Quantification of local matrix deposition during muscle stem cell activation using engineered hydrogels
Ontology highlight
ABSTRACT:
ORGANISM(S): Mus musculus
PROVIDER: GSE252829 | GEO | 2024/02/15
REPOSITORIES: GEO
Similar Datasets
Project description:The influence of the extracellular matrix (ECM) within the stem cell niche remains poorly understood. We found that Syndecan-4 (Sdc4) and Frizzled-7 (Fzd7) form a coreceptor complex in satellite cells and that binding of the ECM glycoprotein Fibronectin (FN) to Sdc4 stimulates the ability of Wnt7a to induce the symmetric expansion of satellite stem cells. Newly activated satellite cells dynamically remodel their niche via transient high-level expression of FN. Knockdown of FN in prospectively isolated satellite cells severely impaired their ability to repopulate the satellite cell niche. Conversely, in vivo overexpression of FN with Wnt7a dramatically stimulated the expansion of satellite stem cells in regenerating muscle. Therefore, activating satellite cells remodel their niche through autologous expression of FN that provides feedback to stimulate Wnt7a signaling through the Fzd7/Sdc4 coreceptor complex. Thus, FN and Wnt7a together regulate the homeostatic levels of satellite stem cells and satellite myogenic cells during regenerative myogenesis. The data set contains one microarray of pooled quiescent skeletal muscle satellite cells
2014-07-11 | E-GEOD-59272 | biostudies-arrayexpress
Project description:The influence of the extracellular matrix (ECM) within the stem cell niche remains poorly understood. We found that Syndecan-4 (Sdc4) and Frizzled-7 (Fzd7) form a coreceptor complex in satellite cells and that binding of the ECM glycoprotein Fibronectin (FN) to Sdc4 stimulates the ability of Wnt7a to induce the symmetric expansion of satellite stem cells. Newly activated satellite cells dynamically remodel their niche via transient high-level expression of FN. Knockdown of FN in prospectively isolated satellite cells severely impaired their ability to repopulate the satellite cell niche. Conversely, in vivo overexpression of FN with Wnt7a dramatically stimulated the expansion of satellite stem cells in regenerating muscle. Therefore, activating satellite cells remodel their niche through autologous expression of FN that provides feedback to stimulate Wnt7a signaling through the Fzd7/Sdc4 coreceptor complex. Thus, FN and Wnt7a together regulate the homeostatic levels of satellite stem cells and satellite myogenic cells during regenerative myogenesis.
2014-07-11 | GSE59272 | GEO
Project description:Muscle stem cells (MuSC) exhibit distinct behaviors during successive phases of developmental myogenesis. However, how their transition to adulthood is regulated is poorly understood. Here we show that fetal MuSC resist progenitor specification and exhibit altered division dynamics, intrinsic features that are progressively lost postnatally. Following transplantation, fetal MuSC more efficiently expand and contribute to muscle repair. Conversely, the efficiency of niche colonization increases in adulthood, indicating a balance between muscle growth and stem cell pool repopulation. Gene expression profiling identified several extracellular matrix (ECM) molecules preferentially expressed in fetal MuSC, including tenascin-C, fibronectin and collagen VI. Loss-of-function experiments confirmed their essential and stage-specific role in regulating MuSC function. Finally, fetal-derived paracrine factors were able to enhance adult MuSC regenerative potential. Together, these findings demonstrate that MuSC change the way in which they remodel their microenvironment to direct stem cell behavior in support of the unique demands of muscle development or repair. MuSCs were isolated through fluorescent-activate cell sorting usinf alpha7-integirn and CD34 as markers to identify the cell population. Total mRNA was then isolated, and samples at different developmental times were compared.
