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Molecular Research on Inflammatory Skin Diseases
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Molecular Research on Inflammatory Skin Diseases

A special issue of International Journal of Molecular Sciences (ISSN 1422-0067). This special issue belongs to the section "Molecular Pathology, Diagnostics, and Therapeutics".

Deadline for manuscript submissions: closed (28 February 2022) | Viewed by 21615

Special Issue Editor

Prof. Dr. Thomas Litman

E-Mail Website
Guest Editor
Department of Immunology and Microbiology, University of Copenhagen, 2200 Copenhagen, Denmark
Interests: bioinformatics; multi-omics; transcriptomics;translational research; biomarkers; multidrug resistance; inflammatory skin diseases
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Molecular research on inflammatory skin diseases has progressed exponentially during the last decade with the availability and evolution of high-throughput technologies, such as next-generation sequencing, proteomics, and bioinformatics tools aiding the analysis and integration of large data sets.

The aim of this Special Issue is to review and discuss the latest knowledge and developments in molecular analysis and our understanding of inflammatory skin diseases. Specifically, the latest development in the following topics will be reviewed (see subtopics):

Subtopics: transcriptomics, microarrays, RNA-seq, single-cell RNA-seq, proteomics, genomics, metabolomics (lipidomics), epigenomics, microbiome analysis, multi-omics, integrative analysis, pathway analysis, network analysis, systems biology, biomarkers (diagnostic, predictive, prognostic, target engagement), molecular pathology, classifiers, personalized medicine/targeted therapy (monoclonal antibodies, bispecific antibodies, small molecules), translational models (from mouse to human)

Prof. Thomas Litman
Guest Editor

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Keywords

  • inflammatory skin diseases
  • transcriptomics
  • multi-omics
  • psoriasis
  • atopic dermatitis
  • eczema
  • acne
  • alopecia areata
  • vitiligo

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Published Papers (5 papers)

