Project description:To investigate how histone demethylases KDM4B and KDM6B may be involved in osteogenic commitment of mesenchymal stem cells (MSCs), we performed gene expression profiling and comparison on control, KDM4B- and KDM6B-knockdown MSCs at different stages of osteogenic differentiation. Human MSCs infected with scramble shRNAs, shRNAs against KDM4B or KDM6B are treated with BMP4/7 for 0, 4 and 24hrs. Total RNA were extracted from these 9 samples.
Project description:To investigate how histone demethylases KDM4B and KDM6B may be involved in osteogenic commitment of mesenchymal stem cells (MSCs), we performed gene expression profiling and comparison on control, KDM4B- and KDM6B-knockdown MSCs at different stages of osteogenic differentiation.
Project description:Global gene expression data of human embryonic stem cell-, human induced pluripotent stem cell- and bone marrow-derived mesenchymal progenitor cells before and after culture onto osteoinductive scaffolds in perfusion bioreactors. The hypothesis tested in the present study was that perfusion culture in bioreactors influenced the expression levels of several genes involved in proliferation and osteogenic differentiation. Results provide important information of the response of human embryonic stem cell-, human induced pluripotent stem cell- and bone marrow-derived mesenchymal progenitor cell to osteogenic stimulation under perfusion cultures, such as genes involved in cell proliferation and division as well as osteogenic differentiation and bone development. Total RNA obtained from human embryonic stem cell-, human induced pluripotent stem cell- and bone marrow-derived mesenchymal progenitor cells before and after culture under osteogenic conditions in perfusion bioreactors for 5 weeks.
Project description:Transcription profiling of mouse embryonic stem cell line CGR8 during differentiation to mesenchymal stem cells and then adipocyte precursors
Project description:In this study, we identify histone demethylase KDM6B as a critical regulator of osteogenic differentiation in mechanically stimulated periodontal ligament stem cells (PDLSCs). Prior sequencing initiatives and research have underscored KDM6B's mechanosensitivity and illuminated how advanced glycation end-products (AGEs) inhibit KDM6B, thereby impairing stem cell differentiation capabilities. Significant H3K27Me3 enrichment was observed at the transcriptional regions of osteogenic markers (ALP, RUNX2, BMP2, COL1A1) in pluripotent stem cells, with KDM6B essential for the demethylation of H3K27Me3. Moreover, KDM6B was found to activate several critical genes within both the canonical and non-canonical Wnt pathways, enhancing TCF and NFATC family gene expression and facilitating antioxidative responses, matrix adhesion, and intercellular interactions in PDLSCs. Collectively, our data establish a molecular framework that illustrates the cooperative role of lineage-specific histone modifiers in osteogenic differentiation, highlights KDM6B's function in eradicating repressive histone marks, and delineates a reciprocal enhancement loop involving KDM6B and the Wnt signaling pathways.
Project description:Ability to perform osteogenic differentiation is one of the minimal criteria of mesenchymal stem cells (MSCs). Still, it is generally unknown whether osteogenic differentiation is universal cell fate or various phenotypically similar cell states. Besides this, MSCs and their secretomes are actively using for cell/cell-free therapy development, but systemic inter-source variation in MSCs secretomes, proteomes and differentiation mechanisms are still poorly understood. Therefore, here we compared proteomic and secretomic profiles of human mesenchymal cells from six sources: osteoblasts (bone), WJ-MSCs (Warton’s jelly), AD-MSCs (adipose), PDLSCs (tooth: Periodontal Ligament Stem Cells), DPSCs (tooth: Dental Pulp Stem Cells) and GFs (tooth: Gingival Fibroblasts). For experiments we used cells in early passages (3-5) isolated from 3-6 individuals. All cells were compared in standard cultivation and in the 10th day after induction of osteogenic differentiation.