2016-01-20 | E-GEOD-76989 | biostudies-arrayexpress
Project description:<p>We sought to characterize cellular heterogeneity in the human cerebral cortex at a molecular level during cortical neurogenesis. We captured single cells and generated sequencing libraries using the C1TM Single-Cell Auto Prep System (Fluidigm), the SMARTer Ultra Low RNA Kit (Clontech), and the Nextera XT DNA Sample Preparation Kit (Illumina). We performed unbiased clustering of the single cells and further examined transcriptional variation among cell groups interpreted as radial glia. Within this population, the major sources of variation related to cell cycle progression and the stem cell niche from which radial glia were captured. We found that outer subventricular zone radial glia (oRG cells) preferentially express genes related to extracellular matrix formation, migration, and stemness, including <i>TNC</i>, <i>PTPRZ1</i>, <i>FAM107A</i>, <i>HOPX</i>, and <i>LIFR</i> and related this transcriptional state to the position, morphology, and cell behaviors previously used to classify the cell type. Our results suggest that oRG cells maintain the subventricular niche through local production of growth factors, potentiation of growth factor signals by extracellular matrix proteins, and activation of self-renewal pathways, thereby contributing to the developmental and evolutionary expansion of the human neocortex.</p> <p>For <b>study version 2</b>, we have updated this data set to include additional primary cells that we infer to represent microglia, endothelial cells, and immature astrocytes, as well as additional cells from the developing neural retina, and from iPS-cell derived cerebral organoids. The genes distinguishing these cell populations may reveal biological processes supporting the diverse functions of these cell types as well as vulnerabilities of specific cell types in human genetic diseases and in viral infections.</p> <p>For <b>study version 3</b>, we have updated the data set to include additional primary cells, including those published in Nowakowski, et al., Science 2017: "Spatiotemporal Gene Expression Trajectories Reveal Developmental Hierarchies of the Human Cortex" (<i>in press</i>)</p>
| phs000989 | dbGaP
Project description:Muscle stem cells (MuSC) exhibit distinct behaviors during successive phases of developmental myogenesis. However, how their transition to adulthood is regulated is poorly understood. Here we show that fetal MuSC resist progenitor specification and exhibit altered division dynamics, intrinsic features that are progressively lost postnatally. Following transplantation, fetal MuSC more efficiently expand and contribute to muscle repair. Conversely, the efficiency of niche colonization increases in adulthood, indicating a balance between muscle growth and stem cell pool repopulation. Gene expression profiling identified several extracellular matrix (ECM) molecules preferentially expressed in fetal MuSC, including tenascin-C, fibronectin and collagen VI. Loss-of-function experiments confirmed their essential and stage-specific role in regulating MuSC function. Finally, fetal-derived paracrine factors were able to enhance adult MuSC regenerative potential. Together, these findings demonstrate that MuSC change the way in which they remodel their microenvironment to direct stem cell behavior in support of the unique demands of muscle development or repair.
2016-01-20 | GSE76989 | GEO
Project description:Stem cells reside in specialized niches that play a critical role in modulating their fate. Supporting cells in the niche instruct fate changes to the stem cells through epigenetic enzymes that transduce cell signaling to modify gene expression. Recent studies showed that the innate immune response to muscle injury alters the muscle stem cell (MuSC) niche, it remains unknown how MuSC adapt to the modified milieu to mediate muscle repair. Here we show that the epigenetic enzyme JMJD3 coordinates MuSC adaptation to the regenerative niche in a non-cell autonomous manner where it modifies their extracellular matrix to integrate signaling that stimulates exit of quiescence. Genomics and transcriptomics approaches identified the hyaluronic acid (HA) synthesis enzyme Has2 as a key JMJD3 target gene that allows MuSCs to integrate signals from the regenerative niche. Overall, we identified a specific role for JMJD3 in regulating the expression of genes that allow MuSCs to adapt to the modified niche of regenerating muscle. We aim to determine the differential occupancy of histone H3 lysine 4 trimethyl mark muscle satellite stem cells isolated from JMJD3scKO, UTXscKO and Wild-type mice.
