Project description:Organoid models provide powerful tools to study tissue biology and development in a dish. Here, we established first-time organoid models from early-postnatal (postnatal day 7) mouse molar and incisor, capable of differentiation toward ameloblast-like cells in vitro. To more in detail characterise organoids from mouse molar and incisor, bulk RNA-sequencing was performed on the following (1) early passage (passage 0) organoids from both tooth types grown in basal tooth organoid medium (TOM) with or without addition of exogenous epidermal growth factor (EGF); and (2) late passage (passage 5) organoids grown in TOM+EGF or differentiation medium (DM).
Project description:Induced pluripotent stem cell (iPSC) derived organoid systems provide models to study human organ development. Single-cell transcriptome sequencing enables highly-resolved descriptions of cell state heterogeneity within these systems and computational methods can reconstruct developmental trajectories. However, new approaches are needed to directly measure lineage relationships in these systems. Here we establish an inducible dual channel lineage recorder, iTracer, that couples reporter barcodes, inducible CRISPR/Cas9 scarring, and single-cell transcriptomics to analyze state and lineage relationships in iPSC-derived systems. This data set include the iTracer data of 12 cerebral organoids.
Project description:Induced pluripotent stem cell (iPSC) derived organoid systems provide models to study human organ development. Single-cell transcriptome sequencing enables highly-resolved descriptions of cell state heterogeneity within these systems and computational methods can reconstruct developmental trajectories. However, new approaches are needed to directly measure lineage relationships in these systems. Here we establish an inducible dual channel lineage recorder, iTracer, that couples reporter barcodes, inducible CRISPR/Cas9 scarring, and single-cell transcriptomics to analyze state and lineage relationships in iPSC-derived systems. This data set include the iTracer data of two microdissected regions of one cerebral organoid.
Project description:In vitro human pluripotent stem cell derived intestinal organoids (HIOs) are immature and lack for diverse differentiated secretory cell types. We would like to test the hypothesis whether addition of a mesenchyme secreting ligand which is depleted in canonical organoid culture media could increase the maturity and secretory cell type diversity in HIOs in vitro. To do this, we adapted the directed differentiation protocol of HIOs by growing HIOs in media with EGF, NOGGIN, R-spondin-1 (ENR) for 30 days, isolated epithelial cells with dispase, recovered them with adult intestinal enteroid media with Wnt-3A (WENR). Then we introduced the mesenchyme secreting ligand NRG1 to the established enteroid culture (WENR+NRG1) and compared them to the enteroids grown in control condition (WENR).
Project description:Induced pluripotent stem cell (iPSC) derived organoid systems provide models to study human organ development. Single-cell transcriptome sequencing enables highly-resolved descriptions of cell state heterogeneity within these systems and computational methods can reconstruct developmental trajectories. However, new approaches are needed to directly measure lineage relationships in these systems. Here we establish an inducible dual channel lineage recorder, iTracer, that couples reporter barcodes, inducible CRISPR/Cas9 scarring, and single-cell transcriptomics to analyze state and lineage relationships in iPSC-derived systems. This data set include the spatial iTracer data of three slices of one cerebral organoid measured by 10x Visium.
Project description:The usage of IGF1 and FGF2 instead of EGF and p38 inhibitor during human intestinal organoid culture enables to preserve differentiated cell populations. We analyzed gene expression of human small intestinal organoids cultured with either IGF1/FGF2 or EGF/p38i.
Project description:scRNAseq of primary fetal liver (6 post conceptional weeks), fetal biliary organoids, hepatoblast organoids, hepatoblast organoids after withdrawl of Wnt and transfer to hepatozyme medium, hepatoblast organoids after TGFb treatment.
Project description:The aim of this study was to determine the effects of TGFβ at the premalignant stage of CRC development. Organoid cultures were isolated from normal colon and from tubular adenomas. One normal colon culture was genetically engineered using the CRISPR-Cas9 system to carry the BRAFV600E mutation. Organoid cultures of three different tubular adenomas and two normal colon samples, and one BRAFV600E-mutant organoid culture received TGFβ or control treatment after which gene expression was analyzed by microarray (Affymetrix U133+ PM Genechip Array).
Project description:Single cell ATAC-seq (scATAC-seq) was performed at various stages of differentiation of human pluripotent stem cells to 4 month old cerebral organoids. scATAC-seq was performed on the following days of differentiation: day 0 (pluripotent stem cell), day 4 (embryoid body), day 10 (neuroectoderm), day 15 (neuroepithelium), day 30 (1 month old cerebral organoid), day 60 (2 months old cerebral organoid), and day 120 (4 months old cerebral organoid).