Browse
Submit Data
Databases
API
Help

Unknown,Transcriptomics,Genomics,Proteomics

Dataset Information

29 Views

0 Connections

0 Citations

0 Reanalyses

0 Downloads

Omics score: 0

Gene expression from lamina propria of olfactory mucosa from Human

ABSTRACT: The establishment of induced pluripotent stem (iPS) cells methodologies has widened the possibilities of stem cell related clinical therapies. However, safety concerns over current reprogramming technologies as well as lack of efficient protocols for differentiation raise serious questions over their usage in clinical settings. Direct lineage conversion may represent a safer technology for cell-therapy. Here, we identify Sox2 as a factor able to transdetermine human mesenchymal stem cells (MSCs) to hematopoietic progenitor cells (HPCs), recapitulating the molecular events during in vivo hematopoiesis. This technology offers an efficiency of up to 70% HPC generation in less than 8 days under feeder-free conditions. With the goal of devising ways for transplantation into diseased patients we developed two different methodologies that avoid exogenous DNA integration or viral infections. The first, by transduction of recombinant Sox2 protein, and the second by functional replacement of Sox2 by inhibition of TGFß signaling. The DNA integration-, virus-, and feeder-free transdetermination system here described may complement and enhance current approaches for autologous as well as heterologous HPC transplantation in humans. Mesenchymal Stem Cells were transdifferentiated towards the hematopoietic lineage.

ORGANISM(S): Homo sapiens

SUBMITTER: Ignacio Sancho-Martinez

PROVIDER: E-GEOD-25336 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

ACCESS DATA

Json Xml

Similar Datasets

Gene expression from lamina propria of olfactory mucosa from Human

Project description:The establishment of induced pluripotent stem (iPS) cells methodologies has widened the possibilities of stem cell related clinical therapies. However, safety concerns over current reprogramming technologies as well as lack of efficient protocols for differentiation raise serious questions over their usage in clinical settings. Direct lineage conversion may represent a safer technology for cell-therapy. Here, we identify Sox2 as a factor able to transdetermine human mesenchymal stem cells (MSCs) to hematopoietic progenitor cells (HPCs), recapitulating the molecular events during in vivo hematopoiesis. This technology offers an efficiency of up to 70% HPC generation in less than 8 days under feeder-free conditions. With the goal of devising ways for transplantation into diseased patients we developed two different methodologies that avoid exogenous DNA integration or viral infections. The first, by transduction of recombinant Sox2 protein, and the second by functional replacement of Sox2 by inhibition of TGFß signaling. The DNA integration-, virus-, and feeder-free transdetermination system here described may complement and enhance current approaches for autologous as well as heterologous HPC transplantation in humans.

2012-11-15 | GSE25336 | GEO

CXCL12/CXCR4 signaling enhances human PSC-derived hematopoietic progenitor function and overcomes early in vivo transplantation failure

Project description:Human pluripotent stem cells (hPSC) generate hematopoietic progenitor cells (HPC), but fail to engraft xenograft models, which is a hallmark feature of adult/somatic hematopoietic stem cells (HSC) from human donors. Progress to derive hPSC-derived HSCs has relied on cell autonomous approaches that force expression of transcription factors (TF), however the role of bone marrow (BM) niche remains poorly understood. Here, we quantified a failure of hPSC-HPCs to survive even in the first 24 h upon transplantation into the BM. Across several hPSC-HPC differentiation methodologies, we identified the lack of CXCR4 expression and network function. Ectopic CXCR4 conferred CXCL12-dependent signaling of hPSC-HPCs in biochemical assays and increased migration/chemotaxis and progenitor capacity, as well as survival and proliferation following transplantation in vivo. In addition, hPSC-HPCs forced to express CXCR4 demonstrated a transcriptional shift toward somatic HPCs, but this approach failed to produce long-term HSC engraftment. Our results reveal that independent of differentiation methods, networks involving CXCR4 should be targeted to generate HSCs with in vivo function from hPSCs.

2018-06-21 | GSE106721 | GEO

Hematopoietic Progenitor Cells of Different Donor Age

Project description:In this series we have analyzed the effect of donor age on the gene expression profile of human hematopoietic stem and progenitor cells (HPC). Cells were taken from umbilical cord blood (CB) or from G-CSF mobilized blood of healthy donors for allogeneic blood stem cell transplantation.

2009-06-12 | GSE12277 | GEO

Targeted CpG island methylation in human pluripotent stem cells

Project description:In our manuscript, we describe novel methodologies for bidirectional DNA methylation editing at targeted genomic loci through homologous recombination (HR) in human pluripotent stem cells. In order to gain insights on the applicability of these methodologies towards modeling epigenetic alterations, as well as for the development of platforms for cell transplantation upon epigenetic correction.

