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

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

PROVIDER: PRJNA1026942 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR26351452_1.fastq.gz	Fastqsanger.gz
	SRR26351452_2.fastq.gz	Fastqsanger.gz
	SRR26351453_1.fastq.gz	Fastqsanger.gz
	SRR26351453_2.fastq.gz	Fastqsanger.gz
	SRR26351454_1.fastq.gz	Fastqsanger.gz

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

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 TrkA^F592A animals and compared them to TrkA^WT.

2023-11-27 | GSE245097 | GEO

RNA Sequencing Facilitates Quantitative Analysis of Cont/Dicer KO/Scx HT mice Achilles Tendon Transcriptome

Project description:To investigate which mRNA and miRNA are involved in Dicer KO mouse tendon hypoplasticity, we performed RNA-seq and small RNA-seq using RNA from Achilles tendon of Cont (Dicer f/f), Scx HT (ScxCre/+ Knock In:Dicer +/+) and Dicer KO (ScxCre/+ Knock In:Dicer f/f) mice at 4 weeks of age. Achilles tendon from 4-week-old female mice was harvested, RNA was isolated using an RNA extraction kit. RNA libraries were generated and sequenced by K. K. DNAFORM (Tokyo, Japan). The libraries were sequenced by Illumina HISEQ4000 using Illumina provided protocol. Differential gene expression was analyzed with R Bioconductor DESeq2. We found that a large portion of tendon-fibroblast characteristic genes was downregulated in Dicer KO mice Achilles tendon compared to Cont and Scx HT.

2022-05-31 | GSE186353 | GEO

Effects of running for 1h on gene expression in Achilles tendon cells of SD rats

Project description:The Achilles tendon is the thickest tendon in the human body, and Achilles tendinopathy is its most prevalent disorder, often considered a consequence of overuse. While disruption to the collagen fibers represents a significant manifestation of Achilles tendinopathy, strikingly little is known about the mechanisms by which healthy tendon accumulates damage in vivo.As existing studies of tendon biomechanics and mechanobiology predominantly relied on in vitro or ex vivo experiments on isolated tissues, it is still largely unknown whether and how disruptions occur to the collagen molecules in healthy Achilles tendons following physiological activities. We reported the first RNA-seq analysis reflecting transcriptome changes in healthy rat Achilles tendons following running, providing a resource for future investigations in tendon mechanobiology and sports medicine.

2024-10-07 | GSE269529 | GEO

Expression data from rat Achilles tendon-derived stem cells during development

2015-07-10 | GSE68485 | GEO

Expression data from rat Achilles tendon-derived stem cells during development

Project description:We have compared the gene expression profile of rat Achilles tendon-derived stem cells in post-natal tendon development. Rat tendon stem/progenitor cells (TSPCs) were isolated at different stages of post-natal development: TSPCs-1d, TSPCs-7d and TSPCs-56d. TSPCs at different post-natal development stages (1d, 7d and 56d) were isolated, cultured and used for microarray analyses at passage 2. All TSPCs in this study were of isolated from more than one individual. Total RNA was extracted and fragmented biotin-tagged cRNA was hybridized to Rat Genome 230 2.0 Array.

2015-07-10 | E-GEOD-68485 | biostudies-arrayexpress

Gene expression in Achilles tendon cells of SD rats after 1 h of running followed by 12 h of rest

Project description:Achilles tendinopathy is often thought to be a consequence of overuse of the Cells within the Achilles tendon of healthy rats undergo a series of changes following physiologic levels of mechanical stimulation after running, and we further explored the transcriptome changes in Achilles tendon cells during post-exercise recovery. Our current experiment reveals RNA-seq analysis of the transcriptome of the rat Achilles tendon after 12 hours of rest following running.

2024-10-07 | GSE270400 | GEO

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

2023-11-27 | GSE244921 | GEO

Structure-function Relationships in Human Tendons: Interfascicular Matrix Specialisation in the Achilles Tendon C4PR_LIV

Project description:Tendon is a highly aligned connective tissue, in which the macro-structure consists of collagen-rich fascicles surrounded by interfascicular matrix (IFM). In a series of recent studies in equine tissue, we have demonstrated specialisation of tendon composition, structure and mechanics to achieve the tendon’s functional requirements, specifically reporting extensive specialisation of the IFM region in the energy storing superficial digital flexor tendon. We have also demonstrated loss of functional specialisms with ageing, leading to a hypothesised new paradigm for tendinopathy, focused on the importance of the IFM. However, to date, there have been no studies focused on structure-function specialisation or the IFM in functionally distinct human tendons. Here, we compare the positional anterior tibialis tendon and energy storing Achilles tendon, performing a detailed analysis of the composition and mechanical properties of both fascicle and IFM regions, to test the hypothesis that the IFM in the energy storing Achilles tendon has specialised composition and mechanical properties, and that these specialisations are lost with ageing. We demonstrate that the IFM is specialised in the energy storing Achilles tendon, with greater elasticity and fatigue resistance than in the positional anterior tibialis tendon. While there were few age-related alterations in mechanics, we did identify age-related alterations in the IFM proteome of the Achilles tendon specifically, which is predicted to be regulated by TGF-beta signalling and may be responsible for the trend towards decreased fatigue resistance observed in the Achilles IFM with ageing.

2020-11-11 | PXD018212 | Pride

Effect of optogenetic-induced muscle loading on the transcriptomics of murine Achilles tendon and calcaneus

Project description:We used optogenetics to induce skeletal muscle contraction and unilaterally load the Achilles tendon and enthesis in young (i.e., during growth) Acta1Cre;Ai32 mice. We then performed gene expression analysis using data obtained from RNA-seq of optogenetically loaded tendon and enthesis (bone) at two time points.

2023-05-31 | GSE226742 | GEO

Human amniotic stem cells transcriptome is affected after xenotransplantation in a sheep achilles tendon defect model.

Project description:Amniotic derived cells are ideal seed cells for regenerative medicine protocols since they conjugate a remarkable plasticity to safety properties. This study investigated the role exerted by human amniotic cells during the process of tendon healing. In particular, in the present research it has been evaluated, by microarray technique, the presence of transcriptome variations in human amniotic epithelial (hAECs) and mesenchymal (hAMCs) stem cells when xenotransplanted into the preclinical ovine model of tendon defect, compared to freshly isolated ones. This analysis allowed to understand in which way, after 28 days transplantation, hAECs and hAMCs transcripts have been affected. Total of 4 experiments.Two-condition experiment, Human amniotic stem cells xenotransplantated in a sheep achilles tendon vs.HAEC/HAMC Biological replicates: 2 Xenotrasplatations. One replicate per array.

2014-06-30 | E-GEOD-53594 | biostudies-arrayexpress

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