in a multisystemic disease, mostly affecting the epithelial barriers and immune system. Despite successful hematopoietic stem cell transplantation, ongoing progression of gastrointestinal manifestations can be life-threatening in TTC7A-deficient patients. OBJECTIVE We sought to identify whether TTC7A mutations dysregulate epithelial cells only or whether a cell-intrinsic defect in lymphocytes or other cells contributes to disease manifestations. METHODS Ttc7-mutated (Ttc7fsn/fsn) mice were crossed to generate double-mutant (Rag2-/-Ttc7fsn/fsn) and triple-mutant (Rag2-/-IL2rg-/-Ttc7fsn/fsn) mice. These models, together with bone marrow chimeras, were used to explore the role of adaptive and innate lymphocytes in the flaky skin phenotype. The effect of the Ttc7fsn/fsn mutation on stromal cells was tested in a xenograft model in conjunction with transcriptomic analysis of Ttc7fsn/fsn fibroblasts. RESULTS We observed that the severity of epithelial hyperproliferation was accentuated by lymphocytes, whereas the phenotype was not induced by transfer of Ttc7-mutated hematopoietic cells. Furthermore, mice completely lacking the lymphocytic compartment were not protected from epithelial hyperproliferation. Ttc7-mutated mouse fibroblasts expressed increased transcript levels of insulin-like growth factor 1 (Igf1) and the antimicrobial protein regenerating islet-derived protein 3γ (Reg3γ). In a xenograft model Ttc7-mutated fibroblasts markedly increased epithelial proliferation of keratinocytes. Thus Ttc7-mutated fibroblasts were identified as potent instigators of epithelial hyperproliferation. CONCLUSION Our results reveal a previously unsuspected fundamental cell-extrinsic role of Ttc7. We have identified potential candidates for molecularly targeted treatment strategies that will need to be evaluated in future preclinical studies.
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Affiliation(s)
- Ursina Nüesch
- Division of Immunology, University Children's Hospital Zurich, Zurich, Switzerland
| | - Andrea A Mauracher
- Division of Immunology, University Children's Hospital Zurich, Zurich, Switzerland
| | - Lennart Opitz
- Division of Immunology, University Children's Hospital Zurich, Zurich, Switzerland; Functional Genomics Center Zürich, University of Zurich, ETH Zurich, Zurich, Switzerland
| | - Benjamin Volkmer
- Division of Immunology, University Children's Hospital Zurich, Zurich, Switzerland
| | | | - Jivko Kamarashev
- Division of Dermatopathology, University Hospital Zurich, Zurich, Switzerland
| | - Tom Hartwig
- Institute of Experimental Immunology-Inflammation Research, Zurich, Switzerland
| | - Ernst Reichmann
- Tissue Biology Research Unit, University Children's Hospital Zurich, Zurich, Switzerland
| | - Burkhard Becher
- Institute of Experimental Immunology-Inflammation Research, Zurich, Switzerland
| | - Stefano Vavassori
- Division of Immunology, University Children's Hospital Zurich, Zurich, Switzerland
| | - Jana Pachlopnik Schmid
- Division of Immunology, University Children's Hospital Zurich, Zurich, Switzerland; Pediatric Immunology, University of Zurich, Zurich, Switzerland.
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Lacey N, Russell-Hallinan A, Zouboulis CC, Powell FC. Demodex mites modulate sebocyte immune reaction: possible role in the pathogenesis of rosacea. Br J Dermatol 2018. [PMID: 29532463 DOI: 10.1111/bjd.16540] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
BACKGROUND Rosacea is a common facial skin disorder mainly affecting middle-aged adults. Its aetiology is unknown and pathogenesis uncertain. Activation of the host innate immune response has been identified as an important factor. The Demodex mite population in the skin of rosacea patients is significantly higher than in patients with normal skin, suggesting that they may be of aetiological importance in this disorder. OBJECTIVES To determine the potential of Demodex mites to interact with the host immune system. METHODS Live Demodex mites were extracted from normal facial skin of control subjects and used in cell stimulation experiments with the immortalized SZ95 sebocyte line. Time- and mite-dose-dependent experiments were performed. Direct effects of Demodex and effects of the medium in which Demodex had been cultured were evaluated on the Toll-like receptor (TLR) signalling pathway on both a gene and protein expression level. RESULTS Mites modulated TLR signalling events on both mRNA and protein levels in SZ95 sebocytes. An initial trend towards downmodulation of genes in this pathway was observed. A subsequent switch to positive gene upregulation was recorded after 48 h of coculture. Demodex secreted bioactive molecules that affected TLR2 receptor expression by sebocytes. High numbers of Demodex induced proinflammatory cytokine secretion, whereas lower numbers did not. CONCLUSIONS Demodex mites have the capacity to modulate the TLR signalling pathway of an immortalized human sebocyte line. Mites have the capacity to secrete bioactive molecules that affect the immune reactivity of sebocytes. Increasing mite numbers influenced interleukin-8 secretion by these cells.
