1
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Mai Y, Kobayashi Y, Kitahata H, Seo T, Nohara T, Itamoto S, Mai S, Kumamoto J, Nagayama M, Nishie W, Ujiie H, Natsuga K. Patterning in stratified epithelia depends on cell-cell adhesion. Life Sci Alliance 2024; 7:e202402893. [PMID: 39025524 PMCID: PMC11258421 DOI: 10.26508/lsa.202402893] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2024] [Revised: 06/25/2024] [Accepted: 06/26/2024] [Indexed: 07/20/2024] Open
Abstract
Epithelia consist of proliferating and differentiating cells that often display patterned arrangements. However, the mechanism regulating these spatial arrangements remains unclear. Here, we show that cell-cell adhesion dictates multicellular patterning in stratified epithelia. When cultured keratinocytes, a type of epithelial cell in the skin, are subjected to starvation, they spontaneously develop a pattern characterized by areas of high and low cell density. Pharmacological and knockout experiments show that adherens junctions are essential for patterning, whereas the mathematical model that only considers local cell-cell adhesion as a source of attractive interactions can form regions with high/low cell density. This phenomenon, called cell-cell adhesion-induced patterning (CAIP), influences cell differentiation and proliferation through Yes-associated protein modulation. Starvation, which induces CAIP, enhances the stratification of the epithelia. These findings highlight the intrinsic self-organizing property of epithelial cells.
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Affiliation(s)
- Yosuke Mai
- https://ror.org/02e16g702 Department of Dermatology, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, Japan
| | - Yasuaki Kobayashi
- Research Center of Mathematics for Social Creativity, Research Institute for Electronic Science, Hokkaido University, Sapporo, Japan
- Department of Mathematics, Faculty of Science, Josai University, Sakado, Japan
| | - Hiroyuki Kitahata
- Department of Physics, Graduate School of Science, Chiba University, Chiba, Japan
| | - Takashi Seo
- https://ror.org/02e16g702 Department of Dermatology, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, Japan
| | - Takuma Nohara
- https://ror.org/02e16g702 Department of Dermatology, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, Japan
| | - Sota Itamoto
- https://ror.org/02e16g702 Department of Dermatology, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, Japan
| | - Shoko Mai
- https://ror.org/02e16g702 Department of Dermatology, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, Japan
| | - Junichi Kumamoto
- Research Center of Mathematics for Social Creativity, Research Institute for Electronic Science, Hokkaido University, Sapporo, Japan
| | - Masaharu Nagayama
- Research Center of Mathematics for Social Creativity, Research Institute for Electronic Science, Hokkaido University, Sapporo, Japan
| | - Wataru Nishie
- https://ror.org/02e16g702 Department of Dermatology, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, Japan
| | - Hideyuki Ujiie
- https://ror.org/02e16g702 Department of Dermatology, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, Japan
| | - Ken Natsuga
- https://ror.org/02e16g702 Department of Dermatology, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, Japan
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2
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Otten ABC, Amarbayar O, Cai P, Cheng B, Qu K, Sun BK. The Long Noncoding RNA PRANCR Is Associated with Alternative Splicing of Fibronectin-1 in Keratinocytes. J Invest Dermatol 2023; 143:1825-1830.e6. [PMID: 36906126 PMCID: PMC10775970 DOI: 10.1016/j.jid.2023.01.038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2022] [Revised: 12/05/2022] [Accepted: 01/20/2023] [Indexed: 03/13/2023]
Affiliation(s)
- Auke B C Otten
- Department of Dermatology, University of California San Diego, San Diego, California, USA; Department of Physiology, VU Medical Center, Amsterdam UMC, Amsterdam, the Netherlands; Department of Molecular Cell Biology and Immunology, VU Medical Center, Amsterdam UMC, Amsterdam, the Netherlands.
| | - Oyumergen Amarbayar
- Department of Dermatology, University of California San Diego, San Diego, California, USA
| | - Pengfei Cai
- Division of Life Sciences and Medicine, Department of Oncology, The First Affiliated Hospital of USTC, School of Basic Medical Sciences, University of Science and Technology of China, Hefei, China
| | - Binbin Cheng
- Department of Dermatology, University of California San Diego, San Diego, California, USA
| | - Kun Qu
- Division of Life Sciences and Medicine, Department of Oncology, The First Affiliated Hospital of USTC, School of Basic Medical Sciences, University of Science and Technology of China, Hefei, China
| | - Bryan K Sun
- Department of Dermatology, University of California San Diego, San Diego, California, USA
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3
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Ghaffarinia A, Ayaydin F, Póliska S, Manczinger M, Bolla BS, Flink LB, Balogh F, Veréb Z, Bozó R, Szabó K, Bata-Csörgő Z, Kemény L. Psoriatic Resolved Skin Epidermal Keratinocytes Retain Disease-Residual Transcriptomic and Epigenomic Profiles. Int J Mol Sci 2023; 24:ijms24054556. [PMID: 36901987 PMCID: PMC10002496 DOI: 10.3390/ijms24054556] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2022] [Revised: 02/17/2023] [Accepted: 02/21/2023] [Indexed: 03/02/2023] Open
Abstract
The disease-residual transcriptomic profile (DRTP) within psoriatic healed/resolved skin and epidermal tissue-resident memory T (TRM) cells have been proposed to be crucial for the recurrence of old lesions. However, it is unclear whether epidermal keratinocytes are involved in disease recurrence. There is increasing evidence regarding the importance of epigenetic mechanisms in the pathogenesis of psoriasis. Nonetheless, the epigenetic changes that contribute to the recurrence of psoriasis remain unknown. The aim of this study was to elucidate the role of keratinocytes in psoriasis relapse. The epigenetic marks 5-methylcytosine (5-mC) and 5-hydroxymethylcytosine (5-hmC) were visualized using immunofluorescence staining, and RNA sequencing was performed on paired never-lesional and resolved epidermal and dermal compartments of skin from psoriasis patients. We observed diminished 5-mC and 5-hmC amounts and decreased mRNA expression of the ten-eleven translocation (TET) 3 enzyme in the resolved epidermis. SAMHD1, C10orf99, and AKR1B10: the highly dysregulated genes in resolved epidermis are known to be associated with pathogenesis of psoriasis, and the DRTP was enriched in WNT, TNF, and mTOR signaling pathways. Our results suggest that epigenetic changes detected in epidermal keratinocytes of resolved skin may be responsible for the DRTP in the same regions. Thus, the DRTP of keratinocytes may contribute to site-specific local relapse.
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Affiliation(s)
- Ameneh Ghaffarinia
- HCEMM-USZ Skin Research Group, H-6720 Szeged, Hungary
- Department of Dermatology and Allergology, Albert Szent-Györgyi Medical School, University of Szeged, H-6720 Szeged, Hungary
| | - Ferhan Ayaydin
- HCEMM-USZ, Functional Cell Biology and Immunology, Advanced Core Facility, H-6728 Szeged, Hungary
- Laboratory of Cellular Imaging, Biological Research Centre, Eötvös Loránd Research Network, H-6726 Szeged, Hungary
- Institute of Plant Biology, Biological Research Centre, H-6726 Szeged, Hungary
| | - Szilárd Póliska
- Genomic Medicine and Bioinformatics Core Facility, Department of Biochemistry and Molecular Biology, Faculty of Medicine, University of Debrecen, H-4032 Debrecen, Hungary
| | - Máté Manczinger
- Department of Dermatology and Allergology, Albert Szent-Györgyi Medical School, University of Szeged, H-6720 Szeged, Hungary
- Systems Immunology Research Group, Institute of Biochemistry, Biological Research Centre, ELKH, H-6726 Szeged, Hungary
- HCEMM-Systems Immunology Research Group, H-6726 Szeged, Hungary
| | - Beáta Szilvia Bolla
- HCEMM-USZ Skin Research Group, H-6720 Szeged, Hungary
- Department of Dermatology and Allergology, Albert Szent-Györgyi Medical School, University of Szeged, H-6720 Szeged, Hungary
| | - Lili Borbála Flink
- HCEMM-USZ Skin Research Group, H-6720 Szeged, Hungary
- Department of Dermatology and Allergology, Albert Szent-Györgyi Medical School, University of Szeged, H-6720 Szeged, Hungary
| | - Fanni Balogh
- HCEMM-USZ Skin Research Group, H-6720 Szeged, Hungary
- Department of Dermatology and Allergology, Albert Szent-Györgyi Medical School, University of Szeged, H-6720 Szeged, Hungary
- ELKH-SZTE Dermatological Research Group, Department of Dermatology and Allergology, University of Szeged, H-6720 Szeged, Hungary
| | - Zoltán Veréb
- Regenerative Medicine and Cellular Pharmacology Laboratory (HECRIN), Department of Dermatology and Allergology, University of Szeged, H-6720 Szeged, Hungary
- Research Institute of Translational Biomedicine, Department of Dermatology and Allergology, University of Szeged, H-6720 Szeged, Hungary
| | - Renáta Bozó
- HCEMM-USZ Skin Research Group, H-6720 Szeged, Hungary
- Department of Dermatology and Allergology, Albert Szent-Györgyi Medical School, University of Szeged, H-6720 Szeged, Hungary
- ELKH-SZTE Dermatological Research Group, Department of Dermatology and Allergology, University of Szeged, H-6720 Szeged, Hungary
| | - Kornélia Szabó
- HCEMM-USZ Skin Research Group, H-6720 Szeged, Hungary
- Department of Dermatology and Allergology, Albert Szent-Györgyi Medical School, University of Szeged, H-6720 Szeged, Hungary
- ELKH-SZTE Dermatological Research Group, Department of Dermatology and Allergology, University of Szeged, H-6720 Szeged, Hungary
| | - Zsuzsanna Bata-Csörgő
- HCEMM-USZ Skin Research Group, H-6720 Szeged, Hungary
- Department of Dermatology and Allergology, Albert Szent-Györgyi Medical School, University of Szeged, H-6720 Szeged, Hungary
- ELKH-SZTE Dermatological Research Group, Department of Dermatology and Allergology, University of Szeged, H-6720 Szeged, Hungary
| | - Lajos Kemény
- HCEMM-USZ Skin Research Group, H-6720 Szeged, Hungary
- Department of Dermatology and Allergology, Albert Szent-Györgyi Medical School, University of Szeged, H-6720 Szeged, Hungary
- ELKH-SZTE Dermatological Research Group, Department of Dermatology and Allergology, University of Szeged, H-6720 Szeged, Hungary
- Correspondence:
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4
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Krishnan VS, Kõks S. Transcriptional Basis of Psoriasis from Large Scale Gene Expression Studies: The Importance of Moving towards a Precision Medicine Approach. Int J Mol Sci 2022; 23:6130. [PMID: 35682804 PMCID: PMC9181806 DOI: 10.3390/ijms23116130] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2022] [Revised: 05/23/2022] [Accepted: 05/26/2022] [Indexed: 12/14/2022] Open
Abstract
Transcriptome profiling techniques, such as microarrays and RNA sequencing (RNA-seq), are valuable tools for deciphering the regulatory network underlying psoriasis and have revealed large number of differentially expressed genes in lesional and non-lesional skin. Such approaches provide a more precise measurement of transcript levels and their isoforms than any other methods. Large cohort transcriptomic analyses have greatly improved our understanding of the physiological and molecular mechanisms underlying disease pathogenesis and progression. Here, we mostly review the findings of some important large scale psoriatic transcriptomic studies, and the benefits of such studies in elucidating potential therapeutic targets and biomarkers for psoriasis treatment. We also emphasised the importance of looking into the alternatively spliced RNA isoforms/transcripts in psoriasis, rather than focussing only on the gene-level annotation. The neutrophil and blood transcriptome signature in psoriasis is also briefly reviewed, as it provides the immune status information of patients and is a less invasive platform. The application of precision medicine in current management of psoriasis, by combining transcriptomic data, improves the clinical response outcome in individual patients. Drugs tailored to individual patient's genetic profile will greatly improve patient outcome and cost savings for the healthcare system.
