Project description:Hypertrophic scarring (HS) is characterized by excessive extracellular matrix deposition, matrix metalloprotein gene activation, and fibroblast invasive growth. However, the methylation level of hypertrophic scarring is poorly understood. Genome wide DNA methylation profiling of normal skin and hypertrophic scar. The Illumina Infinium Methylation EPIC BeadChip (850K) was used to obtain DNA methylation profiles across approximately 853,307 CpGs in liquid based scar samples. Samples included 6 normal skin, and 6 hypertrophic scar.
Project description:To explore the functional difference between CD90+CD39+ and CD90+CD39- fibroblasts in human hypertrophic scar and normal skin, the gene expresson microarray was performed on Live CD49f- E-Cadherin- Lin- CD45- CD31- CD90+ CD39+ and Live CD49f- E-Cadherin- Lin- CD45- CD31- CD90+ CD39- cells sorted from suspension disgested from three human hypertrophic scar samples; and Live CD49f- E-Cadherin- Lin- CD45- CD31- CD90+ CD39+ cells sorted from suspension disgested from three human normal skin samples
Project description:The clinical manifestations and presentation of rhinophyma closely resemble those of hypertrophic scar tissue, both presenting as firm, fibrotic growths. Despite this phenotypic similarity, a critical divergence is observed following surgical intervention: the affected skin in rhinophyma can revert to its normal state without scar recurrence, a favorable outcome starkly contrasting with the behavior of hypertrophic scars. The underlying mechanisms for this phenomenon have yet to be elucidated. The aim of this study is to uncover the cellular and molecular disparities between these two pathological conditions using single-cell sequencing technology to resolve this clinical paradox. The objective of this study is to compare the single-cell transcriptomic profiles of rhinophyma and hypertrophic scar tissues to identify key cell types and molecular pathways that may account for the distinct healing fate of rhinophyma post-surgery and provide novel insights for the prevention and treatment of hypertrophic scars.
Project description:The goal was to obtain expression data from the deep cones in early human hypertrophic scars to be used to confirm expression data obtained in a porcine model. Three samples of early human hypertrophic scar were obtained and processed with the Affymetrix Human GeneChip® Human Genome U133 plus 2.0. Sample demographics were Black 2, White 1; upper extremity 2, neck 1; times since injury 6.7 months and 10.8 months; and patient ages were 19 and 54.
Project description:Here, using a label-free quantification approach, global lactylome and proteome analyses were performed based on 4 hypertrophic scar and 4 adjacent normal skin samples.
Project description:N6-methyladenosine (m6A) is the most prevalent internal modification in eukaryotes. Here, m6A-mRNA and lncRNA transcriptomes were profiled for HS and full-thickness normal skin (NS) tissues using human m6A-mRNA and lncRNA epitranscriptomic microarray. These data exhibited 5838 differentially m6A methylated transcripts (4706 mRNAs, 1132 lncRNAs) between HS and NS tissues. Of note, most of them (about 94%) were hypermethylated. And 3197 differentially expressed mRNAs (1466 upregulated and 1731 downregulated) were obtained by microarray. Conjoint analysis of differentially methylated and differentially expressed transcripts screened 815 transcripts (675 hyper-up, 140 hypo-down). Among them, IFNGR1 (ENST00000367739) and IL37 (ENST00000349806) are two of the most significant methylated transcripts in hyper-up and hypo-down groups. This study proposed a transcriptional regulatory network of m6A modifications on mRNA and lncRNA in human hypertrophic scar, which may bring a new clue into the development, pathogenesis, and treatment of abnormal scars.