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Whole blood RNAseq from Generalised Pustular Psoriasis patients and healthy individuals

ABSTRACT: Whole blood RNAseq from Generalised Pustular Psoriasis patients and healthy individuals

PROVIDER: PRJNA509869 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR8315460_1.fastq.gz	Fastqsanger.gz
	SRR8315460_2.fastq.gz	Fastqsanger.gz
	SRR8315470_1.fastq.gz	Fastqsanger.gz
	SRR8315470_2.fastq.gz	Fastqsanger.gz
	SRR8315461_1.fastq.gz	Fastqsanger.gz

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Neutrophils RNAseq from Generalised Pustular Psoriasis patients and healthy individuals

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Neutrophil and whole blood RNAseq from Generalised Pustular Psoriasis patients and healthy individuals

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Comparison of healthy, plaque psoriasis and pustular psoriasis FFPE skin biopsies

Project description:Generalized pustular psoriasis (GPP) is a rare, debilitating, and often life-threatening inflammatory disease characterized by episodic infiltration of neutrophils into the skin, pustule development, and systemic inflammation, which can manifest in the presence or absence of chronic plaque psoriasis (PV). Current treatments are unsatisfactory thus a better understanding the pathogenesis of GPP is warranted. To assess the pathophysiological differences between GPP and PV we performed a gene expression study on formalin-fixed paraffin-embedded biopsies of GPP (n=30) and PV (n=12) lesions and healthy control (n=20) skin. Compared with healthy skin, GPP lesions yielded 365 and PV 898 differentially expressed genes respectively, with 190 upregulated in both diseases. We detected higher expression of IL-1 and IL-36 cytokines in GPP lesions compared with PV, and this occurred proximal to neutrophils. We show both activated neutrophils and isolated neutrophil proteases can activate IL-36. Diverging from the Th1/Th17 pathophysiology of PV, significantly fewer IL23A, IL17A, IFNG, CXCL9, CXCL10 and MX1 transcripts were detected in GPP lesions. Our data indicate a level of sustained activation of IL-1 and IL-36 in GPP, inducing neutrophil chemokine expression, infiltration and pustule formation, suggesting that the IL-1 and IL-36 inflammatory axes are the main drivers of disease pathology in GPP.

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Comparison of the Inflammatory Circuits in Psoriasis Vulgaris, Non-Pustular Palmoplantar Psoriasis, and Palmo-Plantar Pustular Psoriasis

Project description:Comparison of the Inflammatory Circuits in Psoriasis Vulgaris, Non-Pustular Palmoplantar Psoriasis, and Palmo-Plantar Pustular Psoriasis

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Whole blood RNAseq from Generalised Pustular Psoriasis patients and healthy individuals

Project description:Whole blood RNAseq

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Clinically non-involved skin of patients with psoriasis, lichen planus, and healthy individuals

Project description:To investigate differences in the kinetics of allergic contact dermatitis reactions in psoriasis patients, molecular changes in clinically non-involved skin of psoriasis patients was investigated whole genome expression arrays of clinically non-involved skin of psoriasis (n=8), lichen planus (n=3), and healthy individuals (n=7) were performed

2014-05-31 | E-GEOD-58121 | biostudies-arrayexpress

Neutrophil and whole blood RNAseq from Generalised Pustular Psoriasis patients and healthy individuals

Project description:This SuperSeries is composed of the SubSeries listed below.

2019-01-18 | GSE123787 | GEO

Mature interleukin-36γ induces stratum corneum exfoliation in generalized pustular psoriasis by suppressing corneodesmosin

Project description:Loss-of-function mutations in the IL36RN gene encoding IL-36 receptor antagonist (IL-36RA) cause familial generalized pustular psoriasis (GPP), which sometimes begins shortly after birth and is difficult to treat, and its effects on the epidermis are unclear. This study aimed to investigate the involvement of IL-36 receptor agonists in the epidermal formation of GPP. In this study, we found that IL-36 receptor agonists, especially mature IL-36γ, stimulate IL-8 and proIL-36γ production in the epidermis, while down-regulating the genes encoding epidermal cornified envelope-related proteins such as corneodesmosin. IL-36 receptor antagonists and monoclonal anti-IL-36γ antibodies counteract the effect of mature IL-36γ on corneodesmosin in keratinocytes in a dose-dependent manner. In the epidermis of generalized pustular psoriasis patients with IL36RN loss-of-function mutations, proIL-36γ is overproduced in the epidermis and corneodesmosin protein expression is markedly decreased in the region of giant subcorneal pustules called Kogoj’s spongiform pustules with high neutrophil infiltration. IL-8 induced by mature IL-36γ induces several neutrophils in the epidermis, and the newly produced proIL-36γ is cleaved to the mature form by neutrophil proteases. This newly produced mature IL-36γ was predicted to further suppress the gene expression of the granulosa-stratum-associated protein, corneodesmosin, leading to significant stratum corneum exfoliation and formation of giant subcorneal pustules. Overall, our results elucidate the mechanism underlying the formation of Kogoj’s spongiform pustules in generalized pustular psoriasis.

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Based on Molecular Profiling of Gene Expression, Palmoplantar Pustulosis and Palmoplantar Pustular Psoriasis are Highly Related Diseases that Appear to Be Distinct from Psoriasis Vulgaris

Project description:There is a controversy surrounding the existence of palmoplantar pustulosis (PPP) and palmoplantar pustular psoriasis (PPPP) as separate clinical entities or as variants of the same clinical entity. We used gene expression microarray to compare gene expression in PPP and PPPP. PPP and PPPP could not be differentiated using gene expression microarray suggesting that they are not distinct clinical entities. Increased expression of GPRIN1, and ADAM23 in keratinocytes suggests that these proteins could be new therapeutic targets for PPP/PPPP. Skin biopsies from subjects with PPP (3), PPPP (6), psoriasis vulgaris (10) and acral skin from normal subjects (7) were analyzed using gene expression microarray. Principal component analysis showed that PPP and PPPP were different from psoriasis vulgaris and normal acral skin. However gene expression of PPP and PPPP clustered together and could not be used to differentiate PPP from PPPP. Gene-wise comparison between PPP and PPPP found no gene to be differentially expressed with a false discovery rate lower than 0.6. Surprisingly we found a higher expression of several genes involved in neural pathways (e.g. GPRIN and ADAM23) in PPP/PPPP as compared to psoriasis vulgaris and normal acral skin. Immunohistochemistry confirmed those findings and showed a keratinocyte localization for those proteins.

2016-06-30 | E-GEOD-80047 | biostudies-arrayexpress

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