2017-12-01 | GSE63938 | GEO

Gene expression and chromatin accessibility profiles of cultured male germline stem cells [RNA-seq and ATAC-seq]

Project description:We report the application of RNA-seq to profile the transcriptome associated with Oct4-GFP intensity, feeder v.s. feeder-free culture, epithelial and mesenchymal heterogeneity and G9a inhibition in cultured male germline stem cells (GSCs). First, we confirmed that the self-renewal gene expression levels of feeder culture and feeder-free culture were comparable to each other. Next, we investigatied the transcriptional differences among GSCs with different Oct4-GFP intensity. Then, we explored the transcriptonal differences between epithelial-like and mesenchymal-like GSCs, demonstrating GSCs could undergo an EMT-like process. Lastly, we showed that G9a inhibition could suppress the EMT-like process in GSCs.

2023-07-01 | GSE159412 | GEO

Human menstrual blood-derived stem cell transplantation suppresses liver injury in DDC-induced chronic cholestasis

Project description:Increasing studies suggested the treatment potential of mesenchymal stem cells in variety diseases. Evidence showed that MSCs could promote injured tissue repair and improve disease mortality. These indicated that MSC transplantation may be an ideal candidate for cholestasis treatment.We found that MenSC transplantation could significantly improve the symptoms and pathological changes of DDC-induced cholestasis liver injury in mice.

2022-02-16 | PXD028425 | Pride

Human iPSCs derived under feeder free conditions displays an unqiue cell cycle and DNA replication genotype

Project description:Induced pluripotent stem cells (iPSCs) have been generated from various somatic cells under feeder-layer conditions. These feeder-derived iPSCs generated in different labs exhibit greater variability than between different traditional embryo derived hESC lines. For that reason, it is important to develop a standard and defined system for deriving autologous patient stem cells. We have generated iPSCs under feeder-free conditions using Matrigel coated vessels in chemically defined medium, mTeSR1. These feeder-free derived iPSCs are in many ways similar to feeder-derived iPSCs and also to hESCs, with respect to their pluripotent gene expression (OCT4, NANOG, SOX2), protein expression (OCT4, NANOG, SSEA4, TRA160) and differentiation capabilities. We conducted a whole genomic transcript analysis using Affymetrix Human Gene 1.0 ST arrays to elucidate the important differences between traditional feeder-derived iPSCs and feeder-free derived iPSCs. We reveal that feeder-free iPSCs have over-represented terms belonging to DNA replication and cell cycle genes which are lacking in feeder-derived iPSCs. Feeder-free iPSCs are in many aspects more similar to hESCs including; apoptosis, chromatin modification enzymes and mitochondrial energy metabolism. We have also identified potential biomarkers for fully reprogrammed iPSCs (FRZB) and partially reprogrammed iPSCs (POTEG, MX2) based on their expression trends across all cell types. In conclusion, feeder-free derived iPSCs is transcriptomically more similar to hESCs than feeder derived iPSCs, in many biological functions.

2011-06-03 | GSE21655 | GEO

Paracrine TGFß Signaling Counterbalances BMP-Mediated Repression in Hair Follicle Stem Cell Activation

Project description:Hair follicle (HF) regeneration begins when communication between quiescent epithelial stem cells (SCs) and underlying mesenchymal dermal papillae (DP) generates sufficient activating cues to overcome repressive BMP signals from surrounding niche cells. We uncovered a hitherto unrecognized DP transmitter, TGFβ2, which activates Smad2/3 transiently in HFSCs concomitant with entry into tissue regeneration. We used microarrays to detect the genes specifically affected by TGFß receptor II-deficient mice upon HFSC activation. Hair follicle stem cells (HFSCs) of hair gem (HG) and bulge, and total skin keratinocytes were FACS-purified from the mouse back skin at 2nd telogen-to-anagen transition stages.

2012-01-04 | E-GEOD-33471 | biostudies-arrayexpress

Transcription profiling of human gene expression profiles of CD34+/CD38- cells vs AFT024

Project description:It is widely accepted that hematopoietic progenitor cells (HPC) are tightly associated with discrete niches within the bone marrow. This molecular environment supports and regulates their self renewal and differentiation. AFT024 is a cell line derived from murine fetal liver that has been demonstrated to maintain human hematopoietic progenitors in an undifferentiated state in vitro. While various functional and genomic studies of this and other stromal layers have already been reported, the influence of the cellular microenvironment on the gene expression of HPC has not yet been systematically analyzed.<br> <br> The CD34+/CD38- fraction of human umbilical cord blood was parted and either cultivated on AFT024 [kindly provided by I. Lemischka] or without stromal feeder layer for 16h, 20h, 48h or 72h. Both fractions were then harvested and separated by vigorous pipetting and FACS sorted again to separate the HPC from AFT024. Global gene expression profiles were determined using a novel Human Genome cDNA Microarray of over 51,145 ESTs of the UnigenSet-RZPD3. In analogy, we have compared the gene expression profiles of CD34+/CD38- cells versus AFT024 to exclude that differential gene expression resulted from contaminating feeder layer cells.

2005-06-13 | E-EMBL-3 | biostudies-arrayexpress

Human iPSCs derived under feeder free conditions displays an unqiue cell cycle and DNA replication genotype

2011-06-03 | E-GEOD-21655 | biostudies-arrayexpress