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Transcriptome profiling of tendon fibroblasts at the onset of embryonic muscle contraction reveals novel force-responsive genes. FAC sorted tenocytes from 48 hpf zebrafish embryos WT vs. aBTX injected paralyzed bulk RNAseq dataset

ABSTRACT: Mechanical forces play a critical role in tendon development and function, influencing cell behavior through mechanotransduction signaling pathways and subsequent extracellular matrix (ECM) remodeling. Here we investigate the molecular mechanisms by which tenocytes in developing zebrafish embryos respond to muscle contraction forces during the onset of swimming and cranial muscle activity. Using genome-wide bulk RNA sequencing of FAC-sorted tenocytes we identify novel tenocyte markers and genes involved in tendon mechanotransduction.

ORGANISM(S): Danio rerio

PROVIDER: GSE292683 | GEO | 2025/03/26

REPOSITORIES: GEO

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Transcriptome profiling of tendon fibroblasts at the onset of embryonic muscle contraction reveals novel force-responsive genes. FAC sorted tenocytes from 36 hpf vs. 48 hpf zebrafish embryos bulk RNAseq dataset

Project description:Mechanical forces play a critical role in tendon development and function, influencing cell behavior through mechanotransduction signaling pathways and subsequent extracellular matrix (ECM) remodeling. Here we investigate the molecular mechanisms by which tenocytes in developing zebrafish embryos respond to muscle contraction forces during the onset of swimming and cranial muscle activity. Using genome-wide bulk RNA sequencing of FAC-sorted tenocytes we identify novel tenocyte markers and genes involved in tendon mechanotransduction.

2025-03-26 | GSE292682 | GEO

RNA-seq analysis of equine tenocytes exposed to siRNA targeting scleraxis (Scx) to identify novel targets of Scx-mediated mechanotransduction

Project description:Equine tenocytes were exposed to an siRNA targeting the transcription factor scleraxis (Scx) or a scramble control and maintained under cyclic strain. The resulting transcriptomes were then used for RNA-seq analysis. The goal of this study was to identify novel ways in which Scx facilitates mechanotransduction in tenocytes in order to better understand tenocyte biology.

2018-08-02 | GSE110567 | GEO

A latent Axin2+/Scx+ progenitor pool is the central organizer of tendon healing

Project description:A tendon’s ordered extracellular matrix (ECM) is integral for transmitting force and highly prone to injury. Whether and how tendon cells, or tenocytes, embedded within this dense ECM mobilize and contribute to healing is unknown. Here, we identify a specialized Axin2+ tenocyte population in mouse and human tendons that remains latent in homeostasis yet serves as a major source of tendon progenitors during healing. We show that Axin2+ tenocytes readily expand in vitro and express stem cell markers. In vivo, Axin2+ cells are major functional contributors to repair: Axin2+ tenocytes de-differentiate, expand, and re-adopt a tenocyte fate post-injury. Specific loss of Wnt secretion in Axin2+ cells alters their stem cell identity and disrupts their activation upon injury, severely compromising healing. Our work highlights Axin2+ tenocytes as quiescent stem cells embedded in dense matrix, which are uniquely regulated in an autocrine manner and are central organizers of robust tendon healing.

2024-10-22 | GSE188598 | GEO

Genome-wide analysis of mechano-responsive gene expression by tenocytes in fascicles subjected to cyclic tensile strain

Project description:Analysis of mechano-regulation of tenocyte metabolism at gene expression level. The hypothesis tested in the present study was that cyclic tensile strain influence the balance of anabolism/catabolism of tenocytes. Results provide important information of the response of tenocyte to cyclic tensile strain, such as specific mechano-responsive genes, up- or down-regulated specific anabolic/catabolic cellular functions. Keywords: gene expression array-based, stress response, functional analysis

2008-07-23 | GSE12206 | GEO

Impact of exogenous IL-1ß stimulation on equine embryonic stem cell-derived tenocytes in three-dimensional culture

Project description:Exogenous IL-1ß stimulation impacts tendon-associated and inflammatory gene expression in equine adult tenocytes but has no impact on embryonic stem cell (ESC)-derived tenocytes in two-dimensional culture. Whether these effects translate to the transcriptome-wide level in three-dimensional (3D) culture in unknown. Utilising RNA-Sequencing, we report that ESC-tenocytes have zero differentially expressed genes following two-weeks of IL-1ß stimulation with similar collagen gel contraction values between the control and IL-1ß conditions, respectively.