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Affiliation(s)
- N Lacey
- The Charles Institute of Dermatology, University College Dublin, Belfield, Dublin 4, Ireland
| | - A Russell-Hallinan
- The Charles Institute of Dermatology, University College Dublin, Belfield, Dublin 4, Ireland
| | - C C Zouboulis
- Departments of Dermatology, Venereology, Allergology and Immunology, Dessau Medical Center, Brandenburg Medical School Theodor Fontane, Dessau, Germany
| | - F C Powell
- The Charles Institute of Dermatology, University College Dublin, Belfield, Dublin 4, Ireland
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Eosinophils Accelerate Pathogenesis of Psoriasis by Supporting an Inflammatory Milieu that Promotes Neutrophil Infiltration. J Invest Dermatol 2018; 138:2185-2194. [PMID: 29580867 DOI: 10.1016/j.jid.2018.03.1509] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2017] [Revised: 03/05/2018] [Accepted: 03/12/2018] [Indexed: 12/24/2022]
Abstract
Eosinophils are proinflammatory granulocytes that are involved in the pathogenesis of various inflammatory reactions. However, their roles in psoriasis remain largely unknown. In this study, by examining the inflammatory features of the eosinophilic cell line EoL-1 and an imiquimod-induced murine model of psoriasis, we show that eosinophils provide inflammatory signals that accelerate the pathogenesis of psoriasis. EoL-1 cells constitutively expressed TLR7, which mediates acute and rapidly developing psoriatic inflammation. The activation of TLR7 on EoL-1 cells using R837 resulted in the secretion of inflammatory mediators that support the migration, activation, and survival of neutrophils. The underlying pathologic role of eosinophils in psoriatic inflammation was further substantiated by markedly decreased psoriasiform inflammation in imiquimod-treated ΔdblGATA mice, which have a systemic eosinophil deficiency. While imiquimod-treated wild-type mice showed a significant increase in the eosinophils in their skin, neutrophils remarkably outnumbered the eosinophils in the skin, lymph nodes, and spleen in wild-type mice after imiquimod application. In addition, lesional skin samples from psoriasis patients also showed up-regulated eosinophil cytotoxic granules, accompanied by marked neutrophil infiltration. Based on these collective data, we propose that eosinophils accelerate psoriatic inflammation by supporting inflammatory microenvironments to favor the activation and infiltration of neutrophils.
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Subramanian I, Singh VK, Jere A. Elucidating mechanistic insights into drug action for atopic dermatitis: a systems biology approach. BMC DERMATOLOGY 2018; 18:3. [PMID: 29415693 PMCID: PMC5803917 DOI: 10.1186/s12895-018-0070-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/11/2017] [Accepted: 01/30/2018] [Indexed: 02/08/2023]
Abstract
BACKGROUND Topical Betamethasone (BM) and Pimecrolimus (PC) are widely used drugs in the treatment of atopic dermatitis (AD). Though the biomolecules and biological pathways affected by the drugs are known, the causal inter-relationships among these pathways in the context of skin is not available. We aim to derive this insight by using transcriptomic data of AD skin samples treated with BM and PC using systems biology approach. METHODS Transcriptomic datasets of 10 AD patients treated with Betamethasone and Pimecrolimus were obtained from GEO datasets. We used a novel computational platform, eSkIN ( www.persistent.com/eskin ), to perform pathway enrichment analysis for the given datasets. eSkIN consists of 35 skin specific pathways, thus allowing skin-centric analysis of transcriptomic data. Fisher's exact test was used to compute the significance of the pathway enrichment. The enriched pathways were further analyzed to gain mechanistic insights into the action of these drugs. RESULTS Our analysis highlighted the molecular details of the mechanism of action of the drugs and corroborated the known facts about these drugs i.e. BM is more effective in triggering anti-inflammatory response but also causes more adverse effect on skin barrier than PC. In particular, eSkIN helped enunciate the biological pathways activated by these drugs to trigger anti-inflammatory response and its effect on skin barrier. BM suppresses pathways like TNF and TLRs, thus inhibiting NF-κB while PC targets inflammatory genes like IL13 and IL6 via known calcineurin-NFAT pathway. Furthermore, we show that the reduced skin barrier function by BM is due to the suppression of activators like AP1 transcription factors, CEBPs. CONCLUSION We thus demonstrate the detailed mechanistic insight into drug action of AD using a novel computational approach.
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Affiliation(s)
| | - Vivek K Singh
- LABS, Persistent Systems Limited, 9A/12, Erandwane, Pune, Maharashtra, 411004, India.
