This SuperSeries is composed of the SubSeries listed below.
Variants of <i>DNMT3A</i> cause transcript-specific DNA methylation patterns and affect hematopoiesis.
Specimen part
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Does soft really matter? Differentiation of induced pluripotent stem cells into mesenchymal stromal cells is not influenced by soft hydrogels.
Specimen part, Subject
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Induced pluripotent mesenchymal stromal cell clones retain donor-derived differences in DNA methylation profiles.
Specimen part, Subject
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Matrix elasticity, replicative senescence and DNA methylation patterns of mesenchymal stem cells.
Specimen part, Subject
View SamplesInduced pluripotent stem cells (iPSCs) can be differentiated toward mesenchymal stromal cells (MSCs), but at least on epigenetic level this transition remains incomplete with the current culture conditions. Hydrogels provide a more physiologic three-dimensional environment for in vitro cell culture than conventional tissue culture plastic (TCP). In this study, we followed the hypothesis that growth and differentiation of primary MSCs and of iPSC-derived MSCs (iMSCs) can be enhanced on hydrogels. To this end, we used a hydrogel made of human platelet lysate (hPL). MSCs were effectively cultured on and inside hPL-gel and demonstrated more structured deposition of extracellular matrix (ECM) components than TCP. Furthermore, hPL-gel supported differentiation of iPSCs toward MSCs. Unexpectedly, the differentiation process seemed to be hardly affected by the substrate: iMSCs generated either on TCP or hPL-gel did not reveal differences in morphology, immunophenotype, or differentiation potential. Moreover, global gene expression and DNA-methylation profiles were almost identical in iMSCs generated on TCP or hPL-gel. Our results indicate that matrix elasticity is less crucial for directed lineage-specific differentiation toward MSCs than expected.
Does soft really matter? Differentiation of induced pluripotent stem cells into mesenchymal stromal cells is not influenced by soft hydrogels.
Specimen part, Subject
View Samples3 months old untreated male/female animals were used in the experiment.
No associated publication
Sex, Specimen part
View SamplesMesenchymal stromal cells (MSC) were isolated from human bone marrow. Here, we have compared gene expression profiles of MSC at early and late passages and upon stimulation with transforming growth factor beta 1 (TGF-b1). Stimulation was performed with 1ng/mL TGF-b1 for 1, 4, or 12 hours as indicated. The goal of this study was to determine if senescence-associated gene expression changes and TGF-b1 induced gene expression changes are related.
TGF-beta1 does not induce senescence of multipotent mesenchymal stromal cells and has similar effects in early and late passages.
Specimen part, Treatment, Subject
View SamplesThe de novo DNA methyltransferase 3A (DNMT3A) plays a pivotal role in hematopoietic differentiation. In this study, we followed the hypothesis that alternative splicing of DNMT3A has characteristic epigenetic and functional sequels. Various transcripts of DNMT3A were either knocked down or overexpressed in human hematopoietic stem and progenitor cells resulting in complementary and transcript-specific DNA methylation (DNAm) and gene expression changes. Our results demonstrate that different splice variants of DNMT3A have distinct epigenetic and functional sequels.
Variants of <i>DNMT3A</i> cause transcript-specific DNA methylation patterns and affect hematopoiesis.
Specimen part
View SamplesThis SuperSeries is composed of the SubSeries listed below.
The lncRNA HOTAIR impacts on mesenchymal stem cells via triple helix formation.
Specimen part, Treatment
View SamplesThis SuperSeries is composed of the SubSeries listed below.
Human Platelet Lysate versus Fetal Calf Serum: These Supplements Do Not Select for Different Mesenchymal Stromal Cells.
Sex, Age, Specimen part, Subject
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