Browse
Submit Data
Databases
API
Help

Dataset Information

0 Views

0 Connections

0 Citations

0 Reanalyses

0 Downloads

Omics score: 0

Differences in cell subsets between sun-exposed and unexposed skin: preliminary single-cell sequencing and biological analysis from a single case

ABSTRACT: The microcosmic and specific changes of human photoaging skin without chronologic aging is still unclear and rare-ly analyzed. We aimed to assess biological processes of the cell-subgroups alteration and mechanisms of skin pho-toaging using single cell sequencing and biological analysis were used between sun-exposed forearm skin and un-exposed buttock skin in same individual via skin punch biopsy.

ORGANISM(S): Homo sapiens

PROVIDER: GSE275491 | GEO | 2024/08/28

REPOSITORIES: GEO

ACCESS DATA

Json Xml

Dataset's files

Source:

			Action	DRS
		Other

Items per page:

1 - 1 of 1

Similar Datasets

Alterations in Extracellular Matrix Composition during Aging and Photoaging of the Skin

Project description:Human skin is composed of the cell-rich epidermis, the extracellular matrix (ECM) rich dermis, and the hypodermis. Within the dermis, a dense network of ECM proteins provides structural support to the skin and regulates a wide variety of signaling pathways which govern cell proliferation and other critical processes. Both intrinsic aging, which occurs steadily over time, and extrinsic aging (photoaging), which occurs as a result of external insults such as UV radiation, cause alterations to the dermal ECM. In this study, we utilized both quantitative and global proteomics, alongside single harmonic generation (SHG) and two-photon autofluorescence (TPAF) imaging, to assess changes in dermal composition during intrinsic and extrinsic aging. We find that both intrinsic and extrinsic aging result in significant decreases in structural ECM integrity, evidenced by decreasing collagen abundance and increasing fibril fragmentation, and ECM-supporting proteoglycans. Intrinsic aging also produces changes distinct from those produced by photoaging, including reductions in elastic fiber and crosslinking enzyme abundance. In contrast, photoaging is primarily defined by increases in elastic fiber-associated protein and pro-inflammatory proteases. Changes induced by photoaging are evident even in comparisons of young underarm and forearm skin, indicating that photoexposure experienced by an individual’s mid-20s is sufficient for large-scale proteomic alterations and that molecular-level changes due to photoaging are evident well before clinical indications are present. GO term enrichment revealed that both intrinsic aging and photoaging share common features of chronic inflammation.

2020-07-03 | PXD015982 | Pride

Whole genome expression data from pre-auricular and post-auricular skin tissues

Project description:Photoaging is cumulative damage that is caused by chronic, repeated solar radiation exposure to skin. Its molecular mechanisms are poorly understood at the level of global gene expression.This study set out to uncover genes and functional modules involved in photoaging at the level of transcription, with the use of skin samples from Chinese women.Using the Illumina microarray platform, we compared the genome-wide expression profiles of 21 pairs of sun-exposed pre-auricular and sun-protected post-auricular skin samples from northern Chinese women.In total, 1,621 significantly regulated genes were identified from skin due to photoaging by microarray analysis. These genes were subjected to functional enrichment analyses with both the Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) annotation databases. As revealed by the functional analyses, the up-regulated functional modules in sun-exposed pre-auricular skin were related to various cellular activities in regulation of the skin homeostasis (e.g., the KEGG pathways TGF-beta signaling pathway and ECM-receptor interaction ), whereas the down-regulated functional modules were mostly metabolic-related. Additionally, five selected genes (HOXA5, LEPR, CLDN5, LAMC3, and CGA) identified as differentially-expressed were further confirmed on their expression by quantitative real-time PCR (Q-RT-PCR). Our findings suggest that damage from skin homeostasis and down-regulation of skin metabolism may play important roles in the process of photoaging. We compared the genome-wide expression profiles of 21 pairs of sun-exposed pre-auricular and sun-protected post-auricular skin samples from northern Chinese women by using the Illumina microarray platform.

2014-02-07 | E-GEOD-38308 | biostudies-arrayexpress

Molecular Analysis and Characteristics of Ethnic Skin

Project description:In this study, we used microarray analysis to investigate molecular differences underlying the determination of pigmentation in various skin types, and we used immunohistochemistry to validate the expression patterns of several interesting targets that were identified. Whole skin gene expression profile were investigated in three ethnic groups:1) Caucasian 2)Asian 3)African. In each group, 4 mm whole skin punch biopsies were taken from forearm of 10 subjects, and gene expression level were tested by agilent whole human genome microarray. Samples with mRNA degraded: African_skin_03, Asian_skin_02, Asian_skin_06, and Caucasian_skin_7.

2014-07-31 | E-GEOD-54638 | biostudies-arrayexpress

Whole genome expression data from pre-auricular and post-auricular skin tissues

2014-02-07 | GSE38308 | GEO

miRNA expression data from sun-exposed and sun- protected skin of young (18-25 years) and old (>70 years) females

Project description:In this study we explored the effects of chronological and photoageing on the miRNome of human skin. To this end, miRNA expression was analysed in biopsies collected from sun-exposed (outer arm) and sun-protected (inner arm) skin from fair-skinned (phototype II/III) healthy female volunteers of two age groups: young, 18-25 years and aged, >70 years. Strict inclusion criteria were used for photoageing scoring and for chronological ageing. Microarray analysis revealed that chronological ageing had minor effect on the human skin miRNome. In contrast, photoageing had a robust impact on miRNAs, and a set of miRNAs differentially expressed between sun-protected and sun-exposed skin of the young and aged groups was identified. We have performed miRNome analysis (using microarray) on RNA isolated from sun-exposed and sun-protected skin of young and old females

2018-08-31 | GSE114006 | GEO

Project description:Human forearm skin microbiome

| PRJNA633151 | ENA

Chip-chip from human epidermis with H3ac

Project description:The UV radiation induced epigenetic changes play an important role in photoaging, but experimental evidence of histone modification to support this perspective has been scarce. Analyse the histone H3 acetylation pattern in sun-exposed and non-exposed skin by ChIP-chip. 227 genes displayed significant histone H3 hyperacetylation and 81 genes displayed significant histone H3 hypoacetylation in sun-exposed skins.

2018-02-28 | GSE104764 | GEO

Molecular and Histological Characterization of Age Spots

Project description:In this study, we used immunohistochemical analysis and microarray analysis to investigate the mechanism underlying the development of age spots, focusing on the expression of specific markers associated with the functions and proliferation of melanocytes and keratinocytes 10 subjects of phototypes I or II (all female, age = 53-70) with various sizes and colors of age spots on their forearms were recruited for the study. Four mm whole skin punch biopsies were taken from age spots on the forearm of each subject and from a perilesional control area in the vicinity of each age spot.

2015-04-15 | E-GEOD-57103 | biostudies-arrayexpress

Differences in cell subsets between sun-exposed and unexposed skin: preliminary single-cell sequencing and biological analysis from a single case

Project description:Differences in cell subsets between sun-exposed and unexposed skin: preliminary single-cell sequencing and biological analysis from a single case

| PRJNA1151082 | ENA

Project description:UVB-induced skin photoaging

| PRJNA1048364 | ENA