| | - Abhay Jere
- LABS, Persistent Systems Limited, 9A/12, Erandwane, Pune, Maharashtra, 411004, India
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Rudraiah S, Shamilov R, Aneskievich BJ. TNIP1 reduction sensitizes keratinocytes to post-receptor signalling following exposure to TLR agonists. Cell Signal 2018; 45:81-92. [PMID: 29413846 DOI: 10.1016/j.cellsig.2018.02.004] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2017] [Revised: 01/29/2018] [Accepted: 02/04/2018] [Indexed: 12/15/2022]
Abstract
Cell level inflammatory signalling is a combination of initiation at cell membrane receptors and modulation by cytoplasmic regulatory proteins. For keratinocytes, the predominant cell type in the epidermis, this would include toll-like receptors (TLR) and cytoplasmic proteins that propagate or dampen post-receptor signalling. We previously reported that increased levels of tumor necrosis factor α induced protein 3-interacting protein 1 (TNIP1) in HaCaT keratinocytes leads to decreased expression of stress response and inflammation-associated genes. This finding suggested decreased TNIP1 levels, as seen in some cutaneous disease states, may produce the opposite effect, sensitizing cells to triggers of inflammatory signalling including those sensed by TLR. In this study of TNIP1-deficient HaCaT keratinocytes we examined intracellular signalling consequences especially those expected to produce gene expression changes downstream of TLR3 or TLR2/6 activation by Poly (I:C) or FSL-1, agonists modeling skin relevant pathogens. We found TNIP1-deficient keratinocytes are hyper-sensitive to TLR activation compared to control cells with a normal complement of TNIP1 and receiving the same agonist stimulation. TNIP1-deficient keratinocytes have increased levels of activated (phosphorylated) cytoplasmic mediators such as JNK and p38 and greater nuclear translocation of NF-κB and phospho-p38 when exposed to TLR ligands. This is consistent with significantly increased expression of several inflammatory cytokines and chemokines, such as IL-6 and IL-8. These results describe how decreased TNIP1 levels promote a hyper-sensitive state in HaCaT keratinocytes evidenced by increased activation of signalling molecules downstream of TLR agonists and increased expression of pro-inflammatory mediators. TNIP1 keratinocyte deficiency as reported for some skin diseases may predispose these cells to excessive inflammatory signalling upon exposure to viral or bacterial ligands for TLR.
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Affiliation(s)
- Swetha Rudraiah
- Department of Pharmaceutical Sciences, University of Connecticut, Storrs, CT 06269-3092, USA; Department of Pharmaceutical Sciences, University of Saint Joseph, Hartford, CT 06103, USA.
| | - Rambon Shamilov
- Graduate Program in Pharmacology & Toxicology, University of Connecticut, Storrs, CT 06269-3092, USA.
| | - Brian J Aneskievich
- Department of Pharmaceutical Sciences, University of Connecticut, Storrs, CT 06269-3092, USA; Stem Cell Institute, University of Connecticut, Storrs, CT 06269-3092, USA.
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Donetti E, Cornaghi L, Arnaboldi F, Ricceri F, Pescitelli L, Maiocchi M, Carriero F, Baruffaldi Preis F, Prignano F. Epidermal barrier reaction to an in vitro psoriatic microenvironment. Exp Cell Res 2017; 360:180-188. [PMID: 28890293 DOI: 10.1016/j.yexcr.2017.09.004] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2017] [Revised: 09/01/2017] [Accepted: 09/02/2017] [Indexed: 12/20/2022]
Abstract
Keratinocytes (KCs) and Langerhans cells (LCs) contribute to create the epidermal barrier. To form a functional epidermis, KCs express filaggrin and Toll-like Receptors (TLRs). LCs are the first line of epidermal defence and can be activated by interleukin (IL)-17 and Tumor Necrosis Factor (TNF)-alpha. In psoriasis, an alteration of TLR expression, a defective expression of filaggrin, and LC activation occur. In organotypic cultures of human skin we investigated the interplay between IL-17 and TNF-alpha on i) expression of filaggrin, TLR2, 7 and 9, and Nuclear Factor (NF)-kB localization by immunofluorescence and ii) LC ultrastructural features by transmission electron microscopy. Normal human skin was obtained after aesthetic surgery (n=7), overnight incubated in a Transwell system, and exposed to TNF-alpha and/or IL-17 for 24 (T24), 48 (T48), and 72 (T72) hours. Cytokines always influenced the expression of filaggrin. TNF-alpha alone activated LCs only starting from T48. TLR2 and TLR7 expressions were affected at T24 by IL-17 and the combination of cytokines, but not by TNF-alpha. TLR9-positive cells were detectable in the granular layer after cytokine exposure. A nuclear localization of NF-kB was always observed after cytokine incubation. In conclusion, each cytokine possess an intrinsic activity on the different components of the epidermal barrier.
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Affiliation(s)
- Elena Donetti
- Department of Biomedical Sciences for Health, Università degli Studi di Milano, Via Mangiagalli, 31, 20133 Milan, Italy.