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Affiliation(s)
- Vidya S. Krishnan
- Centre for Molecular Medicine and Innovative Therapeutics, Murdoch University, Discovery Way, Murdoch, WA 6150, Australia;
- Perron Institute for Neurological and Translational Science, 8 Verdun Street, Nedlands, WA 6009, Australia
| | - Sulev Kõks
- Centre for Molecular Medicine and Innovative Therapeutics, Murdoch University, Discovery Way, Murdoch, WA 6150, Australia;
- Perron Institute for Neurological and Translational Science, 8 Verdun Street, Nedlands, WA 6009, Australia
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5
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Kelemen E, Ádám É, Sági SM, Göblös A, Kemény L, Bata-Csörgő Z, Széll M, Danis J. Psoriasis-Associated Inflammatory Conditions Induce IL-23 mRNA Expression in Normal Human Epidermal Keratinocytes. Int J Mol Sci 2022; 23:540. [PMID: 35008970 PMCID: PMC8745281 DOI: 10.3390/ijms23010540] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2021] [Revised: 12/28/2021] [Accepted: 12/30/2021] [Indexed: 12/14/2022] Open
Abstract
Psoriasis is a multifactorial, chronic inflammatory skin disease, the development of which is affected by both genetic and environmental factors. Cytosolic nucleic acid fragments, recognized as pathogen- and danger-associated molecular patterns, are highly abundant in psoriatic skin. It is known that psoriatic skin exhibits increased levels of IL-23 compared to healthy skin. However, the relationship between free nucleic acid levels and IL-23 expression has not been clarified yet. To examine a molecular mechanism by which nucleic acids potentially modulate IL-23 levels, an in vitro system was developed to investigate the IL-23 mRNA expression of normal human epidermal keratinocytes under psoriasis-like circumstances. This system was established using synthetic nucleic acid analogues (poly(dA:dT) and poly(I:C)). Signaling pathways, receptor involvement and the effect of PRINS, a long non-coding RNA previously identified and characterized by our research group, were analyzed to better understand the regulation of IL-23 in keratinocytes. Our results indicate that free nucleic acids regulate epithelial IL-23 mRNA expression through the TLR3 receptor and specific signaling pathways, thereby, contributing to the development of an inflammatory milieu favorable for the appearance of psoriatic symptoms. A moderate negative correlation was confirmed between the nucleic-acid-induced IL-23 mRNA level and the rate of its decrease upon PRINS overexpression.
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Affiliation(s)
- Evelyn Kelemen
- Department of Dermatology and Allergology, University of Szeged, 6720 Szeged, Hungary; (E.K.); (S.M.S.); (L.K.); (Z.B.-C.)
- Department of Medical Genetics, University of Szeged, 6720 Szeged, Hungary;
| | - Éva Ádám
- Department of Medical Genetics, University of Szeged, 6720 Szeged, Hungary;
| | - Stella Márta Sági
- Department of Dermatology and Allergology, University of Szeged, 6720 Szeged, Hungary; (E.K.); (S.M.S.); (L.K.); (Z.B.-C.)
| | - Anikó Göblös
- MTA-SZTE Dermatological Research Group, Eötvös Loránd Research Network, 6720 Szeged, Hungary; (A.G.); (J.D.)
| | - Lajos Kemény
- Department of Dermatology and Allergology, University of Szeged, 6720 Szeged, Hungary; (E.K.); (S.M.S.); (L.K.); (Z.B.-C.)
- MTA-SZTE Dermatological Research Group, Eötvös Loránd Research Network, 6720 Szeged, Hungary; (A.G.); (J.D.)
- HCEMM-USZ Skin Research Group, 6720 Szeged, Hungary
| | - Zsuzsanna Bata-Csörgő
- Department of Dermatology and Allergology, University of Szeged, 6720 Szeged, Hungary; (E.K.); (S.M.S.); (L.K.); (Z.B.-C.)
- MTA-SZTE Dermatological Research Group, Eötvös Loránd Research Network, 6720 Szeged, Hungary; (A.G.); (J.D.)
| | - Márta Széll
- Department of Medical Genetics, University of Szeged, 6720 Szeged, Hungary;
- MTA-SZTE Dermatological Research Group, Eötvös Loránd Research Network, 6720 Szeged, Hungary; (A.G.); (J.D.)
| | - Judit Danis
- MTA-SZTE Dermatological Research Group, Eötvös Loránd Research Network, 6720 Szeged, Hungary; (A.G.); (J.D.)
- HCEMM-USZ Skin Research Group, 6720 Szeged, Hungary
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6
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Göblös A, Varga E, Farkas K, Árvai K, Kemény L. Genetic Investigation of Inverse Psoriasis. Life (Basel) 2021; 11:life11070654. [PMID: 34357026 PMCID: PMC8306123 DOI: 10.3390/life11070654] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2021] [Revised: 06/27/2021] [Accepted: 07/01/2021] [Indexed: 12/03/2022] Open
Abstract
Inverse psoriasis is considered to be a rare variant of plaque-type psoriasis and is associated with significantly impaired quality of life. Clinical manifestations and treatment options are somewhat different for each subtype. Identifying genetic variants that contribute to the susceptibility of different types of psoriasis might improve understanding of the etiology of the disease. Since we have no current knowledge about the genetic background of inverse psoriasis, whole exome sequencing was used to comprehensively assess genetic variations in five patients with exclusively inverse lesions. We detected six potentially pathogenic rare (MAF < 0.01) sequence variants that occurred in all investigated patients. The corresponding mutated genes were FN1, FBLN1, MYH7B, MST1R, RHOD, and SCN10A. Several mutations identified in this study are known to cause disease, but roles in psoriasis or other papulosquamous diseases have not previously been reported. Interestingly, potentially causative variants of established psoriasis-susceptibility genes were not identified. These outcomes are in agreement with our hypothesis that the inverse subtype is a different entity from plaque-type psoriasis.
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Affiliation(s)
- Anikó Göblös
- MTA-SZTE Dermatological Research Group, Eötvös Loránd Research Network, 6720 Szeged, Hungary;
- Correspondence: ; Tel.: +36-205-541-692
| | - Emese Varga
- Department of Dermatology and Allergology, University of Szeged, 6720 Szeged, Hungary;
| | - Katalin Farkas
- Department of Medical Genetics, University of Szeged, 6720 Szeged, Hungary;
| | | | - Lajos Kemény
- MTA-SZTE Dermatological Research Group, Eötvös Loránd Research Network, 6720 Szeged, Hungary;
- Department of Dermatology and Allergology, University of Szeged, 6720 Szeged, Hungary;
- HCEMM-USZ Skin Research Group, University of Szeged, 6720 Szeged, Hungary
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7
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The Psoriatic Nonlesional Skin: A Battlefield between Susceptibility and Protective Factors. J Invest Dermatol 2021; 141:2785-2790. [PMID: 34216605 DOI: 10.1016/j.jid.2021.05.020] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2021] [Revised: 05/20/2021] [Accepted: 05/25/2021] [Indexed: 12/31/2022]
Abstract
In the last two decades, large-scale gene-expression studies on psoriatic skin samples revealed that even though nonlesional skin is macroscopically identical to healthy skin, it harbors several molecular differences. Originally, these molecular differences were thought to represent susceptibility factors for plaque formation. However, we review in this paper the several factors of immune regulation and structural alteration that are specific for the nonlesional skin and serve as protective factors by counteracting plaque formation and contributing to the maintenance of the nonlesional phenotype.
