Project description:Human embryonic stem cells (hESCs) are isolated from the inner cell mass of the blastocysts. The pluripotent properties of hESCs enable the derivation of cell-types or tissues of different lineages for potential applications such as therapeutics discovery and regenerative medicine. Even though hESCs are pluripotent, differences have been observed when compared to the native pluripotent epiblast cells of the blastocyst. We use a chemical approach (3iL: 3 small molecule inhibitor and cytokine) to induce an expression signature that more closely resembles native pluripotent cells. This experiment is STAT3 binding data in 3iL hESCs.
Project description:Human embryonic stem cells (hESCs) are isolated from the inner cell mass of the blastocysts. The pluripotent properties of hESCs enable the derivation of cell-types or tissues of different lineages for potential applications such as therapeutics discovery and regenerative medicine. Even though hESCs are pluripotent, differences have been observed when compared to the native pluripotent epiblast cells of the blastocyst. We use a chemical approach (3iL: 3 small molecule inhibitor and cytokine) to induce an expression signature that more closely resembles native pluripotent cells. This experiment is the epigenetic data of the study.
Project description:Human embryonic stem cells (hESCs) are isolated from the inner cell mass of the blastocysts. The pluripotent properties of hESCs enable the derivation of cell-types or tissues of different lineages for potential applications such as therapeutics discovery and regenerative medicine. Even though hESCs are pluripotent, differences have been observed when compared to the native pluripotent epiblast cells of the blastocyst. We use a chemical approach (3iL: 3 small molecule inhibitor and cytokine) to induce an expression signature that more closely resembles native pluripotent cells. This experiment is the transcription factor binding data of the study.
Project description:Human embryonic stem cells (hESCs) are isolated from the inner cell mass of the blastocysts. The pluripotent properties of hESCs enable the derivation of cell-types or tissues of different lineages for potential applications such as therapeutics discovery and regenerative medicine. Even though hESCs are pluripotent, differences have been observed when compared to the native pluripotent epiblast cells of the blastocyst. We use a chemical approach (3iL: 3 small molecule inhibitor and cytokine) to induce an expression signature that more closely resembles native pluripotent cells. To better understand the difference between this hESC state and the conventional hESC state, we generated the global expression profiles using RNA-seq.
Project description:Pluripotent stem cells were differentiated using a 4 factor differentiation method to neural precursor cells (NPCs) The objective of this study is to find similar gene expression patterns in hNPCs derived from different cell lines through a single technique. 10 Samples were analyzed in this study. This included 5 hNPC lines 4 hPSC lines and one sample of human dermal fibroblasts.
Project description:The introduction and widespread adoption of induced pluripotent stem cell (iPSC) technology has opened new avenues for craniofacial regenerative medicine. Neural crest cells (NCCs) are the precursor population to many craniofacial structures, including dental and periodontal structures, and iPSC-derived NCCs may, in the near future, offer an unlimited supply of patient-specific cells for craniofacial repair interventions. Here, we used an established protocol involving simultaneous Wnt signaling activation and TGF-β signaling inhibition to differentiate three human iPSC lines to cranial NCCs. We then derived a putative craniofacial mesenchymal progenitor (PCMP) population with chondrogenic and osteogenic potential from cranial NCCs and investigated their similarity to widely studied human postnatal dental or periodontal stem/progenitor cells. PCMPs were quite distinct from both their precursor cells (NCCs) and bone-marrow mesenchymal stromal cells, a stromal population of mesodermal origin. Despite their similarity with dental stem/progenitor cells, PCMPS were clearly differentiated by a core set of 66 genes, including ACKR3 (CXCR7), whose expression (both at transcript and protein level) appear to be peculiar to PCMPs. Altogether, our data demonstrate the feasibility of craniofacial mesenchymal progenitor derivation from human iPSCs through a neural crest-intermediate and set the foundation for future studies regarding their full differentiation repertoire and their in vivo existence.
Project description:Under defined differentiation conditions human embryonic stem cells (hESCs) can be directed toward a mesendodermal (ME) or neuroectoderm (NE) fate, the first decision during hESC differentiation. Coupled with G1 lengthening a divergent ciliation pattern emerged within the first 24 hours of induced lineage specification and these changes heralded a neuroectoderm decision before any neural precursor markers were expressed. By day 2, increased ciliation in NE precursors induced autophagy that resulted in the inactivation of Nrf2. Nrf2 binds directly to upstream regions of the OCT4 and NANOG genes to promote their expression and represses NE derivation. Nrf2 suppression was sufficient to rescue poorly neurogenic iPSC lines. Only after these events have been initiated do neural precursor markers get expressed at day 4. Thus we have identified a primary cilium-autophagy-Nrf2 (PAN) axis coupled to cell cycle progression that directs hESCs toward NE. Transcriptome analysis of hESC-derived neuroectoderm and mesendoderm cells
Project description:Pluripotent stem cells were differentiated using a 4 factor differentiation method to neural precursor cells (NPCs) The objective of this study is to find similar gene expression patterns in hNPCs derived from different cell lines through a single technique.
Project description:The Human Induced Pluripotent Stem Cells Initiative (HipSci) is generating a large, high-quality reference panel of human IPSC lines. This is a submission of mass-spectrometry analyses from 6 induced pluripotent stem cell lines generated by the HipSci project.