| | - Laura Cornaghi
- Department of Biomedical Sciences for Health, Università degli Studi di Milano, Via Mangiagalli, 31, 20133 Milan, Italy
| | - Francesca Arnaboldi
- Department of Biomedical Sciences for Health, Università degli Studi di Milano, Via Mangiagalli, 31, 20133 Milan, Italy
| | - Federica Ricceri
- Department of Surgery and Translational Medicine, Piero Palagi Hospital, Università degli Studi di Firenze, Viale Michelangelo 41, 50125 Florence, Italy
| | - Leonardo Pescitelli
- Department of Surgery and Translational Medicine, Piero Palagi Hospital, Università degli Studi di Firenze, Viale Michelangelo 41, 50125 Florence, Italy
| | - Martina Maiocchi
- Department of Biomedical Sciences for Health, Università degli Studi di Milano, Via Mangiagalli, 31, 20133 Milan, Italy
| | - Francesco Carriero
- Department of Biomedical Sciences for Health, Università degli Studi di Milano, Via Mangiagalli, 31, 20133 Milan, Italy
| | | | - Francesca Prignano
- Department of Surgery and Translational Medicine, Piero Palagi Hospital, Università degli Studi di Firenze, Viale Michelangelo 41, 50125 Florence, Italy
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Wang H, Wang Z, Rani PL, Fu X, Yu W, Bao F, Yu G, Li J, Li L, Sun L, Yue Z, Zhao Q, Pan Q, Cao J, Wang C, Chi X, Wang Y, Yang Q, Mi Z, Liu H, Zhang F. Identification of PTPN22
,ST6GAL1
and JAZF1
as psoriasis risk genes demonstrates shared pathogenesis between psoriasis and diabetes. Exp Dermatol 2017; 26:1112-1117. [DOI: 10.1111/exd.13393] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/18/2017] [Indexed: 01/02/2023]
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Bauer AK, Upham BL, Rondini EA, Tennis MA, Velmuragan K, Wiese D. Toll-like receptor expression in human non-small cell lung carcinoma: potential prognostic indicators of disease. Oncotarget 2017; 8:91860-91875. [PMID: 29190881 PMCID: PMC5696147 DOI: 10.18632/oncotarget.19463] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2016] [Accepted: 06/02/2017] [Indexed: 12/13/2022] Open
Abstract
Introduction Lung cancer remains the highest cause of cancer mortality worldwide. Toll-like receptors (TLR) are innate immune receptors that have both pro- and anti-tumorigenic properties. Based on findings from epidemiological studies and in rodents, we hypothesized that elevated TLR expression would be a positive prognostic indicator of disease in non-small cell lung carcinoma patients. Results Higher mRNA expression of TLR1-3 and 5-8 were significantly associated with increased overall survival (OS) when analyzed individually or as a group in both non-small cell lung carcinoma (NSCLC) patients and in the adenocarcinoma (ADC) subtype. Significant co-expression of many TLR combinations in ADC patients were also observed via RNA sequencing. Immunostaining demonstrated TLR4 and 8 significantly correlated in tumor tissue, similar to RNA. Methods We used kmplot.com to perform a meta-analysis on mRNA expression of TLR1-10 to determine any significant associations with OS in NSCLC and the ADC subtype. cBioportal was also used simultaneously to assess co-expression in TLR1-10 in ADC patients via RNA sequencing and to identify any molecular alterations. Lastly, immunostaining for a subset of TLRs was conducted on ADC patients. Conclusions Expression of innate immune receptors TLR1-10 is associated with improved survival outcomes in NSCLC. Thus, further evaluation of their predictive capacity and therapeutic utility is warranted.
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Affiliation(s)
- Alison K Bauer
- Department of Environmental and Occupational Health, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA
| | - Brad L Upham
- Department of Pediatrics and Human Development, Michigan State University, East Lansing, MI 48824, USA
| | - Elizabeth A Rondini
- Department of Pathobiology and Diagnostic Investigation, Michigan State University, East Lansing, MI 48824, USA
| | - Meredith A Tennis
- Department of Pulmonary Sciences and Critical Care Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA
| | - Kalpana Velmuragan
- Department of Environmental and Occupational Health, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA
| | - David Wiese
- McLaren Regional Medical Center, Flint, MI, 48532, USA
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Rhododendrin inhibits toll-like receptor-7-mediated psoriasis-like skin inflammation in mice. Exp Mol Med 2017; 49:e349. [PMID: 28665921 PMCID: PMC5519019 DOI: 10.1038/emm.2017.81] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2016] [Revised: 01/24/2017] [Accepted: 01/31/2017] [Indexed: 02/08/2023] Open
Abstract
Many active compounds present in Rhododendron brachycarpum have been used in traditional Oriental medicine for the treatment of various skin diseases. However, the precise mechanism of action of the compounds isolated from R. brachycarpum and their relevance as therapeutics for the treatment of psoriasis remain elusive. In this study, we report that rhododendrin isolated from R. brachycarpum strongly inhibits imiquimod (IMQ)-induced psoriasis-like skin inflammation in mice. We showed that topical treatment with rhododendrin reduces IMQ-induced skin hyperplasia, inflammatory mononuclear cell infiltration and the expression of pro-inflammatory mediators in mouse skin. In addition, we found that rhododendrin inhibits the activation of the TLR-7/NF-κB and mitogen-activated protein kinase pathways in both IMQ-induced psoriasis-like skin inflammation in mice and in normal human epidermal keratinocytes treated with IMQ. These results suggest that rhododendrin has an anti-inflammatory effect and can be used as a therapeutic to fight against psoriasis and other inflammatory skin diseases.