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8
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Bozó R, Danis J, Flink LB, Vidács DL, Kemény L, Bata-Csörgő Z. Stress-Related Regulation Is Abnormal in the Psoriatic Uninvolved Skin. Life (Basel) 2021; 11:life11070599. [PMID: 34201431 PMCID: PMC8303303 DOI: 10.3390/life11070599] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2021] [Revised: 06/14/2021] [Accepted: 06/21/2021] [Indexed: 11/16/2022] Open
Abstract
Keratinocyte stress-response of the uninvolved psoriatic epidermis is known to be altered compared to healthy cells. Therefore, we aimed to reveal potential mechanisms underlying this alteration. We compared the expression of annotated cell-stress-related proteins between uninvolved psoriatic and healthy skin using the protein array method. Data were analyzed by the Reactome over-representation test. We found that p27/CDKN1B and cytochrome C showed at least a two-fold increase, while cyclooxygenase-2, indolamine-2,3-dioxygenase-1, serum paraoxonase 1, serum paraoxonase 3, serine-46-phosphorylated tumor protein p53, and superoxide-dismutase-2 showed a two-fold decrease in expression in the uninvolved skin. Over-representation analysis suggested the Forkhead-box protein O (FOXO)-mediated transcription as the most significant pathway affected by the differently expressed cell-stress-related proteins (DECSRPs). DECSRPs indicate increased FOXO-mediated transcription of cell-cycle genes and reduced interleukin-signaling in the psoriatic uninvolved skin. Nuclear positivity of the FOXO-signaling-related p27/CDKN1B and FOXO1 are negatively correlated with the disease severity and showed increased expression in the uninvolved epidermis and also in healthy primary keratinocytes, which were grown on cartilage oligomeric matrix protein-coated surfaces. Our results indicate a cell-cycle inhibitory process, as a stress-related compensatory mechanism in the uninvolved epidermis, that could be responsible for blocking keratinocyte hyperproliferation in the psoriatic uninvolved skin, thus maintaining the symptomless skin phenotype.
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Affiliation(s)
- Renáta Bozó
- Department of Dermatology and Allergology, University of Szeged, 6720 Szeged, Hungary; (J.D.); (L.B.F.); (D.L.V.); (L.K.); (Z.B.-C.)
- HCEMM-USZ Skin Research Group, 6720 Szeged, Hungary
- Correspondence: ; Tel.: +36-62-54-64-02
| | - Judit Danis
- Department of Dermatology and Allergology, University of Szeged, 6720 Szeged, Hungary; (J.D.); (L.B.F.); (D.L.V.); (L.K.); (Z.B.-C.)
- HCEMM-USZ Skin Research Group, 6720 Szeged, Hungary
- MTA-SZTE Dermatological Research Group, Eötvös Loránd Research Network, 6720 Szeged, Hungary
| | - Lili Borbála Flink
- Department of Dermatology and Allergology, University of Szeged, 6720 Szeged, Hungary; (J.D.); (L.B.F.); (D.L.V.); (L.K.); (Z.B.-C.)
| | - Dániel László Vidács
- Department of Dermatology and Allergology, University of Szeged, 6720 Szeged, Hungary; (J.D.); (L.B.F.); (D.L.V.); (L.K.); (Z.B.-C.)
| | - Lajos Kemény
- Department of Dermatology and Allergology, University of Szeged, 6720 Szeged, Hungary; (J.D.); (L.B.F.); (D.L.V.); (L.K.); (Z.B.-C.)
- HCEMM-USZ Skin Research Group, 6720 Szeged, Hungary
- MTA-SZTE Dermatological Research Group, Eötvös Loránd Research Network, 6720 Szeged, Hungary
| | - Zsuzsanna Bata-Csörgő
- Department of Dermatology and Allergology, University of Szeged, 6720 Szeged, Hungary; (J.D.); (L.B.F.); (D.L.V.); (L.K.); (Z.B.-C.)
- HCEMM-USZ Skin Research Group, 6720 Szeged, Hungary
- MTA-SZTE Dermatological Research Group, Eötvös Loránd Research Network, 6720 Szeged, Hungary
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9
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Bozó R, Flink LB, Belső N, Gubán B, Széll M, Kemény L, Bata-Csörgő Z. Could basement membrane alterations, resembling micro-wounds at the dermo-epidermal junction in psoriatic non-lesional skin, make the skin susceptible to lesion formation? Exp Dermatol 2021; 30:765-772. [PMID: 33348435 DOI: 10.1111/exd.14267] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2020] [Revised: 11/26/2020] [Accepted: 12/17/2020] [Indexed: 12/12/2022]
Abstract
Current data suggest that tissue microenvironment control immune functions. Therefore, understanding the tissue environment in which immune activation occurs will enhance our capability to interfere with abnormal immune pathology. Here, we argue that studying the constitutively abnormal functions of clinically uninvolved psoriatic skin in patients with plaque type psoriasis is very important to better understand psoriasis pathobiology, because non-lesional skin provides the tissue environment in which the psoriatic lesion develops. A key question in psoriasis is what initiates the abnormal, uncontrolled immune activation in the first place and the answer may lie in the skin. In light of this concept, we summarize abnormalities at the dermal-epidermal junction region which shows a special "non-healing-like" micro-wound phenotype in the psoriatic non-lesional skin that may act as a crucial susceptibility factor in the development of the disease.
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Affiliation(s)
- Renáta Bozó
- Department of Dermatology and Allergology, University of Szeged, Szeged, Hungary.,HCEMM-SZTE Skin Research Group, Szeged, Hungary
| | - Lili Borbála Flink
- Department of Dermatology and Allergology, University of Szeged, Szeged, Hungary
| | - Nóra Belső
- Department of Dermatology and Allergology, University of Szeged, Szeged, Hungary.,HCEMM-SZTE Skin Research Group, Szeged, Hungary
| | - Barbara Gubán
- Department of Dermatology and Allergology, University of Szeged, Szeged, Hungary
| | - Márta Széll
- MTA-SZTE Dermatological Research Group, Szeged, Hungary.,Department of Medical Genetics, University of Szeged, Szeged, Hungary
| | - Lajos Kemény
- Department of Dermatology and Allergology, University of Szeged, Szeged, Hungary.,HCEMM-SZTE Skin Research Group, Szeged, Hungary.,MTA-SZTE Dermatological Research Group, Szeged, Hungary
| | - Zsuzsanna Bata-Csörgő
- Department of Dermatology and Allergology, University of Szeged, Szeged, Hungary.,HCEMM-SZTE Skin Research Group, Szeged, Hungary.,MTA-SZTE Dermatological Research Group, Szeged, Hungary
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10
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Bozó R, Szél E, Danis J, Gubán B, Bata-Csörgő Z, Szabó K, Kemény L, Groma G. Cartilage Oligomeric Matrix Protein Negatively Influences Keratinocyte Proliferation via α5β1-Integrin: Potential Relevance of Altered Cartilage Oligomeric Matrix Protein Expression in Psoriasis. J Invest Dermatol 2020; 140:1733-1742.e7. [PMID: 32057837 DOI: 10.1016/j.jid.2019.12.037] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2019] [Revised: 11/27/2019] [Accepted: 12/06/2019] [Indexed: 02/06/2023]
Abstract
In psoriasis, nonlesional skin shows alterations at the dermal-epidermal junction compared with healthy skin. Cartilage oligomeric matrix protein (COMP) is part of the papillary dermis of healthy skin, and its expression has not yet been studied in psoriatic skin. In this study, we found that COMP localization extended deeper into the dermis and formed a more continuous layer in psoriatic nonlesional skin compared with healthy skin, whereas in psoriatic lesions, COMP showed a partially discontinuous deposition at the dermal-epidermal junction. COMP and β1-integrin showed strong colocalization in nonlesional skin, where the laminin layer within the basement membrane is discontinuous. In in vitro models, the presence of exogenous COMP decreased the proliferation rate of keratinocytes, and this proliferation-suppressing effect was diminished by blocking α5β1-integrin. Our results suggest that COMP can interact with α5β1-integrin of basal keratinocytes through the disrupted basement membrane, and this interaction might stabilize the epidermis in the nonlesional state by contributing to the suppression of keratinocyte proliferation. The antiproliferative effect of COMP is likely to be relevant to other skin diseases in which chronic nonhealing wounds are coupled with massive COMP accumulation.
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Affiliation(s)
- Renáta Bozó
- Department of Dermatology and Allergology University of Szeged, Szeged, Hungary
| | - Edit Szél
- Department of Dermatology and Allergology University of Szeged, Szeged, Hungary
| | - Judit Danis
- Department of Dermatology and Allergology University of Szeged, Szeged, Hungary; MTA-SZTE Dermatological Research Group, Szeged, Hungary
| | - Barbara Gubán
- Department of Dermatology and Allergology University of Szeged, Szeged, Hungary
| | - Zsuzsanna Bata-Csörgő
- Department of Dermatology and Allergology University of Szeged, Szeged, Hungary; MTA-SZTE Dermatological Research Group, Szeged, Hungary
| | - Kornélia Szabó
- Department of Dermatology and Allergology University of Szeged, Szeged, Hungary; MTA-SZTE Dermatological Research Group, Szeged, Hungary
| | - Lajos Kemény
- Department of Dermatology and Allergology University of Szeged, Szeged, Hungary; MTA-SZTE Dermatological Research Group, Szeged, Hungary; HCEMM-SZTE Skin Research Group, Szeged, Hungary
| | - Gergely Groma
- Department of Dermatology and Allergology University of Szeged, Szeged, Hungary; MTA-SZTE Dermatological Research Group, Szeged, Hungary.
