The application of human embryonic stem (ES) cells has an inherent reliance on understanding the starting cell population. Human ES cells differ from mouse ES cells and the specific embryonic origin of both cell types is unclear. Previous work suggested that mouse ES cells could only be obtained from the embryo prior to implantation in the uterus. Here we show that cell lines can be derived from the epiblast, a tissue of the post-implantation embryo that generates the embryo proper. These cells, which we refer to as EpiSCs (post-implantation epiblast-derived stem cells), express transcription factors known to regulate pluripotency, maintain their genomic integrity, and robustly differentiate into the major somatic cell types as well as primordial germ cells (PGCs). The post-ES cell lines are distinct from mouse ES cells in their epigenetic state and the signals controlling their differentiation. Furthermore, post-ES and human ES cells share patterns of gene expression and signalling responses that normally function in the epiblast. These results show that epiblast cells can be maintained as stable cell lines and interrogated to understand how pluripotent cells generate distinct fates during early development.
New cell lines from mouse epiblast share defining features with human embryonic stem cells.
No sample metadata fields
View SamplesStem cell biology has garnered much attention due to its potential to impact human health through disease modeling and cell replacement therapy. This is especially pertinent to myelin-related disorders such as multiple sclerosis and leukodystrophies where restoration of normal oligodendrocyte function could provide an effective treatment. Progress in myelin repair has been constrained by the difficulty in generating pure populations of oligodendrocyte progenitor cells (OPCs) in sufficient quantities. Pluripotent stem cells theoretically provide an unlimited source of OPCs but significant advances are currently hindered by heterogeneous differentiation strategies that lack reproducibility. Here we provide a platform for the directed differentiation of pluripotent mouse epiblast stem cells (EpiSCs) through a defined series of developmental transitions into a pure population of highly expandable OPCs in ten days. These OPCs robustly differentiate into myelinating oligodendrocytes both in vitro and in vivo. Our results demonstrate that pluripotent stem cells can provide a pure population of clinically-relevant, myelinogenic oligodendrocytes and offer a tractable platform for defining the molecular regulation of oligodendrocyte development, drug screening, and potential cell-based remyelinating therapies.
Rapid and robust generation of functional oligodendrocyte progenitor cells from epiblast stem cells.
No sample metadata fields
View SamplesThe application of human embryonic stem (ES) cells in medicine
New cell lines from mouse epiblast share defining features with human embryonic stem cells.
No sample metadata fields
View SamplesNPTX1 is a key inducer of neural lineages from the human ESC.
NPTX1 regulates neural lineage specification from human pluripotent stem cells.
Cell line, Time
View SamplesCell-based therapies for myelin disorders, such as multiple sclerosis and leukodystrophies, require technologies to generate functional oligodendrocyte progenitor cells. Here we describe direct conversion of mouse embryonic and lung fibroblasts to induced oligodendrocyte progenitor cells (iOPCs) using sets of either eight or three defined transcription factors. iOPCs exhibit a bipolar morphologyical and global gene expression profile molecular features consistent with bona fide OPCs. They can be expanded in vitro for at least five passages while retaining the ability to differentiate into induced multiprocessed oligodendrocytes. When transplanted to hypomyelinated mice, iOPCs are capable of ensheathing host axons and generating compact myelinmyelinating axons both in vitro and in vivo. Lineage conversion of somatic cells to expandable iOPCs provides a strategy to study the molecular control of oligodendrocyte lineage identity and may facilitate neurological disease modeling and autologous remyelinating therapies.
Transcription factor-mediated reprogramming of fibroblasts to expandable, myelinogenic oligodendrocyte progenitor cells.
Specimen part, Treatment
View SamplesThis SuperSeries is composed of the SubSeries listed below.
StemCellDB: the human pluripotent stem cell database at the National Institutes of Health.
Sex, Specimen part, Cell line
View SamplesOligodendrocyte dysfunction underlies many neurological disorders but rapid assessment of mutation-specific effects in these cells has been impractical. To enable functional genetics in oligodendrocytes, here we report a highly efficient method for generating oligodendrocytes and their progenitors from mouse embryonic and induced pluripotent stem cells, independent of mouse strain or mutational status. We demonstrate that this approach, when combined with genome engineering, provides a powerful platform for the expeditious study of genotype-phenotype relationships in oligodendrocytes. Overall design: Cells were lysed directly in 1 ml of TRIzol (Thermo Fisher) and stored at -80°C. Once all samples were collected, samples were thawed on ice and RNA was separated with chloroform using Phase Lock Gel tubes (5prime). RNA was isolated using the miRNeasy Mini Kit (Qiagen) according to the manufacture's protocol. One microgram of each sample was then subject to ribosome depletion, fragmented, and library prepared using the TruSeq Stranded Total RNA Kit with Ribo Zero Gold (Illumina) according to the manufacturer's protocol and indexed using TruSeq adapters. One hundred base pair paired-end reads were generated for each sample on the Illumina HiSeq 2500 (Case Western Reserve University Sequencing Core; Cleveland, OH). Samples include mESC derived oligodendrocyte progenitor cells (OPCs) from four different wildtype mouse strains at 0 hr, 24, hr, 48 hr, and 72 hr after treatment with thyroid hormone T3 (n = 4 biological replicates per time point). Two additional samples include mutant OPCs (shiverer and MYRF knockout ''delMYRF'') at 72 hr time point.
Rapid functional genetics of the oligodendrocyte lineage using pluripotent stem cells.
Specimen part, Cell line, Subject
View SamplesTo broaden the appeal of the NIH Stem Cell Database, we analyzed a subset of undifferentiated human embryonic stem cell lines (5 lines in duplicate) on the Affymetrix platform. One standard culture protocol was used in conjunction with rigorous quality control. Expanded description of methods used and are available at: http://stemcelldb.nih.gov.
StemCellDB: the human pluripotent stem cell database at the National Institutes of Health.
Sex, Cell line
View SamplesOrganoid technologies provide an accessible system in which to examine the generation, self-organization,and 3-dimensional cellular interactions during development of the human cerebral cortex. However, oligodendrocytes, the myelinating glia of the central nervous system and third major neural cell type, are conspicuously absent from current protocols. Here we reproducibly generate human oligodendrocytes and myelin in pluripotent stem cell-derived cortical spheroids. Transcriptional and immunohistochemical analysis of the spheroids demonstrates molecular features consistent with maturing human oligodendrocytes within 14 weeks of culture, including expression of MyRF, PLP1, and MBP proteins. Histological analysis by electron microscopy shows initial wrapping of human neuronal axons with myelin by 20 weeks and maturation to compact myelin by 30 weeks in culture. Treatment of spheroids with previously identified promyelinating drugs enhances the rate and extent of human oligodendrocyte generation and myelination. Furthermore, generation of spheroids from patients with a severe genetic myelin disorder, Pelizaeus-Merzbacher disease, demonstrates the ability to recapitulate human disease phenotypes, which were in turn improved with both pharmacologic and CRISPR-based approaches. Collectively, these 3-dimensional, multi-lineage cortical spheroids provide a versatile platform to observe and perturb the complex cellular interactions that occur during developmental myelination of the brain and offer new opportunities for disease modeling and therapeutic development in human tissue. Overall design: RNAseq profiles comparing neuro-cortical spheroids and oligo-cortical spheroids
Induction of myelinating oligodendrocytes in human cortical spheroids.
No sample metadata fields
View SamplesThis SuperSeries is composed of the SubSeries listed below.
Epigenomic enhancer profiling defines a signature of colon cancer.
Specimen part
View Samples