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The significance of Toll-like receptor (TLR) 2 and 9 gene polymorphisms in psoriasis. Postepy Dermatol Alergol 2017; 34:85-86. [PMID: 28261037 PMCID: PMC5329111 DOI: 10.5114/ada.2017.65628] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2016] [Accepted: 04/20/2016] [Indexed: 01/12/2023] Open
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Mortaz E, Adcock IM, Abedini A, Kiani A, Kazempour-Dizaji M, Movassaghi M, Garssen J. The role of pattern recognition receptors in lung sarcoidosis. Eur J Pharmacol 2017; 808:44-48. [PMID: 28108375 DOI: 10.1016/j.ejphar.2017.01.020] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2015] [Revised: 01/15/2017] [Accepted: 01/16/2017] [Indexed: 12/21/2022]
Abstract
Sarcoidosis is a granulomatous disorder of unknown etiology. Infection, genetic factors, autoimmunity and an aberrant innate immune system have been explored as potential causes of sarcoidosis. The etiology of sarcoidosis remains unknown, and it is thought that it might be caused by an infectious agent in a genetically predisposed, susceptible host. Inflammation results from recognition of evolutionarily conserved structures of pathogens (Pathogen-associated molecular patterns, PAMPs) and/or from reaction to tissue damage associated patterns (DAMPs) through recognition by a limited number of germ line-encoded pattern recognition receptors (PRRs). Due to the similar clinical and histopathological picture of sarcoidosis and tuberculosis, Mycobacterium tuberculosis antigens such early secreted antigen (ESAT-6), heat shock proteins (Mtb-HSP), catalase-peroxidase (katG) enzyme and superoxide dismutase A peptide (sodA) have been often considered as factors in the etiopathogenesis of sarcoidosis. Potential non-TB-associated PAMPs include lipopolysaccharide (LPS) from the outer membrane of Gram-negative bacteria, peptidoglycan, lipoteichoic acid, bacterial DNA, viral DNA/RNA, chitin, flagellin, leucine-rich repeats (LRR), mannans in the yeast cell wall, and microbial HSPs. Furthermore, exogenous non-organic antigens such as metals, silica, pigments with/without aluminum in tattoos, pesticides, and pollen have been evoked as potential causes of sarcoidosis. Exposure of the airways to diverse infectious and non-infectious agents may be important in the pathogenesis of sarcoidosis. The current review provides and update on the role of PPRs and DAMPs in the pathogenesis of sarcoidsis.
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Affiliation(s)
- Esmaeil Mortaz
- Department of Immunology, Faculty of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran; Clinical Tuberculosis and Epidemiology Research Center, National Research Institute of Tuberculosis and Lung Diseases (NRITLD), Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Ian M Adcock
- Airways Disease Section, National Heart and Lung Institute, Imperial College London, London, UK
| | - Atefhe Abedini
- Chronic Respiratory Diseases Research Center, National Research Institute of Tuberculosis and Lung Diseases, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Arda Kiani
- Chronic Respiratory Diseases Research Center, National Research Institute of Tuberculosis and Lung Diseases, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
| | - Mehdi Kazempour-Dizaji
- Mycobacteriology Research Center, National Research Institute of Tuberculosis and Lung Diseases (NRITLD), Masih Daneshvari Hospital, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Masoud Movassaghi
- Department of Pathology and Laboratory Medicine, University of California, Los Angeles (UCLA), USA
| | - Johan Garssen
- Division of Pharmacology, Utrecht Institute for Pharmaceutical Sciences, Faculty of Sciences, Utrecht University, Utrecht, The Netherlands; Nutricia Research Centre for Specialized Nutrition, Utrecht, The Netherlands
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Haile LA, Puig M, Polumuri SK, Ascher J, Verthelyi D. In Vivo Effect of Innate Immune Response Modulating Impurities on the Skin Milieu Using a Macaque Model: Impact on Product Immunogenicity. J Pharm Sci 2016; 106:751-760. [PMID: 27923493 DOI: 10.1016/j.xphs.2016.11.001] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2016] [Revised: 10/13/2016] [Accepted: 11/01/2016] [Indexed: 01/04/2023]
Abstract
Unwanted immune responses to therapeutic proteins can severely impact their safety and efficacy. Studies show that the presence of trace amounts of host cells and process-related impurities that stimulate pattern recognition receptors (PRR) can cause local inflammation and enhance product immunogenicity. Here we used purified PRR agonists as model impurities to assess the minimal level of individual innate immune response modulating impurities (IIRMIs) that could activate a local immune response. We show that levels of endotoxin as low as 10 pg (0.01 EU), 1 ng for polyinosinic:polycytidylic acid (PolyI:C), 100 ng for synthetic diacylated liopprotein, thiazoloquinolone compound, or muramyl dipeptide, 1 μg for flagellin or β-glucan, or 5 μg for CpG-oligodeoxynucleotide increased expression of genes linked to innate immune activation and inflammatory processes in the skin of rhesus macaques. Furthermore, spiking studies using rasburicase as a model therapeutic showed that the levels of PRR agonists that induced detectable gene upregulation in the skin were associated with increased immunogenicity for rasburicase. This study underscores the need for testing multiple IIRMIs in biologics, strengthening the connection between the local mRNA induction in skin, innate immune activation, and antibody development in primates, and provides an indication of the levels of IIRMI in therapeutic products that could impact product immunogenicity.