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11
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The Psoriasis Therapeutic Potential of a Novel Short Laminin Peptide C16. Int J Mol Sci 2019; 20:ijms20133144. [PMID: 31252620 PMCID: PMC6651782 DOI: 10.3390/ijms20133144] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2019] [Accepted: 06/25/2019] [Indexed: 01/18/2023] Open
Abstract
Psoriasis is a chronic inflammatory skin disease characterized by excessive growth of keratinocytes and hyperkeratosis in the epidermis. An abnormality of the non-lesional epidermis at an early stage of psoriasis is involved in triggering inflammatory cell infiltration into the dermis. Integrin α5β1 acts as a receptor for fibronectin and has been found to be overexpressed in non-lesional psoriatic epidermis. To investigate whether α5β1 integrin has a potential as a drug target for psoriasis treatment, the α5β1 integrin-binding peptide, C16, was used to obstruct the HaCat keratinocyte cellular responses induced by fibronectin (Fn) in culture and psoriasis-like skin inflammation induced in mice by imiquimod (IMQ). The C16 exhibited antagonistic activity against α5β1 integrin in HaCat cells, with evidence of suppression of the Fn-mediated proliferative, cytoskeletal, and inflammatory responses. Topical treatment with C16 greatly reduced the IMQ-induced epidermal hyperplasia, infiltration of neutrophils/macrophages, and expression of pro-inflammatory mediators in mouse skin. The C16SP (C16-derived short peptide; DITYVRLKF) also exhibited antagonistic activity, suppressing α5β1 integrin activity in culture, and reducing IMQ-induced skin inflammation. Taken together, this study provides the first evidence that α5β1 integrin may be a potential drug target for psoriasis. The synthetic C16 peptide may serve as an agent for psoriasis therapy.
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12
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Szlavicz E, Olah P, Szabo K, Pagani F, Bata-Csorgo Z, Kemeny L, Szell M. Analysis of psoriasis-relevant gene expression and exon usage alterations after silencing of SR-rich splicing regulators. Exp Dermatol 2018. [DOI: 10.1111/exd.13530] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Eszter Szlavicz
- Faculty of Medicine; Department of Dermatology and Allergology; University of Szeged; Szeged Hungary
- Faculty of Medicine; Department of Dermatology, Venereology and Oncodermatology; University of Pécs; Pécs Hungary
| | - Peter Olah
- Faculty of Medicine; Department of Dermatology, Venereology and Oncodermatology; University of Pécs; Pécs Hungary
- Department of Dermatology; University Hospital Düsseldorf; Düsseldorf Germany
| | - Kornélia Szabo
- Faculty of Medicine; Department of Dermatology and Allergology; University of Szeged; Szeged Hungary
- MTA-SZTE Dermatological Research Group; University of Szeged; Szeged Hungary
| | - Franco Pagani
- International Centre for Genetic Engineering and Biotechnology; Trieste Italy
| | - Zsuzsanna Bata-Csorgo
- Faculty of Medicine; Department of Dermatology and Allergology; University of Szeged; Szeged Hungary
- MTA-SZTE Dermatological Research Group; University of Szeged; Szeged Hungary
| | - Lajos Kemeny
- Faculty of Medicine; Department of Dermatology and Allergology; University of Szeged; Szeged Hungary
- MTA-SZTE Dermatological Research Group; University of Szeged; Szeged Hungary
| | - Márta Szell
- MTA-SZTE Dermatological Research Group; University of Szeged; Szeged Hungary
- Faculty of Medicine; Department of Medical Genetics; University of Szeged; Szeged Hungary
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13
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Pothoven KL, Schleimer RP. The barrier hypothesis and Oncostatin M: Restoration of epithelial barrier function as a novel therapeutic strategy for the treatment of type 2 inflammatory disease. Tissue Barriers 2017; 5:e1341367. [PMID: 28665760 DOI: 10.1080/21688370.2017.1341367] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
Mucosal epithelium maintains tissue homeostasis through many processes, including epithelial barrier function, which separates the environment from the tissue. The barrier hypothesis of type 2 inflammatory disease postulates that epithelial and epidermal barrier dysfunction, which cause inappropriate exposure to the environment, can result in allergic sensitization and development of type 2 inflammatory disease. The restoration of barrier dysfunction once it's lost, or the prevention of barrier dysfunction, have the potential to be exciting new therapeutic strategies for the treatment of type 2 inflammatory disease. Neutrophil-derived Oncostatin M has been shown to be a potent disrupter of epithelial barrier function through the induction of epithelial-mesenchymal transition (EMT). This review will discuss these events and outline several points along this axis at which therapeutic intervention could be beneficial for the treatment of type 2 inflammatory diseases.
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Affiliation(s)
- Kathryn L Pothoven
- a Division of Allergy-Immunology, Department of Medicine , Northwestern University Feinberg School of Medicine , Chicago , IL , USA.,b Driskill Graduate Program , Northwestern University Feinberg School of Medicine , Chicago , IL , USA.,c Immunology Program, Benaroya Research Institute at Virginia Mason , Seattle , WA , USA
| | - Robert P Schleimer
- a Division of Allergy-Immunology, Department of Medicine , Northwestern University Feinberg School of Medicine , Chicago , IL , USA.,d Departments of Otolaryngology and Microbiology-Immunology , Northwestern University Feinberg School of Medicine , Chicago , IL , USA
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14
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Szlavicz E, Szabo K, Groma G, Bata-Csorgo Z, Pagani F, Kemeny L, Szell M. Splicing factors differentially expressed in psoriasis alter mRNA maturation of disease-associated EDA+ fibronectin. Mol Cell Biochem 2017; 436:189-199. [PMID: 28589370 DOI: 10.1007/s11010-017-3090-1] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2017] [Accepted: 06/01/2017] [Indexed: 12/17/2022]
Abstract
The EDA+ fibronectin splicing variant is overexpressed in psoriatic non-lesional epidermis and sensitizes keratinocytes to mitogenic signals. However, regulation of its abundance is only partially understood. In our recent cDNA microarray experiment, we identified three SR-rich splicing factors-splicing factor, arginine/serine-rich 18 (SFRS18), peptidyl-prolyl cis-trans isomerase G (PPIG), and luc-7 like protein 3 (LUC7L3)-which might be implicated in the preactivated states of keratinocytes in psoriatic non-involved skin and could also contribute to the regulation of fibronectin mRNA maturation. In this study, we investigated the role of LUC7L3, PPIG, and SFRS18 in psoriasis and in the mRNA maturation process of fibronectin. Regarding tissue staining experiments, we were able to demonstrate a characteristic distribution of the splicing factors in healthy, psoriatic non-involved and involved epidermis. Moreover, the expression profiles of these SR-rich proteins were found to be very similar in synchronized keratinocytes. Contribution of splicing facwwtors to the EDA+ fibronectin formation was also confirmed: their siRNA silencing leads to altered fibronectin mRNA and protein expression patterns, suggesting the participation in the EDA domain inclusion. Our results indicate that LUC7L3, PPIG, and SFRS18 are not only implicated in EDA+ fibronectin formation, but also that they could possess multiple roles in psoriasis-associated molecular abnormalities.
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Affiliation(s)
- E Szlavicz
- Department of Dermatology and Allergology, Faculty of Medicine, University of Szeged, 6 Korányi fasor, Szeged, 6720, Hungary.
| | - K Szabo
- MTA-SZTE Dermatological Research Group, Szeged, Hungary
| | - G Groma
- MTA-SZTE Dermatological Research Group, Szeged, Hungary
| | - Z Bata-Csorgo
- Department of Dermatology and Allergology, Faculty of Medicine, University of Szeged, 6 Korányi fasor, Szeged, 6720, Hungary
- MTA-SZTE Dermatological Research Group, Szeged, Hungary
| | - F Pagani
- International Centre for Genetic Engineering and Biotechnology, Trieste, Italy
| | - L Kemeny
- Department of Dermatology and Allergology, Faculty of Medicine, University of Szeged, 6 Korányi fasor, Szeged, 6720, Hungary
- MTA-SZTE Dermatological Research Group, Szeged, Hungary
| | - M Szell
- MTA-SZTE Dermatological Research Group, Szeged, Hungary
- Department of Medical Genetics, Faculty of Medicine, University of Szeged, Szeged, Hungary
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15
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Pongpairoj K, McFadden JP. Psoriasis, extradomain A+ fibronectin and the extracellular matrix. Br J Dermatol 2016; 174:486. [PMID: 27002573 DOI: 10.1111/bjd.14442] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- K Pongpairoj
- Department of Cutaneous Allergy, St. John's Institute of Dermatology, King's College, Guy's Hospital, London, U.K.
| | - J P McFadden
- Department of Cutaneous Allergy, St. John's Institute of Dermatology, King's College, Guy's Hospital, London, U.K
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16
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Széll M, Danis J, Bata-Csörgő Z, Kemény L. PRINS, a primate-specific long non-coding RNA, plays a role in the keratinocyte stress response and psoriasis pathogenesis. Pflugers Arch 2016; 468:935-43. [PMID: 26935426 PMCID: PMC4893059 DOI: 10.1007/s00424-016-1803-z] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2015] [Accepted: 02/23/2016] [Indexed: 12/30/2022]
Abstract
In the last few years with the recent emergence of high-throughput technologies, thousands of long non-coding RNAs (lncRNAs) have been identified in the human genome. However, assigning functional annotation and determining cellular contexts for these RNAs are still in its infancy. As information gained about lncRNA structure, interacting partners, and roles in human diseases may be helpful in the characterization of novel lncRNAs, we review our knowledge on a selected group of lncRNAs that were identified serendipitously years ago by large-scale gene expression methods used to study human diseases. In particular, we focus on the Psoriasis-susceptibility-Related RNA Gene Induced by Stress (PRINS) lncRNA, first identified by our research group as a transcript highest expressed in psoriatic non-lesional epidermis. Results gathered for PRINS in the last 10 years indicate that it is conserved in primates and plays a role in keratinocyte stress response. Elevated levels of PRINS expression in psoriatic non-lesional keratinocytes alter the stress response of non-lesional epidermis and contribute to disease pathogenesis. Finally, we propose a categorization for the PRINS lncRNA based on a recently elaborated system for lncRNA classification.
