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Single-cell transcriptomic analysis reveals dynamic cellular processes in corneal epithelium during wound healing in cynomolgus monkeys

ABSTRACT: Single-cell transcriptomic analysis reveals dynamic cellular processes in corneal epithelium during wound healing in cynomolgus monkeys

PROVIDER: PRJNA1155650 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR30510538.fastq.gz	Fastqsanger.gz
	SRR30510539.fastq.gz	Fastqsanger.gz
	SRR30510540.fastq.gz	Fastqsanger.gz
	SRR30510541.fastq.gz	Fastqsanger.gz
	SRR30510542.fastq.gz	Fastqsanger.gz

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Single-cell transcriptomic analysis reveals dynamic cellular processes in corneal epithelium during wound healing in cynomolgus monkeys

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RNA-Seq Analysis Unraveling Novel Genes and Pathways Influencing Corneal Wound Healing

Project description:Transparent avascular cornea providing two third refraction to the eye. Restoration of corneal transparency and clear vision in a traumatic eye involves the action of many cytokines and signaling pathways. Out of several factors, stromal keratocytes/fibroblasts (CSFs) play a central role in corneal repair and wound healing. Post trauma, keratocytes/fibroblasts produce myofibroblasts to facilitate wound repair by synthesizing and secreting large extracellular matrix components, collagens, and alpha-smooth muscle actin stress fibers. This study aimed to perform RNASeq data analysis and pathway enrichments to gain a better understanding of gene regulation in corneal fibroblasts and myofibroblasts in corneal wound repair.

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The tissue-engineered human cornea as a model to study expression of matrix metalloproteinases during corneal wound healing

Project description:Corneal injuries remain a major cause of consultation in the ophthalmology clinics worldwide. Repair of corneal wounds is a complex mechanism that involves cell death, migration, proliferation, differentiation, and extracellular matrix (ECM) remodeling. In the present study, we used a tissue-engineered, two-layers (epithelium and stroma) human cornea as a biomaterial to study both the cellular and molecular mechanisms of wound healing. Gene profiling on microarrays revealed important alterations in the pattern of genes expressed by tissue-engineered corneas in response to wound healing. Expression of many MMPs-encoding genes was shown by microarray and qPCR analyses to increase in the migrating epithelium of wounded corneas. Many of these enzymes were converted into their enzymatically active form as wound closure proceeded. In addition, expression of MMPs by human corneal epithelial cells (HCECs) was affected both by the stromal fibroblasts and the collagen-enriched ECM they produce. Most of all, results from mass spectrometry analyses provided evidence that a fully stratified epithelium is required for proper synthesis and organization of the ECM on which the epithelial cells adhere. In conclusion, and because of the many characteristics it shares with the native cornea, this human two layers corneal substitute may prove particularly useful to decipher the mechanistic details of corneal wound healing. Primary cultures of human corneal epithelial cells cultivated on BSA (number of replicates: 7), Collagen type I (number of replicates: 2), Collagen type IV (number of replicates: 2), Fibronectin (number of replicates: 2), Tenascin C (number of replicates: 2) and Laminin (number of replicates: 2) matrix. Central, internal and external ring of wounded Tissue-engineered human cornea.

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