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Affiliation(s)
- Lydia A Haile
- Laboratory of Immunology, Division of Biotechnology Review and Research III, Office of Biotechnology Products, Center for Drug Evaluation and Research, Food and Drug Administration (FDA), Silver Spring, Maryland 20993
| | - Montserrat Puig
- Laboratory of Immunology, Division of Biotechnology Review and Research III, Office of Biotechnology Products, Center for Drug Evaluation and Research, Food and Drug Administration (FDA), Silver Spring, Maryland 20993
| | - Swamy K Polumuri
- Laboratory of Immunology, Division of Biotechnology Review and Research III, Office of Biotechnology Products, Center for Drug Evaluation and Research, Food and Drug Administration (FDA), Silver Spring, Maryland 20993
| | - Jill Ascher
- Laboratory of Immunology, Division of Biotechnology Review and Research III, Office of Biotechnology Products, Center for Drug Evaluation and Research, Food and Drug Administration (FDA), Silver Spring, Maryland 20993
| | - Daniela Verthelyi
- Laboratory of Immunology, Division of Biotechnology Review and Research III, Office of Biotechnology Products, Center for Drug Evaluation and Research, Food and Drug Administration (FDA), Silver Spring, Maryland 20993.
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Bee Venom Inhibits Porphyromonas gingivalis Lipopolysaccharides-Induced Pro-Inflammatory Cytokines through Suppression of NF-κB and AP-1 Signaling Pathways. Molecules 2016; 21:molecules21111508. [PMID: 27834922 PMCID: PMC6273372 DOI: 10.3390/molecules21111508] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2016] [Revised: 10/28/2016] [Accepted: 11/04/2016] [Indexed: 01/09/2023] Open
Abstract
Periodontitis is a chronic inflammatory disease that leads to destruction of tooth supporting tissues. Porphyromonas gingivalis (P. gingivalis), especially its lipopolysaccharides (LPS), is one of major pathogens that cause periodontitis. Bee venom (BV) has been widely used as a traditional medicine for various diseases. Previous studies have demonstrated the anti-inflammatory, anti-bacterial effects of BV. However, a direct role and cellular mechanism of BV on periodontitis-like human keratinocytes have not been explored. Therefore, we investigated the anti-inflammatory mechanism of BV against P. gingivalis LPS (PgLPS)-induced HaCaT human keratinocyte cell line. The anti-inflammatory effect of BV was demonstrated by various molecular biological methods. The results showed that PgLPS increased the expression of Toll-like receptor (TLR)-4 and pro-inflammatory cytokines, such as tumor necrosis factor (TNF)-α, interleukin (IL)-1β, IL-6, IL-8, and interferon (IFN)-γ. In addition, PgLPS induced activation of the signaling pathways of inflammatory cytokines-related transcription factors, nuclear factor kappa-light-chain-enhancer of activated B cells (NF-κB) and activator protein 1 (AP-1). BV effectively inhibited those pro-inflammatory cytokines through suppression of NF-κB and AP-1 signaling pathways. These results suggest that administration of BV attenuates PgLPS-induced inflammatory responses. Furthermore, BV may be a useful treatment to anti-inflammatory therapy for periodontitis.
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Zatsepin M, Mattes A, Rupp S, Finkelmeier D, Basu A, Burger-Kentischer A, Goldblum A. Computational Discovery and Experimental Confirmation of TLR9 Receptor Antagonist Leads. J Chem Inf Model 2016; 56:1835-46. [PMID: 27537371 DOI: 10.1021/acs.jcim.6b00070] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Toll-like receptors (TLR) are receptors of innate immunity that recognize pathogen associated molecular patterns. They play a critical role in many pathological states, in acute and chronic inflammatory processes. TLR9 is a promising target for drug discovery, since it has been implicated in several pathologies, including defense against viral infections and psoriasis. Immune-modulators are promising molecules for therapeutic intervention in these indications. TLR9 is located in the endosome and activated by dsDNA with CpG motives encountered in microbial DNA. Here we report on a combined approach to discover new TLR9 antagonists by computational chemistry and cell based assays. We used our in-house iterative stochastic elimination (ISE) algorithm to create models that distinguish between TLR9 antagonists ("actives") and other molecules ("inactives"), based on molecular physicochemical properties. Subsequent screening and scoring of a data set of 1.8 million commercially available molecules led to the purchasing of top scored molecules, which were tested in a new cell based system based on human pattern recognition receptors (PRRs) stably expressed in NIH3T3 fibroblasts. As described previously, this cell line shows a very low endogenous PRR-activity and contains a reporter gene which is selectively activated by the integrated human PRR enabling rapid screening of potential ligands. IC50 values of each of these top scored molecules were determined. Out of 60 molecules tested, 56 showed antagonistic activity. We discovered 21 new highly potential antagonists with IC50 values lower than 10 μM, with 5 of them having IC50 values under 1 μM.