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Affiliation(s)
- Márta Széll
- Department of Medical Genetics, Faculty of Medicine, University of Szeged, Szeged, Somogyi B. u. 4, 6720, Hungary. .,MTA-SZTE Dermatological Research Group, Szeged, Korányi fasor 6, 6720, Hungary.
| | - Judit Danis
- Department of Dermatology and Allergology, Faculty of Medicine, University of Szeged, Szeged, Korányi fasor 6, 6720, Hungary
| | - Zsuzsanna Bata-Csörgő
- MTA-SZTE Dermatological Research Group, Szeged, Korányi fasor 6, 6720, Hungary.,Department of Dermatology and Allergology, Faculty of Medicine, University of Szeged, Szeged, Korányi fasor 6, 6720, Hungary
| | - Lajos Kemény
- MTA-SZTE Dermatological Research Group, Szeged, Korányi fasor 6, 6720, Hungary.,Department of Dermatology and Allergology, Faculty of Medicine, University of Szeged, Szeged, Korányi fasor 6, 6720, Hungary
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17
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Gubán B, Vas K, Balog Z, Manczinger M, Bebes A, Groma G, Széll M, Kemény L, Bata-Csörgő Z. Abnormal regulation of fibronectin production by fibroblasts in psoriasis. Br J Dermatol 2016; 174:533-41. [PMID: 26471375 DOI: 10.1111/bjd.14219] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/05/2015] [Indexed: 12/13/2022]
Abstract
BACKGROUND Data indicate that in psoriasis, abnormalities are already present in nonlesional skin. Transforming growth factor-β and keratinocyte growth factor (KGF), together with fibronectin and α5β1 integrin, were suggested to play a crucial role in the pathogenesis of psoriasis by influencing inflammation and keratinocyte hyperproliferation. OBJECTIVES To investigate the expression of KGF, fibroblast growth factor receptor (FGFR)2, fibronectin (FN) and extra domain A (EDA)-positive FN in healthy and nonlesional psoriatic skin, and to study the effect of KGF on the regulation of FN and EDA(+) FN production by fibroblasts. METHODS Healthy, nonlesional psoriatic skin and lesional psoriatic skin were immunostained for α5 integrin, KGF, FGFR2, EDA(+) FN and signal transducer and activator of transcription (STAT)1. KGF-treated cell cultures were analysed for FN and EDA(+) FN mRNA and protein by real-time reverse-transcriptase polymerase chain reaction and flow cytometry, respectively. The major downstream signalling of KGF was investigated by blocking experiments using inhibitors of mitogen-activated protein kinase (MAPK) kinase (MEK1), AKT1/2, STAT1 and STAT3. RESULTS The expression of α5 integrin, EDA(+) FN, KGF and its receptor FGFR2 is elevated in psoriatic nonlesional skin compared with healthy skin. KGF mildly induced EDA(+) FN, but not FN expression in healthy fibroblasts through MAPK signalling. Fibroblasts express the FGFR2-IIIc splice variant. STAT1 negatively regulates both FN and EDA(+) FN expression in healthy fibroblasts, and this regulation is compromised in fibroblasts derived from nonlesional psoriatic dermis. We detected active STAT1 in healthy and lesional skin, similarly to a previous report. However, in the nonlesional skin STAT1 activation was absent in tissues far away from lesions. CONCLUSIONS The production of FN and EDA(+) FN by fibroblasts and the signalling of STAT1 are abnormally regulated in psoriatic nonlesional skin.
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Affiliation(s)
- B Gubán
- Department of Dermatology and Allergology, University of Szeged, Korányi fasor 6, H-6720, Szeged, Hungary
| | - K Vas
- Department of Dermatology and Allergology, University of Szeged, Korányi fasor 6, H-6720, Szeged, Hungary
| | - Z Balog
- Department of Dermatology and Allergology, University of Szeged, Korányi fasor 6, H-6720, Szeged, Hungary
| | - M Manczinger
- Department of Dermatology and Allergology, University of Szeged, Korányi fasor 6, H-6720, Szeged, Hungary
| | - A Bebes
- Department of Dermatology and Allergology, University of Szeged, Korányi fasor 6, H-6720, Szeged, Hungary
| | - G Groma
- MTA-SZTE Dermatological Research Group, University of Szeged, Korányi fasor 6, H-6720, Szeged, Hungary
| | - M Széll
- MTA-SZTE Dermatological Research Group, University of Szeged, Korányi fasor 6, H-6720, Szeged, Hungary.,Department of Medical Genetics, University of Szeged, Korányi fasor 6, H-6720, Szeged, Hungary
| | - L Kemény
- Department of Dermatology and Allergology, University of Szeged, Korányi fasor 6, H-6720, Szeged, Hungary.,MTA-SZTE Dermatological Research Group, University of Szeged, Korányi fasor 6, H-6720, Szeged, Hungary
| | - Z Bata-Csörgő
- Department of Dermatology and Allergology, University of Szeged, Korányi fasor 6, H-6720, Szeged, Hungary.,MTA-SZTE Dermatological Research Group, University of Szeged, Korányi fasor 6, H-6720, Szeged, Hungary
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18
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McFadden JP, Kimber I. A Review on the Potential Role of Basement Membrane Laminin in the Pathogenesis of Psoriasis. Scand J Immunol 2015; 83:3-9. [DOI: 10.1111/sji.12384] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2015] [Accepted: 09/02/2015] [Indexed: 01/21/2023]
Affiliation(s)
- J. P. McFadden
- Department of Cutaneous Allergy; St John's Institute of Dermatology; Kings College; Guy's Hospital; London UK
| | - I. Kimber
- Faculty of Life Sciences; University of Manchester; Manchester UK
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19
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Szlavicz E, Szabo K, Bata-Csorgo Z, Kemeny L, Szell M. What have we learned about non-involved psoriatic skin from large-scale gene expression studies? World J Dermatol 2014; 3:50-57. [DOI: 10.5314/wjd.v3.i3.50] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/29/2013] [Revised: 04/10/2014] [Accepted: 05/29/2014] [Indexed: 02/06/2023] Open
Abstract
Psoriasis is a chronic inflammatory skin disorder; its genetic background has been widely studied in recent decades. Recognition of novel factors contributing to the pathogenesis of this disorder was facilitated by potent molecular biology tools developed during the 1990s. Large-scale gene expression studies, including differential display and microarray, have been used in experimental dermatology to a great extent; moreover, skin was one of the first organs analyzed using these methods. We performed our first comprehensive gene expression analysis in 2000. With the help of differential display and microarray, we have discovered several novel factors contributing to the inherited susceptibility for psoriasis, including the EDA+ fibronectin splice variant and PRINS. The long non-coding PRINS RNA is expressed at higher levels in non-involved skin compared to healthy and involved psoriatic epidermis and might be a factor contributing cellular stress responses and, specifically, to the development of psoriatic symptoms. This review summarizes the most important results of our large-scale gene expression studies.
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20
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McFadden J. Inflammatory skin diseases and ‘danger’ signalling: time to take centre stage? Br J Dermatol 2014; 171:7-8. [DOI: 10.1111/bjd.13104] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Affiliation(s)
- J.P. McFadden
- St John's Institute of Dermatology; St Thomas' Hospital; King's College; London SE1 7EH U.K
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21
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22
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Expression and functional studies on the noncoding RNA, PRINS. Int J Mol Sci 2012; 14:205-25. [PMID: 23344029 PMCID: PMC3565259 DOI: 10.3390/ijms14010205] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2012] [Revised: 11/30/2012] [Accepted: 12/10/2012] [Indexed: 02/05/2023] Open
Abstract
PRINS, a noncoding RNA identified earlier by our research group, contributes to psoriasis susceptibility and cellular stress response. We have now studied the cellular and histological distribution of PRINS by using in situ hybridization and demonstrated variable expressions in different human tissues and a consistent staining pattern in epidermal keratinocytes and in vitro cultured keratinocytes. To identify the cellular function(s) of PRINS, we searched for a direct interacting partner(s) of this stress-induced molecule. In HaCaT and NHEK cell lysates, the protein proved to be nucleophosmin (NPM) protein as a potential physical interactor with PRINS. Immunohistochemical experiments revealed an elevated expression of NPM in the dividing cells of the basal layers of psoriatic involved skin samples as compared with healthy and psoriatic uninvolved samples. Others have previously shown that NPM is a ubiquitously expressed nucleolar phosphoprotein which shuttles to the nucleoplasm after UV-B irradiation in fibroblasts and cancer cells. We detected a similar translocation of NPM in UV-B-irradiated cultured keratinocytes. The gene-specific silencing of PRINS resulted in the retention of NPM in the nucleolus of UV-B-irradiated keratinocytes; suggesting that PRINS may play a role in the NPM-mediated cellular stress response in the skin.
