Similar Datasets
Project description:Herein we demonstrate the efficacy of an unbiased proteomics screening approach for studying protein expression changes in the KC-Tie2 psoriasis mouse model, identifying multiple protein expression changes in the mouse and validating these changes in human psoriasis. KC-Tie2 mouse skin samples (n=3) were compared with littermate controls (n=3) using gel-based fractionation followed by label-free protein expression analysis. 5482 peptides mapping to 1281 proteins were identified and quantitated: 105 proteins exhibited fold-changes ≥2.0 including: stefin A1 (average fold change of 342.4 and an average P = 0.0082; cystatin A, human orthologue); slc25a5 (average fold change of 46.2 and an average P = 0.0318); serpinb3b (average fold change of 35.6 and an average P = 0.0345; serpinB1, human orthologue); and kallikrein related peptidase 6 (average fold change of 4.7 and an average P = 0.2474; KLK6). We independently confirmed mouse gene expression-based increases of selected genes including serpinb3b (17.4-fold, P < 0.0001), KLK6 (9.0-fold, P = 0.002), stefin A1 (7.3-fold; P < 0.001) and slc25A5 (1.5-fold; P = 0.05) using qRT-PCR on a second cohort of animals (n=8). Parallel LC/MS/MS analyses on these same samples verified protein-level increases of 1.3-fold (slc25a5; P < 0.05), 29,000-fold (stefinA1; P < 0.01), 322-fold (KLK6; P < 0.0001) between KC-Tie2 and control mice. To underscore the utility and translatability of our combined approach, we analyzed gene and protein expression levels in psoriasis patient skin and primary keratinocytes vs. healthy controls. Increases in gene expression for slc25a5 (1.8-fold), cystatin A (3.0-fold), KLK6 (5.8-fold) and serpinB1 (76-fold; all P < 0.05) were observed between healthy controls and involved lesional psoriasis skin and primary psoriasis keratinocytes. Moreover slc25a5, cystatin A, KLK6 and serpinB1 protein were all increased in lesional psoriasis skin compared to normal skin. These results highlight the usefulness of preclinical disease models using readily-available mouse skin and demonstrate the utility of proteomic approaches for identifying novel peptides/proteins that are differentially regulated in psoriasis that could serve as sources of auto-antigens or provide novel therapeutic targets for the development of new anti-psoriatic treatments.
2014-10-30 | PXD001387 | Pride
Project description:Gene expression profiling in psoriatic lesional and non-lesional skin [Set 1]
2025-01-24 | E-GEOD-34248 | ExpressionAtlas
Project description:Gene expression profiling in psoriatic lesional and non-lesional skin [brodalumab treatment]
2025-01-24 | E-GEOD-53552 | ExpressionAtlas
Project description:Gene expression profiling in psoriatic lesional and non-lesional skin [Set 2]
2025-01-24 | E-GEOD-41662 | ExpressionAtlas
Project description:In this study, we sought to establish the usefulness of LCM on cDNA microarray analysis. We reported that LCM samples improved the sensitivity of detection of differentially expressed genes over conventional bulk tissue analysis. We also provided the new information of chemokine and its receptor interaction within psoriatic lesional skin. For the comparison of gene expression patterns between single and double amplification techniques, total RNA was extracted from blocks of paired lesional and non-lesional psoriatic skin biopsies from four patients. For LCM experiment, total RNA was extracted from sliced tissue sections of paired lesional and non-lesional psoriatic skin biopsies from three patients.
2012-01-30 | E-GEOD-26866 | biostudies-arrayexpress
Project description:Background: Plaque psoriasis is a chronic autoimmune disorder characterized by the development of red scaly plaques. To date psoriasis lesional skin transcriptome has been extensively studied, whereas only few proteomic studies of psoriatic skin are available. Aim: The aim of this study was to compare protein expression patterns of lesional and normally looking skin of psoriasis patients with skin of the healthy volunteers, reveal differentially expressed proteins and identify changes in cell metabolism caused by the disease. Methods: Skin samples of normally looking and lesional skin donated by psoriasis patients (n = 5) and samples of healthy skin donated by volunteers (n = 5) were analyzed by liquid chromatography-tandem mass spectrometry (LC-MS/MS). After protein identification and data processing, the set of differentially expressed proteins was subjected to protein ontology analysis to characterize changes in biological processes, cell components and molecular functions in the patients' skin compared to skin of the healthy volunteers. Results: The performed analysis identified 405 and 59 differentially expressed proteins in lesional and normally looking psoriatic skin compared to healthy control. We discovered decreased expression of KNG1, APOE, HRG, THBS1 and PLG in normally looking skin of the patients. Presumably, these changes were needed to protect the epidermis from spontaneous activation of kallikrein-kinin system and delay the following development of inflammatory response. In lesional skin, we identified several large groups of proteins with coordinated expression. Mainly, these proteins were involved in different aspects of protein and RNA metabolism, namely ATP synthesis and consumption; intracellular trafficking of membrane-bound vesicles, pre-RNA processing, translation, chaperoning and degradation in proteasomes/immunoproteasomes. Conclusion: Our findings explain the molecular basis of metabolic changes caused by disease in skin lesions, such as faster cell turnover and higher metabolic rate. They also indicate on downregulation of kallikrein-kinin system in normally looking skin of the patients that would be needed to delay exacerbation of the disease.
