Distinct role of perlecan plays in mesenchymal tissue regeneration through genetic and epigenetic modification
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ABSTRACT:
PROVIDER: PRJNA1152950 | ENA |
REPOSITORIES: ENA
Dataset's files
| Action | DRS | |||
|---|---|---|---|---|
| SRR30415271_1.fastq.gz | Fastqsanger.gz | |||
| SRR30415271_2.fastq.gz | Fastqsanger.gz | |||
| SRR30415272_1.fastq.gz | Fastqsanger.gz | |||
| SRR30415272_2.fastq.gz | Fastqsanger.gz | |||
| SRR30415273_1.fastq.gz | Fastqsanger.gz |
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Project description:Perlecan is a critical component of basement membrane proteins in tissue development. However, there are few studies investigating direct impact of perlecan on mesenchymal tissue differentiation using genetic modification (gain- and loss-of-function mutations) and epigenetic modification (matrix microenvironment). In this report, Cas9-mediated knockout (KO) of heparin sulfate proteoglycan 2 (HSPG2) and overexpression (OE) in human fetal nucleus pulposus stem/progenitor cells (NPSCs) and adult infrapatellar fat pad-derived stem cells (IPFSCs) were evaluated for the influence on mesenchymal differentiation. Furthermore, decellularized ECM (dECM) deposited by fetal NPSCs with either HSPG2 KO or OE was evaluated for its rejuvenation effect on adult NPSCs in proliferation and mesenchymal differentiation. We found that adult IPFSCs confirmed the unique role of perlecan in mesenchymal differentiation of fetal NPSCs; dECM with perlecan overexpression significantly promoted adult NPSCs in chondrogenic capacity rather than osteogenic and adipogenic capacities, indicating a potential application of perlecan in engineering smart biomaterial for cartilage regeneration.
2025-03-26 | GSE275764 | GEO
Project description:m6A Modification Promotes Planarian Regeneration
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Project description:Perlecan (HSPG2), a multifunctional heparan sulphate proteoglycan (HSPG), is a key player in extracellular matrix maturation and stabilisation. Structurally perlecan is similar to agrin, another HSPG known to contribute to cardiomyocyte phenotype switching by reverting hypertrophy. Although perlecan is crucial for cardiac development, its role in cardiomyocyte phenotypic switching is unknown. Here we show perlecan expression increases over time during the differentiation of pluripotent stem cells to cardiomyocytes (hPSC-CMs). Haploinusuffient hPSCs (HSPG2+/-) differentiate efficiently towards cardiomyocytes with minimal transcriptomic differences seen early in differentiation, but wide-ranging changes seen in late-stage cardiomyocytes. These differences are associated with structural, contractile, metabolic, and ECM genes. In keeping, late-stageHSPG2+/-hPSC-CMs display reduced maximal metabolic capacity and increased extracellular acidification rate, characteristics of reduced maturity. Moreover, engineered heart tissues produced withHSPG2+/-hPSC-CMs exhibit increased ECM remodelling, reduced tissue thickness and force generation. Wild-type hPSC-CMs grown on a substrate coated with a perlecan peptide showed increased cardiomyocyte nucleation typical of hypertrophic growth, suggesting that perlecan plays the opposite role of agrin by promoting cellular maturation rather than hyperplasia and proliferation. These data show that perlecan promotes cardiomyocyte maturity, possibly through hypertrophic growth. Targeting perlecan-dependent signalling may, therefore, reverse the phenotypic switch common to many forms of heart failure, by improving cardiomyocyte functionality.
2024-01-23 | GSE229975 | GEO
Project description:m6A Modification Regulates Planarian Regeneration [scRNA-seq]
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Project description:m6A Modification Regulates Planarian Regeneration [MeRIP-seq]
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Project description:m6A Modification Regulates Planarian Regeneration [RNA-seq]
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Project description:Peripheral innervation plays an important role in regulating tissue repair and regeneration. Here, we provide evidence that injured peripheral nerves provide a reservoir of mesenchymal precursor cells that can directly contribute to murine digit tip regeneration and skin repair. In particular, using single-cell RNA sequencing and lineage tracing we identify transcriptionally-distinct mesenchymal cell populations within the control and injured adult nerve, including neural crest-derived cells in the endoneurium with characteristics of mesenchymal precursor cells. Culture and transplantation studies show that these nerve-derived mesenchymal cells have the potential to differentiate into non-nerve lineages. Moreover, following digit tip amputation, the neural crest-derived nerve mesenchymal cells contribute to the regenerative blastema and ultimately to the regenerated bone. Similarly, neural crest derived nerve mesenchymal cells contribute to the dermis during skin wound healing. These findings support a model where peripheral nerves directly contribute mesenchymal precursor cells to promote repair and regeneration of injured mammalian tissues.
