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Prrx1 fibroblasts represent a pro-fibrotic lineage in the mouse ventral dermis

ABSTRACT: Prrx1 fibroblasts represent a pro-fibrotic lineage in the mouse ventral dermis

PROVIDER: PRJNA668395 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR12804500_1.fastq.gz	Fastqsanger.gz
	SRR12804500_2.fastq.gz	Fastqsanger.gz
	SRR12804501_1.fastq.gz	Fastqsanger.gz
	SRR12804501_2.fastq.gz	Fastqsanger.gz
	SRR12804502_1.fastq.gz	Fastqsanger.gz

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Prrx1 fibroblasts represent a pro-fibrotic lineage in the mouse ventral dermis

Project description:Skin scarring following dermal injury causes extreme pain and pschological trauma for patients. Currently, we do not have effective treatments to prevent or reverse skin scarring. Fibroblast heterogeneity has been shown within the unwounded mouse dorsal dermis, with fibroblast subpopulations being identified according to anatomical location and embryonic lineage. Using RNA-sequencing and single cell RNA sequencing, we demonstrate that Prrx1-expressing mouse fibroblasts are responsible for acute and chronic scaring in the ventral mouse dermis. In summary, we have identified and characterized a fibroblast subpopulation in the mouse ventral dermis with intrinsic scar-forming potential.

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Prrx1 Fibroblasts Represent a Pro-fibrotic Lineage in the Mouse Ventral Dermis.

Project description:Fibroblast heterogeneity has been shown within the unwounded mouse dorsal dermis, with fibroblast subpopulations being identified according to anatomical location and embryonic lineage. Using lineage tracing, we demonstrate that paired related homeobox 1 (Prrx1)-expressing fibroblasts are responsible for acute and chronic fibroses in the ventral dermis. Single-cell transcriptomics further corroborated the inherent fibrotic characteristics of Prrx1 fibroblasts during wound repair. In summary, we identify and characterize a fibroblast subpopulation in the mouse ventral dermis with intrinsic scar-forming potential.

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Beta-catenin stabilization of skin fibroblasts causes fibrotic lesions by preventing adipocyte differentiation of the reticular dermis

Project description:The Wnt/alpha-catenin pathway plays a central role in epidermal homeostasis and regeneration but how it affects fibroblast fate decisions is unknown. Here, we investigated the effect of targeted alpha-catenin stabilization in dermal fibroblasts. Comparative gene expression profiling of Sca1- and Sca1+ neonatal fibroblasts, from upper and lower dermis respectively, confirmed that Sca1+ cells had a pre-adipocyte signature and revealed differential expression of Wnt/alphaâ??catenin-associated genes. By targeting all fibroblasts or selectively targeting Dlk1+ lower dermal fibroblasts, we found that ï?¢-catenin stabilization between E16.5 and P2 resulted in a reduction in the dermal adipocyte layer with a corresponding increase in dermal fibrosis and an altered hair cycle. The fibrotic phenotype correlated with a reduction in the potential of Sca1+ fibroblasts to undergo adipogenic differentiation ex vivo. Our findings indicate that Wnt/alpha-catenin signaling controls adipogenic cell fate within the lower dermis, which potentially contributes to the pathogenesis of fibrotic skin diseases. The dermis was separated from back skin of PDGFRAeGFP postnatal pups (P2) by incubation with thermolysin (0.25 mg/ml) (Sigma T7902) overnight at 4Â° and further processed as previously described (Collins et al., 2011). Cells were labeled in PBS + 10% FBS TruStain fcX anti-mouse blocking buffer with the following antibodies: anti-mouse Ly-6A/E (Sca-1)-Alexa Fluor-700 17. Two populations of cells were collected in triplicate. The PDGFRaH2BeGFP/Sca1- and the PDGFRaH2BeGFP/Sca1+. RNA was isolated and prepared for microarray analysis and hybridized to Affymetrix MG430.2A arrays. C, digested in DMEM + 10% FBS containing 2.5 mg/mL collagenase I (Gibco 17100- 017), and further processed

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Beta-catenin stabilization of skin fibroblasts causes fibrotic lesions by preventing adipocyte differentiation of the reticular dermis

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Microarray data of dermal cells from ventral or dorsal skin of virgin and pregnant mice

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