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Suture-anchored cutaneous tension induces persistent hypertrophic scarring in a novel murine model [RNA-Seq]

ABSTRACT: Suture-anchored cutaneous tension induces persistent hypertrophic scarring in a novel murine model [RNA-Seq]

PROVIDER: PRJNA1020785 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR26162379_1.fastq.gz	Fastqsanger.gz
	SRR26162379_2.fastq.gz	Fastqsanger.gz
	SRR26162380_1.fastq.gz	Fastqsanger.gz
	SRR26162380_2.fastq.gz	Fastqsanger.gz
	SRR26162381_1.fastq.gz	Fastqsanger.gz

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Suture-anchored cutaneous tension induces persistent hypertrophic scarring in a novel murine model [miRNA]

Project description:Hypertrophic scars arise from dysregulated wound healing under prolonged mechanical tension, causing disfiguring fibrosis. However, limited preclinical models replicate key features of human tension-induced scarring. We developed an innovative murine model utilizing suture anchoring to impose persistent transverse-axial stretch across healing incisions, mimicking excessive wound tension that leads to hypertrophy clinically. Dorsal paired incisions were generated in mice, with wound edges on the upper back sutured to the rib cage while leaving wound edges on the lower back relaxed. This localized anchoring restrained wound contraction, maintaining high tension throughout remodeling analogous to scars widening under stress. Stretched upper wounds developed profound fibrotic changes compared to relaxed controls. Scars induced by suture-anchored tension displayed macroscopic hypertrophy, hardness, erythema, and pruritis up to 3 months. Histologically, scars induced by suture-anchored tension were hypercellular, hypervascular, hyperproliferative with disorganized extracellular matrix deposition, and displayed molecular hallmarks of hypertrophic fibrosis. MiRNA sequencing revealed the different signature in suture-anchored tension induced hypertrophic scars compared to control normal scars.

2023-09-28 | GSE243948 | GEO

Suture-anchored cutaneous tension induces persistent hypertrophic scarring in a novel murine model [RNA-Seq]

Project description:Hypertrophic scars arise from dysregulated wound healing under prolonged mechanical tension, causing disfiguring fibrosis. However, limited preclinical models replicate key features of human tension-induced scarring. We developed an innovative murine model utilizing suture anchoring to impose persistent transverse-axial stretch across healing incisions, mimicking excessive wound tension that leads to hypertrophy clinically. Dorsal paired incisions were generated in mice, with wound edges on the upper back sutured to the rib cage while leaving wound edges on the lower back relaxed. This localized anchoring restrained wound contraction, maintaining high tension throughout remodeling analogous to scars widening under stress. Stretched upper wounds developed profound fibrotic changes compared to relaxed controls. Scars induced by suture-anchored tension displayed macroscopic hypertrophy, hardness, erythema, and pruritis up to 3 months. Histologically, scars induced by suture-anchored tension were hypercellular, hypervascular, hyperproliferative with disorganized extracellular matrix deposition, and displayed molecular hallmarks of hypertrophic fibrosis. MRNA sequencing revealed the fibrogenic signature in suture-anchored tension induced hypertrophic scars, which exhibited transcriptional overlap with mechanically-stretched scars, human hypertrophic and keloid scars.

2023-09-28 | GSE243949 | GEO

Suture-anchored cutaneous tension induces persistent hypertrophic scarring in a novel murine model

Project description:Suture-anchored cutaneous tension induces persistent hypertrophic scarring in a novel murine model

| PRJNA1020782 | ENA

Suture-anchored cutaneous tension induces persistent hypertrophic scarring in a novel murine model [miRNA]

Project description:Suture-anchored cutaneous tension induces persistent hypertrophic scarring in a novel murine model [miRNA]

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JUN promotes hypertrophic skin scarring via CD36

Project description:Hypertrophic skin scarring following dermal injury causes extreme pain and psychological trauma for patients. Unfortuately, we do not have effective treatments to prevent or reverse skin scarring. Using RNA and ATAC sequencing of mouse and human fibroblasts, we show that JUN expressing fibroblasts are responsible for skin scarring by regulating CD36 expression. In summary, we show that CD36 antagonism by represent a therapeutic target to overcome JUN hypertrophic skin scarring.

2021-06-22 | GSE178562 | GEO

Suture-anchored cutaneous tension induces persistent hypertrophic scarring in a novel murine model

Project description:This SuperSeries is composed of the SubSeries listed below.

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JUN promotes hypertrophic skin scarring via CD36

Project description:JUN promotes hypertrophic skin scarring via CD36

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High-salt diet promotes hypertrophic scarring through TRPC3-mediated mitochondrial Ca2+ homeostasis dysfunction

Project description:Diet High in salt content have been associated with cardiovascular disease and chronic inflammation. We recently demonstrated that transient receptor potential canonical 3 (TRPC3) channels regulate myofibroblast transdifferentiation in hypertrophic scars. Here, we examined how high salt activation of TRPC3 participates in hypertrophic scarring during wound healing. In vitro, we confirmed that high salt increased the TRPC3 protein expression and the marker of myofibroblast alpha smooth muscle actin (α-SMA) in wild-type mice (WT) primary cultured dermal fibroblasts but not Trpc3-/- mice. Activation of TRPC3 by high salt elevated cytosolic Ca2+ influx and mitochondrial Ca2+ uptake in dermal fibroblasts in a TRPC3-dependent manner. High salt activation of TRPC3 enhanced mitochondrial respiratory dysfunction and excessive reactive oxygen species (ROS) production by inhibiting pyruvate dehydrogenase action, that activated ROS-triggered Ca2+ influx and the Rho kinase/MLC pathway in WT mice but not Trpc3-/- mice. In vivo, a persistent high-salt diet promoted myofibroblast transdifferentiation and collagen deposition in a TRPC3-dependent manner. Therefore, this study demonstrates that high salt enhances myofibroblast transdifferentiation and promotes hypertrophic scar formation through enhanced mitochondrial Ca2+ homeostasis, which activates the ROS-mediated pMLC/pMYPT1 pathway. TRPC3 deficiency antagonizes high salt diet-induced hypertrophic scarring. TRPC3 may be a novel target for hypertrophic scarring during wound healing.

2023-10-24 | PXD042087 | Pride

Epigenome analysis of normal skin and hypertrophic scar samples

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.

2023-04-20 | GSE229848 | GEO

The Role of the Mammalian Target of Rapamycin in Keloid and Hypertrophic Scars

Project description:We hypothesize that, the mTOR pathway is a dominant pathway in cultured keloid and hypertrophy scar fibriblasts compared to normal skin cells. Certain pathway changes can be detected after medication treatment. Global gene expression in RNA samples from rapamycin and tacrolimus treated fibroblasts (from normal skin and hypertrophic scars, keloid scars) is assayed to study the possibility to use mTOR inhibitors as potential drug to treat abnormal scarring. We investigated the difference between normal wound healing and hypertrophic scars and keloids as well.

2014-05-20 | E-MTAB-2509 | biostudies-arrayexpress

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