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Tendon injury

ABSTRACT: Tendon injury

PROVIDER: PRJNA1027305 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR22750185_1.fastq.gz	Fastqsanger.gz
	SRR22750185_2.fastq.gz	Fastqsanger.gz
	SRR22750186_1.fastq.gz	Fastqsanger.gz
	SRR22750186_2.fastq.gz	Fastqsanger.gz
	SRR22750187_1.fastq.gz	Fastqsanger.gz

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Partial Tendon Injury at the Tendon-to-Bone Enthesis Activates Skeletal Stem Cells

Project description:Partial tendon-to-bone interface (TBI) injuries heal in a mechanically inferior manner and redevelop healthy uninjured tissue morphology. The origin of the cells involved in tendon-to-bone healing remains unknown. We employed a rigorous approach to evaluate if mouse skeletal stem cells (mSSC) play a role in tendon-to-bone healing after partial-injury. Using fluorescence-activated cell sorting we identified that found that they are present within the TBI. Using a TBI-injury rainbow lineage tracing mouse model, we demonstrated that injury-responsive cells within the TBI and calcaneus proliferate polyclonally following partial-tendon injury at the TBI. These injury-responsive clonal cells express skeletal marker SP7. We quantified the differences in mSCC frequency after TBI-injury and found that mSSC respond to injury with a higher frequency and have associated changes in gene expression, with the specific down-regulation of the TGFβ signaling pathway. Exogenous delivery of TGFβ after injury was found to reduce the mSSC response after injury. These findings suggest that mSSC may facilitate tendon-to-bone healing by downregulating TGFβ signaling within the mSSC niche.

2022-02-14 | GSE167080 | GEO

RNA-seq of Wister Rat blood serum to investigate small non-coding RNAs in serum as biomarkers of tendon injury

Project description:Injury was induced in the left Achilles tendon by needle puncture. Rats were sacrificed 4 and 21 days post injury. Shams, in which the tendon was isolated but not punctured, were included as controls. Serum was collected post-mortem and RNAseq used to identify differentially expressed ncRNAs.

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Project description:We investigated calcaneal tendon extracellular matrix (ECM) remodeling after gastrocnemius muscle injury using a rat model. Wistar rats were randomly divided into four groups: control group (C; animals that were not exposed to muscle injury) and harvested at different time points post gastrocnemius muscle injury (3, 14 and 28 days) for gene expression analysis. qRT-PCR was performed using TaqMan Universal PCR Master Mix system (Applied Biosystems, CA, USA - Cat. 4304437).

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Interleukin-1b in Tendon Injury Enhances Reparative Gene and Protein Expression in Mesenchymal Stem Cells

Project description:Intralesional mesenchymal stem cell (MSC) therapy has improved tissue architecture and reinjury rates in equine tendon injury; however, the mechanisms by which they promote repair are still being investigated. Therefore, the objectives of this study were to determine how the predominate pro-inflammatory cytokines present in a surgically induced model of equine tendon injury modulate MSC gene and protein expression.

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Partial Tendon Injury at the Tendon-to-Bone Enthesis Activates Skeletal Stem Cells

Project description:Partial Tendon Injury at the Tendon-to-Bone Enthesis Activates Skeletal Stem Cells

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Proteomic analysis of tendon overuse injury and repair mechanism

Project description:Proteomic analysis of tendon overuse injury and repair mechanism

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scRNA and snATAC sequencing of cells harvested from the tendon injury site after a severe burn/tenotomy injury

Project description:scRNA and snATAC sequencing of cells harvested from the tendon injury site after a severe burn/tenotomy injury in Hoxa11 lineage traced mice allowed for differentation tracing of MSCs located in zeugopod after severe heterotopic ossification inducing injury. The use of immobilization also allowed us to determine the effects of limb immoblization on MSCs during aberrant wound healing.

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TrkAWT and TrkAF592A animals at 14 d post-operative tendon injury for scRNA-Seq.

Project description:Peripheral afferent neurons terminate at the surfaces of tendons, yet their role after injury beyond nociceptive functions remain unclear. Using transgenic animal models, sensory neurons were found to sprout after Achilles tendon injury in domains of Nerve growth factor (NGF) expression. Conditional deletion of Ngf in either myeloid or mesenchymal cell types led to tendon repair defects – findings phenocopied by inactivation of TrkA (Tropomyosin receptor kinase A) using a knockin mouse model. We sought to identify the signals modulated with neural TrkA inhibition. A combination of single cell and spatial transcriptomic analysis was performed on the Achilles injury site of TrkAF592A animals and compared them to TrkAWT.

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Spatial transcriptomics of the achilles tendon harvested from the injury site with and without TrkA neuronal inhibition

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