2024-02-26 | GSE237821 | GEO

Grafting induced pluripotent stem cells-derived tenocytes contribute to recovery of motor function after Achilles tendon rupture in rat [single cell RNAseq]

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Tenogenic induction from induced pluripotent stem cells unveils the trajectory towards tenocyte differentiation.

Project description:The musculoskeletal system is integrated by tendons that are characterized by expression of a functionally important transcription factor Scleraxis (Scx). To date, there has been no solid culture system for tenogenic differentiation. Here we developed the tenocyte induction method using induced pluripotent stem cells established from ScxGFP transgenic mice by monitoring fluorescence that reflects a series of dynamic differentiation process. Among several developmentally relevant factors, TGF-2 was the most potent inducer for differentiation of tenocytes expressing Tenomodulin, a mature differentiation marker. Single-cell RNA sequencing (scRNA-seq) revealed 11 distinct clusters including mature tenocyte population and tenogenic differentiation trajectory, which well recapitulates in vivo developmental process. Dataset of scRNA-seq and transcriptome of Scx deficient tendon enabled identification of Scx-related genes in which tendon-related genes are enriched. Collectively, this study leads to a new opportunity for tendon research and provides further insight into mechanistic understanding of the differentiation pathway to a tenogenic fate.

2022-03-09 | GSE168451 | GEO

PI3K-Akt signaling regulates Scx-lineage tenocytes and Tppp3-lineage tendon sheath synovial cells in physiological tendon regeneration

Project description:We identify a PI3K-Akt signaling pathway which is specifically upregulated in neonatal murine injured Achilles tendons. PI3K-Akt signaling inhibition in neonatal murine Achilles tendon rupture model decreases cell proliferation and cell migration to the regenerating tendons in both Scx-lineage intrinsic tenocytes and Tppp3-lineage extrinsic tendon sheath synovial cells. Moreover, PI3K-Akt signaling inhibition decreases stemness and promotes mature tenogenic differentiation in both Scx-lineage and Tppp3-lineage cells. Collectively, PI3K-Akt signaling plays an important role in physiological tendon regeneration.

2025-03-15 | GSE236106 | GEO

Grafting induced pluripotent stem cells-derived tenocytes contribute to recovery of motor function after Achilles tendon rupture in rat

Project description:Self-renewal of tendons is rare since the vascular formation inside is extremely poor, thus reconstructive surgery using autologous tendons has been often taken place in the case of severe injury. However, the rate of re-injury after surgery is relatively high, and collection of autologous tendons leads muscle weakness which results in prolonged rehabilitation. Here, we introduce the induced pluripotent stem cells (iPSCs)-based technology aiming at developing a new therapeutic option after tendon injury. Firstly, we derived tenocytes from human iPSCs by recapitulating the normal progression of step-wise narrowing fate decisions in the vertebrate embryo. We used single-cell RNA sequencing to analyze the developmental trajectory of iPSCs-derived tenocytes. We then demonstrated that grafting iPSCs-tenocytes contributed to recovery of motor function after Achilles tendon injury in rat via engraftments and paracrine effects. The biomechanical strength of regenerated tendons recovered comparable to that of healthy tendons. We propose that the iPSCs-tenocytes will provide a novel therapeutic option in tendon injury.

2021-07-01 | PXD020887 | JPOST Repository

Genome-wide transcriptome analysis reveals Embryonic-Stem Cell derived tenocytes resemble fetal, not adult, tenocytes

Project description:Purpose:- RNA sequencing was performed on adult, fetal and embryonic stem-cell derived equine tenocytes cultured in 3D to look at which had more similar gene expression profiles. Results:- 6,190 genes were significantly differentially expressed (DE) across the three lines of fetal, adult and ESC-tenocytes (logFC ± 2, padj <0.01). 542 of these were DE between adult and fetal tenocytes, 2,708 between fetal and ESC-tenocytes and 2,940 between adult and ESC-tenocytes. Genes which were DE between adult and fetal tenocytes were significanlty involved in cell migration and motility. Genes which were DE between the ESC-tenocytes and both adult and fetal tenocytes were in organism process and development.

2020-05-28 | GSE145029 | GEO

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