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23
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Marrero B, Heller R. The use of an in vitro 3D melanoma model to predict in vivo plasmid transfection using electroporation. Biomaterials 2012; 33:3036-46. [PMID: 22244695 DOI: 10.1016/j.biomaterials.2011.12.049] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2011] [Accepted: 12/27/2011] [Indexed: 12/29/2022]
Abstract
A large-scale in vitro 3D tumor model was generated to evaluate gene delivery procedures in vivo. This 3D tumor model consists of a "tissue-like" spheroid that provides a micro-environment supportive of melanoma proliferation, allowing cells to behave similarly to cells in vivo. This functional spheroid measures approximately 1 cm in diameter and can be used to effectively evaluate plasmid transfection when testing various electroporation (EP) electrode applicators. In this study, we identified EP conditions that efficiently transfect green fluorescent protein (GFP) and interleukin 15 (IL-15) plasmids into tumor cells residing in the 3D construct. We found that plasmids delivered using a 6-plate electrode applying 6 pulses with nominal electric field strength of 500 V/cm and pulse-length of 20 ms produced significant increase of GFP (7.3-fold) and IL-15 (3.0-fold) expression compared to controls. This in vitro 3D model demonstrates the predictability of cellular response toward delivery techniques, limits the numbers of animals employed for transfection studies, and may facilitate future developments of clinical trials for cancer therapies in vivo.
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Affiliation(s)
- Bernadette Marrero
- Department of Molecular Medicine, University of South Florida, Tampa, FL 33612, USA
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24
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McFadden JP, Basketter DA, Dearman RJ, Kimber IR. Extra domain A-positive fibronectin-positive feedback loops and their association with cutaneous inflammatory disease. Clin Dermatol 2011; 29:257-65. [PMID: 21496732 DOI: 10.1016/j.clindermatol.2010.11.003] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Cutaneous inflammation can show Th1 or Th2 predominance, but the precise mechanisms by which such selectivity is determined are unknown. A recent study has demonstrated that Th1 cells, but not Th2 cells, produce an endogenous ligand for Toll-like receptor (TLR) 4, namely extradomain A+ fibronectin containing extra type III domain A (FnEDA+). As TLR4 stimulation leads to production of proinflammatory cytokines that recruit (via altered endothelial adhesion molecule expression and chemokine production) more Th1/Th17 cells, a positive feedback mechanism for Th1/Th17 inflammation exists. We propose that FnEDA+ positive feedback loops are a potential driver of Th1/Th17 inflammation. Conversely, the inflammatory EDA+ fibronectin loop is negatively regulated in atopic dermatitis, Th2 cytokines actively suppress TLR4 expression of Th1 cytokines, and recruited Th2 cells do not produce FnEDA+. In psoriasis, there are multiple FnEDA+ loops, comprising inflammatory, keratinocyte, and autoimmune loops. In allergic contact dermatitis, a single inflammatory loop operates. In atopic dermatitis, the FnEDA+ loop is actively suppressed by Th2 cytokines, and recruited Th2 cells do not "feedback" FnEDA+. We review endogenous ligands for TLR in relation to inflammatory disease, FnEDA+ function, and the potential role for FnEDA+ in psoriasis, allergic contact dermatitis, and atopic dermatitis.
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Affiliation(s)
- John P McFadden
- Department of Cutaneous Allergy, St John's Institute of Dermatology, St Thomas' Hospital, SE1 7EH London, UK.
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25
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Kormos B, Belso N, Bebes A, Szabad G, Bacsa S, Széll M, Kemény L, Bata-Csörgo Z. In vitro dedifferentiation of melanocytes from adult epidermis. PLoS One 2011; 6:e17197. [PMID: 21383848 PMCID: PMC3044174 DOI: 10.1371/journal.pone.0017197] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2010] [Accepted: 01/23/2011] [Indexed: 12/02/2022] Open
Abstract
In previous work we described a novel culture technique using a cholera toxin and PMA-free medium (Mel-mix) for obtaining pure melanocyte cultures from human adult epidermis. In Mel-mix medium the cultured melanocytes are bipolar, unpigmented and highly proliferative. Further characterization of the cultured melanocytes revealed the disappearance of c-Kit and TRP-1 and induction of nestin expression, indicating that melanocytes dedifferentiated in this in vitro culture. Cholera toxin and PMA were able to induce c-Kit and TRP-1 protein expressions in the cells, reversing dedifferentiation. TRP-1 mRNA expression was induced in dedifferentiated melanocytes by UV-B irradiated keratinocyte supernatants, however direct UV-B irradiation of the cells resulted in further decrease of TRP-1 mRNA expression. These dedifferentiated, easily accessible cultured melanocytes provide a good model for studying melanocyte differentiation and possibly transdifferentiation. Because melanocytes in Mel-mix medium can be cultured with human serum as the only supplement, this culture system is also suitable for autologous cell transplantation.
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Affiliation(s)
- Bernadett Kormos
- Dermatological Research Group of the Hungarian Academy of Sciences, Szeged, Hungary.
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DAMPening inflammation by modulating TLR signalling. Mediators Inflamm 2010; 2010. [PMID: 20706656 PMCID: PMC2913853 DOI: 10.1155/2010/672395] [Citation(s) in RCA: 660] [Impact Index Per Article: 47.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2009] [Accepted: 04/20/2010] [Indexed: 12/12/2022] Open
Abstract
Damage-associated molecular patterns (DAMPs) include endogenous intracellular molecules released by activated or necrotic cells and extracellular matrix (ECM) molecules that are upregulated upon injury or degraded following tissue damage. DAMPs are vital danger signals that alert our immune system to tissue damage upon both infectious and sterile insult. DAMP activation of Toll-like receptors (TLRs) induces inflammatory gene expression to mediate tissue repair. However, DAMPs have also been implicated in diseases where excessive inflammation plays a key role in pathogenesis, including rheumatoid arthritis (RA), cancer, and atherosclerosis. TLR activation by DAMPs may initiate positive feedback loops where increasing tissue damage perpetuates pro-inflammatory responses leading to chronic inflammation. Here we explore the current knowledge about distinct signalling cascades resulting from self TLR activation. We also discuss the involvement of endogenous TLR activators in disease and highlight how specifically targeting DAMPs may yield therapies that do not globally suppress the immune system.
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Szegedi K, Sonkoly E, Nagy N, Németh IB, Bata-Csörgo Z, Kemény L, Dobozy A, Széll M. The anti-apoptotic protein G1P3 is overexpressed in psoriasis and regulated by the non-coding RNA, PRINS. Exp Dermatol 2010; 19:269-78. [PMID: 20377629 DOI: 10.1111/j.1600-0625.2010.01066.x] [Citation(s) in RCA: 86] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Psoriasis Susceptibility-Related RNA Gene Induced by Stress (PRINS) is a non-coding RNA overexpressed in lesional and non-lesional psoriatic epidermis and induced by stress. Its function in healthy and psoriatic skin is still not known. Here, we report that PRINS regulates G1P3, a gene with anti-apoptotic effects in keratinocytes. siRNA-mediated inhibition of PRINS gene resulted in altered cell morphology and gene expression alterations, as demonstrated in a microarray experiment. One of the genes regulated by PRINS ncRNA was G1P3, an interferon-inducible gene with anti-apoptotic effects in cancer cells. Interestingly, we found that G1P3 was 400-fold upregulated in hyperproliferative lesional and ninefold upregulated in non-lesional psoriatic epidermis compared to healthy epidermis. In vitro, G1P3 protein levels were highest in proliferating keratinocytes and siRNA-mediated downregulation of G1P3 resulted in increased cell apoptosis. These data indicate that G1P3 inhibits spontaneous keratinocyte apoptosis and hence its high expression in psoriatic skin may contribute to the development of psoriatic lesions. We hypothesize that the deregulation of the PRINS ncRNA may contribute to psoriasis and results in decreased sensitivity to spontaneous keratinocyte apoptosis via the regulation of G1P3.
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Affiliation(s)
- Krisztina Szegedi
- Department of Dermatology and Allergology, University of Szeged, Szeged, Hungary.
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Räsänen K, Vaheri A. TGF-beta1 causes epithelial-mesenchymal transition in HaCaT derivatives, but induces expression of COX-2 and migration only in benign, not in malignant keratinocytes. J Dermatol Sci 2010; 58:97-104. [PMID: 20399617 DOI: 10.1016/j.jdermsci.2010.03.002] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2009] [Revised: 02/04/2010] [Accepted: 03/05/2010] [Indexed: 12/21/2022]
Abstract
BACKGROUND Transforming growth factor beta (TGF-beta) acts as a tumor promoter by inducing epithelial-mesenchymal transition (EMT), which leads to a motile phenotype, enabling invasion and metastasis of cancer cells. Cancer-related inflammation, mediated by prostaglandins, has been proposed as a critical mechanism in conversion of benign cells to malignant. OBJECTIVE Induction of cyclooxygenase 2 (COX-2), producer of prostaglandins, is thought to be a prerequisite for TGF-beta-induced EMT in benign cells. We used HaCaT derivatives, representative of skin cancer progression, to investigate TGF-beta1 mediated EMT response, and the role of COX-2 in it. METHODS Effect of TGF-beta1 was investigated by analyzing cell proliferation, morphology and protein expression. Chemotaxis and scratch-wound assays were used to study migration. RESULTS TGF-beta1 caused proliferation arrest of benign and malignant HaCaT cells, and changed the epithelial morphology of benign and low-grade malignant cells, but not metastatic cells, to mesenchymal spindle-shape. Epithelial junction proteins ZO-1 and E-cadherin were downregulated in all cell lines in response to TGF-beta1, but mesenchymal markers were not induced, suggesting a partial EMT response. COX-2 and migration were induced only in benign HaCaT derivatives. Malignant derivatives did not induce COX-2 in response to TGF-beta 1 treatment, thus emphasizing the role of inflammation in EMT response of benign cells. CONCLUSIONS TGF-beta1 operates via distinct mechanisms in inducing EMT and metastasis, and supporting this we show that TGF-beta1 induces COX-2 and promotes the migration of benign cells, but does not further augment the migration of malignant cells, indicating their resistance to TGF-beta1 in the context of motility.
