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RNA sequencing of circular RNAs, long non-coding RNAs ,and mRNAs in human keloid dermal tissues

ABSTRACT: RNA sequencing of circular RNAs, long non-coding RNAs ,and mRNAs in human keloid dermal tissues

PROVIDER: PRJNA878513 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR21491727_1.fastq.gz	Fastqsanger.gz
	SRR21491727_2.fastq.gz	Fastqsanger.gz
	SRR21491728_1.fastq.gz	Fastqsanger.gz
	SRR21491728_2.fastq.gz	Fastqsanger.gz
	SRR21491729_1.fastq.gz	Fastqsanger.gz

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RNA sequencing of circular RNAs, long non-coding RNAs ,and mRNAs in human keloid dermal tissues

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Project description:This study investigated the effects of extracellular matrix (ECM) rigidty on gene expression patterns in normal dermal fibroblasts (NDFs) and keloid dermal fibroblasts (KDFs). Cells were cultured on collagen coated polyacrylamide hydrogels with elastic moduli mimicking normal skin (8 kPa) or keloid scar tissue (214 kPa), and changes in gene expression were profiled using next-generation RNA-sequencing. Differential gene expression analysis identified overall significant differences in gene expression between the NDF and KDF populations. Despite high levels of inter-patient heterogeneity in the KDF samples, further principal components analysis revealed a subset of genes (PC5) that were specifically regulated by ECM rigidity. Gene set enrichment analysis of the PC5 genes identified classic pathways associated with mechanotransduction, including Hippo Signalling and Regulation of the Actin Cytoskeleton, as well as genes associated with the Autophagy pathway. Additional in vitro studies and human tissue staining confirmed the biomechanical regulation of autophagic flux in NDFs and KDFs and differential remodelling of the lysosome in KDFs and keloid scars. Together, these findings implicate autophagy and lysosomal remodelling as biomechanically dysregulated pathways in keloid fibroblasts, and these mechanisms may contribute to scar pathogenesis.

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