2021-05-06 | PXD021673 | Pride
Project description:A single intradermal injection of IFN-gamma induces a psoriasis-like state in both non-lesional psoriatic and healthy skin
2025-01-24 | E-GEOD-32407 | ExpressionAtlas
Project description:Background: In present study we performed whole transcriptome analysis in plaque psoriasis patients and compared lesional skin with non-lesional skin and with the skin from healthy controls. We sequenced total RNA from 12 lesional (LP), 12 non-lesional (NLP) and from 12 normal (C) skin biopsies. Results: Compared with previous gene expression profiling studies we had three groups under analysis - LP, NLP and C. Using NLP samples allows to see the transcriptome of visually normal skin from psoriasis patient. In LP skin S100A12, S100A7A, LCE3E, DEFB4A, IL19 were found up regulated. In addition to already well-described genes, we also found several other, not so widely recognized transcripts, related to psoriasis. Namely, KLK9, OAS2, OAS3, PLA2G, IL36G, IL36RN were found to be significantly and consistently related to the psoriatic lesions. Ingenuity pathway analysis was used to define functional networks significantly enriched in the studied samples. The genes up-regulated in the LP samples were related to the innate immunity, IL17 and IL10 networks. In NLP samples innate immunity and IL17 network were activated, but activation of IL10 network was not evident. The transcriptional changes characteristic in the NLP samples can be considered as a molecular signature of “dormant psoriasis”. Conclusions: Taken together, our study described the transcriptome profile characteristic for LP and NLP psoriatic skin. RNA profile of the NLP skin is in between the lesional and healthy skin, with its own specific pattern. We found that both LP and NLP have up-regulated IL17 network, whereas LP skin has up regulated IL10 related cytokines (IL19, IL20, IL24). Moreover, IL36G and IL36RN were identified as strong regulators of skin pathology in both LP and NLP skin samples, with stronger influence in LP samples. 36 samples, 24 from psoriasis and 12 from controls
2015-04-24 | E-GEOD-66511 | biostudies-arrayexpress
Project description:Applying ChIP-seq with anti-acetylation of lysine 27 on Histone 3 (H3K27Ac), we report high-throughput profiling of H3K27Ac in human skin biopsies taken from psoriasis patients, both from the lesion and from adjacent non-lesion skin, and from skin biopsies from healthy match volunteers, in term of age, gender, and the biopsies place in the body. From each group we had 4 samples. There is a clearly different H3K27 acetylation patterns in psoriatic skin compared to uninvolved or healthy volunteer skin. in many of the most over express genes in psoriasis lesion, there is enrichment of H3K27Ac. However, loss of acetylation on H3K27 is not part of the biochemical mechanism by which gene expression is decreased in psoriatic skin. Finally, we show Many of the over express genes in psoriasis lesion, that also were enriched with H3K27Ac harbor a putative GRHL transcription factor binding site.
2023-07-17 | GSE161076 | GEO
Project description:Applying ChIP-seq with anti-acetylation of lysine 27 on Histone 3 (H3K27Ac), we report high-throughput profiling of H3K27Ac in human skin biopsies taken from psoriasis patients, both from the lesion and from adjacent non-lesion skin, and from skin biopsies from healthy match volunteers, in term of age, gender, and the biopsies place in the body. From each group we had 4 samples. On three samples of each group we performed mRNA array. There is a clearly different H3K27 acetylation patterns in psoriatic skin compared to uninvolved or healthy volunteer skin. in many of the most over express genes in psoriasis lesion, there is enrichment of H3K27Ac. However, loss of acetylation on H3K27 is not part of the biochemical mechanism by which gene expression is decreased in psoriatic skin. Finally, we show Many of the over express genes in psoriasis lesion, that also were enriched with H3K27Ac harbor a putative GRHL transcription factor binding site.
2021-01-01 | GSE160932 | GEO