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Affiliation(s)
- Kati Räsänen
- Haartman Institute, POB 21, FI-00014 University of Helsinki, Finland.
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Abstract
We have previously postulated that as well as T-helper (Th) 1 and Th17 cells, the transforming growth factor (TGF)-beta/fibronectin (FN)/alpha5beta1 pathway is central to psoriasis pathogenesis. EDA+ FN refers to an alternatively spliced isoform of FN with an additional domain known as extra domain A. EDA+ FN has two important properties pertinent to psoriasis lesions: it stimulates keratinocyte hyperproliferation, and, through stimulation of Toll-like receptor (TLR) 4, stimulates production of proinflammatory cytokines. EDA+ FN production induced by TGF-beta stimulation can be maintained in psoriasis lesions via two main feedback loops. Firstly, EDA+ FN stimulates proliferation of keratinocytes, which, in an autocrine fashion, will release more EDA+ FN. Secondly, EDA+ FN stimulates TLR4 expressed by antigen-presenting cells resulting in the production of proinflammatory cytokines such as tumour necrosis factor-alpha, interleukin (IL)-1, IL-6 and IL-12. The resultant promotion of cutaneous inflammation results in the recruitment of Th1 cells, which also produce EDA+ FN. We propose that these 'FN loops' contribute to the maintenance and progression of psoriatic lesions. Finally, although the association between psoriasis and heart/thrombotic disease remains unclear one plausible link may be the promotion of atherosclerosis and thrombotic heart disease by EDA+ FN.
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Affiliation(s)
- J P McFadden
- Department of Cutaneous Allergy, St John's Institute of Dermatology, St Thomas' Hospital, London SE1 7EH, UK.
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Széll M, Bata-Csörgo Z, Kemény L. The enigmatic world of mRNA-like ncRNAs: their role in human evolution and in human diseases. Semin Cancer Biol 2008; 18:141-8. [PMID: 18282717 DOI: 10.1016/j.semcancer.2008.01.007] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Accumulating data on non-protein-coding transcripts suggest that besides the regulatory machinery driven by proteins, another yet enigmatic regulatory network of RNA molecules operates and has considerable impact on cell functions. Moreover, deregulation of these non-coding RNAs (ncRNAs) has been documented in several human diseases suggesting that they may significantly contribute to their pathogenesis. This review summarizes our present knowledge on the role of the so-called mRNA-like ncRNAs in the complexity of multicellular organisms. We provide some examples to show how these mRNA-like non-coding RNAs have been discovered, how their cellular functions and role in the pathogenesis of human diseases have been revealed.
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Affiliation(s)
- Márta Széll
- Dermatological Research Group of the Hungarian Academy of Sciences, University of Szeged, 6720 Szeged, Korányi fasor 6, Hungary.
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31
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Belsõ N, Széll M, Pivarcsi A, Kis K, Kormos B, Kenderessy AS, Dobozy A, Kemény L, Bata-Csörgõ Z. Differential expression of D-type cyclins in HaCaT keratinocytes and in psoriasis. J Invest Dermatol 2007; 128:634-42. [PMID: 17882269 DOI: 10.1038/sj.jid.5701059] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
In this study, we show that the G0-G1/S phase of HaCaT keratinocyte cell cycle is characterized by D1-type cyclin expression, whereas during the repeated rapid turnover of highly proliferating cells, the expression of cyclins D2 and D3 dominates. Knocking down cyclin D1 mRNA resulted in no change of cell proliferation and morphology, indicating that D2 and D3 cyclins could substitute for D1 in driving the cell cycle. Increased numbers of cyclin D1-expressing keratinocytes were found in the basal layers of the lesional psoriatic epidermis compared to both normal and non-lesional epidermis without increased expression of cyclin D1 mRNA, suggesting a possible dysfunction in the degradation of cyclin D1 protein. We also detected a significant increase in cyclin D2 and D3 mRNA expressions in psoriatic epidermis compared to normal epidermis with no difference in protein expressions. Blocking alpha5-integrin function by a neutralizing antibody in HaCaT keratinocytes downregulated the expression of cyclin D1 mRNA without affecting the expressions of cyclin D2 and D3 indicating a regulatory role for alpha5-integrin in the expression of cyclin D1. Our data suggest a possible role for D-type cyclins in the excessive basal-cell proliferation and perturbed keratinocyte differentiation in the psoriatic epidermis.
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Affiliation(s)
- Nóra Belsõ
- Department of Dermatology and Allergology, Faculty of Medicine, University of Szeged, Szeged, Hungary.
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Gondokaryono SP, Ushio H, Niyonsaba F, Hara M, Takenaka H, Jayawardana STM, Ikeda S, Okumura K, Ogawa H. The extra domain A of fibronectin stimulates murine mast cells via toll-like receptor 4. J Leukoc Biol 2007; 82:657-65. [PMID: 17575266 DOI: 10.1189/jlb.1206730] [Citation(s) in RCA: 108] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Abstract
The activation of mast cells by extra domain A of fibronectin (FN-EDA), an endogenous ligand of TLR4, and its contribution to the pathogenesis of rheumatoid arthritis (RA) in vivo were examined. FN-EDA, but no other domain of the fibronectin fragment, III(11) (FN-III(11)) and III(12) (FN-III(12)), stimulated bone marrow-derived murine mast cells (BMMCs) dose-dependently to secret cytokines (TNF-alpha, IL-6, and IL-1beta), similar to the pattern produced by LPS. FN-EDA-induced cytokine production was mediated by TLR4, as cytokine production by FN-EDA was absent in TLR4-deficient (TLR4-/-) BMMCs. We examined the roles of TLR4-mediated mast cell activation by this form of fibronectin fragment in the pathogenesis of RA in vivo. The injection of FN-EDA, but not FN-III(11)and FN-III(12), to joints resulted in joint swelling of mice in vivo. Genetically mast cell-deficient WBB6F(1)-W/W(v) mice exhibited significantly less swelling and cytokine production compared with mast cell-sufficient +/+ mice, suggesting that swelling and inflammatory cytokine production were partially dependent on tissue mast cells. Reduced swelling and cytokine production were recovered by the reconstitution of tissue mast cells by the injection of BMMCs from wild-type mice but not from TLR4-/- mice. Altogether, these results suggest that the TLR4-mediated activation of mast cells by endogenous ligand FN-EDA might contribute to the pathogenesis of RA through proinflammatory cytokine production.
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Affiliation(s)
- Srie Prihianti Gondokaryono
- Atopy (Allergy) Research Center, Juntendo University School of Medicine, 2-1-1 Hongo, Bunkyo-ku, Tokyo, 113-8421, Japan
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Walsh P, Häkkinen L, Pernu H, Knuuttila M, Larjava H. Expression of fibronectin-binding integrins in gingival epithelium in drug-induced gingival overgrowth. J Periodontal Res 2007; 42:144-51. [PMID: 17305873 DOI: 10.1111/j.1600-0765.2006.00927.x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
BACKGROUND AND OBJECTIVE Gingival overgrowth is a side-effect of nifedipine and cyclosporin medications. Integrins are transmembrane glycoproteins that mediate cell adhesion, regulate cell proliferation and participate in the regulation of tissue fibrosis. The aim of this study was to investigate whether expression of epithelial cell integrins is linked to the development of drug-induced gingival overgrowth. MATERIAL AND METHODS Human gingival biopsies of patients taking nifedipine, cyclosporin, or a combination of both medications, were used. Expression of the alpha5beta1, alphavbeta1 and alphavbeta6 integrins, and of cellular extra domain A of fibronectin, was localized in frozen sections using immunohistochemistry. RESULTS The activated conformation of the beta1, alpha5beta1 and alphavbeta6 integrins were more frequently expressed in distinct locations in the oral epithelium in the combined drug group. Cellular extra domain A of fibronectin, a ligand for both alpha5beta1 and alphavbeta6 integrins, was expressed within the connective tissue of all groups. It was also expressed around the basal keratinocytes of the control, nifedipine and cyclosporin-induced gingival overgrowth groups, but not in the combined medication group. No relationship between the presence of inflammation and integrin expression was found. CONCLUSION The results indicate that expression of certain integrins is up-regulated in the epithelium of drug-induced gingival overgrowth where they could participate in controlling the formation of elongated rete ridges and tissue fibrosis.
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Affiliation(s)
- P Walsh
- Faculty of Dentistry, University of British Columbia, Vancouver, Canada
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Nagy N, Bata-Csörgo Z, Kopasz N, Szeg C, Pivarcsi A, Koreck A, Dobozy A, Kemény L, Széll M. The expression of keratinocyte growth factor receptor (FGFR2-IIIb) correlates with the high proliferative rate of HaCaT keratinocytes. Exp Dermatol 2007; 15:596-605. [PMID: 16842598 DOI: 10.1111/j.1600-0625.2006.00450.x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Keratinocyte growth factor receptor (KGFR = FGFR2-IIIb) is a tyrosine kinase receptor expressed by keratinocytes, which mediates the effects of fibroblast growth factors (FGF). There are contradictory data in the literature regarding the role of FGFR2-IIIb during the proliferation/differentiation programme of keratinocytes. In this study, we aimed to investigate whether overexpression of FGFR2-IIIb may have a role in the regulation of keratinocyte proliferation. We analysed the expression of FGFR2-IIIb in an in vitro HaCaT model system representing different stages of proliferation and differentiation of keratinocytes. Real-time RT-PCR and Western blot analyses demonstrated a correlation between FGFR2-IIIb mRNA and protein expression and the proportion of cells in S/G2/M phase in synchronized HaCaT keratinocytes and thus with proliferation activity (r = 0.96). After treatment with the antipsoriatic drug, dithranol, FGFR2-IIIb is downregulated dose dependently both at mRNA and protein levels. Moreover, when the rate of proliferation is decreased by the lack of cell attachment to the culturing surface, FGFR2-IIIb mRNA (P = 0.0315) and protein expressions were also reduced (P = 0.0242), while a differentiation marker, keratin 10, mRNA (P = 0.0003) and protein levels (P = 0.001) were increased (r = -0.92). Based on our results we conclude that FGFR2-IIIb expression in HaCaT keratinocytes corresponds with the proliferative activation of the cells and is not related to the differentiation programme.