2022-08-04 | GSE186830 | GEO
Project description:Stem cells reside in specialized niches that play a critical role in modulating their fate. Supporting cells in the niche instruct fate changes to the stem cells through epigenetic enzymes that transduce cell signaling to modify gene expression. Recent studies showed that the innate immune response to muscle injury alters the muscle stem cell (MuSC) niche, it remains unknown how MuSC adapt to the modified milieu to mediate muscle repair. Here we show that the epigenetic enzyme JMJD3 coordinates MuSC adaptation to the regenerative niche in a non-cell autonomous manner where it modifies their extracellular matrix to integrate signaling that stimulates exit of quiescence. Genomics and transcriptomics approaches identified the hyaluronic acid (HA) synthesis enzyme Has2 as a key JMJD3 target gene that allows MuSCs to integrate signals from the regenerative niche. Overall, we identified a specific role for JMJD3 in regulating the expression of genes that allow MuSCs to adapt to the modified niche of regenerating muscle. We aim to determine the differential occupancy of histone H3 lysine 4 trimethyl mark muscle satellite stem cells isolated from JMJD3scKO, UTXscKO and Wild-type mice.
2022-08-04 | GSE186829 | GEO
Project description:Stem cells reside in specialized niches that play a critical role in modulating their fate. Supporting cells in the niche instruct fate changes to the stem cells through epigenetic enzymes that transduce cell signaling to modify gene expression. Recent studies showed that the innate immune response to muscle injury alters the muscle stem cell (MuSC) niche, it remains unknown how MuSC adapt to the modified milieu to mediate muscle repair. Here we show that the epigenetic enzyme JMJD3 coordinates MuSC adaptation to the regenerative niche in a non-cell autonomous manner where it modifies their extracellular matrix to integrate signaling that stimulates exit of quiescence. Genomics and transcriptomics approaches identified the hyaluronic acid (HA) synthesis enzyme Has2 as a key JMJD3 target gene that allows MuSCs to integrate signals from the regenerative niche. Overall, we identified a specific role for JMJD3 in regulating the expression of genes that allow MuSCs to adapt to the modified niche of regenerating muscle. We aim to determine the differential occupancy of histone H3 lysine 4 trimethyl mark muscle satellite stem cells isolated from JMJD3scKO, UTXscKO and Wild-type mice.
2022-08-04 | GSE186828 | GEO
Project description:During aging, the regenerative capacity of skeletal muscle decreases due to intrinsic changes in muscle stem cells (MuSCs) and alterations in their niche. Here, we used quantitative mass spectrometry to characterize intrinsic changes in the MuSC proteome and remodeling of the MuSC niche during aging. We generated a network connecting age-affected ligands located in the niche and cell surface receptors on MuSCs. Thereby, we revealed signaling via Integrins, Lrp1, Egfr and Cd44 as the major cell communication axes perturbed through aging. We investigated the effect of Smoc2, a secreted protein that accumulates with aging, originating from fibro-adipogenic progenitors. Increased levels of Smoc2 contribute to the aberrant Itgb1/MAPK signaling observed during aging, thereby causing impaired MuSC functionality and muscle regeneration. By connecting changes in the proteome of MuSCs to alterations of their niche, our work will enable a better understanding of how MuSCs are affected during aging.
2021-11-10 | PXD023643 | Pride
Project description:During aging, the regenerative capacity of skeletal muscle decreases due to intrinsic changes in muscle stem cells (MuSCs) and alterations in their niche. Here, we used quantitative mass spectrometry to characterize intrinsic changes in the MuSC proteome and remodeling of the MuSC niche during aging. We generated a network connecting age-affected ligands located in the niche and cell surface receptors on MuSCs. Thereby, we revealed signaling via Integrins, Lrp1, Egfr and Cd44 as the major cell communication axes perturbed through aging. We investigated the effect of Smoc2, a secreted protein that accumulates with aging, originating from fibro-adipogenic progenitors. Increased levels of Smoc2 contribute to the aberrant Itgb1/MAPK signaling observed during aging, thereby causing impaired MuSC functionality and muscle regeneration. By connecting changes in the proteome of MuSCs to alterations of their niche, our work will enable a better understanding of how MuSCs are affected during aging.
2021-11-10 | PXD023628 | Pride