Ets1 suppresses atopic dermatitis by suppressing pathogenic T cell responses
Ontology highlight
ABSTRACT:
ORGANISM(S): Mus musculus
PROVIDER: GSE122795 | GEO | 2019/05/09
REPOSITORIES: GEO
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Project description:Ets1 suppresses atopic dermatitis by suppressing pathogenic T cell responses
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Project description:Atopic dermatitis (AD) is the most prevalent chronic inflammatory skin disease in children characterized by dermatitis and pruritus. MicroRNAs (miRNAs) have been shown as great potential biomarkers for disease fingerprints to predict prognostics. We aimed to identify miRNA signature from serum and urine for the prognosis of AD patient by genome-wide miRNA profiling analysis. Serum from 8 children with AD and 8 healthy children were collected
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Project description:Psoriasis and atopic dermatitis (AD) are characterized by polarized CD4+ T cell responses. During the polarization of naM-CM-/ve CD4+ T cells, DNA methylation plays an important role in the regulation of gene transcription. In this study, we profiled the genome-wide DNA methylation status of naM-CM-/ve CD4+ T cells in patients with psoriasis or AD and healthy controls using a ChIP-seq method. As a result, twenty-six regions in the genome ranging in size from 10 to 70 kb were markedly hypomethylated in patients with psoriasis. These regions were mostly pericentromeric on 10 different chromosomes and overlapped with various strong epigenomic signals, such as histone modifications and transcription factor binding sites, that were observed in the ENCODE project. Gene-centric analysis indicated that the promoter regions of 124 genes on the X chromosome had dramatically elevated methylation levels in patients with psoriasis as compared to those from healthy controls (> 4-fold). Moreover, immune-related genes on the X chromosome had higher hypermethylation than other genes (P < 0.05). These findings imply that methylation changes in naM-CM-/ve CD4+ T cells may affect CD4+ T cell polarization, especially in the pathogenesis of psoriasis. Keywords: Psoriasis, Atopic dermatitis, DNA methylation, naM-CM-/ve CD4+ T cells Sample submission examines DNA methylation from human naive CD4+ T cells in patients with psoriasis and atopic dermatitis. Note: Raw data available only for Sample GSM871288.
2012-03-17 | E-GEOD-35582 | biostudies-arrayexpress
Project description:Canine atopic dermatitis (AD) is clinically similar to human AD, implicating it as a useful model of human eosinophilic allergic disease. To identify cutaneous gene transcription changes in relatively early inflammation of canine AD, microarrays were used to monitor transcription in normal skin (n=13) and in acute lesional AD (ALAD) and nearby visibly nonlesional AD (NLAD) skin (n=13) from dogs. Scanning the putative abnormally-transcribed genes, several potentially relevant genes, some abnormally transcribed in both NLAD and ALAD (e.g. IL6, NFAM1, MSRA, and SYK), were observed. Comparison for abnormally-transcribed genes common to two related human diseases, human AD and asthmatic chronic rhinosinusitis with nasal polyps (aCRSwNP), further identified genes or gene sets likely relevant to eosinophilic allergic inflammation. These included 1) genes associated with alternatively-activated monocyte-derived cells, including members of the monocyte chemotactic protein (MCP) gene cluster, 2) members of the IL1 family gene cluster, 3) eosinophil-associated seven transmembrane receptor EMR1 and EMR3 genes, 4) interferon-inducible genes, and 5) keratin genes associated with hair and nail formation. Overall, numerous abnormally-transcribed genes were observed only in canine AD; however, many others are common to related human eosinophilic allergic diseases and represent therapeutic targets testable in dogs with AD. Total RNA from skin biopsy specimens from 13 Healthy (i.e. Normal) dogs were compared to total RNA from acute lesional skin biopsy specimens (i.e. ALAD) and nearby visibly nonlesional skin biopsy specimens (i.e. NLAD) from 13 dogs with atopic dermatitis.
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Project description:We analyzed m6A modifications in skin lesions of patients with psoriasis or atopic dermatitis (AD). The results of this study will help to gain insight into the molecular basis of m6A modification in inflammatory skin diseases such as psoriasis or atopic dermatitis.
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Project description:Atopic dermatitis (AD) is the most prevalent chronic inflammatory skin disease in children characterized by dermatitis and pruritus. MicroRNAs (miRNAs) have been shown as great potential biomarkers for disease fingerprints to predict prognostics. We aimed to identify miRNA signature from serum and urine for the prognosis of AD patient by genome-wide miRNA profiling analysis.
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Project description:Atopic dermatitis (AD) is the most prevalent chronic inflammatory skin disease in children characterized by dermatitis and pruritus. MicroRNAs (miRNAs) have been shown as great potential biomarkers for disease fingerprints to predict prognostics. We aimed to identify miRNA signature from serum and urine for the prognosis of AD patient by genome-wide miRNA profiling analysis.
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Project description:Atopic Dermatitis (AD) is the most common inflammatory skin disease and characterized by a deficient epidermal barrier and cutaneous inflammation. Genetic studies suggest a key role of keratinocytes in AD pathogenesis, but the alterations in the proteome that occur in the entire epidermis have not been defined. Employing a pressure-cycling technology-data-independent acquisition (PCT-DIA) approach, we performed quantitative proteomics of epidermis from healthy volunteers and lesional and non-lesional skin of AD patients. Results were validated by targeted proteomics using parallel reaction monitoring mass spectrometry or by immunofluorescence staining. The identified proteins reflect the strong inflammation in lesional skin and the defect in keratinocyte differentiation and epidermal stratification. Most importantly, they reveal impaired activation of the NRF2-antioxidant pathway and reduced abundance of mitochondrial proteins involved in key metabolic pathways in the epidermis. These results provide insight into the molecular alterations in the epidermis of AD patients and identify novel targets for pharmaceutical intervention.
2022-10-04 | PXD025431 | Pride
Project description:In this study we used genomic profiling to characterize differences in expression of genes related to epidermal growth/differentiation and inflammatory circuits in skin lesions of psoriasis and atopic dermatitis (AD), comparing expression values to normal skin. Skin biopsies were collected from 9 patients with chronic atopic dermatitis, 15 psoriasis patients, and 9 healthy volunteers. Keywords: Genetic-pathology Psoriasis and AD are common inflammatory skin diseases which share important features, including: 1) large infiltrates of T-cells and inflammatory dendritic cells in skin lesions, 2) immune activation with up-regulated expression of many cytokines, chemokines, and inflammatory molecules 3) marked epidermal hyperplasia in chronic diseased skin and 4) defective barrier function with increased transepidermal water loss (TEWL), which reflects underlying alterations in keratinocyte differentiation. Using genomic profiling we provide a comprehensive comparison of chronic psoriasis and AD skin lesions as compared with normal skin.
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