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Comprehensive Single-Cell Chromatin and Transcriptomic Profiling of Peripheral Immune Cells in Non-Segmental Vitiligo

ABSTRACT: This study integrates single-cell RNA and ATAC sequencing to profile peripheral immune cells in nonsegmental vitiligo, providing insights into systemic immune dysregulation.

ORGANISM(S): Homo sapiens

PROVIDER: GSE282793 | GEO | 2025/02/05

REPOSITORIES: GEO

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Single-Cell Transcriptomics Reveals Peripheral Immune Responses in Non-Segmental Vitiligo

Project description:Vitiligo is a common autoimmune depigmented dermatology due to the destruction of melanocytes. Much evidence suggests that vitiligo is associated with systemic immune activation. Previous studies have focused on immune cell infiltration in and around lesion areas, while few studies have investigated the cell types and function of circulating immune cells in peripheral blood. We collected peripheral blood from five patients with progressive non-segmental vitiligo (PV) and three healthy controls (HC).Single-cell RNA sequencing(scRNA-seq) is used to investigate the mechanisms of peripheral immune responses in vitiligo patients.

2023-11-07 | GSE231794 | GEO

Gene-expression profiling between segmental vitiligo, generalized vitiligo and healthy individual

Project description:Investigate the gene expression change in the blood of segmental vitiligo, generalized vitiligo and healthy individual.

2016-04-08 | GSE80009 | GEO

Expression pattens of long non-coding RNAs in peripheral blood mononuclear cells of non-segmental vitiligo

Project description:Objective: We explored the patterns of long non-coding RNA (lncRNA) expression in peripheral blood mononuclear cells (PBMCs) from patients with non-segmental vitiligo. Methods: We used high-throughput RNA sequencing technology to generate sequence data from five patients with non-segmental vitiligo alongside five normal healthy individuals, and then performed bioinformatics analyses to detect the differential expression of lncRNA in PBMCs. Gene Ontology (GO) and pathway analyses were performed for functional annotation, and quantitative real-time polymerase chain reaction (qRT-PCR) was used to verify gene expression. Target miRNAs and mRNAs of differentially expressed lncRNAs were predicted using bioinformatics analysis. Results: A total of 292 lncRNAs were differentially expressed in non-segmental vitiligo (fold change≥2.0, P<0.05), of which 171 were upregulated and 121 were downregulated. Six differentially expressed lncRNAs were selected , namely ENST00000460164.1, ENST00000393264.2, NR-046211.1, NR-135491.1, NR-135320.1, and ENST00000381108.3, for validation by qRT-PCR. The results showed that ENST00000460164.1 and NR-046211.1 were highly expressed in PBMCs of non-segmental vitiligo. An lncRNA-miRNA-mRNA network containing two lncRNAs, 17 miRNAs, and 223 mRNAs was constructed. Conclusion: Our results revealed patterns of differentially expressed lncRNAs in the PBMCs of non-segmental vitiligo individuals. ENST00000460164.1, and NR-046211.1 may be potential biomarkers and drug targets for the treatment of non-segmental vitiligo.

2021-11-04 | GSE186928 | GEO

Single-Cell Transcriptomics Reveals Peripheral Immune Responses in Non-Segmental Vitiligo

Project description:Single-Cell Transcriptomics Reveals Peripheral Immune Responses in Non-Segmental Vitiligo

| PRJNA967697 | ENA

Comprehensive Single-Cell Chromatin and Transcriptomic Profiling of Peripheral Immune Cells in Non-Segmental Vitiligo

Project description:Comprehensive Single-Cell Chromatin and Transcriptomic Profiling of Peripheral Immune Cells in Non-Segmental Vitiligo

| PRJNA1190435 | ENA

Transcription profiling of skin from vitiligo patients and healthy volunteers reveals the WNT pathway as a target for re-pigmenting vitiligo lesions

