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Single Cell Transcriptomics-Informed Induced Pluripotent Stem Cells Differentiation to Tenogenic Lineag

ABSTRACT: Single Cell Transcriptomics-Informed Induced Pluripotent Stem Cells Differentiation to Tenogenic Lineag

PROVIDER: PRJNA1202147 | ENA |

REPOSITORIES: ENA

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Single Cell Transcriptomics-Informed Induced Pluripotent Stem Cells Differentiation to Tenogenic Lineag

Project description:During vertebrate embryogenesis, axial tendons develop from the paraxial mesoderm and differentiate through specific developmental stages to reach the syndetome stage. While the main roles of signaling pathways in the earlier stages of the differentiation have been well established, pathway nuances in syndetome specification from the sclerotome stage have yet to be explored. Here, we show stepwise differentiation of human iPSCs to the syndetome stage using chemically defined media and small molecules that were modified based on single cell RNA-sequencing and pathway analysis. We identified a significant population of branching off-target cells differentiating towards a neural phenotype overexpressing Wnt. Further transcriptomics post-addition of a WNT inhibitor at the somite stage and onwards revealed not only total removal of the neural off-target cells, but also increased syndetome induction efficiency. Fine-tuning tendon differentiation in vitro is essential to address the current challenges in developing a successful cell-based tendon therapy.

2024-12-24 | GSE285276 | GEO

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.

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

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

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Human induced pluripotent stem cell differentiation to cardiomyocytes

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Metabolomic Profiling of Human Pluripotent Stem Cell Differentiation into Lung Progenitors

Project description:Metabolism is vital to cellular function and tissue homeostasis during human lung development. In utero, embryonic pluripotent stem cells undergo endodermal differentiation towards a lung progenitor cell fate that can be mimicked in vitro using induced human pluripotent stem cells (hiPSCs) to study genetic mutations. To identify differences between wild type and surfactant protein B (SFTPB)-deficient cell lines during endoderm specification towards lung, we used an untargeted metabolomics approach to evaluate the developmental changes in metabolites. We found that the metabolites most enriched during the differentiation from pluripotent stem cell to lung progenitor cell, regardless of cell line, were sphingomyelins and phosphatidylcholines, two important lipid classes in fetal lung development. The SFTPB mutation had no metabolic impact on early endodermal lung development. The identified metabolite signatures during lung progenitor cell differentiation may be utilized as biomarkers for normal embryonic lung development.

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1H NMR metabolite monitoring during the differentiation of human induced pluripotent stem cells provides new insights into the molecular events that regulate embryonic chondrogenesis

Project description:The integration of cell metabolism with signalling pathways, transcription factor networks and epigenetic mediators is critical in coordinating molecular and cellular events during embryogenesis. Induced pluripotent stem cells (IPSCs) are an established model for embryogenesis, germ layer specification and cell lineage differentiation, advancing the study of human embryonic development and the translation of innovations in drug discovery, disease modelling and cell-based therapies. The metabolic regulation of IPSC pluripotency is mediated by balancing glycolysis and oxidative phosphorylation, but there is a paucity of data regarding the influence of individual metabolite changes during cell lineage differentiation. We used <sup>1</sup>H NMR metabolite fingerprinting and footprinting to monitor metabolite levels as IPSCs are directed in a three-stage protocol through primitive streak/mesendoderm, mesoderm and chondrogenic populations. Metabolite changes were associated with central metabolism, with aerobic glycolysis predominant in IPSC, elevated oxidative phosphorylation during differentiation and fatty acid oxidation and ketone body use in chondrogenic cells. Metabolites were also implicated in the epigenetic regulation of pluripotency, cell signalling and biosynthetic pathways. Our results show that <sup>1</sup>H NMR metabolomics is an effective tool for monitoring metabolite changes during the differentiation of pluripotent cells with implications on optimising media and environmental parameters for the study of embryogenesis and translational applications.

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GDF5-induced tenogenic differentiation of human bone marrow-derived stromal cells (hMSC)

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Project description:Collagen I and fibromodulin, which was immobilized on PLCL nanoyarn, induced tenogenic differentiation of hASCs

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