2018-11-29 | GSE120678 | GEO
Project description:Regeneration is the regrowth of damaged tissues or organs, a vital mechanism in response to damages from primitive organisms to higher mammals. Planarian possesses active whole-body regenerative capability owning to its vast reservoir of adult stem cells, neoblasts, providing an ideal model to delineate the underlying mechanisms for regeneration. RNA N6-methyladenosine (m6A) modification participates in many biological processes, including stem cell self-renewal and differentiation, in particular the regeneration of hematopoietic stem cells and axons. However, how m6A controls regeneration at the whole-organism level remains largely unknown. Here, we demonstrate that the depletion of m6A methyltransferase regulatory subunit wtap abolishes planarian regeneration, potentially through regulating genes related to cell-cell communication and cell cycle. Single-cell RNA-seq (scRNA-seq) analysis unveils that the wtap knockdown induces a unique type of neural progenitor-like cells (NP-like cells), characterized by specific expression of the cell-cell communication ligand grn. Intriguingly, the depletion of m6A-modified transcripts grn/cdk9 (or cdk7) axis rescues the defective regeneration of planarian caused by wtap knockdown. Overall, our study reveals an indispensable role of m6A modification in regulating whole-organism regeneration.
2023-04-28 | GSE202928 | GEO
Project description:Stem cells reside in specialised microenvironments or niches that balance stem cell proliferation and differentiation. The extracellular matrix (ECM) is an essential component of most niches, as it controls niche homeostasis, provides physical support and conveys extracellular signals. Basement membranes (BMs) are thin ECM sheets constituted mainly by Laminins, Perlecan, Collagen IV and Entactin/Nidogen and that surround epithelia and other tissues. Perlecans are secreted proteoglycans that interact with ECM proteins, ligands, receptors and growth factors such as FGF, PDGF, VEGF, Hedgehog and Wingless. Thus, Perlecans have structural and signalling functions through the binding, storage or sequestering of specific ligands. We have used the Drosophila ovary to assess the importance of Perlecan in the functioning of a stem cell niche. Ovarioles in the adult ovary are enveloped by an ECM sheath and possess a tapered structure at their anterior apex termed the germarium. The anterior tip of the germarium hosts the germline niche, where two to four germline stem cells (GSCs) reside together with few somatic cells: terminal filament (TF) cells, cap cells (CpCs) and escort cells (ECs). We report that niche architecture in the developing gonad requires trol, that niche cells secrete an isoform-specific, Perlecan-rich interstitial matrix and that DE-cadherin-dependent stem cell-niche adhesion necessitates trol. Hence, we provide evidence to support a structural role for Perlecan in germline niche establishment during larval stages and in the maintenance of a normal pool of stem cells in the adult niche.
2021-03-31 | GSE164866 | GEO
Project description:The fundamental of regeneration process of invertebrates involves the renewal, differentiation and reprogramming of stem cell in an orchestrated manner. It has been known that N6-methyladenosine (m6A) regulates stem cell renewal and differentiation. It is still unclear if m6A is crucial for the regeneration at whole-organism level. Here, we demonstrate that wtap knockdown mediated m6A depletion impairs planarian regeneration upon amputation. The cell cycle related genes displayed decreased m6A while increased expression levels in response to wtap knockdown. The m6A depletion induced phenotypes can be rescued by double-knocking down these genes together with wtap, suggesting that m6A-mediated cell cycle controls planarian regeneration. Further analysis combining the single-cell sequencing unveils a unique neuronal progenitor-like cell type, named NCC and characterized by specific expression of grn, which is indispensable for neuroregeneration. Overall, our study uncovered an essential role of wtap-mediated m6A modification in regulating stem cell population dynamics and homeostasis in terms of general-body regeneration.
2023-04-28 | GSE171249 | GEO