Project description:Vitiligo is an acquired depigmentation of the skin inducing a marked alteration of the quality of life of affected individuals. Halting the disease progression and repigmenting the lesional skin represent the two faces of the therapeutic challenge in vitiligo. So far, none of them has been successfully addressed. Oxidative stress and immune system in genetically predisposed individuals participate to the complex pathophysiology of vitiligo. We performed a transcriptome and proteomic analysis on lesional, perilesional and non-depigmented skin of vitiligo patients compared to matched skin controls of healthy subjects. Our results show that the WNT pathway, implicated in melanocytes differentiation, was found to be altered in vitiligo skin. We demonstrated that the oxidative stress decreases WNT expression/activation in keratinocytes and in melanocytes. We developed an ex vivo skin model that remains functional up to 15 days. We then confirmed the decreased activation of the WNT pathway in human skin subjected to oxidative stress. Finally, using pharmacological agents that activate the WNT pathway, we treated the ex vivo depigmented skins from vitiligo patients and successfully induced the differentiation of resident stem cells into pre-melanocytes supporting further exploration of WNT activators to repigment vitiligo lesions. Total of 40 chips. 10 patients (3 biospies per patient: 1 lesional , 1 perilesional and 1 non lesional) ; 10 healthy volunteers (1biopsy in matched anatomical areas)

2015-10-01 | E-GEOD-65127 | biostudies-arrayexpress

Targeting the WNT pathway for repigmenting vitiligo

Project description:Vitiligo is an acquired depigmentation of the skin inducing a marked alteration of the quality of life of affected individuals. Halting the disease progression and repigmenting the lesional skin represent the two faces of the therapeutic challenge in vitiligo. So far, none of them has been successfully addressed. Oxidative stress and immune system in genetically predisposed individuaLesionalparticipate to the complex pathophysiology of vitiligo. We performed a transcriptome and proteomic analysis on lesional, perilesional and non-depigmented skin of vitiligo patients compared to matched skin controLesionalof healthy subjects. Our results show that the WNT pathway, implicated in melanocytes differentiation, was found to be altered in vitiligo skin. We demonstrated that the oxidative stress decreases WNT expression/activation in keratinocytes and in melanocytes. We developed an ex vivo skin model that remains functional up to 15 days. We then confirmed the decreased activation of the WNT pathway in human skin subjected to oxidative stress. Finally, using pharmacological agents that activate the WNT pathway, we treated the ex vivo depigmented skins from vitiligo patients and successfully induced the differentiation of resident stem celLesionalinto pre-melanocytes supporting further exploration of WNT activators to repigment vitiligo lesions.

2015-10-01 | GSE65127 | GEO

Differentially Expressed Circular RNAs and their Therapeutic Mechanism in Nonsegmental Vitiligo Patients Treated with Methylprednisolone

Project description:We identified the differentially expressed circular RNAs in vitiligo patients before and after treatment of methylprednisolone. We have completed the Arraystar Human circRNA Array V2 analysis of the 8 peripheral blood specimens. Whole blood samples (3 mL each) were collected by venipuncture into heparinized vacutainers from a total of four patients diagnosed with nonsegmental vitiligo before and after systemic glucocorticoid therapy (oral methylprednisolone tablets, 12mg daily for eight weeks).

2022-02-25 | GSE197415 | GEO

Urinary proteomics analysis of active vitiligo patients

Project description:Vitiligo is a common acquired skin disorder caused by immune-mediated destruction of epidermal melanocytes. Systemic glucocorticoids (GCs) have been used to prevent the progression of active vitiligo, with 8.2%–56.2% of patients insensitive to this therapy. Currently, there is a lack of biomarkers that can accurately predict and evaluate treatment responses. The goal of this study was to identify candidate urinary protein biomarkers to predict the efficacy of GCs treatment in active vitiligo patients and monitor the disease. In the present study, we aimed to identify urinary biomarkers that could predict and monitor the efficacy of steroid treatment. Urine samples were collected from the treatment-resistance group and treatment-effective group before and after GCs treatment and randomly divided into a discovery group and validation group. Differentially expressed proteins were determined using proteomic analysis.

2022-02-11 | PXD031595 |

Genome-wide analysis of gene expression within vitiligo mouse skin

Project description:Skin samples from mice in a model of vitiligo were selected for gene expression profiling in order to identify active inflammatory pathways. Total RNA isolated from 6 mouse samples from fresh skin, 3 from vitiligo mice and 3 from control mice.

2013-12-12 | E-GEOD-53147 | biostudies-arrayexpress

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