Project description:Human mesenchymal stem cells are differentiated into osteoblasts in the presence or absence of ApoA-I treatment, the global gene profiles of MSCs with different time-points are compared. Day 0 is primary human MSCs without induction was used the baseline for comparision. We used microarrays to investigate the global gene expression profiles in hBM-MSCs with ApoA-I treatment for 1, 3, 5 days during osteogenesis
Project description:Primary human bone marrow-derived mesenchymal stem cells (MSCs) were treated with recombinant human TGFb1 (10ng/ml) for different time points (1, 3, 7, 14, 24 hours)
Project description:Primary human bone marrow-derived mesenchymal stem cells (MSCs) were treated with recombinant human TNFa (50ng/ml) for different time points (1, 3, 7, 14, 24 hours)
Project description:Mesenchymal stem cells derived from human bone marrow have multi-directional differentiation potential.There are differences in expression of related genes in the process of osteogenesis induction. We used microarrays to detail the global programme of gene expression underlying osteogenesis and identified distinct classes of up-regulated genes or down-regulated genes during this process.
Project description:Mesenchymal stem cells derived from human bone marrow have multi-directional differentiation potential.There are differences in expression of related genes in the process of osteogenesis induction. We used microarrays to detail the global programme of gene expression underlying osteogenesis and identified distinct classes of up-regulated genes or down-regulated genes during this process.
Project description:The bone marrow microenvironment in Large Granular Lymphocyte Leukemia (LGLL) patients has been unexplored for it’s role in the development of cytopenias, which lead to complications resulting in the most prominent causes of morbidity and mortality. We used microarrays on primary mesenchymal stem cell (MSC) cultures isolated from bone marrow aspirates from LGLL patients to identify genetic programs that may lead to the observed profibrotic and extrinsically senescent phenotype. Isolated primary MSC cultures were maintained under reduced oxygen conditions (2%). All cultures displayed trilineage pluripotency (adipogenesis, osteogenesis, and chondrogenesis). For comparison, normal MSC cultures in early passage (p2-3; same number of population doublings as the LGLL MSCs) and later passage (p7-9; same time spent in culture as the LGLL MSCs) are included.
Project description:Adult neural stem cells (aNSCs) show multilineage differentiation potential influenced by intrinsic and extrinsic signaling cues. We and others have shown that stimulation of aNSCs with bone marrow mesenchymal stem cell (MSC) secreted factors substantially enhances in vitro oligodendrogenesis at an expense of astrogenesis by yet unknown mechanisms (Rivera et al. 2006, Jadasz et al. 2013; 2018, Rivera et al., 2019). In the present study, we demonstrate that aNSCs pre-treated with MSC secretomes for different periods in vitro preferentially differentiate to oligodendrocytic cells in vivo after transplantation into the adult rat spinal cord. Analysis of different time points after transplantation revealed a stable survival rate of transplanted aNSCs and an emphasized pro-oligodendroglial differentiation in response to MSC secreted factors. MSC derived secretomes were then analyzed by mass spectrometry-based proteomics and label-free quantification to identify secreted proteins contributing to oligodendroglial lineage fate determination. To exclude possible contaminants derived from dead cells or serum, our approach includes a comparison of the abundances of proteins present in MSC derived secretomes with corresponding proteins in cell lysates (Grube et al., 2018, Schira-Heinen et al., 2019).
Project description:Pathological processes like osteoporosis or steroid-induced osteonecrosis of the hip are accompanied by increased bone marrow adipogenesis. Such disorder of adipogenic/osteogenic differentiation, which affects also bone marrow derived mesenchymal stem cells (BMSCs) contributes to bone loss during aging. Therefore, we investigated the effects of extracellular vesicles (EVs) isolated from human (h)BMSCs during different stages of osteogenic differentiation on osteogenic and adipogenic differentiation capacity of naïve hBMSCs.