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Research

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12 pages, 3426 KiB  
Article
Profiling the Atopic Dermatitis Epidermal Transcriptome by Tape Stripping and BRB-seq
by Tu Hu, Tanja Todberg, Daniel Andersen, Niels Banhos Danneskiold-Samsøe, Sofie Boesgaard Neestrup Hansen, Karsten Kristiansen, David Adrian Ewald, Susanne Brix, Joel Correa da Rosa, Ilka Hoof, Lone Skov and Thomas Litman
Int. J. Mol. Sci. 2022, 23(11), 6140; https://doi.org/10.3390/ijms23116140 - 30 May 2022
Cited by 2 | Viewed by 3596
Abstract
Tape stripping is a non-invasive skin sampling technique, which has recently gained use for the study of the transcriptome of atopic dermatitis (AD), a common inflammatory skin disorder characterized by a defective epidermal barrier and perturbated immune response. Here, we performed BRB-seq—a low [...] Read more.
Tape stripping is a non-invasive skin sampling technique, which has recently gained use for the study of the transcriptome of atopic dermatitis (AD), a common inflammatory skin disorder characterized by a defective epidermal barrier and perturbated immune response. Here, we performed BRB-seq—a low cost, multiplex-based, transcriptomic profiling technique—on tape-stripped skin from 30 AD patients and 30 healthy controls to evaluate the methods’ ability to assess the epidermal AD transcriptome. An AD signature consisting of 91 differentially expressed genes, specific for skin barrier and inflammatory response, was identified. The gene expression in the outermost layers, stratum corneum and stratum granulosum, of the skin showed highest correlation between tape-stripped skin and matched full-thickness punch biopsies. However, we observed that low and highly variable transcript counts, probably due to low RNA yield and RNA degradation in the tape-stripped skin samples, were a limiting factor for epidermal transcriptome profiling as compared to punch biopsies. We conclude that deep BRB-seq of tape-stripped skin is needed to counteract large between-sample RNA yield variation and highly zero-inflated data in order to apply this protocol for population-wide screening of the epidermal transcriptome in inflammatory skin diseases. Full article
(This article belongs to the Special Issue Molecular Research on Inflammatory Skin Diseases)
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15 pages, 2796 KiB  
Article
Neutrophil Pathways of Inflammation Characterize the Blood Transcriptomic Signature of Patients with Psoriasis and Cardiovascular Disease
by Amanda Kvist-Hansen, Hannah Kaiser, Xing Wang, Martin Krakauer, Peter Michael Gørtz, Benjamin D. McCauley, Claus Zachariae, Christine Becker, Peter Riis Hansen and Lone Skov
Int. J. Mol. Sci. 2021, 22(19), 10818; https://doi.org/10.3390/ijms221910818 - 6 Oct 2021
Cited by 20 | Viewed by 3163
Abstract
Background: Patients with psoriasis have an increased risk of atherosclerotic cardiovascular disease (CVD). The molecular mechanisms behind this connection are not fully understood, but the involvement of neutrophils have drawn attention as a shared inflammatory factor. Methods: RNA sequencing using the Illumina platform [...] Read more.
Background: Patients with psoriasis have an increased risk of atherosclerotic cardiovascular disease (CVD). The molecular mechanisms behind this connection are not fully understood, but the involvement of neutrophils have drawn attention as a shared inflammatory factor. Methods: RNA sequencing using the Illumina platform was performed on blood from 38 patients with moderate to severe psoriasis; approximately half had prior CVD. The neutrophil to lymphocyte ratio (NLR) was obtained from blood samples. Subclinical atherosclerosis was assessed by 18F-fluorodeoxyglucose positron emission tomography/computed tomography and ultrasound imaging. Transcriptomic analysis for differential expression and functional enrichment were performed, followed by correlation analyses of differentially expressed genes (DEGs), NLR and subclinical measurers of CVD. Results: 291 genes were differentially expressed between patients with psoriasis with and without CVD. These included 208 upregulated and 83 downregulated DEGs. Neutrophil degranulation was identified as the most significant process related to the upregulated DEGs. Genes for the neutrophil-associated markers MPO, MMP9, LCN2, CEACAM1, CEACAM6 and CEACAM8 were identified as being of special interest and their mRNA levels correlated with NLR, high-sensitive C-reactive protein and markers of subclinical CVD. Conclusions: Patients with psoriasis and CVD had an increased expression of genes related to neutrophil degranulation in their blood transcriptome compared with patients with psoriasis without CVD. NLR may be a potential biomarker of subclinical CVD in psoriasis. Full article
(This article belongs to the Special Issue Molecular Research on Inflammatory Skin Diseases)
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8 pages, 2601 KiB  
Article
MCPIP1/Regnase-1 Expression in Keratinocytes of Patients with Hidradenitis Suppurativa: Preliminary Results
by Piotr K. Krajewski, Weronika Szukała, Agata Lichawska-Cieślar, Łukasz Matusiak, Jolanta Jura and Jacek C. Szepietowski
Int. J. Mol. Sci. 2021, 22(14), 7241; https://doi.org/10.3390/ijms22147241 - 6 Jul 2021
Cited by 4 | Viewed by 2571
Abstract
The pathogenesis of hidradenitis suppurativa (HS) is yet to be fully understood. However, inflammation is a key element in the development of skin lesions. The aim of this study was to evaluate the expression of monocyte chemotactic protein-1-induced protein-1 (MCPIP1) in the skin [...] Read more.
The pathogenesis of hidradenitis suppurativa (HS) is yet to be fully understood. However, inflammation is a key element in the development of skin lesions. The aim of this study was to evaluate the expression of monocyte chemotactic protein-1-induced protein-1 (MCPIP1) in the skin of patients suffering from HS. Skin biopsies of 15 patients with HS and 15 healthy controls were obtained and processed for immunohistochemistry, western blot, and real time PCR. The highest mean MCPIP1 mRNA expression was found in the inflammatory lesional skin of HS patients. It was significantly higher than MCPIP1 mRNA expression in the biopsies from both healthy controls and non-lesional skin of HS patients. Western blot analysis indicated that expression of MCPIP1 was elevated within both lesional and non-lesional skin compared to the healthy control. The increased MCPIP1 mRNA and protein expression level in HS lesions may indicate its possible role in the disease pathogenesis. Full article
(This article belongs to the Special Issue Molecular Research on Inflammatory Skin Diseases)
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Review

