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Single-cell RNA-seq reveals fibroblast heterogeneity and increased mesenchymal fibroblasts in human fibrotic skin diseases
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Single-cell RNA-seq reveals fibroblast heterogeneity and increased mesenchymal fibroblasts in human fibrotic skin diseases
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Single-cell RNA-seq reveals fibroblast heterogeneity and increased mesenchymal fibroblasts in human fibrotic skin diseases
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Journal Article
Single-cell RNA-seq reveals fibroblast heterogeneity and increased mesenchymal fibroblasts in human fibrotic skin diseases
2021
Overview
Fibrotic skin disease represents a major global healthcare burden, characterized by fibroblast hyperproliferation and excessive accumulation of extracellular matrix. Fibroblasts are found to be heterogeneous in multiple fibrotic diseases, but fibroblast heterogeneity in fibrotic skin diseases is not well characterized. In this study, we explore fibroblast heterogeneity in keloid, a paradigm of fibrotic skin diseases, by using single-cell RNA-seq. Our results indicate that keloid fibroblasts can be divided into 4 subpopulations: secretory-papillary, secretory-reticular, mesenchymal and pro-inflammatory. Interestingly, the percentage of mesenchymal fibroblast subpopulation is significantly increased in keloid compared to normal scar. Functional studies indicate that mesenchymal fibroblasts are crucial for collagen overexpression in keloid. Increased mesenchymal fibroblast subpopulation is also found in another fibrotic skin disease, scleroderma, suggesting this is a broad mechanism for skin fibrosis. These findings will help us better understand skin fibrotic pathogenesis, and provide potential targets for fibrotic disease therapies.
Fibroblasts are found to be heterogeneous in multiple fibrotic diseases, but fibroblast heterogeneity in fibrotic skin diseases is not well characterized. Here the authors employ scRNA-seq to explore fibroblast heterogeneity in keloid, a paradigm of fibrotic skin diseases.
Publisher
Nature Publishing Group UK,Nature Publishing Group,Nature Portfolio
Subject
/ 13/21
/ 13/31
/ 13/51
/ 14/19
/ 38/39
/ 38/77
/ 45/91
/ 631/114
/ Cell Adhesion Molecules - genetics
/ Cell Adhesion Molecules - metabolism
/ Collagen
/ Disease
/ Extracellular Matrix - genetics
/ Extracellular Matrix - metabolism
/ Extracellular Matrix - pathology
/ Fibrosis
/ Gene Expression Regulation - genetics
/ Humanities and Social Sciences
/ Humans
/ Ligands
/ RNA-Seq
/ Science
/ Scleroderma, Systemic - genetics
/ Scleroderma, Systemic - metabolism