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Affiliation(s)
- Maria Zatsepin
- Molecular Modeling and Drug Design, Institute for Drug Research, The Hebrew University of Jerusalem , Jerusalem, 91120, Israel
| | - Angela Mattes
- Fraunhofer IGB , Institute for Interfacial Engineering and Biotechnology, Nobelstrasse 12, Stuttgart, 70569, Germany
| | - Steffen Rupp
- Fraunhofer IGB , Institute for Interfacial Engineering and Biotechnology, Nobelstrasse 12, Stuttgart, 70569, Germany
| | - Doris Finkelmeier
- Fraunhofer IGB , Institute for Interfacial Engineering and Biotechnology, Nobelstrasse 12, Stuttgart, 70569, Germany
| | - Arijit Basu
- Molecular Modeling and Drug Design, Institute for Drug Research, The Hebrew University of Jerusalem , Jerusalem, 91120, Israel
| | - Anke Burger-Kentischer
- Fraunhofer IGB , Institute for Interfacial Engineering and Biotechnology, Nobelstrasse 12, Stuttgart, 70569, Germany
| | - Amiram Goldblum
- Molecular Modeling and Drug Design, Institute for Drug Research, The Hebrew University of Jerusalem , Jerusalem, 91120, Israel
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Achek A, Yesudhas D, Choi S. Toll-like receptors: promising therapeutic targets for inflammatory diseases. Arch Pharm Res 2016; 39:1032-49. [PMID: 27515048 DOI: 10.1007/s12272-016-0806-9] [Citation(s) in RCA: 70] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2016] [Accepted: 08/01/2016] [Indexed: 12/19/2022]
Abstract
The health of living organisms is constantly challenged by bacterial and viral threats. The recognition of pathogenic microorganisms by diverse receptors triggers a variety of host defense mechanisms, leading to their eradication. Toll-like receptors (TLRs), which are type I transmembrane proteins, recognize specific signatures of the invading microbes and activate a cascade of downstream signals inducing the secretion of inflammatory cytokines, chemokines, and type I interferons. The TLR response not only counteracts the pathogens but also initiates and shapes the adaptive immune response. Under normal conditions, inflammation is downregulated after the removal of the pathogen and cellular debris. However, a dysfunctional TLR-mediated response maintains a chronic inflammatory state and leads to local and systemic deleterious effects in host cells and tissues. Such inappropriate TLR response has been attributed to the development and progression of multiple diseases such as cancer, autoimmune, and inflammatory diseases. In this review, we discuss the emerging role of TLRs in the pathogenesis of inflammatory diseases and how targeting of TLRs offers a promising therapeutic strategy for the prevention and treatment of various inflammatory diseases. Additionally, we highlight a number of TLR-targeting agents that are in the developmental stage or in clinical trials.
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Affiliation(s)
- Asma Achek
- Department of Molecular Science and Technology, Ajou University, Suwon, 443-749, Korea
| | - Dhanusha Yesudhas
- Department of Molecular Science and Technology, Ajou University, Suwon, 443-749, Korea
| | - Sangdun Choi
- Department of Molecular Science and Technology, Ajou University, Suwon, 443-749, Korea.
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Bao L, Zhang H, Mohan GC, Shen K, Chan LS. Differential expression of inflammation-related genes in IL-4 transgenic mice before and after the onset of atopic dermatitis skin lesions. Mol Cell Probes 2015; 30:30-8. [PMID: 26585782 DOI: 10.1016/j.mcp.2015.11.001] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2015] [Revised: 11/04/2015] [Accepted: 11/04/2015] [Indexed: 01/13/2023]
Abstract
IL-4 plays an important role in the pathogenesis of atopic dermatitis (AD), a common chronic inflammatory skin disease. We have generated IL-4 transgenic (Tg) mice by over-expressing IL-4 in the epidermis. These mice spontaneously develop chronic pruritic inflammatory skin lesions, which meet the clinical and histological diagnostic criteria for human AD. Systemic survey of immune-related genes in this mouse model, however, has not been performed. In this study, we utilize PCR array technique to examine hundreds of inflammation-related genes in the IL-4 Tg mice before and after the onset of skin lesions as well as in their wild type (WT) littermates. Only those genes with at least 2-fold up-regulation or down-regulation and with a P-value of less than 0.05 in comparison to WT controls were identified and analyzed. In the skin lesions, many chemokines, pro-inflammatory cytokines, and other AD-related factors are dysregulated compared to the wild type mice. Particularly, CXCL5, IL-1β, IL-24, IL-6, oncostatin M, PTGS2, FPR1 and REG3γ are up-regulated several hundred-fold. In the pre-lesional group that shows no obvious skin abnormality on clinical observation, 30 dysregulated genes are nevertheless identified though the fold changes are much less than that of the lesional group, including CCL6, CCL8, CCL11, CCL17, CXCL13, CXCL14, CXCR3 and IL-12Rβ2. Finally using ELISA, we demonstrate that 4 most dramatically up-regulated factors in the skin are also elevated in the peripheral blood of the IL-4 Tg mice. Taken together, our data have identified hundreds of dysregulated factors in the IL-4 Tg mice before and after the onset of skin lesions. Future detailed examination of these factors will shed light on our understanding of the development and progression of AD and help to discover important biomarkers for clinical AD diagnosis and treatment.