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Affiliation(s)
- Nikoletta Nagy
- Department of Dermatology and Allergology, University of Szeged, Szeged, Hungary
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Nickoloff BJ, Bonish BK, Marble DJ, Schriedel KA, DiPietro LA, Gordon KB, Lingen MW. Lessons learned from psoriatic plaques concerning mechanisms of tissue repair, remodeling, and inflammation. J Investig Dermatol Symp Proc 2006; 11:16-29. [PMID: 17069007 DOI: 10.1038/sj.jidsymp.5650010] [Citation(s) in RCA: 56] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Following injury, skin establishes a balance between too little inflammation increasing risk of infection, and excessive inflammation contributing to delayed wound healing and scarring. Mounting evidence indicates both initiation and termination of inflammation involve active mechanisms. Not only does inflammation itself seem to be a paradox because inflammatory responses are both essential and potentially detrimental, but one chronic inflammatory skin disease (e.g. psoriasis) presents additional paradoxes. While plaques share several factors with wound healing, two understudied and puzzling aspects include why do not inflamed plaques more frequently transform?; and why do not plaques result in scarring? To get at these questions, we review responses involved in wound repair. Oral mucosa was probed because, like fetal skin, wound repair is characterized by its rapidity, low inflammation, and scarless resolution. Active roles for macrophages as both initiators and terminators of inflammation are highlighted. Therapeutic implications are discussed regarding psoriasis and pyoderma gangrenosum. Based on biochemical and immunohistochemical considerations linking psoriatic plaques to hard palate, a novel metaplastic model is presented. We hypothesize saliva and chronic trauma contribute to a constitutive epithelial program where keratinocyte proliferation is more intense prior to differentiation, accompanied by keratin 16 expression in hard palate, thereby resembling plaques. Rather than viewing psoriasis as a nonspecific response to inflammation, we postulate a metaplastic switch by which prepsoriatic skin is converted to a distinct adult tissue type resembling hard palate. In summary, many lessons can be learned by focusing on complex processes involved in regulation of inflammation, tissue repair, and remodeling.
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Affiliation(s)
- Brian J Nickoloff
- Department of Pathology, Cardinal Bernardin Cancer Center, Loyola University Medical Center, Maywood, Illinois 60153, USA.
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Stojadinovic O, Lee B, Vouthounis C, Vukelic S, Pastar I, Blumenberg M, Brem H, Tomic-Canic M. Novel genomic effects of glucocorticoids in epidermal keratinocytes: inhibition of apoptosis, interferon-gamma pathway, and wound healing along with promotion of terminal differentiation. J Biol Chem 2006; 282:4021-34. [PMID: 17095510 DOI: 10.1074/jbc.m606262200] [Citation(s) in RCA: 140] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Glucocorticoids (GCs) have a long history of use as therapeutic agents for numerous skin diseases. Surprisingly, their specific molecular effects are largely unknown. To characterize GC action in epidermis, we compared the transcriptional profiles of primary human keratinocytes untreated and treated with dexamethasone (DEX) for 1, 4, 24, 48, and 72 h using large scale microarray analyses. The majority of genes were found to be regulated only after 24 h and remained regulated throughout treatment. In addition to regulation of the expected pro-inflammatory genes, we found that GCs regulate cell fate, tissue remodeling, cell motility, differentiation, and metabolism. GCs suppress the expression of essentially all IFNgamma-regulated genes, including IFNgamma receptor and STAT-1, an effect that was previously unknown. GCs also block STAT-1 activation and nuclear translocation. Unexpectedly, GCs induce the expression of anti-apoptotic genes and repress pro-apoptotic ones, preventing UV-induced keratinocyte apoptosis. Consequently, treatment with GCs blocked UV-induced apoptosis of keratinocytes. GCs have profound effect on wound healing by inhibiting cell motility and the expression of the proangiogenic factor, vascular endothelial growth factor. They play an important role in tissue remodeling and scar formation by suppressing the expression of TGFbeta1 and -2 and MMP1, -2, -9, and -10 and inducing TIMP-2. Finally, GCs promote terminal epidermal differentiation while simultaneously inhibiting early stage differentiation. These results provide new insights into the beneficial and adverse effects of GCs in the epidermis, defining the participating genes and mechanisms that coordinate the cellular responses important for GC-based therapies.
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Affiliation(s)
- Olivera Stojadinovic
- Hospital for Special Surgery, Tissue Repair Laboratory, Tissue Engineering, Regeneration and Repair Program, New York, New York 10021, USA
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Kagen MH, McCormick TS, Cooper KD. Regulatory T cells in psoriasis. ERNST SCHERING RESEARCH FOUNDATION WORKSHOP 2006:193-209. [PMID: 16329653 DOI: 10.1007/3-540-37673-9_12] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Psoriasis is a chronic autoimmune disease in which T lymphocytes are thought to be central in the pathogenesis. Recently, a T cell subset population was identified, whose role is to suppress inflammatory responses triggered by T effector cells. T cells in this new population are referred to as T regulatory cells. We studied their number and activity in psoriatic lesions and found that they are both numerically and functionally deficient in their ability to suppress the abnormally persistent psoriatic immune response. This deficiency may shed more light on the complex pathophysiology of psoriasis.
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Wandall HH, Dabelsteen S, Sørensen JA, Krogdahl A, Mandel U, Dabelsteen E. Molecular basis for the presence of glycosylated onco-foetal fibronectin in oral carcinomas: the production of glycosylated onco-foetal fibronectin by carcinoma cells. Oral Oncol 2006; 43:301-9. [PMID: 16857413 DOI: 10.1016/j.oraloncology.2006.03.005] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2006] [Revised: 03/07/2006] [Accepted: 03/08/2006] [Indexed: 12/29/2022]
Abstract
Glycosylated onco-foetal fibronectin (GOF) deposited in the stroma of oral squamous cell carcinomas correlates with survival. One of the two polypeptide GalNAc-transferases, GalNAc-T3 or GalNAc-T6, is required for the biosynthesis of GOF by the initiation of a unique O-glycan in the alternative spliced IIICS region. Using cell culture experiments, immunohistochemical staining of primary tissue, and RT-PCR of tumour cells isolated by laser capture techniques we have examined the molecular basis for the production of GOF in oral carcinomas. Immuno-histochemical investigation confirmed the stromal deposition of GOF in oral carcinomas. However, neither GalNAc-T3 nor GalNAc-T6 could be detected in stromal fibroblasts. In contrast both transferases were present in the oral squamous carcinoma cells, suggesting that GOF is produced by the oral cancer cells and not only the stromal cells. RT-PCR analysis of RNA isolated from carcinoma cells provided further support for this conclusion by demonstrating in-splicing of the alternative spliced IIICS domain in GOF.
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Affiliation(s)
- Hans H Wandall
- Department of Oral Diagnostics, The Faculty of Health Sciences, University of Copenhagen, Nørre Alle 20, DK-2200 Copenhagen N, Denmark
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Sonkoly E, Bata-Csorgo Z, Pivarcsi A, Polyanka H, Kenderessy-Szabo A, Molnar G, Szentpali K, Bari L, Megyeri K, Mandi Y, Dobozy A, Kemeny L, Szell M. Identification and characterization of a novel, psoriasis susceptibility-related noncoding RNA gene, PRINS. J Biol Chem 2005; 280:24159-67. [PMID: 15855153 DOI: 10.1074/jbc.m501704200] [Citation(s) in RCA: 159] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
To identify genetic factors contributing to psoriasis susceptibility, gene expression profiles of uninvolved epidermis from psoriatic patients and epidermis from healthy individuals were compared. Besides already characterized genes, we identified a cDNA with yet unknown functions, which we further characterized and named PRINS (Psoriasis susceptibility-related RNA Gene Induced by Stress). In silico structural and homology studies suggested that PRINS may function as a noncoding RNA. PRINS harbors two Alu elements, it is transcribed by RNA polymerase II, and it is expressed at different levels in various human tissues. Real time reverse transcription-PCR analysis showed that PRINS was expressed higher in the uninvolved epidermis of psoriatic patients compared with both psoriatic lesional and healthy epidermis, suggesting a role for PRINS in psoriasis susceptibility. PRINS is regulated by the proliferation and differentiation state of keratinocytes. Treatment with T-lymphokines, known to precipitate psoriatic symptoms, decreased PRINS expression in the uninvolved psoriatic but not in healthy epidermis. Real time reverse transcription-PCR analysis showed that stress signals such as ultraviolet-B irradiation, viral infection (herpes simplex virus), and translational inhibition increased the RNA level of PRINS. Gene-specific silencing of PRINS by RNA interference revealed that down-regulation of PRINS impairs cell viability after serum starvation but not under normal serum conditions. Our findings suggest that PRINS functions as a noncoding regulatory RNA, playing a protective role in cells exposed to stress. Furthermore, elevated PRINS expression in the epidermis may contribute to psoriasis susceptibility.
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Affiliation(s)
- Eniko Sonkoly
- Department of Dermatology and Allergology, University of Szeged, Szeged 6720, Hungary
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