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23 pages, 2283 KiB  
Review
Chronic Inflammation as the Underlying Mechanism of the Development of Lung Diseases in Psoriasis: A Systematic Review
by Mateusz Mleczko, Agnieszka Gerkowicz and Dorota Krasowska
Int. J. Mol. Sci. 2022, 23(3), 1767; https://doi.org/10.3390/ijms23031767 - 4 Feb 2022
Cited by 10 | Viewed by 5995
Abstract
Psoriasis is a systemic inflammatory disease caused by dysfunctional interactions between the innate and adaptive immune responses. The systemic inflammation in psoriasis may be associated with the development of comorbidities, including lung diseases. In this review, we aimed to provide a summary of [...] Read more.
Psoriasis is a systemic inflammatory disease caused by dysfunctional interactions between the innate and adaptive immune responses. The systemic inflammation in psoriasis may be associated with the development of comorbidities, including lung diseases. In this review, we aimed to provide a summary of the evidence regarding the prevalence of lung diseases in patients with psoriasis and the potential underlying mechanisms. Twenty-three articles published between March 2010 and June 2021 were selected from 195 initially identified records. The findings are discussed in terms of the prevalence of asthma, chronic obstructive pulmonary disease, interstitial lung disease, obstructive sleep apnea, pulmonary hypertension, and sarcoidosis in psoriasis. A higher prevalence of lung diseases in psoriasis has been confirmed in asthma, chronic obstructive pulmonary disease, obstructive sleep apnea, and pulmonary hypertension. These conditions are important as they are previously unrecognized causes of morbidity and mortality in psoriasis. The development of lung diseases in patients with psoriasis can be explained by several mechanisms, including common risk factors, shared immune and molecular characteristics associated with chronic inflammation, as well as other mechanisms. Understanding the prevalence of lung diseases in psoriasis and their underlying mechanisms can help implement appropriate preventative and therapeutic strategies to address respiratory diseases in patients with psoriasis. Full article
(This article belongs to the Special Issue Molecular Research on Inflammatory Skin Diseases)
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16 pages, 1323 KiB  
Review
Tissue-Resident Memory T Cells in Skin Diseases: A Systematic Review
by Thomas Emmanuel, Josephine Mistegård, Anne Bregnhøj, Claus Johansen and Lars Iversen
Int. J. Mol. Sci. 2021, 22(16), 9004; https://doi.org/10.3390/ijms22169004 - 20 Aug 2021
Cited by 11 | Viewed by 5252
Abstract
In health, the non-recirculating nature and long-term persistence of tissue-resident memory T cells (TRMs) in tissues protects against invading pathogens. In disease, pathogenic TRMs contribute to the recurring traits of many skin diseases. We aimed to conduct a systematic literature review on the [...] Read more.
In health, the non-recirculating nature and long-term persistence of tissue-resident memory T cells (TRMs) in tissues protects against invading pathogens. In disease, pathogenic TRMs contribute to the recurring traits of many skin diseases. We aimed to conduct a systematic literature review on the current understanding of the role of TRMs in skin diseases and identify gaps as well as future research paths. EMBASE, PubMed, SCOPUS, Web of Science, Clinicaltrials.gov and WHO Trials Registry were searched systematically for relevant studies from their inception to October 2020. Included studies were reviewed independently by two authors. This study was conducted in accordance with the PRISMA-S guidelines. This protocol was registered with the PROSPERO database (ref: CRD42020206416). We identified 96 studies meeting the inclusion criteria. TRMs have mostly been investigated in murine skin and in relation to infectious skin diseases. Pathogenic TRMs have been characterized in various skin diseases including psoriasis, vitiligo and cutaneous T-cell lymphoma. Studies are needed to discover biomarkers that may delineate TRMs poised for pathogenic activity in skin diseases and establish to which extent TRMs are contingent on the local skin microenvironment. Additionally, future studies may investigate the effects of current treatments on the persistence of pathogenic TRMs in human skin. Full article
(This article belongs to the Special Issue Molecular Research on Inflammatory Skin Diseases)
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