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Affiliation(s)
- Lei Bao
- Department of Dermatology, University of Illinois, Chicago, IL, USA.
| | - Huayi Zhang
- Department of Dermatology, University of Illinois, Chicago, IL, USA
| | - Girish C Mohan
- Department of Dermatology, University of Illinois, Chicago, IL, USA
| | - Kui Shen
- Department of Dermatology, University of Illinois, Chicago, IL, USA
| | - Lawrence S Chan
- Department of Dermatology, University of Illinois, Chicago, IL, USA; Department of Microbiology/Immunology, University of Illinois, Chicago, IL, USA; Medical Service, Jesse Brown VA Med Center, Chicago, IL, USA.
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Traks T, Keermann M, Karelson M, Rätsep R, Reimann E, Silm H, Vasar E, Kõks S, Kingo K. Polymorphisms in Toll-like receptor genes are associated with vitiligo. Front Genet 2015; 6:278. [PMID: 26442097 PMCID: PMC4563240 DOI: 10.3389/fgene.2015.00278] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2015] [Accepted: 08/19/2015] [Indexed: 12/15/2022] Open
Abstract
Background: The members of Toll-like receptor (TLR) family are responsible for recognizing various molecular patterns associated with pathogens. Their expression is not confined to immune cells and have been detected in skin cells such as keratinocytes and melanocytes. As part of a generated response to pathogens, TLRs are involved in inducing inflammatory mediators to combat these threats. It is therefore not surprising that TLRs have been implicated in inflammatory skin diseases, including atopic dermatitis and psoriasis. Likewise, as key players in autoimmunity, they have been associated with a number of autoimmune diseases. Based on this, the role of TLRs in vitiligo could be suspected, but is yet to be clearly established. Methods: In order to conduct a genetic association analysis, 30 SNPs were selected from TLR1-TLR8 and TLR10 regions to be genotyped in Estonian case-control cohort consisting of 139 vitiligo patients and 307 healthy control individuals. The patients were further analyzed in subgroups based on sex, age of onset, occurrence of vitiligo among relatives, extent of depigmented areas, vitiligo progression activity, appearance of Köbner's phenomenon, existence of halo naevi, and incidence of spontaneous repigmentation. Results: The most notable finding came with SNP rs179020 situated in TLR7 gene, that was associated in entire vitiligo (Padj = 0.0065) and also several subgroup analyses. Other single marker and haplotype analyses pointed to TLR3, TLR4, and TLR10 genes. Conclusions: This study investigated the genetic regions of nine TLR genes in relation to vitiligo susceptibility. The main results were the associations of TLR7 SNPs with vitiligo, while several other associations were obtained from the remaining TLR gene regions. This suggests that in addition to other inflammatory skin diseases, TLRs affect the development of vitiligo, thus making them interesting targets for future research.
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Affiliation(s)
- Tanel Traks
- Department of Dermatology, University of Tartu Tartu, Estonia ; Centre of Excellence for Translational Medicine, University of Tartu Tartu, Estonia
| | - Maris Keermann
- Department of Dermatology, University of Tartu Tartu, Estonia ; Clinic of Dermatology, Tartu University Hospital Tartu, Estonia
| | - Maire Karelson
- Department of Dermatology, University of Tartu Tartu, Estonia ; Clinic of Dermatology, Tartu University Hospital Tartu, Estonia
| | - Ranno Rätsep
- Department of Physiology, University of Tartu Tartu, Estonia
| | - Ene Reimann
- Department of Pathophysiology, University of Tartu Tartu, Estonia ; Department of Reproductive Biology, Estonian University of Life Sciences Tartu, Estonia
| | - Helgi Silm
- Department of Dermatology, University of Tartu Tartu, Estonia ; Clinic of Dermatology, Tartu University Hospital Tartu, Estonia
| | - Eero Vasar
- Centre of Excellence for Translational Medicine, University of Tartu Tartu, Estonia ; Department of Physiology, University of Tartu Tartu, Estonia
| | - Sulev Kõks
- Centre of Excellence for Translational Medicine, University of Tartu Tartu, Estonia ; Department of Pathophysiology, University of Tartu Tartu, Estonia ; Department of Reproductive Biology, Estonian University of Life Sciences Tartu, Estonia
| | - Külli Kingo
- Department of Dermatology, University of Tartu Tartu, Estonia ; Clinic of Dermatology, Tartu University Hospital Tartu, Estonia
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Affiliation(s)
- Yuxiao Hong
- Department of Dermatology, No.1 Hospital of China Medical University, Shenyang, China
| | - Bing Song
- 1] Department of Dermatology, No.1 Hospital of China Medical University, Shenyang, China [2] Tissue Engineering and Reparative Dentistry, Dental School of Cardiff Univeristy, Heath Park, Cardiff, UK
| | - Hong-Duo Chen
- Department of Dermatology, No.1 Hospital of China Medical University, Shenyang, China
| | - Xing-Hua Gao
- Department of Dermatology, No.1 Hospital of China Medical University, Shenyang, China
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